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Working Papers | 2011

An Adaptive Probabilistic Model for Broadcasting
in Mobile Ad Hoc Networks

Kavitha Ranganathan

Ad hoc peer-to-peer mobile phone networks (phone MANETs) enable cheap village level telephony for cash-strapped, off-the-grid communities. Broadcasting is a fundamental operation in such manets and is used for route discovery. This paper proposed a new broadcast technique that is lightweight, efficient and incurs low latency. Using extensive simulations, we compare our proposed technique to existing lightweight protocols. The results show that our technique is successful in outperforming existing lightweight techniques on the criteria that are critical for a phone-MANET.

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Working Papers | 2011

A Conceptual Overview of Structural Equation Modeling

Tathagata Banerjee, Arindam Banerjee, and Erina Paul

A synthesized version of Structural Equation Modelling (SEM) and its possible applications in Management problems is presented. The main contribution of the paper is its simple description of a somewhat complex statistical process for the understanding of the beginners in this domain. It acts as a initial reading in SEM, before the researchers delve into more complex exposition of the statistical technique. The description is largely in English (not statistics) and is palatable to readers not trained enough in the domain of statistics.

It will serve as a good overview of this methodology for FPM students in business schools.

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Working Papers | 2011

Efficient Broadcasting for a Mobile Ad-hoc Network
based Peer-to-peer Community Radio Service

Kavitha Ranganathan

Ad-hoc networks consisting entirely of simple mobile phones can be used to deploy village level telephony. We investigate a novel application for such networks-a peer-to peer community radio service. We envision a system, where any user in the network is equally empowered to generate and distribute audio content to the entire network, using his or her mobile phone. This study concentrates on a critical aspect of this service-the choice of the network-wide broadcast protocol. Using extensive simulations, we evaluate the suitability of various broadcast techniques for a rural peer-to-peer mobile adhoc network. Our simulations identify the best choice of protocols under various village network conditions while simultaneously identifying limitations of the current protocols.

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Working Papers | 2011

The Single Row Facility Layout Problem: State of the Art

Ravi Kothari and Diptesh Ghosh

The single row facility layout problem (SRFLP) is a NP-hard problem concerned with the arrangement of facilities of given lenghs on a line so as to minimize the weighted sum of the distances between all the pairs of facilities. The SRFLP and its special cases often arise while modeling a large variety of applications. It was actively researched until the mid-nineties. It has again been actively studied since 2005. Interestingly, research on many aspects of this problem is still in the initial stages, and hence the SRFLP is an interesting problem to work on. In this paper, we review the literature on the SRFLP and comment on its relationship with other location problems. We then provide an overview of different formulations of the problem that appear in the literature. We provide exact and heuristic approaches that have been used to solve SRFLPs, and finally point out research gaps and promising directions for future research on this problem.

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Working Papers | 2011

Impact of Inter-organizational Relationships on Organizational Learning

Vijayta Doshi and Pradyumana Khokle

Literature on organizational learning has mainly focused on intra-organizational learning with little emphasis on inter-organizational learning. Organizations engage in strategic collaborations with other organizations. To realise the full potential of such relationships, it is very important for organizations to realise how learning may take place in such formal inter-organizational set-ups and understand various modes through which learning can be enhanced. This would foster their long term relationships. The paper explores how inter-organizational relationships foster organizational learning process through experiential and vicarious learning. The paper further explores various factors that impact the extent of learning in inter-organizational relationships.

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Working Papers | 2011

Managing Clinical Laboratories: Monitor and Control Lab Errors to improve Lab Performance

Poonam Trivedi, Nailesh Shah, and K. V. Ramani

Use of clinical laboratory test results in diagnostic deci¬sion making has become an integral part of clinical medicine. More than 60-70% of the most important decisions on admission, discharge, and medication are based on laboratory test results. With this high degree of influence, the reliability of laboratory testing and reporting is of utmost importance. Even though automation, standardization and technological advances have significantly improved the analytical reliability of laboratory tests, lab errors still do occur in the pre-analytical, analytical and post-analytical processes of the total testing process. It is the responsibility of the lab manager to minimize lab errors occurring at any stage of the testing process. Lab errors lead to sample rejection which in turn calls for repeat sample collection and analysis, and thereby cause delays in reporting the test results. Any delay in test results could have adverse consequences on the patients' health. Monitoring and control of lab errors is therefore an important challenge in the management of clinical labs so as to produce reliable test results as soon as possible and thereby achieve better lab performance.

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Working Papers | 2011

India's Agricultural Development under the New Economic Regime: Policy Perspective and Strategy for the 12th Five Year Plan

Vijay Paul Sharma

During the last two decades Indian agriculture has been facing major challenges like deceleration in growth rate, inter-sectoral and inter-regional equity, declining input efficiency, degradation of natural resources, etc. with consequent adverse effects on food and nutritional security, food inflation and poverty reduction. However, the 11th Plan had some success in reversing the deceleration of agricultural growth witnessed during the 9th and 10th Plan but food inflation still remains a major concern. The growth in agriculture in the 11th Plan is likely to be around 3.2 percent per year, which is higher than 10th Plan growth rate but lower than the target (4.0%) for 11th Plan. The 12th Plan growth target for agriculture sector has been set at 4 percent with foodgrains growth at about 2 percent and non-foodgrains sector (horticulture, livestock and fisheries) growing at about 5-6 percent. However, looking at the growth in agriculture sector in general and high-value agriculture, particularly, horticulture, fisheries, dairy and meat sector during the 11th Plan, there is a need to put additional efforts to achieve 4 percent growth in agriculture.

The failure to achieve targeted growth in agriculture has resulted from the inadequacies of the provision of the critical public goods such as research and development, extension services, surface irrigation, rural infrastructure, etc. on which agricultural growth thrives as well as inappropriate policies. In order to achieve the targeted growth in 12th Plan, we need to address some of these inadequacies. The sector would require substantial increase in investment both by public and private sector in agriculture research and development including extension, rural infrastructure, post-harvest and market infrastructure including storage and processing, reforms in laws related to land markets and marketing of agricultural products, and appropriate price policy. The pricing of agricultural inputs such as irrigation, electricity for pumping water, fertilizer, etc. needs rationalization. The distributional aspects of agricultural credit including inter-regional and inter-class inequalities in access to credit, decline in rural branches, declining share of direct credit, etc. must be addressed. People's participation, which will help in promoting the bottom up approach of planning process and also help in faster diffusion of the technologies and best practices among farmers, community based actions and participation of disadvantaged sections of the society in developmental process, needs to be strengthened.

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Working Papers | 2011

Macro-Economic Policy Outcomes and Agriculture Relation between Fiscal Deficits and Investment in Agriculture

Munish Alagh

In an earlier paper (Alagh, Munish, 2011) it was shown that macro economics matters in agriculture. The relevance of understanding the impact of macro-economic policy on agriculture was outlined, A forecasting exercise detailed the structure and response of supply to prices in the non foodgrain sector of the economy. The market and more generally macroeconomic policy impacts on agriculture needed to be understood. This is reviewed in this paper and it proceeds onwards from there to show that within macroeconomic policy specific policies such as an appropriate fiscal-monetary policy mix is relevant for the economy, and that fiscal policy should be seen as a process. It is shown that fiscal overspending outside agriculture should be curbed. The composition of fiscal policy relating to agriculture particularly public investment and subsidies is studied. It is seen that periods of sustainable deficits are periods of rising public investment in agriculture. ICOR's are rising but less in the public sector suggesting externalities. Crowding in of private investment seems likely. Following this the political economy of fiscal policy in agriculture is briefly reviewed.

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Working Papers | 2011

Dorm Spaces and Sociability

Arvind Shatdal

Physical spaces may significantly shape social interaction. This study has explored how the residential provisions (Dormitories) for students at IIM-Ahmedabad impact their social life. This paper adopted interpretive methods in order to explore the impact of physical space on sociability of students. Data was collected with the help of interviews and observations in order to explore and uncover the collective meaning imparted by the participants of research in understanding the impact of built spaces on sociability for the old campus and new campus dormitory residents of IIMA. Three narratives emerged from the collected data. First narrative focused on life in the dorm, second narrative focused on artifacts and how they influence the interaction among the students, and third narrative was built around the events in the dorm. Interpretive methods helped in drawing out participants' meanings related to spaces of the old and new campus dormitories and their impact on sociability. The study explored the lifeworld of dorm residents within these spaces. The study finds that built space and the organization of artifacts in that space do make a significant difference in social life of the dorm residents of IIMA.

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Working Papers | 2011

Comparison of Privatization Processes of Telecom Services in India and Brazil

Rekha Jain

Apart from being BRIC countries, what India and Brazil have in common is a large service sector that contributes significantly to the GDP. The service sector contributed 66% to the Brazilian GDP and 59% to the Indian GDP in 2010. Telecommunication services are a significant part of it in both the countries. This paper compares the regulatory processes of privatization of telecom services in these countries and the consequences of these on the telecom firms broadly and on the sector as a whole. Indian companies, facing harsh competition and having refined their business models to compete in this environment acquired the necessary expertise to foray abroad, opportunistically building their businesses. The highly competitive regulatory policies in India, led to the emergence of innovative business models and creation of large domestic companies both in services and infrastructure segment and consequently acquiring the necessary expertise to foray abroad. Brazilian regulatory policies focused on financially sound business and were open to investment by operators in other countries. Facing difficult domestic situation, the operators from Europe saw the Brazilian market as a growth opportunity.

The paper concludes that although both in Brazil and India, the objective of the telecom regulatory policies was to bring in privatization and competition, the variations in models followed by the two countries had led to sectoral outcomes that are very different. Brazilian telecom sector had shown higher penetration, both for telecom services in general and broadband in particular but domestic companies, other than one, which too was recently partially acquired by Portugal Telecom, have not emerged. Phased and controlled FDI in India combined with the hyper competitive scenario has led to the emergence of Indian telecom firms that have become significant global players.

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