A company wants to develop a level production plan for a family of products. The opening inventory is 550 units, and a decrease to 200 units is expected by the end of the plan. The demand for each of...

1. Complete the master schedule for Product X, including the projected available inventory and the ATP numbers. 2. From the master schedule for Product X and using the data given for components A, B,...

The following bill of materials represents the major components for a computer system. Complete the MRP records below. Note the following: Production plans (the MPS) for the 800 Deluxe computer...

In problem 6.2, what percentage of the time is the order actually running? In problem 6.2 An order for 100 of a product is processed on work centers A and B. The setup time on A is 50 minutes, and...

1. Develop a master schedule using the information above. 2. A customer has just requested a major order of 45 pumps for delivery in week 5. What would you tell the customer about having such an...

An order for 100 of a product is processed on operation A and operation B. The setup time on A is 50 minutes, and the run time per piece is 9 minutes. The setup time on B is 30 minutes, and the run...

The opening backlog is 1100 units. Forecast demand is as shown here. Calculate the weekly production for level production if the backlog is to be increased to 1200 units. 3 2 5 Total 4 6. Week...

An order for 250 bell ringers is processed on work centers 10 and 20. The setup and run times are as follows. It is decided to overlap the lot on the two work centers and to split the lot into two...

1. Using the data, develop a level production plan. How much extra cost (inventory and HR costs) are involved in this plan? What additional costs (both financial and nonfinancial) might be involved...

A computer carrying case and a backpack are familiar items to a student of manufacturing planning and control. Discuss the manufacturing planning and control activities involved in producing a...

Suppose you were hired to design an automatic irrigating system for a wealthy homeowner's garden. You determine that the flower beds should be kept at a water potential above -60 kPa, but not wetter...

If an alluvial forest soil were flooded for 10 days and you sampled the gases evolving from the, wet soil, what gases would you expect to find (other than oxygen and carbon dioxide)? In what order of...

Management has stated that it will tolerate one stockout per year. The forecast of annual demand for a particular SKU is 100,000 units, and it is ordered in quantities of 10,000 units. The lead time...

If the redox potential for a soil at pH 6 is near zero, write two reactions that you would expect to take place. How would the presence of a great deal of nitrate compounds affect the occurrence of...

The Williams 3D printer company was experiencing growing pains early in 2015. Jasper Williams had developed his own unique design for making a 3D printer with this relatively new technology that was...

For the following data, calculate the number of workers required for level production and the resulting month-end inventories. Each worker can produce 15 units per day, and the desired ending...

A company has an annual demand for a product of 2000 units, a carrying cost of $20 per unit per year, and a setup cost of $100. Through a program of setup reduction, the setup cost is reduced to $20....

The iron analysis of an arid-region soil showed an abundance of this element, yet a peach crop growing on the soil showed serious iron deficiency symptoms. What is a likely explanation?

Given the following product tree, complete the MRP records for parts X, Y, W, and Z. Note that parts X and Y have specified order quantities. Z(1) Y(3) W(1) X Z(2) Part X Lead Time: 1 week Lot Size:...

A company can ship LTL direct to customers in city A or use a public warehouse located in city B. It has determined the following data. Cost per pound for shipping LTL to city A is $0.70 + $0.30 per...

What are five typical characteristics of the production planning problem?

Name the soil taxonomy category and discuss the engineering implications of these soil taxonomy classes: Aquic Paleudults, Fragiudults, Haplusterts, Saprists. and Turbels.

For an SKU, the standard deviation of demand during the lead time is 150 units, the annual demand is 10,000 units, and the order quantity is 750 units. Management says it will tolerate only one...

Using the terms adhesion, cohesion, meniscus, surface tension, atmospheric pressure, and hydrophilic surface, write a brief essay to explain why water rises up from the water table in a mineral soil.

On the average, a company has a work-in-process lead time of 10 weeks and annual cost of goods sold of $30 million. Assuming that the company works 50 weeks a year: a. What is the dollar value of the...

Explain under what circumstances earthworm channels might increase downward saturated water flow. but not have much effect on the leaching of soluble chemicals applied to the soil.

The standard deviation of demand during the lead time is 100 units. a. Calculate the safety stock required for the following service levels: 75%, 80%, 85%, 90%, 95%, and 99.99%. b. Calculate the...

Because of its labor contract, a company must hire enough labor for 100 units of production per week on one shift or 200 units per week on two shifts. It cannot hire, lay off, or assign overtime....

A company wants to develop a level production plan for a family of products. The opening inventory is 500 units, and a decrease to 250 units is expected by the end of the plan. The demand for each of...

Calculate the amount of pure CaCO 3 that could theoretically neutralize the H + ions in a year's worth of acid rain if a 1-ha site received 500 mm of rain per year and the average pH of the rain was...

Iron deficiency is common for peaches and other fruits grown on highly alkaline irrigated soils of arid regions. even though these soils are quite high in iron. How do you account for this Situation...

Explain, in terms of the balance between gains and losses, why cultivated soils generally contain much lower levels of organic carbon than similar soils under natural vegetation.

Some scientists include plant litter (surface residues) in their definition of soil organic matter, while others do not. Write two brief paragraphs, one justifying the inclusion of litter as soil...

Calculate the quantity of gypsum needed to reclaim a sodic soil (EPS = 30%) when CEC = 25 cmolc/kg and pH is 10.2. Assume you want ESP no higher than 4%.

The addition of only 1 kg/ha of a nutrient to an acid soil on which lime-loving cauliflower was being grown gave considerable growth response. Which of the nutrients would it likely have been?...

In problem 6.12, what would be the manufacturing lead time if the second machine could not be set up until the setup on the first machine was completed? Would there be any reduction in manufacturing...

A company produces a line of golf putters composed of three models. The demand for model A is 500 per month, for B is 400, and for C is 300. What would be the mixed-model sequence if some of each...

In relation to soil temperature, explain why conservation tillage has been more popular in Missouri than in Minnesota.

A process costs $200 to set up. The run time is 5 minutes per piece and the run cost is $30 per hour. Determine the following: a. The fixed cost. b. The variable cost. c. The total cost and unit cost...

Explain how a brush fire might lead to subsequent mudslides, as often occurs in California.

What's in a name? Write a hypothetical soil profile description and land-use suitability interpretation for a hypothetical soil that is classified in the AquicArgixerolls subgroup.

Revisit your answer to question. Explain how soil structure in both the surface and subsurface horizons might modify your opinion of the merits of each farm.

If the cost of manufacturing (direct material and direct labor) is 60% of sales and profit is 10% of sales, what would be the improvement in profit if, through better planning and control, the cost...

a. Given the following master schedule, fill in the projected available and available to promise rows: b. A customer wants an order of 100 in period 4. What can you tell him? c. The customer from...

An SKU costing $10 is ordered in quantities of 500 units, annual demand is 5200 units, carrying costs are 20%, and the cost of placing an order is $50. Calculate the following: a. Average inventory....

For a particular SKU, the lead time is 6 weeks, the average demand is 90 units a week, and safety stock is 200 units. What is the average inventory if 10 weeks supply is ordered at one time? What is...

1. What are the key issues brought about in the conversation? What are the key symptoms, and what are the underlying problems? Be specific in your answers.? 2. Use the product information to develop...

For the following data, calculate the number of workers required for level production and the resulting month-end inventories. Each worker can produce 9 units per day, and the desired ending...

Given the following data, calculate a level production plan, quarterly ending inventory, and average quarterly inventory. If inventory carrying costs are $6 per unit per quarter, what is the annual...

A company fills plastic bottles with 10 ounces of shampoo. The tolerance is 0.1 ounce. The process has a standard deviation of 0.02 ounce. For the following situations, calculate the C pk and...

Back schedule the following shop order. All times are given in days. Move time between operations is 1 day, and wait time is 1 day. Due date is day 150. Assume orders start at the beginning of a day...

Suppose the homeowner referred to in question 4 increased your budget and asked to use the TDR method to measure soil water contents. What additional information about the soils, not necessary for...

A company wants to develop a level production plan for a family of products. The opening inventory is 100 units, and an increase to 150 units is expected by the end of the plan. The demand for each...

Give two specific examples for each of the four broad processes of soil formation.

If you were to build a house below ground in order to save heating and cooling costs, would you firmly compact the soil around the house? Explain your answer.

Contrast the properties you would expect in a soil with either a very high K value or a very low K value.

Why are narrow strips of grass planted on the contour sometimes called a "living terrace"?

The local fire department uses 10,000 alkaline flashlight batteries per year, which cost $4 each. The cost of ordering batteries is estimated to be $50. The current interest rate suggested by the...

What are the key issues in this case? Be sure to classify them as much as possible as symptoms versus core causes. Be sure to keep in mind the constraints as defined by the type of customer and the...

Jobs A, B, and C are in queue at work center 10 before being completed on work center 20. The following information pertains to the jobs and the work centers. For this problem, there is no move time....

A sandy loam soil under a golf course fairway has an organic matter content of 3% by weight. Calculate the approximate amount of nitrogen (n kg N/ha) you would expect this soil to provide for plant...

A soil mapper drew a boundary around an area in which he made six randomly located auger borings, two in soil A, with an argillic horizon more than 60 cm thick and strong brown in color, and the...

A production line is to run at 1000 units per month. Sales are forecast as shown in the following. Calculate the expected period-end inventory. The opening inventory is 600 units. All periods have...

The Amalgamated Mailbox Company manufactures a family of two mailboxes. The production plan and the MPS are developed on a quarterly basis. The forecast for the product group follows. The opening...

Given the following net requirements, calculate the planned order receipts based on the period order quantity. The EOQ is 250 units, and the annual demand is 4200 units. Week 4 8. 5 6 Net...

Many people assume that the amount of soil eroded on the land in a watershed (A in the universal soil-loss equation) is the same as the amount of sediment carried away by the stream draining that...

Name the five factors affecting soil formation. With regard to each of these factors of soil formation, compare a forested Rocky Mountain slope to the semiarid grassland plains far below.

A 100 g sample of a soil has been determined to contain the exchangeable cations in these amounts: Ca 2+ = 90 mg, Mg 2+ = 35 mg, K + = 28 mg, Al 3+ = 60 mg. (a) what is the CEC of this soil? (b) What...

A soil has been determined to contain the exchangeable cations in these amounts: Ca 2+ = 9 emote. Mg 2+ = 3 cmok. K + = 1 emote. Al 3+ = 3 cmolc. (a) What is the CEC of this soil? (b) What is the...

Calculate the number of grams of Al 3+ ions needed to replace 10 mot of Ca 2+ ion from the exchange complex of 1 Kg of soil.

Comment on the relative advantages and disadvantages of organic versus plastic mulches.

Compare the organic P levels in the upper horizons of a forested soil with those of a nearby soil that has been cultivated for 25 years. Explain the difference.

What are organoclays, and how can they be used to help remediate soils polluted with nonpolar organic compounds?

Using exponential smoothing, calculate the forecasts for the same months as in problem 8.3c. The old average for month 3 was 96 and = 0.4. What is the difference between the two forecasts for month...

An SKU has an annual demand of 10,000 units, each costing $15, ordering costs are $80 per order, and the cost of carrying inventory is 25%. Calculate the EOQ in units and then convert to dollars.

Given the following MRP record and an EOQ of 200 units, calculate the planned order receipts using the economic order quantity. Next, calculate the period order quantities and the planned order...

1. What are the key issues in this case? In other words, analyze the case to try to determine the true problems from the symptoms of those problems. How do these issues relate to the issue of...

Name two ecosystem services that soil organisms perform.

Figure 1.18 shows the volume composition of a loam surface soil in ideal condition for plant growth. To help you understand the relationships among the four components, redraw this pie chart to...

Explain the weathering significance of the ratio of silicon to aluminum in soil minerals.

Explain why Soil Taxonomy is said to be a hierarchical classification system.

A soil contains 4% humus, 10% montmorillonite, 10% vermiculite, and 10% Fe, Al oxides. What is its approximate cation exchange capacity?

An arid-region soil. when it was first cleared for cropping, had a pH of about 8.0. After several years of irrigation. the crop yield began to decline. the soil aggregation tended to break down, and...

Based on the buffer pH of your soil sample, a lab recommends that you apply 2 Mg of CaCO 3 equivalent to your field and plow it in 18 cm deep to achieve your target pH of 6.5. You actually plan to...

You want to plant a cover crop in fall to minimize nitrate leaching after the harvest of your corn crop. What characteristics would you look for in choosing a cover crop to ameliorate this situation?

What agricultural practices contribute to soil and water pollution, and what steps must be taken to reduce or eliminate such pollution?

Complete the following table to determine the run sequence for each of the sequencing rules. Sequencing Rule Process Arrival Due Operation Due Date Time (days) Date Date EDD ODD SPT Job FCFS 123 A. 5...

Weekly demand for an item averaged 100 units over the past year. Actual demand for the next eight weeks is shown in what follows: a. Plot the data on graph paper. b. Letting = 0.25, calculate the...

Given the following product tree, explode, offset, and determine the gross and net requirements. All lead times are 1 week, and the quantities required are shown in parentheses. The master production...

Visualize a slope in the landscape near where you live. Discuss how specific soil properties (such as colors. horizon thickness. types of horizons present. etc..) would likely change along the...

Use the key given in Figure 3.11 to determine the soil order of a soil with the following characteristics: a spodic horizon at 30 cm depth, permafrost at 80 cm depth. Explain your choice of soil...

Give four reasons why compacting a soil is likely to reduce the amount of water available to growing plants.

In this book and elsewhere, the terms soil organic matter are used to mean almost the same thing. How are these terms related, conceptually and quantitatively? Why is the term organic carbon...

How much limestone with a CaCO 3 equivalent of 90% would you need to apply to eliminate exchangeable aluminum in an Ultisol with CEC = 8 cmolc/kg and an aluminum saturation of 60%?

In what ways are soils involved in the greenhouse effect that is warming up the Earth? What are some common soil-management practices that could be changed to reduce the negative effects and increase...

During a year's time, some 250 kg nitrogen and only 30 g molybdenum have been taken up by the trees growing on a hectare of land. Would you therefore conclude that the nitrogen was mor essential for...

Soybeans growing on a recently limed soil show evidence of a deficiency of a nutrient. thought by some to be molybdenum. Do you agree with this diagnosis? If not. what is your explanation?

A park manager wants to fertilize an area of turfgrass with nitrogen and phosphorus at the rates of 60 kg/ha of N and 20 kg/ha of P. He has stocks of two types of fertilizers: urea (45-0-0) and...

Certain soil properties generally make land susceptible to erosion by wind or erosion by water. List four properties that characterize soils highly susceptible to wind erosion. Indicate which two of...

Discuss the types of reactions pesticides undergo in soils, and indicate what we can do to encourage or prevent such reactions.