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This paper gave an account of the concept, theoretical foundation and functions of formative assessment, described the significance of applying formative assessment to college English learning, and finally pointed out the unsolved issues in practice.
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摘要对形成性评价的概念、理论基础、功能等进行评述,指出形成性评价对大学英语学习的重大意义,并提出实践过程中有待解决的问题。 |
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This paper generalizes the general equilibrium theorem to the case of indivisible markets where preferences is strictly convex, continuous and strongly monotonous.
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摘要给出了不可分市场中一般均衡存在的一个充分条件:消费者偏好函数是强凸、连续和严格单调的。 |
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This paper gets started from the angle of social harmonious development, and takes caring the weak group as starting point, analyzes on the issues in its fulfillment, the intention is to provide with theoretic and practical references for legalization cou
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本文从社会和谐发展的角度出发,以关注弱势群体为基点,对最低生活保障制度实施中所存在的问题进行了分析,试图为这一制度的法制化进程提供理论和实践参考。 |
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This paper gets the frequency stability of a sine wave using a digital method.
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摘要本文实现了利用数字方法计算正弦波的频率稳定度。 |
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This paper give a brief description of the LDY40 high-grade asphalt pavement maintenance truck, further explicitly introduce the application of Siemens S7-200 PLC on the control system of the truck.
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摘要简单介绍了LDY40高等级沥青道路养护工程车,详细阐述了西门子S7-200系列PLC应用于工程车控制系统的设计过程。 |
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This paper gives a brief account of some new methods and techniques developed by experts of Institute of Geophysical and Geochemical Exploration since 1987 with a view to seeking for concealed ore deposits and improving ore-prospecting effects in the fiel
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摘要本文简要介绍1987年以来地矿部物化探研究所在矿产勘查地球化学领域为寻找隐伏矿和提高其找矿效果而研究、开发的一些新方法、新技术。 |
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This paper gives a brief account of the concept of Modern Long-distance Education, its configuration chart of resources system, and also exemplify its application.
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摘要简要介绍了现代远程教育的概念、发展历史及重要性,给出现代远程教育的系统资源结构图,举例说明了现代远程教育的应用。 |
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This paper gives a brief account of the origin, development and typical features of the Chinese graphic characters, analyzes the cultural themes and allegorical implications inherent in them, generalizes the artistic devices by which they are used for dec
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本文简要叙述了汉字图形化的源与流及其典型特征,着重对汉字图形蕴涵的文化主题、寓意内涵进行了分析说明,就汉字图形的题材类别、典型种类和样式,以及装饰、组合、构成等艺术手法加以归纳、概括和总结,从而对汉字图形的主题内涵、装饰造型规律、形态特征等有一定的认识。 |
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This paper gives a brief introduction to nm technologies and principles of content-bard video retrieval system, further analyses several typical systems of video information retrieval system, points out the problems and the relevant solutions, and moreove
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摘要介绍了基于内容视频检索系统所涉及的主要技术和工作原理,对目前国外几个典型视频检索系统进行了分析,指出了存在的问题及相关的解决方案,并就今后如何进行基于内容视频检索系统的研究提出了一些新的看法。 |
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This paper gives a brief review of four stabilization mechanisms of SOC: (1) recalcitrance of organic carbon compounds, (2) interactions with metal oxides and soil mineral surfaces, (3) spatial inaccessibility against decomposers because of micro-aggregat
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土壤有机碳的稳定机制主要包括:(1)有机碳的难降解性;(2)金属氧化物和粘土矿物与有机碳的相互作用;(3)土壤团聚体的物理保护导致的生物与有机碳空间隔离;(4)土壤生物学机制,主要指土壤生物自身对有机碳稳定性的直接贡献。 |
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This paper gives a comprehensive description of new advances in the development of aerogeophysical techniques used abroad and describes such instruments as aeromagnetometer and UAV, gamma spectrometer, and the newest aeromagnetic, aeroelectromagnetic and
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摘要综述了2000年来西方国家航空物探技术的新进展,介绍了最新的航空磁力仪、航空伽马能谱仪、航空电磁仪、航空重力测量系统、无人机航空物探系统以及数据处理软件系统等。 |