September 2011
Strength development of mortar and concrete containing fly ash: A review
Among the construction materials; concrete, steel, timber and glass, concrete has gained popularity all over the world due to its durable properties in normal environment and easiest construction procedure. Compare to others constituent, cement performs a vital role for the production of concrete. Due to continuous increasing demand and the cost of cement, recently, the utilization of supplementary cementing materials...
September 2011
Compensation effect of implementation of filters in use of unsuitable collimator in SPECT images
Use of digital filters to improve the visual quality of SPECT images is a well-established technique. The goal of the filtering is to compensate for loss of detail in an image while reducing noise and improving of image quality. In this paper we studied the results of SPECT one and two line sources (contained with Tc-99 m) images obtained by SPECT equipped with unsuitable collimators (Low Energy General Purpose (LEGP)...
September 2011
Local magnitude calibration of Kuwait national seismic network
A magnitude formula is preliminarily developed from Kuwait national seismic network (KNSN) data which is proposed and intended for application by the network in its seismic monitoring activities. This is an adapted local magnitude scale of measurement, which is empirically determined and expressed as: ML = log (A) + 1.43 log (Δ) + 1.0 + Di. The magnitude formula is as a result of applying multiple regression...
September 2011
The accuracy of the absolute NAA method based on the analysis of standard reference materials (SRMs)
The aim of this study was to demonstrate and validate the use of the absolute NAA method, inside the Malaysian nuclear agency (MNA) research reactor, by analyzing the IAEA SRMs; soil-1 and soil-7. The analytical results showed that the deviations between experimental and certified values were mostly less than 10% with Z-score ranging from 0 to 2, and only for few element it exceeds 20%. In general, the results for...
September 2011
Growth of nanostructured CdO by solid-vapor deposition
Cadmium oxide (CdO) nanostructure was synthesized by solid-vapor deposition. Cadmium powder was heated to 1274 K in a tube furnace, and the resultant vapor was carried to the silicon substrate zone by an argon flow with a trace amount of oxygen. Field emission scanning electron microscopy revealed that the product was grass-like of Cadmium oxide nanostructure. X-ray diffraction and energy dispersive X-ray techniques...
September 2011
Gas waste, local or global problem
Production of bricks is one of the most spreaded industries worldwide. At the same time, it is one of the large energy power consumers, where the energy has a large share in the price of product. It is natural that more efficient exploitation of energy has an impact on decrease in cost price making the final product more competitive. An attempt to exploit waste heat energy of smoke emitting gases led to significant...
September 2011
Development of a hovercraft prototype with an aluminium hull base
A study was undertaken to construct an economical and robust hovercraft by using the aluminium Al 6061-T6 (marine). In this study, the stability and ultimate strength of the aluminium Al 6061-T6 was tested to find its stands as the material for the hovercraft hull base development. Structural analysis by using NASTRAN/PATRAN software was carried out to see the suitability and the reliability of the alloy. The...
September 2011
Proximal algorithms for solving mixed bifunction variational inequalities
In this paper, we suggest and analyze some proximal methods for solving mixed bifunction variational inequalities using the auxiliary principle technique. Convergence of these methods is considered under some mild suitable conditions on the bifunction and the operators. Several cases are also discussed. Results in this paper include some new and known results as special cases. Key...
September 2011
On topological covering-based rough spaces
Rough set theory, a mathematical tool to deal with vague concepts, has originally described the indiscernibility of elements by equivalence relations. Covering-based rough sets are a natural extension of classical rough sets by relaxing the partitions arising from equivalence relations to coverings. Recently, some topological concepts such as subbase, neighborhood and separation axioms have been applied to study...
September 2011
Quartic spline method for solving second-order boundary value problems
In this paper, uniform quartic spline polynomial functions are used to develop some consistency relations which are then used to derive a numerical method for approximating the solution and its first, second, third and fourth derivatives of second order boundary value problems. The present method is capable of producing fourth order accurate approximations for the solution, as well as its first and second derivatives,...
September 2011
Analytical solutions for heat transfer flows of a third grade fluid in case of posttreatment of wire coating
The steady flow of a third grade fluid which belongs to non-Newtonian fluid mechanics deserves more attention than it has been to date, because in the nonlinear systems, the literature is scarce. In this paper, we develop a formulation suitable for solution in the case of posttreatment of wire coating containing thermal effects of third grade fluids. The optimal homotopy asymptotic method (OHAM) and regular perturbation...
September 2011
Ontology mapping using bipartite graph
Fast improvement of web technologies have caused a problem of semantic integration between distributed applications. In this respect, sharing and distribution of information are of vital importance for ontologies. Ontologies may be improved by any independent association and still be used by another association. In case an association decides to use an ontology improved by another association, they should make mapping...
September 2011
Cross-layer based security solutions for wireless sensor networks
Wireless sensor networks (WSNs) were often used to collect sensitive data and the entire network was particularly vulnerable to various threats at different layers of the protocol stack. With this in mind, there was need to improve security solutions that were inevitable and advantageous to the successful deployment of the wireless sensor networks. The vast research conducted to provide security solutions against...
September 2011
Artificial bee colony search algorithm for examination timetabling problems
Artificial bee colony is a population-based search algorithm that mimics a natural behavior of real honey bees to find rich food sources to obtain maximum quantity of nectar and share the information of food sources with other bees in the hive. This paper concerns primarily about how to use artificial bee colony to solve examination timetabling problems which it is known as a NP-hard problem. It deals with assigning...
September 2011
Security constrained economic dispatch using multi-thread parallel computing
This paper presents the development of an efficient security constrained economic dispatch using multi-thread parallel computations. One of the main obstacles in wide application of economic dispatch is the slowness of algorithm execution time, especially when a large system is utilized. Aside from the model development to overcome this, we have proposed a technique to perform parallel computing of the problem which can...
September 2011
Design of airport enclosures remote laser intrusion detection and alarm system
An airport enclosures intrusion detection system was proposed. Laser was used as detection means of alarm information in the system, intrusion event and region were detected through various means such as laser signal processing, visual information, information fusion and decision, etc., the alarm will be send to monitor center in time through CAN (Controller-area network) bus network and ethernet. The system has the...
September 2011
Satellite Image Encryption for C4I System
Global command and control system (GCCS-Joint) is a command, control, communications, computers and intelligence (C4I) system which consists of hardware, software, procedures and standards and which provides directory services, enterprise services and security services by exchanging imagery, intelligence, status of forces and planning information. In order to secure this exchange of imagery and information, we need more...
September 2011
Effect of non sway and sway methods for analysis and design of reinforced concrete frames for multi-storey building
This paper investigates the numerical modelling analysis and design of non-sway and sway method for multi-storey reinforced concrete frames. Multi-storey buildings having a height of 57.7 and 23.5 m consisting of 15 storeys' and 6 storeys, respectively have been analysed for non-sway and sway condition by using software STAAD. Pro V8i. Column sizes have been changed in every three storeys interval and beam sizes...
September 2011
Controlling crystallization and morphologies of monoclinic bismuth vanadate (BiVO4) dendrite with enhanced photocatalytic activities
The monoclinic BiVO4 dendrites constructed by Bismuth vanadate (BiVO4) branches with average diameters of about 100 nm have been successfully fabricated by Sodium dodecyl sulfate (SDS) assistant hydrothermal process. The monoclinic BiVO4 dendrites were characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy and transmission electron microscopy. The monoclinic...
September 2011
Bridge architecture in Japan
A bridge is a structure built to span physical obstacle such as a body of water, city, or road, for the purpose of providing passage over the obstacle. Bridges are a unique offshoot of architecture and possess their own associated terms, components and styles. This paper presents the second part of Japanese bridges by investigating architectural aspects of its design. Limited usable land in heavily populated areas of...
September 2011
Improvement of granular soils by low pressure grouting
Permeation grouting is a deep-soil improvement technique in which grout is injected into the voids, fissures and cavities in a soil formation in order to improve resistance to liquefaction, strength and durability and to reduce its permeability and deformability. The objective of this research is to investigate the parameters that affect the strength of cement grouted granular soils through laboratory testing. With this...
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