bluuebunny/crossref_metadata_2025 huggingface dataset:
Direct Self-Control Strategy for Axial Flux Ironless Permanent Magnet Synchronous Motors Based on Duty Ratio Control
Authors: Wang Xiaoyuan , Wang Xiaoguang , Fu Tao
Published: January 2014

Axial Flux Ironless permanent magnetic synchronous motor (AFIPMSM) is a new permanent magnetic motor. It has many advantages, such as high torque-to-weight ratio, good efficiency, no cogging torque, and the sinusoidal back EMF. It gradually becomes the good choice in drive system. However, the small armature winding inductance causes the current is not continued with the PWM control based on VSI, it is a fatal shortcoming of the motor on the control. To solve this problem, a novel automatic control method based on a modified dc-dc converter is used to regulate the current. And the torque control rule is proposed to ensure the tracking of the torque-producing current of the AFIPMSM to the commanded value according to the motor rotor position under all operating conditions. Simulation and experimental results confirm the validity of the proposed control method.
The Design and Implement of Electrical Operator Monitoring System
Authors: Wan-Ye Yao , Teng-Zhong Sun , Xue-Li Jiang
Published: January 2014

Since the traditional electrical system data monitor equipment has some shortage, such as limited monitoring objects, single monitoring direction, the authors combine computer science Internet technologies with electric power system production process and extend the scope of monitoring system. This paper analyzes the key technology by which the operator monitoring system can be realized, and puts forward the scheme, which based on.NET platform, of recording operator’s behaviors during electric power generation, and it is implemented in WINDOWS system.
Finding Gems in Computer-Assisted Language Learning
Authors: Son Jeong-Bae , Rossade Klaus-Dieter
Published: January 2014

A large number of papers on computer-assisted language learning (CALL) are presented at international conferences such as the Globalization and Localization in Computer-Assisted Language Learning (GLoCALL) conference every year. Considering that diverse and innovative ways of using CALL technologies and techniques are reported through the papers, it should be meaningful to have a close look at them in order to see the flow of the development of CALL. This article attempts to explore some emerging trends, issues and topics discussed in the field of CALL by looking at papers presented at the GLoCALL 2011 and GLoCALL 2012 conferences and describing three papers selected for this Special Issue from the two conferences. It serves as an introduction to the Special Issue and an invitation to CALL researchers and practitioners to participate in finding real gems in CALL.
Research on System Architecture to Provide Maximum Security, End User Device Independency and User Centric Control over Content in Cloud
Authors: Marepalli Sai Manoj , Sultana Razia , Christ Andreas
Published: January 2014

Cloud computing is the emerging technology providing IT as a utility through internet. The benefits of cloud computing are but not limited to service based, scalable, elastic, shared pool of resources, metered by use. Due to mentioned benefits the concept of cloud computing fits very well with the concept of m-learning which differs from other forms of e-learning, covers a wide range of possibilities opened up by the convergence of new mobile technologies, wireless communication structure and distance learning development. The concept of cloud computing like any other concept has not only benefits but also introduces myriad of security issues, such as transparency between cloud user and provider, lack of standards, security concerns related to identity, Service Level Agreements (SLA) inadequacy etc. Providing secure, transparent, and reliable services in cloud computing environment is an important issue. This paper introduces a secured three layered architecture with an advance Intrusion Detection System (advIDS), which overcomes different vulnerabilities on cloud deployed applications. This proposed architecture can reduce the impact of different attacks by providing timely alerts, rejecting the unauthorized access over services, and recording the new threat profiles for future verification. The goal of this research is to provide more control over data and applications to the cloud user, which are now mainly controlled by Cloud Service Provider (CSP).
Design for Reuse in Business Process
Authors: Radgui Maryam , Saidi Rajaa , Mouline Salma
Published: January 2014

When modeling a business process or when updating an existing one, a business analyzer is available to reuse business parts already operational. Indeed, to minimize time of creation and to reduce cost and complexity, a solution can be given by the reuse of some existing business parts. The need to reuse of some business parts to fulfill companies’ requirements leads to the need of extracting business fragments from the business process model. The aim of this paper is to propose a method which enables to obtain a business fragments from a business process. The main idea is to decompose a business process into small fragments. These fragments have the ability to be reused for building a new business process or updating an existing one. The method the authors propose is presented as guidelines that allow the decomposition of business process to enable having a reusable business fragments, their method is based on variability in business process modeled in BPMN. The method also takes into account the business goal of each extracted fragment. The proposed method is presented as a process along with a meta-model to facilitate the understanding of the concepts related to BPMN. An algorithm that illustrates their method is also presented in order to use it for a further implementation. The paper also includes users’ experiments to validate our method.
The Application of Mobile Technology in E-Learning and Online Education Environments
Authors: Tsai Chia-Wen , Shen Pei-Di , Chiang Yi-Chun
Published: January 2014

In this paper, the authors reviewed the empirical mobile technology (MT) studies, and those focused on adopting and designing MT for students’ learning, published in SSCI journals from 2003 to 2012. It is found that the number of articles has significantly increased, particularly after 2008. Among the 74 published papers, most of them were conducted in higher education, as well as on computing domain. Furthermore, the quantitative research method was used more in MT and e-learning research. The findings in this study may provide potential direction and help policymakers in governments and researchers in professional organizations to allocate the necessary resources and prepare for supporting future research and applications of MT.
Environmental Turbulence and Complexity and the Optimal Degree of Internal Open Innovation for MNCs
Authors: Hausberg J. Piet , Valentino Alfredo , Sabini Luca
Published: January 2014

In today’s knowledge economy, it is vital for Multi-National Corporations (MNCs) to leverage all their globally dispersed knowledge resources. Extant literature argues that MNCs can be viewed as knowledge sharing networks and that knowledge exchange within the group enhances performance. This exploration of new knowledge through search among peer subsidiaries of the parent MNC can be regarded as Internal Open Innovation (IOI). However, literature on Open Innovation is largely focused on the external boundary of the firm, so that little can be said on whether openness towards corporate group internal knowledge sources is either or both, beneficial and/or detrimental, and how this depends on the difference of national industries and on the correct communication of these before the final transfer of knowledge. The principal research question thus is: To what degree should MNC subsidiaries be open to their intra-MNC peers given a common, evolving technological environment but different local market contexts? In this paper, the authors contribute with new propositions regarding this issue developed based on results from an agent-based model that is analyzed through computer simulation. The authors explore the degree of openness of MNC subsidiaries together with their communication competence in different organizational structures and environments, based on previous developments in theory of knowledge transfer and complexity as well as international business.
Improving Sequence Diagram Modeling Performance
Authors: Syn Thant , Batra Dinesh
Published: January 2014

The Unified Modeling Language (UML) has become the de facto standard for object-oriented software development. It has been widely adopted in both training and practice. However, UML has often been criticized for being overly complex and difficult to learn for novice analysts. Although some research studies have identified specific novice difficulties in learning UML, there is little research proposing viable techniques for addressing these difficulties. In particular, there is a lack of research evaluating the usability of the sequence diagram (SD), which models the interactions among objects of a software application. This paper reports a research study that proposes a technique called “CHOP” (CHunking, Ordering, Patterning), which is designed to improve novice analyst performance in modeling an SD. The CHOP technique is based on the Cognitive Load Theory (CLT) and was developed by addressing the three types of cognitive load encountered by novices. An experimental study testing the efficacy of the CHOP technique in comparison to the worked-example approach indicated that the CHOP technique significantly improves novice analyst’s ability to model interactions among objects; however, the worked-example technique was the more efficient during training. The study also found that subjects using the CHOP technique rated its perceived usefulness significantly higher than subjects using the worked-example approach.
The Thermal Characteristics of the Ball Screw Feed System on a Gantry Machine Tool
Authors: Liang Rui Jun , Ye Wen Hua , Chen Qun Qiang , Zhao Xin Jie
Published: January 2014

With the increasing of machine tool feed speed, a large quantity of friction heat is generated on the ball screw system and will cause the temperature rising and thermal deformation along the ball screw that reduces the machining accuracy. The heat accumulated and dissipated are calculated to load to the established model of the Y feed system on a gantry machine tool. The stable temperature field at thermal equilibrium and the unstable temperature field before thermal equilibrium or with the variation of thermal load are gotten. From thermal structure analysis, the thermal deformation is derived. The FEM model is verified by the experiments carried out under the same condition with the simulation.
Development and Application Road Testbench on Vehicle Hydraulic Power Steering System
Authors: Chen Yong
Published: January 2014

In order to study operation characteristic of the hydraulic power steering (HPS) system, a data gathering system, based on the testbench, was designed to test HPS system operating on-road. By using various kinds of sensors, such as hydraulic pressure, fluid flow rate, steering torque, corner angle, angular velocity, vehicle speed, gyro sensors and so on, convert steering wheel angle, angular velocity, torque and other operation parameters into analog voltage signals, which provided to real-time data acquisition, storage and analysis. 11 physical quantities can be tested simultaneously, including steering system and operation parameters of vehicles. Different angular velocity of steering wheel speed and "S" shape road were tested on different vehicle speeds, and the result shows that the tests are in accordance with theoretical analysis, which proves the data gathering system's credibility.
Vibration Control of the Flexible Robotic Arm through Modal Interaction
Authors: Gao Zhi Hui , Liu Bing Dong , Shan Bo
Published: January 2014

A vibration control method is proposed to suppress nonlinear large vibration of the flexible robotic arm undergoing rigid motion. The method takes advantage of modal interaction and is implemented based on internal resonance. To attenuate vibration of the flexible arm, another vibrating system, consisting of a rigid link, a flexible joint and a damper, is introduced as a vibration absorber. Perturbation technique is used to study the transient response of the nonlinear equations of motion. Numerical simulation results preliminarily verify that the proposed control strategy is able to effectively reduce vibration of the flexible robotic arm.
Object Trajectory Information for Robotic Service in Intelligent Space
Authors: Skulkittiyut Weerachai , Yamaguchi Toru , Mizukawa Makoto
Published: January 2014

Implementation of robotic service is needed extremely enormous of information including environment, place, user and object knowledge. It is extremely difficult for a robot to do tasks ordered by a human without having some basic knowledge or information. This paper proposes a method to create object knowledge focusing on an object and objects place relationship for the robotic service namely tidy-up service, in which a robot is asked to take objects such as books, cups, dishes on a table to appropriate places automatically. In details, as the first phase, we conduct a questionnaire to collect the trajectories in term of places of individual object from the participants. Based on the collected object trajectory information, we are able to build Markov chain model of the object which the states are possible places and transition probabilities are the probability that the object moved from one place to other places. In final, we are able to use the transition probability including the Markov chain model to predict and provide the next appropriate place. The result showed that the proposed approach is efficient in creating object trajectory as knowledge, hence, helping the robots to and to provide intuitive service.
A Fast Feature Matching Algorithm Based on Multi Scale Spatial Segmentation Technology
Authors: Li Shu Rong , Huang Yuan Yuan , Hu Zuo Jin
Published: January 2014

SIFT (Scale invariant feature transform) and correlative algorithms are now widely used in content based image retrieval technology. They compute distance and use neighbor algorithm to look for the optimal matching couples. The disadvantage of such way is high complexity, especially when huge amount of images need to be retrieved or recognized. To solve this problem, a new matching way based on feature space division under multi-scale is proposed. The algorithm will divide the feature space under multiple scales, so that those feature points which are located in somewhere can use a code to represent, and finally realize the matching through the code. Without calculating distance, the algorithm complexity is greatly reduced. Experiments show that, the algorithm keeps the matching accuracy and greatly enhance the efficiency of the matching at the same time.
Nano World: A Novel Path for Modern Drug Discovery
Authors: Ranjan Nishka , Reddy A.H. Manjunatha
Published: January 2014

The last two decades have witnessed a plethora of novel biomaterials that work significantly in the discovery of drugs and the point check of drugs, Biosensors. PLGA (Poly-(L-Lactide-co-glycolic Acid)), has already been shown to be a substrate for manufacture of substrates for OFETs, that in the future would be the forefront of electroceuticals. But, Polylactic Acid (PLA) derived and pegylated nanoparticles generated scaffolds, promote neural self-differentiation, nanowires derived from Polythiophene (PTs) can be utilised in the area of biosensors. Similarly, PT derived PEDOT:PSS(poly (3,4-ethylenedioxythiophene) poly (styrenesulfonate) polymer doped with appropriate cations is useful to manipulate directly the biological response of cells on the same grounds, organic electrochemical transistors (OECTs) based on PEDOTPSS coupled with bilayer lipid membranes (BLMs) were shown to act as ion-to-electron converters. A solid-state ion bipolar junction transistor (IBJT) has been developed to serve as a circuit element for neurotransmitter signal delivery. Consequently, the traditional drug discovery methods have far gone by. This era demands a much more modified and multiple disciplined methods for modern drug discovery. This review gives an insight and instance of this paradigm.
A Scalable Distributed System for Multi-User Virtual Environments
Authors: Wang Shao Rong , Dai Zhi Wei
Published: January 2014

Social information has multidimensional attributes. With the rapid growth of social information, it's harder and harder to organize, manage, and distribute these large scale information under virtual reality environments in traditional ways. This paper introduces the design and implementation of a social information distributed system based on a distributed virtual reality environment. It allows the users to post and receive social information, share photos, articles and videos with friends. The system is scalable, fault tolerant, and is capable of processing large scale data and supporting tens of thousands of online users.
A Novel Iso-Neigborhood Level Set Framework
Authors: Wang Shao Rong , Shi Xiao Long
Published: January 2014

Improved and extended level set framework with a novel iso-neigborhood concept. In the new framework, driving forces are determined by the iso-neighborhood rather than only by some exterior field outside the propagating fronts. This hybrid driving forces make the propagation of the active contour more robust. And furthermore the new framework will be very flexible to various kinds of images by defining different type of sampling algorithm in the iso-neighborhood.
Research and Development of a New Type of Iron Coated Nodularizer
Authors: Song Zhao Ding , Yu Hua Shun , Chen Xiao Li , Wang Lei , Wang Zhen
Published: January 2014

The magnesium alloys with rare earth element addition are widely used as nodularizer recently. However, the low absorption rate of Mg and lots of white smog during burning become critical issue. In this paper, a new type of iron coated nodularizer is developed to solve the above problems and reduce the production cost. The microstructure and mechanical properties also investigated.
Processing Relational Top-N Queries with Text and Numeric Attributes
Authors: Zhu Liang , Liu Bin , Liu Guang , Lei Quan Long
Published: January 2014

Relational top-N queries with both text attributes and numeric attributes are useful in many applications, by using the ranking functions based on both semantic distances for text attributes and numeric distances for numeric attributes. In this paper, we propose an approach for processing such type of top-N queries in relational databases. The basic idea of the approach is to create an index based on WordNet to expand the tuple words semantically for text attributes and on the related information of numeric attributes, meanwhile the size of the index increases linearly with the size of the database. The results of extensive experiments show that our method is efficient and effective.
Authentication Algorithm Based on Hash-Tree for Web Single Sign-On
Authors: Wei Qiang , Wu Ze Hui , Tao Rong Hua , Ren Dong
Published: January 2014

During the authentication process of web-based single sign-on system, it is insecure that all authentication messages are forwarded by the browser, and its integrity protection is not comprehensive. This vulnerability can be exploited by attackers to bypass the authentication systems, login any account. In this work we analyze the vulnerability threat model and its root causes in detail, and propose an authentication algorithm based on Hash-tree. This algorithm can not only improve the security of the system, but the processing efficiency of the system is also acceptable according to the simulation results.
Hydrocarbon Migration Mechanisms of Hailar - Tamsag Basin
Authors: Wan Yang , Zhang Yun Feng , Zhang Jing Yao
Published: January 2014

Based on the discourse of Hailar - Tamsag Basin description of hydrocarbon accumulation period and the distribution of hydrocarbon accumulation controlling factors, the paper pointed out Hailar - Tamsag basin specific landforms, which has significance to the study of ocean basins hydrocarbon migration mechanisms.
Study on Calculation Method of Formation Pressure Using Well Logging Data
Authors: Zeng Ke , Guo Fei , Zhang Mei Ling
Published: January 2014

Formation pressure Changes is the main reason for casing damage. In order to clearly know formation pressure,taking Sabei area of Daqing oilfield for example,On the basis of researching the relation between Formation pressure and logging data,By studying the relation between test data of ninety-three small stratum pressure and well-logging data with logging unit of water-out interval logging series of nine RFT test well, with statistical regression we come into being a theory model making use of water-flooded zone log reading to calculate formation pressure quantificationally .To improve the calculation accuracy of the formation pressure using logging data.
An Efficient Stream Cipher WG-16 and its Application for Securing 4G-LTE Networks
Authors: Fan Xin Xin , Wu Teng , Gong Guang
Published: January 2014

The fourth generation of mobile telecommunications system (marketed as 4G-LTE) is being commercially and widely deployed. Security mechanisms are crucial to protect communications of mobile users from potential malicious attacks as well as to ensure revenue for 4G-LTE network operators. The randomness properties of the keystream generated by the current cipher suites in 4G-LTE standard are difficult to analyze and some vulnerabilities with regard to the integrity algorithms have been recently discovered. To address those issues, we present a detailed specification and security analysis of a bit-oriented stream cipher WG-16 as well as the corresponding confidentiality and integrity algorithms in this paper. Our experimental results on smartphones and comparisons with the cipher suites in 4G-LTE standard demonstrate that WG-16 is a competitive candidate for securing the emerging 4G-LTE networks.
Research on Location-Based Personalized Recommendation System
Authors: Gao Huan , Tian Xi , Fu Xiang Ling
Published: January 2014

With the mobile Internet developing in China, the problem of information overload has been brought to us. The traditional personalized recommendation cannot meet the needs of the mobile Internet. In this paper, the recommendation algorithm is mainly based on the collaborative filtering, but the new factors are introduced into the recommendation system. The new system takes the user's location and friends recommendation into the personalized recommendation system so that the recommendation system can meet the mobile Internet requirements. Besides, this paper also puts forward the concept of moving business circle for information filtering, which realizes the precise and real-time personalized recommendations. This paper also proves the recommendation effects through collecting and analyzing the data, which comes from the website of dianping.com.
System of Fuzzy Duplicates Detection
Authors: Sharapova Ekaterina V. , Sharapov Ruslan V.
Published: January 2014

In the paper we discuss the problem of fuzzy duplicate detecting. There are given the basic approaches to detection of text duplicates. We review the existing methods of fuzzy duplicate detecting. There is presented algorithm of fuzzy duplicate detection. Algorithm is based on method of shingles. We describe modification of algorithm. We propose to consider not all text of document but its processed and filtered copy. There is presented the structure of system for fuzzy duplicates detection. System checks text duplications in the internal database and in Internet.
Fast Circular Object Detection Using Multiscale Grayscale Hough Transform
Authors: Yang Wen Xia , Huang Zhang Can
Published: January 2014

A fast Hough transform for circular object detection is proposed in this paper which can be directly applied to gray level images. This method consists of three major stages. In the first stage, the center positions of circular objects are detected using the gray level Hough transform, which requires no conventional preprocessing such as edge detecting and binarization. The second stage determines the radius of the detected objects by analyzing the radial gradient profile. In order to detect objects with different radius in the same scene, a multi-scale strategy is integrated in the proposed method. Compared with traditional Hough transform, the gray level Hough transform uses a 2-dimensional accumulation map rather than the 3-dimensional one, which results in a dramatic improvement on the computational efficiency. Experiments have been carried out on more than 2000 real-world images and the result shows that 90.3% of the circular objects have been accurately detected, which demonstrate the applicability of the proposed method.
Numerical Study of Buoyancy-Driven Oil Cluster Jumping in Porous Media by a Dynamic Pore-Network Model
Authors: Zhang Zhao Bin , Lin Mian
Published: January 2014

Buoyancy-driven oil cluster jumping in porous media is studied by a dynamic pore-network model in relation to secondary oil migration. The model has two novel aspects. First, inertia of fluid and surface roughness of throat are taken into account in simulating the jumping process. Second, a probability technique is proposed to let the model allow a longer time step. The numerical results indicate that the dynamic process of buoyancy-driven cluster jumping is caused not only by porous media heterogeneity, but also by fluid inertia and throat surface roughness. Pressure field characteristics in jumping are studied and a cluster-based pressure solving technique is proposed to reduce the computational demanding of pressure solving. Some statistical characteristics, include cluster size distribution and residual oil saturation, are also studied.
Monitoring Heart Rate and Body Temperature Using Wireless Technology (Zigbee)
Authors: Daud Hanita , Gulcharan Nurul Fauzana Imran , Azhar Mohammad Afham Mohd , Samsudin Muhammad Zulhelmi , Mohd Nor Nursyarizal , Ibrahim Taib
Published: January 2014

Wireless technology has increasingly emerged as one of the demanding technologies in healthcare industry. Monitoring patients’ condition is a crucial task in any hospital to ensure patients are in good and stable condition. Wireless sensor network is the solution and has been widely introduced in measuring vital signs of patients such as temperature, heart rate, oxygen saturation, respiratory rate and others from remote location. Zigbee Network or accurately known as IEEE 802.15.4/Zigbee on the other hand is known to be a low power consumption device with good and stable data transmission range, higher network flexibility and large number of nodes. This work is discussing on integrating heart rate and temperature sensors to a wireless transceiver Zigbee (Xbee) module and is used to measure patients’ conditions from remote location (nurse’s station). Series of tests have been conducted using these devices to measure patients’ heart rate and body temperature for different genders and age group at lying down position. This is to ensure that the devices developed are reliable, stable and producing the same results as conventional devices (thermometer and heart beat reader). Results obtained are very encouraging; the developed devices are producing stable readings and are capable of transmitting information at reasonable distance.
Fabrication of a Textile-Based Platform for Rapid Analyte Detection
Authors: Önder Sakip , Neşe Kök Fatma , Trabzon Levent , Kizil Huseyin , Kayaoğlu Burçak Karagüzel , Gocek İkilem
Published: January 2014

A novel textile-based analytical device with a simultaneous, rapid, sensitive and qualitative response for analyte detection that may have a potential use in different body fluids such as sweat, blood, saliva and urine is proposed in this study as an alternative to its paper-based counterparts. A porous polypropylene spunbond nonwoven was used as base fabric which is superior to paper with higher tear and crinkle resistance, flexibility and wearability.
The Study of Baseline Correction Method Using Energy Dispersive X-Ray Fluorescence to Detect Heavy Metals
Authors: Zhang Wei , Zhang Yu Jun , Chen Dong , Yin Gao Fang , Yu Xiao Ya , Gao Yan Wei , Gan Ting Ting
Published: January 2014

In order to overcome the baseline influence during the XRF spectra analysis, baseline deviation should be corrected. The multi-scale wavelet transform was used to remove the baseline in this paper. It is benefit that 5 decomposition levels should be selected. The whole channel was divided into several intervals. The initial interval width should be set 50. Scale coefficients were corrected according to the minimum value line. Then the scale and wavelet decomposition coefficients were reconstructed. The result shows that this method can remove the baseline effectively, especially for two sections viz. 0-400 and 1380-4095 channel.
Improved AdaBoost Based Infrared Object Detection Algorithm
Authors: Shi De Qin , Yang Wei , Wang Shu Ping , Lin Qin Ying
Published: January 2014

The traditional AdaBoost based object detection algorithm can get perfect performance for visible images, but not for infrared images because of the worse description of Haar features. In this paper, a novel infrared object detection algorithm based on improved AdaBoost with powerful histogram features is proposed. Firstly, HOG histogram with fourth grid area of image gradient is used for the input of classifiers. And then, AdaBoost with weighted FLD as weak classifiers is employed to select the multi-dimension features. Finally, the infrared object detection is realized by multi-scale sliding windows and non-maxima suppression algorithm. The experimental results demonstrate the better performance of the improved AdaBoost detection algorithm which can detect multi-scale infrared targets accurately.
Research of Fuzzy Neural Network in the Fault Diagnosis of Numerically-Controlled Machine Tool
Authors: Chen Xing Yun , Wei Jing Zi
Published: January 2014

At present, our rapid development of a processing industry requires the increasing number of numerically-controlled machine tool. At the same time, people grow the attention of diagnosing the fault in order to repair the machine one time. This article starts the research of fault diagnosis based on fuzzy neural network. At first, it evaluates the structure and learning method of fuzzy neural network. In the second place, this paper analyzes the numerically-controlled machine tool in details, and summarizes the fault and reason. At last, this article makes the comprehensive research of neural network and fault diagnosis and provides part of the code. It has positive guiding significance to the worker of numerically-controlled machine tool.
Experimental Study for Ultra High Strength Strapping Flat Steel
Authors: Li Feng , Zhou Fang , Yang Hong Gang , Lv Jia Shun , Zhang Leng , Wang Hong Ke
Published: January 2014

Ultra high strength strapping flat steel is used in packaging for papermaking, tobacco, compressed cotton and wool. At present, there is only one company can produce it by Lead bath quenching line. In this paper, the feasibility to produce new ultra high strength strapping flat steel of which tensional strength is 1350 MPa and elongation is 12% by continuous annealing process was investigated. The experiment result of steelmaking, hot rolling, pickling, cold rolling and continues heat treatment showed, the steel could be got using new chemical composition. The microstructure and X-ray diffraction spectrum of the steel showed, the steel was strengthened and toughened by martensite and retained austenite. The effect of continues heat treatment on microstructure and mechanical properties was discussed.
Theoretical Analysis and Experimental Study on Heat-Transfer in Cryogenic Gas Atomization Jet Cooling Nickel-Base Alloy
Authors: Guan Xiao Yan , Wu Ai Sheng
Published: January 2014

Based on the pool film boiling, Heat transfer coefficient and cooling model are established When fogdrop jet into cutting zone to cool high temperature wall. Through the transient experiment of cryogenic gas atomization jet cooling high temperature nickel-base alloy surface with different water dose. The water dose achieving the best cooling effect is 2 ml/min, 4ml/minand 6ml/min under the nickel-base alloy surface temperature at 300 °C, 500 °Cand 650 °C. Then the effect of water density to heat transfer coefficient is discussed. It is indicated that the water dose to the best cooling effect must be equivalent to the amount of water that materials can vaporize and participate in the phase-change heat transfer under certain temperature. When achieving optimal cooling effect, the number of fogdrops participating in phase-change heat transfer to cool high temperature wall are the most , and the heat transfer coefficient reaches the maximum.
Research of the Chemico-Mechanical Practices in Polymer Material Processing by Cutting
Authors: Cheng Guang Liang , Wang Xian Wei
Published: January 2014

On the basis of the analysis of phenomenon, taking place when polymer material are in aggressive mediums and on the basis of experiments chemical influence on polymer workplaces before by cutting was proved. The analysis of phenomena taking place when polymers interact with aggressive mediums has been made. Corresponding experimental research has been done and methods to direct changes of proceed material have been developed. The changes happen when the surface layer is processed preliminary to lower resistance to destruction of workpiece surface layer when it interacts with cutting instrument later.
Low Resistance Transparent Electrode
Authors: Jeong So Hyun , Kim Ju Youn , Yun Eui Jung , Bae Byung Seong
Published: January 2014

Transparent electrodes are used widely for the many kinds of devices. The most widely used material is ITO (indium tin oxide). The attempts to improve the resistance and flexibility have been tried. The low resistance can be achieved by increasing the thickness of the ITO; however, the increase of the thickness results in the decrease of the transmittance of the incident light. Therefore,decrease of the resistance is required without increase of the thickness. We investigated the effect of the metal material on the resistance of the transparent electrode. After deposition of the metal on the ITO, we investigated the resistance of the electrode after annealing. The lowest sheet resistance was obtained for the metal Mo after 500 °C annealing. The sheet resistance 25.6 Ω/ of the ITO was decreased to 9.6 Ω/ without any significant decrease of the transmittance.
Study on Application of Carbon Fiber Strengthen Thermoplastic Resin Composite Material
Authors: Sheng Yong Hua
Published: January 2014

Recently, as the development of thermoplastic resin with excellent property and forming process of thermoplastic resin composite material, research of thermoplastic resin becomes a hot issue in related areas. Comparing with common composite material, thermoplastic resin composite material has many advantages, such as, excellent impacting resistance and many processes. So, more and more researchers focus in thermoplastic resin composite material. In this article, applications of carbon fiber strengthen thermoplastic resin composite materials are comprehensive.
XPS Study of the Effect of Low Temperature Ammonia Plasma Treatment on PAN-Based Carbon Fiber
Authors: Zhu Nai Shu , Li Hong Ying , Wang Feng Xia , Dai Yin Suo
Published: January 2014

In order to obtain the maximum amounts of amino functional groups with low temperature ammonia plasma surface treatment on PAN-based carbon fiber, the influence of processing temperature and time were researched in this paper. By using X-ray photoelectron spectroscopy (XPS) method, the-NH2(-NH)/ C-C atomic ratio of untreated and treated fiber was analyzed. Results show that processing temperature is a key factor as intensity of the N1s peak increases gradually while processing temperature improves, furthermore, when temperature is 175°C, the most intensity of the N1s peak is obtained. Low temperature ammonia plasma surface treatment method has given a new approach to surface functionalized treatment of carbon fiber.
Capacitive Properties of Polyaniline/Nickel Hydroxide Composites Prepared by Using 4-Amino Thiophenol as the Structure Directing Agent
Authors: Huo Yu Qiu , Li Chang Hong
Published: January 2014

Polyaniline/Nickel hydroxide composites were successfully obtained on the Au substrate pretreated by 4-ATP. They were characterized by fourier transform infrared (FT-IR) spectroscopy and scan electron microscopy (SEM). The capacitance performance of PANI/Ni (OH)2composites were studied by cyclic voltammetry and galvanostatic charge/discharge. The specific capacitance of Polyaniline/Nickel hydroxide composite is up to 310 F/g at the current density of 1 mA/cm2in 1.0 mol/L Na2SO4solution. Electrode mass increases from 0.14 mg to 0.21 mg, specific capacitance decreases 7.7%. A symmetric capacitor was assembled by using PANI/Ni (OH)2as both of the positive and negative electrodes and 1 M Na2SO4as the electrolyte. It displays a energy density of 6.0 Wh kg-1at the power density of 3125 W kg-1, which is much higher than symmetric capacitor assembled by PANI-PANI (4.9 Wh kg-1) and Ni (OH)2-Ni (OH)2(3.5 Wh kg-1).
Dynamic Characteristics Analysis of the Magnetic Levitation Cylindrical Linear Motion Guide
Authors: Yu Ji , Wu Qiang , Ma Su Yang , Zhou Chen Quan , Shen Dan , Liao Ping
Published: January 2014

The principle of the magnetic levitation cylindrical linear motion guide and the theory of vibration analysis were introduced. By finite element analysis software ANSYS, modal analysis for guide was made to get the natural frequencies and vibration modes, the harmonic response analysis was also made to get the displacement response by the cutting force on the basis of modal analysis, and the influence of displacement on electromagnetic force was analysised.
Study on a Portable Abrasive Suspension Jet Cutting Machine for Coal Mines
Authors: Zhao Wei , Guo Chu Wen
Published: January 2014

Hot cutting is strictly forbidden in coal mines, especially for those with high density of gas. As the only one cold cutting technology, abrasive suspension jet could be used in coal mines to solve the problem of cutting operation under hazardous environments. Based on the technology of abrasive suspension jet, this paper developed a portable cutting machine which is suitable for the dangerous and complex environment in coal mines. Experimental results indicate that the cutting machine could well meet the requirements of cutting operations in coal mines, such as machinery maintenance. Methods for monitoring the quantity of abrasive within the high-pressure tank and the wear of nozzle were also investigated. Safe cutting could be ensured by application of this portable cutting machine. Promotion of the technology would have significant social and economic benefits.
A New Fault Location Algorithm for Series Compensated Lines Using Two Terminal Data
Authors: Su Xin Xia , Wang Zhi Jie
Published: January 2014

This paper through analysis the relationship between angle of voltage and current, proposes a new distance protection scheme based on double side electric parameters. This method can directly locate the fault accurately. It can regardless the influence of series compensation installation location and MOV non-linear, and it can overcomes the overreach problem for external faults. So greatly improves the reliability of series compensated line distance protection. The simulating results show the validity and adaptability of the protection principle proposed.
The Analysis of Voltage Stability in Power System
Authors: Wang Jun Feng , Zhou Hui
Published: January 2014

In the static voltage stability analysis, we usually use the vertex of the P-U curve as the critical point of the voltage stability. This method can not reveal the problem of the physical essence of the voltage stability and the instability mechanism. We must adopt the dynamic analysis method to analyze the voltage stability from the dynamic factors. This paper discuss the small disturbance analysis method and the continuation algorithm analysis method of the dynamic analysis method, then research the mechanism of voltage collapse and the results of the dynamic analysis. At the same time, a load model and elements of the system dynamic model suitable for the voltage stability analysis is the key and difficult point of the voltage stability research.
Long and Medium Term Load Forecasting Based on Grey Model Optimized by Cosine Function and Time Response Function
Authors: Huang Yi , Li Wei , Wang Fang Min
Published: January 2014

The article uses the cosine function and Euclidean distance function to optimize the traditional GM (1, 1) model. The cosine function processing the raw data columns, which could enhance the smoothness of the original series, and strengthen the general trend of the original series as well, effectively eliminate the shock interference of disturbed system. The principle of minimum Euclidean distance used to optimize the response function to determine the constants C, which could make better use of the original information. The improved model is applied to the tertiary industry in Beijing load forecasting, the results show that the improved model has higher prediction accuracy, and the improved model used to predict the next three years’ electricity consumption of tertiary industry in Beijing.
Virtual Maintenance Technology Application Research in Agricultural Vehicle Repair
Authors: Qiu Xiao Hua , Ma Chao Zu
Published: January 2014

This paper introduces the virtual maintenance technology, expounds the present situation of agricultural vehicle maintenance and the necessity of virtual maintenance application in vehicle maintenance, and discusses the application of virtual maintenance technology in agriculture vehicle maintenance. Finally the suggestions used on virtual agricultural vehicle maintenance in the future are put forward.
Operation Mechanism of Terminal Distribution of Productive Materials
Authors: Zhu Yi Qing , Zhu Zhan Feng , Zhu Geng
Published: January 2014

With a logical reasoning-realistic analysis binding methodology and the theories of internet of things and supply chain management, probes into the development trend of productive materials terminal distribution. From three perspectives, value process, technical platform and node selection, the research indicates the operation mechanism of terminal distribution, providing a theoretical support for dual promotion of efficiency and effectiveness in terminal logistics of productive materials.
Workflow Based Assembly Process Control and Management Method for Complex Product
Authors: Zhou Zi Yan , Ruan Si Jie
Published: January 2014

To solve the problems of unstable process, frequent change and difficult management in assembly process of complex products, by introducing the workflow technology, the reverse process flow was defined based on analysis of assembly process execution and feedback process. The information model of process feedback was presented and a workflow based assembly process control and management method was proposed, and the real-time feedback of technology problems in workshops, the automatic running of reverse process as well as the assembly BOM based integrated management of process information were realized. The feasibility of proposed method was proved by actual engineering applications.
Study the Smoke Characteristics of Fire in the Ship Engine Room Based on the Different Speeds of Inlet Air
Authors: Wang Liang , Wang Xian Miao , Su Shi Chuan
Published: January 2014

A bulk ship is used for the research object. The simplified model of ship engine room is built, and which is based on the idea of multilayer geometric structure. The fire in ship engine room is simulated by using the software of FDS (Fire Dynamics Simulator). Also, under the condition of the speed of inlet air is 1m/s, 2m/s, 3m/s, the change law of the spread speed, the concentration and the temperature of smoke are analyzed. The results show that the speed of inlet air has a greater influence on the change law of smoke. In addition, when the air speed is 3m/s, the smoke concentration is minimal in the ship engine room, but the decreasing amplitude of temperature is maximal. The results can supply a theoretical foundation for smoke control in ship engine room with multilayer geometric structure.
Pumping Unit Optimization Design Based on Virtual Prototype Technology
Authors: Zhang Li , Xing Jin Ling , Chang Bao Hua , Wei Lei
Published: January 2014

Using Solidworks establish the virtual prototype of the conventional beam pumping unit. After that, by using ADAMS moves on to the kinematics simulation of prototype, detailed the polished rod motion parameters curves are present. When compared the results with the calculation results of accurate analysis method, discovered that these two results of different methods coincide quite well, and the reliabilities of simulation results of using virtual prototype technology. are validated. The optimal design of pumping unit skeletal structure parameters is explored in this paper, taking the polished rod acceleration as objective functions. From the simulation solution, we get the optimal structure and size of pumping unit. Virtual prototype technology provides a kind of economical, fast and reliable way to design and optimize structure of the pumping unit.
Use of Drawings Archive for Design Process
Authors: Vigano' Roberto
Published: January 2014

The drawings archive of a company is an important font of information that could be used during the design process. In fact, it is a collection of known and proven solutions to design problems and, also, the drawings include a variety of information useful to design such as physical principles to achieve a function or solutions of particular machine design problems. The use of these data is however conditioned by easiness of access to the information. Normally, the drawings archive is not structured in a useful manner for the design and the retrieve of the information contained requires effort and time that are not often available to the designer. The use of database systems and informatics tools, as Product Data Management (PDM) or Product Life-cycle Management (PLM) systems, can allow company to add more attributes to the drawing during its storage, allowing a different access to the information. This work proposes an example about the organization of the information based on the functional structure of a product. The organization proposed was also used to catalogue the data stored in relation to the standards required to the product. This to demonstrate how much information is hided into the historical archives of a company and how much it could be useful during the design process.
The Finite Element Analysis of Car's Rear Axle and Prediction of Fatigue Life
Authors: Li Li
Published: January 2014

This paper makes a static strength calculation and fatigue life prediction of a car's rear axle. To find out the dangerous stress and strain points of the bridge shell by making calculation analysis of the structure strength and stiffness of the rear axle bridge shell by using finite element analysis software, MSC.Patran and MSC.Nastran. Using MSC.Fatigue software on the rear axle to make an analysis of its fatigue life base on the finite element analysis, and make a modal analysis with MSC.Nastran software.
The Numerical Simulation of Hemispherical Parts Based on FBDF Technology
Authors: Li Lian Cheng , Li Ming Zhe , Li Yuan Ting
Published: January 2014

in this paper, we mainly introduce the principle of the flexible blank drawer forming (FBDF), and establish the limited element model of the FBDF process. Then we make a numerical analysis on the hemispherical parts, and study the effect made on the result of shaping by damping force, friction coefficient as well as material parameter in per unit area. Through the analysis of the numerical simulation result, we can conclude that the greater the yield limit and elasticity modulus, the larger blank drawer force is required to form the shape; the more smooth the material surface, the less resistance to deformation will have. All this contributes to good quality of forming parts.