Proceedings of the 2016 4th International Conference on Machinery, Materials and Information Technology Applications
(PAPER WITHDRAWN) An Improvement for BigMC
Bigraph which proposed by Robin Milner is a powerful formalized modeling language. We can get the bigraphical reactive systems (BRS) by using bigraph to represent each state in a system. Model checking is the technology which can verify whether a given model stratifies the specified requirement and it's...
Personalized Recommendation of Classification based on Social Relationship and Time Information
Mengzi Tang, Li Li
Improving recommender performance is beneficial. However, sparsity and scalability of data is a problem faced by recent recommender systems. Customer interests and available products are changing constantly. Social interactions among users are highly influential on the effectiveness of the recommendation....
Detecting Social Topic by Hashtag-Weighted Topic Model over Time
Jie Qiu, Li Li
Nowadays, more and more social media platforms support hashtags to facilitate information classification. Like Twitter hashtags, a user-initiated hashtag can suggest emotion/mood, convey so much extra information in addition to the actual tweet. Hashtags have been widely used in topic analysis because...
A Modified Method for Acoustic Pulse Extraction under Noisy Environments
Menghua Cao, Zhiqiang Sun, Erling Gong, Hongwei Xie
This paper addresses a modified method of extracting acoustic pulse based on the multi-band spectral subtraction and the frequency band variance. In this method, the acoustic pulse is detected, the noise spectrum is estimated and subtracted from the acoustic pulse spectrum. By abandoning the late reverberation...
Predictive control of networked control systems based on event-triggered
Wangzhi Wen, Zhongmeng Xiao
A novel structure of networked control systems which incorporates output feedback predictive control and event-triggered communication scheme in a unified model based on the networked control system with packet loss is proposed in this paper. The load of communication channel is relieved by event-triggered...
Study on the queuing system for services being processed parallel by multi-servers
Guang Wang, Qiaozheng Ma, Xiangjun Li
In view of the fact that a server can provide parallel service for multiple customers in the practical application at the same time, the corresponding queuing models are constructed, and the system running indexes are inferred accordingly such as the steady-state probability, average queue length, average...
Single Image Deformable Surface 3D Recovery by Linear Programming
We present a method for 3D shape reconstruction of inextensible deformable surfaces from a single image. The key of our approach is to represent the surface as a 3D triangulated mesh and formulate the reconstruction problem as a sequence of Linear Programming (LP) problems. We use a closed-form method...
Fault diagnosis of rotor broken bars in induction motor system
Tianqi Lu, Tong Wu, Xue Xiao, Sichen Lu, Jiye Yang, Dongxue Li, Zhuoran Song
The comparison of the induction motor rotor common fault simulation, the fault characteristics are obtained this kind of failure of the motor through theoretical derivation and simulation model is established in the fault condition of the motor based on the multi loop theory, the running state of a motor...
The improved particle swarm breaker fault status parameter optimization of SVM classification
In order to improve the mechanical structure of the type of fault resolution precision high voltage circuit breaker spring mechanism, the paper analyzes the characteristics of the circuit breaker and the combination of mechanical vibration signal PSO algorithm (PSO) SVM parameter optimization method...
Implementation of the Teaching Experiment system based on Unity3d engine
Guang Hong, Fu-ping Deng, Dong-yu Zhang, Chao Fen
Aiming at the shortage of the actual experimental equipment, virtual reality technology was adopted for setting up an experiment system. The framework is the strange IoC and the engine is Unity3D for the system. A step operation of the experiment is divided into five parts, interaction behavior, interaction...
Research on quick dam parameter inversion tool based on ANSYS software using APDL and improved GA
Futing Sun, Xiuli Zhang
Dam parameter inversion tool based on ANSYS software and improved Genetic Algorithm is researched. Firstly, traditional GA is improved by introducing power function to rebuilt fitness function; Secondly, quick dam parameter inversion tool based on improved GA is programmed on ANSYS software; Finally,...
Fast MIMO-ISAR Back Projection Algorithm Based on FFT
Xiuyou Wang, Hao Wang, Dongqing Xu, Huaming Liu, Jianzhong Fan
In order to reduce the computational cost in the current MIMO-ISAR back projection imaging algorithm, a fast algorithm based on FFT is proposed for MIMO-ISAR back projection. First, we establish the reflected wave signal model for MIMO-ISAR imaging. The approximate representation of linear change of...
Design of Electric Power Data Management System Based on Hadoop
Yongheng Li, Yongzhi Wang, Liang Jin
With the development of smart grid, electric power system data surges in a short period of time, and the traditional data storage and processing platform can't meet the requirements. In this paper, big data-related technology will be applied to the electric power data management, using Hadoop as a basic...
A new site location approach based on Filtering and Clustering for car sharing system
Yang Yu, Juanjuan Zhang, Jinglin Li
Car sharing service provides people with a new environmentally friendly way to travel. In car sharing system, one of the major challenges is how to determine the location of the car sharing sites. However, the existing method does not take into account people's demand in reality to select the car sharing...
Algorithm of Keywords Extraction about Power Documents Based on Hadoop
Tong Wang, Yongzhi Wang, Liang Jin, Yongheng Li
As the power big data is developing with a wide range of varieties, it is used to manage and analyze data, especially the unstructured data such as power documents. In this paper, HBase database and HDFS are applied to make the document searching easier and faster. Keywords extraction based on Hadoop...
Research on motion sensing interaction technology based on HTC Vive
Fu-ping Deng, Guang Hong, Shuai Zhang, Bing Zhai
The motion sensing interactive devices can greatly enhance the sense of immersion. In this paper, the flow of the interaction with the HTC Vive is sums up five step. Analyzes the positioning principle of the HTC Lighthouse and introduce the function of the HTC thumbstick. Then defines the quaternion,...
Hand Gesture Recognition Using Deep Neural Network and Its Implementation in Augmented Reality
Huayong Yang, Xiaoli Lin
In this paper, we study the augmented reality and its application in intelligent human-computer interaction. The complex structure in the visual background is a major challenge for gesture segmentation. First, we use a robust skin color segmentation method to preprocess the input image. Second, visual...
Finding the shortest path under polygonal obstacle constraints
Xu Yan, Dawei Liu
This paper discusses the problem of road network navigation under polygonal obstacle constraints from an implementation perspective. It implements the problem provided by the 4th ACM SIGSPATIAL GIS Cup 2015 challenge. In the context, it briefly examines some fundamental graph search algorithms and then...
The Exploration and Practice of MVVM Pattern on Android Platform
Wei Sun, Haohui Chen, Wen Yu
How UI designers and business engineers collaborate to development apps on Android platform conveniently and effectively is a difficult problem to tackle when projects get more complicate and need more effort. This paper compared the commonality and variability of MVVM with the commonly used MVC and...
Choosing Peers, Improve the Quality of Peer Assessment
Jinshuang Li, Xiaohan Fu, Qiuwei Yang
Peer assessment has got a lot of attention because it serves as a useful tool for scaling the grading of open-ended works. But it does not always produce accurate results because of two important reasons: students' ability and students' attitude. Based on students' peer grades and the evaluation attitude...
GPU Accelerated Level Set Non-Homogenous Image Segmentation Solving by Lattice Boltzmann Method
Qinyong Zeng, Dengwei Wang, Kaiyu Qin
A novel hybrid fitting energy based active contours model in the level set framework is proposed. The method fuses the local image fitting term and the global image fitting term to drive the contour evolution. Our model can efficiently segment the images with intensity inhomogeneity no matter where the...
Dark Background Image-denosing Based on KPCA Method
Yiran Xiao, Xiaolin Tian
In this paper, a dark background image-denosing method based on KPCA is discussed. First of all, the analysis of KPCA features is used to extract features from the training samples, and then discards the features which had small variance to form the feature space. Second, for reducing the noise, the...
Data Fitting-based SNR estimation algorithm for the Adaptive Transmission
Zezhou Sun, Chenghua Wang, Xiaofei Zhang
Adaptive transmission system selects the suitable transmission rate on the basis of the current channel state. In this paper, we exploit the signal to noise ration (SNR) as a benchmark of standard to measure the channel state. We employ data fitting (DF) to estimate SNR, which is a key technology of...
Interception of the near space hypersonic weapons based on the partial integrated guidance and control method
Bin Fu, Hang Guo, Jie Yan
The interception of the hypersonic weapons in near space is the main problem considered in this paper. The designed interceptor is assumed to have much lower speed than its target and very limited maneuverability in the near space atmosphere. To deal with this problem, a two-loop Partial Integrated Guidance...
Alarm Correlation Research and Implementation Based on Similar Data Sources
Yi Tang, Dahai Jin
In the modern society, static defect detection technology become an effective way to build reliable software. But the phenomena of misinformation and failing to report in the result of static defect detection makes testers needed to confirm the false alarms one by one manually. It is necessary to improve...
Water Tunnel Experimental Research on Vortex of Delta Wing
Song Li, Wei He, Kai Luo, Limin Song, Yuankai Li, Jicheng Zhang
Flight or maneuvering at high angle of attack is one of the most important parts for the modern fighters. When the angle of attack is within the usual range, the aerodynamic characteristics have a linear relationship with the dynamic of aircraft. With the increase of angle of attack, the airflow separation...
Research on Structural Random Response Based on C Type Gram-Charlier
Xiaokai Wang, Tao Zhang
The main research content is a quantitative description of the structural uncertainty problem (Quantification Uncertainty) based on the finite element theory. For the first time, reduction integration method is used to decompose multi-dimensional random response function, the multi-dimensional function...
Research and Practice of Security Technology in Computer Network
The arrival of the information age has gradually expanded the practical application of computer networks, provided more convenience for people's lives, and promoted the rapid development of Chinese information industry. In this situation, the process of using computer network has gradually produced network...
Construction Mechanics and Time-Varying Mechanics in Civil Engineering Analysis
With the development of city construction, civil engineering construction scale becomes bigger, safety problems is gradually serious. This paper introduces the main contents of construction mechanics and time-varying mechanics in civil engineering. We hope to analysis the safety problems in civil engineering...
Technical Framework Research on Critical Information Infrastructure Cybersecurity Classified Protection
Weihong Ren, Jing Yuan, Lei Jiang, Tai Zhao
The technical framework of critical information infrastructure cybersecurity classified protection in this paper is established from the three levels of decision-making, managers and executives which ensures the information security technical framework of an organization is consistent with its strategic...
Research on Comprehensive Evaluation of Freeway Traffic Safety in Heilongjiang Province
Jia Liu, Weiwei Yan
Through the statistic analysis of the accident data of Heilongjiang freeway from 2010 to 2014, it is concluded the regularities of distribution of the accidents on the Heilongjiang freeway, as well as the factors influencing the security of Heilongjiang freeway system. Then, the evaluation index of Heilongjiang...
Research on Communication Networks Effectiveness Evaluation Based on AHP and Fuzzy Clustering
Communication networks effectiveness evaluation directly determined whether the communication networks system is successful. This paper investigated the communication networks effectiveness evaluation based on Analytic hierarchy process and fuzzy clustering method. Indicators of communication networks...
Exploration on the Management Method of Low Frequency Load Shedding in Regional Power Grid
Guowei Ren, Rui Ren
Based on low frequency load-shedding practice experiments of Xinyang power supply company, work principles as 'three reports, one examination and a table modification' is proposed to improve the management of power grid in substitute district. The methods introduced in the paper is proved to be effective...
Intensive Traffic Resource Scheduling based on Map/Reduce in Multi-domain Optical Networks
Li Du, Xue Sun
In the intelligent optical networks, there are two key problems in the long-distance and high-speed intensive service transmission. First one, the sharing scheduling problem of the optical networks resources, namely the privacy problem. Second problem, users of network services require high-quality,...
Development of Modern Technology in Electronic Engineering
The rapid development of science and technology provides reliable protection for the expansion of electronic engineering applications, and gradually improves the production efficiency of related industries. With the influence of this situation, in order to meet the people's demand for electronic engineering,...
Study on the Characteristics of Low-speed Boundary Layer Flow Separation
Peng He, Lei Li, Zhongyin Chen, Man Li
The boundary layer theory is proposed by German scientist Prandtl. When the fluid motion in the large Reynolds number, a thin layer will be concentration to produce in the fluid surface. Because the thin area is very close to the object surface in which the viscous force plays an important role, which...
Calculation and Data Processing Method for Aircraft Maneuvering Performance
Limin Song, Xiujuan Liu, Wenbi Cao, Song Li, Lei Yuan
The quality of flight performance directly determines the execution of flight tasks. For the establishment of a simple and effective methods and calculation of maneuver performance, a lot of work were completed. By the principle, method and steps of calculation maneuvering the aircraft flight performance...
Synthsis and Photophysical Properties of a copper (I) complex emitting material containing 1-(9H-fluoren-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline ligand
Cheng Yi, Shaobo Liu, Feng Zhao
A new copper(I) complex, [Cu( Flu-imPhen)(POP)]PF6, where -Flu-imPhen = 1-(9H-fluoren-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline , POP=bis(2-diphenylphosphanyl)ether, was synthesized and characterized. The corresponding photophysical properties were investigated using UV-vis and emission spectrometry....
Design of adventure game based on Sanxingdui culture elements
Jianhao Yu, Yinfang Zhang
Traditionally, Chinese traditional culture elements always exert an effect on development of modern Chinese game thanks to its rich visual models and profound intrinsic implication. Sanxingdui culture, with its inheritance, individuality and mystique, has unique culture connotation. The paper used Sanxingdui...
Design and Implementation of an Android EPUB3.0 eBook Learning System
Mao Chen, Miao Dai, Hang Luo, Xiaozhen Zou, Sanya Liu
With the rapid development of mobile Internet technologies, mobile learning has become a new way of learning, which is playing an increasingly important role in classroom teaching and autonomous inquiry learning. EBook realizes the perfect combination of traditional learning resources and mobile learning,...
New Periodic Wave Solutions for MNW Hierarchy with the Aid of Computerized Symbolic Computation
Sheng Zhang, Luyao Zhang
Computer has received more and more applications in various fields. In this paper, many new periodic wave solutions expressed by Jacobi elliptic functions of the Mikhauilov-Novikov- Wang (MNW) hierarchy are obtained by using the extended F-expansion method. In the limit cases, the obtained Jacobi elliptic...
A New Variable-Coefficient AKNS Hierarchy and its Exact Solutions via Inverse Scattering transform
Sheng Zhang, Xudong Gao
In this paper, a new variable-coefficient AKNS (vcAKNS) hierarchy is derived from the associated with linear spectral problem and its time evolution equation. The derived vcAKNS hierarchy is a solvable mixed hierarchy which contains isospectral nonlinear partial differential equations (PDEs) and nonisospectral...
Effect of Maturation Time of Coagulum of Fresh Natural Rubber Latex on Oxidation Kinetics of Natural Rubber
Bei-long Zhang, Hong-hai Huang, Yong-zhou Wang, Li Ding, Ping-yue Wang
The oxidation kinetics of natural rubbers prepared by coagulum of fresh natural latex coagulated with formic acid or microorganisms were studied. The maturation time of coagulum is 6, 12, 18 and 24 hours respectively. The results show that the oxidation activation energies of natural rubbers prepared...
A method to improve the annotation mechanism based on Readium
Mao Chen, Hang Luo, Tengbaao He, Sanya Liu
With the rapid development of information technology, great changes have taken place in people's reading habits, and paper books are being replaced by eBooks. Digital annotation tool allows readers to highlight or insert notes into eBooks during the process of reading, which is an important way for readers...
Modified stochastic gradient estimation algorithms for Box-Jenkins model based on auxiliary model
An auxiliary model based stochastic gradient estimation algorithm in proposed in this paper. The unknown variables in the information vector can be estimated by using the auxiliary model. Then the unknown parameters can be estimated by the stochastic gradient algorithm. Furthermore, in order to increase...
Research on Dynamic Gesture Recognition Algorithm Based on Multi-touch Human-computer Interaction Devices in Classroom Teaching
Zhao Zhang, Xiuling He, Zengzhao Chen, Ke Wu
In this paper, we propose a dynamic gesture recognition approach based on multi-touch devices. This method contains three stages: dynamic gesture stroke collection, gesture feature extraction, gesture analysis and recognition. In order to recognize nine kinds of gestures in classroom interaction process,...
Building Integrated Lightning Protection Technology and System Design
This project is a residential area, the project is composed of two towers and commercial podium, is a collection of commercial, office in a body's comprehensive construction, where two towers total height 46.8m. The project according to a class of building lightning protection grounding design, roof...
A kind of Prefetching Data Way to Hadoop MapReduce Environments
Hui Xia, Peng Wu
In MapReduce environment, problem of data redundancy,a large number of tasks to be processing and mass data storage come up, in order to solve these problems, we put forward the way of data prefetching , preprocessing of hid the remote data access latency, by adjusting the allocation of resources to...
Application of Swarm Intelligent Algorithm Optimization Neural Network in Network Security
A network traffic detection model based on swarm intelligent optimization neural network algorithm is proposed in this paper. QAPSO algorithm is used to optimize the basis function center and base function width of RBF neural network,and the connection weights of the output layer and the hidden layer...
A Constraint-Based Approach to Web Service Simulation
Hui Zhou, Han Wu
Web services have been widely used in complex software systems. To guarantee software quality, many researchers have been devoted to the testing of web services. Traditional web service testing approaches mainly focus on the automation of testing process, test case generation etc. However, the web service...
No-Reference Image Mosaicing Method Based on the Generalized Evidence Theory
Yi She, Junjie Wu, Xin Chen, Guoqing Ding, Lihua Lei, Xiaoyu Cai, Jiasi Wei
No-reference image quality assessment is the future research direction in the field of image evaluation. A new no-reference image quality assessment based on the generalized evidence theory was proposed in this paper in order to deal with the measuring problem of the large scale samples under the optical...
Different Terms Fluctuations of Solar Power System
Yindong Liu, Changchun Hu, Miao Miao, Fei Peng
The generation of solar power are known to be seriously influenced by many factors, such as temperature, humidity, et al. These factors cause the fluctuations of solar power system. This paper considers those fluctuations of different terms by using actual historical data and the different distribution...
Research on the Fine-grained Plant Image Classification
Zhifeng Hu, Yin Zhang, Liang Tan
The similarity between different subcategories and scarce training data due to the difficulties of Fine-grained recognition. Even in the same subcategories, there can be some differences due to the distinct color and pose of objects. We propose some models for fine-grained plant recognition by taking...
Feature Extraction of Ground-Glass Opacity Nodules using Active Contour Model for Lung Cancer Detection
Yanli Miao, Jianming Wang, Weiwei Du, Yanhe Ma, Hong Zhang
The proportion of the solid part portion in a GGO nodule is one of features to detect lung cancer. It is difficult to segment the solid part in a GGO nodule completely because tissues surrounding GGO nodules include some impurities like noises in image processing technology. This paper proposes Active...
On the Existence and Uniqueness of the Formal Solution to a Singular Partial Differential Equation
Pingli Li, Sihui Li
According to the theory used in researching certain type of doubly singular differential equations, by computing directly, we find out that a singular partial differential equation in two complex variables has a unique formal power series solution which is in a special form and whose coefficients can...
Security Analysis of Two Inter-Organization Cryptographic Schemes
Fanyu Kong, Jia Yu, Dashui Zhou, Yali Jiang, Jianwei Shang
Data sharing among organizations is a practical application problem. In 2015, T. Miyamoto, Y. Murakami and M. Kasahara proposed two inter-organization cryptographic schemes for secure communication among organizations. Firstly, we give a security analysis of their RSA-based inter-organization cryptographic...
Research on Multi-attribute Vertical Handoff Algorithm Based on Motion Trend Quantification in Internet of Vehicle
Mingji Yang, Ye Wu, Rong Cui
Flow Simulation Based Energy Efficient Clustering in Wireless Sensor Network
The paper introduces a flow simulation based clustering algorithm for wireless sensor network. The algorithm is fully decentralized. The proposed algorithm is inspired by simulating flow in the network. The algorithm clusters the nodes that are at distance of at most k hops from the cluster head while...
The Modified digital channelization method
Chun Hua Yang
The digital channel receiver must have the ability of processing large number of data,A improved digital channel arithmetic is proposed, This algorithm put digital down conversion before decimation and filtering operation .Moreover the algorithm is realized by using FPGA parallel process. The key design...
Capacity and Error Rate Analysis of SIMO Satellite Systems over Ka Band at Venezuelan Amazonian
Gustavo Guedez, Qiang Gao, Mar¡a Guarirapa
Satellite systems progressively operate in higher frequencies, such as the Ka bands. The signals in Ka band system are seriously affected by the environment constraint. A significant percentage of the VENESAT-1 (Venezuelan Satellite) footprint has the coverage service area over the Amazonian. Due to...
SIMO Satellite Communication Systems over Ka Band at Venezuelan Amazonian in Rain Fading Scenarios
Gustavo Guedez, Qiang Gao, Mar¡a Guarirapa
The Amazon has the world's largest tropical forest and about the half of all freshwater in the world. The construction of the wire guided communications systems is denied byinternational environment regulation because the Amazon is a worldwide protected area.Satellite communications systems represents...
Application of Improved Expert Scoring Method with Delphi Principle in CMMI DAR Process Area
Junwei Hou, Xianggu Meng
CMMI (Capability Maturity Model Integration) is the key architecture of software engineering management which divides the whole software development life cycle into twenty-two process areas. DAR (Decision Analysis and Resolution) process area is one of the key process areas, it is executed when we meet...
Calculation and optimization of OSNR based on long-distance OTN network
Yanzhi Sun, Jinsong Hu, Yuming Liu, Zhijun Tian, Huiyi Chai
With the rapid development of national power grid, large-scale electric power communication network is evolving into OTN network in order to back up the power grid management, operation and maintenance of a large number of data communication. Long-distance optical communication is the characteristic...
Analysis on Closed-loop Control System of Class F Gas Turbine
Lei Shi, Xiaomeng Chen
Gas Turbine engine is the most advanced large equipment in the world; the automatic control is a very important matter. The closed-loop is the core of automatic control, and it is also the most complex. Jing Neng Gaoantun gas power plant installed Siemens' SGT5-4000F gas turbine. As a typical model of...
Analysing the Influence of Subsurface Impurity on Laser-induced Damage Threshold of KDP Crystal
Chunyuan Jing, Xiaohong Guo, Tao Zhang, Lizi Chen
The laser-induced damage threshold (LIDT) of KDP crystal affect directly the increase of laser power. In order to research the influence of metal impurities in the subsurface of KDP crystal on LIDT, analyzed the impurities composition and relative content of two kinds of KDP crystal samples by fluorescence...
Using Artificial Bees Colony Algorithm for License Plate Recognition
Weiyu Yu, Dan Hu, Chuyi Li
In this paper, a new vehicle plate recognition method is proposed using the artificial bee colony algorithm. This method can be implemented in entrance admission, security, airport or harbor cargo control, traffic control. Artificial bee colony algorithm was first introduced by Dervis Karaboga in 2005...
Model Optimization of Air Quality with M-ELM
Jianxiong Ye, Wenzhen Zhou, Zhigang Li, Jinlan Zhou
The extreme learning machine (ELM), which was originally proposed for "generalized" single-hidden layer feedforward neural networks (SLFNs), provides efficient unified learning solutions for the applications of clustering, regression, and classification. But when the training data have been contaminated,...
Compressed Sensing to Power Quality Signal with Orthogonal Matching Pursuit Method
Hua Ouyang, Zhonglin Yang, Hui Li
Compressed sensing is a new data compression method which can recover a sparse or compressible signal from a small number of linear and non-adaptive measurements. To solve the problems of high sampling rate and massive data storage faced by traditional collection and compression methods of power quality,...
Exploring Key Technologies of Multi-Sensor Data Fusion
Li Wang, Hongxia Guo
In the mid and late 20th century, with the rapid development of computer technology, control technology, electronic technology and sensor technology, etc., multi-sensor data fusion technology emerged. Data acquired by multi-sensor data fusion technology has multiple levels and grades, which is of more...
The Influence of Odevity of Carrier Ratio on Three-level Rectifier
Pengzhan Wang, Wei Luo, Shasha Yang, Tianzhi Cao, Huawei Li
Neutral point voltage balancing is an inherent problem of three-level rectifier. This paper first analyzed the cause to the neutral point voltage deviation of the DC-side three-level rectifier, and studied the charge and discharge transient processes of the two DC-side capacitors and the harmonic characteristics...
Effect of Relative Permeability on Control Performance of Suspension System
Zhen Jia, Jie Li, Guan Chun Li
In order to study the influence of relative permeability of track material in the performance of EMS suspension control, the Single Magnetic Model is established. Then we acquire good suspension performance by designing proper inner and outer controllers. The effect of the relative permeability on suspension...
Moving Object and Shadow Detection Algorithm Using Lab Color Space
Zhiyong Ju, Xiaolei He, Chaonan Wang
Taking advantage of independence of chromaticity and brightness in Lab space, this paper transplants the idea separating the brightness distortion from the chromaticity distortion mentioned in the Color Algorithm into Lab space, redefine the brightness distortion and chromaticity distortion. Based on...
Study on the Design and Structure of mid-infrared InGaAsSb quantum well laser
Minghui You, Qixiang Sun, Shijun Li, Liping Yin, Xue Li, Jingsheng Liu
2 m InGaAsSb/AlGaAsSb quantum well laser with AlGaAsSb as barrier layer and InGaAsSb as potential well layer. The composition and strain of the material have an important influence on the energy level position and band structure of the quantum well, which affects the performance of the laser. In this...
Study on HCl system wet-etching process of GaSb-based materials
Minghui You, Qixiang Sun, Shijun Li, Liping Yin, Xue Li, Jingsheng Liu
In this paper, GaSb-based material in the near-infrared semiconductor laser has a broad application prospects. For the problems and etching solution suitable particularly critical of etching GaSb-based material. we studied on different etchant experimental analysis the HCl+HNO3(30+1)@T=5 ,37% HCl, HNO3+(0.08MHCl+CH3COOH)...
A New Method of Power Quality Detection on Limited Capacity System
Chuang Lv, Pu Xie
For the operating characteristics of limited capacity micro-grid, power quality disturbance impacting on the micro-grid is to be significantly larger than the civilian power grid, especially the transient power quality disturbances can not be ignored. By combining the advantage of wavelet transform and...
Simulation Analysis of Optimal Excitation Control for Mobile Power Station
Yu-tong Wang, Tian-zhang Shao, Zhi-feng Gu, Hui-tong Gu
Through the modeling and simulating of the synchronous generator, the mechanical and electrical properties of the input load are analyzed. Based on the linear control theory, the optimal excitation control of a mobile station is studied. By comparing the optimal excitation control with the traditional...
Influence of Motor Starting on The Operating Characteristics of Diesel Generator Sets
Guogang Wei, Shiyu Sun, Jinning Liu
In view of the serious impact on the starting process of the motor, the simulation experiment is conducted to study the influence of the diesel generator sets on steady operation.The diesel generator output voltage and frequency waveforms were analyzed by transient adjustment rate and the fluctuation...
Compressed Deep Convolution Neural Network for Face Recognition
Ying Zou, Xiaohong Liu
Deep convolution neural network (CNN) has achieved a great success on face recognition techniques. But most of CNN models tend to be much deeper, which are at the expenses of high consumption of computation and storage. So, it is hard for these deep CNNs applied to mobile equipments because of poor computational...
An Optimized algorithm for device discovery using BLE
Yan Zhang, Zheng Song, Wendong Wang, Ye Tian
There are more and more mobile smart devices with high capabilities in both computing and storage, which leading to the device cooperation in vicinity becomes popular. As the first step in the device cooperation, the device discovery process is particularly important. Because of the mobility of the devices...
Study on Hot Forming Parameters of Torsion Beam Based on Regression Analysis
Fei Xiong, Guiyong Yang, Tao Jiang, Kai Yu
It is found the hot forming quality has close related to the initial temperature of the pressing die, the blank, pressing speed, cooling rate and the friction between the part and tools. Through the design of orthogonal test and multiple regression analysis, the regression model of thinning rate and...
Revolute Joint Motion Control System Design Based on Hydraulic Oscillation Cylinder
Bei Sun, Ying Xu, Lei Hu, Yao Wang
Joint is a core component of space manipulator and the foundation of space manipulator system. Hydraulic manipulator is one of the key points for developing and exploring manipulators in recent years. However, servo control of hydraulic executive components still needs further studies. In this thesis,...
Measurement and Modeling of Aqueous Solutions' Viscosity of Hydrolyzed Acrylic Fiber
Tiangui Wang, Chuang Li
The aim of the study is to determine the dependency of the viscosity of the aqueous solutions of hydrolyzed acrylic fiber on the concentration and temperature. Aqueous solutions of hydrolyzed acrylic fiber were prepared by hydrolysis of the waste fiber in water at elevated temperature. The solution viscosities...
Pyrolysis characteristics of sediment from the Dianchi Lake
Zhenfen Wu, Huilong Luo
Pyrolysis properties of Dianchi lake sediment in China at 10 /min and 20 /min were investigated by TG. Comparison to the TG and DTG curves at different heating rates, the pyrolysis reaction at 10 /min was in advance and more completely than at 20 /min, thus the process of sediment pyrolysis could be...
The Application of Image Processing in the Criminal Investigation
Image processing technology plays an important role in fighting against crime and criminal cases. In the case investigation, the image processing technology can provide evidence for the trial and the litigation of the case, the case investigators can take this as a clue, and then detect the case. However,...
Research on the Advanced Computing Method for Supporting Large Data Quality Assessment and Improvement
He Yang, Jiangqi Chen, Xiaojia Xiang, Heng Liu, Yunpeng Li
To support the high efficient and fast data quality assessment of electrical operation, we need to make optimization of high performance computing technology on computing platform, this paper carry out in-depth research on the performance bottleneck that the data quality evaluation system faces, after...
Apparent Age Estimation with CNN
Apparent age estimation from face image has become relevant to an increasing amount of applications, particularly since the rise of social platforms and social media. In this paper ,we tackle the estimation of apparent age in still face images with deep convolutional neural networks (CNN).Our convolutional...
Indoor Location Algorithm in Complex Wireless Environment
Zhangang Wang, Zhiyu Lu, Hang Lu, Yankui Zhang, Donghang Jia
Aiming at the 3-dimensional positioning problem in the indoor wireless environment, TDOA-based localization model is presented in this paper. The Two-Step Least Squares(TSLS) and unscented Kalman filter (UKF) algorithm are used to solve the target's position. In the case that the line-of-sight(LOS) or...
Design and Research of the Test Data Management and Analysis System for Space Robot
Kai-Hang Ma, Yong-Ming Gao, Lei Li, Zhi-Huan Wu
According to the characteristics of space robot, the test data are sorted and research on Hadoop-based data management technology, and further study for a variety of application needs space robots data analysis techniques, whereby the proposed management and analysis system test data framework, and from...
Multi-sensor Data Real-time Monitoring and Management System Based on Onboard UAV for Ocean Observation
Xuan Li, Yong Han, Fang-Jie Yu, Ge Chen
It is of great significance for human beings to explore and develop marine resources. Nowadays, Unmanned Aerial Vehicle (UVA) is reaching a point where it can be used in marine environment research with multi-sensors. Abundant marine data acquisition, transmission, management in real-time are preconditions...
SSK Modulation with Single Photon Avalanche Diode
Song Han, Jian Zhang, Jie Song
In this paper, a Space Keying Shift(SSK) system based on a Single Photon Avalanche Diode (SPAD) receiver is presented. SSK modulation has the advantage of faster transmission rate than OOK modulation, and the implementation complexity is not high, it will become a widely used modulation method in single...
A Feature-based Method for MBD Model Exchange among Heterogeneous CAD Systems
Weikang Xie, Gang Zhao, Yong Yu, Yaodong Wang
To solve the problem that missing feature and non-geometric information when MBD (Model Based Definition) model is exchanged among heterogeneous CAD systems, a feature-based heterogeneous MBD model exchange method is proposed considering geometric feature information, non-geometric information and the...
Modelica-based modeling and simulation of satellite On-orbit deployment and attitude control
FeiFei Chen, Gang Zhao, Yong Yu, JiangYong Wang, Peng Cao
In order to reflect the dynamic characteristics of satellite on-orbit deployment more precisely, a Modelica-based modeling and simulation of satellite on-orbit deployment and attitude control was achieved. Form Modelica standard library, world component was extended, this simulation system integrates...
Development and Application of Fiber Strain Monitoring System for Ship Structure
Sujun Yang, Huien You, Shihai Hua, Yanqing Wei
Ships are characterized by complex structure and poor operation environment. It is very important to monitor the health state of the ship structure. In the paper, one-way and three-way optical fiber sensors in ship structure monitoring are designed and produced. Related values are simulated. Related...
First-principles calculations of electronic properties of P -Si3N4 and P -Si3N4 under pressure
Xiaoqian Wang, Hui Lv, Yanhua Yin, Mei Sun
Using first-principles computations, the structural, electronic properties of P - and P -Si3N4 in the pressure ranges of 40-50 GPa were investigated systematically, and the band structures and density of states have been analyzed in detail. the results show both P - and P -Si3N4 are insulators, and there...
Application of Gray Cloud Model in Software Quality Evaluation
Yong Shao, Zhen Jia, Changshun Yan
Based on analyzing software quality, the model provided by GB / T 16260.2 was adopted as the grounds of evaluation index system, and the index weight was determined by analytic hierarchy process (AHP). In addition, take the incompleteness and randomness of information into consideration, the evaluation...
Biosurfactant applied to remediation of cadmium contaminated soil
Da Zhao, Tong Bao
This study reported the feasibility of flushing remediation of cadmium contaminated soil using bacteria fermentation solution. Batch experiments were performed to test the factors influencing remediation of cadmium contaminated soil. The effects of concentration, pH value and contact time on the removal...
Gray Prediction of Air Pollutants in Beijing Based on Improved Residual GM (1, 1) Model
Yong Shao, Yang Zhang, Changshun Yan
Based on the gray system theory, the original gray predicting model, the residual correction model and the residual model have been established for PM10, SO2 and NO2, which are the major atmospheric pollution factors in Beijing. After comparing those three models, this paper established a new improved...
Study on Axial Compression Test of Fiber Reinforced Ultra-High Strength Concrete Column Confined by High-Strength Reinforcement
Mingyang Zhang, Xin Tang, Weilun Wang
Axial compression test of 9 high-strength reinforcement confined ultra-high strength concrete with PVA fibers columns were presented. The influence of concrete strength, reinforcement spacing on the behavior of the confined concrete was investigated. The results show that the ductility of columns decrease...
Influence of process parameters on punch force evolution in deep drawing process
Wenyu Ma, Fengqin Wang, Lin Zhao, Xibang Zhang, Ziying Liu
In order to obtain a deep understanding on the influence of process parameters on punch force evolution during deep drawing of AA6111 sheet at elevated temperatures, the design of experiment (DOE) and analysis of variance (ANOVA) were employed. The process parameters analyzed in this paper are forming...
A Study on temperature field and spheroidizing annealing process in Bell-type annealing furnace
Xibang Zhang, Ziying Liu, Fengqin Wang, Lin Zhao
The convection heat transfer coefficient and equivalent radial thermal conductivity are two important parameters of the heat transfer process in bell-type annealing furnace. This paper establishes finite element model and calculates temperature field. The model treats the boundary condition based on...