A farmer in the Midwest has 1,000 acres of land on which she intends to plant corn, wheat, and soybeans. Each acre of corn costs $100 for preparation, requires 7 worker-days of labor, and yields a profit of $30. An acre of wheat costs $120 to prepare, requires 10 worker-days of labor, and yields $40 profit. An acre of soybeans costs $70 to prepare, requires 8 worker-days, and yields $20 profit. The farmer has taken out a loan of $80,000 for crop preparation and has contracted with a union for 6,000 worker-days of labor. A midwestern granary has agreed to purchase 200 acres of corn, 500 acres of wheat, and 300 acres of soybeans. The farmer has established the following goals, in order of their importance: (1) To maintain good relations with the union, the labor contract must be honored; that is, the full 6,000 worker-days of labor contracted for must be used. (2) Preparation costs should not exceed the loan amount so that additional loans will not have to be secured. (3) The farmer desires a profit of at least $105,000 to remain in good financial condition. (4) Contracting for excess labor should be avoided. (5) The farmer would like to use as much of the available acreage as possible. (6) The farmer would like to meet the sales agreement with the granary. However, the goal should be weighted according to the profit returned by each crop. a. Formulate a goal programming model to determine the number of acres of each crop the farmer should plant to satisfy the goals in the best possible way. b. Solve this model by using the computer.
> The Valley Swim Club has 300 stockholders, each holding one share of stock in the club. A share of club stock allows the shareholder’s family to use the club’s heated outdoor pool during the summer, upon payment of ann
> Mark Decker has identified four stocks for his portfolio, and he wants to determine the percent- age of his total available funds he should invest in each stock. The alternative stocks include an Internet company, a computer software company, a computer
> An investment adviser is helping a couple plan a retirement portfolio. The adviser has recommended three stocks—Allied Electronics, Bank United, and Consolidated Computers. Following are the annual return and variance for each stock and
> Graphically illustrate the profit curve developed in Problem 1. Indicate the optimal price and the maximum profit per month.
> Tech wants to locate the best site for a new student center and athletic complex. The university administration would like to know what the best location is relative to the four main concentrations of student housing and classroom activity on campus. The
> A company specializing in air conditioners wants to setup a distribution center in India. The company sells its products through six retail outlets located in the following cities in India: Chennai, Mumbai, Bangalore, New Delhi, Kolkata, and Vizag. The l
> A farmer prepares his land for plantation during the rainy season. He has right-angled triangle shaped land with length (b) and width (w). Since his land is close to a forest, forest animals some- times damage his crops. To ward off the animals, he plans
> The Metro Police Department has partitioned the city into four quadrants. The department has 20 police patrol cars available for each shift per day to assign to the quadrants. The department wants to assign patrol cars to the quadrants during a shift so
> A turbine is designed for generating electricity. During electricity generation, the turbine is subject to very high temperature. This high temperature and the speed of the turbine affects the sealing property. The turbine uses gasket and lubricating oil
> Metro Telcom Systems develops, sells, and installs computer systems. The company has divided its customer base into five regions, and it has 15 representatives who sell and install the company’s systems. The company wants to allocate sa
> Interpret the meaning of the Lagrange multiplier in Problem 12.
> American International Automotive Industries (AIAI) manufactures engine, transmission, and chassis parts for manufacturers and repair companies in the United States, South America, Canada, Mexico, Asia, and Europe. The company transports parts to its for
> The Riverwood Paneling Company makes two kinds of wood paneling: Colonial and Western. The company has developed the following nonlinear programming model to determine the optimal number of sheets of Colonial paneling (x1) and Western paneling (x2) to pr
> In the investment portfolio selection model in this chapter, what if Jessica Todd decided that she wanted to maximize her return while incurring a portfolio variance of no more than 0.020? Analyze this scenario by using the Excel spreadsheet in Exhibit 1
> The Rolling Creek Textile Mill produces denim and brushed cotton cloth. The company has developed the following nonlinear programming model to determine the optimal number of yards of denim (x1) and brushed cotton (x2) to produce each day to maximize pro
> The Hickory Cabinet and Furniture Company makes chairs. The fixed cost per month of making chairs is $7,500, and the variable cost per chair is $40. Price is related to demand, according to the following linear equation: v = 400 - 1.2 p Develop the nonli
> Solve the following goal programming model by using the computer:
> Solve the following goal programming model graphically and by using the computer:
> Solve the following goal programming model graphically and by using the computer:
> Select four fast-food restaurants (e.g., McDonald’s, Burger King, Wendy’s, Domino’s, or local restaurants) in your area, and develop a scoring model that includes decision criteria, weights, and grades to rank the restaurants from best to worst.
> Suntrek manufactures denim jeans, which it sells to clothing retailers around the world. It wants to construct a new warehouse and distribution center in Asia to serve emerging markets there. It has identified potential sites in the port cities of Shangh
> As part of an aggressive expansion plan, StarTrack Coffee is planning to open three new retail stores in the city. The following table shows the location factors it considers to be important indicators of future profitability and how management has grade
> State University has increased its tuition for in-state and out-of-state students in each of the past 5 years to offset cuts in its budget allocation from the state legislature. The university administration always thought that the number of applications
> A study conducted on four brands of computers resulted in the following comparison matrix. The factors considered are the speed of processing (1), storage capacity (2), after sales service (3), and cost (4). a. Determine the priorities for the considered
> Robin Dillon has recently accepted a new job in the Washington, DC, area and has been hunting for a condominium to purchase. From friends and coworkers she has compiled a list of five possible condominium complexes that she might move into. The following
> The Barrett Textile Mill was checked by inspectors enforcing Occupational Safety and Health Administration (OSHA) codes. The inspectors found violations in four categories: hazardous materials, fire protection, hand-powered tools, and machine guarding. I
> The Carter family wants to purchase a time-share condominium for 1 week during the summer in Hilton Head, South Carolina. There are many resort complexes from which to choose, and the Carters have narrowed their list to five. They have graded their choic
> Following an all-star school soccer career, Kelly Williams has been offered scholarships to five universities. She has had a difficult time making a decision and has decided to use a scoring model to help evaluate the different offers. The following tabl
> State University is to construct a new student center and athletic complex that will include a bookstore, a post office, theaters, a market, a minimall, meeting rooms, a swimming pool, and weight and exercise rooms. The university administration has hire
> In Problem 38 Ben Cheery, the Sox general manager, also wants to use a scoring model to deter- mine which player(s) he might sign to a free agent contract for the coming baseball season. The following table shows a weighted list of criteria he has develo
> The Dynaco Manufacturing Company is to build a new plant to make ring bearings (used in automobiles and trucks). The site selection team is evaluating three sites, and it has graded the important weighted criteria for each as follows: Develop a scoring m
> Arsenal Electronics is to construct a new $1.2 billion semiconductor plant and has selected four small towns in the Midwest as potential sites. The important decision criteria and grades for each town are as follows: Develop a scoring model to determine
> Select four new models of cars you might like to purchase. Using AHP and your own preferences, rank your selections according to the following criteria: price, style/appearance, reliability/ maintenance, engine size, gas mileage, safety, and features/opt
> Suntrek is a global denim fabric and jeans manufacturer. It purchases raw, baled cotton from locations around the world (primarily the United States and Mexico) and ships it (in containers) to various factories it operates to manufacture denim fabric and
> Check the pairwise comparison in Problem 48 for consistency.
> Balston Healthcare operates three hospitals and a number of clinics in its citywide network. It is planning to open a new wellness center and clinic facility that focuses on geriatric clients in one of four suburbs. The following table shows the weighted
> For Problem 49, check the consistency of the pairwise comparison matrices for all four criteria and the criteria.
> The Growall Fertilizer Company produces three types of fertilizer—Supergro, Dynaplant, and Soilsaver. The company has the capacity to produce a maximum of 2,000 tons of fertilizer in a week. It costs $800 to produce a ton of Supergro, $1,500 for Dynaplan
> Labran Jones has played for the Cleveland professional basketball team for the past eight seasons and has established himself as one of the top players in the league. He has recently become a free agent, meaning he can sign a new contract with Cleveland
> A state university interviewed three candidates (A, B, C) for a faculty position in the department of decision sciences. The university selects the best candidate based on education (Ed), experience (Ex), and references (Re). The search committee has pre
> Check the pairwise comparison in Problem 46 for consistency.
> An undergraduate student of decision sciences wants to buy a mobile. He mainly focuses on three criteria: cost, battery life, and features. He has finalized three models of phones (M1, M2, and M3). Using his knowledge of AHP, he has created pairwise comp
> For Problem 44, develop your own pairwise comparisons for and among the criteria using your own knowledge of Civil War history and any Internet research you might perform, and develop your own AHP ranking of the four generals.
> The four most famous generals during the American Civil War were Ulysses S. Grant, William Tecumseh Sherman, Robert E. Lee, and Stonewall Jackson. Historians have always debated who the greatest general from among these four was. Following are the pairwi
> Each November the Baseball Writers’ Association of America (BBWAA) releases its list of that year’s nominees for induction into the National Baseball Hall of Fame in Cooperstown, New York. There are 575 voting members of the BBWAA, and candidates must be
> A European oil exploration company wants to relocate its design center to the UAE as part of company’s consolidation strategy. The following pairwise matrix was developed to evaluate the preference. a. Determine the priorities for the t
> A faculty committee in the department of Business Analytics at Tech is evaluating three new text- books for its introductory management science course, which all business students are required to take. The texts, identified by the authors, are Adams/Jone
> The department of management science at Tech offers four sections of introductory quantitative methods in the fall semester, each taught by a different teacher. A group of students have developed the following criteria to rank the sections: time and day,
> For Problem 19, develop your own pairwise comparisons for the criteria you might use to select an apartment complex or other dwelling in your college community, and develop your own AHP ranking for the possible apartment complexes you might live in.
> In Problem 38 check the general manager’s pairwise comparisons for consistency.
> Ben Cheery, the Sox general manager, wants to sign at least one free agent player for the coming baseball season. He is considering four players—Joe Aaron, Mike Bass, Carlos Cabrera, and Josh Donald. He is using three criteria including
> Suntrek, based in China, is a global supplier of denim jeans for apparel companies around the world. It purchases baled raw cotton from producers in the United States and then transports it to East Coast ports, where it is loaded into containers and ship
> Federated Health Care has contracted to be Tech’s primary health care provider for faculty and staff. There are three major hospitals in the area (within 35 miles)—County, Memorial, and General—that h
> Given the following pairwise comparisons, indicate your preferences according to the preference scale in Table 9.1. a. Steak to chicken b. Hot dogs to hamburgers c. Republicans to Democrats d. Soccer to football e. College basketball to professional bask
> Katherine Miller is a senior in the department of informa- tion technology at Tech. For the past few months she has been involved in the job search process. She has an excellent résumé, with a high grade point average and a strong record of campus partic
> The town of Blacksburg needs a larger modern middle school. The current middle school is in the center of town and is over 40 years old. There are two proposals for a new school—renovate and expand the current facility and keep it in to
> General elections are due to be held in a country to constitute the next government. A voter who recently became eligible is anxious to vote for the first time. The voter evaluates the performance of three political parties on the criteria governance, em
> The management science and information technology majors at Tech select one of two available options within the major—decision support systems (DSS) or operations management (OM). Student advisers use AHP with the students to determine
> Check the pairwise comparison in Problem 30 for consistency.
> Pearson plans a surprise summer vacation gift to its employees. When the publisher revealed the idea, the excited employees explored three perfect destinations for their summer getaway: Isle of Skye, Scotland; Paris, France; and Bern, Switzerland. Employ
> The Bay City Parks and Recreation Department has received a federal grant of $600,000 to expand its public recreation facilities. City council representatives have demanded four different types of facilities—gymnasiums, athletic fields,
> The Bay City Parks and Recreation Department is considering building several new facilities, including a gym, an athletic field, a tennis pavilion, and a pool. It will base its decision on which facilities to build depending on projected usage (from surv
> Professor Rakes is selecting a new graduate assistant from a pool of second-year MBA students. He will make his selection based on the student’s grade point average (GPA) to date, the overall GMAT (entrance exam) score, and the undergra
> Rockingham Systems is considering three R&D projects it has identified as A, B, and C. Rockingham is not sure it will undertake all three projects, so it wants to rank them in terms of preferability. Rockingham will use three criteria to rank the pro
> Whitney Eggleston operates a computerized dating service for students at Tech. She uses AHP to help match her clients. Whitney is attempting to match Chris with Robin, Terry, or Kelly. She evaluates her clients according to three criteriaâ€
> Broderick Crawford is the district commander for the Catawba Valley highway patrol district in western Pennsylvania. He is attempting to assign highway patrol cars to different road segments in his district. The primary function of the highway patrol for
> The Pearlsburg (West Virginia) Rescue Squad serves a mountainous, rural area in southern West Virginia. The only access to the homes, farms, and small crossroad communities and villages is a network of dirt, gravel, and poorly paved roads. The rescue squ
> When should a single-alternative decision structure be used instead of a dual-alternative structure?
> The American Association for Retired Persons (AARP) mails out applications to people who are age 50 and older. How might you write a selection question to select all persons eligible for AARP?
> 1. When structures are attached to each other end to end, this is called ____. 2. When one structure is contained completely within another structure, this is called ____. 3. Another name for looping is ____.
> What are three structures of programming?
> 1. (True/False) Many approaches can be used to write and execute a computer program. 2. A(n) ____ is a program that you use to create simple text files. 3. The ____ is a location on your computer screen where you type text entries to communicate with the
> You have an outer for loop that will execute five times, with an inner for loop that will execute three times each time it is entered. How many times in total will the inner for loop execute?
> 1. A report that contains only totals and other overall statistical information is called a(n) _____ report. 2. A variable that is used to hold a running total is called a(n) ___________ variable.
> What are some other names for modules?
> 1. Declaring a starting value is known as ____ the variable. 2. A variable’s unknown value is commonly called ____. 3. (True/False) Variable names should have some appropriate meaning. 4. A(n) ____ variable can hold text, such as letters of the alphabet,
> What purpose does a sentinel value have?
> 1. A symbol shaped like a(n) ___________ represents a decision in a flowchart. 2. A loop that runs forever is called a(n) ______________ loop. 3. A code stored in a file that marks the end of the data is called a(n) ____ marker.
> 1. A(n) ____ anomaly is a problem that occurs when the data in a table needs to be altered. 2. A table that contains repeating groups is ____. 3. A(n) ____ dependency occurs when the value of a nonkey attribute determines, or predicts, the value of anoth
> 1. You represent a(n) ____ relationship between classes with a straight line. 2. ____ diagrams are similar to class diagrams, but they model specific instances of classes. 3. You use a(n) ____ diagram to illustrate aspects of a system that show interesti
> 1. A(n) ____ represents a picture or sketch of a screen the user will see when running a program. 2. A(n) ____ diagram shows the relationship between screens in an interactive GUI program. 3. A(n) ____ is the flow of execution of one set of program state
> 1. ____ are collections of classes that serve related purposes. 2. In programming languages that supply existing ____ classes, you are often provided with a visual development environment in which you can create programs by dragging components such as bu
> 1. Object-oriented programmers usually specify that their data fields will have ____ access—that is, the data cannot be accessed by any method that is not part of the class. 2. An access ____ is the adjective defining the type of access (public or privat
> 1. (True/False) When you pass an array element to a method, any changes to it are not permanent and are not reflected in the array declared in the main program. 2. Arrays, unlike simple built-in types, are passed by ____. 3. When you overload a method, y
> 1. An array whose elements you can access using a single subscript is a(n) ____dimensional array. 2. (True/False) You access a two-dimensional array value using two subscripts, in which the first subscript represents the column and the second one represe
> 1. A(n) ____ file is a file in which records are stored one after another in some order. 2. In a(n) ____ program, as you read records, you examine the same field in each record; and when you encounter a record that contains a different value from the one
> A computer program must be free of ____ errors before you can execute it.
> 1. The first element in an array has a subscript of ____. 2. The last element in an array has a subscript of ____.
> How are the items in two parallel arrays related?
> What programming construct should be used to search through an array for a matching item?
> In a for loop, is the condition tested before or after the loop body is executed?
> If the loop control variable is not initialized, what may happen?
> If the loop control variable is not altered within the loop, what will happen?
> When AND and OR operators are combined in the same statement, which has precedence?
> 1. In an OR decision, you should first ask the question that is ____ (more/less) likely to be true. 2. In an AND decision, you should first ask the question that is ____ (more/less) likely to be true.
> Which logical operator requires that both conditions be true to produce a true result?
> Which logical operator requires that only one condition be true to produce a true result?
> What is the most important phase in creating a program to solve a problem?
> List the reasons for using the three structures discussed in the chapter.
> 1. A(n) ____ is an added statement that gets the first input value in a program. 2. (True/False) When you are beginning to learn about structured program design, it is easy to detect whether a flowchart of a program’s logic is structured. 3. (True/False)
