The Social Embeddedness of Transactions: Evidence from the Residential Real-Estate Industry

Information and communications technologies (ICT) are becoming pervasive in the residential real-estate industry and their usage is affecting the work lives of real-estate agents. Drawing on data from a regional study of the residential real-estate industry in the United States, we focus on the disintermediation or, more accurately, the reintermediation of real-estate agents in the sales process. Using data collected from interviews, direct observation, and archival records, we examine how real-estate agents are (1) taking advantage of new ICT in their work, and (2) protecting themselves from others wishing to displace their position in the real-estate value chain. Our analysis of this activity draws on two contrasting theoretical perspectives to illuminate the roles of residential real-estate agents: transaction cost and social capital. The results of this study provide insights into the ways in which ICT are used to build and draw on the social relationships that underpin the actual transactions, to help guide the process of buying/selling a house, and to invoke expertise as needed.     

Part 10: Teacher Behaviors

Effective teachers place learners’ needs at the center of their efforts and find ways to bridge gaps between learning objectives and students’ prior knowledge and interests. Proven techniques to maximize student learning include encouraging questioning, provoking thought, connecting with students’ interests, expecting engagement, and communicating trust that students can succeed. Findings are presented from research on one-on-one instruction, making clear explanations, and giving effective feedback. The column concludes with guidelines for self-assessing librarians’ teaching effectiveness.     

Partisan Media Selectivity and Partisan Identity Threat: The Role of Social and Geographic Context

There is growing concern about the polarizing impact of citizens primarily choosing sources of political information consistent with their existing partisan perspective. Although research has begun providing answers about the consequences, questions remain about what factors drive such selective use of political media. This study conceptualizes partisanship as a social identity and the decision to selectively use like-minded political media as a method for maintenance of that identity. Using the logic of the reinforcing spirals model (Slater, 2007, 2015), we investigated partisan media selectivity as a response to identity threat. We argue the partisan composition of one’s geographic locale and the presence of partisan difference in one’s interpersonal network are common causes of identity threat, which we predict will be associated with compensatory use of partisan media. Results from national survey data generally provide support for the assertion that greater partisan media selectivity is associated with the presence of various forms of identity threat, especially for strong partisans.     

探素硅谷创新文化的6个奥秘

硅谷不只是地图上的一点,还是象征创新精神的“极客”圣地。硅谷的“创业血液”源于惠普（HP）的位置——帕罗奥图（PaloAlto）。马克·扎克伯格把脸书（Facebook）从他哈佛大学的宿舍搬到硅谷;史蒂夫·乔布斯在这里长大……那么,硅谷缘何取得如此的成功？它怎样运用外在的因素为其所用？请看关于硅谷的6个文化秘密!     

The associations of selected technical parameters with discus throwing performance: A cross-sectional study

The aim of this study was to identify associations between discus throwing performance and the technical parameters of: hip–shoulder and shoulder–arm separation, trunk forward–backward tilt, and throwing-arm elevation angles. Video data of male and female discus throwers' competitive performances were captured during major competitions. Real-life three-dimensional coordinates of 21 body landmarks, and the discus's centre, were obtained for 94 trials using the direct linear transformation procedure. Each technical parameter was reduced at six critical instants. The trend of each parameter across four standards of performance was analysed separately for both sexes. For the female throwers, hip–shoulder and shoulder–arm separations after the flight phase, as well as forward–backward trunk tilts at the beginning and end of the throwing procedure were associated with performance. For male throwers, only the hip–shoulder separation immediately before the flight phase was associated with performance. These findings suggest that the relationships between technical parameters and discus throwing performance are different for males and females. Our results suggest that elite female discus throwers are reliant on effective technique throughout the throwing procedure to achieve long distances, whereas male discus throwers may have a relatively homogeneous technique, and a dependence on physical strength to achieve their long throws.     

Influence of shaft length on golf driving performance

The aim of this study was to determine how shaft length affects golf driving performance. A range of drivers with lengths between 1.168 m and 1.270 m, representing lengths close to the 1.219 m limit imposed by R&;A Rules Limited (2008 R&;A Rules Limited. 2008. Rules of golf, St. Andrews: R&;A Rules Limited, The Royal and Ancient Golf Club of St. Andrews.  [Google Scholar]), were assembled and evaluated. Clubhead and ball launch conditions and drive distance and accuracy were determined for seven category 1 golfers (handicaps 0.21 ± 2.41) who performed shots on a purpose-built practice hole. As shaft length increased from 1.168 m to 1.270 m, initial ball velocity increased (+1.8 m/s, P < 0.01). Ball carry (+4.3 m, P = 0.152) also increased, although not significantly so. Furthermore, as shaft length increased, for all club comparisons there was no decrease in accuracy. Ball launch conditions of spin components and launch angle remained unaffected by shaft length. Launch angle increased (0.8°, F = 1.074, P = 0.362) as driver shaft length increased. Our results show that clubhead and ball velocity together with ball carry tended to increase with no loss of accuracy.     

Achieving both intellectual quality and relevance in classroom learning experiences: some conceptual challenges

The idea that the educational needs of secondary school students are best met by providing them with learning experiences that are both intellectually challenging and connected to the world beyond the classroom underpins several recent pedagogical initiatives in Australia. However, such learning experiences are rarely found in practice. Many reasons for this have already been identified, but we suggest there may be another dimension to this problem. From our experience of trialling a similar pedagogical approach with Years 8 and 10 students, the participating teachers seemed to be struggling with a conceptual dilemma that interfered with creating learning experiences that are both intellectually challenging and relevant. We suggest this dilemma was generated by a dualistic framework of thinking and practice, endemic in education systems, which constructs academic rigour and relevance as incompatible with each other. We conclude that there is a need for more extensive teacher professional development in pedagogies which attempt to integrate intellectual rigour and relevance.