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Problem 15-8 (Algo) Explain in detail and describe the question Based on the precedence table below, identify the critical path, earliest start and finish, and slack for each task. Activity Duration (Days) Immediate Predecessor A 2 none B 5 none ? 5 none D 7 A 4 B F 6 ? G 1 D, E 7 F 4 F J 1 H K 5 I G, J, K MUAH MH pictureClick here for the Excel Data File a. Identify the critical path. OB-E-G-L O C-F-H-J-L O C-F-I-K-L O A-D-G-L b. Identify the earliest start and finish, and slack for each b. Identify the earliest start and finish, and slack for each task. (Leave no cells blank – be certain to enter “0” wherever required.) Task Immediate Predecessors Earliest Start (ES) Earliest Completion (EC) ? None B None ? None D A E B F ? G D, E H F F J H K 1 L G,J,K Task Slack Latest Start Immediate
 
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Toshihiro Nakamura, manufacturing engineering section manager, is examining the prototype assembly process sheet (shown in Exhibit 6.8) for the newest subnotebook computer model. With every new model introduced, management felt that the assembly line had to increase productivity and lower costs, usually resulting in changes to the assembly process. When a new model is designed, considerable attention is directed toward reducing the number of components and simplifying parts production and assembly requirements. This new computer was a marvel of high-tech, low-cost innovation and should give Toshiba an advantage during the upcoming fall/winter selling season.Production of the subnotebook is scheduled to begin in 10 days. Initial production for the new model is to be 150 units per day, increasing to 255 units per day the following week (management thought that eventually production would reach 324 units per day). Assembly lines at the plant normally are staffed by 10 operators who work at a 14.4-meter-long assembly line. The line is organized in a straight line with workers shoulder to shoulder on one side. The line can accommodate up to 12 operators if there is a need. The line normally operates for 7.5 hours a day (employees work from 8:15 A.M. to 5:00 P.M. and regular hours include one hour of unpaid lunch and 15 minutes of scheduled breaks). It is possible to run one, two, or three hours of overtime, but employees need at least three days’ notice for planning purposes.
The Assembly LineAt the head of the assembly line, a computer displays the daily production schedule, consisting of a list of model types and corresponding lot sizes scheduled to be assembled on the line. The models are simple variations of hard disk size, memory, and battery power. A typical production schedule includes seven or eight model types in lot sizes varying from 10 to 100 units. The models are assembled sequentially: All the units of the first model are assembled, followed by all the units of the second, and so on. This computer screen also indicates how far along the assembly line is in completing its daily schedule, which serves as a guide for the material handlers who supply parts to the assembly lines.

Exhibit 6.8: Notebook Computer Assembly Process SheetTASK TASK TIME (SECONDS) TASKS THAT MUST PRECEDE1. Assemble Cover. 80 None2. Install LCD in Cover. 53 Task 13. Prepare Base Assembly. 23 None4. Install M-PCB in Base. 31 Task 35. Install CPU. 23 Task 46. Install Backup Batteries and Test. 44 Task 47. Install Accupoint Pointing Device andWrist Rest. 30 Task 48. Install Speaker and Microphone. 42 Task 49. Install Auxiliary Printed Circuit Board(A-PCB) on M-PCB. 22 Task 410. Prepare and Install Keyboard. 23 Task 911. Prepare and Install Digital VideoDrive(DVD) and Hard Disk Drive (HDD). 47 Task 1012. Install Battery Pack. 8 Task 1113. Insert Memory Card. 6 Task 1214. Start Software Load. 10 Tasks 2, 5, 6, 7, 8, 1315. Software Load. 280 Task 1416. Test Video Display. 50 Task 1517. Test Keyboard. 50 Task 16The daily schedules are shared with the nearby Fujihashi Parts Collection and Distribution Center. Parts are brought from Fujihashi to the plant within two hours of when they are needed. The material supply system is very tightly coordinated and works well.The assembly line consists of a 14.4-meter conveyor belt that carries the computers, separated at 1.2-meter intervals by white stripes on the belt. Workers stand shoulder to shoulder on one side of the conveyor and work on the units as they move by. In addition to the assembly workers, a highly skilled worker, called a “supporter,” is assigned to each line. The supporter moves along the line, assisting workers who are falling behind and replacing workers who need to take a break. Supporters also make decisions about what to do when problems are encountered during the assembly process (such as a defective part). The line speed and the number of workers vary from day to day, depending on production demand and the workers’ skills and availability. Although the assembly line has 12 positions, often they are not all used.Exhibit 6.9 provides details of how the engineers who designed the new subnotebook computer felt that the new line should be organized.
Exhibit 6.9: Engineers’ initial design of the assembly line
ASSEMBLYLINE POSITION TASKS WORKSTATIONNUMBER LABOR TIME (SECONDS)1 1. Assemble Cover. (80) 1 802 2. Install LCD in cover. (53) 2 53 + 23 = 763. Prepare Base Assembly. (23) 3 4. Install Main Printed Circuit Board(M-PCB) in Base. (31) 3 31 + 23 + 44 = 985. Install CPU .(23) 6. Install Backup Batteries and Test. (44) 4 7. Install Accupoint Pointing Device andWrist Rest. (30) 4 30 + 42 + 22 = 948. Install Speaker and Microphone. (42) 9. Install Auxiliary Printed Circuit Board(A-PCB) on M-PCB. (22) 5 10. Prepare and Install Keyboard. (23) 5 23 + 47 + 8 + 6 + 10 = 9411. Prepare and Install Digital Video Drive(DVD) and Hard Disk Drive (HDD). (47) 12. Install Battery Pack. (8) 13. Insert Memory Card. (6) 14. Start Software Load. (10) 6 15. Software Load (100) 7 15. Software Load (100) 8 15. Software Load (80) 9 16. Test Video Display. (50) 6 50 + 50 = 10017. Test Keyboard. (50) 10 Empty. 11 Empty. 12 Empty. In words, the following is a brief description of what is done at each workstation:
Workstation 1: The first operator lays out the major components of a computer between two white lines on the conveyor. The operator then prepares the cover for accepting the LCD screen by installing fasteners and securing a cable.Workstation 2: The second operator performs two different tasks. First, the LCD screen is installed in the cover. This task needs to be done after the cover is assembled (task 1). A second independent task done by the operator is the preparation of the base so that the Main Printed Circuit Board (M-PCB) can be installed.Workstation 3: Here the M-PCB is installed in the base. After this is done, the Central Processing Unit (CPU) and backup batteries are installed and tested.Workstation 4: The Accupoint Pointing Device (touchpad) and wrist rest are installed, the speaker and microphone is installed, and the Auxiliary Printed Circuit Board (A-PCB) is installed. These are all independent tasks that can be done after the M-PCB is installed.Workstation 5: Here, tasks are performed in a sequence. First, the keyboard is installed, followed by the DVD and Hard Disk Drive (HDD). The battery pack is then installed, followed by the memory card. The computer is then powered up and a program started that loads software that can be used to test the computer. Actually loading the software takes 280 seconds, and this is done while the computer travels through positions 6, 7, and 8 on the assembly line. Computers that do not work are sent to a rework area where they are fixed. Only about 1 percent of the computers fail to start, and these are usually quickly repaired by the supporter.Workstation 6: The video display and keyboard are tested in this workstation.After assembly, the computers are moved to a separate burn-in area that is separate from the assembly line. Here, computers are put in racks for a 24-hour, 25°C “burn-in” of the circuit components. After burn-in, the computer is tested again, software is installed, and the finished notebook computer is packaged and placed on pallets for shipment to Toshiba distribution centers around the world.
Tweaking the Initial Assembly-Line Design
From past experience, Toshihiro has found that the initial assembly-line design supplied by the engineers often needs to be tweaked. Consider the following questions that Toshihiro is considering:What is the daily capacity of the assembly line designed by the engineers? Assume that the assembly line has a computer at every position when it is started at the beginning of the day. (Do not round intermediate calculations. Round down your answer to the next smallest integer.)
 
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A plant export company makes two products for export, A and B. Both products go through a four – stage process: seed, sprout, small plant, adult plant. The two products are produced in batches of 100 items and the time taken in hours, for each batch to go through each stage is shown in the table. Determine the optimal solution for this problem? Stage Product A Product B Hours available seed 12 18 240 sprout 30 45 450 small plant 20 60 480 adult plant 40 30 480 Profit contribution per batch of product A is $4 and for product B is $5.
 
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In the 1990s, KPMG, one of the “big four” accounting firms, began offering tax shelters to corporations and wealthy investors. In addition to standard audit and consulting services, KPMG aggressively developed and marketed a number of innovative ways for clients to avoid taxes. Not only did individuals and businesses reduce taxes on billions of dollars of gains, but also KPMG partners pocketed many millions for their assistance.

Acting like any business developing a new product, KPMG established a “Tax Innovation Center” to generate ideas and to research the accounting, financial, and legal issues.94 Previously, tax shelters had been individualized for particular clients, but the new ones were intended to be generic, mass-marketed products. Once a strategy was approved, it was energetically promoted to likely clients by the firm’s sales force. KPMG tax professionals were turned into salespeople. They were given revenue targets and urged to use telemarketing and the firm’s own confidential records to locate clients. The strategies—which bore such acronyms as OPIS, BLIPS, FLIP, and SOS—generally involved complicated investments with cooperating foreign and offshore banks that generated phantom losses that could be used to offset capital gains or income from other investments. The shelters were accompanied by opinion letters from law firms that assessed their legality. The gain to KPMG and its clients and the loss to the U.S. Treasury were significant. The four main tax shelters marketed by the firm generated over $11 billion in tax deductions for clients, which yielded at least $115 million in fees for KPMG and cost the government $2.5 billion in lost tax revenue.95

During the period in which the KPMG tax shelters were sold, no court or Internal Revenue Service (IRS) ruling had declared them illegal. However, KPMG had failed to register the shelters with the IRS as required by law. Registration alerts the tax authorities to the use of the shelters and permits them to investigate their legality. One KPMG partner attributed this failure to a lack of specific guidance by the IRS on the rules for registration and the agency’s lack of interest in enforcing the registration requirement.96 Furthermore, this partner calculated that for OPIS, the firm would pay a penalty of only $31,000 if the failure to register were discovered. This amount was more than outweighed by the fees of $360,000 for each shelter sold.97

Until a court or Congress explicitly outlaws a tax shelter, the line between legal and illegal tax strategies is often difficult to draw. The IRS typically employs the “economic substance” test:

Do the transactions involved in a tax shelter serve a legitimate investment objective or is their only effect to reduce taxes?

A tax shelter that offers no return beyond a tax saving is abusive in the view of the IRS. However, an IRS ruling is not legally binding until it is upheld by the courts, and the courts have occasionally held some shelters to be legal even if they do not involve any risk or potential return. One reason for such decisions is that tax shelters typically involve legitimate transactions combined in unusual ways. As one observer notes, “Most abusive shelters are based on legal tax-planning techniques—but carried to extremes. That makes it hard to draw sharp lines between legitimate tax planning and illicit shelters.”98 Even when a shelter like those sold by KPMG is found to be legal, a tax savings is almost always the only outcome. According to an IRS commissioner, “The only purpose of these abusive deals was to further enrich the already wealthy and to line the pockets of KPMG partners.”99

When a tax shelter is found by the court to be abusive, the usual outcome is simply a loss of the tax advantage so that the client pays what would be owed otherwise plus any penalties. The issuer is seldom sanctioned. KPMG and other marketers of tax shelters generally protect themselves, first, by having the client sign a statement affirming that he or she understands the structure of the transaction and believes that it serves a legitimate business purpose. This makes it more difficult for the client to sue the firm. KPMG also sent all related documents to its lawyers in order to protect them from disclosure by claiming lawyer–client privilege.

Although some partners at KPMG thought that the tax shelters were illegal and raised objections, others argued for their legality—and, in any event, their shelters were an immensely profitable part of the firm’s business. Aside from the huge fees, the motivation to market the shelters came from the KPMG culture, which New York Times business reporter Floyd Norris characterized as that of a “proud old lion.” He writes, “Of all the major accounting firms, it was the one with the strongest sense that it alone should determine … the rules it would follow. Proud and confident, it brooked no criticism from regulators.”100

What are the basic facts?

2. What are the ethical issues? What are the impact on each group, company, investor, employee, consumer, and/or society? 3 What are the alternatives? What is your decision? Justify it. What are strategies to overcome possible negative feedbacks?

 
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