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

John P. Helveston  Yanmin Wang  Valerie J. Karplus  Erica R.H. Fuchs 《Research Policy》2019,48(1):206-222

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.  相似文献   

Designing Diana: Female Sports Entrepreneurs and Equestrian Innovation     

Erica Munkwitz 《国际体育史杂志》2018,35(7-8):745-766

Abstract

Throughout the late nineteenth century, many women turned their talents to improving horse sports as authors, equipment inventors, clothing designers, and trainers. Although these were male-dominated domains, many women quickly realized that there was a demand for their expertise and innovation as men did not ride side-saddle nor understand it. Thus, women became writers of sporting manuals (non-fiction) and sporting novels (fiction), which aided other women in improving and understanding riding and hunting. They also made significant innovations in equipment construction, such as saddles and stirrups, and clothing design, in fashioning specialized sporting garments. Finally, they also became riding instructors, training other women to ride and hunt well. Though some women forged ahead for their own benefit, seeking profit out of writing or teaching, there were also many other women who pursued new ideas to improve horse sports as a whole and encourage greater, safer, and better participation for other women. In these ways, female equestrians consciously acted as sporting entrepreneurs and are significant but underappreciated agents of change not only for equestrianism but for larger social, sartorial, and sporting transformations.  相似文献   

Bioimpedance patterns and bioelectrical impedance vector analysis (BIVA) of road cyclists     

Andrea Giorgi  Maurizio Vicini  Luca Pollastri  Erica Lombardi  Emilio Magni  Andrea Andreazzoli 《Journal of sports sciences》2018,36(22):2608-2613

Bioelectrical impedance vector-analysis (BIVA) describes cell-mass, cell function and hydration status of an individual or a group. The goal of the present investigation was to provide bioelectrical impedance data for 525 male road cyclists (155 professionals, 79 elite, 59 elite-youth, and 232 amateurs) at the time of their optimal performance level. Data were plotted on the resistance-reactance (R-Xc) graph to characterize cyclists group vectors using BIVA. Compared to the general male population, the mean vector position of the road cyclists indicates a higher body cell mass (BCM) and phase angle (p<0.001). The vector position of the high-performance, compared to the amateur cyclists showed similar patterns with higher BCM and phase angles and higher reactance values for the high-performance athletes (p<0.001). The bio-impedance data were used to calculate the 50%, 75%, and 95% tolerance ellipses of each group of cyclists. The characteristic vector positions of the road cyclists indicate normal hydration and greater muscle mass and function of the high-performance cyclists compared to amateur cyclists and the normal population. The cyclists specific tolerance ellipses, particularly the high-performance cyclists might be used for classifying a cyclist according to the individual vector position and to define target vector regions for lower level cyclists.  相似文献   

The Effectiveness of an Augmented Reality Head-Mounted Display in Learning Skull Anatomy at a Community College     

Elizabeth A. Duncan-Vaidya  Erica L. Stevenson 《Anatomical sciences education》2021,14(2):221-231

Despite an increase in the use of technology in undergraduate anatomy education, and the rising popularity of online anatomy courses at community colleges in the United States, there have been no reports on the efficacy of augmented reality on anatomy education in this population. The purpose of this study was to test the hypothesis that augmented reality is an effective and engaging tool for learning anatomy in community college students. Participants recruited from Cuyahoga Community College (Cleveland, OH) studied skull anatomy using either traditional tools (i.e., textbook and plastic skull model) or an augmented reality head-mounted display with an interactive virtual skull application. Comparison of knowledge before and following the study period revealed that augmented reality was an effective tool for learning skull anatomy: pre-quiz = 32.7% (± 25.2); mean (± SD), post-quiz = 61.8% (± 19.5); n = 15; t₍₂₈₎ = 3.53; P = 0.001. The traditional tools were equally effective: pre-quiz = 44.9 % (± 18.6), post-quiz = 67.9 % (± 17.3); n = 17; t₍₃₂₎ = 3.73; P = 0.0007. Students rated the augmented reality device as 9.6 (± 1.0); mean (± SD) when asked if it fit the statement “fun to use” on a semantic differential scale from 1 (poor) to 10 (excellent). In conclusion, this study found that augmented reality is an effective and engaging tool for the instruction of skull anatomy at a community college.  相似文献   

Travels in extreme social mobility: how first-in-family students find their way into and through medical education     

Erica Southgate  Caragh Brosnan  Heidi Lempp  Brian Kelly  Sarah Wright  Sue Outram 《Critical Studies in Education》2017,58(2):242-260

ABSTRACT

Higher education is understood as essential to enabling social mobility. Research and policy have centred on access to university, but recently attention has turned to the journey of social mobility itself – and its costs. Long-distance or ‘extreme’ social mobility journeys particularly require analysis. This paper examines journeys of first-in-family university students in the especially high-status degree of medicine, through interviews with 21 students at an Australian medical school. Three themes are discussed: (1) the roots of participants’ social mobility journeys; (2) how sociocultural difference is experienced and negotiated within medical school; and (3) how participants think about their professional identities and futures. Students described getting to medical school ‘the hard way’, and emphasised the different backgrounds and attitudes of themselves and their wealthier peers. Many felt like ‘imposters’, using self-deprecating language to highlight their lack of ‘fit’ in the privileged world of medicine. However, such language also reflected resistance to middle-class norms and served to create solidarity with community of origin, and, importantly, patients. Rather than narratives of loss, students’ stories reflect a tactical refinement of self and incorporation of certain middle-class attributes, alongside an appreciation of the worth their ‘difference’ brings to their new destination, the medical profession.  相似文献   

Teachers’ journeys towards critical use of ICT     

Renato Schibeci  Judith MacCallum  Wendy Cumming‐Potvin  Cal Durrant  Barry Kissane  Erica‐Jane Miller 《Learning, Media and Technology》2008,33(4):313-327

Teachers have a central role in developing new learning models in schools. This paper describes a study that explored teachers’ confidence and competence in using Information and Communication Technologies (ICT) as they participated in an ICT development project conducted by an Australian education system in 12 primary schools. The project aimed to develop ICT integrated teaching practices by providing in‐class equipment and teacher professional development in ICT use, curriculum development and teaching strategies. The study used qualitative data from teacher records of Professional Development and Action Learning to identify three of four stages proposed to describe teachers’ ICT learning. Teachers moved from gaining basic ICT skills, to conducting ICT‐focused lessons and eventually appropriate ICT integration. Teachers who progressed to the third stage were able to exploit additional learning opportunities and begin to make fundamental changes to their pedagogy, but needed more time to reach the final stage of challenging existing pedagogical structures.  相似文献   

Disengaging from the Legacy of Lady Bountiful in Teacher Education Classrooms   总被引：2，自引：0，他引：2  

Erica R. Meiners 《Gender and education》2002,14(1):85-94

Working specifically from the authors location in a working class urban teacher education program in the United States, this paper argues for the examination and problematization of one foundational archetype of a teacher in North America: the (white) Lady Bountiful. Incorporating discussions of the historical colonial contexts that produced this archetype and the ideologies she represents, this paper argues that the persistence of this image in popular culture, in teacher education programs, and beyond, contributes to a climate that makes it difficult to address white supremacy, heteronormativity and social class issues in teacher education programs. In addition, the endurance of this archetype can 'prohibit' certain bodies from entering the teaching profession.  相似文献   

Quality and Qualms in the Marking of University Assignments by Sessional Staff: An Exploratory Study   总被引：3，自引：0，他引：3  

Erica Smith  Kennece Coombe 《Higher Education》2006,51(1):45-69

The higher education sector is increasingly reliant upon casual (‘sessional’) staff for teaching and marking purposes. While this practice has been little examined in the past, over the last few years increasing attention has been paid to the quality of marking, mainly because students and academic staff alike are becoming increasingly likely to question examples of poor practice. Hence, many universities in Australia are now attempting to introduce stricter procedures relating to marking. Despite current concerns, there is little published research on marking practices in Australian universities. This paper adds to the body of knowledge by reporting on two pieces of empirical research into the use of casual markers. A project at Charles Sturt University comprised focus groups of, respectively, students, lecturers and markers, and a survey of distance education students. Research at the University of South Australia focused on pedagogical issues relating to marking, comparing the approaches of permanent lecturing staff with those of sessional markers. The results of these projects provide a useful insight into areas of current concern to university staff and management.  相似文献   

Interventions supporting baccalaureate achievement of Latinx STEM students matriculating at 2-year institutions: A systematic review     

Julie P. Martin  Nathan Hyungsok Choe  Jared Halter  Margaret Foster  Jeffrey Froyd  Maura Borrego  Erica R. Winterer 《科学教学研究杂志》2019,56(4):440-464

Numerous national reports have identified the importance of significantly improving pathways that begin with Latinx students enrolling in 2-year institutions and ultimately completing baccalaureate degrees in STEM fields at 4-year institutions. Many programs using multiple interventions have been designed, implemented, and studied to achieve this goal. To synthesize what has been learned from studies of these programs, this article presents a systematic review of published studies of programs designed to support Latinx student success in 2-year institutions and successful transfer to 4-year institutions, particularly for STEM majors. A total of 49 quantitative, 9 qualitative, and 16 mixed-methods studies published as reports, articles, or dissertations since 1980 were identified that met the criteria for the review. Studies covered a wide range of interventions, including mentoring, counseling, advising, study groups, tutoring, scholarships, orientations, career services, undergraduate research, articulation agreements, and transfer programs. Individually, these studies report positive influences on student success outcomes, including 2- and 4-year graduation, transfer to a 4-year institution, retention, and success in individual courses. However, the number of qualifying studies was surprisingly small, considering the importance of improving success of Latinx students and the length of time during which the problem has been repeatedly emphasized. Few interventions have been undertaken from explicitly assets-based perspectives or theoretical frameworks. The lack of explicit frameworks underlying interventions—combined with a sole/primary focus on students—suggests many interventions were approached from a deficit-based perspective. Further, the study found no pattern of replication studies that might confirm effectiveness of potentially promising interventions. Based on our analysis of evaluations presented in the studies, it does not appear that the research community has developed agreed-upon methods to evaluate commonly agreed-upon outcomes. Finally, no intervention has been sufficiently supported that widespread implementation could be recommended.  相似文献   

Towards a research training curriculum: What, Why, How, Who?   总被引：3，自引：0，他引：3  

Erica McWilliam  Parlo Singh 《The Australian Educational Researcher》2002,29(3):3-18

Our purpose in this paper is to investigate the ways in which the work of research higher degree supervision is being reshaped from within and outside universities. Our interest is in the means by which new ‘content’ and ‘process’ knowledge — and thus a new set of pedagogical tasks and relationships — are being configured in the field of higher degree research. The outcomes of research training have traditionally been products of a one-on-one supervisory relationship, that is, academic apprentice-to-disciplinary mentor. This is especially the case in the fields of arts/humanities. Any ‘curriculum’ necessary to such a model has been both implicit and at the discretion of the disciplinary ‘master’.  相似文献