团队氛围、董事会内部沟通与战略绩效

本文在理论分析的基础上提出研究假设,通过问卷调查的方式搜集数据,以47家企业董事会454份有效问卷为样本进行实证研究,结果表明,团队氛围中的团队信任对董事会内部沟通具有显著的正向影响;团队氛围中的情感冲突对董事会内部沟通具有显著的负向影响;董事会内部沟通对企业战略绩效中的团队学习力、决策有效性和战略一致性均具有显著的正向影响。研究不仅丰富了董事会团队过程理论,而且能够有效地指导公司治理实践。     

连锁经营管理专业“四段一体”式人才培养方案的探讨

我国连锁经营近几年发展非常迅速,对连锁经营管理的人才需求量日益剧增,高校为此开设了连锁经营管理专业,但是该专业对人才的培养还是处于摸索阶段。本文通过对连锁经营管理专业现状的分析,提出基于工学交替的四段一体式人才培养方案;从基础理论学习、职业技能训练、理论提升与拓展、毕业顶岗实习为阶段,对以市场需求为导向,采用专业基础课与专业课融于一体、理论与实践融于一体,实践强于理论,滚动式前进、螺旋式提高的分段渐进式教学体系进行分析,并提出了相关的建议。     

Efficient learning via simulation: A marginalized resample-move approach

In state–space models, parameter learning is practically difficult and is still an open issue. This paper proposes an efficient simulation-based parameter learning method. First, the approach breaks up the interdependence of the hidden states and the static parameters by marginalizing out the states using a particle filter. Second, it applies a Bayesian resample-move approach to this marginalized system. The methodology is generic and needs little design effort. Different from batch estimation methods, it provides posterior quantities necessary for full sequential inference and recursive model monitoring. The algorithm is implemented both on simulated data in a linear Gaussian model for illustration and comparison and on real data in a Lévy jump stochastic volatility model and a structural credit risk model.     

An exploratory review of the relationship between enterprise training and technology upgrading: evidence from South African manufacturing firms

The study examines the extent to which disaggregated training variables are related to technological upgrading, in the context of a middle-income developing country trying to manage its integration into the global economy. For a developing country, successful integration into the global economy requires that local manufacturing firms are able to competitively restructure, as a precondition for survival and long-term growth. Consequently, skills and technological upgrading are crucial in raising the international competitive advantage of local firms. Enterprise-provided training is one means that can be used by local firms to continuously upgrade their knowledge bases, increase their international competitiveness, and enhance employment growth over time. This paper uses South Africa as a case study, to demonstrate how economic reform measures can expose skills deficiencies in the manufacturing sector and lead to an increase in capital intensity of the sector. Exposure of skills deficiencies, in turn, raises the importance of skill-upgrading through schooling and training of existing workforce. Despite a couple of studies on the evolution of the labour market in South Africa, no previous research has explicitly examined the relationship between technological upgrading and disaggregated training/learning variables at the firm level. This paper aims to fill that gap by focusing on disaggregated enterprise-based training efforts. The study uses the Human Capital theoretical framework to answer the main research question: Which disaggregated learning variables (i.e., on-the-job or off-the-job training offered to different occupational groups) are significantly associated with technological upgrading? The study raises possible issues of heterogeneity in returns to training offered to different occupational groups in the context of technological-upgrading. On the other hand, technological upgrading may not necessarily always disadvantage all unskilled workers. Possible policy implications of research findings are outlined.     

Role and impact of the environment on entrepreneurial learning

Abstract

This article is presenting an overview of the literature devoted to entrepreneurial learning and, more specifically, those research bringing environmental elements into the study of the entrepreneurial learning process. Then, it shows how each of the four Special Issue selected research papers contribute to enhancing our knowledge of the complexity of the learning process vis-à-vis entrepreneurial processes placed in context. By doing this, it makes an attempt to explain the specific context behind each contribution as well as presenting the wider context. Finally, the article is suggesting a set of key challenges and research pathways that might be explored in the future.     

终身学习视角下公共图书馆的转型与发展思考

公共图书馆作为公共文化服务体系的重要组成部分,在构建学习型社会的大背景下,为促进终身学习的理念,借鉴国外图书馆的前沿探索,提升人文素质和知识内涵,实现公共图书馆在新的历史形势下自身的转型与发展。     

基于工作过程的高职院校《平面设计》课程学习情境设计探讨

文章以对基于工作过程的《平面设计》课程学习情境进行分析,论述了《平面设计》课程学习情境设计的重要性及具体的学习情境设计,并提出了实施建议和今后任务,充分展现教学过程的实践性、开放性和职业性,努力实现理论和实践的有机结合。     

论电脑学习语言的优势与局限

spects.     

Classification of intraday S&P500 returns with a Random Forest

Stock markets can be interpreted to a certain extent as prediction markets, since they can incorporate and represent the different opinions of investors who disagree on the implications of the available information on past and expected events and trade on their beliefs in order to achieve profits. Many forecast models have been developed for predicting the future state of stock markets, with the aim of using this knowledge in a trading strategy. This paper interprets the classification of the S&P500 open-to-close returns as a four-class problem. We compare four trading strategies based on a random forest classifier to a buy-and-hold strategy. The results show that predicting the classes with higher absolute returns, ‘strong positive’ and ‘strong negative’, contributed the most to the trading strategies on average. This finding can help shed light on the way in which using additional event outcomes for the classification beyond a simple upward or downward movement can potentially improve a trading strategy.