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Communications in Theoretical Physics 2013年第12期60卷 691-694页

作者： ch’ng Han Siong Shahidan Radiman School of Applied Physics Faculty of Science and Technology Universiti Kebangsaan Malaysia

The Einstein＇s genera/relativity is formulated in the Hamiltonian form for a spatia/ly Bat, isotropic and homogeneous universe. Subsequently, we perform the canonical quantization procedure to the Hamiltonian to obtain the Wheeler-DeWitt equation. Solving the Wheeler-DeWitt equation and employing the de Broglie-Bohm interpretation to the wave function of the universe, we obtain a new version of spatia/ly fiat Friedmann equation for the early universe where the scale factor of the universe is taken to be sufilcientlv small.

关键词： de Broglie-Bohm interpretation canonical quantum cosmology Friedmann equation Wheeler-DeWitt equation

RATIONAL GENERAL SOLUTIONS OF HIGHER ORDER ALGEBRAIC ODES

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Journal of Systems Science & Complexity 2013年第2期26卷 261-280页

作者： HUAng Yanli ng L X chu WINKLER Franz School of Computer Science and Software Engineering Tianjin Polytechnic University Research Institute for Symbolic Computation(RISC) Johannes Kepler University Department of Mathematics Quy Nhon University

This paper generalizes the method of ng6 and Winkler （2010, 2011） for finding rational general solutions of a first order non-autonomous algebraic ordinary differential equation （AODE） to the case of a higher order AODE, provided a proper parametrization of its solution hypersurface. The authors reduce the problem of finding the rational general solution of a higher order AODE to finding the rational general solution of an associated system. The rational general solutions of the original AODE and its associated system are in computable 1-1 correspondence. The authors give necessary and sufficient conditions for the associated system to have a rational solution based on proper reparametrization of invariant algebraic space curves. The authors also relate invariant space curves to first integrals and characterize rationally solvable systems by rational first integrals.

关键词： Algebraic ODE associated system invariant algebraic space curve rational first integral rational general solution.

Designing a practical ATM Campus Network

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High Technology Letters 1995年第1期1卷 61-65页

作者： Bin, L. Yong, zh. Shiduan, ch. Yan, M. Beijing Univ of Posts and Telecommunications Beijing China

A typical distributed ATM campus network——BUPT(Beijing University of Posts andTelecommunications)ATM Campus Network is presented in this *** network iscomposed of several small ATM switches in a distributed manner and will be connected tothe china Education and Research Network(CERNET).First,an architecture of BUPTATM Campus Network is *** the interworking and protocol conversion be-tween ATM network and existing 802.X LAN are ***,some of the typicalbroadband applications such as multimedia communications,virtual workgroups,remotevideo-teaching and LAN emulation are described.

关键词： ATM Campus network LAN CERNET Broadband services

Studies on Thermal Conductivity of Diamond Film

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High Technology Letters 1995年第1期1卷 91-94页

作者： Jingbiao, C. Hong, ch. Jifa, zh. Dayan, B. Rongchuan, F. Univ of Science and Technology of China Hefei China

Diamond films were prepared by electron-assisted chemical vapor deposition (EACVD) system, and the thermal diffusivities of the films with or without substrate were studied by use of photothermal deflection (PTD) technique. The results show that less non-diamond component and larger crystalline size result in higher thermal conductivity of CVD diamond film. The influence of substrate on the measurement of thermal conductivity of the film was investigated, and a simple two-layer heat conduction model is given to account for the influence and used to draw the thermal conductivity of the film from the effective thermal diffusivity of film/substrate system.

关键词： Diamond film Photothermal deflection Thermal conductivity Substrate

Embolization of brain arteriovenous malformations with squid co-polymer embolic material:Initial experience

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Journal of Interventional Medicine 2023年第4期6卷 175-178页

作者： Li Shyan ch'ng Zulkifli Zaki Ahmad Sobri Muda Radiology Department Faculty of Medicine UiTMSungai BulohMalaysia Radiology Department Hospital Sungai BulohSungai BulohMalaysia Radiology Department HSAASFaculty of Medicine and Health SciencesUniversiti Putra MalaysiaMalaysia Radiology Department Faculty of Medicine UiTM Sungai Buloh47000Malaysia

Objective:To analyze the safety and effectiveness of the ethylene-vinyl alcohol copolymer(EVOH)liquid embolic agent Squid(Emboflu,Switzerland)for the treatment of brain arteriovenous *** and procedures:Between April 2015 and July 2017,46 embolization treatments for brain arteriovenous malformations(BAVM)were performed in 25 patients using two Squid formulations(18 and 12).Six female and 19 male patients with a mean age of 34 years(range,9–62 years)were included.A total of 46 procedures were *** BAVMs were classified as Spetzler-Martin gradeⅡin 4 procedures,Ⅲin 27 procedures,and 1V in 15 *** the 25 patients,15 presented with hemorrhage,5 with seizures,and 5 with headache and *** BAVMs were located in the temporal lobe in 5 patients,parietal lobe in 7 patients,frontal lobe in 3 patients,posterior fossa in 6 patients,basal ganglia in 3 patients,and parasagittal lobe in 1 ***:The obliteration rate of the BAVMs ranged from 10%to 100%,with a mean of 33%.Most patients underwent their first or second embolization *** patients(8%)developed intracranial bleeding post procedure,with one death(2%).One patient(2%)experienced a seizure during the procedure;however,no intracranial bleeding was *** patients(15%)experienced perforations during catheter *** case(2%)of fractured catheter was recorded,but no significant complications were *** average volume of copolymer injected was 0.6 ml per *** procedures used the Squid-12 formulation,29 procedures used the Squid-18 formulation,and 3 procedures used a combination of Squid-12 and-18 ***:Squid is a safe and effective embolic agent for treating BAVMs.

关键词： Brain arteriovenous malformation Embolization Ethylene vinyl alcohol copolymer SQUID

Local Interactions and the Emergence of a Twitter Small-World Network

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Social Networking 2015年第2期4卷 33-40页

作者： Eugene ch’ng School of Computer Science Big Data and Visual Analytics Lab University of Nottingham Ningbo China Ningbo China

The small-world phenomenon is found in many self-organising systems. Systems configured in small-world networks spread information more easily than in random or regular lattice-type networks. Whilst it is a known fact that small-world networks have short average path length and high clustering coefficient in self-organising systems, the ego centralities that maintain the cohesiveness of small-world network have not been formally defined. Here we show that instantaneous events such as the release of news items via Twitter, coupled with active community arguments related to the news item form a particular type of small-world network. Analysis of the centralities in the network reveals that community arguments maintain the small-world network whilst ac-tively maintaining the cohesiveness and boundary of the group. The results demonstrate how an active Twitter community unconsciously forms a small-world network whilst interacting locally with a bordering community. Over time, such local interactions brought about the global emergence of the small-world network, connecting media channels with human activities. Understanding the small-world phenomenon in relation to online social or civic movement is important, as evident in the spate of online activists that tipped the power of governments for the better or worst in recent times. The support, or removal of high centrality nodes in such networks has important ramifications in the self-expression of society and civic discourses. The presentation in this article anticipates further exploration of man-made self-organising systems where a larger cluster of adhoc and active community maintains the overall cohesiveness of the network.

关键词： Social Network Analysis Social Movement Community #Freejahar Small-World Networks

‘Whole-molecule Disorder’ Refinement of 4-(4-Hydroxybenzylideneiminio)phenol Hemichloride Hemihydroxide

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chinese Journal of Structural chemistry 2011年第9期30卷 1283-1285页

作者： ng Seik Weng Department of chemistry University of Malaya

The two independent cations of the salt, [HO-C6H4-ch=NH-C6H4-OH]·1/2OH·1/2Cl, are both disordered about an axis connecting the two oxygen atoms at the para-positions of the aromatic rings, the disorder being in a 83：17 ratio in one cation and 91：9 in the other. The hydroxide and chloride anions are ordered. The treatment of the nearly ‘whole-molecule disorder’ by employing a small number of restraints is described. Crystal data： C13H12.5Cl0.5NO2.5, triclinic, P , a = 9.1731（4）, b = 9.2048（4）, c = 15.9144（7） , α = 104.822（1）, β = 90.077（1）, γ = 118.641（1）o and V = 1127.86（9） 3 at –173 K.

关键词： whole-molecule disorder

chemical constituents and pharmacological effects of durian shells in ASEAN countries:A review

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chinese Herbal Medicines 2021年第4期13卷 461-471页

作者： Yuan-fei zhan Xiao-tao Hou Li-li Fan zh.ng-cai Du Soo Ee ch'ng Siok Meng ng Khamphanh Thepkaysone Er-wei Hao Jia-gang Deng Faculty of Pharmacy Guangxi University of Chinese MedicineNanning 530200China Guangxi Key Laboratory of Efficacy Study on chinese Materia Medica Guangxi University of Chinese MedicineNanning 530001China Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues Guangxi University of Chinese MedicineNanning 530200China china-ASEAN Joint Laboratory for International Cooperation in Traditional Medicine Research Guangxi University of Chinese MedicineNanning 530200China Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases Guangxi University of Chinese MedicineNanning530001China CAIQ Test Innovation(Malaysia)Service Center Selangor 40150Malaysia Bio-Axis Healthcare Limited Hong Kong 999077China Institute of Traditional Medicine VientianeLao PDR

Durio zibethnus is mainly distributed in Southeast *** chinese medicine believes that durian shells have the effects of clearing heat and purging fire,nourishing yin and moisturizing ***,it is often used as a pharmaceutic food in the chinese folk to assist treating *** present,the chemical constituents isolated from durian shell include phenolic acids,phenolic glycosides,flavonoids,coumarins,triterpenes,simple glycosides and other *** pharmacological studies show that durian shell has many pharmacological activities,such as antioxidant,antiinflammatory,regulation of glucose and lipid *** chemical composition and pharmacological effects of durian shells are summarized in order to provide references for the further research and application of durian shell.

关键词： agricultural residues chemical constituents durian shell Durio zibethnus Murr. pharmacological effects

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广东医疗消费存在的问题及应对措施

消费经济 2005年第6期21卷 47-50页

作者：向常清江门市委党校经济教研室广东江门529000

医疗消费是一种特殊的消费,近年来广大民众对看病贵、看不起病等问题的诉求强烈,形成这些问题主要是政府对公共医疗的投入不足,医疗资源的分配不公,医院追求利润,医疗服务存在乱收费,公立医疗机构效率低,医疗改革存在偏差所造成的,要从... 详细信息

医疗消费是一种特殊的消费,近年来广大民众对看病贵、看不起病等问题的诉求强烈,形成这些问题主要是政府对公共医疗的投入不足,医疗资源的分配不公,医院追求利润,医疗服务存在乱收费,公立医疗机构效率低,医疗改革存在偏差所造成的,要从根本上抑制药价虚高,解决“看病贵”的难题,必须加大政府对卫生的投入,积极推进医疗体制改革,医疗机构要分类管理,营利性医疗机构要市场化,政府应该加大医疗保障的力度,加大对虚假违法医疗广告的打击力度。

关键词：医疗消费医疗广告医疗服务医疗机构

面向小型服务器拒绝服务攻击的轻量级入侵检测系统

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面向小型服务器拒绝服务攻击的轻量级入侵检测系统

作者： MAI ng（？）C ch（A|^）U 华中科技大学

学位级别：硕士

随着硬件价格的下降和网络服务的发展，小型服务器和经验不足的用户在快速的增加。因此，越来越多的轻量级安全软件专注于这个方向。虽然拒绝服务攻击已经被明确的定义，分类和分析，但是如何防范他们还存在着许多的问题。绝大多数的拒... 详细信息

随着硬件价格的下降和网络服务的发展，小型服务器和经验不足的用户在快速的增加。因此，越来越多的轻量级安全软件专注于这个方向。虽然拒绝服务攻击已经被明确的定义，分类和分析，但是如何防范他们还存在着许多的问题。绝大多数的拒绝服务攻击都被因特网服务提供商防范了（阻止了），但是还是每天还是有很多拒绝服务攻击发生。虽然他们被视为小的攻击，轻易的穿透了因特网服务提供商的防范，但是他们可能会造成小型服务器的崩溃。因此，专注于建立一个小型轻量的程序通过分析流量包来识别DoS攻击。通过基于主机入侵检测机制技术和BLINC概念相结合，收集并建立了基于协议的几个Graphlet识别关系图，然后，设计并实现了一个基于网络的入侵检测微型系统。在网络上，该项目可以基于网络或者基于主机IDS模式工作。区别于采用使用规则和事先定义特征码方法的大多数IDS，流量包可以分析攻击模式。这个轻量级检测系统不需要获取包载荷，端口号和其他的附加信息。这将使得CPU和内存的使用率在相当程度上下降。除此之外，图形界面和对多平台的高适应性能够使得非熟练用户能够容易使用。

关键词：拒绝服务轻量级入侵检测系统 Graphlet BLINC概念