新安全格局下平安中国建设制度变迁研究

安全治理价值诉求与现实需求目标设定是安全治理制度变迁的方向指引,安全治理顶层设计与焦点事件构成安全治理制度变迁的主要驱动力。在此基础上构建安全治理的“目标-驱动”动态分析框架,对平安中国建设制度纵向和横向的体系完善走向、制度文本演化趋向、党领导下“社会长期稳定奇迹”的实现过程进行解读,能够为了解平安中国建设制度变迁与新安全格局的形成,以及深入理解党的二十大报告中关于“建设更高水平的平安中国,以新安全格局保障新发展格局”的战略部署,提供思考视角。进入新世纪以来,中国安全治理历经“备考”的基础奠定、“初考”的体系建立、“中考”的能力提升、“预考”的全面回应、“大考”的现代化答卷等,推动平安中国建设制度从社会治安综合治理、平安中国建设、深化平安中国建设、建设更高水平的制度变迁。从价值诉求、现实需求、顶层设计、焦点事件等视角提出平安中国建设制度的优化路径,并通过技术支撑和基础保障强化实现路径。

Design of Sustainable Multifunctional Nanocoatings：A Goal-driven Multiscale Systems Approach

Polymer nanocomposites have a great potential to be a dominant coating material in a wide range of applications in the automotive,aerospace,ship-making,construction,and pharmaceutical industries.However,how to realize design sustainability of this type of nanostructured materials and how to ensure the true optimality of the product quality and process performance in coating manufacturing remain as a mountaintop area.The major challenges arise from the intrinsic multiscale nature of the material-process-product system and the need to manipulate the high levels of complexity and uncertainty in design and manufacturing processes.In this work,the challenging objectives of sustainable design and manufacturing are simultaneously accomplished by resorting to multiscale systems theory and engineering sustainability principles.The principal idea is to achieve exceptional system performance through concurrent characterization and optimization of materials,product and associated manufacturing processes covering a wide range of length and time scales.Multiscale modeling and simulation techniques ranging from microscopic molecular modeling to classical continuum modeling are seamlessly coupled.The integration of different methods and theories at individual scales allows the quantitative prediction of macroscopic system performance from the fundamental molecular behavior.Furthermore,mathematically rigorous and methodologically viable approaches are pursued to achieve sustainability-goal-oriented design of material-process-product systems.The introduced methodology can greatly facilitate experimentalists in novel material invention and new knowledge discovery.At the same time,it can provide scientific guidance and reveal various new opportunities and effective strategies for achieving sustainable manufacturing.The methodological attractiveness will be fully demonstrated by a detailed case study on the design of thermoset nanocomposite coatings.

On Application of Output-Driven Hypothesis on College English Teaching

This paper discusses how college English teaching can be carried out based on the output-driven hypothesis. It consists of three sections. Section one briefly describes the views of the output-driven hypothesis with relevant theoretical explanations. Section two further illustrates how such teaching practice can be conducted in terms of the teaching objectives, teaching procedures, and methods, and assessment focuses. Section three points out the potential challenges faced by university English teachers when the hypothesis is tested

河北省环保科技发展问题浅析

环保科技的发展会弱化人类经济活动的生态足迹并创造出新的经济增长点,为社会经济可持续发展保驾护航。河北省的资源环境状况严重阻碍着区域社会经济的可持续发展,实现能源-经济-环境系统协调发展的环保科技瓶颈亟待突破。本文在简析河北省环保科技发展现状的基础上,剖析了环保科技发展存在的问题,提出了推进环保科技发展的对策建议,以期为突破区域经济可持续发展过程中的环境约束提供一些启示。

Policy Review and Outlook on China's Sustainable Development since 1992

The Road to Rio+20 is the journey of countries in the world pursuing the sustainable development.As the first country to release the national Agenda 21,China's experience and lessons are of great significance for both China itself and other countries.The paper reviews the progress made and problems remained in pursuing the sustainable development in China with regard to policy formulation,institutional arrangements,planning and management.In the past five years,the mandatory targets-driven approach,which focused on energy efficiency and key pollutants reduction,played a very important role and made China comprehensive outcomes for sustainability.In order to achieve the targets,China adopted an integrated policy package including legal,administrative,economic and technology instruments.During the 12th Five-Year Plan period(2011-2015),China will continue and strengthen the approach above and mainstream the transformation of economic development pattern through realizing the idea of green and low-carbon development.By summarizing policy trends in the world,the paper points out two directions,i.e.,integration approach and taking prioritized and concrete actions for a sustainable future beyond 2012.The paper also presents policy approaches and recommendations for sustainable development in the next 10 years in China.

SIGNATURE DRIVEN MULTIPLE TARGET TRACKING

Tracking multiple maneuvering targets remains a challenge due to the existence of clutter and the disturbance of spurious targets. Traditional tracking algorithms treat target measurements as points which results in the loss of information. We have propose a Signature Driven multiple-target Tracking (SDT) method which uses target signature in spectral,spatial and temporary spaces as well as the Markov property of target motion,and the data association process in SDT is very effective. The experimental results have shown its outstanding performance.

A novel method of dynamic characteristics analysis of machine tool based on unit structure

A novel approach,which can be used for dynamic characteristics analysis of machine tools based on unit structure(US),is reported in this paper.The concepts of unit structures for design of machine tools are defined.In order to satisfy the dynamic characteristics requirement of high natural frequency and light-weight of US,a design method of multi-disciplinary optimization of NSGA-II about unit structures driven by natural frequency and mass is developed.Through analyzing the unit structures,key factors affecting the natural frequency and mass are extracted,and the mathematical models of natural frequency and mass about unit structures are also established by using central composite design and response surface model.The goal of high natural frequency and light-weight is reached by using the multi-objective genetic algorithms.The Pareto optimal set is also obtained.The dynamic behavior of US is investigated by the experimental modal analysis.To show the efficiency of the proposed novel method,the example of YKW51250 gear shaping machine bed is used.Through optimization of NSGA-II about US of YKW51250 machine bed,the natural frequency of YKW51250 gear shaping machine bed is increased by 30.4%and its mass decreased by 5.2%comparing with the original design.By studying the dynamic characteristics of the simplified machine tools bed,useful laws are obtained,and these laws can be used in primary design of NC machine tools structures.The optimal method based on US can be also applied to the dynamic optimal design of machine tools and other similar equipments.