引进ISO质量管理体系提高教学与管理水平

在高等职业院校教学与管理中引进ISO质量管理体系,可以规范相关的管理活动和职责,理顺内部管理关系,使学校各个管理层面、操作过程和工作环节既相互制约,又相互促进,从而形成一个标准化、规范化、程序化、科学化的组织管理,达到提升服务水平,降低教学成本,提高管理效能的目的。     

生产库存系统的稳定性和牛鞭效应分析

为了讨论供应链系统稳定性与牛鞭效应之间的关系,建立了生产库存控制系统的离散微分方程模型.基于Z-变换理论研究了生产库存系统的动态性.在库存充足和库存不充足2种运作机制下,研究了使生产库存系统稳定和不稳定的参数范围;在2种运作机制以及实际系统下,分别在稳定区域和不稳定区域中,基于不同的需求模式研究了生产交付速率波动性、系...     

Why I want to teach and how I feel about teaching—formation of teacher identity from pre-service to the beginning teacher phase

The aim of this study is to investigate the formation of student teachers’ teacher identity from pre-service to the end of the initial year in teaching. We explored why student teachers in Singapore have chosen to enter teaching and tracked changes in their attitudes and beliefs towards teaching at three time points: entry and exit of the initial teacher preparation programme and after 1 year of teaching. The findings showed that, in agreement with previous research, those who are attracted to the teaching profession were mainly motivated by altruistic or intrinsic factors. They also entered the initial training programme with a positive perception of the profession. However, at the point of exit, perceptions towards teaching showed a significant dip. After the first year of teaching, attitudes remained the same as they were at the point of exit. These factors influence the emerging sense of teaching identity.     

《NOVELL》局域网络系统电子邮件的实现

本文主要针对当今社会比较流行的《NOVELL》局域网络内用户间数据通信受限制这一问题,提出了一种新的具体解决办法,使用户之间信息传输的内容、范围更加广泛、可行。从而解决了《NOV-ELL》局域网络系统内用户间数据通信受限制这一难题。全文从数据通信角度对网内电子邮件的具体组织、发送到接收等方面都做了较详细的介绍,使广大网络用户了解到一种新的既简单又实用的数据通信方法,从而达到完善网络系统功能,促进《NOVELL》局域网络系统的应用和发展。     

唐代"河曲"地域农牧经济活动影响环境的力度及原因探析

唐代“河曲”地域呈现着农业经济与牧业经济并存、各有发展的局面。两种人类社会经济活动对自然环境的作用与影响,显示出明显的差异。农业经济基本上分布在“河曲”的边缘地带及黄河沿岸土壤基础、水源条件、地形条件较为优越的地方,使得人类农业经济行为和自然环境间的作用与反作用大体处在相对均衡的态势;畜牧业经济占据着“河曲”的大部分区域,其中定居型畜牧经济活动对局部草原环境施加了缓慢而深刻的影响,导致早期“毛乌素沙漠”的出现。两种人类社会经济行为对环境影响力度的差异相当明显,其原因就在于下列几个方面:封建政府民族政策因素、农牧人口数量差异、农牧人口地域分布差异、自然环境质量差异、利用土地资源方式及程度差异等。     

采用单元教学法对高水平运动员进行文化课教学的探讨

针对高水平运动员在接受文化教育中所面临的“时间不够”的难题，着重从改革教学方法入手进行分析与研究，摸索出单元教学法是解决这一难题的有效途径。     

话语标记语与英语课堂语境构建

从话语标记语的语用功能和英语课堂教学本身的特点出发，探讨话语标记语对英语课堂语篇和对英语课堂情景的构建功能。在英语课堂教学中，教师恰当地使用话语标记语，不仅可以很好地传输教师自己的信息，而且更有利于学生更深入、正确地理解教师的意图。     

肠蕨属(Diplaziopsis C．Chr.)的研究

 The fern genus Diplaziopsis C. Chr. of Index Filicum has long been considered as a monotypic one, with the sole species, D. javanica (B1.) C. Chr. from tropical Asia.  In 1906, H. Christ described a second species, Allantodia cavaleriana Christ (=D. cavale- riana C. Chr.) from Kweichow, West China, but this was since not fully recognized by fern students in general, being often considered as a variety of the first species.  This is certainly a mistake, as is shown by ample herbarium specimens today.  In the recent work on the genus, the writer has found among the herbarium material two additional new species from China, thus bringing the genus up to four species in Asia, mainly from China, where, as it is, the genus has its center of development from the long past.      Phylogenetically, Diplaziopsis C. Chr. represents one of the offshoots from the great stock of diplazioid ferns, of which the genus Diplazium Sw. constitutes the main body of the group and from which our genus differs chiefly in its leaves of a thin texture with reticulated venation, but not so much in its type of indusium as it has generally been emphasized by most botanists in the past, for, as it is, the type of indusium in Di- plaziopsis also prevails in many species of Diplazium, for which C. B. Clarke (Trans. Linn. Soc. ser. 2, Bot. I:495, 1880) created, but really superfluously, a subgenus Pseudal- lantodia, about which the writer will dwell in another paper in the near future.  Suffice it to say here that the indusium in Diplaziopsis as revealed by the species treated here is, indeed, typical of diplazioid ferns, only often, as it happens, with  its  adaxial  edge pressed so tight under the expanding sorus that it is unable to open freely along its upper free edge and, as a result, its thin vaulted back bursts open from the pressure of the ex- panding sorus underneath.      As a result of the present study, following four species of the genus have been re- cognized.      Diplaziopsis javanica (B1.) C. Chr. Ind. Fil. (1905) 227.      Wide spread in tropical Asia, northwardly to Bakbo and the southern part of Yun- nan, China.      D. cavaleriana (Christ) C. Chr. Ind. Fil. Suppl. I (1913) 25.      Ranges from West China through northern part of Fukien of East China to Japan.      D. intermedia Ching, sp. nov.      Endemic in West China:  Mt. Omei, Szechuan, and Kweichow.      D. hainanensis Ching, sp. nov.      In conclusion, it may be pointed out that with the modern plant taxonomy pursued in a more efficient manner than in the past, and especially by the introduction of the cytotaxonomic methods, the so-called “monotypic genera”, as conceived by the orthodox systematists, will continue to prove, to a great extent, to be lack of  enough  scientific ground.  The fact that the “monotypic genus” of Diplaziopsis C. Chr. is now found to be a genus of four well-defined species is once again an instance to illustrate the pointat issue.     

Magnetic Field Diffusion Through Infinite Conducting Media

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.