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23,675 Article Results

The Relationship Among Life Style, Coping Strategies and Religiosity With General Health in Iranian Students

https://ijphs.iaescore.com/index.php/IJPHS/article/view/4661
Jamal Ashoori , Mohammad Ashoori
General health has been associated with many variables that from most important can be noted Life Style, Coping Strategies and Religiosity. This study examined the relationship between life style, coping strategies, religiosity and general health among Iranian students. This cross sectional study was conducted on 180 students 15-17 year olds who were selected via multi step cluster sampling method design from schools in the Varamin suburb, Iran in 2013. All students completed the questionnaires of life style, coping strategies, religiosity and general health and regression was used for data analyses. The statistical analysis revealed a positive relationship between life style, problem solving strategy and internal religiosity with general health (P<0.01) and a negative relationship between emotional coping strategy with general health (P<0.05). Life style, internal religiosity and problem-focused strategy predicted 32 percent of variance of general health and also share of life style in prediction general health was over of other variables. These results highlight the importance in considering life style at further understanding general health in students.DOI: http://dx.doi.org/10.11591/ijphs.v2i3.3940
Volume: 2
Issue: 3
Page: 123-128
Publish at: 2013-09-01

Study on the Cutting Prediction of Supercritical Material

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2626
Hongtao Chen , Pan Fu , Xiaohui Li
The technology of the artificial neural network (ANN) was applied in the research of supercritical material cutting. Two-dimensional Gaussian surfaces of the three cutting elements and workpiece surface hardness had been established fitting through JMP software. Base on the orthogonal milling experiments, the rules of cutting forces variation were forecasted, as well as the effect to the hardness on workpiece surface. The cutting parameters selected according to the process were built, providing an important basis for the optimization of machining conditions. The prediction results were in good agreement with the experimental results. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3265  
Volume: 11
Issue: 9
Page: 5176-5181
Publish at: 2013-09-01

Immune Status of HIV – Positive Children with Acute Rhinosinusitis

https://ijphs.iaescore.com/index.php/IJPHS/article/view/4656
Nuritdin Narzullaev , Suleyman Suleymanov , Adolat Ismailova , Rano Sabitova
The immune status of 25 HIV-positive children with Acute Rhinosinusitis (ARS) has been studied in comparison with the control group of 14 practically healthy children of the same age. HIV-infected patients with ARS have shown deep infringements of the immune status, especially of T-cells and its subpopulations, and impairments of the humoral immunity, suppression of anti-inflammatory cytokine IL-10 and increase of pro-inflammatory IFN-γ. After conducted treatment we have not seen any certain changes of the immune status in HIV positive patients, even in the cases with clinical improvement. It is possible to ascertain only positive changes of IL-10 maintenance and parallel decrease of IFN-γ in the dynamics of treatment.DOI: http://dx.doi.org/10.11591/ijphs.v2i3.2904
Volume: 2
Issue: 3
Page: 83-88
Publish at: 2013-09-01

Study on Moving Objects by Video Monitoring System of Recognition and Tracing Scheme

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2583
Peilong Xu
In this paper a recognition and tracing scheme for moving objects by video monitoring system was studied. During moving objects recognition, Multi frame sampling method was used to establish the initial background. Edges of the moving objects were drawn according to the changes of the images, and the influence factors for edges drawing were eliminated. In the end, tracing for moving objects could be realized by recognition of morphological characteristics. The experiments indicate that, for field environment, the number of collected frames between 120 to 180 could get better image background. The shadows of the moving objects are the main factor which influence detection of object edges, and they could be eliminated by Shadow edge detection operator. For vehicles tracing, adjacent frame matching method could be used to reflect the time-space transformation of the vehicles. This scheme could realize the recognition and tracing of moving objects by video monitoring system effectively. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.2740
Volume: 11
Issue: 9
Page: 4847-4854
Publish at: 2013-09-01

Applications of Automated Identification Technology in EHR/EMR

https://ijphs.iaescore.com/index.php/IJPHS/article/view/4660
Lidong Wang , Cheryl Ann Alexander
Although both the electronic health record (EHR) and the electronic medical record (EMR) store an individual’s computerized health information and the terminologies are often used interchangeably, there are some differences between them. Three primary approaches in Automated Identification Technology (AIT) are barcoding, radio frequency identification (RFID), and biometrics. In this paper, technology intelligence, progress, limitations, and challenges of EHR/EMR are introduced. The applications and challenges of barcoding, RFID, and biometrics in EHR/EMR are presented respectively.DOI: http://dx.doi.org/10.11591/ijphs.v2i3.3300
Volume: 2
Issue: 3
Page: 109-122
Publish at: 2013-09-01

Grounding Effect on Common Mode Interference of Underground Inverter

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2628
CHENG Qiang , CHENG Ning , LI Zhen-shuang
For the neutral point not grounded characteristics of underground power supply system in coal mine, this paper studied common mode equivalent circuit of underground PWM inverter, and extracted parasitic parameters of interference propagation path. The author established a common mode and differential mode model of underground inverter. Taking into account the rise time of PWM, the simulation results of conducted interference by Matlab software is compared with measurement spectrum on the AC side and motor side of converter, the difference is consistent showing that the proposed method has some validity. After Comparison of calculation results by Matlab simulation ,it can be concluded that ungrounded neutral of transformer could redue common mode current in PWM system, but not very effective, the most efficient way is to increase grounding  impedance of  inverter and motor. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3267
Volume: 11
Issue: 9
Page: 5189-5194
Publish at: 2013-09-01

Vigilance Degree Computing Based on EEG

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2658
Zhenzhong Zhan , Zhendong Mu
In daily life, lots of work need people maintain higher attention or vigilance. In the early study of vigilance, blink frequency, the impedance of skin, body temperature and blood pressure and other physiological signals was used to estimate the vigilance. EEG signal can more directly reflect the brain's activity than other physiological signals, and EEG signal have a higher time resolution. In this paper, ERP component and different frequencies of EEG were used to analyze the alert state, according to this study, in the ERP components, N170 can be a good representation of the degree of fatigue of the subject; Through the 10 subjects EEG frequency distribution analysis, and according to the formula defined in this paper, the vigilance degree of this ten subjects was calculated. DOI:  http://dx.doi.org/10.11591/telkomnika.v11i9.3298  
Volume: 11
Issue: 9
Page: 5409-5414
Publish at: 2013-09-01

Application of Virtual Instrument in Electronic Education

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2665
Zhongbao Ji
Virtual instrumentation is defined as the combination of measurement and control hardware and application software with industry-standard computer technology to create user-defined instrumentation systems. Since the birth of virtual instrument (VI), it enters rapidly into the industrial production field, and Research and Development (RD) field. It can improve production quality, shorten development time, and increase production efficiency. So it is wildly used in companies. In order to improve the ability of students’ using new technology and equipment, and save daily funds, we try to use virtual instrument instead of traditional instruments for analysis and design circuits. The paper adopts the software-LabVIEW and many hardware modules of NI (National Instrument) to study of virtual instrument applied in electronic education of vocational college. The research result of this work can provide a theoretical and practical foundation for vocational education of virtual instrument in the future. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3306 
Volume: 11
Issue: 9
Page: 5455-5460
Publish at: 2013-09-01

Study on Water-Induced Ultra-Weak Luminescence Value of Wheat Kernels

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2594
Yitao Liang , Rui Pang , Wang Feng , Hu Yuankun
The wheat kernels were processed by moistened in water. The spontaneous and water-induced luminescence data (photon counts) were noted with an ultra-weak luminescence (UWL) detector. The following was the features of the data analyzed by the statistical parameters of the spontaneous luminescence and the fitting curves of the water-induced luminescence. The results show that the UWL intensity rises with the moistened time prolonged. It is concluded that the intensity depends on the moistened time mainly. If the moistened kernels owned a more porous structure, in the initial phase of imbibition, a higher UWL emission would be noted. Consequently, the further quantitative research of the relevant could lead a novel testing method about the wheat’s activity and quality. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3150 
Volume: 11
Issue: 9
Page: 4935-4941
Publish at: 2013-09-01

Diagnosis Method for Analog Circuit Hard fault and Soft Fault

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2660
Baoru Han , Jingbing Li , Hengyu Wu
Because the traditional BP neural network slow convergence speed, easily falling in local minimum and the learning process will appear oscillation phenomena. This paper introduces a tolerance analog circuit hard fault and soft fault diagnosis method based on adaptive learning rate and the additional momentum algorithm BP neural network. Firstly, tolerance analog circuit is simulated by OrCAD / Pspice circuit simulation software, accurately extracts fault waveform data by matlab program automatically. Secondly, using the adaptive learning rate and momentum BP algorithm to train neural network, and then applies it to analog circuit hard fault and soft fault diagnosis. With shorter training time, high precision and global convergence effectively reduces the misjudgment, missing, it can improve the accuracy of fault diagnosis and fast. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3301 
Volume: 11
Issue: 9
Page: 5420-5426
Publish at: 2013-09-01

Decreasing Dissemination of Disturbances within Network Systems by Neural Networks

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2595
Olga V. Fridman , Alexander Ya. Fridman
We apply neural networks to locate initial sources of disturbances in network systems during coordinating them by a gradient coordination technique based on the earlier proposed necessary and sufficient coordinability conditions for locally organized hierarchies of dynamic systems. Thus we restrict spread of disturbances and save resources spent for maintaining of the system. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.2903
Volume: 11
Issue: 9
Page: 4942-4948
Publish at: 2013-09-01

Research on Remote Network Bidirectional Detect and Control Model

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2604
Hongyao Ju , Xin Wang , Fei Luo
Remote network bidirectional detect and control technologies are the key factors to solve local network allopatry expansibility and management. With studying gateway integration technology, bidirectional VPN technology, identity authentication technology and dynamic host management technology can be integrated into gateway. Thus, bidirectional connect and control among allopatry local networks based on Internet can be solved. Whole area expansibility of local network is realized. With experiment, the model is proved to finish remote bidirectional interconnection of local network automatically and to obtain allopatry local users authority. The equipment detecting and controlling in remote local networks are realized. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3243 
Volume: 11
Issue: 9
Page: 5011-5017
Publish at: 2013-09-01

Carrier Based Pulse Width Modulation Control of a Non-Square Direct Matrix Converter with Seven-phase Input and Three-phase Output

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/4961
Sk Moin Ahmed , Haitham Abu-Rub , Zainal Salam
This paper presents pulse width modulation technique for a direct ac-ac converter. The converter has seven-phase input supply and three-phase output. The input supply may be obtained from a seven-phase wind energy generation system with variable output voltage magnitude and frequency. The output of the proposed converter topology may be fed to the three-phase stiff grid system. Thus the requirement of the modulation of the ac-ac converter is to produce fixed voltage and fixed frequency output while the input can be variable. Additionally the output voltage gain should be high. Simple carrier-based PWM technique is suggested and harmonic injection scheme is proposed to enhance the output voltage magnitude. The output voltage reaches 90% of the input supply voltage with the proposed technique. An additional control block is used to stabilize the output voltage and frequency of the converter. Simulation results are shown in the paper for the verification of the proposed scheme.DOI: http://dx.doi.org/10.11591/ijpeds.v3i3.4315
Volume: 3
Issue: 3
Page: 344-350
Publish at: 2013-09-01

Segmentation Method of Lingwu Long Jujubes based on L*a*b* Color Space

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2649
Yutan Wang , Wenbin Li , Shuai Pang , Jiangming Kan
Collecting Lingwu long jujubes’ growth characteristics and identifying maturity compared with growth model are important factors in automatic image monitoring system for fruit maturity. To segment and extract regions of Lingwu long jujubes’ against nature scenes in digital images is the key to image recognition. Color space transformation, is used to transform RGB color space to CIE L*a*b* color space, analyze characteristics of three-dimension histogram of each component and increase target display properties by using each component’s point operation. Also, the image pixel threshold segmentation method of each component is proposed; then the target image can be obtained by mathematical morphological and logical operation of the extracted image. 50 images of Lingwu long Jujubes are utilized to compare segmentation results of algorithm with those of manual segmentation method. Comparison results show that the proposed segmentation algorithm can be effectively applied to extracting Lingwu long jujubes’ images against nature scenes, and its accuracy has reached 92.6%.This algorithm has decreased the segmentation error caused by image noise while extracting targets which has strong robustness to the color distribution fluctuation as well. DOI: http://dx.doi.org/10.11591/telkomnika.v11i9.3289 
Volume: 11
Issue: 9
Page: 5344-5351
Publish at: 2013-09-01

Multilevel Inverter Based Active Power Filter for Harmonic Elimination

https://ijpeds.iaescore.com/index.php/IJPEDS/article/view/4952
G. Nageswara Rao , P. Sangameswara Raju , K. Chandra Sekhar
In this paper, support vector machine (SVM) and fuzzy based feedback harmonic elimination technique is proposed. The proposed technique is to overcome the drawbacks of control rule selection of fuzzy logic. Here, the feedback error voltage and change of error voltage of the load is applied as the input of fuzzy logic. The Fuzzy Logic Controller (FLC) builds the logical rules; it depends on the input error voltage and change of error voltage. From the fuzzy rules, the basic SVM takes a set of input data and predicts optimum switching angle and frequency, for each given input. Then, the selected switching angle and frequency is applied to multilevel inverter and the harmonics of the system is eliminated. The proposed method is implemented in MATLAB/simulink working platform and the harmonic elimination performance is demonstrated by the comparison of Neuro Fuzzy Controller (NFC) and Adaptive Neuro Fuzzy Interference System (ANFIS).DOI: http://dx.doi.org/10.11591/ijpeds.v3i3.4314
Volume: 3
Issue: 3
Page: 271-278
Publish at: 2013-09-01
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