【摘 要】
:
Inverse problems have found wide applications in industry and many modern technique areas such as material sciences,nondestructive test and imaging process,with the essential difficulties of ill-posed
【机 构】
:
Southeast Univ. Fudan Univ.
论文部分内容阅读
Inverse problems have found wide applications in industry and many modern technique areas such as material sciences,nondestructive test and imaging process,with the essential difficulties of ill-posedness.There are different ways to the modeling of inverse problems,among which the inverse problems based on partial differential equations occupy an important position.In this minisymposium,we will organize several talks covering inverse scattering,inverse boundary value problems,inverse source problems,abnormal diffusion process and imaging process.These problems are described by elliptic and parabolic equations.The related mathematical theory and inversion algorithms will be discussed,dealing with the ill-posedness and nonlinearity of the corresponding problems.
其他文献
本文以偏光显微镜(POM),核磁共振氢谱(2HNMR),流变仪和小角 X 射线衍射(SXRD)研究了TX-100/SO&OA/H2O 体系溶致液晶的微结构。研究结果表明,体系中存在层状液晶(LLC)和六角状液晶(HEX)。流变行为的研究表明,该体系中的层状液晶表现出弹性体流变行为,而六角状液晶表现出粘弹性流体行为;六角状液晶的临界应力和平台模量值显著大于层状液晶。
多孔碳泡沫微球具有密度低、比表面积大、稳定性好、吸附性能优异等特性,在吸附与催化、能源存储和药物缓释等领域受到广泛关注和高度重视[1].本论文选择间苯二酚和甲醛为碳源、L-半胱氨酸为氮源,司班80和吐温80为乳化剂、液体石蜡为油相,通过乳液-水热法制得了氮功能化多孔碳泡沫微球,其比表面积为379 m2·g-1,微球直径为1~2 μm.通过引入氮官能基团,优化了多孔碳泡沫微球的表面性能与润湿性能,有
In this work,the optimal control problem for the stochastic logical dynamical system is considered.Based on the semi-tensor product of matrix,we establish a matrix expression of dynamic programming fo
In this paper,a fuzzy inventory model for deteriorating items with time varying demand and shortages under fully backlogged condition is formulated and solved.In which demand increases with time.Short
In this work,the continued iteration is presented and incorporated into the predictor corrector interior point method in order to reduce the number of iterations and consequently the computational tim
硫属化合物的三维开放体系因其结构多样性、多孔性以及在快离子导体、离子交换和可见光催化领域的应用而备受关注.本文采用水热法合成出以富铜团簇[Cu8Sn5S16]4-为堆积基元的三维开放体系A4Cu8Sn3S12(A=Na,K).这两种化合物空间群为Fm-3c.其中富铜团簇[Cu8Sn5S16]4-通过[SnS4]4-四面体相互连接,碱金属离子填于空隙中.将这种富铜三维开放体系应用到可见光催化降解有机
吡唑及其衍生物属于有机含氮配体,具有良好的配位能力和很高的生物活性[1],还能与有机化合物形成大尺寸的富氮杂环配体。三嗪类衍生物由于具有独特的类蝎型配体的配位模式,可以与过渡金属形成具有光学[2]和氧化还原活性的功能配合物,具有潜在的应用价值。我们设计合成了三嗪吡唑类 Co(Ⅱ)化合物[Co(Bpz*eaT)(H2O)2]·(H2L)2·(H2O)2,并通过 X-ray 单晶衍射测得了该化合物的晶
我们合成了九种新的镧系化合物[Ln(OPPh3)2(phen)(NO3)3](1-5)(OPPh3=三苯基氧化膦,phen =1,10-邻菲啰啉,Ln=Ce,Gd,Tb,Ho,Eu)and [Ln(OPPh3)2(C2H5OH)(NO3)3](6-9)(Ln=Tb,Ho,Er,Tm)。我们对这些化合物进行了红外、元素分析、X射线衍射、荧光、热重和核磁表征。化合物1-9都含有一个稀土离子和三个硝酸根
Freeway travel time prediction models have been proposed in literature,but identification of important predictors has not received much attention.Identification of important predictors reduces dimensi
In this talk,we investigate an interior Helmholtz inverse source problem with multiple frequencies.By implementing sharp uniqueness of the continuation results and exact observability bounds for the w