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Direct Force Control of a Rudder with the Action of a Coplanar Waveguide Product Microwave

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Chinese Physics Letters 2011年第9期28卷 178-181页

作者： liu Zong-Kai ZHOU Ben-Mou liu Hui-Xing liu zhi-gang JI Yan-Liang Science and Technology on Transient Physics Laboratory Nanjing University of Science and TechnologyNanjing 210094

We investigate the distribution of electromagnetic body force in a fluid boundary layer produced by a coplanar waveguide(CPW)and focus on the fluid dynamic control effects of a *** electromagnetic body force along the CPW direction can be created by the mutual coupling of landscape orientated electric and magnetic *** CPWs arranged on the rudder's surface,a direct-force-control rudder can be realized by adjusting the microwave *** is also found that a streamwise microwave electromagnetic body force can markedly enhance lift force and suppress rudder vibration,thus improving response time lag ***,navigation stall caused by a large angle of attack can be avoided.

关键词： waveguide Waveguide microwave

Assessment and analysis of strata movement with special reference to rock burst mechanism in island longwall panel

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Journal of Central South University 2017年第12期24卷 2951-2960页

作者： ZHU Guang-an DOU Lin-ming CAO An-ye CAI Wu WANG Chang-bin liu zhi-gang LI Jing Key Laboratory of Deep Coal Resource of Ministry of Education China University of Mining and TechnologyXuzhou 221116 China School of Mines China University of Mining and Technology Xuzhou 221116 China

This study presents a novel approach using theoretical analysis to assess the risk of rock burst of an island longwall panel that accounts for the coupled behavior of stress distribution and overlying strata movement. The height of destressed zone(HDZ) above the mined panel was first determined based on the strain energy balance in an underground coal mining area. HDZ plays a vital role in accurately determining the amount of different loads being transferred towards the front abutment and panel sides. Subsequently, based on the load transfer mechanisms, a series of formulae were derived for the average static and dynamic stresses in the island pillar through theoretical analysis. Finally, the model was applied to determining the side abutment stress distribution of LW 3112 in the Chaoyang Coal Mine and the results of ground subsidence monitoring were used to verify the predicted model. It can be concluded that the proposed computational model can be successfully applied to determining the safety of mining in island longwall panels.

关键词： island longwall panel overburden structure height of destressed zone stress distribution rock burst risk

The Research on Energy Saving Technology Management of Urban Rail Transit

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International English Education Research 2015年第5期 114-116页

作者： Hao liu zhi-gang liu Shanghai University of Engineering Science No.333 Longteng Road Shanghai 201620 China

This paper summarizes the encrgy consumption of rail transit and the current situation of energy saving. Then it puts forward a number of policy support measures on the technology management from several aspects, such as the raft line, traction power supply, energy-saving mode and so on The related research helps urban rail transit enterprises save energy consumption, reduce costs to improve their market competitiveness, as well as to promote the enterprises to fulfill social responsibility and carry out the sustainable development idea.

关键词： urban rail transit technology management energy saving

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浅谈社保档案管理工作中存在的问题

价值工程 2015年第2期34卷 164-165页

作者：刘志刚平泉县人力资源和社会保障局承德067500

社保档案管理做为社会保障体系建设的一个重要方面,在记录信息、改进社保政策、创新社保体系等方面有着重要的参考意义。但是在实际工作中,社保档案管理存在着许多问题。本文在分析社保档案特点的基础上,对这些问题进行探析,并提出了相... 详细信息

社保档案管理做为社会保障体系建设的一个重要方面,在记录信息、改进社保政策、创新社保体系等方面有着重要的参考意义。但是在实际工作中,社保档案管理存在着许多问题。本文在分析社保档案特点的基础上,对这些问题进行探析,并提出了相应的改进对策。

关键词：社会保障档案管理问题对策

FINDINGS OF CHEST RADIOGRAPH AND SPIRAL COMPUTED TOMOGRAPHY IN SWYER-JAMES SYNDROME

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Chinese Medical Sciences Journal 2006年第1期21卷 53-56页

作者： He-shui Shi Fan Yang Ping Han Jin-long Zheng Gan-sheng Feng Yong-hua liu zhi-liang Tian gang liu Department of Radiology Union Hospital Tongji Medical College Huazhong University of Sciences and Technology Wuhan 430022

Objective To evaluate the value of X-ray and spiral computed tomography (SCT) in the diagnosis of Swyer-James syndrome (SJS).Methods A total of 28 patients, 12 males and 16 females, were studied *** ranged from 11 to 57 years, the mean age was 32 *** patients underwent inspiratory chest X-ray films, 5 with expiratory chest films and 1 with ***, inspiratory and expiratory SCT scans were *** SCT findings were analyzed and compared with X-ray *** SCT demonstrated 56 lobes with hyperlucency and diminished *** size of 51 lobes were smaller and 5 were normal.X-ray films showed that hyperlucency was only in 29 lobes, in which 19 lobes were small-sized and the other 10 lobes *** were 56 lobes with air-trapping on expiratory SCT scans, but only 5 lobes with air-trapping on expiratory X-ray *** in 1 case demonstrated bronchiectasis and bronchiolitis *** showed 24 patients with bronchiectasis, 9 patients with tuberculosis, 10 patients with bronchiolitis, and 2 with segmental *** SCT scan is superior to chest radiography in the diagnosis and differential diagnosis of SJS.

关键词： emphysema lung computed tomography Swyer-James syndrome

Research on Fault Tolerant Scheduling Algorithms of Web Cluster Based on Probability

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Wuhan University Journal of Natural Sciences 2005年第1期10卷 70-74页

作者： liuAn-feng CHENzhi-gang LONGGuo-Ping CollegeofInformationScienceandEngineering CentralSouthUniversityChangsha410083HunanChina

Aiming at the soft real-lime fault tolerant demand of critical webapplications at present, such as E-commerce, a new fault tolerant scheduling algorithm based onprobability is proposed. To achieve fault tolerant scheduling, the primary/slave backuptechnology isapplied on the basis of task's self similar accessing characteristics, when the primary taskcompleted successfully, the resources allocated for the slave task are reclaimed, thus advancingsystem's efficiency. Experimental results demonstrate on the premise of satisfying system's certainfault tolerant probability, task's schcdulabi-listic probability is improved, especially, the highertask's self similar degree is, the more obviously the utilization of system resources is enhanced.

关键词： soft real-time system faull tolerant scheduling probabilistic analysis self similar sehedulabilistk probability

CDX2 Inhibits Invasion and Migration of Gastric Cancer Cells by Phosphatase and Tensin Homologue Deleted from Chromosome 10/Akt Signaling Pathway

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Chinese Medical Journal 2015年第8期128卷 1065-1071页

作者： Yong-Qiang liu zhi-gang Bai Xue-Mei Ma Zhong-Tao Zhang Department of General Surgery Beijing Friendship Hospital Capital Medical University Beijing 100050 China

Background： Gastric cancer （GC） is one of the most prevalent malignancies in the world today, with a high mortality rate. CDX2 is a Drosophila caudal-related homeobox transcription factor that plays an important role in GC. Phosphatase and tensin homologue deleted from chromosome 10 （PTEN） is an important tumor suppressor which is widely expressed in normal human tissues. The aim of the study was to determine the relationship and mechanism between CDX2 and PTEN in invasion and migration of GC ***： pcDNA3-CDX2 plasr^lids were transfected into MGC-803 cells to up-regulate CDX2 protein, and small interfering RNA-CDX2 was transfected to down-regulate CDX2. The influence of CDX2 or PTEN on cell migration and invasion was measured by invasion, migration and wound healing assays. Western blotting assay and immunofluorescence were used to detect the expression ofCDX2, PTEN, phosphorylation ofAkt, E-cadherin and N-cadherin. Statistical significance was determined by one-way analysis of ***： The results showed that CDX2 reduced the migration and invasion of GC cells （P 〈 0.05）, and inhibited the activity of Akt through down-regulating PTEN expression （P 〈 0.05）. CDX2 also restrained epithelial-mesenchymal transition of GC ***： CDX2 inhibited invasion andmigration of GC cells by PTEN/Akt signaling pathway, and that may be used for potential therapeutic target.

关键词： CDX2 Epithelial-mesenchymal Transition Gastric Cancer PTEN

Mixed Self-adapting GA Optimal Scheduling Algorithm for a Multiple Resource Job-shop

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International Journal of Plant Engineering and Management 2007年第3期12卷 160-170页

作者： LI Shu-juan LI Yan liu zhi-gang School of Mechanical and Instrumental Engineering Xi＇an Universityof Technology Xi＇an 710048 P. R. China

With an aim at the job-shop scheduling problem of multiple resource constraints, this paper presents mixed self-adapting Genetic Algorithm （ GA ） , and establishes a job-shop optimal scheduling model of multiple resource constraints based on the effect of priority scheduling rules in the heuristic algorithm upon the scheduling target. New coding regulations or rules are designed. The sinusoidal function is adopted as the self-adapting factor, thus making cross probability and variable probability automatically change with group adaptability in such a way as to overcome the shortcoming in the heuristic algorithm and common GA, so that the operation efficiency is improved. The results from real example simulation and comparison with other algorithms indicate that the mixed self-adapting GA algorithm can well solve the job-shop optimal scheduling problem under the constraints of various kinds of production resources such as machine-tools and cutting tools.

关键词： heuristic rule mixed self-adapting GA multiple resource constraint optimal scheduling

A nonlinear model reference adaptive inverse control algorithm with pre-compensator

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Journal of Marine Science and Application 2005年第4期4卷 34-42页

作者： XIAO Bin YANG Tie-Jun liu zhi-gang School of Power and Nuclear Energy Engineering Harbin Engineering University Harbin 150001 China

In this paper, the reduced-order modeling （ROM） technology and its corresponding linear theory are expanded from the linear dynamic system to the nonlinear one, and H∞ control theory is employed in the frequency domain to design some nonlinear system＇ s pre-compensator in some special way. The adaptive model inverse control （AMIC）theory coping with nonlinear system is improved as well. Such is the model reference adaptive inverse control with pre-compensator （PCMRAIC）. The aim of that algorithm is to construct a strategy of control as a whole. As a practical example of the application, the nunlerical simulation has been given on matlab software packages. The numerical result is given. The proposed strategy realizes the linearization control of nonlinear dynamic system. And it carries out a good performance to deal with the nonlinear system.

关键词： ROM technology AMIC algorithm nonlinear system compensator in frequency domain linearization control.