可展面的实现方法与应用

为解决工程实际中按照已知条件构造可展面的问题,以微分几何学中单参数平面族包络理论为基础,提出了实现可展面的包络方法,即利用单参数平面族的包络来获得可展面,据此发展出按照已知可展面上一条曲线及可展面在该曲线上的法线构造可展面的方法.研究表明,该方法在按照已知条件设计可展的工程曲面方面具有创新性,操作简便,易于被工程所接受,将该方法应用于工程实际,解决了螺旋输送器的核心部件———铰龙的设计问题,使其在平面上的展开成为可能.

A scalable topology aggregation algorithm for QoS routing in hierarchical networks

Topology aggregation is necessary for scalable QoS routing mechanisms. Thekey issue is how to gain good performance while summarizing the topological information. In thispaper, we propose a new method to describe the logical link, which is simple and effective innetwork with additive and constrained concave parameters. We extend the method to network associatedwith multi-parameters. Furthermore, we propose a modified star aggregation algorithm. Simulationsare used to evaluate the performance. The results show that our algorithm is relatively good.

A Dormant Multi-Controller Model for Software Defined Networking

In order to improve the scalability and reliability of Software Defined Networking(SDN),many studies use multiple controllers to constitute logically centralized control plane to provide load balancing and fail over.In this paper,we develop a flexible dormant multi-controller model based on the centralized multi-controller architecture.The dormant multi-controller model allows part of controllers to enter the dormant state under light traffic condition for saving system cost.Meanwhile,through queueing analysis,various performance measures of the system can be obtained.Moreover,we analyze the real traffic of China Education Network and use the results as the parameters of computer simulation and verify the effects of parameters on the system characteristics.Finally,a total expected cost function is established,and genetic algorithm is employed to find the optimal values of various parameters to minimize system cost for the deployment decision making.

A New Approach to Extensible Continuum Robot Control Using the Sliding-Mode

In this paper, the authors present a new control strategy for continuous backbone （continuum） ＂trunk and tentacle＂ robots. Control of this emerging new class of robots has proved difficult due to the inherent complexity of their dynamics. Using a recently established full dynamic model, the authors introduce a new nonlinear model-based control strategy for continuum robots. The approach is applicable to continuum robots which can extend/contract as well as bend throughout their structure. Results are illustrated using the mathematical model of a three-section, six-degree of freedom planar continuum robot.

An Accurate and Extensible Machine Learning Classifier for Flow-Level Traffic Classification

Machine Learning(ML) techniques have been widely applied in recent traffic classification.However, the problems of both discriminator bias and class imbalance decrease the accuracies of ML based traffic classifier. In this paper, we propose an accurate and extensible traffic classifier. Specifically, to address the discriminator bias issue, our classifier is built by making an optimal cascade of binary sub-classifiers, where each binary sub-classifier is trained independently with the discriminators used for identifying application specific traffic. Moreover, to balance a training dataset,we apply SMOTE algorithm in generating artificial training samples for minority classes.We evaluate our classifier on two datasets collected from different network border routers.Compared with the previous multi-class traffic classifiers built in one-time training process,our classifier achieves much higher F-Measure and AUC for each application.

Women Empowerment in the Arab Region： Between the Anvil of Illiteracy and the Hammer of Passive Representative Bureaucracy

This paper emphasizes on enacting comprehensive mainstreaming institutional mechanisms to promote the role of women in socio-economic development in the Arab region. Sustainable development could never take place unless both the government and civil society are committed towards women empowerment and gender parity to achieve gender mainstreaming. However, cultural legacy, with its socioeconomic and political dimensions, is envisaged as the most challenging impediment. There are three critical areas of concern of substantive nature, which are high rates of women illiteracy, passive representative bureaucracy, as a result of underrepresentation at decision-making levels, as well as gender disparity. To investigate women empowerment challenges in the region, the study first presents the multifaceted hurdle of cultural legacy and identifies the relevant social, economic and political challenges from a multidisciplinary perspective. Thereafter, it looks at two inseparable issues facing women in the Arab region, illiteracy and underrepresentation at decision-making levels. The study, then, indicates the pressing need for policy changes to fill up the massive gender gap existing in the majority of Arab States, where not only a description of gender disparity profile of the Arab region is presented but also a comparative outlook vis-a-vis global trends is highlighted. Finally, the research identifies the indispensible roles of both the government and civil society to address key challenges in synchrony. It does not only call for placing women empowerment among the top priorities on the agenda of policy-makers in setting development plans, but also reiterates the significant role of civil society institutions in the areas of illiteracy eradication, civic education, and women fights advocacy. In this context, a framework of recommended policy actions is presented in an attempt to set effective women empowerment mechanisms to achieve gender mainstreaming and hence contribute to sustainable development.

Factors Influencing the Success of Agricultural Information System （AIS）： A Factor Analysis

This study aims at investigating the AIS （Agricultural Information System） in Hamedan province, Iran, benefiting from the list of criteria for well functioning AISs that were identified in earlier researches. For this purpose, a survey method with multi-stage stratified random sampling technique was used to select 31 agricultural researchers, and 62 extension workers in the province. The data were acquired by questionnaire and structured interviews. The instrument for data collection was subjected to pre-testing, validation and reliability tests. The results of the factor analysis revealed that the criteria could be categorized into four overarching groups based on their inter-correlation. The analysis of mentioned criteria in Hamedan province AIS showed less efficiency and effectiveness than studies conducted in other areas. But among these, two desirable criteria existed. It is recommended that the ecological knowledge system （EKS） should be integrated with AIS, and some ecological and sustainable development criteria should be added to the existing ones.

Computational Performance of the High-Resolution Atmospheric Model FAMIL

This paper describes the model speed and model In/Out （I/O） efficiency of the high-resolution atmospheric general circulation model FAMIL （Finite- volume Atmospheric Model of IAP/LASG） at the National Supercomputer Center in Tianjin, China, on its Tianhe-lA supercomputer platform. A series of three- model-day simulations were carried out with standard Aqua Planet Experiment （APE） designed within FAMIL to obtain the time stamp for the calculation of model speed, simulation cost, and model 1/O efficiency. The results of the simulation demonstrate that FAMIL has remarkable scalability below 3456 and 6144 cores, and the lowest simulation costs are 1536 and 3456 cores for 12.5 km and 6.25 krn resolutions, respectively. Furthermore, FAMIL has excellent I/O scalability and an efficiency of more than 80% on 6 I/Os and more than 99% on 1536 I/Os.

Research on New University Education Management Methods based on the Combination of Humanized and Institutionalized

In this paper, we conduct research on new university education management methods based on the combination of humanized and institutionalized. Modem university education management, system management and the organic integration of humanistic care is under the new period of development, university education management to sustainable development as the main direction of the management. System and manage all exist, man and man is the subject and purpose of system and management. The construction of system, arrangement and operation shall be at the center of the reality of human and highlight the cultural characteristics of follow the characteristic of the knowledge in the differentiation and specialization.

Energy Savings in Municipal Road Lighting： The Case of the Municipality of Hersonissos

In an era governed by economic crisis, deep recession and lack of funds, the perspective of sustainable development drives local government to a more focused and constant effort to adapt to their daily requirements not only in respect to the central state but also towards the growing needs of the local society. As the need for planning actions in accordance with the principles of sustainable energy remains urgent, municipalities continue to envision and to respond to their role in helping to create a better future for generations to come. Thereupon the vision of the Municipality of Hersonissos, as firstly recorded in its Business Plan for 2011-2014, was, and still is, its＇ development in an Economic, Tourist and Cultural pole by adopting and applying the basic principles of sustainable development. At the same time the Municipality＇s rigid vision, planning, and evaluation, oriented by environmental protection, highlighted the need for networking on European level as although cities are different, their problems are often common. Thus on April 18, 2011, the Municipality of Hersonissos, joined the European Union initiative ＂Covenant of Mayors＂ [1] with the common aim of the fight against climate change. This article presents the significant initiatives taken in this direction in the last decade and their results not only on economical level but also along their social impact. It also aims to point out a municipality＇s vital role in knowledge and technology diffusion within the local society as sustainable energy development can be deployed not only by the private sector but also by the public.

Organic Agriculture： Socioeconomic Sustainability of Brazilian Coffee

Worldwide, there is a growing demand for products made by technologies that contribute to environmental preservation and to sustainable rural development. In Brazil, organic farming is one of the most established initiatives in this area. Therefore, it is important to subsidize the decision-making regarding policies for organic coffee production. Thereby, this study analyzed the socio-economic sustainability of this production system in relation to conventional. We applied a semi-structured questionnaire on coffee farms in the Brazilian coffee producers states and analyzed the coffee production cost structure. We identified the reasons that led the producers to organic management, implications of certification on the management, and prices received by organic coffee and the market mechanism. Results showed that there is no standard for organic coffee production and marketing in Brazil. Among the producers, there are different levels of access to technical information and the main limitation of the organic coffee chain is not the technology of production, but the difficulty of coffee marketing. Another important limitation, for medium and large farms, is the cost of manpower, mainly in areas dominated by mountain, where machines operations are not viable. Moreover, the yield of organic coffee system is generally lower than the conventional. Furthermore, soil and climatic differences lead to different regional behavior. Finally, we could conclude that the production of organic coffee can be sustainable in Brazil mainly in two structural conditions： 1） family farmers; and 2） small producers, who employ only one or two workers, preferably only in the harvest time.

A study on tourism development model with dynamic mechanism of circular economy

With the social and economic development,conflict among the shortage of resources,environmental destruction and economic development is ever more pronounced.In this context,the circular economy was gradually accepted.Guided by sustainable development concept and promoted by six external forces,tourism circular economy take tourism micro-cycle model as the core,implement in corporate and social levels,improve resource utilization efficiency,reduce tourism's adverse impacts on the surrounding environment through recycling,reducing and reusing resources,achieve economic,social and environmental development of the organic unity.

Setting Agricultural Research Priorities： The Case for the Agricultural Sector in Swaziland

The study determined the research priorities in Swaziland agricultural sector. Data collection used existing documents on agricultural research prioritizing, Nominal Group Technique and modified Delphi technique, with analysis of data using content categorization and, group and individual ranking of submissions. Findings showed the agricultural priorities from national policies are tied-up with mitigating the effects of HIV and AIDS on food security, reduction of poverty and, sustainable development. The findings also revealed forty-three field crops areas needing research. Seven horticulture areas and eleven livestock sector areas were of high priority. A considerable number of research areas in field crops, horticulture and livestock indicated that the current research system has not adequately addressed research needs, despite efforts made by the private sector, University of Swaziland and Ministry of Agriculture and Cooperatives, for Swaziland to achieve self-sufficiency in food production. Recommendation was that the identified research priorities should be used as basis for directing the limited resources in conducting agricultural research. The participation of all stakeholders would facilitate efficient use of resources and facilitate collaboration amongst research institutions. The University of Swaziland should develop research priorities aligned with national policies and objectives, to facilitate funding for research by both government and donor agencies.

Sustainabilty of Rice Processing in Rural Sub-Saharan Africa

Energy and environmental sustainability are important considerations for increased rice production. This study examined the energy utilization and sustainability of rice processing in sub-Saharan Africa. The community of Gadan Loko village in the song local government of Adamawa State, Nigeria was selected as the focus of study. Rice parboiling, the most energy intensive process in rice processing is carried out usually by women in small quantities of about 13.2 kg using traditional pots on tripod support stoves. The parboiled rice is sun dried on mats before it is taken to the milling stalls where it is milled using milling machines driven by single cylinder diesel engines. There were large variations in the quality of milled rice due to lack of consistency in processing parameters. Accumulation of rice husk in the community created important environmental issues. In this study, methods of improving sustainability of rice processing were investigated. The areas included： the utilization of waste heat from the diesel engines for improved drying and efficient pre-soaking; the utilization of solar energy for pre-soaking; the utilization of rice husks as alternative fuel to firewood; and the optimization and redesign of the stoves and parboiling vessels to minimize heat loss to the environment. The results showed that the utilization of rice husk as alternative fuel and the redesign of the stoves and parboiling vessels will increase the sustainability of rice processing and can be easily adopted by the community. While solar energy pre-soaking was not economical and the utilization of waste heat from the diesel engines for drying and pre-soaking would be difficult to implement at the rural scale, because most of the parboiling is done far away from the milling stalls. The study showed that research, development of appropriate technology, and education （RATE） of the rural community is an important way of increasing sustainability.

A Kind of Sustainable Craft Making： Equal and Flexible Participation in Piecing Acehnese Hat

Terms of sustainable and sustainability have been employed in various sectors and fields since around 1990. To make a society sustainable needs to find ways of having sustainable local activities. The ways may be to find and revitalize local resources, or to support new life styles by accepting outsider＇s new ideas. I see those ways often taken from a perspective that the ways require a structure or institutional organization. To explore in-between ways, it would be better to have an alternative perspective and useful to learn from Southeast Asian cases of managing diversity while accepting new ways （cf. Reid, 2015）. In this essay, I focus on a sustainable craft making of a men＇s hat kopiah meuketob in Aceh, Sumatra, which is traditional item for marriage but has been used in various imaginative ways and has been shaping a regional ＂craft-scape.＂ I examine such ways and various facets of making the hat and conclude that a lesson from the case for making things sustainable is equal and flexible ways of participating in production processes.

Foreign Direct Investments, Environmental Sustainability, and Strategic Planning： A Local Perspective

The present work constitutes further explorations on Foreign Direct Investments （FDI） and environmental quality linkages and a starting point in the strategic planning process in the metropolitan area of Bari （the main province of the Apulia region in southern Italy） in the context of transfrontier commercial cooperation. A panel data analysis is used to show either the existence of the relationships across FDI, economic and environmental variables or their nature across provinces and time （fixed or random effect model）. Model results suggest that diversification of policies across provinces would be more effective in the strategic planning process of a metropolitan city.

Consumer Citizenship Education for Sustainable Development in Higher Education in Latvia

Higher education and science determine the intellectual potential of a society, train new specialists, and consolidate and change citizenship values. Consumer citizenship education for sustainable development is an important function of higher education with a significant moral, social, political, economic, ecological and legal capacity. Consumer citizenship education plays an important role in ensuring the stability and sustainable development of any society. These approaches make it possible to develop the multi-scale thinking of future specialists and enhance their ability to analyse critically the main dilemmas created by the processes of social, legal, environmental, and economic development. The article is devoted to the experience of the Latvian system of higher education in consumer citizenship education within the context of sustainable development. It focuses more specifically on cooperation as a form of voluntary interaction between the partners involved in ensuring sustainable development. The aim of the research is to analyse the experience of consumer citizenship education in Latvian higher education within the context of sustainable development emphasizing the role of various forms of studies. Mostly theoretical research methods have been used in the present study. The starting point of for this research is a theoretical framework. There are both legal underpinnings and practical implementation aspects in this task. The features outlined above are emphasized in the normative acts referring to the Latvian higher education, the documents of the institutions of higher education, and particularly in the study programmes. The results of the research show that consumer citizenship education can be acquired as an interdisciplinary system. The goals and objectives of consumer citizenship education involve training young specialists possessing broad professional knowledge, developed critical thinking, the ability to organize and manage work in a modem way, understanding of the ethical, civic and patriotic values, as well as the ability and skills to engage in various social activities. Consumer citizenship education needs transdisciplinary knowledge if it is to solve the problems of humanity, the problems aggravated by unsustainable, unethical, even immoral consumption. The link between consumer citizenship education and sustainable development is ensured by shared common values, which reveal the sense and importance of both consumer citizenship and ethical sustainability.

Virtue Education： Josef Pieper＇s Vita Contemplativa as Pedagogical Ground

Virtue education in the United States has lost its clout while the corporatization of higher education may be at its peak. The focus of traditional education has shifted from ideas, wisdom, and the love of learning to having a corporate mindset on progress and skills-based knowledge. In many cases, the focus of attention is on remaining viable/sustainable in times of economic decline rather than learning itself, so the resources supporting institutions of higher education are directed into marketing and public relations practices instead of the infrastructure for thinking and learning. This essay draws together three coordinates to make a case for a return to virtue education in the United States. First, the current condition of higher education is shown to have dubiously strayed from a virtue model. Second, the re-emergence of philosophy as a preferred major and its growth in the academy suggest that people realize that something has to change in higher education as they revert back to a broad liberal arts emphasis. Third, a discussion of virtue education from the lens of Josef Pieper＇s virtue philosophy, grounded in the lSta Contemplativa, offers renewed possibility to reengaged higher education for a sustainable future. Together, I suggest that the tradition of higher education in the United States is no longer viable and return to a virtue education model is an alternative that might make higher education sustainable.

Integrating Sustainable Development into Global Institutions:Reforming the United Nations

This article will briefly outline the origins,structure and functions of United Nations Environment Program and the Commission on Sustainable Development in the context of the goals of ecologically sustainable development(ESD).Economic development,social development and environmental protection form the three interconnected parts of ESD.The achievements of the key UN environmental institutions and programs in opening up the global system to civil society,the private sector and a diversity of actors and interests,promoting the role of poverty alleviation as part of ESD through the Millennium Development Goals,and facilitating important Multilateral Environmental Agreements should be recognized.However,with these notable exceptions,organizations such as United Nations Environment Program and the Commission on Sustainable Development have become weak in scientific and technical leadership,global policy,co-ordination(inside and outside the UN) and has few achievements in the international and national implementation of obligations and standards in Global Environmental Governance-including enforcement,compliance and effectiveness.This article will outline the key reasons for this inadequacy.Attention will also be focused on the way forward through of a new United Nations Environment Organization.This will require a clarification of purpose and function(within the UN system and as part of global governance structures) as well as consideration of whether it depends on system-wide UN reform.It is recommended that medium and long term strategies for reform are necessary.

Research on improving the system of account rate in occupational pension

In the reform of government organizations and institutions of China, we put forward the establishment of personal account system in occupational pension, and the introduction of the ＂account＂ management model of the non real account accumulation. This paper analyzes the current situation of personal accounts in our country, and puts forward that the account rate of bank deposit can not resist inflation, and can not reflect the real return rate of China＇s pension funds, which is not conducive to the preservation and appreciation of personal account funds. On the basis of the above, the paper puts forward that the account rate should not only consider the level of economic development and inflation, but also to adapt to the financial payment ability, and establish the personal account risk reserve fund system and other improvement measures, and strive to achieve the sustainable development of the personal account system.