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A HEURISTIC FOR F3/bi= b/C_(max) AND ITSWORST-CASE ANALYSIS

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Systems science and Mathematical sciences 1997年第2期10卷 141-151页

作者： HOU Sixiang (china Marine Development and Research Cented Box 1303-17, beijing 100073, china) DU Donglei (Institute of Applied Mathematics, Academia Sinica, beijing 100080, china)

This paper describes a heuristic for solving F3/bi = b/Cmax scheduling problem. This algorithm first uses the Johnson’s algorithm solving F2Cmax, then, presents revised algorithm to solve F3/bi = b/Cmax. Lastly, an O(n log n) time heuristic is presented which generates a schedule with length at most 3/2 times that of an optimal schedule, for even number n 4. and 3/2 + 1/(2n) times that of an optimal schedule, for odd number n 4. These bounds are tight.

关键词： Two-machine flow shop three-machine flow shop worst-case analysis automated manufacturing system heuristic.

Effects of fundamental structure parameters on dynamic responses of submerged floating tunnel under hydrodynamic loads

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Acta Mechanica Sinica 2009年第3期25卷 335-344页

作者： Xu Long Fei Ge Lei Wang Youshi Hong State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of sciences, beijing 100190, china State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China

This paper investigates the effects of structure parameters on dynamic responses of submerged floating tunnel （SFT） under hydrodynamic loads. The structure parameters includes buoyancy-weight ratio （BWR）, stiffness coefficients of the cable systems, tunnel net buoyancy and tunnel length. First, the importance of structural damp in relation to the dynamic responses of SPT is demonstrated and the mechanism of structural damp effect is discussed. Thereafter, the fundamental structure parameters are investigated through the analysis of SFT dynamic responses under hydrodynamic loads. The results indicate that the BWR of SFT is a key structure parameter. When BWR is 1.2, there is a remarkable trend change in the vertical dynamic response of SFT under hydrodynamic loads. The results also indicate that the ratio of the tunnel net buoyancy to the cable stiffness coefficient is not a characteristic factor affecting the dynamic responses of SFT under hydrodynamic loads.

关键词： Submerged floating tunnel Structural dampBuoyancy-weight ratio Cable stiffness coefficient ,Tunnel net buoyancy - Hydrodynamic load

Optimizing and tracking of temperature control trajectory of batch process

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Optimizing and tracking of temperature control trajectory of...

Si-and alkali-rich melt inclusions in minerals of mantle peridotites from eastern china:Implication for lithospheric evolution

2010 Chinese Control and Decision Conference

作者： Shuqian Lin~1,Jing Wang~2,Liulin Cao~3,Qibing Jin~4.beijing University of Chemical Technology,beijing,china,100029

＜正＞The optimal operation trajectory of batch process is always determined by experienced workers according to rich *** it is time-consuming and *** order to overcome this,a simple and fast mathematical method is given to obtain the optimal trajectory based on process neural network（PNN）,which can extend the traditional artificial neural network（ANN） in the time domain and is especially suitable for the process of serious nonlinear,long prediction and unable be modeled by traditional *** based on the PNN model,a quadratic form performance index function is presented to obtain the optimal operating *** to track the optimal operating trajectory,internal model control system constituted with filter, internal model and controller model based on BP neural network is *** proposed scheme is successfully applied to a mercaptobenzothiazole batch process.

关键词： Process neural network Internal model control Batch process

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science china Earth sciences 2006年第1期49卷 43-49页

作者： FAN Qicheng1, SUI Jianli2, XU Ping2, LI Ni1, SUN Qian1 & WANG Tuanhua1 1. Institute of Geology, china Seismological Bureau, beijing 100029, china 2. Institute of Geology and Geophysics, Chinese Academy of sciences, beijing 100029, china 1. Institute of Geology China Seismological Bureau Beijing 100029 China 2. Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

Minerals of spinel- and garnet-facies mantle xenoliths entrained in Cenozoicbasalts from eastern china (North china, Northeastern china and Southeastern china coastal area)contains lots of melt inclusions. Studies on these melt inclusions show that the glass inclusionsare rich in SiO_2 (60%—68%) and alkalis (K_2O+Na_2O = 5%—11%, especially for K_2O) as well asvolatiles such as H_2O and CO_2 (2%—7%), which belong to dacites and andesites of the high-K calcicalkali series rocks with few shoshonites. High Al and Ca diopside in melt inclusion is the productof melt crystallization at high temperature and pressure, rather than the product ofdevitrification. Results show that these K-rich (in general K_2O > 3%) intermediate-acidic silicatemelt inclusions have characteristics of continent without a genetical link to host basalts and theirphenocrystic minerals. Thus, these trapped melt inclusions represent melts of Mesozoic lithosphericmantle-crust interaction and imply that the continental lithospheric mantle beneath eastern chinahad undergone fragmentation and recreation processes during the Mesozoic and Cenozoic periods. Thisresult undoubtly provides important implication for the evolution of sub-continental lithospherebeneath eastern china. We propose that these Si- and alkalis-rich melts should be responsible forthe mantle chemical heterogeneity underneath eastern china.

关键词： Si- and alkali-rich melt inclusion, mantle peridotite, lithospheric evolution, eastern china.

A new method for adaptive color image filtering

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Chinese science Bulletin 2000年第13期45卷 1230-1235页

作者： JIANG Gangyi, YU Mei & YU Bokang1. Department, of Information & Electronic engineering, Hang/hou University of Commerce, Hangzhou 310035, china 2. Department, of Electronic engineering, Hangzhou institute of Electronics engineering, Hangzhou 310037, china 3. State Key Laboratory on Machine Perception, Peking University, beijing 100871, china Correspondence should be addressed to Yu Mei Department of Information & Electronic engineering Hangzhou University of Commerce Hangzhou China State Key Laboratory on Machine Perception Peking University Beijing China Department of Electronic engineering Hangzhou Institute of Electronics Engineering Hangzhou China

An adaptive color image filter (ACIF) is proposed in this note. Through analyzing noise corruption of color image, efficient locally adaptive filters are chosen for image enhancement. The proposed adaptive color image filter combines advantages of both nonlinear vector filters and linear filters, it attenuates noise and preserves edges and details very well. Experimental results show that the proposed filter performs better than vector median filter, directional-distance filter, directional-magnitude vector filter, adaptive nearest-neighbor filter, and α-trimmed mean filter.

关键词： color image noise analysis locally adaptive filters adaptive color image filter (ACIF).

An Application Of Banking Business Automatic Monitoring System Based On AIX Platform

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An Application Of Banking Business Automatic Monitoring Syst...

Finite element analysis for general elastic multi-structures

The Ninth International Symposium on Distributed Computing and Applications to Business,engineering and science

作者： Jifang An Arts&science College beijing Union University beijing china Jianhua Sun Arts&science College beijing Union University beijing china

Development of banking business leads to system maintenance amount of work increase *** order to discover and resolve the abnormal circumstance in time,and avoid producing greater adverse effects,it is important to apply one method of automatic monitoring,and get alarms and reports *** paper introduces an application on AIX platform which is programmed by SHELL *** can monitor important indexes of banking business front system,give alarms and reports by *** helps to discover and resolve banking business system problems in time,guard against risk,and raise working efficiency.

关键词： AIX IPMSG Banking business Automatic monitoring

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science china Mathematics 2006年第1期49卷 109-129页

作者： HUANG Jianguo, SHI Zhongci & XU Yifeng Department of Mathematics, Shanghai Jiao long University, Shanghai 20024., china Division of Computational science, E-lnstitute of Shanghai Universities, Shanghai Normal University, Shanghai 200234. china Institute of Computational Mathematics, Academy of Mathematics and Systems science, Chinese Academy of sciences, beijing 100080, china Department of Mathematics, Chinese University of Hong Kong, Shatin, N. T., Hong Kong, china Department of Mathematics Shanghai Jiao Tong University Shanghai 200240 China Division of Computational science E-Institute of Shanghai Universities Shanghai Normal University Shanghai 200234 China Institute of Computational Mathematics Academy of Mathematics Systems science Chinese Academy of sciences Beijing 100080 China Department of Mathematics Chinese University of Hong Kong Shatin N. T. Hong Kong China

A finite element method is introduced to solve the general elastic multi-structure problem, in which the displacements on bodies, the longitudinal displacements on plates and the longitudinal displacements on beams are discretized using conforming linear elements, the rotational angles on beams are discretized using conforming elements of second order, the transverse displacements on plates and beams are discretized by the Morley elements and the Hermite elements of third order, respectively. The generalized Korn's inequality is established on related nonconforming element spaces, which implies the unique solvability of the finite element method. Finally, the optimal error estimate in the energy norm is derived for the method.

关键词： elastic multi-structures, finite elements, generalized Korn's inequality, unique solvability, error estimates.

Post-operative cognitive dysfunction is correlated to urine formaldehyde level

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Post-operative cognitive dysfunction is correlated to urine ...

Tbx20 suppresses oxidized low-density lipoprotein-induced oxidative stress,apoptosis and adhesion molecule expression by upregulating PPARγ in human umbilical vein endothelial cells

第十七届国际生物物理大会;第十二届中国生物物理大会

作者： Jiawan Wang~(1,2),Tao Su~(3,4.,Yue Yun~(1,2),Rongqiao He~(3,4. 1.Department of Anesthesiology,Chaoyang Hospital,beijing,china 2.College of Basic Medicine,Capital Medical University,beijing,china 3.State Key Laboratory of Brain and Cognitive {4.,Institute of Biophysics,Chinese Academy of {4.s, beijing,china 4.Graduate University,Chinese Academy of {4.s,beijing,china

Background It has been shown that accumulation of endogenous formaldehyde can lead to human cognitive impairment and memory loss in *** purpose of this study is to assess cognitive outcome in elderly noncardiac surgical patients and to investigate the correlation between endogenous formaldehyde level and post-operative cognitive dysfunction.

关键词： formaldehyde post-operative cognitive dysfunction urine surgery anesthesia

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中国病理生理杂志 2012年第11期 2042-2043页

作者： LI Jian,SHEN Tao,ZHU Yu-ping,YUAN Cao,GUO Hang-bang,MAN Yong,WANG Shu(Key Laboratory of Geriatrics,beijing Hospital and beijing Institute of Geriatrics,Ministry of Health,beijing 100730,china)

AIM:Atherosclerosis is a chronic inflammation disease which is initiated by the endothelial cell *** low-density lipoprotein(ox-LDL)is directly associated with chronic vascular *** transcription factors take part in t... 详细信息

关键词： PPAR LDL in human umbilical vein endothelial cells Tbx20 suppresses oxidized low-density lipoprotein-induced oxidative stress,apoptosis and adhesion molecule expression by upregulating PPAR