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高等院校分层:一种社会阶层分析的视角

教育发展研究 2010年第1期30卷 28-33页

作者：钟景迅香港中文大学

在以美、英两国为代表的西方学界,学者们通过研究揭示了基于不同社会阶层存在于学生中的不公平现象:来自优势地位阶层的学生更多地聚集在院校系统的上层,而来自弱势地位阶层的学生则更多聚集在院校系统的下层。与美、英两国相比,中国社... 详细信息

在以美、英两国为代表的西方学界,学者们通过研究揭示了基于不同社会阶层存在于学生中的不公平现象:来自优势地位阶层的学生更多地聚集在院校系统的上层,而来自弱势地位阶层的学生则更多聚集在院校系统的下层。与美、英两国相比,中国社会的阶层分类虽有自身的特点,但许多学者的研究也揭示出基于社会阶层存在于学生中的不公平现象也十分明显。这表明,高等院校方层是客观存在的。

关键词：高等教育院校分层社会阶层

Nitrogen Mineralization in Soils Along a Vegetation Chronosequence in hong kong

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Pedosphere 2005年第2期15卷 181-188页

作者： L.M.MARAFA K.C.CHAU Centre for Environmental Policy and Resource Management Centre for Environmental Policy and Resource Management Department of Geography and Resource ManagementThe Chinese University of Hong KongShatinNew TerritoriesHong Kong (China)Department of Geography and Resource ManagementThe Chinese University of Hong KongShatinNew TerritoriesHong Kong (China)

This research examined nitrogen mineralization in the top 10 cm of soils along a vegetation gradient in hong kong at sites where fire has been absent for 0, 1, 3, 6 and 17 years (at the time of the study), and the relationships between N mineralization and successional development of vegetation in the absence of fire. The sites including a newly burnt area (S1), short grassland (S2), tall grassland (S3), mixed tall grassland and shrubland (S4), and woodland (S5) were selected,and the in situ core incubation method was used to estimate nitrogen mineralization. Throughout the 60-day incubation in four periods, more nitrogen was mineralized at the S3 and S4 sites, the predominantly grassland sites, which contained the highest levels of soil organic matter (SOM) and total Kjeldahl nitrogen (TKN), than the S1 site, while immobilization occurred at the S2 and S5 sites. Leaching loss decreased with successional development of the vegetation, in the order of S1 ＞ S2 ＞ S3 ＞ S4 ＞ S5. The pattern of nitrogen uptake with ecological succession was less conspicuous, being complicated by the immediate effect of fire and possibly the ability of the woodland species to extract nitrogen from the deeper *** the absence of fire for 3 to 6 years, the build-up of SOM and TKN was accompanied by active mineralization, thus paving the way for the invasion of shrub and tree species. A close relationship existed between nitrogen mineralization and ecological succession with this vegetation gradient. Inherent mechanisms to preserve nitrogen in a fire-prone environment including immobilization and uptake and the practical relevance of nitrogen mineralization to reforestation are discussed.

关键词： fire impact immobilization nitrogen mineralization successional development vegetation chronosequence

Bony connection to vascular dysfunction and implications on hypertension

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岭南心血管病杂志 2011年第S1期17卷 27-28页

作者： HUANG Yu (Institute of Vascular Medicine,chinese university of hong kong,China)

Bone morphogenic protein 4（BMP4） belongs into the transforming growth factor-β（TGF-β） ***4 was originally discovered to par- ticipate in embryonic development,bone and cartilage ***4 is up-regulated in calcified atherosclerotic plaques and reduces endothelium-de-pendent ***4 can stimulate superoxide production and exert pro-inflammatory effects on the *** underlying mechanisms of how BMP4 mediates endothelial dysfunction and hypertension remain to be *** recent study shows that BMP treatment led to the impaired en-dothelium -dependent relaxations（EDR）,exaggerated endothelium-dependent contractions（EDC） and reactive oxygen species（ROS） generation in mouse aortas,which were reversed by BMP4 antagonist *** inhibition with thromboxane-prostanoid receptor antagonist or cyclooxygenase-2 （COX-2） but not cyclooxygenase-1（COX-1） inhibitor attenuates the BMP4-induced endothelial dysfunction which was further confirmed with the use of COX-1-/- or COX-2-/- *** and knockdown of BMP receptor 1A abolished EDC and COX-2 up-regulation in BMP4-treated mouse aortas. Apocynin and tempol treatment were effective in restoring EDR,preventing EDC,eliminating ROS over-production and COX-2 over-expression in BMP4-treated ***-2 inhibition blocked the effect of BMP4 without affecting BMP4-induced ROS over-production and COX-2 ***, renal arteries from hypertensive rats and humans showed higher levels of COX-2 and BMP4 accompanied by endothelial *** show for the first time that ROS serve as a pathological link between BMP4 stimulation and the downstream COX-2 up-regulation in endothelial cells,leading to endothelial *** BMP4/ROS/COX-2 cascade is important in the maintenance of endothelial dysfunction in hypertension.

关键词： EDC COX EDR Bony connection to vascular dysfunction and implications on hypertension BMP over

An essential role of endothelium-derived nitric oxide in vasorelaxations induced by black tea polyphenols

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An essential role of endothelium-derived nitric oxide in vas...

两岸三地药理学与临床药理学术会议

作者： HUANG Yu (Department of Physiology, chinese university of hong kong, hong kong, China)

Green tea has received much attention as protective agent against cardiovascular disease and can- cer,the two primary targets of preventive *** our first demonstration in 1999 of the involvement of endothelium-derived nitric oxide in the acute vasodilator effect of green tea polyphenols,several new vas- cular protective effects of green tea catechins have been *** are another class of polyphe- nol pigments found in black tea,however,little is known about their bioactivity in the vascular *** have recently demonstrated that black tea and its theaflavins cause relaxations of rat aortas via endothelial nitric oxide-dependent mechanisms and the tea polyphenols are very effective in protecting endothelial func- tion agonist oxidative *** present results support the vascular benefit of consumption of black tea, which is equal to that of drinking green tea in terms of their endothelial cell protection and antioxidant ca- pacity.

关键词： black tea polyphenols endothelial function

Tattle the Therapeutic Relationship in Contemporary Family Therapy:The Disintegration of Authority-A change in the Treatment Paradigm

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Tattle the Therapeutic Relationship in Contemporary Family T...

第四届泛亚太地区心理卫生学术研讨会

作者： Yu Zhihong Ma Lizhuang chinese university of hong kong

＜正＞In chinese traditional culture, authority is the symbol of wisdom, power, and social acknowledge, which also could be seen as a kind of capital belonging to some resources owners who are adored entirely by those resource demanders. It is the adore authority in tradition that has been quite throughout various situations in the treatment in contemporary china, including psychotherapy. However, with the continual development of the western postmodernism thought, the traditional authority of psychotherapists has been threatened. Some new relationship such as equal and interact in the treatment has attracted more attention, especially in the family therapy. The traditional treatment

关键词： new therapeutic relationship treatment paradigm changing treatment visual angle therapeutic approach the role of therapist

Nature of Coordination Contracts for Supply Chain Management:Structural Results and Classifications

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Nature of Coordination Contracts for Supply Chain Management...

中国运筹学会成立三十周年庆祝大会暨2010年全国学术交流年会

作者： Houmin Yan~1 1 the chinese university of hong kong

Supply chain coordination and its associated coordination contracts have been an active research area for supply chain management ***,little has been done on addressing matters of design,evaluation,and implementation for these coordination *** this paper, based on the group decision-making and game theory,we define a framework for supply chain contracts and classify a number of well-studied contracts into *** demonstrate,with examples,that coordination contracts can be measured by properties of the path-dependency,the sequence of decision-making, and the reliance on side *** precise mathematical definitions,and subsequently developed structural properties and management insight,not only are we able to measure the goodness of supply contracts but also to reveal the nature of the supply ***,with one dimension measure coordination contracts in a sense of weak,ordinary,and strong,and the second dimension measures coordination contracts in terms of decision sequence of dependency,independency, and voluntary compliance,we classify coordination contracts existing in the literature into a three by three matrix.

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A DECISION THEORY APPROACH TO VARIABLE SAMPLING PLANS

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Science in China,Ser.A 1988年第2期 129-140页

作者：林埜 Department of Statistica the chinese university of hong kong Shatin N.T.

In this paper, we consider the variable sampling plans based on Bayesian decision theory with quadratic loss function. We develop a model and derive an explicit expression for the Bayes risk. By estimating the upper b... 详细信息

关键词： A DECISION THEORY APPROACH TO VARIABLE SAMPLING PLANS 一夕

Synchronization of Chua's Circuit and Van der Pol Oscillator via Internal Model Approach

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Synchronization of Chua's Circuit and Van der Pol Oscillator...

第二十七届中国控制会议

作者： Zhao Jin,Huang Jie Mechanical and Automation,the chinese university of hong kong,hong kong

This paper considers the output synchronization of the Chua’s circuit and the Van der Pol *** first reformulate the problem as a robust output regulation problem with the Chua’s circuit as the plant and the Van del Pol system as the exosystem and then solve the robust output regulation problem via internal model *** of the approach will be evaluated by computer simulation.

关键词： Synchronization Nonlinear systems Output regulation Internal model

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电子投票系统的安全问题(英文)

计算机工程 1999年第S1期25卷 61-64页

作者： Cheng Chunhung Cheng Waiman Wong Kamfai(the chinese university of hong kong,Shatin,NT,hong kong,PRC)

已有几种电子投票系统被提出以取代现有利用电话、信函等工作的投票系统。然而，许多电子投票系统或是完全或是部分地忽略了电子投票的安全问题。这已经阻碍了对电子投票的普遍接受和信任。讨论并指出了产生于电子投票中的不同安全问题... 详细信息

已有几种电子投票系统被提出以取代现有利用电话、信函等工作的投票系统。然而，许多电子投票系统或是完全或是部分地忽略了电子投票的安全问题。这已经阻碍了对电子投票的普遍接受和信任。讨论并指出了产生于电子投票中的不同安全问题。文章的工作是一次理解电子投票系统风险的尝试，而这种尝试对定义防止欺骗与滥用的安全措施是极为重要的。最后描述了一种原型系统。

关键词：电子投票电子投票系统安全