bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamical Variation of Weierstrass-Mandelbrot Function in Higher Dimensional Space
Authors: Zhang L. , Liu Shu Tang
Published: December 2013

Many real complex phenomena are related with Weierstrass-Mandelbrot function (WMF). Most researches focus on the systems as parameters fixed, such as calculations of its different fractal dimensions or the statistical characteristics of its generalized form and so on. Moreover, real systems always change according to different environments, so that to study the dynamical behavior of these systems as parameters change is important. However, there is few results about this aim. In this paper, we propose simulated results for the effects of parameters changeably on the graph of WMF in higher dimensional space. In addition, the relationships between the Hurst exponent of WMF and its parameters dynamically in 2-and 3-dimensional spaces are also given.
Cheap Mix Design of the Rock-Filled Concrete Materials
Authors: Wu Qiong , An Xue Hui , Huang Mian Song
Published: December 2013

Rock-filled concrete (RFC) is an innovative dam construction material that has been developed quickly in China since 2003. The concrete is produced by pouring the Self-compacting concrete (SCC) into the voids of large rock chunks, with a minimum size of 300 mm, in a formwork. To date, all the practical applications have shown that using RFC in dam constructions has significant economic and environmental benefits. Total construction cost is reduced due to using large amount of rock chunks, which can amount to roughly 55% of the total volume of RFC. When producing SCC, we make full use of local raw materials (e.g. fly ash, limestone) and optimize mix design based on the simple mini-slump flow tests on pastes to obtain better workability and lower cost. SCC with excellent workability can be obtained even the powder material is limestone powder alone. It is indicated that RFC is a potential and promising material for use in future concrete dams.
Research on Asphalt Mixture Injury Digital Image Based on Enhancement and Segmentation Processing Technology
Authors: Zhang Shu Wen , Zhang Xiao Ning , Wu Zhi Yong , Shi Li Wan
Published: December 2013

In order to visually observe the damage evolution of the asphalt mixture, and analyze the damage evolution accurately and quantitatively, the CT image of asphalt mixture image was processed for image enhancing and segmenting, the entire or partial image features can be effectively improved. The dynamics gray-scale range of the image was adjusted by the histogram equalization and provision. Image gray-scale transformation is enhanced by using Matlab software. At the same time, when the algebraic operations and noise filtering is used to process, the mixture image segmentation and boundary identification are achieved. The results show that the contrast and gray scale dynamic range of the gray scale image can be effectively improved by provision and equalization of histogram. The gap, aggregates and binder can be extracted by segmentation technology from asphalt mixture CT images. The real microstructure obtained can accurately reflect the evolution of asphalt damage.
Stress Analysis and Strength Checking for High Pressure Gas Pipeline in the Earthquake Rupture Area
Authors: He Wei , Liu Yan Dong , Wang Guo Xing
Published: December 2013

Based on the actual project example of high pressure gas pipeline crossing earthquake rupture area, the paper shows and explains the way to make stress analysis and strength checking calculation for the high pressure gas pipeline in the earthquake rupture area by the method of finite element.
Fire Resistance Performance of High-Strength Concrete Columns Reinforced with Pre-Stressed Wire Ropes
Authors: Kim Heung Youl , Kim Hyung Jun , Park Kyung Hoon , Cho Bum Youn , Lee Jae Sung
Published: December 2013

In this study, the fire resistance performance of high-strength concrete columns was evaluated to see the influence of lateral confinement reinforcement with wire ropes for improving ductility, fire resistance reinforcement with fiber cocktail and load ratio. For this, loaded fire test was conducted under ISO834 standard fire condition. The axial ductility of the 60MPa high-strength concrete column reinforced with pre-stressed wire ropes was improved and its fire resistance performance was also improved by 23% compared with its counterpart without wire ropes. The appropriate load for the 60MPa concrete column reinforced with wire ropes was found to be 70% of design load. The fire resistance performance of the 100MPa high-strength concrete column reinforced with pre-stressed wire ropes and fiber-cocktail was improved as much as 4 times compared with that reinforced with tie bars only. The appropriate load for the 100MPa columns was found to be less than 70% of design load in order for the columns to secure required fire resistance performance.
Tunnel Strength and Excavation Effect under Different Stress Paths
Authors: Sui Zhi Li , Li Zhao Guang , Yang Zhi Jun , Shen Ran , Wang Xu Peng , Li Wen Li
Published: December 2013

The stress path division of soil strata surrounding the excavation tunnel was obtained by numerical simulation, and based on this, the impact variation of different stress paths to the surrounding soil strength was gotten by laboratory triaxial test. The results show that tunnel excavation can result in four different stress path divisions of the soil strata, which have deferent failure to the tunnel stability. Deferent paths have respective failure forms, and the failure strengths are basically the same when the forms are identical (extrusion failure or compression failure) even if the paths are different, but to deferent forms, the failure strength are deferent, generally speaking, the strength of extrusion failure will be 10% ~25% lower than that of compression failure. These researches can provide strong basis for accurately study about the influence of engineering property of environmental soil strata.
Review on Aquifer Structure Theory in Aquifer Layered Distribution Area
Authors: Yuan Hua
Published: December 2013

In the nature, most phreatic or confined aquifers are of layered distribution. Based on the actual distribution of aquifer and whether there exists transfluence contact between each aquifer, the layered distribution aquifer basically is simplified as multi-aquifer or double aquifer structure. In this paper, all of the aquifer structure models proposed by domestic and foreign scholars are summarized. Furthermore, the mathematical model of each aquifer structure is detailed illustrated.
Research on Measures of Restraining the Vertical Deformation of CRTSII Ballastless Track Slab as Filling Cement Asphalt Mortar
Authors: Guo Jian Guang , Zhang Zhi Chao , Yuan Qiang , Zeng Zhi Ping , Xie Hong
Published: December 2013

CRTS II ballastless track slab tend to generate vertical deformation when filling cement asphalt mortar. The phenomenon mentioned above leads to higher probability of generating joints between track plate and cement asphalt mortar. Based on the finite element theory, a mechanical model that contains track plate, supporting slab, cement emulsified asphalt mortar and withhold device is established. The purpose of such a model is to research the interaction among components as well as simulate the exact CRTSIIballastless track structure. By analyzing the influences of various trackway conditions, cement asphalt mortars filling height and withhold device arrangement on vertical differential deformation of track plate, put forward the measures to restrain the vertical deformation of track plate. The research results provide references for the ongoing ballastless track construction on the Shanghai-Kunming passenger dedicated line.
Seismic Analysis of a Water Release Integrated Structure Part II: Time History Analysis of Service Bridge Pier Structure
Authors: Wang Yong , Xuan Jun Chang , Sun Ming , Dong Bo Ya
Published: December 2013

In this study the three dimensional finite element method is employed to analyze the time history response for the service bridge pier of a water release integrated structure under the minimum operation level and the normal storage water level in maximum design earthquake load condition. The Mexico seismic curve is provided to perform the time history analysis for the present project. The temporal integration of time history analysis is carried out by the Newmark method and the stress, deformation results of the service bridge pier structure is discussed in detail.
Analysis of Stress Deformation Characteristics of Composite Geomembrane Rock-Fill Dam with Core Wall
Authors: Ding Dong Yan , Ren Jian Min
Published: December 2013

The Chengzigou hydropower station of composite geomembrane rockfill dam as an example of the dam body and the composite geotechnical membrane stress and deformation characteristics are used nonlinear elastic model - Duncan EB model establish three-dimensional finite element model of rockfill,by using the large finite element softwareFLAC3D,whice provided geogrid element to simulate lexible geomembrane shear interaction with soil.The stress and deformation of the dam and the composite geomembrane is calculated under two conditionscompletion period and impoundment period.And analyze the change of the stress and strain distribution rule,whice will provide the basis for the design of the geomembrane.
The Investigation of the Hall Loudness Evaluation
Authors: Cai Yang Sheng , Zhang Cheng Yun
Published: December 2013

Loudness is one of the three basic parameters to assess the auditorium sound quality with reverberation time and balance together, it will be discussed in this paper. There are three expressions evaluating the loudness: listening level, the strength index and the mean forte sound pressure level of tutti-sound (LpF). Each of them has their merits and shortcomings. This paper will focus on these three expressions and the feasibility of checking and accepting acoustics of the hall by loudness.
Parametric Study of an Electromagnetic Energy Harvester
Authors: Hassan Mohd Firdaus , Yusoff Ahmad Razlan , Mansor Muhammad Hatifi , Kar Mohd Tarmizy Che
Published: December 2013

This paper presents two important parameters for an electromagnetic energy harvester exploiting various shaker excitation frequencies: (1) number of turns of the coil and (2) length of the beams for the device. This system consists of a cantilever beam based which represent a spring element of the system, permanent NdFeB magnet, coil system and wiring system to be connected to the data acquisition system. It is found that the induced voltage is proportional to the increment of the number of turns and the length of beams. The expected resonance happens at 300 Hz for case (1) and 100 Hz for case (2). The maximum voltage produced by this device is 915.395 millivolts for length 13 cm at 100 Hz excitation and 275.058 millivolts for 1050 turns at 300 Hz excitation. Experimental data have demonstrated that the geometry and number of turns of the coil would affect the performance of the energy harvester while excitation frequency as a non-physical factor also contributes to its effectiveness.
The Effect of Vibration and Vehicle Body Movement of Car Suspension Systems due to Different Damper Characteristics in Cornering Tests
Authors: Nawawi Zulkifli , Ismail Nurazima , Yusoff Ahmad Razlan
Published: December 2013

This paper investigates the effect of vibration and vehicle body movements acting on the vehicles wheel due to the different damping characteristics of suspension systems. Three different damping characteristics damper named Absorber A, Absorber B and Absorber C was installed on the suspension system of the Proton Persona which was used as a test car. This test car was equipped with accelerometers and wire potentiometer sensor on the front and rear suspensions, gyroscopic, Global Positioning System (GPS) and connect with DEWEsoft software as a data acquisition. To study the effect of three different damper characteristics on suspension system, the ride comfort analysis and car body movement analysis were used to analyze the result during experimental testing. There were 3 maneuver testing experiment were performed including steady-state cornering, single-lane change and slalom testing experiment. Based on the results, comparison between the suspension damper characteristics due to the driving maneuvers and car movement were made and their performance also were ranked. Absorber A was the hardest damper as compared to Absorber C and Absorber B according to the damping constant value. The result showed that the best performance for car movement made by Absorber A then followed by Absorber C and Absorber B, while the best performance for ride comfort analysis was made by Absorber B followed by Absorber C and A.
Environmental Noise and Policy Implication in Latvia
Authors: Dundurs Janis , Lacis Miervaldis
Published: December 2013

The European Directive 2002/49/EC on the assessment and management of environmental noise obliges European Union Member states to draw noise maps of communities with more than 100,000 inhabitants (agglomerations) and of areas near the major transport infrastructures for the assessment of noise outdoors. The Latvian law On Pollution and the Cabinet Regulation No 597 Procedures for Noise Assessment and Management (Adopted 13 July 2004) were harmonized with this European Directive to provide the legislative background for the local authorities to draw noise maps to be used as a basis for noise reduction plans. Riga Agglomeration strategic noise map was calculated using software IMMI 6.3. The map shows Riga City as rather noisy city because major roads and railway lines cross the city center and close to it. Riga Freeport, located on the banks of river Daugava, with its supply roads and branch-ways also add to contribute in the total noise levels. The European Directive 2002/49/EC on the assessment and management of environmental noise also obliges European Union Member states to draw Noise reduction Action plans. In Latvia, Capital Riga and Daugavpils are required to have the Action Plans. Action Plans must be completed by 18 July 2008. Much to our regret the Riga City noise reduction Action Plan is still under consideration and in process of development because it touches the interests of many parties.
A Pilot Study on Work-Related Neck-Shoulder Pain among Sewing Machine Operators
Authors: Nawawi R. , Md Deros Baba , Daruis Dian Darina Indah , Ramli A. , Md Zein R.
Published: December 2013

Prevalence of neck-shoulder pain among sewing machine operators is well known. It may be due to the nature and incorrect posture used by sewing machine operators while performing sewing work. However, up till now there is no empirical evidence that can be used to relate the risk factors that would results towards the development of neck and shoulder pain among sewing machine operators. The main objective of this study is to identify and investigate the risk factors that result in neck and shoulder pain among Malaysian sewing machine operators. Twenty female sewing machine operators took part in answering a survey questionnaire to investigate the prevalence of neck and shoulder pain among sewing machine operators. The survey questionnaire was divided into five sections: socio-demographic, work background, workload information, physical exposures and physical musculoskeletal symptoms experienced by workers. Having done that, sewing machine operators who have been screened with neck and/or shoulder pain was evaluated with Rapid Upper Limb Assessment (RULA) to determine the level of workplace risk factors. Subjects without neck and/or shoulder pain were excluded. Results of the study shows that all sewing operators were expose to risk of prolonged sitting, repetitive task and working at high speed. Ninety five percent of sewing machine operators had experienced neck and/or shoulder pain and 80% of them were exposed to high work risk factors that require them to undergo further investigation. Shoulder pain was found to be strongly correlated with high work risk factor among sewing machine operators (p<0.05). In conclusion, occurrence of shoulder pain among sewing operators is due to posture and nature of sewing work.
Damage Identification and Quantification in Structures Using Wavelet Analysis
Authors: Chandra N. Harish , Sekhar A.S.
Published: December 2013

In this study, displacement and strain energy mode shapes obtained from the structure, are processed using continuous spatial wavelet transforms for damage identification. A cantilever and simply supported beam are analysed in ANSYS to obtain mode shapes by performing modal analysis both for damaged and undamaged conditions. Different wavelets are processed to choose the best mother wavelet for detecting crack, a representation of damage. The dimensions of crack like depth are varied from 0.5 mm. Spatial distribution of wavelet coefficients obtained is used for identifying the damage. The quantification of the damage is done by using Lipchitz constant. It is observed that by using strain energy mode shapes the percentage of damage (crack) identification level can be improved than by using displacement mode shapes. The minimum damage level that the strain mode shape can identify is approximately 3% of the element thickness, whereas with displacement mode shapes, it is about 7% of the element thickness. Different types of crack configurations like single surface crack, double surface cracks and internal cracks are simulated and studied using both the modal methods. It is observed that the strain energy mode method could identify internal cracks also.
Spectral Analysis of Cutting Forces Data for XY Table Ballscrew Drive System
Authors: Abdullah L. , Jamaludin Z. , Chiew T.H. , Rafan N.A. , Shaaban A.
Published: December 2013

.The utilization of spectral analysis for the purpose of investigating machining parameters in frequency domain has been widely practiced by group of researchers in engineering field. In this case the machining parameters involved are the cutting force parameter. By adapting spectral analysis to the cutting forces data, the researcher will have the access to identify the specific cutting forces exerted to the surface of the workpiece at each particular frequency under a set of frequency content. This paper is paying attention on the essential aspect on how to analyze the cutting forces data appropriately. It is recommended that those data need to be transformed first from the original form of cutting force data in time domain into the form of cutting force data in frequency domain. The outcome from this paper is in the form of graphical representation of cutting force data in frequency domain. It is obtained by applying Fast Fourier Transform (FFT) technique. To be more clear-cut, the result from this research work shows that the cutting force is directly proportional to the depth of cut and inversely proportional to the spindle speed of the end mill machine. The cutting force data later on will be used as an input disturbance for XY table ball screw drive system during the simulation process in the Matlab simulink diagram.
Analysis of Sound Absorption of Date Palm Fibers Based on Flow Resistivity
Authors: Khidir Elwaleed Awad , Ali Mojahed Osman Mohammed , Ali Mohammed Mustafa , Tahir Mohd Faizal Bin Mat , Zulkifli Rozli
Published: December 2013

This paper presents a study on the sound absorption properties of a single layer date palm fiber based on the flow resistivity. Experimental measurements were carried out to estimate the flow resistivity value using differential pressure tube. The average diameter of the fibers is 0.462 mm. A date palm fiber sample of 25mm thickness is used in this research. The flow resistivity of the date palm fiber sample was found to be 4.26 kPa.s/m2. The flow resistivity was used to calculate the sound absorption coefficient using Delany and Bazley model. The simulation showed that the values of absorption coefficient are small at low frequencies and rising with increasing frequency. To check the effect of flow resistivity on the sound absorption coefficient Delany and Bazley model was simulated for three different flow resistivity values. The simulation results showed that the sound absorption coefficient increases with the increase of the flow resistivity.
Measurement of Vibration Power Flow through Elastomeric Powertrain Mounts in Passenger Car
Authors: Rejab Mohd Noor Arib , Rahman Roslan Abdul , Hamzah Raja Ishak Raja , Hussain Jawaid Iqbal Inayat , Ahmad Nazirah , Ismail Asyraf
Published: December 2013

The effectiveness of vibration isolator or mount can be done by quantifying the vibration energy flow through the isolators. This can provide information on the quantification of the vibration energy flow from the powertrain to the structure or chassis. Vibration energy flow through mount is identified as vibration power flow that is one of vibration transmission paths. This paper presents vibration power flow through four elastomeric mount. The vibration (source and receiver of accelerations) was measured by running engine at constant speed and without load conditions in varying speeds starting from 1050 RPM to 4000 RPM. The vibration was measured only in z-direction (vertical direction). The noise inside compartment was measured at the condition of engine run-up without load condition and was measured starting from 1050 RPM to 4000 RPM engine speed. The results from vibration power flow analysis showed that the main vibration energy transmission was high from front mount and rear mount, around engine speed 3200 RPM, and booming noise occurred around 3200 RPM due to structure-borne noise.
A Parallel Study of Vibration Analysis and Acoustic Analysis in Low Frequency Brake Noise
Authors: Magaswaran K. , Hassan Muhammad Zahir , Phuman Singh A.S.
Published: December 2013

An acoustic analysis in the investigation of brake noise shows the severity of the noise and its characteristics and a vibration analysis shows the excitations of noise that is present in the braking event. In this study, vibration and acoustic analyses were used to study the brake noise which is produced during braking. Vibration and acoustic data were collected simultaneously during braking to identify the braking condition. The data analysis focuses on the low frequency domain. The Fast Fourier method was used to analyse the vibration and acoustic signals. The computation of FFT was done independently and the frequency domains obtained were compared. The parallelism in the analysis was used to identify the acoustic source. The determination of the source will aid in brake noise reduction efforts and reinforce the vibration analysis method as a system identification method for brake noise.
Research on ATS Device Resources Matching Algorithm Based on Minimum Weighted Distance
Authors: Ma Xiong , Xu Ming , Liu Bin
Published: December 2013

Aimed at solving difficulties of managing test routing and matching resource ,this paper brings out an instrument resource matching algorithm based on minimum weighted distance .The algorithm adopts weighted distance to describe similarity between signals , while weight value is determined by experts' experience with consideration of actual condition ,which can describe similarity more reasonable .At the same time the strategy and algorithm of resource matching are given ,serial and parallel testing are optimized with simpler and rapider criterion. Application example tests the method possess better routing management capability ,strengthens system reliability and improves resource matching and routing management efficiency on the basis of testing demand models and instrument resource models.
The Optimizion of the Training Process Based on Adaboost Algorithm
Authors: Shan Lu
Published: December 2013

The research started from the adaboost algorithm, which was optimized from the training process and the detection process, and on this basis face detection and tracking system was developed.Adaboost is a main algorithm in using.It calculate easily and extraction rate rapidly.But it also have some problem to resolve,such as the detection time is too long,the samples number is so limited and so on.This article give some optimizition methods in the training procedure.
The Design and Study of Fractal Graph Based on Visual C++
Authors: Su Jian Xia , Li Gen
Published: December 2013

The effect of fractal theory describes roughness and irregular geometric shapes in the nature or in non-linear system. In recent years fractal theory is extensively applied to many fields, such as mathematics, physics, chemistry, geography, earthquake and astronomy, computer science. In this paper, Visual C++ language is used to simulate fractal trees, snowflakes and cracks because of good use interface and strong computer programming technology. The parameter of the fractal graphics, such as recursive degree, length and rotation angle, can be modified by using the parameter dialogue box in order to obtain various fractal graphs. This paper focuses on the algorithm study of fractal simulation graphs.
A Contra-Intellectual Capital Account: Hidden Costsof Quality and Modified by Fuzzy Set
Authors: Wu Pei Ling , Chen Heng Sheng
Published: December 2013

In this paper, we not only described the face value and the book value but also givean evaluation of the stock value and the market price even developed the estimated method of the intellectual capital and the hidden quality costs, of common stock. A fuzzy set is introduced to construct the fuzzy statistics and to modify the estimated method. To prove that our model can be used in the practical field, The Hurdy Company, a beauty mask products maker, was our case illustration. After the intellectual capital and the hidden costs of quality are considered together, three situations can be found. The intellectual capital is the optimistictraditional intellectual capital.The adjusted and modified intellectual capital is given to the intellectual capital is over the hidden costs of quality and the value is in accord to the diffidence between both.The enterprise will be bankrupt.
Implementation of Smart Home System Based on Internet of Things
Authors: Gao Yan Zeng , Wei Ling Yan
Published: December 2013

Smart home can apply new internet of things concepts along cloud service technologies. This paper introduces a novel method for smart home system building. The system is driven by use case and it is composed of home control center, zigbee end devices, smart phone applications and cloud server. The home control center is based on arm-linux embedded system, it is the relay of cloud server and home devices. Wireless network of smart home devices was designed according to zigbee. A smart phone application was developed as the role of the user interface.
Measurement Device and System for Temperature Regulation Properties Evaluation of Textile Fabrics
Authors: Yao Bao Guo , Wang Jian Chao , Hong Shui Yuan
Published: December 2013

A new measurement system and the testing device was developed to characterize the temperature regulation properties of textile fabrics based on the mechanical device, microelectronics, sensors and control system. A series of indices were defined based on the typical heat flow-time curve and the raw data to characterize the temperature regulation performance of textile fabrics. The measurement principle, the mechanical device and the evaluation method for the temperature regulation properties of textile fabrics were introduced. Twelve types of fabrics made from different textile materials were tested. The one-way ANOVA analysis was conducted to identify the significance of the differences of the indices among the fabrics. The results show that each index is significantly different (P<0.05) among the different sample fabrics.
Current Status and Development Trend of Power Big Data for the Smart Grid
Authors: Yan Ming Liang , Ding Jie
Published: December 2013

Nowadays the concept of Big data has become a hot issue in IT technical development. It combines frontier information techniques with scientific research method, which is also a new research direction. Power big data is an advanced application of that concept, technology and method in electric industry, involving many aspects such as electric production, enterprise operation and management. This paper briefly analyzes the character, research object and method of power big data, discusses some existential questions in research work, finally introduces application prospect of big data technology in the field of power information.
Environment Monitoring System for Precise Agriculture Based on Wireless Sensor Network
Authors: Song Jing Jiang , Zhu Ying Li
Published: December 2013

With the development of agricultural modernization, agricultural environment protection, Wireless Sensor Networks are used in the field of environmental monitoring for modern agriculture, which brings a broad and bright application prospects. The paper presents a real-time monitoring system based ZigBee wireless sensor network and GPRS network. The system gives the hardware design of wireless sensor node and software implementations. The system design provided a guarantee to achieve accurate, remote and real-time monitoring agricultural environmental information.
Research on Simulation of Cartridge Backward Spinning Process
Authors: Zhao Han Dong , Xie Jia Qing , Li Fei
Published: December 2013

The Simufact material forming finite element software is used to simulate the cartridge backward power spinning process, the material strain and materials flow pattern of the cartridge case deformation zone of spinning process are analyzed. We obtained the conclusion that the materials radial pressure is much greater than the axial and tangential stress, and the radial material flow rate is largest, followed by tangential flow rate, axial flow rate is smallest in deformation zone. The results has certain guiding significance in preventing the produce expanding, necking, uplift and other defects, optimize spinning process.
Study on Anti-Freezing Performance of Organic Fluorine Siloxane Nano Coating
Authors: Guan Dong Bo , Cai Zhong Yi , Jiang Yang , Wang Shou Jun , An Hui , Sun Guoen , Qiu Xiao Ming , Yao Wei Guo
Published: December 2013

a low surface energy coating with a long chain fluorine siloxane is prepared, and the performance in anti-freezing adhesive is studied. It is determined that the optimum proportion of (Heptadecafluoro-1,1,2,2-tetradecyl) trimethoxysilane (FAS) and SiO2 nanopowder are 1.1% and 1.6%,respectively. the times of coating bear pendulum impact is least in this proportion. the conclusion is that bionic superhydrophobic coating plays a certain guiding role on solving material surface frozen sticky problem.
Analysis of Transmission Characteristic in Single Polarization Dual Elliptical Assistant Holes Hollow Fiber
Authors: Xu Ding Jie , Song Hong Ru , Wang Wei
Published: December 2013

To improve the propagation quality in photonic crystal fibers,a novel dual elliptical assistant holes hollow fiber is proposed. Numerical model of confinement loss has been modeled by vector finite element method, then the core loss characteristics and the power ratio of the hollow fiber has been simulated and analyzed. The results show that the x-polarization confinement loss and the core power ratio are 0.06dB/m and 98.2% at 1550nm, respectively. By contrast, the y-polarization confinement loss is up to 243.34dB/m while the core power ratio is 47.86%. The novel optical fiber exhibits good single polarization characteristics and transmission characteristics, and the bandwidth range of single mode single polarization is 55nm. The novel optical fiber is very good to satisfy the requirement of single mode single polarization at the 1550nm.
Adaptable Product Platform-Based Product Family Design of Crane
Authors: Cheng Xian Fu , Zhu Qi Hang
Published: December 2013

A new design method for product family was presented based on adaptable product platform. Firstly, customer demands were analyzed for bridge crane. Secondly, axiomatic design was utilized as framework to zigzaging mapping between functional requirements and design parameters, and design matrix was established. Then the sensitivity analysis among design parameters and between design parameters and functional requirements was done. The design relation matrix was established and relation degree among design parameters was calculated. Based on above analysis, the platform parameters were identified.
Reduce the Impact of Dynamic Strength of Concrete under Fire Conditions on Bearing Capacity of Reinforced Concrete Columns
Authors: Tamrazyan Ashot
Published: December 2013

This article provides an example of the calculation of eccentrically compressed reinforced concrete elements operating under dynamic loads and fire effects. Dynamic coefficient depending on temperature and strain rate, the results of experiment varies widely from 0.4 to 0.8. It is possible to reveal the influence of the dynamic effect on the reduction of the bearing capacity of the pylon and fire and columns of 40%.
Analyzing Tree Dynamic Modeling under Outdoors Environment
Authors: Yang Feng , Yu Shun , Li Tie Nan
Published: December 2013

Nowadays, tree modeling is used in various fields of social widely. Existing tree modeling method ignore trees their own feature so that it construct modeling could not express lifelike tree morphology and then depict the effects attitude of wind and rain and other natural factors in nature. This paper discusses tree dynamic modeling to express the tree multicolored under the wind or rainfall area. Using the theorem of momentum to calculate the instantaneous momentum, and compared to rupture limit, and then depict the state of tree break or mutual extrusion.
Modeling and Simulation of Passive Dynamic Harmonic Filter Based on IGBT
Authors: Li Juan , Chen Jing , Deng Yi , Li Jing
Published: December 2013

The objective of this work is to simulate a kind of passive harmonic filter based on IGBT to improve the power factor of the power supply system, then to verify the feasibility of reactive power compensation and harmonic suppression. According to the topological structure and working principle of passive dynamic harmonic filter based on IGBT, the simulation model of the system has been set by the Simulink tool. Simulation results show that the passive dynamic harmonic filter based on IGBT can compensate the corresponding reactive power and suppress harmonic in the power grid. The research of this paper has laid a theoretical foundation for this filter in industrial applications.
Research and Design of Panoramic Parking System Based on DaVinci Technology
Authors: Jiang Li Biao , Chen Ze Mao , Wu Yong Qi
Published: December 2013

Panoramic parking assistant system demands for the high performance of hardware when capturing, storing, processing image and demands for capturing from four video sources. This paper analyzes the microprocessor TM320DM642 and TM320DM6467(DM642 and DM6467 for short), both of which are based on the DaVinci technology, and presents two solutions for four video capturing and processing, as DM642+TVP5150 and DM6467+TVP5158. Hardware platform based on DM642 has been established and tested. High resolution panoramic video of bird's-eye view is rendered smoothly on the platform. The result shows that microprocessor of DaVinci technology has excellent performance for the panoramic parking assistant system, and DM642 microprocessor meets the hardware demands of the panoramic parking assistant system.
Iterative Solution of Nonlinear Dynamical System of an Electrostatically Actuated Micro-Cantilever
Authors: Lan Qiang , Zhang Jie , Liu Qi Xin , Chen Yan Mao
Published: December 2013

This paper presents an iterative method to solve the nonlinear dynamical system ofan electrostatically actuated micro-cantilever in MEMS. Different from someother iteration methods for nonlinear dynamical systems, no additionalprocedures have to be carried out to eliminate the so-called secular terms. Inaddition, an efficient approach is proposed to expand fractional functions intotruncated Fourier series. That makes it possible to implement the iterativeprocedures. Importantly, all the iteration equations are purely linear. Numericalexamples show that the solutions provided by the method are in excellentagreement with numerical ones. The effects of applied voltage, cubic nonlinearstiffness and squeeze film damping on vibration responses are discussed indetails.
High Power Ytterbium-Doped Fiber Super-Fluorescent Sources
Authors: Lan Lan Ling , Liu Yan , Chang Xue Rong , Huang Yao , Zhang Ji Sheng , Zeng Shu Guang , Tan Xin Yu , Li Jing
Published: December 2013

The output characteristics of high power ytterbium-doped fiber super-fluorescent sources were analyzed. 75.7W output power can be achieved when the 915nm pump power is 100W, and the fiber length is 10m.when the pump power changes from 20 to 100W, the backward super-fluorescent power is always larger than the forward. The mean wavelength of the forward and backward super-fluorescent is very stable. The spectrum width all decrease. The spectrum width of forward ASE changes from 24.8nm to 21.4nm when the pump power changes from 20 to 100W. The spectrum width of backward ASE changes from 25.5nm to 22.3nm.
Study on the Optimal Layout of Distributed Generations
Authors: Liu Zhi Yu , Yang Zhong Li , Pan Ai Peng
Published: December 2013

Distributed Generation (DG) plays a more and more important role in the power system.When it is in the grid-connected mode,it has a great influence for security and stability of power systems.In order to determine the best position of DG when it is grid-connected,firstly,analyze the the steady of the system to define the candidates of DGs that will be grid-connected,then select some operation indicators to assess the power system using Interval Analytic Hierarchy Process (IAHP),finally decide the best position of DG. Modeling and simulation work are carried out in BPA,and the detailed steps of decision-making are given. The results show that the location of DG determined by this method of the paper can guarantee the security and stability of power systems and make grid in the optimal operation.
Human Error Classification and Control of Production System
Authors: Hu Xiang Hong , Li Xiao Bing
Published: December 2013

Human error controllability is analyzed based on the classic classification method of the human error in this paper. The paper also gives the comprehensive evaluation index for controllability of controllable human error. With evaluation index, Human Error control activities can be effectively guided in the production system. At last, taken the assembling process of the automobile gearbox for example, a case study is conducted. Example proves that this method can provide decision support objectively and accurately for human error control.
Analysis on CM+Partnering Composition Pattern of Engineering Project Management
Authors: Chen Yan , An Hai Ning
Published: December 2013

In recent years, CM mode and Partnering mode, as two crucial project management modes, have been widely applied to the construction industry in the developed countries. However, domestic research on these new modes is still at the starting stage, lagging far behind the international advanced level. On the basis of an in-depth analysis on the concepts and features of the above two modes, this essay puts forward a new kind of project management composition pattern--CM+Partnering, aiming at drawing on each others comparative advantages. It highlights the superiority of the CM+Partnering pattern through comparing it with traditional modes. Finally it discusses the feasibility of its application in the project management with the aid of a case study. Keywords: engineering project management, At Risk CM, Partnering pattern, composition pattern
Measurement Method for Bank Liquidity Risk Based on EGARCH-VaR
Authors: Wang Liang , Huang Chong Zhen , Wu Qiong
Published: December 2013

EGARCH-VaR model is established for measure the liquidity risk. Meanwhile, liquidity gap is selected as the measurement index. It is tested that logarithmic difference time series of the bank liquidity gap have the characteristics of peak and fat tail distribution and high-order ARCH effect. By using the maximum likelihood estimation method for EGARCH model’s perturbation parameter estimation, the value of VaR is calculated and tested. Comparing with GARCH model, EGARCH-VaR model is more accurate and efficient.
Camera Calibration Method Based on Circle Plane Board
Authors: Li Wen Guo , Duan Shao Jun
Published: December 2013

We present a camera calibration method based on circle plane board. The centres of circles on plane are regarded as the characteristic points, which are used to implement camera calibration. The proposed calibration is more accurate than many previous calibration algorithm because of the merit of the coordinate of circle centre being obtained from thousand of of edge pionts of ellipse, which is very reliable to image noise caused by edge extraction algorithm. Experiments shows the proposed algorithm can obtain high precise inner parameters, and lens distortion parameters.
The Monitoring Software Design of Performance Test-Bed of Heat Pump Unit
Authors: Feng Jian Wen , Wang Li Peng
Published: December 2013

Performance test-bed of heat pump unit in central air-conditioner needs the intelligent and multifunctional software. So the monitoring software is designed with a good human-machine interactive interface, based on Visual C# development platform. The software can dynamically configure channels and measurement points to improve the defects of fixed channels for all measuring points in the traditional monitoring systems, which enhanced the flexibility and reliability of system. In order to increase the data accuracy, the improved digital filter algorithm was adopted. In addition, multi-threading mechanism was used to achieve serial communication and data processing, which meets the requirements of monitoring program for multi-tasking and real-time. The results show that monitoring software is powerful, easy to operate, reliable, high fault-tolerant and good user-friendly. It is suitable for using in other monitoring systems.
Research on Multi-Channels Data Selector of Telemetry Data of BMK
Authors: Zhou Qiang , Si Feng Wei
Published: December 2013

To meet the requirement of testing project which multiple sets of devices need to be tested in one temperature test, a kind of data selector has been designed. The data selector can be controlled in computer-programs method or in manual method. It is composed of FPGA module, channel gating controller module, data receiving module, data retransmission module, indicator light module and power supply module. As the core of this testing device is designed as FPGA, its flexibility and simplicity has been enhanced. At the same time, the delay time of each channel can be set so that the precision in the transfer process has been improved accordingly. The stability and practicability have been validated through rigorous self-checking test and continuous-testing experiment. Using this data selector in engineering project can save the cost of hardware greatly, shorten the test time and improve the efficiency.
The Research of a Critical Threshold Denoising Method and its Parameters Selection
Authors: Xiao Qian , Jiang Yan Hui , Wang Bin , Liu Mei Jia , Song Mei Xia
Published: December 2013

For soft threshold function are likely to cause a constant deviation with the original signal, hard threshold function can not fully remove noise and the selection of semi threshold function parameters is complex, we presented a critical threshold function, and analyzed the parameter selection for the new threshold. The simulation experiments prove that the denoising of critical threshold method is much better, and it also can make up for the deficiencies of traditional threshold.
A New 3D Coordinates Acquisition Method on Base of Single Camera
Authors: Fan Sheng Hong , Liu Chang Ru , Qi Xiao Tong , Jiang Lai Wei , Wu Ya Jun
Published: December 2013

As is known to us, conventional photogrammetry uses the double phase stereopair for forward intersection, but this paper proposed a new method for 3D coordinates acquisition based on single camera. Under the defined relationship of the object relative position, three-dimensional coordinates can be obtained by space resection through single photo. The principle of this method is simple but practical, especially suitable for measuring the overall mobile objects. Experiments show that within1500mm, plane normal direction is better than 0.02°in the measurement accuracy , and can replace stereopair measurement in certain conditions for its higher measurement accuracy.
Method for Testability Demonstration Test Based on Cost Optimization
Authors: Deng Lu , Xu Ai Qiang , Wu Zhong De
Published: December 2013

Aiming at the problem that uncertainty risk loss is lacking of considering in testability demonstration test, a method for testability demonstration test based on cost optimization is proposed. In the method cost of fault injection, risk cost of producer and consumer is synthetically considered, and a model based on test cost is established. On the basis of binomial distribution theory, the calculation method of producers risk and consumers risk is provided, and the variation tendency of producers risk and consumers risk changing along with the test plan is analyzed. On this basis, optimization solving method of test cost model is presented under the principle of minimize the posterior expected cost. At last, an example is given to show the validity of the proposed method.
Study of English Pronunciation Quality Evaluation System with Tone and Emotion Analysis Capabilities
Authors: Li Xin Guang , Li Su Mei , Jiang Li Rui , Zhang Sheng Bin
Published: December 2013

During the study of English sentence pronunciation evaluation system, we found that sentence pronunciation emotion and intonation evaluation are very important. Probabilistic neural network has been used to study English sentence pronunciation emotion, and DTW (Dynamic Time Warping) algorithm has been used in the intonation analysis. The probability neural network basic principle is introduced in this paper. An emotion recognition algorithm based on MFCC（Mel　Frequency　Cepstrum　Coefficient）is present. The keynote and energy of the sentences are used to analyse the accuracy of the tones.　The experimental results of the proposed method effectiveness are given.
The Smarandachely Adjacent Vertex Distinguishing E-Total Coloring of some Join Graphs
Authors: Li Mu Chun , Wang Shuang Li , Wang Li Li
Published: December 2013

Using the analysis method and the function of constructing the Smarandachely adjacent vertex distinguishing E-total coloring function, the Smarandachely adjacent vertex distinguishing E-total coloring of join graphs are mainly discussed, and the Smarandachely adjacent vertex distinguishing E-total chromatic number of join graph are obtained. The Smarandachely adjacent vertex distinguishing E-total coloring conjecture is further validated.
An Efficient Imaging Strategy for Single Pixel Camera
Authors: Li Chuan Rong , Wang Qi
Published: December 2013

Single pixel camera is a new imaging device that develops from the ghost imaging and compressive sensing theory. For high resolution remote sensing imaging with large amount of data, the process of measurement and reconstruction is time-consuming, which limits its application to remote sensing area. Based on the analysis of the configuration of the single pixel camera, an efficient imaging strategy through combining different numbers of micro mirrors was proposed. Simulation experiment was carried out for the scene consisting of a ship in the ocean. Three types of images, in low, middle and high resolution, are constructed respectively by the control of DMD working area and the strategy to combining DMD mirrors. The reconstructed images reached the application requirements at very low measurement and reconstruction time cost. The effectiveness and practicality of this strategy could be applied to other compressive sensing imaging devices.