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81.
The compound negative binomial model,introduced in this paper,is a discrete time version.We discuss the Markov properties of the surplus process,and study the ruin probability and the joint distributions of actuarial random vectors in this model.By the strong Markov property and the mass function of a defective renewal sequence,we obtain the explicit expressions of the ruin probability,the finite-horizon ruin probability,the joint distributions of T,U(T-1),|U(T)| and 0≤inn相似文献
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Jun Shen 《International Journal of Non》2011,46(9):1177-1190
There exist many types of possible periodic orbits that impact at the walls for the inverted pendulum impacting between two rigid walls. Previous studies only focused on single impact periodic orbits and symmetric periodic orbits that bounce back and forth between the two walls. They respectively correspond to Types I and II orbits in the Chow, Shaw and Rand classification. In this paper we discuss two types of double impact periodic orbits that have not been studied before. The equations need to be solved for double impact orbits are transcendental and it is very hard to see the structure of the solutions. Consequently the analysis of double impact orbits is much more difficult than that of Types I and II orbits. A combination of analytical and numerical methods is employed to investigate the existence, stability and bifurcations of these orbits. Grazing bifurcations, which do not present for Types I and II orbits, are also observed. 相似文献
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Li Jun-Qian Huang Da-Ping Lin Chi-ChangDepartment of Chemistry Fuzhou University Fuzhou Fujian China. State Key laboratory of Structural Chemistry ChinaZheng AnFujian Institute of Research on the Structure of Matter Fujian . China 《结构化学》1993,(5)
<正> In this paper, we propose a new type of bond, continuous multi-centered d-pn bond on the basis of the Extended Huckel Tight-Banding Calculation and SCC-EHMO calculation for TaPtTe5 and its iso-structural compounds with infinite continuous structrue. The results show that the d-pπbonds which are mainly responsible for the metallic properties are very strong and dispersive. The ΔE, the energy gap between half-filled band block and the unoccupied band block is closely related to the conductivity. The conductivity of TaPdTe5 and NbPtTe5 is predicted. The perturbations between Te atoms in intralayer and interlayer are discussed. 相似文献
87.
Dao Rong LI Ling Na SUN Chang Wen HU 《中国化学快报》2006,17(8):1089-1092
TiO2 is widely used as photocatalyst because of its optical and electronic properties, low cost, chemical stability, non-toxicity and applicability to the treatment of a large variety of pollutants1. The activities of photocatalyst were influenced by the … 相似文献
88.
We propose a Lyapunov-function-based control for the stabilization of the under-actuated Furuta pendulum. Firstly, by a suitable partial feedback linearization that allows to linearize only the actuated coordinate of the system, we proceed to find a candidate Lyapunov function. Based on this candidate function, we derive a stabilizing controller, in such away that the closed-loop system is locally and asymptotically stable around the unstable vertical equilibrium rest, with a computable domain of attraction. 相似文献
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