Abbreviation: J. Eng. Comput. Innov.
Start Year: 2010
Page 1 of 2, showing 20 records out of 25 total, starting on record 1, ending on 20
DOI: 10.5897/JECI2015.0183[Article Number: 7C47A8159582]
Egypt is one of the countries mostly faced with the problem of China’s fake spare parts used in replacing original components. The spare parts components trade is close to 2.7 billion LE out of 9.3 billion LE, that is, the volume of imported spare parts in Egypt, as announced by the official speaker of the Ministry of Trade and Industry in Egypt. Hence, it can be seen that China’s components adulteration... Read more.
DOI: 10.5897/JECI12.005[Article Number: DC4DD528645]
In this paper, we studied zinc blende (ZB) and wurtzite (Wu) type structured binary solids with conduction electrons and calculated the optoelectronic properties such as high frequency refractive index (n), optical susceptibility (χ), electronic polarizability (αe) and crystal ionicity (fi) using the plasma oscillation theory of solids formalism already employed for ternary chalcopyrite... Read more.
DOI: 10.5897/JECI11.033[Article Number: ED724198648]
Routing in MANET is a critical task due to highly dynamic environment. A routing protocol is needed whenever a packet needs to be transmitted to destination via number of nodes and numerous routing protocols have been proposed for ad-hoc network. In this paper we try to judge the impact of both reactive as well proactive type protocols by increasing the density of nodes in the network, keeping... Read more.
DOI: 10.5897/JECI11.008[Article Number: 1A366B68625]
Spatial joins are used to combine the spatial objects. The efficient processing depends upon the spatial queries. The execution time and input/output (I/O) time of spatial queries are crucial, because the spatial objects are very large and have several relations. In this article, we use several techniques to improve the efficiency of the spatial join; 1. We use R*-trees for spatial queries since R*-trees are... Read more.
DOI: 10.5897/JECI11.053[Article Number: 3D60A928637]
A headline is considered a condensed summary of a document. The necessity for automatic headline generation has been on the rise due to the need to handle a huge number of documents, which is a tedious and time-consuming process. Instead of reading every document, the headline can be used to decide which ones contain important and relevant information. There are two major approaches to automatic headline... Read more.
DOI: 10.5897/JECI11.052[Article Number: A6DB1928614]
In this paper, adaptive filtering algorithm for control of the vibration force applied on the specimen in testing control systems is presented. Application for adaptive filtering especially in Time Domain is associated with a high computational complexity. This complexity is mitigated by using frequency-domain adaptive filtering scheme. In this paper adaptive filtering algorithm in association with Fast... Read more.
DOI: 10.5897/JECI11.050[Article Number: 86B0FA88602]
Optical wireless communication network is gaining acceptance in an increasing number of sectors of science and industry, owing to its unique combination of features: Extremely high bandwidth, rapid deployment time, license and tariff-free bandwidth allocation, and low power consumption, weight, and size. The demand of high signal bandwidth in optical wireless communication networks is growing exponentially... Read more.
DOI: 10.5897/JECI11.024[Article Number: AA5794F8571]
This paper shows an educational software for evaluation of Formal Languages subject. Along with a simple interface of easy understanding and application, it is going to present exercises where the student will visualize the automaton on 3D and shall develop the ‘regular expression’ and in a second moment shall develop a minimization of the automaton interacting directly to the 3D object. For the... Read more.
DOI: 10.5897/JECI11.047[Article Number: BE9CAA78578]
The effects of electrodes geometry and temperature on high frequency transmission characteristics are deeply investigated against semiconductor material based electro-optic modulator devices such as aluminum gallium arsenide (AlGaAs) and optical waveguide parameters. Optimization of the electro-optic modulator parameters, where the effective index plays an essential role in the evaluation of the bandwidth... Read more.
[Article Number: 6AF04858547]
Alternative forms of solid-state motor controllers have been presented in this paper including the effective use of read only memories in stepper motor controller implementations. An innovative low-cost universal stepper motor controller capable of controlling any kind of stepper motor has also been featured. The treatment includes a way of achieving a time-multiplexed control of several stepper motors with... Read more.
[Article Number: 7EACE658558]
There are still a lot of open questions in the field of mobile ad hoc networks (MANETs) and sensor networks. If a topology incurs a large interference, either many communication signals sent by nodes will collide, or the network may experience a serious delay at delivering the data for some nodes, and even consume more energy. So, we reach the conclusion that interference imposes a potential negative impact... Read more.
[Article Number: 1FCF3798500]
Large-volume mesh model faces challenge in rendering, storing, and transmission due to large size of polygon data. Mesh simplification is one of solutions to reduce the data size.This paper presents a mesh simplification method based on feature extraction withcurvature estimation to triangle mesh. The simplified topology preserves good geometricalfeatures in the area with distinct... Read more.
[Article Number: FBDD73C8515]
This paper deals with the internal structure of a commodity futures market. We proposed a mathematical model representing the mechanism of this market. The model shows the links between market components (transactional prices, transactional quantities, open interest) and traders' states (position, position’s average price, potential wealth and realized wealth). Later, we stated and demonstrated some... Read more.
[Article Number: 925EA038473]
A mobile ad-hoc network (MANET) is a peer-to-peer wireless network, that is, nodes can communicate with each other without the use of infrastructure. Besides, nodes are free to join and/or leave the network at anytime, move randomly and organize themselves arbitrarily. Due to this nature of MANET, there could be some malicious and selfish nodes that try compromise the routing protocol functionality and make... Read more.
[Article Number: 321023C8482]
The computational grid has emerged as an attractive platform to tackle various science and engineering problems. One of the challenging issues in the grid associated with the effective utilization of the heterogeneous resources is scheduling. This paper designs and implements a task-scheduling algorithm considering the dynamicity of the resources and the tasks. We explain the concept of queue’s virtual... Read more.
[Article Number: 16AD3258446]
Support vector machine (SVM) is one of the widely used machine learning algorithms because of its salient features such as margin maximization and kernel substitution for classification and regression of data in a high dimensional feature space. But SVMs still face difficulties in handling large datasets. This difficulty is because of solving quadratic programming problems in SVMs which is costly, especially... Read more.
[Article Number: C02C8D78452]
This paper focuses on the problem of congestion control in wireless ATM network based on new Hybrid Scheme proposed by the authors to solve the hand off/hand over problem in ATM-based PCN, which aims to give handover calls high priority over new calls. It presents a non-disruptive handoff protocol with dynamic channel reservation for wireless ATM networks. The analytical results are verified by a simulation... Read more.
[Article Number: 9038FE68418]
Artificial neural networks in general are used to identify patterns according to their entire relationship, responding to related patterns with a similar output of applying absolute values of variables. However, a lot of real data contain some unknown relations of variables. Learning of these dependencies could be a new way of modelling complex systems instead of usual time series prediction based on pattern... Read more.
[Article Number: 814D5998433]
This work aimed to find a proper control strategy to transfer loads using overhead cranes. The proposed control strategy, which is Fuzzy PD-based, should take into account two main factors. First, the time needed to move the payload from the initial pick up point to the destination point that must be minimized. Secondly, the oscillation of the payload must be reduced to prevent hazards for people and... Read more.
[Article Number: 3B86A928340]
Recently, the climatic analysis has been widely studied with artificial intelligence tools. The importance of this topic is based on the environment impact produced for natural variations of the data on a certain ecosystem. In this paper, a first study of meteorological parameters obtained with the Automatic Network of Atmospheric Monitoring (by its abbreviation in Spanish, RAMA) of the Toluca, Mexico, is... Read more.
Page 1 of 2, showing 20 records out of 25 total, starting on record 1, ending on 20