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1. |
Record Nr. |
UNINA9910453871803321 |
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Titolo |
The welfare impact of rural electrification [[electronic resource] ] : a reassessment of the costs and benefits ; an IEG impact evaluation / / World Bank Independent Evaluation Group |
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Pubbl/distr/stampa |
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Washington, : World Bank, 2008 |
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ISBN |
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1-281-78739-6 |
9786611787394 |
0-8213-7368-4 |
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Descrizione fisica |
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1 online resource (178 p.) |
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Disciplina |
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Soggetti |
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Rural electrification - Economic aspects - Developing countries |
Rural electrification - Social aspects - Developing countries |
Rural electrification - Developing countries |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references (p. 151-154). |
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Nota di contenuto |
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Contents; Abbreviations; Acknowledgments; Foreword; Executive Summary; Chairperson's Summary: Committee on Development Effectiveness (CODE); 1 Introduction; 2 World Bank Lending for Rural Electrification; Figure 2.1 A Growing Number of Rural Electrification Projects Are in Latin America and Sub-Saharan Africa; Figure 2.2 Increased Energy Supply and Institutional Development Account for the Largest Share of Objectives; Figure 2.3 Gender Issues Are Increasingly Taken into Account but Still Affect the Design of Only a Minority of Energy Projects; 3 Who Benefits from Rural Electrification? |
Figure 3.1 Pattern of Electrification Favors the Non-Poor, but This Bias Generally Reduces over Time as Electrification Coverage ExpandsFigure 3.2 Share of Poor of On-Grid Electricity Consumption Is Low; Box 3.1 Successful RE through a Multisectoral CDD Project; Box 3.2 Selection of Projects under the Peru Rural Electrification Project; Box 3.3 Chile Rural Electrification Fund; Figure 3.3 A Large Proportion of Households Connect to the Grid Immediately after It Becomes Available . . . But Some Remain Unconnected after Many Years |
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Table 3.1 Relative Price of Grid, Off-Grid, and Kerosene (/kWh) for Selected CountriesBox 3.4 India's Experience with the Single Point Light Connection Scheme: Kutir Jyoti; Box 3.5 Overcoming the Connection Cost Barrier; Box 3.6 Poor Communication of Tariff Structures Can Disadvantage the Poor; 4 What Is Electricity Used for in Rural Areas?; Figure 4.1 The Energy Ladder; Figure 4.2 Nearly All Projects Provide Residential Connections, but also Other Connections for Productive Purposes; Box 4.1 The Cold Chain; Figure 4.3 Pattern of Consumption in Rural Households (Distribution Total kWh) |
Box 4.2 Electrification and Worker Absenteeism in the Social Sector5 The Benefits of Rural Electrification; Box 5.1 Shedding Light on Lumens; Figure 5.1 Consumer Surplus; Figure 5.2 Producer Surplus; Table 5.1 Willingness to Pay Calculation for Lighting; Table 5.2 Willingness to Pay Calculation for TV; Box 5.2 The Health Risk of Candles; Table 5.3 Fertility Impact of Electrification; Table 5.4 Hours Watching TV by Electrification Status; Box 5.3 Micro Home Enterprises; Table 5.5 Rural Electrification Benefits (US per Household per Month); Figure 5.3 Willingness to Pay Exceeds Supply Cost |
Box 5.4 Technical Problems Reduce the Benefits from Off-Grid Investments6 Conclusion and Lessons Learned; Appendixes; Endnotes; Bibliography |
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Sommario/riassunto |
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Rural electrification can have many benefits-not only bringing lighting, but improving the quality of health care, spreading information and supporting productive enterprises. The extent of these benefits has been questioned, arguing that they may be insufficient to justify the investment costs. This book quantifies these benefits. It finds that the benefits can indeed be high, substantially outweighing the costs, and that consumer willingness to pay is generally sufficient to achieve financial sustainability. However, benefits could be increased further by providing smart subsidies to assist |
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2. |
Record Nr. |
UNINA9910135593503321 |
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Titolo |
Systems Engineering (ISSE), 2015 IEEE International Symposium on |
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Pubbl/distr/stampa |
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ISBN |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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3. |
Record Nr. |
UNINA9910781565703321 |
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Autore |
Cook William <1957-> |
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Titolo |
In pursuit of the traveling salesman [[electronic resource] ] : mathematics at the limits of computation / / William J. Cook |
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Pubbl/distr/stampa |
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Princeton, : Princeton University Press, 2012 |
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ISBN |
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1-283-33977-3 |
9786613339775 |
1-4008-3959-9 |
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Edizione |
[Course Book] |
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Descrizione fisica |
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1 online resource (245 p.) |
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Classificazione |
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Disciplina |
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Soggetti |
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Traveling salesman problem |
Computational complexity |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Front matter -- Contents -- Preface -- 1: Challenges -- 2: Origins of the Problem -- 3: The Salesman in Action -- 4: Searching for a Tour -- 5: Linear Programming -- 6: Cutting Planes -- 7: Branching -- 8: Big Computing -- 9: Complexity -- 10: The Human Touch -- 11: Aesthetics -- 12: Pushing the Limits -- Notes -- Bibliography -- Index |
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Sommario/riassunto |
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"What is the shortest possible route for a traveling salesman seeking to visit each city on a list exactly once and return to his city of origin? It sounds simple enough, yet the traveling salesman problem is one of |
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the most intensely studied puzzles in applied mathematics--and it has defied solution to this day. In this book, William Cook takes readers on a mathematical excursion, picking up the salesman's trail in the 1800s when Irish mathematician W. R. Hamilton first defined the problem, and venturing to the furthest limits of today's state-of-the-art attempts to solve it. Cook examines the origins and history of the salesman problem and explores its many important applications, from genome sequencing and designing computer processors to arranging music and hunting for planets. He looks at how computers stack up against the traveling salesman problem on a grand scale, and discusses how humans, unaided by computers, go about trying to solve the puzzle. Cook traces the salesman problem to the realms of neuroscience, psychology, and art, and he also challenges readers to tackle the problem themselves. The traveling salesman problem is--literally--a $1 million question. That's the prize the Clay Mathematics Institute is offering to anyone who can solve the problem or prove that it can't be done. In Pursuit of the Traveling Salesman travels to the very threshold of our understanding about the nature of complexity, and challenges you yourself to discover the solution to this captivating mathematical problem"-- |
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