A performance study of routing protocols for mobile grid environment

Integration of mobile wireless consumer devices into the Grid initially seems unlikely due to limitation such as CPU performance,small secondary storage, heightened battery consumption sensitivity and unreliable low-bandwidth communication. The current grid architecture and algorithm also do not take into account the mobile computing environment since mobile devices have not been seriously considered as valid computing resources or interfaces in grid communities. This paper presents the results of simulation done in identifying a suitable ad hoc routing protocol that can be used for the target grid application in mobile environment. The simulation comparing three ad hoc routing protocols named DSDV, DSR and AODV

Cost-effective scheduling analysis through discrete event simulation for distributed systems

Large computing systems where globally distributed can be best characterized by their dynamic nature particularly in terms of resource provisioning and scheduling. Users of the systems normally aim to maximize their own interest when consuming the shared resources. Apart from that, the pro- cessing requirements that submitted by the systems’ users are diverse in their properties (e.g., size, priority). This condition makes the resources in distributed system overwhelmed by heterogeneity of task to be processed; that leads to fluctuation in resource availability. There are researchers’ proposed scheduling algorithms and evaluated through simulation system in order to improve resource availability. It is because the simulation system is able to save cost rather than real test bed experimental. In response to this, we proposed priority-based scheduling algorithm for improving resource availability that developed using discrete-event simulation approach. We de fined several events in the simulation to represent various execution statuses that used to monitor resource state in the distributed systems. Our simulation system successfully gives better performance in terms of waiting time compared than other works that also used simulation as their experimental platform

Factors affecting young Malaysians' intention to purchase green products

Green marketing refers to holistic marketing concept in which it involves production, marketing, consumption and product disposal in a way that is less harmful to the environment.The purpose of this study was to examine the influence of knowledge, perceived value, eco-label, and social influence on the intention of future green products purchasing among young Malaysian.The sample size of this study was 250 students.The results of this study showed that social influence have a relationship with young consumers’ intention to purchase green products, however knowledge and eco-label had no influence. This research brings a better understanding on young consumers’ intention towards future green purchasing in Malaysia

Young consumers’ intention towards future green purchasing in Malaysia

Green marketing is all about marketing products that are considered environmentally safe.The purpose of this study is to examine the influence of price, time, and eco-label, on the intention of future green products purchasing among young Malaysian.In this study 250 questionnaires were distributed.The data was analyzed using reliability test, normality, correlation analysis, and multiple regressions.The results of this study showed that price, and time have a significant relationship with young consumers’ intention to purchase green products, however, eco-label had no influence on consumers’ intention to purchase green products.This research brings a better understanding on young consumers’ intention towards future green purchasing in Malaysia

A new compression algorithm for small data communication in wireless sensor network

Energy consumption is one of the most critical issues in wireless sensor network (WSN). For a sensor device, transmission of data is considered as the most energy consuming task, and it mostly depends on the size of the data. Fortunately, data compression can be used to minimise the transmitted data size and thus extend sensor's lifetime. In this paper, we propose a new lossless compression algorithm that can handle small data communication in WSNs. Using compression ratio, memory usage, number of instructions and execution speed as a comparison parameters, the proposed algorithm is measured against a set of existing algorithms. Two different datasets have been used for this purpose; namely, self-generated dataset and real sensor dataset from Harvard Sensor Library. As a result, the proposed algorithm not only outclasses other existing algorithms but most importantly produces positive compression ratio throughout the whole test where most existing algorithms experience an expansion in data size when dealing with very small data

The Impact of the Deconstructive Trend on the Deviations of Arab Modernists in Some Interpretations of the Holy Qur'an

This research on the impact of the deconstructive trend on the deviations of Arab modernists in some interpretations of the Holy Qur'an represents the latest findings of the minds of the European philosophers who are followed by these Arab modernists. The nature of the research necessitated that I divide it into a preface and two sections preceded by an introduction and followed by a conclusion, so I talked in the preface about the historical depth of the intellectual fertilization between the Arab nation and the West and its negative effects. In the first section, I talked about the deconstructive trend concept, while in the second section I dealt with procedural. Then I showed the deviation of their claims and the applications of this trend, which these modernists mentioned in the conclusion and results, with the references. My method of research was descriptive and analytical. Keywords: deconstruction, modernists, interpretation, trend, deviation

Spectral domain optical coherence tomography findings of the patients with central serous chorioretinopathy

Objectives: In this study, optical coherence tomography (OCT) findings of the patients with a diagnosis of acute or chronic central serous chorioretinopathy (CSCR) were investigated. Methods: Patients with symptoms and signs longer than 3 months were considered as chronic CSCR. OCT findings of acute and chronic CSCR were recorded at admission. Between the groups, following parameters were compared; visual acuity, hyper reflective dots (HRD), subretinal fluid height (SFH) presence of pigment epithelial detachment (PED), status of photoreceptor inner-outer segment (IS/OS) line. Results: When acute and chronic patients evaluated separately, in acute patients accompanied by PED had lower visual acuity and higher SRF height. In patients with chronic CSCR subretinal fluid of patients with PED was greater than the others however there were no statistically significant differences in visual acuity. Presence of HRD had no effect on the average visual acuity SRF height in patients with acute and chronic CSCR. Also IS/OS line integrity had no effect in visual acuity of the patients in our study. Conclusion: Between the groups there was no difference in terms of IS/OS line distortion, presence of HRD, PED. Height of SRF in patients with PED was higher in both groups. In addition, in acute patients with PED visual acuity was also found to be lower. J Clin Exp Invest 2014; 5 (2): 290-29

Free radical scavenging activity of conjugated linoleic acid as single or mixed isomers.

Context: Conjugated linoleic acids (CLAs) are a mixture of positional and geometric isomers of linoleic acid (LA) and believed to have many positive biological activities. Objective: The present study was undertaken to assess the antioxidant activity of cis-9, trans-11 and trans-10, cis-12 as single or mixed CLA isomers at two ratios, 1:6 and 1:13 (trans-10, cis-12/cis-9, trans-11). Materials and methods: A microplate reader was used to determine the free radical scavenging properties of CLAs against DPPH radical in ethanol. Results: The kinetic reactions of CLA-DPPH• showed that all tested CLAs have exerted radical scavenging activities in a dose-dependent manner and observed to immediately react and quench DPPH radicals at all tested levels and no lag phase was noticed in CLA-DPPH• reactions. The median inhibitory concentration (IC50) value for cis-9, trans-11 CLA was observed to be more effective than other tested CLA. Total antioxidant capacity (TAC) of all tested CLAs were less effective radical scavengers as compared to vitamin E and butylated hydroxytoluene, although all tested CLAs were quenched a high amount (P<0.05) of DPPH free radicals. Discussion and conclusion: All tested CLAs have the ability to directly react and quench DPPH free radicals in ethanol. Furthermore, trans-10, cis-12 CLA has greater maximal efficacy than other tested CLAs as free radical scavenger, while cis-9, trans-11 CLA is the most potent isomer to directly react and quench free radicals at low concentrations in the system, suggesting that the free radical scavenging activity of CLA isomers may contribute to their diverse biological activities

Young consumers’ intention towards future green purchasing in Malaysia

Green marketing is all about marketing products that are considered environmentally safe. It involves practicing a lot of activities related to product modification, product packaging, and even advertising. Green marketing also refers to holistic marketing concept in which it involves production, marketing, consumption and product disposal in a way that is less harmful to the environment. The purpose of this study is to examine the influence of price, time, knowledge, satisfaction, eco-label, and social influence on the intention of future green product purchasing among young Malaysian. The measurement of the factors is adopted from past studies for the following variables: price, time, knowledge, satisfaction, eco-label and social influence. The sample size of this study is 250 samples. This study used SPSS 15.0 to analyze the data. The results of this study showed that price, time, and social influence have a relationship with young consumers‟ intention to purchase green products, however knowledge, satisfaction, and eco-label had no influence, discussions of the analysis are provided in the stud