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   906篇
  免费   44篇
  国内免费   11篇
管理学   90篇
民族学   1篇
人口学   3篇
丛书文集   50篇
理论方法论   29篇
综合类   716篇
社会学   42篇
统计学   30篇
  2023年   7篇
  2022年   10篇
  2021年   6篇
  2020年   9篇
  2019年   10篇
  2018年   14篇
  2017年   20篇
  2016年   36篇
  2015年   19篇
  2014年   44篇
  2013年   55篇
  2012年   48篇
  2011年   78篇
  2010年   54篇
  2009年   46篇
  2008年   60篇
  2007年   56篇
  2006年   58篇
  2005年   45篇
  2004年   31篇
  2003年   30篇
  2002年   37篇
  2001年   31篇
  2000年   24篇
  1999年   14篇
  1998年   6篇
  1997年   15篇
  1996年   28篇
  1995年   29篇
  1994年   7篇
  1993年   4篇
  1992年   11篇
  1991年   4篇
  1990年   6篇
  1989年   2篇
  1988年   5篇
  1987年   1篇
  1986年   1篇
排序方式: 共有961条查询结果,搜索用时 625 毫秒
51.
大多数语言中均普遍存在相当数量的词汇化句干,此类语言信息块的使用能够缩短使用者话语输出的编码时间,提高理解语言输入的解码效率。故此,二语学习者需要增强对目标语语块信息的注意力,将之内化进而提高二语语用能力。词汇化句干对中介语发展的实证研究表明,词汇化句干的使用将促进中介语的发展。  相似文献   
52.
本文分析了电子信息工程专业信息处理专业课程群建设的必要性和可行性,并讨论了信息处理专业课程群研究与建设的内容和方法。  相似文献   
53.
本文针对中文管理系统中记录纵向输出的特点,提出了记录纵向输出中的通用汉字处理方法,给出了实现算法。  相似文献   
54.
视觉传感技术在焊接机器人上的应用,大大提高了机器人的焊接效率和焊接质量。文中介绍了基于视觉传感的 焊缝跟踪系统的分类及主动视觉和被动视觉技术的基本原理;分析了图像处理技术的滤波去噪、图像分割与边缘检测和 特征分析等研究方法;分析了焊缝跟踪系统的控制结构和智能控制技术的应用现状。最后提出根据视觉传感系统测得 焊缝的信息,实时调节焊接参数以及焊枪角度等工艺参数进行自动化和智能化焊接是未来发展方向。  相似文献   
55.
The possession and use of a personal social security number helps to structure people's daily lives. However, despite its fundamental normative importance, the social security number remains a little‐known entity. Increasingly universal and yet diverse in form, it is a legal and technical norm which is as much a mechanism for surveillance and monitoring as it is a necessary instrument for giving effect to social rights. Analysis of this constituent element of social security systems permits as assessment of some of the technical difficulties presented by the ever‐increasing movement of people and data. Overcoming these technical difficulties should permit to envisage a first technical step towards realizing a universal and global social security system.  相似文献   
56.
Abstract

Cloud computing is changing the way industries and enterprises run their businesses. Cloud manufacturing is emerging as an approach to transform the traditional manufacturing business model, while helping the manufacturer to align production efficiency with its business strategy, and creating intelligent factory networks that enable collaboration across the whole enterprise. Many production planning and control (PPC) problems are essentially optimisation problems, where the objective is to develop a plan that meets the demand at minimum cost or maximum profit. Because the underlying optimisation problem will vary in the different business and operation phases, it is important to think about optimisation in a dynamic mechanism and in a number of interlinked sub-problems at the same time. Cloud manufacturing has the potential to offer decision support as a service and medium of communication in PPC. To solve these problems and produce collaboration across the supply chain, this paper provides an overview of the state of the art in cloud manufacturing and presents a model of cloud-based production planning and production system for sheet metal processing.  相似文献   
57.
无法识别创业风险是导致创业失败的主要原因之一,如何有效识别并管理创业风险是新创企业健康成长的关键.社会网络能够弥补创业者在识别风险过程中的信息劣势,但既有研究极少探索社会网络是否以及如何影响创业风险识别.为弥补这个研究空白,文章利用信息处理理论为研究框架,构建了创业风险识别模型.具体而言,结构洞和网络强度有利于创业者获取更多、高质量与风险相关的信息,进而识别更多的创业风险;获取信息的数量在网络强度与创业风险识别关系之间发挥完全中介作用;创业者的先前经验正向影响创业风险识别,并对结构洞与获取信息的数量之间关系起调节作用.文章讨论了研究结果的理论贡献与实践启发.  相似文献   
58.
为培养高职数控技术专业学生的数控加工与编程能力,通过调研典型制造型企业,以其岗位能力需求为基础,以企业的实践过程为任务流程,规划了数控加工与编程课程的教学体系,并构建了基于网络化教学平台的数字化教学资源库。  相似文献   
59.
Previous studies examined how mood affects children's accuracy in matching emotional expressions and labels (label‐based tasks). This study was the first to assess how induced mood (positive, neutral, or negative) influenced five‐ to eight‐year‐olds' accuracy and reaction time using both context‐based tasks, which required inferring a character's emotion from a vignette, and label‐based tasks. Both tasks required choosing one of four facial expressions to respond. Children responded more accurately to label‐based questions relative to context‐based questions at the age of five to seven, but showed no differences at the age of eight, and when the emotional expression being identified was happiness, sadness, or surprise, but not disgust. For the context‐based questions, children were more accurate at inferring sad and disgusted emotions compared with happy and surprised emotions. Induced positive mood facilitated five‐year‐olds' processing (decreased reaction time) in both tasks compared with induced negative and neutral moods. Results demonstrate how task type and children's mood influence children's emotion processing at different ages.  相似文献   
60.
Understanding what social goals are associated with bullying and victimization behaviours, even after allowing for biases in interpretation of and affective responses to social events, is critical for understanding the socio‐behavioural profile of bullies and victims. In the present study, 181 nine‐ to ten‐year‐olds' affective responses, attribution of intent, and social goals were assessed in the context of a series of ambiguous and overtly hostile provocation vignettes. Results showed that even after allowing for other social information processing biases, social goals were meaningfully associated with bullying and victimization scores. Bullying was inversely associated with relationship‐building goals, and positively associated with goals to be assertive over the provocateur when provocation was overtly hostile. Being victimized was associated with having submissive goals even when provocation was ambiguous and after accounting for attribution of hostile intent. Findings are discussed in light of theoretical and practical implications.  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