OSGi及其QoS获益驱动动态软件体系结构研究

随着软件领域中移动计算、分布计算和Web Service等技术的迅速发展,软件计算环境变得越来越开放、复杂、多元。如何应对不断变化的计算环境,构建一个自适应的动态软件架构,受到了越来越多的关注。文章首先介绍一个成功的软件系统结构框架实例——Open Service Gateway Initiative(OSGi)。然后,以请求质量QoS为核心,对面向服务的OSGi框架进行扩展,提出了一个动态自适应软件架构解决方案,它以用户QoS属性为目标驱动,通过动态调整软件自身结构,以进一步提高用户期望的服务质量。实验结果证明了该调度框架的有效性。     

Factors contributing to business actions in response to climate change in Korea

Climate change is a growing problem and has been highlighted as a global issue. Empirical evidence increasingly indicates its obvious potential risks to humans and society. As members of this society, business organizations face greatly diverse climate change-related risks that they must recognize and respond to. However, gaps exist between scientific evidence and the actions of business organizations. Few empirical studies have examined the business organizations’ actions taken in response to climate change in Korea. This paper addresses this critical gap in the climate change literature by examining business organizations’ behaviors and identifying the factors influencing their actions. We employ statistical models to compare corporate climate change actions, and we explain their variations using survey data. The results indicate that despite increasing concerns about climate change, businesses have implemented very limited precautionary mitigation and adaptation actions. In addition, the concerns of the businesses about future climate change impact, organizational capacity (leadership, staff capacity, existence of a relevant division or department), and business size are significant factors with respect to the implementation of climate change actions.     

Mainstreaming sustainable adaptation to climate change into municipal planning: An analysis from the Eastern Cape,South Africa

Municipalities are well positioned to support adaptation of vulnerable people to climate change; however, they seldom integrate climate change into their planning for social development. The building of adaptive capacity for sustainable adaptation requires that municipalities understand and mainstream climate change into their plans, and develop context-specific adaptation strategies that address existing social development issues. A desktop analysis was conducted to compare the planning landscape in six District Municipalities in the Eastern Cape, South Africa, focusing on Municipal Integrated Development Plans (IDPs). A scoring system was developed for comparing the IDPs of the municipalities, based on levels of context-specific information about climate change, mainstreaming of climate change with other development concerns, and vertical integration across district and local municipalities, amongst other themes. Overall, the mainstreaming of climate change in municipal IDPs in the Eastern Cape remains weak, and requires critical attention if sustainable adaptation is to be achieved.     

Framing the UK’s counter-terrorism policy within the context of a wicked problem

Terrorist attacks can be seen as the ultimate wicked problem. After 9/11, terrorists moved from so-called ‘spectacular’ events to relatively low-intensity attacks against individuals and groups. The emergence of what has become known as the ‘home-grown’ terrorist has added a further dimension to the ‘wicked’ nature of the problem. This paper considers the UK’s CONTEST and PREVENT strategies as a policy response to the threats from terrorism and the impact that the policies themselves can have on the radicalization of individuals. The author highlights some of the limitations of the PREVENT strand of the overall strategy and the constraints that are imposed on government policies by failing to take a holistic perspective on the nature of the problem.     

OCB and external–internal social networks: effects on individual performance and adaptation to change

In this study, we develop and test a model that links one's internal and external social network structures to his or her willingness and ability to adapt in a changing work context. Using a survey data from 371 employees working in 133 different branches of a large financial firm, we find that individual behaviors that explain task performance and individual adaptation to change are affected by a number of supportive social ties (size of the support network) with which one receives support inside and, mostly, outside the workplace. The results also show that individual performance and adaptation to change are affected by the level of workers' organizational citizenship behavior. We also identify a mediating effect exerted by the informational network structure (mostly an internal network) on the relationship between the support network (mostly an external network) and individual task performance.     

Adaptation and inertia in dynamic environments

Research summary : We address conflicting claims and mixed empirical findings about adaptation as a response to increased environmental dynamism. We disentangle distinct dimensions of environmental dynamism—the direction, magnitude, and frequency of change—and identify how selection shapes adaptive responses to these dimensions. Our results show how frequent directional changes undermine the value of exploration and decisively shift performance advantages to inert organizations that restrict exploration. In contrast, increased environmental variance rewards exploration. Our results also show that, in dynamic environments, the best‐performing organizations are generally more inert than less successful organizations. Managerial summary : Our research helps managers to understand under what business conditions investments into exploration and strategic flexibility are more likely to pay off. Dynamic business environments characterized by persistent trends and by large, infrequently occurring structural shocks reward strategic pursuit of temporary advantage. Thus, exploration and strategic flexibility are preferred strategies. In contrast, the challenge in frequently changing environments with fleeting opportunities is to identify and to focus on strategic actions whose payoffs on average are high, independent of environmental volatility. Low levels of exploration and long‐term strategic focus are preferred strategies in these circumstances. Copyright © 2015 John Wiley & Sons, Ltd.     

Cognition,Social Impulse,and the Principle of Adaptation: Insights into the Peirce-Veblen Connection

This article seeks to offer insights into the connections between Charles S. Peirce and Thorstein B. Veblen regarding their understanding of the logic of scientific thought and cognition. In this sense, this work explores how both Veblen and Peirce dismissed the Cartesian notion of unmediated cognition and how they sought to depict cognition as a process. Furthermore, this article presents Peirce’s concept of “social impulse” and Veblen’s “principle of adaptation” as complementary perspectives on science and cognition that have strong evolutionary content.     

全球气候变化对海岛旅游地的影响与启示

气候既是海岛旅游业发展的自然条件,又是主要的资源,全球气候的异常变化影响海岛旅游资源的数量与质量、客流的空间与季节移动,并导致传统海岛旅游目的地的萎缩。全球气候变化对我国海岛旅游业的影响日益显著,必须及时调整海岛旅游发展的对策：大力发展生态旅游、可持续旅游;探究旅游者对气候变化的适应;改善海岛旅游目的地服务设施;重新进行海岛旅游规划;重视旅游主体人群的教育,以适应全球气候变化带来的巨大影响。     

MACROECONOMIC PERFORMANCE AND INEQUALITY: BRAZIL, 1983–94

We examine how poor macroeconomic performance, mainly in terms of high rates of inflation, affected earnings inequality in the 1980s and early 1990s in Brazil. The results, based initially on aggregate time series, and then on sub‐national panel time‐series data and analysis, show that the extreme inflation, combined with an imperfect process of financial adaptation and incomplete indexation coverage, had a regressive and significant impact on inequality. The implication of the results is that sound macroeconomic policies, which keep inflation low and stable in the long run, should be a necessary first step of any policy package implemented to alleviate inequality in Brazil.     

城市化进程中失地农民职业适应的社会学分析

文章从社会学的角度分析了失地农民职业适应的内涵、影响因素及其路径。失地农民职业适应包括职业技能适应、职业规范适应、职业人际适应和职业心理适应四个维度。现代教育不足、社会保障缺失和社会排斥是影响失地农民职业适应的主要因素。因此,应为失地农民创造良好的就业环境,提供职业技能培训和以劳动法为主的法律培训,并建立健全失地农民社会保障制度。