Need Analysis: Portable Web Server Development Kits for Teaching and Learning

A Portable server is the combination of popular web server software, namely Apache, MySQL, PHP and PhpMyAdmin. With a portable server, users can develop and display a developed website anywhere at any time as all web server configurations have been installed on the storage drive. Portable servers are ideal for displaying the offline version of the website anywhere when developing a website. Using a mobile server as well, users do not need hosting that requires complicated configuration and can be used to run tests before putting the website online. This study aims to obtain preliminary findings on building portable web server development kits for the teaching and learning process.

Underwater Gripper using Distributed Network and Adaptive Control

Underwater identification and grasping of objects is a major challenge faced by the marine engineers even today. Nowadays, almost all underwater operations are either autonomous or tele-operated. In fact remotely operated vehicles (ROVs) are used to deal with inspection tasks and industrial maintenance whenever there is need for intervention. However, the field of autonomous underwater vehicle (AUV) is a blooming filed with research involving proper moving base control and forces interacting which leads to complicated configuration. Hence the presented work is focused implementation of end-effector with appropriate control and signal processing resulting in autonomous manipulation of movement under water.

SIGNAL FADING IN LAND-SATELLITE COMMUNICATION LINKS

The work considers effects of fading phenomena on signal data transmitted through the land-satellite communication links, accounting mostly for LEO satellite, as most complicated configuration of the satellite links. Based on the selec­ted, among other statistical and physical, model of fading effects prediction the pro­bability of fading phenomena in land-satellite communication links is analyzed for three cities in Israel, small, medium and large, and is compared with the results obtained by other authors above the Copenhagen, Stockholm and in England.

Research on Modeling and Simulation of Engine-Generator in the Electric Drive Vehicle

Since the complicated configuration and nonlinear nature of the internal combustion engine (ICE/engine), it’s difficult to modeling with dynamic characteristic. Aimed to this problem, a method which associates testing data with control theory for engine is presented. For the engine output is always link up generator in the hybrid electric drive vehicle, the work looks them as a whole and establishes the simulation model of engine-generator based on BP neural network and inertia element. The approach of how to computer parameters are introduced detailed. The simulation and experiment results indicated that the model’s performance data is consistent with the actual engine-generator very well.

Numerical Analysis of Composite Wind Turbine Blade Considering Failure Behavior

The paper studies the failure of the 3-D complicated configuration composite turbine blade by applying failure criterion. This failure criterion considers three kinds of different failures. They are matrix tensile/compressive failure, fiber- matrix shear failure and fiber failure. By Using FEA software ABAQUS, the stiffness degradation and failure behavior of the turbine blade of composite structure were studied. The failure and stiffness degradation of the two analysis models were conducted by typical numerical examples as well.

Development of the Auto Mesh Generation Program for a Digital Image Correlation Method

Since the method of performing displacement measurement and stress assessment of material by non-contact comes to capture the spotlight, study of the digital image correlation method which adopted the pattern-matching method for asking for displacement by deformation of a surface speckle pattern has been advanced. When the configuration for an analysis was settled in the rectangle and the square region, the whole-field mesh generation was also possible, but when it became a complicated configuration, the background etc. entered and mesh generation was affected. In order to solve such a problem, even if the object for an analysis was a complicated configuration, it aimed at generating a mesh automatically and obtaining appropriate analysis output in the displacement analysis and stress analysis using the generated mesh. In addition, the validity of the result was verified by the comparison with the finite element method. By this study, the convenience and availability of the digital image correlation method was improved remarkably, and it became clear to become a leading tool in health monitoring.

Hydrodynamic performance of coaxial contra-rotating propeller (CCRP) for large ships

Hydrodynamic performance of coaxial contra-rotating propeller (CCRP) for large ships This paper describes a coaxial contra-rotating propeller (CCRP) system to calculate the hydrodynamic characteristics and then obtain the optimum operational condition to install on two different large bulk carrier and VLCC. The method is based on boundary element method (BEM) to obtain the hydrodynamic performance of any complicated configuration such as CRP system, and then the optimum propeller data is obtained by the systematical method at the design condition. We prepared a software package code, namely SPD (Ship Propeller Design), which has model mesh generation, solver and numerical output results. The comparison of the propulsive performance was made between the propeller alone and CRP arrangement. Major finding include good agreement between predictions using the numerical code and experimental data for both ships.