bluuebunny/crossref_metadata_2025 huggingface dataset:
A New Method of Container Port Hinterland Division
Authors: Yang Yan Bing , Liu Bin
Published: December 2011

This study put forward container port competitiveness index evaluation system and a new method of division of hinterland basing on the evaluation system and a p-choice model. The result can provide reference for macro-plan and construction of port scale of Chinese container ports and avoid unnecessary waste that is caused by blind competition.
Combining Algorithms for Recommendation System on Twitter
Authors: Pankong Nichakorn , Prakancharoen Somchai
Published: December 2011

Twitter has rapidly increased in popularity over the past few years. So, we have focused on Twitter as it has a large scale of data which is increasingly difficult to search through. In this paper, we propose recommendations for content on Twitter. We explored four dimensions in designing such as: topic relevance of content sources, the content candidate set for users, social voting and Meta data mapping. We implemented 24 algorithms for analysis of 12,000 records for three domains as follows: entertainment, stock exchange and smart phone in the design space. The best performing algorithm improved the percentage of correct matching interesting content to 23.86%.
Design of Aircraft Circuit Modelling Based on Treble Transitions Petri Nets
Authors: Chen Jing Jie , Wang Zhen Ming
Published: December 2011

This paper presents an approach to modeling aircraft airline maintenance circuit through a particular Petri Nets structures, called Treble transitions Petri Nets. In order to meet the requirements of the simulation of aircraft airline maintenance circuit, several enhancements were proposed. The first of them consider the characteristic of circuit, the places, transitions and arcs of classical Petri Nets are extended. In the Second enhancement, the rules of transitions were modified. Finally, the relating matrix and the state transfer equation are redefined. One case is included illustrating the applicability and efficiency of the proposed modeling method.
The Safety Monitoring Warning System of Mining Dump Truck
Authors: Feng Qing Dong , Shuai Jian , Yin Yong Jing , Jiao Zhong Liang
Published: December 2011

This paper presents the accident type of mining trucks, then gives the reasons of the problem by analyzing the structure characteristics and work environment of the trucks, and points out that the large blind area around the mining trucks is the main reason of frequent accidents. In order to monitor the blind area roundly and efficiently, the paper proposed a design scheme of safety monitoring alarm system using CAN bus technology, PLC technology and radar monitoring warning technology, which can assist driver to monitoring the blind area efficiently. The paper also gives a detailed description of the system designing and installation on mining trucks. It's concluded that the safety monitoring alarm system have a good performance to avoiding the blink area and a good application prospect, the system can be widely used on mining trucks.
Brain Controlled Car for Disabled Using Artificial Intelligence
Authors: Amuthan A. , Jibin George
Published: December 2011

This paper considers the development of a brain driven car, which would be of great help to the physically disabled people. Since these cars will rely only on what the individual is thinking they will hence not require any physical movement on the part of the individual. The car integrates signals from a variety of sensors like video, weather monitor, anti-collision etc. it also has an automatic navigation system in case of emergency. The car works on the asynchronous mechanism of artificial intelligence. It’s a great advance of technology which will make the disabled, able.
FAutoREDWithRED: An Algorithm to Increase the Fairness in Internet Routers
Authors: Chitra K. , Padmavathi G.
Published: December 2011

Routers in Internet face the problem of congestion due to the increased use of Internet. AQM algorithm is a solution to the problem of congestion control in the Internet routers. As data traffic is bursty in routers, burstiness must be handled without comprising the high link utilization and low queuing delay. Congested link causes many problems such as large delay, unfairness among flows, underutilization of the link and packet drops in burst. There are various existing algorithms that have been evolved over the past few years to solve these problems of congestion in routers. RED based algorithms only use queue length as congestion indicator to indicate congestion. In this paper, we propose an AQM scheme that considers only the advantages of these queue length based and uses the flow information and satisfies the QOS requirements of the network. This proposed scheme aims to provide good service under unresponsive load and shields the responsive flows from unresponsive flows to offer a good QOS to all users.
A Survey of Meta-Heuristic Solution Methods for Mapping Problem in Network-on-Chips
Authors: Janidarmian Majid , Fekr Atena Roshan
Published: December 2011

Network on Chip (NoC) has been proposed as a new paradigm for designing System on Chip which supports high degree of scalability and reusability. Mapping the IP cores onto a given platform is an important phase of NoC design which can greatly affect the performance and energy consumption of the chip. Mapping which is an instance of the constrained quadratic assignment problem (QAP) belongs to the class of NP-hard problems. Due to the complexity of many of these problems, particularly those of large sizes encountered in most practical settings, meta heuristic algorithms are conspicuously preferable. These algorithms help us achieve optimal or near optimal solutions in large size applications with reasonable time. In this paper eight types of Genetic Algorithms (GA), Particle Swarm Optimization(PSO), Simulated Annealing(SA), Differential Evolution(DE) and Imperialist Competitive Algorithm (ICA) are applied in their basic frameworks for solving the mapping problem on two real core graphs Video Objective Plan Decoder and MPEG-4. The experimental results show the comparisons of these different meta heuristic algorithms with each other.
A General Method of Numerical Simulation for Incremental Forming
Authors: Chen Li Jun , Pei Geng , Fang Qing Bo , Pan Jun Jie
Published: December 2011

This paper presents a general simulation method for sheet metal incremental forming(ISF). Firstly, a three-dimensional finite element model based on Dynaform was developed to simulate the process. The tool path during the process simulation was directly defined by numerical control (NC) code and so identical with that in operation. Then, the results of numerical simulations with different process parameters, such as tool diameter, depth increment and wall angle, were discussed in details. The simulations reveal that with the decreasing depth step, increasing tool diameter and wall inclination angle, the axial stress reduces and leads to thinning reduction and more uniform thickness distribution. In addition, as the definition of the tool path was in accord with the genuine motion trajectory of the tool, the results deduced from this model may be more precise compared with those from other previously simplified models.
Conjoint-Analysis on Development of Integrity Image Management in Public Sector
Authors: Yang Yong
Published: December 2011

The development of public integrity management has been the focus of public sectors, which can also be regarded as the marketing organization; the introduction of customer satisfaction and experiential marketing is a new issue. With the development of experiential marketing and “customer orientation”, the customer satisfaction has been the major content of strategic development of service industry which typically implements experiential marketing. The public sectors provide the service to the public, who is regarded as the customer in marketing; the relative measurement of satisfaction directs the quality improvement, distinctive capability and performance reinforcement for organization. This article attempts to establish index model on public satisfaction, through designing the questionnaire by orthogonal design, the conjoint analysis is executed to the current situation and suggests recommendation.
Switchable Bandpass Filter with Capacitive MEMS Switches and EBG Structures
Authors: Taheri Z , Maphinejad K
Published: December 2011

This paper presents a new switchable band pass filter based on electromagnetic band-gap (EBG) and coplanar-waveguide (CPW) structures and tuned by the MEMS shunt and series capacitive switches. By tuning the bridge height of the MEMS switches with low voltages (lower than 14.5v), the center frequency would be shifted with almost constant bandwidth. Proposed structure has smaller chip size and lower insertion (better than 0.375 dB) in mid band frequencies. Results show using MEMS technology and EBG structures not only improve the performance of the filter, but also they optimize the chip size. Therefore, it is suitable for radars, wireless, safe and multi-frequency communication systems.
Design and Simulation a Low Voltage Actuated RF MEMS Switch with Improve RF Characteristics
Authors: Ershadi Tohid Zargar , Salimi Ehsan , Zolfkhani Habibollah
Published: December 2011

This paper present, the design and simulation of the Ka to v band RF-MEMS capacitive switch. The mechanic design and analysis of the RF-MEMS switches are based on both the finite element method and the full-wave electromagnetic simulation. A double-beam switch with a high impedance short transmission line is proposed to improve RF characteristics. The electronic characteristics, of the switches including insertion and return losses in up-state position, were more than -0.11 dB and less than -23 dB , respectively and isolation on down-state position was more than -30 dB on 50 GHZ frequency. In order to make lower actuated voltage, a serpentine spring folded suspension beam and low actuated area were used so that some important issues such as life and reliability of switch were considered in design.
Research on Innovation Mechanism of Industry Cluster Embedded in Social Networks Relation
Authors: Fang Xiao Ling
Published: December 2011

In this paper, the new economic sociology perspective is applied for in-depth study on industry cluster innovation mechanism. Industry cluster is an economic system, but also a social system. The economic behavior of industrial cluster is embedded in social networks. And the embeddedness of industrial cluster is a fundamental characteristic of social networks. According to the principle of Granovetter's "weak ties", the tie strength of the individual and the extent of the heterogeneity of the located network indirectly affect the validity of the information that the individual in the network obtains. Therefore, the strong ties and weak ties play a unique role in cluster network trade and innovation. A cluster network with integrated structure and thorough function needs to have both of such relation networks and have the ability to maintain the relative balance of them in the dynamic evolution. This relatively balanced cluster network ties strength is the ideal structure of innovation cluster network.
Research on Application Strategy for ERP System in Enterprise Accounting Informationization
Authors: Li Chang Shan
Published: December 2011

With the rapid economic operation, intensified market competition, the enterprise’s requirement on the quality of accounting information is getting higher and higher. It is also a subject faced by enterprise that how to construct the accounting informationization scientifically, reasonably and efficiently to ensure that accounting information system is operated safely, effectively and in real-time. ERP represents a higher level among current accounting informationization. The implementation of ERP in medium and small enterprises has more advantages than that in large enterprises, if strategy properly, it will greatly improve the success rate for ERP implementation. Enterprises carried out ERP successfully should promote the establishment of decision support system and business intelligence system at proper time. Although the medium and small enterprises have a advantage ERP implementation, to implement ERP successfully, they need to have correct cognition on it, well solve the relationship between “top leader” and team building, make correct choice, construct ERP system in step with certain focal points according to their plan as well as persist in the training of entire staff and intensifying the job of enterprise data management. Enterprises successfully implemented ERP should take decision support system and business intelligence system as their next target in accounting informationization.
Organic Bulk Heterojunction Solar Cell Based on Rosebengal: ncTiO2 and Parameter Extraction by Simulation
Authors: Sreekala C.O. , Saneesh P.F. , Sreelatha K.S. , Kishnashree A. , Roy M.S.
Published: December 2011

In bulk heterojunction solar cells, the donor and acceptor materials are intimately blended throughout the bulk, so that the excitons generated will reach the interface within their lifetime. In this work, Rosebengal (RB) is used as the donor material and nanocrystalline Titanium dioxide (nc TiO2) as the acceptor material. Devices with device structure ITO/RB:TiO2/Ag are prepared and their optical and electrical properties are compared at different temperatures. Optical absorption spectroscopic analysis shows that the absorption of Rose bengal ranges from 650-800 nm corresponding to a band gap of 1.98 eV. Cyclic voltametric analysis, and photo voltaic properties are analysed. Using simulation, the dark current parameters such as ideality factor (n), mobility (µ) potential barrier (φb) and carrier concentration are extracted and tabulated.
Laser Reflow Technology on High-Q Toroidal Microcavity
Authors: Jia Peng Fei , Yan Ying Zhan , Yan Shu Bin , Zhao Min
Published: December 2011

Optical microcavities confine light to small model volumes and have ultrahigh quality factor (Q), especially microtoroid cavities, having very broad application prospects. In this paper, we use MEMS (Microelectromechanical System) skills, such as lithography, dry etching to fabricated silica optical microdisks. And after that, a novel processing method based on CO2laser reflow technology is introduced to create microtoroid cavities. The processing details are discussed including light path, laser power and other important parameters. The quality factor of the planar microtoroid cavity was measured by taper-fiber coupling and the average value reach 4.8×105.
Design of a Novel Encapsulation Based on Hair Cell Vector Hydrophone
Authors: Xu Jiao , Zhang Guo Jun , Shi Gui Xiong , Liu Xi Bao , Zhang Wen Dong
Published: December 2011

According to sensitive structure of vector hydrophone which imitates fish lateral line cells, a novel encapsulation of polyurethane is proposed, that is, using polyurethane, the same material as sound-transparent cap, instead of castor oil to package. It is desirable that the novel encapsulation may effectively solve the problem of vector hydrophone’s low sensitivity. On the basis of analysis theoretical model of sound-transparent cap’s three layer mediums, this paper simulated the whole encapsulation structure by ANSYS. It can be concluded that the sensitivity is 0.267mV/Pa, resonance frequency is 1151.37 Hz. Finally, the prototype of the vector hydrophone was fabricated and preliminary characterization tests of the hydrophone were performed. Results show that the novel encapsulation hydrophone possesses satisfactory directional pattern and the free-field voltage sensitivity is -188.9 dB, which is 8.8dB higher than castor oil encapsulation.
Study on the Electromagnetic-Protective Specialty of Carbon Nanotubes
Authors: Chen Ren Song , Wang Guo Qing , Gao Xin Jun , Wang Bing , Chen Zhi Lin , Gao Zheng Ming
Published: December 2011

Based on electromagnetic-wave penetration method, the electromagnetic wave attenuation abilities of six kinds of CNTs were studied in experiment at 12~18 GHz, whose diameter at 30 nm, 60 nm, 100 nm and length at 2 μm and 15 μm. Such results are concluded from the experiment. With the same diameter 30 nm, the absorption ability of CNTs with the length 15 μm is better than which with the length 2 μm; With the same diameter 60 nm, the absorption ability of CNTs with the length 2 μm is better than which with the length 15 μm; With the same diameter 100 nm, electromagnetic attenuation ability of CNTs with the length 15 μm is better than which with the length 2 μm. Electromagnetic attenuation ability order of CNTs with the same length is that Ф60 nm > Ф100 nm > Ф30 nm. On the absorption ability, the best is CNTs with Ф60 nm × 2 μm, and the worst is CNTs with Ф30 nm × 2 μm. At 12~18 GHz, the absorption orders of the six kinds of CNTs is that Ф60 nm × 2 μm > Ф 60 nm × 15 μm > Ф100 nm × 15 μm >Ф100 nm × 2 μm > Ф 30 nm × 15 μm > Ф 30 nm × 2 μm.
The Mesoscopic Structure of β-HMX-Based PBXs by Dissipative Particle Dynamics Simulation
Authors: Cui Hong Ling , Chen Xiang Rong , Ji Guang Fu , Wei Dong Qing
Published: December 2011

The χ parameters and the repulsive parameters of different polymers and β-HMX(octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine), the mesoscopic structures of β-HMX-based PBXs at different temperatures have been studied. The results shown that the compatibility among β-HMX and the polymer structure units (vinylidenedifluoride (VDF) and chlorotrifluoroethylene (CTFE), respectively) are increasing with temperature increasing. The temperature and Molar ratio of the polymers played the important role in wrapped process.
Algorithm for Threat Area Avoidance in Military Unmanned Ground Vehicles
Authors: Rammoorthy D. , Radhakrishnan K.K. , Swarna Ramesh
Published: December 2011

In addition to the conventional obstacle avoidance capabilities, the Unmanned Ground Vehicles (UGVs) used in military environments should be capable of avoiding certain areas which could inflict damage to the UGVs or result in the failure of the mission. The threat area could be minefields or an area vulnerable to enemy fire or detection. In this paper we have proposed and implemented an algorithm for ‘Threat Area Avoidance (TAA)’. Our algorithm was incorporated in two of the obstacle avoidance methods, Vector Polar Histogram (VPH) and the Enhanced VPH. The performance of our algorithm was evaluated in terms of distance overhead, navigation time, computational time and UGV Orientation Angle Variation Index. Through simulations, we observed that the proposed algorithm avoids a potential threat area (even though it is free of any obstacles) and takes a safe path while navigating between the start and goal points, with minimum overhead in computation.
Sa-Oiliness: A System to Measure Oiliness of Distant Subject Using Image Processing
Authors: Gupta Anand , Garg Rachit , Suri Shruti
Published: December 2011

In medical examination of skin texture, an expert is generally needed to examine the skin texture thoroughly. It is felt that the same can be achieved through image processing, wherein a skin expert or physical presence of the patient are not needed on the spot. In the distant skin examination, expertise is required in analyzing the skin texture as appeared on the image. The texture is evaluated on the basis of oiliness of the skin, which is measured by a specific instrument [5]. As per our knowledge, the instrument is not readily available. To overcome this problem, a framework (SA-OILINESS) is proposed in this paper. It is designed so as to provide a scale to measure oiliness of facial skin through an image of a standard resolution. The proposed approach is based on the principle that the intensity of light from an oily skin is comparatively higher than that from a dry skin. Images of test subjects are taken at the same time and using the approach of weighted mean of the intensity of light reflected from the marked forehead region a scale of oiliness is developed. The scale is used to measure the relative value of oiliness.
A Comparative Study of Thin-Film and Reynolds Equation Simulation Models for Squeeze Film Damping in MEMS Plate Structures
Authors: Liu Wei Guo , Wang Wei , Peng Shou Jun
Published: December 2011

Squeeze film damping effect of MEMS parallel plate structure was analyzed based on thin film and Reynolds Equation in ANSYS under the different Knudsen numbers. Perforation effect of parallel plate with certain size and operating frequency was achieved under the different Knudsen numbers, the simulation results of two methods are very close. For unperforated plate, when Knudsen number is below 0.01, the discrepancy of two simulations is nonsignificant, and it grows up with Knudsen number. But gas rarefaction effects related with Knudsen number was considered in heat transfer analogy theory and used viscosity modification according to Veijola model, two simulations get the same result. For perforated plate, the simulation discrepancy of two methods will be great because of channel flow's effect and also grow up with Knudsen number, it can't be avoided even if the channel flow's effect and viscosity modification were concerned in heat transfer analogy theory.
Air Damping Effects of MEMS Parallel-Plate Structure Using ANSYS Thin Film Analysis
Authors: Zhang Xiong Xing , Peng Shou Jun , Zou Jin Long
Published: December 2011

ANSYS thin film analysis was adopted to simulate the effects of squeeze film damping. The relation of damping effects versus operating frequency, velocity, material accommodation factor was analyzed, and the gas squeeze film damping and pressure distribution was simulated by steady-state analysis or harmonic analysis. Moreover, pressure distribution of damping effect in plate gap both with perforated holes and without holes, were determined and compared. Simulation results show that operating frequency and the structure of microstructures are the main influencing factors to air damping and perforated holes in plate gap can control stiffness coefficients of squeezed film damping.
Experimental Modal Characterization of MEMS Switches
Authors: Book Joel M. , Asokanthan Samuel F. , Wang Tian Fu
Published: December 2011

MEMS devices, Micro Electro-Mechanical Systems, are electrical and mechanical systems with characteristic dimensions on the order of microns. Since these systems have moving mechanical parts, characterization of their dynamics, including their modal parameters, is highly desirable. This paper describes the validation of an existing implementation of the Stochastic Subspace Identification (SSI) algorithm, called MACEC, for experimental modal analysis of a micro-cantilever switch. A white noise signal applied to the built-in electrostatic actuator in the switches excited a response measured using microscanning Laser Doppler Vibrometry (LDV). The modal parameters found using MACEC matched well those predicted by theory, thus validating this combination for experimental modal analysis of MEMS structures.
Physical Level Simulation of PolyMUMPs Based Monolithic Tri-Axis MEMS Capacitive Accelerometer Using FEM Technique
Authors: Khan M.S. , Iqbal A. , Bazaz S.A. , Abid M.
Published: December 2011

In this paper, we present the design verification of PolyMUMPs based monolithic tri-axis MEMS capacitive accelerometer. The physical level simulation has been done using the analyzer module of Coventorware to verify the performance of the three-axis accelerometer using Finite Element Method (FEM) and compared with the optimized results obtained in ANSYS and in MATLAB. The 2D model is created in the designer module of Coventorware. The 3D layout is generated in the preprocessor module and mesh is created on solid model. Proposed three axis accelerometer has three individual single axis accelerometers, integrated on a single substrate uniformly centered on single axis. Low mechanical noise, high sensitivity and sense capacitance have been measured for all axes individually and presented. The results obtained from both the analytical and finite element models are found to be in excellent agreement.
Tracking a Chaotic System Using an Observer-Based Nonlinear State-Feedback Controller
Authors: Roy Tanushree , Sengupta Aparajita
Published: December 2011

This paper attempts to design a Luenberger-like nonlinear observer and a nonlinear state-feedback controller for trajectory tracking of a single-input/single-output nonlinear system exhibiting chaotic dynamics. Using a nonlinear transformation, the nonlinear system is first transformed into a linear system and thereafter a control law is designed for trajectory tracking. The controller, designed on the basis of an input-output linearized model, is applied on both the linearized as well as the nonlinear system. The results are validated through simulation on a Duffing oscillator.
Developing Applications On-Board of Robots with Becerik
Authors: Kumova Bora İ. , Takan Savaş
Published: December 2011

Robot applications are mostly first developed on a computer and thereafter loaded onto the robot. However, in many situations, developing applications directly on the robot may be more effective. For instance, children who have not learned using a computer yet and who develop their robot applications while playing. Or for instance in the robots' operating environment, where there is no computer available. In this contribution we present the properties of the software tool becerik, for developing applications on-board a robot and for running them in multi-tasking mode concurrently. Furthermore, we introduce the programming language of the applications that has the same name becerik, which consists of only 6 commands.
Automated Motorized Line of Sight Control of Antennas to Obtain Maximum Signal Strength
Authors: Warsame Hassan Muse
Published: December 2011

automated motorized line of sight control of antennas is discussed in this paper which is an advanced technique. By using automated system between the antennas to obtain maximum signal strength and reduce the over all fading diffractions between the two antennas.
Fuzzy Controller for Positioning Tasks in Tactile Surgical Navigation
Authors: Mungwe Stanley A. , Hein Andreas
Published: December 2011

This paper presents a fuzzy controller for positioning control with a newly developed surgical navigation system which uses tactile signals as feedback to the operator. The advantage of using tactile vibrations to transmit feedback information about the position of the surgical tool relative to particular tissues is the reduction of the contant gaze of the operator from the field of operation to a remote screen. The Fuzzy controller was derived without any analytical system model and its efficiency was compared to that of an already developed classical controller.
A Novel Fuzzy Adaptive Speed Estimator for Space Vector Modulated DTFC of AC Drives
Authors: Pujar Jagadish H. , Kodad S. F.
Published: December 2011

In this paper a novel sensorless speed control scheme of Induction Motor (IM) by means of Direct Torque Fuzzy Control (DTFC), PI-type fuzzy speed regulator and fuzzy based Model Reference Adaptive Systems (MRAS) speed estimator strategies has been proposed, which seems to be a boom in sensorless speed control schemes of AC drives. Normally, the conventional sensorless speed control performance of IM drive deteriorates at low speed. Hence the attention has been focused to improve the performance of the IM drive at low speed range as well, by implementing fuzzy control strategies. So, this research work describes a novel adaptive fuzzy based speed estimation mechanism which replaces the conventional PI controller used in MRAS adaptation mechanism. The proposed scheme is validated through extensive numerical simulations on MATLAB. The simulated results signify that the proposed control scheme provides satisfactory high dynamic performance and robustness during low speed operations of IM drive compare to conventional sensorless speed estimator of DTFC scheme.
Generalized Frequency Domain Robust Tuning of a Family of Fractional Order PI/PID Controllers to Handle Higher Order Process Dynamics
Authors: Das Saptarshi , Gupta Amitava , Das Shantanu
Published: December 2011

Generalization of the frequency domain robust tuning has been proposed in this paper for a family of fractional order (FO) PI/PID controllers. The controller tuning is enhanced with two new FO reduced parameter templates which are capable of capturing higher order process dynamics with much better accuracy. The paper validates the proposed methodology with a standard test-bench of higher order processes to show the relative merits of the family of FO controller structures.
To Automate AMF Pinspotter Machine
Authors: Hanif Athar , Rana Ali Salman , Arif Farhan , Farooq Umar , Asad Muhammad Usman
Published: December 2011

This paper gives instructions for making complete and efficient control system of AMF bowling machine, it helps decreasing machine cycle time, make the machine energy efficient, reduce error in scoring, perform automatic resetting of machine in the event of power failure, calculating and displaying accurate speed and giving more options for user interface.
Study of Shunt FACTS-Based Controllers Effectiveness on Multi Machine Power System Steady State Operation
Authors: Sahu Laxmidhar , Therattil Jose. P. , Panda P. C.
Published: December 2011

The continuous change in power demand and supply altered the power flow patterns in transmission networks in such a way that some of the corridors are lightly loaded and some of the corridors get over loaded. This raises serious challenge in operating the power system in secure and reliable manner. To cope with this problem Flexible AC Transmission Systems (FACTS) is used. It plays a very important role in improving the power system operating performance. In this paper load flow models for STATCOM and SVC have been developed. Power flow study of a five bus system is carried out with and without FACTS controllers. Results of the power flow studies are obtained with MATLAB programming.
Computation Model for Collapse Strength of the Casing Wear
Authors: Liang Er Guo , Li Zi Feng
Published: December 2011

With the combination of theoretical analysis, numerical simulation and actual test, the factors and rules impacting the collapse strength are studied. The collapse strength of the casing wear presents changes of exponent, power function, and linear trend with the residual casing wall thickness, wear radius and axial load respectively. Based on this, the computation model of collapsing strength for the whole casing wear has been established and the model is tested for verification by computing collapse strength of non-casing wear. The study results provide a guide for design of the casing sting strength and down-hole safety.
A UWB CMOS Transceiver
Authors: Mehta Shilpa
Published: December 2011

A direct-conversion ultra-wideband (UWB) trans-ceiver for Mode 1 OFDM applications employs three resonant networks and three phase-locked loops. Using a common-gate input stage, the receiver allows direct sharing of the antenna with the transmitter. Designed in 0.13- m CMOS technology, the transceiver provides a total gain of 69–73 dB and a noise figure of 6.5–8.4 dB across three bands, and a TX 1-dB compression point of 10 dBm. The circuit consumes 105 mW from a 1.5-V supply.
Human Batteries Controlled by Nanobots Incorporating the Mems Technique
Authors: Kumar V. Ashok , Kumar S. Jasper Nirmal , Dheepak S. , Venkatesan T.
Published: December 2011

The pivotal role of lithium batteries in energy storage is a well known fact. But in today’s fast paced revolutionary world, problems like charge retaining difficulty, excess heat generation, leakage etc make them impossible devices for energy storage. Instead of going in for the conventional lithium batteries, a new battery can be brought into existence which uses the body fluid (blood) as its electrolyte. Inside the mystic human system, during the oxidation process of the carbohydrates we consume, electrons are liberated which may be used to power up a tiny battery inside, the rate of which is controlled by the nanobots. As multifunctionality is the need of the hour, numerous tiny sensors placed inside our body which operate on MEMS technique not only monitors the body tissues but also detects any block in arteries and veins, cancer causing cells and gives suitable command to the nanobots. The rate at which the nanobots clear the imperfection can be made faster by swarm intelligence. The multifunctionality aspect of nanobots is further enhanced as they act as an effective substitute for dialyser and pacemaker.
Induction Motor Drive THD Improvement with Multi-Level Inverter
Authors: Durgasukumar G. , Pathak M.K.
Published: December 2011

Multi-level voltage source inverters offer several advantages such as a better output voltage with reduced total harmonic distortion (THD), reduction of voltage ratings of the power semiconductor switching devices and also the reduced electro-magnetic interference problems etc. This paper presents the application of Fast space vector pulse width modulation (SVPWM) method for multi-level diode clamped inverter feeding a three-phase Induction motor. The algorithm is independent of the number of inverter levels. In this the three vectors nearest to the reference vector are identified and their corresponding duty cycles are found. These values remain same regardless of number of inverter levels and the location of reference vector.
Microstructure and Electrical Characteristics of ITO/CuPc/TCNQ/Al and ITO/TCNQ/CuPc/Al Heterojunctions
Authors: Juagwon Theerasak , Osotchan Tanakorn
Published: December 2011

Microstructure of heterojunction usually has strong influence on its electrical characteristic. In order to study the effect of microstructure, the layers of copper phthalocyanine (CuPc) and tetracyanoquinodimethane (TCNQ) are deposited on indium tin oxide (ITO) coated glass substrate by thermal evaporation method. The modification of microstructure in the organic semiconductor layer with varied underneath layer is studied in the heterojunction between CuPc and TCNQ. Then the effect on its electrical characteristic is examined between ITO and aluminum (Al) electrodes in these alternative structures. By determining the microstructure by atomic force microscope (AFM), the CuPc and TCNQ thin films provide very tiny and large grain, respectively. These large grains in TCNQ thin film connect into line pattern probably due to the slow grain growth. Therefore the CuPc film is deposited on this TCNQ layer, the larger gain size of CuPc film can be achieved. However, the TCNQ layer grown on top of tiny grain of CuPc exhibits relatively small grain size. The variation of X-ray diffraction (XRD) peaks of these alternative structures support the microstructure extracted from AFM image very well. The optical absorption of these various structures exhibits the combination of absorption peaks from each layer. The electrical characteristics of these structures strongly depend on junction between ITO electrode and organic layer. The heterojunction structures of ITO/CuPc/Al and ITO/CuPc/TCNQ/Al show rectifier characteristics while the structures of ITO/TCNQ/Al and ITO/TCNQ/CuPc/Al exhibit similar IV characteristic for both polarities. However the effect of larger grain size in TCNQ layer leads to very much higher current than those other structures. By measuring current down to temperature of 50 K, it is found that the structures with rectifier junction indicate the current decreasing more than five orders of magnitude while the junctions with no rectifier characteristic exhibit only slightly current change even the measured temperature is reduced to very low temperature.
Optimal Control of an Oscillating Body Using the Adjoint Equation and ALE Finite Element Methods
Authors: Sawanobori Hisaki , Kawahara Mutsuto
Published: December 2011

The purpose of this study is to determine the optimal angle of wings which is attached to an oscillating body located in an incompressible flow. At present, there are some bridges with wings to prevent oscillation by the wind. The angle of the wing is very important so as to minimize the oscillation of bridge. In this study, the angle to minimize the oscillation is presented by optimal control theory. In order to minimize the oscillation, the performance function which is expressed by the displacement of body is introduced. The performance function should be minimized satisfying state equation. This problem can be transformed into the minimization problem by the Lagrange multiplier method. As a minimization technique, the weighted gradient method is applied. For the discretization, the arbitrary Lagrangan-Eulerian(ALE) finite element method is applied to solve the FSI problem. The optimal control of an oscillating bridge is shown as numerical study.
Dynamics Simulation of Automatic Capsule Filling Machine with ADAMS
Authors: Wang Gui He , Yu Tian Biao , Wang Wan Shan
Published: December 2011

Automatic capsule filling machine is the key filling equipment for pharmaceutical capsule preparations. Taking NJP3400 type of capsule filling machine as an example, we built its geometric model with Pro/E, with the interface module called mechpro of PRO-ADAMS, the model can be imported into ADAMS software and then research into the kinematics simulation of the machine based on its motion parameters and structure. The machine’s strength, displacement, acceleration and the association of these parameters is also analyzed. The results show that the ADAMS software can optimize the machine’s motion parameters effectively.
Mathematical Model for Yarn Unwinding Part Ι: Cylindrical Packages
Authors: Praček Stanislav , Sluga Franci , Možina Klemen
Published: December 2011

Stability of the yarn unwinding directly affects the efficiency of the textile production process and the quality of the final product. A package with an optimal shape will result in an optimal shape of the balloon. In addition, the yarn tension will be small and steady even at high unwinding velocity. Computer modeling is a valuable tool in the search for the optimal package shape. We demonstrate a mathematical model for simulating the unwinding from cylindrical and conic packages. We show how the winding angle and the apex angle influence the angular velocity of the yarn during the unwinding. Since the centrifugal forces on the yarn in the balloon depend on the angular velocity, this velocity has a large influence on the tension that we wish to reduce.
Three-Dimensional Bubble Representation and Rule Mining for Evaluating Results of Corporate R & D Personnel’s Innovation Performance
Authors: Si Jiang Wei , Xu Xiao Feng , Xu Hong Jing
Published: December 2011

Placing the corporate R & D personnel innovation performance in a three-dimensional space evaluation, which is comprised of innovation capacity, innovation behavior, and innovation performance, we can get final organic combination between all dimensions and the evaluating result of innovation performance, and give its intuitive three-dimensional bubble graphic. Combining with the evaluation index system and the model system, relying on the research data, we make an empirical analysis on R & D personnel's innovation performance, and mine 5 valuable classification rules with rough set method.
Research on the Relationship among Cost Control, Technical Investment and Franchising Period in BOT Projects
Authors: Hu Zhen , Sun Jing Lei
Published: December 2011

Under the double win constraint condition between the public and private party, this paper takes VFM (Value for Money) as the evaluating indicator of the government’s earnings, uses the rate of return on investment as the evaluating indicator of the project company’s earnings in order to analyze the relationship among cost control, technical investment and franchising period. We found that the effective cost control can shorten the franchising period and hardly depend on the technical investment. If the contribution of the technical investment to the reduction of the maintenance cost is comparatively high, increasing technical investment can effectively shorten the franchising period, otherwise it has to postpone the franchising period so as to meet the earnings target of both the public and private parties when increasing the technical investment
Study on Manufacturing Firms’ Management Professionalization and Its Determinants: Research Design from a Quantitative Perspective
Authors: Zhan Jun
Published: December 2011

The paper intends to lay a theoretical framework for quantitative studies on management professionalization and environmental influences. By defining management professionalization, explaining its constructs, and clarifying the environmental determinants, the paper hope to present a methodological design for solving the two questions: how the management professionalization can be measured and how the relevant influences can be investigated.
The Grey Clustering Evaluation Model of Enterprises IPR Performance Management
Authors: Li Ying
Published: December 2011

The enterprise intellectual property rights supervisory work is acomplex system engineering, the achievements of management performance is from management process and final product. Through the semantic resolution, from the service quality and the technical quality two aspects, has constructed the enterprise intellectual property rights management achievements pessimistic cluster quality synthetic evaluation model, and unifies the example confirmation model the accuracy and the validity.
Research on Current Situation and Countermeasures of Urban Unemployed People’s Re-Employment
Authors: Ge Guo Hua
Published: December 2011

Re-employment is not only great economic problem, but also great political issue. It is important measure to promote re-employment for maintaining reformation, development and stability. Employment is vital to people's livelihood. Good carrying out of re-employment is basic for laid-off worker and unemployed people’s livelihood, also great and urgent affair. This article has based on analysis and review of urban unemployed people’s re-employment problem; has defined unemployed people and analyzed current situation and countermeasures of urban unemployed people. Analyzing problems in urban unemployment & constraint in re-employment and depending on correlation theory, it has proposed countermeasure to solving problems by developing jobs, perfecting labor market, improving social security system and strengthening re-employment training.
Design Organization Management Based on Fractal Theory
Authors: Li Pu Hong , Fan Zhi Jun
Published: December 2011

After analyzing the characteristic and present situation of design organization, this paper presented a new design organization—fractal design organization(FDO) based on fractal theory. FDO can be self similarity and self-organization, satisfy the design work. Therefore it can motivate creating potential of design organization, complete design task and beat the enterprise’s target.
Error Level Data Fusion Algorithm in WSN
Authors: Kong Yan Yan , Qian Fei Fei , Shen Wen Yi , Qin Ning Ning
Published: December 2011

After analysis of the performance of data fusion based on virtual node algorithm (VNB-DF), design of a classification error (EG) the virtual node data fusion algorithm. The algorithm's accuracy depending on the target, set the error level, expressed through the polynomial fitting coefficients of a range of monitoring the distribution of data in memory to generate a virtual node. Experimental results show that compares with the data obtained with the cluster mean and VNB-DF algorithm, the algorithm greatly improves the accuracy of data collection, applications in types of environmental can show a good performance.
Rheological Behavior of Carbon Nanotubes / Copper Feedstocks for Metal Injection Molding
Authors: Ahmad Faiz , Muhsan Ali Samer , Raza M. Rafi
Published: December 2011

Metal injection molding (MIM) technology is known for its ability of producing near net shape components. This study presents the results of flow behavior of multi-walled carbon nanotubes (MWCNTs) reinforced copper composites mixes. The solid loadings in the copper mixes were investigated in the ranges of 55-61 V% using a binder. Copper mixes and copper/MWCNTs were compounded using a Z-blade mixer for homogenous dispersion of solids in the binder. Results identified a mix containing 59 V% copper suitable for substitution of MWCNTs. The flow properties were measured using a capillary rheometer in the shear rate range expected to occur during metal injection molding. An increasing trend in viscosity of the copper mixes with powder loading was noted. Copper/MWCNTs composite mixes showed viscosity more than 1000 Pa.s perhaps due to addition of MWCNTs and increasing trend in viscosity of copper/MWECNTs was recorded. The results of flow data showed that all copper composite mix containing up to 10 Vol.% MWCNTs were successfully injection molding and test samples were produced.
SOA-Based Integration Research of Integrated Management to the Municipal County Dispatch System
Authors: Wen Zhi Ming
Published: December 2011

The intelligent dispatch is important link in the intelligent electrical network construction, By the service architecture and the WEB technology, this article solves the municipal county intelligence scheduling problem. On the one hand, it has solved the dispatching and data-sharing issues of the inter-county, realized the inspection which moved to the county, the information uploaded which moved to the super rank; on the other hand, it has released the dispatching personnel from the traditional paper, the form and the man-dispatch to attain the more standardized dispatching system and raise the work quality and efficiency; and finally, to promote the management standard of the municipal county dispatch completely.
Hyperspectral Unmixing Using Statistics of Q Function
Authors: Ahmad Muhammad , Haq Ihsan Ul
Published: December 2011

Proposed technique of hyperspectral unmixing is apparent to implement and compute the results in a very fast and efficient manner. To reducing the computational complexity and to estimation of hyperspectral data we adopted a statistical method of median absolute deviation about median. Number of end-members is enumerating by self iterative subspace projection method which depends on Pearson correlation. The mixing matrix is inferred by using Q function projections. A set of tests with real hyperspectral data evaluates the performance and illustrates the effectiveness of the proposed method. For the evaluation of proposed method, the results are compared with the results of vertex component analysis. The experimental results show the effectiveness of proposed method on hyperspectral unmixing. targets Alunite, Buddingtonite, Calcite, Kaolinite, and Muscovite are detected well and have high spectral similarities. Hyperspectral remote sensing is used in a large array of real life applications e.g. Surveillance, Mineralogy, Physics, and Agriculture. The complete work is prepared by using MATLAB.
The Role of MgCl2 in Preparation of SnO2, MgSnO3 and Mg2SnO4 Nanopowders
Authors: Taherkhani Ali , Asghari A.Taheri
Published: December 2011

Tin oxide (SnO2) ,MgSnO3and Mg2SnO4nanocrystals have been synthesized by one-step solid-state reactions. in the first step, The powder of SnCl4.5H2O was mixed with MgCl2and Mg(OH)2with weight ratio of Sn to Mg (1:1), (2:1) And (1:2) in an air atmosphere at room, and annealing temperature in this work were 200°C, 400°C ,600°C , 800°C and 1000°C . XRD patterns show the SnO2, MgSnO3and Mg2SnO4particle size of synthesized powders by MgCl2were 3 nm, 4nm and 27 nm respectively. In fact the excess amount of Mg role of crystallite growth inhibitor in SnO2. this method is a simple ,inexpensive ,efficient and economic preparation for SnO2, MgSnO3and Mg2SnO4nanoparticles with adjustable grain sizes in the range of 3-44nm in high yield. This article shows the role of mass MgCl2in producing of SnO2nanoparticles.