美国远程教育的新探索——西部州长大学的办学理念与实践

西部州长大学作为美国远程教育领域具有特色的虚拟大学,因其办学的灵活性和创新性,创办9年来一直受到美国远程教育领域的关注。本文在简要介绍其办学动因和发展现状后,分析其办学的特色,以期对我国远程教育的发展有所借鉴。     

基于J2EE的企业MIS的设计模型

提出了一个基于J2EE平台的企业MIS的设计模型,阐述了系统基于J2EE平台的架构和各个部分所应用的技术,包括多层体系结构、EJB、JSP及Servlet多项技术,其中重点介绍了EJB的设计,并结合作者开发此系统的实践,总结了其中的经验和教训.     

以调整为契机加强师资队伍建设

教师队伍建设是学校基本建设的主要任务之一,是校长的重要职责。学校应以调整为契机,积极稳妥地充实教师队伍;制定相关政策,支持教师进修学习;以科研为先导,提高教师的科研能力与水平;加强教学评估督导,促进教师提高教育教学质量;以现代信息技术为重点,加强教师队伍的全员培训。     

Deterministic and randomized scheduling problems under the lp norm on two identical machines

Parallel machine scheduling problems, which are important discrete optimization problems, may occur in many applications. For example, load balancing in network communication channel assignment, parallel processing in large-size computing, task arrangement in flexible manufacturing systems, etc., are multiprocessor scheduling problem. In the traditional parallel machine scheduling problems, it is assumed that the problems are considered in offline or online environment. But in practice, problems are often not really offline or online but somehow in-between. This means that, with respect to the online problem, some further information about the tasks is available, which allows the improvement of the performance of the best possible algorithms. Problems of this class are called semi-online ones. In this paper, the semi-online problem P2|decr|lp (p＞1) is considered where jobs come in non-increasing order of their processing times and the objective is to minimize the sum of the lp norm of every machine's load. It is shown that LS algorithm is optimal for any lp norm, which extends the results known in the literature. Furthermore, randomized lower bounds for the problems P2|online|lp and P2|decr|lp are presented.     

大连开发区2128名3～6岁幼儿的龋病流行病学调查

我们对大连开发区 ３２所幼儿园 ２ １２８名 ３－６岁幼儿进行了龋病流行病学调查， 按照卫生部的标准，按年龄分为四组．调查结果显示：患龋率随年龄增长而上升，易感 牙位依次为第一乳磨牙、第二乳磨牙、上颌乳中切、乳侧切、乳磨牙下颌乳切牙．平均 患龋率为８１．１６． 乳牙早失不但给幼儿进食带来不便，而且直接影响恒牙发育．我们建议窝沟封闭不 但要对六龄齿，而且要从乳磨牙做起．     

韩信悲剧之再认识——读《史记·淮阴侯列传》

淮阴侯韩信的悲剧令千古叹惋，论述其成因可谓代有异说。然而，当我们对这一悲剧重新予以认识时发现，构成韩信悲剧的要素是多方面的，有封建制度的残酷和封建统治人才观的狭隘，也有其自身的人格缺憾。     

医学院校开展“逆向工程与3D打印技术”项目化教学探讨

"逆向工程与3D打印技术"课程的开设,是为了培养医学院校学生的医工结合的能力。以项目为驱动将知识点融入项目中进行教学,采用计算机软件操作、实验设备操作等教学手段,使学生了解医学领域相关的逆向工程和3D打印技术的基本理论知识和实践应用技能,为现代医学培养医工结合的复合型应用人才。     

Convergent designs in fine fashion: An evolutionary model for stylistic innovation

In this paper we propose and test an evolutionary model of stylistic innovation, that is the change in the aesthetic and symbolic elements of products and services. Style is an increasingly relevant phenomenon in many industries and our goal is to develop a model of how styles get introduced and adopted. We build on existent literature on technological change to frame the dynamics of how style changes across time. In the model we propose, companies face periods of ferment with relevant stylistic variations and periods of convergence on a single trend—that is the stylistic convergent design versus the technologic dominant design. We identify the drivers of convergence in stylistic innovation. We test the model with a longitudinal empirical study (1984-2002) in the fine fashion industry, explaining the main differences between a stylistic and a technological evolutionary model.     

组织中的学习战略演化及其案例研究

经济的全球化、商业环境的剧烈变化促使组织采取相应的学习战略来提高自身的学习能力。由于商业环境的不同、组织自身的条件各异，组织采取的学习战略会各不相同。文章讨论了一个组织内学习战略演化的三阶段模型，这三个阶段是：职工开发、逼近的商业需要、未知的商业开发。然后，对Motorola大学在公司内战略地位的变化历程进行了剖析。最后得出了一些有借鉴意义的经验和结论。     

RFID技术基础及其基本应用

无线射频识别技术,是一种非接触的自动识别技术,其基本原理是利用射频信号和空间耦合传输特性实现对物体的识别。本文面向欲了解RFID的基本工作方式、系统模块以及在供应链上应用的技术人员和商务人员。最后希望这篇文章能够帮助读者扫清RFID中的疑问和盲点。