bluuebunny/crossref_metadata_2025 huggingface dataset:
Heat Transfer of Oscillating-Move Pin-Fin Heat Sinks with Circular Impinging Jets
Authors: Jeng Tzer Ming , Tzeng Sheng Chung , Liu Chi Huang , Huang Yu Xiang
Published: December 2013

This work experimentally investigated the effect of the oscillation move on the heat transfer enhancement of the pin-fin heat sinks with circular impinging jets. The forced convective cooling system usually applies the steady flow to pass through a stationary object. This work mounted the pin-fin heat sinks onto an oscillating platform with the impinging air jets. The experimental results indicate that strokes of the platform moving up and down as well as left and right are too long to enhance the overall heat transfer of the pin-fin heat sinks.
Using Soft Material as Die during Hot Forging
Authors: Cheng Fang Sung , Chen Yi Sheng
Published: December 2013

This study introduces a new forming concept for hot forging by using soft die. The soft die (AISI1050) was employed not only to heating the billet, but also to forming the billet. In this proposed method, the soft die can be used as the electrode to raise the temperature of billet directly by resistance heating. The temperature of the billet is higher; the flow stress of the billet is become lower. Then the billet is easier to press into the cavity of the soft die. In addition, the soft die itself could not be heated by the electrifying and the temperature raise of soft die was occurred by the heat transfer from the heated billet. Therefore, the soft die can be carried out on hot forging process, and to achieve the purpose of forming. The result of experiments shows that the billet could be heated quickly to 1000°C in about 5 seconds, and a spur gear was successfully formed. With the proposed method, it was simple enough to hot forging high-alloy metals with poor workability.
The Meshing Efficiency Analysis of Coupled Planetary Gear Reducer
Authors: Hsieh Long Chang , Tang Hsiu Chen
Published: December 2013

This paper focus on the meshing efficiency of 2K-2H type planetary gear reducer. First, according to the concept of train value equation, the kinematic design of 2K-2H type planetary gear reducers is carried out. Then, based on the latent power theorem, the meshing efficiency equation of 2K-2H type planetary gear reducer is derived. According to the meshing efficiency equation, the meshing efficiency of 2K-2H type planetary gear reducer can be analyzed. The 2K-2H type planetary gear reducer has the following characteristics: 1. There is a problem of power circulation, 2.Larger reduction ratio makes less meshing efficiency, 3.For the same reduction ratio, larger value |ξ42| (|ξα|) will get better meshing efficiency, and 4.The better quality of gears (manufactured by grinding) will produce much better meshing efficiency.
The Design of Multiple Function Acoustic Horns for Ultrasonic Welding of Plastic
Authors: Shu Kuen Ming , Wang Yu Jen , Chi Chi Wei
Published: December 2013

The acoustic solid horns are the important parts in high power ultrasonic vibrating systems, and its design is critical to the quality and the efficiency of ultrasonic welding. The using of multiple function acoustic horn can reduce machining time very effectively. This paper performs the analysis and design of multiple function acoustic horns for ultrasonic welding of plastic by employing ANSYS finite element software. Firstly, the theoretical dimensions of the horns are calculated. Moreover, their natural frequencies and amplitudes are obtained through the simulations of ANSYS. Experiments are currently being set up to verify the validity of the analytical results.
The Characterization of Alumina Reinforced with CNT by the Mechanical Alloying Method
Authors: Kim Gwi Nam , Bae Gyung Tae , Park Joun Sung , Choi Boo Young , Huh Sunchul
Published: December 2013

Carbon nano tube(CNT) possesses excellent electrical, mechanical and thermal properties. Therefore, it has been applied in a variety of fields. In this study, we added CNT in Al2O3 to improve the characteristics. The composite of CNT(1.5 wt%), Al2O3(∅=20nm), zirconia(90g) and ethanol(20ml) is deconcentrated with planetary ball mill for 1hr, 3hr, 5hr under 200rpm, 300rpm, respectively. The prepared powder was pressed under 14MPa uniaxialy after the composite was dried in the oven at 90°C, and then the powder is pressed again by Cold Isostatic Press(CIP) with 200MPa. Then reinforced alumina matrix composites with CNT was sintered by high temperature furnace at 1525 °C
Optimal Yield Rate in ACF Cutting Process of TFT-LCD Module Using Orthogonal Particle Swarm Optimization
Authors: Kuo Jian Long , Hsieh Chung Hao
Published: December 2013

Anisotropic Conductive Film (ACF) is essential material in LCM (Liquid Crystal Module) process. It is used in bonding process to make the driving circuit conductive. Because the price of TFT-LCD is much lower than before in recent years, the ACF cost has relatively higher ratio in manufacture cost. The conventional long bar ACF cutting unit is changed to short bar ACF cutting unit in new bonding technology. However, the new type machine was not optimized in process and mechanical design. Therefore, the failure rate of new ACF cutting process is much higher than the one of the conventional process. This wastes the material and rework cost is considerably large. How to make the manufacturing cost down effectively and promote the product quality is the concern issue to maintain competition capability for the product. Therefore, the Orthogonal Particle Swarm Optimization is used to analyze the optimal design problem. The ACF cutting yield rate is selected to be objective function for optimization. The quality characteristic function is used in Orthogonal Particle Swarm Optimization. The plasma clean speed, ACF peeling speed and ACF cutter spring setting are selected to study the effect of the yield rate. Results show that the proposed method can provide good solution to improve the ACF cutting process for TFTLCD.
An Optimal Design for New Electromagnetic Valve in Camless Engines
Authors: Dat Ly Vinh , Shiao Yao Jung , Le Thanh Phuc
Published: December 2013

Some previous studies have demonstrated that electromagnetic valve (EMV), which uses permanent magnet and electromagnetic coil (PM/EM) hybrid actuator, has some benefits about actuator control, energy consumption, time response compared with conventional EMVs. In this paper, a new EMV with PM/EM actuator, which significantly differs from existing EMVs, has been proposed. The EMV design has been examined and analyzed by finite element. The results conclude that the EMV satisfies the requirement of dimension space limit. Moreover, the optimal EMV design meets the requirements of transition time and holding force. The holding force can reach about 719 N and drop 42.22% for valve releasing if desired current is supplied to the coils. Therefore, the EMV can fully control the closed and open of valve timings at maximum speed in SI engines.
Study on Bevel Gear Worm Forging by Finite Element Analysis
Authors: Yang Tung Sheng , Lai Li Hong , Deng Ji Hong
Published: December 2013

This study applies the finite element method (FEM) to predict maximum forging load and effective strain in bevel gear forging. Maximum forging load and effective strain are determined for different process parameters, such as modules, number of teeth, and die temperature of the bevel gear forging, using the FEM. Finally, the prediction of the power requirement for the bevel gear warm forging is determined.
Pressure Distribution in the Air Film and the Porous Conveyor Air Bearing
Authors: Huang Te Yen , Shen Song Chiang , Lin Sheam Chyun , Hsu Shao Yu
Published: December 2013

The porous aerostatic conveyor bearings are used to feed large substrates such as the flat panel display glass sheets and the silicon wafers by supporting them with compressed air in a non-contact condition. Due to unevenly distributed pressure in the air film between the substrate and the porous aerostatic conveyor bearing, the soft substrate often deforms and tilts on the bearing pad during the feeding process. In order to investigate the pressure distribution in the air gap, the CFD software, FLUENT, was employed to simulate the operation of the porous aerostatic conveyor bearing during the feeding process. In addition, the load capacity of the conveyor air bearing was calculated. The results show there is low vacuum pressure around the air discharge holes. The high pressure above the air supply holes forms two paraboloidal distributions in the air film. For design modification, the air supply and the air discharge holes need to be rearranged and/or relocated to improve the pressure distribution in the air film for more stable feeding of the substrate.
Dynamics of a Quadruped Walking Machine
Authors: Chen Fu Chen , Wu Shang Chen , Chen Yung Cheng
Published: December 2013

The purpose of this study is to propose a new quadruped walking machine and investigate its dynamics. This paper first proposes a new quadruped walking machine and introduces its structure. The basic theory behind the equation of motion is briefly introduced. The dynamic characteristics of the walking machine, including the position, velocity, acceleration, support leg sequence, foot trajectory and pitch angle, are investigated and compared with the existing design. The results show that better transmission efficiency is achieved when the driving torque of the walking machine acts on the shaft of the crank. Compared to the existing design, the design proposed in this study has fewer changes in pitch angle during movement and exhibits less skidding while changing support leg.
Magnetostatic Field Analysis of Disk-Type Permanent-Magnet Motors
Authors: Wu Yi Chang , Hong Yi Cheng
Published: December 2013

The aim of this paper is to analyze the magnetostatic field of disk-type permanent-magnet motors by utilizing the 1-D equivalent magnetic circuit approach and the finite-element method. A 1-D equivalent magnetic circuit model, which is analogous to an electric circuit model, of the disk-type permanent-magnet motor is proposed. The accuracy of the analytical model is verified by a commercial 3-D finite-element analysis (FEA) package. The result shows that the air-gap flux density is in good agreement with an acceptable error of about 1.66%. The presented magnetic circuit approach is not only an accurate technique in predicting the magnetostatic field of disk-type permanent-magnet motors, but also effectively reduces the computing time. It is especially suitable for the preliminary design and optimization of permanent-magnet motors with axial-flux topologies.
An Integrated CFD and Experimental Study of the In-Line Fan
Authors: Yen Hung Cheng , Hsu Wen Syang , Cheng Yung Jen , Lin Sheam Chyun , Wu Yu Chuan
Published: December 2013

This study analyzes the flow flied and the guide vane associated with an in-line fan by an integrated numerical and experimental investigation. At first, the flow field associated with the fan is simulated by using a commercial CFD code Fluent with the finite volume method. In addition, the guiding vane profile is imposed and modified by examining characteristics of flow field. An appropriate guiding vane with high-performance and low-noise feature can be achieved after several design iterations. To manufacture the mock-up for experimental verification, the designed fan is expressed in the CAD/CAM format for the rapid-prototype technique. Moreover, a set of relations correlating the performance and noise of this fan prototype are executed with the aids of AMCA test chamber and semi-anechoic chamber, respectively. Consequently, the feasibility of design scheme and numerical system can be verified according to these experimental results. In summary, this work provides a systematic scheme for designing and analyzing the in-line fan.
Seismic Response for a One-Third Scale-Down Vertical Cylindrical Cask Specimen Using Cyclic Loading Testing
Authors: Lin Wei Ting , Fu Tseng Chih , Wu Yuan Chieh , Huang Chin Cheng
Published: December 2013

Since the friction coefficient is critical to the seismic stability of a freestanding cask, cyclic loading tests of a 1/3 scale-down pedestal specimen of the INER-dry storage cask system, which will be used in Taiwan, were conducted to acquire the actual friction coefficient at the cask/pad interface as well as the effect of normal stress and sliding rate on it. Test results indicated that the cyclic frequency had few influence on the friction coefficient and the friction coefficient increased with the normal stress increased. The friction coefficient of the vertical cylindrical cask with an add-on shield, vertical cylindrical cask and add-on shield under actual loading condition was about 0.67, 0.60 and 0.73, respectively. Based on the frictional properties at the cask/pad interface obtained from the test results, it was performed to ensure the actual seismic stability of this INER-dry storage cask system under the design base earthquake.
Microstructure Design of Surface Permanent Magnet and Tooth Surface Stator in Brushless DC Motor with Low Rare Earth Material
Authors: Yu Hsing Cheng , Yu Bo Syun
Published: December 2013

Permanent magnet (PM) brushless DC motors (BLDCMs) are widely applied in industrial drives. However, the price rising of rare earth resource resulted in country policy restriction, so it is detrimental for mass production of PM-BLDCMs. As a result, the design and manufacture tendency of PM-BLDCMs are smaller and slighter in adopting rare earth materials of PMs. Additional, the magnetic flux density of PMs are difficult to improve in the near future. The effective method is to decrease stator reluctance and to adjust magnetic flux distribution of the air gap in stator design. Hence, the surface permanent magnets (SPMs) and tooth surface stators (TSSs) are designed to improve the motor performance, and are calculated by ﬁnite-element analysis (FEA) software in this study. Various hemicycle groove microstructures of SPMs and TSSs for designing, analyzing and optimizing are considered to observe the magnetic field strength distribution and to reduce the cogging torque in PM-BLDCMs, and the FEA result can be regarded as important references of motor structure design. The cogging torque can be reduced 80.9% in SPM3-model and can be decayed 89.2% in TSS2-model versus original model separately, and the cogging torque of the optimal combination of SPM-BLDCM can be abated 62.4%. Furthermore, the usage amount of rare earth material volume in designed SPM-BLDCMs can be reduced 5.3% in average. Finally, a prototype of the SPM- BLDCM has been constructed to prove the simulation design.
Application of Artificial Neural Networks for Diagnosing Acute Appendicitis
Authors: Park Sung Yun , Lee Sangjoon , Jeong Jae Hoon , Kim Sung Min
Published: December 2013

The purpose of this study is to develop an appendicitis diagnosis system, by using artificial neural networks (ANNs). Acute appendicitis is one of the most common surgical emergencies of the abdomen. Various methods have been developed to diagnose appendicitis, but these methods have not shown good performance in the Middle East and Asia, or even in the West. We used the structures of ANNs with 801 patients. These various structures are a multilayer neural network structure (MLNN), a radial basis function neural network structure (RBF), and a probabilistic neural network structure (PNN). The Alvarado clinical scoring system was used for comparison with the ANNs. The accuracy of MLNN, RBF, PNN, and Alvarado was 97.84%, 99.80%, 99.41% and 72.19%, respectively. The AUC of MLNN, RBF, PNN, and Alvarado was 0.985, 0.998, 0.993, and 0.633, respectively. The performance of ANNs was significantly better than the Alvarado clinical scoring system (P<0.001). The models developed to diagnose appendicitis using ANNs showed good performance. We consider that the developed models can help junior clinical surgeons diagnose appendicitis.
A Newly Developed Polyurethane Prosthetic Heart Valve
Authors: Kang Yaw Hong , Vu Ha Hai , Hsu Cheung Hwa , Yang Kai Wen , Shih Wu Chiao
Published: December 2013

Polyurethane prosthetic heart valve tried to imitate the geometry of native valve that might perhaps show better performance which is close to natural valve. However, the geometry of natural valve is very complex and there are variety of parameters can affect performances of the valves. This study has simplified the geometry of natural valve so that there are only four parameters needs to be considered. The four parameters include the fundamental curve, the free edge angle, the valve height, and the leaflet thickness. The study investigated the influence of these four parameters on biomechanics of the polyurethane prosthetic valves.
In-Plane Electromagnetic Generator Fabricated on Printed Circuit Board Technology
Authors: Pan C.T. , Hsu F.T. , Nien C.C. , Liu Z.H. , Chen Y.J. , Chen P.H.
Published: December 2013

Small and efficient energy harvesters, as a renewable power supply, draw lots of attention in the last few years. This paper presents a planar rotary electromagnetic generator with copper coils fabricated by using printed circuit board (PCB) as inductance and Nd-Fe-B magnets as magnetic element. Coils are fabricated on PCB, which is presumably cost-effective and promising methods. 28-pole Nd-Fe-B magnets with outer diameter of 50 mm and thickness of 2 mm was sintered and magnetized, which can provide magnetic field of 1.44 Tesla. This harvester consists of planar multilayer with multi-pole coils and multi-pole permanent magnet, and the volume of this harvester is about 50x50x2.5 mm3. Finite element analysis is used to design energy harvesting system, and simulation model of the energy harvester is established. In order to verify the simulation, experiment data are compared with simulation result. The PCB energy harvester prototype can generate induced voltage 0.61 V and 13.29mW output power at rotary speed of 4,000 rpm.
Wide Area Input Stabilizer for Damping of Power System Inter-Area Oscillation
Authors: Doan Van Dien , Tseng Ta Hsiu , Huang Pei Hwa
Published: December 2013

The main objective of this paper is to report the small signal stability analysis of Vietnam Power System which has a longitudinal network structure with the consideration of power system stabilizer (PSS) in operation to enhance the damping of inter-area oscillation by using local as well as remote feedback signals via phasor measurement unit (PMU). Both methods of frequency domain and time domain analyses are used to investigate the performance of the power system. The study results show that by proper selection of PSS installation locations and remote feedback signals, power oscillations on the tie-line will be reduced and the system stability is thus improved.
Development of Serial-Connected High Step-Up DC-DC Converter with Single Switch
Authors: Liu Van Tsai , Hsu Chien Hao
Published: December 2013

In this paper, a novel high step-up DC-DC converter has been designed for fuel cell applications. The proposed high step-up converter can be used for various portable energy storage components such as fuel cells which are used for hybrid electric vehicles (HEV), and light electric vehicles (LEV).The proposed converter is integrated by boost circuit, voltage lift capacitor, and coupled-inductor techniques to achieve high step-up voltage and has several advantages. First, the circuit is controlled by one single pulse width modulation (PWM). Second, the converter consists of active clamp circuit to recycle the leakage inductance and send to output capacitor so that the voltage spike on active switch is suppressed and efficiency is also improved. Third, by using the winding of secondary boost circuit, and voltage lift capacitor techniques, the high voltage gain can be achieved without more than 50% duty ratio, and the slope compensation circuit can also be simplified.Finally, a 1k W prototype converter is implemented, to verify the performance of the proposed converter with input voltage 48V, output voltage 400V, and output power 1k W is also achieved. The highest efficiency is 92.96% at 400W, and the full-load efficiency is up to 90.48%.
LAPUR6 Stability Analysis on Power/Flow Map of Lungmen ABWR
Authors: Lin Hao Tzu , Wang Jong Rong , Chen Kuan Yu , Chen Shao Hsuan , Shih Chun Kuan
Published: December 2013

This research aims at investigating the instability phenomena on the power-flow operating map of Lungmen nuclear power plant (NPP). Lungmen NPP is the first ABWR (Advanced Boiling Water Reactor) and under construction in Taiwan. It consists of two identical units with 3926 MWt rated thermal power and 52.2×106 kg/hr rated core flow. In this research, decay ratios (the stability index) are calculated by LAPUR6. LAPUR6 is an analyzing core instability computer code based on the frequency domain approach. Before investigating the stability on Lungmen NPP operating map, some additional state points are carried out for validating with the SIRIUS-F experimental data. LAPUR6 results are consistent with the SIRIUS-F experimental data. Besides, LAPUR6 results of Lungmen NPP operating map show that the Lungmen NPP will not encounter core-wide or regional instability under normal operating or RIP trip event.
Comparison of Three Short Term Photovoltaic System Power Generation Forecasting Methods
Authors: Chang Wen Yeau
Published: December 2013

An accurate forecasting method for solar power generation of the photovoltaic (PV) system is urgent needed under the relevant issues associated with the high penetration of solar power in the electricity system. This paper presents a comparison of three forecasting approaches on short term solar power generation of PV system. Three forecasting methods, namely, persistence method, back propagation neural network method, and radial basis function (RBF) neural network method, are investigated. To demonstrate the performance of three methods, the methods are tested on the practical information of solar power generation of a PV system. The performance is evaluated based on two indexes, namely, maximum absolute percent error and mean absolute percent error.
Optimal Penetration of Photovoltaic Systems in Distribution Networks
Authors: Hsieh Wei Lin , Lin Chia Hung , Chen Chao Shun , Hsu Cheng Ting , Ho Chin Ying , Chuang Hui Jen
Published: December 2013

The penetration level of a PV system is often limited due to the violation of voltage variation introduced by the large intermittent power generation. This paper discusses the use of an active power curtailment strategy to reduce PV power injection during peak solar irradiation to prevent voltage violation so that the PV penetration level of a distribution feeder can be increased to fully utilize solar energy. When using the proposed voltage control scheme for limiting PV power injection into the study distribution feeder during high solar irradiation periods, the total power generation and total energy delivered by the PV system over a 1-year period are determined according to the annual duration of solar irradiation. With the proposed voltage control to perform the partial generation rejection of PV systems, the optimal installation capacity of PV systems can be determined by maximizing the net present value of the system so that better cost effectiveness of the PV project and better utilization of solar energy can be obtained.
HCPV Module Temperature Prediction: A Case Study Based on Measurements at NPUST
Authors: Wang Y.N. , Fu L.M. , Tsai C.H. , Hsu Yao Tung , Lin Tsung Te , Leong J.C.
Published: December 2013

The subject of study in this work is a 135 Wp high concentration photovoltaic module with III-V solar cells. The module is currently installed in NPUST. Three equation forms for module temperature prediction were investigated. The simplest form predicts the module temperature quite well. Among these forms, the third form which takes into account the direct normal radiation yields the least error. The efficiency of the module was about 21% between 10:00 a.m. and 3:00 p.m. and the amount of power the module generates was linearly dependent on the electricity current.
The Friction Characteristics and Microscopic Properties of Composite Electroplating Thin Films
Authors: Wang Shih Han , Chiang Chia Chin , Tsai Liren , Fang Wen Chung , Huang Jian Long
Published: December 2013

The development of composite thin film materials bloomed with increasing demand and technical improvements. They have been used in various engineering areas, such as micro-conductor, sensors, and micro-electro-mechanical-system (MEMS) [1-. Nowadays, scientists were able to electroplate silicon carbide thin films directly on metal materials. Silicon carbide has many excellent mechanical properties, such as high Youngs modulus, high melting point, high hardness, and chemical inertness with resistance to high temperature oxidation and creep [4-7]. It is widely utilized in automotive and aerospace industry. Hence, it is very important to improve the durability and reliability of electroplated silicon carbide thin films.
An Integrated Realization of Motion Control and Motor Drives with FPGA
Authors: Lai Chiu Keng , Tsao Yaw Ting , Tsai Shou Liang , Chen Wei Nan
Published: December 2013

Since the Field Programmable Gate Arrays (FPGAs) with high density are available nowadays, systems with complex functions can be realized by FPGA in a single chip while they are usually traditionally implemented by several individual chips. In this research, the drives as well as motion controller are integrated and implemented on Altera Cyclone III FPGA. The system is also evaluated by applying it to a 3-axis motion platform driven by stepping motors. Finally, experimental results of current regulator and motion controller are shown to prove the validness.
Optimization of the Neural Muscular Drive and Respiratory Signals under Dead Space Loading and CO2 Inhalation
Authors: Lin Shyan Lung , Chen Tsung Chi , Chang Hsing Cheng
Published: December 2013

In this paper, we simulate the effect of imposed external dead space by examining the optimized neural muscular drive and respiratory signals, including, airflow and lung volume profiles. To study the effect of external dead space loading, the measurement model by Gray is used and human respiratory control simulator based on an optimal respiratory control mechanism is implemented. The respiratory control simulations are performed with external dead space loading (0, 0.4 and 0.8 l) under rest and CO2 inhalation of 3% to 7%. The waveshaping of both the imposed external dead space and CO2 inhalation on the respiratory waveforms are studied.
Preparation and Characterization of Cubic and Rod-Shaped Indium Tin Oxide Powders Using the Hydrothermal Process
Authors: Hsu Kuo Chin , Liao Jiunn Der , Xie Zheng Zhong , Fu Yaw Shyan
Published: December 2013

The cubic and rod-shaped powders of indium tin oxide were synthesized at a stable temperature reaction for 18h using the surfactant aid hydrothermal method under various conditions. The cubic and rod-shaped powder size changes with the concentration of the precursor. The finished products of indium tin oxide can be obtained by calcination at 500°C for 2h in air. Characterization was conducted using scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), X-ray diffractometry (XRD), thermogravimetric analyzer/differential thermal analysis (TG/DTA) and the Brunauer-Emmett-Teller (BET). XRD analysis shows that the conditions of this experiment can produce pure ITO powders. The characterization of cubic and rod-shaped ITO powders is also discussed.
Design of Flight Control System Bus Controller of UAV Based on Double CAN-Bus
Authors: Pan Ji Hui , Zhang Sheng Bing , Ma Hao
Published: December 2013

This paper represents a new interconnected architecture of Flight control System (FCS). It can solve the problems of massive equipment and large cross link information. The interconnected architecture adopts double CAN-Bus to construct a redundant flight control systematic bus. This paper will illustrate the characters of double CAN-Bus comparing with the characters of CAN-Bus firstly. Then it will present the bus controller hardware design, allowance design, network communication protocol, software flow and code design respectively. The experimental results show that the bus is running well, can satisfy the small vehicle control system of a high real time capability and node demand, at the same time system has high reliability, open etc.
Hysteretic Nonlinear Characteristics of Giant Magnetostrictive Sensors
Authors: Zhu Zhi Wen , Zhang Qing Xin , Xu Jia
Published: December 2013

Hysteretic nonlinear characteristics of giant magnetostrictive sensor were studied in this paper. Nonlinear difference items were introduced to interpret the hysteresis phenomena of the strain-magnetic field intensity (MFI) curves of giant magnetostrictive material (GMM). The coupling relationship between strain and frequency was obtained in partial least-square regression method to describe the driftage phenomena of the strain-MFI curves of GMM in different frequencies. The mechanical model of giant magnetostrictive sensor was developed, and the nonlinear relationship between output voltage of giant magnetostrictive sensor and input excitation force was obtained. The nonlinear characteristics of giant magnetostrictive sensor were discussed, and the phenomena of accuracy aggravation in high frequency and delay of giant magnetostrictive sensor were explained. The new giant magnetostrictive sensor model has simple form and is easy to be analyzed in theory, which is helpful to measuring and control.
Experimental Evaluation of a Small-Displacement Sensing System Based on the Surface Plasmon Resonance Technology in Heterodyne Interferometry
Authors: Wang Shinn Fwu , Chen Chi Tun , Kao Fu Hsi , Chu Yi , Lay Shyh Rong , Liao Yu Pin , Lin Liuh Chii , Liu An Li
Published: December 2013

In this article, a small-displacement sensing system based on the surface plasmon resonance technology in heterodyne interferometry is proposed and evaluated. The basic sensing unit is composed of a prism assembly and a displacement probe. The prism assembly consists of a halfwave (λ/2) plate, two right-angle prisms and two rotation stages. The small-displacement sensor is with high sensitivity and resolution due to the attenuated total reflection effect in heterodyne interferometry. Besides, we can obtain the results of the experiment in a distant place by uses of the USB data acquisition card (DAQ card) and a ZigBee module. It can be found that the displacement resolution of the small-displacement sensor can reach 0.155nm by numerical simulation. The small-displacement sensor has some merits, e.g., easy operation, high measurement accuracy, high resolution and rapid measurement, etc.
Stepping Experiment and Characteristics Analysis of a Novel Biaxial Piezoelectric Actuated Stage
Authors: Mou Shann Chyi , Zhuang Yu Ren
Published: December 2013

In this research, our research team used the self-designed piezoelectric actuator to achieve the micro/nanometer level precise positioning biaxial piezoelectric actuated stage through the redesign of stage mechanism. A novel piezoelectric actuator structure - 4-9-9-14 piezoelectric actuator is constructed, and it is made of piezoelectric buzzer to drive the stage. The movement of the piezoelectric actuated stage is read and analyzed by means of NI PCI-6115 data acquisition card and LabVIEW software operating in conjunction with a linear encoder. The new consideration of tuning time Ton is used to place of traditional method of changing the magnitude of driving voltage to control the stepping distance of the stage. Under a constant driving voltage, the displacement of the stage increases with time Ton, and the displacement of the stage decreases with time Ton. The aforesaid phenomenon occurs to leftward or rightward movement of the upper stage and forward or backward movement of the lower stage. Given a constant time Ton, the displacement of the stage in motion decreases with the driving voltage, and the displacement of the stage in motion increases with the driving voltage.
The Design of Multi-Parameter Bio-Signal Sensor for Applying a Smartphone m-Health Service
Authors: Kim Sung Jae , Lee Sangjoon , Jeong Jae Hoon , Park Sung Yun , Kim Sung Min
Published: December 2013

In this study, the multi-parameter bio-signals sensor was proposed to apply smartphones into m-health service application. The proposed sensor for the experiments was consisted of one set of two small devices; the size of each sensor was 25 mm × 20 mm × 4 mm. This sensor was made of either copper or titanium in order to pursue the better body affinity as well as electric conductivity. A manufactured sensor was able to measure for major bio parameters including electrocardiogram (ECG) signal of a channel, temperature, photoplethysmography, and body fat. Further, independent analogue hardware was manufactured to measure the each bio parameter. In results, bio parameters were easily obtained and they will be effectively applied into smartphones.
Enhance A* Searching Algorithm Applying in Multiple Robot System
Authors: Su Kuo Lan , Li Bo Yi , Chung Cheng Yun
Published: December 2013

The article programs the shortest motion paths of the multiple mobile robots to be applied in the Chinese chess game, and presents the movement scenario of the chess using mobile robots on the grid based chessboard platform. Users play the chess game using the mouse to obey the evaluation algorithm on the user interface. The user interface programs the motion paths that are the shortest displacement using enhance A* searching algorithm and solves the collision problem of the programmed motion paths for the assigned chesses to and reprogram the new motion paths using enhance A* searching algorithm, too. The supervised computer controls mobile robots according to the programmed motion paths of the assigned chess moving on the platform via wireless RF interface. In the experimental results, we use simulation method to search the motion paths of the assigned chesses on the user interface, and implement the simulation results on the chessboard platform using mobile robots. Mobile robots move on the platform according to the programmed motion paths from the start points to the target points and avoid the collision points.
Fingerprint Identification Based on Mopso in SVM
Authors: Hu Chia Shing , Hu Chia Shing
Published: December 2013

Abstract. The problem of fingerprint classification is discussed for many years. Support Vector Machine (SVM) is a traditional artificial intelligence algorithm developed for dealing classification problems. In this paper, we used the idea of multi-objective optimization to transform SVM into a new form, since the core concept of SVM is built up on a single optimization equation, and some parameters for this algorithm still need user to make tons of experiment to determine. Our algorithm has successfully proved that user do not need to make experiment to determine the penalty parameter C. NIST-4 database is used to assess our proposed algorithm. The experiment results show our method can get good classification results.
Application of Maple on Evaluation of Definite Integrals
Authors: Yu Chii Huei
Published: December 2013

This study uses the mathematical software Maple for the auxiliary tool to evaluate two types of definite integrals. We can determine the closed forms of these two types of definite integrals by using Leibniz differential rule and differentiation with respect to a parameter. At the same time, we provide some definite integrals to do calculation practically. The research methods adopted in this study involved finding solutions through manual calculations and verifying these solutions by using Maple. This type of research method not only allows the discovery of calculation errors, but also helps modify the original directions of thinking from manual and Maple calculations. Therefore, Maple provides insights and guidance regarding problem-solving methods.
Facial Expression Generated Automatically Using Triangular Segmentation
Authors: Sheu Jia Shing , Hsieh Tsu Shien , Shou Ho Nien
Published: December 2013

The advancement in computer technology provided instant messaging software that makes human interactions possible and dynamic. However, such software cannot convey actual emotions and lack a realistic depiction of feelings. Instant messaging will be more interesting if users’ facial images are integrated into a virtual portrait that can automatically create images with different expressions. This study uses triangular segmentation to generate facial expressions. The application of an image editing technique is introduced to automatically create images with expressions from an expressionless facial image. The probable facial regions are separated from the background of the facial image through skin segmentation and noise filtration morphology. The control points of feature shapes are marked on the image to create facial expressions. Triangular segmentation, image correction, and image interpolation technique are applied. Image processing technology is also used to transform the space of features, thus generating a new expression.
Study the Rheological Property of Gel Abrasives in Magnetic Abrasive Finishing
Authors: Wang A Cheng , Tsai Lung , Lin Yan Cherng
Published: December 2013

Magnetic finishing with gel abrasive (MFGA) performs better than magnetic abrasive finishing (MAF) in terms of polishing efficiency. However, silicone gels are semi-solid polymer gels with deforming properties that are temperature dependent materials, ultimately degrading the polishing efficiency in MFGA significantly. Therefore, this study evaluated the MFGA mechanism to elucidate the properties of silicone gels in order to attain both the finished effect in MFGA and effective gel abrasives to produce a highly efficient polished surface. Cylindrical rods were polished using silicone gels with different plasticity to determine the temperature of abrasive media in the working area. Next, circulating effects of abrasive media were identified to ensure the efficiency in MFGA. Additionally, finding the relation between the concentrations of abrasive media and circulating effect in the working area. Experimental results showed that silicone gels with low plasticity produced high temperature of abrasive media in MFGA, and high temperature of abrasive medium made excellent circulating effect in the working area, inducing high material removal and fine surface roughness.
Robust Observer-Based Output Feedback Control for Time-Varying Systems
Authors: Feng Chieh Chuan
Published: December 2013

In this paper, we study the robust output feedback control for a class of time-varying systems where the observer is used to estimate the system states and a learning scheme is also proposed to learn the time-varying parameters. A regulator control problem is pursued with known time-varying bounds. It is shown that to estimate the system states asymptotically only part of the time-varying function need to be learned, not necessarily all the time-varying parameters. The designed output feedback closed-loop control system guarantees a robust norm bound performance measure and uniformly asymptotic stability based on quadratic stability.
A Automatic Vehicle License Plate Location Based on Sobel Edge Method
Authors: Lee Rong Choi , Hung King Chu , Wang Huan Sheng
Published: December 2013

This thesis is to approach license-plate location using Sobel mask operator for license-plate location. This thesis consists of three main parts. The first part is to gray and HSI transform and cut image to reduce image scan time. The second part is to use Sobel edge function and use scan line scanning image to find license-plate. The third part is to locate and extract the license-plate. The last step is license plate and through 2D Haar Discrete Wavelet Transform two times, after transform only selected LL low-frequency parts and will the data arrange into a row when license plate the feature values. The experimental result can be high location rate. Hence, Sobel edge image is a good each of methods.
Impacts of Langauge Learning Based on Computer-Assisted Language Learning Instruction
Authors: Hwang Yan Ling , Huang Pei Wen , Hsu Li Ping
Published: December 2013

In order to enhance students' learning motivation, scholars have been investigating the best teaching instruction methods for learning English. The efficacy of multimedia has drawn great attention to this issue and is presumed, under the assumption of adding an additional channel of media to transmit a message, to dramatically enhance communication and comprehension.1 Multimedia technology (such as TV, computers, networks, Youtube, E-mail, and interactive multimedia) aids the teaching technique of integrating real-life target language situations into the language classroom. In this particular setting, learners gradually develop their language skills by being exposed to genuine target language environments. Hartman indicated that the multiple-channel theory, involving at least two of the channels under consideration here, increases learners' language comprehension. 2
A Gesture Recognition Based on Accelerometer and Hidden Markov Model for Human Computer Communication
Authors: Wang Shu Lin , Zhang Zhe George , Guo You Gang
Published: December 2013

Along with the continuous changes and improvement of information technology, remote controls are widely used in smart living, robot control, Sign language systems, and so on. However, the human-computer communication needs to be diversified in the future. In particular, users are not intuitive when applying a special application or remote control environment, thus, this study applying Nintendo Wii remote as a human-computer interface device, to capture motion data by built-in three-axis accelerometer sensor, and training and recognize with Hidden Markov Model. First, we apply a gesture recognize system, to enhance the interactive ability of three-axis accelerometer sensor, gesture commands are trainable by user on-demand, and users can interactive with different computer applications through the gesture command has been trained. Finally, this study had issued a Gesture Recognition approach for intelligent interactive system design and for future study.
Program for Quantification Temperature and Aerodynamic Mode of Double-Skin Facade
Authors: Palko Milan
Published: December 2013

Program functional diagram. Dimensional and physical quantification of individual parts of double-skin facade. Reference year for Bratislava. Direct normal solar radiation, diffuse solar radiation and its transformation to required surface. Mass flow rate designation by intermediate space of double-skin facade by means of iteration method. Mode of double transparent facades from natural convection for day or night. Mode at wind effect. Conditions for designation of algorithm suitability for specific moment.
Influence of Exact Values of Increase of Thermal Transmittance because of Thermal Bridges on Energy Need for Heating of Panel Residential Houses in Original State and after Renewal
Authors: Menďan Rastislav
Published: December 2013

The paper presents calculated values of increase of thermal transmittance because of thermal bridges (ΔU value) of panel residential houses of mass housing development. These values are compared with general values, which are given in the standard STN 73 0540-2 and afterwards a specific energy need for heating considering exact ΔU values but also general ΔU values was calculated as well. The residential houses were evaluated in original state and in state after the renewal by adding thermal insulation on walls, roof and after replacement of windows.
Comparison of Thermal Bridges Calculate Method through Window Jamb
Authors: Ingeli Rastislav
Published: December 2013

This paper is focused on comparison of thermal bridges calculate method through window jamb in building envelopes. The present approach is based on an integrated 2D dynamic simulation. The theoretical background of the adopted approach is presented. The reliability of this approach in evaluating thermal bridges as well as its applicability to different geometric shapes is proved. Detailed specification and calculation of each thermal bridge in these buildings should be taken into account. the heat flow through a building construction is considered to be of the onedimensional (1D) type. This is because the thermal conductance and temperature differential in this direction are much greater than that in the lateral directions. The thermal bridge is the part of the building envelope through which heat conduction is multi-dimensional. Therefore, in recent studies, the problem of heat conduction in the building construction has been treated as a multi-dimensional.
Comparison of HAM Simulation with Different Reference Years for Bratislava
Authors: Juráš Peter , Žilinský Juraj
Published: December 2013

This article deals with issue of creation test reference year of Bratislava area. It describes the selection of the worst year from years 1996 - 2012 (17 years) according to the hygrothermal performance of building envelope. For comparison and selection the HAM simulation program WUFI was used. Two walls were taken into account aerated clay brick and aerated clay brick wall with ETICS based on EPS polystyrene insulation.
Facade Rendering Disorders of Building Envelopes and the Classification the Underlying Factors of Creation Failures
Authors: Pernišová Alena
Published: December 2013

There is a group of building structures having facade rendering as surface finishing, except for a large family of glazing facades and facing facades. This group of structures puts the finishing touches to our everyday space in architectural terms considering not only the colours, but also various facade rendering finishes structure. On the contrary, in practice there are different kinds of facade rendering disorders. In terms of generation of facade rendering disorders, facades rendering sloughing as well as cracks formation within the facade rendering or in blocks and fittings joint areas, which can cause extensive defects, are the biggest problematic issues.
The Impact of the Installed Inlet Vent Flaps in the Window Structure on the Overall Acoustic Properties of the Window
Authors: Majsniar Vladimir , Bielek Boris , Szabó Daniel
Published: December 2013

The impact of the installed inlet vent flaps on the window structure on the overall acoustic properties of a conventional triple glazed window and window glazed by the triple glazing with improved acoustic properties. Methodology and results of measurements.
Fire Dynamic Simulation and Impact of Water Sprinkler Systems to Heat Flow
Authors: Juríčková Michaela
Published: December 2013

The geometry, ventilation, building construction and the other aspects are very important for the correct designing of the buildings. The building can be designed correctly only by the coordination between all parts of the designing. Especially for large building the coordination between civil part and fire protection is very important. The PC modeling of the fire is cheap and effective form to show the real fire behavior. The fire dynamic simulations could help to make a correct design.
Damage of the Wood by Biological Factors, Fire and Methods of its Protection
Authors: Miklósiová Terezia
Published: December 2013

Wood as a basic building material was used in the past. It was used for construction of roofs, windows, doors, ceilings as well as for building of whole houses and outbuildings, mostly in the countryside and mountains. Wood is an organic product, which does not last forever. In case of appropriate condition it could be degraded by atmospheric impacts, plants and animal organisms.