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23,598 Article Results

The Planning and Digital Design for Welding Production Line of the Car Rear Floor

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2359
Zhang Chun-Yan , Qiao Yin-Hu , Li Feng , Chen Jie-Ping
The last two sub-assembly welding production line of the car rear floor is designed in this paper. Firstly, the welding production line of the car rear floor is complete planned and designed from global aspect by analysis the structure of body-in-white and the car rear floor; Secondly, each working position fixture are designed and the location of all fixture are arranged according to location and spot welding requirements with the CATIA software. Finally, the conveying appliance of welding production line for the car rear floor are detailed planed, according to the production program, the economic requirements to complete a three-dimensional design of delivery devices, ergonomic simulation and dynamic interference checking in the process of material transportation are realized in virtual simulation platform DELMIA software, to ensure the production line design is reasonable and feasible from theory. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2685
Volume: 11
Issue: 6
Page: 3293-3297
Publish at: 2013-06-01

Diagnosis of Hepatocellular Carcinoma Spectroscopy Based on the Feature Selection Approach of the Genetic Algorithm

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2340
Shao-qing Wang , Qiang Liu , Dong-yue Yu , Guang-ju Liang
This paper aims to study the application of medical imaging technology with artificial intelligence technology on how to improve the diagnostic accuracy rate for hepatocellular carcinoma. The   recognition method based on genetic algorithm (GA) and Neural Network are presented. GA was used to select 20 optimal features from the 401 initial features. BP (Back-propagation Neural Network, BP) and PNN (Probabilistic Neural Network, PNN) were used to classify tested samples based on these optimized features, and make comparison between results based on 20 optimal features and the all 401 features. The results of the experiment show that the method can improve the recognition rate. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2663
Volume: 11
Issue: 6
Page: 3159-3164
Publish at: 2013-06-01

An Evaluation to Assess the Knowledge regarding Palliative Care in Neonatal Nursing among Staff Nurses Working in Selected Hospitals at Bangalore

https://ijphs.iaescore.com/index.php/IJPHS/article/view/4602
Jemy Joseph
The neonatal unit frequently occupied by newborns that are marginally viable or critically unwell and could be considered as terminally ill. It is a busy, highly technical environment with advanced life saving medical equipments, at its disposal. The technology has had a profound effect on neonatal nursing practice. The escalation of technology and medical advances has been followed by an increase in later disabilities. Many devices have altered from being one of the supporting clinical practices to that of being an essential requirement in treatment delivery. Even after the use of all settings.  Some newborns will die in the NICU. The mortality and morbidity rate is still high. This has given rise to many ethical issues including withdrawal of intensive care therapies. The conceptual framework for the study is based on Health Belief Model. Health Beliefs are person’s knowledge, ideas and attitude, about health and illness. In this study various literature was reviewed which includes, the research design selected for the study was Descriptive research design. The dependent variable and independent variable were selected for the research.DOI: http://dx.doi.org/10.11591/ijphs.v2i2.2779
Volume: 2
Issue: 2
Page: 67-74
Publish at: 2013-06-01

Distributed Control System in Electrical Heaters of the Public Buildings

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2338
Jianhua Ren , Wei Wang , Tingchao Yang
Being with many advantages such as environmental protection, controllable, facilitate measurement etc, electric heating has been promoted actively in some places .For public buildings with huge energy consumption, electric heating intelligent controlling may be the key to achieve energy conservation. In this paper, visual distributed control system (DCS) was presented in electric heating of the public buildings. In this control system, a PC was used as the host, and RS232/485 interface converter was used as serial interface of mutual conversion .Through industrial standard RS485 bus with high reliability and low cost which was the link between the host and many sets of thermostat, a one-to-many communication network was formed. The MCU of the thermostats was ATMega8 microcontroller. Meanwhile, DS18B20 integrated temperature probe was used in temperature sensor .Through the DCS test online,it met the need of each individual heating unit. Therefore, unnecessary heat waste was reduced, heating costs were saved. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2660
Volume: 11
Issue: 6
Page: 3142-3148
Publish at: 2013-06-01

Eliminating Noise of Mud Pressure Phase Shift Keying Signals with A Self-Adaptive Filter

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2321
Yue Shen , Lingtan Zhang , Heng Zhang , Yinao Su , Limin Sheng , Lin Li
The feasibility of applying a self-adaptive filter to eliminate noise in the downhole mud pressure phase shift keying (PSK) signals is studied. The self-adaptive filter with carrier wave as the filter input signal and mud pressure PSK signal including noise as the filter expected input signal in structure was adopted to process the mud pressure PSK signals with the broadband signal characteristic in communication. Mathematical model of the filter was built to reconstruct the mud pressure PSK signals based on the evaluation criterion of least mean square error (LMS) and the mathematical model of mud pressure PSK signals. According to the filter mathematical model, a special self-adaptive control algorithm was adopted to realize the filter by adjusting the filter weight coefficients self-adaptively and the impacts of the filter step-size factor on signal to noise ratio (SNR) and distortion factors of the reconstructed mud pressure PSK signals were analyzed. Numerical calculation and simulation show that the self-adaptive filter can efficiently eliminate random noise in the signal frequency band and reconstruct the mud pressure PSK signals. In addition, low distortion factors of the reconstructed mud pressure PSK signals can be obtained by reasonable selecting the filter step-size factor. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2610
Volume: 11
Issue: 6
Page: 3028-3035
Publish at: 2013-06-01

Fan Fault Diagnosis Based on Wavelet Packet and Sample Entropy

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2382
Xiaogang Xu , Songling Wang , Jinlian Liu , Zhengren Wu
To accurately diagnose the mechanical failure of the fan, two diagnostic methods based on the wavelet packet energy feature and sample entropy feature are proposed. Vibration signals acquisition of 13 kinds of running states are achieved on the 4-73 No.8D centrifugal fan test bench. The wavelet packet energy feature vector of each vibration signal is rapidly extracted through the wavelet packet denoising, decomposition and reconstruction. The vibration signal wavelet packet energy feature vector of the five measuring points in the same instantaneous running state are fused into the fan fault feature vector. Finally, the fault diagnosis of the fan is achieved by using improved SVM (Support Vector Machine) classifier, and the accuracy rate is 94.6%. A new fan fault feature vector is put forward, which is the integration of the vibration signal sample entropy of the five measuring points in the same instantaneous running state, and then the fault diagnosis of the fan is achieved by using improved BP (Back Propagation) neural network, and the accuracy rate is 99.23%. The diagnostic results show that these two methods are able to effectively diagnose the category, severity and site of the fan mechanical failures, and suitable for online diagnosis. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2722
Volume: 11
Issue: 6
Page: 3451-3462
Publish at: 2013-06-01

Dopaminergic System: Selected Advances and Emerging Potential Therapeutic Targets

https://ijphs.iaescore.com/index.php/IJPHS/article/view/4603
Abdelaziz Ghanemi
Studies on different physiological and pathophysiological properties of the dopaminergic system have led to novel evidences and theories that suggest the possible targeting of such system in a variety of pathologies and disorders. Herein, we illustrate the applications and the therapeutic importance that such findings and advances might have. We hope that the content of this work will guide researches devoted to dopaminergic aspects that combine neurosciences with pharmacology.DOI: http://dx.doi.org/10.11591/ijphs.v2i2.3070
Volume: 2
Issue: 2
Page: 75-82
Publish at: 2013-06-01

Decoding of PDF417 barcode in Identity Authentication Based on LabVIEW

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2318
Qian Song , Li Liu
Two dimensional barcode had widely applied in identity authentication. In this paper, the symbol structure of PDF417 barcode was introduced, and the image processing methods used in PDF417 barcode recognition were researched. A quick and effective method to calculate the width of the unit module in PDF417 barcode was proposed, and a recognition and decoding system of PDF417 barcode based on software development platform of the LabVIEW virtual instrument was designed and implemented. The system could process and analyze the images containing PDF417 barcode collected by camera in real time, and achieve the fast and omnibearing decoding of the barcode. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2607
Volume: 11
Issue: 6
Page: 3005-3011
Publish at: 2013-06-01

Design of the Glass Batching-Material System Based Fuzzy-PID Combined Control

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2363
Zhisong Hou , Yanchang Liu , Qigao Feng
According to the traditional control methods of batching-material system exists defects low precision and bad real-time, this paper has proposed the combined control algorithm. This paper has designed a Fuzzy-PID control Glass batching-material system by using of combining the traditional PID and the Fuzzy control algorithm. The system uses expert system of online learning and adjusts automatically the control parameters, realize the best combination controlling precision and speed. The actual operation result of the system has proved the feasibility and validity of the Fuzzy-PID combined control. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2689 
Volume: 11
Issue: 6
Page: 3321-3326
Publish at: 2013-06-01

Cytokine Estimation in Chronic Viral Hepatitis with Autoimmune Impairments

https://ijphs.iaescore.com/index.php/IJPHS/article/view/4599
Umida Nabieva , Adolat Ismailova
The pattern of autoimmune impairments was studied in patients with chronic viral hepatitis in association with the level of inflammatory cytokines and interferon status. Study was conducted in groups of patients with various levels of the detected autoantibodies to ssDNA. Autoantibodies to ssDNA were found in 37,7% of patients with HCV. In the group of HCV patients with autoimmune disorders, the levels of the cytokines and interferon levels were considerably higher than those in the group of patients without associated autoimmune diseasesDOI: http://dx.doi.org/10.11591/ijphs.v2i2.2438
Volume: 2
Issue: 2
Page: 39-42
Publish at: 2013-06-01

A Practical Application of IMC-PID Controller in Unmanned Vehicle

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2350
Qin Gang , Song Le , Hu Ling
In allusion to unmanned vehicle steering control of the brushless DC motor control system, traditional PID controller parameter adjustment complex, weak ability to adapt to the environment and other issues, on the basis of the analysis of internal model control and classical PID control internal corresponding relationship, comprehensive its advantages, The design uses a brushless DC motor in the steering control system for unmanned vehicles based on the internal model PID controller ( IMC-PID) for speed. Based on the build object theoretical model, online simulation controller show that, for the design objects, based on the internal model PID controller whether the system step response or disturbance tracking control effect can reach the classic PID control requirements, also reduces the complexity and randomness of the design parameters. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2673
Volume: 11
Issue: 6
Page: 3228-3235
Publish at: 2013-06-01

Goal-based hybrid filtering for user-to-user Personalized Recommendation

https://ijece.iaescore.com/index.php/IJECE/article/view/5456
Muhammad Waseem Chughtai , Ali Bin Selamat , Imran Ghani
Recommendation systems are gaining great importance with e-Learning and multimedia on the internet. It fails in some situations such as new-user profile (cold-start) issue. To overcome this issue, we propose a novel goalbased hybrid approach for user-to-user personalized similarity recommendation and present its performance accuracy. This work also helps to improve collaborative filtering using k-nearest neighbor as neighborhood collaborative filtering (NCF) and content-based filtering as content-based collaborative filtering (CBCF). The purpose of combining k-nn with recommendation approaches is to increase the relevant recommendation accuracy and decrease the new-user profile (cold-start) issue. The proposed goal-based approach associated with nearest neighbors, compare personalized profile preferences and get the similarities between users. The paper discussed research architecture, working of proposed goal-based approach, its experimental steps and initial results.DOI:http://dx.doi.org/10.11591/ijece.v3i3.2419
Volume: 3
Issue: 3
Page: 329-336
Publish at: 2013-06-01

Luminescence Properties of Eu2+ and Mn2+ Doped Sr2MgSiO5 Phosphors

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2329
Pan Zhou , Dawei He , Yongsheng Wang , Haiteng Wang , Hongpeng Wu
Eu2+ions doped Sr2MgSiO5 phosphors, and Eu2+- Mn2+ions-doped Sr2MgSiO5 phosphors were prepared via high-temperature solid state reaction method and sol-gel process, respectively. Luminescent mechanism and characteristics of all samples were studied. The results showed that lattice structure of Eu2+ ion-doped Sr2MgSiO5 samples was pyramidal system. The influence of flux on luminescence properties of Eu2+ ion-doped Sr2MgSiO5 phosphor was studied. The results of spectral analysis showed that flux changed the emission intensity of Sr2MgSiO5: Eu2+ samples at different wavelengths. Emission wavelength and relative intensity of the samples changed. In order to study the luminescence properties and energy transfer between Eu2+ and Mn2+, Eu2+ ions and Mn2+ ions co-doped samples were prepared. The results showed that excitation bands of the samples ranged from 250nm to 450 nm. When excited at 365nm, the emission spectrum of the samples consisted of three bands: blue, green and red, respectively. When Eu2+ ions and Mn2+ ions co-doped, the energy of Eu2+ ions was transferred to Mn2+ ions, which made Mn2+ ions became luminescence center in Sr2MgSiO5host. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2642
Volume: 11
Issue: 6
Page: 3087-3091
Publish at: 2013-06-01

Investigation of electricity production feasibility in Tabriz using biomass resources

https://ijece.iaescore.com/index.php/IJECE/article/view/5467
Mahin Tahmasebpour , Abdollah Jafarian
In this research, the feasibility of biogas production using biomass in collected wastes is studied. In this paper, first the different methods of recycling energy and for most used algorithms are studied. Second, by analyzing daily collected wastes and considering the realistic obtained data from leachate of Tabriz waste landfills, the average amount of Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) are obtained. Then, an appropriate scenario is presented to get the maximum reachable biogas. Also, an economic model taking into account the effect of main variables of preparations such as the cost of waste transport vehicles, capacity of the purchased devices, special costs of biomass and distributed density are considered and the best and most economical method is utilized based on generated gas volume in biomass power plants. Finally, the shortterm and long-term models are presented for power generation and investment using biogas. The proposed method is applied for the wastes of Tabriz City, as one of the largest industrial metropolitan in Iran, with a daily waste more than 1200 tons.DOI:http://dx.doi.org/10.11591/ijece.v3i3.2622
Volume: 3
Issue: 3
Page: 415-422
Publish at: 2013-06-01

The Research of Welding Residual Stress Based Finite Element Method

https://ijeecs.iaescore.com/index.php/IJEECS/article/view/2339
Qinghua Bai
Welding residual stress was caused by local heating during the welding process, tensile residual stress reduce fatigue strength and corrosion resistance, Compressive residual stress decreases stability limit. So it will produce brittle fracture, reduce working life and strength of workpiece; Based on the simulation of welding process with finite element method, calculate the welding temperature field and residual stress, and then measure residual stress in experiments, So as to get the best welding technology and welding parameters, to reduce welding residual stress effective, it has very important significance. DOI: http://dx.doi.org/10.11591/telkomnika.v11i6.2661
Volume: 11
Issue: 6
Page: 3149-3158
Publish at: 2013-06-01
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