FINITE RANGE SET WITH TRUNCATED MULTIPLICITY FOR MEROMORPHIC FUNCTIONS ON SOME COMPLEX DISC

In this paper,we consider the truncated multiplicity finite range set problem of meromorphic functions on some complex disc.By using the value distribution theory of meromorphic functions,we establish a second main theorem for meromorphic functions with finite growth index which share meromorphic functions(may not be small functions).As its application,we also extend the result of a finite range set with truncated multiplicity.

启东1972年～2000年白血病发病率分析

[目的]对启东市白血病发病率分布情况作描述分析。[方法]对1972年～2000年白血病作发病率、标化率、截缩率计算 ,χ2 趋势检验。[结果]启东市1972年～2000年白血病发病率为3.56/10万(男4.01/10万 ,女3.12/10万) ;位次居第八位 ,呈显著上升趋势 ;男女性比为1.28∶1 ;10岁以下年龄组发病数占总数比为14.00%(162/1157) ;截缩标化发病率0～14岁为2.14/10万(男2.26/10万 ,女2.01/10万) ,35岁～64岁为4.68/10万(男5.30/10万 ,女4.09/10万) ;髓细胞性白血病发病占最多。[结论]白血病发病率有升高的趋势 。

Research on the Arc Interpolation for the Nonstandard Section Curve of the Piston

The transverse section of piston skirt is not a standard circle and is with high precision. So the section curve should be interpolated through the high accuracy method of circular arc interpolation before NC machining. In order to smooth the connection of adjacent arcs and shorten the NC machining program, an interpolation method based on Chebyshev theory of function approximation is proposed here. According to the analysis of the interpolation error, the algorithm is simple and with high precision. By this way the fewest interpolating circular arc segments can be got, and the manufacture requirement is satisfied with the circular arc interpolating curves.

Absorption Cross Section of Static Einstein-Maxwell Dilation Axion Black Hole for Scalar Particles

The absorption cross section of the static Einstein-Maxwell dilaton axion （EMDA） black hole for scalar particles is investigated. It is shown that the ratio of the absorption cross section of the EMDA black hole to that of the Schwarzschild black hole decreases as the absolute value of the dilaton increases, and it becomes zero as the dilaton tends to its extremal value. It is also shown that the absorption cross section decreases as both the v and the absolute value of the dilaton increase, and it decreases as the mass of the particle decreases.

Extremal Cut-width Problem for Graphs

The problem studied in this paper is to determine e（p, C）, the minimum size of a connected graph G with given vertex number p and cut-width C.

Study on Mobile Object Tracking and Intercept Technology Research

Background difference method[l] is one of the effective paths of improving robot＇ s vision reaction ability, and robots use background difference method to find the moving object in vision range and conduct tracking monitoring of moving objects. Then it uses support vector to conduct learning fitting of moving object, which can effectively predict the moving trend of moving object, and then it fabricates corresponding decision programs to conduct intercept capture of moving objects.

Optimum Determination of Partial Transmission Ratios of Three-Step Helical Gearboxes for Getting Minimum Cross Section Dimension

This paper presents a new study on optimum calculation of partial ratios of three-step helical gearboxes. The chosen objective function is the cross section dimension of the gearbox. In solving the optimization problem, the design equation for pitting resistance of a gear set was investigated and equations on moment equilibrium condition of a mechanic system including three gear units and their regular resistance condition are analyses. From the results of the study, effective formula for determination of the partial ratios of three-step helical gearboxes is introduced. As the formulas are explicit, the partial ratios can be calculated accurately and simply.

Coverage-based cooperative target acquisition for hypersonic interceptions

This paper presents a novel coverage-based cooperative target acquisition algorithm for hypersonic interceptions. Firstly, the difficulties in the hypersonic trajectory prediction are introduced which invalidate the conventionally used predicted impact point based mid-course guidance and seeker acquisition. Secondly, in order to optimally estimate and predict the target trajectory information, the interacting multiple model(IMM) algorithm is used with the constant velocity(CV) model, the constant acceleration(CA) model and the Singer model serving as the model set. The target states are described with the probability density function(PDF) based on the IMM prediction. Thirdly, the interceptor seeker target acquisition model is established which considers the blur edge region of the field of view. The cooperative target acquisition algorithm is designed by maximizing the interceptor seekers cooperative coverage of the target high probability region(HPR). Finally, digital simulations prove the effectiveness of the proposed method and reveal that the real challenge in the hypersonic target acquisition is the poor trajectory prediction accuracy which may further result to the unsteadiness of the interceptor trajectories.

Performance of 3D TPN against true-arbitrarily maneuvering target for exoatmospheric interception

True proportional navigation(TPN) guidance law is widely used for exoatmospheric interception, for its robustness and ease of implementation. The performance of TPN against nonmaneuvering target or the maneuvering target with a specific acceleration had been analyzed before. However, the obtained results are not suitable for the realistic exoatmospheric interception scenario,since the target may maneuver along an arbitrary direction with an arbitrary but upper-bounded acceleration in the threedimensional(3 D) space, which is the so-called "true-arbitrarily maneuvering target" in this paper. With the help of the line-ofsight(LOS) rotation coordinate system, the performance of 3 D TPN against the true-arbitrarily maneuvering target is thoroughly analyzed using the Lyapunov-like approach. The upper-bound of the 3 D LOS rate is obtained, and so is that of the commanded acceleration of 3 D TPN. After that, the capture region of 3 D TPN is presented on the initial relative velocity plane. The nonlinear3 D relative kinematics between the interceptor and the target is taken into full account. Finally, the new theoretical findings are demonstrated by numerical simulations.

Ectopic major transplantation for salvage of upper anct ower extremity amputations

Objective：Ectopic tissue transplantation is not a new idea.Godina and his colleagues pioneered this method in the 1980s.This method is a last resort method of preserving an amputated body part,which consists of banking the amputated segment in an ectopic area and returning it to its native place at a later date.In this article we present our experience with this demanding procedure.Methods：Debridement was the mainstay of this procedure.The stump and amputated part are carefully debrided and the stump was either closed primarily or covered by a flap.The amputated part was transplanted to one of several banking sites in the body and at a later date it will be transferred to its native site in an elective setting.Results：Seven patients meeting the set criteria for ectopic transplantation were enrolled in this study.The overall success rate was about 70%,lower than expected but these are cases of severe crush injury.Although the functional recovery of these patients are very low,all of the successful cases except one could find a job as a janitor or light manual worker.No patient could return to his previous job.Conclusion：Ectopic transplantation of body parts is an accepted method of treatment of severely crushed extremity or finger injuries.In our country an amputee has very little chance of finding a job instead a disabled person can.In addition in Iran cultures amputation is seen as punishment of either the God or the society,so it is not well accepted and many patients persist on saving the limb even with no functional recovery.None of our successful cases could return to his previous occupation but almost all of them could find a job as janitors or light manual workers.