共查询到20条相似文献,搜索用时 46 毫秒
1.
郭柏灵 《应用数学学报(英文版)》1994,10(4):419-433
ONGLOBALSOLUTIONFORACLASSOFSYSTEMSOFMULTI-DIMENSIONALGENERALIZEDZAKHAROVTYPEEQUATIONGUOBOLING(郭柏灵)(InstituteofAppliedandCompu... 相似文献
2.
EXISTENCEANDESTIMATIONOFSOLUTIONSFORSINGULARLYPERTURBEDVECTORIMPULSIVEPROBLEMSXuYuxing(许玉兴)&ZhangXiang(张祥)(AnhuiNormalUnivers... 相似文献
3.
EXISTENCE OF POSITIVE RADIAL SOLUTIONS AND ENTIRE SOLUTIONS FOR QUASILINEAR SINGULAR BOUNDARY VALUE PROBLEMS 总被引:2,自引:0,他引:2
EXISTENCEOFPOSITIVERADIALSOLUTIONSANDENTIRESOLUTIONSFORQUASILINEARSINGULARBOUNDARYVALUEPROBLEMSYangZuodong(杨作东)&GuoZongming(郭... 相似文献
4.
XIAO LING 《数学年刊B辑(英文版)》1995,(4)
LARGE-TIMEBEHMIOROFSOLUTIONSFORTHESYSTEMOFCOMPRESSIBLEADIABATICFLOWTHROUGHPOROUSMEDIA¥XIAOLING(L.HSIAO)D.SERRE(InstituteofMat... 相似文献
5.
A NECESSARY AND SUFFICIENT CONDITION OF EXISTENCE OF GLOBAL SOLUTIONS FOR SOME NONLINEAR HYPERBOLIC EQUATIONS 总被引:2,自引:0,他引:2
Zhang Quande 《数学年刊B辑(英文版)》1995,16(4):461-468
ANECESSARYANDSUFFICIENTCONDITIONOFEXISTENCEOFGLOBALSOLUTIONSFORSOMENONLINEARHYPERBOLICEQUATIONS¥ZHANGQUANDE(DepartmentofMathe... 相似文献
6.
(Institute of Applied Mathematics Academia Sinica Beijing ).(Current address: Department of Mathematics Hebei Teacher's College Shijiazhuang ). 《高校应用数学学报(英文版)》1995,(3)
ACLASSOFTRUSTREGIONMETHODSFORLINEARINEQUALITYCONSTRAINEDOPTIMIZATIONANDITSTHEORYANALYSIS:I.ALGORITHMANDGLOBALCONVERGENCEXIUNA... 相似文献
7.
WU SHENGJIAN 《数学年刊B辑(英文版)》1994,(4)
DISTRIBUTIONOFTHE(0,∞)ACCUMULATIVELINESOFMEROMORPHHICFUNCTIONS¥WUSHENGJIAN(DepartmentofMathematics,BeijingUniversity,BeiJing1... 相似文献
8.
GLOBALBEHAVIOUROFTHESOLUTIONSOFACLASSOFTHREE-DIMENSIONSALCOMPETITIVESYSTEMChengChunChorLitwin(HongKongInstituteOfEducation)Ab... 相似文献
9.
XIONG YUE-SHAN 《高校应用数学学报(英文版)》1994,9(2):153-167
THE ERRORS ESTIMATION OF THE CHEBYSHEV SPECTRAL-DIFFERENCE METHOD FOR TWO-DIMENSIONAL VORTICITY EQUATIONTHEERRORSESTIMATIONOF... 相似文献
10.
卢国富 《应用数学学报(英文版)》1996,(3)
EXISTENCEANDUNIQUENESSOFGLOBALSOLUTIONFORCERTAINNONLINEARDEGENERATEPARABOLIC SYSTEMSLUGUOFU(卢国富)(DepartmentofMathematics,Puti... 相似文献
11.
MARÍA EVANGELINA ALVAREZ SILVIA DI MARCO KATRIN ERDLENBRUCH MABEL TIDBALL 《Natural Resource Modeling》2016,29(3):353-373
In this paper, we study the optimal solutions of a model of natural resource management which allows for both impulse and continuous harvesting policies. This type of model is known in the literature as mixed optimal control problem. In the resource management context, each type of control represents a different harvesting technology, which has a different cost. In particular, we want to know when the following conjecture made by Clark is an optimal solution to this mixed optimal control problem: if the harvesting capacity is unlimited, it is optimal to jump immediately to the steady state of the continuous time problem and then to stay there. We show that under a particular relationship between the continuous and the impulse profit function, the conjecture made by Clark is true. In other cases, however, it is either better to use only continuous control variables or to jump to resource levels which are smaller than the steady state and then let the resource grow back to the steady state. These results emphasize the importance of the cost functions in the modeling of natural resource management. 相似文献
12.
余家荣 《数学物理学报(B辑英文版)》2012,(5):1719-1726
Clarify some classical results and their proofs on the distribution of values of simple Taylor series and extend them to multiple Taylor series. 相似文献
13.
Cantor dust is a classical fractal set .It is very important to compute its Hausdorff measure.In this Paper,we obtained the expression and approximation of Hausdorff measure of Cantor dust through the analysis of interpolation function of a certain of mass distribution defined on Cantor dust. 相似文献
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15.
本文利用上下解方法得到了带Volterra型积分算子的非线性边值问题,u^n=f(t,u,u′,Tu),a1u(0)-a2u′(0)=A,b1u(1)+b2u′(1)=B解的存在性和唯一性。 相似文献
16.
§1 IntroductionIn[1],wehaveintroducedtheconceptoftheGclassoffunctionsintheparabolicclass,andhaveprovedtheHldercontinuityofthiskindoffunctions.Theintroductionoftheconceptcontributestotheproofoftheregularityandexistenceofthesolutionforthefirstboundaryvalueproblemofparabolicequationindivergenceform.Here,weconsidertheapplicationsoftheGclassoffunctionsintheparabolicclasstothefirstboundaryvalueproblemofparabolicequation.Asweknow,ithasreceivedextensivestudyforthefirstboundaryvalueproblemofthefoll… 相似文献
17.
严国政 《数学物理学报(B辑英文版)》1997,(2)
1IntroductionInthispaper,westudythefollowingnonlinearpartialdeferentialequationwherea(20)andp(>1)areconstants.(z,Vu(t,x))isthescalarOfxandVu(f,x),i.e.nx=(xl,...tx.),y=(yi,'',ye)then(x,y)=Zfiji.Withoutlossofgenerality,wetarei=1a=1.Thepurposeofthispaperistwo-fold.Firstweprovetheealltenceofglobalsolutions(Theorem2.1),thenweshowthatthereedestsapositivesolutionwithzeroinitialvalueinW','(Theorem1.1),thusthenon-uniquenessisestablishedwhentheinitialvalueiszeroinWI,a(R").Theorem1.1canberegardedas… 相似文献
18.
Guillermo A. Mendoza 《Natural Resource Modeling》1988,2(4):653-667
This paper describes a nonlinear programming model combined with a binary search technique that systematically searches for the minimum value of a given objective within the nondominated solution set. The procedure provides a way of determining the range of efficient target levels for any multiobjective planning problem using information contained in the pay-off table. The method is illustrated using a numerical example. 相似文献
19.
本文根据高校系资料室的实际工作情况,应用系统分析方法研究如何提高服务质量和管理水平,以充分发挥系资料室的作用。 相似文献
20.
广义Liénard系统的同宿轨族的存在性 总被引:1,自引:1,他引:0
本文研究广义Lienard系统解的一些定性性质,证明了(E)至多存在一个最大椭圆扇形,并获得系统(E)的轨线趋于原点及存在同宿轨族的充要条件. 相似文献