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This research advances our understanding of disruptions to marketing channels in the digital world by investigating the viability of consumer cooperative systems which are envisioned as multi-actor constructed networks using social media (SM) platforms. It introduces the concepts of “social media consumer wine cooperator” as a new distribution channel for wine and investigates the consumer's intention to participate in an SM and become a wine cooperator. Relying on the uses and gratifications theory (UGT), we adopted a quantitative research inquiry with data gathered using an online survey involving a sample of 486 French consumers. We empirically tested the relationships among four factors: attitude toward buying wine based on SM recommendations, perceived risks, intention to buy wine on SM, and consumer intention to become an SM wine cooperator. Findings indicate that the intention to be an SM wine cooperator is positively correlated with attitude toward buying wine based on SM recommendations and the intention to purchase wine on SM. To finish with, we link the concept of the consumer wine co-op to the current debate in the literature on centralized versus decentralized (built on top of blockchain networks) social media platforms, opening the door for future research avenues.  相似文献   
145.
There has been much controversy over the past decades on the origins of gender differences in children's aggressive behavior. A widely held view is that gender differences emerge sometime after 2 years of age and increase in magnitude thereafter because of gender-differentiated socialization practices. The objective of this study was to test for (a) gender differences in the prevalence of physical aggression in the general population of 17-month-old children and (b) change in the magnitude of these differences between 17 and 29 months of age. Contrary to the differential socialization hypothesis, the results showed substantial gender differences in the prevalence of physical aggression at 17 months of age, with 5% of boys but only 1% of girls manifesting physically aggressive behaviors on a frequent basis. The results suggest that there is no change in the magnitude of these differences between 17 and 29 months of age.  相似文献   
146.
In studies of postural control, investigators have used either experimentally induced perturbations to stance or unperturbed stance. The distinction between perturbed and unperturbed stance has gained renewed importance in the context of inphase and antiphase coordination of the hips and ankles. Several contributions have replicated the findings published over the past decade, suggesting the possibility of a unified view of postural control. However, any proposed unified view depends on how so called perturbed and unperturbed are defined. The authors argue that, to date, there is no explicit and general definition of those terms. The main reason is that all perturbations are relative and depend on appropriate frames of reference for perception and action. Arguments about empirical or theoretical unification of perturbed and unperturbed stance are premature.  相似文献   
147.
Common cuckoos (Cuculus canorus) are obligate brood parasites, laying eggs into nests of small songbirds. The cuckoo hatchling evicts all eggs and young from a nest, eliminating hosts’ breeding success. Despite the consistently high costs of parasitism by common cuckoos, great reed warbler (Acrocephalus arundinaceus) hosts sometime accept and other times reject parasitic eggs. To explore the cognitive basis of this seemingly maladaptive variation in host responses, we documented differences in egg rejection rates within 1-day periods just before and during the egg-laying cycle across host nests. Hosts rejected cuckoo eggs at 28% of nests during the pre-egg-laying stage, but when cuckoos exchanged the first host egg with the parasite egg, rejections increased to 75%. Even later, when several host eggs remained in a nest after parasitism, rejection rate fell to 37.5%. Experimental parasitism with conspecific eggs on the first and second day of host laying showed a similar directional change in relative rejection rates, dropping from 35 to 0%. Mistakes in egg discrimination (ejection error and ejection cost) were observed mostly in the latter part of the laying cycle, mainly when nests contained 5–6 eggs. These correlational and experimental patterns of egg rejection support a cognitive process of egg discrimination through several shifts in hosts’ optimal acceptance thresholds of foreign eggs. The results are also consistent with the evolution of foreign egg rejection in the context of nest-sanitation (i.e. the removal of foreign objects). Our results suggest that common cuckoo hosts may recognize more eggs than they reject. This implies that the experience of the host with one or more of its own eggs in the clutch is a key factor in rejecting parasite eggs by allowing inspection and learning about their own clutch.  相似文献   
148.
Earlier work has shown that free recall tasks produce a robust mood-congruent memory effect in depression, whereas recognition tasks produce heterogeneous results. This study aimed to further investigate recognition memory for positive, negative and neutral words in depressed patients and matched comparison participants with the Remember/Know/Guess procedure for assessing recollection and familiarity. No mood-congruent memory bias effect was detected in discrimination abilities. However, depressed patients recollected (more Remember responses) more negative than positive or neutral words, whereas comparison participants recollected more positive than neutral words. No mood-congruent pattern was evidenced for Know responses. However, the depressed patients responded to fewer words overall with Know responses than the comparison participants. These results suggest that the mood-congruent memory pattern in depressed patients is related to conscious recollection rather than to familiarity. Attentional biases toward negative words and elaboration processes and/or encoding in reference to the self may contribute to these findings.  相似文献   
149.
The worldwide upsurge in social polarizations generates intercommunity tensions that challenge the social fabric of urban neighborhoods and undermine the relationships between their members. Because community arts can foster the creation of connections between people that would not have been in contact otherwise, they are often perceived as being powerful tools to foster community resilience. Through a multiple case study approach, this article describes how three community arts projects, carried out in two socioeconomically deprived neighborhoods of Montreal (Canada), influenced the social relationships between participants from diverse ethnocultural backgrounds and generations. Using participant observation and arts-based data collection methods (photography, video, and arts productions), the authors examine how the three projects illustrate (a) the interactive processes at play, (b) the transmission and hybridization of stories and images of adversity and resiliency, and (c) the access to a collective voice.  相似文献   
150.
Two models have been advanced to account for the apparent ease with which attention can be divided in music: a “divided attention” model postulates that listeners effectively manage to follow two or more melodic lines played simultaneously. According to a “figure‐ground model,” the harmonic coherence of Western polyphonies allows a listener to focus on one melody while staying aware of the other melody, which acts as a background. This figure‐ground processing compensates for the inability to divide attention. The present study was designed to further investigate these two models. Participants were required to detect melodic errors in two familiar nursery tunes played simultaneously an octave apart. The divided‐attention model predicted that this task would be easily performed by participants, irrespective of the key of the nursery tune. The figure‐ground model predicted better performance when the keys of the tunes were identical or closely related. None of these predictions was fully supported by the data, leading us to propose a new “integrative model” of listening to polyphonic music.  相似文献   
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