全文获取类型
收费全文 | 1002篇 |
免费 | 26篇 |
国内免费 | 7篇 |
出版年
2023年 | 9篇 |
2020年 | 11篇 |
2019年 | 15篇 |
2018年 | 18篇 |
2017年 | 16篇 |
2016年 | 20篇 |
2014年 | 12篇 |
2013年 | 55篇 |
2012年 | 28篇 |
2011年 | 18篇 |
2010年 | 15篇 |
2009年 | 15篇 |
2008年 | 27篇 |
2007年 | 33篇 |
2006年 | 17篇 |
2005年 | 18篇 |
2004年 | 25篇 |
2003年 | 15篇 |
2002年 | 27篇 |
2001年 | 36篇 |
2000年 | 53篇 |
1999年 | 21篇 |
1998年 | 12篇 |
1992年 | 21篇 |
1991年 | 15篇 |
1990年 | 35篇 |
1989年 | 25篇 |
1988年 | 11篇 |
1987年 | 25篇 |
1986年 | 33篇 |
1985年 | 22篇 |
1984年 | 22篇 |
1983年 | 17篇 |
1982年 | 9篇 |
1981年 | 10篇 |
1980年 | 10篇 |
1979年 | 16篇 |
1978年 | 11篇 |
1977年 | 8篇 |
1976年 | 8篇 |
1975年 | 16篇 |
1974年 | 19篇 |
1973年 | 22篇 |
1972年 | 15篇 |
1971年 | 17篇 |
1970年 | 15篇 |
1969年 | 9篇 |
1968年 | 11篇 |
1967年 | 11篇 |
1966年 | 9篇 |
排序方式: 共有1035条查询结果,搜索用时 31 毫秒
21.
目的、意向和意识 总被引:1,自引:0,他引:1
本文提出了一个意向性目标搜寻的计算机模型,它有两个部分,静态部分包括一个目标表征和到达这个目标的程序。动态部分是一个感觉输入、中间信息加工,行为输出的重复的反馈循环。人类意向必然伴有意识,但机器人则可能无意识而有意向。 利用目标搜寻系统机器人模型,我们对目标搜寻系统的目的连续统下了定义;这个连续统从简单的直接反应系统一直到意向性系统。对这个目的连续统有两种传统的解释:一是柏拉图、亚里士多德和普罗提诺的终极原因理论,二是希腊原子论者和现代进化生物学家的还原主义学说。本文评价了这些学说。 本文考察了几种类型的意识机能,提出了以自动机为依据的意识理论,比较了人类和计算机。从计算机结构的角度来看,人类意识是一类特殊的计算机控制系统。 相似文献
22.
23.
24.
25.
U Wollina 《Psychiatrie, Neurologie, und medizinische Psychologie》1984,36(5):303-306
CNS manifestation is considered as a diagnostic as well as prognostic important variation of SLE course. Disturbances of blood flow and immunopathologic process participate in its induction. Antineuronal antibodies and circulating immune complexes in liquor show tight relations to CNS involvement. 相似文献
26.
27.
28.
An automated system for measuring intracranial self-stimulation behavior is described. The system consists of two Commodore 6502 microcomputers interfaced with a constant-current generator and a standard operant chamber. The system hardware allows sine- and square-wave stimulation. Stimulus intensity can be varied in 256 steps between 0 and 100, 0 and 500, or 0 and 1,000 /µA. The system programs, which are written in machine language, allow the control of various schedules of reinforcement, the counting of operant responses and reinforcements, the measurement of interresponse intervals, and the storage of the data on disk. The software is designed for the determination of the threshold of reinforcement, on the basis of the titration of postreinforcement pauses caused by changeover in schedule control between concurrent continuous reinforcement and fixed ratio schedules. 相似文献
29.
U H Peters 《Psychiatrie, Neurologie, und medizinische Psychologie》1990,42(1):25-33
It is the opinion of the present writer that endogenous and symptomatic schizophrenia are two completely different matters. By classical symptomatology it is impossible to establish the distinction in every individual case. Nevertheless, in not one of the published cases known to us did Bonhoeffer err in his diagnosis of the one or the other. Evidently he made use of additional characteristica gathered in practice, about which he himself may not always have been quite clear. 相似文献
30.
A kinematic analysis of anticipatory coarticulation in the speech of anterior aphasic subjects using electromagnetic articulography 总被引:1,自引:1,他引:0
An investigation was made into the extent and time course of anticipatory coarticulation in the speech of two normal and two anterior aphasic, German-speaking subjects. Both labial and velar coarticulation gestures were investigated. Subjects produced sentences containing target words contrasting in postconsonantal vowel rounding (e.g., [geli:ge]/[gely:gel]) and in nasality (e.g., [ti:de]/[ti:ne]). Speech kinematics were monitored by means of electromagnetic articulography. The data revealed that for correct productions, aphasic speakers' coarticulatory patterns were more highly variable than those of control subjects. These differences, however, were found chiefly for spatial displacement characteristics, while the temporal aspects of articulator movement necessary for anticipatory coarticulation appeared largely intact. Articulator mistiming did not appear to explain a small corpus of stop/nasal substitution errors produced by one of the aphasic speakers. 相似文献