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.

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

On the basis of a new physical picture universally valid for all condensed matter of the infrared-divergence theory and starting from a non-Markovian process, the author investigates electronic excited-state or exciton transfer in disordered systems. The obtained results indicate that the present picture, which differs from the traditional Markovian-transport picture, is more reasonable and more universal than other existing theories. The theoretical predictions are in good agreement with the experimental investigation.

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.

e, fcc solid solution: we have taken Ni3Al and a Au solute in copper as examples of these systems. Many-body interatomic potentials for these alloys have been used, but modified at small separations to provide suitable descriptions of collisions at near-threshold energies. The properties of point defects associated with a single Au solute atom in a copper matrix are presented, and it is then shown that the threshold energy, Ed, for the Au recoil in this alloy is smaller and has much less orientation-dependence than is found for a Cu recoil in the pure metal. This effect is related to the number of atoms temporarily displaced from their sites during the creation of a stable Frenkel pair. Ed for Al in Ni3Al is much higher than in pure aluminium and similar in size to that of a Ni atom. The stable defect arrangements produced at threshold are in general much more complex than for pure metals, and defects on the Ni sublattices are usually the majority species. A striking effect occurs for 110 recoils along mixed Ni-Al-Ni-Al- … rows, for chains of antisite defects created by replacement sequences break to form two Frenkel pairs for each primary recoil atom.