OPEC as a Social Welfare Maximizer

We maximize OPEC's social welfare from their oil production including the domestic as well as the export market. For welfare maximization OPEC countries should set domestic oil price equal to the marginal revenues from the oil export market and, therefore, domestic oil price should be lower than the world price. Our base case price leader model yields a 1995 export price of $14.21/bbl (barel) and 27,042 MBPD (thousands of barrels per day) of OPEC exports with a domestic price and quantity of$5.22/bbl and 5,175 MBPD for the base case. However, with competition world oil price should fall dramatically to $6.40 per barrel with OPEC's world market share approaching 70%.

A survey of energy demand elasticities in support of the development of the NEMS

With NEMS, there has been increased interest in modeling energy markets and a resurgent interest in energy elasticities of demand. Since such elasticities are often a convenient way to summarize the responsiveness of demand to such things as own prices, cross prices, income, or other relevant variables, a substantial amount of resources have been devoted to estimating demand elasticities, at various levels of aggregation using a variety of models. The goal of this project is to survey these works for the U.S. on energy demand elasticities, do a critical analysis of them, attempt to come up with summary elasticities, discuss the scope and breadth of the work that has been done, and make suggestions for further research.energy demand elasticities; price; income

A survey of energy demand elasticities in support of the development of the NEMS

With NEMS, there has been increased interest in modeling energy markets and a resurgent interest in energy elasticities of demand. Since such elasticities are often a convenient way to summarize the responsiveness of demand to such things as own prices, cross prices, income, or other relevant variables, a substantial amount of resources have been devoted to estimating demand elasticities, at various levels of aggregation using a variety of models. The goal of this project is to survey these works for the U.S. on energy demand elasticities, do a critical analysis of them, attempt to come up with summary elasticities, discuss the scope and breadth of the work that has been done, and make suggestions for further research

IGEMS : The Consortium on Interplay of Genes and Environment Across Multiple Studies - An Update

The Interplay of Genes and Environment across Multiple Studies (IGEMS) is a consortium of 18 twin studies from 5 different countries (Sweden, Denmark, Finland, United States, and Australia) established to explore the nature of gene-environment (GE) interplay in functioning across the adult lifespan. Fifteen of the studies are longitudinal, with follow-up as long as 59 years after baseline. The combined data from over 76,000 participants aged 14-103 at intake (including over 10,000 monozygotic and over 17,000 dizygotic twin pairs) support two primary research emphases: (1) investigation of models of GE interplay of early life adversity, and social factors at micro and macro environmental levels and with diverse outcomes, including mortality, physical functioning and psychological functioning; and (2) improved understanding of risk and protective factors for dementia by incorporating unmeasured and measured genetic factors with a wide range of exposures measured in young adulthood, midlife and later life.Peer reviewe

The role of lipids in mechanosensation

Acknowledgements: This work was supported by Wellcome Trust grants WT092552MA (J.H.N. and I.R.B.), Senior Investigator Award WT100209MA (J.H.N.), 093228 (T.K.S.) and 092970 (M.S.P.S.), and Biotechnology and Biological Sciences Research Council grants BB/I019855/1 (M.S.P.S.), BB/H017917/1 (J.H.N. and I.R.B.) and BB/J009784/1 (H.B.). We acknowledge the Diamond Light Source for beam time. I.R.B. is supported as a Leverhulme Emeritus Fellow. J.H.N. is supported as a Royal Society Wolfson Merit Award holder and as a 1000 Talent Scholar at Sichuan University. A.C.E.D. was supported by an Engineering and Physical Sciences Research Council Systems Biology Doctoral Training Centre student fellowship. We thank R. Phillips, A. Lee and S. Conway for helpful discussions.Peer reviewedPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprintPostprin

Evaluation Research and Institutional Pressures: Challenges in Public-Nonprofit Contracting

This article examines the connection between program evaluation research and decision-making by public managers. Drawing on neo-institutional theory, a framework is presented for diagnosing the pressures and conditions that lead alternatively toward or away the rational use of evaluation research. Three cases of public-nonprofit contracting for the delivery of major programs are presented to clarify the way coercive, mimetic, and normative pressures interfere with a sound connection being made between research and implementation. The article concludes by considering how public managers can respond to the isomorphic pressures in their environment that make it hard to act on data relating to program performance.This publication is Hauser Center Working Paper No. 23. The Hauser Center Working Paper Series was launched during the summer of 2000. The Series enables the Hauser Center to share with a broad audience important works-in-progress written by Hauser Center scholars and researchers

Sleep and its association with aggression among prisoners: Quantity or quality?

Objective: The current paper aims to examine the association between self-reported sleep quality and quantity and how these relate to aggression motivation and hostile cognition in a male prisoner sample. The cognitive component of sleep, namely perception, is consequently a variable of particular interest and one neglected by previous research. Methods: Two independent studies are presented. The first comprised 95 adult male prisoners who completed a sleep quality index along with measures of implicit and explicit aggression. The second study extended this to consider aggression motivation and hostile attribution biases using a sample of 141 young male adult prisoners. Results: In study one, sleep quantity and indicators of sleep quality were found not to associate with aggression whereas the perception of poor sleep did; those perceiving poor sleep quality were more likely than those perceiving good sleep to report they had perpetrated aggression in the previous week and to report higher levels of implicit aggression. Study two found that while increased indicators of poor sleep quality were associated with lower prosocial attribution tendencies and higher levels of reactive and proactive aggression, sleep quantity was not associated. The perception of poor quality sleep was important; those perceiving poor sleep were more likely to report higher levels of reactive and proactive aggression than those reporting good sleep. Conclusions: Collectively the studies highlight the importance of accounting for the perception of sleep quality as an important cognitive component in understanding the association between sleep and aggression

MPs’ principals and the substantive representation of disadvantaged immigrant groups

This article provides an alternative understanding of the substantive representation of immigrant-origin citizens compared to previous work in the ‘politics of presence’ tradition. Rather than assuming that the representational activities of members of parliaments (MPs) are underpinned by intrinsic motivations, it highlights extrinsic motives. Drawing on principal–agent theory, the article conceptualises MPs as delegates who are to act on behalf of their main principals, constituents and party bodies. This approach permits the rigorous analysis of the impact of electoral rules, candidate selection methods and legislative organisation on substantive representation. Based on an analysis of more than 20,000 written parliamentary questions tabled in the 17th German Bundestag (2009–2013), empirical findings suggest that electoral rules do not influence the relationship between MPs and their principals in relation to the substantive representation of disadvantaged immigrant groups; however, results indicate that candidate selection methods as well as powerful parliamentary party group leaderships do

De Novo Sequence and Copy Number Variants Are Strongly Associated with Tourette Disorder and Implicate Cell Polarity in Pathogenesis

We previously established the contribution of de novo damaging sequence variants to Tourette disorder (TD) through whole-exome sequencing of 511 trios. Here, we sequence an additional 291 TD trios and analyze the combined set of 802 trios. We observe an overrepresentation of de novo damaging variants in simplex, but not multiplex, families; we identify a high-confidence TD risk gene, CELSR3 (cadherin EGF LAG seven-pass G-type receptor 3); we find that the genes mutated in TD patients are enriched for those related to cell polarity, suggesting a common pathway underlying pathobiology; and we confirm a statistically significant excess of de novo copy number variants in TD. Finally, we identify significant overlap of de novo sequence variants between TD and obsessive-compulsive disorder and de novo copy number variants between TD and autism spectrum disorder, consistent with shared genetic risk