Optogalvanic Properties of the Ion Guide Source in the Recoil Nucleus Selective Photoionization

This consideration is a conjunction of two processes: generation of recoil products and selective detection. A new type of plasma is carried out. The electron energy function distribution of the ion-guide source plasma is calculated and discussed. The properties of a laser ionization scheme detecting recoil atoms are analyzed using an optogalvanic approach.

The Resonant Laser Ionization (RLI) in low temperature currentless plasma, formed by accelerated particle beam propagating through gas, will be used for the above mentioned separation. A tuned dye laser excites the studied atoms and the fast electrons ionize them. This process exceeds in cross-section the ionization from ground state which provides selectivity of IGS. The latter produces ions of almost all chemical elements. It can be used for investigating processes flowing in low temperature currentless plasma which presents a specific interest. These functions impart to the IGS the role of an Optogalvanic (OG) element, to be precise, of hollow cathode discharge used as an OG detector [1].

In this paper the IGS is analyzed as an OG detector in a quasi OG scheme. The investigation is a step simulating the IGS properties. The Electron Energy Distribution Function (EEDF) and the most important processes are analyzed and discussed as a first step in this field. The results obtained contribute to the efficiency of the RLI method.     

非线性半参数模型的虚拟观测法

本文首先介绍非线性半参数回归中常用的补偿最小二乘法,然后基于先验信息将其转化成对此问题的虚拟观测,用虚拟观测与原观测联合,按常规的最小二乘方法求解.最后运用的实例计算结果表明,虚拟观测方法计算的结果一般优于常规的补偿最小二乘结果,基本上可达到理论上的最优解.     

幂环

提出幂环概念,使环的提升更趋合理,建立了幂环的结构定理,并得到了某种条件下幂环同商环的关系。     

拟有理映照的Fatou集

定义了拟有理映照的Fatou集,将有理映照的部分结果推广到拟有理映照,并提出了供进一步研究的问题．     

Geometry and Topology of Spaces of Quasi-constant Curvature

§１．ＩｎｔｒｏｄｕｃｔｉｏｎＬｅｔＮｎｂｅａｎｎ（≥３）－ｄｉｍｅｎｓｉｏｎａｌＲｉｅｍａｎｎｉａｎｍａｎｉｆｏｌｄ，Ｘ∈ＴｘＮａｎｄＣ（Ｘ，θ）＝｛２－ｐｌａｎｅσＴｘＮ；ｔｈｅａｎｇｌｅｂｅｔｗｅｅｎσａｎｄＸｉｓθ｝．（１．１）Ｉｎ１９７８...     

整数规划的渐进强对偶方法

虽然整数规划中经典的Lagrange对偶方法是一个有效的方法，但是由于对偶缝隙的原因它经常不能求出原问题的最优解。该文提出一个用于有界整数规划的指数对偶公式。此公式具有渐进强对偶的特性并且可以保证找到原问题的最优解。它的另一个特性是当参数选择的合适时不需要进行实际的对偶搜索。     

Quasi-interpenetrating network formed by polyacrylamide and poly(N,N-dimethylacrylamide) used in high-performance DNA sequencing analysis by capillary electrophoresis

Quasi-interpenetrating network (IPN) formed by polyacrylamide and poly(N,N-dimethylacrylamide) was designed, synthesized, and tested as a high-performance DNA separation medium by capillary electrophoresis. The performance of quasi-IPN on DNA sequencing was determined by the acrylamide to dimethylacrylamide molar ratio, polyacrylamide molecular weight, and its size distribution. Under optimal operating conditions, quasi-IPN was able to achieve one-color DNA sequencing up to 1000 bases in 39 min, or 1200 bases in 60 min. Its performance was compared with some of the existing commercialized products, such as POP6 from Applied Biosystems and MegaBACE matrix from Amersham Biosciences. By using the ABI 310 Genetic Analyzer, even without optimized base-calling software, quasi-IPN yielded a read length of up to 700 bases of contiguous sequence (50-750 bases) in 35 min with 99.6% accuracy, or 750 bases of contiguous sequence (50-800 bases) in 37 min with 98.0% accuracy.     

Quasi phase matching in two-dimensional nonlinear photonic crystals

We analyze quasi-phase-matched (QPM) conversion efficiency of the five possible types of periodic two-dimensional nonlinear structures: Hexagonal, square, rectangular, centered-rectangular, and oblique. The frequency conversion efficiency, as a function of the two-dimensional quasi-phase-matching order, is determined for the general case. Furthermore, it is demonstrated for two basic feasible motifs, a circular motif and a rectangular motif. This enables to determine the optimal motif dimensions for achieving the highest conversion efficiency. We find that a rectangular motif is more efficient than a circular motif for quasi-phase-matched processes that rely on a single reciprocal lattice vector (RLV), and that under optimal choice of motif dimensions, it converges into a one-dimensional periodic structure. In addition, in a few specific cases we found that higher order QPM can be significantly more efficient than lower order QPM.     

Stochastic decompositions in the M/M/1 queue with working vacations

We demonstrate stochastic decomposition structures of the queue length and waiting time in an M/M/1/WV queue, and obtain the distributions of the additional queue length and additional delay. Furthermore, we discuss the relationship between the stochastic decomposition properties of the working vacation queue and those of the standard M/G/1 queue with general vacations.     

Quasi‐Lipschitz condition in potential theory

The velocity of an incompressible flow in a bounded three‐dimensional domain is represented by its vorticity with the help of an apparently new representation formula. Using this formula we prove a quasi‐Lipschitz estimate for in dependence of the supremum norm of . Our quasi‐Lipschitz bound extends to the case where is represented by any continuous ≠ rot