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28,593 Article Results

A Brief Analysis into E-commence Website Mode of the Domestic Luxury

10.11591/ijeecs.v12.i8.pp6417-6422
Lu Lian
with the current prosperity of the luxury market, this paper focuses on e-commence market situation of China’s luxury, disintegrates all the parts during the process of the luxury’s e-commence online shopping, analyzes the three targets and three links of the current e-commence websites at the material level and finds out its appearing relevant problems. This paper also delves deeper and puts forward the online shopping mode at the spiritual level in order to bring some benefit to Chinese e-commence businesses.
Volume: 12
Issue: 8
Page: 6417-6422
Publish at: 2014-08-01

Strategies for FPGA Implementation of Non-Restoring Square Root Algorithm

https://ijece.iaescore.com/index.php/IJECE/article/view/5528
Tole Sutikno , Aiman Zakwan Jidin , Auzani Jidin , Nik Rumzi Nik Idris
This paper presents three strategies to implement non restoring square root algorithm based on FPGA. A new basic building block is called controlled subtract-multiplex (CSM) is introduced in first strategy which use gate level abstraction. The main principle of the method is similar with conventional non-restoring algorithm, but it only uses subtract operation and append 01, while add operation and append 11 is not used. Second strategy presents the first strategy in register transfer level (RTL) abstraction. In third strategy, a modification for the implementation of conventional non-restoring algorithm is presented which also use RTL abstraction. The all above strategies is implemented in VHDL programming and adopt fully pipelined architecture. The strategies have conducted to implement successfully in FPGA hardware, and each of the strategies is offer an efficient in hardware resource. In generally, the third strategy is superior.DOI:http://dx.doi.org/10.11591/ijece.v4i4.6008
Volume: 4
Issue: 4
Page: 548-556
Publish at: 2014-08-01

Assembly Sequence Planning for Products with Enclosed Shell

10.11591/ijeecs.v12.i8.pp6403-6410
Yan Song , Juan Song , Zhihong Cheng
Aiming at the special structure of products with enclosed shell, the limitations of the usual methods are analyzed and concepts of axial subassembly and radial subassembly are proposed, the subassemblies are identified base on the adjacent matrix and interference matrix. A new kind of assembly relation matrix with the subassembly information is proposed to express the assembly model，the assembly transition probability in the ant colony algorithm is modified based on the assembly relation matrix and assembly precedence relations. The assembly sequence of products with enclosed shell can be planned rapidly with the algorithm aforementioned. Finally, the effectiveness was verified by an example.
Volume: 12
Issue: 8
Page: 6403-6410
Publish at: 2014-08-01

Research on Electrical Energy Consumption Efficiency Based on GM-DEA

10.11591/ijeecs.v12.i8.pp5801-5806
Mei Liu
In today's environment which emphasis on energy efficiency, predicting the trend of electrical energy consumption efficiency, and researching the efficient operation model of power industry has practical significance. By establishing GM-DEA method system, we use GM model to predict four inputs and output indicators in 2011 and 2012 in Beijing first, and then use DEA to give predicting years a reasonable analysis for the efficiency of energy consumption. The result shows that efficiency of electrical energy consumption in Beijing is gradually increasing, GM-DEA model can analyze the trend of the efficiency effectively in advance, and it provides a scientific basis for the rapid development of power industry.
Volume: 12
Issue: 8
Page: 5801-5806
Publish at: 2014-08-01

Determination of Volume of Capacitor Bank for Static VAR Compensator

https://ijece.iaescore.com/index.php/IJECE/article/view/5518
Md. Ruhul Amin , Rajib Baran Roy
In high voltage AC system, the system voltage and frequency change rapidly with the variation of load. The reactive power also changes with the variation of load which affects the system voltage therefore it is necessary to analyze the power system in order to determine system parameters and its variation under various load conditions. The capacitor bank size is determined by calculating existing reactive power and required reactive power in system for Static VAR Compensator (SVC) is focused in this paper. Base case load flow is used to analysis power system. After identifying low voltage buses, arbitrary caciptor back is imposed in bueses and results are checked whether it is met or not in the system demand level. Here MATLAB coding is used to find the low voltage affected bus and automated calculation of capacitor back size is done by MATLAB also. The proposed method of identification of low voltage buses and determination of capacitor bank are faster and easier than the conventional method.DOI:http://dx.doi.org/10.11591/ijece.v4i4.5803
Volume: 4
Issue: 4
Page: 512-519
Publish at: 2014-08-01

Time-Weighted Uncertain Nearest Neighbor Collaborative Filtering Algorithm

10.11591/ijeecs.v12.i8.pp6393-6402
Zhigao Zheng , Jing Liu , Ping Wang , Shengli Sun
To overcome the limitations of the traditional collaborative filtering recommendation algorithm, this paper proposed a Time-Weighted Uncertain Nearest Neighbor Collaborative Filtering Algorithm (TWUNCF). According to the actual application situation of recommendation system, the author weighted the product similarity and user similarity to ensure the data validity firstly, and then calculate the similarities of user and product and choose the trusted neighbor group as the recommended object adaptively based on the weight. Experimental results show that the algorithm can be used to improve data validity according to the time attribute, and balance the impact the different groups on the recommendation result, and avoid the problems which caused by the data sparseness. Theoretical analysis and experimental demonstrations show that the algorithm this paper proposed outperforms existing algorithms in recommendation quality, and improve the system's accuracy and recommendation efficiency.
Volume: 12
Issue: 8
Page: 6393-6402
Publish at: 2014-08-01

A Novel Retinal Blood Vessel Segmentation Algorithm using Fuzzy segmentation

https://ijece.iaescore.com/index.php/IJECE/article/view/5534
Razieh Akhavan , Karim Faez
Assessment of blood vessels in retinal images is an important factor for many medical disorders. The changes in the retinal vessels due to the pathologies can be easily identified by segmenting the retinal vessels. Segmentation of retinal vessels is done to identify the early diagnosis of the disease like glaucoma, diabetic retinopathy, macular degeneration, hypertensive retinopathy and arteriosclerosis. In this paper, we propose an automatic blood vessel segmentation method. The proposed algorithm starts with the extraction of blood vessel centerline pixels. The final segmentation is obtained using an iterative region growing method that merges the binary images resulting from centerline detection part with the image resulting from fuzzy vessel segmentation part. In this proposed algorithm, the blood vessel is enhanced using modified morphological operations and the salt and pepper noises are removed from retinal images using Adaptive Fuzzy Switching Median filter. This method is applied on two publicly available databases, the DRIVE and the STARE and the experimental results obtained by using green channel images have been presented and compared with recently published methods. The results demonstrate that our algorithm is very effective method to detect retinal blood vessels.DOI:http://dx.doi.org/10.11591/ijece.v4i4.6253
Volume: 4
Issue: 4
Page: 561-572
Publish at: 2014-08-01

Proposing a Practical Method for Conceptual Design Process in New Product Development: Medical Glasses as a Case Study

10.11591/ijict.v3i2.pp80-87
Amir Mirzadeh Phirouzabadi
Nowadays,improving the quality of products, reducing cost and meeting customer’srequirements are necessary to shorten the time of new product development(NPD). NPD is used to describe the complete process of bringing a new product to market and conceptual design process(CDP) is at its early stage and has mostly changed from passive respond toaggressive one. Thus, this study proposed a practical method for CDP in NPDthrough three phases as Converting customers’ requirements to product specifications,Generating and selecting of concepts and Testing and finalizing the concepts byusing some different management-engineering techniques. Firstly, this papertried to prioritize customer’s requirements related to product by AHP (AnalyticHierarchy Process) and convert them to engineering parameters of TRIZ (Theoryof Inventive Problem Solving) in order to define the inventive principals.Next, based on QFD (Quality Function Deployment), we measured the weight valuesof inventive principals. Finally, as FMEA (Failure Mode and Effect Analysis)can analyze the weight values and reduce the sequential risk, then finalconceptual design was generated. At the end, a medical glasses was used as acase study of innovative design to validate the method and explain how thestrategies of this research for CDP.
Volume: 3
Issue: 2
Page: 80-87
Publish at: 2014-08-01

Film Thickness of Lithium Battery Fast De-Noising Based on Atomic Sequence Template Library

10.11591/ijeecs.v12.i8.pp6088-6093
Gong Chen , Xifang Zhu , Qingquan Xu , Ancheng Xu , Hui Yang
The natural frequency and scanning vibration frequency of C-dynamic scanning system of laser sensors are acquired for film thickness of lithium battery de-noising based on multi-resolution wavelet algorithm. For this reason, fast de-noising based on atomic sequence template library is present .First, under various mode of scanning, best atomic sequence template is built by sparse decomposition. Secondly, at the given mode, film thickness data is match to the best atomic sequence to de-nosing. Experimental results show that template-matching pursuit(MP) algorithm is effective and algorithm speed is higher than MP 57 times.
Volume: 12
Issue: 8
Page: 6088-6093
Publish at: 2014-08-01

ANFIS Based Approach to Estimate Remnant Life of Power Transformer by Predicting Furan Contents

https://ijece.iaescore.com/index.php/IJECE/article/view/5507
Priyesh Kumar Pandey , Zakir Husain , R K Jarial
Condition monitoring and diagnostic playing important role in estimating remnant Life of power transformer. Concentration of furan content in transformer oil can be a promising factor for indirect measurement of the aging of transformer insulation. The oil gets contaminated mainly due to prolonged operation and ageing. The present research paper introduces Adaptive Neuro Fuzzy inference system (ANFIS) technique to correlate furanic compounds obtained by High Performance Liquid Chromatography (HPLC) test to remnant life of the power transformer. The results are obtained by conducting HPLC test at TIFAC-CORE lab, NIT Hamirpur on thirteen samples of Power transformer oil taken from Himachal State Electricity Board Ltd, Shimla (India).DOI:http://dx.doi.org/10.11591/ijece.v4i4.5567
Volume: 4
Issue: 4
Page: 463-470
Publish at: 2014-08-01

Rules Mining Based on Rough Set of Compatible Relation

10.11591/ijeecs.v12.i8.pp6346-6353
Weiyan Xu , Ming Zhang , Bo Sun , Mengyun Lin , Rui Cheng
Rough set model based on tolerance relation, has been widely used to deal with incomplete information systems. However, this model is not so perfect because not all of the elements in a tolerant class are mutually tolerant, but they are all tolerant with the generating element of this class. To mend this limitation, the compatible relation is redefined, and then the concept of maximal complete compatible class in incomplete information system is presented for the purpose that any two elements in the same compatible module are mutually compatible. Furthermore, two methods are put forward in the interest of selecting optimal compatible class for an object, which can be used in knowledge reduction. Besides, coverings on universe produced by tolerance and compatible relations are deeply investigated and compared. Finally, a medical decision table is analyzed, some compact rules are mined.
Volume: 12
Issue: 8
Page: 6346-6353
Publish at: 2014-08-01

New Controllable Field Current Induced Excitation Synchronous Generator

10.11591/ijeecs.v12.i8.pp5905-5909
Bei Wei , Xiuhe Wang
The electrical machine using induced excitation system is a kind of brushless self-excited machine with low cost and high reliability, the induced excited machine would provide high power density at high-speed. But the low efficiency of the excitation system limits the development of this kind machine. Based on traditional excitation system, an improved construction induced excitation system is proposed in this paper. Adaptive control method is used to control the current direction in the stator auxiliary winding to replace constant DC excitation, the input current can change its direction according to the position of the rotor, the result is that all of induced currents at work in excitation system. Position sensors are fixed on the rotor and the stator field winding currents can synchronize with the rotor position according to the signal of the sensors. Experiments with the proposed structure are performed and compared with those of the traditional induced excitation system one. The results show that the new structure can improve the excitation system efficiency and reduce the cost.
Volume: 12
Issue: 8
Page: 5905-5909
Publish at: 2014-08-01

A CMOS-based Analog Function Generator: HSPICE Modeling and Simulation

https://ijece.iaescore.com/index.php/IJECE/article/view/5523
Madina Hamiane
In many Engineering applications, analog circuits present many advantagesover their digital counterparts and have recently been particularly used in awide range of signal processor circuits. In this paper, an analog non-linearfunction synthesizer is presented based on a polynomial expansion model.The proposed function synthesizer model is based on a 10th orderpolynomial approximation of any of the required non-linear functions. Thepolynomial approximations of these functions can then be implemented usingbasic CMOS circuit blocks. The proposed circuit model can simultaneouslysynthesize and generate many different mathematical functions. The circuitmodel is designed and simulated with HSPICE and its performance isdemonstrated through the simulation of a number of non-linear functions.DOI:http://dx.doi.org/10.11591/ijece.v4i4.5981
Volume: 4
Issue: 4
Page: 532-538
Publish at: 2014-08-01

The Intelligent Control System of the Freezing Station in Coal Mine Freezing Shaft Sinking

10.11591/ijeecs.v12.i8.pp5743-5750
Xiaoliang Zheng , Yelin Hu , Zhaoquan Chen
In order to address the issue of low degree of automation and huge waste of electric energy of the equipment in drilling engineering freezing station which adopts the freezing method of coal mine, we need to design an intelligent control system to control both the brine pump and double stage ammonia screw compressor. According to the actual cooling need in freezing project, this new system is able to adjust the working condition of the equipment so as to optimize the supply as needed. Also, the temperature and flow of the brine are controlled by fuzzy decoupling controller, and variable frequency controller is adopted in the brine pump to change the motor drive speed and finally adjust the flow of the brine appropriately, besides, the reasonable start-stop unit is used in the compressor to control the temperature of the brine. It has turned out that this intelligent control system features a better control performance, and thus has increased the automation level and prolonged the using life of the whole system as well as saved a large amount of electric energy and decreased the electricity cost of construction enterprises. 
Volume: 12
Issue: 8
Page: 5743-5750
Publish at: 2014-08-01

Minimum Eigenvalue Detection for Spectrum Sensing in Cognitive Radio

https://ijece.iaescore.com/index.php/IJECE/article/view/5550
Syed Sajjad Ali , Chang Liu , Minglu Jin
Spectrum sensing is a key task for cognitive radio. Our motivation is to increase the probability of detection for spectrum sensing in cognitive radio. In this paper, we proposed a new semi blind method which is based on minimum Eigenvalue of a covariance matrix. The ratio of the minimum eigenvalue to noise power is used as the test statistic. The method does not need channel and signal information as prior knowledge. Eigenvalue based algorithm perform better than energy detection for correlated signal. Our proposed method is better than the maximum eigenvalue and energy detection for correlated signal. We perform Simulation which is based on digital TV signal. In all tests, our method performs better than maximum eigenvalue detection and energy detection.DOI:http://dx.doi.org/10.11591/ijece.v4i4.6226
Volume: 4
Issue: 4
Page: 623-630
Publish at: 2014-08-01
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