网络对高等体育院校大学生思想政治工作的影响     

孙凌云 《南京体育学院学报(社会科学版)》2003,17(5):152-154

针对网络在当代大学生中的普遍运用而引起的系列问题,结合本职工作,深刻剖析了高等体育院校大学生思想和行为特点,重点阐述了网络对体育院校大学生的负面影响,并由此引申出如何更好的利用网络来加强高等体育院校大学生思想政治工作的问题。  相似文献   

网络化传感器故障自诊断的模糊逻辑方法     

尹伟  叶银忠 《上海海事大学学报》2001,22(3):255-259

介绍了网络传感器的概念及其实现方法.针对网络传感器的故障自诊断功能,提出了一种以模糊逻辑为基础的故障诊断方法,具有简洁有效的特点.仿真结果表明了该方法的有效性.  相似文献   

基于深度强化学习方法的无线多跳网络能量高效机会路由     

靳晓晗  岩延  张宝贤 《中国科学院大学学报》2022,39(3):410-420

由于机会路由能够利用无线信道的广播特性和有损特性,因此一直是提高无线网络路由性能的一个很有效的途径。提出一种基于深度强化学习的无线多跳网络能量高效机会路由算法,该算法使得智能体能够通过训练学习最优的路由策略,以通过机会路由的方式减少传输时间,同时平衡能耗延长网络寿命。此外,本算法还可以极大地缓解冷启动问题并获得较好的初始性能。仿真结果表明,与现有算法相比,该算法具有更好的性能。  相似文献   

The Future of the Past: Archaeology and Anthropology on the World Wide Web     

John W. Hoopes 《Archives and Museum Informatics》1997,11(2):87-105

In the final scene of Raiders of the Lost Ark, a crate containing the object of Indiana Jones' quest is wheeled into an immense warehouse for indefinite storage and questionable research access. Unfortunately, this fate is not all that far from reality. Collections of archaeological and ethnographic materials ranging from stone axes, broken potsherds, and carved monuments to baskets, ceremonial masks, and skin canoes have been held by museums collections since the Renaissance. However, their inestimable value and unique conservation and curatorial requirements often conspire to remove them from the reach of all but the most diligent scholars. The potential of the Web to enhance the quality of research on archaeological and ethnographic collections is enormous. This paper will examine ways that one can use the Web to enhance research and improve access to a variety of materials; while there are many other resources for archaeology available on the Web, this paper focusses on museum-related sites. It will also explore the potential of the Web for innovative research strategies. Digitization of catalogs, associated documents, and images to help one locate and study collections and specific artifacts are just one approach. Others include the connection of devices to the Web, such as cameras and microscopes, the creation of virtual reference collections, and the establishment of research networks that will enhance the identification and analysis of material culture. This paper will also consider the role the Web could play in issues of cultural property, contributing to and in many ways intensifying ongoing debates of ownership, curation, conservation, and repatriation of sensitive materials.  相似文献   

基于概率神经网络的文本自动分类研究   总被引：10，自引：2，他引：10  

施洁斌 《情报学报》2004,23(2):147-151

本文提出了将一种径向基网络的重要变形———概率神经网络应用于文本自动分类的研究 ,与常用的K 最邻近法相比 ,具有一定的优势 ,特别是在训练集中各类的训练样本数很不平衡时 ;与BP等其他神经网络相比 ,其特点是需调节的参数少 ,不需确定隐层数、隐层中的神经元数量等网络结构 ,比较容易使用。此外 ,从研究中的不同特征选择的评价函数来看 ,它们对分类有一定的影响 ,应用X2 统计进行特征选择的分类正确率最高 ,其次是文本证据权 ,而期望交叉熵的效果最差 ,说明特征选择在文本自动分类中也是非常重要的。  相似文献   

网络环境下数字图书馆的安全与防范措施   总被引：14，自引：0，他引：14  

邓少雯 《图书馆论坛》2004,24(4):106-108

阐述了网络环境下影响数字图书馆安全的因素，提出了保护数字图书馆信息安全的防范措施。  相似文献   

Update: The Invisible Farmer: securing Australian farm women’s history     

Nikki Henningham  Helen Morgan 《档案与原稿》2018,46(1):90-99

This article reviews the Invisible Farmer project – the largest study of Australian women on the land – a third of the way through its three year funding period. It introduces the aims of this collaborative and multidisciplinary project, focusing on the role of records and oral histories in the creation of new narratives, and the task of raising public awareness of the important historical and contemporary contributions made by Australian women farmers. We examine the way digital platforms work to curate records and promote research, and outline the important role that the Australian Women’s Register, a core project of the Australian Women’s Archives Project, will play in achieving outcomes.  相似文献   

Network member support marshaling in response to another’s relational transgression experience     

Meara H. Faw  Joshua R. Pederson 《Qualitative Research Reports in Communication》2018,19(1):86-93

Relational transgressions are emotionally difficult for those who directly experience the transgression. Less is known about how transgressions affect those located within the personal network of a relational transgression victim. This study explored how network members engaged in support marshaling in response to another’s transgression experience. Results indicate that some participants marshaled support, citing four reasons for their actions: perceived insufficiency, camaraderie, personal ramifications, and personal values. We explore these reasons for marshaling support and discuss them within the broader context of support marshaling and relational transgressions.  相似文献   

The density of social networks moderates effects of intergroup contact     

《Int J Intercult Relat》2016

This study tests how the density of the social network in which intergroup contact takes place might affect the extent to which contact improves intergroup attitudes. Having contact with more outgroup members in dense social networks, in which everybody knows each other, may reinforce contact's positive effect. In this case, outgroup contact is shared with ingroup members, which suggests positive ingroup norms toward the outgroup. Alternatively, more contact in denser networks may improve intergroup attitudes less because density may increase subtyping or reduce the salience of ethnic group memberships. These competing hypotheses are tested among white American adults in a nonprobability online sample (N = 305) and in a representative national sample (N = 1270). In both studies, contact is associated with more positive attitudes toward racial outgroups but the positive contact effect is weakened if that contact takes place in a denser social network.  相似文献   

光谱吸收式光纤气体传感器分辨率研究     

李双喜 《安徽科技学院学报》2006,20(2):28-30

气体传感器在环境检测、火灾与安全报警系统以及食品化工中具有广泛应用。分析了吸收式气体传感器的工作数学模型与光电检测电路的结构特点,探讨了提高吸收式光纤气体传感器分辨率的方法。  相似文献