bluuebunny/crossref_metadata_2025 huggingface dataset:
Food, Wine … Heritage, Identity? Two Case Studies of Italian Diaspora Festivals in Regional Victoria
Authors: Laing Jennifer , Frost Warwick
Published: August 2013

Festivals have a particularly important role in rural areas struggling to arrest or prevent economic decline and seeking to develop vibrant, livable communities. Some of these places are looking to their immigrant past for inspiration, given that Australia has a rich history of immigrant
settlement in rural areas, and are developing festivals or events that leverage off a distinctive cultural heritage linked to a diaspora community. This article examines two Italian-themed festivals in regional Victoria, Australia, and their use of diaspora heritage as a source of distinctiveness
and potential competitive advantage for tourism purposes, as well as the role played by the diaspora-themed festivals in the local community. Findings, based on detailed semistructured interviews with 12 members of the organizing committees, and participant observation during site visits,
suggest that these events, while helping to shape a sense of community or place identity for these diaspora communities, also attract some tourists with little or no connection to the diaspora in question. The appeal of the events to ethnic "outsiders" lies in their perceived authenticity
and nostalgic references as well as the increasing allure of Italian culture and lifestyle. The article also provides an analysis of some of the challenges associated with theming a festival around diaspora heritage, including issues of contestation and measurement of its role in building
strong communities.
Enjoying Aeronautic Sports: A Strategic Plan for Hot Air Ballooning Development in Taiwan
Authors: Tsai Chiung-Tzu Lucetta
Published: August 2013

Hot air ballooning is a form of popular leisure activity in Taiwan owing to government support in promoting the activity. This study aims to address the opportunities and constraints facing the development of hot air ballooning as a leisure activity in Taiwan. In addition, the role that hot air ballooning might play in the development of tourism in rural regions of Taiwan is explored. The purpose of the study is to explore the constraints on Taiwan's development of hot air ballooning, analyze hot air ballooning trends in Taiwan, and discuss safety issues related to hot air ballooning.
Computational study of the rate constants and free energies of intramolecular radical addition to substituted anilines
Authors: Gansäuer Andreas , Seddiqzai Meriam , Dahmen Tobias , Sure Rebecca , Grimme Stefan
Published: August 2013

The intramolecular radical addition to aniline derivatives was investigated by DFT calculations. The computational methods were benchmarked by comparing the calculated values of the rate constant for the 5-exocyclization of the hexenyl radical with the experimental values. The dispersion-corrected PW6B95-D3 functional provided very good results with deviations for the free activation barrier compared to the experimental values of only about 0.5 kcal mol−1and was therefore employed in further calculations. Corrections for intramolecular London dispersion and solvation effects in the quantum chemical treatment are essential to obtain consistent and accurate theoretical data. For the investigated radical addition reaction it turned out that the polarity of the molecules is important and that a combination of electrophilic radicals with preferably nucleophilic arenes results in the highest rate constants. This is opposite to the Minisci reaction where the radical acts as nucleophile and the arene as electrophile. The substitution at the N-atom of the aniline is crucial. Methyl substitution leads to slower addition than phenyl substitution. Carbamates as substituents are suitable only when the radical center is not too electrophilic. No correlations between free reaction barriers and energies (ΔG‡and ΔGR) are found. Addition reactions leading to indanes or dihydrobenzofurans are too slow to be useful synthetically.
La télé‑administration : un rouage économique et démocratique pour l'Union européenne ?
Authors: Beauchesne Bénédicte
Published: August 2013

Résumé Le développement des réseaux transeuropéens de communication a placé les télé‑administrations nationales au cœur de l’action multiforme menée par l’Union européenne. Désormais considérés comme un levier économique et un facteur de croissance essentiels pour l’Europe, des télé‑services ont également été mis en place par les institutions communautaires. Se posant en modèle, la Commission leur prête un rôle démocratique ne correspondant pas toujours à la réalité.
Extraqual : l'extranet de la qualité et de la simplification du droit
Authors: Cottin Stéphane
Published: August 2013

Résumé Le secrétariat général du gouvernement français a ouvert depuis mai 2010 un extranet dit « de la qualité et de la simplification du droit » ou Extraqual . Cet extranet met à disposition de l’ensemble de l’administration centrale des tableaux de suivi, des guides de bonnes pratiques et des espaces d’information sur les diverses étapes de l’activité normative : depuis l’élaboration des études d’impact jusqu’au suivi de l’application des lois, en passant par l’aide à la rédaction (légistique) et la publication des normes. Site d’accompagnement et de promotion des meilleurs usages, cet espace collaboratif numérique est un outil désormais reconnu et utilisé par tous les acteurs de la chaîne de production normative. Il a acquis une grande importance dans le travail des directions des affaires juridiques des ministères ou dans la communauté SOLON (Système d’organisation en ligne des opérations normatives).
Les mots de la modernisation des relations administratives
Authors: Koubi Geneviève
Published: August 2013

Résumé L’administration électronique ou numérique engage autant les administrés que les administrations. Or, pour certaines de ses réalisations, le choix du terme de téléservice conduit à mettre en exergue les mesures prises pour la simplification des relations entre administrations et administrés. La distinction entre services en ligne, services à distance et téléservices permettrait de distinguer d’une part la confirmation de la réduction du service public à la prestation et, d’autre part, la consolidation de la rhétorique d’un usager non plus acteur mais assujetti.
Analyse du rôle opératoire des téléservices en tant qu'instrument d'explicitation
Authors: Legrand Jacky
Published: August 2013

Résumé Les téléservices contribuent à l’émergence de l’administration électronique. Ils permettent d’étendre la signification donnée actuellement par l’administration et le droit à la « relation avec les usagers ». Les téléservices nourrissent la réflexion sur les effets d’une technologie qui s’est intégrée à la vie quotidienne. Grâce aux téléservices, le service public s’offre un accès à l’usager et passe de la séduction à travers les technologies de l’information et de la communication à la séduction à l’aide des technologies de l’information et de la communication. La notion de micro‑persuasion, en tant qu’influence induite par la technologie elle‑même, permet d’étudier les modifications d’attitude du nouvel usager en interaction et connecté. La notion de macro‑persuasion, en tant qu’intention de modifier les comportements par un outil dédié, permet d’étudier la dématérialisation de la relation sociale.
Télémedecine et téléservice public
Authors: Renaudie Olivier
Published: August 2013

Résumé La télémédecine, entendue comme une forme de pratique médicale à distance utilisant les technologies de l’information et de la communication, est généralement présentée par ses promoteurs comme un puissant levier de modernisation du système de soins. Elle n’en est pas moins à l’origine de nombreuses interrogations. Les premières sont relatives à sa qualification : il est ainsi permis de se demander si la télémédecine peut être considérée comme un téléservice public. Les secondes sont relatives à son régime juridique : on peut s’interroger sur le point de savoir si celui‑ci est à la hauteur des enjeux suscités par une telle activité.
Quelles possibilités offertes par l'analyse des big data pour améliorer les téléservices publics ?
Authors: Hamel Marie-Pierre , Marguerit David
Published: August 2013

Résumé En croisant les données de plus en plus considérables dont disposent les administrations, l’analyse des Big Data offre de nombreuses possibilités pour améliorer les téléservices publics. Cette contribution s’intéresse à ces développements qui permettent d’améliorer les services aux usagers et les performances des administrations publiques.
Web 2.0 Tools Adoption Model
Authors: Isaías Pedro , Coelho Fábio
Published: August 2013

The Internet has become a major sales platform, assuming an emergent importance in increasing the economic growth of businesses. Web 2.0 has been a very important change in the way people use the internet and it has created an impact in all sectors of society. This study emphasises the importance of including Web 2.0 tools in online retailing as a contribution for success. The focus of this research lies in Portuguese online retailers and the elaboration of an adoption model for Web 2.0 tools. Through an observation of the 36 most visited Portuguese e-Commerce websites, it was possible to gather information on their adoption patterns of these tools. Social networks, Rich Internet Applications, mashups and Really Simple Syndication were the most popular tools, while semantic search, wikis and blogs were the least implemented. These and other aspects were gathered and then used to build a Web 2.0 adoption model.
Challenges and Opportunities Related to Remote Diagnostics
Authors: Chowdhury Soumitra , Akram Asif
Published: August 2013

Remote diagnostics is expanding the business scope of vehicle manufacturers, ranging from products to services. In this paper, the authors focus on investigating the business challenges and opportunities related to the remote diagnostics of vehicles from an IT-based resource perspective. Remote diagnostics involves technology, human skills and intangibles. IT-based resources consist of physical IT infrastructure, human IT skills and IT-enabled intangibles. In this study, the authors find that remote diagnostics not only faces challenges in these three categories of IT-based resource, but also creates opportunities. One contribution of this paper is to provide an overview of the challenges and opportunities for business related to the technology. The paper also makes a contribution to information systems by shedding light on the discussion of digital infrastructure. It also highlights the application of IT-based resource perspective to find out the business challenges and opportunities of an emerging technology like remote diagnostics.
URL Manipulation and the Slippery Slope
Authors: Whitman Michael E. , Zafar Humayun
Published: August 2013

While computer ethics and information security courses try to teach computer misuse and unauthorized access as clear black and white examples, when examining the use and potentially misuse of URLs the discussion becomes less clear. This paper examines a number of computer use ethical scenarios focusing on the modification of URLs within Web browsers. Using the documented case of applicants to several Ivy-league schools as a discussion point, this paper presents a survey of U.S. students enrolled in information security and computer ethics classes, asking at what point does modifying the URL become hacking, and at what point does it become unethical. The findings of this study are discussed.
Telematics Business and Management in the Bahrain Market
Authors: Hussain Marwan Rajeh , Zainal Abduljalil , Elmedany Wael Mohamed , Fakhr Mohamed Waleed
Published: August 2013

The aim of this paper is to present and demonstrate the main challenges and obstacles facing Telematics companies entering the market in Bahrain. Telematics is part of Information and communication technologies (ICT) which plays a major role in the economic development of countries. However, there are many obstacles and challenges facing new businesses that venture into the small market of Bahrain; e.g. the small market size, competition and lack of financing channels (e.g. venture capital).
Modeling and Performance Studies of ATM Networks Over Voice and Video
Authors: Nisar Kashif , Sarkar Nurul I.
Published: August 2013

The Advanced Network Technologies is a research that investigates the technology(s) behind today’s modern networks and network infrastructures one of these technologies being Asynchronous Transfer Mode (ATM). Therefore, also focuses its attention on ATM. Dubbed “Modelling and Performance Studies of ATM Networks”; this research seeks to look at, and into, the impact of application segment length on the performance of an ATM network and the impact of traffic type data on the performance of an ATM network. To be able to examine an ATM network, we need to be able to simulate it somehow. This research, the authors have used the OPNET Modeler 14.0 simulation tool to create a network model that represents a real-life ATM network. And by actually simulating an ATM network at AUT University New Zealand, they can therefore change certain variables, and observe the effects the changes have on performance. As stated above, one of the impacts that will be explored is the effect that application segment length has on an ATM network. Thus, one variable that will be changed in our simulation is the segment length. This is the length of each packet segment that is sent through the network for a particular traffic type. The second impact to be inspected is the impact of different traffic types on an ATM network. For example, voice & video traffic should theoretically affect an ATM network
Multidispersion Soot Interference Mechanism on SO2 Concentration Using NDIR
Authors: Zhao Yan Jun , Cheng Shou Guang , Qu Bin
Published: August 2013

NDIR is one of SO2 concentration measurement methods. SO2 concentration can be figured out through measuring the infrared light intensity changing. The light intensity can be attenuated by the particles, so the SO2 concentration is increased. To solve the particles interference, the multidispersion particles interference mechanism is established. Particles characteristic parameters which interferes the SO2 concentration include the dissipativity, concentration, average size and size distribution parameters. Simulation results give the relationship between the SO2 concentration and particles characteristic parameters. The method to reduce the interference of the SO2 concentration is brought out and the measurement accuracy can be improved.
Modeling of Engineering Ceramics Grinding Surface Residual Stress
Authors: Liu Wei Xiang
Published: August 2013

Because of hard and brittle properties of ceramic materials, grinding and polishing the surface is the main processing methods, after grinded and polished, ceramics surface appear residual stresses and resulting in the cracks. Ceramic grinding surface residual stress are caused by machinery and thermal stress, residual stress generation mechanism is due to the combined effection under various stress, the workpiece transient temperature field can be calculated by triangle moving heat source model, the stress-strain relationship can be carried out in plastic region. according to the relationship between displacement increment and strain increment, can calculate element strain rate,in strong grinding, due to heat transfer time increases and the contact arc length increases, the maximum temperature is proportional to the available between the unit width and grinding ratio contact length, two regression method is used in study the effect of grinding parameters on surface residual stresses.
Research on Photovoltaic Industry with the MPPT Algorithm in PV System
Authors: Shen Shi Die , Yao Wei
Published: August 2013

In this paper, photovoltaic industry is introduced briefly. For the shortcomings of the fixed-step perturbation and observation (P&O) method in the maximum power point tracking (MPPT) technology, a variable-step P&O method is proposed and the algorithm is further improved. In the PV system, the MPPT is realized by changing the duty cycle of switching tube in the Boost converter. The simulations were conducted in the Matlab/Simulink platform. At last, the experimental results on the 3kw prototype showed that the new MPPT algorithm is effective.
Experimental Study of Resonant Frequency Tunable Piezoelectric Energy Harvester
Authors: Zhang Xiao Yi , Kan Jun Wu , Liu Dian Long , Wang Shu Yun
Published: August 2013

Abstract. To improve energy harvesting performance, a resonance frequency tunable piezoelectric (PZT) energy harvester for vibrating applications was presented and investigated experimentally. A piezoelectric vibrational energy harvester (PVEH) consisted of a piezo-cantilever with a permanent magnet at its free-end and another excitation magnet fixed on vibration structure. The two magnets are placed with the same magnetic poles facing each other to produce repulsive force. The cantilever has dimensions of 70x10x0.6mm3, clamped 10mm, and two magnets sized ø10x4mm3. The testing results show that the magnetic force, denoted by the initial separated distance between the magnetic dipoles (SDMD), exerts great influence on the generated performance. With the SDMD increasing from 15mm to 40mm, the generated voltage rises from 24.4V to 40V, and the resonant frequency increases from 33.75Hz to 38.75Hz.
Manufacturing Process Design Based on Mental and Physical Workload Analysis
Authors: Ma Qing Guo , Sun Xiao Li , Fu Hui Jian , Zhao Da Chun , Guo Jun Feng
Published: August 2013

Human factor is an important issue in industrial engineering system. Mental and physical states in the manufacturing process greatly influence workers performance. In this study, EEG data were recorded to analyze mental workload and EMG data to analyze physical workload when a worker was tasks in the production line. Video camera was used to record the manufacturing process simultaneously. We could detect the time periods within which the workers mental workload or physical workload was at a high level. By tracking the operating process through the video, we were able to find the potential problems leading to high workload, and thus optimize the design of manufacturing process or machine in order to decrease mental and physical workload and improve production efficiency.
A Model of Weight Absolute Grey Correlation Degree for the Transformer Bushing State Assessment
Authors: Gu Rong , Yuan Jin Sha , Lv Fei
Published: August 2013

Accurate assessment for the operational status of the transformer bushing is not only a prerequisite for the implementation of condition-based maintenance, but also to ensure the normal operation of the transformer and the whole power equipment conditions. In the paper, a model of weight absolute grey correlation degree was used to assess the transformer bushing state. Firstly, determined the assessment indicators and handled them. Secondly, the weights, correlation coefficients and each association were calculated. Thirdly, to compare the largest association of assessment indicators in grades as the transformer bushing final run state. Finally, give the state assessment results, according to the remark set. The result shows the model works well.
The Analysis of the Automatic Steel Drum Tilter
Authors: Yu Xiao Guang , Tan Chuan , Liao Gui Bing
Published: August 2013

In order to meet the requirements of a steel drum manufacturing plant on steel drums flip using traditional design methods design the steel drums flipping machine. The finite element analysis method to flip the frame and the strength of the drive shaft. Flip frame analysis results obtained displacement, the stress distribution diagram, the maximum stress of 41.361MPa, and the stress concentration point to flip the frame and at the connection of the link plate. Analysis the shaft torsional displacement, stress and its former fifth-order natural frequencies and mode shapes, after optimization analysis of the shaft, the quality of the drive shaft is reduced by about 13.49%, and to identify the best hollow radius R1 = 15.035mm.
Finite Element Analysis of the Frame of Straightening Machine with Twelve Rolls for Tubes
Authors: Zhang Bai Sen , Song Jin Chun , Ren Guang An
Published: August 2013

The frame of a straightening machine is a body of the equipment, and bears all loads exerting on the machine. It is necessary for the frame to have strong strength and stiffness so that the machine can work under normal condition. What is more, because control technology for a hydraulic or servo system is applied to this equipment, it is also necessary to understand the variation laws of frame under loads, so that the effects of pressure protection and position control of rollers could be better and the laws could be provided for designing control system. In this paper, the deformation maps of the frame under loads are got by finite element analysis, distribution laws on stress and displacement of the frame are obtained when it is working, and suggestions are proposed for improving the functions of frame and quality of tubes.
Optimization of Injection Molding Process Parameters with Material Properties Based on GA and BP
Authors: Tan Xiao Hong , Wang Lei Gang , Wang Wen Shen
Published: August 2013

To obtain optimal injection process parameters, GA was used to optimize BP network structure based on Moldflow simulation results. The BP network was set up which considering the relationship between volume shrinkage of plastic parts and injection parameters, such as mold temperature, melt temperature, holding pressure and holding time etc. And the optimal process parameters are obtained, which is agreed with actual results. Using BP network to predict injection parameters impact on parts quality can effectively reduce the difficulty and workload of other modeling methods. This method can be extended to other quality prediction in the process of plastic parts.Keyword: Genetic algorithm (GA);Neural network algorithm (BP);Injection molding process optimization;The axial deformation
Shock Test and Acceleration Analysis Methods of Marine Diesel Engines to Underwater Explosions
Authors: Zhao Jian Hua , Zhang Rui Bo , Zhu De Bin , Gao Hong Bin
Published: August 2013

Shock test of marine diesel engine is the important content for ship anti-shock research. Plentiful shock tests of equipments have been carried out abroad, but there is no detailed test methods of diesel engine. According to simulation results, 8-channel acceleration test points are determined. Because diesel engine is working, the measured shock acceleration is interfered by vibration signal. Orthogonal wavelet decomposition and wavelet noise reduction methods are used to separate shock component from test results. The seperated shock component consists of two parts. One is the low-frequency part caused by the shock from diesel foundation and then attenuation through the isolator, the other is the high-frequency part caused by the secondary shock of the retainer.
A Study of Innovative Product Design for Drinking Cups
Authors: Lin Rui Lin
Published: August 2013

This study adopted the team teaching method with a professional design teacher and a designer from the industry, to guide the freshmen of the Department of Commercial Design of a Technology University enrolled in the 2009-2010 academic year to perform innovative product design for drinking cups. The teaching and learning discussions of innovative design in the curriculum could help the students to think beyond traditional designs and come up with innovative design ideas for drinking cups for product development. The students design ideas integrated professional design esthetics and visual aesthetic elements and can be used as references for operators in the industry for future design and manufacturing, in order to change Taiwans traditional image in industrial design, create new esthetics of the design culture, and improve quality of life with new humane and social technology.
A Study of Computer Aided Design for the International Innovative Poster Competition
Authors: Xie Jing Chen
Published: August 2013

This study announced the competition rules of the Second International College Student Charity Advertising Festival held by the Beijing Union University through the teaching blog and Facebook and invited students from the Department of Department of Digital Media Design and the Department of Management of a Technology University in southern Taiwan to participate actively. Then, the cross-school team teaching method with two teachers was adopted to guide the students in the creative poster design competition with the topic of environmental protection and water resource conservation. During the time after school and the winter vacation, the students discussed their works with the teachers face-to-face through online video conferences and then made modifications on their works. The duration of this study was 8 weeks. A total of 2 representative works were selected to be submitted to the competition. This competition guidance method had a great influence on the students attitudes of active participation and is worthy to be continuously promoted in the future.
Determination of Electronic Conductance of 100 cm2 Single Molten Carbonate Fuel Cell
Authors: Milewski Jarosław , Bujalski Wojciech , Wołowicz Marcin , Futyma Kamil , Kucowski Jan , Bernat Rafał
Published: August 2013

This work considers electronic conductance in a molten carbonate fuel cell and consequences of its existence. The voltage characteristics of cells show differences between a theoretical maximum circuit voltage and open circuit voltage (OCV). A relationship is assumed between the OCV value and electronic conductance. Based on experimental measurements an appropriate mathematical model was created. The model is used to calculate the temperature dependence of electronic conductance for the most popular types of electrolyte: Li2CO3/K2CO3. The results obtained point to the possible existence of a very close relationship between electronic conductance and open circuit voltage. This relationship enables OCV to be calculated when electronic conductance is known. Appropriate formulae can be determined. Temperature is one of the factors affecting electronic conductance. Other influencing factors do exist, but their impact on OCV is not well known. This article mentions some of them.
A Localization Model Based on Irregular Quadrilateral for Wireless Sensor Networks
Authors: Shang Feng Jun , Gao Hong Xia
Published: August 2013

Localization is used in location-aware applications such as navigation, autonomous robotic movement, and asset tracking to position a moving object on a coordinate system. In this paper, we present a localization model based on the irregular quadrilateral in wireless sensor networks. Firstly, a quadrilateral-positioning unit is presented. It may prevent the unknown node falls into the external of positioning unit. Lastly, we use RSSI value to find the nearest reference sample nodes from unknown node, compared with the SBL localization algorithm, our algorithm improve the positioning accuracy. Theoretical analysis and simulation results show that the algorithm in wireless sensor networks and other location-based applications have a good effect.
3D Imaging of Bistatic Inverse Synthetic Aperture Radar Based on the Factorization Method
Authors: Wang Xin , Shang Chao Xuan
Published: August 2013

Based on the geometrical projection of 3D scattering centers on the line of radar sight, a new method of bistatic inverse synthetic aperture radar 3D Imaging is proposed. In the method, Range-Doppler algorithm gives a sequence of 2D images of target during its motion, and 3D reconstruction of target geometry is completed by the factorization method. We analyzed the theory of Bi-ISAR 3D imaging, deduced the process of the factorization method, and introduced the hierarchical reconstruction model. The simulation verified the validity of the paper.
The Design and Realization of Display and Control Terminal for Radar Echo Simulator
Authors: Jiang Heng , Liu Jing
Published: August 2013

In order to raise the train effect of radar operation efficiently, offer detailed, accurate, visual task situation information, high limit decreases or eliminates to train distorted and operating fault. The paper have put forward a kind of based on GDI + graph display function and USB data communication display the realization method of controlling terminal, Have realized for radar display relatively lifelike imitate, The interface that imitated has included actual radar, is major to display essential factor.
Study on a New Testing Method of the Elastic Modulus and Poisson's Ratio by Using Brazilian Disk Test
Authors: Wu Fei , Dong Shi Ming
Published: August 2013

In order to develop a new test method of the elastic modulus and Poissons ratio, based on the theoretical analysis of the Brazilian disk diametrically loaded by a pair of forces, the relationship is obtained between the total displacement of one point on the vertical direction of the load line and the applied force as well as the elastic modulus and Poissons ratio. The strain gauges with different length are used to measure the displacement of the corresponding point, and then the displacement is employed to calculate the elastic modulus and Poisson's ratio by using the theoretical formula. The proposed method can provide a new approach to estimate the elastic modulus and Poissons ratio by using Brazilian disk splitting tests.
Structure-Based Pharmacophore Models Generation and Combinatorial Screening of ICE Inhibitors
Authors: Zhang Yan Ling , Wang Yuan Ming , Qiao Yan Jiang
Published: August 2013

Eight structure-based pharmacophore models of Interleukin-1β converting enzyme (ICE) inhibitors were generated by LigandScout based on ICE inhibitor complexes from the Protein Data Bank (PDB). A combinatorial screening method based on multiple pharmacophore models were proposed in present study, since the binding pockets of different complexes were different, the structure-based pharmacophore models have a high specificity and cannot cover all the active molecules. Based on the screening results of MDDR and the metrics of E and A%, a new metric CAI (comprehensive appraisal index) was defined and used to determine the threshold of hit frequency of molecules which screened by the combinatorial screening method. According to the threshold, the potential ICE inhibitors were then identified from traditional Chinese medicine with the method of combinatorial screening with eight models. The molecules hit by not less than five pharmacophore models were taken as the screening objects of ICE inhibitor, and 781 molecules were obtained.
The Method for Estimating the Time to Failure in Accelerated Life Test
Authors: Chen Zhong Zhen , Xu Lu Tie
Published: August 2013

Accelerated life test was an important means to obtain storage reliability index of missile-borne photoelectric system. Because of difficulty to continuously test, the number of failure samples in the test range could be only got. Whether distribution intervals, logarithmic distribution or new failure time estimation method proposed in this paper such as range median distribution and the uniform distribution of the index had their applicable limitations. On the basis of comparison to Monte Carlo numerical simulation method, the characteristics of the applicability of the estimation method based on Weibull distribution were explored.
An Integral Method to Improve PLL Performance under Unbalanced Electric Grid Conditions
Authors: Yao Shu Jun , Bao Ming Ran , Hu Ya Nan , Han Min Xiao , Hou Jun Xian , Wan Lei
Published: August 2013

Accurate phase information on three-phase grid voltage and currents which are supplied by PLL are needed in power system operation. Conventional three-phase synchronous reference frame-based phase locked loop is generally sufficient during balanced operation conditions. But unbalanced in input signal set causes a double-frequency ripple. The output signal is not ideal. There are lots of improved SRF-PLL methods, aiming at removing the double-frequency ripple such as DSC-PLL,MAF-PLL, but these methods may causes a certain time delay. DIF-PLL method is based on adding another signal, which has reverse polarity ripple. It may amplify the harmonic signal. In this paper, an INT-PLL method based on integral is proposed, which wont amplify the harmonics. The comparison of these methods and simulation results are given in this paper.
Transmission Network Planning Model Considering Risk Constraint
Authors: Li Ying Zhi , Liu Wen Xia
Published: August 2013

This paper has discussed the treatment of uncertainty in the market environment, using chance-constrained programming to describe the risk and Monte Carlo simulation method to calculate the risk factor, the risk factor is bound to establish transmission network flexible planning model, the result is a transmission planning of minimum comprehensive cost under uncertain environment for the future program.
A Design of Safety Lock Testing Instrument Based on 89S52 Singlechip and LabVIEW
Authors: Tang Yan Kun , Yang Kun , Zhai Yan Nan , Zhang Hui
Published: August 2013

A design method of safety lock test based on 89S52 Singlechip is put forward and hardware structure and circuit scheme is introduced. Through the modularized design method of software, parameters of safety lock under different conditions are measured and quality test of safety lock is achieved.
Study on the Nth Best Relay Selection over Nakagami-m Fading Channels
Authors: Ouyang Yu Hua , Jia Xiang Dong
Published: August 2013

We study the Nth best relay selection schemes over independent and non-identically distributed (i.ni.d) Nakagami-m fading channels. For such opportunistic relaying schemes, we first obtain the closed-form expressions to the probability density function (PDF) and cumulative distribution function (CDF) of the instantaneous end-to-end signal-to-noise ratio (SNR). Then, with the obtained CDF and PDF, three main measurements are investigated, i.e., outage probability, average symbol error ratio (SER), and ergodic capacity. The numerical results show that the simulations match derivations exactly.
Task Download Technique Research of Ethernet Parallel System Based on Multi-DSP
Authors: Yang Yan Xin , Zou Huan , Zhang Xue Ping
Published: August 2013

In order to accomplish the real-time simulation application of embedded Ethernet parallel system, the DSP boot mode and the loading process are researched according to the analysis of the parallel simulation system structure and the basic characteristic of BF548 loader file structure. It has proposed a multiple-load method which is a kind of download method based on initialization code. Task program can automatic download after DSP launched in this way, and the problem of complex download procedure of DSP parallel system is solved. Through the actual test, the feasibility and validity of the download method have been verified, that provide a convenient and flexible experimental method and implementation technique of parallel simulation.
Spring Constant Measurement of Silicon Component in Watch Movement
Authors: Fu Yu , Xin Hao , Ma Guang Li , Du Ru Xu
Published: August 2013

Recently silicon components have been applied in mechanical watch movements. Among them, the silicon hairspring is the most attractive due to the significant improvement of accuracy and performance compared with the traditional material. However, the current device in production is unable to measure the spring constant which determines the timekeeping accuracy of the watch. This paper presents a method to measure the spring constant of silicon components. The setup is based on Variocouple with a force sensor. The data processing is realized by Matlab. The result shows that the spring constant is calculated rapidly and accurately.
The Research about Remote Transmit Manage Unit which is Based on ModBus Protocol
Authors: Wang Guo Jun
Published: August 2013

ModBus Protocol is researched and developed by MODICOM company which owns its copyright.The research about Remote Transmit Manage Unit applies the opened ModBus protocol. The text of protocol itself is very simple and can be easily obtained.The protocol is surpported by both domestic manufacturers and international manufacturers.According to the device which we will research,we apply a mini-subsets of Modbus protocol and dont realize all content
Research on the Security Technologies of Power Grid EMS Based on SOA
Authors: Lu Zhi Yong , Zhang Yi Jun , Yang Luan , Xu Shi Ping , Chen Yuan You
Published: August 2013

This article analyzes the accidents of power grid in some domestic region to discuss the security problems existing in the power grid Energy Management Systems (EMS). Combined with the security requirements of EMS, the method of improving EMS security based on SOA is proposed and the involving key technologies are studied as follows: the loosely coupled EMS based on SOA, the graded and modularity security configuration, the management of security configuration based on Concurrent Version System (CVS) and the mirror of Real-Time Databases (RTD) based on cloud computing. All the above technologies proposed in this paper greatly improve the security of EMS.
Study on the Physical Model and Experiments of MIMO Theory
Authors: Fu Hai Yang , Hu Bin , Jia Xiang Dong , Fang Hui
Published: August 2013

The present researches of the MIMO theory only proved that channel capacity (CC) could be increased on the setting mathematical model in base-band by the space division multiplex (SDM) principle. But the reasonable physical model matching to that mathematical model has not been given by those researches, resulting in that the SDM could not be realized in MIMO system. So that the CC formula of MIMO system deduced by that mathematical model could not be realized physically. The infeasibility of MIMO system would be discussed in the paper in the aspects of physical characteristic of antenna, radio beam patterns of many kinds of antenna array, the un-reasonability of the MIMO physical model, the experiments of MIMO, and etc.
Application of a Novel Modulation Scheme of PS-RZ-QPSK Signal in High-Speed Optical Transmission System
Authors: Xu Lei , Zhang Jin Nan , Zhang Yan Gan , Lin Mi
Published: August 2013

Modulation principle of dual-polarization quadratu-re phase shift keying signal and polarization-switched QPSK signal are demonstrated and advantages of PS-QPSK are proved in theoretically. A novel modulation scheme of PS-RZ-QPSK signal is proposed in this paper. The scheme reduces transmitter cost by less use of Mach-Zehnder modulator, but also presents similar performance as traditional structure for PS-RZ-QPSK. The simulate result indicates PS-RZ-QPSK can achieve a better transmission performance than DP-RZ-QPSK at the same bit rate (84Gb/s) and baud rate (28GBd), and proves showing the feasibility of novel modulation scheme.
The Study of Drive-Train System of Wind Turbines with DFIG
Authors: Xie Zhen , Lv Gao Fei , Teng Fei
Published: August 2013

In this paper, we focus on modeling, oscillatory stability analysis of the drive train system and the transient performances of wind turbine with doubly fed induction generator (DFIG) wind turbines, which are evaluated under sub-synchronous operation during the grid voltage fault. Results have shown that the oscillatory stability and shafting parameters have a close relationship, it is necessary to consider the drive train system while the transient performances of DFIG wind turbines are analyzed.
A Novel Multi-Dimension Force Platform Calibration Design and Error Analysis
Authors: Mao Z.Y. , Cai Ping
Published: August 2013

Multi-dimension force platform (MFP) is commonly used in human balance function assessment to measure the ground reaction force and the center of pressure (COP). For improving the precision of measurement and simplification the calibration process, this paper devised a generalized load calibration device which can calibrate six axis force simultaneously. Based on the load shift principle, the true loads in every axis were determined when a generalized load was applied on the platform. After experimental verification on force plate devised by our laboratory, the calibration matrix C was calculated based on least-squares approach. The result showed that the crosstalk was kept below the thresholds of most common, commercial force platform.
Reliability Analysis of Structured P2P System
Authors: Zhang Tai , Wang Sheng , Liao Dan
Published: August 2013

Reliability is most important for structured p2p systems and how to exactly evaluate the metric-loss rate which is tightly related to reliability is a hot topic and challenge. Many research works of the loss rate only consider the situation that the loss rate is caused by next hop node failure (NF). Indeed, the lost of queuing message (QF) on the failure node also contribute to the loss rate. This paper presents an analytical model of loss rate caused by NF and NQ. In order to achieve the optimal performance of system through minimizing the NQ, we propose two methods: process power enhancing (PPE) and Space Partition (SP). In the heterogeneous systems, we can obtain the minimal loss rate via improving each nodes process power; in the homogeneous structured p2p systems, the partition space method can evenly partition the ID space so as to ensure the traffic load is uniformly distributed over all nodes.
Research on the Lifetime Estimation of Secondary Connections Using the PRP M/G/1 Queuing Network Model
Authors: Maurice Junior Ekendeke Ndiomo , Guo Bin
Published: August 2013

Allocated Spectrum band has always been a limited resource; being later a more challenging issue due to the growth of user demands. The past decade is marked by important changes in spectrum access through especially cognitive radio technology. Here, spectrum access issue can be studied in all the different aspects of cognitive capabilities. This paper focuses on spectrum handoff in spectrum mobility. We will then study secondary connections behaviors after multiple interruptions providing from multiple secondary connections. In the IEEE 802.22 standards [, two Spectrum Handoff Sequences have been defined to characterize Secondary Connections behaviors after each Primary Connections interruption. These sequences are known as always-leaving and always-staying sequences. A recent analysis uses the extended data delivery time metric to analyze these Spectrum Handoff Sequences. It shows the exponential value of connections service time in the first sequence (always-leaving sequence) and in the other (always-staying sequence), the lack of fairness due to the acquisition of channels low-priority queue by the ongoing secondary connection (i.e. the secondary connection actually being served in the low-priority queue). Weve also noticed that the Extended Data Delivery Time is a good but limited metric because of the lack of prevision, which is a quality needed in cognitive radio networks, especially when implementing spectrum handoff sequences. Our present study aims to analyze these limitations. In what follows, we use the PRP M/G/1 queuing model in cognitive radio network to evaluate latency-sensitive traffic of Secondary Connections through a novel performance metric that we name Lifetime of Secondary Connections.
Data Mining Improves Pipeline Risk Assessment
Authors: Wang Bao Qin , Zhou Xu Yang , Zhang Wen Jing
Published: August 2013

Accidents to pipelines have been recorded and they often result in catastrophic consequences for environment and society with a great deal of economic loss. Standard methods of evaluating pipeline risk have stressed index-based and conditional based data assessment processes. Data mining represents a shift from verification-driven data analysis approaches to discovery-driven methods in risk assessment.
Research on Underwater Polarization Image Segmentation Inspired by Biological Optic Nerve
Authors: Wang Hui Bin , Wu Yu Rong , Shen Jie , Chen Zhe
Published: August 2013

Due to effects of the light by water and other particles, the quality of underwater image will degrade. The traditional underwater image segmentation methods based on intensity and spectrum have difficulty in determining boundary. Inspired by the visual system of mantis shrimps, this paper constructed a feedback neural network model, in which the parameters were optimized using machine learning method. Based on this model, we combine the polarization and intensity information to achieve the underwater polarization image segmentation. The results of experiment prove that the neural network model designed in this paper can improve the accuracy of underwater image segmentation.
The Experimental Teaching Based on Hybrid Cloud Management System Research
Authors: Chen Dong Lin , Chen Ling , Ji Qiao Fen
Published: August 2013

Cloud computing cost-effective, and scalable characteristics can be an effective solution to teaching college laboratory teaching uneven distribution of resources, updates slow, the shared low degree. Analysis of cloud computing at home and abroad in the application on the basis of education, the paper put forward and design college laboratory teaching management system based on hybrid cloud management function, and provide a good guide for colleges and universities to achieve cloud computing experimental teaching management.
A Service-Oriented Communication Architecture of Graphics Asset Management System
Authors: Wang Zi Jian
Published: August 2013

Database technology is of great variety, structure diversity, solving data integration and exchanges sharing of the heterogeneous database system have became the important problem in all fields. Because of XML is the very important data exchange technology to realize data exchange and transmission ability, this paper mainly explores the data exchange problem how to use XML in heterogeneous database system, , and .Net platform have good support to XML and heterogeneous database system, so the combination of XML and.net, can realize data exchange of heterogeneous database system.
A User Selection Algorithm Based on the Combination of Block Diagonalization and SLNR Maximization
Authors: Fu Wei Hong , Wang Cheng , Liu Nai An , Kong Qing Liang , Tian Wei Xin
Published: August 2013

In this paper, a new precoding scheme is proposed based on the combination of Block Diagonalization (BD) and SLNR (Signal Leakage Noise Ratio) maximization. Then a new user selection algorithm is proposed based on the joint precoding scheme. BD precoding will cause performance loss in the single antenna terminals when the number of terminal antenna is inconsistent. The algorithm we proposed can overcome the drawback by using the maximum SLNR for single-antenna users and BD precoding for multi-antenna users respectively. Simulation results show that the proposed algorithm will enhance the system sum-rate performance significantly when SNR (Signal Noise Ratio) over 5dB. The performance improves by 30% when SNR reaches 20dB.
The Research and Application of Heterogeneous Database Based on XML in Distance Education
Authors: Xia Yao Wen , Li Zhi Ping , Lv Sai Dong , Tang Guo Hua
Published: August 2013

this paper analyzes the problems of heterogeneous databases in a distance education system. It provides a heterogeneous database integration model based on XML and design and develop a heterogeneous database integration platform based on this model. Thus, it provides a unified standard and effective tool for teaching resource description and management in distance education.