In this paper, we consider a pariicular model of electron-beam-inducedpair excitation. This model takes account of thickness dependence and istherefore considerably more realistic than the constant generation rate assumedwe in a previous paper. The surface recombination velocity (SRVo) n the uppersurface can be varied independently of that on the lower surface. An exactanalytical expression for the Green function (GF) has been found. Funher, generalexpressions for the minoriiy carrier concentration profile (MCCPa), nd hence forthe cathodoluminescence intensity (cu) are constructed merely by convolving theGF with the pair-generation function which is allowed to assume arbitrary form.Here a 'correlation function' form of the pair excitation density is considered whichnon-trivially makes the entire problem be of completely analytical formulation. Theinfluence of various physical parameters, especially the SRV, the diffusion length(oL), and the incident vonage on the MCCP and cu, are discussed in more detailtheoretically and numerically. Explicit analytical forms of the GF, MCCP, and cuare given for various surface-recombination conditions as well as expressionsfor junction current (JC) in the charge-collecting modes. An example is givenof a model prediction in agreement with experimental results which cannot beobtained by previously existing models. It is found that the present formalism canalso be used to tackle the problems of dislocation-or defect-imaging contrastand resolution in thin film materials within some approximation scheme andthat many past models can be reproduced from the present model as specialcases. It is anticipated that the generality of the model which we propose willbe of considerable interest in seeking an understanding of experimental resuns.Quantitative calculations reveal many interesting and even unusual featurescontained in the new model

By a thorough analysis of the contents and scope of the publiclogistics information, a role-based multilevel solution of information sharing isproposed. And by use of metadata theory, the unified description andclassification of the information are done with an aim to achieve heterogeneousdata sharing and exchanging. Based on this, a service-oriented-architecture(SOA)-based system framework is put forward in order to integrate and reuseexisting systems, data and service resources. By introducing web service andbusiness process execution language (BPEL), etc. into the solution, servicesreuse and businesses automatisation are achieved. In this way, the degree ofinformatisation of supply chains management can be deepened, the interactionsbetween governmental departments and enterprises can be enhanced and theprocess of customs e-governing can be accelerated. Finally, an application ofthe solution to a logistics customs clearance information sharing platform isalso given to show its applicability.

In e-commerce protocols, malicious participantsmisbehave on their benefits. There is some work in analysisthe application-protocols but little similar work about thefoundation-protocols. To fill the gap we use semi-regularentities to denote the entities different from penetrators thatparticipate in the protocol on behalf of themselves such ascustomers in e-commerce. A method in strand space model isalso presented. After descriptions of hash and Diffie-Hellmanexchange, semi-regular strand and semi-regular node areadded into the model, finally is an attack on the Internet KeyExchange (IKE) protocol as a case.

The Active Queue Management (AQM) strategies are important in Internet congestion control, which bear the PmIlPlD Structure esscntially. But it is hard to configure thc controlling parameters to achieve good tradcoff among a series of,$erformancc objectives. In this paper, we derivc the approximate First Order Lag Plus Delay (FOLPD) model of TCP/AQM and present a guideline to design PIPID, AQM in. the network routers. Both positional and incremental PIIPTDd: implementations arc considered. Simulation results manifest the effectiveness of thc proposed tuning method.

Considered in this paper are the two-person zerosumlinear quadratic differential games. It is shown that thevalue of the game exists if and only if both the upper value andlower value exist. As an consequence, we prove that anothernecessary and sufficient condition for the existence of the valueof the game is the existence of an open loop-open loop saddlepoint. An example is also given where lower value exists butupper value does not exist.