Abstract:Certain characterizations of some nonlinear difference equations having increasing positive solutions are obtained,these characterizations are related to the weighted boundedness of the discrete Hardy operator.
DAI Hong yi , XIAO Ya bin , WANG Tong quan , ZHANG Shu fa
Abstract:The Relativity Theory has been used to study the spreading of charged particle beams propagating in the vacuum of outer space because of its self generated field,a method calculating beam spreading radius in radical spreading of particle beams is present
Abstract:It is proved that frame indifference of strain energy founctions W (F)of a hyperelastic materical implies symmetry of Cauchy stress tensor T,and that frame indifference of T implies symmetry of T.
TANG Xun , YANG Xing guo , LI Xiao fang , HU Zai jun
Abstract:以2，2，6，6－四氯环己酮为原料，在催化剂存在下，合成了N－苯基－2，2，6，6－四氯环己亚胺，通过对催化剂、溶剂用量、反应时间、反应温度等因素的考察，得到了适宜的工艺条件；在n（酮）：n (苯胺）：n（催化剂）＝1：5：1．5（摩尔比），反应温度为10－20℃，反应时间为3．5h手枪扌，收率为80％。
Abstract:The training mean relative error is 0.0263 using different BP artificial neural networks (BP ANN) to the calculation of activity of different systems of polymer solution which contain 12 systems and 613 experiment points.At the same time,the training mea
PENG Jing cui , HUANG Sheng xiang , ZHANG Gao ming , LI Hong jian , QU shu , XU Xue mei
Abstract:Taking single layer poly (p phenylene vinylene)(PPV)thin film light emitting diodes (LEDs) as example,the electric field distribution in PPV thin film and its effect on injection,transportation and combination of carriers are investigated.It helps to b
CHEN Zheng hua , CHEN Gang , YAN Hong ge , CHEN Ding
Abstract:A novel metal and alloy powder production technology is developed in which high velocity jet gas stream rich in solid salt particles is used to disintegrate molten metal and alloy stream into droplets to obtain powder.The technology is briefly termed as s
XIAO Han ning , LI Yu ping , GAO Ji ming , XIANG Jun hui
Abstract:Nanosized Ti(C,N) powder with a particle size of 50~200nm and excellent separability was prepared by an ammono sol gel processing combined with carbothermal reduction using TiO(OH) 2 sol and carbonblack.The powder is composed of a rich carbon and a rich
SHU Xiao lin , HU Wang yu , WANG Ling ling , ZHUANG Bang wei , HUANG Yang chen , SONG Ying dong , XIAO Han ning
Abstract:研究了用化学共沉淀方法分别制备的掺杂Bi,Sb,Co,Cr,Mn和多元掺杂对纳米ZnO粉末晶粒度和相结构的影响，发现经500℃／h热处理后，掺Bi,Mn,Co和Cr的粉末晶粒度没有明显变化，而掺Sb的ZnO粉末晶粒度随Sb含量的增加而减小；掺Bi的粉末除主晶相ZnO外还有BiOCl相，掺Sb的粉末有主晶相和尖晶石相，所掺Mn,Co,Cr均固溶于主晶相ZnO；多元掺杂晶粒度均为30nm，相为主晶相和尖晶石相。
Abstract:Two types of petroleum coke were heated with different maximum heat treatment temperature ( T H,max ),the structure,morphology and graphitization degree of these samples were analyzed by means of XRD,SEM and Raman spectrum.The relation between thei
YANG Jing , REN Cheng qin , XIE Hui min
Abstract:Some tests on the performances of a combustion system of the Benz OM400 series are conducted,and the results show that the system's performances are nearly not affected by the changes in manufacture parameters.Hence the system suits well the mean and high
ZHOU Shui ting , HUANG Hong wu , SHENG Xiao min , CHENG Geng yu , LI Qing
Abstract:Using the principle and method of safety system engineering,the hazard analysis and risk assessment and the main problems of safety design for ordinary grinder are systematically studied.Based on this,the plan of ordinary grinder safety design is offered,
Abstract:According to the characters of the automotive high speed movement,the automotive kinetics simulation and the high speed aerodynamics model are established.And the analysis of the effect of the side wind on the automotive stabilization is presented.
LI Shu tao , TANG Yan , WANG Yao nan
Abstract:One approach to segmentation of flame image in kiln based on color channel fusion is proposed.Three new images are created by every two channels from red,green and blue channel of flame inage.Three training sample sets are extracted from the three images
HUANG Chun , PAN Hua , WANG Lian qun , ZHOU You qing
Abstract:The protection schemes for power capacitor is discussed,and the harm of harmonic on capacitor is analysed.The computer based protection scheme and the operating criterion of protection are presented.Furthermore,the features of soft and hardware of prot
Abstract:The stable robustness of General Automatic Control System and Intelligent Control system is discussed.The stability criterion about General Automatic Control System on the case of stochastic disturbance or limited disturbance is obtained,and it shows tha
YANG Zhao hui , CHEN Jun , YANG Xia , CHEN Xin chang
Abstract:A treatment technology of plasticizer wastewater by Sequencing Batch Reactor is introduced.The results of test prove that the indexes of wastewater after the process are up to the stardard indexes.
DENG Ning hua , CHEN You ming , CHEN Zai kang , ZHANG Ling
Abstract:Two variables, the wall surface heat flux and the temperature difference between the wall surface and the indoor air, are measured?The predictors of the heat transfer coefficient of wall surface are separately extracted from these experimental datum by Ge
SHAO Xu-dong , LI Li-feng , ZHAO Hua , PENG Wang-hu
Abstract:The Hongshan Bridge,which will be completed in the end of 2002,is a 206 m long cable stayed bridg with on inclined pylon and without any back stays.This paper briefly introduce the main characteristics of the Bridge.
XU Shi rong , LI Bin , LI Li wu
Abstract:Water quality may deteriorate before it reaches the users when it runs through the distribution networks.The steady state and dynamic mathematical models used to modeling water quality variation in distribution networks are briefly discussed.A typical nu
CHEN Ji , KUANG Ji shun , ZHANG Da fang
Abstract:A Verilog HDL compiler for ISCAS85/89 Benchmarks as a utility for the study of RTL combinational circuits is introduced.On the basis of the analysis of features of Verilog HDL and RTL description,methods of the construction of the module library and the c
TANG Lian zhang , MENG Zhi qiang , FAN Zhi ping , YANG Wan shan
Abstract:Based on the vector picture (DXF file),using the method oriented object to define and discribe a various of construction graphic object,authors have developed and realized the computer auto recognition of the graphic object in an architectural constructi
Abstract:Based on the quality adaptation mechanism for video playback in the context of unicast and the proxy caching mechanism for VOD system,a proxy caching quality adaptation mechanism is proposed using layered encoding model for realtime streaming media playba
Abstract:The behavior of a risk averse competitive exporting firm which is exposed to revenue risk due to a randomly fluctuating exchange rate is studied.The standard approach by allowing for state dependent utility is extended.Whether the well known separation
WANG Meng jun , DENG Tie jun , ZHU Gao ming
Abstract:Based on the system engineering,the self organizing theory for administration of building market in China is put forward.The application of the self organizing theory is discussed.That the orientation and development of building market should hold to th
