CAS理论视角下Web2.0序化研究     

陈金霞 《图书情报知识》2008,(3):19-23

CAS理论认为宏观的演化过程可以从个体行为规律中找到根源,本文以此为依据从系统微观层面出发,探讨了Web2.0系统的序化机制。本文以CAS理论为蓝图,构建了Web2.0的理论模型,界定了系统主体及各特征机制,并结合豆瓣实例阐释了主体适应与交互导致有序的机理。  相似文献   

The role of a digital engineering platform in appropriating the creation of new work-related mind-set and organisational discourse in a large multi-national company     

《International Journal of Information Management》2019

This paper reports on a case study involving a strategic and innovative approach to creation of an in-house multifaceted digital engineering platform (the DEP) in overcoming a number of organisational problems at a multinational engineering company. The DEP was to be used strategically for simplifying the operational complexity and to create and appropriate new work-related mind-set and new organisational discourse to achieve homogenous working across the organisation, which is a huge challenge. The need for this system emerged from the need to resolve many organisational services related problems that carried phenomenal amount of processes, health and safety risks and to regulate, and, control the running of engineering project. Research data were collected using a longitudinal case study approach over a period of six months. In order to make sense of how the DEP helped the organisation, the study used certain elements of Extended Structuration Theory as a lens to assess the case study. This research discovered that the DEP succeeded in creating and appropriating work-related mind-set and organisational discourse. It also had real influence on working processes and employees at all levels while encouraging transparency, responsiveness, agility and accountability. It continues to help the organisation to govern, manage and maintain good standard of service but many barriers still remain.  相似文献   

刚性常微分方程的数值解法在化学动力学中的应用   总被引：1，自引：0，他引：1  

金翔秋  林娟娟 《温州职业技术学院学报》2003,3(2):46-49

解刚性常微分方程已成为复杂化学反应研究的重要途径，本介绍了化学动力学计算中的刚性问题和数值解法，并着重讨论常用的吉尔(Gear)法和半隐式龙格库塔(Semi-implicit Runge-Kutta)法及其在化学动力学中的应用。  相似文献   

基于复杂网络方法的远程教育网站实证研究     

张瑞  水静 《现代远程教育研究》2011,(6):77-81

目前我国远程教育网站存在资源数量多,但内容联系不够紧密、信息搜索耗时长、信息的安全性与网站的稳定性较差等问题。复杂网络研究可以通过实证方法度量网络的结构特征和形成规则．进而预测网络系统的行为。中关远程教育网站经复杂网络方法实证分析发现：远程教育网站的建设要有统一的规划,要注意信息的排布、层次结构的架构以及内容的联系,提高信息的利用率,并建立有效的病毒防护和故障排除机制。利用复杂网络的链路预测方法和免疫策略还可以在远程教育网站中实现推荐机制和病毒防护。  相似文献   

复超球上Schwarz引理的推广及应用     

谭海鸥 《五邑大学学报(社会科学版)》1993,(3)

本文研究了经典的Schwarz引理在复超球上的推广并由此建立了复单位球的Poincar(?)度量。此外还给出了它们在多元复分析中的若干应用。  相似文献   

Degradation kinetics and mechanisms of phenol in photo-Fenton process     

何锋  雷乐成 《浙江大学学报(A卷英文版)》2004,5(2):198-205

Phenol degradation in photochemically enhanced Fenton process was investigated in this work. UV-VIS spectra of phenol degradation showed the difference between photo-Fenton process and UV/H2O2, which is a typical hydroxyl radical process. A possible pathway diagram for phenol degradation in photo-Fenton process was proposed, and a mathematical model for chemical oxygen demand (COD) removal was developed. Operating parameters such as dosage of H2O2 and ferrous ions, pH, suitable carrier gas were found to impact the removal of COD significantly. The results and analysis of kinetic parameters calculated from the kinetic model showed that complex degradation of phenol was the main pathway for removal of COD; while hydroxyl radicals acted weakly in the photo-Fenton degradation of phenol.  相似文献   

浅析俄语主从复合句中的分解型（复）句     

王维维  刘春富 《鸡西大学学报》2006,6(1):45-45,64

本文就俄语主从复合句中分解型(复)句进行了整理、归纳和分析,以便学生更好地掌握与理解。  相似文献   

Domain Coloring and the Argument Principle     

Frank A. Farris 《PRIMUS》2017,27(8-9):827-844

Abstract

The domain-coloring algorithm allows us to visualize complex-valued functions on the plane in a single image—an alternative to before-and-after mapping diagrams. It helps us see when a function is analytic and aids in understanding contour integrals. The culmination of this article is a visual discovery and subsequent proof of the Argument Principle, which relates the count of poles and zeros of a meromorphic function inside a contour to the accumulated change in argument of the function around the contour. Throughout, I offer connections to standard learning goals of courses in complex variables.  相似文献   

Differences of math anxiety groups based on two measurements,MASS and EEG     

Sang S. Choi-Koh  Byeong G. Ryoo 《教育心理学》2019,39(5):659-677

This article investigated how mathematic anxiety (MA) of Korean middle school students could be reduced by comparing analytically their cognitive neuroscience and questionnaire results. We developed a three-hour Complex Treatment Program (CTP) on quadratic functions for the study. In the summer of 2016, we collected data of the pre and post MA questionnaires by Mathematics Anxiety Scale for Students (MASS), the percent of correct answers (PCA) and reaction time (RT) by E-prime program, and also brain-imaging data of the event related potentials (ERP) by Electroencephalograph (EEG) using computer-based functional F-G model. The result indicated the CTP to be effective with the group with higher math anxiety and the group with higher achievement respectively. The MASS result was verified with the better performance of PCA on type G, which was measured by E-prime program. Some interesting patterns were revealed on brain-imaging data by EEG, indicating more brain activities with the MA groups.  相似文献   

汉字不能“弃简复繁”的三大理由     

林桂生 《黄冈职业技术学院学报》2011,13(4):51-54,68

第11届全国政协会上,有些人联名建言要恢复繁体字。对"此"现提出不能"弃简复繁"的三大理由:①汉字发展的历史是沿着一条逐步简化的道路前进的;②现代的简化字是汉字发展中一个新的里程碑;③书写便捷是汉字向前发展的动因。从而说明"弃简复繁"的提案是不可取的,汉字自身的演变是遵循着一条"避繁趋简"规律的。  相似文献