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91.
We investigate in the context of crowdsourcing how seekers can increase open innovation performance, measured as received solver attention, by making two strategic decisions: selecting innovation tasks that are well suited for crowdsourcing and choosing between the potentials of status signalling through identity disclosure versus enjoying the benefits of anonymity. Drawing on uncertainty reduction theory, we suggest that a well-articulated problem statement reduces uncertainties of potential solvers and increases their willingness to participate. We argue that the ability of seekers to draft high-quality problem statements depends on the distance between the problem domain and their current knowledge stock. An analysis of 637 crowdsourcing projects finds that problem-seeker knowledge distance and received solver attention are curvilinear related such that moderate levels of knowledge distance maximize solver participation. However, high-status seekers who engage in identity-based status signalling are able to benefit from crowdsourcing across all levels of problem-seeker knowledge distance. 相似文献
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93.
John Loewenthal Patrick Alexander Graham Butt 《International Studies in Sociology of Education》2019,28(3-4):345-361
ABSTRACTThis article presents ethnographic research on the aspirations of graduates from a private university in New York City, some of whom move to Los Angeles. Findings depict financial and family pressures exerting a governing force upon the graduates’ futures, often beyond their control. Focusing on the narratives of four individuals, we introduce the language of fate as a means of conceptualising the potential repercussions of aspiration and Higher Education. The premise of both is an increased determinacy over one’s future, yet in the high-stakes U.S. context here examined, this financial investment and articulation of family hope may generate fated (seemingly inescapable) and/or fateful (ominous) outcomes. The dynamic of ‘cruel optimism’ illustrates some of the paradoxical consequences of Higher Education, whereby people may be punished by their aspirations. We discuss what factors affect differing outlooks on the future and imply alternative dimensions to adversity beyond the remit of ‘inequality’. 相似文献
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95.
Evaluating multigrade school reform in Latin America 总被引:1,自引:0,他引:1
Patrick J. McEwan 《比较教育学》2008,44(4):465-483
This paper describes three multigrade school reforms in Latin America: (1) Colombia’s Escuela Nueva, (2) Guatemala’s Nueva Escuela Unitaria, and (3) Chile’s MECE‐Rural. Each reform endowed primary teachers and students with special training and instructional materials, and encouraged new kinds of instruction in rural classrooms, with the goal of improving student learning. The paper discusses the challenges to evaluating school reforms in a rural context. It then reviews the international literature on each reform, assessing whether reforms were effectively implemented and whether they caused improvement in student outcomes. Even in the best cases, multigrade schools were not fully implemented. There is consistent evidence of positive effects on student achievement. Yet, the causal interpretation of evaluation findings is severely limited, especially in Guatemala and Chile. It concludes with suggestions for improving multigrade evaluations. 相似文献
96.
在西班牙占领本地之前,口头文学和图画文字是那哇特尔人表现、保留和传承其文化传统的有效工具.任何一篇文字的内容,都可以通过口述或者看图说话的方式来表达.这两种方式的表现力都远远地超过了言语本身,因为词语的"文本"在口头演出当中通过声音、手势、舞蹈、音乐、节奏、多彩的象形文字、特定的时空氛围而被"具体化"了.同样,书写的文本也因文字画、意符、音符以及颜色、形状、大小、位置、间隔关系、笔势以及图纹的双层影像等而被"具像化"了.尽管古抄本中的图画主要是被设计来"看"而不是(西方人观念中的)读的,很可能有与之相配的口述文本同时存在,它们从图像中生发而出,或者作为图本的补充存在.文章将涉及以下一些问题:第一,在前西班牙时代.人们是如何来"阅读"、也就是符号性地解释一个图画文本的?第二,图形比喻怎样触发口头表演?第三,口头演出如何"扎根"于图画?第四,言语的独白或对话在看图说话时如何得以运用或被参照?全部分析以那哇特尔(nahuatl)印地安人的手抄本和由西班牙人及其印地安助手们(根据当地土著的口述)所搜集和记录下的那哇特语文献为基础. 相似文献
97.
Patrick T. Davies Morgan J. Thompson Meredith J. Martin E. Mark Cummings 《Child development》2021,92(3):1154-1172
This study examined whether childhood interparental conflict moderated the mediational pathway involving adolescent exposure to interparental conflict, their negative emotional reactivity to family conflict, and their psychological problems in a sample of 235 children (Mage = 6 years). Significant moderated-mediation findings indicated that the mediational path among Wave 4 interparental conflict during adolescence, change in youth negative reactivity (Waves 4–5), and their psychological problems (Waves 4–6) was significant for teens who experienced low, rather than high, levels of childhood interparental conflict (Waves 1–3). Supporting the stress sensitization model, analyses showed that adolescents exposed to high interparental conflict during childhood evidenced greater increases in negative reactivity than their peers when recent parental conflicts were mild. 相似文献
98.
Peffer Melanie E. Renken Maggie Enderle Patrick Cohen Jonathan 《Research in Science Education》2021,51(5):1365-1389
Research in Science Education - Young children can struggle to learn difficult disciplinary content and important skills for practicing science. Problem-based learning (PBL) may be useful for... 相似文献
99.
Looking at micro-data on the networks of inventors of a French science university, we investigate whether the kind of cognitive relationships between researchers influences the geography of their collaborations.The hypothesis we test (and confirm empirically) is that academic knowledge diffuses in a restricted geographic area when the connected researchers belong to epistemic communities, whereas communities of practice entail less localised effects. We also show that institutionally mixed research teams do not impede large knowledge diffusion. 相似文献
100.
Patrick Vanden Berghe 《Journal of Web Librarianship》2016,10(4):316-326
ABSTRACTFlemish libraries have historically been praised by visitors and valued by the general public, but since the turn of the century, they have seen a decline in usage. A group of libraries in Flanders believed the role of libraries should be substantially reevaluated. They embarked on the “Delphi Project” to establish methods for libraries to become centers of their local communities by focusing on the information needs of their customers. The emergence of technology supported a shift from libraries as lending institutions to information centers. In addition to a customer service philosophy and training, online tools have helped staff reach library users. An online tool called the “Bronnenwijizer” combines searching the local library catalogue, provincial and state catalogues, and the Internet. The tool also supports the creation of “baskets” for a patron's information needs that can be shared with other staff. Delphi libraries have also used “Infopleinen,” Web-based guides to topics featuring printed media and online sources. Finally, a new online question registration system was developed that fit the new Delphi service philosophy. Over half the libraries in West-Vlaanderen are entitled to call themselves Delphi Libraries, and the philosophy is being disseminated more broadly through the Delphi Project Web site. Due to governmental changes in provincial authority, the future of the project is challenged because coordination among libraries has been critical for the project's success. 相似文献