全文获取类型
收费全文 | 33366篇 |
免费 | 587篇 |
国内免费 | 14篇 |
出版年
2023年 | 72篇 |
2021年 | 117篇 |
2020年 | 213篇 |
2019年 | 262篇 |
2018年 | 3724篇 |
2017年 | 3083篇 |
2016年 | 2541篇 |
2015年 | 448篇 |
2014年 | 413篇 |
2013年 | 1585篇 |
2012年 | 1142篇 |
2011年 | 2949篇 |
2010年 | 2815篇 |
2009年 | 1840篇 |
2008年 | 2195篇 |
2007年 | 2654篇 |
2006年 | 589篇 |
2005年 | 718篇 |
2004年 | 634篇 |
2003年 | 604篇 |
2002年 | 543篇 |
2001年 | 272篇 |
2000年 | 270篇 |
1999年 | 230篇 |
1998年 | 218篇 |
1997年 | 229篇 |
1996年 | 199篇 |
1995年 | 169篇 |
1994年 | 159篇 |
1993年 | 153篇 |
1992年 | 140篇 |
1991年 | 152篇 |
1990年 | 141篇 |
1989年 | 121篇 |
1988年 | 89篇 |
1987年 | 117篇 |
1986年 | 127篇 |
1985年 | 162篇 |
1984年 | 161篇 |
1983年 | 138篇 |
1982年 | 130篇 |
1981年 | 143篇 |
1980年 | 124篇 |
1979年 | 108篇 |
1978年 | 118篇 |
1977年 | 108篇 |
1976年 | 108篇 |
1975年 | 94篇 |
1974年 | 106篇 |
1973年 | 85篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
221.
222.
David D. Clark 《Journal of counseling and development : JCD》1966,44(8):817-823
Factual and subjective data gathered from counseling centers in 36 major universities is presented to show present conditions, emphasis, and needs of the future. Data are presented showing ratios of counselors to students, budget allotments, strengths, specific weaknesses, etc. Counseling facilities, services provided, emphasis, communications and plans for expansion are dealt with individually. Less than half the centers were meeting student needs and a majority indicated a shortage of professional staff, particularly those competent to do personal adjustment counseling. 相似文献
223.
David V. Budescu Thomas S. Wallsten 《Organizational behavior and human decision processes》1990,46(2)
The goal of the research was to compare decisions under risk in a situation in which forecasters (F) communicate to decision makers (DM) either numerically (e.g., .70) or verbally (e.g., likely) about the chances that a binary event will occur. Following each forecast, the DM bid for a winning or losing lottery based on the event. In Experiment 1 Fs and DMs also provided numerical translations of each verbal forecast after the DMs' bid. In Experiment 2 the DMs provided membership functions over the [0, 1] interval for each phrase used by the Fs. The primary results were: (a) extreme similarity in the DM's bids and rates of bidding under the two modes of communication; (b) greater variability in bids to specific verbal than numerical forecasts; (c) a pattern of bids, in which DMs demonstrated risk seeking for gains and risk neutrality for losses; (d) DMs' numerical translations in Experiment 1 were closer to .50 than were those of Fs; and (e) phrases selected by Fs had high membership values to DMs for the probabilities the Fs were attempting to describe. Points (a), (b), (d), and (e) are consistent with the ν-μ model which assumes that the vague meaning of a probability phrase can be represented by a membership function over the [0, 1] interval, and that in reaching a decision the DM focuses on a range of probabilities with sufficiently high membership. Point (c) is speculatively attributed to social aspects of the dyadic situation, and requires further investigation. 相似文献
224.
225.
226.
What we usually think of as higher order skills in argumentation can be profitably viewed as systematic structures for organizing and representing information. Standard terms like line of argument, synthesis, analysis and draft can be viewed as ways of constructing, storing, and accessing data in a social context — data structures for social communication. What makes argument difficult are the multiple structures that arguers have to construct and negotiate when reading and composing. In this paper, we describe the WARRANT project, a project designed to identify data structures of written argument and to design and implement computer tools to aid in the reading and design of argument. 相似文献
227.
Hardware and software modifications are presented that allow for collection and recognition by a Commodore computer of spoken responses. Responses are timed with millisecond accuracy and automatically analyzed and scored. Accuracy data for this device from several experiments are presented. Potential applications and suggestions for improving recognition accuracy are also discussed. 相似文献
228.
Tachistoscopic presentation of stimuli on IBM PC-compatible computers is limited by a number of factors, including video retrace rates, screen scrolling, and the shape and density of picture elements. A method is presented for overcoming these difficulties through the use of enhanced graphic adapters or video graphic arrays. A C-language program demonstrates (1) synchronous scroll-free displays achieved by writing alternating images to “hidden” pages of video memory, (2) alternative techniques for erasing images, and (3) use of an empirically derived aspect ratio to produce symmetrical figures. 相似文献
229.
Abstract— Subjects' judgments of the mean of 12 scores were influenced by the way in which the scores were dichotomized. The estimated mean was higher when the three highest scores formed one group (e.g., payments for women) and the nine lowest formed the other (e.g., payments for men) than when the nine highest were one group and the three lowest the other. We call this phenomenon the Will Rogers Illusion (WRI). The WRI occurred only when estimates of the subgroup means were made prior to the estimates of the mean of the whole group. When the latter mean was judged first, the WRI was reversed. These and other data indicate that the means of subgroups can influence judgments of group means, a finding that is relevant to research on social stereotypes. 相似文献
230.