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学科政策是科学政策的重要组成部分，对国家科学的发展影响深远。本文从学科的功能和学科政策的基本内涵出发，考察学科政策的社会经济因素及其影响，比较分析发达国家学科政策的主要类型和特点，指出国家科学资助机构在促进学科发展中的独特优势，进而提示对我国学科建设和学科发展的启示意义。 相似文献
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该文试图对我国幼儿艺术教育的现状和学前儿童艺术教育内容的相关理论进行分析,总结目前我国农村幼儿园艺术教育存在的问题,更准确地认识我国幼儿园艺术教育的实情,为我国幼儿园艺术教育研究提供更新的研究视野。构建科学合理、适合我国国情的学前儿童艺术教育课程体系,为建设更加完善、更有生命力的农村幼儿园艺术教育理论体系提供借鉴。 相似文献
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采用Norton模型对产品更新换代扩散趋势的研究——以中国互联网用户上网方式的更新换代为例 总被引：2，自引：0，他引：2
本文在Bass模型的基础上,详细介绍了产品更新换代扩散的Norton模型,并例举了通信产业的产品更新换代扩散的实例,中国互联网上网方式的更新换代的发展。模型参数的估算是影响模型准确性的一个重要方面,论文总结了前人的成果,采用遗传算法作为Norton模型的参数估计方法,并对中国互联网的上网方式,如拨号上网、ISDN(综合业务数字网)上网、宽带上网的扩散进行实证研究,模型得出另人满意的结果,并将结果与Bass模型进行了比较和讨论,得出结论,采用Norton模型研究产品更新换代扩散是一种更好的选择。最后,论文对中国移动通信网络发展提出展望。 相似文献
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The inability to touch products is a fundamental shortcoming in online shopping because humans typically use the sense of touch to evaluate the utilitarian product functionality and to obtain hedonic sensory enjoyment, which the instrumental and autotelic need for touch capture. This study of 900 consumers looks at the interplay between need for touch and imagination to study how imagination compensates for the lack of touch when consumers shop in a 360-virtual store. The study finds that while telepresence of a 360-virtual store improves consumer attitudes toward virtual shopping, the need for hedonic sensory enjoyment – autotelic need for touch – significantly reduces this effect. Further, imagination can compensate for the need for touch; yet this finding holds only for the instrumental need for touch, not for the autotelic need for touch. Consequently, we conclude that imagination can compensate for the utilitarian need to touch products in a 360-virtual store. 相似文献
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滁州市南谯区农村居民点土地置换潜力测算 总被引：10，自引：3，他引：7
农村居民点土地置换是解决区域发展中建设用地指标约束,提高农村居民点土地利用效率的有效途径。本文以滁州市南谯区为例,通过构建集主成分分析、聚类分析等手段的综合研究方法,在影响农村居民点土地置换的指标主成分提取、区域内部分级基础上,提出不同等级、不同时段的人均居民点占地标准并应用于农村居民点土地置换潜力测算研究,将测算结果与根据村庄布点规划确定的农村居民点用地规模进行了对比研究。研究结论主要有:南谯区农村居民点土地置换人均占地标准设置第一等级乡镇2010年、2020年分别为150m2/人、130m2/人,第二等级乡镇2010年、2020年分别为175m2/人、150m2/人,第三等级乡镇2010年、2020年分别为200m2/人、180m2/人;南谯区2010年农村居民点土地置换潜力为4576.34hm2,可置换比例达57.64%,2020年置换潜力为5488.17hm2,可置换比例达69.12%;测算潜力值高于根据村庄布点规划标准确定的农村居民点置换潜力,认为在同样的人口统计口径标准下,本文测算的置换潜力值的可实现程度更高。 相似文献
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This study describes theory and methods for developing detonation-driven shock tunnels in hypervelocity test facilities. The primary concept and equations for high-enthalpy shock tunnels are presented first to demonstrate the unique advantage of shock tubes for aerodynamic ground-based testing. Then, the difficulties in simulating flight conditions in hypervelocity shock tunnels are identified, and discussed in detail to address critical issues underlying these difficulties. Theory and methods for developing detonation drivers are proposed, and relevant progress that has advanced the state of the art in large-scale hypersonic test facilities is presented with experimental verifications. Finally, tailored conditions for detonation-driven shock tunnels are described, laying a solid foundation to achieve long test duration. This interface-matching key issue encountered in developing shock tunnels has been investigated for decades, but not solved for detonation drivers in engineering applications. 相似文献
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《Information processing & management》2005,41(1):57-74
In this paper, we present a formulation and case studies of the conditions for patenting content-based retrieval processes in digital libraries, especially in image libraries. Inventors and practitioners demand a formulation of the conditions for patenting data-processing processes as computer-related inventions in the form of computer programs. A process for content-based retrieval often consists of a combination of prior disclosed means and also comprises means for parameter setting that is adjusted to retrieve specific kinds of images in certain narrow domains. We focus on requirements for technical advancement (nonobviousness) in the combination of data-processing means, i.e., processes and specification (enablement) on the means for parameter setting in computer programs. Our formulation follows the standards of patent examination and litigation on computer-related inventions in the US. We confirm the feasibility and accountability of our formulation by applying it to several inventions patented in the US. 相似文献
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Kucinskiene ZA Bartlingas J 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2011,21(1):43-48
In Lithuania there are two types of specialists working in medical laboratories and having a university degree: laboratory medicine physicians and medical biologists. Both types of specialists are officially being recognized and regulated by the Ministry of Health of Lithuania. Laboratory medicine physicians become specialists in laboratory medicine after an accredited 4-year multidisciplinary residency study program in Laboratory Medicine. The residency program curriculum for laboratory medicine physicians is presented. On December 9, 2009 the Equivalence of Standards for medical specialists was accepted and Lithuanian medical specialists in Clinical Chemistry and Laboratory Medicine can now apply for EC4 registration. Medical biologists become specialists in laboratory medicine after an accredited 2-year master degree multidisciplinary study program in Medical Biology, consisting of 80 credits. Various postgraduate advanced training courses for the continuous education of specialists in laboratory medicine were first introduced in 1966. Today it covers 1-2-week courses in different subspecialties of laboratory medicine. They are obligatory for laboratory medicine physicians for the renewal of their license. It is not compulsory for medical biologists to participate in these courses. The Centre of Laboratory Diagnostics represents a place for the synthesis and application of the basic sciences, the performance of research in various fields of laboratory medicine, as well as performance of thousands of procedures daily and provision of specific teaching programs. 相似文献
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研究基于民生科技对城市社区建设在社区安全、节能环保、健康卫生、生活便利和学习交流等方面发挥的功能和作用,提出民生科技在城市社区建设中体现贡献绩效的主要因素,建立城市社区民生科技贡献绩效评价指标体系,并采用D-S理论的分析方法,通过算例对天津市华苑社区民生科技的贡献绩效进行评价,为民生科技在城市社区的绩效评估提供支撑。 相似文献
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山东蓬莱旅游业发展的资源基础与战略构想 总被引：3，自引：0，他引：3
蓬莱市位于山东半岛北端,是中国古代四大港口和近代四大对外通商口岸之一,其历史悠久,知名度高,独特性强,文化积淀丰厚,高品位资源分布集中,具有丰富的人文旅游资源.本文全面分析了蓬莱旅游资源特征;并基于该市旅游产业发展现状及其在发展中存在的经济基础相对薄弱,产业结构偏低,市政建设欠缺等问题,提出了切实可行的客源分级策略、旅游资源深度开发策略、旅游文化开发策略;同时提出了相应的发展措施,建议把发展旅游业纳入政府工作议程,将旅游业作为蓬莱市经济发展的战略性产业,并在加强旅游环保和环保旅游的同时,实行联合促销,强化旅游宣传,促进旅游业的全面和健康的发展. 相似文献
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通过对我国权威政策法规数据库进行检索,对检索结果从发布时间、发布效力级别等处着手,对我国国家信息资源政策法规建设现状进行分析,思考我国现行信息资源政策法规存在的问题,为今后信息资源政策法规制定提供参考。Abstract： Based on the retrieval of the authorized policy and law databases in China,this article analyzes the status quo of the formulation of policies and laws for information resources in China from the issuing time and the grades of issuing efficacity. The article thinks about the problems in the current policies and laws for information resources in China in an attempt to provide reference for the formulation of policies and laws for information resources in future. 相似文献
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对近年来我国成立的自然科学与社会科学高等研究院进行了梳理,总结了我国大学高等研究院的特点和问题,认为高等研究院发展将从粗放走向集约,人文社科高等研究院可能会继续繁荣,跨地区、跨学科、跨单位的高等研究院将会有所突破,政府对高等研究院将加强管理,高等研究院的内涵将进一步模糊。 相似文献
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本文介绍、评价了西藏农用矿产资源现状及其存在的主要问题，并提出了建立化肥、农药起步工业等合理开发构想。文中所提“农用矿产资源”是以化肥、农药工业所需主要原料为前提的。 相似文献
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《Information processing & management》2020,57(2):102162
Conversation is the natural mode for information exchange in daily life, a spoken conversational interaction for search input and output is a logical format for information seeking. However, the conceptualisation of user–system interactions or information exchange in spoken conversational search (SCS) has not been explored. The first step in conceptualising SCS is to understand the conversational moves used in an audio-only communication channel for search. This paper explores conversational actions for the task of search. We define a qualitative methodology for creating conversational datasets, propose analysis protocols, and develop the SCSdata. Furthermore, we use the SCSdata to create the first annotation schema for SCS: the SCoSAS, enabling us to investigate interactivity in SCS. We further establish that SCS needs to incorporate interactivity and pro-activity to overcome the complexity that the information seeking process in an audio-only channel poses. In summary, this exploratory study unpacks the breadth of SCS. Our results highlight the need for integrating discourse in future SCS models and contributes the advancement in the formalisation of SCS models and the design of SCS systems. 相似文献
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欠发达地区初中英语“翻转课堂”教学策略探究 总被引：1，自引：0，他引：1
本文对“翻转课堂”教学模式进行了介绍,归纳了“翻转课堂”的开展要素,对欠发达地区开展“翻转课堂”的困难进行了详细的分析,并对欠发达地区初中英语教学探索“翻转课堂”提出了有效的建议。对欠发达地区初中英语课探索“翻转课堂”教学模式具有一定的参考价值。 相似文献
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企业在生产过程中会不断产生新的知识,但用户却不能及时地了解这些新知识的存在,为了提高知识主动服务的能力,提出了构建面向企业业务的知识推送系统。首先阐述了企业业务活动与知识的关系,然后提出了一种面向企业业务的智能知识推送系统模型,并对其实现的关键技术作了进一步的阐述。该模型为构建面向企业业务的知识推送系统以及解决系统构建中的关键问题提供了理论指导。Abstract： New knowledge is continuously generated in enterprise production process,however,users can not know the existence of new knowledge in time.In order to improve the active service capacity of knowledge,this paper proposes to build a knowledge push system for enterprise business.The paper firstly expounds the relationships between enterprise business activities and knowledge,then proposes a model of the intelligent knowledge push system for enterprise business.The key technologies for the construction of the system are also elaborated.The model provides theoretical guidance for building the knowledge push system for enterprise business and for solving the key technologies in the construction of the system. 相似文献
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基于标准样地的国家级农用地等别质量监测点设置方法探讨 总被引：2，自引：0，他引：2
标准样地作为典型农用地等别质量的标志地,产生于农用地分等,省级以上标准样地分布的广泛性和代表性可以满足作为国家级农用地等别质量监测点的需求,研究建立基于标准样地的农用地等别质量监测点设置方法对创新农用地等别质量监测体系研究具有重要意义.基于此,本文选择业已完成农用地分等国家级汇总的冀豫鄂3省为案例区,探讨从这3省省级以上标准样地中选择合适样地作为国家级农用地等别质量监测点的方法.文章采用格网法与景观多样性指数法布设3省农用地等别质量监测样带,采用分层抽样法选取标准样地作为监测点,最终从确定的一纵三横四条监测样带中抽取出48个具有代表性的标准样地作为农用地等别质量的国家级监测点.研究认为作为国家级农用地等别质量监测点,首先需要监测点在等别质量上体现区域农用地等别质量骨架;其次监测点数目合理,以此才能在保证监测精度的前提下,有效减少数据冗余,同时节省监测数据采集的时间和经济成本. 相似文献