1. Critically review article

Please note:

· A critical review requires you to summarise and evaluate each paper.

· To be critical does not mean to criticise in a negative way. It requires you to question the given information and view put forth by the author(s). It requires you to evaluate the issues raised in a paper.

· Evaluation means presenting the strengths and weaknesses of a paper.

· Overall, writing a critical review involves analysis and evaluation.

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Journal of Cleaner Production 40 (2013) 118e128Contents lists available at SciVerse ScienceDirectJournal of Cleaner Productionjournal homepage: www.elsevier.com/locate/jcleproUsing sustainability reporting to assess the environmental footprint of coppermininga,b a, b*S. Northey , N. Haque , G. MuddaCSIRO Minerals Down Under Flagship, Bag 312, Clayton South, Vic 3168, AustraliabEnvironmental Engineering, Department of Civil Engineering, Monash University, Clayton, Vic 3168, Australiaarticle info abstractArticle history:The energy, greenhouse gas (GHG) emissions and water intensity, or environmental footprints, of globalReceived 3 April 2012primary copper production have been estimated. The primary data have been collected from theReceived in revised formsustainability reports published by copper producing mines, operations and companies. The mines17 September 2012analysed in this paper are from Australia, Chile, Peru, Argentina, Laos, Papua New Guniea, South Africa,Accepted 20 September 2012Turkey, Finland, the USA and Canada. The typical range of energy intensity was found to be 10e70 GJ/Available online 3 October 2012t Cu, with an average of 22.2 GJ/t Cu. The range of GHG emissions was 1e9tCO -e/t Cu, with an2average of 2.6 t CO -e/t Cu. The large variation exists largely due to the form of copper produced, ore2Keywords:grade, sources of fuel and electrical energy, and to a lesser extent the reporting methods andCopperprocedures used by the companies. The water footprint averages 70.4 kL/t Cu but can range fromEmbodied energyseveral kilolitres to up to 350 kL/t Cu. Variation in water intensity is generally due to inconsistenciesGreenhouse gasesWater in reporting method, the geographical location of the mining operations, limited economies of scale ofLife cycle assessment production site, and the climate type (i.e. arid regions in Australia and Chile or temperate to sub-arctic climates in Canada or Finland). It is recommended…

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1. Convert the binary data “110101” into analog waveforms using following modulation
techniques:
a. Two level Amplitude Shift Keying
b. Two level Frequency Shift Keying
c. Two level Phase Shift Keying
d. Differential Phase shift keying
e. Four level Amplitude Shift Keying
f. Four level Phase Shift Keying
g. Eight level Amplitude Shift Keying
2. With fc = 1000 kHz, fd = 50 kHz, and M = 16 (L = 4 bits), using Multiple Frequency-Shift
Keying (MFSK), compute the frequency assignments for each of the sixteen possible 4
bit data combinations. 3. Draw the approximate Analog Modulation and Frequency Modulation waveforms in
complete steps for the following signal:
4. Draw the 16 QAM Constellation Diagram having four different amplitude levels and four
different phase levels.
5. Explain and draw the Error Detection Process for Cyclic Redundancy Check (CRC).
6. Compute the frame check sequence using Cyclic Redundancy Check (CRC) for the
following information:
Message = 111010110, Pattern = 101110
7. Compute the transmitted signal using Direct Sequence Spread Spectrum for the
following information:
Input: 101, Locally Generated PN bit stream: 011011010110, T = 4Tc
8. Explain why the square and circle shapes cells for cellular communications are not
appropriate as compared to hexagonal shape cells.

 

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1. Consult Paragraph 68 of PCAOB Auditing Standard No. 12. Next, consider a customer that receives extraordinary discounts and terms to purchase merchandise at the end of the year (e.g., the wholesaler that purchased grills from Sunbeam). Do you believe that an auditor has an obligation to investigate these type of situations during revenue testing? Why or why not

 

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1. 1) Did Donna and Cam create a binding contract for the purchase of the software?

2. 2) Are Harvey and Louis contractually bound to pay the delay fee to Flash Fort?

3. 3) Are Donna, Harvey and Louis required to pay the extra $220 for the carpet cleaning? (35)

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1. Detail the environments for a rational agent for the following tasks. State any assumptions in your reasoning.

a) Solitaire

b) Tic-Tac-Toe

c) Handwriting Analysis

d) Assembly Line Robotic Arm

e) Automatic Pilot

f) Medical Diagnostic System (Expert System)

 

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