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science china(physics,Mechanics & Astronomy) 2010年第3期53卷 555-561页

作者： CHEN WuShen1,2, MA JingYuan2, ZHANG Jing2 & LU BenKui2 1 nanjing university of technology, nanjing 210009, china 2 purple Mountain Observatory, Chinese Academy of sciences, nanjing 210008, china 1. nanjing university of technology Nanjing 210009 China2. Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210008 China

The Unit Vector Method (UVM) is an orbit determination method extensively applied. In this paper, the UVM and classical Differential Orbit Improvement (DOI) are compared, and a fusion method is given for the orbit determination with different kind data. Based on non-orthogonal decomposition of position and velocity vectors, an approximation scheme is constructed to calculate the state transition matrix. This method simplifies the calculation of the approximate state transition matrix, analyzes the convergence mechanism of the UVM, and makes clear the defect of weight strategy in UVM. results of orbit the determination with simulating and real data show that this method has good numerical stability and rational weight distribution.

关键词： Unit Vector Method state transition matrix non-orthogonal decomposition

Study on Fuzzy Decision for purchasing Spare parts for Machinery Equipment

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International Journal of plant Engineering and Management 2003年第4期8卷 226-232页

作者： YANG Cheng xian, ZHANG Qi Engineering institute of Engineering Corps, pla university of science & technology, nanjing 210007, p.r.china Engineering institute of Engineering Corps PLA University of Science & Technology Nanjing 210007 P. R. China

For purchasing spare parts for machinery products, the general principle, procedure and method are put forward in the paper. Fuzzy theory and method are applied to set up a decisive model for purchasing spare parts. B... 详细信息

关键词： machinery equipment parts purchase fuzzy decision

On the Isometric Minimal Immersion into a Euclidean Space

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Acta Mathematica Sinica,English Series 1999年第4期15卷 555-560页

作者： Qing Chen Department of Mathematics,The university of science and technology of china,Hefei 230026,p.r.china E-mail:qchen@*** Department of Mathematics The University of Science and Technology of China Hefei P. R. China

We study the volume growth of the geodesic balls of a minimal submanifold in a Euclidean space.A necessary condition for the isometric minimal immersion into a Euclidean space is obtained. A classification of non-posi... 详细信息

关键词： Minimal immersion Geodesic ball Volume growth ruled submanifolds

Study on the simulation of transparency of Lake Taihu under different hydrodynamic conditions

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science china Earth sciences 2006年第z1期49卷 162-175页

作者： pANG Yong, LI Yiping & LUO Liancong College of Environmental science and Engineering, Hohai university, nanjing 210098, china nanjing institute of Geography & Limnology, Chinese Academy of sciences, nanjing 210098, china Hohai Univ Coll Environm Sci & Engn Nanjing 210098 Peoples R China Chinese Acad Sci Nanjing Inst Geog & Limnol Nanjing 210098 Peoples R China

It was indicated in this study that there were negative relations between the concentrations of suspended solid (SS) and transparency according to the analysis of measured data of Lake Taihu. Their relations in pervious studies were reviewed, which showed that the changes of transparency in Lake Taihu could be reflected by simulating suspended solid concentration (SSC). Measured data showed that the changes of SSC with wind speed were similar at different water *** increased with the increasing of wind speed. Both wave and lake current of Lake Taihu had positive relations with SSC. However, wave was the main factor affecting sediment suspension, while flow took the second place. In this study, a numerical model coupling lake current, wave and SSC of Lake Taihu was developed. In the SS model, the combined effects of wave and current were *** amounts of suspended and deposited sediments near the lake bed surface layer were treated separately. The stochastic characteristics of turbulent flow pulsation near lake beds were also considered, and the start-up conditions of sediment suspension were introduced to the model. The model elucidated the mutual exchange processes between sediment particles in SS and active sediments within and on the bed surface layer. Simulated results showed that lake current had relatively significant effects on the SSC at littoral areas of Lake Taihu, while SSC at the central area of the lake was mainly influenced by wave. The changes of transparency with SSC were simulated for Lake Taihu using this model. Calculated results were validated by measured data with good fitness, which indicated that the model is basically suitable for the simulation and prediction of transparency of Lake Taihu.

关键词： transparency suspended solid hydrodynamlc sediment suspension model.

Antisense-Induced Blockade of GATA-3 Expression Could Inhibit Th2 Excursion of Tumor Cells in vitro and in vivo

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Cellular & Molecular Immunology 2005年第3期2卷 189-196页

作者： Dongzhu Yao~1 Xiaojun Zhang~1 Haiming Wei~1 Zhigang Tian~(1,2) ~1institute of Immunology,School of Life sciences,university of science & technology of china ~2Corresponding to:Dr.Zhigang Tian,School of Life sciences,university of science & technology of china,No.443,Huangshan road,Hefei 230027,china. institute of Immunology School of Life Sciences University of Science and Technology of China Hefei 230027 China.

previous studies have shown that tumor cells predominantly express Th2 type cytokines and transcription factors. GATA-3, as a Th2-specific transcription factor, plays a central role in positive-regulating Th2 development. So whether the expression of GATA-3 in tumor cells has any effect on tumor development is a question of interest. In the present study, we inhibited the expression of GATA-3 in tumor cells through antisense rNA blockade technique, and observed its effects on tumor in vitro and in vivo. Our results showed that antisense GATA-3 treatment could inhibit the expression of TNF-α and Th2 cytokines in tumor cells, and antisense-induced blockade of GATA-3 could also depress tumor growth in tumor-bearing mice. We suggest that the ratio of T-bet/GATA-3 can be evaluated as a more important marker of the status of Thl/Th2 type. And our results might provide some evidence about the molecular regulatory mechanisms in tumor cell development. Cellular ＆ Molecular Immunology. 2005 ;2（3 ）： 189-196.

关键词： GATA-3 antisense rNA tumor cell Th1/Th2 cytokine and transcription factor

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通信系统性能仿真评估算法的研究

系统仿真学报 2004年第3期16卷 390-392页

作者：王聪江光杰解放军理工大学通信工程学院南京210007 解放军理工大学指挥自动化学院南京210007

建模与仿真技术的应用为解决复杂大系统的性能评估提供了一种有效的技术手段。本文主要侧重于对仿真结果的评估,提出了以云模型为基础的系统性能评估算法。该评估算法用云理论实现定性属性值和定量属性值之间的转换。该评估算法以不确... 详细信息

建模与仿真技术的应用为解决复杂大系统的性能评估提供了一种有效的技术手段。本文主要侧重于对仿真结果的评估,提出了以云模型为基础的系统性能评估算法。该评估算法用云理论实现定性属性值和定量属性值之间的转换。该评估算法以不确定性为出发点,在理论上借鉴了层次分析法的某些处理手段,可以较好地处理指标体系中广泛存在的泛层次树形结构现象,使评估结果更加可信。实践表明,该方法对于复杂系统的综合评价更为方便、可行。

关键词：性能评估云模型仿真通信系统

Genotoxicity　of　substituted　nitrobenzenes　and　the　quantitative　structure－activity　relationship

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Journal of Environmental sciences 1996年第1期8卷 103-109页

作者： Huang Qingguo Liu Yongbin Wang Liansheng Han Shuokui(Department of Environmental science and Engineering,nanjing university,nanjing 210093,china)Yang Jun(Jiangsu Metallurgy institute.nanjing 210007,china)

The genotoxicity of 22 substituted nitrobenzenes were evaluated by the chromosome aberrations test in in vitro human peripheral lymphocytes.18 of 22 compounds exhibit genotoxic *** structure-activity relationship model was established to correlate the genotoxicity of substituted nitrobenzenes with the characteristics of the substituents on benzene ring.

关键词： quantitative structure-activity relationship(QSAr) substituted nitrobenzenes genotoxicity.

SHrIMp dating of the Bangong Lake SSZ-type ophiolite: Constraints on the closure time of ocean in the Bangong Lake-Nujiang river,northwestern Tibet

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Chinese science Bulletin 2007年第7期52卷 936-941页

作者： SHI renDeng1,2 1 School of Earth and Space sciences, university of science and technology of china, Hefei 230026, china 2.institute of Geology, Chinese Academy of Geological sciences, Beijing 100037, china (email: shird@***) School of Earth and Space sciences University of Science and Technology ofChina Hefei 230026 China

The Bangong Lake ophiolite is located in the westernmost part of the Bangong Lake-Nujiang river suture zone. It is a tectonic mélange consisting of numerous individual blocks of peridotite, pillowed and massive lavas and mafic dykes with SSZ-type ophiolitic geochemical affinity formed at the end of a Wilson circle. The SHrIMp U-pb ages of the co-magmatic zircon domains from one gabbroic dyke (Sample 01Y-155) range from 162.5±8.6 Ma to 177.1±1.4 Ma with an average of 167.0±1.4 Ma (n = 12, MSWD = 1.2), suggesting that the subduction of the Bangong Lake Neo-Tethyan Ocean started before the Middle Jurassic. It is inferred that the tectonic transform from spreading to subduction of the Neo-Tethyan Ocean began before the Middle Jurassic in the Bangong Lake area.

关键词：西藏班公湖怒江缝合带古海洋闭合时期 SSZ型蛇绿岩 SHrIMp 测年

TrANSMISSION MOMENTArY EFFICIENCY BASED ON THE D'ALEMBErT-LAGrANGE EQUATION FOr INVOLUTES GEArS

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Chinese Journal of Mechanical Engineering 2004年第2期17卷 272-275页

作者： Liang Yi Lai Changying School of Mechanical Engineering,nanjing university of science and technology,nanjing 210094, china School of Mechanical Engineering Nanjing University of Science and Technology Nanjing 210094 China Department of science and technology Studies University College London WC1E 6BT UK

The D'Alembert-Lagrange equation is introduced and used to derive theformulas of momentary efficiency for external gearing of standard involutes spur gears. The gearingswith correct and increased center distance are discussed. The momentary efficiency formula iscalculated and analyzed using software Matlab. The derived formula of momentary efficiency is alsocompared with the traditional formula.

关键词： D'Alembert-Lagrange equation Involutes gear Momentary efficiency

Minimal feasible sets in variable resource constrained projects

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Journal of Systems Engineering and Electronics 2009年第5期20卷 974-984页

作者： Cui Wanan~(1,2,3),Yue Chaoyuan~3,Chen Yingchun~4 & Cao Xiuning~5 1.Coll.of Management,Guangxi Univ.for Nationalities,Nanning 530006,p.r.china 2.School of Economics and Management,Wuhan Univ.,Wuhan 430072,p.r.china 3.Inst.of Systems Engineering,Huazhong Univ.of science and technology,Wuhan 430074,p.r.china 4.Unit 91388 of the pla,Zhanjiang 524022,p.r.china 5.School of Business,Hunan Univ.of science and technology,Xiangtan 411201,p.r.china Coll. of Management Guangxi Univ. for Nationalities Nanning 530006 P. R. China School of Economics and Management Wuhan Univ. Wuhan 430072 P. R. China Inst. of Systems Engineering Huazhong Univ. of Science and Technology Wuhan 430074 P. R. China Inst. of Systems Engineering Huazhong Univ. of Science and Technology Wuhan 430074 P. R. China Unit 91388 of the pla Zhanjiang 524022 P. R. China School of Business Hunan Univ. of Science and Technology Xiangtan 411201 P. R. China

To determine the reasonable resource dependent relations between activities for the purpose of exactly computing the total floats and the free floats of activities, correctly identifying critical activities and critical sequences in a project schedule with variable resource constraints, the concept of the minimal feasible set （MFS） is proposed and the properties of MFS are discussed. The methods to identify optimal MFSs and resource links are then studied. Furthermore, MFS is generalized to the situation that the preconditions of MFS are not satisfied. Contrastive results show that in establishing resource links and resolving floats, MFS is at least not inferior to other methods in all cases and is superior in most situations.

关键词： project schedule resource constraint minimal feasible set resource dependent relation.