VII. GENDER IN LOW- AND MIDDLE-INCOME COUNTRIES: REFLECTIONS,LIMITATIONS, DIRECTIONS,AND IMPLICATIONS     

Marc H. Bornstein  Diane L. Putnick  Kirby Deater-Deckard  Jennifer E. Lansford  Robert H. Bradley 《Monographs of the Society for Research in Child Development》2016,81(1):123-144

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Effects of power variation on cycle performance during simulated hilly time-trials     

Marc S. Wells 《European Journal of Sport Science》2016,16(8):912-918

It has previously been shown that cyclists are unable to maintain a constant power output during cycle time-trials on hilly courses. The purpose of the present study is therefore to quantify these effects of power variation using a mathematical model of cycling performance. A hypothetical cyclist (body mass: 70?kg, bicycle mass: 10?kg) was studied using a mathematical model of cycling, which included the effects of acceleration. Performance was modelled over three hypothetical 40-km courses, comprising repeated 2.5-km sections of uphill and downhill with gradients of 1%, 3%, and 6%, respectively. Amplitude (5–15%) and distance (0.31–20.00?km) of variation were modelled over a range of mean power outputs (200–600?W) and compared to sustaining a constant power. Power variation was typically detrimental to performance; these effects were augmented as the amplitude of variation and severity of gradient increased. Varying power every 1.25?km was most detrimental to performance; at a mean power of 200?W, performance was impaired by 43.90?s (±15% variation, 6% gradient). However at the steepest gradients, the effect of power variation was relatively independent of the distance of variation. In contrast, varying power in parallel with changes in gradient improved performance by 188.89?s (±15% variation, 6% gradient) at 200?W. The present data demonstrate that during hilly time-trials, power variation that does not occur in parallel with changes in gradient is detrimental to performance, especially at steeper gradients. These adverse effects are substantially larger than those previously observed during flat, windless time-trials.  相似文献   

Search for Symbol Sense Behavior: Students in Upper Secondary Education Solving Algebraic Physics Problems     

Turşucu  Süleyman  Spandaw  Jeroen  de Vries  Marc J. 《Research in Science Education》2020,50(5):2131-2157

Research in Science Education - Students in upper secondary education encounter difficulties in applying mathematics in physics. To improve our understanding of these difficulties, we examined...  相似文献   

内蒙古民族关系和谐模式研究——以鄂温克族自治旗为例     

张银花 《呼伦贝尔学院学报》2011,19(2):4-7

民族关系和谐是构建和谐内蒙古的重要基石.内蒙古鄂温克族自治旗是由鄂温克族实行民族区域自治,并由达斡尔、蒙古、汉、回、满、鄂伦春等20多个民族构成的多民族地区,研究该旗民族之间和谐相处模式,深刻分析民族关系和谐的要素组成,对于促进多民族地区民族关系的和谐发展和建设和谐内蒙古具有重要的现实意义.  相似文献   

Socioeconomic strata, mobile technology, and education: a comparative analysis     

Paul Kim  Teresita Hagashi  Laura Carillo  Irina Gonzales  Tamas Makany  Bommi Lee  Alberto Gàrate 《Educational technology research and development : ETR & D》2011,59(4):465-486

Mobile devices are highly portable, easily distributable, substantially affordable, and have the potential to be pedagogically complementary resources in education. This study, incorporating mixed method analyses, discusses the implications of a mobile learning technology-based learning model in two public primary schools near the Mexico-USA border in the state of Baja California, Mexico. One school was located in an urban slum and the other in a rural village community. Empirical and ethnographic data were collected through a series of achievement tests, observations, surveys, and interviews involving 160 s grade school children recruited by convenience sampling. The general technology infrastructure, distinctive features of mobile learning to supplement literacy development, profound contextual phenomena arising from the two uniquely underserved communities, and social factors possibly influencing the educational experiences are discussed. The findings suggest that students in the rural village, seriously lacking educational resources and technology exposure, may have benefited substantially more from mobile technologies than urban school students possibly due to their relatively higher socio-economic status and higher parental involvement and interest in education. In contrast, there was no evidence of interaction with parental education levels, the experience of teachers or school principals, or the teacher’s perception or preparation of the technology. Overall, the mobile learning technology adoption was rapid, seamless, and actively driven by the students rather than the teacher. The challenges of the phenomenal migratory nature of most families in this unique geographical region are also discussed to benefit future studies.  相似文献   

Teaching and learning in microsystems engineering     

Resham S. Dhariwal  Marc P.Y. Desmulliez 《European Journal of Engineering Education》2005,30(3):341-352

Whereas research in MicroSystems Technology (MST) has grown rapidly over the last twenty years, the education of engineers at postgraduate level is still in its infancy. The number of dedicated MST research institutions, companies and university laboratories worldwide has grown at a dramatic rate and all require trained individuals who can be immediately operational in the workplace. With the possible exceptions of Germany and Switzerland, the authors of this article believe that the training requirements for such scientists, engineers and technicians have not been satisfactorily addressed as yet. Realising the need for adequate training in MST, the British funding agency for research in science and engineering, the EPSRC (Engineering and Physical Sciences Research Council) awarded a substantial grant to Heriot-Watt University in order to set up a Masters Training Package (MTP). The context of this grant, the syllabus developed for this Master of Science as well as its implementation are presented in this article. Advantages and drawbacks of block-based delivery of the course are presented from a pedagogical point of view for the different categories of students (full-time students, part-time students and company delegates).  相似文献   

Access to postsecondary education through sign language interpreting   总被引：1，自引：0，他引：1  

Marschark M  Sapere P  Convertino C  Seewagen R 《Journal of deaf studies and deaf education》2005,10(1):38-50

Despite the importance of sign language interpreting for many deaf students, there is surprisingly little research concerning its effectiveness in the classroom. The limited research in this area is reviewed, and a new study is presented that included 23 interpreters, 105 deaf students, and 22 hearing students. Students saw two interpreted university-level lectures, each preceded by a test of prior content knowledge and followed by a post-lecture assessment of learning. A variety of demographic and qualitative data also were collected. Variables of primary interest included the effects of a match or mismatch between student interpreting preferences (interpreting vs. transliteration) and the actual mode of interpreting, student-interpreter familiarity, and interpreter experience. Results clarify previous contradictory findings concerning the importance of student interpreting preferences and extend earlier studies indicating that deaf students acquire less than hearing peers from interpreted college-level lectures. Issues relating to access and success in integrated academic settings are discussed as they relate to relations among student characteristics, interpreter characteristics, and educational settings.  相似文献   

Assessing and Controlling Acquiescent Responding When Acquiescence and Content Are Related: A Comprehensive Factor-Analytic Approach     

Pere Joan Ferrando  Fàbia Morales-Vives  Urbano Lorenzo-Seva 《Structural equation modeling》2016,23(5):713-725

This article proposes procedures for assessing and controlling acquiescence in personality scales when acquiescence is related to the content that the scale intends to measure. Our proposal is comprehensive in that it can be applied to different item response formats fitted with response models that can be parameterized as factor-analytic models. In the calibration stage, our proposal makes joint use of a balanced scale and a set of markers for acquiescence, and consists of 2 sequential procedures: a direct semirestricted solution, and a restricted solution with minimal identification constraints. In the scoring stage, we discuss how the information given by the acquiescence–content relation can be used to obtain Bayes expected a posteriori scores. The robustness of the direct procedure is assessed both analytically and by simulation. A free, user-friendly program that implements the procedures proposed is made available. Practical issues of use and interpretation are discussed and illustrated with an empirical application.  相似文献   

II. GENDER IN LOW- AND MIDDLE-INCOME COUNTRIES: GENERAL METHODS     

Marc H. Bornstein  Diane L. Putnick  Robert H. Bradley  Kirby Deater-Deckard  Jennifer E. Lansford  Yumiko Ota 《Monographs of the Society for Research in Child Development》2016,81(1):24-32

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Into the 21st century     

Marschark M 《Journal of deaf studies and deaf education》2007,12(2):125-126

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