全文获取类型
收费全文 | 667篇 |
免费 | 23篇 |
专业分类
690篇 |
出版年
2023年 | 4篇 |
2022年 | 3篇 |
2021年 | 9篇 |
2020年 | 7篇 |
2019年 | 6篇 |
2018年 | 17篇 |
2017年 | 16篇 |
2016年 | 18篇 |
2015年 | 13篇 |
2014年 | 16篇 |
2013年 | 77篇 |
2012年 | 30篇 |
2011年 | 33篇 |
2010年 | 26篇 |
2009年 | 18篇 |
2008年 | 37篇 |
2007年 | 29篇 |
2006年 | 26篇 |
2005年 | 30篇 |
2004年 | 24篇 |
2003年 | 25篇 |
2002年 | 21篇 |
2001年 | 13篇 |
2000年 | 18篇 |
1999年 | 17篇 |
1998年 | 13篇 |
1997年 | 7篇 |
1996年 | 9篇 |
1995年 | 9篇 |
1994年 | 15篇 |
1993年 | 8篇 |
1992年 | 8篇 |
1991年 | 9篇 |
1990年 | 3篇 |
1989年 | 6篇 |
1988年 | 9篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 4篇 |
1984年 | 6篇 |
1983年 | 3篇 |
1982年 | 5篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1979年 | 5篇 |
1978年 | 5篇 |
1976年 | 2篇 |
1975年 | 7篇 |
1974年 | 3篇 |
1973年 | 4篇 |
排序方式: 共有690条查询结果,搜索用时 15 毫秒
151.
152.
153.
154.
155.
José-de-Jesús Lavalle-Martínez Manuel Montes-y-Gómez Luis Villaseñor-Pineda Héctor Jiménez-Salazar Ismael-Everardo Bárcenas-Patiño 《Studia Logica》2018,106(2):371-395
The concept of polarity is pervasive in natural language. It relates syntax, semantics and pragmatics narrowly (Giannakidou, in: Maienborn, von Heusinger, Portner (eds.), Semantics: an international handbook of natural language meaning, De Gruyter Mouton, Berlin, 2011; Israel in The grammar of polarity: pragmatics, sensitivity, and the logic of scales, Cambridge studies in linguistics, Cambridge University Press, Cambridge, 2014), it refers to items of many syntactic categories such as nouns, verbs and adverbs. Neutral polarity items appear in affirmative and negative sentences, negative polarity items cannot appear in affirmative sentences, and positive polarity items cannot appear in negative sentences. A way of reasoning in Natural Language is through Natural Logic (van Benthem in Essays in logical semantics, vol. 29 of Studies in linguistics and philosophy, Reidel, Dordrecht, 1986; Language in action: categories, lambdas, and dynamic logic, vol. 130 of Studies in logic, Elsevier, Amsterdam, 1991). This logic is based on the concept of polarity in order to make the meaning of a sentence weaker o stronger without changing its truth value. There exist many proposals to compute polarity in the Natural Logic context, the most widely known are the ones by: van Benthem (1986, 1991), Sánchez-Valencia (Studies on natural logic and categorial grammar, Ph.D. thesis, Universiteit van Amsterdam, 1991), Dowty (Proceedings of the 4th conference on semantics and theoretical linguistics, Cornel University, CLC Publications, Rochester, 1994), and van Eijck (in: ten Cate, Zeevat (eds.), 6th international Tbilisi symposium on logic, language, and computation, Batumi, Georgia, Springer, 2007). If Natural Logic is going to be used, as an inferential mechanism between text fragments, in Natural Language Processing applications such as text summarization, question answering, and information extraction, it is a priority to know what the existing relationship among the aforementioned algorithms is; for example, to implement the most general. We show in this paper the equivalence among the analyzed algorithms, filling a gap in Natural Logic research, particularly in computing polarity, and the soundness of their algorithms. 相似文献
156.
Recent interventions have focused upon play dates as a means to improve friendships. However, no measures have been published
which quantify play date quality. An important characteristic of play dates in this regard may be the amount of conflict.
We present the development of such a measure. We compare maternal reports of play dates for 112 community subjects with 48
subjects referred for peer problems (mean age = 8.7 years). We found that clinic–referred subjects had significantly fewer
hosted and invited play dates than the community subjects. The mean conflict on play dates was significantly lower for the
community subjects than for the clinic-referred subjects. We obtained significant correlations between conflict on play dates
and measures of problem behaviors. Our results support the position that conflict on play dates is an important area to target
in social skills training programs. The scale may prove useful to clinicians and researchers by facilitating screening and
assessing interventions directed towards improving play dates. 相似文献
157.
The reading achievement of children and adolescents with Attention Deficit Hyperactivity Disorder (ADHD) has scarcely been explored in research conducted in the Spanish language and when it has, the results have been contradictory. The focus of the present research is to analyze participants' reading competency and metacognitive strategies as they carry out reading comprehension tasks. The sample was comprised of 187 Argentine schoolchildren aged 9 to 13 years old. 94 constituted the control group and the clinical group consisted of 93 schoolchildren diagnosed with ADHD. The metacognitive assessment was made up of two metacognitive tests, the Reading Awareness Scale (ESCOLA; acronym in Spanish) and a Spanish adaptation of Metacognitive Awareness of Reading Strategies Inventory (MARSI), and one test of reading comprehension, the Evaluation of Reading Processes for Secondary Education Students (PROLEC-SE; acronym in Spanish). Students with ADHD had lower achievement on tests o reading comprehension compared to the control group. Nevertheless, our results suggest their difficulties did not stem from readin comprehension problems, but rather from alterations in their Executive Functions, because when subjects' reading comprehensio was equalized, students with ADHD still exhibited a lower level of Metacognition, particularly when it came to planning. 相似文献
158.
Using a sample of 328 White, Latino, and Black Los Angeles County adults, the authors examined the tendency to employ various affirmative action "frames" (e.g., affirmative action as a "tie-breaking" device or as a quota-based policy). All three groups agreed about which frames cast affirmative action in a positive light and which cast it in a negative light. Although minorities had a tendency to frame affirmative action in terms that most people find morally acceptable, Whites had a tendency to frame affirmative action in terms most people find unacceptable. In addition, compared to minorities, Whites were less supportive of affirmative action regardless of how it was framed. LISREL modeling also was employed to test two competing models regarding predictors of the tendency to use frames that one personally finds to be relatively negative versus positive. Consistent with the expectations of social dominance theory and a motivated cognition perspective, the authors found that social dominance orientation (SDO) had significant net direct and indirect effects on one's framing of affirmative action. 相似文献
159.
Previous work has shown that recalling information from long-term memory can impair the long-term retention of related representations—a phenomenon known as retrieval-induced forgetting (Anderson, Bjork, & Bjork, 1994). We report an experiment in which the question of whether retrieval is necessary to induce this form of impairment was examined. All the subjects studied six members from each of eight taxonomic categories (e.g.,fruit orange). In the competitive practice condition, the subjects practiced recalling three of the six members, using category-stem cues (e.g.,fruit or____). In the noncompetitive practice condition, the subjects were reexposed to these same members for the same number of repetitions but were asked to recall the category name by using the exemplar and a stem as cues (e.g.,fr____orange). Despite significant and comparable facilitation of practiced items in both conditions, only the competitive practice subjects were impaired in their ability to recall the nonpracticed members on a delayed cued-recall test. These findings argue that retrieval-induced forgetting is not caused by increased competition arising from the strengthening of practiced items, but by inhibitory processes specific to the situation of recall. 相似文献
160.
Jim Stone 《Philosophical Studies》2009,142(2):153-160
Here is a simple counterexample to David Lewis’s causal influence account of causation, one that is especially illuminating
due to its connection to what Lewis himself writes: it is a variant of his trumping example
相似文献
Jim StoneEmail: |