全文获取类型
收费全文 | 16673篇 |
免费 | 685篇 |
国内免费 | 6篇 |
出版年
2020年 | 176篇 |
2019年 | 203篇 |
2018年 | 355篇 |
2017年 | 318篇 |
2016年 | 321篇 |
2015年 | 238篇 |
2014年 | 269篇 |
2013年 | 1239篇 |
2012年 | 501篇 |
2011年 | 530篇 |
2010年 | 305篇 |
2009年 | 282篇 |
2008年 | 429篇 |
2007年 | 429篇 |
2006年 | 387篇 |
2005年 | 339篇 |
2004年 | 321篇 |
2003年 | 278篇 |
2002年 | 313篇 |
2001年 | 602篇 |
2000年 | 573篇 |
1999年 | 402篇 |
1998年 | 165篇 |
1996年 | 152篇 |
1993年 | 145篇 |
1992年 | 319篇 |
1991年 | 330篇 |
1990年 | 315篇 |
1989年 | 290篇 |
1988年 | 287篇 |
1987年 | 279篇 |
1986年 | 280篇 |
1985年 | 273篇 |
1984年 | 250篇 |
1983年 | 195篇 |
1982年 | 156篇 |
1979年 | 243篇 |
1978年 | 161篇 |
1977年 | 153篇 |
1976年 | 142篇 |
1975年 | 204篇 |
1974年 | 244篇 |
1973年 | 276篇 |
1972年 | 221篇 |
1971年 | 211篇 |
1970年 | 199篇 |
1969年 | 206篇 |
1968年 | 280篇 |
1967年 | 212篇 |
1966年 | 233篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
An emergent social science of knowledge applications, drawing on a substantial multidisciplinary literature published over the past twenty-five years, signals an inversion of typical scholarly reasoning about the knowledge-society nexus. Whereas most scholarly research thus far has concentrated on conditions believed to affect the production of scientific and professional knowledge, we pose a new problematic: What must we examine in order to comprehend and consciously shape applications of scientific and professional knowledge to the manifold problems facing contemporary societies? To date, approaches to this problematic have proceeded on the basis of four broadly accepted if abstract theses about the nature of contemporary knowledge systems: subjectivity, corrigibility, sociality, and complexity. Within the boundaries supplied by these commonly accepted theses are unresolved controversies expressed in competing visions of complexity, alternative perspectives of causation, rival images of progress, and conflicting criteria of application. 相似文献
82.
Douglas N. Walton 《Argumentation》1988,2(2):233-254
This paper presents an analysis of the concept of burden of proof in argument. Relationship of burden of proof to three traditional informal fallacies is considered: (i) argumentum ad hominem, (ii) petitio principii, and (iii) argumentum ad ignorantiam. Other topics discussed include persuasive dialoque, pragmatic reasoning, legal burden of proof, plausible reasoning in regulated disputes, rules of dialogue, and the value of reasoned dialogue. 相似文献
83.
This paper describes an amplifier for an electroencephalograph with gain of 1×104 to 1×106 and made entirely of commercially available IC components. The two-stage amplifier has a preamplifier stage with fixed gain of 1000, and a second stage with variable gain from 1 to 100. The final stage, an anti-aliasing filter, adds a gain of 10 to the signal. The circuit has high common mode rejection, low input bias current, very low noise characteristics, low offset voltages, and offset nulling capability built into the circuit. 相似文献
84.
To study malevolent representations, earliest memories were reliably coded on scales of affect tone. Ss were diagnosed with borderline personality disorder: 31 without and 30 with concurrent major depression. Nonborderline comparison subjects had either major depressive disorder (n = 26) or no psychiatric diagnosis (n = 30). Borderline subjects were discriminated from comparison subjects by their more malevolent representations; they more frequently produced memories involving deliberate injury; and they portrayed potential helpers as less helpful. Results suggest the diagnostic significance of malevolent representations, which need to be explained by any theory of borderline personality disorder. 相似文献
85.
We examined the role of reporting bias in hypnotic negative hallucinations by using a paradigm in which reporting bias was assessed independently of perceptual change. In Experiment 1, highly hypnotizable subjects reported significant loudness reductions when tested for hypnotic deafness. Later, however, these subjects biased their reported loudness reductions in the absence of perceptual change, and their reporting bias scores were almost as large as their hypnotic deafness reports. Subjects also biased their ratings of strategy use. In Experiment 2, ratings of blindness given in response to a hypnotic negative visual hallucination suggestion were significantly correlated with reporting bias scores obtained in this paradigm. Although hypnotic blindness and hypnotic deafness correlated significantly, the partial correlation between these variables was nonsignificant when reporting bias scores were statistically controlled. Theoretical implications are discussed. 相似文献
86.
To test Coyne's (1976b) theory of depression, students' levels of depressive symptoms, reassurance seeking, and self-esteem were assessed at Time 1, and their same-gender roommates' appraisals of them were assessed 5 weeks later. Mildly depressed students engaged in the type of reassurance seeking described by Coyne. Among men, but not women, mildly depressed students were rejected if they strongly sought reassurance and had low self-esteem but not if they did not seek reassurance or had high self-esteem. Although induction of depressed symptoms in roommates did occur, this contagion effect did not account for the depression-rejection relationship. The prediction that unsupportive, intolerant, or unempathic others would be particularly likely to respond with rejection to reassurance-seeking depressed students with low self-esteem received partial support. Implications for future work on the interpersonal aspects of depression are discussed. 相似文献
87.
A consecutive sample of mid- and late-life bereaved spouses were randomly assigned to treatment and no-treatment groups. Two hypotheses were tested: (1) that brief group psychotherapy during the early stages of loss would facilitate adjustment assessed by measures of mental health, positive psychological states, social role, and mourning; and (2) that positive effects would be maximized for subjects who were more distressed psychologically. Although group participants, compared with untreated controls, did over 1 year show modest improvement on role functioning and positive psychological states, overall the study failed to find substantial support for the two major hypotheses. Both experimental and control groups showed improvement over the year, particularly on measures of mental health and mourning. Differential benefit was not observed for the high-risk group. 相似文献
88.
LYMAN C. WYNNE M.D. Ph.D. CLEVELAND G. SHIELDS Ph.D. MARK I. SIRKIN Ph.D. 《Family process》1992,31(1):3-18
This article examines and clarifies controversies about the concept of illness in the field of family therapy. We contend that illness, as traditionally understood in all cultures, is a relational, transactional concept that is highly congruent with core principles of present-day family theories. Family therapists need not buy into a biotechnical, reductionistic reframing of illness as disease. Rather, it is more appropriate to conceptualize and work with illness as a narrative placed in a biopsychosocial context. Such a narrative includes how shared responsibility for coping and for finding solutions can take place, without becoming involved in disputes about causal models. 相似文献
89.
Several hypotheses derived from P. Brown and Levinson's (1987) politeness theory were tested with Ss from the United States and Korea. Ss imagined themselves in situations in which they were to make a request. They then indicated exactly what they would say in each situation and what their perceptions of the request size, the hearer's power, and the closeness of their relationship with the hearer were. Consistent with P. Brown and Levinson's theory, power, distance, and size contributed significantly to politeness. Significant predictor variable interactions suggested that an additive model is not appropriate. Finally, there was evidence of cultural and gender differences in the weighting of these predictor variables. These differences can partially account for cultural and gender differences in language use. 相似文献
90.
Defensive reactions to aid in the context of a close relationship were studied. Young adult siblings reported on their self-esteem, the quality of the sibling relationship, relevant demographic variables, and a variety of components of defensiveness to aid. Consistent with theory, the components of defensiveness were interrelated. A large percentage (52%) of the variance in defensiveness was accounted for by conflict between siblings, dominance relative to one's sibling, low global self-esteem, high self-esteem when comparing oneself with one's sibling, and low levels of feelings of entitlement. Siblings were least defensive in reaction to aid from older and female siblings. Corroboration from a subset of benefactor siblings was obtained. The results are discussed in relation to recent thinking about the nature of receiving support in close relationships and recipients' reactions to aid. 相似文献