高层办公建筑系统化结构概念设计研究

本文主要从设计目标、设计限制和适用范围等方面,研究了高层办公建筑系统化结构的概念设计。

未来智能通信工程系统化改造的趋势

我国城市现代化的改造内容之一是通信工程改造,它对整个社会的发展具有不可忽略的作用,尤其是对日常生活的通信以及信号传递等发挥了一系列不可取代的作用。随着时代的发展,科学技术的提升促进多功能类型的通信设备进行推广运用,在另一方面,通信工程之所广泛发展,是由于计算机网络的普及。该文针对智能通信工程系统化的一系列问题展开具体的剖析。

基于生态学习环境下结构化资源库系统的构建和探究

学习生态是一项新型研究课题,在国内的发展时间并不长。基于国外研究专家对学习生态理论和资源构建模型的分析可知,网络已经成为21世纪拓展生态学习系统资源的主要媒介。学习主体的交互发展,促进了资源环境的渗透能力,让学生的学习观念发生了质的改变。基于此,本文将结合苏州工业园区正在构建的生态学习资源系统,深刻剖析生态学习系统对现代教育的启示作用。

关于智能通信工程系统化发展趋势

通信对于国民的生产生活有着非常重要的作用,对于社会的发展也有着重要的意义,所以通信工程也是城市化建设及改造的重要环节。随着信息技术的不断发展以及计算机网络技术的不断普及,智能通信在现代人们的生活中扮演了重要的角色。文章将针对智能通信工程系统化的问题进行相应的分析。

信息时代的数学算法与结构教学法

本项目引入了数学算法与结构教学法,并且论述其内容、功能和优越性。在这种教学法中,教学内容被精心设计成计算机流程图或N-S流程图,用以表达、描述或模拟有关数学定理法则的分析、思路、证明甚至应用等等过程。通过这种教学法,就可以将传统的教学方法论变成逻辑性强的、结构性强的、精确的科学理论。从而,有利于培养学生把数学问题转换成计算机算法流程图、知识结构图的能力及数学建模的能力。因此,数学算法与结构教学法应当作为当今信息时代理科教学方法改革的一种可供选择的、实用性强的模式。

促进创业型人才培养体系建设的思考

面临经济发展新的形式,高校传统人才培养模式受到严峻的考验与挑战,以创业型人才培养为导向的创业教育再一次以新的视角被提出并推动实践。通过全面阐述创业型人才培养目标要素的构成,并结合作者所在学校实施创业教育,培养创业型人才的实践经验为基础,指出创业型人才培养模式的系统化结构,即创业教育组织条件保障、创业教育内容与体系完善、创业实践运作平台构建、校企联合师资队伍打造、创业文化建设支撑。

电子产品结构系统化设计法研究

文章针对电子产品结构系统化设计,从设计特征、设计方法、设计建议三个方面展开论述,并且从确定设计任务、产品原理设计、功能分析、功能元求解、求系统原理解、系统最佳原理解6个方面着手分析设计方法,明确电子产品结构系统化设计方案,谨为今后工业设计数字化设计提供参考。

Simulation and Analysis of Land System Structure Changes in Huang-Huai-Hai Plain Area

The dynamic changes of land system in Huang - Huai - Hai Plain between 1988 and 2000 were researched in this paper. Spatial dominance econometric model was estabilished on 1 km cell to quantificafionally analyze the driving-force for the dynamic change mechanism of land system, such as natural, social and economic factors. The future dynamic changes of land system in Huang - Huai - Hai Plain on each 1 km cell during 2000 to 2020 were stimulated by combining the dynamic changes of land system on each 1 km cell with different situations. The research indicated that the dynamic changes of land system structure changed mainly from the cultivated areas to building areas and industrial areas, and forest areas increased during this period. Although the revolutions of land system structure were different during 2000 to 2020 with the different referrence standard, ecological protection and economic development, the primary dynamic changes of land system structure were that the increase of building land areas with the decline cuhivaled land areas and the increase of woodlands.

Trust Model Based on Structured Protection for High Level Security System

In order to ensure the security of information systems, it's essential to make sure that system behaviors are trusted. By analyzing threats that exist in executing procedures, a trust model based on structured protection is proposed. We consider that functional components, system actions and message flows between components are three key factors of information systems. Structured protection requirements on components, connections and action parameters are also provided. Four trusted properties of the model are deducted through formal analysis, and trusted system behavior is defined based on these properties. Furthermore, decision theorem of trusted system behavior is proved. The developed prototype system indicates the model is practical. It is a general theory model built on logic deduction and independent on specific environment and the behaviors of the system designed and implemented following the model are trusted.

SDSA: A Framework of a Software-Defi ned Security Architecture

The fact that the security facilities within a system are closely coupled and the security facilities between systems are unconnected results in an isolated protection structure for systems, and gives rise to a serious challenge to system security integrations and system controls. Also, the need for diversified services and flexible extensions of network security asks for more considerations and contribu?tions from the perspective of software engineering in the process of designing and constructing security systems. Based on the essence of the virtualization technique and the idea of software-defined networks, we in this paper propose a novel software-defi ned security architecture for systems. By abstracting the traditional security facilities and techniques, the proposed security architecture provides a new, simple, effective, and programmable framework in which security operations and security controls can be decoupled, and thereby reduces the software module sizes, decreases the intensity of software deve?lopments, and improves the security extensibility of systems.

Changes of Mobile Internet Ecosystem Structure and Suggestions for Regulatory Policy

The mobile Intemet industry has exp- erienced dramatic changes as plenty of new applications and business models emerged. This study conducts a qualitative review on the changes through adopting business ecosystem approaches. An analytical framework is estab- lished for reviewing the structure of mobile Internet business ecosystem. Then the core value, key actors, and inter-firm relationships of the mobile Internet ecosystem in the past and in the present are compared. It is found that the ecosystem structure has shifted from an MNO-centric model to a polycentric one with highly expanded value sources and di- versified keystone players. Accordingly some suggestions for regulatory policy makers are provided in terms of the roles of mobile Inter- net in social welfare improvement, the call for a convergent regulatory system, and chal- lenges for information security regulation.

Systematic Method of Applying Structural Characteristics of Natural Organisms to Mechanical Structures

Structural bionic design lacks mature and scientific theories, and the excellent structural characteristics of natural organisms sometimes cannot be transferred into engineering structures effectively. Aiming at overcoming the existing problems, this paper summarizes three related theories: similarity theory, fuzzy evaluation theory and optimization theory. Based on the related theories, a method of structural bionic design is introduced, which includes four steps: selecting the most useful structural characteristic of natural organism; analyzing the structural characteristic finally chosen for engineering problem; completing the structural bionic design for engineering structure; and verifying the structural bionic design. Similarity theory and fuzzy evaluation theory are employed to achieve Step 1. In Step 2 and Step 3, optimization theory is employed to analyze the parameters of structures. Together with the thoughts of simplification and grouping, optimization theory can reveal the relationship between organism structure and engineering structure, providing a way to structural bionic design. A general evaluation criterion is proposed in Step 4, which is feasible to evaluate the performance of different structures. Finally, based on the method, a structural bionic design of thin-walled cylindrical shell is introduced.

Design and Implementation of Visualized Workflow Modeling System Based on B/S Structure

According to the necessity of flexible workflow management system, the solution to set up the visualized workflow modelling system based on B/S structure is put forward, which conforms to the relevant specifications of WfMC and the workflow process definition meta-model. The design for system structure is presented in detail, and the key technologies for system implementation are also introduced. Additionally, an example is illustrated to demonstrate the validity of system.

Structure and Function of the Digestive System of Solen Grandis Dunker

Structure and function of the digestive system of a bivalve mollusc, Solen grandis, were studied using light microscopy and histochemical methods. The wall of digestive tube consists of four layers: the mucosal epithelium, connective tissue, muscular and fibrosa or serosa (only in the portion of rectum) from the inner to the outer. The ciliated columnar epithelial cells, dispersed by cup-shaped mucous cells, rest on a thin base membrane. There are abundant blood spaces in connective tissue layer. The digestive diverticula are composed of multi-branched duct and digestive tubules. The digestive tubules are lined with digestive and basophilic secretory cells, and surrounded by a layer of smooth muscle fibers and connective tissues. Activities of acid and alkaline phosphatases, esterase and lipase are detected in the digestive cells, and the epithelia of stomach and intestine, suggesting that these cells are capable of intracellular digesting of food materials and absorbing.Besides, acid phosphatase and esterase activities are present in the posterior portion of esophagus. Phagocytes are abundant in blood spaces and the lumens of stomach and intestine, containing brown granules derived from the engulfed food materials. The present work indicates that phagocytes play important roles in ingestion and digestion of food materials, which is supported as well by the activities of acid phosphatase, esterase and lipase detected in blood spaces.

HICUS:A QUASI-STRUCTURED P2P SYSTEM BASED ON HIERARCHICAL INTEREST

The key problem in unstructured P2P system is how to control "Flood".Some studies focus on constructing more efficient topology while others focus on better query algorithms.This paper presents HICUS(Hierarchical Interest-driven Community-based Unstructured System) motivated by a basic thought-whether the resources correlate with topology distinguishes structured and unstruc-tured P2P essentially.By introducing hierarchical "interest",HICUS organizes a quasi-structured topology through a pure distributed way,and provides a new platform for query algorithms.We study the procedure and performance of topology organization,and the simulations show that HICUS forms a small-world which can significantly improve the routing efficiency.

深化课程改革中《知识产权法》教材的改革

一本好的教材是提高学习效果的前提条件。在知识产权法学教材编写中,首先,应当进行科学的体例设计,凸显理论结合实际。基本知识掌握与前沿问题了解并重,纵深学习与拓宽知识面并重。其次,在内容上应加大知识产权法总论内容的引入,注重知识产权与民法基本原理的关系,重点分析知识产权的特殊性。最后,是强调教师对教材的运用,引导学生全面掌握知识产权法的内容,形成系统化的知识结构。

Demographic, Economic, and Social Challenges of the Population Ageing in Cameroon

The elderly represent a growing proportion of the overall population and household＇s heads in Cameroon. This demographic change has some impact on the economic and social situation of the latter, in particular, the functioning of the family structure and solidarity between generations. The successive crises （food and financial） coupled with structural adjustment programs have in fact worsened the problems of the elderly, without having for compensation, provided the corresponding benefits for other age groups. This study contributes to the analysis of changes over time in the family support system, especially with regard to household＇s heads aged in Cameroon. To achieve this, the discussion turns around three questions： （1） what is the extent and nature of the ageing in Cameroon？ （2） what are the demographic, economic, and social implications？ and （3） what is the impact of economic and social change on intergenerational relationships？ The data used come from the Population Census （1976, 1987, and 2005）, and the Cameroonian Household Survey of 2007. The gradual deterioration of the support system for the family, especially due to modernization, and the current and future numbers of older should bring more policymakers to meet the specific needs of this group in Cameroon.

Research on Library Management System based on RFID Technology

This paper analyses the demand of intelligent bookshelf system, designed the overall structure of intelligent Library shelves system based on RFID and create the system use case model. The analysis and design of the intelligent bookshelf system structure from two aspects of hardware and software, puts forward the three layer system structure model of intelligent bookshelf system based on RFID technology. The paper provide the analysis method and the design ideas of library intelligent bookshelf system, has the very high application value, contribute to the realization of library intelligent management and improve the level of library services, provide a useful reference to the development of current book positioning system and intelligent goods shelf system solution.

A New Liouville Integrable Hamiltonian System

With the help of a Lie algebra, an isospectral Lax pair is introduced for which a new Liouville integrable hierarchy of evolution equations is generated. Its Hamiltonian structure is also worked out by use of the quadratic-form identity.

Comparison of Two Types of Control Structures for Benzene Chlorine Reactive Distillation Systems

The ＂neat＂ operation of the two-reactant reactive distillation column has Oetter steady-state economics, while It presents a challenge for design, optimization, and control of the process. Based on the optimal economic design, the dual-composition control structure and dual-temperature control structure are designed respectively for the benzene chlorine consecutive reactive distillation process. The effectiveness and robustness are analyzed comparably for the disturbance resistance in terms of changes of production rate and feed composition. Results show that dual-temperature control with propose selection of tray temperatures and the optimal profile of the set point can provide better transient process performance than the composition control structure.