高校贫困生学习动机的调适策略

本研究采用问卷调查的研究方法，以南京市四所高校学生作为调查对象进行研究。研究结果表明，未来发展和社会报答动机是贫困生最强烈的学习动机；父母的职业和文化程度对学习动机有一定的影响。根据调查结果分析，得出了影响高校贫困生学习动机的原因以及不同专业、性别、家境的学生学习动机的差异。通过原因分析，从政策、心理、经济、差异源等层面提出了调适高校贫困生学习动机的策略。     

基于元认知理论的大学英语网络自主学习探讨

文章以元认知理论和自主学习理论为基础,以计算机网络环境下的大学生为研究对象,对元认知和大学生英语网络自主学习的几个要素进行了研究。探讨了新的教学模式中,学生自主学习元认知能力的培养。并就如何充分发挥网络环境下的优势、调动积极要素、提高教学效果提出了个人见解。     

Clustering and combinatorial optimization in recursive supervised learning

The use of combinations of weak learners to learn a dataset has been shown to be better than the use of a single strong learner. In fact, the idea is so successful that boosting, an algorithm combining several weak learners for supervised learning, has been considered to be the best off the shelf classifier. However, some problems still exist, including determining the optimal number of weak learners and the over fitting of data. In an earlier work, we developed the RPHP algorithm which solves both these problems by using a combination of global search, weak learning and pattern distribution. In this chapter, we revise the global search component by replacing it with a cluster based combinatorial optimization. Patterns are clustered according to the output space of the problem, i.e., natural clusters are formed based on patterns belonging to each class. A combinatorial optimization problem is therefore created, which is solved using evolutionary algorithms. The evolutionary algorithms identify the “easy” and the “difficult” clusters in the system. The removal of the easy patterns then gives way to the focused learning of the more complicated patterns. The problem therefore becomes recursively simpler. Over fitting is overcome by using a set of validation patterns along with a pattern distributor. An algorithm is also proposed to use the pattern distributor to determine the optimal number of recursions and hence the optimal number of weak learners for the problem. Empirical studies show generally good performance when compared to other state of the art methods.     

Organizational contingencies,organizational blogs and public relations practitioner stance toward publics

Public relations practitioners in this study who perceived social media (e.g., blogs) to be a normal part of their organization's day-to-day communication were less likely to choose an accommodating stance toward a key public than practitioners in “low-tech” conditions. Forty-three practitioners with a mean of 14.5 years professional experience participated in a 2 × 2 (contingencies for dialogue × technological orientation of organization) experiment. The data reveal a disconnect between the potential relational benefits of social media and the stance public relations practitioners in this study chose when social media were introduced as a regular part of their working environment.     

Trust in surveys and games – A methodological contribution on the influence of money and location

This paper explores methods to study trust. In a variety of settings, answers to survey questions and choices in a trust game are obtained from student sample pools. Some subjects are approached by mail and execute their task at home whereas others participate in classroom experiments. No differences between the results obtained by these methods are observed. Furthermore, one additional group plays the trust game with purely hypothetical payments, and another receives random lottery payments. This changes trust behavior dramatically, whereas trustworthiness is unaffected. Subjects without any financial incentives exhibit less trust and their trust choices are significantly correlated with survey trust answers. There is no such correlation for the corresponding choices with real payments.     

Exposure to occupational violence and the buffering effects of intra-oranizational support

This paper presents a conceptually distinct analysis of the data first reported by Leather et al. Specifically, it investigates the effects of exposure to a variety of forms of work-related violence upon work attitudes and general well-being within a sample of UK public house licensees—individuals who manage public houses and hold the licence permitting the sale of alcoholic drinks on the premises. In addition, it examines the role of social support in moderating such effects. Based upon a sample of 242 licensees, it reports a consistent interaction between exposure to such violence and the availability of perceived intra-organizational support in determining the size of any negative effects upon individual well-being, job satisfaction and organizational commitment. It is argued that exposure to all forms of work-related violence, including intimidation, verbal abuse and threat, should be seen as a potential stressor within the work environment, the negative effects of which are buffered by perceived support from within the organization, but not by that perceived to be available from informal sources such as family and friends.     

Coming of age

Those of us who study aging have the unique opportunity to live their subject matter. Whether we learn any personal lessons is a matter of our own reflectivity, but personal experience can make us far better scholars than can scholarship alone. As one ponders the life course, it is clear that a number of institutional influences, temporal patterning, and unexpected intervening variables are involved in the unfolding of one's life. Life-long institutional memberships furnish social capital that helps establish parameters for our personal experience, for how we view our personal trajectories and for our ability to cope with the aging process itself. But how to come to terms with unexpected occurrences that alter the anticipated futures we had in mind? Do our scholarly efforts and our experience come together in ways that enrich one or the other? These are the questions I explore in this personal essay.     

Place making,grassroots organizing,and rural protest: A case study of Anahim Lake,British Columbia

Contemporary rural social movements bring diverse interest groups and stakeholders together at the local scale in the pursuit of common visions and goals, often against the backdrop of an external threat. The challenge for a movement's leaders is to negotiate and design a rural agenda that resonates with this complex constituency. One way to approach this problem is to construct and politicize a local sense of place as a means of rallying insiders against outside forces and pressures. This article explores the place-making activities of rural leaders operating within a complex social setting through an analysis of a grassroots social movement in Anahim Lake, British Columbia. The study uses the concept of the “place frame” to explore how Anahim's activists created a local discursive framework that enabled them to bridge dissimilar environmental values and practices within the community. The removal of external pressures following protest, however, saw the dissolution of this alignment. In documenting this process, the article contributes to a fuller understanding of the significance of place in grassroots protest and activism.     

Dangerous liaison or perfect match?: Public relations and social marketing

This paper considers a possible match between public relations and social marketing. It positions interchanges between the two as the strongest and most desirable partnership possibility for public relations with any aspect of the overall field of marketing. Working from definitions of social marketing as a profession and academic discipline, it reviews approaches, including textbooks, from the two disciplines in order to compare and contrast their strengths and weaknesses, to examine their perceptions of each other, and to identify the opportunities and challenges that social marketing represents for public relations. The paper also looks at what social marketing might learn from public relations. It concludes that public relations should look at improving the relationship as a matter of urgency in order to augment professional practices; to open up employment opportunities in an expanding market for social marketing expertise; and to improve the social reputation of public relations.     

郭雍易学思想述评——《易》言三才之道

郭雍是宋代义理易学的代表人物之一,其核心的思想是“《易》言三才之道”。他将“三才之道”贯穿到天人起源、《周易》创作、本体衍化、卦爻交感等易学解释体系的各个层面,在易学史上有一定的影响。