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Distribution Factors (distribution + factor)

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Business, Economics, Finance and Accounting	50%

Selected Abstracts

Does increase in women's income relative to men's income increase food calorie intake in poor households?

AGRICULTURAL ECONOMICS, Issue 3-4 2010
Evidence from Nigeria
Nigeria; Intrahousehold redistribution of income; Women's income share elasticity; Calorie consumption Abstract This article addresses the important but not widely investigated question of how calorie consumption in African low-income households would respond to intrahousehold redistribution of income from men to women. Specifically, I use survey data on a sample of 480 households from semirural areas of south-western Nigeria to analyze the response of per capita calorie intake to changes in women's share of household income, after controlling for per capita income and demographic characteristics at individual, household, and community levels. I also examine the effect of marginal increases in household income on per capita calorie intake conditional on the income distribution factor: women's share of income. My results suggest that redistributing household income from men to women would neither raise per capita food energy intake nor increase the quality of food calorie source of households in rural south-western Nigeria. I also find that while the income elasticity of quantity of calorie intake is close to zero, income elasticity for quality of calorie intake is substantially positive. I conclude that neither gender-neutral household income increases nor redistribution of household income in favor of women would substantially motivate increased amounts of food energy intake within households in the population under study. However, gender neutral increase in household income is likely to substantially increase the household demand for high-quality food calorie sources. [source]

MOMENTUM: DOES THE DATABASE MAKE A DIFFERENCE?

THE JOURNAL OF FINANCIAL RESEARCH, Issue 4 2006
Bidisha Chakrabarty
Abstract We examine discrepancies between the Center for Research in Security Prices (CRSP) and Trade and Quote (TAQ) databases by examining the returns of momentum strategies using each database. Momentum portfolios constructed from CRSP prices earn significant profits whereas similar portfolios using TAQ prices show losses. Adjusting TAQ prices with the TAQ dividends file or with the cumulative distribution factor provided by CRSP does not eliminate all differences. There are significant discrepancies in the way CRSP and TAQ record newly listed and delisted stocks. We document the residual (after all filters) price differences between the two databases and provide filters to adjust TAQ data for long sample periods and large sample sizes. Our filtering procedures allow for the possibility of examining intraday patterns in momentum profits. [source]

Mass car ownership in the emerging market giants

ECONOMIC POLICY, Issue 54 2008
Marcos Chamon
SUMMARY Cars The typical urban household in China owns a TV, a refrigerator, a washing machine, and a computer, but does not yet own a car. In this paper, we draw on data for a panel of countries and detailed household level surveys for the largest emerging markets to document a remarkably stable relationship between GDP per capita and car ownership, highlighting the importance of within-country income distribution factors: we find that car ownership is low up to per capita incomes of about US$5000 and then takes off very rapidly. Several emerging markets, including India and China, the most populous countries in the world, are currently at the stage of development when such takeoff is expected to take place. We project that the number of cars will increase by 2.3 billion between 2005 and 2050, with an increase by 1.9 billion in emerging market and developing countries. We outline a number of possible policy options to deal with the implications for the countries affected and the world as a whole. , Marcos Chamon, Paolo Mauro and Yohei Okawa [source]

An efficient methodology for security assessment of power systems based on distributed optimal power flow

EUROPEAN TRANSACTIONS ON ELECTRICAL POWER, Issue 3 2003
D. Hur
This paper presents an algorithm for the parallel solution of the security constrained optimal power flow (SCOPF) problem in a decentralized framework, consisting of regions, using a price-based mechanism that models each region as an economic unit. We first solve the distributed optimal power flow (OPF) problem to determine the maximum secure simultaneous transfer capability of each tie-line between adjacent regions by taking only the security constraints imposed on the tie-lines into account. In this paper, the line outage distribution factors (LODF) calculated at the current state are used to formulate the appended constraints. Once the secure transfer capability of each tie-line is determined, the intra-regional SCOPF is performed using the conventional linear programming (LP) approach. A description on the inclusion of security constraints with distributed OPF algorithm will be given, followed by the case study for Korea Electric Power System. [source]

Successive expansion method of network planning applying symbolic analysis method

EUROPEAN TRANSACTIONS ON ELECTRICAL POWER, Issue 4 2002
kokljev
The conventional power system network successive expansion planning method is discussed in the context of the new paradigm of competitive electric power, energy and service market. In sequel, the paper presents an application of the conceptually new computer program, based on the symbolic analysis of load flows in power system networks. The network parameters and variables are defined as symbols. The symbolic analyzer which models analytically the power system DC load flows enables the sensitivity analysis of the power system to parameter and variable variations (costs, transfers, injections), a valuable tool for the expansion planning analysis. That virtue could not be found within the conventional approach, relying on compensation methods, precalculated distribution factors, and so on. This novel application sheds some light on the traditional power system network expansion planning method, as well as on its possible application within the system network expansion planning in the new environment assuming the competitive electric power market. [source]

Copper and cadmium extraction from highly concentrated phosphoric acid solutions using calcium alginate gels enclosing bis(2,4,4-trimethylpentyl)thiophosphinic acid

JOURNAL OF CHEMICAL TECHNOLOGY & BIOTECHNOLOGY, Issue 8 2006
Argune Ocio
Abstract The availability of alginate gels enclosing Cyanex 302 [bis(2,4,4-trimethylpentyl)thiophosphinic acid] for the uptake of cadmium and copper from highly concentrated solutions of industrial phosphoric acid wet process phosphoric acid (WPA)] was studied. For this purpose, beads of alginate gels enclosing microdrops of kerosene solutions of the industrial extractant Cyanex 302 at different concentrations were prepared. The experimental procedure gives rise to a composite bead in which alginate is the continuous phase and the organic extractant forms the discrete homogeneously distributed phase within the bead. The equilibrium in this three-phase system (phosphoric acid,extractant solution,alginate gel) was modelled in terms of the corresponding distribution factors, the main chemical reactions and their equilibrium constants. Retention isotherms of both metal ions were obtained experimentally at four concentrations (1.0, 2.5, 5.0 and 7.5 mol L,1) of pure phosphoric acid. High metal removal efficiency, due to liquid,liquid extraction processes, was observed even in the most acidic conditions. High values of the extraction constants were estimated, with the distribution coefficients between aqueous and alginate phase being near unity. Finally, the results obtained with industrial WPA are in close agreement with those predicted by the physicochemical model developed in synthetic media. Copyright © 2006 Society of Chemical Industry [source]