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971.
Video has assumed an increasingly prominent role in teacher education, particularly in the form of the viewing of videotaped
class lessons by preservice teachers. Yet there is little research that confirms whether preservice teachers attend to the
aspects of the video(s) that teacher educators anticipate or desire. This article explores this issue and reports on the impact
of video viewing as a means to improve teachers’ ability to be observers of classroom practice. We utilized a pre- and post-test
design to measure the quantity and type of classroom events that preservice mathematics teachers noticed before and after
a teaching methods course where improving observation skills was an explicit goal. The results of the pre-assessment suggest
that preservice teachers generally do not enter teaching methods courses with well-developed observation skills. The post-assessment
indicates that the course led to significant increases in preservice teachers’ observation skills, particularly in teachers’
ability to notice features of the classroom environment, mathematical content of a lesson, and teacher and student communication
during a lesson.
相似文献
Jon R. StarEmail: |
972.
973.
PhD students’ work conditions and study environment in university- and industry-based PhD programmes
During the last 10 years, new models of funding and training PhD students have been established in Denmark in order to integrate industry into the entire PhD education. Several programmes have been conducted where it is possible to co-finance PhD scholarships or to become an employee as an industrial PhD in a company. An important question is what impact these new conditions will have on the PhD students’ training, work conditions and study environment. In this article, the new type of programmes will be presented together with data analysis of PhD students’ work conditions and study environment in various programmes mainly based on a research project from 2006. The results of this study show no significant difference between PhD students in a traditional university PhD programme and PhD students in an industrial programme concerning working environment. However, the study shows significant differences in the intercultural dimension, where foreign PhD students are significantly more satisfied with their study environment compared with Danish PhD students. In general the workload is very high and the environment is stressful for all PhD students. 相似文献
974.
This study utilized early reading assessment data from a randomized trial of 210 urban and rural schools in Texas to examine
contextual effects on risk prediction in first and second grade. The primary objective was to examine the roles of (a) individual
differences, (b) the grade 1 classroom, and (c) the pairing of first and second grade teachers in determining grade 2 outcomes
in word reading and fluency. A second objective was to investigate whether the administration format of the assessment (paper,
paper plus desktop, handheld plus desktop) or the level of teacher support (web mentoring, no mentoring) moderated the prediction.
These moderator variables proved not to be significant. Subsequent analyses found that a combination of student pretest and
mean of pretest classroom was a better predictor than student pretest alone. Additionally, the effect of student scores varied
by teacher-pair. On average, intraclass correlations (ICCs) ranged from 6% to 17%. Differences in ICCs at the classroom level
were much greater than at the school level, and differences in urban schools were twice that of rural schools. 相似文献
975.
This paper presents a novel mega-Hz-level super high frequency zero-voltage soft-switching converter for induction heating power supplies. The prominent advantage of this topology is that it can absorb both inductive and capacitive parasitic components in the converter. The switch devices operate in a zero-voltage soft-switching mode. Consequently, the high voltage and high current spikes caused by parasitic inductors or capacitors oscillation do not occur in this circuit, and the high power loss caused by high frequency switching can be greatly reduced. A large value inductor is adopted between the input capacitor and the switches, thus, this novel converter shares the benefits of both voltage-type and current-type circuits simultaneously, and there are no needs of dead time between two switches. The working principles in different modes are introduced. Results of simulation and experiments operated at around 1 MHz frequency verify the validity of parasitic components absorption and show that this convener is competent for super high frequency applications. 相似文献
976.
Fei-Ching Chen Thomas C. Wang 《Educational technology research and development : ETR & D》2009,57(5):587-612
This paper studies the social talk of high school students in online discussion forums. On-task talk has generally been assessed as valuable discussion because it contributes directly to productive learning. Off-task conversation, on the other hand, is often regarded as useless and a waste of time. Should this social talk indeed be regarded as an off-task activity? Is social talk such as greeting, excusing, comforting and sharing personal feelings irrelevant to learning? This study analyzes threads and argues that social talk is interwoven with on-task talk. It is interesting to note that a substantial quantity of off-task messages served the latent function of guiding group discussion toward making progress in solving collaborative problems in a subtle and indirect manner. The power of “soft talk” embedded in off-task social conversation is explored and fully discussed. 相似文献
977.
Kirby Deater-Deckard Paula Y. Mullineaux Stephen A. Petrill Lee A. Thompson 《Reading and writing》2009,22(1):107-116
We examined the associations between components of temperament and children’s word and pseudo-word reading skills, in a school-age
sample using a within-family internal-replication design. We estimated the statistical prediction of word and pseudo-word
reading in separate regression equations that included the main effects of, and two-way interaction between, Surgency and
Effortful Control. Children with better Effortful Control scores showed better reading skills. Surgency was unrelated to reading
skills, but moderated the effect of Effortful Control. The positive association between reading skills and Effortful Control
was present only for children who were low in Surgency. Thus, reading achievement in school-age children is optimized by strong
Effortful Control, but these processes may be disrupted for those children who are high in Surgency. 相似文献
978.
Ali Bikmoradi Mats Brommels Alireza Shoghli Davoud Khorasani Zavareh Italo Masiello 《Higher Education》2009,57(4):417-427
In Iran, restructuring of medical education and the health care delivery system in 1985 resulted in a rapid shift from elite
to mass education, ultimately leading to an increase in the number of medical schools, faculties, and programs and as well
as some complications. This study aimed to investigate views on academic culture, values, and routines held by faculty members.
A nation-wide survey conducted in six public medical schools in Iran. The research findings show weak organizational culture
and values, together with routine behaviors sensed as a negative and low satisfaction with academic leadership. The research
evidence suggests bureaucracy, politicization, conservativeness, and centralization as common features of medical schools
in Iran and also suggests suitable supervisory skills to tackle the tension between governmental management and academic leadership
with cultural changes, the creation of new values, and adoption more efficient routines. 相似文献
979.
The role of ethnicity in the attainment and experiences of graduates in distance education 总被引:1,自引:0,他引:1
John T. E. Richardson 《Higher Education》2009,58(3):321-338
In the UK, the attainment of White graduates (as measured by the class of honours that they have been awarded) tends to be
higher than that of graduates from other ethnic groups. This is apparent, in particular, in graduates who have taken courses
by distance learning with the Open University. Analysis of data from Open University graduates over three successive years
yielded no evidence that the latter trend could be attributed to confounded demographic variables. A postal survey found little
variation in perceptions of academic quality or reports of personal development among Open University graduates from different
ethnic groups. Quantitative variations in the attainment of graduates from different ethnic groups are not necessarily reflected
in qualitative variations in their experience of distance education. 相似文献
980.