Centrality of enactive experiences,framing, and motivation to student teachers’ emerging professional identity

Professional identity has emerged as a common theme in teacher development research, and the student-teaching practicum is often identified as foundational to identity development. In the context of the student-teaching practicum, interactions with cooperating teachers and pupils are believed to comprise the press for professional identity development, though theory-based explanations are often neglected in the literature, and findings are not always consistent. To address this issue, we used grounded theory to articulate a model explaining the relations among three constructs important to the process of identity development of student teachers (n = 14). Our findings are organized around a model that highlights the phenomenon of “negotiating who I am as a teacher,” which helps us describe differences between student teachers who changed identity vs. those that did not, and psychological and contextual reasons for renegotiation of identity. Discussion focuses on comparisons with previous models and possible implications for teacher education.     

Goal orientation towards teaching (GOTT) scale

Goal orientation theory has been widely investigated and found to affect many motivation and behavior variables in relation to student learning and work performance. However, unlike the motivational construct of self-efficacy, researchers have yet to investigate whether this theory can be applied to the field of teaching and contribute to the explanation for trends in instructional behavior and motives. The purpose of the present study was to develop an instrument to begin the exploration of teachers’ goal orientation towards teaching. From a three-phase research design consisting of scale development, score validation, and convergent/discriminant validation, results provided support for the development of, and validity of scores on, a Goal Orientation towards Teaching (GOTT) Scale. Although further validation is needed, future researchers and practitioners can use the GOTT scale to investigate how teachers’ goal orientation towards teaching can impact student learning, teaching effectiveness, pedagogical learning, and even professional morale.     

让MOOCs更有意义:在谎言、悖论和可能性的迷宫中沉思

大规模开放网络课程(MOOCs)是一种以开放访问和大规模参与为目的的在线课程。MOOCs作为一种新的教育技术,包括cMOOCs和xMOOCs两种,前者以联通主义理论为基础,强调知识创新与生成;后者以行为主义理论为基础,关注知识重复。两者在教学理念上差异很大,用同一术语表述很容易使人混淆。同以往各种形式的信息技术一样,MOOCs在本质上是一系列操作符号的工具,同时也是基于互联网的低成本教育材料分发和共享的工具,因此在对待MOOCs变革传统高等教育这一问题上应该理性。目前媒体、商业集团和高校机构对xMOOCs的关注处于一种狂热状态,缺乏系统而理性的学术研究,主要体现出四个谎言和悖论:一是学校品牌是教学质量的象征,而实际上它们的声誉是由其研究赢得的,并非教学质量,xMOOCs的低完成率为传统高校所不齿;二是多数xMOOCs机构对成功通过课程考试的学生只提供证书,不生成学分,对比传统学校教育,意味着对学生学业的认证取决于招生而不是课程学习;三是xMOOCs是一种新的教学法并支持个性化学习,而实际上他们采用的是一种过时的行为主义教学法;四是xMOOCs一方面期望和推崇"让知识成为人类共同财产"的理想,却又一方面在积极探索能够盈利的商业模式。MOOCs在炒作背后应该回归理性的发展轨迹,其对传统教育的真正变革应该是将xMOOCs置于全世界公众的视野中,迫使这些机构重视教学和教学法,并将教学作为其核心使命。     

Universal service in a participatory democracy: A perspective from Australia

This article places universal service policy in telecommunications in Australia in an historical context. Given the dynamic growth in information technologies, universal service should be reconceptualized within a knowledge-based discourse critically linked to considerations for deepening participatory democracy. As a consequence of the discussion this article recommends that funding universal service obligations in telecommunications be based on the preferred notion of a maximally open democratic debate. The universal service obligation in telecommunications should be funded from consolidated revenue with its parameters set by democratic debate.     

挑选高等教育杰作

本文对《美国高等教育经典著作百种》的选编特点、主要类别与部分著作及其作者作了简明扼要的说明。     

Design and testing of a frictionless mechanical inerter device using living-hinges

In this paper a novel type of frictionless mechanical inerter device is presented, where instead of gears, motion of the flywheel is achieved using living-hinges. The design is a type of pivoted flywheel inerter inspired in part by the Dynamic Anti-resonant Vibration Isolator (DAVI) concept, which was first developed in the 1960s. Unlike the DAVI, it will be shown that the pivoted flywheel inerter has the advantage of producing balanced forces. Furthermore the use of living-hinges eliminates the need for gears or other frictional elements in the inerter mechanism. To demonstrate the utility of the new concept, a bench-top experiment was performed using a small-scale living-hinge inerter manufactured using polypropylene hinges. By estimating the experimental system parameters, the transmissibility results from the experiment could be compared to a mathematical model. These results showed that the living-hinge inerter provided an isolation effect of at least three orders of magnitude in terms of the maximum amplitude reduction from the uncontrolled system compared to that with the inerter added. Although friction was eliminated, the living-hinges did introduce additional damping, and this was found to correspond to an increase in the equivalent damping ratio for the uncontrolled system of 1.2%. It is shown that the living-hinge inerter developed in this paper fits all of the essential conditions required to be a practical inerter device. Furthermore, as it operates without mechanical friction, or fluid flow, it represents a new paradigm in experimental inerter technology.     

Institutional complementarities: The origins of experimentation in China’s plug-in electric vehicle industry

A vast literature on technology transitions within industries suggests that early phases of new technologies are marked by periods of intense experimentation, but we know little about the conditions under which these periods emerge. We apply inductive, grounded theory-building techniques to examine what prompts firms to experiment across one emerging technology platform—plug-in electric vehicles (PEVs)—in China. Triangulating annual vehicle make and model sales data from 2003 to 2016 (plus monthly data from 2010 to 2016); 112 English and Mandarin archival documents from industry, academic, and news outlets; and 51 semi-structured interviews with industry, government, and academic stakeholders, we develop four in-depth case studies. We find that in contrast to the innovation trajectories of multinational and Chinese arms of joint venture (JV) firms, independent domestic Chinese firms (those with no history of international JV partnerships) are undertaking significant experimentation across multiple levels—infrastructure, core system, subsystem, and component—of the emerging PEV technology platform. We propose the concept of “institutional complementarities” to describe how interactions among institutions—here the national JV regulation and local market support and subsidies—may have turned regional markets into protected laboratories, extending the incubation periods for independent domestic firm experimentation. While this diverse experimentation may be an important antecedent of technology transition, consolidation induced by national policy standardization or competitive pressure may be required for PEV innovations to scale beyond their early, protected regional markets.     

Pathogenic organization in science: Division of labor and retractions

Science is increasingly a team activity, and the size of the teams has been growing. At the same time, there are concerns about an increasing rate of pathologies in science. The growth of team science suggests the need to look beyond individual-level explanations and focus on organizational structures and institutional contexts to explain pathologies in science. Drawing on the literature on organizational pathologies, we argue that division of labor may be a key factor contributing to pathologies in science. Furthermore, we examine the effects of high-stakes incentives and of institutional corruption as additional predictors of scientific pathologies. Using retractions as an indicator of pathologies, and drawing on a matched sample of 195 retracted papers and 349 paired papers that were not retracted, we develop indicators of the division of labor in the team that produced a paper and find that the rate of retractions is higher as the division of labor increases (net of team size). Additionally, we find that high-stakes incentives and institutional corruption are also associated with increased retractions. We conclude with a discussion of the implications of these findings for science policy, in particular for organizing team science projects.