41 research outputs found
The Operational Practices of Selected Private Higher Education Institutions in Agusan Del Norte
No full textThis research intended to study the operational practices of selected private higher education institutions in Agusan del Norte. Specifically, it sought to determine the extent to which operational practices are observed by the HEIs in the areas of: forecasting, enrolment promotional activities, capacity planning and expansion, and facilities and equipment upgrading. Using the descriptive survey method and with the aid of a researcher-made questionnaire, the following findings were established: 1) the practices of HEIs in the areas of forecasting, enrolment and promotional activities, and capacity planning and expansion were rated to a great extent, while the facilities and equipment upgrading was rated to a very great extent; 2) there is no significant difference in responses among schools using Friedman’s test; and 3) there is a significant difference in certain areas between positions of respondents using ANOVA test
Specific and General Information Sharing Among Academic Scientists
No full textWe provide theoretical and empirical evidence on the factors that influence the willingness of academic scientists to share research results. We distinguish between two types of sharing, specific sharing in which a researcher shares her data or materials with another and general sharing in which scientists report results to the entire community (as in conference presentations). We present two simple games in which scientists research a problem of scientific merit (with an associated prize of academic and/or commercial value). In both cases, the scientists have intermediate research results but none has solved the entire problem.We test these models using a unique survey of bio-scientists in the UK and Germany regarding their willingness to "share." Our results generally support both models. In both, sharing is negatively related to competition and the importance of patents. In other respects they differ markedly. For example, large teams are more likely to share specifically but less likely to share generally. Rank does not matter for general sharing, but it does for specific sharing, where untenured faculty are less likely to share. One important implication is that policies designed to enhance sharing must be tailored to the type of sharing.
Erratum: Search for gravitational waves from compact binary coalescence in LIGO and Virgo data from S5 and VSR1 (Physical Review D - Particles, Fields, Gravitation and Cosmology)
No full textThis paper was published online on 5 November 2010 with an omission in the Collaboration author list. S. Dwyer has
been added as of 12 April 2012. The Collaboration author list is incorrect in the printed version of the journal
Publisher's Note: Search for gravitational waves from binary black hole inspiral, merger, and ringdown
No full textThis paper was published online on 6 June 2011 with an omission in the Collaboration author list. S. Dwyer has been
added as of 12 April 2012. The Collaboration author list is incorrect in the printed version of the journal
Estimating Brand Level Demand Elasticities and Measuring Market Power for Regular Carbonated Soft Drinks
No full textThis paper reports econometric estimation of brand level demand (AIDS) elasticities for regular carbonated soft drinks using Information Resources, Inc. panel data. Own and cross price elasticities are used to measure actual and hypothetical market power that would arise from potential mergers or collusive pricing arrangements.Demand and Price Analysis, Marketing,
Restructuring's Effect on Related and Unrelated Diversification Among Top Food Manufacturing Firms in the 1980s
No full textCorporate restructuring during the 1980s is argued to have focused on improving firm performance by increasing related and decreasing unrelated diversification. The restructuring patterns of top food manufacturing firms do not support this; instead, much of the restructuring appears to have been driven by the pursuit of stronger market positions. TheAgribusiness, Industrial Organization,
What drives deforestation in the Brazilian Amazon? Evidence from satellite and socioeconomic data
No full textThis paper analyzes the determinants of deforestation in the Brazilian Amazon. From a model of optimal use, it derives and then estimates a deforestation equation on county-level data for the period 1978 to 1988. The data include a deforestation measure from satellite images, which is a great advance in that it allows improved within-county analysis. Evidence exists that: increased road density in a county leads to more deforestation in that county and in neighboring counties; development projects were associated with deforestation in the 1970s but not in the 1980s; greater distance from markets south of the Amazon leads to less deforestation; and better soil quality leads to more deforestation. The results for government provision of credit are mixed across specifications. The population density, although the primary explanatory variable in most previous empirical work, does not have a significant effect when all the variables motivated within the model are included. However, a quadratic specification yields a more robust population result: the first few people entering an empty county have significantly more impact than the same number of people added to a densely populated county. This result suggests the importance of the spatial distribution of population.Environmental Economics&Policies,Wetlands,Climate Change,Banks&Banking Reform,Water Conservation,Environmental Economics&Policies,Climate Change,Energy and Environment,Forestry,Banks&Banking Reform
NEW ESTIMATES OF WELFARE AND CONSUMER LOSSES IN U.S. FOOD MANUFACTURING
No full textIn the past 15 years, industrial-organization economists have significantly expanded the range of algorithms for calculating welfare losses due to imperfect competition. We compare eleven empirical estimates of economic losses due to market power in 47 U.S. food manufacturing industries, almost all of them previously unpublished. Each of the studies incorporate different theoretical assumptions about demand conditions, supply conditions, or industry pricing behavior; or they utilize various data sources, time periods, and assumptions about the proper competitive benchmark. The estimates of average allocative losses due imperfect competition range from 0.2 percent to an impossibly high 289 percent of industry output; consumer losses range from 6.0 percent to 816 percent. However, there is a high degree of congruence in the rankings of economic losses due to market power. Hence, from the perspective of antitrust enforcement, the choice of industry targets has not been greatly altered by advances in estimation techniques.Agribusiness,
Influência do jogo Reversi na memória de trabalho em alunos com diagnóstico de TDAH
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Psicologia.O presente estudo teve por objetivo verificar quais as influências do jogo Reversi na memória de trabalho de alunos com diagnóstico de TDAH. Participaram da pesquisa 4 sujeitos entre 11 e 13 anos. Dois sujeitos eram do sexo masculino, com diagnóstico de Hiperatividade e dois sujeitos do sexo feminino com diagnóstico de Déficit de Atenção. Foram realizados seis encontros sendo o primeiro e o último para a realização da bateria de monitoramento cognitivo Proa. Nos outros encontros foi realizada a prática do jogo Reversi onde foram aferidos os dados referentes a frequencia cardíaca (FC), variabilidade da frequencia cardíaca (VFC) e os comportamentos referentes a prática do jogo: tempo de jogada, tempo de reação, número de sequencias certas, número de sequencias erradas, numero de sequencias mediadas, tempo de interação visual entre o jogador e o mediador e entre o jogador e o tabuleiro. Os resultados apresentaram correlações positivas entre os comportamentos de mediar, número de sequencias erradas e os índices psicofisiológicos de DP RR, rMSSD, pNN50, e BF, indicando um possível esforço mental durante a realização das partidas. Os sujeitos diagnosticados com TDAH do subtipo Desatento apresentaram na bateria de monitoramento Proa uma melhora na tarefa de memória de trabalho entre o pré-teste e o pós-teste. Esse estudo buscou realizar uma relação inicial entre os aspectos psicofisiológicos, comportamentais e cognitivos durante a realização de uma partida do jogo de tabuleiro Reversi.The present study aimed to verify the influences of the game Reversi in working memory of students diagnosed with ADHD. The participants were four subjects between 11 and 13 years. Two subjects were male, diagnosed with hyperactivity and two female subjects with a diagnosis of Attention Deficit. There were six meetings with the first and the last to perform the battery of cognitive monitoring Proa. In other meetings were held to practice the game Reversi where the data were measured the frequency rate (HR), heart rate variability (HRV) and behaviors regarding the practice of the game: play time, reaction time, number of threads right, wrong number of threads, number of sequences mediated, time visual interaction between the player and mediator and between the player and the board. The results showed positive correlations between the behaviors mediate the wrong number of threads and psychophysiological indices of RR SD, rMSSD, pNN50, and LF, indicating a possible mental effort during the course of matches. Subjects diagnosed with ADHD Inattentive subtype present in the battery monitoring Proa an improvement in working memory task between the pretest and posttest. This study tried to do an initial relationship between the psycho-physiological aspects, behavioral, cognitive, during the course of a departure from the board game Reversi
Anomalia dos accruals no mercado brasileiro de capitais
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Produção, Florianópolis, 2010Esta tese analisa a ocorrência do fenômeno conhecido como "anomalia dos accruals" no mercado brasileiro de capitais. A anomalia dos accruals refere-se à obtenção de ganhos anormais com a exploração de uma estratégia de investimento baseada no diferencial de persistência dos componentes do lucro e na associação entre accruals e retornos. O presente estudo é conduzido por três hipóteses: (i) os componentes do lucro têm um diferencial de persistência, sendo que essa persistência é maior para o componente fluxo de caixa em relação ao componente accruals do lucro, (ii) a expectativa de lucros embutida no preço de ações falha em refletir a diferença de persistência dos componentes dos lucros (accruals e fluxo de caixa), (iii) a construção de uma carteira de hedge, tomando uma posição comprada (vendida) em ativos com baixos (altos) accruals gera retornos anormais consistentes. Os dados necessários para a realização do estudo foram obtidos na Economatica e são relativos aos anos de 1990 a 2008 e incluíram os ativos listados na Bolsa de Valores de São Paulo (com exceção das empresas financeiras). Os testes empíricos demandaram a realização de regressões com dados em painel para identificar a persistência do lucro e dos seus componentes; a execução do teste de Mishkin, com o intuito de verificar se o mercado apreça racionalmente o lucro; e a composição da carteira de investimento zero, para analisar se a estratégia de negociação baseada nos accruals proporciona retornos anormais positivos e consistentes. Os resultados indicaram que a persistência dos accruals é menor que a persistência do fluxo de caixa, que o componente accrual não é mal apreçado pelo mercado e que a estratégia de negociação baseada nos accruals não proporciona retornos positivos e consistentes. Apesar das evidências não serem animadoras para o intuito de arbitragem, os resultados demonstraram ser relevantes em diversas perspectivas. A metodologia aplicada permitiu identificar, entre outros aspectos, a qualidade dos lucros e dos seus componentes, a associação entre os componentes do lucro e retornos e a influência da discricionariedade gerencial na rentabilidade futura dos ativos. Portanto, o trabalho abre novas frentes para estudos relacionados à anomalia dos accruals, como a assimetria informacional, a avaliação de ativos e o gerenciamento de resultados.This thesis examines the occurrence of the phenomenon known as "accruals anomaly" in the Brazilian capital market. The accruals anomaly refers to abnormal gains with the operation of an investment strategy based on the differential persistence of earnings components, and the association between accruals and returns. The study is driven by three hypotheses: (i) earnings components have a differential persistence, and the financial component (cash flow) has a persistence greater than the economic component (accruals) (ii) the expectation of earnings built into the stock price fails to reflect the difference in the persistence of earnings components (accruals and cash flow), (iii) the construction of a hedge portfolio, taking a long position in assets with low accruals and short position in assets with high accruals generates consistent abnormal returns. Data were obtained from the provider Economatica for the years 1990 to 2008. All listed assets in Bolsa de Valores de Sao Paulo (apart from financial firms) were included. The empirical tests demanded the execution of regressions with panel data to identify the persistence of earnings, its components and components of accruals; the Mishkin test, in order to check whether the market rationally pricing earnings; and the formation of the zero-investment portfolio to examine whether the trading strategy based on accruals provide positive and consistent abnormal returns. The results indicated that the persistence of accruals is lower than the persistence of cash flow, that the accrual component is not mispriced by the market, and that the trading strategy based on accruals do not provide consistent and positive returns, confirming the third hypothesis. Despite the evidence are not encouraging for the purpose of arbitrage, the results proved to be relevant in different perspectives. The methodology has identified, among other things, the quality of earnings and its components, the association between the components of earnings and returns and the influence of managerial discretion in the future profitability of assets. Therefore, the work opens new horizons for studies related to the accruals anomaly, such as information asymmetry, valuation and earnings management
