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1.
ABSTRACT

Using cross-sectional data from 504 students from four Kenyan universities, this study evaluates the indirect effect of brand personality on the relationship between social media and students’ behavioral intentions to enroll in postgraduate studies. Additionally, the study examines the moderating effect of attitude on the relationship between social media and brand personality, social media and students’ behavioral intentions, brand personality and students’ behavioral intentions. Finally, it investigates the moderating effect of attitude on the indirect process of brand personality on the relationship between social media and students’ behavioral intentions. The study is guided by the Theory of Planned Behavior, Technology Acceptance Model and Self Congruity Theory. Process Macro is used to analyze data. Results indicate that social media significantly predicts students’ behavioral intentions and this relationship is partially mediated by brand personality. Besides, attitude moderates the relationship between social media and students’ behavioral intentions and also the relationship between brand personality and students’ behavioral intentions. Finally, attitude has a conditional effect on the indirect relationship between social media and student’s behavioral intentions via brand personality and this effect is much stronger with a higher level of attitude. These findings contribute new knowledge to literature and theory.  相似文献   
2.
The Transition to Reaching: Mapping Intention and Intrinsic Dynamics   总被引:9,自引:0,他引:9  
The onset of directed reaching demarks the emergence of a qualitatively new skill. In this study we asked how intentional reaching arises from infants' ongoing, intrinsic movement dynamics, and how first reaches become successively adapted to the task. We observed 4 infants weekly in a standard reaching task and identified the week of first arm-extended reach, and the 2 weeks before and after onset. The infants first reached at ages ranging from 12 to 22 weeks, and they used different strategies to get the toy. 2 infants, whose spontaneous movements were large and vigorous, damped down their fast, forceful movements. The 2 quieter infants generated faster and more energetic movements to lift their arms. The infants modulated reaches in task-appropriate ways in the weeks following onset. Reaching emerges when infants can intentionally adjust the force and compliance of the arm, often using muscle coactivation. These results suggest that the infant central nervous system does not contain programs that detail hand trajectory, joint coordination, and muscle activation patterns. Rather, these patterns are the consequences of the natural dynamics of the system and the active exploration of the match between those dynamics and the task.  相似文献   
3.
The study examined the ability of deaf and hearing students at the college and middle school levels to discern and apply knowledge of printed word morphology. There were 70 deaf and 58 hearing participants. A two-part paper-and-pencil test of morphological knowledge examined subjects' ability to (a) perceive segmentation of morphemes within printed words and (b) recognize meanings associated with various printed morphemes. The hearing college students performed best on every dependent measure of the two-part test. The deaf college students scored significantly lower than the hearing college students but similarly to the hearing middle school students. Deaf middle school students consistently scored the lowest on both parts of the test. While all students' performance declined as the difficulty of the morphemic content increased within both tasks, the decline was greatest among middle school deaf students. Although segmentation and semantic analysis skills necessary to morphographic decoding were apparent in the deaf students, their mastery levels fell significantly below those of the hearing subjects.  相似文献   
4.
International Journal for Educational and Vocational Guidance - Active labour market policies aim at supporting people entering and, importantly, remaining in the labour market. Initiatives to this...  相似文献   
5.
The comparative kilogram-price of an equivalent product group in international trade is a rough indication of underlying technological capability. Although there are many theoretical and practical difficulties involved in applying this approach to East-West trade, these difficulties can be minimised by a careful selection of product groups. In this connection, advanced chemical products are particularly suitable because the chemical industry is one in which both kilogram-prices and technological sophistication tend to increase hand-in-hand at successive stages of manufacture. The results of this enquiry are quite striking. From the standpoint of bilateral trade, the kilogram-prices of Soviet and East European exports to the EEC countries are consistently lower than those of corresponding imports from the EEC. Throughout the period 1960–1972 these differentials appears to be closing either very slowly or not at all, while the Soviet and East European share of the EEC marked has remained more or less constant or has declined since the mid-1960's. From the alternative perspective of the “neutral” Yugoslavian market, the kilogram-prices of EEC exports are again consistently higher than those obtained by the Comecon coun tries. Moreover, there has been a considerable eroson in the market share of the Comecon countries since the mid-1960's. These general findings are broadly in line with other kinds of estimates and suggest that in these relatively advanced and dynamic sectors of industry, Soviet and East European technology is at present substantially inferior to that of the Common Market countries.  相似文献   
6.
This Special Topic section is on dielectrophoresis, a growing area of widespread interest and relevance to the microfluidics and nanofluidics community.There was a time when the arrival of a telegram from the local post office would foreshadow a step-function change in one’s equilibrium. An internet service provider can now deliver the same effect, as illustrated by an unexpected e-mail from Leslie Yeo inquiring if I would “be interested in guest editing a special issue of Biomicrofluidics on recent advances in dielectrophoresis (DEP).” Flattery directed towards vanity can produce interesting results—which I hope this special issue of Biomicrofluidics demonstrates. The rationale for this special issue is the belief of the journal’s Editors (Dr. Chia Chang and Dr. Leslie Yeo) that dielectrophoresis is a growing area of widespread interest and relevance to the microfluidics and nanofluidics community. Papers, both fundamental and applied, were solicited from the leaders working across this broad interdisciplinary area of research. I was delighted by the positive responses of those whose invited contributions appear in this special issue—efforts certainly not motivated by vanity but through enthusiasm for the subject. Some of those invited to contribute were unable to do so because of other demands on their time. Ongoing advances being made in DEP, especially in its various applications, will surely merit another special issue in the future and hopefully include contributions from those unable to do so now.Two of the papers in this special issue address fundamental aspects of dielectrophoresis (DEP), namely the influences on DEP from electrical double-layers and from particle-particle interactions. Consideration of electrical double layers associated with charged particle surfaces is particularly important for nanoparticles because their effective polarizabilities, associated with field-induced dynamics of the counterions and co-ions in the double layer, can dominate over the intrinsic polarizability of the particle itself. This can influence, for example, to what extent the observation of changes in the DEP crossover frequency (marking the transition between positive and negative DEP) can be relied upon in new immunoassays based on the DEP behavior of functionalized nanoparticles. By considering the electrodynamics of double layers, Basuray et al.1 propose a theory to predict how the DEP crossover frequency will vary as a function of particle size and the ionic strength of the suspending electrolyte. In their paper, Sancho et al.2 derive a theoretical model to describe how particle-particle interactions (e.g., “pearl-chaining”) influence the DEP crossover frequency value. This model also describes well the changes in electrorotation and a newly observed precession effect as particles approach each other under the influence of a rotating field.DEP at the nanoscale is also addressed in contributions from the groups of Ralph Hölzel, Junya Suehiro, and Karan Kaler. Thus, Henning et al.3 describe a new method, based on the measurement of capacitance changes between planar microelectrodes, for the automatic acquisition of the DEP properties of nanoparticles without the need for labeling protocols or visual observations. Suehiro4 describes how DEP can be employed as a bottom-up approach for fabricating nanomaterial-based devices such as a carbon nanotube gas sensor and a ZnO nanowire photosensor. Kaler et al.5 describe how the DEP manipulation of miniscule amounts of polar aqueous samples, a method known as liquid-DEP, can be used for on-chip bioassays, such as nucleic acid analysis, and through parallel sample processing offer the potential for conducting automated multiplexed assays. The use of DEP to selectively trap and separate cells has been investigated over many years, and contributions from the groups of Hywel Morgan, Ana Valero, Masau Washizu, and Gerard Markx describe the latest advances and applications. Thomas et al.6 describe a new automated DEP cell trap design for the isolation, concentration, separation, and recovery of human osteoblast-like cells from a heterogeneous population. Recovery of small populations of human osteoblast-like cells with a purity of 100% is demonstrated. A cell-sorting device, based on the opposition of DEP forces that discriminates between cell types according to such properties as their membrane permittivity and cytoplasm conductivity, is described by Valeroet al.7 The versatility of the device is demonstrated by synchronizing a yeast cell culture at a particular phase of the cell cycle. Gel et al.8 describe a DEP-assisted cell trapping method for fusing pairs of cells in an array of micro-orifices. This method produces not only a high yield of viable cell fusants, but also allows for subsequent study of postfusion cell development. Zhu et al.9 describe a DEP-based microfluidic separation system in which dead and active cells can be collected from a given cell suspension, whilst at the same time eluting dormant cells. In the second paper from Gerard Markx’s group, Zhu et al.10 demonstrate that the rate-limiting resuscitation of a colony of dormant bacteria is determined by the diffusion of a resuscitation-promoting factor into the colony interior. This study involved the artificial engineering of different sizes and shapes of bacterial aggregates using DEP forces. Finally, in my own contribution,11 I have attempted to summarize the growing output of DEP publications in terms of their contributions to the theory, technology, and applications of DEP.  相似文献   
7.
The problem of observing the state of a linear finite dimensional system in the presence of unknown disturbance noise is considered. Necessary and sufficient conditions are developed for the existence of a minimal order observer capable of producing an asymptotic estimate of the state of the given system. The approach used leads to a computationally attractive procedure for obtaining an observer having specified eigenvalues.  相似文献   
8.
This study summarizes prior reviews of new media and Internet research, and the growth of the term Internet in academic publications and online newsgroups. It then uses semantic network analysis to summarize the interests and concepts of an interdisciplinary group of Internet researchers, as represented by session titles and paper titles and abstracts from the 2003 and 2004 Association of Internet Researchers conferences. In both years, the most frequent words appearing in the paper abstracts included Internet, online, community, social, technology, and research. The 2003 papers emphasized topics such as the social analysis/research of online/Internet communication, community, and information, with particular coverage of access, individuals, groups, digital media, culture; role and process in e-organizations; and world development. The 2004 papers emphasized topics such as access; news and social issues; the role of individuals in communities; user-based studies; usage data; and blogs, women, and search policy, among others.  相似文献   
9.
This article is a report of elementary school teachers' beliefs about and uses of text material in science. Survey results from 522 K-8 teachers from 299 schools in the United States, Puerto Rico and the Virgin Islands were analyzed along three dimensions: teacher attitudes toward teaching of reading in science; teacher beliefs and understanding about models of reading, factors influencing science reading and reading skills; and teacher use of various teaching strategies. Results suggest that teachers do not see reading science as different from any other narrative material. And though most agreed to the importance of having students do activities to support and enhance the use of text material, responses suggest that covering topics is still a concern for most elementary teachers.  相似文献   
10.
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