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TAX EVASION:MODELS WITH SELF-AUDIT

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Journal of Systems Science & Complexity 2008年第4期21卷 487-518页

作者： Kin Keung LAI department of Management Sciences City University of Hong Kong College of Business Management Hunan University

与传统的税审计不同，有自我审计的管理是由纳税人的审计的联合他自己和由税权威的审计。这篇论文主要与自我审计和它的相关性质在管理下面学习一个纳税人逃税的最佳的政策，以便推出一些有效建议和理论底制止逃税。当审计被执行时，假... 详细信息

与传统的税审计不同，有自我审计的管理是由纳税人的审计的联合他自己和由税权威的审计。这篇论文主要与自我审计和它的相关性质在管理下面学习一个纳税人逃税的最佳的政策，以便推出一些有效建议和理论底制止逃税。当审计被执行时，假设仅仅避的税的某个比例能被发现，作者首先与自我审计提出一个静态的模型。这个模型被划分成二个阶段。在第一个阶段，纳税人声明他们的税，然后，税权威选择审计目标基于已知的可能性，并且宣布结果；如果纳税人被选择，他将进入第二个阶段，他在期间有一个机会缴避的税和相应迟了的费用然后被税权威审计。作者在第一个阶段和最佳的比例显示出逃税的最佳的数量的存在和唯一到在第二个阶段自我暴露。作者也讨论内部解决方案的相关性质，并且在一些参数上做弹性分析。而且，作者把静态的模型扩大到相应二时期的模型，并且学习扩大模型的答案的存在和唯一。在当审计被执行时，逃税能仅仅与某个概率被发现的假设下面，最后，作者与自我审计提出另一个静态的模型并且调查它的性质。

关键词：存在性唯一性自我审查静态模型税务部门

INVESTIGATION ON THE FLOW STABILITY OF NEWTONIAN FLUID IN ECCENTRIC ANNULUS VIA THE AXIAL RECIPROCATION OF THE INNER TUBE

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Journal of Hydrodynamics 2007年第6期19卷 671-676页

作者： YUAN Ai-wu CUI Hai-qing GAO Tao Management Institute Tianjin University Tianjin 300072 China department of Petroleum Engineering Daqing Petroleum Institute Daqing 163318 China Daqing Exploration and development Institute Daqing 163712 China

The governing equation, together with the formulas of the averaged flux and the stability parameter for Newtonian fluid flowing in eccentric annulus via the axial reciprocation of the inner tube was established in the bipolar coordinate system. Numerical calculation was conducted for the measurement of water flow using the formulas above, of which the results agree well with the experimental data. It is shown that the flow instability can be induced by the increase of the stroke, the frequency, and the eccentricity of annulus, making the sucker rod more susceptible to partial abrasion. Some protecting methods, including adding centralizers, adjusting the stroke and frequency, are proposed to protect the sucker rod from the partial abrasion, and satisfactory results have been achieved in the oilfields.

关键词： eccentric annulus axial reciprocation flow stability partial abrasion

Local Gromov-Witten invariants of canonical line bundles of toric surfaces

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Science china Mathematics 2010年第6期53卷 1571-1582页

作者： YANG Fei & ZHOU Jian department of Mathematical Sciences,Tsinghua university,Beijing 100084,china department of Mathematical Sciences Tsinghua University Beijing China

We define and compute by localizating the local equivariant Gromov-Witten invariants of the canonical line bundles of toric surfaces,not necessarily Fano.

关键词： local Gromov-Witten invariants localization partition function geometric engineering

Composition of sandstone and heavy minerals implies the provenance of Kuqa Depression in Jurassic, Tarim basin, china

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Progress in Natural Science:Materials International 2005年第7期15卷 633-640页

作者： WU Chaodong, LIN Changsong, SHEN Yanping and FENG Xue ( Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, Peking university, Beijing 100871, china department of Resources, china university of Geosciences, Beijing 100083, china) Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of Education Peking University Beijing 100871 China department of Resources China University of Geosciences Beijing 100083 China

The petrological characteristics and heavy mineral assembly of the Jurassic System in Kuqa Basin are consistent with the tectonic evolution, which is the major factor controlling the filling process of Kuqa Basin. Controlled by the source areas at the both sides of the Basin, the matrixes are dominated by sedimentary rock, high-grade metamorphic rock, acid magmatic rock, and the highest heavy mineral assemblage of zircon-garnet-magnetite in the content. According to heavy mineral indexes, the Jurassic strata can be classified into three rhythmic units of heavy mineral. The lower sequence contains abundant heavy minerals and relatively high content of detritus and its matrixes primarily came form the recycling orogen. The assemblage of "zircon-garnet-magnetite" indicates that the sedimentary area in the early evolution period of the basin is relatively near the provenance. The middle sequence is different from the lower sequence in the heavy mineral assemblage and has the different characteristics from that of source rock. The heavy mineral assemblage is "garnet-zircon" with the highest content of garnet and its main matrices are the high-grade metamorphic rock, acid magmatic rock and hydrothermal vein at the northeastern edge of the basin. The middle and upper sequences are characterized by the clast provenance, which is primarily from the recycling orogen at the northern edge of the basin and secondarily from the southern uplift. As a result of the two provenances, the strata with apparent changes of heavy mineral assemblage and index better coincides with the interfaces of the secondary strata sequences, which reflects the denudation history and the filling process of the orogen at the northern edge of the basin.

关键词： sandstone components provenance analysis filling sequence tectonic evolution.

Study of MMLV RT-Binding with DNA using Surface Plasmon Resonance Biosensor

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Acta Biochimica et Biophysica Sinica 2005年第9期37卷 634-642页

作者： Lei WU~1 Ming-Hui HUANG~2 Jian-Long ZHAO~(1*) Meng-Su YANG~~(1,2*) 1 Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,china 2 department of Bioloy and Chemistry,city university of Hong Kong,Hong Kong,china Shanghai Institute of Microsystem and Information Technology Chinese Academy of SciencesShanghai 200050 China department of Biology and Chemistry City University of Hong KongHong Kong China

Surface plasmon resonance biosensor technique was used to study the binding of Moloneymurine leukemia virus reverse transcriptase without RNase H domain （MMLV RT-） with DNA in the ab-sence and in the presence of *** DNA substrates,including single-stranded DNA （ssDNA）,DNA template-primer （T-P） duplex and gapped DNA,were immobilized on the biosensor chip surface usingstreptavidin-biotin,and MMLV RT--DNA binding kinetics were analyzed by different *** RT-could bind with ssDNA and the binding was involved in conformation *** RT- binding DNA T-Pduplex and gapped DNA could be analyzed using the simple 1:1 Langmuir *** lack of RNase Hdomain reduced the affinity between MMLV RT- and T-P *** effects of RT inhibitors,includingefavirenz,nevirapine and quercetin,on the interaction between MMLV RT- and gapped DNA were analyzedaccording to recovered kinetics *** slightly interfered with the binding between RT andDNA and the affinity constant in the presence of the inhibitor (KA=1.21×106 M-1) was lower than in theabsence of the inhibitor (KA=4.61×106 M-1).Nevirapine induced relatively tight binding between RT andDNA and the affinity constant in the presence of the inhibitor (KA=1.47×107 M-1) was approximately threefolds higher than without nevirapine,mainly due to rapid association and slow ***,aflavonoid originating from plant which has previously shown strong inhibition of the activity of *** to have minimal effect on the RT-DNA binding.

关键词： surface plasmon resonance biosensor reverse transcriptase kinetics inhibitor

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山东省青少年足球运动现状的调查与分析

山东体育科技 2000年第4期22卷 21-23页

作者：张荃济南大学体育系山东济南250002

以参加 2 0 0 0年山东省青少年足球锦标赛的运动员为研究对象 ,对当前我省从事足球运动的青少年年龄结构、参赛人数和比赛成绩等方面进行了调查分析 ,认为我省青少年足球运动员年龄结构较理想 ,梯队建设较好 ,但各地市之间的普及和发展... 详细信息

以参加 2 0 0 0年山东省青少年足球锦标赛的运动员为研究对象 ,对当前我省从事足球运动的青少年年龄结构、参赛人数和比赛成绩等方面进行了调查分析 ,认为我省青少年足球运动员年龄结构较理想 ,梯队建设较好 ,但各地市之间的普及和发展有失平衡 ,尖子运动员产出率偏低 ,赛场风气有待净化。

关键词：山东省足球青少年普及尖子运动员综合素质

Second mode unstable disturbance measurement of hypersonic boundary layer on cone by wavelet transform

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Acta Mechanica Sinica 2011年第4期27卷 488-493页

作者： Jian Han.Nan Jiang.Yan Tian department of Mathematics,Tianjin university,300072 Tianjin,china department of Mechanics,Tianjin university,300072 Tianjin,china Tianjin Key Laboratory of Modern Engineering Mechanics,300072 Tianjin,china State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,100190 Beijing,china department of Mathematics Tianjin University Tianjin China department of Mechanics Tianjin University Tianjin China Tianjin Key Laboratory of Modern Engineering Mechanics Tianjin China State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing China

Experimental investigation of hypersonic boundary layer instability on a cone is performed at Mach number 6 in a hypersonic wind tunnel. Time series signals of instantaneous fluctuating surface-thermal-flux are measured by Pt-thin-film thermocouple temperature sensors mounted at 28 stations on the cone surface in the streamwise direction to investigate the development of the unstable disturbance. Wavelet transform is employed as a mathematical tool to obtain the multi-scale characteristics of fluctuating surfacethermal-flux both in the temporal and spectrum space. The conditional sampling algorithm using wavelet coefficient as an index is put forward to extract the unstable disturbance waveform from the fluctuating surface-thermal-flux *** generic waveform for the second mode unstable disturbance is obtained by a phase-averaging technique. The development of the unstable disturbance in the streamwise direction is assessed both in the temporal and spectrum space. Our study shows that the local unstable disturbance detection method based on wavelet transformation offers an alternative powerful tool in studying the hypersonic unstable mode of laminar-turbulent transition. It is demonstrated that, at hypersonic speeds, the dominant flow instability is the second mode, which governs the course of laminar-turbulent transition of sharp cone boundary layer.

关键词： Hypersonic boundary layer. Sharp cone Insta-bility Wavelet transform

Miscibility of Semi-flexible Thermotropic Liquid Crystalline Copolyesteramide with Polyamide 66

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Chemical Research in Chinese Universities 2000年第4期16卷 356-362页

作者： XIE Xiao-Lin, TJONG S. C. and LI R. K. Y. (department of Chemistry, Huazhong university of Science and Technology, Wuhan 430074 department of Physics and Materials Science, city university of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong P. R. china) 华中科技大学湖北武汉 430074 香港城市大学香港

Liquid crystalline polymer-polyamide 66 (LCP/PA66) blends were compounded by using a Brabender mixing followed by compression moulding. The LCP employed was a semi-flexible liquid crystalline copolyesteramide based on 30% (molar fraction ) of p-amino benzoic acid (ABA ) and 70% (molar fraction) of poly (ethylene terephthalate) (PET). The LCP/PA66 blends were investigated in terms of the thermal and dynamic mechanical properties. It was found that PA66 and LCP components of the blends are miscible in the molten state, but are partially miscible in the solid state. The inclusion of the semi-flexible LCP into PA66 retards the crystallization rate of PA66. Furthermore, the melting temperature and the degree of crystallinity of PA66 are reduced considerably due to the LCP addition.

关键词： Polyamide 66 Semi-flexible copolyesteramide Miscibility

AN EXPERIMENTAL STUDY OF THE LARGE SCALE COHERENT STRUCTURES IN A FORCED FREE SHEAR LAYER

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Acta Mechanica Sinica 1990年第1期6卷 9-14页

作者： Zhang Hongquan Shu Wei, department of Mechanics, Tianfin university, Tianjin, china department of Mechanics Tianjin University Tianjin China

The dynamic characteristics of the large scale coherent structures in a forced free shear layer are experi- mentally studied by means of flow visualization. The quantitative measurements are acquired by the use of a LDV. It is shown that the development of the coherent structures can be greatly influenced by upstream artificial perturbations and as a result the mixing in the layer can be controlled. Like vortex merging, vortex splitting is also a common evolu- tion pattern in the development of the coherent structures.

关键词： large scale coherent structure vortex merging vortex splitting