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Precession of the Orbital Plane of Binary Pulsars and Significant Variabilities

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Chinese Journal of Astronomy and Astrophysics 2005年第4期5卷 379-398页

作者： Bi-Ping Gong Department of Astronomy, nanjing univ.r.ity, nanjing 210093 bpgong@*** Department of Astronomy Nanjing University Nanjing 210093

There are two ways of expressing the precession of orbital plane of a binary pulsar system, given by Barker ＆ O＇Connell, Apostolatos et al. and Kidder, respectively. We point out that these two ways actually come from the same Lagrangian under different degrees of freedom. Damour ＆ Schaefer and Wex Kopeikin applied Barker ＆ O＇Connell＇s orbital precession velocity in pulsar timing measurement. This paper applies Apostolatos et al.＇s and Kidder＇s orbital precession velocity. We show that Damour ＆ Schaefer＇s treatment corresponds to negligible Spin-Orbit induced precession of periastron, while Wex ＆ Kopeikin and this paper both found significant （but not equivalent） effects. The observational data of two typical binary pulsars, PSr J{2.51-08{2. and PSr J1713＋0747, apparently support a significant Spin-Orbit coupling effect. Specific binary pulsars with orbital plane nearly edge on could discriminate between Wex ＆ Kopeikin and this paper： if the orbital period derivative of the double-pulsar system PSrs J0737-3039 A and B, with orbital inclination angle i=87.7-{2.^＋17 deg, is much larger than that of the gravitational radiation induced one, then the expression in this paper is supported, otherwise Wex ＆= Kopeikin＇s is supported.

关键词： pulsars: binary pulsars - geodetic precession: individual (PSr J2.51-082. PSr J1713+0747 PSrs J0737-3039 A and B)

Landscape ecological assessment and eco-tourism development in the South Dongting Lake Wetland, china

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Journal of Environmental Sciences 2003年第2期15卷 271-278页

作者： HE Ping 1,2. WANG Bao-zhong 1,3 (1.Central South Forestry univ.r.ity, Zhuzhou 412.06, china 2.{2. International Engineering Consulting Corporation, Beijing 100044, china 3.nanjing univ.r.ity, nanjing 210093, china Central South Forestry univ.r.ity Zhuzhou 412006

As an important resource and the living environment of mankind, wetland has become gradually a highlight, strongly concerned and intensively studied by scientists and sociologists. The governments in the world and the whole society have been paying more and more attention on it. The Dongting Lake of china is regarded as an internationally important wetland. For a rational development and protection of the wetland, an investigation and studied on its resources and its value to tourism in the South Dongting Lake was conducted, to create an assessment system of the ecological landscapes, and to evaluate qualitatively and quantitatively the value of wetland landscape to the eco-tourism. The results showed that the scenic value of the South Dongting Lake Wetland satisfied the criterion of AAAA grade of china national scenic attraction. The eco-tourism value of the landscape cultures in the South Dongting Lake Wetland was discussed with emphasis. It were formulated that a principle and frame of sustainable exploitation of the wetland landscapes and it was proposed as well that establishing a Wetland Park and developing eco-tourism in the South Dongting Lake. Wetland is a fragile ecosystem with low resistance to the impact of the exploitation. Thus, we must pay intensively attention to the influence of exploitation on the landscape, take the ecological risk in account to employ a right countermeasure and avoid the negative affection.

关键词： South Dongting Lake wetland landscape eco-tourism Wetland Park ecological assessment

On the Conditions of a Center and General Integrals of Quadratic Differential Systems

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Acta Mathematica Sinica,English Series 2001年第2期17卷 229-236页

作者： Wei Yin YE Department of Mathematics. nanjing Normal univ.r.ity. nanjing 2.0097, P. r. china Yan Qian YE Department of Mathematics. nanjing univ.r.ity, nanjing 210093, P. r. china Department of Mathematics Nanjing Normal University Nanjing 210097 P. R. China Department of Mathematics Nanjing University Nanjing 210093 P. R. China

We give the general integral of quadratic differential system with center in two cases under the Chinese classification.

关键词： Quadratic differential system Center General integral

Variational construction of unbounded orbits in Lagrangian systems

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Science china Mathematics 2010年第3期53卷 617-624页

作者： CHENG Chong-Qing 1, & LI Xia 2.1 Department of Mathematics, nanjing univ.r.ity,{2.,{2. 2.Department of Mathematics, Suzhou univ.r.ity of Science and Technology, Suzhou 2.5001,{2. 1. Department of Mathematics Nanjing University Nanjing 210093 China2. Department of Mathematics Suzhou University of Science and Technology Suzhou 215001 China

We show the existence of unbounded orbits in perturbations of generic geodesic flow in T2.by a generic periodic potential. Different from previous work such as in Mather (1997), the initial values of the orbits obtain... 详细信息

关键词： positive definite Lagrangian variational method unbounded orbit

Basic study on architectural planning of psychiatric hospital

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Science china(Technological Sciences) 2010年第7期53卷 1755-1767页

作者： ZHOU Ying1 & SUN YaoNan2.1 Southeast univ.r.ity, {2. 2.0096,{2. 2.3} of Science & Technology, {2. 2.0094,{2. 1. Southeast univ.r.ity Nanjing 210096 China2. Nanjing University of Science & Technology Nanjing 210094 China

This paper considers the main problems of the current mental health facilities in china from the standpoint of architects on the background that mental disorder has become a serious threat to human health. In order to effectively learn from the developed countries, this paper reviews the brief history of the world's mental health and the main phases of the evolution of psychiatric hospitals, analyzes the actual situation of mental health facilities abroad based on a large amount of data, compares the roles of public and private psychiatric hospitals from the viewpoint of government supervision, and investigates the functions and positions of psychiatric hospitals and the psychiatry divisions of general hospitals in the medical system. At last, this paper discusses the necessity of the systemization of mental health facilities, the role of psychiatric hospitals in this facility system and the developing approaches of psychiatric hospitals in china.

关键词： medical facility for mental disorder facility system psychiatric hospital principles

南京雨花台区创新打造“幸福三圈”持续提升民生服务水平

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社会与公益 2024年第7期 8-10页

作者： Social Work Department of nanjing Yuhuatai District Committee of the Communist Party of china 中共南京市雨花台区委社会工作部

近年来,雨花台区坚持共建共治共享理念,聚焦群众迫切需求和民生领域短板,布局建设民生事业“幸福三圈”,即5分钟社区商业圈、10分钟文化体育圈、15分钟健康服务圈,推出一系列具有针对性的改革创新举措。该区推动基层社区协同高效治理,... 详细信息

近年来,雨花台区坚持共建共治共享理念,聚焦群众迫切需求和民生领域短板,布局建设民生事业“幸福三圈”,即5分钟社区商业圈、10分钟文化体育圈、15分钟健康服务圈,推出一系列具有针对性的改革创新举措。该区推动基层社区协同高效治理,公共服务优质均衡发展,群众幸福指数持续提升,先后获评全国群众体育先进单位、省义务教育优质均衡发展区、首批“江苏省社区医院示范区”,入选全国智慧健康养老示范基地。

关键词：民生服务雨花台区商业圈创新举措民生事业体育先进单位幸福指数社区医院

Adsorption of surfactants onto acrylic ester resins with different pore size distribution

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Science china Chemistry 2006年第5期49卷 445-453页

作者： YANG Weiben1,2.3,LI Aimin1,3,CAI Jianguo1,3,MENG Guanhua1,3 & ZHANG Quanxing1,3 1. State Key Laboratory of Pollution Control and resource reuse,School of the Environment,nanjing {2.,nanjing 210093,china 2. nanjing College of Chemical Technology,nanjing 2.0048,china 3. Jiangsu Engineering & Technology research Center for Organic Toxicant Control and resource reuse,nanjing 2.0038,china 1. State Key Laboratory of Pollution Control and resource reuse School of the Environment Nanjing University Nanjing 210093 China 2. nanjing College of Chemical Technology Nanjing 210048 China 3. Jiangsu Engineering & Technology research Center for Organic Toxicant Control and resource reuse Nanjing 210038 China

In this study, a series of acrylic ester resins with different pore size distribution were prepared successfully by varying the type and the amount of pore-forming agents. In order to inves-tigate the adsorption behavior and mechanism of surfactants on acrylic ester resins, three kinds of surfactants were utilized as adsorbates that were sodium 6-dodecyl benzenesulfonate (6-NaDBS), sodium 1-dodecyl benzene sulfonate (1-NaDBS) and sodium 1-dodecyl sulfonate, respectively. It was observed that the surface area was available in a particular pore size and an appropriate pore size of resins appeared to be more important for the adsorption of surfactants. As compared to commercial acrylic ester resins XAD-7 and HP2.G, 50# and 38# resins exhibited more excellent adsorption properties toward 1-NaDBS and 6-NaDBS. The experimental equilibrium data were fitted to the Langmuir, and double-Langmuir models. Two models provided very good fittings for all resins over the temperature range studied. The investigation indicated that electrostatic attraction and hydrogen bond between resins and surfactants were the main forces and had an obvious effect on adsorption proc-ess.

关键词： acrylic ester resin, surfactant, adsorption, pore size distribution, isotherm.

CHALLENGES AND PrOBLEMS: china'S UrBAN GOVErNANCE

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Chinese Geographical Science 2002年第2期12卷 152-156页

作者： WANG Hong, GU Chao lin(Department of Urban and resources Sciences, nanjing univ.r.ity, nanjing 210093, P.r.{{2.) Department of Urban and resources Sciences Nanjing University Nanjing 210093 P. R. China

china′s urban reforms have brought social progress and development, but a comprehensive national system of social welfare (for example, unemployment insurance, pensions, medical care and public housing) for new migrants from rural areas is lacking. One of the most remarkable changes in Chinese cities in the last decade was a change in social "equality", with the rise of new poverty both in individual communities and some social groups in urban society. However, there is little social assistance and public infrastructure for the migrants. Governments or communities or individual should pay attention to the control of new urban poverty and new slums. This paper consider that it is necessary to launch a successful policy, which include mainly: 1) accommodating urban growth through low cost investment projects; {2. urban economy depends heavily on successful macroeconomic policy; 3) to broaden the three channels linking adjustment to the incidence of urban poverty; 4) to restructure urban economic based on the high or new technology; 5) to coordinate relationship between urban economic growth and environment management for sustainable development of Beijing′s metropolitan fringe.

关键词： urban challenges and problems urban governance urban policies

A new sequential learning algorithm for rBF neural networks

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Science china(Technological Sciences) 2004年第4期47卷 447-460页

作者： YANG Ge1, LV Jianhong1 & LIU Zhiyuan2.1. Department of Power Engineering, Southeast univ.r.ity, {2. 2.0096,{2. 2. Department of Power Engineering, {2. Institute of Technology, {2. 2.0013,{2. 1. Department of Power Engineering Southeast University 210096 Nanjing China 2. Department of Power Engineering Nanjing Institute of Technology 210013 Nanjing China

Due to their inherent imperfections, it is hard to use the static neural networks for nonlinear time-varying process modeling and prediction, and the minimal resource allocation network (MrAN) is difficult to be realized for its too many regulation parameters. A new sequential learning algorithm for radial basis function (rBF) neural networks based on local projection named Local Projection Network (LPN) is proposed in this paper. The results of validation for several benchmark problems with the new algorithm show that the presented LPN not only has the same level as M-rAN in network size and precision of the outputs, but also has fewer regulation parameters and is more predictable.

关键词： radial basis functions, local projection network, minimal resource allocation network, learning algorithm.