去美丽的加州旅行吧!

正说起美国加州,优胜美地(Yosemite)、棕榈泉(Palm Springs)、迪士尼乐园(Disneyland)也许是人们较为熟知的名字。本期,旅居中国的Jeff Gerdes将带领我们感受一个美国人眼中的加州:除了在好莱坞大片中经常出现的金门大桥(Golden     

Neural ranking models for document retrieval

Information Retrieval Journal - Ranking models are the main components of information retrieval systems. Several approaches to ranking are based on traditional machine learning algorithms using a...     

Massive Open Online Courses: designing for the unknown learner

University teachers are faced with a problem of ‘knowing’ their learners when teaching on a Massive Open Online Course (MOOC). This paper explores and analyses what the University of Edinburgh has come to know about its recent MOOC participants, highlighting one particular course. We draw attention to barriers and enablers from co-existent understandings and expectations of course design, and from an abundance of highly qualified participants. We compare characteristics of participants who report a positive experience with those who do not. Mixed messages about teacher presence may have implications that go beyond MOOCs. We contemplate whether the participant group should be seen as a single massive multivocal entity. The paper concludes with a discussion of the potential opportunity for MOOCs to challenge standardization, homogenization and commodification of education. Shifting attention from the achievements of an individual to what can be done with a multitude, MOOCs may open up new educational arenas.     

迈向批判性媒介素养:核心理念、争鸣、组织与政策

美国媒介素养教育并不发达,尤其是批判性媒介素养教育。批判性媒介素养有五个核心概念:非透明性原则、编码与规约、受众解码、内容与讯息、动机。目前,美国已有部分州在其教育标准中列入了媒介素养教育,教师培训却未能跟上,在媒介文化无处不在的情况下,美国需要实现批判性媒介素养的培养,以让学生认识媒介、利用媒介并超越媒介,使个体在社会中更好地发展。     

Third-year College Retention and Transfer: Effects of Academic Performance, Motivation, and Social Connectedness

We studied the effects of academic performance, motivation, and social connectedness on third-year retention, transfer, and dropout behavior. To accommodate the three outcome categories and nesting of data within institutions, we fit a hierarchical multinomial logistic regression path model with first-year academic performance as a mediating effect. Our sample included 6,872 students representing 23 four-year universities and colleges. This work expands the current state of persistence research by (1) considering the effects of motivation and social connectedness on college persistence beyond the first year of college, (2) testing whether the effects of motivation and social connectedness on third-year retention and transfer are direct, indirect, or both, and (3) testing whether the effects of academic performance, motivation, and social connectedness are different for retention and transfer. We found that academic performance has large effects on likelihood of retention and transfer; academic self-discipline, pre-college academic performance, and pre-college educational development have indirect effects on retention and transfer; and college commitment and social connectedness have direct effects on retention. Academic self-discipline led to greater first-year academic performance, which suppressed its effect on retention and transfer. Practical and theoretical implications of these findings and directions for future research are discussed. A previous version of this paper was presented at the 2nd Annual National Symposium on Student Retention, Albuquerque, New Mexico, October 2006.     

Positioning in groups: a new development in systemic consultation

This article describes a new approach, employing a combination of Positioning Theory and Semantic Polarities, that educational psychologists can use to develop and facilitate change in organisations and groups. Resistance to change can be seen as reflecting a lack of the language that the members of an organisation need to participate effectively in the new discourses that are associated with change. Positioning Theory can be used to develop this new language of participation, which can then be used by all in the organisation or group to agree how development can happen and what their contribution to this would be.     

Developing the capacity of farmers to understand and apply seasonal climate forecasts through collaborative learning processes

Purpose: This paper documents and evaluates collaborative learning processes aimed at developing farmer’s knowledge, skills and aspirations to use seasonal climate forecasting (SCF). Methodology: Thirteen workshops conducted in 2012 engaged over 200 stakeholders across Australian sugar production regions. Workshop design promoted participant interaction, stimulated discussion, collected farmer experience of regional climate variability, improved understanding of climate drivers and increased participant skill in interpreting SCF linked to management decisions. Post-workshop surveys collected quantitative and qualitative data for statistical analysis and manual thematic coding. Findings: Over 68% of participants identified improved decision-making and risk reduction as the main benefits of using SCF products. High median self-evaluation ratings for gains in skills, knowledge and understanding of climate forecasts and perceived benefits in using climate forecasts in on-farm decision-making were found across stakeholder groups. No significant differences in self-evaluation rating gains were found between farmers, extension officers and millers, suggesting extension officers are less than optimally informed and skilled to support farmers in understanding and applying SCF. Practical Implications: Developing the capacity of extension officers to understand and interpret SCF may increase adoption of improved climate risk management in farmer networks. Theoretical implications: Collaborative learning activities in the agriculture sector, designed using experiential learning principles and evaluated using a logical framework, provide a robust model for improving the capacity of farmers to manage climate risk. Originality/Value: This paper contributes an example of evaluation of collaborative learning in facilitated agriculture climate risk workshops and discusses the value of learning through small group discussion.     

The DEVELOPMENT OF HUMAN CAPACITY IN MALAWI: THE ROLE OF SCIENCE AND TECHNOLOGY

Faced with accelerating poverty, the Malawi government has re-awakened its commitment to the development of human capacity and the role of development in this context. This paper explores the relationship between development and science and technology. It goes on to review the country’s science and technology needs and how these justify taking developmental action. It concludes that strategies designed to increase access to education should not be limited to the primary sector, but should also include secondary curricula and university science and technology programmes. Drawing on the arguments in the article and personal experience, the authors suggest promoting the development of human capacity in Malawi by creating special “science schools” in the secondary sector and increasing the number of scholarships for university science students.