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Quality & Quantity - The study based on an online survey covering 655 researchers from hard and soft sciences addresses the influence of different conditions on academic publishing. Results...     

浅析加气混凝土砌块施工质量控制措施

本文结合笔者多年从事工程管理的实践经验,对目前加气混凝土砌块施工中出现的质量问题进行了分析,并就此针对性的提出了一些控制措施,谨供大家作参考之用。     

On the Effects of Capital Markets’ Regulation on Price Informativeness: an Assessment of EU Market Abuse Directive

Financial Markets and Portfolio Management - This study assesses the impact on price informativeness of the market abuse directive adopted by European economic area member-states. Price...     

Is this workplace bullying? How ideas about conflict shape conflict management strategies

The adoption of specific conflict management strategies has usually been linked to various factors, such as litigation avoidance, union substitution and the pursuit of strategic benefits. This study advances the hypothesis that actors’ different frames of reference impact how workplace conflicts are interpreted and managed by unions and employers. Drawing on original data from the Brazilian banking sector, this article shows that companies and unions have different interpretations of workplace bullying. Unions understand workplace bullying as an organizational or sectoral problem inherent to labour relations in the banking sector. In contrast, employers see workplace bullying as a problem caused by individual managers. These different understandings of the same type of conflict are shaped by each actor's frame of reference and influence their responses to workplace bullying. With a pluralist or critical frame of reference, unions favour conflict management tools that try to promote structural changes in the sector. With a unitarist frame of reference, employers try to transform individual behaviour or simply remove individual managers from the workplace. Therefore, organizations with a unitarist frame interpret and respond to conflicts in notably different ways from organizations holding a pluralist or critical frame of reference.     

Probability distributions and leveraged trading strategies: an application of Gaussian mixture models to the Morgan Stanley Technology Index Tracking Fund

The purpose of this paper is twofold. Firstly, to assess the merit of estimating probability density functions rather than level or direction forecasts for one-day-ahead forecasts of the Morgan Stanley Technology Index Tracking Fund (MTK). This is implemented using a Gaussian mixture model neural network, benchmarking the results against standard forecasting models, namely a naïve model, a moving average convergence divergence technical model (MACD), an autoregressive moving average model (ARMA), a logistic regression model (LOGIT) and a multi-layer perceptron network (MLP). Secondly, we examine the possibilities of improving the trading performance of those models with confirmation filters and leverage. While the two network models outperform all of the benchmark models, the Gaussian mixture model does best: it is worth noting that it does well on a time series where the training period is showing a strong uptrend while the out-of-sample period is characterized by a downtrend.     

Correlation dynamics of global industry portfolios

This paper investigates the time series of realized correlations between global industries and the world market over the 1979–2008 period. The behavior of industry correlations is characterized by long-term swings, with a period of historically low correlations in the late 1990s. The Telecommunications and the Financials industries show a positive secular trend. Global industry correlations move countercyclically. Furthermore, there is evidence that industry correlations are higher for market downside moves than for upside moves.     

Cross‐border information transfers: Evidence from profit warnings issued by European firms

This paper reports evidence on cross‐border accounting information transfers associated with profit warning announcements. Using a sample of firms from 29 European countries, we find that negative earnings surprises disclosed by firms in one country affect investors’ perceptions of comparable non‐announcing firms in other countries. The form and magnitude of cross‐border effects is consistent with domestic transfers. Tests explaining variation in cross‐border information transfers provide some (albeit rather limited) evidence that effects vary according to a range of firm‐, industryand country‐level characteristics.     

Propuesta de un índice para evaluar la gestión del control interno

Derived from its humanitarian mission, to pay quality health care to the population, in hospitals and health facilities is needed reduce the occurrence of events that may threaten the physical and psychological integrity of the patients they serve. One of the strategies to consider to overcome this challenge is the proper implementation of the internal control system, to ensure the sustainability of insurers, by increasing efficiency in the care of people, feasible only within a care model that quantifies and management on population identified and addressed. The objective of this paper was to propose a coefficient to evaluate the internal control management for a hospital entity. This was conceived under the guidelines of the multi-criteria modeling in conjunction with the detection of critical points through Petri nets. For this, the order of importance and fulfillment of the components of Internal Control and in unison the unreliability of critical processes in the entity being identified practical application was determined.     

Will Order Imbalances Predict Stock Returns in Extreme Market Situations? Evidence from China

This article examines the relation between order imbalances and stock returns in China during the extreme market situations in 2007 and 2008. We find that order imbalances are positively and significantly related to contemporaneous stock returns but have limited predictability for subsequent returns in extreme market situations. Moreover, order imbalances significantly predict returns in normal market environment, especially for small stocks. This may be attributed to the investor structure in the Chinese market. A trading strategy utilizing the relation between order imbalances and stock returns generates positive returns. Overall, the information contents of order imbalances vary with the market environment.