Towards a complete real-time electricity market design

The general design for the real-time electricity market presented in this paper optimizes and prices both real and reactive power simultaneously in an AC setting, where all assets—generation, load and transmission—are allowed to bid and are financially settled at the locational price times energy consumed or produced. The result is that transmission lines are compensated for both capacity and admittance, providing incentives for efficient operation of transmission-related assets such as FACTS devices, if price-taking behavior is assumed. Losses are incorporated into the design and become an operating cost for transmission. The market design is shown to be revenue neutral and, under some assumptions, nonconfiscatory.      

Book Reviews

Anthony J. Whitten, Sengli J. Damanik, Jazanul Anwar and Nazaruddin Hisyam, The Ecology of Sumatra, Yogyakarta: Gadjah Mada University Press, Second Edition, 1987, pp. 583 + xx.

Christine Drake, National Integration in Indonesia: Patterns and Policies, Honolulu: University of Hawaii Press, 1989, pp. 354 + xvi. Cloth: US$ 35.00.

Geoffrey B. Hainsworth (ed.), Environmental Linkages, Halifax: School for Resource and Environmental Studies, Dalhousie University, 1985, pp. 97.

R. Repetto et al., Wasting Assets: Natural Resources in the National Income Accounts, Washington DC: World Resources Institute, June 1989, pp. 69 + vi. Paper: US$10.00.

William E. James, Seiji Naya and Gerald M. Meier, Asian Development: Economic Success and Policy Lessons, Madison, Wisconsin: University of Wisconsin Press, 1989, pp. 281 + Xviii.

Robert B. Dickie and Thomas A. Layman, Foreign Investment and Government Policy in the Third World: Forging Common Interests in Indonesia and Beyond, London: MacMillan, 1988, pp. 240 + xxxi. £35.

Alan Gelb and Associates, Oil Windfalls: Blessing or Curse? New York: Oxford University Press, for the World Bank, 1988, pp. 357 + x. $32.50.

Benjamin Higgins, The Road Less Travelled: A Development Economist's Quest, History of Development Studies 2, Canberra: National Centre For Development Studies, the Australian National University, pp. 204 + x. Paper: A$20.00

BRIEFLY NOTED: Sarwar Hobohm, Indonesia to 1993: Breakthrough in the Balance, London: Economist Intelligence Unit, Special Report no. 2012, 1989, pp. 91, £190 for this Plus the Companion Report, Indonesia to 1991: Can Momentum be Regained?

Geoffrey Hainsworth and Hasan Poerbo (eds), Local Resource Management: Towards Sustainable Development, Halifax: School for Resource and Environmental Studies, Dalhousie University, 1987, pp. 69 + xii.

H.W. Dick, Industri Pelayaran Indonesia: Kompetisi dan Regulasi, Jakarta: LP3ES, 1990, 306 + xxv.     

Black americans and Ghanaians: Comparative patterns of internal migration

Conclusions For our purposes here, the analysis has been fruitful in that it has served to indicate and underscore in both general and specific terms the sources and determinants of migration movement and the destination of migrants. The qualitative analysis and the statistical test have led to several research conclusions. Both United States and Ghanaian migrants behave in accordance with the migration concepts examined. Common relationships between migration and economic opportunity are apparent. While push factors have generally initiated migratory movement among black Americans, particularly in respect to the South, both groups tend to move to regions with better economic opportunities. In both cases, migration is a negative function of distance, and a large labor force at the origin is a stimulus to out-migration at the origin.     

An African fertilizer crisis : Origin and economic effects in the Gambia

In 1985, fertilizer did not arrive in the Gambia in time for the cropping season, since a fertilizer grant was not being properly managed and coordinated. The costs of such policy failure are high. Fertilizer use was down by 64%. In this situation of scarcity, fertilizer use was even more skewed than before towards rich farmers. Output lost was about 10% of agriculture's GDP. Even in normal years in the Gambia, fertilizer use in millet and groundnuts is found far below optimal levels.     

Bimodal issues,the median voter model,Legislator's ideology,and abortion

The median voter model is widely used in the public choice literature to explain legislator's behavior. According to the model, if voter preferences are unimodal, a vote-maximizing legislator should mirror the position of the median voter. However, the median voter model has not been tested on bimodal issues. This paper fills this critical void by empirically testing the applicability of the median voter model on an issue which clearly meets the criteria for being bimodal: abortion. Using a variety of attitudinal measures from large sample public opinion polls and constituency demographics, this study finds that Senate voting on the 1994 Freedom of Abortion Access bill was highly related to the senator's personal characteristics—especially ideology—and not to constituent opinion or demographics.     

Changes in tourists’ perception of well-being based on their use of emotion regulation strategies during vacation

ABSTRACT

Based on the theoretical foundation of emotion regulation, this exploratory study aimed to examine changes in tourists’ perceived well-being and to determine whether these changes were due to use of emotion regulation strategies (ERSs) during their vacation. This study used travel diaries to record tourists’ use of ERSs on a daily basis, and also measured tourists’ perceived well-being one day before and after their vacation. Results indicated that tourists had significantly higher perceptions of well-being after vacation, and those who used ERSs were more likely to indicate a higher sense of well-being after vacation. The results provide new insight into which aspects of tourists’ subjective and psychological well-being can be boosted by taking vacations and how these aspects may be enhanced by using different ERSs.     

Information systems and technology sourcing strategies of e-Retailers for value chain enablement

In the e-Retail industry, a well-designed IT infrastructure is essential in creating a tightly integrated value chain and delivering high quality service. With intense competition for market share and profits, information systems and technology (IST) sourcing decisions are becoming increasingly important to e-Retail firms to support continued growth and market responsiveness. Drawing on the contingency theory, we examine organizational and environmental factors that influence an e-Retailer's IST sourcing strategy of make versus buy in enabling its value chain activities, and we also look at firm-level performance impacts of IST sourcing decisions that involve bundling across value chain activities. We test the proposed model and hypotheses using a panel data set of 307 firms over the period of 2006–2010. The results show that firms that make transformative IT investments tend to source a smaller portion of IST for their e-Retail value chain activities than firms that pursue automate or informate as their strategic role for IT investment. Capabilities are positively associated with IST sourcing. Firms experienced in e-Retail are more likely to build rather than buy their IST. In addition, we find mimicking behavior for IST sourcing among firms in the same merchandizer category. We find that IT strategic role is strongly associated with growth metric, whereas sourcing decisions predominantly impact operational performance measures. There is partial evidence that alignment between IT strategic role and IST sourcing decisions results in better performance effects. Moreover, complementary IST sourcing of synergistic marketing and sales activities positively impacts Web sales and conversion rate, but the sourcing combination of logistics, operations, and sales activities is associated with lower Web sales and conversion rate.     

Sacred alliance or pact with the devil? How and why social enterprises collaborate with mainstream businesses in the fair trade sector*

Abstract

This paper uses institutional theory to highlight different patterns of cross-sector collaboration from the perspective of social enterprises. Specifically, it explores how and why social enterprises interact with mainstream businesses and to what extent their collaboration patterns reflect a vision of how their social mission should be implemented and institutionalized. The empirical analysis is derived from a qualitative study of ‘fair trade’ – a hybrid model created by social enterprises and using market mechanisms to support small-scale producers in developing countries and to advocate for changes in international trading practices. The findings highlight three strategies used by fair trade social enterprises to manage their interactions with mainstream businesses: sector solidarity, selective engagement, and active appropriation. This paper suggests that each strategy is motivated by a different vision of how best to articulate the social mission of fair trade via specific types of collaborations. It also notes how each vision has a distinct pattern of institutionalization at the field level. This paper adds to the emergent literatures on social enterprise and social entrepreneurship, fair trade, cross-sector collaboration and hybrid organizing.     

Evolution of the study and practice of personality at work

This article reviews the dynamic evolution of personality research and practice in work organizations from the early 1900s through the present. The article reveals steady‐state equilibrium in the world of practice. In contrast, the world of research is shown to be punctuated by rapid changes in conceptual foci, levels of analysis, and methodological approaches, as well as whether or not personality at work is even considered important. Explanations are offered for these trends, including the ways theory and research in the larger world of the study of personality have been reflected in personality research in and on work organizations. The article concludes with some thoughts about revisiting various branches in this evolution and suggestions for the future of personality research and practice in work organizations. © 2007 Wiley Periodicals, Inc.