Magnetic Field Diffusion Through Infinite Conducting Media     

G.F. Nalesso  A. Stella 《Journal of The Franklin Institute》1981,311(2):67-92

The diffusion of the magnetic field due to a step current in an infinitely long ideal conductor, through infinite media is discussed. An analytical solution of the field diffusion through two concentric cylinders of different conductivity is derived using a generalized Ohm's law which considers both solid and fluid conductors. A rigorous mathematical treatment which can be generalized to any number of conducting cylinders is presented.The limiting case of an external superconducting medium is discussed and it is shown that with all the other parameters fixed it represents a lower limit in diffusion time.  相似文献   

Factors that Influence Information-Seeking Behavior: The Case of Greek Graduate Students     

Stella Korobili  Aphrodite Malliari 《The Journal of Academic Librarianship》2011,37(2):155-165

The purpose of this survey is to determine the information-seeking behavior of graduate students of the Faculties of Philosophy (8 Schools) and Engineering (8 Schools) at the Aristotle University of Thessaloniki. Discipline did not seem to affect information-seeking behavior critically. The majority of the sample demonstrated a low to medium level of information-seeking behavior. This survey revealed the need for improving the level of graduate students' information literacy skills.  相似文献   

土地利用总体规划对生态系统服务价值的影响——以淳安县为例     

刘小伟  王秀珍  黄敬峰  毕雪梅  李波 《科技通报》2011,27(5)

以淳安县土地利用规划为研究对象,采用Costanza的生态系统服务价值计算方法,参照谢高地中国陆地生态系统单位服务价值系数,结合敏感度分析,探讨了淳安县土地利用总体规划对生态系统服务价值的影响。研究结果表明,在土地利用总体规划期间(2006-2020年),淳安县生态服务价值总体呈下降趋势,生态系统服务价值将净减少68.91×10~6元;生态系统服务价值下降的主导因素是规划建设占用和耕地补充。规划实施过程应该加强对生态环境的保护。  相似文献   

蔡邕的赋学思想研究——兼及汉魏文学观念的转变     

杨齐  曹艳华 《甘肃高师学报》2014,(3):6-9

处于东汉晚叶的文学家蔡邕受到社会形势特别是辞赋创作实际的影响,通过创作和理论引导把辞赋从经学控制中抽离出来,使之不再担任"匡国理政"的重任,而更多的走向个体人生,走向世俗情感,走向"聊以游意",回归文学的审美本质。蔡邕对辞赋的创作肯定态度、对辞赋审美愉悦功能的肯定、从艺术层面的分类以及内容上情怀的抒写构成了一个比较完善的赋学理论体系,对东汉晚叶以及建安时期甚至整个中国古代的文学创作与文学理论发展产生了重要影响,具有一定的价值意义。  相似文献   

日语复合动词「V-V」型的副词化     

王育洁 《衡阳师范学院学报》2014,(5):118-123

非范畴化是指为在一定的条件下,范畴成员逐渐失去范畴特征的过程。这些成分在重新范畴化之前处于一种不稳定的中间状态,它们丧失了原有范畴的某些典型特征,同时获得了新范畴的某些特征。以非范畴化理论为依据,探讨日语复合动词的构成要素在非范畴化阶段的副词化现象。从意义上看,复合动词副词化的构成要素在副词化过程中丧失了原意,获得了加强主要动词动作的程度副词意;从句法特征上看,副词化的构成要素丧失格支配能力。  相似文献   

高师公共心理学渗透心理健康教育思考与实践     

唐芳贵 《衡阳师范学院学报》2014,(5):141-143

心理健康教育渗透是解决高师公共心理学教学内容枯燥、教学方法单调、严重脱离教育和生活实际等问题的有效途径。基于重要性认识,提出了准确定位、目标融合,案例教学、体验为主,创新模式、三助为体等渗透路径,以及加强教材建设和师资培训等保障措施。  相似文献   

核医学放射性核素治疗的研究现状及前景(英文)     

Chai-Hong YEONG  Mu-hua CHENG  Kwan-Hoong NG 《Journal of Zhejiang University. Science. B》2014,(10)

放射性核素的临床应用及研究已历数十载,已有碘-131、磷-32、锶-90及钇-90等众多放射性核素被成功用于治疗良恶性疾病。随着新的放射性核素及药物不断应用于骨转移瘤疼痛治疗、神经内分泌肿瘤及其他良恶性肿瘤治疗,放射性核素治疗得到了快速发展。目前,放射性核素治疗已进入蓬勃发展期;在亚洲,由于甲状腺和肝脏肿瘤的高发病率,促进了放射性核素治疗及其靶向治疗研究的日益发展。随着放射性核素与其他药物的联合应用,放射性核素治疗肿瘤的临床价值必将显著提高。  相似文献   

ERIC/CUE: Urban education research information     

Eva Oppenheim  Stella Torgoff 《The Urban Review》1980,12(3):163-168

  相似文献   

Ethnic identity and close friendship in Chinese-American college studentsL'identité ethnique et l'amitié intime chez les étudiants chinoisaméricainsIdentidad etnica y amistad intima entre estudiantes chino-americanos     

Stella Ting-Toomey 《Int J Intercult Relat》1981,5(4):383-406

This article reports an empirical study on the relationship between ethnic identity and close friendship communication patterns in Chinese-American students. The friendship communication variables were: proximity, network size, frequency of interaction, perceived similarity, and degree of intimacy between subjects and close friends. Several hypotheses in this study were confirmed. Generation difference was a reliable predictor of ethnic identity on the 1st and 2nd generation subjects. Proximity was found to be a crucial factor that influenced the ethnicity of subjects' close friendship networks. All friendship variables were related on the zero-order correlation analyses. However, the relationship between ethnic identity and the ethnicity of subjects' friendship networks was not supported. This was explained in terms of sample bias, and the variable of friendship as a universal relational bond that transcends culture. The paper concludes with a set of research questions for future work on ethnic identity and cross-cultural friendship communication.  相似文献   

五年来我国职业教育与区域经济协调发展研究综述     

黄立志  李名梁 《职教通讯(江苏技术师范学院学报)》2010,(6)

2005-2010年五年来,我国对于职业教育与区域经济协调发展的研究趋热,对它们之间的关系探讨比较热烈.在总结了其协调现状的基础上,归纳了宁波模式等十多种模式.今后,这方面的模式研究还有待深入,高等职业教育将继续强化,大自然区域的职业教育模式需要开展研究.  相似文献