volume 6 ~ issue 8

Memory management concerns the process of managing the computer memory, in particular, the main memory, which is an expensive resource of the computer system. In this study, a mobile agent was developed for monitoring memory usage in a network. Monitoring the memory usage of systems in a network is essential in a multiprocessing and multitasking environment due to fact that some processes invoked at startup or those running on the background can consume physical memory and reduce the available memory in their idle states; this way, they reduce the efficiency of the system. Monitoring memory helps to increase the performance of the
system and enhance the efficiency of the network.................

Keywords - Mobile agent,memory management, network, distributed systems, agent life cycle, monitoring.

A periodic variation of the index of refraction of a fiber optics is known as the Fiber Bragg Grating. It works on the principle of wavelength shifts in response to the modulation of the light source as a result of change in temperature above the reference point. This paper presents the design and analysis of Fiber Bragg Grating Sensor to measure and monitor the temperature change in powerlines for a particular range of temperature. Simulation was carried out on Optisystem to determine the peak reflectivity of the Bragg wavelength. It is seen that a change in the reflected spectrum of light is proportional to the change in temperature as shown in the FBG interrogator.

Keywords - Fiber Bragg Grating, Temperature, Optisystem.

The notion of electronic energy meters has been hosted the power sector to effectively record the energy consumed for billing purposes and also to curtail losses that occurs due to conventional electromechanical energy meters. Although the machinery of e-metering has gone through rapid technological expansions, still there is a demand for an efficient energy management system. This paper presents an efficient energy management system for household purposes using GSM based Automatic Energy meter. This system provides the necessary measurement of power consumption and payment with prepaid billing. It automatically provides prior notification to the consumers, once the recharge amount approaches zero. It also efficiently manages the energy consumption by periodic intimation of consumed power to the customers.

Keywords - Global System for Mobile communication (GSM); Prepaid Meter; Energy Management

A The paper treats the control of production process with production delay. A simple production system with delay is analyzed, where the production of a single product is continuously performed. The Lambert functions are used to solve the governing delayed differential equation of the production process in an analytical form. In the paper, the stability of the production system control is investigated and an analytical stability bound is obtained, whichdecides if the production process can be controlled in the stable area. Analytical results of production process with delay of various size are computed, which reveal an aperiodic or oscillatory character of actual inventory, respectively.Results, obtained by using Lambert function are compared with solutions, computed by Runge-Kutta numerical integration. All comparisons show a perfect matching of both solutions.

Keywords - Production system with delay, Lambert functions, stability bound, oscillatory and aperiodic response.

As a cultural artifact, architecture tends to be something that has a symbol. Other than its decorative function, architecture is a way to communicate meaningful cultural values. The objective of this study is to interpret the meaning based on theory and semiology method within linguistic. Therefore, a study of signification in architecture and how it could be extracted as a symbol then read as texts. Furthermore, the study of semiology theory is used to explore the ideas and concepts, through theory adaptation and redefinition in the architecture system. Based on this approach, Gorontalo vernacular architecture defined as a case study which concepts are extractable.............

Keywords - Denotative, interpretation, conotative, semiotic, vernacular

The growing need for more complicated underground urban systems has resulted to the development of evacuation procedures improvement. In addition, beside the fact that structures with massive public traffic such as mall or metro systems, have improved safety systems and plans, emergencies still occurs. The special and alternative circumstances and conditions, which characterize the underground spaces in contrast to surface constructions, as well as the severity of the consequences if an accident occurs, stimulated the research for prevention and forecast of the consequences.One major event that may affect human health and structure stability is fire. Byproducts of fire influence the evacuation by affecting vital occupants' points such as visibility and physical strain............

Keywords - Railway evacuation, metrotunnel evacuation, tunnel fire simulation, exit routes, evacuation simulation

Classical planning and scheduling theories are limited in satisfying requirements of today's demand driven and competitive organizations. General approach in production scheduling is related to a single criterion minimization while scheduling problems often can require more than one constraint which increases the need of multiple criteria analysis. Besides, sometimes the objectives of the scheduling problem may conflict within each other which makes several theories unusable. In this work, we set up a real conflicting case in an assembly-line production utility based on component assembly and using component production in main-item composition in assembly-line production model..........

Keywords - Conflicting Objectives, WIP cost, Waiting Cost, Assembly Line, Scheduling, Heuristic

Nantun Historic Street which is located at Nantun district of Taichung City in Taiwan is a famous tourist attraction. This area can be defined as around Wanghe Road and Nantung Road intersection. This place was pioneered by immigrants during the Qing Dynasty. Because of the pioneer policy, the farm tool industry became prosper. This place soon became an important path for trading between Changhua and Taichung in Taiwan. After the modernization of transportation system, the old trading path was no longer important. Although the lifestyle changed, this place preserves its own unique culture. This place also still is the worship center of the areas nearby. The people live with the old scenes here...........

Keywords - Route planning, historic street, tourist attraction, design structural matrix (DSM), local culture

This paper addresses with the optimization of two area interconnected power system with the application of Genetic Algorithm, and has been studied in restructured environment with traditional Automatic Generation Control (AGC), for optimization of integral control gains and bias factors by using MATLAB- SIMULINK . The concept of distribution company (DISCO) participation matrix (DPM) is to simulate the possible bilateral contracts between generating companies (GENCOs) and DISCOs which are reflected in the two-area system. The Dynamic responses obtained through the result satisfy the AGC requirements...........

Keywords - Automatic generation control, Area control error, bilateral contracts, Deregulation, Genetic algorithm, Optimization.

This study investigated the effect of air and sun drying methods on the antioxidant capacity of Ocimum basilicum L. leaves. The total antioxidant capacity, nitric oxide scavenging activity, hydroxyl radical scavenging activity, metal chelating activity and ferric reducing power were evaluated using standard spectrophotometric methods against different concentrations (30 to 120μg/ml) of the plant extract and ascorbic acid as reference standard. There was no significant difference in the total antioxidant capacity estimated as ascorbic acid equivalent between the air and sun-dried extracts. A concentration dependent increase in antioxidant capacity was observed in the other assays............

Keywords - Antioxidant capacity, Drying method, Ocimum basilicum L., Plant extract, Spices, Traditional medicine.

Aluminium-7068 in 1 M hydrochloric acid solution was studied by weight loss and electrochemical methods. The results show the inhibition efficiency was found to increase with increasing the concentration of the inhibitor from 50 to 300 ppm. The maximum inhibition efficiency 93.8% was observed in the presence of 300 ppm inhibitor (in case of potentiodynamic polarization). The inhibition action of atenolol was explained in terms of adsorption on the Aluminium-5038 surface...........

Keywords - Corrosion; Aluminium-5038; Hydrochloric acid; Electrochemical studies.

Advances in biotechnology generated wide range of microbial genome and their related protein database. Freshwater cyanobacterium Anabaena PCC7120 sensory rhodopsin, ASR in contrast to classical haloarchaeal sensory rhodopsins interacts with putative soluble transducer, ASRT. The 125 amino acid transducer exists as a soluble protein and is involved in photoreceptor binding. Recombinant DNA tools in biotechnology conventionally support the use of affinity tags for ease of protein purification and subsequent studies. The ASRT exists as a stable tetramer. Both X-ray crystal structure and solution NMR results with ASRT utilizing hexa-histidine affinity tag reveal it as a primarily β-stranded protein We have observed...........

Keywords - Cyanobacteria, Domain of Unknown Function [DUF], Hexa-histidine tag, Oligomeric assembly, SDS-resistant transducer.

The most common types of blasting claim are those due to ground vibrations. The effect of ground vibration during blasting operation in three different quarries in Ekiti state was investigated in this study. 150 questionnaires were used to gather data and information about the occurrence of some ground vibration issues which include: shock wave, dust problem, noise effect, blown roof, wall crack, window shatter and land slide. The results obtained were analyzed using percentage distribution. It was observed that shock wave is the most prevalent effect of ground vibration; its impact is highest at Ikere-Ekiti and lowest at Ikole-Ekiti. About half of the respondents complained about dust problem arising from ground vibration in all the three locations...........

Keywords - Blasting, environment, explosive, ground vibration, quarry, shock wave

In recent times there have been extreme climatic conditions due to climate change. As a result of this, the intensity of rainfall has increased tremendously causing floods in many areas and countries worldwide. It is therefore prudent that such a natural hazard is addressed in a way to reduce the impact it causes on people and the environment. In September / October 2012, it displaced millions of people in Nigeria and submerged several square kilometres of landed area in general and farmlands in particular. Although, the National Emergency Management Agency (NEMA) predicted the occurrence of the flood disaster and advised the relocation of residence from the flood-plain to the high ground, but spatial information pertaining to the areal extent at risk was not made available............

Keywords - Risk, Flood Disasters, GIS, Vulnerability, MODIS

Boron Neutron Capture Therapy (BNCT) is a therapeutic method of treatment for aggressive malignant tumors. Especially this method is used for brain tumor Glioblastoma Multiforme which is nowadays unfortunately still incurable. A key part of BNCT is proper determination of physical parameters of the neutron beam.This paper provides an overview of methods and results from measurement of neutron beam used for BNCT applications. An objective of this study was to determine spatial neutron distribution of epithermal neutron beam of nuclear research reactor LVR-15, Czech Republic. Experimental data for this study were collected using a special positioning device with 6Li + Si detector............

Keywords - Boron Neutron Capture Therapy, Glioblastoma Multiforme, LVR-15, epithermal neutron beam, spatial distribution of neutron field, neutron radiography.

Bioremediation of toxic industrial effluents by engineered processes serves as an effective method to replace the conventional recovery of contaminated soil, surface and ground water bodies and the restoration of same to a stable condition that support life. Plant materials (groundnut shell) activation capability for treating effluent discharge from industries is explored in this paper. Activated Groundnut shell was examined in adsorption of heavy metals such as Copper (Cu), Magnesium (Mg), Iron (Fe) and Chromium (Cr) in an industrial effluent discharge............

Keywords - Bioremediation, toxic effluent, groundnut shell and Sorption capacity.

Construction is a complex and challenging activity owing to the technical advances, tighter regulations and need for effective management of resources for competitive edge. The projects under the industry involve many parties namely the contractors, consultants, clients, suppliers, subcontractors and other project parties.. Studies carried in Kenya have established relationship between; hiring skilled manpower and timely completion of projects, skilled manpower and quality project output, timely release of funds and project completion and supervision style and quality projects. However, none of the studies have considered the relationship between contractors and subcontractor in project delivery which is the area of interest in this study.Further, the government enactment of stiff policies and regulations...........

Keywords - Contractors and subcontractors, factors for selecting subcontractors