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811.
In a study among 72 nurses, the affective consequences of social comparison were examined and related to neuroticism (N) and to social comparison orientation (SCO). Participants were confronted with a bogus interview with an upward versus a downward comparison target. Positive affect and identification were higher, and negative affect was lower, in the upward than in the downward comparison condition. Independent of their SCO, the higher individuals were in N, the less they identified with the upward comparison target, the more they identified with the downward comparison target, and the less positive affect they showed following confrontation with the upward comparison target. In contrast, independent of their level of N, the higher individuals were in SCO, the more negative affect they showed following confrontation with the downward comparison target. The effects on negative affect stayed the same when controlling for positive affect, and the effects on positive affect stayed the same when controlling for negative affect. These effects were also obtained when perceived direction was used as a predictor instead of the experimentally manipulated direction. It is concluded that, although N and SCO are correlated, these variables seem to have independent and distinct effects upon the responses to social comparison information. 相似文献
812.
Adding material that provided an associative connection to a pun enhances perceived humor, as shown in a previous series of studies. Because those results had been based on one-sentence statements that may have relied, in part, on brevity for humor, the purpose of the present study was to evaluate reactions to context and puns (mostly spoonerisms) with more lengthy material to add generality to those findings. Three within-subject studies were conducted in which short fables were manipulated systematically such that the final sentence was or was not a pun and contextual information pertaining to both meanings of the pun was or was not present in the body of the stories. Results showed that the pun itself was a powerful contributor to perceived humor and cleverness and that contextual information amplified those perceptions. Arousal, surprise, and detection of appropriate incongruity are discussed. 相似文献
813.
A theoretical framework based on the concepts and tools of nonlinear dynamical systems is advanced to account for both the persistent and transitory changes traditionally shown for the learning and development of motor skills. The multiple time scales of change in task outcome over time are interpreted as originating from the system's trajectory on an evolving attractor landscape. Different bifurcations between attractor organizations and transient phenomena can lead to exponential, power law, or S-shaped learning curves. This unified dynamical account of the functions and time scales in motor learning and development offers several new hypotheses for future research on the nature of change in learning theory. 相似文献
814.
We investigated prospectively the relationship of Type A behavior and its subcomponents with cardiac mortality and recurrent nonfatal cardiac events in a 2-yr. follow-up of 90 patients [69 men and 21 women, M age=56.4 yr., SD=8.4] after acute coronary syndrome. Type A behavior was assessed via the general Bortner Type A Index. Each patient completed the Bortner's scale before hospital discharge. During the first 2-yr. follow-up, there were 14 cardiac deaths among patients with myocardial infarction. 8 patients had recurrent cardiac events and were hospitalized, and 19 patients had an effort-induced angina pectoris. Patients with acute myocardial infarction who died during follow-up had a significantly lower Bortner score than patients with a secondary cardiac event. Bortner scores of patients with acute myocardial infarction who died indicated Type B behavioral patterns. Mortality was significantly higher in the patients classified as showing Type B (21.8%) behavior than in the patients classified as showing Type A (12.0%) behavior. Patients with a secondary cardiac event had more common Type A behavior patterns and higher Bortner scores than patients without a secondary cardiac event. The items on Bortner's scale "very competitive, ever rushed, tries to do too many things at once, fast in daily activities and expresses feelings" were inversely associated with cardiac deaths. These findings suggest that patients with acute coronary syndrome classified by scores on the Bortner scale as Type B behavior have a greater probability of death, and patients classified on the Bortner scale as Type A behavior have a greater probability of secondary cardiac events during follow-up. This finding may have implications for the treatment of patients with acute coronary syndrome. The inferior survival of patients with Type B personalities argues against attempts to modify Type A behavior in postinfarction patients. 相似文献
815.
We investigated the temporal properties of the red - green, blue-yellow, and luminance mechanisms in a contour-integration task which required the linking of orientation across space to detect a 'path'. Reaction times were obtained for simple detection of the stimulus regardless of the presence of a path, and for path detection measured by a yes/no procedure with path and no-path stimuli randomly presented. Additional processing times for contour integration were calculated as the difference between reaction times for simple stimulus detection and path detection, and were measured as a function of stimulus contrast for straight and curved paths. We found that processing time shows effects not apparent in choice reaction-time measurements. (i) Processing time for curved paths is longer than for straight paths. (ii) For straight paths, the achromatic mechanism is faster than the two chromatic ones, with no difference between the red-green and blue-yellow mechanisms. For curved paths there is no difference in processing time between mechanisms. (iii) The extra processing time required to detect curved compared to straight paths is longest for the achromatic mechanism, and similar for the red - green and blue-yellow mechanisms. (iv) Detection of the absence of a path requires at least 50 ms of additional time independently of chromaticity, contrast, and path curvature. The significance of these differences and similarities between postreceptoral mechanisms is discussed. 相似文献
816.
Aerial respiratory behavior in Lymnaea was operantly conditioned so that the animals perform aerial respiration significantly less often. Using the standard training procedure (pond water made hypoxic by bubbling N2 through it) both food-deprived and fed animals learned and exhibited long-term memory (LTM). However, food-deprived animals exhibited neither learning nor memory when trained under a condition in which the hypoxic pond water also contained a food odorant (carrot, the food-odorant procedure). Fed animals, however, learned and exhibited LTM with the food-odorant procedure. Thus, the presence of the food odorant per se did not prevent learning or the establishment of LTM. Further experimentation, however, revealed that the ability of the snails to have recall (i.e., memory) for the learned behavior was dependent on the context in which memory was tested. That is, if animals were trained with the food-odorant procedure they could only exhibit recall if tested in the food-odorant context and vice versa with the standard training procedure. Thus, although fed animals could learn and show LTM with either training and testing procedure, LTM could only be seen when they were tested in the context in which they were trained. 相似文献
817.
Authors tested the validity of the Peabody Picture Vocabulary Test-Third Edition (PPVT-III) as a screening measure for intelligence and achievement. The PPVT-III and Kaufman Assessment Battery for Children (KABC) were administered to 416 African American children of low socioeconomic status in a counterbalanced design. Results indicated that the PPVT-III correlated .58 with the KABC Mental Processing Composite (MPC) score; however, participants scored significantly lower (M = 8.3 points) on the PPVT-III than on the MPC. Although receiver operating characteristic (ROC) analyses supported the use of the PPVT-III as a valid intellectual and achievement screener, the selection of a single cutoff score for the PPVT-III was problematic. The purpose of the screening program should guide selection of a cutoff score for the PPVT-III. 相似文献
818.
For many researchers, eye-movement measures have become instrumental in revealing the moment-to-moment activity of the mind during reading. In general, there has been a great deal of consistency across studies within the eye-movement literature, and researchers have discovered and examined many variables involved in the reading process that affect the nature of readers' eye movements. Despite remarkable progress, however, there are still a number of issues to be resolved. In this article, we discuss three controversial issues: (1) the extent to which eye-movement behavior is affected by low-level oculomotor factors versus higher-level cognitive processes; (2) how much information is extracted from the right of fixation; and (3) whether readers process information from more than one word at a time. 相似文献
819.
Ashley K Fernandes 《Christian Bioethics: Non-Ecumenical Studies in Medical Morality》2001,7(3):379-402
The lack of consensus in American society regarding the permissibility of assisted suicide and euthanasia is due in large part to a failure to address the nature of the human person involved in the ethical act itself. For Karol Wojtyla, philosopher and Pope, ethical action finds meaning only in an authentic understanding of the person; but it is through acting (actus humanus) alone that the human person reveals himself. Knowing what the person ought to be cannot be divorced from what he ought to do; for Wojtyla, the structure of the ethical "do"--the act itself--comes first. The current paper will focus on four arguments used to justify assisted suicide and euthanasia: (1) the argument from autonomy, (2) the argument from compassion, (3) the argument from the evil of suffering, and (4) the argument from the loss of dignity. It will seek to answer each claim from the perspective of Karol Wojtyla's philosophical anthropology. Much of this will come from his defining work in pure philosophy, The Acting Person (1969). The final part of the paper will suggest some positive solutions to the stalemate over the euthanasia debate, again drawn from Wojtyla's idea of human fufillment through participation with the other, and with the community itself. 相似文献
820.
Given recent court decisions, there is a need to investigate less common forms of sexual harassment, including women harassing men and same-gender harassment. The present study was a 2 (harasser gender) x 2 (target gender) x 2 (participant gender) factorial design in which 408 mock jurors made decisions in a hostile work environment case. Women harassing men were more likely to be found guilty than were men harassing women, and harassers in same-gender cases were more likely to be found guilty and were perceived more negatively than harassers in cross-gender cases. Participant gender differences were found in cross-gender, but not same-gender, conditions. Results suggest that the gender composition of the harasser and target may be an extralegal factor influencing managerial and juror decision making. 相似文献