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排序方式: 共有59条查询结果,搜索用时 62 毫秒
1.
In three experiments, we investigated the contextual control of attention in human discrimination learning. In each experiment, participants initially received discrimination training in which the cues from Dimension A were relevant in Context 1 but irrelevant in Context 2, whereas the cues from Dimension B were irrelevant in Context 1 but relevant in Context 2. In Experiment 1, the same cues from each dimension were used in Contexts 1 and 2, whereas in Experiments 2 and 3, the cues from each dimension were changed across contexts. In each experiment, participants were subsequently shifted to a transfer discrimination involving novel cues from either dimension, to assess the contextual control of attention. In Experiment 1, measures of eye gaze during the transfer discrimination revealed that Dimension A received more attention than Dimension B in Context 1, whereas the reverse occurred in Context 2. Corresponding results indicating the contextual control of attention were found in Experiments 2 and 3, in which we used the speed of learning (associability) as an indirect marker of learned attentional changes. Implications of our results for current theories of learning and attention are discussed.  相似文献   
2.
This article considers the role of domestic knowledge capabilities for developing countries and emerging economies, and in particular in the build-up of their national systems of innovation. Using bibliometric methods, we describe the geographic sources of knowledge and the users of Brazilian research in 2005–2009, and analyze the roles of domestic and foreign knowledge bases in it. Our results suggest that increasing reliance on domestic sources of knowledge is a feature of Brazil's improved science and technology capabilities. The ascendancy of Brazil's research informs us about the unfolding re-organization of global research, too, underlining nascent South-South knowledge flows, the prevailing relevance of EU research, and the relative decline of US research for Brazilian knowledge creation.  相似文献   
3.
Allen Koenig's Labor Relations in Broadcasting  相似文献   
4.
This article uses the theoretical and methodological framework of Grounded Practical Theory (GPT) to provide a lens for analyzing and interpreting discourse as a situated form of social action in routine Type 2 diabetes visits. Drawing on a total data-set of 400 audio-recorded routine visits, we randomly selected 55 visits for qualitative analysis. In this article, we use Conversation Analysis to document communication techniques, which we in turn use as evidence to ground our claims within the GPT framework. We use two single cases of interaction to analyze communication techniques physicians use when recommending a change from oral medication to insulin. We argue treatment intensification is a key moment in health communication to reflect about patient centeredness because physicians can find themselves in an interactional dilemma: while insulin may effectively help control unstable disease, an insulin recommendation may simultaneously counter patient values and treatment preferences. Our analysis suggests that physicians use what we call interactional sensitivity to balance medical need and patient preferences when making medical decisions by tailoring their communication according to the local situation and the patient's larger illness trajectory. We propose that interactional sensitivity is a type of communication work and a quality of patient-centered communication characterized by the theoretical relationship between tailoring communication to the contingencies of the local interaction and the global illness trajectory. Overall, this article contributes to health communication scholarship by proposing a normative model for reflecting on how physicians negotiate challenging interactions with patients during routine chronic illness visits.  相似文献   
5.
This study examines pharmaceutical research from a bibliometric perspective. It finds that there are bibliometric correlates of successful pharmaceutical research, in particular, the number and proportion of star (highly cited) clinical medical articles. The research also reveals that pharmaceutical company research reported in basic biomedical research journals is very highly cited, on a par with NIH supported medical school research. The policy implications of this are discussed. In addition, the pharmaceutical output (approved new drugs)/input (R&D budget) measures developed permit a ranking and characterization of the research performance of 24 major pharmaceutical companies.  相似文献   
6.
The classification of journal titles into fields or specialties is a problem of practical importance in library and information science. An algorithm is described which accomplishes such a classification using the single-link clustering technique and a novel application of the method of bibliographic coupling. The novelty consists in the use of two-step bibliographic coupling linkages, rather than the usual one-step linkages. This modification of the similarity measure leads to a marked improvement in the performance of single-link clustering in the formation of field or specialty clusters of journals. Results of an experiment using this algorithm are reported which grouped 890 journals into 168 clusters. This scope is an improvement of nearly an order of magnitude over previous journal clustering experiments. The results are evaluated by comparison with an independently derived manual classification of the same journal set. The generally good agreement indicates that this method of journal clustering will have significant practical utility for journal classification.  相似文献   
7.
Koenig MA 《Child development》2012,83(3):1051-1063
Children's sensitivity to the quality of epistemic reasons and their selective trust in the more reasonable of 2 informants was investigated in 2 experiments. Three-, 4-, and 5-year-old children (N = 90) were presented with speakers who stated different kinds of evidence for what they believed. Experiment 1 showed that children of all age groups appropriately judged looking, reliable testimony, and inference as better reasons for belief than pretense, guessing, and desiring. Experiment 2 showed that 3- and 4-year-old children preferred to seek and accept new information from a speaker who was previously judged to use the "best" way of thinking. The findings demonstrate that children distinguish certain good from bad reasons and prefer to learn from those who showcased good reasoning in the past.  相似文献   
8.
This study investigates how children negotiate social norms with peers. In Study 1, 48 pairs of 3‐ and 5‐year‐olds (N = 96) and in Study 2, 48 pairs of 5‐ and 7‐year‐olds (N = 96) were presented with sorting tasks with conflicting instructions (one child by color, the other by shape) or identical instructions. Three‐year‐olds differed from older children: They were less selective for the contexts in which they enforced norms, and they (as well as the older children to a lesser extent) used grammatical constructions objectifying the norms (“It works like this” rather than “You must do it like this”). These results suggested that children's understanding of social norms becomes more flexible during the preschool years.  相似文献   
9.
10.
This paper empirically explores ways in which marketers of higher education can contribute to the important task of cultivating alumni philanthropy. Advancement professionals understand that philanthropy is influenced by wealth and affinity. As marketers, we anticipate that our contribution resides with investments in building affinity. Using survey data that measure the affinity of alumni of a large US university who have been commercially screened to reveal individual wealth, this paper provides empirical evidence of the relative contributions of affinity and wealth to giving. Logistic regression analysis reveals that affinity has a greater impact on predicting the likelihood of giving than other variables, including prior giving and wealth. Important to marketers, this study emphasizes the importance of building affinity and also uncovers obstacles to affinity formation. This information can be used to bridge and repair alumni relationships with their alma mater and inform segmented marketing communications to foster alumni enthusiasm for giving.  相似文献   
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