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28,451 Article Results

Factors Affecting Adherence to Pediatrics Antiretroviral Therapy in Mekelle Hospital, Tigray Ethiopia

10.11591/ijphs.v4i1.4704
Teklemariam Gultie , Tesfay G/Amlak , Girum Sebsibie
The most important factor in the success of HIV treatment is adherence to antiretroviral therapy (ART).The challenge to adherence to ART is particularly serious in Sub-Saharan Africa as the high rates of HIV/AIDS lead to greater numbers of affected individuals. Although long-term good ART adherence has been observed in certain settings of public sectors the magnitude of this challenge in Sub-Saharan Africa remains large and there is evidence for high rates of patient’s poor adherence. Study aimed to assess the factors affecting adherence to pediatrics antiretroviral therapy (ART) among children in Mekelle hospital, Tigray, Ethiopia. A Hospital based cross-sectional study was conducted on 226 children on antiretroviral therapy from May 01 to 30/2014 at Mekelle hospital. Data was collected from care givers of children under 15 years old who are on ART. Of the 226 children under 15 years, 90.3 % reported complete adherence to antiretroviral therapy medications at the regular schedule over the past 7 days. Factors associated with adherence were having male care giver (AOR=2.10[1.01, 7.22]), age of the child (AOR=1.43[1.16, 3.98]) below 5 years and use of first line ART drugs (AOR=2.86[1.54, 3.67]). Over all the adherence of children on ART to their medication in this study is relatively higher as compared to others. However, complete adherence is expected in order to make the drugs effective. Different strategies have to be designed to improve the adherence level.
Volume: 4
Issue: 1
Page: 1-6
Publish at: 2015-03-01

Effect of Shorting Wall on Compact 2×4 MSA Array Using Artificial Neural Network

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/4232
Mohammad Aneesh , Jamshed Aslam Ansari , Ashish Singh , Km. Kamakshi
In this paper, a compact 2×4 microstrip antenna (MSA) array is presented and the effect of inserting shorting wall is optimized with the help of artificial neural network (ANN). An ANN model has been developed for predicting the resonant frequencies with the variation of the height of substrate and shorting wall position. For validation of ANN output, a prototype of 2×4 MSA array is physically fabricated and tested. This validation verifies the proposed antenna for which simulated and ANN results are approximately similar. DOI: http://dx.doi.org/10.11591/telkomnika.v13i3.7089
Volume: 13
Issue: 3
Page: 512-520
Publish at: 2015-03-01

Role of Mothers’ Nutritional Knowledge, Nutritional Factors on The School Performance

10.11591/ijphs.v4i1.4710
JasminAra Farhana , Farhana Akther , Mesbah Uddin Talukder , Md. Ariful Islam , Md. Torikul Islam , Md. Aminul Haque Bhuyan
A cross sectional study was carried out to investigate the effects of mothers’ nutritional knowledge, health and nutritional factors and socio-economic parameters on school performance among class five students of University Laboratory School, Dhaka. All of the eighty students were selected for this study. This study found there is a strong relationship between mother’s knowledge score and school performance. It was found that mothers’ knowledge score was responsible for 91.1 percent change in school performance. The mean BMI of the mothers was 20.44. We found that the school performance measured by class roll number of the students is significantly related with mothers BMI. There was an imperfect negative association between socio-economic parameters and school performance. But the relationship between the school performances with socio-economic parameters was strongly significant. This study also observed the relationship between Individual Dietary Diversity Score (IDDS) of respondent and marks achieved in class 4 final exam. It is alarming that consumption percentage were low for eggs (30) and milk and milk products (37.5), but majority of the students who consumed milk and milk products (63.3%) and eggs (66.7%) got the highest marks.
Volume: 4
Issue: 1
Page: 44-49
Publish at: 2015-03-01

Software Design and Development of Beverage Vending Machine System Using ARM Architecture with LPC2148

10.11591/ijres.v4.i1.pp13-21
Sanket Suresh Naik Dessai
Beverage vending machine systems are becoming popular in the Indian market.These systems are today available in Indian MNCs and some top rated restaurants and hotels.In most systems the operation are carried manually by the operator in which the billing and change making is carried out by the owner who runnig the shop or restaurant.In India tea and coffee habits were cultured by the colonial rule of the British and the Portuguese,even tody the colonial rule had been over but the habits of tea and coffee beverage consumptions becomes as the routine daily life.Hence there is a need to understand beverage vending machine systems to serve the Indian Market. In this paper,a critical analysis of requirement has been carried out and the system design had been arrived at.The system requirement demand an ARM based controller for better system performance.To meet the system performance criteria and richest of peripherals an LPC2148 with low cost had been selected.The system is more efficient to analyse the change making and the identification had been carried out using the motors,LCDs,water heater,solenoid valve,money box,change making and dispensing unit. The system is tested and validated for the specified test cases.The milk motor run for 10 rotations to drive 200 milligrams of milk powder to the container to make to tea or coffee beverage.In this system a stepper motor had been used can be replaced by using dc motors to avaoid power losses.In future an ATM or credit card based payment system can be incorporated to these systems.
Volume: 4
Issue: 1
Page: 13-21
Publish at: 2015-03-01

The Experimental Platform Design for NCS Based on CAN Bus

10.11591/ijres.v4.i1.pp22-27
Zhao Weiquan , Yuan Huaqiang , Wei Xiaorui
In order to facilitate research on the performance of Networked Control System, overcome the defects of unable to reflect the system performance, based on the CAN bus a kind of NCS experimental platform is designed. The system is composed of a main node and several slave nodes and Dc motor as the actuator. The master node is designed with ARM + U-boot + Linux structure, connecting with PC via Ethernet. For this experiment platform, using c + + Builder a scheduling algorithm performance testing software is developed, to further research on the effects of different scheduling algorithm on the NCS performance.
Volume: 4
Issue: 1
Page: 22-27
Publish at: 2015-03-01

Design and Development of Low Cost Navigation and Security System for Indian Fisherman Using Adrino Nano Platform

10.11591/ijres.v4.i1.pp28-41
Sanket Dessai , Mahir M.M. , Mayur R. , Nilkantha Singha , Vinutha Avaradhi
The fishing industry plays a major role in development of Indian economy. The recent attacks on fishermen taking place in Indo-Srilanka and Indo-Pakistan maritime boundaries have been major concerns. These attacks are primarily caused by the lack of navigation and security features during the voyage. Hence the current situation demands the implementation of precise facilities for reducing man and material loss. This project involves the design and implementation of a Low cost Navigation and Security System for Indian fishermen on Arduino Nano platform. The system developed solves the above said issues by continously tracking the location of fishing vessel and providing minimal security features. The system ensures that navigation is in safe zone within the nation’s maritime boundary and also prevents crossover. This is acheived using GPS receiver which directly links to GPS satellites for current location of the vessel. The required data fields like the latitude and longitude data along with the time stamps are extracted from the GPS samples and used for comparision for determining the exact location of the vessel. This procedure will help in detection of corner cases when the vessel is nearing or about to crossover the maritime boundary, which cannot be marked physically. It is useful for triggering conditions like enabling or disabling fuel injection system, the warning beeps and display notifications to the fishermen. Manual override facility for restarting the engine in case of crossover for limited duration is provided. The security features like authentication for the genuine operator to get access to the engine panel, the support for distress message and the storage of the exact time stamps and GPS locations after encryption in case of initiation of transmitting distress message is provided as a blackbox feature. The passcode based mechanism allows for maximum of three attempts to unlock access to control panel. The GSM modem allows for transmission of distress message to the registered base station/coast guard. The encrypted GPS samples and time stamps are stored in on-chip EEPROM memory for future reference.   
Volume: 4
Issue: 1
Page: 28-41
Publish at: 2015-03-01

Wireless Sensor Network for Performance Monitoring of Electrical Machine

10.11591/ijres.v4.i1.pp1-5
Priyanka Ranaware , N.D. Dhoot
This paper proposes a novel industrial wireless sensor network for industrial machine condition monitoring. To avoid unexpected equipment failures and obtain higher accuracy in diagnostic and prognostic for the health condition of a motor, efficient and comprehensive data collecting, monitoring, and control play an important role to improve the system more reliable and effective. A novel wireless data collection for health monitoring system of electric machine based on wireless sensor network is proposed and developed in this paper. The unique characteristics of ZigBee networks such as low power, low cost, and high flexibility make them ideal for this application. The proposed system consists of wireless sensor nodes which are organized into a monitoring network by ZigBee protocols. A base station and wireless nodes have been developed to form a prototype system. Various sensors have the capability to monitor physiological as well as environmental conditions. Therefore proposed system provides a flexible solution that makes our living spaces more intelligent.
Volume: 4
Issue: 1
Page: 1-5
Publish at: 2015-03-01

Implementation of PI Controller for 3ф BLDCM Drive Using FPGA

10.11591/ijres.v4.i1.pp42-54
S.M. Ramesh Balaji , C. Muniraj
Despite the need of a complex motor controller, the simple construction of BLDC motors offers several inherent advantages not provided with brushed DC motors in terms of low inertia, high torque and a very wide speed range. The BLDC motors include, Longer service life due to a lack of electrical and friction losses and also free maintenance due to a lack of brushes and mechanical commutators. The EMI and noise are reduced because of the elimination of ionizing spikes from brushes. The control system of BLDCM is highly complex drive due to nonlinear nature. In such a system for implementing control algorithm needs high speed processor. In this work the controller Xilinx Spartan-6 FPGA is a demonstration platform intended to become familiar with the new features and availability of the Spartan-6 FPGA. The various experimental tests are carried out in 3Ф BLDCM .The experimental results are reported in order to verify the steady state, transient and robustness performance of the controller.
Volume: 4
Issue: 1
Page: 42-54
Publish at: 2015-03-01

An Efficient VLSI Architecture for Nonbinary LDPC Decoder with Adaptive Message Control

10.11591/ijres.v4.i1.pp6-12
Varatharajan Ramachandran
A new decoder architecture for nonbinary low-density parity check (LDPC) codes is presented in this paper to reduce the hardware operational complexity and power consumption. Adaptive message control (AMC) is to achieve the low decoding complexity,  that dynamically trims the message length of belief information to reduce the amount of memory accesses and arithmetic operations. A new horizontal nonbinary LDPC decoder architecture is developed to implement AMC. Key components in the architecture have been designed with the consideration of variable message lengths to leverage the benefit of the proposed AMC. Simulation results demonstrate that the proposed nonbinary LDPC decoder architecture can significantly reduce hardware operations and power consumption as compared with existing work with negligible performance degradation.
Volume: 4
Issue: 1
Page: 6-12
Publish at: 2015-03-01

Distributed System and Multimaster Replication Model on Reliability Optimation Database

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/4234
Ravie Kurnia Laday , Heru Sukoco , Yani Nurhadryani
Over the last two decades, significant advances have been made in the development of techniques for evaluating the performance, availability, and reliability of computer and communication systems in integration [11]. The reliability of the network is an important parameter in network [4]. Reliability is the performance, availability and security is a factors most important in a network . A distributed system is a system architecture in which computers can communicate and share resources [8]. This research applies a distributed system with load balancing and multimaster replication techniques in database. The results of this study found that the design of a system built to keep the data for connections between servers is in good condition and occurs down on one of the database server.DOI: http://dx.doi.org/10.11591/telkomnika.v13i3.7114 
Volume: 13
Issue: 3
Page: 529-536
Publish at: 2015-03-01

A Simple Strategy of Controlling a Balanced Voltage Capacitor in Single Phase Five-Level Inverter

10.11591/ijpeds.v6.i1.pp160-167
Leonardus Heru Pratomo , F. Danang Wijaya , Eka Firmansyah
The five-level inverter has been used for many applications in renewable energy systems. Even though its harmonic distortion was lower than the conventional two-level inverter. The five-level converter has some disadvantages such as increasing power semiconductor, complex pulse width modulation control methods, and problem with the voltage balancing of the capacitor. This paper aims to propose a modified five-level inverter based on sinusoidal pulse width modulation using phase shifted carrier to enhancing the capacitor voltage balancing. This modified five-level inverter reduces the overall cost and the complexity of the pulse width modulator. Thus making the proposed control system highly simple. The performance and its controller were validated by means of standard laboratory equipments. The analysis, simulation and implementation result showed better performance of five-level inverter.
Volume: 6
Issue: 1
Page: 160-167
Publish at: 2015-03-01

A Robotic Assistance Machine Vision Technique for An Effective Inspection and Analysis

10.11591/ijece.v5i1.pp46-54
Santosh Kumar Sahoo , B. B. Choudhury
An Inspection is a study of methods and techniques that can be suitably employed in practical applications. In this paper, a new activity is proposed and analysis framework to facilitate the inspection of an object using machine vision technique in which maximum efficiency can be achieved. By using LABVIEW software and vision builder software the quality of output images such as image compression, image restoration and multimedia streaming are achieved successfully. So the proposed design makes use of various image processing functions like special filters and classifiers to compute the optimum results. Using smart camera in the inspection system the static as well as the dynamic object is captured in fraction of seconds without any blurs; as a result the optimum image quality without any distortion is obtained for better analysis. The proposed system is very precise, accurate and flexible with reasonable development cost compared to other model. With the aid of an Industrial robotic system with simulation software the object is replaced immediately when the same is rejected by the machine vision model. Apart from this, the proposed model can be implemented for any type of Automation work
Volume: 5
Issue: 1
Page: 46-54
Publish at: 2015-02-01

Adoption of Park’s Transformation for Inverter Fed Drive

10.11591/ijpeds.v5.i3.pp366-373
Jayarama Pradeep , R. Devanathan
Park’s transformation in the context of ac machine is applied to obtain quadrature voltages for the 3-phase balanced voltages. In the case of a inverter fed drive, one can adopt Park’s transformation to directly derive the quadrature voltages in terms simplified functions of switching parameters. This is the main result of the paper which can be applied to model based and predictive control of electrical machines. Simulation results are used to compare the new dq voltage modelling response to conventional direct –quadrature (dq) axes modelling response in direct torque control – space vector modulation scheme. The proposed model is compact, decreases the computation complexity and time. The model is useful especially in model based control implemented in real time, in terms of a simplified set of switching parameters.
Volume: 5
Issue: 3
Page: 366-373
Publish at: 2015-02-01

Fault Location Effect on Short-Circuit Calculations of a TCVR Compensated Line in Algeria

10.11591/ijece.v5i1.pp1-12
Mohamed Zellagui , Heba Ahmed Hassan , Abdelaziz Chaghi
This research work investigated the effect of fault location on short-circuit calculations for a high voltage transmission line equipped with a novel FACTS device, namely Thyristor Controlled Voltage Regulator (TCVR). This main function of this device was to control the voltage and active power of the line. The paper considered a study case for a 220 kV transmission line, in the Algerian transmission power network, which was subjected to a phase to earth fault in the presence of a fixed fault resistance. The paper presented theoretical analysis of the short-circuit calculations which was confirmed by the illustrated simulation results. Simulation results showed the impact of the fault location on the symmetrical current and voltage components of the line, and transmission line phase currents and voltages; before using TCVR and in the presence of TCVR for both cases of positive and negative TCVR controlled voltage.
Volume: 5
Issue: 1
Page: 1-12
Publish at: 2015-02-01

Mitigation of Insider Attacks through Multi-Cloud

10.11591/ijece.v5i1.pp136-141
T Gunasekhar , K Thirupathi Rao , V Krishna Reddy , P Sai Kiran , B Thirumala Rao
The malicious insider can be an employees, user and/or third party business partner. In cloud environment, clients may store sensitive data about their organization in cloud data centers. The cloud service provider should ensure integrity, security, access control and confidentiality about the stored data at cloud data centers. The malicious insiders can perform stealing on sensitive data at cloud storage and at organizations. Most of the organizations ignoring the insider attack because it is harder to detect and mitigate. This is a major emerging problem at the cloud data centers as well as in organizations. In this paper, we proposed a method that ensures security, integrity, access control and confidentiality on sensitive data of cloud clients by employing multi cloud service providers. The organization should encrypt the sensitive data with their security policy and procedures and store the encrypted data in trusted cloud. The keys which are used during encryption process are again encrypted and stored in another cloud area. So that organization contains only keys for keys of encrypted data. The Administrator of organization also does not know what data kept in cloud area and if he accesses the data, easily caught during the auditing. Hence, the only authorized used can access the data and use it and we can mitigate insider attacks by providing restricted privileges.
Volume: 5
Issue: 1
Page: 136-141
Publish at: 2015-02-01
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