Blinded by the sun: The role of prosumers as niche actors in incumbent firms’ adoption of solar power during sustainability transitions     

Carmen Weigelt  Shaohua Lu  J. Cameron Verhaal 《Research Policy》2021,50(9):104253

While extant research discusses how niche innovations develop in protected market niches and trigger regime shifts along sustainability transition pathways, we know less about the direct role of different niche actors as competitors in affecting regime incumbents’ investments in niche innovations. This study addresses this gap and builds on Strategic Niche Management and the Multi-level Perspective to distinguish two different niche actors: prosumers on the demand-side applying a niche innovation in a disruptive way to regime incumbents’ business model, and new entrants on the supply-side applying the niche innovation symbiotically with the regime. We examine incumbent responses to these different niche actors in different competitive and policy environments. Studying the United States’ electricity industry's sustainability transition toward solar from 2010-2017, we find that as more niche actors enter, regime incumbents are more likely to invest in the niche innovation, but the effect is influenced by policy and competitiveness of the environment. In competitive environments, incumbents are more likely to respond to disruptive niche actors (prosumers), while in traditional monopoly-like markets they are more likely to respond to symbiotic niche actors. We also find that the prosumer effect is stronger when the time that policies in support of the niche innovation have existed is shorter, indicating a potential substituting relationship of niche actors and policy. Our work contributes to the extant literature by demonstrating that the interplay between different niche actors needs to be understood within the context of policy, and that considering policy without accounting for the competitive environment may omit an important aspect of how regime actors become active participants in sustainability transitions.  相似文献   

对外汉语口语教学中面临的问题及思考     

孔凡洁 《河北广播电视大学学报》2014,19(5):81-84

分析当前对外汉语口语课所肩负的任务,以及其中所存在的问题。某些口语课依然存在以讲授语言点为重点,而不是侧重语言技能的训练。教学进度与练习时间冲突。在语言环境不够真实的情况下,教学方法又太过传统。在教学实践中,各任课教师集体备课,协调词汇语法教学任务。以及走出课堂,充分利用学校和社会语言环境等方法对提高口语课的实效都很有帮助。  相似文献   

如何淘到二手好货     

Carmen Wong Ulrich 《英语沙龙》2014,(1)

正不知不觉中,"二手货"的定义早已悄悄发生了变化,这也源于人们观念的转变——曾经的二手货陈旧、单调,是旧货的代名词;而如今的二手货则被赋予了全新的概念:闲置品、奢侈品、收藏品成为了二手货市场的主力军。由于购买二手货不光省钱,而且"绿色、环保",因此这种消费方式也逐渐成为了一种时尚,影响着人们生活的方方面面。如何才能淘到二手好货?购买二手货时应该注意什么?看看我们为你提供的建议吧!  相似文献   

Collaborative Learning Groups in Higher Education     

Carmen Medina Garríguez  ;Roslyn Billy-Mohamed 《美中教育评论》2014,(7):500-508

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Development of a three-dimensional cell culture system based on microfluidics for nuclear magnetic resonance and optical monitoring     

Vicent Esteve  Javier Berganzo  Rosa Monge  M. Carmen Martínez-Bisbal  Rosa Villa  Bernardo Celda  Luis Fernandez 《Biomicrofluidics》2014,8(6)

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The challenge of shaping socially responsible teachers*     

Carmen Mohamed 《Education 3-13》2019,47(1):74-88

It has been vigorously argued over decades that trainee teachers hold entrenched, stereotypical attitudes and beliefs about diverse groups of pupils. These assumptions have been shown to create discriminatory teaching practice which affects the educational attainment of pupils as young as five. This article reports on a study of the complex issues involved in challenging trainee teacher assumptions in an attempt to address the cycle of perpetuating stereotypes. The study was carried out within the context of Initial Teacher Training during a 10-month primary PGCE programme at an English university. The professional reflections of a participant sample of trainee teachers were analysed to ascertain the participants’ awareness of their own socio-cultural beliefs and assumptions and how the variety of instructional pedagogies supported or inhibited their examination of those beliefs. The findings provide implications for all teacher training programmes that attempt to ensure educational equality for children.  相似文献   

Capital and Knowledge Flows: Global higher education markets     

Carmen Luke 《Asia Pacific Journal of Education》2005,25(2):159-174

Accelerating global flows of people and information have formed new communities and networks across social and political borders. Higher education is one such globalised knowledge community in which new patterns of knowledge, accreditation, research alliances, and social and professional relationships are emerging. In this paper I outline the push–pull dynamics of globalisation in higher education: the co-constitutive nature of local and global interests and educational formations; disjunctive flows of capital, information, people, and knowledge; and the new politics of knowledge capital as they affect academic research and the public archive of scholarly publishing and university libraries. I close with reflections on the differential consequences of globalisation on: the role of the nation state in higher education provision and reform; the role of education in nation building and national identity politics; and the governability of a global eduscape.  相似文献   

Involvement in sedentary activities and academic performance in adolescents: differences according to sociodemographic variables / Implicación en actividades sedentarias y rendimiento académico en adolescentes: diferencias según variables sociodemográficas     

Alexandra Valencia-Peris  José Devís-Devís  Carmen Peiró-Velert 《Cultura y Educación》2016,28(2):301-327

This study provides a first-time analysis of the differences in the time dedicated each day to different sedentary activities (SA) (productive, technology-based recreation and social activities) and their relation with the academic performance of Spanish adolescents according to sex, school year and socioeconomic status (SES). The sample was made up of 681 participants (50.2% girls), between 12 and 18 years old, who completed self-reported questionnaires. The likelihood of obtaining lower levels of academic success increase in adolescents who spend two or more hours on social SAs and have a lower SES. With boys, this increases further if they spend four or more hours on SAs involving technology-based recreation and two or less hours on productive SAs. In conclusion, adolescents spend a high number of hours carrying out sedentary activities after school. This is something that needs controlling since it may have a detrimental effect on their academic success, especially among adolescent boys.  相似文献   

Struggling and juggling: a comparison of student assessment loads across research and teaching-intensive universities     

Carmen Tomas 《Assessment & Evaluation in Higher Education》2019,44(1):1-10

In spite of the rising tide of metrics in UK higher education, there has been scant attention paid to assessment loads, when evidence demonstrates that heavy demands lead to surface learning. Our study seeks to redress the situation by defining assessment loads and comparing them across research and teaching intensive universities. We clarify the concept of ‘assessment load’ in response to findings about high volumes of summative assessment on modular degrees. We define assessment load across whole undergraduate degrees, according to four measures: the volume of summative assessment; volume of formative assessment; proportion of examinations to coursework; number of different varieties of assessment. All four factors contribute to the weight of an assessment load, and influence students’ approaches to learning. Our research compares programme assessment data from 73 programmes in 14 UK universities, across two institutional categories. Research-intensives have higher summative assessment loads and a greater proportion of examinations; teaching-intensives have higher varieties of assessment. Formative assessment does not differ significantly across both university groups. These findings pose particular challenges for students in different parts of the sector. Our study questions the wisdom that ‘more’ is always better, proposing that lighter assessment loads may make room for ‘slow’ and deep learning.  相似文献   

Ethnic,Familial, and Religious Identity of Roma Adolescents in Bulgaria,Czech Republic,Kosovo, and Romania in Relation to Their Level of Well‐Being          下载免费PDF全文

Radosveta Dimitrova  Fons J. R. van de Vijver  Jitka Taušová  Athanasios Chasiotis  Michael Bender  Carmen Buzea  Fitim Uka  Ergyul Tair 《Child development》2017,88(3):693-709

This study examines ethnic, national, familial, and religious identity and well‐being of 632 Roma minority and 589 majority adolescents (age: M = 15.98 years, SD = 1.34) in Bulgaria, the Czech Republic, Kosovo, and Romania. Results indicated that Roma showed lower endorsement of national identity but stronger religious identity than their majority counterparts. Path models showed positive associations of familial and religious identities with well‐being, whereas Roma identity was negatively associated with well‐being, particularly for Roma in Bulgaria and Kosovo (countries with a less active policy toward improving conditions of Roma). In the latter countries, Roma ethnic identity is less relevant and weakly associated with psychological well‐being of youth.  相似文献