Simplification of Switching Function

EEN1036 Digital Logic Design Chapter 4 part I Simplification of Switching Function 1 Objective s s s s Simplifying logic circuit Minimization using Karnaugh map Using Karnaugh map to obtain simplified SOP and POS expression Five-variable Karnaugh map 2 Simplifying Logic Circuits †¢ †¢ †¢ A A Boolean expression for a logic circuit may be reduced to a simpler form The simplified expression can then be used to implement a circuit equivalent to the original circuit Consider the following example: B C A B C + A BC Y AB C + AB C Y = A B C + A BC + AB C + AB C 3 Continue †¦Checking for common factor: Y = A B C + A BC + AB C + AB C = A C ( B + B ) + AB (C + C ) Reduce the complement pairs to ‘1’ Y = A C ( B + B ) + AB (C + C ) = A C + AB Draw the circuit based on the simplified expression A B C Y 4 Continue †¦ †¢ A Consider another logic circuit: B C Y Y = C( A + B + C ) + A + C Convert to SOP expression: Y = C( A + B + C ) + A + C = AC + B C + AC C hecking for common factor: Y = A(C + C ) + B C = A + BC 5 Continue †¦ †¢ †¢ Simplification of logic circuit algebraically is not always an easy task The following two steps might be useful: i.The original expression is convert into the SOP form by repeated application of DeMorgan’s theorems and multiplication of terms ii. The product terms are then checked for common factors, and factoring is performed wherever possible 6 Continue †¦ †¢ Consider the truth table below: A 0 0 0 0 1 B 0 0 1 1 0 C 0 1 0 1 0 Y 0 0 1 0 0 Minterm Boolean expression: Simplify to yield: Y = A BC + ABC + AB C Y = BC ( A + A) + AB C = BC + AB C 1 0 1 1 1 1 0 1 1 1 1 0 †¢ If minterms are only differed by one bit, they can be simplified, e. g.A BC & ABC 7 Continue †¦ †¢ More example: A 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 C 0 1 0 1 0 1 0 1 Y 0 1 1 0 0 1 1 0 Minterm Boolean expression: Y = A B C + A BC + AB C + ABC Minterms 1 and 5, 2 and 6 are only differ by one bit: Y = B C ( A + A) + BC ( A + A) = BC + B C A B C Y 0 0 0 1 0 0 1 0 0 0 1 1 1 1 1 1 0 0 1 1 0 1 0 1 0 1 1 0 1 0 1 0 Minterm Boolean expression: Y = A B C + A BC + AB C + ABC Checking and factoring minterms differed by only by one bit: Y = A C ( B + B ) + AC ( B + B ) = A C + AC = C ( A + A) =C 8 Continue †¦ †¢ †¢ †¢ Though truth table can help us to detect minterms which are only differed by one bit, it is not arranged in a proper way A Karnaugh map (K-map) is a tool, which help us to detect and simplify minterms graphically It is a rearrangement of the truth table where each adjacent cell is only differed by one bit By looping adjacent minterms, it is similar to grouping the minterms with a single bit difference on the truth table 9 Karnaugh Map †¢ †¢ A K-map is just a rearrangement of truth table, so that minterms with a single-bit difference can be detected easily Figure below shows 4 possible arrangement of 3-variable K-map A BC 0 0 01 1 11 3 10 2 C AB 00 0 01 2 11 6 10 4 0 1 4 5 7 6 0 1 1 3 7 5 AB C 0 0 1 1 BC A 0 0 1 4 00 01 2 3 00 01 1 5 11 6 7 11 3 7 10 4 5 10 2 6 10 Continue †¦ †¢ Figure below show two possible arrangement of 4variable K-map CD AB 00 0 01 1 11 3 10 2 AB 00 CD 01 4 11 12 10 8 00 01 4 5 7 6 00 0 01 1 5 13 9 11 12 13 15 14 11 3 7 15 11 10 8 9 11 10 10 2 6 14 10 †¢ Notice that the K-map is labeled so that horizontally and vertically adjacent cells differ only by one bit. 11 Continue †¦ †¢ The K-map for both SOP and POS form are shown below: C D C D CD C D AB AB AB 0 1 3 2C+D C+ D C + D C +D A +B 0 1 3 2 4 5 7 6 A+B A+B A +B 4 5 7 6 12 13 15 14 12 13 15 14 AB 8 9 11 10 8 9 11 10 SOP form (minterm) POS form (maxterm) †¢ †¢ The simplified SOP expression can be obtained by properly combining those adjacent cells which contains ‘1’ This process of combining adjacent minterms is known as 12 looping Continue †¦ †¢ †¢ Each loop of minterms will form a group which can be represented by a product term When a variable appears in both complemented and uncomplemented form within a group, that variable is eliminated from the product term C D C D CD C DAB AB AB AB 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 group 2 group 1: C D( AB + AB ) = AC D group 2: AB(C D + CD ) = ABD Simplified SOP expression: Y = AC D + ABD 13 group 1 Continue †¦ †¢ Consider another K-map: C D C D CD C D AB AB AB AB 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 0 group 1 C D C D CD C D AB AB AB AB 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 14 group 1: ( A B + AB )(C D + CD ) = BD Simplified SOP expression: Y = BD group 1: C D ( A B + A B + AB + AB ) = C D Simplified SOP expression: Y = CD group 1 From truth table to K-map †¢ The content of each cell can be directly plot on the Kmap according to the truth table Consider the following example: 0 1 2 3 4 5 6 7 A 0 0 0 0 1 1 1 1 B C Y 0 0 1 0 1 1 1 0 1 1 1 0 0 0 0 0 1 0 1 0 1 1 1 0 B C B C BC B C A A 1 0 1 1 0 3 1 2 0 4 0 5 0 7 1 6 AB BC Simplif ied SOP expression: Y = A B + BC 15 Continue †¦ †¢ Consider the following 4-variable K-map A 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 B 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 C D Y 0 0 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 0 1 0 0 1 1 0 0 0 0 0 1 1 1 0 0 1 1 1 C D C D CD C D AB AB AB 0 0 0 1 1 1 0 1 0 0 1 0 3 0 0 0 ACD 2 4 5 7 6 12 13 15 14 AB 0 8 9 11 0 10 ABD Simplified SOP expression: Y = A C D + ABD 16 Continue †¦ †¢ Some guidelines: i. Construct K-map and fill it according to the truth table ii. Only loop cells in the power of 2, i. e. 2 cells, 4 cells, 8 cells and so on iii. Always start by looping the isolated minterms iv. Look for minterms which are adjacent to only one minterm and loop them together v. Proceed on to loop the largest possible groups, from eight minterms (octet), 4 minterms (quad) to 2 minterms (pair) vi.Obtain the product term for each group vii. The sum of these product terms will be the simplified SOP expression 17 Continue †¦ Exam ple: a. Obtain the simplify SOP expression for the truth table: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 B 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 C 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Y 0 0 1 0 0 1 0 1 0 0 0 1 0 1 0 1 C D C D CD C D AB AB AB AB A B CD 0 0 0 0 0 0 1 1 0 1 0 1 1 3 1 0 0 0 2 4 5 7 6 12 13 15 14 8 9 1 11 10 BD ACD Simplified SOP expression:Y = A B CD + ACD + BD 18 Continue †¦ b. Obtain the simplify SOP expression from the K-map: ACD C D C D CD C D AB AB ABC 0 0 1 0 1 1 1 0 0 1 1 1 ACD 0 1 0 0 A BC AB AB Simplified SOP expression: Y = A C D + A BC + ACD + ABC 19 Continue †¦ c. Obtain the simplify SOP expression from the K-map: alternative solution: C D C D CD C D AB AB AB C D C D CD C D AB A CD 0 0 0 0 AC D 0 0 1 1 1 1 0 1 0 0 0 0 AB D 0 0 0 0 AC D 0 0 1 1 1 1 0 1 0 0 0 0 B CD A CD AB AB AB AB Y = A CD + AC D + AB D Y = A CD + AC D + B CD 20 General Terminology for Logic Minimization †¢ †¢ Here, we define four terms to provide the basis for general function minimization techniques These terms are implicant, prime implicant, essential prime implicant and cover We refer to the K-map below in explaining each term B C B C BC B C A A 1 0 1 1 3 2 1 4 1 5 1 7 6 †¢ †¢ An implicant is a product term that could be used to cover minterms of the function In the K-map above, there are 11 implicants: 5 minterms: {A B C , A BC , AB C , AB C , ABC} 5 group of two adjacent minterms: {AB , AC , A C , B C , BC} 1 group of four adjacent minterms:{C} 21 Continue †¦ †¢ †¢ †¢ A prime implicant is an implicant that is not part of any other mplicant In the K-map, there are two prime implicant: C and AB An essential prime implicant is a prime implicant that covers at least one minterm that is not covered by any other prime implicants Prime implicant AB is essential as it is the only prime implicant that covers minterm 4 Prime implicant C is also essential as it is the onl y prime implicant that covers minterm 1, 3 and 7 A cover of a function is a set of prime implicants for which each minterm of the function is contained in (covered by) at least one prime implicant All essential prime implicants must be used in any cover of a function 22 †¢ †¢ †¢ Continue †¦ †¢ †¢ For the K-map above, the set of implicants { AB , C} represents a cover of the function A minimum cover contains the minimum number of prime implicants which contains all minterm in the function Consider the 4-variable K-map below: C D C D CD C D AB AB AB AB 1 1 Prime implicants †¢ C D C D CD C D AB AB AB 1 1 1 1 1 1 1 1 1 AB AB AB AB C D C D CD C D 1 1 1 1 Minimum cover 1 1 1 1 1 1 1 1 1 1 1 1 AB Essential prime implicants 23 Continue †¦ †¢ Consider another K-map C D C D CD C D AB AB AB AB 1 1 1 1 1 1 1 Prime implicants C D C D CD C D AB 1 1 1 1 1 1 1 1 1 1 AB AB 1 ABEssential prime implicants (minimum cover) 24 Don’t Care Conditions â₠¬ ¢ †¢ †¢ †¢ Some logic circuit will have certain input conditions whereby the output is unspecified This is usually because these input conditions would never occur In other words, we â€Å"don’t care† whether the output is HIGH or LOW Consider the following example: An air conditioning system has two inputs, C and H: – C will be ‘1’ if temperature is too cold (below 15 °C) Otherwise, it will be ‘0’ – H will be ‘1’ if temperature is too hot (above 25 °C) Otherwise, it will be ‘0’ – Output Y will be ‘1’ if temperature is too cold or too hot.If the temperature is acceptable, Y will be ‘0’ 25 Continue †¦ As there are two inputs, there are 4 possible logical conditions: C 0 0 1 1 H 0 1 0 1 Y 0 1 1 X meaning just nice too hot too cold ? Input condition C = 1, H = 1 has no real meaning, as it is impossible to be too hot and too cold at the same time We put a ‘X’ at the output corresponds to this input condition as this input condition cannot occur 26 K-map and Don’t Care Term †¢ Don’t care term, ‘X’ can be treated as ‘0’ or ‘1’ since they cannot occur In K-map, we can choose the don’t care term as ‘0’ or ‘1’ to our advantage A B C D Y 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 1 1 X 0 1 0 0 1 0 1 0 1 X 0 1 1 0 0 0 1 1 1 X 1 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 1 1 X 1 1 0 0 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 X C D C D CD C D AB AB AB 0 1 1 0 1 X 1 0 X X X X 0 0 1 0 AB Simplified Boolean expression: Y = AB + BC + A D 27 More examples †¦ C D C D CD C D AB AB AB AB C D C D CD C D AB AB AB AB 1 1 X 1 0 1 X 1 0 0 X X 0 1 X X 1 0 X 1 0 0 X 0 0 0 X X 1 X X Y = C D + BC + BD + A C D C D CD C D AB AB AB Y = B D + CD C D C D CD C D AB AB AB 0 0 1 0 1 X 1 1 0 1 X 0 0 0 0 0 1 1 X 0 1 X X 1 0 1 X X 0 0 X X 28 AB AB Y = ABC + C D + BD Y = A C + BD + AD Plo tting function in Canonical Form †¢ Logic function may be expressed in many forms, ranging from simple SOP/POS expression to more complex expressions However, each of them has a unique canonical SOP/POS form If a Boolean expression is expressed in canonical form, it can be readily plotted on the K-map Consider the following Boolean expression: †¢ †¢ †¢ Y = ABC + B CConvert to canonical SOP expression: Y = ABC + B C ( A + A) = ABC + A B C + AB C 29 Continue †¦ Y = ABC + A B C + AB C Plotting the canonical SOP expression onto K-map B C B C BC B C A A 1 1 0 0 BC 0 0 0 1 AC Simplified SOP expression: Y = B C + AC †¢ Consider plotting the following Boolean expression on K-map: Y = C ( A ? B) + A + B 30 Continue †¦ First, convert to SOP expression Y = C ( A ? B) + A + B = C ( AB + A B) + A B = AB C + A BC + A B (C + C ) = AB C + A BC + A B C + A B C B C B C BC B C A A 1 0 AB 1 1 1 0 BC 0 0 AC ?Y = A B + B C + A C 31Plotting K-map from SOP expression â₠¬ ¢ †¢ It is sometime too tedious to convert a Boolean expression to its canonical SOP form Consider the following Boolean expression: Y = AB (C + D )(C + D ) + A + B Convert to SOP form: Y = ( AB C + AB D )(C + D ) + A B = AB C D + AB CD + A B Convert to canonical form: Y = AB C D + AB CD + A B (C + C )( D + D) = AB C D + AB CD + ( A B C + A B C )( D + D) = AB C D + AB CD + A B C D + A B C D + A B CD + A B CD 32 Continue †¦ Y = AB C D + AB CD + A B C D + A B C D + A B CD + A B CD Plot the minterm on K-map: C D C D CD C D AB ABAB 1 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 AB AB B CD BC D Simplified SOP expression: Y = B C D + B CD + A B 33 Continue †¦ †¢ †¢ †¢ †¢ †¢ Boolean expression can be plotted on to the K-map from its SOP form Product terms with four variables are the minterms and correspond to a single cell on the K-map Product term with three variables corresponds to a loop of two adjacent minterms Product term with only two variables is a quad ( a loop of four adjacent minterms) Product term with a single variable is an octet (a loop of eight adjacent minterms) 1 cell 2 cellsY = A + BC + B CD + ABCD 4 cells 8 cells 34 Continue †¦ †¢ Consider the previous example: Y = AB C D + AB CD + A B minterms 4 cells †¢ †¢ †¢ Both minterms are directly plotted on the K-map The loop which corresponds to A B is drawn on the K-map The cells inside the loops are filled with ‘1’ C D C D CD C D AB AB AB AB 1 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 AB AB C D A B CD 35 Continue †¦ †¢ Consider the following Boolean expression: Y = ( A + B )( AC + D ) Convert to SOP form: Y = AC + AD + ABC + BD Plot the SOP onto K-map C D C D CD C D AB AB AB AB AC BD C D C D CD C D AB AB ill cells in loops with ‘1' 0 0 0 0 0 1 1 1 0 1 1 1 0 0 1 1 36 ABC AB AB AD Continue †¦ Obtain the simplified SOP expression from K-map: C D C D CD C D AB AB AB AB 0 0 0 0 0 1 1 1 0 1 1 1 0 0 1 1 Simplified SOP expression: Y = AC + AD + BD 37 Continue †¦ Example: Redesign the logic circuit below from its simplified SOP expression: A B C D Z Z = ( B + D )( B + D ) + B(CD + A D ) 38 Continue †¦ Z = ( B + D )( B + D ) + B(CD + A D ) = B + D + B + D + BCD + A BD = BD + B D + BCD + A BD C D C D CD C D AB AB AB 1 1 0 1 0 1 1 0 0 1 1 0 1 1 0 1 AB Z = BD + B D + A B 39 Simplification of Switching Function EEN1036 Digital Logic Design Chapter 4 part I Simplification of Switching Function 1 Objective s s s s Simplifying logic circuit Minimization using Karnaugh map Using Karnaugh map to obtain simplified SOP and POS expression Five-variable Karnaugh map 2 Simplifying Logic Circuits †¢ †¢ †¢ A A Boolean expression for a logic circuit may be reduced to a simpler form The simplified expression can then be used to implement a circuit equivalent to the original circuit Consider the following example: B C A B C + A BC Y AB C + AB C Y = A B C + A BC + AB C + AB C 3 Continue †¦Checking for common factor: Y = A B C + A BC + AB C + AB C = A C ( B + B ) + AB (C + C ) Reduce the complement pairs to ‘1’ Y = A C ( B + B ) + AB (C + C ) = A C + AB Draw the circuit based on the simplified expression A B C Y 4 Continue †¦ †¢ A Consider another logic circuit: B C Y Y = C( A + B + C ) + A + C Convert to SOP expression: Y = C( A + B + C ) + A + C = AC + B C + AC C hecking for common factor: Y = A(C + C ) + B C = A + BC 5 Continue †¦ †¢ †¢ Simplification of logic circuit algebraically is not always an easy task The following two steps might be useful: i.The original expression is convert into the SOP form by repeated application of DeMorgan’s theorems and multiplication of terms ii. The product terms are then checked for common factors, and factoring is performed wherever possible 6 Continue †¦ †¢ Consider the truth table below: A 0 0 0 0 1 B 0 0 1 1 0 C 0 1 0 1 0 Y 0 0 1 0 0 Minterm Boolean expression: Simplify to yield: Y = A BC + ABC + AB C Y = BC ( A + A) + AB C = BC + AB C 1 0 1 1 1 1 0 1 1 1 1 0 †¢ If minterms are only differed by one bit, they can be simplified, e. g.A BC & ABC 7 Continue †¦ †¢ More example: A 0 0 0 0 1 1 1 1 B 0 0 1 1 0 0 1 1 C 0 1 0 1 0 1 0 1 Y 0 1 1 0 0 1 1 0 Minterm Boolean expression: Y = A B C + A BC + AB C + ABC Minterms 1 and 5, 2 and 6 are only differ by one bit: Y = B C ( A + A) + BC ( A + A) = BC + B C A B C Y 0 0 0 1 0 0 1 0 0 0 1 1 1 1 1 1 0 0 1 1 0 1 0 1 0 1 1 0 1 0 1 0 Minterm Boolean expression: Y = A B C + A BC + AB C + ABC Checking and factoring minterms differed by only by one bit: Y = A C ( B + B ) + AC ( B + B ) = A C + AC = C ( A + A) =C 8 Continue †¦ †¢ †¢ †¢ Though truth table can help us to detect minterms which are only differed by one bit, it is not arranged in a proper way A Karnaugh map (K-map) is a tool, which help us to detect and simplify minterms graphically It is a rearrangement of the truth table where each adjacent cell is only differed by one bit By looping adjacent minterms, it is similar to grouping the minterms with a single bit difference on the truth table 9 Karnaugh Map †¢ †¢ A K-map is just a rearrangement of truth table, so that minterms with a single-bit difference can be detected easily Figure below shows 4 possible arrangement of 3-variable K-map A BC 0 0 01 1 11 3 10 2 C AB 00 0 01 2 11 6 10 4 0 1 4 5 7 6 0 1 1 3 7 5 AB C 0 0 1 1 BC A 0 0 1 4 00 01 2 3 00 01 1 5 11 6 7 11 3 7 10 4 5 10 2 6 10 Continue †¦ †¢ Figure below show two possible arrangement of 4variable K-map CD AB 00 0 01 1 11 3 10 2 AB 00 CD 01 4 11 12 10 8 00 01 4 5 7 6 00 0 01 1 5 13 9 11 12 13 15 14 11 3 7 15 11 10 8 9 11 10 10 2 6 14 10 †¢ Notice that the K-map is labeled so that horizontally and vertically adjacent cells differ only by one bit. 11 Continue †¦ †¢ The K-map for both SOP and POS form are shown below: C D C D CD C D AB AB AB 0 1 3 2C+D C+ D C + D C +D A +B 0 1 3 2 4 5 7 6 A+B A+B A +B 4 5 7 6 12 13 15 14 12 13 15 14 AB 8 9 11 10 8 9 11 10 SOP form (minterm) POS form (maxterm) †¢ †¢ The simplified SOP expression can be obtained by properly combining those adjacent cells which contains ‘1’ This process of combining adjacent minterms is known as 12 looping Continue †¦ †¢ †¢ Each loop of minterms will form a group which can be represented by a product term When a variable appears in both complemented and uncomplemented form within a group, that variable is eliminated from the product term C D C D CD C DAB AB AB AB 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 group 2 group 1: C D( AB + AB ) = AC D group 2: AB(C D + CD ) = ABD Simplified SOP expression: Y = AC D + ABD 13 group 1 Continue †¦ †¢ Consider another K-map: C D C D CD C D AB AB AB AB 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 0 group 1 C D C D CD C D AB AB AB AB 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 14 group 1: ( A B + AB )(C D + CD ) = BD Simplified SOP expression: Y = BD group 1: C D ( A B + A B + AB + AB ) = C D Simplified SOP expression: Y = CD group 1 From truth table to K-map †¢ The content of each cell can be directly plot on the Kmap according to the truth table Consider the following example: 0 1 2 3 4 5 6 7 A 0 0 0 0 1 1 1 1 B C Y 0 0 1 0 1 1 1 0 1 1 1 0 0 0 0 0 1 0 1 0 1 1 1 0 B C B C BC B C A A 1 0 1 1 0 3 1 2 0 4 0 5 0 7 1 6 AB BC Simplif ied SOP expression: Y = A B + BC 15 Continue †¦ †¢ Consider the following 4-variable K-map A 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 B 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 C D Y 0 0 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 0 1 0 0 1 1 0 0 0 0 0 1 1 1 0 0 1 1 1 C D C D CD C D AB AB AB 0 0 0 1 1 1 0 1 0 0 1 0 3 0 0 0 ACD 2 4 5 7 6 12 13 15 14 AB 0 8 9 11 0 10 ABD Simplified SOP expression: Y = A C D + ABD 16 Continue †¦ †¢ Some guidelines: i. Construct K-map and fill it according to the truth table ii. Only loop cells in the power of 2, i. e. 2 cells, 4 cells, 8 cells and so on iii. Always start by looping the isolated minterms iv. Look for minterms which are adjacent to only one minterm and loop them together v. Proceed on to loop the largest possible groups, from eight minterms (octet), 4 minterms (quad) to 2 minterms (pair) vi.Obtain the product term for each group vii. The sum of these product terms will be the simplified SOP expression 17 Continue †¦ Exam ple: a. Obtain the simplify SOP expression for the truth table: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 B 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 C 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Y 0 0 1 0 0 1 0 1 0 0 0 1 0 1 0 1 C D C D CD C D AB AB AB AB A B CD 0 0 0 0 0 0 1 1 0 1 0 1 1 3 1 0 0 0 2 4 5 7 6 12 13 15 14 8 9 1 11 10 BD ACD Simplified SOP expression:Y = A B CD + ACD + BD 18 Continue †¦ b. Obtain the simplify SOP expression from the K-map: ACD C D C D CD C D AB AB ABC 0 0 1 0 1 1 1 0 0 1 1 1 ACD 0 1 0 0 A BC AB AB Simplified SOP expression: Y = A C D + A BC + ACD + ABC 19 Continue †¦ c. Obtain the simplify SOP expression from the K-map: alternative solution: C D C D CD C D AB AB AB C D C D CD C D AB A CD 0 0 0 0 AC D 0 0 1 1 1 1 0 1 0 0 0 0 AB D 0 0 0 0 AC D 0 0 1 1 1 1 0 1 0 0 0 0 B CD A CD AB AB AB AB Y = A CD + AC D + AB D Y = A CD + AC D + B CD 20 General Terminology for Logic Minimization †¢ †¢ Here, we define four terms to provide the basis for general function minimization techniques These terms are implicant, prime implicant, essential prime implicant and cover We refer to the K-map below in explaining each term B C B C BC B C A A 1 0 1 1 3 2 1 4 1 5 1 7 6 †¢ †¢ An implicant is a product term that could be used to cover minterms of the function In the K-map above, there are 11 implicants: 5 minterms: {A B C , A BC , AB C , AB C , ABC} 5 group of two adjacent minterms: {AB , AC , A C , B C , BC} 1 group of four adjacent minterms:{C} 21 Continue †¦ †¢ †¢ †¢ A prime implicant is an implicant that is not part of any other mplicant In the K-map, there are two prime implicant: C and AB An essential prime implicant is a prime implicant that covers at least one minterm that is not covered by any other prime implicants Prime implicant AB is essential as it is the only prime implicant that covers minterm 4 Prime implicant C is also essential as it is the onl y prime implicant that covers minterm 1, 3 and 7 A cover of a function is a set of prime implicants for which each minterm of the function is contained in (covered by) at least one prime implicant All essential prime implicants must be used in any cover of a function 22 †¢ †¢ †¢ Continue †¦ †¢ †¢ For the K-map above, the set of implicants { AB , C} represents a cover of the function A minimum cover contains the minimum number of prime implicants which contains all minterm in the function Consider the 4-variable K-map below: C D C D CD C D AB AB AB AB 1 1 Prime implicants †¢ C D C D CD C D AB AB AB 1 1 1 1 1 1 1 1 1 AB AB AB AB C D C D CD C D 1 1 1 1 Minimum cover 1 1 1 1 1 1 1 1 1 1 1 1 AB Essential prime implicants 23 Continue †¦ †¢ Consider another K-map C D C D CD C D AB AB AB AB 1 1 1 1 1 1 1 Prime implicants C D C D CD C D AB 1 1 1 1 1 1 1 1 1 1 AB AB 1 ABEssential prime implicants (minimum cover) 24 Don’t Care Conditions â₠¬ ¢ †¢ †¢ †¢ Some logic circuit will have certain input conditions whereby the output is unspecified This is usually because these input conditions would never occur In other words, we â€Å"don’t care† whether the output is HIGH or LOW Consider the following example: An air conditioning system has two inputs, C and H: – C will be ‘1’ if temperature is too cold (below 15 °C) Otherwise, it will be ‘0’ – H will be ‘1’ if temperature is too hot (above 25 °C) Otherwise, it will be ‘0’ – Output Y will be ‘1’ if temperature is too cold or too hot.If the temperature is acceptable, Y will be ‘0’ 25 Continue †¦ As there are two inputs, there are 4 possible logical conditions: C 0 0 1 1 H 0 1 0 1 Y 0 1 1 X meaning just nice too hot too cold ? Input condition C = 1, H = 1 has no real meaning, as it is impossible to be too hot and too cold at the same time We put a ‘X’ at the output corresponds to this input condition as this input condition cannot occur 26 K-map and Don’t Care Term †¢ Don’t care term, ‘X’ can be treated as ‘0’ or ‘1’ since they cannot occur In K-map, we can choose the don’t care term as ‘0’ or ‘1’ to our advantage A B C D Y 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 1 1 X 0 1 0 0 1 0 1 0 1 X 0 1 1 0 0 0 1 1 1 X 1 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 0 1 1 X 1 1 0 0 1 1 1 0 1 1 1 1 1 0 1 1 1 1 1 X C D C D CD C D AB AB AB 0 1 1 0 1 X 1 0 X X X X 0 0 1 0 AB Simplified Boolean expression: Y = AB + BC + A D 27 More examples †¦ C D C D CD C D AB AB AB AB C D C D CD C D AB AB AB AB 1 1 X 1 0 1 X 1 0 0 X X 0 1 X X 1 0 X 1 0 0 X 0 0 0 X X 1 X X Y = C D + BC + BD + A C D C D CD C D AB AB AB Y = B D + CD C D C D CD C D AB AB AB 0 0 1 0 1 X 1 1 0 1 X 0 0 0 0 0 1 1 X 0 1 X X 1 0 1 X X 0 0 X X 28 AB AB Y = ABC + C D + BD Y = A C + BD + AD Plo tting function in Canonical Form †¢ Logic function may be expressed in many forms, ranging from simple SOP/POS expression to more complex expressions However, each of them has a unique canonical SOP/POS form If a Boolean expression is expressed in canonical form, it can be readily plotted on the K-map Consider the following Boolean expression: †¢ †¢ †¢ Y = ABC + B CConvert to canonical SOP expression: Y = ABC + B C ( A + A) = ABC + A B C + AB C 29 Continue †¦ Y = ABC + A B C + AB C Plotting the canonical SOP expression onto K-map B C B C BC B C A A 1 1 0 0 BC 0 0 0 1 AC Simplified SOP expression: Y = B C + AC †¢ Consider plotting the following Boolean expression on K-map: Y = C ( A ? B) + A + B 30 Continue †¦ First, convert to SOP expression Y = C ( A ? B) + A + B = C ( AB + A B) + A B = AB C + A BC + A B (C + C ) = AB C + A BC + A B C + A B C B C B C BC B C A A 1 0 AB 1 1 1 0 BC 0 0 AC ?Y = A B + B C + A C 31Plotting K-map from SOP expression â₠¬ ¢ †¢ It is sometime too tedious to convert a Boolean expression to its canonical SOP form Consider the following Boolean expression: Y = AB (C + D )(C + D ) + A + B Convert to SOP form: Y = ( AB C + AB D )(C + D ) + A B = AB C D + AB CD + A B Convert to canonical form: Y = AB C D + AB CD + A B (C + C )( D + D) = AB C D + AB CD + ( A B C + A B C )( D + D) = AB C D + AB CD + A B C D + A B C D + A B CD + A B CD 32 Continue †¦ Y = AB C D + AB CD + A B C D + A B C D + A B CD + A B CD Plot the minterm on K-map: C D C D CD C D AB ABAB 1 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 AB AB B CD BC D Simplified SOP expression: Y = B C D + B CD + A B 33 Continue †¦ †¢ †¢ †¢ †¢ †¢ Boolean expression can be plotted on to the K-map from its SOP form Product terms with four variables are the minterms and correspond to a single cell on the K-map Product term with three variables corresponds to a loop of two adjacent minterms Product term with only two variables is a quad ( a loop of four adjacent minterms) Product term with a single variable is an octet (a loop of eight adjacent minterms) 1 cell 2 cellsY = A + BC + B CD + ABCD 4 cells 8 cells 34 Continue †¦ †¢ Consider the previous example: Y = AB C D + AB CD + A B minterms 4 cells †¢ †¢ †¢ Both minterms are directly plotted on the K-map The loop which corresponds to A B is drawn on the K-map The cells inside the loops are filled with ‘1’ C D C D CD C D AB AB AB AB 1 0 0 1 1 0 0 0 1 0 0 1 1 0 0 0 AB AB C D A B CD 35 Continue †¦ †¢ Consider the following Boolean expression: Y = ( A + B )( AC + D ) Convert to SOP form: Y = AC + AD + ABC + BD Plot the SOP onto K-map C D C D CD C D AB AB AB AB AC BD C D C D CD C D AB AB ill cells in loops with ‘1' 0 0 0 0 0 1 1 1 0 1 1 1 0 0 1 1 36 ABC AB AB AD Continue †¦ Obtain the simplified SOP expression from K-map: C D C D CD C D AB AB AB AB 0 0 0 0 0 1 1 1 0 1 1 1 0 0 1 1 Simplified SOP expression: Y = AC + AD + BD 37 Continue †¦ Example: Redesign the logic circuit below from its simplified SOP expression: A B C D Z Z = ( B + D )( B + D ) + B(CD + A D ) 38 Continue †¦ Z = ( B + D )( B + D ) + B(CD + A D ) = B + D + B + D + BCD + A BD = BD + B D + BCD + A BD C D C D CD C D AB AB AB 1 1 0 1 0 1 1 0 0 1 1 0 1 1 0 1 AB Z = BD + B D + A B 39

Development and Globalisation Essay

GDP- Gross Domestic Product – the value of all the goods and services produced in a country in a year, in $US, usually expressed as â€Å"per capita† (per person). PPP (purchasing power parity)* figures are more useful. *Adjusted for loss of living GNP- The total value of goods and services produced by one country in a year, plus all net income earned from overseas sources, in $US. HDI- Human Development Index: It is a summary composite index that measures a country’s average achievements in three basic aspects of human development: health, knowledge, and a decent standard of living. Life Expectancy †¢ Literacy Rate †¢ Standard of Living (measured in GDP per capita) It gives a more complete picture of development of a country than GDP alone as it considers social factors and not just economic factors. Development Continuum Originally there were three groupings that made up the development continuum, they were: †¢ First World (those developed countr ies that had a democratic government and a strong economy) †¢ Second World (communist countries) †¢ Third World (UN developed countries) However as time has gone on newer economies have started to develop caused by different development patterns and speeds. The Development gap †¢ The gap between rich and poor countries †¢ Most commonly, the gap is thought of in terms of income/economics †¢ It also social, environmental and even political aspects There was a suggested North/South divide originating from the Brandt report in 1980, where the north accounted for 80% of GDP but only 20% of the population; however this too requires some artistic licence and is a very general way of dividing countries. There are more accurate ways of grouping countries as listed below and as countries move through the development continuum countries pass from one category to another: †¢ Developed (MDC’s – the most well developed countries eg. UK) †¢ Developing (Countries which are undergoing development – arguably they all are. Eg. Malaysia) †¢ LDC’s (Least Developed Countries – eg. Ethiopia) †¢ NIC’s (Newly Industrialised Countries – Have just finished development (10 years or so) Eg. China) †¢ RIC’s (Recently Industrialised Countries – Further behind than the NIC’s eg. Dubai) Centrally Planned Economies (The few remaining communist countries eg. North Korea) †¢ Oil Rich Countries (Countries rich in oil eg. Saudi Arabia) Causes for the Development Gap †¢ Colonialisation – colonial powers took resources from poorer countries †¢ Price of commodities is often controlled by TNCs ensurin g high profits for MEDC firms and low prices paid to LEDC producers – Fair trade set up in reaction to this. †¢ LEDCs are now primary producers – producing low cost commodities, e. g. bananas †¢ Primary commodities have fallen in price, or stayed steady, while commodities they need has increased, e. . oil What is preventing the Development gap from closing? †¢ Many LEDCs main industry is as primary producers – generally low profit †¢ Internatnioal trade dominated by TNCs †¢ Rapid The Asian Tigers Who or what are the Asian Tigers? Asian economies that have progressed economically at such substantial rates that have come to rival the earning capacity and quality of living of those being first-world countries – Taiwan, Hong Kong, Singapore and South Korea. Globalisation Globalisation: The increased inter-connection in the world’s economic, cultural and political systems. Positives |Negatives | |Allowed the movement of people m ore easily |Uncontrolled migration | |Increased foreign trade |Inequality in wealth | |More access to food, services, healthcare etc. ll over the world |Heavy environmental cost | | |Loss of countries individual cultures, global cutters | †¢ Globalisation began in the 19th century as there was the beginning of movement of people and goods; †¢ Increase in independence †¢ Increase in trade as well as the spread of industry †¢ Beginning of Trans National Corporations. Globalisation continued in the 20th century and was shaped by a number of factors including: 1. Emergence of free markets (capitalist economy) 2. Deregulation of world financial markets 3. The establishment of the General Agreements of Tariffs and Trade (GATT) –the WTO which sought to lower trade barriers. 4. The emergence of trade blocs 5. The establishment of the IMF and the World Bank 6. Development of global marketing and the continuing rise of TNCs. Flows †¢ Capital o ICT allows cheap, reliable and almost instantaneous communication o Allows sharing information o Allows transfer of capital o Allows Marketing around the world †¢ Labour o Improved transport for people Size of air craft o Low cost airlines o High speed rail links o Specialised workers- doctors, ICT etc. o Unskilled workers †¢ Products and services o Integrated networks o Goods handling o Computing logistics o Container revolution o Improved transport for goods o Global marketing, the world as one market and create products that fit various regional market places e. g. coca-cola and McDon alds Patterns of production, distribution and consumption Manufacturing has gone from developed countries to lower wage economies. This is known as the GLOBAL SHIFT, which is brought about by FDI by TNCs. Many LEDC’S have benefited from the transfer of technology which has meant these countries can raise their productivity without raising their wages to the level of the developed countries. This has lead to the de-industrialisation of richer countries and the focus on tertiary and quaternary industry. There has also been outsourcing of service operations, such as call centres, Mumbai, this extends the influence on a global scale also the employment costs are a lot lower even though there is a highly educated workforce. Positive and negatives of the global shift Positives for MEDCs |Negatives for MEDCs | |Movement of polluting industries away from their country |Could lead to wide spread unemployment | |Growth in LEDC’s may lead to demand for exports from MEDCs |Loss of skills | |Cheaper imports can keep the cost of living down benefiting the retail |Negative multiplier effect | |sector |Large gap between skilled and unskilled workers who may experience | |Labour market f lexibility and efficiency |extreme redeployment differences | |Development of new technologies leading to investment |deindustrialisation of some areas, such as the North | |Help to reduce inflation | | |Positives for LEDC’s and NIC’s |Negatives for LEDC’s | |Development of new industries Rapid urbanisation and rural-urban migration | |Increased employment |Westernised approach to economy | |Helps to reduce development gap |Increased environmental damage die to polluting industries | |Increased FDI and investment which can lead to improved services such as |Exploitation of labour | |infrastructure, health care and education |Disruptive social impacts | |Increased exports helps BoPs, and increases income and GDP |Over-dependant on one industry | |New technologies |Destabilises food supplies, less agriculture | | |Health and safety issues because of tax legislation | Patterns of production and processes In manufacturing there has been a global shift of marketing f rom MDC’s to LDC’s. This leads to Foreign Direct Investment (FDI) by the TNC’s. This has led to the de-industrialization of MDC’s but means that they can also be more productive due to the transfer of technology. Newly Industrialised Countries (NIC’s) First Phase †¢ Asian Tigers (Taiwan, South Korea, Hong Kong and Singapore) started to appear in the 1960’s, as developed countries looked at their less developed neighbours †¢ Rapid industrialisation due to the increased spread of TNC’s. †¢ They share similar characteristics which allowed for such industrialisation: – Large populations – Well educated populations – Culture – work ethic – Less rigid laws on health and safety – Government support through loans and grants Rely less on foreign support and set up their own businesses such as the Chaebols in South Korea, comprising of companies such as Samsung, LG and Hyundai †¢ This has now become a multinational an d located in several different countries. Second Phase †¢ As wage prices increased in the primary TNC’s (The Asian Tigers) †¢ Countries that could offer lower wage prices such as Malaysia, Indonesia, The Philippines and Thailand, Mexico and Brazil Third Phase †¢ China and India, Turkey, South Africa and the Philippines †¢ China has seen the fastest rate of economic growth of any country †¢ India’s industry is heavily based around services – which accounted for 50% of its total GDP. †¢ New TNCs are now being set up in Indian such as Infosys, Bangalore. Positives of India |Constraints of India | |Large English speaking population |Other countries are beginning to compete | |Costs 37% lower than China |Negative reaction in MEDCs | |Costs 17% lower than Malaysia |Rising wage rates | |Professional salaries ? of UK and USA |High cost of training | |Low telecommunication costs |Negative impacts on quality | |24 hour working to fit with tim e differences |Corruption and bankruptcy | |Huge labor force for labor intensive jobs e. g. all centers |Command economy, governemtn speding on subsidies rather than investment | |IT college graduates, 2 million/year |Infrastructure beyond major cities is poor | | |Literacy only 61% | Growth in the 21st Century Emerging Economies account for 70% of the global population, countries including the BRICs (Brazil, Russia India and China) as well as countries such as the UAE and South Africa. The increase has been due to: †¢ Raise living standards †¢ Increase opportunities for the population †¢ Increase FDI †¢ Become more of a world player with market to an international standard Countries at very low levels of economic development LDCs †¢ The countries were outlined by the United Nations and of the top 50 33 are in Sub-Saharan Africa. They are defined by the following: – Low incomes ($800 GDP per capita over 3 years) Human resource weakness, nutrition, hea lth, education and literacy – Economic vulnerability shown by signs of dependency on one industry †¢ Many of them suffer from widespread conflict, disease, geographical disadvantages, urbanisation and fast urban growth (demographically speaking). Quality of Life †¢ Most of the population cannot afford basic immunities †¢ Resources of such countries are not evenly distributed. †¢ Attempts to reduce poverty †¢ High population growth rate means that numbers living in extreme poverty are increasing. †¢ Many of these countries depend on FDI Debt †¢ From the 1970’s onwards some countries found themselves in a debt crisis because the borrowed large amounts from the developed world. For many countries at low levels of economic development that breaking free of poverty can only ever be a vision. †¢ There are certain policies being put in place by the IMF and the World Bank to help free the HIPCs †¢ They have provided debt relief and interest free loans. †¢ SAPs Structural adjustment programmes o Government spending cutbacks to fund debt repayments o Mexico was the first country o 3 main aims:- ? Promote exports- integration and liberalisation ? Reduce government spending- privatisation and cutting costs ? Encourage foreign investment o Both intermediate and poor countries have had SAPs applied o Some success but SAPs could make matters worse especially for the poorest people because:- Loss of credit and subsidies from the government ? Food production falling ? Devaluation of currency leads to dramatic rises in prices ? Less spending on health and education by government †¢ Another scheme, the Multilateral Debt Relief Initiative (MDRI) †¢ Aimed to cancel the debt of the HIPCs †¢ per capita income US$380 a year or less would be eligible for MDRI debt relief from the IMF’s resources Social Problems †¢ Lack of income, healthcare, education, sanitation etc. †¢ The Millennium Deve lopment Goals were set up specifically to help countries out of the cycle of poverty however they don’t look well to be completed in 2015 (the original target). Global, Social and Economic Groupings Trade Bloc is a group of nations who have joined to stimulate trade and benefit from economic cooperation. The countries involved agree to free trade between them but impose tariffs on goods from countries outside the bloc. Made for a variety of reasons: †¢ To further socio-economic development †¢ To increase alliances and trade †¢ To allow free movement †¢ To prevent war Types of groupings include:- †¢ Free trade areas- tariffs and quotas are reduced on goods between members and restrictions are put in place for goods coming in to the area e. g. NAFTA †¢ Customs unions- tariff on imports from outside the group e. g. Mercosur †¢ Common Markets- like customs unions but with greater freedom of movement of labour and capital, e. g. previously EU, current example East African Common Market †¢ Economic Unions-all of the above as well as member states are also required to adopt common polices in areas such as agriculture (CAP) fisheries, transport, pollution (Kyoto agreement), industry, energy and regional development e. g. EU Positives and negatives of trade blocs |Positives |Negatives | |Greater chance of peace between member nations. Having to share economic resources | |Faster and smoother economic development |Many countries will have to pay a large sum of money regularly to be in a | |Trade barriers removed |trade bloc | |Higher standard of living. |Elites can hold a disproportionate amount of power. | |Certain areas of a national economy can be supported – eg. Agriculture |If one courty falls in to ecomic crisis the rest of the member states are | |through the CAP. |effected | | People seeking work can move between member states– EU. Non-member states badly affected, lack of trade | |Possibility of a common currency- Euro |Loss of sovereignty | |Greater political influence |Loss of some finacail controls e. g. European central bank | |If countries become indebted member states can help bail out, Greece, | | |Ireland. | | Aspects of globalisation TNCs Transnational Corporations are companies that operate in over two countries – usually having their research and headquarters in the country of origin and locating the manufacturing plants overseas. As an organisation becomes more global, regional R&D and headquarters will develop. TNCs can be split in to three different groups according to what industry they are:- †¢ Resource extraction o Mining, gas extraction and oil producing o ExxonMobil, Royal Dutch Shell and BP †¢ Manufacturing o High-tech ? Computers, microelectronics, pharmaceuticals ? Hewlett Packard, GlaxoSmithKline and AstraZeneca o Consumer goods ? Motor vehicles, televisions and other electrical goods Many of these are assembly industries ? Ford, General Motors, BMW, Sony o Mass produced consumer goods ? Cigarettes, drinks, breakfast cereals, cosmetics and toiletries ? Coca-Cola, Kelloggs, Unilever, Heinz †¢ Service operations o Banking/insurance, advertising, freight transport, hotel chains, fast f ood outlets, retailers o Barclays, AXA, McDonalds and Tesco Growth of TNCs Why do TNCs expand to different countries? †¢ Larger populations with cheaper Labour Costs †¢ Better government policies such as grants, lower taxes and subsidies †¢ Less stringent rules on employment and pollution †¢ Fewer restrictions due to trade barriers †¢ Greater supply of raw materials To take advantage of trade within trade blocs †¢ Allowing them to grow thereby achieving economies of scale, reducing costs, finance new investment and compete in global markets †¢ Allow them to set up in markets that they want to sell in †¢ To acquire geographical flexibility so that they can shift resources and production between locations to maximise profits To serve a global market, TNCs may globalise production by:- †¢ Produce for the market in which the plant is situated †¢ Use one plant to produce for a number of countries †¢ Use integrated production †¢ Source parts in places where they assemble their products close to the market, GLOCALISATION Impacts of TNCs on a host country Positive Impacts |Negative Impacts | |Employment |Competition | |Injection of capital into the economy |Adverse effects on local companies which might not be as efficient | |More disposable income will create a demand for more |Environmental concerns | |housing, transport and local services |Less stringent pollution laws so more pollution allowed | |Multiplier Effect |Labour exploitation | |Investment by a TNC can trigger more employment by |Exploit cheap, flexiable, non-unionised labour forces in developing countries | |cumulative causation bringing greater wealth to the |Minimum age | |area |Urbanisation | |New working methods |Factories built in major urban centres leads to younger workers migration to the area | |Transfer of technology will create a more skilled |Negative effects on the rural areas | |workforce. |Removal of capital | |JIT developed |Prof it back to country of origin | |Escape Tariffs/trade barriers e. g. Nissan in |Outside decision making | |Sunderland |Plans effecting the development of plants are made in host country to boost profitability | |To take advantage of government incentives, subsides,|Little consiereation for local people | |EPZs (export processing zones) etc. |Dependancy on TNC | |Lower costs – especially labor |More westerniese approach to life | |To reach foreign markets more effectively | | |To exploit mineral and other resources | | Development Issues within the world Trade vs Aid Trade is deemed as the more sustainable path out of the two to economic development as it helps to promote the growth in the volume and value of goods, leading to jobs and greater incomes, some of this income will help to generate domestic demand leading to investment and the multiplier effect. This will also lead to rising living standards and gaining of skills by local people However it relies on three factors: †¢ Adoption of capitalism †¢ Economic growth to ‘trickle don’ so everyone benefits †¢ Promotion of free trade This is a similar path that was taken by the MDC’s and more recently the NIC’s. However many of these NIC’s had largely stable governments, a well educated workforce and they employed protectionist policies to stimulate growth e. g. tariffs and import quotas. However there are still problems with trade for a variety of reasons: They cannot be competitive in world markets as they need to invest in equipment, technology and training to make business productive and then infrastructure etc. †¢ Schemes like the CAP undercut mainly agriculturally based LDCs †¢ Wealth does not always trickle down to those who need it, like aid. †¢ Debts mean they would have to make millions before they made profit and due to the cuts imposed by the World Bank and IMF it often means there are public spending cuts especially on health care and education Aid can be either: 1. Bilateral – from government to government. 2. Multilateral – Where collective governments donate to an organisation (such as the World bank) who the distributes it to suffering countries. 3. Voluntary – Where small NGOs send workers to help. NGOs such as Oxfam Aid is not always in the form of money sometimes it is in the form of goods or technical assistance. There are also several ways aid can be delivered †¢ Tied aid o Will limit the power of nations and may eventually cause resentment †¢ Short-term aid o Usually following an emergency such as earthquakes or tsunamis o This can be help with rescue operations o Medical supplies, shelter, food and water †¢ Long-term development projects o Improving food availability and farming methods o Helping to provide improved shelter o Health care and education o Developing better livelihoods and improving income o CAFOD, Catholic Agency For Overseas Development †¢ Top down aid Throwing’ money at a country and allowing them to get on with it. o It usually focuses on large scale, expensive projects which are unsuitable for the local community. , such as HEP projects e. g. Nepal o It often doesn’t go to the people who need it most o Usually tied †¢ Bottom up o Mor e helpful to the local community however still bring their problems. o Small scale o Treat the individuals as individuals with creativity and intelligence o They work with people to create what the community most needs and supply the materials o They can undercut local business. However aid is not perfect and may critics say:- †¢ Aid does not reach those who need it the most, it is kept at the top by the government Aid is often used ineffectively on large scale, expensive projects which are often left uncompleted †¢ Sometimes countries don’t even have the correct infrastructure to use the aid effectively †¢ Dependency can be created which is often not sustainable is aid is a large proportion of national income †¢ Tied aid comes with strings attached, in some cases with every dollar given in aid $7 is given in return Economic vs. Environmental Sustainability ‘Development that meets the needs of today without compromising the needs of tomorrow’ This would be achieved by †¢ Human potential being improved †¢ The environment is used and managed to supply people on a long-term basis †¢ Implies social justice as well as long term environmental sustainability The capacity of the environment to provide resources and absorb increasing levels of pollution is the critical threshold controlling how far population can increase and economies expand sustainably The Rio Earth summit set out the following points for each aspect of sustainability. Environmental Principles: †¢ People should be at the centre of concerns †¢ States have the right to exploit their own environment but should not damage that of others †¢ Protecting the environment is integral to development †¢ People should be informed of projections for the future as well as the current environmental situation †¢ There should be environmental legislation and standards within states †¢ Laws should be enacted regarding liability for pol lution †¢ The movement of substances that are harmful to others should be restricted States should warn neighbours of any environmental unease †¢ EIAs (Environmental Impact Assessments) should be carried out on all major plans Economic Principles: †¢ The right to development must be fulfilled so as to meet development and environmental needs of present and future generations †¢ States should work together to eradicate poverty in order to decrease disparities in living standards †¢ The needs of the poorest countries should be put first †¢ Unsustainable production and consumption patterns should be eliminated †¢ States should cooperate to restore the earth’s ecosystem †¢ Scientific information and innovative technologies should be transferred to improve understanding States should support an open economic system, with few trade barriers and tariffs †¢ National authorities should endeavour to promote the internationalism of environmen tal costs, taking into account that the polluter should pay For anything to be effective it must strike the right balance between the three core principles – economic, social and environmental. Sustainable tourism myth or reality? As tourism is an increasingly expanding, billion dollar industry, it has increasingly been looked at to become more sustainable. Up until now it has followed this pattern: †¢ The environment attracts tourists for its attractions †¢ The money spent should help to maintain these features However as tourist flows increase it starts to do more harm than good, particularly to small areas which can’t deal with the massive influx, this can lead to the destruction of farm land to golf courses, and destroying natural habitats such as coral reefs, destroyed by water sports ,e. g. Philippines . Sustainable tourism ‘seeks not to destroy what it sets out to explore’ It attempts to make sure that: †¢ It preserves natural resources for future generations. †¢ The local communities and their culture are recognised as the most important in the tourist sector †¢ Economic benefits of tourism must partly go to those who are local to the area †¢ Everything is guided by the wishes of local people and communities At the Rio Earth Summit an environmental checklist was drawn up to show how the tourism industry could become more sustainable, these included: †¢ Waste minimisation, land use, re-use and recycling Energy efficiency, conservation and m anagement †¢ Transport †¢ Water (freshwater and waste) †¢ Land use planning and management †¢ Involvement of all stakeholders in the planning †¢ Involvement of staff, customers and communities in environmental issues Sustainable tourism is an industry committed to making a low impact on the natural environment and local culture, while helping to generate income and employment for local people. Tourist can help by: †¢ Being informed of the local culture, politics and economy †¢ Respecting local cultures †¢ Contributing to local cultures and tolerance †¢ Supporting local businesses and traditional values †¢ Use the least amount of local resources Ecotourism Is one of the fastest growing sectors within tourism †¢ An economic process by which rare and beautiful ecosystems and cultural attractions are marketed internationally to attract tourists †¢ Planning and management is an important factor o Capacity is managed o Encourages conservation, by educating local people and tourists o Focuses on the environment †¢ Criticised for being ‘egotourism’ in some cases. Sustainable ecotourism must : o Have a limit to the number of visitors to sustain the environment o Set up and run in cooperation with local people Case Studies Measuring Development- HDI HDI = 1/3 (life expectancy index) + 1/3 (education index)+ 1/3 (GDP index) Advantages |Disadvantages | |Political competitiveness |Does not take into account poverty | |More factors and reliable ones |PPP values change very quickly, inaccurate or misleading. | |Easy and cheap to collect data |Little sense of income distribution | |Sign of welfare in the future, improving health and education, |Quality of life does not seem to be that closely linked | |supply-side policies which can indicate the long-term patterns of AS |Doesn’t take account like war or political oppression. | |curve |Based on normative economics. |The success of government p olicy |Other measures such as access to internet might be more important. | |Easily comparable to other countries |Changes over time – ceteris paribus | Comparing 2 countries, Nepal and the UK |Measure |UK |Nepal | |HDI |28/187 |157/187 | |Life expectancy |80. |68. 8 | |Expected years of schooling |16. 1 |8. 8 | |GNI per capita, PPP adjusted |33,296 |1,160 | |Pop. Living on $1. 25 per day % |0 |78. 1 | |Population with at least secondary education , female : |1. 015 |0. 48 | |male | | | |Sustainability, Change in forest area (%) |9. 8 |-24. 5 | |% of population living in urban areas |79. 8 |19. 2 | Sub Saharan Africa – A country at low levels of economic development †¢ Sub Saharan Africa contains many countries with the lowest HDI ranking in the world. †¢ Many hold backs from development including war, disease, famine, debt, lack of infrastructure etc. They need large amounts of FDI that will not leave them in a worse situation than when they started. †¢ HDI, lowest ranked are Mali, Sierra Leone and Niger (all with an average of 0. 33) †¢ The top, ranked 119th and 120th in the world were Gabon and South Africa. TNC-Barbie in Taiwan -global shift of manufacturing †¢ Barbie, an American company Mattel , was produced a Japan in 1959 †¢ Has seen a global shift in manufacturing since it started. †¢ They moved to Taiwan in the 1960’s to take advantage of cheap labour costs and increased scale of production. †¢ At its peak Taiwan alone made more than 50% of all Barbie dolls in the world. †¢ Within 20 years Taiwan’s incomes began to rise which then led to Barbie moving somewhere else Mattel opened its first factory in China in 1987, wage prices were much lower and gradually production was mover there. †¢ Today Mattel produces Barbie’s in China, Indonesia and Malaysia – taking advantage of the second stage of NICs, the Tiger Cubs. Taiwan has further benefited from globalisation, as it is now home to companies that manufacture most computers and MP3 players such as BenQ TNC-Coca Cola – Global Marketing †¢ A company with a single product in which minor elements are tweaked for a different market. †¢ The company uses the same formulas, one with sugar and one with Corn Syrup for different markets. †¢ The bottle design is the same and is regulated depending on different countries standards. The only countries in the world that do not sell Coca Cola are Iceland, North Korea, and Antarctica. †¢ It is not sold in Iceland because all bottles must be the same shape as there is a large recycling project and coca cola refuse to change the shape of their bottle as it is part of their brand †¢ Labour costs may be lower in some countries, especially LEDC countries. Low labour costs = higher profits †¢ Legislation on working conditions, workers’ rights, health and safety, and the environment may be less strict in some countries. Relaxed legislation = lower overheads = more profit. †¢ Some countries may try to encourage multinationals to invest in their countries by offering lower tax rates and financial incentives. More favourable taxation = lower overheads = more profits. Unilever †¢ Unilever is a very widespread (branches in 90 countries) – include most countries in N ; S America, Europe, Australasia, Russia, China, India, a number of African countries = MEDCs, NICs and some LEDCs †¢ Sales also very widespread: A lot of African countries (many LEDCs and LLEDCs), Greenland, some countries which were part of the old Soviet Union (Kazakhstan, Uzbekistan, Turkmenistan, Tajikstan) †¢ Very few countries where Unilever has no presence Asian Tiger- South Korea †¢ 13th largest economy †¢ Strong government †¢ Highly skilled and motivated workforce †¢ Large amounts of trade with a positive BoP Problems †¢ Move to democracy takes time †¢ Large aging population †¢ Unequal pay for women and poor working conditions for 52 hours a week †¢ Pollution with poor construction in infrastructure, roads and sewage BRIC economies It is said that these countries will be dominant by 2050, these brick economies, don’t just rely on export industries like the 1st generation NIC’s. Brazil emerging economy †¢ President Lula, who began in 2003 took the economy out of dept and is now a stable country †¢ Generates $1. 5 trillion GDP/year †¢ Reliable power, with sustainable sources, such as hydro electric power, sugar cane, bio fuels, sustainable in own Tupi oil fields FDI is the 4th largest in the world, $45 billion each year †¢ Very easy to communicate with †¢ Emerging middle class †¢ Good highly skilled work force However there are some areas where Brazil will need to improve if its development is to continue being sustainable:- â € ¢ Will become a increasingly aging population †¢ Destruction of the rainforest †¢ Increasing cost of manufacturing †¢ Poor infrastructure †¢ Unequal society †¢ Slow national growth †¢ Increased crime and corruption †¢ 25% of the population live in poverty, favelas, Sao Paulo China – Third Stage of NIC Development †¢ In 1978 China began to follow the path of development of the Asian Tigers through an export driven road to development. Communist control was relaxed to allow this to do so. †¢ Foreign investment and joint ventures was encouraged. †¢ The internationalisation of the Chinese economy is also called the GUANXI NETWORK referring to the connections that exist between Chinese people and companies scattered all around the world †¢ In order to attract foreign industry in SE China, 14 ‘open’ coastal cities and 5 Special Economic Zones were set up. †¢ They allow tax grants which would give more prof it and were in favourable locations, geographically, to work. †¢ Labour was 80% cheaper in these areas †¢ There was a large amount of FDI for the bulk of the 21st Century †¢ Receiving up to $50 million per year. In 2006 they received $63 billion, their highest recorded figure. †¢ Sustained growth of up to 10% – one of the highest in the world. †¢ China became part of the WTO meaning that trade went from just over $250 billion to just under $1 trillion, almost quadrupling as they got greater access to global markets. Problems: †¢ Dramatic gap between rich and poor †¢ Huge rural/urban migration has left thousands in the countryside isolated as well as a decrease in agriculture meaning that poverty and famine has spread. †¢ Deterioration of environment and use of natural resources †¢ Dependent on the economy of the buyer †¢ Putting other populations before their own †¢ Development of two Chinas, east and west Chongqing –largest urban industrial city in the south-western part of china, 32 million people – A major focus on migration and of the western development policy – South of the Gorges Dam – Population grows by 500,000 people a year – Chicago of china – Heavy industry dominates – Large pollution problems, air sewage – 2000 tonnes of waste a day India – NIC driven by services Many people think that the Indian service sector is driven by call centres; however its involvement in the service sector it accounts for 50% of GDP as there is a high population of skilled workers. Software and IT companies have been attracted to India because:- †¢ Second-largest English speaking human resource in the world Investment friendly and supportive government politics †¢ Good infrastructure for power, transport and data communication †¢ World’s third largest brain bank †¢ Stable democratic with over 50 year of inde pendence †¢ Large market size †¢ Investment and tax incentives for exports in certain sectors such as electronics, telecom, software and R;D The UK and USA has fuelled the service sector in India as Indians migrated to gain skills which they would take back to their home country. Such skills were used to set up companies like Infosys which is now a TNC based in Bangalore. Bangalore has become the centre of ICT because:- †¢ First state to set up engineering collages First t set up a technology university †¢ Grants and tax incentives for the IT industry †¢ 1991 software technology park was built †¢ Now over 6 technology parks Infosys one of the largest software companies in India †¢ Founded in 1981 and had first foreign clients by 1987 †¢ Overseas offices in Boston and in MK †¢ 455 of workforce based in Bangalore Growth in the 21st century Dubai – An RIC †¢ Dubai is located in the United Arab Emirates †¢ Globally central as it is half way between London and Sigapore †¢ Fastest growing economy †¢ Its economy boomed upon the discovery of oil in the 1960’s. †¢ There was a growth of 300% between 1968 and 1975. †¢ There was rapid immigration. To make itself less dependent on oil, Dubai invested in new infrastructure which attracted FDI and now Dubai’s economy is heavily based around tourism as well as banking †¢ Oil and Gas currently occupy less than 5%. †¢ Borrowed money to fund many projects †¢ One of the country’s most effected by 2008 market crash, massive inflation problems †¢ Chinese and Indian banks brought a lot of Dubai’s debts Social problems †¢ Vast numbers of immigrants †¢ Poor working conditions, 20 hour day in some cases, because people took out loans to get to Dubai, and now due to little work they have to work all hours to get as much money as they can †¢ Live in poor conditions in tent cities out of the actu al city †¢ Passports are taken by employers on arrival Environmental problems †¢ High electricity cost and rising carbon emissions Sewage because there is not enough water, as the city is in a desert, water is more expensive than oil †¢ Nuclear waste †¢ Adu Dhabi, must look to help out by providing solar energy Countries facing low levels of economic development Nepal– †¢ One of the poorest countries in the world – 157/177 in HDI †¢ Its GDP per capita is also one of the lowest at $1,049 †¢ Shortage of energy, supplies †¢ Little money to spend on development †¢ Due to relief little transport infrastructure, remote communities †¢ Mainly subsistence farming and tourism †¢ 78. 1% of the population live on less than $1. 25 a day †¢ Little education and health care provisions HIPC- Tanzania †¢ 40% of the population live below the poverty line †¢ HDI is ranked 152 Life expectancy is 58. 2 †¢ Annual GDP per capita is $800 †¢ 75% of employment is based on agriculture †¢ Literacy rate is 64% Reasons for poverty †¢ Topography and climatic conditions – limit cultivated crops to only 4% of the land area †¢ Industry- mainly limited to agricultural products and light consumer goods †¢ Dependant on agriculture which accounts for half of GDP †¢ Products include coffee, cotton, tea, tobacco, cashews and sisal which are highly competitive and have falling prices †¢ Tourism is booming especially in the National Parks Attempts to help †¢ Government: a national poverty eradicated strategy- to reduce abject poverty 50% by 2010 The World Bank, IMF and bilateral donors have provided funds to rehabilitate Tanzania’s deteriorated economic infrastructure †¢ Structural Adjustment Policies, SAP’s, poverty reduction strategy papers †¢ â€Å"Vision 2025† programme set the goals of a high quality of livelihood by year 2025; peac e, stability and unity; a well educated society and a competitive economy based on sustainable growth and equity †¢ UN MDGs The results of attempts to help Tanzania †¢ Not improved quality of life †¢ Income and welfare indicators fell †¢ Even more dependent on foreign aid †¢ Increased environmental damage †¢ Pick up in industrial practice including gold and natural gas †¢ Increase private sector growth Recent debt relief in Tanzania One of the poorest countries in Africa even though it had some of its international debt written off †¢ $3 billion will be discounted over the next 20 years †¢ Tanzania’s total international borrowings of more than $7 billion Socio-Economic Groupings NAFTA †¢ USA, Canada, Mexico †¢ Set up in 1994 †¢ Aims – To eliminate trade tariffs between the three countries, pushed by the establishment of other socio-economic groupings like the EU. Mexico saw it as the best option as it had buil t up debt in previous years. |Pros |Cons | |Trade between member countries tripled in the first 13 years. Canada has been affected by the US increase | |Increased employment in the USA as manufacturing grew |Some US jobs have been lost as the plants have moved to Mexico | |Mexico got increased FDI as other countries wanted to locate inside |Dumping in Mexico | |NAFTA. |Mexico is being exploited because o less rigid pollution laws which | | |affects surrounding countries | EU 27 member states, set up in 1957 as the European Economic Community Aims – †¢ Promote social and economic progress amongst member states †¢ Have more government influence †¢ Introduce EU citizenship †¢ Prevent war †¢ Create better laws Positive impacts |Negative impacts | |Group activity on waste, pollution control and climate change |Loss of sovereignty over some decisions | |Common currency |Greece and Spain situation | |Large labour market due to ease of movement |Sharing fishi ng grounds | |CAP support |Power of elite | |Peace in EU |Small areas fell isolated | Unilever– TNC †¢ Set up in 1890 by William Hesker Lever, who owned a soap company which revolutionised Victorian hygiene †¢ Unilever was formed by the merger of the Dutch margarine producer ‘Margarine Unie’ as they had the common raw material palm oil †¢ In 1937 Lipton tea was acquired and in 1957 birds eye joined Colworth House facility near Sharnbrook continued research efforts in food preservation, animal nutrition and health problems associated with toothpaste, shampoo and other personal products. It is one of several R ; D centres †¢ In 2008, the companies had over 300 manufacturing sites in more than 100 countries across every continent †¢ Unilever employs over 170,000 people and has annual company revenue of over $50 billion in 2007. †¢ Unilever has had problems with animal testing, child labour and deforestation due to the use of palm oil CA FOD- long term and short term aid Aims are to promote long-term development; respond to emergencies; raise public awareness of the causes of poverty; speak out on behalf of poor communities; and promote social justice Long-term aid †¢ Improving food availability and farming methods †¢ Helping to provide improved shelter †¢ Health care and education †¢ Developing better livelihoods and improving income Short-term aid †¢ Provide aid to disaster stricken countries †¢ Set up temporary shelters for those left homeless Democratic Republic of Congo (Kinshasa ; Goma), Ethiopia, Kenya Swaziland – top Down Aid †¢ Top down development is usually difficult as often hundreds of thousands of people’s needs need to be ‘catered for’ and it is difficult to satisfy everyone. †¢ The ideal goal is a communist state with a ‘one size fits all’ approach. †¢ Swaziland is in Southern Africa. It is ranked very low in the world for human development. †¢ Many individual concerns to deal with which weakened the country, AID’s, famine and drought. †¢ The number of orphans was increasing as the death rate did correspondingly. à ¢â‚¬ ¢ Several branches of the United Nations which were trying to help them such as the UN food programme, and a many NGO’s. †¢ They were distributing imported food to hundreds of thousands of people which was ultimately a good thing. †¢ However, the farmers of the local area were not able to sell the produce that they grew †¢ Therefore not able to take advantage of the wet season that blessed them. †¢ There was also a state of dependency Difficult to draw the line between those who should receive aid and those who did not. Other top down aid include large scale projects such as building dams and HEP stations like those proposed in Nepal, this can lead to the loss of valuable farm land and can limit the water downstream, leading to widespread droughts. Nepal, FoST – Bottom Up Aid †¢ Foundation of sustainable technologies †¢ Treats people as individuals with ideas and creativity. †¢ Due to the lack of energy in Nepal and the reliance on wood, leading to deforestation and help problems in the home due to the amounts of smoke †¢ Subsides the purchase of products including solar cookers and no-smoke indoor cookers Educates people on how to make briquettes, which produce no smoke from waste, to prevent deforestation †¢ However there are limited resources to make the solar cookers and there for they are limited and rely on donations †¢ Not every community has the money to buy the equipment or has access to finding out about products †¢ Not sustainable in the long run if the donations stop Overall top down and bottom up development are both ways of narrowing the development gap, the gap between rich and poor countries. Both, like anything in life have pros and cons however the possible way forward is through micro-credit loans which give people the credit and respect that they deserve. This creates a successful and sustainable way of life and helps to lift individuals out of poverty. Economic vs. Environmental Sustainability Holes bay |Economic |Environmental | |High unemployment especially in Hamworthy gate |Ramsar and SSSI sites rare birds and invertebrates | |30 Ha of unused land, power station site |2nd largest natural harbor in the world | |Poor access to Poole town centre | | The construction of the twin sails bridge Environment:- direct flow around the support pillars of the bridge causing deposition behind the pillars, †¢ May affect the tidal flats within holes bay, and Poole harbour †¢ Sediment becoming trapped within Holes bay building up the marshes †¢ Tidal salt marshes, to the build up of humus causing the build up of peat rising the level of the and creating fresh water marshes within Holes bay †¢ Poole harbours marshes could decrease in size †¢ Destroying many habitats for bird’s invertebrates and plants alike. Economi c:- †¢ Greatly over budget with its total cost coming in at over ? 37m †¢ Engineers spotted a large crack in the surface of the bridge making it unsuitable for use The development of the power station site will also cause an increase drain on local recourses such as schools and the area might not be able to cope, †¢ Increase the flow of traffic over the bridges. †¢ Not enough jobs generated in the area †¢ Increased population density and increased unemployment. †¢ Increased crime Brazil- Curitiba †¢ 2 million people in the population †¢ city wide service to recycle products †¢ Recycling and garbage system prevent waste issues, organic and nonorganic, with two different trucks for different types of rubbish †¢ The rubbish is sorted and distributed and reused this means that 2/3 of rubbish is recycled †¢ It also creates more jobs to help reduce unemployment Jaime Lerner, was an architect and later became mayor and designed the cur rent layout of Curitiba †¢ The city has changed from being an agricultural area to a more industrial city †¢ Flood problems have also been solved by building the parks on the flood plains and making artificial river banks around them this also prevents squatting and slums appearing in the parks †¢ Is home to many multinational industries, such as Nissan, Renault, Volkswagen, Audi, Volvo, HSBC, Siemens, ExxonMobil, Electrolux and Kraft Foods †¢ The per capita income for the city is $ 17,977 Sustainable tourism Nepal – concentrated in certain areas such as Khumbu, Chitwan National Park, Annapurna National Park and the Sagarmartha National Park, The number of tourists increasing from 526,705 in 2007 to 710,547 in 2011, – Actions must be taken in order to preserve Nepal. – Problems with air pollution from the transport of tourists and fires getting trapped in the valleys due to the high mountains – Increased demand for water and food suppl ies, taking away goods from the locals – The same tracks are used by all of the tourists, erosion and destabilises the soil – Increased the risk of landslides. – Some tourists are also not respectful of people’s culture and the wildlife – Poor sewage disposal – Khumbu region problem with the amount of waste generated by trekking teams – 500kg per team all waste must be taken down the mountain rubbish there have been clean up operations carried out during training and acclimatisation time of people who wish to climb Mt. Everest †¢ for people to pay the Sherpa’s to carry down peoples rubbish †¢ Nepalese Government has begun charging deposits on tourists and are only returned if groups bring down their own rubbish †¢ Nepalese Government that they should limit the number of tourists †¢ Dismissed as it has been concluded that this will bring more harm than good, by limiting one of the country’s biggest ind ustries they could face increased widespread poverty. Kenya, Kigio Tourism is the 2nd largest contributor of GNP after agriculture. One example of where agriculture has been replaced by tourism is Kigio. Kigio Wildlife Conservancy is a 3,500-acre protected Conservancy †¢ 2 hours drive from Nairobi. †¢ Originally a cattle ranch, sold by the family to the local community who after a few years decided to forgo cattle ranching in favour of wildlife conservation. †¢ The community now receives a regular income †¢ Conservancy fee each guest pays helps towards the maintenance of the conservancy. †¢ Wide ranging habitats †¢ Many wild animals, honey badger, and over 200 bird species †¢ Protecting nearly 100 species of indigenous plant species which are being destroyed outside the conservancy. †¢ The Conservancy is at the forefront of ecotourism in the Rift Valley lakes area. Guests are encouraged to participate in low impact activities – o guided nature/bird walks, o cycling, fishing o Day or night game drives are conducted in open-sided 4Ãâ€"4 vehicles †¢ Lodges work closely with the local community and support several enterprises, schools and an orphanage. †¢ Guests can visit a group of widows that craft sisal baskets, a group that makes jewellery from recycled paper and a rug weaving factory. †¢ The lodges only sell what is made by the community and pay a fair price. †¢ A large percentage of the price is donated to the community fund. †¢ Every year, children from the local community and schools are invited to participate in ecotourism workshops †¢ To protect and improve their environment.

Food Deserts Essay Example | Topics and Well Written Essays - 250 words

Food Deserts - Essay Example For any starter in this industry, the secret is to run countless number of ads that will ultimately make the business known. Gray backs this assertion by explicitly giving a scenario of one store that trades in the sale of meat. It emerges that the business makes huge sales irrespective of the health concerns linked to the desert foods. Thus, the article offers an insight into the rising cases of obesity and other problems attributable to unhealthy diet. In the article â€Å"Food Deserts Leave Many Americans High and Dry†, John Matson gives a vivid illustration of the correlation between consumption of food deserts and health problems. He states that places where fresh foods often lack have high health problems (Matson, 2015). Therefore, the idea conveyed is that consumption of fresh foods connects with health promotion. It is surprising to find that regions that have little fresh foods will often have most of its stores and other outlets full of fast foods (Matson, 2015). Matson posits that the ongoing extensive scientific based research is necessary to establish such a correlation. Consumption of deserts foods also links to the household income, as well as the access to the road. Using the map, the nearest food desert in Liberty County, GA is in

In the communist manifesto karl marx states capital is... not a Essay

In the communist manifesto karl marx states capital is... not a personal, but a social power. Discuss what marx means by this - Essay Example In the book â€Å"The Communist Manifesto†, Karl Marx has shown the victory of the disciples of proletarian in the communist society. In the ancient period, all the powers of the old Europe were attracted towards the holy union in order to exercise the communism. The holy union was among the spies of German police and French radicals, Pope and Tsar and the Guizot and Metternich. During this period, it was highly realized by the Europeans that the communists must openly face the entire world and meet the study of communism with the policy of the party itself. Karl Marx had also stated that the capital is not a personal but a social power. A lucid explanation of this statement would be further discussed in the essay on the basis of the bourgeois, proletarians and the communists. Discussion on the Statement i.e. "Capital is... Not a Personal, But a Social Power" and Marx’s Use of the Word â€Å"Parasite† It has been a trend that the simple words ‘oppressorâ₠¬â„¢ and ‘oppressed’ have marked several histories of open fights, which ended with a revolution among the different classes of people in the society or destruction of a particular class of people. Likewise, the revolutionary action among the bourgeois and proletarians resulted in the abolition of the capitalists’ society and introduced communism in the society. Bourgeois and proletarians are the two major dimensions of the communists’ society in the ancient times. Bourgeois were the modern capitalists acting as the owner of the production activities and the employer of the labors. On the other hand, proletarians were the group of laborers who did not have their own modes of production and were compelled to sell their labor power to the bourgeois. At that period of time, bourgeois were holding the supreme power in the society as they were the middle class owners of the production activities and the labors. The labors were the proletarians who had no power in the society rather they were treated as the private labor of the bourgeois. The proletarians were compelled to sell their labors to the bourgeois in order to earn their living. The proletarians were suppressed by the bourgeois as they had no rights of property and self-esteem in that society. Nonetheless, it was frequently observed that the communists had represented the interests of the proletarians as a whole in the movement during their fight for the property and rights1. The communists had never opposed the other working class entities of the society. They always formed similar party to that of the working class. They served the similar aims of the party as the proletariat does. The distinction between the communists and the other working parties arrive on the basis of two of the grounds. The first base is that the communists had brought the common interest of the proletarians in light during their national fight in various countries. The other is that the communists were sig nifying the interests of all the parties in the movement as a whole during the stages of development of the proletarian society. These two characteristics of the communists not only made them different from the other working class parties in the world but they had also made them the most advanced party in the entire world. The communists had the similar aim to that of the proletarians. The aims of both these parties were end of the bourgeois superiority, development of proletariat into a class and invasion of the political

Professional Values and Ethics Paper Essay Example | Topics and Well Written Essays - 500 words

Professional Values and Ethics Paper - Essay Example it for work that we have not done.† (OLeary) The struggle for existence is immense in the current world and hence people quiet often keep values and morality at some convenient places alone rather than the entire life situations. Those who stick with morality or values may be seen as fools by the current world. Only those people who have sound insight over their life philosophy may try to adhere with values in their professional life. But it is necessary to keep values at the higher places to avoid unnecessary problems even in the current professional world. â€Å"The concept of Professional Ethics is partly comprised of what a professional should or should not do in the work place† (Mclarty, Mcburney &Stevetuff) I know a person who has been promoted for the high degree of values and ethics exhibited at work place. This fellow was working in the planning department and forced to continue in the second shift because of his reliever’s absenteeism. Unfortunately, even the person who was supposed to come in the third shift was also absent on that particular day and my friend decided to stay back even for the third shift in order to keep the planning processes intact. The plant manager has noticed his commitment and immediately he arranged vehicle and send him back to his home after the essential jobs were completed. In response to the high degree of commitment exhibited by my friend, he has been promoted immediately. â€Å"Professional Ethics concerns ones conduct of behavior and practice when carrying out professional work.† (Davison & Kock) It is possible for an employee to leak out the company secrets to its competitors for individual benefits. But such habits will definitely adversely affect the organization in which he is working. For example, if a company develops a new product to capture the market, the whole things about the new product and its specialties may be needed to keep as a secret up to certain time period for the success of the product. If an

Technology management Essay Example | Topics and Well Written Essays - 500 words

Technology management - Essay Example It should link to other business processes that the firm supports. In this case, it is called Business Service Catalogue. For it to be considered as a Technical Service Catalogue, it should provide a technical view of services. This view is not provided to the customers, and is linked with the configuration items which are necessary to deliver the service. SCM makes sure that the customers agree with the terms and conditions of the IT services, and understand their usage. Hence, SCM establishes a strong relationship between IT services and the business. Brewster et al. (67) write in their book that SCM makes sure that the service is aligned with business needs â€Å"by providing clear and consistent information on services in a language that the customers will understand and in a format that customers will want to use, thus enabling a constructive dialogue about IT services where all parties have a common understanding of what is being discussed.† This means that SCM is a customer-oriented administration of IT service delivery. A Business Service Catalogue simplifies, for the customers, the ordering of standard services, because it simplifies the terms and conditions so that the customers may be able to understand them; makes the process of ordering easy enough for them; and, offers them a lucid and dependable self-service mechanism, which they can avail for ordering of services. Likewise, a Technical Service Catalogue is an efficient source of all technical knowledge that the service provider needs in order to make the deli very of services well-organized and more reliable. Hence, the service provider can have a better idea of all risks, vulnerabilities, strengths, and weaknesses, of the process of service delivery. This idea is important to make the services better aligned with business needs. Service catalogues need to be managed regularly, so that it is

Biology summary of one cephalopod, one bivalve and one chiton of your Essay

Biology summary of one cephalopod, one bivalve and one chiton of your choosing - Essay Example ales use the hectocotylus (a special arm) to dispense packets of sperm (spermatophores) from the reproductive tract’s terminal organ/ cephalopod penis, into the mantle cavity of the females. In benthic octopuses, it is the third arm on the right that serves as the hectocolylus. A few months following this mating process, the males die, and in some octopus species, females have the conditions to keep viable sperms within their bodies until their eggs reach maturity. After fertilization of the eggs, the female lays approximately 200,000 eggs, but such numbers vary depending on the kind of species, genera, families, and the individual octopus. While open octopuses mainly feed on fish, other cephalopods and prawns, the bottom dwellers, on the other hand, feed mainly on clams, whelks, polychaete worms and crabs. Using paralyzing saliva, octopuses inject their prey and break down their bodies using their beaks. As for shelled molluscs, an octopus feeds on them by drilling a hole thr ough their shells, inject their degrading saliva into the hole and extract the inner soft tissues (Campbell & Reece, 2005, p. 86). Octopuses can live in various parts of the ocean such as the ocean floor, pelagic waters and on coral reefs. These organisms have a keen eye sight (that can recognize light polarizations), a good sense of touch and statocysts that detect sound. Octopuses have no internal or external skeletons to enable them squeeze through tight spaces, are intelligent, fast and can mimic shapes of other creatures when hunting for food and are able to avoid predation due to their speed, ability to camouflage, presence of venom and expulsion of ink (Campbell & Reece, 2005, p. 90). An example of a bivalve is a scallop. Scallops belong to the kingdom animalia, phylum millusca, class bivalvia, order ostreoida, sub-orders pectinoida and pectinina, superfamily pectinoidea and family pectinidae. Scallops are bilaterally symmetrical with the scallop composed of two valves/ halves; the

Property valuation Essay Example | Topics and Well Written Essays - 1000 words

Property valuation - Essay Example Then there is valuation based on the type of property: whether commercial or residential. Generally, for a given location, the valuation of commercial property is much higher than residential property. The profession and income levels of the residents also influence the value of a property to a certain extent. "The Isle of Dogs now centres around Canary Wharf (Canary Wharf refers to the both the tower, the tube station, and the offices in its immediate vicinity). Canary Wharf is London's financial district. Businesses located in Canary Wharf include: Citibank, Credit Suisse, Barclays Bank and HSBC. Businesses from other industries, such as BP and Reuters, have also located in the area, but it is still dominated by the financial sector. This means that a significant proportion of the residents of E14 work in the financial sector, and earn high wages. It also means that the types of property here are predominantly new properties (built after the regeneration in 1981) designed for young executives rather than families."1 The above table shows the average estimated monthly rentals in different parts of London. Area 1covers localities like Kensington, Bloomsbury, St. John's Wood, Green Park, Westminster and other central areas. Being centrally located and having access to all amenities, this area is the highest valued one in terms of rentals. Area 2 covers the localities just adjoining Area 1. Kilburn, West Hampstead, Isle of Dogs, Elephant and Castle, Kennington, Dulwich, Brentford are the areas covered under this category. In the south, it extends till Raynes Park and Merton Park. In the north west, Woodford seems to be covered under this category, while surrounding areas do not belong to this category. Here, the rentals are slightly lower as compared to Area 1. Similarly, Area 3 is marked by the localities bordering localities under Area 2. Prominent among these are Kensel Garden, Strafford, Wallworth in the central area, Stanmore, Totteridge, Cockfosters in the north east and Strawberry Hill and Ki ngston in the south. There are a few areas like Surbiton, Bickley and Bromlay that stand out in the south among Area 4 and Area 5 categories. Area 4 consists of Bartnet, Endfield, Ponders End in the north and West Wickham and Ewell in the south. This category is spread out in all the four directions and can be bradly said to be on the periphery of the city. A few exceptions to this would be areas like Nunhead, Ladywell etc, that are located in almost central areas. Area 5 is almost on the outskirts of the city and thus lowest in terms of rent/yields. Recent Changes in Office Rentals Average office rents in the CBD (Central Business District) have recently fallen almost 38 % to $ 777.40 per sq. m, making it Europe's sixth most expensive business district. While London's Mayfair district is a premium business center and can be compared to Triangle d'Or area of Paris , rents have recently fallen in this area too. Even with a 45 % fall in its rental values, West End remains the most expensive office area in Europe till date with rental values to 961 euros per sq m.4 Conclusion Thus, while arriving at an agreement, an owner and tenant have to keep many factors in mind. While the importance of factors like location and amenities cannot be ruled out, market conditions will also have to be kept in mind. In the past one year, rentals have fallen by almost 50 % due to a plethora of reasons; changes in the sub prime lending rates and recession being the major ones. Even after the property has been let out for a certain period, there could be some market forces that might compel the owner to modify

Identify a development or industrial project or a suburban area Essay

Identify a development or industrial project or a suburban area - Essay Example The location of the project is shown in the figure below: Thinning trees is believed necessary to facilitate stand growth, enhance tree vigor and contain tree mortality due to more competition for resources among trees. However, root root (Pheilinus Weirii) was found rampant across all units and as many as 20% of the roots were found to be infected. Such diseased root stands run the risk of infecting nearby healthy trees and cause massive root decays in the adjoining areas. Further, reduced trees render the area vulnerable to winds which also aids in the transmission of the root disease to new areas. Other potential threats include increased susceptibility to forest fires and winter storms. Move to favour conifer species over Douglas fir tree types to improve plant diversity in the region (increased seed supply, improve resiliency to diseases and provide cover against diseases and insects) Analysis of the water resources is an important consideration for the present case study. It is used to assess any potential increases in new inflows, any changes in the channel morphologies, increase in turbidity and sediments. The key focal point of this issue is the Gunner lake’s drainage area which lies in the region undergoing the thinning project. The current conditions in the channel area have been a result of widespread road building and logging activities since the past 70-80 years. Once again, the focal point for the analysis of fish species and related habitat is the Gunner’s lake and its associated streams. It has been estimated that prior to human activities like rail and road construction, timber harvesting and settlement, the quality of fish habitat in the lake was far more complex and diverse and their population was much larger in comparison to current levels. The primary consideration of the section is to examine the major concerns on the soil resources in the area and analyze the effects of the proposed project (namely road building,

Criminal justice Essay Example | Topics and Well Written Essays - 500 words - 17

Criminal justice - Essay Example When a person studies law and is even given the license to practice it, one is made aware of the unforgiving unethical mistakes one can commit against the court among which is perjury and falsifying the documents of the court. This offense not only shows disrespect to the court but to the legal system and the American inhabitants at large all of which depend on the court and its legal officers to follow the law. Taking over the houses of other people is theft and a lack of justice and integrity. Instead of helping the owners or their relatives get their property back or even know of its existence as a lawyer, Sheldon went ahead to take over the property as his own intending to make millions off them through fraudulent means. The houses were abandoned but according to the law which he is well aware off, these are supposed to do to the state if no next of kin or living relative is acknowledged. The act committed by the lawyer amounts to lack of proper moral judgment a virtue that is a necessity in his career as an attorney of the court. Because of his unethical behavior and lack of guidance to the rest of his crook associates as a lawyer, he might be earning himself 15 years in jail for the counts brought up in court by the prosecutor. Obtaining money or property through fraudulent means always leads to negative consequences sooner or later. Attorneys and other court officers should be subjected to constant review of their property including bank accounts even offshore ones. This procedure should be carried out indiscreetly and randomly. This is in a bid to unveil those engaging in unethical actions that are also against the law. If this had been done, then Sheldon’s unethical scheme would have been unveiled as soon as it started saving him embarrassment, jail time and even his family and job. The other way to curb such unethical behavior is to carry out tough actions against those court officials

Cartoon and Japanese Society Essay Example for Free

Cartoon and Japanese Society Essay Japans animation boom began in the summer of l977, when the movie Uchu Senkan Yamato (Space Cruiser Yamato) captivated teenagers and young adults to emerge as a major box-office hit. The success of this sci-fi anime prompted a fundamental shift in the cultural status of animation. Even before Space Cruiser Yamato, Japan had produced a considerable number of animated films, but they were generally regarded as childrens fare or, at best, family entertainment; the few adult-oriented animated movies were not successful commercially. Space Cruiser Yamato was the first anime to demonstrate that the medium need not restrict itself to kiddies fare. Following suit, from the late l970s, Japan put out a steady stream of animated films geared to young adults, including Ginga Tetsudo 999 (Galaxy Express 999) and Kido Senshi Gandamu (Mobile Suit Gundam). Most of these were commercial successes as well, although critics dismissed these as exploitation films pandering to teenage taste. The attitude of film critics changed abruptly, however, with the 1984 release of Kaze no Tani no Naushica (Nausicaa of the Valley of the Wind), a film whose artistic quality was widely regarded as more than sufficient to hold the attention of adults. With this movie, writer-director Miyazaki Hayao overturned the conventional image of the anime director as a versatile hack, and was soon crowned as animes first genuine auteur. Of course, not all anime rose to the level of non-juvenile entertainment or art. In fact, in the late 1980s, with young adult anime showing signs of staleness, the focus began to revert to childrens films. Nevertheless, the genre never relinquished the commercial foothold it had gained during the young adult anime craze; furthermore, Miyazaki began to enjoy a large degree of freedom in his filmmaking, as did several other directors who subsequently achieved the status of anime auteur. The results of those efforts, particularly the anime produced by Miyazakis Studio Ghibli, are not simply movies with high box-office potential; they are in many instances artistically superior to the live-action films made in Japan, and they have won growing legions of fans overseas. During the 1990s, animation, spearheaded by the work of a few anime auteurs, emerged as the face of Japanese film, positioning Japan as the worlds undisputed anime superpower. And in 1997 — a full twenty years since anime took off — animations preeminence over live-action films in Japan was more apparent than ever. In a matter of months after its release, Mononoke-hime (Princess Mononoke), Miyazakis latest film to date which was then alleged to be his last directorial effort, broke every box-office record to become the biggest domestic movie hit of all time in Japan. In the languishing field of young adult anime, the avant garde sci-fi work Shin Seiki Evangerion (Neon Genesis Evangelion) scored a major box-office hit and won a huge cult following. Moreover, childrens anime are as popular as ever. In all, it appears that anime has taken center stage in the Japanese film industry, pushing live-action movies into the wings. Kenji (2002) opined that Animation became popular in Japan as it provided an alternative format of storytelling compared to the underdeveloped live-action industry in Japan. Unlike America, where live-action shows and movies have generous budgets, the live-action industry in Japan is a small market and suffered from budgeting, location, and casting restrictions. The lack of Western-looking actors, for example, made it next to impossible to shoot films set in Europe, America, or fantasy worlds that do not naturally involve Asians. The varied use of animation allowed artists to create characters and settings that did not look Japanese at all Now a bit about how animation gets to wherever you are today. In the dusty yet not-so-long-ago time, when old cities began to get overweight and thus suburban areas started to be a new synonym for the term eyesore, the post-LSD generation of the Northern hemisphere imported anime from the Land of the Rising Sun at approximately the pace of a snail-mail package sent from Alabama to Tibet. The riotous 1970s has just received enlightenment in this field of concern the quicker-witted Americans in the industry started to stop calling non-human-non-nature-non-animal motion pictures ‘cartoons’ and have used the word ‘animation’. Naturally the content of slim boxes of taped animation movies embarking there was then called ‘Japanese animation, and for the convenience of those who tend to misspell anything more than three-lettered it was promptly squeezed into ‘Japanimation, so no wonder that they still misspell it. Anyway, no derogatory wink was involved in the term Japanimation its just a matter of geoprofile for the product that has come in faster and in bulk during 1980s. The malicious intent is not there, if you really are so paranoid about such things; it is for instance in the term Japornimation, for which the Yoshiwara might have had an influence (i. e. modern sexually explicit and repulsively bloody anime movies). Meanwhile, in 1990s someone (probably the same person who snail-mailed from Alabama to Tibet) informed the Northerners that the Japanese themselves have always called the thing animation. From then on animation often replaces Japanimation in the lexicon, but it didnt blast the old word out of circulation usually attached to the Old School of diehard, seasoned, loyal and zealous anime fans (otaku) among the Americans, it is still valid to use Japanimation today in any case of generally useless elaboration such as this, plus the term anime is seen as too wide to refer to just the characteristic Japanese product anime could mean the entire baggage this planet must carry in the form of every kind of animation, including Beavis Butthead.