Home About us Contact
|
Home About us Contact | ||
|
|
||
Main Findings (main + finding)
Selected AbstractsMedicine as a performing art: a worthy metaphorMEDICAL EDUCATION, Issue 10 2003James O Woolliscroft Purpose ,Despite numerous calls for reform over several decades, medical educators have been unable to address many significant challenges. Potentially, employing new metaphors and looking at the teaching and learning of medicine in a new way will facilitate the development of creative solutions. Main findings ,In this paper we propose the metaphor of medicine as a performing art. Building on this metaphor, string music education is compared to medical education. Principal conclusions ,Looking to string education as a model, suggestions for reorganisation of learning experiences, academic structure and assessment are discussed. Medical educators are encouraged to think about the challenges they face in creative ways. By looking outside traditional medical education, solutions may be found to new and old educational dilemmas. [source] Functional neural correlates of mindfulness meditations in comparison with psychotherapy, pharmacotherapy and placebo effect.ACTA NEUROPSYCHIATRICA, Issue 3 2010Is there a link? Chiesa A, Brambilla P, Serretti A. Functional neural correlates of mindfulness meditations in comparison with psychotherapy, pharmacotherapy and placebo effect. Is there a link? Objective: Mindfulness meditations (MM) are a group of meditation practices which are increasingly receiving attention. The aim of the present work is to review current findings about the neural correlates of MM and compare such findings with other specific and non-specific treatments. Methods: A literature search was undertaken using MEDLINE, ISI web of knowledge, the Cochrane database and references of retrieved articles. Studies which focused on the functional neural correlates of MM, psychotherapy, pharmacotherapy and placebo published up to August 2009 were screened in order to be considered for the inclusion. Results: Main findings suggest that long-term MM practice allows a more flexible emotional regulation by engaging frontal cortical structures to dampen automatic amygdala activation. A large overlap exists between cerebral areas activated during MM, psychotherapy, pharmacotherapy and those activated by placebo. However, while MM, psychotherapy and placebo seem to act through a top-down regulation, antidepressants seem to act through a bottom-up process. Conclusion: MM seem to target specific brain areas related to emotions and emotional regulation. Similar mechanisms have been observed also in other interventions, particularly psychotherapy. [source] Development of multisensory spatial integration and perception in humansDEVELOPMENTAL SCIENCE, Issue 5 2006Patricia A. Neil Previous studies have shown that adults respond faster and more reliably to bimodal compared to unimodal localization cues. The current study investigated for the first time the development of audiovisual (A-V) integration in spatial localization behavior in infants between 1 and 10 months of age. We observed infants' head and eye movements in response to auditory, visual, or both kinds of stimuli presented either 25° or 45° to the right or left of midline. Infants under 8 months of age intermittently showed response latencies significantly faster toward audiovisual targets than toward either auditory or visual targets alone They did so, however, without exhibiting a reliable violation of the Race Model, suggesting that probability summation alone could explain the faster bimodal response. In contrast, infants between 8 and 10 months of age exhibited bimodal response latencies significantly faster than unimodal latencies for both eccentricity conditions and their latencies violated the Race Model at 25° eccentricity. In addition to this main finding, we found age-dependent eccentricity and modality effects on response latencies. Together, these findings suggest that audiovisual integration emerges late in the first year of life and are consistent with neurophysiological findings from multisensory sites in the superior colliculus of infant monkeys showing that multisensory enhancement of responsiveness is not present at birth but emerges later in life. [source] The characteristics of young and adult dyslexics readers on reading and reading related cognitive tasks as compared to normal readersDYSLEXIA, Issue 2 2005Shelley Miller-Shaul Abstract Most of the research into dyslexia has been carried out among children and has raised the question whether the characteristics of young dyslexics are similar to those of adult dyslexics. The aim of this research was, therefore, to confirm whether the cognitive deficits, which appear among young dyslexics on reading and reading related tasks, are similar among adult dyslexics. Four groups of subjects were tested in this study: two groups of fourth graders, dyslexic and normal readers, and two groups of students, compensated dyslexics and normal readers. A comparison of the differences in research measures between the young dyslexics and their control group, and between the adult dyslexics and their control group, clearly indicates that the difference between regular readers and dyslexics is significantly smaller in the adult group on orthographic tasks, and this difference increases in adults on phonological tasks. The findings of this study reinforce the assumption that dyslexics have particular difficulty with the phonological-auditory channel. Another main finding is the slow speed of processing in verbal and non-verbal tasks. It can be assumed that these problems start at a young age and persist in compensated adult dyslexics. Copyright © 2005 John Wiley & Sons, Ltd. [source] Increased inflammatory markers in children with familial hypercholesterolaemiaEUROPEAN JOURNAL OF CLINICAL INVESTIGATION, Issue 3 2006T. Ueland Abstract Background, While data are abundant on increased levels of inflammatory markers in adult patients with hypercholesterolaemia, such data in children are limited. Therefore, we sought to investigate the degree and character of inflammation in children with heterozygous familial hypercholesterolaemia (FH) by measuring levels of neopterin, high-sensitivity C-reactive protein (hsCRP), and soluble CD40 ligand (sCD40L). Materials and methods, In the present study, we compared the concentration of inflammatory markers in children suffering from heterozygous FH (n = 207) with those in unaffected siblings (n = 84). Furthermore, we investigated the effect of 2-year treatment with pravastatin (20,40 mg qd) or placebo on plasma levels of those markers. Results, Our main finding was that serum levels of neopterin and hsCRP were significantly higher in FH children compared with healthy siblings, whereas sCD40L was not. Body mass index and high-density lipoprotein cholesterol levels were significant independent predictors of hsCRP and neopterin. Furthermore, pravastatin therapy decreased neopterin, but not hsCRP and sCD40L, in the FH children, but these changes were not different from the placebo group. Conclusion, These findings indicate low-grade monocyte/macrophage hyperactivity in the early stages of atherogenesis, but our findings also suggest that inflammation as well as anti-inflammatory effects of statins are less prominent features of atherosclerosis in FH children than in FH adults. [source] Sympatric natural Saccharomyces cerevisiae and S. paradoxus populations have different thermal growth profilesFEMS YEAST RESEARCH, Issue 4-5 2004Joseph Y. Sweeney Abstract Saccharomyces cerevisiae and its close congener S. paradoxus are typically indistinguishable by the phenotypic criteria of classical yeast taxonomy, but they are evolutionarily distinct as indicated by hybrid spore inviability and genomic sequence divergence. Previous work has shown that these two species coexist in oak-associated microhabitats at natural woodland sites in North America. Here, we show that sympatric populations of S. cerevisiae and S. paradoxus from a single natural site are phenotypically differentiated in their growth rate responses to temperature. Our main finding is that the S. cerevisiae population exhibits a markedly higher growth rate at 37°C than the S. paradoxus population; we also find possible differences in growth rate between these populations at two lower temperatures. We discuss the implications of our results for the coexistence of these yeasts in natural environments, and we suggest that thermal growth response may be an evolutionarily labile feature of these organisms that could be analyzed using genomic approaches. [source] MULTILEVEL FRAMING: AN ALTERNATIVE UNDERSTANDING OF BUDGET CONTROL IN PUBLIC ENTERPRISESFINANCIAL ACCOUNTABILITY & MANAGEMENT, Issue 2 2010Lars Fallan This paper addresses the question as to why there tends to be recurring budget deviations in public sector service organizations. In the public sector, budgets and actuals are loosely coupled, and budgets may serve other institutional functions than control purposes. However, little research has addressed how the framing of budget information may explain the different functions of the budgets as control devices. The paper argues that the valence of budget deviations varies between organizations, and that organizations that have a positively oriented valence towards budget surpluses have a propensity to underspend the budgets. Consequently, organizations that have a positively oriented valence towards budget deficits tend to overspend the budgets. The empirical part analyses the budget situations in the Central Bank of Norway and in a large university hospital in Norway. In the case of the Bank, it was found that underspending of budgets was framed as performance measures indicating high organizational efficiency. The Hospital, on the other hand, showed a different picture as budget deficits were the situation during all years studied. One main finding was the key actors' roles as translators of the society's expectations as to the fulfilling of the organizations' missions. These translators function as mediators between the institutional context and pressures, the organizations' goals and the internal budget processes. The conventional wisdom that the budget also acts as a means of communication and as symbols and ritual acts that reflect the institutional contingencies of the organizations, is further developed by describing how organizations' goals valence the role of budgets. [source] Short Selling and the Weekend Effect in Nasdaq Stock ReturnsFINANCIAL REVIEW, Issue 1 2009Stephen E. Christophe G10; G11 Abstract We examine daily short selling of Nasdaq stocks to explore whether speculative short selling causes a significant portion of the weekend effect in returns. We identify a weekend effect in speculative short selling whereby it constitutes a larger percentage of trading volume on Mondays versus Fridays. We find an opposite effect in dealer short selling, consistent with market makers adding liquidity and stability. Our main finding is that speculative short selling does not explain an economically meaningful portion of the weekend effect in returns, even among the firms most that are most actively shorted. This finding contradicts some prior studies. [source] Pension Reform, Capital Markets and the Rate of ReturnGERMAN ECONOMIC REVIEW, Issue 2 2003Axel Börsch-Supan Aging; pension reform; rates of return Abstract. This paper discusses the consequences of population aging and a fundamental pension reform , that is, a shift towards more pre-funding , for capital markets in Germany. We use a stylized closed-economy, overlapping-generations model to compare the effects of the recent German pension reform with those of a more decisive reform that would freeze the current pay-as-you-go contribution rate and thus result in a larger funded component of the pension system. We predict rates of return to capital under both reform scenarios over a long horizon, taking demographic projections as given. Our main finding is that the future decrease in the rate of return is much smaller than often claimed in the public debate. Our simulations show that the capital stock will decrease once the baby-boom generations enter retirement, even if there were no fundamental pension reform. The corresponding decrease in the rate of return, the direct effect of population aging, is around 0.7 percentage points. While the capital market effects of the recent German pension reform are marginal, the rate of return to capital would decrease by an additional 0.5 percentage points under the more decisive reform proposal. [source] The role of permanent and transitory shocks in explaining international health expendituresHEALTH ECONOMICS, Issue 10 2008Paresh Kumar Narayan Abstract While there is a growing literature that examines the issue of cointegration (co-movement over the long run) among health expenditures, there are no studies that examine the issue of common cycles (co-movement over the short run) among health expenditures. We undertake a multivariate variance decomposition analysis of per capita health expenditures of the USA, the UK, Japan, Canada, and Switzerland based on a common-trend,common-cycle restriction framework, to examine the relative importance of permanent and transitory innovations in explaining variations in per capita health expenditures in each of the five countries. Our main finding is that transitory shocks are more important in explaining per capita health expenditures in the UK, Japan, and Switzerland, while permanent shocks dominate variations in per capita health expenditures in the USA and Canada over short horizons. Copyright © 2007 John Wiley & Sons, Ltd. [source] Do health expenditures ,catch-up'?HEALTH ECONOMICS, Issue 10 2007Evidence from OECD countries Abstract In this paper, we examine the ,catch-up' hypothesis, that is, whether or not per capita health expenditures of the UK, Canada, Japan, Switzerland, and Spain converge to the per capita health expenditures of the USA over the period 1960,2000. We propose a framework to examine convergence of health expenditures and use recent developments in unit root testing, namely the Lagrange multiplier univariate and panel approaches that allow for at most two structural breaks. Our main finding is that while univariate and panel tests that do not incorporate structural breaks fail to find evidence of convergence, univariate and panel LM tests that allow for structural breaks find strong evidence of convergence of per capita health expenditures of the UK, Canada, Japan, Switzerland, and Spain to that of the USA. Copyright © 2007 John Wiley & Sons, Ltd. [source] Posterior cingulate activation during moral dilemma in adolescentsHUMAN BRAIN MAPPING, Issue 8 2008Jesus Pujol Abstract Neuroimaging research examining correlates of adolescent behavioral maturation has focused largely on issues related to higher cognitive development. Currently few studies have explored neural correlates of emotional reactivity in adolescent groups. In this study, we sought to examine the nature of posterior cingulate activation during situations of moral dilemma in normal adolescents. We focused on this region because of emerging evidence that suggests its role in emotionally self-relevant mental processing. Ten healthy teenagers, aged from 14 to 16 years, underwent three fMRI sequences designed to examine (i) brain responses during moral dilemma; (ii) brain responses during passive viewing of the moral dilemma outcome; and (iii); "deactivation" during a simple cognitive task compared with resting-state activity. Our main finding was that during moral dilemma, all subjects showed significant activation of the posterior cingulate cortex, and more variable activation of the medial frontal cortex and angular gyrus. Interestingly, these findings were replicated in each subject using the passive viewing task, suggesting that the previous pattern was not specific to moral reasoning or decision making. Finally, six of the ten subjects showed deactivation of the same posterior cingulate region during the cognitive task, indicating some commonality of function between posterior cingulate activity during moral dilemmas and rest. We propose that these posterior cingulate changes may relate to basic neuronal activities associated with processing self-relevant emotional stimuli. Given the high single-subject reproducibility of posterior cingulate activations, our findings may contribute to further characterize adolescent emotional reactivity in developmental neuroimaging studies. Hum Brain Mapp, 2008. © 2007 Wiley-Liss, Inc. [source] Interdependencies between Monetary Policy and Foreign Exchange Interventions under Inflation Targeting: The Case of Brazil and the Czech RepublicINTERNATIONAL FINANCE, Issue 2 2010Jean-Yves Gnabo Inflation-targeting central banks often explicitly reserve the right to intervene in foreign exchange markets when the exchange rate ,deviates from fundamentals' and/or ,displays excessive volatility'. In the case of emerging markets, central banks can often ill afford to neglect exchange rate developments when setting monetary policy because of a high pass-through of nominal exchange rate changes to domestic prices. As a result, interventions and monetary policy are interrelated, a hypothesis that has been overlooked in the literature. To bridge this gap, this paper includes monetary policy indicators in the estimation of intervention reaction functions for Brazil and the Czech Republic since the adoption of inflation targeting. Our main finding is that interventions take place independently of the contemporaneous monetary policy setting in Brazil, but not in the Czech Republic, where both policies appear to be coordinated. [source] Migration, Motherhood, Marriage: Cross-Cultural Adaptation of North American Immigrant Mothers in IsraelINTERNATIONAL MIGRATION, Issue 1 2009Laura I. Sigad This study probes the cross-cultural adaptation patterns of North American women who immigrated to Israel with their Israeli-born husbands (or married there) and are mothers in their new country. In order to undertake a cultural analysis of the interplay between immigration, motherhood and bicultural marriage, we examine: the effects of motherhood and North American culture of origin on cross-cultural adaptation; the effects of immigration to Israel on motherhood and childrearing; the influence of family of origin on the immigrant motherhood experience; and the role of Israeli husbands and their families in the women's cross-cultural adaptation process. We study patterns for the entire group as well as bringing out individual differences. Our main finding is that motherhood serves as the principal social link to the Israeli host society. The high status of North American culture and English proficiency facilitate cross-cultural adaptation in Israel. Our findings reveal transnationalist tendencies co-existing with various adaptation strategies. We propose an expansion of previous acculturation models to accommodate this dual modus vivendi. [source] A Reexamination of the Tradeoff between the Future Benefit and Riskiness of R&D IncreasesJOURNAL OF ACCOUNTING RESEARCH, Issue 1 2008ALLAN EBERHART ABSTRACT Many previous studies document a positive relation between research and development (R&D) and equity value. Though R&D can increase equity value by increasing firm value, it can also increase equity value at the expense of bondholder wealth through an increase in firm risk because equity is analogous to a call option on the underlying firm value. Shi [2003] tests this hypothesis by examining the relation between a firm's R&D intensity and its bond ratings and risk premiums at issuance. His results show that the net effect of R&D is negative for bondholders. We reexamine Shi's [2003] findings and in so doing make three contributions to the literature. First, we find that Shi's [2003] results are sensitive to the method of measuring R&D intensity. When we use what we argue is a better measure of R&D intensity, we find that the net effect of R&D is positive for bondholders. Second, when we use tests that Shi [2003] recognizes are even better than the ones that he uses, we find even stronger evidence of the positive effect of R&D on bondholders. Third, we examine cross-sectional differences in the effect of R&D on debtholders. Consistent with our main finding, we document a negative relation between R&D increases and default risk. The default risk reduction is also more pronounced for firms with higher initial default scores (where the debtholders have more to gain from an R&D increase) and for firms with more bank debt (where the debtholders have greater covenant protection from the possible detriments associated with R&D increases). [source] Assessing the balance capabilities of people with profound intellectual disabilities who have experienced a fallJOURNAL OF INTELLECTUAL DISABILITY RESEARCH, Issue 4 2007L. Hale Abstract Background Although it is common for people with intellectual disability (ID) to fall, the reasons for this have not yet been identified. This pilot study aimed to explore the balance capabilities of a sample of adults with profound ID who had experienced a fall, in order to identify possible reasons for falling and to identify potential tests that could be used to quantify balance capabilities in this population group. Methods The neuromuscular systems and balance capabilities of 20 adults with profound ID were comprehensively assessed with a battery of tests, including computerized posturography. Results Of the 20 participants, 15 described themselves as frequent fallers, and 10 participants reported serious injuries as a result of falling. Formalized assessment of the neuromuscular and balance capabilities proved to be challenging, with many participants unable to comprehend what was required of them in the performance of a number of the tests. All participants were observed to have an abnormal pattern of walking. Nine participants completed posturography testing, the main finding of which was that low motor control composite scores indicated a slowing of motor responses to postural perturbations. Other potential risk factors identified were concurrent medical problems, medication, the context and environment of falling, movement impulsiveness and distractibility, and visual deficits. Conclusion The reason why people with ID frequently fall appears complex and multifactorial. Larger studies are required to verify the potential risk factors identified in this pilot study. Many of the standardized outcome measures commonly used in physiotherapy practice to quantify balance capabilities are not suitable for use in this population group, as participants found it difficult to comprehend what was required of them. Allowing the person to become familiarized with both the test and the tester may help to alleviate this problem. Videotaping and quantifying observations of strategies people use to perform common movements such as walking or turning maybe a more appropriate measurement tool of balance capabilities of people with ID than current standardized measures. This method would require rigorous development. [source] Relationship Lending, Accounting Disclosure, and Credit Availability during the Asian Financial CrisisJOURNAL OF MONEY, CREDIT AND BANKING, Issue 1 2008WENYING JIANGLI relationship lending; accounting disclosure We examine whether lending relationships benefit firms by making credit more available during periods of financial stress. Our main finding is that during the Asian financial crisis of July 1997 through the end of 1998, relationship lending increased the likelihood that Korean and Thai firms would obtain credit but it had no effect on Indonesian and Philippine firms. We ask if accounting disclosure might explain the observed differences among the three countries for which audit information is available. We find that for Indonesian firms with weak lending relationships, banks replace relationship lending technology with a financial-statement lending technology. Such a result does not hold for Korean and Philippine firms. [source] The dynamics between structure and flexibility in constant observation of psychiatric inpatients with suicidal ideationJOURNAL OF PSYCHIATRIC & MENTAL HEALTH NURSING, Issue 5 2005G. B. VRÅLE rn cand.mag The aim of the study is to describe how expert nurses perform constant observation of patients with suicidal ideation. A qualitative content analysis is used to analyse individual and focus group interviews of five nurses. One main finding is identified: organizing phases and transitional phases formed during constant observation and the creation of a therapeutic relation. The findings are explained and discussed. In summary, the findings show that constant observation of inpatients with suicidal ideation seems to consist of two main aspects. One refers to its phases and consists primarily of assessing the need for control and controlling the patient from self-harm. The other aspect refers to the relationship between the nurse and the patient during a period of constant observation. There is a dynamic relation between structure and flexibility, and between control and the development of a therapeutic relationship between the patient and the nurse. The therapeutic relation is important when staff assess the need to continue round-the-clock observation. [source] A Theory of Broadcast Media Concentration and Commercial AdvertisingJOURNAL OF PUBLIC ECONOMIC THEORY, Issue 4 2004Brendan M. Cunningham We analyze a model in which the interaction of broadcasters, advertisers, and consumers determines the level of nonadvertising broadcasting produced and consumed. Our main finding is that an increase in concentration in broadcast media industries may lead to a decrease in the total amount of nonadvertising broadcasting. The strength of this inverse relationship depends, in part, on the behavioral response of the consumers to changes in advertising intensities. We also present a numerical general equilibrium solution to our model and demonstrate a positive relationship between consumer welfare and the number of firms in the broadcast industry. [source] SAFETY OF DEXTROAMPHETAMINE AND COCAINE COMBINATIONS IN COCAINE USERSALCOHOLISM, Issue 2008William Murff Two studies evaluated the safety and abuse liability of d-amphetamine in combination with cocaine in twenty cocaine-using research volunteers maintained in a controlled research laboratory. The first study tested low doses of d-amphetamine (15 mg) administered orally as a 1.5-hr pretreatment before low intranasal doses (48 mg) of cocaine. The study was double-blind, double-dummy, and placebo-controlled. A dose run-up procedure was employed to maximize safety. All drug effects were modest and the main finding of the study was diminished subjective effects of cocaine on a replicate determination of the original cocaine dose. The second study examined higher doses of d-amphetamine (30 mg, p.o.) and cocaine (96 mg, i.n.), alone and in combination, without a gradual dose run-up. Cocaine alone increased subjective mood, cocaine craving, and ratings indicating cocaine abuse potential. Again, replicate administration of cocaine produced lesser subjective effects than the first dose. D-amphetamine alone increased systolic and mean arterial pressures, but produced minimal effects on subjective mood. The combination of d-amphetamine and cocaine never produced effects greater than cocaine alone except for one subject who had an asymptomatic hypertensive episode. The data are interpreted in light of the possible use of stimulants for the treatment of cocaine dependence. [source] Is There a Natural Rate of Crime?AMERICAN JOURNAL OF ECONOMICS AND SOCIOLOGY, Issue 2 2010Paresh Kumar Narayan Studies in the economics of crime literature have reached mixed conclusions on the deterrence hypothesis. One explanation that has been offered for the failure to find evidence of a deterrent effect in the long run is the natural rate of crime. This article applies univariate unit root tests to crime series for the United Kingdom and United States and panel unit roots to crime rates for a panel of G7 countries to examine whether there is a natural rate of crime. Our main finding is that when we allow for two structural breaks in the univariate unit root test and a structural break in the panel data unit root test, there is strong evidence of a natural rate of crime. The policy implications of our findings is that governments should focus on altering the economic and social structural profile that determines crime in the long run rather than increasing expenditure on law enforcement that will at best reduce crime rates in the short run. [source] ARE OUTPUT FLUCTUATIONS TRANSITORY?PACIFIC ECONOMIC REVIEW, Issue 4 2004NEW EVIDENCE FROM 24 CHINESE PROVINCES We examine this issue for 24 Chinese provinces using the recently developed Lagrange multiplier panel unit root test which allows for a structural break. Our main finding is that real gross domestic product (GDP) and real GDP per capita for Chinese provinces are stationary fluctuations around a deterministic trend. [source] Citizens' Perceptions of Ideological Bias in Research on Public Policy ControversiesPOLITICAL PSYCHOLOGY, Issue 1 2009Robert J. MacCoun How do ordinary citizens react to new policy-relevant findings that they learn about from media mentions or word of mouth? We conducted an experiment embedded in a random-digit-dial (RDD) telephone survey of 1,050 California adults. Respondents heard a description of a hypothetical study on one of four politicized topics or a politically neutral topic (nutrition) and were asked to describe their reactions to the study's main finding. As in prior research, citizens were more skeptical when the findings contradicted their prior beliefs about the topic. But, we also found effects of partisanship and ideology even after controlling for specific issue attitudes. Citizens, especially those holding conservative beliefs, tended to attribute studies with liberal findings to the liberalism of the researcher, but citizens were less likely to attribute conservative findings to the conservatism of the researcher. [source] Building e-government in East and Southeast Asia: Regional rhetoric and national (in)actionPUBLIC ADMINISTRATION & DEVELOPMENT, Issue 4 2002Ian HollidayArticle first published online: 9 OCT 200 Among many regional policy initiatives taken by states in East and Southeast Asia in the wake of the 1997 financial crisis, one central project launched by the Association of Southeast Asian Nations (ASEAN), and taken up by its dialogue partners in East Asia, was promotion of information and communication technology. While part of ASEAN's 1999,2004 action plan focused on services for business, another part sought to put public sectors online, and to promote electronic government, or e-government. Taking the 16 states and quasi-states of East and Southeast Asia, this article evaluates progress at the action plan's mid-point in January 2002. It begins by defining e-government and reviewing three academic literatures on the information age, developmental states, and Confucian societies. It then describes the major policy initiatives taken by ASEAN and its partner states, and surveys implementation progress through an analysis of government homepages and sites. Its main finding is that e-government activity in East and Southeast Asia is highly diverse, reflecting national strengths and weaknesses rather than regional capacity for policy change. The article argues for increased attention to national implementation strategies. Copyright © 2002 John Wiley & Sons, Ltd. [source] Heterogeneity in dynamic discrete choice modelsTHE ECONOMETRICS JOURNAL, Issue 1 2010Martin Browning Summary, We consider dynamic discrete choice models with heterogeneity in both the levels parameter and the state dependence parameter. We first present an empirical analysis that motivates the theoretical analysis which follows. The theoretical analysis considers a simple two-state, first-order Markov chain model without covariates in which both transition probabilities are heterogeneous. Using such a model we are able to derive exact small sample results for bias and mean squared error (MSE). We discuss the maximum likelihood approach and derive two novel estimators. The first is a bias corrected version of the Maximum Likelihood Estimator (MLE) although the second, which we term MIMSE, minimizes the integrated mean square error. The MIMSE estimator is always well defined, has a closed-form expression and inherits the desirable large sample properties of the MLE. Our main finding is that in almost all short panel contexts the MIMSE significantly outperforms the other two estimators in terms of MSE. A final section extends the MIMSE estimator to allow for exogenous covariates. [source] Law and Finance in Transition EconomiesTHE ECONOMICS OF TRANSITION, Issue 2 2000Katharina Pistor This paper offers the first comprehensive analysis of legal change in the protection of shareholder and creditor rights in transition economies and its impact on the propensity of firms to raise external finance. Following La Porta et al. (1998), the paper constructs an expanded set of legal indices to capture a range of potential conflicts between different stakeholders of the firm. It supplements the analysis of the law on the books with an analysis of the effectiveness of legal institutions. Our main finding is that the effectiveness of legal institutions has a much stronger impact on external finance than does the law on the books, despite legal change that has substantially improved shareholder and creditor rights. This finding supports the proposition that legal transplants and extensive legal reforms are not sufficient for the evolution of effective legal and market institutions. [source] A mass-conservative version of the semi-implicit semi-Lagrangian HIRLAMTHE QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY, Issue 635 2008P. H. Lauritzen Abstract A mass-conservative version of the semi-implicit semi-Lagrangian High-Resolution Limited-Area Model (HIRLAM) is presented. The explicit continuity equation is solved with the so-called cell-integrated semi-Lagrangian (CISL) method. To allow for long time steps, the CISL scheme is coupled with a recently developed semi-implicit time-stepping scheme that involves the same non-complicated elliptic equation as in HIRLAM. Contrarily to the traditional semi-Lagrangian method, the trajectories are backward in the horizontal and forward in the vertical, i.e. cells moving with the flow depart from model layers and arrive in a regular column, and their vertical displacements are computed from continuity of mass and hydrostatic balance in the arrival column. This involves just two-dimensional upstream integrals and allows for a Lagrangian discretization of the energy conversion term in the thermodynamic equation. Preliminary validation of the new model version is performed using an idealized baroclinic wave test case. The accuracy of the new formulation of HIRLAM is comparable to the reference version though it is slightly more diffusive. A main finding is that the new discretization of the energy conversion term leads to more accurate simulations compared to the traditional ,Eulerian' treatment. Copyright © 2008 Royal Meteorological Society [source] EVALUATING GAINS FROM MERGERS IN A NON-PARAMETRIC PUBLIC GOOD MODEL OF POLICE SERVICESANNALS OF PUBLIC AND COOPERATIVE ECONOMICS, Issue 1 2008Richard SIMPER ABSTRACT,:,The merger of police services in the UK has been suggested on the grounds that efficiency improvements will be possible. This paper applies a public good model of the police service to evaluate the potential efficiency gains from mergers of police services in England and Wales. It uses a non-parametric method suggested by Bogetoft and Wang (2005). We construct a dataset that reflects the public good nature of police service and allows for the exogenous imposition by government on the level of police service budgets. Our main finding is that English and Welsh police service mergers could lead to increases in police staff resource efficiencies between 10 per cent and 70 per cent. Hence, we confirm the government's decision to merge English and Welsh police services. [source] The epidemiology of contact allergy in the general population , prevalence and main findingsCONTACT DERMATITIS, Issue 5 2007Jacob Pontoppidan Thyssen A substantial number of studies have investigated the prevalence of contact allergy in the general population and in unselected subgroups of the general population. The aim of this review was to determine a median prevalence and summarize the main findings from studies on contact allergy in the general population. Published research mainly originates from North America and Western Europe. The median prevalence of contact allergy to at least 1 allergen was 21.2% (range 12.5,40.6%), and the weighted average prevalence was 19.5%, based on data collected on all age groups and all countries between 1966 and 2007. The most prevalent contact allergens were nickel, thimerosal, and fragrance mix. The median nickel allergy prevalence was 8.6% (range 0.7,27.8%) and demonstrates that nickel was an important cause of contact allergy in the general population and that it was widespread in both men and women. Numerous studies demonstrated that pierced ears were a significant risk factor for nickel allergy. Nickel was a risk factor for hand eczema in women. Finally, heavy smoking was associated with contact allergy, mostly in women. Population-based epidemiological studies are considered a prerequisite in the surveillance of national and international contact allergy epidemics. [source] Predicting reading and spelling difficulties in transparent and opaque orthographies: a comparison between Scandinavian and US/Australian childrenDYSLEXIA, Issue 2 2010Bjarte Furnes Abstract In this study, predictors of reading and spelling difficulties among children learning more transparent (Norwegian/Swedish) and less transparent (English) orthographies were examined longitudinally from preschool through Grade 2 using parallel versions of tests. A series of logistic regression analysis indicated three main findings. First, phonological awareness as a predictor of reading difficulties in the Scandinavian sample was time-limited to Grade 1, but remained as a significant predictor in the English-speaking sample. Second, phonological awareness predicted spelling difficulties similarly across orthographies. Third, preschool and kindergarten RAN was a significant predictor of reading and spelling difficulties at both Grades 1 and 2 across orthographies. The authors conclude that phonological awareness diminishes as a predictor of reading difficulties in transparent orthographies after the first years of schooling, that RAN is a better long-term predictor of reading difficulties, and that phonological awareness is associated with spelling difficulties similarly in transparent and opaque orthographies. Copyright © 2010 John Wiley & Sons, Ltd. [source] | ||||||||||||||||||||||||||||||||||||||||||||||||||||