Articles

Access the latest knowledge in applied science, electrical engineering, computer science and information technology, education, and health.

Advanced Search
Filter Icon

Filters article

Years

FAQ Arrow
Single Year
Range Year
0
0

Source Title

FAQ Arrow

Authors

FAQ Arrow

23,598 Article Results

Application of Improved Genetic Algorithm in PID Controller Parameters Optimization

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2121
Ying Chen , Yong-jie Ma , Wen-xia Yun
The setting and optimization of Proportion Integration Differentiation(PID) parameters have been always the important study topics in the automatic control field. The current optimization design methods are often difficult to consider the system requirements for quickness ,reliability and robustness .So a method of PID controller parameters optimization based on Improved Genetic Algorithm(IGA) is presented .Simulations with Matlab have proved that the control performance index based on IGA is better than that of the GA method and Z-N method, and is a method which has good practical value of the PID parameter setting and optimization.DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2301
Volume: 11
Issue: 3
Page: 1524-1530
Publish at: 2013-03-01

Risk Factors of the Incidence of Pulmonary Tuberculosis in Banjarmasin City, Kalimantan, Indonesia

https://ijphs.iaescore.com/index.php/IJPHS/article/view/4594
Farida Heriyani , Adi Heru Husodo , Yusrizal Djam′an Saleh
Pulmonary tuberculosis remains a major cause of morbidity and mortality in the world, including Indonesia. In South Kalimantan, an increasing incidence of tuberculosis up to the year 2010 which were taken using a smear-positive reached 3,237 cases, the largest was in Banjarmasin City which reached 642 cases and the detection rate still low, which is 52, 1%. To investigate the relationship among environmental risk factors of the house (residential density, the air temperature, humidity, ventilation, and natural lighting), smoking behavior and alcohol consumption among tuberculosis patients with the incidence of pulmonary tuberculosis in Banjarmasin City. This study was an analytic observational with case control study. The subjects were tuberculosis patients with smear-positive as a case group and smear-negative as a control group. Residential density, the air temperature, ventilation, natural lighting, smoking behavior and alcohol consumption significantly associated with the incidence of pulmonary tuberculosis in Banjarmasin City. While the humidity was not significantly associated. The most dominant risk factors in the incidence of pulmonary tuberculosis in Banjarmasin City were inappropriate of the air temperature in subjects with a history of household contact with tuberculosis patient, natural lighting, and house ventilation.DOI: http://dx.doi.org/10.11591/ijphs.v2i1.1483
Volume: 2
Issue: 1
Page: 1-6
Publish at: 2013-03-01

A New Resource Information Integrating Method in Semantic Concept Networks

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2073
Li Sheng Qi
Information integrating in Semantic Concept Networks(SCN) is one of the important operations in these networks. These operations require resource usage. Due to the limited resource of units, the resource productivity should be considered as a key objective in design of Semantic Concept Networks. Therefore the Integrating is a suitable method that used in resource usage management. For this purpose many methods have been proposed. In this paper, the idea of not sending time correlated information of units has been considered by using the sequential function. Also, a model to estimate the remaining resource of units by the base station has been presented. The proposed ideas have been implemented over the LANDING-C protocol. Evaluation results showed that the proposed methods had a better performance in resource usage and the lifetime of the network in comparison with similar methods. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2176
Volume: 11
Issue: 3
Page: 1125-1133
Publish at: 2013-03-01

Design and Development of Stream Processor Architecture for GPU Application Using Reconfigurable Computing

10.11591/ijres.v2.i1.pp1-14
Sanket Dessai , Krishna Bhushan Vutukuru
Graphical Processing Units (GPUs) have become an integral part of today’s mainstream computing systems. They are also being used as reprogrammable General Purpose GPUs (GP-GPUs) to perform complex scientific computations. Reconfigurability is an attractive approach to embedded systems allowing hardware level modification. Hence, there is a high demand for GPU designs based on reconfigurable hardware. Stream processor consists of clusters of functional units which provide a bandwidth hierarchy, supporting hundreds of arithmetic units. The arithmetic cluster units are designed to exploit instruction level parallelism and subword parallelism within a cluster and data parallelism across the clusters.For decreasing the area and power, a single controller is used to control data flow between clusters and between host processor and GPU. The designed of stream processor unit has been carried out in Verilog on Altera Quartus II and simulated using ModelSim tools. The functionality of the modelled blocks is verified using test inputs in the simulator.The simulated execution time of 8-bit pipelined multiplier is 60 ps and 100 ns for 8-bit pipelined adder while operating at 90 MHz.
Volume: 2
Issue: 1
Page: 1-14
Publish at: 2013-03-01

Temperature Rise Comparison of Switchgear in SF6, N2, and Air

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2105
Feng Hao , Zhang Junmin
Based on the heat conduction equation, fluid flow governing equation and radiation heat transfer equation, a multi-physics coupled mathematical model is established, the convection heat transfer problem between solid and fluid is solved by wall function. The three dimensional thermal field in a type of switchgear filled respectively with SF6, N2, and air are calculated and analyzed to discuss the feasibility of using air or N2 as the substitution of SF6 by the finite volume method. The results show that the temperature field in three gases are similar in the switchgear. The temperature rise of current-carrying loop is the highest in SF6 and is the lowest in the air. So the conclusion could be made that air or N2 can replace SF6 as the insulating gas of switchgear on the perspective of temperature rise. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2217
Volume: 11
Issue: 3
Page: 1377-1382
Publish at: 2013-03-01

Design and Implementation of Modified Partial Product Reduction Tree for High Speed Multiplication

10.11591/ijres.v2.i1.pp15-20
Sachin B. Jadhav , Jayamala K. Patil , Ramesh T. Patil
This paper presents the details of hardware implementation of modified partial product reduction tree using 4:2 and 5:2 compressors. Speed of multiplication operation is improved by using higher compressors .In order to improve the speed of the multiplication process within the computational unit; there is a major bottleneck that is needed to be considered that is the partial products reduction network which is used in the multiplication block. For implementation of this stage require addition of large operands that involve long paths for carry propagation. The proposed architecture is based on binary tree constructed using modified 4:2 and 5:2 compressor circuits. Increasing the speed of operation is achieved by using higher modified compressors in critical path. Our objective of work is, to increase the speed of multiplication operation by minimizing the number of combinational gates using higher n:2 compressors. The experimental test of the proposed modified compressor is done using Spartan-3FPGA device (XC3S400 PQ-208). Using tree architectures for the partial products reduction network represent an attractive solution that is frequently applied to speed up the multiplication process. The simulation result shows 4:2 and 5:2 compressor output which is done using Questa Sim 6.4c Mentor Graphics tool.
Volume: 2
Issue: 1
Page: 15-20
Publish at: 2013-03-01

Fuzzy Comprehensive Evaluation Software of Teaching Quality Based on Entropy

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2097
Guihua Zheng , Quanlong Guan
The present teaching evaluation models are researched on and the evaluation criteria is designed automatically from the perspectives of experts and students. And then that is made to be a kind of scientific and reasonable criteria. By combining the approach weighted entropy and fuzzy comprehensive evaluation, the present model proposes a teaching comprehensive evaluation model. This software model solves some problems in conducting quantitative analysis of teaching equality. And at the same time, it avoids subjectivity in directly assigning weight to the results. A case study shows that this software model can improve fuzzy comprehensive evaluation with reliability, accuracy as well as objectivity. The model will be suggested to optimize teaching management and improve teaching quality. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2209
Volume: 11
Issue: 3
Page: 1313-1321
Publish at: 2013-03-01

Optimization and Implementation of Reversible BCD Adder in Terms of Number of Lines

10.11591/ijres.v2.i1.pp21-26
P.Radhika Ramya , Y.Sudha Vani
The Reversible logic plays an important role to obtain the minimal energy dissipation. It is the main requirement in the low power digital design. To implement a reversible function some additional lines are required. Sometimes it is more than the primary inputs which leads to increased size of the circuit. Hence the reducing the number of circuit lines is one of the major criterion in reversible logic. The general idea is to merge the garbage output lines with appropriate constant input lines. In this work, Toffoli gate implementation of BCD adder and press gate implementation of BCD adder is taken and an optimization algorithm has been applied to reduce the number of lines in the circuit. The kit used to implement the design is Vertex5 in which both the area and delay are analyzed.
Volume: 2
Issue: 1
Page: 21-26
Publish at: 2013-03-01

A Novel QoS Routing Algorithm in Wireless Mesh Networks

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2137
Liu Hui
With the rapid development of information technology, people’s daily life becomes more and more dependent on wireless technologies. Wireless mesh network consists of a number of characteristics associated with the return path, with a strong fault tolerance, stability, widely used by the light to the city network construction, military applications, and key service providers and other fields. Compared with traditional wired communication technologies, how to provide qualified QoS routing service is a primary problem for wireless mesh networks waiting for effective solution. Regarding this problem, this paper applys the theory of Evolutionary Game to QoS routing algorithm for wireless mesh networks and proposed a novel algorithm called EGWRA which can not only improve the performance of traditional QoS routing protocols but also be able to reduce the cost of the routing algorithm. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2321
Volume: 11
Issue: 3
Page: 1652-1664
Publish at: 2013-03-01

Configurable Router Design for Dynamically Reconfigurable Systems based on the SoCWire NoC

10.11591/ijres.v2.i1.pp27-48
Arash Farhadi Beldachi , Mohammad Hosseinabady , Jose Luis Nunez-Yanez
New Field Programmable Gate Arrays (FPGAs) are capable of implementing complete multi-core System-on-Chip (SoC) with the possibility of modifying the hardware configuration at run-time with partial dynamic reconfiguration. The usage of a soft reconfigurable Network-on-Chip (NoC) to connect these cores is investigated in this paper. We have used a standard switch developed with the objective of supporting dynamically reconfigurable FPGAs as the starting point to create a novel configurable router. The configurable router uses distributed routing suitable for regular topologies and can vary the number of local ports and communication ports to build multi dimensional networks (i.e., 2D and 3D) with different topologies. The evaluation results show that the selection of the ideal router is different depending on traffic patterns and design objectives. Overall, the mesh network with a four local ports router offers a higher level of performance with lower complexity compared to the traditional mesh with one local port router.
Volume: 2
Issue: 1
Page: 27-48
Publish at: 2013-03-01

New Schmitt Trigger with Controllable Hysteresis using Dual Control Gate-Floating Gate Transistor (DCG-FGT)

10.11591/ijres.v2.i1.pp49-54
Abderrezak Marzaki , V. Bidal , R. Laffont , W. Rahajandraibe , J-M. Portal , R. Bouchakour
This paper presents different low voltage adjustable CMOS Schmitt trigger using DCG-FGT transistor. Simple circuits are introduced to provide flexibility to program the hysteresic threshold in this paper. The hysteresis can be controlled accurately at a large voltage range. The proposed Schmitt trigger have been designed using 90nm 1.2V CMOS technology and simulated using Eldo with PSP device models. The simulation results show rail-to-rail operation and adjustable switching voltages VTH- (low switching voltage) and VTH+ (high switching voltage).
Volume: 2
Issue: 1
Page: 49-54
Publish at: 2013-03-01

A High Regulated Low Ripple DC Power Supply Based on LC Filter and IGBT

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/4929
Ayan Mitra , Abhisek Roy
Filaments operating at a high temperature region would require ripple free current constant power source for their heating purposes. Introduction of ripple in the power supply would result in high power loss, aberrant, unpredictable temperature rise etc. High current ripple can also extenuate the life of electrolytic capacitors used in the circuit. In this paper we propose a scheme in which we would not only use simple, low cost, easily available electronic components but also reduce the value of ripple factor to <0.1% and load regulation to 0.1%.DOI: http://dx.doi.org/10.11591/ijpeds.v3i1.696
Volume: 3
Issue: 1
Page: 30-40
Publish at: 2013-03-01

Fault Diagnosis of Automobile Crane Power Steering System Aided by ICP-AES

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2102
Lidan Chen
The objective of this paper is to evaluate an innovative application of inductively coupled plasma atomic emission spectroscopy (ICP-AES) on the fault diagnosis of automobile crane hydraulic power steering (HPS) system. Contents of Fe, Cu and Al were examined by ICP-AES in the oil samples of HPS system for four different mileages of Puyuan QY50H. The mileages were 2000-9000 km, 11000-19000 km, 21000-28000 km and 32000-40000 km separately. Database of major mental contents in automobile crane HPS system of Puyuan QY50H with different mileage were calibrated. Results showed that, major mental contents were increased with the increasing of driving mileage and the normal contents laid between two trend lines. Through the determination of mental contents in HPS oil sample and further compared them with the values in their database, we could not only evaluate the wear condition of automobile crane HPS system, but also helped to diagnose the faults without dissembled the problematic vehicle. The results further indicated that, in time maintenance, high quality and low cost reparation could be realized by the application of ICP-AES technology on fault diagnosis of automobile crane power steering system. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2214
Volume: 11
Issue: 3
Page: 1355-1362
Publish at: 2013-03-01

Kalman Filter Localization Algorithm Based on SDS-TWR Ranging

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2111
Liu Wei , Zou Jian , Wang Chunzhi , Xu Hui
Node localization is the basic mechanism for wireless sensor networks. Which location data is indispensable information in the monitoring of events.In this paper,we proposed a new algortithm which is the Kalman filter localization algorithm based on SDS-TWR ranging method in order to solve the problem of node localization.Firstly,we use SDS-TWR algorithm to rang distance between the archor nodes  and unknown node .Then, We sketchy calculate the unknown node coordinates using weighted maximum likelihood estimation(WMLE) method.Lastly, We use the Kalman filter algorithm to optimize the coordinates of the second step. The experimental results show that the algorithm can effectively improve the positioning accuracy of the system and achieve the desired objectives. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2225
Volume: 11
Issue: 3
Page: 1436-1448
Publish at: 2013-03-01

Resources Scheduling System for Collaborative Design in Ontology and Multi-agents

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2096
Liu Dianting , Jia Feifei
A core issue of collaborative design is scheduling of design resources. In the collaborative design based on network, design resources often have some traits such as half-structured, distributed, isomerized and so on. Therefore, a kind of resources scheduling system based on the technology of ontology and the technology of multi-agents in collaborative design is proposed in this paper. The ontology models of design resources, and the algorithm of resources scheduling, and the function of each agent in system, and the flow of collaborative work among all agents are elaborated, and the software system of resources scheduling is studied and designed in this paper. The testing results show that the principle and method proposed in this paper are correct, and convenient in operation, and strong in practical application, and have high value in application and popularization. DOI: http://dx.doi.org/10.11591/telkomnika.v11i3.2208
Volume: 11
Issue: 3
Page: 1305-1312
Publish at: 2013-03-01
1 2 3
...
1573 1574
Show 1520 of 1574

Discover Our Library

Embark on a journey through our expansive collection of articles and let curiosity lead your path to innovation.

Explore Now
Library 3D Ilustration