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741.
Edivandro C. Conforto Fabian Salum Daniel C. Amaral Sérgio Luis da Silva Luís Fernando Magnanini de Almeida 《Project Management Journal》2014,45(3):21-34
This research paper presents evidence from an exploratory survey on the use of agile project management (APM) practices and the presence of APM enablers in 19 medium‐ and large‐sized companies from different industry sectors considering innovative projects. The results show that these companies are possibly struggling to use their current management practices in the face of different project challenges. Additionally, the presence of some APM enablers indicates opportunities to adapt the APM theory for different companies other than those in software development. Future research should explore the correlation between APM practices and enablers in order to develop “hybrid” management models for different industries. 相似文献
742.
A realistic ARCH process is set up so as to duplicate, for all practical purposes, the properties of stock time series from 1 day to 1 year. The process includes heteroskedasticity with long memory, leverage, fat-tail innovations, relative return, price granularity, and holidays. Its adequacy to describe empirical data is controlled over a broad panel of statistics, including (robust L-statistics) skew, (robust) kurtosis, shape factor for the volatility distribution, and lagged correlations between combinations of return and volatility. These statistics are computed for returns and volatilities with characteristic time intervals ranging from 1 day to 1 year. This wide cross-check between stock time series and simulations ensures that the most important features of the data are correctly captured by the process up to 1 year. The by-products of the statistical analyses and estimations are (1) a positive skew, (2) a cross-sectional relation between kurtosis and heteroskedasticity, (3) a very similar cross-sectional distribution for the statistics evaluated over the empirical data set or for the process with one set of parameters and (4) the heteroskedasticity is very close to an integrated volatility process. 相似文献
743.
In this article we have examined the unemployment rate series in Turkey by using long memory models and in particular employing fractionally integrated techniques. Our results suggest that unemployment in Turkey is highly persistent, with orders of integration equal to or higher than 1 in the majority of the cases. This implies lack of mean reversion and persistence of the shocks. We found evidence in favor of mean reversion in the case of female unemployment and this happens for all the groups of non-agricultural, rural, urban, and youth unemployment series. The possibility of nonlinearities are observed only in the case of female unemployment and the degree of persistence is higher in the cases of female and youth unemployment series. Important policy implications emerge from our empirical results. Thus, for example, positive shocks reducing unemployment will have permanent effects being good for the economy, but negative shocks increasing unemployment will also have permanent effects and strong measures should then be adopted to reduce it. Labor and macroeconomic policies will most likely have long-lasting effects on the unemployment rates. 相似文献
744.
Julio?PindadoEmail author Luis?Rodrigues 《Financial Markets and Portfolio Management》2005,19(4):343-359
This paper provides international evidence on financial distress costs. To achieve this aim, we have developed a model where
financial distress costs are determined, on the one hand, by making use of a more accurate indicator of the probability of
financial distress and, on the other, by a set of variables that, according to financial theory, explain the magnitude of
the costs borne by a firm in the case of financial distress. Our results reveal the relevance of our improved indicator of
the probability of financial distress, since it positively affects financial distress costs in all the countries analyzed.
Furthermore, since our model controls for the probability of financial distress, we can test the trade-off between the benefits
and costs of debt. This allows us to verify that the benefits debt outweigh the costs. Our results also indicate that distress
costs are negatively related to liquid assets; hence, their benefits more than offset their opportunity costs. 相似文献
745.
Empirical Economics - By estimating a flexible nonlinear regression model of savings on an original dataset of service procurements conducted by the Spanish Armed Forces, this paper provides robust... 相似文献
746.
ABSTRACT 1 : Measuring and assessing service quality in the social care sector presents distinct challenges. The ‘experience’ good properties of social care, for instance, and the large influence played by subjective judgements about the quality of personal relationships between carer and user and of process‐related service characteristics make it difficult to develop indicators of service quality, including those of service impact on final outcomes. Using some of the key features of the ‘Production of Welfare’ approach, the paper discusses recent developments in the UK of the theoretical and practical frameworks used for assessing quality in social care and for understanding the final impact of services on the wellbeing of their recipients. Key current and future challenges to the development of such frameworks include difficulties in disentangling the impact of social care services on final outcomes from the often dominating effects of other, non‐service related factors, and the generalization of consumer‐directed care models and of the ‘personalization’ of care services. These challenges are discussed in the context of the different possible applications of quality indicators, including their role as supporting the service commissioning process and their use for assessing the performance of service providers. 相似文献
747.
748.
This paper examines several US monthly financial time series using fractional integration and cointegration techniques. The univariate analysis based on fractional integration aims to determine whether the series are I(1) (in which case markets might be efficient) or alternatively I(d) with \(d < 1\) , which implies mean reversion. The multivariate framework exploiting recent developments in fractional cointegration allows to investigate in greater depth the relationships between financial series. We show that there might exist many (fractionally) cointegrated bivariate relationships among the variables examined, for some of which only standard cointegration tests had previously been carried out. 相似文献
749.
Some of the skills that firms require are obtained only through on-the-job-training. This paper concentrates on the strategic production of skills within the firm. Firms obtain high-quality workers either by training their own (breeding) or by using the open market to bid away workers trained by other firms (raiding). Even when all firms have access to the same technology of production, training, and breeding, it will typically be the case that both breeding and raiding will be pursued, with equal profitability, in equilibrium. Thus, we explain raiding behavior as part of an equilibrium theory. This paper also studies the effect of the decision to train workers on the optimal firm size and the distribution of income. 相似文献
750.
Luis R. Capó 《World development》1983,11(3):217-222
Cuba's experience during the last 20 years is reviewed as far as international procurement and market intelligence are concerned. The steps taken during that period, in order to provide the Cuban people with the most efficacious medicines at the lowest cost are enumerated and analysed. The paper then discusses several aspects of Cuban drug policy: for instance, promoting national production of drugs; converting active ingredients into pharmaceutical forms; promoting research and development and technological innovation; and establishing an adequate infrastracture, including specialized institutional structures, for the evaluation of technology transfer and development in order to meet the demands made by human beings and animals on the pharmaceutical industry. The article also discusses the functions of Medi-Cuba dealing both with foreign commerce and its role as a drug intelligence centre for the pharmaceutical industry and research establishment. 相似文献