基于Packet Tracer仿真技术构建网络互连技术实验平台

通过具体的实验对Packet Tracer软件进行了仿真技术测试分析,并在网络互连真实环境上进行了对比实验验证。实现了Telnet、VLAN、STP、RIP、OSPF、PPP、Frame Relay、NAT、ACL、WAN、VPN、DHCP、HTTP、DNS、Emai等网络互连和仿真通信实验。基于Packet Tracer的仿真技术,构建具有开放式的网络互连技术实验平台,改善了实践环境、扩展了实践手段、优化了实践过程、提高了实验效率,较好的解决了学生一旦离开了实验室环境将变得束手无策的问题,学生将有更多的机会去参与实验学习和实践体验,激发了学生自主学习的积极性。同时,节约了实验室的实验成本,降低了实验室的管理难度。     

泛系思维与应用：科学技术,方法论,创新与智能信息处理（Ⅱ）（上）

本文续前论述乏系思维的框架和方法论、创新运筹与智能信息处理问题,简化强化地介绍了几十种泛系理法及其应用,具体内容包括：泛系思维简式、泛系原则、泛系螺旋、显生原则、系统原则、广义系统、局整关系、分析与综合、整体性、结构与功能、遗憾原则、竞分三故、等价原则、竞标律、层标模型、简化５０计、转化原则、泛系数学建模总体转化模式、泛对称普适原则、广义量化、泛积原理、模糊控制、故障诊断的专家系统、数学建模三范畴     

泛系资源泛通论：交通·通信·金融·数学--计算机·网络·智能·科技史新论识

广义资源广义的由此及彼界定的泛系资源泛通,形成泛系论的一大理法,它是一种世界观、认识论、方法论、价值论和运筹学,毗连于数理工医文社史哲百科千题万技理法,特别是对广义的交通、通信、金融、物流、推理、智能、计算机、网络、数理科学和科技思想的发展可以得到一种全新的阐述,甚至对政治、大国兴衰、经济、军事、教育、社会学、医药学、科学技术工程哲学等等都可以导致新的感悟。在泛系框架下发展泛系资源泛通论,一种广义的资源论和交通学,探索交通、物流、通信、金融、生理、心理、医理、生命、生态、文明、历史、计算机、网络、智能、数学等等百科千题万技理法统驭或归寓于泛系泛通的机制,具体建构包括：（1）百家论识：跨学科研究与泛系泛通——孔子,莎士比亚,恩格斯,钱学森,阿蒂亚等;（2）泛系指略：形而泛学;（3）泛系醅法精缩影;（4）数理模型：泛系资源与泛通;（5）泛系史学：科技思想发展泛通论;（6）泛系生物学：水·文明·生理·心理·医理·生态;（7）泛系交通学：交通·建筑·城市·金融·航天;（8）泛系泛通论：运转与模拟,通信·IT·信息论·控制论;（9）泛系泛通论：计算机·网络·人工智能·C^4ISR;（10）泛系数学：泛通和智能。     

泛系思维与应用:科学技术、方法论、创新与智能信息处理(Ⅰ)

本研究系列用新的形式论述泛系思维,并且从泛系观来阐述科学技术的一些特点、机制与理法以及与科学技术有关的一些历史、时代、方法论、哲学、宗教、教育与未来发展的问题,同时具体研究创作、创造、创新、创意与智能信息处理的技理,憾息运筹与博才运筹的方法,介绍举一反万的泛系悟术以及现代国际学术界关注的粗集理论的泛系显生。     

MAES系列通用专家系统的结构及使用方法

叙述一种国内自主开发的专家系统开发工具 ,可以替代进口的专家系统。它可以应用于工业、农业、军事、医疗、交通、旅游、环保、气象、航天等领域 ,实现诊断、计划、设计、咨询、管理、市场预测、投标等     

Etch rates for micromachining processing-Part II

Samples of 53 materials that are used or potentially can be used or in the fabrication of microelectromechanical systems and integrated circuits were prepared: single-crystal silicon with two doping levels, polycrystalline silicon with two doping levels, polycrystalline germanium, polycrystalline SiGe, graphite, fused quartz, Pyrex 7740, nine other preparations of silicon dioxide, four preparations of silicon nitride, sapphire, two preparations of aluminum oxide, aluminum, Al/2%Si, titanium, vanadium, niobium, two preparations of tantalum, two preparations of chromium, Cr on Au, molybdenum, tungsten, nickel, palladium, platinum, copper, silver, gold, 10 Ti/90 W, 80 Ni/20 Cr, TiN, four types of photoresist, resist pen, Parylene-C, and spin-on polyimide. Selected samples were etched in 35 different etches: isotropic silicon etchant, potassium hydroxide, 10:1 HF, 5:1 BHF, Pad Etch 4, hot phosphoric acid, Aluminum Etchant Type A, titanium wet etchant, CR-7 chromium etchant, CR-14 chromium etchant, molybdenum etchant, warm hydrogen peroxide, Copper Etchant Type CE-200, Copper Etchant APS 100, dilute aqua regia, AU-5 gold etchant, Nichrome Etchant TFN, hot sulfuric+phosphoric acids, Piranha, Microstrip 2001, acetone, methanol, isopropanol, xenon difluoride, HF+H/sub 2/O vapor, oxygen plasma, two deep reactive ion etch recipes with two different types of wafer clamping, SF/sub 6/ plasma, SF/sub 6/+O/sub 2/ plasma, CF/sub 4/ plasma, CF/sub 4/+O/sub 2/ plasma, and argon ion milling. The etch rates of 620 combinations of these were measured. The etch rates of thermal oxide in different dilutions of HF and BHF are also reported. Sample preparation and information about the etches is given.     

Models: the fourth dimension of computer science

Models are a universal instrument in science, technology, and daily life. They function as instruments in almost every scenario. Any human activity can be (and is) supported by models, e.g. reason, explain, design, act, predict, explore, communicate, collaborate, interact, orient, direct, guide, socialises, perceive, reflect, develop, making sense, teach, learn, imagine, etc. This universal suitability is also the basis for a wide use of models and modelling in Computer Science and Engineering. We claim that models form the fourth dimension in Computer Science. This paper sketches and systematises the main ingredients of the study model and modelling.

     

基于SBT全结点存储的云数据完整性

云存储可以为用户提供高质量、按需分配的数据存储服务,使用户用低廉的价格就能享受到海量的存储能力,但是对于用户而言,云存储服务器并不是完全可信,因此会担心存储在云端的数据出现安全性问题,同时为了满足云中的应用,需要完整性验证机制支持全动态操作以及第三方公开认证。因此,提出一种基于全结点存储的云数据完整性方案。引入平衡二叉搜索树结构--结点大小平衡树(SizeBalancedTree,SBT),该结构使得树中所有的结点都可以用来存储实际的数据,相比叶子结点存储的树,无疑减少了服务器上的空间开销,同时降低了树的高度,从而也降低了进行数据插入删除等基本操作的时间复杂度。该方案在支持动态操作上具有更好的效率,能够很好地支持云存储环境下数据完整性验证。     

Integration | Innovation | Inclusion: Values,Variables and the Design of Human Environments

Complexity, complication, contradiction, consumption, confusion, delusion, depression. Opportunity, inspiration, ingenuity, compassion, wisdom. Our world is perplexing, our times are fast moving, and our choices are many. To find an appropriate path is a daunting yet vital challenge that confronts us as individuals, as communities, and as a civilization. How sustainable is our world? How reasonable are our behaviors? The present article is a collection of thoughts on a series of intertwined issues related to the contemporary world, its environmental dimensions, and their present-day problems. The goal is to survey the landscape through a lens of Environmental Design, to provide some perspectives, to raise some questions, and to explore systems, beliefs, and values informing and influencing actions. It is important to consider how people's belief systems influence, inform, and shape actions. This holds true in realms political, spiritual, and cultural. It also proves relevant in the ways in which we imagine, design, develop, and construct our buildings, cities, spaces, and places.

Appropriate solutions to some of our most daunting problems will arise through the concerted efforts, open dialogue, and collective wisdom of the wide array of stakeholders, professionals, politicians, decision makers, and citizens (both engaged and disenfranchised) who have the will and wherewithal to make a difference and to make the world safer, healthier, and better. It seems vital for us to critically examine, and question, our belief systems and their connections to the ways we define, refine, and realize progress. Architecture and Environmental Design, in both a philosophical and a practical sense, reflect as well as form greater aspirations, directions, and events of our times.     

致力于“防患于未然”的仿真

自然灾害、飞机失事、车祸、沉船、矿难、大范围停电、网络病毒入侵、瘟疫流行、食物中毒、看病碰到误诊、安全事故等,诸如此类的意外事故,数不胜数,迫切需要防患于未然。目前,地震预报尚属于世界性难题,其它绝大部分,通过仿真研究都可以找到防患于未然的办法。由于篇幅限制,不能一一详述,只能择其主要者加以论述,诸如矿难预警、对来往车辆进行监视、飞机防碰撞、电网安全、网络安全风险评估、故障诊断、预警雷达、防火、滑坡计算智能仿真系统、传染病传播数学模型、降低误诊率等项目,均是著名的仿真硕果。诸如此类的仿真硕果无不反复表明,致力于"防患于未然"的仿真,日益得到广泛关注。     

构建安全的局域网策略

网络安全是一门涉及计算机科学、网络技术、密码技术、信息安全技术、应用数学、教论、信论等多种学科的综合性学科,它涉及的因素主要包括物理安全、系统安全、信息安全和文化安全等范围。局域网络中人为的、非人为的,有意的、无意的;非法用户入侵、计算机病毒、黑客的不断侵袭等随时威胁局域网的安全。随着计算机网络技术迅速发展,网络安全问题也日渐突出。该文分析了威胁局域网安全的主要因素,探讨了从物理环境、网络层、应用层以及管理制度方面,运用VPN、NAT、VLAN、IDS、身份验证等技术构建安全局域网的策略。     

Facebook,Web 2.0 und ökonomische Überwachung

Social Networking Seiten (SNS) sind Internetplattformen, die es den NutzerInnen erm?glichen, Kontakte herzustellen und aufrechtzuerhalten und Features enthalten wie Kontaktlisten, Webmail, Upload von Fotos und Videos, G?stebücher, Forumsdiskussionen, Fan- und Hobbygruppen, Blogs, usw. Beispiele für SNS sind: Facebook, MySpace, studiVZ, SchülerVZ, MeinVZ, LinkedIn, Xing, Orkut, Lokalisten, Classmates, StayFriends, Vkontakte, Wer-kennt-wen, Mixi, Netlog, Hyves, Bebo oder Friendster. Finanziert werden viele SNS durch personalisierte Werbung. Dazu ist eine Speicherung und Auswertung pers?nlicher Daten und des Nutzungsverhaltens der User notwendig. Dies hat Implikationen für Privatsph?re und Datenschutz.     

Antileishmanial phytochemical phenolics: Molecular docking to potential protein targets

A molecular docking analysis has been carried out to examine potential Leishmania protein targets of antiprotozoal plant-derived polyphenolic compounds. A total of 352 phenolic phytochemicals, including 10 aurones, six cannabinoids, 34 chalcones, 20 chromenes, 52 coumarins, 92 flavonoids, 41 isoflavonoids, 52 lignans, 25 quinones, eight stilbenoids, nine xanthones, and three miscellaneous phenolic compounds, were used in the virtual screening study using 24 Leishmania enzymes (52 different protein structures from the Protein Data Bank). Noteworthy protein targets were Leishmania dihydroorotate dehydrogenase, N-myristoyl transferase, phosphodiesterase B1, pteridine reductase, methionyl-tRNA synthetase, tyrosyl-tRNA synthetase, uridine diphosphate-glucose pyrophosphorylase, nicotinamidase, and glycerol-3-phosphate dehydrogenase. Based on in-silico analysis of antiparasitic polyphenolics in this study, two aurones, one chalcone, five coumarins, six flavonoids, one isoflavonoid, three lignans, and one stilbenoid, can be considered to be promising drug leads worthy of further investigation.     

广义人工生命的科学基础(I):工程技术基础

根据广义人工生命研究的特点,作者把系统论、控制论、信息论、人工智能、元胞自动机、L-系统、遗传算法、进化策略、进化规划、耗散结构理论、协同学、突变论、混沌、分形、转基因技术、克隆技术等的研究成果视为人工生命研究的主要科学基础。文章力求对元胞自动机、L-系统、遗传算法、进化策略、进化规划、耗散结构理论、协同学、突变论、混沌、分形和它们与人工生命的关系做系统而扼要的评述,为人工生命研究提供方便。     

随机配置网络研究进展

随机配置网络(stochastic configuration network, SCN)是一种新兴的增量式神经网络模型,与其他随机化神经网络方法不同,它能够通过监督机制进行隐含层节点参数配置,保证了模型的快速收敛性能.因其具有学习效率高、人为干预程度低和泛化能力强等优点,自2017年提出以来, SCN吸引了大量国内外学者的研究兴趣,得到了快速的推广和发展.从SCN的基础理论、典型算法变体、应用领域以及未来研究方向等方面切入,全面地概述SCN研究进展.首先,从理论的角度分析SCN的算法原理、通用逼近性能及其优点;其次,重点研究深度SCN、二维SCN、鲁棒SCN、集成SCN、分布式并行SCN、正则化SCN等典型变体;随后介绍SCN在硬件实现、计算机视觉、医学数据分析、故障检测与诊断、系统建模预测等不同领域的应用进展;最后指出SCN在卷积神经网络架构、半监督学习、无监督学习、多视图学习、模糊神经网络、循环神经网络等研究方向的发展潜力.     

泛系变分运筹和应用

泛系论是按照四计八筹框架发展起来的一种网络型的研究,是一种新型的系统论、联系论、转化论、微积分、对称论、相对论和方法论,也是哲学和非哲学、还原论和整体论、东方哲理和西方科技的辩证结合。本文重点是泛系理性与四计八筹及其应用,特别是对泛系变分运筹的核心“真善二谛”——“阴阳泛导运泛极,大善遗憾巧显生”进行介绍。有关研究涉及：系统工程原理,综合集成结合法,管理,经济学,领管才人再现法,泛系类缘运筹,教育学,方法论,运筹学,计算机与信息科技,泛系社会智能体,人工智能,泛系本体论,泛系相对论和情景设计,中国阴阳分析与辩证法、极值分析、微积分、变分原理和运筹学的结合,泛系语言变分原理,泛系泛环变分原理,泛系相对变分原理,泛系变分方法,泛系交响,泛导和泛极的递归定义,非线性分析与非线性科学,泛系边际哲学及其数学原理,悖论和辩证法研究,泛系大多大理法,泛系结合法,泛系实践法,成本运筹,等等。     

New Methodologies for Parallel Architecture

Moore's law continues to grant computer architects ever more transistors in the foreseeable future, and parallelism is the key to continued performance scaling in modern microprocessors. In this paper, the achievements in our research project, which is supported by the National Basic Research 973 Program of China, on parallel architecture, are systematically presented. The innovative approaches and techniques to solve the significant problems in parallel architecture design are summarized, including architecture level optimization, compiler and language-supported technologies, reliability, power-performance efficient design, test and verification challenges, and platform building. Two prototype chips, a multi-heavy-core Godson-3 and a many-light-core Godson-T, are described to demonstrate the highly scalable and reconfigurable parallel architecture designs. We also present some of our achievements appearing in ISCA, MICRO, ISSCC, HPCA, PLDI, PACT, IJCAI, Hot Chips, DATE, IEEE Trans. VLSI, IEEE Micro, IEEE Trans. Computers, etc.     

泛系思维与应用：科学技术,方法论,创新与智能信息处理（Ⅱ）（下）

本文续前期论述泛系思维的框架和方法论、创新运筹与智能信息处理问题,简化强化地介绍了几十种泛系理法及其应用,具体内容包括：泛系思维简式、泛系原则、泛系螺旋、显生原则、系统原则,广义系统、局整关系、分析与综合、整体性、结构与功能、遗憾原则、况分三故、等价原则、竞标律、层标模型、简休５０计、转化原则、泛系数学建模总体转化模式、泛对称普适原则、广义量化、泛积原理、模糊控制、故障诊断的专家系统、数学建模三范     

Parallelism in object-oriented languages: a survey

Fourteen concurrent object-oriented languages are compared in terms of how they deal with communication, synchronization, process management, inheritance, and implementation trade-offs. The ways in which they divide responsibility between the programmer, the compiler, and the operating system are also investigated. It is found that current object-oriented languages that have concurrency features are often compromised in important areas, including inheritance capability, efficiency, ease of use, and degree of parallel activity. Frequently, this is because the concurrency features were added after the language was designed. The languages discussed are Actors, Abd/1, Abd/R, Argus, COOL, Concurrent Smalltalk, Eiffel, Emerald, ES-Kit C++, Hybrid, Nexus, Parmacs, POOL-T, and Presto