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21.
Changes in the higher education system have resulted in increased demands on effectiveness and marketisation. These demands have changed what it means to do academic work. In this study, 19 female academic lecturers have been interviewed in order to get them to reflect upon their opportunities and conditions in career. The aim is to analyse how this specific group manoeuvres; that is their 'becoming subjectivity' in academic career. This means an interest in analysing their locations, positions as well as their material and discursive conditions. The results show how many see teaching as important in career, but also as a trap that restrains them in their chances of research advancement. Several express that a lot of teaching drain the time and energy needed for other opportunities in career. There are also a few who experience teaching as a place where people actually collaborate more than compete and find alternative career strategies. Even so, these women appear caught in their careers, which can relate to gender, and to the experience of ‘incapacity’ to find directions in a more competitive structure.  相似文献   
22.
Many students have a deep interest in astronomy, but a limited opportunity to use telescopes to explore the heavens. The MicroObservatory Network of automated telescopes is designed to provide access to classroom teachers who wish their students to conduct projects over the World Wide Web. The intuitive interface makes it easy for even 10-year-olds to take pictures. Telescopes can be remotely pointed and focused: filters, field of view, and exposure times can be changed easily. Images are archived at the website, along with sample challenges and a user bulletin board, all of which encourage collaboration among schools. Wide geographic separation of instruments provides access to distant night skies during local daytime. Since first light in 1995, we have learned much about remote troubleshooting, designing for unattended use, and for acquiring the kinds of images that students desire. This network can be scaled up from its present capability of 240,000 images each year to provide telescope access for all US students with an interest in astronomy. Our WWW address is http://mo-www.harvard.edu/MicroObservatory/  相似文献   
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Rats tend to prefer flavors previously consumed under low deprivation to flavors previously consumed under high deprivation (Capaldi & Myers, 1982). We attempted to distinguish among possible associative explanations by determining whether this conditioning phenomenon was based upon conditioned preferences, conditioned aversions, or both. We compared preference for flavors presented exclusively under either high or low deprivation with preference for a neutral flavor. In Experiments 1A and 1B the neutral flavor was one that had been randomly paired with both high and low deprivation, whereas in Experiments 2 and 3 the neutral flavors had not been associated with either high or low deprivation. Our results strongly suggest that this conditioning phenomenon is based upon an actual increase in preference for the flavor consumed under low deprivation rather than on any form of aversion conditioning.  相似文献   
25.
One could focus on many different aspects of improving the quality of mathematics teaching. For a better understanding of children’s mathematical learning processes or teaching and learning in general, reflection on and analysis of concrete classroom situations are of major importance. On the basis of experiences gained in a collaborative research project with elementary school teachers, several ideas about a professional reflection on one’s own instruction activities are explained. The paper focuses on joint reflection between teachers and researchers on the participating teacher’s own classroom interaction by means of concrete examples. It becomes clear that changes of one’s own interaction behavior will take place only in the long-term. Nevertheless such a joint professional reflection should be an essential component of teachers’ professional knowledge in a natural way.  相似文献   
26.
This discussion begins from the speculation that evaluating formulations of life has become one of the leading prerogatives of “novel” turns to matter, materiality, and the posthuman. However, moving with the Other (rather than simply representing them) has proven a difficult task for scholars in education concerned with decolonizing pedagogies by critiquing epistemological and ontological regimes of power disengaged from the interrogation of the metaphysics of race and sex at the center of Western metaphysical foundations of thought. There is an ongoing need for sustained engagement with the assumption of human primacy that runs through the nearly ubiquitous assertions of what Claire Colebrook calls active vitalism, which is characteristic of humanist approaches to education. In other words, the new conceptualizations of posthumanism only rarely challenge the lingering humanist concept of life itself. In this article, Petra Mikulan and Adam Rudder argue that posthumanist and neo‐vitalist materialist approaches to ontology must consider that racism is vitalist in the active sense because it begins with bodies (as bounded organisms always autopoetic and self‐proximate) and that vitalism is racist because it then distributes and discriminates racialized bodies according to their function as parts in a whole.  相似文献   
27.
Research in Science Education - The definition of biodiversity stated by the Convention on Biological Diversity (CBD) in 1992 was conceived as occurring on three different organizational levels:...  相似文献   
28.
The relation between cognitive and motor performance was studied in a sample of 378 children aged 5-6. Half of these children had no behavior problems; the others were selected for externalizing (38%) or internalizing problems (12%). Quantitative and qualitative aspects of motor performance were related to several aspects of cognition, after controlling for the influence of attention. No relation between global aspects of cognitive and motor performance was found. Specific positive relations were found between both aspects of motor performance, visual motor integration and working memory, and between quantitative aspects of motor performance and fluency. These findings reveal interesting parallels between normal cognitive and motor development in 5- to 6-year-old children that cannot be ascribed to attention processes.  相似文献   
29.
An understanding of wave mechanics is essential to making the leap from classical to quantum systems. Wavemaker is a simulation environment developed to reveal graphically the behavior of periodic systems using a series of increasingly sophisticated visualization tools. Individual particles in a many-particle system can be instrumented for study of kinematic behavior. Parametric representations reveal time-independent behaviors. Problems dealing with propagation, reflection, and Fourier synthesis are easily studied. Use with students has revealed that many students have preconceptions about the behavior of waves and that use of this software is helpful in connecting real to simulated systems, separating holistic behaviors from those of individual elements, identifying critical parameters, and making connections between variables that are used to describe and measure periodic systems.  相似文献   
30.
Male interscholastic swimmers (n = 8) completed a 4572 m training swim in 62 ±1.1 min (x ± s.e.) with terminal heart rate and blood lactate of 152 ± 6 beats min‐1 and 6.9±0.89 mM, respectively. Sweat rate (0.48±0.0951. h‐1) was lower than similar intensity cycling (1.5±0.13 1. h‐1) or running (1.1 ± 0.14 l.h‐1). Post‐swim serum urea N (11.6±0.71 mM) was elevated (P<0.05) vs pre‐swim (4.6±0.39 mM). Post‐swim urine volume (860±75 ml 24 h‐1) was reduced (P<0.07) and resulted in an elevated (P<0.05), but delayed (24–84 h), post‐exercise urea N excretion. Although the reduced urine and sweat production during the swim undoubtedly contributed to the elevated serum urea, there must be another explanation because together they could only account for 38% of the observed increase. On the basis of the magnitude of serum urea increase, it appears that the swim caused an increase in urea production (amino acid oxidation). The failure to observe larger increases in urinary urea during recovery indicates that either urea excretion following exercise continues for prolonged periods of time (>48 h) or another significant mode of nitrogen excretion exists.  相似文献   
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