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Model Reveals (model + reveal)
Selected AbstractsA DYNAMIC ANALYSIS OF EDUCATIONAL ATTAINMENT, OCCUPATIONAL CHOICES, AND JOB SEARCH,INTERNATIONAL ECONOMIC REVIEW, Issue 1 2010Paul Sullivan This article examines career choices using a dynamic structural model that nests a job search model within a human capital model of occupational and educational choices. Wage growth occurs in the model because workers move between firms and occupations as they search for suitable job matches and because workers endogenously accumulate firm and occupation specific human capital. Simulations performed using the estimated model reveal that both self-selection in occupational choices and mobility between firms account for a much larger share of total earnings and utility than the combined effects of firm and occupation specific human capital. [source] Workers' Remittances to India: An Examination of Transfer Cost and EfficiencyINTERNATIONAL MIGRATION, Issue 5 2010Bhupal Singh Regarding the time efficiency of remittance transfer channels to India, the evidence suggests that traditional banking instruments are relatively inefficient as compared to the new information technology-enabled products. Transfer arrangement of the Indian banks with overseas exchange houses has reduced the settlement cycle and the cost. Both the banks and money transfer operators (MTOs) are able to keep the transaction cycle low through the use of information technology-enabled formats. Given that the average cost curve of the banks is located to the right of the average cost curve of the MTOs, greater potential exists for the improvement in overall efficiency of the two entities, particularly through the sharing of messaging and the access and disbursement networks to reduce the overhead cost. The estimates of error correction model reveal that the transaction fee and payment infrastructure are significant determinants of remittance flows, underscoring the scope of policy measures in influencing remittance inflows. The estimates indicate that over the medium to long-term horizon, transaction cost emerges as the most dominant variable explaining the variation in remittances. The payments infrastructure also explains about 10 per cent variation in remittances over the medium-term. The impulse response analysis further reveals that the favourable shocks to transaction fees and the payments infrastructure cause steady improvement in remittance inflows over the medium-term horizon, thus underlining the importance of cost and efficiency in affecting the workers' remittances. [source] Endogenous Public Expenditures on EducationJOURNAL OF PUBLIC ECONOMIC THEORY, Issue 4 2005PETER BEARSE We construct a model of the determination of public funding of education through majority voting. Households have the option of privately supplementing public education. Alternatively, they can opt out of public education completely and choose private education. We find that in general the single-crossing property cannot be used to establish existence of a majority voting equilibrium. Numerical solutions of the model reveal (i) when public education inputs and private supplements are substitutes, private school enrollment is often zero; and (ii) the funding level for public education is very sensitive to the productivity of private supplements and the elasticity of substitution between public inputs and private supplements. [source] ALLEE EFFECT AND SELF-FERTILIZATION IN HERMAPHRODITES: REPRODUCTIVE ASSURANCE IN DEMOGRAPHICALLY STABLE POPULATIONSEVOLUTION, Issue 12 2004Pierre-Olivier Cheptou Abstract The fact that selfing increases seed set (reproductive assurance) has often been put forward as an important selective force for the evolution of selfing. However, the role of reproductive assurance in hermaphroditic populations is far from being clear because of a lack of theoretical work. Here, I propose a theoretical model that analyzes selffertilization in the presence of reproductive assurance. Because reproductive assurance directly influences the per capita growth rate, I developed an explicit demographic model for partial selfers in the presence of reproductive assurance, specifically when outcrossing is limited by the possibility of pollen transfer (Allee effect). Mating system parameters are derived as a function of the underlying demographical parameters. The functional link between population demography and mating system parameters (reproductive assurance, selfing rate) can be characterized. The demographic model permits the analysis of the evolution of self-fertilization in stable populations when reproductive assurance occurs. The model reveals some counterintuitive results such as the fact that increasing the fraction of selfed ovules can, in certain circumstances, increase the fraction of outcrossed ovules. Moreover, I demonstrate that reproductive assurance per se cannot account for the evolution of stable mixed selfing rates. Also, the model reveals that the extinction of outcrossing populations depends on small changes in population density (ecological perturbations), while the transition from outcrossing to selfing can, in certain cases, lead the population to extinction (evolutionary suicide). More generally, this paper highlights the fact that self-fertilization affects both the dynamics of individuals and the dynamics of selfing genes in hermaphroditic populations. [source] Application of the MTD-PLS method to heterocyclic dye,cellulose interactionsINTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, Issue 11 2007Ludovic Kurunczi Abstract The minimal topologic difference method in a projection in latent structures variant procedure was applied to a series of heterocyclic monoazo dyes of the type: RC6H4N = NY (R = benzothiazole, benzimidazole, N-containing aromatic pentacycles; Y = , acid, H acid, chromotropic acid, R acid). A statistically excellent model was obtained: RX2 = 0.625, RY2 = 0.940, Q2 = 0.822. The analysis of this model reveals the nature of dye,fiber interactions, which determine the dye affinity. Hydrophobic character in the R group and H-bond donor groups in a specific Y substitution position augment the dye affinity for cellulose. An increase of the polar nature of atoms in R depletes the affinity. Also some lateral substituents belonging to the Y coupling components suffer steric hindrance, and their presence is detrimental for the affinity. © 2007 Wiley Periodicals, Inc. Int J Quantum Chem, 2007 [source] Which Microfinance Institutions Are Becoming More Cost Effective with Time?JOURNAL OF MONEY, CREDIT AND BANKING, Issue 4 2009Evidence from a Mixture Model microfinance; mixture model; Eastern Europe; Central Asia Microfinance institutions (MFIs) play a key role in many developing countries. Utilizing data from Eastern Europe and Central Asia, MFIs are found to generally operate with lower costs the longer they are in operation. Given the differences in operating environments, subsidies, and organizational form, this finding of increasing cost effectiveness may not aptly characterize all MFIs. Estimation of a mixture model reveals that roughly half of the MFIs are able to operate with reduced costs over time, while half do not. Among other things, we find that larger MFIs offering deposits and those receiving lower subsidies operate more cost effectively over time. [source] Nonlinear Dynamic Relations Between Equity Return and Equity Fund Flow: Korean Market Empirical Evidence,ASIA-PACIFIC JOURNAL OF FINANCIAL STUDIES, Issue 2 2010Sei-Wan Kim C12; C13; G14; G23 Abstract This research studies the dynamic relationship between equity returns and equity fund flows by incorporating nonlinear properties of the two variables. Nonlinear estimation based on a smooth transition autoregressive model reveals results different from those previously reported based on a linear relationship. Our empirical results find that there is significant mutual Granger causality between equity returns and equity fund flows. In addition, by introducing the dividend yield effect, significant Granger causality is also found between the three variables. This can be interpreted as meaning that demand for equities is downward sloping for both the price pressure effect and the information effect. Relatively fast regime switching and dynamic instability show that stock investment through equity funds is mostly short-horizon-oriented investment. [source] | ||||||||||