mb0048 smu mba Spring 2015 IInd sem assignment

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DRIVE- Spring 2015

PROGRAM-MBADS / MBAN2 / MBAHCSN3 / PGDBAN2 / MBAFLEX

SEMESTER- II

SUBJECT CODE & NAME- MB0048 OPERATIONS RESEARCH

Q1. Discuss the methodology of Operations Research. Explain in brief the phases of Operations Research. (Meaning of Operations Research, Methodology of Operations Research, Phases of Operations Research) 2,4,4

Answer:

Definitions of operations research

Churchman, Aackoff, and Aruoff defined operations research as “the application of scientific methods, techniques and tools to the operation of a system with optimum solutions to the problems” where 'optimum' refers to the best possible alternative.

Q2. a. Explain the graphical method of solving Linear Programming Problem.

b. A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper in a week. There are 160 production hours in a week. It requires 0.20 and 0.40 hours to produce a ton of grade X and Y papers. The mill earns a profit of Rs. 200 and Rs. 500 per ton of grade X and Y paper respectively. Formulate this as a Linear Programming Problem.

Answer:

a.       

Graphical Methods to Solve LPP

While obtaining the optimal solution to an LPP by the graphical method, the

statement of the following theorems of linear programming is used:

·         The collection of all feasible solutions to an LPP constitutes a convex set whose extreme points correspond to the basic

Q3. a. Explain how to solve the degeneracy in transportation problems.

b. Explain the procedure of MODI method of finding solution through optimality test.

(a. Degeneracy in transportation problem, b. Procedure of MODI method ) 5, 5

Answer:

a. Degeneracy in transportation problem

A basic solution to an m-origin, n destination transportation problem can have at the most m+n-1 positive basic variables (non-zero), otherwise the basic solution degenerates. It follows that whenever the number of basic cells is less than m + n – 1, the transportation problem is a degenerate one. The degeneracy can develop in two ways:

Q4.

a. Explain the steps involved in Hungarian method of solving Assignment problems.

b. Find an optimal solution to an assignment problem with the following cost matrix:

Answer.

a.)

Hungarian Method Algorithm

Hungarian method algorithm is based on the concept of opportunity cost and is more efficient in solving assignment problems. The following steps are adopted to solve an AP using the Hungarian method algorithm.

Step 1: Prepare row ruled matrix by selecting the minimum values for each row and subtract it from the

Q5.  A) Explain Monte Carlo Simulations.

B) A Company produces 150 cars. But the production rate varies with the distribution.

Production rate	147	148	149	150	151	152	153
Probability	0.05	0.10	0.15	0.20	0.30	0.15	0.05

At present the track will hold 150 cars. Using the following random numbers determine the average number of cars waiting for shipment in the company and average number of empty space in the truck. Random Numbers 82, 54, 50, 96, 85, 34, 30, 02, 64, 47.

Answer: Monte Carlo simulations, a statistical technique used to model probabilistic (or “stochastic”) systems and establish the odds for a variety of outcomes. The concept was first popularized right after World War II, to study nuclear fission; mathematician Stanislaw Ulam coined the term in reference to an uncle who loved playing the odds at the Monte Carlo casino (then a world symbol of gambling, like Las

Q6.

a. Explain the dominance principle in game theory.

b. Describe the Constituents of a Queuing System.

c. Differentiate between PERT and CPM

a.

Dominance

In a rectangular game, the pay-off matrix of player A is pay-off in one specific row ( r row ) ^th exceeding the corresponding pay-off in another specific row( s row ) ^th . This means that whatever course of action is adopted by player B, for A, the course of action Ar yields greater gains than the course of action As .

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mb0047 smu mba Spring 2015 IInd sem assignment

Get fully solved assignment. Buy online from website

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DRIVE: SPRING DRIVE 2015

PROGRAM: MBA/ MBADS/ MBAFLEX/ MBAHCSN3/ PGDBAN2

SEMESTER: II

SUBJECT CODE & NAME: MB0047 – MANAGEMENT INFORMATION SYSTEMS

BK ID: B1968

CREDIT: 4

MARKS: 60

Q.1: In today’s life, Individuals rely on information systems, generally Internet-based, for conducting much of their personal lives: for socializing, study, shopping, banking, and entertainment. Information technology refers to anything related to computing technology, such as networking, hardware, software, the Internet, or the people that work with these technologies. How do you differentiate between information system and information technology? Explain using an example.

Differentiation between information system and information technology (7 MARKS)

Explaining with an example (3 MARKS)

ANS:

Differentiation between information system and information technology

Information systems are collections of computers, networks, software, and people who create, store, modify, and distribute data and information in any organisation. Computers and information

Q.2: Explain decision making with MIS using Travelling salesman problem

Meaning of decision making with MIS (4 MARKS)

Travelling Salesman problem (6 MARKS)

ANS:

Meaning of decision making with MIS:

1. Tactical decisions: An important task of all employees within the organisation is to make decisions about various things. At the lowest level of the organisation, the workers have to decide how to go about their work. Although their work is usually quite structured, they have to make choices and evaluate consequences, using the given details. For example, a sales person may have a

Q.3: How to use information system to support competitive strategy? Explain with an example for each strategy

5 strategy and its use of information system (7 MARKS)

Examples for each of the strategy (3 MARKS)

ANS:

5 strategy and its use of information system;

1. Create barriers to entry for competition: To create barriers to entry of new competition, fi rms may lock-in existing customers with loyalty programmes and freeaccess accounts created with information systems. Data from such loyalty programmes can also be used to identify customer

Q.4: Decision making is a daily activity for any human being. In the decision making process, we choose one course of action from a few possible alternatives. In the process of decision making, we may use many tools, techniques and perceptions. Describe Herbert Simon model on Decision making.

Herbert Simon model on decision making (10 MARKS)

ANS:

Herbert Simon model on decision making:

Herbert Simon, the Nobel Prize winning researcher, showed that humans went through three essential stages in the act of problem solving. He called these the Intelligence, Design, and Choice

Q.5: Write short notes on

a. Data administration (2 MARKS)

b. Managing concurrency (2 MARKS)

c. Reduced data redundancy (2 MARKS)

d. Recovery from crashes (2 MARKS)

e. Data access (2 MARKS)

ANS:

1. Data administration; Data administration entails deciding who can create, read, update, or delete data. Many organisations have strict controls over who can create or delete data fi elds or tables. This is determined by the needs of the organisation and the roles defined for database administrators and users. Read access is usually provided to those who need to only see and use the data, but not modify or change it in any way.Update access is also carefully restricted to those who

Q.6: Write short notes on

a. Role of workplace monitoring (5 MARKS)

b. Power over users (5 MARKS)

ANS:

a. Role of workplace monitoring:

Workplace monitoring has remained one of the most contentious and prevalent management practices. This practice is of maintaining a vigil on the workers’ activities in an organisation, particularly in a commercial fi rm, with the objective of ensuring higher productivity. When the

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