bluuebunny/crossref_metadata_2025 huggingface dataset:
Pollen-Based Reconstructions of the Ek1 and the Lower Part of Es4 of the Paleogene Vegetation and Climatic Characteristics in Dongying Depression
Authors: Liu Li’an , Zhu Nian Hong
Published: December 2012

Based on the analyses of pollen samples from Well Haoke-1, this paper studies the Paleogene pollen sub-assemblage sequences of the Ek1 and the lower part of Es4 in Dongying Depression. Four sub-assemblages are distinguished, and then four phases are recognized. Through the study, it is found that the Ek1 and the lower part of Es4 in Dongying Depression belonged to the climate of subtropical semi-arid zone and the seasonal differences of climate became increasingly great with the evolution of the earth.
The Decision-Making for Large-Scale Carbon Capture and Storage Projects in China and the U.S
Authors: Lai Xian Jin
Published: December 2012

Carbon capture and storage (CCS) can be an important technological option for managing CO2 emission in the context of addressing global climate change. Launching large-scale CCS projects is an effective way to accelerate technology development and deployment. In order to draw lessons from large-scale energy projects adoption and implementation, this study compares decision-making for large-scale CCS projects in China and the U.S. It compares the project agenda-setting and adoption process based on case study. It is argued that both countries have different advantages in launching large-scale energy projects. And leadership could be a key element for project adoption and implementation successfully. This factor should be highly considered in the technological innovation research.
Geological Storage of Carbon Dioxide in Coal Seam is Effective Method for Environment Protection and Energy Sustainable Development in China
Authors: Han Feng Shan , Song Li
Published: December 2012

The reduction of greenhouse gases emission is a growing concern of many countries. The geological storage of is useful and effective approaches to reduce emission. The oil and natural gas industries have long commercial practice of gas injection, enhanced oil recovery ( -EOR). Because coal seam has strong absorption capacity for ,the coal seam can be used as geological storage reservoirs, and coal seam has such characteristics that coal seam is preference for absorption and postponement for absorption, injection into coal seam can enhanced coal bed methane recovery, -ECBM, is a new energy generated by methane from injection into coal seam, and is beneficial complement of the energy , injection into coal seam can not only reduce greenhouse gases emission and but also enhance coal bed methane recovery, which is very significance to environment protection and energy sustainable development in china.
Comprehensive Utilization of Coal Resources Based on Industrial Circular Economy
Authors: Wang Jian , Zhang Zeng Kai , Guo Ju’e
Published: December 2012

Industrial circular economy is based on industry chain and realized through the coordination of upstream and downstream, with the purpose of comprehensive utilization of coal and other byproducts. This paper analyzes the circular economy development mode from the perspective of industry (industrial cycle economy), with Shenhua Ningxia Coal Industry Group as an example, which constructs Ningdong coal base mainly based on coal industrial circular economy. Its experiences provide certain reference for coal industry and other interrelated industries.
Information Platform and the Stability of an Ecological Industrial Park
Authors: Chen Hai Long , Feng Nan Ping
Published: December 2012

An Ecological Industrial Park (EIP) is an important practical tool to achieve sustainability, but the stability during its operation is a prominent problem. With the construction and running of many EIPs in China, the in-depth study on the stability is extremely urgent. It has been partially confirmed from the statistics that information platform influences the stability in an industrial ecosystem. On this basis, this paper further analyzed the construction of information platform in EIPs, and tried to study its promoting effects on the stability of EIPs from a new angle instead of the statistical angle.
Benefits Analysis and Utilization Strategy for Development of Shallow Geothermal Energy: A Case Study of Tianjin
Authors: Fu Ying , Zhang Chao Yu , Zhang Bo
Published: December 2012

As a renewable energy, shallow geothermal energy has received extensive concerns in China, and is regarded as an important means to relieve the pressure in energy supply, meet the greenhouse gas control obligations and establish a low-carbon economy system. In recent years, a series of policies and regulations for promoting the utilization of shallow geothermal energy has been issued. This paper firstly makes an analysis of the patterns and the growing trend of shallow geothermal energy utilization, and then establishes the analysis paradigms of the economic, environmental and social benefits of its utilization, taking Tianjin as a case. Finally, a policy system to promote the utilization of shallow geothermal energy is proposed.
Design and Benefit Analysis of Eco-Industrial Park
Authors: Wang Yan Li , Li Jing , Zhou Mei Hua , Song Xin Shan
Published: December 2012

The establishment of eco-industrial parks can not only reduce the costs of waste disposal and the purchase of raw materials, but also has a positive impact on both economy and environment. By setting Shanghai as an example, a model of the eco-industrial park was described and the design plan and operating procedures of the park were provided in this paper. Then the benefits of this park were discussed. It may bring about some practicable approaches for the development of China’s eco-industrial parks through a specific analysis as well as the presentation of an operating model.
Recent Progress of Microwave Irradiation in Synthesis and Diagnosis Treatment
Authors: Liu Ming , Hu Wen Xiang
Published: December 2012

Direct and rapid heating by microwave irradiation in combination with sealed vessel processing in many cases enables reactions to be carried out in a fraction of the time generally required using conventional conditions. This makes microwave chemistry an ideal tool for rapid reaction scouting and optimization of conditions, allowing very rapid progress through hypotheses-experiment-results iterations. Many scientists both in academia and industry have turned to microwave synthesis as a front-line methodology for their projects.
MZ Solid Catalysts for Synthesis of 1-Methoxy-2-Propanol with High Selectivity
Authors: Wang Yong Jie , Zhang Mu
Published: December 2012

This document explains and demonstrates the problem of Methanol and propylene oxide propoxylation, ZrO2 load active alkali metal oxides MgO the catalytic propoxylation method, analyzed a new type of catalyst activity and selectivity. The results show that the synthesis of MZ complex oxide as a catalyst for the reaction of Methanol substrate, through the catalytic reaction of propylene oxide, selective access to the propylene glycol ether, High selectivity synthesis 1-Methoxy-2-propanol. Synthesis of complex oxide catalyst MZ series in the course of the performance of the primary ether good selectivity, Primary ether, second ether ratio greater than 12, and the catalytic activity is also high (about 91% of all).
Protective Properties Analysis of Oxide Skin by WOT in Supercritical Unit
Authors: Qiu Wu Bin , Zhang Shan Shan , Li Chang Ming , Zhu Li Na , Hao Dang Qiang
Published: December 2012

This paper studied the different formation mechanism and the corrosion protection mechanism of oxide skin in the conditions of WOT and OT in the supercritical units. The WOT tube and OT tube of the high temperature superheater were detected by visual macro inspection, their microscopic structures were analyzed by electron microscopy and their elemental compositions were detected by EDS. The authors put forward steam oxidation mechanism of WOT and peroxide-chromium evaporation mechanism of OT. The test results were analyzed by chemical thermodynamics and chemical kinetics. The experiment and analysis proved that: the oxide skin of WOT’s tube retained the alloying elements and the design of protective structures, but the oxide skin of OT’s tube lost the alloying elements and it had not good protective properties. The studies had shown that: in compared of the WOT and OT, the WOT had a good corrosion protection and a significant advantage of preventing abnormal rapid growth of oxide skin, so WOT was the best choice for feed-water treatment.
Analysis of Fault Characteristics and Reservoir Forming Control in Middle Fault Depression Belt in Hailer-Tamtsag Basin
Authors: Sun Yong He , Kang Lin , Yang Feng Xiang , Li Xue Song
Published: December 2012

In order to reveal in middle fault depression belt of Hailer-Tamtsag Basin buried hill oil and gas migration and accumulation characteristics, we summarize controlling effect of fault on oil and gas migration and accumulation of buried hill, which by analysing genetic mechanism of buried hills based on fault systems formation and evolution. Research shows that three types of fault system in Hailer-Tamtsag Basin: early stretched fault system(Type I), early stretched middle tensile shearing fault system(Type I-II), early stretched middle tensile shearing reverse late fault system(Type I-II-III). Type I-II and I-II-III are stretching by NW tensional stress in Nantun group ,which afford tectonic framework for syngenesis buried hill and epigenetic buried hill. Type I make buried hills complicated .It is also favorable to ancient geomorphological buried hill in the fault less affected zones. Although they formed cracks dense zone easier, Type I-II and I-II-III fault system damage the reservoir which is not conducive to " hydrocarbon-supplying window " formation; Type I fault system have less promotion on the development of the buried hill reservoir, while it is conducive to hydrocarbon accumulation as the block boundary in buried hill hydrocarbon. Fault formed source rocks two kinds for hydrocarbon mode: unidirectional and bidirectional, which formed two reservoir-forming pattern: Unidirectional transportation hydrocarbon of weathering crust or hydrocarbon of fracture damage zones and bidirectional transportation hydrocarbon of weathering crust or hydrocarbon of fracture damage zones.
Study on Assessing Method of Stress History of Marine Soft Clay
Authors: Di Sheng Jie , Shan Zhi Gang , Wang Ming Yuan
Published: December 2012

The vane shear test (VST) is comprehensively analyzed by means of empirical method, which on soft ground of one offshore foundation engineering project in Jiangsu province of China. The methods of judgment of soil stress history are summarized. Based on the shear strength of soft clay, consolidation state of the soft clay is obtained. The conclusion shows that it belongs to slight over-consolidation state. In the meantime, the two evaluation methods are comparatively analyzed. In the depth more than 5 m, the curves of over consolidation ratio (OCR) of two methods show a good consistency. The methods and applications can provide useful reference for engineers.
Research on Dehydrogenation and Sintering Process of Titanium Hydride for Manufacture Titanium and Titanium Alloy
Authors: Zhang Jia Min , Yi Jian Hong , Gan Guo You , Yan Ji Kang , Du Jing Hong , Liu Yi Chun
Published: December 2012

In this paper, unlike the traditional powder metallurgy technology, the titanium hydride is directly used as the starting material to manufacture the titanium and titanium alloy. Thermogravimetric and dilatometric techniques are performed to study the dehydrogenation and shrinkage of TiH2 powders with different particle sizes. The process factors such as the sintering temperature, the sintering time, the heating rate, the compaction density, the compaction methods, and the alloy system, would affect the sintering densification of TiH2 powders and TiH2-Al-V alloy powder. The results shown that the dehydrogenation temperature of the starting and ending of the ball milling TiH2 is lower than that of the coarse TiH2 powders, the finer the TiH2 powder, the lower the temperature. The densification of TiH2 powders is easy due to the combination of dehydrogenation and shrinkage of α-Ti in one process, which creates the fresh dehydrided titanium uniform during sintering, thus leads to rapid densification and very high sintering relative density, higher than 99%. In contrast, it is difficult to achieve a full densification of TiH2-Al-V alloy powder during sintering, which requires dissolution of alloy elements during sintering above its beta transformation temperature. The sintered microstructure of Ti-6Al-4V shows the typical lamellar shaped α+β characteristics, with a uniform alloy element distribution.
Advances in Research of Zinc-Based Sorbent for Coal Gas Desulfurization
Authors: Song Chao Ling , Yu Jiang Long , Yin Feng Kui , Dou Jin Xiao
Published: December 2012

This paper provides a comprehensive overview of the R&D status and advances of the cleaning of hydrogen sulfide from coal gas streams using zinc-based sorbents including ZnO, ZnFe2O4, Zn2TiO4 and supported zinc-based sorbents. The characteristics of single oxides sorbents, complex zinc-base sorbents and supported zinc-based sorbents are compared, including the preparation processes,desulfurization behavior and desulfurization precision, etc. Supported zinc-based sorbents are regarded as prospective sorbents in industrial applications due to their better desulfuization precision and regeneration properties. Char supported zinc-based sorbents have good performance during desulfurization at medium temperatures.
Mesoporous Aerogels Synthesized with an Ionic Liquid [Hmim]Br as Template via Ambient Pressure Drying
Authors: Dai Hong Yi , Yan Hai Rui , Yu Chun Ling , Fu Ying Huan , Shao Guo Lin , Ning Li Yuan , Wu Xu Yang
Published: December 2012

Mesoporous silica aerogels with a high surface area and narrow pore size distribution were prepared from tetraethylorthosilicate (TEOS) precursor at ambient pressure by using a water miscible ionic liquid (IL) [Hmim]Br as a template. The aerogels were characterized by scanning electron microscopy (SEM) and N2 gas adsorption-desorption isotherms (BET and BJH analyses), and the effect of the IL on gel structure was also studied. The results showed that IL plays an important role in regulating the nanostructure of the aerogels, in particular, pore sizes and their distribution. By increasing the IL/Si molar ratio from 4 to 7, the specific surface area of the resultant aerogel increased from 822.38 to 992.43 m2/g, while the pore volume decreased from 1.568 to 1.031 cm3/g. More importantly, the pore size distribution became narrower with minimum average pore radius centralized at 20 nm as the IL/Si molar ratio of 7. Compared with other IL templating methods previously reported, notable attributes of this method include gelation at a much wider range of the IL/Si molar ratios (up to 7) and the formation of homogeneous porous structure whose size can be up to meso-scale (2 nm - 50 nm).
Optimization Research of the Aircraft Deicing Problem
Authors: Wu Meng Li , Li Lu Yao , Chen Bin
Published: December 2012

The theory of aircraft ground deicing processes is studied in this paper. Aiming at the civil aviation airport with a number of parking bays, a model considering multiple constraints is presented. According to the first come first service scheduling, simulation is carried out to get the relationship between the quantity of flights and the delay time, based on the flight plan data of Beijing Capital International Airport. Then, taking into account the cooperation of the airports with airlines, besides the competition between airline companies, priority comparison method is proposed to optimize the airline flight deicing scheme. The result of research shows that the optimization method can effectively reduce the delay time.
The Research of Automatic Monitoring Devices for Circulating Cooling Water
Authors: Sun Mo Jie , Liu Song , Wei Xing Shuang
Published: December 2012

With the rapid development of China's national economy, high capacity, high parameter unit has become the main force of China's power industry. Because of the scarcity of water, Country demand repeatedly saving, energy conservation, efficiency for circulating cooling water applications.
The Research Progress of High Efficiency Energy-Saving Grinding Equipment
Authors: Yan Fu Kun , Xiao Qing Fei
Published: December 2012

This paper explains some deficiencies of grinding equipment in our country at present,introduces the angular screw lining plate and trench lining plate from mill lining plate ,also their application effects; and introduces the static and dynamic pressure bearing and the center drive energy-saving mode from the transmission part, on the basis of which take a brief introduction of a new device and its application status, then the development trend in the future is prospected.
Design of a New Drainpipe Robot Based on STM32
Authors: Cheng Hua , Zhao De An , Zhang Jun
Published: December 2012

Today in the world, most of robots for drainage pipe only are used for in-pipe inspection. At the same time, they are not easy to control and with high price. According to this phenomenon, put forward a design of a drainpipe robot which can realize the function of inspection, cleanout and draining. Have done the research for the overall design, especially on the robot control system based on stm32. The design is a novelty with several functions, brings a new project to the development and research of drainpipe robot.
On-Line Detection Method for Automobile Frame Side Rail Process Holes
Authors: Men Yu Zhuo , Yu Hai Bo , Wang Hua , Gao Jin Gang , Pan Xin
Published: December 2012

On-line detection method for automobile frame side rail process holes is proposed in this articled. It is achieved by virtue of machine vision technology detection method. Many images captured by CCD camera are processed and analyzed to finally complete the automatic detection of automobile chassis frame process holes. Machine vision technology is applied to achieve the on-line detection of machining quality of frame side rail mounting holes. The developed detection system prototype has very high detection accuracy.
Kinematic Analysis and Optimization Design of Vehicle Suspension System
Authors: Men Yu Zhuo , Yu Hai Bo
Published: December 2012

In order to study on the kinematic characteristic of a light vehicle suspension system, the kinematic simulation model of the whole double-wishbone independent suspension was built using ADAMS software. In order to reflect the actual running condition of the vehicle, the random excitation of the test platforms of the left and right wheels were created, respectively. The variable regularity of the kinematic characteristic parameters was uncovered in the process of the suspension motion. The irrationality of the suspension guiding mechanism design was pointed out through simulation and analysis, and the existent problems of the guiding mechanism were optimized and calculated. The results show that there is small variation of the front wheel orientation parameters before and after optimization, and all of them are within the design requirement ranges. The variation of the WCD (wheel center distance) and FWSS (front wheel sideways slippage) are bigger, and still within the ideal ranges after optimization. The anticipated optimization goal is achieved, and an important basis is provided for the improving design of the light vehicle suspension.
Study of Secondary Flows’ Impact on Separation Performance of Cyclone Separator
Authors: Zhang Zhen Wei , Zhang Su Juan , Leng Jie , Yu Ying
Published: December 2012

Distributing conditions of velocity, pressure and pressure loss of the airflow were displayed by conducting finite element analysis on cyclone separator, and the formation of the secondary flow and the relationship between secondary flow and particle separating were analyzed, these work lead to conclusions that the secondary flow has direct relationship with the turbulence intensity in cyclone separator, the larger the turbulence intensity is, the easier the secondary flow is brought out, and that the secondary flow will cause the phenomena of short circuit, back mixing and re-entrainment, which will involve the material into the exhaust pipe and exert bad influence on the separating effect.
Supply Chain Management in Domestic Mobile Phone Industry under Mass Customization
Authors: Liu Li
Published: December 2012

The detailing of professional division of mobile phone components and parts lays a solid foundation to implement mass customization manufacturing mode in real mobile phone industry. Under mass customization, effective operation of the supply chain cannot do without advanced information system as well as progressive supply chain management methods and technology application. This article states the method of mass customization in mobile phone enterprises mainly from aspects like customer relation management, differentiation delay strategy, products structure and supply chain management in the stage of process development design, logistics management of mobile phones and supply chain coordination management, etc.
Ascertainment of Machine Tool Adjustment and Processing Parameters for Spiral Bevel Gears in a Heavy Vehicle Main Driving System
Authors: Ding Yuan , Li Xia , Yang Yong Ji , Ma Shi Qiang , Pan Yue Xue
Published: December 2012

Based on partial conjugation principle, revised machine tool adjustment parameters and processing parameters which can make big gear and small gear be in points conjugation meshing progress are obtained after the cutting tooth plan and rough gear parameters of spiral bevel gears in a heavy vehicle main driving system were determined. Ideal gear contact spots are gained by gear contact area rolling experiment, which show that calculation theory and methods above-described are practicable and effective for improving meshing quality of spiral bevel gears in heavy vehicle main driving system.
SIP Protocol in the IMS Network and Simulation
Authors: Fan Ya Qin , Yu Peng Jun , Liu Mei Lin
Published: December 2012

IP Multimedia Subsystem IMS is the core technology of next generation networks can provide real-time IP multimedia services and VoIP services through IMS, but IMS is not perfect, of which there are still some problems. IMS in real-time business a higher demand for mobility support, voice and video data usually use real-time transport protocol RTP to transfer user data protocol over UDP, requiring low transmission delay, seamless switching, as well as higher bandwidth utilization. In this paper, the IMS-related issues, the IMS network protocol.The SIP protocol simulation. Simulation results show that more of the nodes, the network send and receive packets faster, the results of this paper is the study of the IMS network, the actual reference value
Researches on Function Optimization Problems Based on Chaotic Immune Genetic Algorithms
Authors: Che Yong Gang , Xiao Chun Yu , Kang Chao Hai , Li Ying Ying , Gong Li Ying
Published: December 2012

To solve the primary problems in genetic algorithms, such as slow convergence speed, poor local searching capability and easy prematurity, the immune mechanism is introduced into the genetic algorithm, and thus population diversity is maintained better, and the phenomena of premature convergence and oscillation are reduced. In order to compensate the defects of immune genetic algorithm, the Hénon chaotic map, which is introduced on the above basis, makes the generated initial population uniformly distributed in the solution space, eventually, the defect of data redundancy is reduced and the quality of evolution is improved. The proposed chaotic immune genetic algorithm is used to optimize the complex functions, and there is an analysis compared with the genetic algorithm and the immune genetic algorithm, the feasibility and effectiveness of the proposed algorithm are proved from the perspective of simulation experiments.
Application of Stochastic Resonance in Digital Image Filtering
Authors: Zhang Yu Xin , Liu Yu , Duan Hui Da
Published: December 2012

The principle, ideas, procedures and optimization problems of the filtering algorithm were presented in the article. First, the filtering algorithm procedures of aerial image based on stochastic resonance theory was introduced, then the curve of noise strength and peak signal to noise ratio (PSNR) was analyzed, a golden-section fast search algorithm was proposed and discussed as well to find out the maximum point of PSNR in the process of filtering. Experimental results indicate that the filtering method in this article is superior to other methods on high noise strength aerial image, and the stability and robustness are better than other methods . The multiples of filtering image’s PSNR is 1.2~1.4 times than other methods.
The Comprehensive Safety Evaluation Method on the Safety Situation of Iron Mine Based on AHP and Extension Theory
Authors: Wang Feng , Cui Tie Jun
Published: December 2012

To solve the qualitative and quantitative problems in safety evaluation, we employ the professional knowledge of extension engineering method, analytic hierarchy process (AHP) and relevant iron mine safety evaluation index system, combined with extension engineering method and regional safety assessment to establish the matter-element model of safety evaluation analysis on iron mine safety based on extension theory. Based on the safety data of iron mines, we further analyze the influential factors of the regional safety. Firstly, these influential factors are divided into two levels based on AHP, and then the weights of two layers index are calculated respectively. Secondly, with scores measured by experts, the safety level of the influencing factors is determined based on extension theory. Finally, given the weight and safety level of the influence factors mentioned above, the safety conditions of iron mine is determined accordingly. The results of the study show that this analysis based on AHP-the extension engineering method absorb the essence of the traditional evaluation method, and minimize the defects of the various methods. The method can accurately evaluate safety level of iron mine, measure the distance between the actual safety level and adjacent safety level, and better reflect iron mine safety situation. It is of certain significance for the classification of safety situation. The method also has a broad application prospects in other engineering fields.
Evaluating the Ways of Electricity Payments Based on the Analytic Network Process (ANP)
Authors: Zhang Ting , Jiang Yuan , Liu Yang Yang , Wu Yue , Ge Xin Li , Liu Zhi Yan
Published: December 2012

Under the background of a larger marketing system in the State Grid Corporation of China, it is very important to change the system of electric bills collection and erect more convenient means for the users to pay the electric bills. This paper researches the way to pay the electric bills from the users’ side and establishes the evaluation model by the analytic network process (ANP). Finally, the best ways to pay electric bill can be sorted out. The 7 ways of electric bills payment in a city of China is used as a case to demonstrate the applicable of the model. Consequently the way of electric bills automatically deducted by banks is welcomed.
Statistical Inference for a Kind of Nonlinear Regression Model
Authors: Jiang Yu Ying , Zhang Yong Ming
Published: December 2012

As we all know, statistical inference of linear models has been a hot topic of statistical and econometric research. However, in many practical problems, the variable of interest and covariates are often nonlinear relationship. The performance of the statistical inference using linear models model can be very poor. In this paper, the statistical inference of a nonlinear regression model under some additional restricted conditions is investigated. The restricted estimator for the unknown parameter is proposed. Under some mild conditions, the asymptotic normality of the proposed estimator is established on the basis of Lagrange multiplier and hence can be used to construct the asymptotic confidence region of the regression parameter.
Research in Multidisciplinary Collaborative Optimization Base on Symmetric Fuzzy Satisfaction
Authors: Li Nan , Song Bao Wei
Published: December 2012

Multidisciplinary collaborative optimization (CO) is a multi-level optimization algorithm, which include system-level and academic level. Because these are many complications in Engineering, it will exist the fuzzy in Discipline-level optimization devices. If the impact of discipline-level ambiguity was ignored, it will lead to some big errors in the system optimization. In order to solve this problem, this paper introduced the optimal fuzzy satisfaction into multidisciplinary collaborative optimization design, and made it as optimal targets of sub-discipline optimization devices. Then a method of multidisciplinary collaborative optimization base on Fuzzy Satisfaction was get., which can solve the fuzzy problem in multidisciplinary collaborative optimization. Meanwhile this paper used this method in multidisciplinary collaborative optimization of torpedo, and compared the results that was get by this method with the results which was get by the method that did not base on the fuzzy satisfaction, finally get the conclusion that the method is fit to Multidisciplinary collaborative optimization of torpedo.
State Estimation and SCADA System Data Cooperation Problem Analysis
Authors: Liu Fang , Bao Hai
Published: December 2012

Steady-state measurement value is the calculation premise of state estimation. However, power grid operates more often under dynamic state in actual practice. Thus, applying measured data from SCADA in state estimation directly lead to the incorrect and inaccurate calculation result. Based on the premise of state estimation calculation, the online electrical measurements and sampling methods are analyzed, and the deviation between real electrical values and sampling data is calculated. The cooperation problem between SCADA data and state estimation is proved using MATLAB/Simulink Software.
Optimal Control of the Seismic Responses of High-Rise Structure Using Instantaneous Optimal and Iterative Learning Control
Authors: Tong Shao Wei , Tang Huai Ping
Published: December 2012

By combining instantaneous optimal control (IOC) and iterative learning control (ILC) , a new hybrid control strategy called ILC_IOC was established. The new hybrid control strategy was derived from the error model of state-space equation and the instantaneous quadratic form of performance function. During the period of control, control forces ware first obtained from traditional instantaneous optimal control, and then, modified by the iterative learning control, during the process of modifying, the amplitudes of control forces were modified. The Benchmark II model was selected as the model for simulating, and the N-S component of the 1940 El wave was selected as the input load. Results of the numerical simulation indicate that, comparing with traditional instantaneous optimal control, the new hybrid control strategy shows to be more effective.
Reactive Power Optimization Based on CAGA Algorithm
Authors: Chen Li Jun , Hai Ran Ran , Zhang Ya Hong , Xu Gang Gang
Published: December 2012

Reactive power optimization is a typical high-dimensional, nonlinear, discontinuous problem. Traditional Genetic algorithm(GA) exists precocious phenomenon and is easy to be trapped in local minima. To overcome this shortcoming, this article will introduce cloud model into Adaptive Genetic Algorithm (AGA), adaptively adjust crossover and mutation probability according to the X-condition cloud generator to use the randomness and stable tendency of droplets in cloud model. The article proposes the cloud adaptive genetic algorithm(CAGA) ,according to the theory, which probability values have both stability and randomness, so, the algorithm have both rapidity and population diversity. Considering minimum network loss as the objective function, make the simulation in standard IEEE 14 node system. The results show that the improved CAGA can achieve a better global optimal solution compared with GA and AGA.
Research on Route Protocol and Architecture for WSN Based on IPv6
Authors: Lu Rui Ting , Li Xiang Zhen , Wang Jia Hui , Sun Feng Jie
Published: December 2012

WSN based on IPv6 is a new network integrated IPv6 and WSN. The related technologies of WSN based on IPv6 was researched, and an architecture of WSN based on IPv6 was proposed according to 6LoWPAN protocol in this article. Efficient and stable route protocol is a main focus to ensure network performance. Refer to on-demand routing protocol DSR, a Load-Balancing route protocol for WSN based on IPv6 was designed. An implementation of this protocol was programmed in NS2, and its simulation results were analyzed. The experimental result shows that this protocol could effectively reduce end-to-end delay and routing overhead, improving the network performance.
Research on Prevention and Control of Chinese Agricultural Ecological Environment Pollution to Ensure Food Safety
Authors: Dai Wen Bin
Published: December 2012

Strengthening the agricultural ecological environmental protection and intensifying the source management of food safety is an important and urgent t task in today's social development process. The article elaborates how agricultural ecological environment pollution affects food safety via air pollution, water pollution and soil pollution. According to relevant statistics, the article describes the current situations of Chinese agricultural ecological environment suffering from fertilizer pollution, pesticide contamination and heavy metals pollution. To solve the problems Chinese government are facing in agricultural ecological environmental pollution prevention and control, the article introduces countermeasures on prevention and control of Chinese agricultural ecological environment pollution to ensure food safety.
The Physical Properties and their Prediction of Volcanic Reservoirs in Luxi Area of Junggar Basin, China
Authors: Sun Zhong Chun , Chen Zhong Hong , Kong Yu Hua , Liu Wen , Yang Men Yun
Published: December 2012

The physical properties of reservoirs determine the ability on accumulating hydrocarbon. As one of the unconventional hydrocarbon reservoirs, the volcanics own the different characteristics from the clastic rocks on physical properties. The study on the relationship between physical and electrical properties of deep volcanic reservoirs was conducted, using the Luxi area of Junggar basin as an example. By our study, some conclusions have been made: The heterogeneity of physical properties is strong in volcanic rocks whose porosity and permeability vary in different lithology and lithofacies; different rocks in a same well have various values of porosity and permeability, and a certain type of volcanic rock has different values of porosity and permeability in diverse wells. According to measured data, the value of porosity an permeability in erupting and effusive facies area are high, while in volcanic channel and extrusive facies as well as volcanic sedimentation facies are low. Unlike the clastic rocks, in volcanic rocks there is little relationship between porosity and permeability and all of them do not have close relationship to the buried depth. Different electrical responses have different relationship with the porosity of one certain lithology, while one certain electrical property has different responses for the porosities of different lithologies; comparatively speaking, the porosities of tuffites, breccia correlate intensively with GR, SP and AC, so these electrical parameters can be utilized to predict the physical properties. This study illustrated that the relativities between porosity and GR, AC, and SP are Por=-0.6189×GR+52.691 (R2=0.9311), Por =-0.3771×AC + 34.5 (R2=0.8876) and Por = 2.1458×SP + 79.404 (R2=0.8236).
Discussion on Geological and Geochemical Methods for Prospecting at Surrounding of Crisis Mines
Authors: Meng Xian Fu
Published: December 2012

As the supply situation of the mineral resources is gradually worse, the subject of resources crisis mines is becoming a hot topic at domestic related research fields. Prospecting potentiality of crisis mines is an enormous. But how to find new deposits in deep and surrounding of crisis mines by using the data of geology, deposits exploration and adopting resonable prediction manner is a very urgent problem which confronts with mining industry. Author analyze the regional metallogenic geological setting, predicate and evaluate surrounding favorable region by similarity analogy principle and research data of geochemistry which obtain from mining. This may provide theoretical guidance and scientific basis to other crises mines deep and surrounding resources exploration.
Accumulation Conditions of Hydrocarbon Generated by Marine Source Rock in Southern Depression of Southern Yellow Sea Basin
Authors: Wang Ming Jian , Zhang Xun Hua
Published: December 2012

The energy situation of China has been very tough. Our country’s oil is heavily dependent on imports and lack of oil and gas reserve. The shortage of oil and gas resource has become an important factor which restricts our national economy health and sustainable development. Guided by the theory of petroleum system, we analyzed the Mesozoic-Palaeozoic marine strata hydrocarbon accumulation elements and conditions of the sourthern depression in Southern Yellow Sea Basin and concluded the hydrocarbon accumulation pattern in order to find the reserving oil and gas. There are seven source-reservoir-cap assemblages. Different tectonic units experienced different tectonic evolution history. The source rock of Lower Palaeozoic, Upper Palaeozoic and Lower Triassic have experienced four, three and two hydrocarbon generation stages separately in the depression. But the source rock of Lower Palaeozoic and Upper Palaeozoic in the salient have only experienced two and one hydrocarbon generation stages separately. Hydrocarbon generated by Mesozoic-Palaeozoic source rock migrated to the traps by fault, crack and unconformity. Lithologic trap, broad anticlinal trap and fault-lithologic trap are the main types in the study area. By the analysis of Mesozoic-Palaeozoic marine hydrocarbon accumulation in the sourthern depresssion, we concluded two accumulation patterns which are the original lithologic reservoir in the Mesozoic-Palaeozoic marine strata and fault-lithologic reservoir in the Mesozoic-Cenozoic terrestrial strata. These results will help to predict the oil and gas resources.
The Age and Origin of the Jinfosi Biotite Granite, North Qilian, NW China: Evidence from U–Pb Zircon Age Data, Geochemistry, and Nd–Sr–Pb Isotopes
Authors: Sun Xing Li , Liu Xiao Huang , Liu Jiu Feng , Sun Bai Nian
Published: December 2012

New geochemistry, Nd–Sr–Pb isotopes and U–Pb zircon data from the Jinfosi Biotite granite provide important constraints on the evolution of the crust in this part of the North Qilian, NW China. The Jinfosi Biotite granite have the following properties: SiO2 > 65%, A/CNK(Molar Al2O3/(CaO + Na2O + K2O) ratios generally > 1.1, Na2O generally < 3.2%, Sm/Nd values between 0.17 and 0.27, and high Rb/Sr values. A chondrite-normalized rare earth element (REE) pattern shows negative Eu anomalies and depletion in heavy REEs. 143Nd/144Nd values are relatively low, and values of εNd(t) and εSr(t) are indicative of continental lithosphere. (87Sr/86Sr)i values are between 0.69952 and 0.70962, corresponding to continental crust mixed with a minor component of mantle material. Values of 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb are 18.9–19.0, 15.59–15.85, and 38.00–and 39.00, respectively, corresponding to S-type collision-related granites. The Jinfosi Biotite granite yield a SHRIMP zircon U–Pb age of 416.7 ± 4.1 Ma. R1–R2 and Rb versus (Yb + Nb) discrimination diagrams indicate that the Jinfosi biotite granite was produced during continental collision following closure of the paleo-North Qilian Ocean.
Optimal Selection of Construction Schemes Based on Simplified ELECTRE
Authors: Bian Jing Mei , Bai Quan
Published: December 2012

With the purpose of finding effective method in construction schemes decision-making and improving productivity level of construction enterprises, the application of simplified ELECTRE method in optimal selection of construction schemes was studied in this paper. The calculation process and main steps of simplified ELECTRE for optimal selection of construction schemes were presented here. An example of construction scheme optimal selection for shear wall template was analyzed, and the calculation progress was programmed on the platform of MATLAB 7.0. The result analysis shows that simplified ELECTRE can supply satisfactory preferential order of alternatives considering comprehensive influence of many factors. It has simple and clear sorting principle, furthermore, it is very suitable to be calculated in program, and the result is accurate and reliable. Simplified ELECTRE method is proved to be good to solve the problem of optimal selection of construction schemes.
Research on Fracture Characteristics of the Raw Coal Containing Gas under Shear Loading
Authors: Peng Shou Jian , Ding Yong Ming , Lu Wei Dong
Published: December 2012

By using the self-developed meso shear test equipment for coal or rock containing gas, non-restrictive direct shear tests under the gas pressure of 0 MPa, 0.5 MPa, 1.0 MPa and 2.0 MPa were carried out. Based on the shear stress-shear stain curves and the meso-evolution laws of the shear fracture cracks, Fracture characteristics of the raw coal containing gas under shear loading was analyzed. The results show that: i) the gas pressure can hasten the growth rate of the fractural crack in raw coal containing gas, and accelerate its shear fracture process; ii) the shear fracture process of the raw coal containing gas experiences five stages; iii) the shear breaking process of coal results in two cracks: shear crack and tensile crack, and the cracks first appeared in the shear plane at both ends, then extension to the central until shear fracture surface formed.
Demand Analysis and Scheme Design of Coal Mine Safety Monitoring System
Authors: Zhang Xin , Feng Lei , Du Bo , Xiao Zhen Dong
Published: December 2012

Coal mine is important and basic industries in the country, and it is very important to establish a sound, reliable coal mine safety monitoring system for the safety production of coal mine. The demand analysis was made for the development of coal mine safety monitoring system. It contains to build up the layout model of the standard coal mine underground production environment and set all kinds of underground transducers especially methane transducer. On this basis, the general design scheme of coal mine safety monitoring system was determined. Demand analysis and scheme design provided for coal mine safety monitoring system can meet the needs of practical application and establish the foundation for the subsequent system development.
The Research on Technology for Increasing the Permeability of Coal Seam by Impacting with High-Energy Air
Authors: Gao Kun , Wang Ji Ren , Jia Bao Shan
Published: December 2012

The permeability of coal is very important parameter on gas extraction, but it is difficult to get good effect by conventional method on low air permeability coal seam. Based on above reason, we put forward the research on technology for increasing the permeability of coal seam by impacting with high energy air, as for showing the effect we make experiment in Xin’an mine. The data display it increased to 155.96% of single hole maximum discharge, the average is 112.73%. The best result in study is the position of 2.5m far from experimental borehole, and the flow increased to 179.69%. All the data display that it can reach well result of increasing the permeability of coal seam by impacting with high energy air.
Application of Self-Organizing Neural Network Method in Logging Sedimentary Microfacies Identification
Authors: Li Wen Bo , Yu Yun Liang , Wang Jian Qiang , Bai Ye , Wang Xin
Published: December 2012

Studing the identification methods of sedimentary microfacies by the implement of self-organizing neural network model. Picking up the geometrical characteristic parameters and image characteristic parameters of the logging curves. Establishing the relationship of sedimentary microfacies patterns and well logging curves shapes by characteristic parameters. Developing the Sedimentary microfacies patterns identification system and applying it to 1000 wells of the southern area of Daqing Changyuan, the recognition rate can reach 90%, it can prove the validity of the method.
The Coal Mine Underground Video Acquisition and Application System Research Based on ARM
Authors: Zhang Ming Min , Li Peng Hui , Ye Tao , Hu Liu
Published: December 2012

With the rapid development of ARM-core chips and the popularity of USB camera, composing of real-time monitoring system with these two together becoming a trend, meantime the open-source Linux operating system is just as a bridge between the two. This paper studies on ARM9 nuclear processor S3C2440 for CPU, Linux as embedded system , by using USB camera for image acquisition hardware and software implementation process，and ultimately composing of a video acquisition and displaying system for coal mine ,and this system is applied in underground coal mine belt conveyor belt of longitudinal tear detection .
Study on Parameters of Support for Control of Roof Fall and Rib Spalling in Large Fully Mechanized Top Coal Caving End Face
Authors: He Fu Lian , Wang Xiao Ming , Zhang De Quan , He Shang Sen
Published: December 2012

Key factors affecting the control of roof fall and rib spalling are identified relying on the statistics for characteristics of roof fall and rib spalling distribution, and the regression analysis of the relationships of roof fall and rib spalling to support parameters by measuring actual ground pressures. The effect of support in controlling roof fall and rib spalling is analyzed by setting up a caving arch mechanical model of cataclastic coal and rock mass on fully mechanized caving face, and the key parameters of support are also determined using numerical simulation.
Prediction of Mine Gas Emission Based on Time Series Analysis
Authors: Meng Hai Dong , Zang Dong Yuan , Song Yu Chen
Published: December 2012

Because the variation of mine gas concentration is influenced by various factors, so it’s impossible for traditional prediction methods of mine gas emission to include all the factors. To solve the problem, the paper proposed a prediction method of mine gas emission based on AR model of time series analysis. The experiment results indicated that the method can predict mine gas emission accurately.
Development Rule of Full-Mechanized Caving Mining Water-Flowing Fracture Zone in Yanzhou Mining Area
Authors: Fan Zhen Li , Hu Bing Nan
Published: December 2012

The heights of fully-mechanized mining water-flowing fracture zone of Yanzhou mining area were measured by borehole simple hydrology method .In order to confirm the influence degree of the geology and mining factors to the damage height of overburden rock , the paper analyses the measured data by using grey relation analysis theory, and concludes that the face span, mining thickness and mining depth are main influence factors to the height of the water-flowing fracture zone. On this basis, the paper reveals the general rules of fully-mechanized caving mining overburden rock destruction with the on conditions of gentle dip, thick coal seam and hard and medium hard roof by using regression analysis method.
Tectonic Movement and Sea-Level Rise
Authors: Zhong Fu Ping , Kou Wei Feng , Bian Qiang
Published: December 2012

Recently, many strong magnitude earthquakes and volcanoes have taken place on earth, which reveals that the Earth perhaps in its active period of tectonic movement currently. The heat flow will increase during the active period of tectonic movement, and it can provide meltwater to lubricate the basal layer of the West Antarctic Ice Sheet, which can leads to the sea-level rise.