Advanced Materials Research Vols. 765-767

Abstract: Spacecraft surface charge and discharge is an important reason for the failure of the spacecraft in the space environment. This paper introduces the principle of spacecraft surface charging and discharging , from the spacecraft surface charging discharging phenomenon found to the harm of charge and discharge, elaborated the spacecraft surface charging protection method.

Abstract: In order to solve the confinement problem of liquid metal, permanent magnet sealing is discussed in this paper, and its principle is introduced. Based on calculations, some helpful conclusions are made, which are important for research on hot dip galvanizing process without sink roll.

Abstract: To penetrate into the study of POGO vibration, by taking the LRC equivalent circuit analyzing method, based on two boundary conditions in document [, taking the flow pulse drive into consideration, this paper proposes four boundary conditions specific to the propelling flow system in liquid rockets, and at the same time, complements the mathematic model. Further, by way of network function, under the liquid system flow parameter, this paper infers transfer function expressions, and makes the accurate solution of the natural frequency under every boundary condition. At last, from the statistic point of view, by the method of correlation coefficient, this paper studies the influence that the flow parameter may have on the system natural frequency, and set the major influential liquid flow parameter to the system natural frequency of liquid propelling flow system in liquid rockets.

Abstract: This paper introduces the structure of the single rotor eddy current retarder. The formula of braking torque with single rotor eddy current retarder was deduced by the appliance of the theory about source and field. The design method of single rotor eddy current retarder was put forward . The bench test was carried out, and the test shows that the braking torque of single rotor eddy current retarder can meet the requirement of real car.

Abstract: To verify the system software logic of a newly designed autonomous underwater vehicle and the hardware architecture, data interface and reliability of the intelligent control system, the semi physical simulation platform was established by combining physical simulation of decision layer with virtual simulation of perception and behavior layer. The hardware and software architecture of the simulation platform were explained in detail. The virtual simulations of motion, sensors and physical simulation of intelligent control system were described. Finally, the obstacle avoidance simulation and long voyage simulation tests were conducted, and the platform is important for the success of sea experiments.

Abstract: According to a class of closed surfaces fitting problem which cant be solved by using maximum entropy function under the rectangular coordinate system, a new method of smooth fitting for a class of the spatial convex cavities in the multiply connected domain by some planes: the envelope algorithm of minimum entropy function is promoted to the spherical coordinates system, for every closed areas by which the border of spatial convex cavities construct, separately the suitable control parameter is chosen, the minimum entropy function is used to smooth the spatial convex cavities in the multiply connected domain. The smooth fitting graph can be drawn based on the function. This method can be used in soma fields such as closed surface modeling, mold designing, mold manufacturing and reverse engineering.

Abstract: Based on the need for V_max design of a diesel submarine, and by means of scenarios description of situations among an air-dropped torpedo, a submarine and the torpedo countermeasure system and models construction, the probability of survival under different submarine speeds was simulated and analyzed, the function between the probability of survival and the submarine V_max was provided, and the V_maxs influence on the effect of evading an incoming torpedo and the V_max a diesel submarine should have were also determined.

Abstract: To properly respond the market trends, the manufactory needs efficient production management. Maintenance scheduling is one of the critical factors to maximize the available machine time in the manufacturing process. Besides, other restrictions should be taken under the consideration, which include: sales forecasting, consideration of inventory level and storage capability for product storage. This paper focuses on using the method of operations research to replace the manual process of production scheduling.

Abstract: Multiple targets which closely related to Alzheimer's disease (AD) pathogenesis were selected for pharmacophore models generation and virtual screening in Chinese herbs. The targets comprised Acetylcholinesterase (AchE), muscarinic receptor 1 (M1), γ-secretase and glycogen synthase kinase 3β (GSK-3β). The pharmacophore models, which of AchE inhibitors, M1 agonists, γ-secretase inhibitors and GSK-3β inhibitors, were constructed by distance comparison method. Four testing databases for the evaluation of pharmacophore models were constructed with the active compounds with clearly marked activity on each target. The metric CAI (Comprehensive Appraisal Index) was then used to evaluate and obtain the best pharmacophore models of each target, which were then applied to screen the Traditional Chinese Medicine Database for potential active compounds in Chinese herbs. Four common used herbs were obtained, which contain the active compounds and can act on multiple targets, and were expected to have multiple activity of anti-AD disease.

Abstract: Analysis the influence factors of high-end equipment manufacturing industry technical innovation, divide them into three dimensions which are the internal control factors, internal and external coordination factors and external development factors, establish a 18-indicator-index system, and use system dynamics method to modeling and dynamic simulation, in order to provide theoretical guidance for improving the high-end equipment manufacturing industry technical innovation ability, and promote the development of high-end equipment manufacturing industry.