Advanced Materials Research Vols. 791-793

Abstract: Present paper investigates the steady criterion of the forced, isothermal, and incompressible capillary channel flow in both parallel plates and wedge-shaped channel, which has prominent application in liquid management technology in space. One-dimensional refined Bernoulli equation for parallel channel in Rosendahls work is modified mainly on geometric factors to establish algorithms for wedge-shaped channel. Liquid pressure loss theory is applied to explain the physical behavior of the flow collapse and critical volume flux is determined as a function of length of channels. Theoretical analysis of flow in both parallel and wedge-shaped channels demonstrates better liquid management performance in the wedge-shaped channel. Such results may be valuable in the capillary channel design for space liquid transport application.

Abstract: When a fire or other emergency situation occurs, the intelligent evacuation inducible system is an important means for crowd to evacuate or escape. The factors, such as correct choice of escape routes, to overcome the fear psychology and reasonably avoiding obstacles, have big effects on reaching a safe exit for crowd evacuation. In order to verify the effectiveness of the intelligent evacuation inducible system, a "black house" experiment platform is established in this paper. The time of the fire to reach a dangerous moment is obtained by setting different fire scenarios and using the CFAST method. The actual safe evacuation time is also obtained by several evacuation experiments with different groups of people. According to the time criterion, the interaction mechanism of intelligent evacuation inducible system and crowd evacuation behaviors is analyzed.

Abstract: In Anti-lock Braking System (ABS), the traditional method controlled the brake force with logical way and PID, it can not control ABS based on information of road condition, the speed of wheel and the speed of vehicle, it braked with a long distance and was dangerous. So, a optimized algorithm for advanced vehicle Anti-lock Braking System is proposed, gathering information on speed of vehicle, speed of wheel and road condition together to count real-time slip ratio, with Fuzzy Neural Network (FNN),the brake force of four wheels was controlled differently according to the different condition of wheel with slip ratio. The experiment showed that compare with normal algorithm, the stop distance became 20% shorter with this optimized algorithm and the algorithm is very stable.

Abstract: Numerical simulation was conducted to investigate the external flow around airships with different tail layout, with the help of FLUENT 14.5, based on the incompressible Navier-Stokes equation and SST turbulent model. The aerodynamic information of the airships with different tail layout, such as pressure coefficient, torque coefficient and pressure distribution, were analyzed, and the numerical results showed the details of the airship surface flow and changes with different attack angle. According to the results, different tail layout had important influences on the aerodynamics and stability of airship. This will help to understand the aerodynamic characters around the tails of the stratospheric airship, and provide a reference in choosing tail layouts and the stability design of airships.

Abstract: On the Internet, most of media information is transmitted in plaintext. Some others can easily tamper or intercut the information, so there are threats to those information transmitted in plaintext. This paper designs a model of video encryption which uses AES algorithm and the model is based on FPGA platform. The model does the encryption in paralleling on XUPV5-110T development board. The encryption model can ensure the security and integrity of media information during the transmission process between a certain links on the network.

Abstract: Due to real-time video decoding requirements, hardware accelerators for video deblocking filtering has gradually become a research hotspot in recent years. Compared with the traditional deblocking filter hardware accelerators which support only single video coding standard, this paper implemented a deblocking filter structure, which filtering algorithm can be configured to support multiple video coding standards; Using SIMD technology to make filtering data fully parallel computing. This structure is a multi-standard deblocking filter accelerator, supports H264, AVS, VP8 to, RealVideo, four kinds of video coding standards. The clock frequency is 200MHz, and it can be used for real-time filtering of multi-standard HD video processing. Deblocking Filter Algorithm

Abstract: To achieve the scalability and Quality of Service (QoS) of multicast service, a Wide-Sense Circuit Tree (WSCT) based on Aggregated Multicast Tree is proposed. By aggregating multicast traffics of the same class, WSCT can efficiently reduce the forwarding states of routing nodes and then improve the multicast scalability. By using Wide-Sense Circuit (WSC) to transfer data packages, MSCT can also improve the package forwarding efficiency and provide QoS.

Abstract: The population balance equation (PBE) was solved numerically by using the sectional method to investigate the effect of breakage on the agglomeration between bipolarly charged particles. Calculations showed that breakage results in the increase of small particles and the decrease of large particles bipolarly charged, compared to the case with only agglomeration effect. The breakage effects are important when simulating the agglomeration dynamics.

Abstract: Starting with the domain walls changing of magnetization process for the cable tension sensor, the influence mechanism is studied between temperature and magnetization. In this paper, making Jiles-Atherton (JA) model as the theoretical basis and introducing the Curie temperature as additional parameter, a magnetic-thermo coupling model for the magnet elastic cable tension sensor is constructed by analyzing the temperature and the physical parameters of the model, followed that, a mathematical analysis is used for the model as the stress or temperature is changing. Compared the analytical results, the effects of the temperature to magnetization is obvious when the sensors is in magnetization rising or decline stage, and a reasonable magnetization working point not only can reduce the interference but insure the sensitivity to stress changing of the sensor.

Abstract: This paper transfer the area target scheduling problem into maximal coverage problem based on summaring the traditional sovling problem. A MIP model is build based on problem characters; simulated anneanling problem is used to solve the problem. Four neighborhood and tow differentiation mechanisms are designed to fit the study problem, such as offset neighborhood. The relationship between coverage and overlap and division angle is analysised by test data, and algorithm validation and effective is test based on example data.