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    题名 作者 年代 出处 被引量
1Preface显示文摘We are very proud and honored to have been entrusted to guest edit this special issue entitled'Mobile Ad Hoc and Sensor Systems',for the Journal of Computer Science and Technology,the leading Chinese journal in the area of computing.Our main goal was to put together a strong issue emphasizing quality and relevance to current interests in this important field.Our goal was to attract leading researchers in this'hot'field of researchLi, Xiao-Dong Luo, Wen-Jian Yao, Xin 2008Journal of Computer Science & Technology2008,23,1:91
2藏北羌塘中部绒玛地区蓝片岩岩石学、矿物学和^(40)Ar/^(39)Ar年代学显示文摘藏北羌塘中部沿龙木错-双湖-线出露一条低温高压变质带,目前已有多处蓝片岩的报道。然而,除冈玛错地区产有典型的蓝闪石外,多数地区并没有典型蓝闪石的报道。绒玛蓝片岩位于羌塘中部高压变质带的中段,是该带中规模最大、保存最好的蓝片岩,对蓝片岩进行了详细的岩石学和矿物学研究,钠质角闪石主要为蓝闪石、青铝闪石、钠闪石和镁钠闪石。对蓝片岩中蓝闪石和多硅白云母进行了^(40)Ar/^(39)Ar定年,获得了227.3±3.8Ma和215±1.5Ma的坪年龄,分别代表蓝片岩快速俯冲消减和俯冲作用结束开始折返抬升的时代。绒玛蓝片岩岩石学、矿物学和^(40)Ar/^(39)Ar年代学研究为羌塘中部高压变质带的研究提供了新的资料。翟庆国 李才 王军 陈文 张彦 2009岩石学报2009,25,9:38
3他们不再是孩子了 关于“新失业群体”现状的社会学报告显示文摘The “New Unemployed” consists of young people with low education in the Chinese cities. They differ from the cohorts of their parents because they have no work experiences in any state- or collective-owned enterprise, and are subject to completely different policies designated by the government. Investigations of their daily living lead to the conclusion that the “New Unemployed” has gone through a “system withdrawal” process. They are now facing an environment of “system vacuum” that none of other unemployed groups has ever encountered before. The author emphasizes in the paper a strategic employment principle of “For Future Generations” so that focused attention and care can be provided and this toughest challenge in China can be dealt with.吕鹏 2005社会2005,25,4:26
4The optimal path of piston motion for Otto cycle with linear phenomenological heat transfer law显示文摘An Otto cycle engine with internal and external irreversibilities of friction and heat leakage, in which the heat transfer between the working fluid and the environment obeys linear phenomenological heat transfer law [q ∝△(T -1)], is studied in this paper. The optimal piston motion trajectory for maximizing the work output per cycle is derived for the fixed total cycle time and fuel consumed per cycle. Optimal control theory is applied to determine the optimal piston trajectories for the cases of with and without piston acceleration constraint on each stroke and the optimal distribution of the total cycle time among the strokes. The optimal piston motion with acceleration constraint for each stroke consists of three segments, including initial maximum acceleration and final maximum deceleration boundary segments, respectively. Numerical examples for optimal configuration are provided, and the obtained results are compared with those obtained with Newton’s heat transfer law [q ∝△(T )]. The results also show that optimizing the piston motion can improve power and efficiency of the engine by more than 9%. This is primarily due to the decrease in heat leakage loss on the initial portion of the power stroke.XIA ShaoJun CHEN LinGen SUN FengRui 2009Science China(Physics,Mechanics & Astronomy)2009,52,5:18
5Optimal paths for a light-driven engine with a linear phenomenological heat transfer law显示文摘An irreversible light-driven engine is described in this paper, in which the heat transfer between the working fluid and the environment obeys a linear phenomenological heat transfer law [ q ∝Δ(T -1)], with a working fluid composed of the bimolecular reacting system 2SO 3 F■S 2 O 6 F2. Piston trajectories maximizing work output and minimizing entropy generation are determined for such an engine with rate-dependent loss mechanisms of friction and heat leakage. The optimal control theory is applied to determine the optimal configurations of the piston motion trajectory and the fluid temperature. Numerical examples for the optimal configuration are provided, and the obtained results are compared with those derived with Newtonian heat transfer law [ q ∝Δ(T )].MA Kang, CHEN LinGen & SUN FengRui Postgraduate School, Naval University of Engineering, Wuhan 430033, China 2010Science China Chemistry2010,53,4:14
6江西湖田窑址H区发掘简报显示文摘A rescuing archaeological excavation in Area H of the Hutian kiln-site was carried out in July-October 1999 by the Jiangxi Provincial Institute of Cultural Relics and Archaeology. The work covered an area of more than 1,300 sq m, revealed 11 spots of house-foundation, well, small yard,clay-refining pool and ash-pit remains, and discovered above 600 intact and restorable articles of greenish-white-glazed, egg-white-glazed, black-glazed and blue-and-white porcelain wares from the Song, Yuan and Ming periods. The excavation clarified relatively direct stratigraphic evidence on the typological evolution of the vessels typical of the Song and Yuan periods and threw light on a batch of egg-white-glazed “shu fu” porcelain objects of the early Yuan and some inscribed porcelain-making implements.徐长青 李放 肖发标 杨军 2000考古2000,,12:12
7DELMIA在机器人白车身点焊工作站规划设计中的应用显示文摘针对目前国内在机器人点焊工作站规划设计中普遍存在经验不足问题,提出了应用DELMIA仿真软件模拟现场情况,在一定程度上弥补机器人点焊工作站规划设计人员经验不足问题,并提高规划设计效率与质量。DELMIA仿真软件应用于机器人点焊工作站规划设计的整个过程,包括机器人数量及其空间位置确定,机器人选型,点焊焊枪概念设计,机器人工作过程仿真验证,离线编程等。林巨广 汤东华 Ju-guang Dong-hua 2010机械设计与制造2010,,12:11
8关于计算机信息系统集成项目管理显示文摘计算机信息系统集成是一门多学科综合且富有一定创造性的学科。它是当今工程学领域的一个新的分支,但它本身又存在一些不同于传统的工程领域的一些方面,如何较好的掌握信息系统集成技术并将其应用于实践中以保障工程的顺利进行就变的比较困难,本文着重阐述如何在计算机信息系统集成项目中进行工程的控制和管理。李红育 李绍伟 2010办公自动化(综合月刊)2010,,6:11
9社会工作:和谐社会建设中德才融合的利他专业显示文摘顾东辉 2008西北师大学报(社会科学版)2008,45,1:11
10Investigation on Work-Related Musculoskeletal Disorders--China, 2018−2019显示文摘What is already known about this topic?Work-related musculoskeletal disorders(WMSDs)have a high prevalence and seriously harmful,which has attracted extensive attention in various countries in the world.Currently,the occurrence and rules of WMSDs in key industries are not known in China.What is added by this report?The prevalence of WMSDs is relatively high among professional populations in key industries in China,with the most commonly affected body parts concentrated in neck,shoulders,and low back and increasing with age and working years.What are the implications for public health practice?This study determined the prevalence and distribution characteristics of WMSDs in key industries in China and provided scientific evidence to recommend for inclusion of WMSDs in the new revision of the list of occupational diseases in China.Ning Jia Huadong Zhang Ruijie Ling Yimin Liu Gang Li Zaoliang Ren Yan Yin Hua Shao Hengdong Zhang Bing Qiu Meibian Zhang Dayu Wang Qiang Zeng Rugang Wang Jianchao Chen Danying Zhang Liangying Mei Yongquan Liu Jixiang Liu Chengyun Zhang Tianlai Li Qing Xu Ying Qu Xueyan Zhang Xin Sun Zhongxu Wang 2020China CDC weekly2020,2,18:11
11网络媒体与思想政治工作的新发展显示文摘以互联网为代表的新媒体近年来发展迅猛,给思想政治工作带来了新挑战,我们的思想政治工作者面临更加开放、复杂、多样、多变的大环境。网络条件下思想政治工作者要有新思路、新发展;要与时俱进,保持先进性,变落伍为引领;要转变观念,体现平等性,变网民为朋友;要深入实践,突出实效性,变生手为行家。谭满媛 2010湘南学院学报2010,31,4:10
12联合督导在社会工作实习中的应用显示文摘社会工作的实务属性对专业人才培养方式提出了较高的要求,作为专业教育中的一个重要环节,社会工作实习的开展也日益受到重视。在美国,社会工作教育委员会(Council on Social Work Education)规定,一个学生要获得社会工作学士学位,必须有800-900小时的专业实习。张敏杰 2011浙江工商大学学报2011,,4:10
13Derivation of the work expression and discussion on the effective principle and the phase separation theorem in unsaturated soil显示文摘Based on the balance equations for mass, linear momentum, energy in porous media theory and some hypotheses in unsaturated soil mechanics, an expression of the total deformation work W is derived, and with the help of the specific ex-pression of the work, the effective stress conjugated with the displacement of the soil skeleton is suggested by the authors, which has the similar form as the expressions proposed by Wheeler (2003) and some other researchers according to their experience and intuition, but the effective stress presented in this paper is derived on the basis of porous media theory and its assumptions, whose premise and hypothesis are clear. It is also pointed out that due to the complexity of the physical mechanism and various influencing factors, it is impossible in unsatu-rated soil mechanics to determine the deformation of solid skeleton by the effective stress only, like in the saturated soil mechanics. Besides, by using the expression of the deformation work and the free energy Aα for each phase, the applicability of the Phase Separation Principle proposed by Passman (1984) in unsaturated soil is discussed, and it is considered that the principle should not strictly apply to un-saturated soil mechanics.ZHAO ChengGang ZHANG XueDong 2008Science China(Technological Sciences)2008,51,9:9
14Maximum work configurations of finite potential capacity reservoir chemical engines显示文摘An isothermal endoreversible chemical engine operating between the finite potential capacity high-chemical-potential reservoir and the infinite potential capacity low-chemical-potential reservoir has been studied in this work.Optimal control theory was applied to determine the optimal cycle configurations corresponding to the maximum work output per cycle for the fixed total cycle time and a universal mass transfer law.Analyses of special examples showed that the optimal cycle configuration with the mass transfer law g∝△μ,where△μis the chemical potential difference,is an isothermal endoreversible chemical engine cycle,in which the chemical potential(or the concentration) of the key component in the working substance of low-chemical-potential side is a constant,while the chemical potentials(or the concentrations) of the key component in the finite potential capacity high-chemical-potential reservoir and the corresponding side working substance change nonlinearly with time,and the difference of the chemical potentials(or the ratio of the concentrations) of the key component between the high-chemical-potential reservoir and the working substance is a constant.While the optimal cycle configuration with the mass transfer law g∝△μc,where △μc is the concentration difference,is different from that with the mass transfer law g∝△μ significantly.When the high-chemical-potential reservoir is also an infinite potential capacity chemical potential reservoir,the optimal cycle configuration of the isothermal endoreversible chemical engine consists of two constant chemical potential branches and two instantaneous constant mass-flux branches,which is independent of the mass transfer law.The object studied in this paper is general,and the results can provide some guidelines for optimal design and operation of real chemical engines.Xia, ShaoJun Chen, LinGen Sun, FengRui 2010Science China Chemistry2010,53,5:9
15Mechanical properties and deformation mechanisms of Ti-3Al-5Mo-4.5V alloy with varied β phase stability显示文摘Evolution of deformation mechanisms and mechanical properties of Ti-3Al-5Mo-4.5V alloy with different β phase stability have been systematically investigated. β phase stability alteration is achieved through quenching temperature variation from dual α+β field(700℃) to single β field(880℃). Tensile tests at ambient temperature show that apparent yield strength of the alloy experiences an abrupt decrease followed by a significant increase from 700℃ to 880℃. Work hardening behavior is characterized by transition from the initial two-regime feature to the three-stage outlook. Concurrently, the maximum working hardening rate drops from 14000 MPa to 3000 MPa, which is concurrent with the shrinking volume fraction of primary a phase. Detailed discussion about the relationship between deformation mechanisms and β phase stability has been outlined.Q.Xue Y.J.Ma J.F.Lei R.Yang C.Wang 2018Journal of Materials Science & Technology2018,34,12:8
16信息技术与阅读教学整合的内涵探析显示文摘一、两个核心词语的概念界定整合(integration)--词,朗文当代英语辞典解释为:“ the combining of two or more things so that they work together effectively ”整合不是混合,它不是把概念上或组织上分立的两个或多个相关事物简单地叠加,而是把多个事物融合成为一个整体,使其具有系统的功能,追求更高的效率。在系统的整体性及其在系统核心的统摄、吴翔 贾曰平 2009语文教学与研究(综合天地)2009,,2:8
17Some basic principles for linear coupled dynamic thermopiezoelectricity显示文摘According to the basic idea of classical yin-yang complementarity and modern dual-complementarity, in a simple and unified way some basic principles for linear coupled dynamic thermopiezoelectricity can be established systematically. An important integral relation in terms of convolutions is given, which can be considered as the generalized principle of virtual work in mechanics. Based on this relation, it is possible not only to obtain the principle of virtual work and the reciprocal theorem in linear coupled dynamic thermopiezoelectricity, but also to derive systematically the complementary functionals for eleven-field, nine-field, six-field and three-field simplified Gurtin-type variational principles. Furthermore, with this approach, the intrinsic relationship among various principles can be explained clearly.罗恩 邝君尚 1999Science China Mathematics1999,42,12:8
18社会工作质性评估研究的回顾(1990-2003)对中国社会工作的启示显示文摘Objective: This paper reviewed and examined the quality of all the qualitative evaluation studies indexed by two key search terms of “qualitative” and “evaluation” in the Social Work Abstracts database from 1990 to 2003 against a number of criteria typically adopted in the field of qualitative research. The review led to a dissatisfactory finding of the low quality of many qualitative evaluation studies due to their insensitivity to the following issues: philosophical basis of the study, auditability (detailed documentation of the participants and data collecting procedure), biases (acknowledgement of biases and preoccupation, and steps to deal with them), credibility or trustworthiness (triangulation, peer checking and participant verification of the findings), consistency (reliability consciousness and audit trails), and critical interpretation of the data (alternative explanations, disconfirming evidence, and limitations of the study). It was recommended that researchers be cautious when utilizing findings from the published qualitative evaluation studies; that social workers be sensitive to the issue of quality when conducting qualitative evaluation studies; that researchers be critical when judging the qualitative evaluation studies in social work; that researchers develop a clear set of guidelines for qualitative studies; that social work training institutes design qualified qualitative research courses; that a database of social work in China be established; that researchers be engaged in more qualitative studies that demonstrate high quality; that myths in qualitative research be debunked; and that adequate training for social workers on qualitative evaluation studies be provided.石丹理 韩晓燕 邓敏如 2005社会2005,25,3:8
19改革开放30年以来中国医务社会工作的历史回顾、现状与前瞻显示文摘(接2012年第5期) 五、中国社会福利时代与医务社会工作发展前景 2010年是中国社会政策、社会立法、社会管理、社会服务、社会建设与社会福利元年,标志中国总体性社会福利制度,包括国家福利、儿童福利、家庭福利、妇女福利、残障福利、老年人福利、军人福利、社区福利和社会化福利时代来临,以改善民生为重点的社会建设和中国特色社会福利制度框架建设成为国家公共政策、社会政策议程的优先领域与战略重点。刘继同 2012社会工作2012,,7:7
20《运作中的构式:语言中概括的本质》简介显示文摘A.E.Goldberg 吴海波(简介) 2008当代语言学2008,10,4:7
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