- Yuan Jinjiang(Department of System Science & Mathematics,Zhengzhou University)
This paper studeies the strong independent number and strong chromatic number ofgraphs. The NP-completeness of strong independent number problem and strong chromatic numberproblem of graphs is proved even for graphs with diameter 3.Some fundamental properties of thestrong independent number and strong chromatic number of graphs are obtained.
1994 03 [Abstract][OnlineView][Download 161k] - Li Gongsheng;Yuan Zhongxin(Department of Systems Science & Mathematical, Zhengzhou University)Xu Zhaochang(Persomel University of Shanghai Automobile Industrial Company)
This paper studies the inverse problem of the nonlinear heat source fot the heat con-duction equation with three boundarv value on the semci-inifinite interval.It teduces the inverseproblem to the integarating equation systems using Green function of the second boundary vaiue andproves local sol uability and uniqueness through the integarating estimates with respect to the Greenfunction and fixed point method.
1994 03 [Abstract][OnlineView][Download 262k] - ZhuZhenxjng(Department of System Science &Mathematics,Zhengzhou University)Deng Yinbei(Department of Science Research,Zhengzhou University)
This paper solves the optimal day operation program of a hydropower station bymeans of multigrade dynamic planning method to design microcomputer real-time control system forobtaining maximum economic efficary.
1994 03 [Abstract][OnlineView][Download 132k] - Pan Xizhi(Teaching Research Group of Mathematics,Xinxiang Medicine College)
Using the methods of coincldence degree,this paper has proved the existence and u-niquness of solutions of two-point boundary value problems for the third and fourth order nonlineardifferential equations.
1994 03 [Abstract][OnlineView][Download 171k] - Wang Fangzong(Department of Electronic Engineering,Zhengzhou University)ChenDeshu(Huazhong University of Science & Technology)
The transient response computation of turbogenerator shaft torsional oscillation isstudied.Using the implicit trapezoidal integration rule, a new approach or algorithm is derived. Fut-thermore,an approximate but very fast computation formulas of turbogenerator shaft torsional oscil-lation is given bv the use of the so-called relaxation method.
1994 03 [Abstract][OnlineView][Download 143k] - Zhou Anming(Department of Computer Science,Zhengzhou University)
This paper ,introduces the seeheim model of inerface andvarious user interface de-scription models of the UIMS.It evaluates the various description models.
1994 03 [Abstract][OnlineView][Download 150k] - WangQin(Department of Computer Science,Zhengzhou University)
This paper presents a fast approach to pattern matching with scaling, which trans-forms pattern matching with scaling into exact pattern matching and implements last camprision instring matching by using simple integer bit operations; the implementation algorithm and its complex-ity analysis are also provided.
1994 03 [Abstract][OnlineView][Download 115k] - Ding Yurong(Finance Section Zhengzhou University)Zhou Chunxiang(Office of President Zhengzhou University)
Acccording to the necessary of financial management in academey,a mcthod of au-to-control and management with microcomputer is introduced to direct against the characteristic tocontrol target of responsible for funds.
1994 03 [Abstract][OnlineView][Download 118k] - Shen Sanguo(Department of Physics,Zhengzhou University)
The electronic wave function which is the function of the P_(Ga) defect energy is de-rived using a tight binding Green function thechnique. The hyperfine interaction constants of the an-tisite phosphorus given by the theory , are in good agreement with experimental results. It is predict-ed qualitatively that the nearest neighbor atoms of antisite phosphorus have a outward relaxationtrend.
1994 03 [Abstract][OnlineView][Download 139k] - Ding zhen(Department of Computer,Nangjing University)Mu Xiaomin(Department of Electronic Engineering,Zhengzhou University)
The computer binocular stereo vision is a effective way for obtaining the depth infor-mation of objects in image.Stereo matching is its key step be tween the corresponding plxel in a pairof stereo image.In the paper, a stereo matching algorithm based on edge feature is presenled. Thematching procedure is bulfilled by extracting edge and checking similatirity and consistence. Experi-ment shows that the algorithm has faster matching speed and higher matching rate. Reconstructionfor the matching result of block images shows that the result is satisfactory and the algorithm is effec-tive.
1994 03 [Abstract][OnlineView][Download 321k] - Zhao Cuiping; Li Jianhua(Department of Mechanical & Electrical Engineering,Zhengzhou University)
By means of improving the drawing method of connection dimension in the techno-logical process and simplifing the procedure of finding the dimension chains,this paper presents anew method to solve process dimension chain with graph theory and diagram. It has practical valuethat the method can be used to solve the complicated procedure dimension of the technological pro-cess in machining.
1994 03 [Abstract][OnlineView][Download 131k] - Wang Zhongyong;Shi Baizhou(Department of Wlectroic engineering,Zhengzhou University)
Based on fundamental theories of centralized control and decentralized management.This paper introduces a microcomputer loopback measurement system for production scheduling ,anddiscuss the architecture of the system,the software function and the methods of the digital commun-ciation. This measurement system is suitable for various middle or a small scale computer control sys-tem used in industrial process.
1994 03 [Abstract][OnlineView][Download 179k] - Wang Junfeng(Department of Electronic Engineering,Zhengzhou University)
Using the way of system simulation to solve higher orders differentical equation,there are fast speed,people and machine contact closely,intilition visual and other advantages.
1994 03 [Abstract][OnlineView][Download 68k] - Shi Dongyang(Department of System Science &. Mathematics,Zhengzhou Umiversity)
This paper presents a new 12-parameter rectangular plate element by using finite ele-ment method with double sets of parameters.It is proved that this element passes through F-E-M-Test and generalized patch Test and it is convergent for general fourth-order plate problems.Someother forms and energy error estimation and L￣2-error estimation are given.
1994 03 [Abstract][OnlineView][Download 126k] - LiHuaien(Department of System Science & Mathematics, Zhengzhou University)Xin Zili(Kaifeng Teacher's College)
This paper discusses the generalization and applications of Harper Method to thecyclic bandwidth. Some cyclic bandwidth of the production of certain graphs are proved.
1994 03 [Abstract][OnlineView][Download 107k] - Ma Ling(Department of System Sciemce & Mathematics,Zhengzhou University)Jiang Huiqin(Department of Mathematics & Mechanics , Zhengzhou Institute of Technalogy)
In the research of bistatic tomography imaging of translating object got a class of gen-eralized Radon transformation. By means of Fourier operator we transform the inversion of the gen-eralized Radon transformation into a first class of Abel's integral equation with a singular and oscilla-tory kernel. By Tikhonov regularization method and some nemerical skill this paper gives a good ne-merical in version of the generalized Radon transformation.
1994 03 [Abstract][OnlineView][Download 115k] - Liu Minying; ZhaoQingxiang; Wang Yudong; Li Xiankui(Department of Materials Science and Engineering,Zhengzhou University)
This paper studies the dynamic mechanical behaviours of carbon fiber(CF)/PF-ⅡNylon composites by means of viscoelastometer in the temperature 0-80℃and frequency 5-500Hz.The results show that the CF has reformed the tensile modulus of the composites, andchanged the stacking density and modes of the nylon matrix molecules. These caused the change ofthe relaxation peak values,widths and temperatures of dynamic mechanical relaxation spectra. Be-side,the results also show that the effect of CF induction on the crystallization of nylon is one of thereasons of the mechanical property differences among the different materials.
1994 03 [Abstract][OnlineView][Download 168k] - Liu Meijun(Department of Chemistry,Zhengzhou University)Zhu Yu; Shao Qiyi(Center of Analasis and Testing,Zhengzou University)
Using the ordinary silica-gel G plate and simple developer-CHCl_3(saturated byformic acid):CH_3COOC_2H_5(10:1.5),the mixtures of the saturate C_2-C_(10) dibasic carboxvlicacids were simultaneously separated and identified through the thin layer chromatography. Further-more,the stable color-developing agent, the alcohol solution of aniline and xylose,was selected toquantitatively determinate the mixtur of C_2-C_8 dibasic carboxylic acide. The recovery rate was96%-105%。
1994 03 [Abstract][OnlineView][Download 123k] - Li Zhongjun; Pang Xitao; Liu Changrang(Department of Chemistry,Zhengzhou University)
The precipitation conditions of vanadium with NH_4 Cl from the leaching solution ofthe roasted vanadium ore with NaCl were studied. The optimal conditions are pH 6.0, the quantityof NH_4Cl,30 g/L,and the churning time, 9 hours especially.In these conditions,the precipitatingrate of ammonium polyvanadate is over 97%。
1994 03 [Abstract][OnlineView][Download 135k] - Li Limin;Wang Guichang(Department of Chemistry,Zhengzou University)
In this paper , Nio-MoO_3/γ-Al_2O_3 water gas shift catalysts had been studied bymeans of magnetic measurements,It was found that the content of active components and the prepa-ration method have significantly influence on sites of Ni￣(2+),simultaneously, the higher activity ofthe catalyst is closely related to the higher concentration of Ni￣(2+) in octahedral sites.
1994 03 [Abstract][OnlineView][Download 153k] 下载本期数据