bluuebunny/crossref_metadata_2025 huggingface dataset:
Detection Method for the Internal Defect of the Part Based on the Lever Balance Principle
Authors: Gan Yong , Li Yu Gang , Zhang Fu Zhi
Published: March 2013

Abstract: A detection method for the internal defect of the part based on the lever balance principle was presented; the defect method realized indirectly the nondestructive measurement through the relation of the volume and mass of the part’s internal pore or crack and the force change in the lever balanced system. On the basis of the relation of the part’s weight and the balances of the forces and the moments, the forces of the different position was measured in the lever balanced system after the part moved the minute distance through the fulcrum according to a certain directions. It calculated the every lamellar mass of the part and the coordinate values of the corresponding lamellar. Combined the equations of every lamellar masses and the equations of the center of gravity, and established the database of the every lamellar masses, it can realize the non-destructive detection for the internal defect of the part by computer. The measure principles, the mathematical theory basis and the detection method for the part’s internal pore or crack were introduced in details about the detection method based on the lever balance principle. The detection method can be operated simply and feasible and credible.
Small Oblique Angle Technique for Principal-Strain Separation in Luminescent Photoelastic Coating
Authors: Hua Shi Qun , Luo Ying
Published: March 2013

To determine the individual values of the two strain components by separate principal strains, a theoretical model of strain separation by oblique incidence with a new luminescent photoelastic coating configuration is presented. Considering the non-strain related refraction effect included in the total optical response at oblique incidence, the small incidence angle technique for simplifying the post-processing complexity is given. To affirm the validity of this strain separation method based on small oblique angles, the signal-to-noise ratio for providing sufficient signal intensity has been theoretically analyzed.
Research on the Measurement and Control Technology of Controllable Alternating Magnetic Field Generator to Magnetized Breed
Authors: Hu Guo Wen , Zhang Li Sheng , Wang Lin , Wang Yin Jie
Published: March 2013

Controlled and alternating induction magnetic field generation device which induces plant seeds to breed on floor space has been developed. The incentive ferrite induction coil is used in the device to produce induced magnetic field. The common AC-DC-AC topology was adopted for the variable frequency power supply, and AC power inverter circuit adopts SPWM inverter frequency modulation and voltage regulation mode, realizing the sinusoidal VVF. In order to improve the conversion efficiency of system electrical energy to magnetic energy, the RLC series resonant circuit is chosen in the circuit of output magnetic field. Measurement and control system using DSP microcomputer measurement and control technology and digital PID control method. The frequency and intensity of inductive magnetic field in the air gap changes as the changes of current intensity in coils. The experimental study of rice seeds shows that test result is obviously better than traditional biological magnetization induced breeding technique of fixed magnetic poles.
Sensitive Determination of Bioactive Crocin Analogues in Gardenia jasminoides Ellis Using SPE Prior to HPLC Analysis
Authors: Zhang Xiao Ling , Yu Hui Juan
Published: March 2013

In this study, the feasibility of single-walled carbon nanotubes (SWCNTs) as solid-phase extraction (SPE) adsorbent for the determination of bioactive crocin analogues in the traditional Chinese Medicine (TCM) of Gardenia Jasminoides Ellis prior to HPLC analysis was studied. Various experimental factors influencing SPE efficiency and HPLC conditions were studied. By using SWCNTs as the SPE adsorbent, the detection limit of 1.19-2.21 fmol (at S/N of 3) were achieved with the preconcentration efficiency of more than 120-folds, indicating this proposed method was very practical for increasing the sensitivity prior to HPLC analysis, and it may provides useful clue for the efficient extraction for the bioactive compounds in TCMs.
SpO2 Detecting Applied on Android Platform
Authors: Hu Zhong Shun , Li Shu Yu , Li De Yu
Published: March 2013

In this paper, we put forward a design of oxygenation sensor module, along with a software application development running on Android operation system to combine the sensor module with the Android terminal. A practicable system for blood oxygen monitoring is developed. This system contains two major parts. The first part is the design of oxygenation sensor module. Algorithms about dark current removing and pulse frequency extraction are discussed. Moreover, module calibration is conducted, which is then used to compare the precision of linear and quadratic equations for SpO2 computation. The second part is about the oxygenation monitoring software design and development based on Android platform. The general protocol Blood Condition Index (BCI) transport protocol in hospital monitor is studied and applied. Test results demonstrate the effectiveness of using SpO2 sensor module for blood oxygen measurement. Since ASubscript textSubscript textndroid has a high penetration in our daily life, this work will provide a useful tool for convenient and low cost daily monitoring of SpO2 at home.
Diagnosis of Oil Spills in Penglai 19-3 Using MODIS Imagery
Authors: Yang Hong , Hang Jun
Published: March 2013

To diagnose and analyze the Penglai 19-3 oil spill incident which occurred in Bohai Sea on 4 June, 2011, MODIS 1B images was used in this article. And histogram equalization enhancement was processed on the image after ratio operation between oil-water sensitive channel bands to emphasize the difference between film and background water’s spectral reflectance, and strengthen the oil spills boundary. And last, we use threshold determination method based on image segmentation, combined with the spectrum characteristic of crude oil, to extract oil spills information from the suspected oil films area. Putting together, we locate the oil spills and estimate the area and quantity of oil films.
Using Modified Normalized Spectral Mixture Analysis to Acquire Sub-Pixel Land Cover in a Coastal City
Authors: Deng Lei , Zhao Xiao Feng , Wang Hui Na
Published: March 2013

Spectral mixture analysis has been widely used in quantifying and monitoring urban land surface composition. Most previous research chose inland cities on flat plains as study areas, masking water before unmixing to acquire acceptable results. As an important type with distinct characteristics, coastal cities should be considered separately. This study took Xiamen as an example of mountainous coastal cities and compared four methods of unmixing using Landsat TM images, before assessing their accuracy through the visual interpretation of a SPOT 5 image. The results show that, for mountainous coastal cities, (1) NSMA (Modified normalized spectral mixture) will lead to spectral confusion between water and impervious surface; (2) Modified NSMA without masking water will lead to spectral confusion between dark mountainous vegetation and impervious surface; (3) Modified NSMA with masking both water and mountainous vegetation achieves better results; and (4) pure pixels of impervious surface and soil chosen from high-resolution images and V through PPI achieve the most accurate unmixing results.
An Industry Temperature Measurement Zigbee Node Design
Authors: She Chun Dong , Hu Si Quan , Yao Hui
Published: March 2013

Industry temperature measurement plays an important role in both light industries and heavy industries. This paper presents our design of an industry temperature measurement node based on a thermocouple sensor and Zigbee. The cold-junction compensation circuit and signal gain circuit were implemented in the sensor modulation board. A firmware was developed on CC2530 to control the sensor reading and packets sending. A heating and cooling experiment was carried out. The results show that our design can successfully measure the temperature in industry applications and transfer it wirelessly via Zigbee communication.
Identification of Freshwater Fish Meat Freshness Based on Multi-Sensor Fusion Technology
Authors: Yang Xiao Jing , Yan Zheng Hu
Published: March 2013

In order to explore the application of multi-sensor fusion technology in nondestructive testing of agricultural products and develop new detection methods for agriculture, multi-sensor information fusion technology are performed to identify freshness of freshwater fish meat. Different freshness of grass carp specimens were identified by multi-sensor fusion method which three characteristic data that are PH value, conductance and smell were measured, collected, and then fused by fuzzy theory method. During the experiment process the value of the total volatile basic nitrogen (TVB-N) of standard samples and test samples were measured. The freshness standard was established by the TVB-N value of standard samples. Correctness of the results of multi-sensor data fusion was verified by comparing the TVB-N value of the test samples with the freshness standard. The results show that the freshwater fish meat with different freshness can be identified correctly by multi-sensor data fusion method which is fuzzy theory and the accuracy rate is 94%.
Application of Capacitive Sensor in Measurement of Material Transportation
Authors: Xiao Zhi Hong
Published: March 2013

A detection system of capacitive sensor is designed and the application of capacitive sensor in measurement of material transportation is discussed. On the basis of measuring the dielectric constant change of the material in conveyor, the system can detect density variation of the material. The signal conditioning circuit of measurement system consists of capacity/voltage conversion circuit, phase shifter and programmable gain amplifier etc. It can reduce the influence of cable’s distributed capacitance and other parasitic capacitance. The results show that the system has high measurement precision of the relative value, and better anti-interference ability.
Design of Mobile Meteorological Monitor Based on Wireless Sensor Network
Authors: Xiu De Bin , Sun Qi , Ge Chun Zhi , Luo Yi , Du Yuan Ting , Wang Ya Dong , Shi Yun Bo
Published: March 2013

In order to monitor meteorological parameters such as temperature, humidity, pressure, wind speed and wind direction, a meteorological monitor system of wireless sensor networks was analyzed, which was based on the combination of Zigbee and GPRS communication technology. Short-distance data transmission was achieved through sensors local-area network completed by Zigbee technology, and long-distance data communication was achieved through GPRS technology. Terminal devices distributed in environment collected real-time data gained by sensors, and sent the data to the base station via Zigbee communication technology. The data was received and processed by Mobile base station and base stations choose to use GPRS or Ethernet technology access to Internet and transferred data to the monitoring center. Experimental results show that: temperature accuracy can reach 0.2°C, humidity accuracy can achieve 3.0%RH, and the pressure accuracy is up to 1.5mbar. The Meteorological data is real-time transmitted and the system solves the problem of data loss.
Remainder Reliability and Robust Estimation for Surveying Networks when Two Gross Errors Included in the Observations
Authors: Guo Sen
Published: March 2013

Robust estimation methods can efficiently eliminate or weaken the effects of gross errors on parameter estimation when such errors exist in observations. Remainder reliability can essentially show whether gross errors may be eliminated or weakened by robust estimation. Taking 8 leveling networks and 4 trilateration networks with different remainder reliability adjustments as examples, simulation experiments are used to compare 4 frequently used robust estimation methods. The results indicate that when observations simultaneously contain two gross errors and if the remainder reliability RR20.45, all the four robust estimation methods may effectively eliminate or weaken these effects.
Dim Moving Target’s Detection Based on Keystone Transform
Authors: Guo Yun Fei , Feng Ting Ting , Liu Xin , Fan Kong Shuai
Published: March 2013

For the problem of weak target’s detection under lower signal noise ratio in radar detection system, a key technique is to enhance target echo energy by long time coherent integration. During the integration period, the target may migrate across radar range cells with integration time increasing. Direct coherent integration will lead to echo energy spread in range cells and deteriorate integration effect. A coherent integration algorithm based on a modified keystone transform is proposed in this paper. It can correct range migration caused by the radial velocity of the moving target before coherent integration. Simulation result shows that the proposed algorithm can correct range migration efficiently and improve coherent integration capability.
Meter Data Management System with Multi-Channel Power Supply and Matrix Electrical Measurements
Authors: Hsu Chin Shun , Lee Chao Yang , Hsu Feng Sheng , Yang Chu Sing
Published: March 2013

Today, due to the increase in smart grid and DC appliances implement the use of renewable energy, the power consumption of equipment and appliances can be monitored by smart outlet or smart meter. However, if every devices are installed a meter will be very expensive and lack of flexibility. This work proposes a combination of multi-channel power supply and matrix measurement of electrical meter data management system to increase system built facilitate and promote greater consumption analysis flexibility and benefits. The proposed method includes a programmable logic controller (PLC)based Multi-channel power supply switch circuit (MPSC), measurement control circuit and Zigbee intelligent socket (Smart Outlet) for collecting and controlling the power flow with wireless communication. Three types of wireless metering methods are used to compare cost and metering error rate. The experimental results reveal this work can be an efficient and low-cost metering solution.
The Remote Control a Tele-Robot 5R by Using Dual-Tone Modulation
Authors: Aghili Hamed
Published: March 2013

This paper proposes replacement of a tele-controller system to base on DTMF in spite of tele-system web. It is found that telesystem with Dual Tone Multiple Frequency has a large capability in send-receiving of data in hardware and software. It dos not need to install of a PC for receiving and processing of data as tone modulated form from slave side. In other hand, its adaptive ability with different phone lines and no any need to spare devices of network such as net card or modem and no contribution from local networks of internet and finally different master interfacing capabilities with a single slave are examples of the advantages of the system. Also, synchronous using of internet lines like ADSL in other applications such as video image sending (due to system development) is one of the other advantages of it. This paper describes several interface system and control system with experimentally tests according to the ISO9283 standard and Delay-Time in this the Tele-Robot.
Virtual Prototype Modeling of Biped Robot with Heterogeneous Legs
Authors: Xie Hua Long , Li Fei , Weng Ning , Sheng Zhong Qi
Published: March 2013

Biped robot with heterogeneous legs (BRHL) can simulate amputees dressed with intelligent above/knee (A/K) prosthesis and can be used to evaluate intelligent prosthesis (IP) performance. First the concept of virtual prototype technology and BRHL is introduced. Then virtual prototypes of BRHL mechanical system, ground environment, perception and control system are established. In the end, the continuously walking simulation of BRHL based on virtual prototype is done. The research indicates that virtual prototype modeling based on Pro/E, ADAMS and MATLAB/Simulink is feasible.
Electro-Hydrostatic Actuator Modeling
Authors: Song Yu , Habibi S.R.
Published: March 2013

This paper demonstrates the modeling of an Electro-Hydrostatic Actuator prototype. The mathematical derivation of the physical model is reported.Parametric model was obtained through system identification.
Design of a Single-Plate Electrowetting-on-Dielectric Device
Authors: Chen Tao , Pan Ming Qiang , Wang Yang Jun , Liu Ji Zhu , Chen Li Guo , Sun Li Ning
Published: March 2013

Due to its simple structure, low consumption of energy but strong driving forces, Electrowetting on Dielectric (EWOD) is used most frequently in digital microfluidics for manipulation and control of droplets. In this paper, the internal mechanism of EWOD is explained though establishing the geometric model of unipolar board structure digital microfluidic chip. The digital simulation software COMSOL Multiphysics is applied to analyze the coupling fields. The results show that external flow velocity of micro-droplet is greater than the internal velocity. Based on the theoretic analysis, surface micromachining technologies are employed to fabricate the single-plate EWOD chip. Finally, an experiment platform is set up to test this chip. Experimental results show that 2μL droplet can be driven in velocity of 10cm/s and two droplets can be merged successfully. It will possibly provide an effective solution to the manipulation of droplets.
Modeling of Stresses and Temperature in Turning Using Finite Element Method
Authors: Sangwan Kuldip Singh , Kant Girish , Deshpande Aditya , Sharma Pankaj
Published: March 2013

This paper focuses on finite element modeling of orthogonal cutting process of AISI 1045 steel using Modified Johnson Cook (MJC) as constitutive material flow model under various machining parameters. Finite element solutions of cutting forces, effective stresses and temperature are obtained for a wide range of cutting speeds and feeds. The effect of feed and cutting speed on cutting forces, effective stresses and temperature has been studied over a wide range of values. Percentage variation of each is also studied to predict co-relation with the different machining parameters.
Multi-Application and Large Shared Memory in a Mechatronic System for Massive Computation
Authors: Kim Hyung Tae , Jin Kyung Chan
Published: March 2013

Recent mechatronic systems, such as inspection machines or 3D imaging apparatuses, acquire and compute massive data for final results. A host in the mechatronic system is commonly composed of multiple hardware devices which interface with high-speed external signals. The host and the devices usually have large memory, so efficient data management is important due to data storage and transfer. In our software structure, each device is managed by respective application and large shared memory (LSM) is allocated in the host for the massive data. The shared memory is accessible from the device applications. Actions of the mechatronic system are driven by combining and broadcasting events through and inter-process communication (IPC). The model with LSM and IPC was applied to a 3D RF imaging system. We expect the proposed model can also be applied to machine vision with big image and engineering simulation with hardware accelerators.
Numerical Study of the Single-Phase and Two-Phase Flow in a Centrifugal Pump
Authors: Ba Te , Lim Arthur Teck Bin , Kang Chang Wei
Published: March 2013

The paper presents the numerical investigation of a radial flow centrifugal pump with 2D curvature blade geometry. The geometry is based on the experimental equipment by Anagostopulos. Single phase (water) flow is modeled with a normal mass flow rate and rotation speed. Pressure distribution and fluid streamlines are evaluated and visualized. An extension of the model to transient flow and two-phase flow simulation has been done to see the effect of impeller rotation and gas entrainment in the centrifugal operation procedure.
Quasi-Static Analysis on a Large-Sized Four Contact-Point Slewing Bearing with Negative Axial Play
Authors: Wang Yan Shuang , Wu Yan , Zhu Hai Feng
Published: March 2013

A quasi-static analysis of a large-sized four contact-point slewing bearing with negative axial play is performed. The values of normal contact loads of a slewing ring bearing between balls and inner/outer ring were computed at different negative axial plays without applied load. The results show that the normal loads of the four contact points increase as the absolute value of negative axial play increases. Slightly changing negative axial play makes big change on normal contact load. Startup friction torque can be improved largely by increasing slightly the absolute value of negative axial play.
Contact Stress Analysis on a Large-Sized Four Contact-Point Slewing Bearing with Negative Axial Play
Authors: Wang Yan Shuang , Zhu Hai Feng
Published: March 2013

The analysis method on contact stresses between balls and inner/outer ring raceways of a large-sized four contact-point slewing bearing with negative axial play was present. The contact stresses and contact areas between balls and inner/outer ring raceways of a slewing bearing were computed at different negative axial plays without applied load. The results show that a ball contacts with inner/outer ring raceways at four points whose contact areas and contact stress distribution are approximately same. The contact stresses between balls and inner ring raceway are slightly higher than those at outer ring raceway. Contact stress and contact area increase with absolute value of negative axial play increasing. Startup friction torque can be improved by increasing the absolute value of negative axial play.
The Strength Analysis on the Gear Ring of Ladle Turret of the Continuous Caster
Authors: Hu Da Chao , Qu Zhi Hao
Published: March 2013

The strength question of a key component- the big gear ring, which locate on the equipment of ladle rotating turret in a steel plant is discussed in the text . In order to attain work load acted on the big gear ring, the mathematics exploring technology and the electric measurement are used. Lastly, a strength evaluation of the big gear ring was obtained by the theory of the finite element analysis.
A New Method of Track Approaching Based on Sectioned Polynomial for Crankshaft Tangential Point Tracing Grinding
Authors: Li Jing , Shen Nan Yan , Wang Xin Ling
Published: March 2013

The motion path of grinding carriage about workpiece rotation angle in crankshaft tangential point tracing grinding is a complex curve. For such complicated movement curve, it’s necessary to find a proper path approximation method to meet the high requirement of speed and precision of path interpolation. Sectioned polynomial is effective to approach to complicated path which ensures the approximation precision with low-order polynomial. This paper presents a dynamic sectioned cubic polynomial approximation method based on approximation error which ensures the continuity of the neighboring sectioned cubic polynomial curves at their boundary points to realize the stable tangential point tracing grinding of crankshaft at high speed.
Measuring the Gravitational Acceleration by Hydrostatics
Authors: Zong Bao Chun , Nie Chuan Hui
Published: March 2013

According to the physical principles of hydrostatics, we measure the gravitational acceleration by using the air specific heat ratio comprehensive instrument and an inverted test tube with a pressure sensor at the bottom of it. The experiment is simple and does not involve the measurement of time. The result is good.
A Study on Modal Parameters of Cylindrical Grinding Machine Structure through Experimental Test and FEM
Authors: Barzegar Ramin , Mahboubkhah Mehran , Ettefagh Mir Mohammad
Published: March 2013

Machine tool vibrations have great impact on machining process. Dynamic parameters such as the modal frequencies and damping constant of their components are the essential technical information required in engineering analysis and design. In addition, this information is needed for numerical simulations and finite element modeling to predict the response of the structures to a variety of dynamic loadings. In this work, experimental modal testing of a cylindrical grinding machine has been performed to obtain the mode shapes and modal frequencies. A Fast Fourier Transform (FFT) Analyzer, Pulse lab shop was used to obtain the Frequency Response Functions (FRF) and subsequent extraction of modal data was performed using Me’scope modal analysis software. These modal parameters were then checked using finite element analysis software, Ansys which were found to comply with the experimental results
A Fault Diagnosis of Suck Rod Pumping System Based on SVM
Authors: Wu Wei , Zhou Yu , Wei Hang Xin
Published: March 2013

Aiming at the defects of fault diagnosis in the traditional method for sucker rod pump system, a new method based on support vector machine (SVM) pump fault diagnosis is proposed. Through studying the theory of invariant moment and the shape characteristics of pump indicator diagram, seven invariant moments is extracted from the indicator diagram as a pumping unit well condition of the characteristic parameters. Then these parameters are pretreatment, and it makes up seven eigenvector which are regarded as the input eigenvector of the SVM. The experiment indicates that the method can not only detect the fault of the pumping oil well but also can recognize the fault type of it, which is very effective for safety protection and fault diagnosis of the pumping oil.
Active Synthesis of Discrete Systems as a Tool for Stabilisation Vibration
Authors: Dzitkowski Tomasz , Dymarek Andrzej
Published: March 2013

The paper presents the problem of stability and vibration reduction in designed discrete mechanical systems. The method of stabilisation and reduction has been based on active synthesis, which makes it possible to obtain the desired mechanical effect through the proper selection of dynamic properties of the system, including the calculation of the active force as a function of the system force feedback.
Wear and Transmission Error between PEEK Bush and 7075 Aluminium Alloy Cam Plate Components in Robot Joints
Authors: Koike Hitonobu , Kanemasu Kenji , Itakura K. , Saruwatari Kenichi , Rozwadowska Justyna , Uryu Megumi , Santos Edson Costa , Kida Katsuyuki
Published: March 2013

In this work, wear of reinforced poly-ether-ether-ketone (PEEK containing PTFE, graphite and carbon fibres) polymer bushes in friction against 7075 aluminium alloy cam plates is investigated in order to establish the application possibilities in transmission parts in humanoid robot joints. The PEEK bush surface conditions as well as the input axis-output axis transmission error (backlash) require close examination. Sliding wear tests were performed on bushes under 900 kgfcm loaded torque, while the cam plate oscillated. Based on the wear observation, it was found that PEEK wear fragments in the interface between PEEK bush and aluminium alloy cam plate formed a PEEK film.
Fault Diagnosis of Tolerance Analog Circuit Based on Wavelet Neural Network with PSO Algorithm
Authors: Cong Wei , Jing Bo , Yu Hong Kun
Published: March 2013

For the Difficulties in fault diagnosis of tolerance analog circuit, a Wavelet Neural Network (WNN) diagnosis method based on Particle Swarm Optimization (PSO) algorithm is proposed. To overcome the deficiencies of the traditional BP algorithm using in WNN, PSO algorithm is introduced into the parameters optimization in WNN, and the velocity disturbance operator is embedded to ensure the particle out of the premature position for PSO algorithm performance. The simulation results show that the proposed method has the fast training rate, accurate diagnosis, without local convergence.
Phase Unwrapping Method Based on Windowed Fourier Transform
Authors: He Yan Bin , Li Xin Zhong , Chen Wei Min , Wen Jun Song
Published: March 2013

Phase unwrapping is one of the key technologies in electronic speckle pattern interferometry. A new phase unwrapping algorithm, based on windowed Fourier transform is proposed. The high noisy phase map is denoised by the window Fourier transform approach and then is uwrapped by the discrete cosine transform. The method is tested in this paper using a circumferentially fixed circular plate with a point load at the centre and compared with not denoised wrapped phase map and unwrapped phase map. The result shows the new proposed phase unwrapping method in denoising and improving image quality has obvious superiority.
Surface Profile Observation of PTFE Radial Bearings under Rolling-Contact-Fatigue in Water
Authors: Oyama Shunsuke , Kida Katsuyuki , Santos Edson Costa , Koike Hitonobu , Kashima Yuji
Published: March 2013

Groove shape effect on wear behavior in PTFE radial bearings under rolling contact fatigue (RCF) was investigated. RCF tests in water-lubricated conditions were carried out at different loads and rotation speeds. The groove surfaces after testing were observed by using a laser confocal microscope and a two-dimensional shape measurement sensor. It was found that PTFE bearings under RCF generate wear debris, however no cracking or flaking failure could be observed. It is concluded that groove deformation depend on load rather than rotation speed. The biggest changes in groove profiles occurred when tested at loads close to 400N.
The Effect of the Fermi Energy on the I-V and G-V Characteristics of Molecular Wire
Authors: Boudjella Aissa
Published: March 2013

The effect of the Fermi level position Ef on the electron transport of different molecular assembly system (MAS) conformations is investigated. The model contains up to six 1,4-dithiolbenzene (DTB) molecular under fixed intermolecular distance d=3.9 Å. The simulation results show that with Ef near the HOMO-LUMO mid gap, the curves show only 3 modes of operation: 1) the conductance gap region (CG); 2) the linear region; and 3) the saturation region. More than 3 different regions of operation were observed when Ef becomes close to LUMO. The threshold voltage Vth, the conductance gap and VIP decrease, while the conductance peak increases. More importantly, in addition to the effect of physical parameter N, which involves the -orbital interactions, enhancing the -orbital interactions strength by reducing HLG, the Fermi level position is another important factor in determining the current flow.
Reduced Vth Temperature Dependence in Bi-Dithiolbenzene in Parallel Arrangement-Impact of the Intermolecular Spacing
Authors: Boudjella Aissa
Published: March 2013

Numerical simulations have been performed to study the effect of the temperature T on the electronic transport through a small group of molecular assembly system (MAS) by presenting I-V and G-V characteristics analysis for different geometry structures. The model involves 1,4-dithiolbenzene (DTB) (HSC6H4SH) molecules stacked in one dimension (1D). The MAS contains two DTB molecules packed in parallel geometrical arrangement. The relationship between the threshold voltage Vth and d the intermolecular spacing (which involves the -orbital interactions) is investigated when T ranges from 50 to 325 K. At fixed temperature, the system in the regime of stronger -interactions obtained with close DTB molecular unit (d=3.3Å), reduces Vth. Vth decreases approximately by 2.2 V when d changes from 3.3 to 6.9 Å. The temperature rise effect is another important factor that could reduce Vth . When T increases from 50 to 325 K, Vth decreases linearly, approximately by 1.2 V. More importantly, our simulation results correspond to L. Cai et al’s experimental results[24], the threshold voltage for switching molecular wire decreases as the temperature increases.
Computer Simulation and Modelling of Standing Wave Ultrasonic Motor Using a Single Flexural Vibration Transducer
Authors: Shafik Mahmoud , Wilmshurst Tim , Fekkai S.
Published: March 2013

This paper presents a standing wave rotary piezoelectric ultrasonic using a single flexural vibration transducer. The motor consists of three main parts, stator, rotor and housing unit. The stator is a single piezoceramic flexural vibration transducer. The rotor is made up of the motor driving wheel and the shaft. A computer simulation and modelling using finite element analysis for the proposed motor is discussed and used in the motor design development process. Finite element analysis has been used to evaluate the motor structure by performing an algebraic solution of a set of equations, describing an ideal model structure, with a finite number of variables. The established simulation and modelling for ultrasonic motor using finite element analysis enabled to select, the material of the flexural transducer, defining the operating parameters for the motor, determining the principles of motion and proposing an innovative technique to control the direction of motion, by controlling the phase between the two modes of vibrations. This enabled to create two directions of motion from a single vibration bar. A prototype of the proposed motor was fabricated and its characteristics measured. This showed that operating parameters of the fabricated prototype are: frequency equal to 40.7 KHz, voltage: 50: 100 volt and current: 50: 100 m-amperes. This is showed a close agreement with FEA. Typical output of the prototype is no-load speed of 120 rpm, a resolution on the order of micrometers and a dynamic response <100 µsec. The motor is able to carry a load equal to 2.8 Newton.
Study on the Tensile Mechanical Properties of Sympodial Bamboo Single Root
Authors: Hui Shang , Zhang Yun Wei
Published: March 2013

Bamboo plays an important role as a kind of vegetation with contribution to soil and water conservation, Mechanics property of roots play a crucial role in mechanics of soil-reinforcement. In order to find the tension properties of the bamboo roots underground, the tensile experiment for the roots of four kinds of sympodial bamboo, Bambusa distegia, Dendrocalamopsis oldhami, Dendrocalamus giganteus and Chimonocalamus dumosus, was implemented in the field. The experiment employed our own portable experimental equipment for testing tensile characteristics of root. Tensile force and strain rate of roots with different diameters was tested for these four kinds of bamboo. Then, their tensile strength and elastic modulus were obtained through calculation. The experimental results show that the tensile force of sympodial bamboo root increases regularly by the power function regular the increase of the root diameter, and the tensile strength of root reduces along with the increase of root diameter by the power function. The average anti-tension of these four bamboo roots is Bambusa distegia (59.47N), Chimonocalamus dumosus(58.65N), Dendrocalamus giganteus(43.51N) and Dendrocalamopsis oldhami(40.8N), and their average tensile strength is Dendrocalamus giganteus(30.24Mpa), Bambusa distegia(23.14MPa), Dendrocalamopsis oldhami(22.83MPa) and Chimonocalamus dumosus(18.14MPa). The ultimate strain has limitation from 14% to 18%. The average elastic modulus is Dendrocalamus giganteus(169.86MPa), Bambusa distegia(166.37MPa), Dendrocalamopsis oldhami(158.36Mpa) and Chimonocalamus dumosus(135.56MPa). Compared to the four kinds of bamboo, Dendrocalamus giganteus root has the best comprehensive tensile properties. Next are Bambusa Distegia root, Dendrocalamopsis oldhami root, and Chimonocalamus dumosus root respectively. Compared with the common of Pinus tabulaeformis, Betula platyphylla, Larix gmelinii,clumping bamboo roots have better tensile mechanical properties.
Solving Stereo Warehouse Storage Location Assignment Problem Based on Genetic Algorithm
Authors: Jin Meng , Mu Xi Hui , Li Liang Chun , Du Feng Po
Published: March 2013

Class-based stereo warehouse storage policy distributes products among a number of classes and for each class it reserves a region within the storage area. In this paper, a genetic algorithm method of using the intersectant operation of chromosome repair and mutation operation of two-way movement detection is developed to solve an integer programming model for storage assignment. Computational experience on randomly generated data sets and an industrial case shows that improved genetic algorithm gives superior results than the genetic algorithm without improving for storage location assignment with ordering restriction.
Predictive - Reactive Strategy for Real Time Scheduling of Manufacturing Systems
Authors: Kalinowski Krzysztof , Krenczyk Damian , Grabowik Cezary
Published: March 2013

In this paper a solution of soft real time scheduling in manufacturing systems is presented. The basic requirements of scheduling as a real time system are discussed. The proposed rescheduling method uses predictive-reactive strategy and multi thread searching approach with rule-based heuristics, meta-heuristics and random modules.
Research on Enterprise Security Management Mode Based on Animation Technology
Authors: Mei Fu Ding , Hou Jiao Jiao , Mei Zhi Heng
Published: March 2013

In view of the disadvantages of traditional enterprise security management and the advantages of animation system such as vivid imagined and well-accepted，the author in this article studies enterprise security management model based on the system，including the following five aspects：Representation of the safe production scene in enterprise；Simulation of the accident process；Simulation of the emergency rescue；Education and training programs of safety knowledge and the simulation of product safe performance. Animation technology will bring a new thought to enterprise security management. It will not only help enterprises to solve many security problems，but also take great significant changes in safety production and safety education.
On China's Current Obstacles in the Development Process of Green Buildings
Authors: Sun Wang Hu
Published: March 2013

This article proposes the major issues of our country’s current green building development, that is lacking the social basis, weak policy implementation, the dependence on high technology, complex system structure, shifting of the responsibility of resources crisis, or being unworthy of the name; high economic cost, lacking of market acceptance; ignoring the people-oriented, the lack of characteristic content. Only properly having solved these issues, can we eliminate obstacles to the development of green building.
A Research on the Transmission and Variation of Tales to Build Korean Yadam Computer Aided Digital Archive
Authors: Choi Woon Ho , Kim Dong Keon
Published: March 2013

In this paper, the transmission and variation of tales between Yadamjip's was investigated. Yadamjip is a collection of Yadam, which is a tale of unofficial histories. The data was compiled from 12 books of Yadamjip and the number of tales used in this research is 2,144. The pairwise comparison of 2,144 tales to each other was committed and the transmission and variation of Yadamjip is inferred by computational clustering and text mining methods from the similarity of tales in each Yadamjip. Among the 12 Yadamjip's., it is revealed that there are three major categories of Yadamjip only with respect to the transmission relation. Especially, GIMUN (NL), GIMUM (YS), HAEDONG, CHEONGGU, DONGPAE, GYESEO were revealed to share various tales with trivial or minor variation.
Study on Countermeasures of Coal Gangue Pollution Prevention and Regional Sustainable Development in China
Authors: Liu Yan Guang , Yu Li Nan , Wang Han Chen
Published: March 2013

Coal gangue governance easing orefield ecological environment destruction pressure, promote the economic development, and promote the regional sustainable development. This paper first analyzes the effect of coal gangue accumulation on sustainable development of orefield, the influence of coal gangue accumulation that seriously prevent the regional sustainable development. Then based on environment benefit, economic benefit and social benefit of coal gangue governance, the thesis elaborates on coal gangue management of mining the strategic significance of sustainable development. Finally, to promote regional economic sustainable development of coal gangue treatment ways are discussed in terms of management, economy and technology.
Ecological Conception and Level Analysis in Planning and Design
Authors: Sun Ke Zhen
Published: March 2013

Ecological system theory in landscape architecture planning and design are discussed in this paper. The article studies the composition of urban, landscape and building ecosystem, integrated ecology and design, integrated uses in urban and landscape areas, the method of interdisciplinary working. System theory is involved in this paper to discuss relevant problems. In addition to these, the article gives account of ecological engineering in all-around, including ecological denotation and connotation analysis, the wider sense and the narrow sense, the general level and the high level about ecological engineering. This article argues the problem of ecological strategies in the landscape design and planning, and the main contents of ecological strategies. It includes the strategy of landscape sustainable development, which is in conflict with rapid economies and historic preservation, ecological conservation.
Hybrid Controller Design for Two-Floors Structure against Northridge Earthquake
Authors: Tinkir Mustafa , Kalyoncu Mete , Şahin Yusuf
Published: March 2013

In this study, an adaptive neural network based fuzzy logic controller (ANNFLC) and a PI (Proportional and Integral) controller are used together as hybrid controller for deflection control of two degree of freedom building-like structure system against scaled Northridge Earthquake experimentally. Proposed structure consist of two floors with a shake table and a cart which is mounted on the second floor as active mass damping (AMD) and controlled by hybrid controller. Training and testing data of ANNFLC are determined by using behaviour of PI controlled system against Northridge. Thus, ANNFLC is created and it's control performance is combined with PI controller's effect to achieve small deflection responses of the floors. Obtained hybrid controlled results are compared with passive and PI controlled results and presented in the form of graphics.
Master/Slave Robotic System for Teaching Motion-Force Manufacturing Tasks
Authors: Portillo-Vélez Rogelio de J. , Cruz-Villar Carlos A. , Rodríguez-Ángeles Alejandro , Arteaga-Pérez Marco A.
Published: March 2013

This paper proposes a bilateral master-slave training systems which allows to directly transfer motion and force skills from the human operator to a real slave manipulator trough a master robot. For this, real and virtual surfaces are modeled by geometric constraints, which represent the surface where the task is to be performed. Thus, joint orthogonal decomposition into force and motion is considered. The holonomic constraint model and the joint orthogonal decomposition allow a stability analysis of the whole system, such that convergence properties in motion and force spaces are obtained. The effectiveness of our proposal is experimentally shown.
Analytical Target Cascading Method on Braking System Characteristics Optimization
Authors: Guan Hsin , Hao Wei Tuo , Zhan Jun , Li Xin
Published: March 2013

Because of the Limitations and shortcomings of the traditional multi-disciplinary optimization methods, this paper presents a useful optimal method named Analytical Target Cascading (ATC) for braking system characteristics optimization. The deceleration and pedal sense are chosen as the design targets. Brake system is divided into 4 subsystems: pedal, vacuum booster, master cylinder, brake. The optimization results show that ATC has a high degree of accuracy.
An Automatic Aeroponics Growth System for Bamboo Seedling and Root Observation
Authors: Liu Jing , Zhang Yun Wei
Published: March 2013

According to the biological characteristics of bamboo seedling, an automatic aeroponics growth system is developed for bamboo seedling and root observation, which can prepare good condition of water-fertilizer, air and warm during bamboo seedling. The ultrasonic atomizer is used to atomize the nutrient solution to the ultrafine particles of 1-5 microns diameter. Compared with traditional piezometrical atomization, this method can not only improve atomization efficiency of nutrient solution to promote uniform absorption at the roots, but also avoid the phenomenon of root-washing. In addition, considering the significant effect of temperature and humidity on bamboo root growth, a temperature-humidity control system is designed for automatic control of water-fertilizer and temperature in bamboo root growth environment. The system supplies an experimental platform with features of simple structure and convenient control. In the procedure of bamboo seedling, bamboo rhizome and shoot can grow fast because of enough moisture nutrition, good breathing, and low growth resistance. Furthermore, it is also convenient for morphologic observation of bamboo roots.
Conformal Cooling of the Injection Moulds
Authors: Bĕhálek Luboš , Dobránsky Jozef
Published: March 2013

Paper deals with the diagnosis of operating conditions for injection moulding tools. Paper specifically deals with the conformal cooling of injection moulds for its production is using the direct metal laser sintering method. It´s quite modern method about injection mould cooling system design to improve cooling intensity. Paper also deals with the evaluation of the temperature fields in the area of the mould shape parts in comparison with the common cooling system with drilled channels namely at using steel or copper alloys for punch production. Moreover there is also evaluated cooling method influence on properties and also injection part morphological structure by methods of wide angle X-ray scattering and differential scanning calorimetry.
Verification of Machine Position in Production Plant with Use of Virtual Reality Technology
Authors: Novak-Marcincin Jozef , Fečová Veronika , Novakova-Marcincinova Ludmila , Torok Jozef , Barna Jozef
Published: March 2013

The aim of this article was to describe the creation of application for the motion capture technology. The part of this contribution deals with the use of virtual reality technology in the many area of life, but it is focused on the engineering area. The next part describes the used software and magnetic device for this application. The practical parts deals with the creation of this application, it describe this proces and shown the results of this created application and how this application is working in the real time.
Assesment of Material Flow in Foundry Production by Applying Simulation Analysis
Authors: Semanco Pavol , Fedák Marcel
Published: March 2013

In this paper we applied simulation tools to assess the material flow in particular company oriented on die-casting production. The objective of the presented case study is to highlight that detailed data analysis from simulation can help to increase utilization of machinery considerably. Another reason for simulation adoption is to determine deviation of production volume. We have also implicitly outlined the benefits that can be derived from implementing a simulation tools and the additional costs for the implementation.
Operation of Water Jet System in a Sandstone Quarry and its Impact on Production
Authors: Gryc Roman , Hlaváč Libor M. , Mikoláš Milan , Mádr Vilém , Wolf Ivan , Žoček František
Published: March 2013

The experiments with pure water jets were performed both in laboratory and in a quarry. The basic information about water jet system operation in quarry conditions has been acquired and some relations between data from a quarry and the laboratory ones have been determined. The efficiency of the cutting system in quarry conditions is considered and discussed.