In this paper, four routing protocols AODV (Adhoc On demand distance vector), ZRP (Zone routing protocol), DSR (Dynamic Source Routing), and DYMO (Dynamic Manet On Demand), are analyzed and compared by using QualNet simulator on the basis of performance metrics such as Throughput, Average End-to-End Delay, Average Jitter, Total Packets Received, Packet Delivery Ratio, Energy Consumption in tran...

Two types of end milling at partial radial immersion are distinguished in this work, namely; up and down end-milling. They are theoretically given comparative study for a three tooth end miller operating at 0.5, 0.75 and 0.8 radial immersions. 0.5 and 0.8 radial immersion conditions are chosen so that analysis covers situations in which repeat and continuous tool engagements occur while 0.75 ra...

Hazard detection systems are sophisticated tools that can help us detect and prevent environmental disasters. The role of a well designed environmental hazard detection system based on a Wireless Sensor Network (WSN) is to continuously monitor and report the environment’s status by sampling relevant physical parameters (e.g. temperature), but at a rate that can be adapted dynamically to the cri...

Transport protocols in highly-dynamic airborne networks call for adaptive error-control mechanisms to provide efficient error detection and recovery. Due to the highly dynamic nature of these networks and short contact durations between the nodes, the AeroTP protocol uses an adaptive multi-mode mechanism to provide a varying degree of reliable services to the application data. The two fundament...

In this paper, we develop algorithms for estimating transmission distortion in wireless video communication systems. By leveraging the analytical results obtained in our previous paper (Part I), we design low complexity algorithms that are capable of estimating transmission distortion accurately. We also extend our algorithm for pixel-level transmission distortion estimation to pixel-level end-...

The space-domain integral equation method using the generalized scattering matrix description of microwave passive circuits is employed to investigate the mode conversion of a CBCPW open-end discontinuity with unequal side plane widths. The conversion into two additional dominant modes, the c-modelike mode and the -mode-like mode, and into the transmitted microstrip mode from an incident CPW mo...

A long-period grating (LPG) based compact optical fiber sensor working in reflection mode is demonstrated. A technique to make a mirror on the cladding region of a fiber end-face to reflect only the cladding modes was realized by growing a polymeric microtip on the core region of the fiber end-face, by photopolymerization, followed by coating the fiber end-face with an aluminum film. Using the ...

This quasi-experimental study aimed to compare the effect of different modes and item types of multiple-choice (MC) test items on advanced EFL learners’ listening comprehension and perception. To this end, 80 advanced EFL learners, aging 18 to 30, were selected. The participants took a listening test including dialogue-completion and question and answer multiple-choice items presented in writte...

PSICO-A is a new educational system, based on the web, for learning psychology. Its computational architecture consists of a front-end and a back-end. The first one contains a design mode, a reflective mode, a game mode and a simulation mode. These modes are connected to the back-end, which is composed of a rule engine, an evaluation module, a communication module, an expert module, a student m...