bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparison and Improvements of Image Denoising Based on Wavelet Transform
Authors: Xiao Xue Mei
Published: March 2015

Wavelet transform denoising is an important application of wavelet analysis in signal and image processing. Several popular wavelet denoising methods are introduced including the Mallat forced denoising, the wavelet transform modulus maxima method and the nonlinear wavelet threshold denoising method. Their advantages and disadvantages are compared, which may be helpful in selecting the wavelet denoising methods. At the same time, several improvement methods are offered.
Endada: An Efficient Network Design Algorithm Based on Weighted Graph for Data Aggregation in Internet of Things on Marine Ships
Authors: Xie Feng , Ye Xiao Hui
Published: March 2015

Internet of Things is envisioned as promising technologies for remote equipment maintenance in large marine ships. Data aggregation is critical for sensing data collection in Internet of Things. The network design affects data aggregation efficiency. As the volume of sensing data is large due to the number of equipments, it is mandatory to decrease the communication overhead in data aggregation. In this paper, we propose a weighted graph based network design algorithm for data aggregation, called Endada. The communication efficiency is improved by Endada, which is justified extensively by formal analysis and rigorous proof.
Analysis and Calculation of a Gravity Turbine Torque, Speed
Authors: Wang Hao , Yin Zhi Hong
Published: March 2015

In order to understand the operation of the water turbine generating by gravity .With the method of Linearization, equivalent and torque balance, this paper analysed, drove and calculated the water turbine’s rotational torque and speed theoretically ,and calculated by using examples according the motion characteristics of the turbine. By calculating, the factors of the water turbine’s capacity, the expression of the rotational torque and the turbine’s speed were obtained.
Fast Text Processing for Interlaced Sports or News Videos
Authors: Huang Qian , Xu Feng
Published: March 2015

Interlaced scanning has been widely used as a trade-off solution between picture quality and transmission bandwidth since the invention of television. During the past decades, various interlaced-to-progressive conversion algorithms have been proposed to improve subjective quality or coding efficiency. However, almost all the researchers concentrate on general cases, without making full use of specific application scenarios. Based on extensive investigations, eliminating visual artifacts in areas of subtitles and station captions for interlaced sports and news videos is still an unsolved problem, which will be addressed in this paper. Firstly, motion estimation is performed between field pictures. Secondly, text edge detection is proposed for sports and news videos. Finally, different processing strategies are applied to text regions and non-text regions. Experimental results show that the proposed method can generate much better text content than existing algorithms. In addition, it is quite stable for non-text parts.
Flower Bud Detection Based on Saliency Map and SURF Feature-Points
Authors: Yue You Jun , Li Xiang , Zhao Hui
Published: March 2015

The flower bud ratio is an important criteria and nodus in flower automatic grading realization, however using computer vision to detect flower bud still remains a challenge. This paper presents a flower bud detection model as a resolution: By using spectral residual method to calculate saliency map and using SURF feature-points, we can quickly and unambiguously obtain the SURF histogram, then construct the flower bud detection model with SVM. The experiments indicates that the flower bud detection model which provides an effective way for measuring bud ratio in flower automatic grading system can distinguish between bud and bloom with good results.
Image Acquisition and Processing for Laser Autocollimator
Authors: Liu Shao Jin , Li Jian Rong , Wang Chun Xia , Liu Yu Sheng
Published: March 2015

For the needs of laser autocollimator in image acquisition and processing, designed the hardware circuit based on FPGA and DSP as the control core, detailed the system hardware composition. Image sensor initialization and configuration were elaborated, cached the image data by double buffering technique. By reading the cache data, pretreatment, spot extraction, calculating barycentric coordinates and data fitting, the high precision of angle measurement was obtained. The system design is reasonable, the hardware circuit is reliable, and the video capture image is clear. The functionality of image acquisition and processing is achieved.
Multi-Object Tracking with Single Camera
Authors: Dong Yu Bing , Sun Ying , Li Ming Jing
Published: March 2015

Multi-object tracking has been a challenging topic in computer vision. A Simple and efficient moving multi-object tracking algorithm is proposed. A new tracking method combined with trajectory prediction and a sub-block matching is used to handle the objects occlusion. The experimental results show that the proposed algorithm has good performance.
Preparation Process of KNN-0.008BF Lead-Free Piezoelectric Ceramics
Authors: Cheng Guo Yuan , Fu Xing Hua , Jin Xin , Tao Wen Hong , Qiang Yu Qin
Published: March 2015

In this paper, the sol-gel method was used to systematic study of the preparation conditions and sintering conditions about KNN-0.008BF powders. At the same time, microstructure and electrical properties of ceramics were studied and analyzed. In this experiment, citric acid(CA) as metal chelator, ethylene glycol(EG) as esterification and chelating agents. Through a large number of experiments, n(citric acid):n(ethylene glycol)=2:1, n(citric acid):n(Nb5+)=1.5:1 is the best equipped ratio. This ratio can obtained pale yellow transparent solution. Under the experiments condition, PH of the precursor solution and the sintering temperature of powders have great influence on experimental. Experiments confirmed that PH=5-6 and temperature=1100°C is the best preparation condition, in which condition piezoelectric ceramics can obtained excellent structures and piezoelectric properties.
Design of Soil-Granularity Analysis System Based on MATLAB
Authors: Rao Jian Lin , Hou Jian Shu , Chen Hao , Li Hai Hua , Wan Xue Yi , Wang Xiao Xue
Published: March 2015

The system in the paper based on Matlab platform. With the aid of image processing toolbox of soil image analysis and processing, the soil grain size distribution and its inclination angle can be got. It overcomes the insufficiency of the existing image edge extraction method, and proposes a new type of detection method, in order that the region of interest can be more accurately extract. The system is helpful to predict the possibility of the regional landslides.
Studies to Determine the Wind Profile Radar SNR Threshold Method
Authors: Yi Cheng Long , Wu Lei
Published: March 2015

The wind profiler is used to detect the atmospheric turbulence signal and the atmospheric three-dimensional wind field information. The SNR of the wind profiler directly affects the credibility of synthetic wind and radar actual detection altitude. Therefore, it is very necessary to evaluate the detection ability of radar by the definition of SNR threshold value. SNR threshold value method, based on the wind profiler signal simulation, get the theoretical SNR threshold which is 1.30. The method is tested with the observational data from January 2013 to December of the Beijing yanqing CFL-08 wind profiler. The results show that this method can get the range of actual SNR threshold is 1.30-1.45, which is the same as theoretical threshold.
Customizing Dynamic Libraries of Qt Based on the Embedded Linux
Authors: Li Yang , Wang Yun Liang
Published: March 2015

With the development of embedded system, embedded graphics user friendly, intuitive interface(GUI) used for communication with users becomes a research subject. The article mainly introduces the customization of dynamic libraries of Qt under the ARM11 and Linux environment, which can save disk space of the ARM board.
A Kind of Fuzzy Set for Rough Fuzzy Sorting Method
Authors: Gang Jia Tai , Liang Kun , Niu Ming Ming , Liu Xue Sheng
Published: March 2015

Fuzzy set sorting method is studied in this prepare. Firstly, a sorting method of Fuzzy number is proposed under the condition of rough fuzzy number. Use rough fuzzy number to approach fuzzy set by rough set and fuzzy set; it is an approximate expression of fuzzy set. Secondly, prove partial order structures above method and give an example for fuzzy set sorting method, showing the whole process for the sorting method. Lastly, summarize the sorting method that is convenient, concise and easy to apply. It is enrich and supplement for fuzzy sorting method.
Remanufacturing Technology in Application of Imported Electro-Discharge Texturing Roll Machine
Authors: Zuo Zhi Yong , Jiang Li , Zhan Yi Qing , Yang Li
Published: March 2015

The imported Electro-Discharge Texturing machine has widely used in domestic steel plants, this paper introduces the working principle and structure of SM Electro-Discharge Texturing generator produced by KLEINKNECHT Company. The remanufacturing of Electro-Discharge Texturing machine has considerable economic value, and we discuss the repair feasibility and detection principle through specific examples.
Control Model of Software Engineering Risk Based on Hidden Markov Model
Authors: Zhang Jian Ye , Xu Fang Qiu , Li Cun Bin
Published: March 2015

Software engineering risk is an important issue in software engineering research and the formation and measuring of software risk is also a difficulty. Since the risk transmission effect is not considered in traditional software projects, based on risk element transmission theory and hidden Markov model, a new model called Hidden Risk Markov Model was proposed. The model takes into account the effect of software engineering risk transmission in different prototype stages on final software engineering risk and uses the observable risk element transmission to calculate the degree of engineering risk. Finally, an example of software engineering risk control was presented.
Incentive Mechanism Research for Media Streaming Base on Social Norms and Taxation Mechanism
Authors: Liao Xin Kao , Wang Li Sheng , Wang Ke Te , Xu Xiao Jie
Published: March 2015

Because of the nodes inherent rationality, P2P network system will generate the free-riding that will result in conflict between the personal interests and the system performance. This kind of free-riding will significantly reduce the network efficiency and utility. A set of social norms and model applied in media streaming will be established based on the social norm in combination with taxation mechanism. This model can punish the nodes that have evaded tax and stimulate the node to remit taxes. The results of the simulation experiment show that the model can both promote the nodes to pay taxes and reduce the wealth gap between nodes.
SQL Injection-Database Attack Revolution and Prevention
Authors: Yang Zheng Xiao
Published: March 2015

SQL injection came with a bang and caused revolution in database attacking. Inrecent years, with the explosion in web-based commerce and information systems, databases havebeen drawing ever closer to the network and it is critical part of network security. This paper is incorporated with our research and firsthand experience in hacking the database by SQL injection. Database is the Storage Brain of a website. A hacked database is the source for Passwords and juicy information like credit card number, bank account number and every important thing that are forbidden. Importance should be given for preventing database exploitation by SQL injection. The aim of this paper is to create awareness among web developers or database administrators about the urgent need for database security. Our ultimate objective is to totally eradicate the whole concept of SQL injection and to avoid this technique becoming a plaything in hands of exploiters.
Design and Simulation of Hybrid Braking System Collaborative ABS
Authors: Peng Ling , Liu Qing He , Xu Qing Yang , Peng De Qing
Published: March 2015

This paper presents a creative profile of hybrid braking system (HBS) in order to resolve the collaboration between regenerative brake system (RBS) and ABS. Its mathematic model was set up and simulated in Matlab/Simhydraulic. The simulations show that it can collaborate with the control process of ABS and RBS and promote the efficiency of energy regeneration.
Integrating Cloud Computing and IoT for Community Health Service
Authors: He Dong Zhi , Li Yong , Huang Zhang Qin , Liu Zhong Ying , Cheng Xiang Zhi
Published: March 2015

Nowadays, China is stepping into an aging society, and most people care about their personal health with the Chinese economic development. Chronic-diseases have become the major threat to the elder people in China. In order to ensure a real-time health care for the elders, we propose health cloud platform with IoT for community health service. The platform includes IoT health services subsystem, health cloud application service subsystem and data management subsystem. The System development and service scheme is composed of six parts according to the function: front-end data acquisitioning module, message middleware, storage center, data mining center, medical graphics image processing center and presentation layer. The health cloud platform has two main functions: real time medical care technology and personalized health service. The successful deployment of health cloud can take demonstration for others application, and promote itself cloud computing technologies development.
Timeslot Management’s Design and Implementation of AIS Terminal Equipment
Authors: Jin Ying , Zhang Shu Fang
Published: March 2015

Our project team designed and realized an Automatic Identification System (AIS) terminal equipment specifically which is based on an ARM7 chip and compatible with a self-developed FPGA chip. The main research topic is about the timeslot management and implementation in this equipment. I designed a timeslot list in the form of an array, to storage every timeslot state in each channel and current frame real-time, intuitively, and conveniently. When there is a timeslot-occupied or a timeslot-reserved in the equipment, the timeslot list can storage the timeslot state real-time. This timeslot state is defined as whether each timeslot is currently occupied, what action occupied it, how long the timeout is. And manage the timeslot every timeslot by timeout, to realize each timeslot management in A/B channels. When the equipment will select candidate timeslots to send message, it could read the timeslot state by the timeslot number directly to know whether it can send message in this timeslot. Make sure its timeslot reuse, prevent its timeslot collision, and realize the communication real-time and effective.
Sunlight Greenhouse Temperature Prediction Model Based on Bayesian Regularization BP Neural Network
Authors: Zhao Hui , Shi Li Rong , Wang Hong Jun
Published: March 2015

Directing against the problems of too large size of the neural network structure due to the existence of a complex relationship between the input coupling factor and too many input factors in establishing model for predicting temperature of sunlight greenhouse. This article chose the environmental factors that affect the sunlight greenhouse temperature as data sample. Through the principal component analysis of data samples, three main factors were extracted. These selected principal component values were taken as the input variables of BP neural network model. Use the Bayesian regularization algorithm to improve the BP neural network. The empirical results show that this method is utilized modify BP neural network, which can simplify network structure and smooth fitting curve, has good generalization capability.
Security Analysis of Two Chaotic Maps-Based Authentication Scheme
Authors: Du Chun Xia , Wen Feng Tong , Lin Hao
Published: March 2015

In a recent paper, Chang et al. proposed an authentication scheme for E-coupon systems and proved that their scheme can prevent a range of attacks. In this paper, we reanalyze the Chang et al.’ scheme and demonstrate that it cannot resist off-line password attack, masquerading shop attack and masquerading customer attack. Moreover, it cannot achieve two security properties that is anonymity and traceability. Meanwhile, Lee proposed an efficient chaotic maps-based authentication and key agreement scheme using smartcards for telecare medicine information systems. In the scheme, we find it also cannot resist off-line password attack, masquerading attack. Unfortunately, it resists an deadly error. So the scheme cannot run.
Urban Transport GSPN Model of Cyber-Physical Systems
Authors: Zhao Wen Cang , Tong Bo , Wang Xiao Xiao
Published: March 2015

Urban transport is an important part of urban activities, and it is not just a public works technical problems or traffic problems, but also is a comprehensive social problems. There are some traffic congestion problems exist in the current urban traffic network. By using the theory of generalized stochastic Petri to the study of Cyber-physical Systems (CPS), this paper established an urban transport GSPN (Generalized Stochastic Petri Net) model, which chosen bus priority strategies to improve the utilization of road.
Application of Modeling and Simulation Based on Agent
Authors: Shao Yan Hua
Published: March 2015

In order to solve the limitation of the research about enterprise evolution modeling and simulation, the idea of applying complex adaptive system theory and agent-based computational finance method to the enterprise research was proposed. Secondly, an applied model of Agent-based enterprise evolution was built. Finally, the simulation program of enterprise evolution based on swarm was built, which simulate the dynamic competitive behavior and evolvement of enterprise, the result of the simulation was analyzed.
Investment Benefit Evaluation of China Grid Communication Resources Based on DEA and Grey Relational Analysis
Authors: Zhai Zhang , Gui Dan , Xu Xiao Guang , Gao Jian Wei
Published: March 2015

The evaluation of grid communication resources investment plays an important role in planning and investment decision-making. This paper first develops a comprehensive evaluation index system by combining the practical work of grid communication investment with the significant benefits, such as communication technology upgrade and service capacity building. Furthermore, based on this index system, we construct an evaluation model by screening effective alternative based on the method of DEA (data envelopment analysis), moreover, we determine the index weight by using improved grey correlation degree method. Finally, we provide an example of Henan Electric Power Communication Company to examine our model. The results show that the model is feasible and effective.
Design and Application of the Similarity Measure Simulation Applied in Project Portfolio Allocating
Authors: Bai Li Biao , Bai Si Jun , Guo Yun Tao
Published: March 2015

Starting with synergetics and systems engineering theory, this paper proposes a model for measuring the similarity among allocated modules of Project Portfolio Allocation at the level of project. Utilizing concepts like order parameter of fit, good-of-fit for Project Portfolio Allocation (PPA) and similarity among allocated modules, this paper uses the value of similarity among allocated modules of PPA to reflect the similarity among allocated module which provides a useful analytical methods for project portfolio allocation management in large state-owned firms. Finally, the effectiveness and feasibility of the proposed model is demonstrated and validated by a case study.
A CPN Based Model for a Typical Product Development Process
Authors: Yin Xiao Ling , Yang Bo , Li Hai Tao
Published: March 2015

To take a wonderful understanding of design process, a modeling method based on colored hierarchical timed Petri nets and a model for a typical process of product design using this method are introduced. Then, aiming at some key issues, the model are simulated by CPN Tools and the results are shown in the paper according to which some convictive conclusions are drawn which indicates the method introduced is valid and reasonable.
Assessment of Investment Capacity of Power Companies Based on TOPSIS Method
Authors: Liu Wei Dong , Zhu Jian Min , Xia Hua Li , Qi Xue Cheng , Zhou Shu Yi , Qin Hong Hao
Published: March 2015

Establishing the evaluation index system, from their own investment capacity, corporate external financing capacity of the two dimensions, using resultant weights and TOPSIS method for comprehensive evaluation of investment capacity of the power enterprises. Set a power company for example, results show that, the evaluation results are in line with the actual investment capacity situation of the power enterprises, the established evaluation index system and evaluation model has better applicability.
Contents and Sources of Zn in Jiaozhou Bay
Authors: Yang Dong Fang , Zhu Si Xi , Wang Feng You , Yang Xiu Qin , He Hua Zhong
Published: March 2015

This paper analyzed the content, distribution and source of Zn in Jiaozhou Bay in 1982. Results showed that the Zn contents in surface waters in April, June, July and October ranged from 1.75-167.71 μg.L-1, 8.31-36.97 μg.L-1, 7.05-12.18 μg.L-1 and 1.75-5.25 μg.L-1, respectively. Cu contents in most of the monitoring sites in April were meeting Grade III or Grade IV in National Sea Water Quality Standard (GB 3097-1997). While most of the monitoring sites in June, July and October were meeting Grade I or Grade II. The major Zn sources in the bay was overland runoff, ocean current, and deposition, whose input contents ranged from 37.90-167.71 μg.L-1, 1.31-36.97μg.L-1 and 1.75-12.18 μg.L-1.
Research Progress of Air Purifier Principles and Material Technologies
Authors: Wang Yun Han , Wang Hao , Zhao Chang Zhong , Zhang Yi
Published: March 2015

This article mainly refers to purification technology and material technology of air purifiers. There are several purification technologies in air purifiers such as HEPA(high efficiency particulate air filter), Mineralization technology of ultra light structure, Negative ion technology, the photocatalyst technology, electrostatic dust collection, Activated carbon adsorption technology and etc. And material technologies are classified as Photocatalyst, Activated carbon, Synthetic fiber, HEPA, Negative ion generator and etc. The paper reviews the characteristics, purification theory, research status and applications of every kind of purification technologies and material technologies. On this basis, we put forward outlook on the future development of air purifier.
The Biomass Economic Evaluation Mode of Small Towns Heating
Authors: Mao Hu Jun , Wu Xing Long , Lv Zi Qiang , Liu Guang Qiang
Published: March 2015

It can clear the various economic factors in the process of the implementation of the small towns heating to establish small town heating economic model. It comes down to the total economic cost of small towns heating under the condition of different fuel types to analyze the parameters in the mode with different fuels according to the heating process. When some kind of fuel is used, by calculating we can conclude that the lowest heating cost contributes to use of economical fuels in the region.
Study on Recovering Iron from Shandong Red Mud Based on Gas Reduction Reaction
Authors: Hou Xing Wu , Wu Yu Min , Huang Ding Guo , Gao Yan Yang , Liao Jian Guo , Li Ning Bo
Published: March 2015

Based on Shandong Renping Bayer red mud as the raw material, analyzing its basic characteristics, the result is that the content of total iron in red mud is 29.55%. Gas-based high-temperature direct reduction experiments are made by using a gas mixture of CO and H2O as a reducing agent. And then the reduction effect was investigated by magnetic separation experiments, to realize that separation of iron minerals from red mud. The results show that the consequent of the magnetic separation is improved obviously with the temperature rising. Under these conditions, namely, the roasting temperature being 1050°C, the roasting time lasting 90 minutes, the reduction gas rate being 0.7 m3/min, the magnetic field being 2.2A, and three magnetic separations, the iron recovery ratio in red mud is over 97%.
Research on the Preparation of Catalyst in Dealing with AR88 by CWAO
Authors: Yin Min , Gu Jin Chuan , Fan Zhi Jin , Zhao Wei
Published: March 2015

This article describes the research on the preparation of the catalyst which is used to deal with Acid Red 88 by catalytic wet oxidation. The experiment investigated the effect of catalyst carrier, impregnation and roast temperature etc on the catalytic activity. Found the optimal conditions to make catalyst finally, it can be described as follows: take lithium silicon powder as a carrier; 0.1mol /L iron nitrate as active ingredients to dip 20 hours; and then, calcined 90 minutes under the condition of 500°C. The removal rate of Acid Red 88 can reach up to 97.2% by the use of these catalysts after 60 minutes reaction.
Design of Mechanical Agitation Biological Reactor Usedin Municipal Solidwaste Composting
Authors: Zheng Guo Xiang , Yang Jie , Guan Zheng Jun , Zhu Kun Zhan , Zhao Xin
Published: March 2015

In order to solve the problems of uneven mixing and aerating in municipal solid waste composting, we present a structural design of mechanical agitation biological reactor. The biological reactor system is composed of cylinder tank, agitator, motivation and drive device. The agitator shaft of reactor is hollow and has 24 holes under agitator blade. The article not only introduces the structural design and check of main body, and rack of reactor, but also the selection of type of arranger. The design of agitator gives consideration to both agitation and aeration, which makes air and materials mixed sufficiently during agitation and the fermentation is more fully.
Novel PAHs-Degrading Strain Yarrowia lipolytica TZYx3 and its Synergistic Interaction with HA
Authors: Zhang Xin Xin , Yu Hong Yan , Wang Yu Xin , Wu Han Gui
Published: March 2015

A novel PAHs (polycyclic aromatic hydrocarbons)-degrading strain, TAYx3 was isolated from mineral oil and heavy metal contaminated soil. Strain identification and characterization showed that TAYx3 wasYarrowia lipolytica.Tests forYarrowia lipolyticaTAYx3 growth on different substances are also described. The strain could use all PAHs tasted as sole carbon source, and showed synergistic interaction with humic acid (HA). With the existence of HA, the degradation rate of TAYx3 was naphthalene 90.7%, phenanthrene91.0%, fluoranthene74.7%, pyrene 86.9%, benzanthracene 84.7%, benzopyrene 74.7%, respectively.
The Impact of Condensing Pressure on the Performance of Solar Solid Adsorption Refrigeration System
Authors: Song Xiang Bo , Ji Xu , Li Ming , Liu Jia Xing , Yin Shao Lin
Published: March 2015

A new solar solid adsorption refrigeration system is established in this paper, and the variation relationship between the adsorbent bed temperature and pressure with time are analyzed, and the effects of adsorbent bed condensing pressure on the system performance is researched. Results show that, under the same working conditions, when the condensing pressure is 39 kPa, the daily ice-making capacity of system reach to 5.5 kg with the refrigerating capacity of 2.26 MJ; And when the condensing pressure is 63 kPa, the ice-making capacity of system is only for 3 kg with the refrigerating capacity of 1.48 MJ; The refrigerating capacity of the former is 1.5 times of the latter.
Comprehensive Evaluation of Mining Geological Environment Damage
Authors: Wang Ying , Sun Kui , He Xiao Lang
Published: March 2015

According to the relevant specification and the actual survey results, this paper selects 14 evaluation indexes from the mine geological disasters, the destruction of landform landscape, aquifer breakdown and land resource utilization destroyed in four aspects, and then application of the Analytic Hierarchy Process (AHP) to quantify the weight of each index values, establish comprehensive evaluation mathematical model of the weighted scores based on Analytic Hierarchy Process. And applying the method to the eighth mine of Ann pingdingshan coal Co., LTD, the result of evaluation and the fact are identical, the evaluation method is reasonable and feasible.
Application of Analytic Hierarchy Process and Vector Modulus Method in Evaluation of Water Environmental Carrying Capacity in Jiaozhou City
Authors: Bai Hui , Chen Yan , Liu Yan Ling , Dai Wen Yan
Published: March 2015

In this paper, the water environmental carrying capacity (WECC) was quantitatively analyzed considering the comprehensive effect of economy, society, resources, environment, and technology in Jiaozhou, Shandong province. An evaluation index system was established and applied in the evaluation of WECC in Jiaozhou from 2007 to 2011 with analytic hierarchy process (AHP) and vector modulus method. The results indicated that the WECC index was at low level in the range of 0.061-0.080 with the decreasing trend firstly but then increasing trend gradually, which shows that the water resources shortage is becoming the key factor restricting the development of Jiaozhou. The results conform to the real condition of Jiaozhou and the research provides the scientific methods and suggestions for the coordinated development of social economy and water environment protection.
The Modeling and Simulation of Solar Energy Generation System Based on Matlab/Simulink
Authors: Shi Xiu Feng , Mu Shi Guang
Published: March 2015

The paper firstly introduces the current status of solar energy generation and analyzes the principle,then uses Matlab/Simulink to model and simulate solar energy generation system, finally makes a performance analysis of the simulation results,which is that the influence of different temperature and solar radiation intensity to the voltage-current and power-voltage of solar energy cells.
Delineation of Groundwater Sources Environmental Quality Red Line Using Numerical Simulation Method
Authors: Jing Liu Xin , Liu Wei Jiang , Wang Dong
Published: March 2015

Delineation of groundwater sources environmental quality red line fully embodies the strictest possible rules to protect the ecological system. Underground drinking water source protection area boundary should be the “red line” and its management requirement should be implemented in the “red line” area. As an example of underground drinking water in Tengzhou, groundwater sources environmental quality red line was delineated, using MODFLOW and MODPATH. The groundwater flow model was validated by 5 observation wells data. The results showed that the model could describe the actual situation of groundwater flow in the study area. The smallest error between calculated value and measured value was 0.42m and the maximum error was 2.09m. The area boundary of backtracking particle which had run 100 days was the groundwater sources environmental quality red line. The maximum distance from the groundwater source central position to the red line was 360m, and the minimum distance was 200m.
The Chemical Dynamic Characteristic Research of Inland Shallow Salt Water
Authors: Peng Tong Qiang , Zhang Feng Juan , Xing Li Ting , Han Yan Cheng , Han Zhao , Zhou Juan , Xu Min Tian , Yang Yi
Published: March 2015

Shallow inland water resources has a large potential for development. To Jiyang shallow groundwater for example, through the regular ion-test analysis, Piper diagram and hydrogeochemical characteristics, the results show that: (1) The type of chemistry of shallow groundwater inland were Cl·SO4-Mg·Na·Ca; (2) The salt water area is relatively fixed, there is no expansion or decreasing trend; (3) The level flow of shallow groundwater is slow and water rock interaction is strong, that is not conducive to the shallow groundwater quality improvement, changing the runoff conditions of shallow groundwater is essential way for shallow groundwater resources exploitation.
Application Analysis of the Recovery Fresh Air Heat Pump Units in Energy Saving Reform of Air Conditioning in the Severe Cold Regions
Authors: Chen Ao Xue , Chen Zhao , Ran Chun Yu , Wang Chun Qing
Published: March 2015

This article introduces the working principle of the recovery fresh air heat pump units,and analyzes the applications system which units apply in air-conditioning heat recovery system.By using the principle of regression analysis of mathematical statistics,the article measured data for statistical analysis.The regression equation is established, the established regression equation has a high prediction accuracy.
The Application of GMS
Authors: Wang Ying , Yang Pan Pan
Published: March 2015

Currently, there are lots of groundwater simulation softwares, but the GMS software is being more and more widely used , with friendly interface, powerful front and post-processing functions and good effect of 3 d visualization. In GMS software, on the basis of a brief introduction to the module of the software, presenting the advantages of the software and analyzing the prospects in the research field of mine water prevention and control of application.
Sunken Lawn: Sink Effect for Stormwater Pollution
Authors: Gao Wei , Lyu Yong Peng , Xie Sheng , Li Wen , He Juan
Published: March 2015

The soil column was structured to simulate the sunken lawn and three processes were simulated, including rainfall and runoff process, surface erosion and vertical infiltration process, pollutant migration and transformation process. Results show that sunken lawn is a sink and has significant effects for stormwater pollution. The overall reduction rates of CODCr, TN and ammonia is 71.01±1.75%, 69.00±1.78%, and 64.39±1.84% respectively. The reduction effect is related to the pollution load, hydraulic loading and antecedent dry period.
The Risk Assessment of Cultivated Land Damaged by Flooding Disasters in China
Authors: Liu Jun , Wang Wei , Ai Dong , Zhang Rong Qun , Hou Wen Jie
Published: March 2015

Flooding disasters not only threat the people's life and property, also affect the safety of environment resources ecosystem, which could make the destructive damage to the cultivated land resources both at quantity and quality. The cultivated land, once damaged, need to invest huge human, material and financial resources to restore its agricultural productivity. Based on analyst the formative factors of cultivated land damaged by flooding disasters, this paper selecting the restrictive factors such as, rainfall, relief amplitude, flooding disasters frequency and water system (including rivers and lakes),combing with the comprehensive evaluation method and putting forward the corresponding countermeasures. The risk of cultivated land damaged by flooding disasters in China is divided into severe risk, moderate risk and light risk level three class and nine subclasses totally. The result shows that: severe risk class covers an area of 194400 km2, accounting for 15.13% of the cultivated land; Moderate risk class covers an area of 407400 km2, accounting for 31.71% of the cultivated land area; Mild risk class covers an area of 682900 km2, accounting for 53.16% of the cultivated land area. Making a risk grading evaluation to the cultivated land damaged by flooding disasters provides the basic theory basis for flooding disaster prevention, disaster relief, land consolidation planning and the establishment of basic farmland construction standards.
Research on Sand-Blocking Mechanism of Fence Based on CFD Technology
Authors: Wang Zhi Qiang , Qin Zhi Gui , Li Zhi Kang , He Yi Feng , Fu Bao Feng
Published: March 2015

The airflow field and sand movement path around fences of 0 and 40% porosity are of numerical calculation by CFD technology and the sand-blocking mechanism of fence is analyzed comprehensively. The results show that the two preconditions for the good sand-blocking performance of fence are to greatly reduce the coming wind velocity and form a large weak wind velocity area, and ensure the sand movement path in the weak wind velocity area. The numerical simulation research of the sand-blocking mechanism of fence is an useful supplement of traditional experimental research and of reference significance in further understanding the dynamic mechanism of fence protection.
Study on Extraction Methods of Saline-Alkali Land Based on Remote Sensing Image and Influencing Factors
Authors: Chen Jing , Zhao Wei Quan , Zhao Li Hua , Huo Lei
Published: March 2015

Remote sensing image interpretation is one of the commonly methods to extract saline-alkali land. But it can only extract saline-alkali land of unused land, can not divide the types of slightly saline-alkali land, moderately saline-alkali land and severely saline-alkali land. On the basis of remote sensing image interpretation of 2010, the paper calculated the relationship between saline-alkali land degrees and the normalized difference vegetation index (NDVI), elevation, soil type, groundwater, river, urban expansion. Use AHP and Delphi to assign weights, calculate values, and overlay the layers, then concluded the degrees of saline-alkali land.
Wind Resource Analysis of Donghai County
Authors: Liu Cheng , Wang Tian Yu , Li Ze Qing
Published: March 2015

This paper discusses the placement of the wind power plant’ selection process,wind-farm built in Donghai county,Jiangsu province is proposed to select the appropriate wind-farm from the aspects such as macro-sitting and micro-sitting selection.On the basis of the actual measurement data in the site,using histogram and meteorological rose evaluate wind energy resources of the wind-farm,to determine the selection of the wind-farm site and wind turbines and the layout of wind turbine generator system.Special software is adopted to improve the professional evaluation and the effectiveness of the site selection.
New Method for Internal Wave Parameters Retrieval by SAR
Authors: Fan Kai Guo , Chen Peng , Gu Yan Zhen , Liu Ting Ting , Wang Wei
Published: March 2015

This paper introduce a new method for extracting internal wave parameters from SAR image. The surface current induced by the internal wave is simulated according to the KDV equation. Then the radar cross section induced by the internal wave can be calculated. The wind speed and pycnocline depth are modified using the dichotomy method step by step which causes the simulation radar cross sections close to those measured from the SAR image. Finally, both the wind speed and pycnocline depth can be obtained. This method is tested on the example of an SAR image. The simulated internal wave signal is consistent with the radar cross sections of SAR images. Their correlation coefficient is up to 90%, which indicates that this method is convergent and applicable.
Analysis of Inter-Well Correlation in Carbonate Reservoir
Authors: Zhang Hang , Li Zhi Ping , Lai Feng Peng
Published: March 2015

The evaluation of inter-well correlation is an important basis which can instruct engineers to analyze reservoir water-flooding effect, propose the adjustment suggestion. To solve the difficulties of water-flooding evaluation of carbonate reservoir, a new method is proposed based on inter-well connectivity and unascertained math. Firstly, an independent evaluation index system is established before calculating the comprehensive evaluation index weights by the analytic hierarchy process and similarity weight method. Then the Uncertainty measure model is established to evaluate water-flooding effect of well group. This method has been applied in the X oilfield, and good results are gained. The results show that different adjustments should be taken to improve water-flooding effects in different units.
Application of Geological Theory in Shale Gas Exploration and Development
Authors: Liu Zheng Kun , Wang Hong Liang , Man Xin Xin
Published: March 2015

Shale gas exploration and development in alleviating energy supply pressure, and low carbon economy development and adjusting and optimizing the energy structure has the effect which cannot ignore. As the north American shale gas exploration and development of the huge success, the domestic study of shale gas is also rapidly developed. So to understand shale gas geology difference at home and abroad, from accumulation mechanism, geological characteristics, the exploration method of shale gas geological theory has carried on the summary and analysis of the system. Contrast the research progress of north American shale gas, and the problems existing in the analysis in the study of shale gas in China, to select the most conducive to China's shale gas exploration and development methods. In this way it can make the success of shale gas development in China become a reality as early as possible.
Application of NMR Technology on Test of Movable Fluid Saturation of Tight Sandstone Gas Reservoir
Authors: Ming Hong Xia , Sun Wei , Wu Ping
Published: March 2015

The difference of movable fluid saturation of tight sandstone gas reservoir is researched, with transverse relaxation time (T2) distribution derived from nuclear magnetic resonance technique (NMR). This article newly calculate T2 cutoff value and elaborate the influence of pore structure on the occurrence characteristics of movable fluid. The study had revealed T2 spectrum distribution includes the following types: (1) wide and flat single peak; (2) left single peak; (3) high left peak with low right peak. Movable fluid saturation is low, with class IV and class V movable fluid mainly. Pore structure control properties and percolation ability of rock reservoir and whether oil could be driven out depends on throat parameters of interconnected pores. Movable fluid saturation is low with bigger pore throat ratio, narrower pore throat distribution and higer pore structure heterogeneity.
Fractal Structure of Au Geochemical Field for Shuikoushan Orefield in Hunan Province, China and its Application to Mineralization
Authors: Xie Yan Shi , Yin Jian Wen , Tan Kai Xuan , Chen Liang , Hu Yang , Li Yong Hui
Published: March 2015

The fractal measure on Au geochemical field of Mawangtang and Xinmengshan in Shuikoushan Pb-Zn-Au polymetallic ore field, Hunan, China was achieved by projective covering method in this paper. The results show a bifractal relation for Au Geochemical field which includes a textural fractal dimension (D1) at small scale and a structural fractal dimension (D2) at large scale with average breakpoint 86.0m which may be look as the movement scale of ore-forming fluid. All of fractal dimensions were between 2 to 3, D1 was 2.0011 and D2 was 2.0001 at Mawangtang as well as D1 was 2.4466 and D2 was 2.0408 at Xinmengshan respectively. The fractal dimensions appear the textural fractal dimensions were larger than their structural fractal dimensions indicate that the evolution of ore-forming fluid more complex than background value of this ore field. And what’s more, the fractal values of Mawangtang were larger than Xinmengshan may result from the mineralization with the former not only control by the overthrust structure and fold the same as the latter but also had a closed relationship with the acid to mafic magmatism.
Gas Geology Characteristics Analysis and Gas Prediction of the Cui Jiagou Coal Mine
Authors: Wang Ying , Li Xiao Long
Published: March 2015

Guided by the theory of gas geology, from the perspective of economic and practical and efficient mine safety production, analyzed gas geological characteristics of The cui Jiagou coal mine, the geologic factors of affecting gas emission are analyzed, and sums up important factors of gas emission in mine field. at the same time use the regression analysis method, selecting three reasonable geological factors, including coal thickness, floor elevation of coal seam, and buried depth, make prediction of The cui Jiagou coal mine gas emission, prediction results conform to the actual situation, provide a solid security prevention and control of coal mining gas prediction subsequently.
Logging Interpretation of S2 Formation of Moliqing Oilfield, Yitong Basin
Authors: Shi Shao Jun
Published: March 2015

Based on well logging data, this study has done research of well logging interpretation of Moliqing oilfield in Yitong basin. The Second member of Shuangyang formation is the main area. The main causes of complicated oil-water relationship are as follows: 1) rapid facies change produce diverse lithology distribution, and various lithology have different electrical property standards; 2) complex tectonic characteristics of study area bring about great difficulty in oil and water layer identification, especially a series of small normal faults in deep strata. According to those above, we built logging models in order to get essential parameters firstly. Then, several units of study area were divided. Different electrical property standards were established to solve the problem of recognition of water/oil layers. In total, more than 10,000 sand bodies of 149 wells were interpreted properly, and correct rate is higher than 90%. The conclusion is that oil layers distributed in high position of tectonics. Moliqing oilfield belongs to lithology-tectonic hydrocarbon reservoir.
Movable Fluid Saturation of Low-Permeability and Tight Sandstone Oil Reservoir: Taking Chang 6 Reservoir in Banqiao-Heshui Area as an Example
Authors: Cao Lei , Sun Wei , Niu Rui , Huo Lei , Qu Fu Tao , Xie Teng Yun
Published: March 2015

By analyzing the thin sections, physical property and nuclear magnetic resonance, the petrology character, pore types and the movable fluid saturation distribution characteristics of Chang 6 reservoir in Banqiao-Heshui area were tested. The research shows that the main lithology of Chang 6 reservoir in study area is lithic arkose. The pore space of reservoir mainly include the solution pores and the primary residual intergranular pores. Fine pore-tiny throat is the main pore configuration. The physical properties of Chang 6 reservoir in Banqiao-Heshui area are weak and it belongs to low-permeability and porosity oil reservoir. There are two models of T2 spectrum, including bimodal and unimodal modes. Movable fluid saturation and fluid porosity varies a lot, the reservoir can be classified as many types by movable fluid saturation and for each of them, its movable fluid saturation differs obviously.
Nonlinear Equations of Gas Seepage in Coal Considering Adsorption Effect
Authors: Zhang Zhi Gang
Published: March 2015

Previous studies showed that gas flowing in coal was nonlinear flow. The paper established the nonlinear equations of gas seepage in coal considering adsorption effect by experimentation with coal seepage properties testing device, which had acquired national invention patent. The effect mechanism adsorption to the gas nonlinear seepage in coal was expounded by analyzing the mechanical characteristics of gas nonlinear seepage. The equation established in the paper could be available for study on gas flow theory and the development of CBM.
Reliability Analysis of Fully Mechanized Working Face Based on Appraisal and Distribution Method
Authors: Zhang Guang Peng , Liu Jun
Published: March 2015

Through the system reliability theory, the reliability of each subsystem of fully mechanized working face was got. The reliability of the working face was 0.82. By using the reliability of redistribution, the reliability of weak links of the system was improved to 0.966, so that the reliability of the working face was raised to 0.86. The reliability of the working face was enhanced and the mining production was stable.