首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   142篇
  免费   17篇
  2023年   4篇
  2022年   1篇
  2021年   7篇
  2020年   4篇
  2019年   5篇
  2018年   7篇
  2017年   8篇
  2016年   11篇
  2015年   6篇
  2014年   8篇
  2013年   20篇
  2012年   5篇
  2011年   12篇
  2010年   7篇
  2009年   5篇
  2008年   6篇
  2007年   8篇
  2006年   2篇
  2005年   5篇
  2004年   5篇
  2003年   6篇
  2002年   3篇
  2001年   1篇
  2000年   1篇
  1999年   1篇
  1998年   2篇
  1997年   1篇
  1995年   1篇
  1994年   2篇
  1992年   1篇
  1990年   1篇
  1989年   1篇
  1982年   1篇
  1980年   1篇
排序方式: 共有159条查询结果,搜索用时 31 毫秒
51.
A comparative case study is conducted on three digital city (public networks) projects. The focus of the study is on the processes involved in the development of such networks and the consequences of such networks. This study looks at (1) two broadband network projects in Central New York and (2) one digital city project in Korea. For the U.S. cases, this study discusses problems in the development of public network projects in Central New York. The two broadband projects were funded under a state program to diffuse broadband technologies in economically depressed areas of the state. The digital city project was sanctioned by the Seoul metropolitan government and is now being developed. This study investigates the initiation of the information infrastructure projects, their policy formulation processes, and the development of such projects. A new praxis of new information infrastructure is recommended. He earned his Ph.D. and Master in Information Science and Telecommunications from Syracuse University. He researches and consults on telecommunications management and policy. He also researches telecommunications and information infrastructure regulation. His interests expand to include evaluating the processes and impact of large technological projects and policy by using qualitative and quantitative case study methods.  相似文献   
52.
How does learning the timing of actions influence our ability to learn the order of actions? A sequence of responses cued by spatial stimuli was learned in a serial reaction time task where the response-to-stimulus intervals (RSIs) were random, constant, or followed a fixed sequence. In this final sequenced-RSI condition, the response and RSI sequences were consistently matched in phase and could be integrated into a common sequence representation. The main result was that the response sequence was learned to a similar degree in all RSI training conditions, indicating that neither the predictability of RSIs nor the integration of the phase-matched response and timing sequences benefited learning of the response sequence. Nevertheless, temporal learning and integration speeded up performance without strengthening the representation of response order.  相似文献   
53.
An antiseptic religion is a form of Protestant Christianity that was shaped in the context of colonization in Korea. This term was coined to explain a religious hybrid that was produced by the intermingling of American Evangelical Protestant Christianity, the concept of hygiene (germ theory) and indigenous Korean religiosity. This research deals with a historical process of making ‘a medicalized religion’ in Asia from a perspective of postcolonialism. Most of the early American Protestant missionaries in Korea were medical doctors who were influenced by the Germ theory of illness and considered Western medicine as an efficient tool to evangelize the country. As a result of their mission, a religious culture which emphasized washing away sins from the soul as analogous to washing away germs from the body was born. In addition, the Korean people developed a very unique form of public bathing ritual centered in the development of public baths to alleviate anxiety and to destabilize the solid strategies of the Japanese and the Americans, the two major colonial powers in Korea’s history in the late 19th century.
Shin K. KimEmail:
  相似文献   
54.
Abstract: This study examined estimates of finger vascular tone, obtained from photoplethysmography. Normalized and double‐normalized pulse volume (NPV and DNPV), blood volume (BV), and pulse volume (PV) were obtained in 2 male and 7 female middle‐aged patients at an outpatient office 1–3 days before an operation and in the operating room before and after anesthesia by propofol. There was a preoperative decrease in NPV, and the propofol injection yielded a moderate increase in BV. The latter seemed to contribute to a decrease in DNPV. A partial correlation controlling for body mass index was observed between the change in NPV and the dose of propofol; a larger reduction in NPV before anesthesia compared with the control condition was accompanied by the need for a greater infusion of propofol for sedation. In conclusion, among the measures examined, NPV appears to be the best indicator of heightened arteriolar vascular tone.  相似文献   
55.
This study explored the discriminant validity of optimism and hope in accounting for unique variance in depression and life satisfaction for 334 secondary school students from Singapore. Correlational analysis showed that optimism and hope were significantly correlated with each other. Hierarchical multiple regression findings indicated that both optimism and hope significantly predicted depression and life satisfaction even after controlling for hope and optimism, respectively. However, the incremental unique variance accounted for in depression by optimism is 6% more than that accounted for by hope in terms of R2 Change values. Simultaneous multiple regression analyses using the subscale scores found that only agency, optimism, and pessimism contributed uniquely to the variance in depression and life satisfaction. Implications and limitations of these findings are discussed.  相似文献   
56.
A method for the study of visual memory span is described. The results of two dot-in-matrix experiments indicated that the patterns of larger matrix size were more difficult to recall, but the effect of visual angle was not significant. Visual memory span could be represented by the number of dota in the 5 by 6 or 6 by 6 pattern that a subject perfectly recalled with a probability of .5, since the proportion of recalled patterns was a monotonie decreasing function of the number of dots. This method can be used in group experiments without consideration of the differences in visual angles caused by the locations of subjects. The selection of appropriate presentation times and the distinction between verbal and visual memory spans are discussed.  相似文献   
57.
The influence of complexes on implicit learning   总被引:1,自引:0,他引:1  
A century ago, Jung looked into the unconscious through complexes by using word association tests. Jung wrote, 'modern psychology with its investigation of complexes has opened up a psychic taboo area riddled with hopes and fears', and complexes remain an unexplored taboo area of research. In the present study, we have investigated the influence of complexes on unconscious cognitive processing, in particular on implicit learning. We have found that complexes shown to disturb conscious cognitive processing in fact enhanced the attention of the subjects and their performance on an implicit learning task. These results suggest that complexes are not just abstractions, but have various actual influences on both conscious and unconscious processing.  相似文献   
58.
Parkinson's patients have been found to be impaired in learning movement sequences. In the current study, patients with unilateral basal ganglia lesions due to stroke were tested on a serial reaction time task in which responses were based on the spatial location of each stimulus. The spatial locations either followed a fixed sequence or were selected at random, with learning operationalized as the difference in reaction time between these two conditions. In addition, three response-to-stimulus intervals were used, and these either followed a fixed sequence or were randomized. Compared to control participants, the patients showed normal learning of the spatial and temporal sequences, as well as normal cross-dimensional learning. This was true for performance with either the contralesional or ipsilesional hand. Sequence learning was not correlated with maximum tapping rate, a simple measure of motor impairment. These results raise questions concerning the use of Parkinson's disease as a model for studying basal ganglia dysfunction.  相似文献   
59.
While much research has focused on issues of justice in children's moral learning, little is known about children's use of other moral orientations in solving moral problems. A study was conducted with children drawn from Grades 1, 3, and 5 (total n=54). Fables were used as the moral dilemmas, since previous research had shown that they could be solved from either a justice or a care orientation. In individual interviews, children were asked how they would solve the problems in the fables, whether there was a different solution, and what the best solution (justice or care) would be. They were then asked to explain the logic of the solution they offered. The results from the study showed that (a) children tended to adopt a care orientation as their first solution and to consider it the best solution, (b) there were no differences between first- and third-grade boys and girls, (c) solutions involving violence and tricks appeared among the fifth-grade boys only, and (d) the ability to explain the logic of both orientations to the fables problem was correlated with children's use of abstract reasoning skills on beginning formal operational tasks and with perspective-taking ability.We would like to thank the principal and teachers of the Thetford Elementary School, Thetford, Vermont, for their participation in this project. We are also grateful to Elizabeth Hoffman, Dan Parish, Kathleen Lambert, and Heather Caldwell for their help with data collection, to Carol Kottmeier and Mary Varanese for their coding of the Selman data, and to Ann Huebner, Kay Johnston, Sharry Langdale, Michael W. Pratt, and Lawrence Walker for their comments on the paper. Support for the research was provided by Rockefeller Center at Dartmouth College.  相似文献   
60.
We examined how individuals and groups behave in making judgmental forecasts when they are given external forecast advice. We compare individual and group advice-taking behavior under different conditions: (a) when advice quality is fixed, (b) when advice quality is randomly varied, and (c) when there is feedback on advice quality or not. Participants in Study 1 received fixed advice of either reasonable or unreasonable quality while making their decisions. Participants in Study 2 randomly received both reasonable and unreasonable advice. We found in both studies that groups feel more confident than individuals. This greater confidence decreased the groups' reliance on advice. We also found that groups are better than individuals at discerning the quality of advice. In the group treatment, the group's reliance on advice increased according to the degree of disagreement with the initial decisions of the group members. In Study 3, participants randomly received both reasonable and unreasonable advice, and in addition, they received feedback on actual realizations that enabled them to learn about the quality of advice. In the presence of feedback on random advice quality, groups are no longer less receptive to advice than individuals; with feedback, both individuals and groups discount advice more than they do without feedback. Nevertheless, groups are still better than individuals at discerning the quality of advice. We conclude that group forecasting is better than individual forecasting across various conditions that we investigate except when advice quality is known to be consistently reliable.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号