Archives-April 2015

This paper aims to compare some routing protocols in Mobile ad-hoc network (MANET). A MANET is a dynamic network in which collection of mobile nodes forms a temporary network without using any existing centralized administration or fixed infrastructure. The availability of routes at an instant can increase or decrease due to mobility of nodes. Therefore, the path availability and stability of routes at an instance is an issue in an Ad-hoc network. To support these types of issue in MANET, many routing protocols are designed, such as AODV, DSR, DSDV, FSR, DYMO, LAR etc. In this paper, we analyzed three different types of routing protocols: DSR, DYMO and FSR using QualNet 5.0.2 simulator. Several simulations were conducted in different traffic patterns (CBR and FTP) to analyze the performance of these routing protocols on the basis of performance matrices such as end-to-end dealy, jitter and throughput.

The implementation of instructional materials for foreign language teaching forms the basis of language use providing linguistic input and explicit language practice for learners. In this sense, materials development and design is of paramount importance regarding the needs of the learners in order to keep up with innovations together with the requirements formalized by the rapidly changing needs of an information society. Herein, Turkey, as a developing country, is to redefine its national educational objectives and the curriculum to integrate instructional technologies into teaching. Within the scope of this article, the background information (aims, reasons, influences, institutional structuring) underlying the process of materials development and design within the scope of Ministry of National Education (henceforth MONE) in Turkey along with cross-over educational trends, policy directives and responses to technology has been probed into including the years from 1923 to 2015. Additionally, recent changes in Turkish education system have been scrutinized.

Landfill site choice in an urban region is a perilous subject in the urban planning process because of enormous impact on the economy, ecology, and the environmental health of the region with the growth of the urbanization, larger amount of wastes are produced and unfortunately the problem gets bigger every day. A selection of appropriate waste discarding site is a function of many factors can be involved under the Environment, Planning & Social Functions. GIS based mapping and succeeding image analysis is projected to be done for each of the correlating criteria for each parameter. The fuzzy multi standards decision making (FMCDM) is used to rank diverse land fill sites based on decisions given by a group of experts. The selected site can be more confirmed through GIS request. This paper emphasizes the clarified approach.

Combining ability and nature of gene interactions that contribute to grain yield and its attributing traits of wheat were investigated using 21 bread wheat hybrids developed by crossing 7 commercial varieties in a half diallel mating design. The estimates of variance due to specific combining ability (?2 SCA) were absolutely greater value over variance of general combining ability for yield and yield attributing traits. Thus the results revealed that non-additive genetic variances accomplished an important role in the expression of different characters. The GCA and SCA ratio was less than unity for all the traits. This indicated that non-additive components played relatively greater role in the inheritance of these traits. Thus, use of diallel mating with recurrent selection could provide the better conditions for recombination and accumulation of desirable genes.

Replantation of hands has become common in various institutions. But, many problems remain in our context especially the quality of the preservation and real-time of replantation, making surgical care more difficult and thus undermines functional proof our patients. We report one case of a young patient presented with a total amputation at the wrist joint of the left hand, despite technical problems in our emergency department, replantation was successfully possible with an acceptable functional and aesthetic result.our patient have recovered a useful function in their replanted hand in daily activities and work. A need of early rehabilitation is stressed and these severe injuries require long periods of rehabilitation; for a good functional recovery, social and professional reintegration of these patients.

A wide variety of materials have mechanical friction. This friction plays an important role in determine the mechanical properties and the electrical properties of the matter. The most popular physical theory that is used to describe the physical properties of matter is quantum mechanics. Recently quantum laws found to be incapable of describing the behavior of some new materials like super conductors and Nano materials. This may be attributed to the fact that quantum laws have no terms sensitive to friction. This work aims to derive Schrodinger quantum equation having frictional term. This equation is used to solve the problem of particle in a box. The solution shows quantized frictional energy.

This study seeks to examine the standard components of project management in four knowledge areas of integration, scope, time and quality in IT management projects and with regard to infrastructures in different countries, to specialize those components for implementation in Iranian active IT corporations. Accordingly, using the Fuzzy Delphi Technique, the opinions of experts in this area were collected and a specialized conceptual model based on the mentioned standard components in association with IT management projects was developed. It was also found that, contrary to some industry projects, IT projects can be very diverse. Identification of relatively large weaknesses in the field of quality management in IT projects was the other finding of the present study. Moreover, it was found that most of the IT projects stop before being finished. Finally, the extracted conceptual model was implemented in three reputable IT corporations (the Iran (NOSA) Hardware and Software Corporation, the Hamkaran System Corporation and the Mesbah Energy Corporation, and findings were analyzed based on the Promethee II ranking model.

In the present work the effect of heat treatment on wear behavior of AISI310, AISI253ma and AISI410 Silicon steels are investigated. The chosen materials were heat treated at 8500C and kept at this temperature for a soaking period of 60 minutes, cooled by quenching in air until the room temperature is attained. As-cast materials were also taken for tests for comparison. The wear tests were carried out on above three materials with three parameters viz., velocity, load & time by keeping two of the parameters as constant and varying the other one in each test.

Security challenges have remained a worried concern, as the activities of political thuggery in a form of violence becoming rampant in most societies of Nigeria. The utilization of thuggery in the process of attaining and preservation of political power has become a fashion to most of the politicians. This study tends to examine the implications of political thuggery in Bauchi, Nigeria. Hence, the qualitative method was used to collect data. The study reveals, through the use of thuggery, insurgency, small arms proliferation, violence and incompetent leaders emerge in the society. Eradication of poverty and education programs should be given due attention by the government.

The corrosion behavior of stainless steel (SS) type 304 in 1 M HCl and at different temperatures (25 oC - 55 oC) in presence of different concentrations of heterocyclic organic compounds was studied using chemical (weight loss) and electrochemical (potentiodynamic polarization and electrochemical impedance spectroscopy) techniques. The polarization curves reveal that these investigated compounds act as mixed type inhibitors. Adsorption of these inhibitors on SS surface was found to obey the Langmuir adsorption isotherm. Results show that the rate of corrosion of SS increased with increasing temperature over the range (25 oC - 55 oC) both in the presence and the inhibitors and in their absence and decreases with increasing inhibitor concentration. This indicates that these compounds were assumed to occur via physical adsorption on the steel surface. Activation energies in the presence and absence of these investigated compounds were obtained by measuring the temperature dependence of the corrosion current. The reactivity of these compounds was analyzed through theoretical calculations based on semiempirical theory to explain the different efficiency of these compounds as corrosion inhibitors.