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991.
992.
There is little information in the conservation literature with respect to artists’ alkyd paints; thus, artists and conservators are somewhat at a loss about how to use and treat alkyds. Recently, analytical methods have been developed to identify the components in these polymers (oil modified polyesters), rates of cross-linking and mechanical properties. Presented in this paper are some of the characterization results of artists’ alkyd paints using THM (thermally assisted hydrolysis and methylation) gas chromatography– mass spectrometry (THM–GC/MS) and Fourier transform infrared spectroscopy–attenuated total reflectance (FTIR–ATR). Four brands of artists’ alkyd paints containing alkyd resin have been analysed; one containing a phthalic anhydride and pentaerythritol based alkyd resin, two containing isophthalic acid and pentaerythritol based alkyd resins, and the final one containing both phthalic anhydride and isophthalic acid and pentaerythritol based resins among the colours studied. 相似文献
993.
Victoria A. Roach Misa Mi Jason Mussell Sonya E. Van Nuland Rebecca S. Lufler Kathryn M. DeVeau Stacey M. Dunham Polly Husmann Hannah L. Herriott Danielle N. Edwards Alison F. Doubleday Brittany M. Wilson Adam B. Wilson 《Anatomical sciences education》2021,14(3):317-329
Interest in spatial ability has grown over the past few decades following the emergence of correlational evidence associating spatial aptitude with educational performance in the fields of science, technology, engineering, and mathematics. The research field at large and the anatomy education literature on this topic are mixed. In an attempt to generate consensus, a meta-analysis was performed to objectively summarize the effects of spatial ability on anatomy assessment performance across multiple studies and populations. Relevant studies published within the past 50 years (1969–2019) were retrieved from eight databases. Study eligibility screening was followed by a full-text review and data extraction. Use of the Mental Rotations Test (MRT) was required for study inclusion. Out of 2,450 screened records, 15 studies were meta-analyzed. Seventy-three percent of studies (11 of 15) were from the United States and Canada, and the majority (9 of 15) studied professional students. Across 15 studies and 1,245 participants, spatial ability was weakly associated with anatomy performance (rpooled = 0.240; CI at 95% = 0.09, 0.38; P = 0.002). Performance on spatial and relationship-based assessments (i.e., practical assessments and drawing tasks) was correlated with spatial ability, while performance on assessments utilizing non-spatial multiple-choice items was not correlated with spatial ability. A significant sex difference was also observed, wherein males outperformed females on spatial ability tasks. Given the role of spatial reasoning in learning anatomy, educators are encouraged to consider curriculum delivery modifications and a comprehensive assessment strategy so as not to disadvantage individuals with low spatial ability. 相似文献
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995.
AbstractEffective communication of science is a ubiquitous learning outcome for most science degrees, and a national threshold learning outcome for science in Australia. Evidence suggests that employers and academics are dissatisfied with the communication skills of many science graduates. Our study examines communication tasks used in summative assessment in bachelor of science (BSc) degrees. We compiled public information for all units of study from the BSc programmes at five research-intensive Australian universities. Our analysis suggests that science academics place high value on developing the ability of students to communicate, with 66% of all science units (n?=?1225) using one or more communication tasks as assessment (mean weighting 44%). However, opportunities for students to communicate in a variety of contexts are lacking. We found that communication tasks from eight majors (n?=?683) across the five universities addressed a very narrow range of contexts; an audience of scientists (including students) in the same discipline (97%), in the mode of traditional writing (79%) and for the purpose of interpreting and presenting results (66%). As such, assessment practice does not match the variety of contexts required by the Australian threshold learning outcomes or guiding statements in other countries. We identify opportunities and offer practical recommendations to help correct this mismatch. 相似文献
996.
This study examined how colored educational tools improve children’s numerosity (“number sense”) and/or mathematics. We tested children 6–10 years (n = 3,236) who had been exposed to colored numbers from the educational tools Numicon (Oxford University Press, 2018) or Numberjacks (Ellis, 2006), which map colors to magnitudes or Arabic numerals, respectively. In a free association task pairing numbers with colors, a subset of children spontaneously provided colors matching one of these schemas. These children, who had internalized Numicon (colored magnitude), showed significantly better numerosity but not mathematics compared to peers. There was no similar benefit from internalizing Numberjacks (colored numerals). These data support a model in which colored number tools provide benefits at different levels of numerical cognition, according to their different levels of cross-modal mappings. 相似文献
997.
Amanda Henshall Louise Atkins Rebecca Bolan Heather Munn 《Journal of Vocational Education & Training》2018,70(3):417-434
The last 20 years have brought numerous workforce reforms to the early years sector, enacted in the name of professionalisation, including the recent introduction of a new postgraduate qualification, the Early Years Teacher Status. This article features data from interviews with 22 participants who had just completed this award and situates their views in the relevant policy context and alongside a discussion of what it means to professionalise the early years sector and create a graduate led workforce. The data support findings from similar studies of Early Years Professionals, namely that the interviewees are passionate about working with young children. They view the sector as in need of change, and themselves as potential leaders and agents of change. The participants endorse the view that up-skilling the workforce is essential to the professionalisation of the sector and improving the quality of early years education. 相似文献
998.
Reflections on the value of autistic participation in a tri‐national teacher‐training project through discourses of acceptance,othering and power 下载免费PDF全文
The Transform Autism Education (TAE) project is a tri‐national teacher training scheme involving Greece, Italy and the UK, whose purpose is to set up training projects to facilitate the educational inclusion of autistic children. Running over three years from 2014 to 2017, the involvement of autistic participants has been the source of some discussion. Here, TAE team members Wood and Milton reflect on narratives of participation, acceptance and struggle which emerged during a workshop they ran in Greece. Derived from 11 non‐autistic and two autistic participants, and analysed via discourse analysis, these stories suggest a high value placed on autistic participation by non‐autistic TAE team members, but an unwitting tendency to ‘other’ autistic people and a lack of awareness of the power differential. Meanwhile, as the autistic team members describe how educational and social participation can be achieved, the implications for autism education researchers and practitioners are discussed. 相似文献
999.
This case study explores student perceptions and experiences of advising at a New Zealand university. It considers the implications arising from the students’ responses and also investigates the influence of students’ demographic characteristics on perceptions of advice. Both first‐ (n = 191) and final‐ (n = 171) year cohorts of students were surveyed to determine why they chose particular courses, what advice they received and how aware they were of various support services. Although students were happy overall with the advice received, many had little or no expectations of the type of advice they should be receiving. The main sources of advice were the University enrolment pack, family and University School’s Liaison Officers. Academic advisers were less well used as a source of advice, even during later years of study. Advisers need to be educated about particular advising issues related to first‐generation students, part‐time students and international students. Many students had a career path in mind so it is important to provide holistic developmental academic advice that includes future career options. 相似文献
1000.
For socially appropriate communication, speakers must command a variety of linguistic styles, or registers, that vary according to social context and social relationships. This study examined preschool children's ability to use a speaker's register choice to infer the identity of their addressee. Four-year-olds could draw correct inferences based on Spanish and formal speech, and had limited success with infant-directed and casual styles. Five-year-olds drew appropriate inferences with all 4 styles; moreover, these children demonstrated strong explicit understanding of register, as measured through response justifications. These results demonstrate that children can use language for social judgments that extend beyond evaluating the speaker, and can interpret social implications of language even when not directly engaged in the particular social interaction. 相似文献