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331.
Research in Science Education - This article provides rich insights into the process of data generation for discourse analysis from three separate studies of the video recordings of a single... 相似文献
332.
Jenny A. Darby 《Assessment & Evaluation in Higher Education》2007,32(4):441-455
The study attempted to assess the validity of measures commonly used for course evaluations. Activity and attitudinal measures were included and these were related to two different control groups. The study was completed with a sample of teachers who attended a course dealing with child abuse repeated 23 times with groups of approximately 25 teachers. It was found activities undertaken after the course were more a reflection on how little effort was required to carry them out than on the effectiveness of the course. Attitude measures tended to make it appear the course had an effect. The type of control group used for comparison purposes had a marked effect on whether the course appeared to have been effective. The need to consider these factors as influential variables when interpreting data from course evaluations was stressed. 相似文献
333.
This article, based on qualitative research, authorizes the voices and views of Vietnamese immigrant students regarding racial
dynamics at an urban public high school. Though not included in public or school-based discussions about race relations following
a violent clash between white and black students, Vietnamese students reported experiencing social exclusion and racial conflict
as a daily reality in school. The informants mapped the roots of racial conflict in school as a struggle over space, including
the classroom, hallways, cafeteria, gym, and bathrooms. The students also demonstrated a significant commitment to the school
and expressed a desire to be included in efforts to improve race relations and the quality of life within the school. Their
perspectives and experiences challenge the validity of the dominant black-and-white paradigm that defines the public understanding
of race relations in the school, the city, and the society. 相似文献
334.
To examine the effects of co-culture with bone marrow mesenchymal stem cells on expansion of hematopoietic stem/progenitor
cells and the capacities of rapid neutrophil engraftment and hematopoietic reconstitution of the expanded cells, we expanded
mononuclear cells (MNCs) and CD34+/c-kit+ cells from mouse bone marrow and transplanted the expanded cells into the irradiated mice. MNCs were isolated from mouse
bone marrow and CD34+/c-kit+ cells were selected from MNCs by using MoFlo Cell Sorter. MNCs and CD34+/c-kit+ cells were co-cultured with mouse bone marrow-derived mesenchymal stem cells (MSCs) under a two-step expansion. The expanded
cells were then transplanted into sublethally irradiated BDF1 mice. Results showed that the co-culture with MSCs resulted
in expansions of median total nucleated cells, CD34+ cells, GM-CFC and HPP-CFC respectively by 10.8-, 4.8-, 65.9- and 38.8-fold for the mononuclear cell culture, and respectively
by 76.1-, 2.9-, 71.7- and 51.8-fold for the CD34+/c-kit+ cell culture. The expanded cells could rapidly engraft in the sublethally irradiated mice and reconstitute their hematopoiesis.
Co-cultures with MSCs in conjunction with two-step expansion increased expansions of total nucleated cells, GM-CFC and HPP-CFC,
which led us to conclude MSCs may create favorable environment for expansions of hematopoietic stem/progenitor cells. The
availability of increased numbers of expanded cells by the co-culture with MSCs may result in more rapid engraftment of neutrophils
following infusion to transplant recipients.
Project supported by NIH-Blood, Heart & Lung (National Institute of Health, USA, IR 01 4L70593-01) and Zhejiang Provincial
Science Foundation (No. 011103397), China 相似文献
335.
Anders Berglund Mats Daniels Mathias Hedenborg Anders Tengstrand 《European Journal of Engineering Education》1998,23(1):45-54
Changing the assessment method is a way to influence the students’ attitudes towards their studies; their ways of working to a large extent are determined by the assessment methods. One way to take advantage of this is to use the assessment to stimulate creativity and communication skills. This has been tried in full‐scale studies for students in engineering physics, computer science and mathematics at Uppsala University and Vdxjö University, both in Sweden. Undergraduate education in engineering, computer science and mathematics has by tradition emphasized training in skills. The examination often consists of problems that the students solve individually. It is difficult to give complex and/or loosely defined problems in such an examination. The students are not encouraged to analyze, judge, communicate or discuss these skills. In fact, in the authors’ experience, traditional examinations can actually inhibit the development of the students’ independence and creativity. Both projects have been supported by the Council for Renewal of Undergraduate Education, Sweden. 相似文献
336.
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338.
Jenny Ungbha Korn 《Popular Communication》2017,15(2):95-109
ABSTRACTAs a femme woman of color, I employ critical autoethnography based on my participant observation within Chatroulette for a qualitative study on how online impressions through web cameras with strangers are formed in quick bursts of time. Chatroulette’s anonymity adds interesting context for impression creation in an online environment that emphasizes ocularcentrism of the embodied self. This article adds to methodologies of self-care for the qualitative researcher by positioning the issue of self-care in the online field, where “regular” interactions based on race, gender, sexuality, and more may leave autoethnographers from marginalized communities especially vulnerable. This study complicates the conceptual boundaries of “audience,” “participation,” and “observation” for online autoethnographic research. This research contributes to impression formation theory by focusing on the importance of the body in immediate, one-time impression constructions with conversational partners online. Race, gender, and sexuality impact online communication, even when a word is not even said. 相似文献
339.
Penny A. Pasque Nicholas A. Bowman Jenny L. Small Rachel Lewis 《Multicultural Perspectives》2013,15(2):80-89
This study explored the ways in which undergraduate students intentionally navigate complex curricular and co-curricular choices in preparation for engaging in a diverse democracy. Our study examined these choices among students at a university that lacks formal structures to facilitate these choices. Four curricular and co-curricular pathways that exemplify particular forms of the student experience across disciplines emerged and are discussed. 相似文献
340.