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Chinese Quarterly Journal of Mathematics 2011年第4期26卷 488-493页

作者：赵文菊李东亚 Deptartment of Mathematics Huanghuai University

Function P-sets are a set pair which are composed of function internal packetsets S F and function outer packet sets S F or (S F , S F ) are function P-sets. Function P-sets have dynamic characteristics and law characteristics. Based on function P-sets, P-information law discovery theorems which has attribute supplementing-deleting are given. Mining-discovery and mining-discovery theorems of unknown information law are proposed. Function P-sets are a new theory and new method to research dynamic information laws for information systems.

关键词： function P-sets dynamic characteristics law characteristics law sptitsynthesis law discovery

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螺旋桨桨叶流固耦合动力分析与试验研究

螺旋桨桨叶流固耦合动力分析与试验研究

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作者：娄本强大连理工大学

学位级别：硕士

The prediction of vibratory excitation forces that are induced by the propeller is one of the most important tasks for the ship engineers and researchers. These forces are transmitted to the poop of the hull;the propeller produces the excitation to the hull, so the propeller structure can be regarded as the vibration source. The dynamic characteristics of the propeller should be study at first in the semi-immense water, and especially the hull surface boundary effect. In this thesis, the emphasis on the effect of the ship hull surface acts as the flexibility and rigid boundary, which can influence the fluid-structure coupling vibration result of propeller, relative to the effects of pressure release sea-surface. Both experimental and computational means can be used to assist the client in judging the propeller design to respect to predict its dynamic characteristics.FEM was applied to solve the dynamic characteristics, prior to accepting the FE results as representative of a correct solution useful for design purposes. The finite element (FE) model of the propeller was conducted for natural frequencies computation in air and in water, based on the data measured from model-propeller firstly. And the FE model was utilized to analysis the dynamic characteristics of the underwater structure in air and in water through FE code ANSYS. The surface of the water was considered as pressure free, and the volume of fluid was assumed 10 times larger than the diameter of propeller;while the other surface as velocity zero. It can be regarded as semi-immense fluid field. The nature frequency of the propeller in water obtained to compare with that in air. This vibration of propeller was affected by the reduced space between the propeller and the stern hull, very evident in hulls with light displacement. For different boundary, based on the location description of propeller and hull plate, the propeller disc is 0.12d forward of the stern waterline at the pointed condition. The rigid hull surface is used to simulate the bound

关键词： propeller dynamic characteristics fluid-structure coupling complex boundary FEM modal experiment

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dynamic Analysis and Circuit Implementations of a Novel Memristive Chaotic Circuit

Dynamic Analysis and Circuit Implementations of a Novel Memr...

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第36届中国控制会议

作者： Peng Guangya Min Fuhong Ye Biaoming School of Electrical and Automation Engineering

ISBN: (纸本)9781538629185

A new four-dimensional memristive chaotic circuit is proposed by adding a smooth active memristor to the modified Chua’s circuit.The appropriate parameters of the memristor are selected and its characteristics are verified.The dissipativity,equilibrium point set and stability of this new memristive chaotic circuit are analyzed theoretically.The dynamic characteristics of the chaotic system are presented by means of phase-diagram,Lyapunov exponent and bifurcation diagram.Finally,the circuit model of the memristive chaotic system is designed using Multism simulation software.The experimental and simulation results are consistent that proves the feasibility of the system.

关键词： Smooth active memristor Memristive chaotic circuit dynamic characteristics Circuit model

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Maximum-Torque-per-Ampere Control of Interior Permanent Magnet Synchronous Machine Applied for Hybrid Electric Vehicles 2011

Maximum-Torque-per-Ampere Control of Interior Permanent Magn...

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2011 International Conference on Control, Automation and Systems Engineering(CASE)

作者： HUANG Peng MIAO Chang-yun LI Hong-qiang ZHANG Cheng School of electrical engineering and automation Tianjin Polytechnic University School of Information and Communication Engineering Tianjin Polytechnic University

Permanent magnet synchronous machines are known as a good candidate for hybrid electric vehicles(HEV) due to their unique merits. According to the characteristic that d,q-axis inductances are not equa

ISBN: (纸本)9781457708596

关键词： IPMSM Maximum-torque-per-ampere control Saturation effect Vector control Hybrid electric vehicle Permanent magnet synchronous machines Hybrid electric vehicles output torque peak torque maximum principle Engineering interior dynamic characteristics

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商业贿赂犯罪态势及其惩防体系构建

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刑事法学 2013年第8期 49-56页

作者：杨月斌陈国坤

当前，商业贿赂作为具有动态意义的新型经济犯罪活动，其触角逐步伸入社会许多行业和领域，并呈现一系列新的特点和发展趋势。从江苏地区近几年查处的情况来看，此类犯罪案件具有重点领域高发、大案要案增多；犯罪主体多变、作案手法隐... 详细信息

当前，商业贿赂作为具有动态意义的新型经济犯罪活动，其触角逐步伸入社会许多行业和领域，并呈现一系列新的特点和发展趋势。从江苏地区近几年查处的情况来看，此类犯罪案件具有重点领域高发、大案要案增多；犯罪主体多变、作案手法隐秘；群体犯罪加剧、期货性质凸显；职务犯罪突出、窝案串案交织等动态特点。同时表现出发案领域拓展、行业特征明显；组织程度提高、侵害对象模糊；关联犯罪增多、社会危害更烈等发展趋势。根据当前商贿犯罪的动态特点及发展趋势，应建构教育、制度、监督并重的防治商贿犯罪长效机制，从源头上防治商腐现象的滋生蔓延。

关键词：商业贿赂犯罪江苏地区动态特点发展趋势惩防商业腐败体系 commercial bribery crime Jiangsu Province dynamic characteristics development trends the punishment and prevention system against business corruption

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中国城市群的发育现状及动态特征

区域与城市经济

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区域与城市经济 2014年第8期 9-16页

作者：叶裕民陈丙欣

以城市群为主体的城市化空间战略是中国长期探索与实践的结果。按照城市群发育程度，由高到低可以划分为都市连绵区、成熟城市群、潜在城市群三类。当前中国已形成“4+8+12”的城市群级别结构，即4个都市连绵区、8个成熟城市群、12个潜... 详细信息

以城市群为主体的城市化空间战略是中国长期探索与实践的结果。按照城市群发育程度，由高到低可以划分为都市连绵区、成熟城市群、潜在城市群三类。当前中国已形成“4+8+12”的城市群级别结构，即4个都市连绵区、8个成熟城市群、12个潜在城市群，在空间分布上构成了中国“准菱形”的城市群架构。对比2010年和2000年的城市群发育状况可发现，城市群地区是中国经济、人口、就业的核心聚集区域，但经济聚集程度有所下降，人口和就业的聚集程度则不断增强。

关键词：城市群发育动态特征　　urban agglomerations development dynamic characteristics

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新一代低温液体中型运载火箭

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Aerospace China 2021年第2期22卷 3-13页

作者： CHEN Xiaofei YU Long YUAN He ZHAO Yongzhi SONG Zhengyu ZHANG Tao Beijing Institute of Astronantical Systems Engineering Beijing 100076 China Academy of Launch Vehicle Technology Beijing 100076

The maiden flight of LM-8 performed perfectly on December 22,2020.The design concept of modularization,seriation and combination has been perfectly exhibited in LM-8.The four main technical innovations,including rapid integrated design based on modularization,engine thrust regulation,modal parameters acquisition technology based on numerical simulation,and flight load control,were verified during the maiden flight.LM-8 is now positioned to be the main force in China’s medium launch vehicles for commercial launch.In the future,the mission adaptability of LM-8 will be improved to provide efficient and low-cost launch services.In addition,new technologies to allow repeated use and autonomous flight will be validated.

关键词： LM-8 modularization thrust regulation dynamic characteristics load control

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我国财政政策非线性效应的实现机制及动态特征研究

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财政与税务 2015年第4期 44-55页

作者：储德银李善达

本文基于财政调整时期的内生划分方法，采用STR模型对于我国1980-2012年间财政政策非线性效应的实现机制与动态特征进行实证分析，结果发现：一是我国财政政策非线性效应主要是经由消费渠道发生，而且是通过影响消费者预期产生。二是财... 详细信息

本文基于财政调整时期的内生划分方法，采用STR模型对于我国1980-2012年间财政政策非线性效应的实现机制与动态特征进行实证分析，结果发现：一是我国财政政策非线性效应主要是经由消费渠道发生，而且是通过影响消费者预期产生。二是财政政策非凯恩斯效应在不同条件下与财政政策工具之间的搭配组合存在一定差异。其中，当基本预算余额/潜在GDP小于临界值-0.0450时，财政收入对居民消费需求存在非凯恩斯效应；反之，财政支出表现出一定程度的非凯恩斯效应。三是财政政策调整的幅度是居民消费需求非凯恩斯效应产生的重要因素，但财政政策调整的组成成分与政府的初始债务规模不是非凯恩斯效应产生的先决条件。本文研究结论不仅可以为政府制定财政政策提供理论依据与决策参考，还有助于改善我国财政政策实践的操作效率和运行效果。

关键词：财政政策非线性效应 STR模型实现机制动态特征　　fiscal policy nonlinear effects STR models implementation mechanisms dynamic characteristics

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平面研削加工にぉける形状精度研究の历史

机械技术史

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机械技术史 1998年 697-700页

作者：吉田喜一都立航空工业高等专门学校机械工学科

Geometric geometric of ground surface using horizontal spindle-reciprocating table type machines are evaluated by shape error as well as size error and surface roughness.It is known from former studies that size error and surface roughness are determined from static stiffness of grinding machines and geometric interference between wheel and work.It is also found that shape error is determined from dynamic characteristics.In this study,the dynamic characteristics of machine tools which affect the shape error are investigated.And then,the improvement mechanism of manufacturing accuracy is considered.

关键词： Surface grinding dynamic characteristics Hollow Rocking mode vibration Tuning fork mode vibration Wheel unbalance vibration Pulsation of hydraulic oil

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dynamic Response of Eccentric Swinging Sheet Transfer Mechanism with Kinematic Pair Clearances

Dynamic Response of Eccentric Swinging Sheet Transfer Mechan...

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International Conference on Electrical Information and Mechatronics(ICEIM2012)

作者： Cai Fang Zhang Jianqing Ma Xiufeng School of Graphic Arts Qufu Normal University School of Optical-Electrical and Computer Engineering University of Shanghai for Science and Technology

To research the influence of kinematic pair clearances on the dynamic performance of eccentric swinging sheet transfer mechanism used in Sheet-fed offset J2108, a dynamic model was established based o

ISBN: (纸本)9783037856901

关键词： Sheet Transfer Mechanism Kinematic Pair Clearances Continuous contact model dynamic dynamic response kinematic pair Coverlets dynamic characteristics paper transport mechanism non-linear characteristic

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