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The next generation of wireless system is expected to provide multimedia, multi class services any time anywhere with seamless mobility and Quality of Service (QoS). In such environment, vertical handoff management plays an important and challenging role. Some of the main functions of vertical handoff management are: to implement appropriate vertical handoff decision to minimize number of unnecessary handoff, to maintain minimum vertical handoff latency for seamless mobility and to provide guaranteed acceptable QoS required for user satisfaction. Thus, in this paper to avoid unnecessary handoff in integrated heterogeneous network we have proposed that the vertical handoff decision depends on coverage area of the network and the speed of the Mobile Node. Application specific cut-off speed for particular coverage range of network during which handoff is beneficial has been determined. Real time applications like HDTV, MPEG-4, and H.261 are considered in integrated heterogeneous network of UMTS (Universal Mobile Telecommunication System) and WLAN. Vertical handoff latency is analyzed for varied network traffic load, types of application and varied speed of Mobile Node. Effect of Mobile Node speed on packet loss is also analyzed. Finally, to satisfy user with acceptable end to end QoS, especially in the presence of heterogeneous integrated networks where every network has individual QoS, an end to end QoS mapping scheme between UMTS and WLAN integrated network has been proposed. The simulation is performed using Network Simulator NS-2 with NIST (National Institute of Standards and Technology) add on module.

Each rapid prototyping (RP) process has its special and unique advantages and disadvantages. The chapter presents a state-of-the-art study of RP technologies and classifies broadly all the different types of rapid prototyping methods. Subsequently, the fundamental principles and technological limitations of different methods of RP will be closely examined. Comparison of the present and ultimate performance of the rapid prototyping processes will be made so as to highlight the possibility of future improvements for a new generation of RP system.

Based on the classical control theory, this paper proposes an adjustable speed motor control model with minimum ripple effect. This feasibility study was conducted and simulated in Matlab using three typical input signals: the unit step, unit speed and acceleration. The simulation results shown that, the minimum ripple controller could ensure the speed of the electromagnetic speed control motor followed the expected speed in the shortest sampling cycle, to achieve the steady-state error of the system to zero. However, it only follows a particular input signal and therefore when the input signals vary, the controllers need to be calibrated separately to follow the signals, hence, with an electromagnetic adjustable speed motor, it is feasible to control a thin coal seam electrical traction shearer with minimum ripple effect.

In the current vessels is commonly used way of heaving line throwing outype, port type, rotary, centrifugal several, but every way heaving line is based on the power, speed is the core of speed strength of throwing project. The crew in the process of throwing by their own power to heaving line heads certain initial velocity. In this paper, through literature, survey, according to the theory of sports biomechanics, mechanics, sports anatomy for theory basis, combining the theory of track and field technique and related process of heaving line throwing discus throwing power points the swimmer is studied. Purpose is heaving line throwing theory; provide certain scientific basis for improving throwing distance.

The transfer part length of the pushing gauge shall be correspondingly increased with the increase of the paper format. According to the principle of tension degree and buffer length, the chain link number N of the laminating machine 1600 is determined. The drive system drawing is drawn through calculation and analysis of tooth number of each part of the laminating machine. Tooth number of each part is calculated through applying the method of continued fractions, and the original drive system drawing is then modified. Speed and correlation of each element are determined through comparison of the speed of laminating machine 1300 and laminating machine 1600.