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717篇 您的检索式:作者名="J.H."
    题名 作者 年代 出处 被引量
1作为科学的法学的无价值性——在柏林法学会的演讲显示文摘法学的价值何在 ,其科学性如何 ?此问题在现今我国的法学界并不是个问题 ,即使在德国法律界 ,也没有人像基尔希曼这样径直地对法律的科学性予以否定。基尔希曼指出法学作为科学的无价值性的理由是 :第一 ,他以亚里士多德的对象依时空不可变性为科学分划标准 ,而不是以其为科学分类之准则 ,否认法学的科学品质 ,因之将法学从科学中排除出去 ;第二 ,法学对社会生活及现实之无价值。作为法学研究对象的法律的变动性、价值选择性 ,僵化、抽象、武断的实在法使自然法、法学陷入窘境 ,法学忽视对自然法的考察 ,仅专注于实在法的谬误和缺陷 ,却无可靠手段使人们更易于理解法律、减轻法律发展所带来的痛苦与负担。此文冒学界之大不韪 ,虽有偏颇之处 ,却具有极高的理论价值。拉伦茨曾以《论作为科学之法学的不可缺少性》一文予以回应。本刊谨投他山之石于我国法学界 ,以期有助于学界对法学的自我反思和深入研究。J.H.冯.基尔希曼 赵阳 2004比较法研究2004,18,1:116
2MICROSTRUCTURAL MODEL OF GATORIZED WASPALOY IN THE ISOTHERMAL FORGING PROCESS显示文摘A microstructural model, which was to predict the evolution of microstructure of Gatorized Waspeloy in the isothermal forcing process, was developed in terms of dynamic recrystallization and grain growth. Three steps of experiment were conducted during developing the model: (1) .Specimens were compressed in M FS testing machine; (2) Dynamic recrystallization and grain growth were discussed; (3) Dynamic recrys- tallization model and grain growth mode were set up. The agreement of simulated results and experimental data is fine.J.P. Hu (Chongqing Iron and Steel Designing Research Institute, Chongqing 400013, China) J. Y. Zhuang, J.H. Du, Q. Deng, D. Feng and Z. Y. Zhong (Central Iron and Steel Research Institute, Beijing 100081, China) P. Janschek and J. Kramer (Thyssen Umformte 2001Acta Metallurgica Sinica(English Letters)2001,14,3:61
3文化生态学的概念和方法显示文摘19世纪和20世纪初,有一股浪潮横扫了科学领域,冲击了过去的基本概念之一——单纯的因果关系观点,即事物或事件直接由前在的特定事物或事件所决定。然而这一势不可当的理论变化并没有清除宿命论,但它引导科学家在一切分析水平上去寻求多方面的关系和相互作用的领域。J.H.斯图尔德 玉文华 1988世界民族1988,,6:51
4文化生态学的概念和方法显示文摘生态学研究的目标冒着可能会给本来就含糊的术语增加混乱的风险,本文对作为解释环境影响文化之启发性方案的、与人类有关的生态学概念作一些发挥。为了把本目的和方法与生物、人类和社会生态学的目的和方法区别开来,就需要使用“文化生态学”一词。鉴于文化生态学还没有被普遍理解,因此,必须从说明它在哪些方面不同于其他生态学概念开始,然后再论证它在哪些方面补充了人类学的历史探讨,以便确定文化在适应环境中所包含的创造过程。J.H.斯图尔德 王庆仁 1983世界民族1983,,6:53
5鉴别瘤样脱髓鞘病变与胶质瘤及中枢神经系统淋巴瘤:CT平扫对于常规MRI增强检查的补充价值显示文摘目的回顾性研究在瘤样脱髓鞘病变与原发性胶质瘤及中枢神经系统淋巴瘤的鉴别中,CT平扫检查对于常规MRI增强检查是否有补充价值。方法该研究得到了当地伦理委员会的批准.并免除病人知情同意。回顾性分析15例瘤样脱髓鞘病变病人(7例女性,8例男性;平均年龄42岁,年龄范围27~57岁)和48例原发性脑肿瘤病人(27例女性,21例男性;平均年龄48岁,年龄范围19~70岁;10例淋巴瘤,38例胶质瘤)的CT平扫及增强MR影像。根据MR影像有无强化,D.S. Kim D.G. Na K.H. Kim J.H. Kim E.Kim B.L. Yun 高光峰(译) 夏爽(校) 2009国际医学放射学杂志2009,32,4:42
6图书馆哲学显示文摘回顾'以最少的花费让大多数人得到最好的图书'简直就不能称作图书馆哲学.然而,多少年来,或明或暗地,图书馆就是这么做的.专业术语从未从文化或社会联系角度作过考察.与其说是一种哲学,一种对信任的献身,不如说是一种信条.的确,关于图书馆信任,O.加西屋(Garceau)在其《公共图书馆及行政程序》(1949)一书的某些段落谈到过:为什么可以称'图书馆信任'。J.H.谢拉 卿家康 詹新文 1987大学图书馆通讯1987,5,4:27
7高速切削在模具加工中的应用及发展趋势显示文摘叙述了高速切削技术的意义 ,并介绍了它在电极制造、淬硬材料型腔的直接加工及样件的快速成型中的应用及优点 ,并简要说明对高速铣床的要求。J.H.绍克 2000航空制造技术2000,43,3:19
8关于图书馆学的基本原理显示文摘一、回顾'以最少的花费,为绝大大多数人提供最好的书'这种观点,几乎不能称之为图书馆界的信条了。但是,多少年来,这个观点却自觉或不自觉地被人们所接受。人们从来没有给这个问题下过确切的定义,也没有考察过它与文化或社会的关系。因此,与其说它是一种哲理,或一种信念的推崇,倒不如说它是一个教条。奥列佛·加库(Oliver Ga-rceau)在他的《公共图书馆与政治作用》(1949)一书中,对'图书馆信念'(Li-brary faith)作了一番论述。他说:J.H.谢拉 孔青 况能富 1982中国图书馆学报1982,10,2:17
9“法律与发展研究”的特性显示文摘象在第一章中讨论中所指出的那样,“法律与发展研究”(SLADE)是一种用定量的资料和方法所进行的知识探讨,旨在建立和检验理论。我们感兴趣的领域首先是法律与发展,故早在这种探讨的设计时就有必要合理地选定两个关键性概念的准确含义;这两个概念是“发展”(我们限定它意指“发展中国家的社会变化”)和“法律”(指“法律制度”)。这样一来,对被我们称作“法律文化”的第三个变项的需要就变得显而易见了。J.H.梅里曼 D.S.克拉克 L.M.弗里德曼 俗僧 1990比较法研究1990,4,2:16
10Effects of Terracing and Agroforestry on Soil and Water Loss in Hilly Areas of the Sichuan Basin, China显示文摘Soil erosion in hilly areas of the Sichuan Basin is a serious concern over sustainable crop production and sound ecosystem. A 3-year experiment was conducted using the method of runoff plots to examine the effects of terracing and agroforestry in farmland systems on soil and water conservation of slope fields in the hilly areas in Jianyang County, Sichuan Province, Southwestern China. A power function (Y = aXb) can statistically describe the relationship between water runoff (Y) and rainfall (X). The regression equation for the treatment of sloping terraces with crops (Plot 2) is remarkably different from that for the treatment of sloping terraces with grasses and trees (Plot 1) and the conventional up- and down-slope crop system (Plot 3) regarding equation coefficients, while regression equations are similar between Plot 1 and Plot 3. Water runoff amount and runoff coefficient of slope fields increased by 21.5~41.0 % and 27.5~69.7 % respectively, compared to those of sloping terraces, suggesting that terracing notably reduced the water runoff in the field. In the case of sloping terraces, lower amount of water runoff was observed on sloping terraces with crops than on sloping terraces with grasses and trees. Sediment yields on the slope fields in the normal year of rainfall distribution were notably higher (34.41~331.67 % and 37.06~403.44 % for Plot 1 and Plot 2, respectively) than those on sloping terraces, implying that terracing also plays a significant role in the reduction in soil erosion. It is suggested that terracing with crops is significantly effective for soil and water conservation in cultivatedfarmland, while the conventional practice of up- and down- slope cultivation creates high rates of water runoff and soil sediment transport. Terracing with grasses and fruit trees shows a less reduction in water runoff than terracing with crops, which was observed in the 3-year experiments.J.H. ZHANG Z.A. SU G.C. LIU 2008Journal of Mountain Science2008,5,3:16
11DESIGN AND PROPERTIES OF A FUNCTIONALLY GRADIENT CERAMIC TOOL MATERIAL显示文摘Based on the analyses of the severity of cutting process as well as the failure mechanisms of ceramic tools, a model for designing functionally gradient ceramic tool materials with symmetrical distribution is presented, by which a Al 2O 3/(W,Ti)C ceramic tool material FG 2 was developed. Multi objective optimization method was employed in designing the compositional distribution of this ceramic tool material. The results of both continuous and intermittent cutting tests are indicative of the much better cutting behavior of the functionally gradient ceramic tool FG 2 than that of the common ceramic tool SG 4.J. Zhao,X. Ai, J.H. Zhang, J.X. Deng and C.Z. Huang Department of Mechanical Engineering, Shandong University of Technology, Jinan 250061,China 1999Acta Metallurgica Sinica(English Letters)1999,12,5:13
12颈动脉狭窄:无创伤性检查的准确性——个体病人数据的Meta分析显示文摘目的评价临床相关的无创伤性影像学检查——US、CT血管成像、MR血管成像和MR增强血管成像对于诊断重度和中度有症状的颈动脉狭窄的准确性;确定先期各种特异性临床因素和临床表现对诊断准确性的影响:评估两种无创性检查的一致性。方法利用原始检查资料得到伦理委员会认可。所有的资料都是匿名的。利用个体病例无创性影像学检查的资料(IPDS)评估有症状的颈动脉狭窄的敏感度、特异度和一致性:比较同侧与对侧动脉:比较IPDs与文献的评估结果;F.M. Chappell J.M. Wardlaw G.R. Young J.H. Gillard G.H. Roditi B. Yip 郑梅竹(译) 夏爽(校) 2009国际医学放射学杂志2009,32,4:12
13Electromagnetoelastic behaviors of functionally graded piezoelectric solid cylinder and sphere显示文摘电镀物品上的分析研究磁电的行为为稳固的柱体和范围在一个一致磁场放了并且使遭到了到外部压力并且电的装载的机能上地分级的压电的材料(FGPM ) 被介绍。什么时候机械,电并且材料的磁性在 FGPM 稳固的柱体在磁场向量的光线的方向,准确排水量,压力,电的潜力和不安遵守一条相同幂定律,范围被使用 electromagnetoelasticity 的无穷小的理论获得。数字例子也显示出材料不同类的重要影响。注意选择不同类参数 β 的特定的值能优化电镀物品有趣磁电的回答,它将具有在现代工程图案的特别重要性。H. L. Dai Y.M. Fu J.H. Yang 2007Acta Mechanica Sinica2007,23,1:10
14步行城市——一个可持续发展计划显示文摘J.H.克劳福德 甘海星 2000世界建筑导报2000,15,1:9
15旧篇新章──美国都市传说略谈显示文摘布鲁范德(J·H·Brunvand)教授是美国著名的 民俗学家,曾担任美国民俗学会的主席,在民俗学园地辛勤耕 耘三十余载,成就斐然,著述甚丰,其代表作《美国民俗学》已 被译成中文在国内出版(汕头大学出版社,1993),受到学界的 重视和好评。布氏涉猎的领域相当宽泛,但影响最大的是他 在都市传说方面所做的开创性搜集和研究工作。八十年代 初,他出版了都市传说研究专著《消失的搭车客──美国都市 传说及其意义》,在学界内外产生了广泛的影响。随后,他又 陆续出版了《婴儿火车》等多部都市传说著述,他因此技人称 为“民间侦探”、“都市传说先生”。本文节译自《消失的搭车客 ──美国都市传说及其意义》第一章,副标题为译者所加。J.H.布鲁范德 李扬 王珏纯 2000民俗研究2000,,4:9
16STUDY ON PTA CLAD (Cr,Fe)_7C_3/γ-Fe CERAMAL COMPOSITE COATING显示文摘A wear resistant (Cr,Fe)7C3/γ-Fe ceramal composite coating was fabricated on substrate of a 0.45% C carbon steel by plasma transferred arc (PTA) cladding process using the Fe-Cr-C elemental powder blends. The microstructure, microhardness and dry sliding wear resistance of the coat- ing were evaluated. Results indicate that the plasma transferred arc clad ceramal composite coat- ing has a rapidly solidified microstructure consisting of’ blocky primary (Cr,Fe)7C3 and the inter- blocky (Cr,Fe)7C3/γ-Fe eutectics and is metallurgically bonded to the 0.45%C carbon steel sub- strate. The ceramal composite coating has high hardness and excellent wear resistance under dry sliding wear test condition.J.B. Liu J.H. Huang L.M. Wang 2005Acta Metallurgica Sinica(English Letters)2005,18,6:9
17THE COUPLED FEM ANALYSIS OF THE TRANSIENT TEMPERATURE FIELD DURING INERTIA FRICTION WELDING OF GH4169 ALLOY显示文摘The inertia friction welding process is a non-linear process because of the interaction between the temperature field and the material properties as well as the friction force. A thermo-mechanical coupled finite element model is established to simulate the temperature field of this process. The transient temperature distribution during the inertia friction welding process of two similar workpieces of GH4169 alloy is calculated. The region of the circular cross-section of the workpiece is divided into a number of four-nodded isoparametric elements. In this model, the temperature dependent thermal properties, time dependent heat inputs, contact condition of welding interface, and deformation of the flash were considered. At the same time, the convection and radiation heat losses at the surface of the workpieces were also considered. A temperature data acquisition system was developed. The temperature at some position near the welding interface was measured using this system. The calculated temperature agrees well with the experimental data. The deformation of the flash and the factor affecting the temperature distribution at the welding interface are also discussed.L.W. Zhang J.B. Pei Q.Z. Zhang C.D. Liu W.H. Zhu S. Qu J.H. Wang 2007Acta Metallurgica Sinica(English Letters)2007,20,4:8
18NUMERICAL SIMULATION OF THE THERMO-MECHANICAL PROCESS FOR BEAM BLANK CONTINUOUS CASTING显示文摘The aim of this study was to simulate the solidification process of beam blank continuous casting, and then find the reasons for the typical defects of the beam blank. A two-dimensional transient coupled finite element model has been developed to compute the temperature and stress profile in beam blank continuous casting. The enthalpy method was used in the heat conduction equation. The thermo-mechanical property in the mushy zone was taken into consideration in this calculation. It is shown that at the mold exit the thickness of the shell had its maximum value at the flange tip and its minimum value at the fillet. The temperature had a great fluctuation on the surface of the beam blank in the secondary cooling zone. At the unbending point, the surface temperature of the web was in the brittleness temperature range under the present condition. To ensure the quality, it is necessary to weaken the intensity of secondary cooling. At the mold exit the equivalent stress and strain have higher values at the flange tip and at the web. From the spray 1 to the unbending point, the maximum values of stress and strain gradually moved to the internal section of the flange tip and the web. However, whenever, there were bigger stress and strain values near the flange tip and the web than in the other parts, it must be very easy to generate cracks at those positions. Now, online verification of this simulation has been developed, which has proved to be very useful and efficient to instruct the practical production of beam blank continuous casting.W. Chen Y.Z. Zhang C.J. Zhang L.G. Zhu B.X. Wang W.G. Lu J.H. Ma 2007Acta Metallurgica Sinica(English Letters)2007,20,4:8
19A COMPUTERIZED SYSTEM ON KINETIC ANALYSIS AND EVALUATION OF GAS/SOLID REACTIONS显示文摘The present paper presents the structure, features and functions of a computerized system on kinetic analysis and evaluation of gas/solid reactions, KinPreGSR. KinPreGSR is a menu driven system, can be operated with MS Windows as workbench in a PC computer. It has been developed using visual C++ with FoxPro hybrid coding technique.KinPreGSR combines the characteristics of gas/solid reactions with the kinetic models as well as mass and heat transfer equations. The database files were established for the apparent activation energies of some reduction and decomposition reactions to allow the prediction of the reaction kinetics to some extents. Outputs can be displayed using graphical or numerical forms. Examples regarding the oxide reduction and carbonate decomposition under isothermal conditions are given to show those functions.J.H. Liu, J. Y. Zhang and S.K. WeiSchool of Metallurgical and Ecological Engineering, University of Science & Technology Beijing, Beijing 100083, China 2003Acta Metallurgica Sinica(English Letters)2003,16,6:8
20FE SIMULATION OF CENTER CRACK OCCURRENCE IN TUBE ROUNDS DURING TWO-ROLL ROTARY ROLLING PROCESS显示文摘With the aid of FE (finite element) code MSC.Superform 2005, 2-D coupled thermo-mechanical simulation of center-crack occurrence in round billet during 2-roll rotary rolling process was presented using Oyane ductile fracture criteria. A simple modeling is put forward based on the spiral motion of the workpiece as an essential characteristic in movement. The influence of the feed angle and the entry cone angle of the main roll on the process was taken into account in the modeling. The soundness for simplifying the 3-D rotary rolling into a 2-D problem was discussed. By adopting the parameters of Diescher piercer in 140mm mandrel mill of Bao Steel, the distribution and development of strain / stress were analyzed, and the eigen value of ductile fracture as well. The critical percentage of diameter reduction was obtained from the simulation. The result showed a good agreement with the experimental value, and therefore was of widely guiding significance to the practical process for rationally formulating the deformation parameters of steel tube piercing.S.Z. Li J. Xu Y.D. Yin J.G. Xue F. Pan J.M. Zheng J.H. Yoon 2007Acta Metallurgica Sinica(English Letters)2007,20,3:7
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