共查询到20条相似文献，搜索用时 93 毫秒
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综述了我国设施内土壤盐碱化的严峻现实。分析了土壤盐碱化的成因,并归纳了我国土壤盐碱化的类型,回顾了近年来中国盐碱土壤修复的历程和研究成果,归纳了盐碱土壤修复的方法,并且评述了其各自的特性,分析了各个修复方法的优点点,肯定了成绩,指出了不足。最后,对设施盐碱土壤的修复指明了正确的方向,并提出了较高的期望。 相似文献
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如今，工作、生活条件好了，有的新闻工作者深入采访的作风却差了；接待高了，招待好了，新闻的精品却少了；交通方便了，离老百姓的距离亦远了。 相似文献
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论民国时期云南地方志 总被引：1，自引：0，他引：1
民国时期的云南地方志工作取得了很大的成果,编纂了一批方志。本文介绍了民国时期地方志编纂的基本情况,列举了一些比较有代表性的地方志,同时着重分析了云南民国时期的方志学理论,找出了创新点,指出了存在的问题。 相似文献
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中国一线市场的市场熟了,消费者理性了,渠道丰富了,终端饱和了,竞争加剧了,中国企业的老板开始紧张了,都准备把营销战场从一线城市拉到更低的地方了,这才有了激情四射的二三线市场营销竞争新格局。 相似文献
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新闻版上,领导的照片与活动少了,普通百姓成了主角;社会新闻增加了,可读性增强了,报纸版面多了,厚了,内容丰富了,有分量了[编者按] 相似文献
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甘肃民歌中的劝戒鸦片歌谣 总被引：1，自引：0，他引：1
“刀刀切了羊肉了,你把洋烟曷(不要)斗了!洋烟那么老百姓为什么要种植鸦片呢?鸦片容易种植吗?把你吃瘦了!柏木改了柏板了,你把洋烟曷管了!洋烟把从一首民歌中来看看农民种植鸦片的艰辛。山丹县的《种你吃懒了!你把洋烟曷斗了!洋烟把你吃瘦了!吃成一把洋烟》歌,以时间顺序唱出了种鸦片的过程,“正月里来骨都了!刀刀切了白菜了,洋烟把你吃坏了!吃者人人不吧是新春,清朝家遗留下种洋烟。多种花儿少种了田,上爱了!你把洋烟曷管了,洋烟把你吃懒了!门上来人不管去抽一口鸦片烟。二月里来吧龙抬头,庄稼人收拾了把田了!斧头剁了红桦了,洋烟把你难下… 相似文献
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现代教育技术的快速发展,极大地丰富了教学内容、创新了教学模式,给语文课堂教学提供了一个广阔的舞台。多媒体快速走进了语文课堂,激发了学生的学习兴趣和想象力,扩大了课堂教学的信息传递,同时也弥补了教师自身的不足,并且很好的完善了课堂教学结构。 相似文献
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Peter B. Tirrell 《Curator: The Museum Journal》2000,43(2):157-180
University museums and their collections are among the oldest and most significant in the world, yet their role and future is being questioned. They have critical needs for facilities, staff, and support. At risk are millions of objects that document our natural and cultural history and programs for research, teaching, and public education and exhibits. The museums are attempting to redefine, reposition, and clarify their educational mission. Museums such as the Sam Noble Oklahoma Museum of Natural history are successfully meeting the challenges through strategic planning and funding for new facilities. Other museums are finding solutions with partnerships, links, and tailor‐made service programs. New leadership and management will need to emerge for university museums to reestablish their stature and relevance. Physical and intellectual access to the museums and their objects is a key to their future. The new technologies are tools that museums can use to improve their interpretive programs and increase the depth of their research. Facing shared concerns and challenges, the museums are generating a growning sense of collective urgency and a call for intenational organization, advocacy, and cooperation, resulting in formation of the International Committee for University Museums and Collections. 相似文献
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中非智库合作进入新时代。为全面落实中非合作论坛北京峰会成果,加快中非命运共同体的构建,中非智库论坛第八届会议就“中非智库媒体交流合作与中非话语权建设”议题进行深入探讨。构建命运共同体对中非智库媒体提出新要求,讲好中非故事、捍卫话语权是中非智库媒体的新使命。中非应强化智库建设,构建全方位、立体化的中非智库合作网络;拓展中非智库合作领域,聚焦治国理政、职业教育、出版传播、法律服务等;加强智库媒体融合,创新叙事方式和路径,提升话语权和影响力,为共筑中非命运共同体提供智慧支持。 相似文献
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Amrita Madray 《Public Services Quarterly》2013,9(2):111-125
ABSTRACT Plagiarism in media and print continues to be a major issue for professors, librarians, and students. Through initiatives and outreach from the B. Davis Memorial Library at the C. W. Post Campus of Long Island University, plagiarism Web sites have been created and workshops and programs continually provided for faculty and students to detect, discourage, and prevent plagiarism. Faculty members are presented with techniques and tips that range from designing assignments to detecting and ultimately stemming the tide of plagiarism, and students are apprised of plagiarism and the myriad ways of avoiding it. However, collaborations between librarians and the academic community are vital in arresting and curtailing this pervasive problem. 相似文献
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制度建设：图书馆发展之根本保障 总被引：3，自引：0，他引：3
规章制度是组织加强内部管理的重要基础.图书馆规章制度具有教育引导、评价预测、激励等功能.目前在图书馆规章制度建设中,制度的构建和执行都存在一些缺陷.加强和完善规章制度建设,必须树立权利意识、合作意识、程序意识,处理好内部规章与法律、图书馆整体需要与个人需要以及普遍性与针对性等关系,做到严格、公正地执行规章制度. 相似文献
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Janet Chan 《Journal of the Medical Library Association》2021,109(3):376
Technology advances in eHealth and mHealth are changing the way that health care consumers and providers communicate, receive and deliver care, and access health information. As electronic health records and smartphones have become ubiquitous in the United States, opportunities and applications for the integration of eHealth and mHealth have increased. In addition to technology advances, the changing health care model is simultaneously adapting to and driving initiatives in digital health care. With these digital initiatives have come challenges, including data overload, security and privacy concerns, deficits in technological and health literacy skills, and sorting through the vast number of choices of digital applications. Navigating this changing landscape can be overwhelming and time consuming for both health care providers and consumers. Librarians are uniquely positioned to assist providers and consumers to break down barriers within the digital health care landscape through data management initiatives, technology and health literacy instruction, and finding and evaluating health information and digital health technologies. 相似文献
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对美国和英国的4个高校数据监管项目进行调研和比较分析,发现数据监管需要大学的数据管理政策和计划的支持,数据监管与图书馆机构库密不可分,数据监管项目需要与科研人员密切合作,需要平台的支持.因此,图书馆应积极参与数据监管,制定合理的数据监管计划,将机构库与数据监管结合起来建设,建立数据标准和规范,搭建数据监管平台,提升馆员的数据监管技能. 相似文献
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Computational modelling of music similarity is an increasingly important part of personalisation and optimisation in music information retrieval and research in music perception and cognition. The use of relative similarity ratings is a new and promising approach to modelling similarity that avoids well known problems with absolute ratings. In this article, we use relative ratings from the MagnaTagATune dataset with new and existing variants of state-of-the-art algorithms and provide the first comprehensive and rigorous evaluation of this approach. We compare metric learning based on support vector machines (SVMs) and metric-learning-to-rank (MLR), including a diagonal and a novel weighted variant, and relative distance learning with neural networks (RDNN). We further evaluate the effectiveness of different high and low level audio features and genre data, as well as dimensionality reduction methods, weighting of similarity ratings, and different sampling methods. Our results show that music similarity measures learnt on relative ratings can be significantly better than a standard Euclidian metric, depending on the choice of learning algorithm, feature sets and application scenario. MLR and SVM outperform DMLR and RDNN, while MLR with weighted ratings leads to no further performance gain. Timbral and music-structural features are most effective, and all features jointly are significantly better than any other combination of feature sets. Sharing audio clips (but not the similarity ratings) between test and training sets improves performance, in particular for the SVM-based methods, which is useful for some applications scenarios. A testing framework has been implemented in Matlab and made publicly available http://mi.soi.city.ac.uk/datasets/ir2012framework so that these results are reproducible. 相似文献
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科学数据和信息是重要的科技资源,是科技创新活动的重要基础和工具。科学数据和信息是国家科技基础
条件平台建设体系中非常重要的一类资源,加强科学数据和信息资源管理与共享研究,是推进科技平台建设的重要理
论基础。本文在对比分析国外科学数据和信息资源管理与共享现状的基础上,系统总结了我国在科学数据和信息管理
和利用方面取得的主要工作成效,提出完善制度体系和管理机制、推动数据中心建设、加强数据和信息全生命周期管
理等意见和建议 相似文献
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基于知识图谱的国际高等工程教育学科前沿的研究 总被引：2，自引：0，他引：2
摘要：运用科学计量学中的期刊共被引方法及可视化技术,对国际高等工程教育研究的17种期刊进行了科学计量分析。研究得出,当前国际高等工程教育学科前沿研究存在3个主流期刊知识群,其研究主题主要分别围绕“化学科学与工程、计算机科学与工程、机械科学与工程”、“环境科学与工程、生物科学与工程、心理学与工程学的结合”、“生物科学与技术、环境科学与技术”等方面。最后,对研究结果进行了一定的讨论与展望。 相似文献
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照会是近代对外交往中最常用的文书形式。美国国家档案馆藏近代美国驻奉天领事馆领事报告档案中含有大量美国领事与中国东北当局的往来照会,这些照会内容丰富,中英文兼备且保存完整,其以外交文书的形式承载了丰富多元的历史内涵,因此具有极高的档案价值。本文通过细致爬梳领事照会档案,从发文方向、语言、事由、涉事方等角度对其进行细致分类,进而从文书体式及历史内涵等方面进行深入研究。该研究将有助于档案学、历史学更好地体认近代照会文书的程式与内容的演变以及其蕴含的深层历史脉络。中美往来照会逐渐由传统的繁复的程式向高效练达的风格演变,也成为中美外交文书和外交观念相互交融与影响的例证。 相似文献