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27,404 Article Results

Anchor Movement Strategy for Conjecture Geometry Based Localization Scheme in Wireless Sensor Network

10.11591/ijra.v5i4.pp255-261
Niraj Bhupal Kapase , Santosh P Salgar , Mahesh K Patil , Prashant P Zirmite
Abstract—Localization of sensor node with least error is one of the major concern in wireless sensor network as some of the application require sensor node to know their location with high degree of precision. For mobile anchor based localization many of the path planning schemes already developed which includes scan, double scan, Circles & S- Curves. These path planning schemes have some limitations like localization error, Number of sensor nodes covered in the network, Trajectory length of mobile anchor node.  This paper represents anchor movement strategy which is based on Scan path, with modifications are made in such a way that it satisfies the requirements of localization scheme.  This movement strategy ensures that trajectory of mobile anchor node will minimize localization error and also will cover majority of sensor node in the environment. The localization error yielded by Modified Scan algorithm is in the range of 0.2 to 0.4m which is quite lower than the other existing mentioned path planning strategies producing localization error in the range 0.6 to 1.8mKeywords—Localization; Mobile anchor node; Wireless sensor network; Modified Scan algorithm
Volume: 5
Issue: 4
Page: 255-261
Publish at: 2016-12-01

Midwives Performance in Early Detection of Growth and Development Irregularities of Children Based on Task Commitment

10.11591/ijere.v5i4.5957
Sri Utami , Nursalam Nursalam , Rachmat Hargono , Rekawati Susilaningrum
The purpose of this study was to analyze the performance of midwives based on the task commitment. This was an observational analytic with cross sectional approach. Multistage random sampling was used to determine the public health center, proportional random sampling to selected participants. The samples were 222 midwives in the public health center of Surabaya City. Data were collected by questionnaires on exogenous variables and sheet of data collectors for the performance of midwives. Data was analyzed by using Partial Least Square (PLS). This study found the results of the self leadership directly affects the performance with the value of T-statistic of 3.852> T-table (1.96) with the value of the path coefficient of 0.257, while the value of the indirect influence on the strategy of self leadership performance through mediator task commitment with path coefficient value of 0.053. These models can be used as a reference in improving the performance of midwives in other activities related to maternal and child health services.
Volume: 5
Issue: 4
Page: 300~305
Publish at: 2016-12-01

Future Tech 5g Virtual Zero Latency

10.11591/ijict.v5i3.pp106-110
Nikitha Nikitha Nikitha
With the point of conveying any data in whenever and anyplace, the people to come (5G) remote communication systems turn into a style theme in the remote examination territories and new waveform, as one of the key empowering advances in 5G physical layer, pulls in developing exploration considerations lately. Be that as it may, the current method for waveform examination or investigation depends on the change of range productivity or use, while the majority of them neglects to research the vitality proficiency conduct, which is appeared to be the key execution metric of 5G frameworks. In this paper, the most part is concentrated on looking over the waveforms from the vitality proficiency perspective. Two classifications of waveforms, specifically channel based waveform and spreading-based waveform, are broke down and the related execution issues are talked about. Besides, we actualize the above waveforms utilizing programming characterized radio based model stage and produce the estimation results for the vitality productivity correlation.
Volume: 5
Issue: 3
Page: 106-110
Publish at: 2016-12-01

Performance Analysis of 5-Phase Multi-level Inverter Using Carrier Based PWM Technique

10.11591/ijape.v5.i3.pp151-158
M. Lavanya , B. Jyothi
The major analysis has been based on the induction machine drive system that is for the analysis of the carrier based PWM two level source inverter. The unbalanced conditions are mainly to handle the results of simulation for the analysis that results in the two fault conditions. The system setup has been involving the voltage source inverter as well as the five phase multi-level inverter. The effects are through performing the scenarios which consider the performance effects with the load on induction machine. The simulation is based on the imbalance conditions which results on the oscillations depending on the electromagnetic torque through the attendant reduction of the torque rating. The larger slipping has been in the rotor speed.
Volume: 5
Issue: 3
Page: 151-158
Publish at: 2016-12-01

Artificial Bee Colony Algorithm for An Optimal Solution for Combined Economic and Emission Dispatch Problem

10.11591/ijape.v5.i3.pp111-119
Sandeep Bhongade , Sourabh Agarwal
In India Electrical Energy is generated mainly Coal based Thermal Power stations and hydro Electric Power Stations. The main aim of power generating company is to provide good quality and reliable power to consumers at minimum cost. The problem of Combined Economic and Emission Dispatch  deals with the minimization of both fuel cost and emission of pollutants such as oxides of Nitrogen and Oxides of Sulphur. In our power system the emission is major problem created that’s why in now a days we move from green energy source or renewable energy such as Sunlight, Wind, Tides, Wave, and Geothermal Heat Energy. The Emission constrained Economic Dispatch problem treats the emission limit as an additional constraint and optimizes the fuel cost. In this paper we optimizes the Combined Economic and Emission Dispatch problem by using two different optimization method such as Artificial Bee Colony (ABC) and Genetic Algorithm (GA).The proposed ABC Algorithm has been successfully implemented is to IEEE 30 bus and Indian Utility sixty two Bus System The simulation result are compare and found the effective algorithm for Combined Economic and Emission Dispatch problem.
Volume: 5
Issue: 3
Page: 111-119
Publish at: 2016-12-01

A Step Down Transformerless Single Switch Integerated Buck and Buck-Boost Converter

10.11591/ijape.v5.i3.pp144-150
P. Maithili , C. Tharani , J. Nivedha , D. Soundarrajan
This paper presents about the designing of the controller for integrated Buck Buck-Boost converter for maintaining the constant DC output voltage. This constant output voltage can be used for low voltage application. The absence of transformer includes the advantages of losses is less, efficient power factor and high efficiency. It provides the simple control structure with the positive constant output voltage .It operates on the closed loop with the designing of the PI controller for a MOSFET switch to provide the gate pulse. Whatever may be the input voltage it will produce the constant output voltage. The converter is successfully done by using MAT Lab/Simulink and verified the error reducing to negligible values.
Volume: 5
Issue: 3
Page: 144-150
Publish at: 2016-12-01

Mining Top-K Click Stream Sequences Patterns

10.11591/ijeecs.v4.i3.pp655-664
MEHDI Haj Ali , Qun-Xiong Zhu , Yan-Lin He
Sequential pattern mining, it  is not just important in data mining field , but  it is the basis of many applications .However, running applications cost time and memory, especially when dealing with dense of the dataset. Setting the proper minimum support threshold is one of the factors that consume more memory and time. However ,  it is difficult for users to get the appropriate patterns, it may present too many sequential patterns  and makes it difficult for users to comprehend the results. The problem becomes worse and worse when dealing with long click stream sequences or huge dataset. As a solution, we developed an efficient algorithm, called TopK (Top-K click stream sequence pattern mining), which employs the output as top-k patterns , K is the most important and relevant frequencies (with a high support) . However ,our algorithm based on pseudo-projection to avoid consuming more time and memory, and uses several efficient search space pruning methods together with BI-Directional Extension. Our extensive study and experiments on real click stream datasets show TopK significantly outperforms the previous algorithms.
Volume: 4
Issue: 3
Page: 655-664
Publish at: 2016-12-01

Smart Portal Application a Complete App for Student and Staff Management

10.11591/ijict.v5i3.pp119-123
Parthipan Vadivel
In this article I am introducing a new model of Attendance which is very compactable for and useful for attendance managementToday is the generation of “Smart class”, ”e-learning” “Videoconferencing” “social networking” “Skype” “Facebook” “Whatsapp”.All class activities are done and carried out in system and web, Wi-Fi. The main core idea of this paper is to convert these activities into our Smart phones as Applications. The Application is nothing but a mobile app that can be installed in any Smartphone and use it through Wi-Fi.
Volume: 5
Issue: 3
Page: 119-123
Publish at: 2016-12-01

An Analytical Approach for DG Placement in Reconfigured Distribution Networks

10.11591/ijape.v5.i3.pp137-143
Sarfaraz Nawaz , Ajay Bansal , M. P. Sharma
A novel approach is proposed in this paper for optimal placement of DG units in reconfigured distribution system with the aim of reduction of real power losses while satisfying operating constraints. The proposed analytical method for optimal DG placement is developed based on a new mathematical formulation. Type-I and type-II DG units are used here. The results of the proposed technique are validated on IEEE 69 bus distribution system. The level of DG penetration is also considered in a range of 0–50% of total system load. A novel index is also proposed which incorporates level of DG penetration and percentage reduction in real power losses. The results are promising when compared with recently proposed algorithms.
Volume: 5
Issue: 3
Page: 137-143
Publish at: 2016-12-01

Convergence Evaluation of a Load Flow Method based on Cespedes' Approach to Distribution System Analysis

10.11591/ijece.v6i6.pp3276-3282
Diego Issicaba , Jorge Coelho
This paper evaluates the convergence of a load flow method based on Cespedes' formulation to distribution system steady-state analysis. The method is described and the closed-form of its convergence rate is deduced. Furthermore, convergence dependence of loading and the consequences of choosing particular initial estimates are verified mathematically. All mathematical results have been tested in numerical simulations, some of them presented in the paper.
Volume: 6
Issue: 6
Page: 3276-3282
Publish at: 2016-12-01

Transient Analysis of Switching the Distributed Generation Units in Distribution Networks

10.11591/ijape.v5.i3.pp130-136
Mehrnoosh Vatani
Adding distributed Generators (DGs) to the passive electrical networks causes major changes in the specifications of the network including voltage profile, short circuit level and transient stability. In this paper, the effect of DGs switching transient in network is considered. The DGs location are changed in different buses. Two types of DGs are used (i.e. wind and synchronous DGs). Switching transient signals are time variant. It has a continuous spectrum of frequency. Fast Fourier and Wavelet transform methods are used for transient analysis. The proposed method is applied to IEEE-13 Bus distribution system.
Volume: 5
Issue: 3
Page: 130-136
Publish at: 2016-12-01

Flexible Power Regulation of Grid-Connected Inverters for PV Systems Using Model Predictive Direct Power Control

10.11591/ijeecs.v4.i3.pp508-519
R S Ravi Sankar , S.V. Jayaram Kumar , K. K. Deepika
This paper presents a Model Predictive Direct Power Control (MPDPC) strategy for a grid-connected inverter used in a photovoltaic system, as found in many distributed generating installations. The controller uses a system model to predict the system behavior at each sampling instant. Using a cost function, the voltage vector with least power ripple is generated. The resultant voltage vector is applied during the next sampling period which gives flexible power regulation. The effectiveness of the proposed MPDPC strategy is verified using MATLAB/ SIMULINK. 
Volume: 4
Issue: 3
Page: 508-519
Publish at: 2016-12-01

A Multi-objective Hybrid Heuristic Approach for Optimal Setting of FACTS Devices in Power System Operation

10.11591/ijape.v5.i3.pp120-129
Sai Ram Inkollu , Venkata Reddy Kota
Improvement of power system performance in terms of increased voltage profile and decreased transmission loss is becoming one of the challenging tasks to the system operators under open access environment. Apart from traditional power flow controlling devices, use of Flexible AC Transmission System (FACTS) devices can give an attractive solution for the operation and control of deregulated power system. The type, size, location and number of FACTS devices are to be optimized appropriately in order to get the targeted benefits. In this paper, two FACTS devices, Thyristor Controller Phase Shift Transformer (TCPST) and Interline Power Flow Controller (IPFC) are selected to obtain the required performance such as improvement of voltage profile and loss minimization. To search the optimal location and optimal rating of the selected FACTS devices, a hybrid algorithm which formulated with Particle Swarm Optimization (PSO) and Gravitational Search Algorithm (GSA) is proposed. At the first step, the optimization problem is solved for finding the optimal location of FACTS devices using PSO with an objective of voltage profile maximization and later GSA is implemented to optimize their parameters with an objective of transmission loss minimization. The proposed method is implemented on IEEE 30-bus test system and from the simulation results it can be proved that this technique is well suited for real-time application.  
Volume: 5
Issue: 3
Page: 120-129
Publish at: 2016-12-01

Design of Single-Stage Flyback PFC Converter for LED Driver

10.12928/telkomnika.v14i4.3966
Wang; Xi’an Technological University Qi , Wu; Xi’an Technological University Jie , Baohua; Xi’an Technological University Lang
A light emitting diode (LED) driver based on single-stage power factor correction (PFC) is presented in this paper. The designed LED driver using flyback topology can achieve power factor correction and constant-current drive LED in boundary conduction mode. The circuit principle is described in detail, the formulas for MOS switch-on time, switching frequency and the main impact factor of power factor are proposed. The experiment results show that the designed LED driver has high power factor, stable output and it can drive the LED with high efficiency.
Volume: 14
Issue: 4
Page: 1263-1268
Publish at: 2016-12-01

Fault Diagnosis in Medium Voltage Drive Based on Combination of Wavelet transform and Support Vector Machine

10.12928/telkomnika.v14i4.4033
Xudong; China University of Petroleum Cao , Shaozhe; China University of Petroleum Zhou , Jingze; China University of Petroleum Li , Shaohua; China University of Petroleum Zhang
Nowadays, Medium Voltage Drive (MVD) has been widely applied in the field of high-powered motor speed-regulation. These types of converter use a lot of insulated gate bipolar translators (IGBTs). So it is very important to find an effective way to diagnose IGBT open-circuit faults. This study describes a method of diagnosis for IGBT open-circuit faults in MVD whose topology is cell series of multi-level. This method combines wavelet transform (WT) and support vector machine (SVM). The wavelet transform is used to extract fault features and SVM is used to classify the fault states of a single power unit. Then, the trained SVM classifier is used to scan all power units of MVD sequentially. Results of simulation on the platform of MATLAB/Simulink show that this method has a good diagnosis capability. It can diagnose the IGBT open-circuit faults of the whole inverter system, and diagnosis accuracy is up to 96%. So, this method has a good application prospect.
Volume: 14
Issue: 4
Page: 1284-1291
Publish at: 2016-12-01
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