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排序方式: 共有873条查询结果,搜索用时 15 毫秒
91.
用SL选择性培养基从青贮饲草中分离出10株乳酸菌,并从革兰氏染色特性、形态特征、培养特性和生化反应等方面进行了初步鉴定。结果明串株菌2株、片球菌2株、植物乳杆菌3株、发酵乳杆菌3株。按不同菌株搭配制成发酵剂。经发酵剂处理的秸秆喂牛增重效果显著。 相似文献
92.
93.
负担和竞争是义务教育的正常现象,而负担过重和过度竞争才是要解决的真问题。其根本原因,一方面在于教育具有产品标准化、信息不对称等易引发过度竞争的一般特征,另一方面在于教育具有公共资源的属性。由国家承担主要的教育成本且资源分布不均,促使个体通过牺牲式教育抢占更多公共教育资源以实现个人利益最大化,却导致国家集体利益的损失。其直接原因在于,代理人缺乏对儿童健康成长的认识,把额外争取到的公共教育资源视为牺牲式教育的补偿,而且为防止孩子年龄增长导致的控制能力减弱,代理人更加倾向于在儿童学业初期就施加过重的负担以“打好基础”。“双减”政策与《家庭教育促进法》可以全空间约束过度教育竞争,但也随之产生了约束有效性和约束成本的问题,需要进一步提高学校教育的质量,防止“双减”政策产生限制竞争却抑制发展的效果。 相似文献
94.
95.
网络搜索引擎与智能代理的对比研究 总被引:17,自引:1,他引:17
分析搜索引擎与智能代理技术各自的工作原理和差异,探讨二者之结合对于未来网络信息检索具有的重要意义及其结合模式。 相似文献
96.
体育经纪人管理体制与运作机制研究 总被引:6,自引:3,他引:6
与国外体育经纪人管理体制比较,我国的体育经纪人立法管理“供给不足”。国外体育经纪人管理机构主要是国际和国家体育组织、国家和地方政府机构,以及体育经纪人行业协会。我国体育经纪人管理主要由国家体育总局各运动项目管理中心,以及地方体育和工商行政管理部门。目前的主要问题是:1)国家体育经纪人管理法规缺损;2)体育经纪资格征书的互认问题;3)体育经纪人培训考核规范问题。适合国情的立法体系是:“国家统一法规” “地方或行业配套法规”。管理体系是:“政府委托的协会监督” “行业自生的商会自律”。 相似文献
97.
Brian Edward Hubner 《Archival Science》2007,7(3):195-206
Census information of some form has been collected in Canada since the 1611 census of New France. Aboriginal people, identified
or not, have been included in these enumerations. The collection of this information has had a profound impact on Aboriginal
people and has been an element that has shaped their relationship with the dominant society. In response, Canadian Aboriginal
people have often resisted and refused to co-operate with census takers and their masters. This article is an examination
of this phenomenon focused on the censuses conducted in the post-Confederation period to the present. A census is made to
collect information on populations and individuals that can then be used to configure and shape social and political relations
between those being enumerated and the creators of the census. However, the human objects of the census are not just passive
integers and they have resisted its creation in a number of ways, including being “missing” when the census is taken, refusing
to answer the questions posed by enumerators or even driving them off Aboriginal territory. A census identifies elements of
the social order and attempts to set them in their “proper” place and those who do not wish to be part of that order may refuse
to take part. Archivists and historians must understand that the knowledge gained in a census is bound with the conditions
of own creation. This has been noted by contemporary Aboriginal researchers who often state that the archival record of their
people often distorts history and reflects the ideas and superficial observations of their Euro-Canadian creators. Changes
to the Census of Canada since 1981, have increased the participation rate and therefore changed the nature of the record.
Brian Edward Hubner is currently Acquisition and Access Archivist at the University of Manitoba Archives & Special Collections. He was previously employed at the Archives of Manitoba, in Government Records; Queen’s University Archives, Kingston; and at the National Archives of Canada, Ottawa. He has a Master of Arts (History, in Archival Studies) from the University of Manitoba, and a Master of Arts (History), from the University of Saskatchewan. The 2nd edition of Brian’s co-authored book on the history of the Cypress Hills of Saskatchewan and Alberta is being published in 2007. He has published articles and delivered conference papers on Canadian Aboriginal peoples including “Horse Stealing and the Borderline: The N.W.M.P. and the Control of Indian Movement, 1874-1900.” His current research interest focuses on relationship between Canada’s Aboriginal Peoples and Canadian archives. Brian is married and has two children. 相似文献
Brian Edward HubnerEmail: |
Brian Edward Hubner is currently Acquisition and Access Archivist at the University of Manitoba Archives & Special Collections. He was previously employed at the Archives of Manitoba, in Government Records; Queen’s University Archives, Kingston; and at the National Archives of Canada, Ottawa. He has a Master of Arts (History, in Archival Studies) from the University of Manitoba, and a Master of Arts (History), from the University of Saskatchewan. The 2nd edition of Brian’s co-authored book on the history of the Cypress Hills of Saskatchewan and Alberta is being published in 2007. He has published articles and delivered conference papers on Canadian Aboriginal peoples including “Horse Stealing and the Borderline: The N.W.M.P. and the Control of Indian Movement, 1874-1900.” His current research interest focuses on relationship between Canada’s Aboriginal Peoples and Canadian archives. Brian is married and has two children. 相似文献
98.
基于P2P的适应性信息检索系统的设计 总被引:3,自引:1,他引:3
江淇 《现代图书情报技术》2005,21(9):41-44
针对现有搜索引擎的不足,提出了一个基于P2P的适应性信息检索系统设计方案,详细介绍了系统的各主要模块的功能和技术方法,进而分析了该模型的优势。 相似文献
99.
基于Agent的网络传播危机信息识别与评价研究 总被引:1,自引:0,他引:1
阐述如何将agent引入网络传播信息的危机识别与评价工作,构建网络传播危机信息智能识别与评价体系结构框架,并对各子系统的具体运作进行分析研究,提出网络传播危机信息二评校验互补评价模型。该研究能大大增强网络传播危机预警的系统性、准确率和时效性,有效提高企业防范和治理网络传播危机的能力。 相似文献
100.
当前知识管理系统模型问题与对策分析 总被引:31,自引:0,他引:31
本文对几种典型知识管理系统模型做了介绍和分析 ,指出了当前知识管理模型中存在的问题与不足 ,并探讨了相应的对策。 相似文献