1. Seaports are important in global supply chains. Their management plays an important part in minimizing waiting time for ships that visit seaports for loading and unloading cargo and port utilization. The Oakland seaport is a busy container seaport on the West coast of America, but it is a bit relaxed in the month of December. Based on the past data, it is observed that 6 ships arrive there, on an average, per day, and it takes 3 hours to unload a ship on an average, with a standard deviation of 4 hours. Determine the following: a. Minimum number of unloading facilities. λ=Arrival rate=6 u=Serving rate= 3 hrs (1/3 x 24)-8 ships per day Utilization (p)=2 μ=6/8=0.75 p/c should be less than 1.0 p/c<1 0.75/c<1 0.75/1
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COMPARISION AMONG DIFFERENT QUEUING SYSTEMS.
I NEED HELP WITH PART G,H,I,J &K.
Step by step
Solved in 6 steps with 1 images
Part e & f is incorrect
e.)Ls=3.125+0.75=3.875 ships
f.) Lq=(6^2(1/6)^2+0.75^2)/2(1-.75)=3.125 ships
g.)Ws=3.875/6=0.6458 days or 15.5 hours
- At Hewlett-Packard (HP), billions of dollars of product are being shipped - from computers and diagnostic devices to toner cartridges each year. Customer orders come in 24 hours a day, 365 days a year. Nearly 16,000 different products are requested daily and have to be shipped from six different warehouses which are located 30 or more miles apart. It often takes weeks to get the products into the customer’s hand. This is a serious problem if customers have contracts with HP stating deliveries are to be made in three (3) business days, or less. That means that from the time a customer calls the HP customer service line, they will have their replacement part and be back in operation within 72 hours or less, no matter where that customer is located. On average, delivery to customers takes 6+ days. It is imperative that HP guarantee for delivery of products and services are followed to protect their image, secure its position in the market place, increase its competitive advantage and its…Seaports are important in global supply chains. Their management plays an important part in minimizing waiting time for ships that visit seaports for loading and unloading cargo and port utilization. The Oakland seaport is a busy container seaport on the West coast of America, but it is a bit relaxed in the month of December. Based on the past data, it is observed that 6 ships arrive there, on an average, per day, and it takes 3 hours to unload a ship on an average, with a standard deviation of 4 hours. Determine the following: Minimum number of unlading facilities. Probability (each unloading facility is busy) Probability (each unloading facility is idle) Probability of 2 ships in the system and 4 ships in the system Average number of ships in the system, that is, number of ships in the line including the one being unloaded. Average number of ships waiting to be unloaded, that is, number of ships in the line excluding being unloaded. Average time a ship spends in the system, that…Sanchez Trucking has been experiencing delays at its ware-house operations. Management hired a consultant to findout why service deliveries to local businesses have takenlonger than they should. The consultant narrowed down theproblem to the number of work crews loading and unload-ing trucks. Each crew consists of six employees who workas a team on a variety of tasks; each employee works a full40 hours a week. However, costs are also a concern. Theconsultant advised management that they could supplementwork crews with short-term employees, at a higher cost, tocover unexpected needs on a weekly basis. Each work crewpermanently hired by Sanchez costs $3,200 per week inwages and benefits, while a crew of short-term employeescosts $5,000 per week. Complicating the decision is the factthat the weekly hourly requirements for work crews is uncer-tain because of the volatility in the number of deliveries to bemade. Deliberating with management, the consultant arrivedat the following data:
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- Consider the order delivery system of Heartha Hardware and Construction Supplies:- Customers (whether by bulk or retail) would line up in a counter where sales representatives will entertain them. It would take about 15 minutes before a customer will be entertained due to the number of customers being served by the sales representative and only about 4 sales representatives are on duty every day.- The sales representative will take down the customer’s order in the order slip with corresponding prices. On some cases, she will ask the person in-charge in the warehouse if the items are available. She then forwards the order slip to the cashier.- The cashier would sum-up again manually the order slip from the sales representative to check the accuracy of the footing of the totals as well as the prices indicated. This would take about 10 minutes, depending on the bulk of the order being placed.- The official receipt will be printed and will be given to the…Charles Lackey operates a bakery in Idaho Falls,Idaho. Because of its excellent product and excellent loca-tion, demand has increased by 25% in the last year. On far toomany occasions, customers have not been able to purchasethe bread of their choice. Because of the size of the store, nonew ovens can be added. At a staff meeting, one employeesuggested ways to load the ovens differently so that moreloaves of bread can be baked at one time. This new processwill require that the ovens be loaded by hand, requiring addi-tional manpower. This is the only thing to be changed. If thebakery makes 1,500 loaves per month with a labor produc-tivity of 2.344 loaves per labor-hour, how many workers willLackey need to add? (Hint: Each worker works 160 hours permonth.)Josie’s Sports Accessories has 12 operators who work 9 hours a day (no breaks), 7 days a week. They manufacture headbands with a standard minute value of 1.35 minutes. The workers produce 4,450 headband a day. How long will it take them to complete an order for 5,000 headbands?
- CarCity is a big retailer for car parts and accessories. The store stocks different types and sizes of car tire. One of the best selling tires is the Tiger Model R125, which is currently purchased from a factory in Indonesia. An analysis of the purchasing operation shows that approximately 3 labor hours are required to process a purchase order, regardless of the quantity purchased. Salaries in the purchasing Department average OMR 12 per hour, including employee benefits. In addition, a detailed analysis of 15 previous purchase orders showed that OMR 132 was spent on telephone, paper, and other consumables directly related to the ordering process . Shipping cost from Indonesia is OMR 230 for a container. A container has a capacity of 800 tires. The lead time for shipments from Indonesia is 15 days. Finally, CarCity’s financial analysts established a holding cost of 20% for this type of tire. The annual demand for the R125 tire is constant at a rate of 8400 units. The store purchases…Consider a two-stage plant-retailer supply chain. Lead time for the plant to fill retail orders is one week. The plant produces exactly to demand and does not keep inventory. Desired safety stock at the retailer is equal to half-week demand, and future demand is estimated by the average of the past two weeks. Find the impact on plan production (customer orders) if demand permanently increases from 100 to 110 units per period.Describe what distinguishes service sustems from production processes in terms of configuration and operation ? Its from operations management domain dont send it otherwise!!