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2769 items in total found

Working Papers | 2002

Obtaining Near OptimalSolutions for the Binary Knapsack Problem

Diptesh Ghosh and Boris Goldengorin

In this paper we consider the well-known binary knapsack problem. We propose a method of embedding heuristicsi in a branch and bound framework to optain solutions with profits within a pre-specified quality parameter within very short times. Our computational experiements on the more deficult problems show that algorithm can genrate solutions with profits within 0.01% of that of an optimal solution in less than 10% of the time required by exact algorithms based on similar priciples.

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Working Papers | 2002

Air-Cooling and Heating Systemfor Tiger in Zoo using Earth Tube Heat Exchanger

Girja Sharan, Sahu R K, and Jadhav Ratan

A specially designed air-cooling (and heating) system using Earth Tube Heat Exchanger (ETHE) was installed in the dwelling of a 15-year old white tiger (Panthera tigris) named Mahesh at Kamala Nehru Zoological Garden, Ahmedabad (India) in October 2000. This was done to alleviate the stresses experienced by Mahesh in summer, which is long and hot; and in winter nights, which can be quite cold. Summer temperatures in Ahmedabad remain around 40oC for a long time and can reach as high as 45oC. Night temperatures in winter can drop to 10oC or below. The system does both--provide cooling in summer and warming in winter. In winter the system warms up the ambient (cold) air by as much as 10oC at night. In summer the system cools the ambient (hot) air also by as much as 8 - 10oC during the day.

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Working Papers | 2002

Knowledge Flows and IndustrialClusters: An Analytical Review of Literature

Rakesh Basant

The dynamism and persistence of competitiveness among industrial clusters, even in the wake of globalization and liberalization in the 1990s, has led researchers to explore the causes of dynamic efficiencies at the cluster level. Cluster studies in the 1980s focused on static advantages of clustering that essentially emerge from lower transaction costs, vertical disintegration of production, availability of skilled manpower and inter-firm interaction. Recent studies have focused on dynamic efficiencies that emanate from learning at the cluster level. The "knowledge focus" of cluster studies is of recent origin and we know very little about the nature of knowledge flows and their determinants. This paper reviews the available literature to identify key processes at work and the gaps in the understanding of these processes. It is suggested that the nature and quantum of knowledge flows in a cluster would depend upon its (a) internal characteristics, (b) external linkages and (c) external policy and economic environment. Using available studies, the paper highlights the role of these characteristics in the generation and flows of knowledge within the cluster. Many of the relationships are still being explored and no consensus has emerged. Future efforts at analyzing these issues will need to systematically capture the knowledge embodied in products, processes and practices and the variety of sources that contribute to the development and diffusion of this knowledge. Apart from other issues, a research focus on the role of "external" linkages of a cluster in knowledge flows will be extremely useful and should be accorded top priority. In the process, the linkages between "internal" and "external" sources of knowledge should also be systematically analyzed. Some methodological issues that will need to be addressed while pursuing research in this direction are identified.

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Working Papers | 2002

Recent Developments inMacroeconomics

Gupta G S

The paper presents the subject matter of macroeconomics and the developments that have taken place in macroeconomic theory and policy since the Keynesian theory of 1936. In particular, it highlights the problems in data measurement, describes the business cycles and the roles of stabilisation policies in countering them, and delineates the factors determining economic growth.

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Working Papers | 2002

Lay-offs in the Blended Economy

Singh J P

Recent reports suggest that the Government of India is favourably inclined to change policy and enable establishments employing less than 1,000 workers to lay-off employees and undertake retrenchments or closures without prior permission. Corporate lay-offs in the U.S. indicate an ever-increasing trend and do not make a comforting reading. The year 2001 for example, saw the highest number of job cuts in the Fortune 500 companies than in any year ever since the survey of lay-offs were launched. Japan, despite its tradition of high employee concern, seems also to be overwhelmed with this new trend at least in the I.T. industry. In India, it appears that pressure is building up to similarly allow this enabling facility to all corporations. Prima facie, it appears as if the business is moving towards a state where manpower in an organisation is kept eternally in the transient state. In the process not only ensuring short-term profits but also as a way out of the long-term social security and welfare benefits obligations towards the employees. The paper examines the impact of lay-off and suggests that while individual impact is important in its own right, the research suggests that the effects of lay-offs go well-beyond the physical, material and psychological state of the individual to the organisation, community and the nation. Literature review suggests that several alternatives to lay-offs are available and examples of implementing these alternative solutions are available around the world. The literature also negates the general view that the unions will not cooperate in finding solutions. Example in industry clearly show that unions and workers are not only willing to cooperate but even show new ways of coping with the business problems to avoid lay-offs. The paper examines various reasons proffered in favour of lay-offs and argues that they are not necessarily a good option for an enterprise faced with business fluctuations. The crux of the issue is as to what is more important: the short-term gains in the stock market or the longer term financial health and stability of an enterprise. The paper suggests that a clear, agreed, rational policy that addresses concerns of management, labour and the general society be developed to address the issue.

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Working Papers | 2002

Neighborhood Search Heuristicsfor the Uncapacitated Facility Location Problem

Diptesh Ghosh

The uncapacitated facility location problem is one of choosing sites among a set of candidates in which facilities can be located, so that the demands of a given set of clients are satisfied at minimum costs. Applications of neighborhood search methods to this problem have not been reported in the literature. In this paper we first describe and compare several neighborhood structures used by local search to solve this problem. We then describe neighborhood search heuristics based on tabu search and complete local search with memory to solve large instances of the uncapacitated facility location problem. Our computational experiments show that on medium sized problem instances, both these heuristics return solutions with costs within 0.075% of the optimal with execution times that are often several orders of magnitude less than those required by exact algorithms. On large sized instances, the heuristics generate low cost solutions quite fast, and terminate with solutions whose costs are within 0.0345% of each other.

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Working Papers | 2001

Women in Management Challenges and Opportunities

Parikh Indira J

Women roles and so also men roles exist in the context of a society and culture, which allocates and defines roles for both. Society and culture provide myths and epics depicting the journey of a hero as he unfolds his life to seek the answers to the questions of who am I and what is the purpose of life. However, there are no epics or myths where women take a journey and an adventure to unfold their lives to discover who they are. Their stories and their life are always around relationships, search for meanings in relationships and sacrifice or investment in relationships. The women have lived contained within a narrow space, shrunken roles and frozen initiatives. After centuries of agrarian living technological revolution and industrialization opened the minds of women shattering the myths that they need to walk a few steps behind. Women journeyed into educational fields and then organizations and work outside home. This journey was undertaken in four stages over five decades. In this time women have found answers to questions about their identity. It is now time for all womankind it is their role to build a new heritage, new role models and give shape to the destiny of the girl child of tomorrow and in the centuries to come.

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Working Papers | 2001

Transformation of Organizations Through Enhancing Free Energy of Individulas, Collectivity and the Organization

Parikh Indira J

Organization identity is shaped by multiple factors. This shaping leads to transformation of the organization. An organization transforms its own identity with the help of free energy. It can also mobilize captive or frozen intrinsic energy into free energy. Each of these energies is driven by either internal or external factors and has its own effect that decides how the organization transforms itself. Indian organizations can also transform themselves in an effective manner through organizational leadership. The strength of the leadership and its understanding of the internal and external driving forces will determine how the organization transforms itself. For an organization to transform, the leader must first identify the free, captive and frozen energy within himself, collectivity and the organization and do what is necessary to make these available to the organization for transformation. The paper deals with how the organization can enhance and channelise its free energy, alertness and aliveness to fulfill the vision, goals and objectives of the organization.

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Working Papers | 2001

A Comparison of Technical Efficiency in the Public and Private Sectors in India

T. T. Ram Mohan

Working Papers | 2001

How does it matter to be owned by Government? Rejuvenation of a Government owned Automobile Company in India

Sunil Kumar Maheshwari

Scooters India Ltd. (SIL), a Public Sector Enterprise (PSE), was among the top 10 loss-making companies in India in 1989-90. It was setup in 1972 and continued to report losses till 1995-96. It carried a negative net-worth of Rs. 6.47 billion in 1995-96. The company was rejuvenated and has been reporting profits since then. The case study provides a rich insight into the implications of government ownership in PSEs that makes them sink or swim. Governments undertake two roles relating to business environment. First, they frame rules, procedures and policies to regulate the business environment. Second, they invest resources in PSEs for political, ideological, social, and economic reasons. However, in the last few years the existence of PSEs has been subjected to strong criticism throughout the world. Governments are frequently seen privatizing PSEs both in the developing and developed countries. However, trade unions and employees of these PSEs agitate against privatization. They argue that the change of ownership does not necessarily improve financial performance. Further, financial losses are widely reported by both-PSEs and private owned organizations. Board for Industrial and Financial Reconstruction (BIFR), an agency which is responsible to approve revival plans for sick enterprises in India, had 3296 registered cases of sick companies at the end of financial year 2000-2001. Out of them 3121 companies were private owned organizations. Under such conditions it is important to examine the process of governments influence on performance decline and rejuvenation of PSEs. This paper examines "How does government ownership influences the management processes that lead to decline and rejuvenation of organizations?" The paper examines empirically the implications of government ownership to the internal management and performance of PSEs. Findings : Following are the key findings from the case/s. 1. Manpower planning in initial stages was inadequate and was influenced by considerations which were beyond business imperatives. 2. CEOs who came to PSEs on deputation undertook ambitious, though risky, plans in initial stages of the company. 3. The top management consisting of officers on deputation from other departments in high munificence environment was inward looking. Such management team was driven by rules and procedures. The team had low concern for customer and quality. 4. Company had high propensity for innovations both under adverse and favourable conditions. However, the concern for commercial exploitation of these innovations was inadequate. 5. Employees perceived higher job security in protected economy. This perceived high job security in led to higher unionization propensity. Trade unions and employees were active in the management of work place till mid 1990s. 6. Strategic decisions about staffing at the top level were influenced by political considerations. 7. CEOs who come for fixed tenure on deputation had inadequate concern about the strategic direction of the company. 8. Cost of transaction with external stakeholders increased under declining conditions. Performance decline led to low morale among employees and yielding management. 9. Company lost business opportunities owing to different priorities of decision-makers. 10. CEOs who join declined company on deputation were unwilling to undertake straining activities to rejuvenate the organization. 11. Reverence, faith, confidence and willingness to sacrifice by the leader helped the company to rejuvenate. 12. Once initiated, the rejuvenation process was fast in the company.

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IIMA