bluuebunny/crossref_metadata_2025 huggingface dataset:
Verification and Analysis of Conversion Factor for Pavement Damage Ratio Based on Bayesian Method
Authors: Li Yi Bo , Qiu Xin , Wang Feng , Peng Bin
Published: March 2013

To improve the Pavement Damage Ratio Model of Mississippi State for predicting pavement condition effectively, the conversion factors of this model should be modified. In this paper, based on the Bayesian Method, verification and analysis of the conversion factors for the original DR Model are presented. The modified conversion factors turn out to match better with the actual situation nowadays and predict the pavement condition with higher accuracy. The results of this paper show that the original model deviates a lot from the expert evaluation, and after the modification, the deviation is reduced. The modification procedure can be continued in use of the Bayesian Method.
Research on the Anchor of Inside-Soil-Opened Umbrella Type & Its Jacking Force
Authors: Xia Hong Bing , Zhang Yi Jun , Li Hui , Yan Bao
Published: March 2013

The existing soil anchor of steel strand encapsulated by cement has many disadvantages such as longer anchorage length, more construction process and not timely bearing load. Contrary to the existing soil anchor, the anchor of inside-soil-opened umbrella type has lots of advantages: simple structure, convenient construction, high bearing capacity, timely anchoring soil. This paper has analyzed the principle of anchorage and jacking force of the soil anchor, also given the estimated equation of the jacking force. The result of experiment shows that the change of the dragging force is not obvious with the increase of the jacking distance, and the frictional force performs linearly with the increase of the jacking distance. So the estimated value of the jacking force anatomizes the practical value.
Finite Element Analysis on the Crack Width and Deflection of a Local Corroded Reinforced Concrete Beam
Authors: Shi Qi Yin , Zhao Chun , Wang Chun , Li Qing
Published: March 2013

In this paper, the crack width and deflection of a local corroded reinforced concrete beam is investigated. The influence of the rebar corrosion on a concrete beam is analyzed first. Based on the constitutive relationship of the corroded reinforced concrete, the corroded reinforced concrete is regarded as a bond-slip composite beam which is comprised of corroded rebar and concrete. By using the large-scale finite element software ANSYS, a separate reinforced concrete beam model is developed after selecting the reasonable element. By using the proposed model, the positions of the cracks are determined. Moreover, the cracks width and the deflection of the beam at the corroded segment are calculated through using formula and extracting the results data from ANSYS. At last, the results by the standard design of concrete structures (GB50010-2010) and EN1992-1-1:2004[1] are compared through the list, which show the crack width and deflection of the local corroded reinforced concrete beams calculated by ANSYS is feasible.
The Conversion Design of Emergency Facilities in Disaster Mitigation Emergency Congregate Shelters
Authors: Chu Jian Yu , Wang Zheng
Published: March 2013

The integration of the facilities for recreation and disaster mitigation is the important concept to ensure “combination of peace time and disaster time” of disaster-mitigation emergency congregate shelters. Taking disasters prevention park as an example, this paper discusses the conversion designs of sheltering site and park land, waterscape and water supply for disaster prevention, woodland and fire proofing belt area, broadcast, communication, electric power and light facilities, park warehouse and the storage of material for disaster prevention, entrance and periphery configuration.
Analysis of Lianghu Local-Style Dwellings Detail Structure
Authors: Li Rui , Wang Jin Ping
Published: March 2013

Lianghu dwellings arcitechture detail structure is well-preserved. In this paper, we enumerate and analysis it, which reflect that the construction technology of traditional dwellings is elaborate and mature. Through the field surveying and mapping research, we realize the historical, cultural and artistical value of it, which has great inspiration effect to artistical design and industrial technology today.
Research on Disaster Prevention Index of Emergency Evacuation System of Urban Community
Authors: Song Bo , Cui Xiao Li , Zhang Peng
Published: March 2013

For ensuring disaster prevention function of the urban community and residents' life safety in the disaster situation，it investigated the disaster prevention situation of urban community and pointed out the existing disaster risks. Further it carried out region division of emergency evacuation system of urban community, and studied the planning requirements of evacuation road, shelter of disaster-prevention community. It researched 16 indexes to assess the emergency evacuation capacity, it will provide ideas and theory basis for the indexs selection of community disaster prevention system used for urban planning.
Simulation Analysis of Scour Impacts on the Dynamic Properties of a Bridge Structure
Authors: Li Yi Bo , Peng Bin , Zheng Wei , Gu Rong Liu , Wang Chao
Published: March 2013

Many damages of bridge are caused by scour. This paper tries to find out the relationship between the changes of dynamic properties of bridges and scour. The influence of scour on the Mississippi State Highway 33 Bridge is analyzed considering 2 factors, the scour depth and the water level. A Finite Element model is used to simulate the vibration of the bridge under scour. The results reveal the effects of scour on the dynamic properties of the bridge.
The Urbanization and Artistic Aesthetic of Rural Landscape
Authors: Xu Yan Bing
Published: March 2013

Urbanization is a necessary trend of human development. Urban landscape design, as an important means for improving people's living environment, plays a significant role in social economy, ethics and cultural heritage. Rural landscape can not only provide wider and more flexible space configuration, but also offer diverse perspectives for regional cultural heritage. The study of ecological green landscape in urbanization is beneficial to people's landscape aesthetic, the improvement of the sustainable development of landscape design in urban beautification as well as creation of harmonious and favorable modern city environment. Through discussing the artistic aesthetic of rural landscape from the perspectives of ecology, ethics and culture, this paper manages to cultivate the values and functions of rural landscape's urbanization and to provide feasible transformation plans for the environment during the process of urbanization. Creating rural environment in cities can meet people's demand of being closer to the nature and at the same time can strike out the geographical features, cultural heritage and moral ethics environment as well as bring the returning of humanity, establishment of new social order and the creation of harmonious ecological environment and ideal homes.
Ferroferric Oxide Magnetic Nanoparticles Carbon Nanotubes Nanocomposite-Based Electrochemical Sensor Applied for Detection of Bisphenol A
Authors: Yang Shu Ai , Jiang Xue , Dong Yang Jun , Zhu Ning Ning , Wang Yuan Feng
Published: March 2013

Multi-walled carbon nanotubes (MWNTs) combining with ferroferric oxide (Fe3O4) nanoparticles were used for electrochemical determination of bisphenol A (BPA). Fe3O4 nanoparticles with an average size of about 12 nm were synthesized. It was found that the Fe3O4-MWNTs nanocomposites-modified electrode could remarkably enhance the oxidation current of BPA. Chronoamperometry studies reveal that the amperometric response is rapid, stable, and offers a linear dependence over a range of BPA concentrations from 0.1 to 4 M. The proposed method can be used for evaluation of BPA in water samples. The electrochemical properties of the Fe3O4-MWNT nanocomposites are reasonably envisaged to be promising for providing a nanostructured platform in the development of electrochemical sensors or biosensors.
Anti-Icing Property of the Prepared Super-Hydrophobic Octadecyltrichlorosilane (OTS) Film by Phase Separation Method
Authors: Ge Liang , Yao Jin Yuan , Wang Hong , Ding Gui Fu
Published: March 2013

In this paper, we prepared an octadecyltrichlorosilane(OTS) super-hydrophobic film using phase separation method to demonstrate the anti-icing property of super-hydrophobic surfaces. We investigated the super-hydrophobicity of the surface in -5°C environment, as well as the icing process of water droplets on the surface which proceeded at the temperature low to -15°C. We found that the prepared OTS film retained its super-hydrophobicity in the -5°C environment by the measurement of contact angle. It was observed that the icing progress of water droplets on the super-hydrophobic surface was greatly retarded. Based on the classical heterogeneous nucleation theory, it concluded that the ice formation is directly related to the surface wettability. This research would be beneficial to the preparation of anti-icing films.
A Cataluminescence-Based Sensor for Detecting Benzene, Toluene and Xylene Vapors Utilizing the Catalytic Reduction on the Surface of Nanosized Al2O3/Pt
Authors: Wang Ni Jing , Cao Xiao An , He Rui Wen , Liu Yong Hui , Huang Yi Jun
Published: March 2013

A new gas sensor was designed based on cataluminescence (CTL) by using catalytic reduction of benzene, toluene and xylene (BTEX) on the surface of nanosized catalyst Al2O3/Pt with hydrogen as the carrier gas. The result indicated that the sensor showed strong CTL response, high selectivity and excellent durability under optimal conditions: Al2O3/Pt (1%), the temperature of 395oC, the wavelength of 425 nm and the flow rate of 270 mL/min. The detection limit (3σ) is 0.2 ppm for benzene, 0.3 ppm for toluene and xylene. Other corresponding substances such as methanol, ethanol, formaldehyde, acetaldehyde, ethylacetate, ammonia and trichloromethane had no or less interference. It is a simple and convenient sensor with good selectivity and sensitivity for detecting BTEX.
Effect of Freezing Temperature on the Microstructure of Negative Temperature Concrete
Authors: Dong Shu Hui , Feng De Cheng , Jiang Shou Heng , Zhu Wei Zhong
Published: March 2013

The pore size distribution and the microstructure of negative temperature concrete was studied with different temperature, combining with some testing methods, such as MIP and SEM. Moreover, the change of the compressive strength was also studied with different ages. In addition, the relationship between the microstructure and the macro-mechanical properties on negative temperature concrete was explored further with different freezing temperature. It indicated that the lower the early curing temperature, the looser the original structure of cement paste; the total volume of gel pore whose pore size was less than 20nm was decreasing apparently, and the compressive strength declined. When changing to standard curing, the pore size trended to be thinner, the compressive strength was increasing sharply. The concrete was cured from -5°C to standard curing, the volume of pore that was less than 200nm was equal to that of the concrete with the standard curing in the age of 28d, so was the compressive strength. However, the volume of the macro pore of the concrete curing under -10°C and -15°C was greater than the concrete curing the standard condition, the compressive strength was less.
Exploratory Study on the Development of Combination of Hotel and Apartment
Authors: Hao Jing Xiang , Liu Yuan Ping
Published: March 2013

This study examined the architectural complex of hotel and apartment through describing its status quo and development as well as summarizing its characteristics and uniqueness. The case of Shanxi Dingchen Apartment for example to explor design patterns Apartment.The design of service apartment was analyzed in detail. With comprehensive consideration of the market reality the architectural key points and the issues for further development were explored and discussed.
Highly Birefringent Extruded Elliptical-Hole Photonic Crystal Fiber
Authors: Wang Xiu Ping , He Zhong Jiao
Published: March 2013

Highly birefringent extruded elliptical-hole photonic crystal fibers (PCFs) with single defect and double defect are proposed and investigated, which are supposed to be achieved by extruding conventional triangular-lattice circular-hole PCFs. Comparative research on the birefringence and the confinement loss of the proposed PCFs with single defect and double defect is presented. Simulated results show that the proposed extruded elliptical-hole PCFs with single defect and double defect can be with high birefringence up to the order of 10-2. Confinement loss increases when the ellipticity of the air hole of the proposed PCFs increases, which nevertheless can be overcome by increasing the ring number or the area of the air holes in the fiber cladding.
Pyrolysis Products of Lignin at Different Temperature Detected by Py-GC-MS
Authors: Fu Yin Xuan , Zhu Hai Bin , Sun Yan Zhi , Chen Yong Mei , Wan Ping Yu
Published: March 2013

Pyrolyzation of lignin to aromatic compounds with small molecule weight is one of the ways to efficient utilization of lignin resource. Basing on the data of thermogravimetric scanning curve (TG-DTG) and pyrolysis-gas chromatography -mass spectrometry (Py-GC-MS), the change in the distribution of pyrolysis products at different temperature was analyzed. The results showed that lignin could produce a large number of aromatic compounds having hydroxy or methoxy groups under the conditions of anaerobic and 250-450°C, but it was not benefit to obtain useful organic compounds when pyrolyzed at elevated temperatures.
Study on Crack Tip Field of Shape Memory Alloy Board under Torsion Load
Authors: Zhou Bo , Yin Tai Yue , Xue Shi Feng
Published: March 2013

This paper focuses on the thermo-mechanical behaviors of the shape memory alloy board with a crack and under the torsion load. A stress field equation from mechanics of elasticity is used to describe the stress distribution around the crack tip in the shape memory alloy board. A martensitic phase transition equation is supposed to predict the martensitic phase transition behaviors of the field near the crack tip in the shape memory alloy board. The martensitic phase transition zones near the crack tip in the shape memory alloy board under the torsion load are numerically described based on the stress field equation and martensitic phase transition equation at various temperatures. Results show that the stress field equation and martensitic phase transition equation can predict the thermo-mechanical behaviors of the shape memory alloy board with a crack and under the torsion load effectively.
The Study of Recombinant Bamboo Material for Modern Furniture Processing
Authors: Shi Di , Wang Feng Hu
Published: March 2013

This paper explored the processing performance and problems of modern furniture which are made of recombinant bamboo. Based on in-depth interview investigation method, this paper was summarized the processing problems and the influence on processing efficiency, subsequent processing and the final product. By analyzing cause of the processing problems, the paper put forward to some solutions for each one of the process.
Experimental Investigation to Boiling Heat Transfer on a Heated Surface with Multiple Impinging Jets
Authors: Ni Bin , Wen Jie , Liao Jun , Deng Hong Wu
Published: March 2013

On the condition of water multiple jet impingements, a steady-state experimental study had been conducted for boiling heat transfer in an atmospheric pressure. The jet velocity was 0.95~1.59m/s and the sub-cooling degrees of jet fluid were 30~83°C.The results revealed that increasing either jet velocity or sub-cooling degrees would promote the heat flux through heated surface, and the effect was more pronounced in partial boiling regime than fully-developed boiling regime. The heat transfer with multiple jets is enhanced due to disturbance of different impingements. With modification of the factor which related to flow distance of fluid on heated surface, correlation which is applicable to one single impinging jet boiling, can also be used to calculate critical heat flux(CHF) in boiling heat transfer with multiple impinging jets.
Design and Implementation of Lighting Management System Based on Wireless City
Authors: Zhang Jie , Cheng Shu Ying
Published: March 2013

China mobile is using 3G and WiFi to construct a everywhere wireless network ,named wireless city.The lighting management system make every city lighting unit to access a unified management platform via the wireless network, so that realize the acquisition of working state, the setting of work mode and the automatic report of fault for every lighting unit. This paper mainly introduces the lighting management node and the unified management platform. The lighting management node is responsible for adaptive wireless network access, information collection and control of the lighting unit. The unified management platform is responsible for establishing the feature database of every light unit, the man-machine operation interface and the illumination energy conservation algorithm of the whole city. In addition, this paper also discussed the cost,and efficiency, the advantages and disadvantages of the lighting management system. Finally, through the experiment estimate for an intermediate city, This system can yield high rates of energy usage, with pay back in 10 years.
Design of the Rehabilitative Apparatus for Ankle Joint Based on Parallel Mechanism and EMC2
Authors: Su Xiao , Liu Zhao Peng , Li Bin Cheng
Published: March 2013

This paper adopts parallel mechanism to replace the traditional unarmed or simple mechanical device to offer better rehabilitative training on human body ankle joint, which can medically meet the demands of proceeding various training of motor rehabilitation on the ankle joint with an excellent application prospect. The design of the control system adopts t ier to operate and control. It can meet the various training requirements of users such as slow, continuous and reciprocating motion, and it can also design personalized training program based on the users’ own condition. He open-EMC2 which makes it easy.
Study on the Modeling Method of Leaf Spring Based on Assembly Pre-Stress
Authors: Zhao Wei Yan , Wei Lang , Wang Ji Feng , Wang Jia , Gu Xue Song , Song Chuan
Published: March 2013

Using the integrated method of finite element and multi-body dynamics to build leaf spring model considering assembly pre-stress. Based on the stiffness testing platform, the simulation platform has been built. Finally , the experiment results verified the stiffness simulation results. The results show that the leaf spring model considering assembly pre-stress accords to the leaf spring property，the simulation result agrees with the experiment result and verify the accuracy of the modeling method. The results from the stiffness simulation platform and the test platform have high consistency, so the simulation platform can be used for the stiffness testing of leaf spring like this.
Modal Analysis of the High Temperature and Pneumatic Duct System of the Aircraft
Authors: Liu Juan , Jiang Yan Long , Shi Hong , Liu Zhi Li , Liu Chao , Du Yan Ping
Published: March 2013

Based on the analysis of the loads, constraints and its mechanisms applying to the duct system, a finite element model of the anti-ice system is developed and the Lanczos algorithm is used for modal analysis. Then, the first eight natural frequencies and vibration modes are obtained. The thermodynamic parameters of the gas and the kinetic parameters of the ball joint which have influence on the modal analysis are considered. The results show that the first eight order natural frequencies of the anti-ice Part1 are low and concentrated, and decrease with temperature of the gas while increase with pressure of the gas. Meanwhile, the natural frequencies increase with the stiffness and starting torque of the ball joint. This work could be helpful for reliability design of civil-aircraft ducting system.
Fault Diagnosis Expert System for Electric Power System of the Large-Scale UAVs Based on Virtual Instrument
Authors: Zhang Qin Ling , Liu Yang , Sun Peng Liang
Published: March 2013

In this paper, a test system hardware platform based on PXI bus system is proposed to test the airborne power system and typical power distribution structure of large-scale Unmanned aerial vehicles (UAV). By researching system structure, analyzing failure mode and designing fault tree, fault diagnosis expert system is designed to test the airborne power system in large-scale UAVs, where a forward reasoning expert knowledge base based on extension rule is built to solve the non-exact inference in complex system via introducing certainty factor. The experiments illustrate that the proposed system can effectively improve the intelligent level of test system and has good application prospects.
Study on a Rope Deployment Cascade Mechanism
Authors: Zhao Guo Wei , Guo Jian Gang , Chen Jian Ping , Du Shan Shan
Published: March 2013

Aimed at a rope deployment mechanism, under the hypothesis that the rope can not extend, the kinematic relationship between the rods and the multi-rigidbody geostatic model of the mechanism are established. Through the simulation and the mechanical analysis of the deployment process, the prototype deployment experiment had been done with controlling of the trace of the deployment velocity. The consequence shows the displacement, power consumption and disturbance of the mechanism accord with the expectation value of the theoretic model. It more shows our model could reflect the characteristic of this kind of mechanism, and also provides the gist for the deployment mechanism design。
Ultrasonic Imaging System Based on Virtual Instrument
Authors: Gong Yu , Hu Yue Gang , Song Guo Rong , He Cun Fu , Wu Bin
Published: March 2013

An imaging system of ultrasonic detection is presented for non-destructive testing (NDT) of complex structures by using virtual instrument technology. The control devices for C-scan as well as for imaging system are designed and manufactured. In the coarse scan mode with the scan step of 1 mm, the system can quickly give an image display of a cross section of 80 mm (L) ×60 mm (D) by one measurement. In the refined scan model, the system can show a refine image of the coin. All experiments on coin, bulk metal, and other forms of specimen verify the efficiency of the proposed method. The experimental results are accurate and reliable.
Stimulate and Eliminate Electronic Product Design Defects By Reliability Enhancement Testing
Authors: Peng Hai Xin , Kang Rui
Published: March 2013

This paper first introduces the test profile of Reliability Enhancement Testing(RET) then completed in the past three years, a large number of the implementation results of the RET test were statistically analyzed, given the distribution of the design defect, the last two design defects excitation and elimination process were be detailed explanation, and demonstrated it is exceptionally effective that the RET test inspire and eliminate electronic product design defects.
CTOD Fracture Toughness Test for Welded Joints of Steel
Authors: You Qi Yong , Yu Qi Ming
Published: March 2013

In order to ensure the enough fracture toughness for the thickness steel structure, based on DNV-OS-C401, using three point bending specimen with a center crack, the test of the typical bridge steel materials were carried out at 20°C. The CTOD value of base metal, heat affect zone and welded seam were obtained. The results show that the plastic displacement of the fracture toughness of the material plays a decisive role.
A Fast Geological Logging Technique of Underground Coal Mines Based on Photogrammetry
Authors: Li Hao , Cai Yun , Yang Biao , Wu Ming Fei
Published: March 2013

Aiming at the deficiency of current geological logging method on the coal working face, the geological logging information system for coal mines based on digital camera is developed, integrating techniques of photogrammetry, graphic and image processing, and GIS. Emphasis is mainly placed on the fast acquisition of images from coal mining and excavation faces, photographic information processing and geological logging method, thus achieving the integrated work pattern of data acquisition, computer-aided processing and logging mapping. The experiment shows that by applying the fast geological logging technique of coal mines, the logging result which is accurate, authentic, reliable and satisfies the current requirements can be obtained, improving the work efficiency and result quality, therefore providing a new means and approach for geological logging of underground coal mines.
Experimental Research on the Mechanic Behavior of Fiber Shotcrete
Authors: Zhao Tong Feng
Published: March 2013

This paper propose a new proportion of lining fiber concrete, which can overcome the drawbacks of traditional concrete such as fragile and cracks. Result showed that the concrete strength rise with cement and slag powder increasing. And drop with the increased of fly ash. Double mixing fly ash and slag powder can increase strength more obviously.
Solid Distribution in Clarifier Blanket: Numerical Modeling and Experimental Measurement
Authors: Chen Ying Ming , Zhang Li Qing
Published: March 2013

In this study, one-dimensional model for the solid distribution of flocculated suspensions in clarifier blanket is investigated by considering both up-flow velocity and hydrodynamic dispersion effects. The solution of the model equation predicts that the solid concentration will decrease remarkably along with the height of the blanket. And according to the characters of flocs, operational conditions such as up-flow flux, flocculent dosage and stirring speed affect the variation of SS. The following lab-scale experimental works with synthetic ferric-sludge flocculated with PAM confirm the numerical predictions. SS in various blanket heights under different PAM dosage was analyzed to recover the relationship between SS distribution and flocculant dosage. The results show that higher dosage of PAM will cause more dramatically SS variation due to the larger diameter of the agglomerated particles. The experiment also shows that up-flow flux has slight effect on the solid distribution inside the flocs blanket. Moreover, various stirring speeds within fitful range has no significant effect on the blanket. But too fast stirring will cause SS increasing at the top of the blanket due to the breakage of flocs.
Examination and Evaluation of WRF in Floods Season Precipitation Forecast of Jintan
Authors: Huang Ling Ling , Wang Wen Bin , Li He Ming , Qian Hong , Hao Lu
Published: March 2013

The WRF V2 model was examined and evaluated in the precipitation forecast of Jintan from May to September in 2008 using daily precipitation forecast of product information. through test and analysis to the forecast of single point precipitation. The results show that: (1) the precipitation forecast accuracy rate of each month of the single point (55%-75%) is about 10% lower than the regional (65% -85%). (2) the WRF V2 model has a moderate precipitation forecast accuracy rate (75%) for the rain or shine, moderate rain and less precipitation. However, when forecasting heavy rain and more precipitation, the model’s capability is weak. (3) the model has a higher probability of empty forecast (above 60%), and a lower probability of omission forecast. With the increase of the precipitation level, the empty rate reduced while the omission rate increased. (4) The stage precipitation forecast effect of 24h is better than 12h, namely, the forecast period is the longer, the smaller the error of the actual situations in precipitation, and the better effect of the simulation of the model.
Shangri-La County Ecological Risk Evaluation Based on RS and GIS
Authors: Li Hui , Yao Wen Jing , Su Peng Fei , Duan Qiu Chen , Li Guo Yan
Published: March 2013

The world natural heritage Three Parallel Rivers core area Shangri-la County faced all kinds of ecological risk, and ecological risk assessment contributes to the ecological risk management. Have chosen the 10 main types landscape in the area as risk receptors, and ensured main risk source in the area to be forest fires, landslides and mudslides, urban construction, tourism, and the wood used for building and life, and have carried through the exposure and hazard analysis. Based on RS and GIS, first have calculated the landscape pattern index in the area, and then used landscape pattern index constructed landscape loss index as the ecological damage index. According proposed regional ecological risk assessment index system by this paper, and overlaid the influence distribution map of main risk source, and has obtained the comprehensive ecological risk value of every unit in combination with the calculation model. The ecological risk value were classified, eventually have obtained 1990 and 2006 spatial distribution of the ecological risk assessment in Shangri-la County. The results show that high-risk area distributes banding on Jinsha river downstream river valley area and Jaintang town area. Middle-risk areas distribute mainly on middle and lower reaches Jinsha river basin in Shangri-la County. Low-risk area distributes mainly inside middle-risk area that is main production area in Shangri-la County. Weak-risk area distributes mainly relatively high elevation area such as the snow and ice land and bare land, etc. The study can be applied to the similar type high canyon landscape risk assessment research.
Comprehensive Benefit Evaluation of Rural Household Biogas Based on Fuzzy Comprehensive Evaluation Method
Authors: Ding Kun , Su You Yong , Wang Yan Xia , Zhang Wu Di
Published: March 2013

The comprehensive benefit evaluation is the key of reasonable development for the rural household biogas. The evaluation index was established according to the economic efficiency, energy efficiency, ecological benefit and social benefits and so on, which was used to resolve the problem that the effect factors of comprehensive benefit evaluation of rural household biogas are more and the quantitative evaluation can't completely be finished. The secondary mathematical model of fuzzy comprehensive evaluation for comprehensive benefit evaluation of rural household biogas was established by fuzzy mathematical method. The case calculation shows that this method is simple and practical, which not only convenient for experts to compare, selection and score, but also has the effect of quantification. It is integrated between the qualitative analysis and quantitative evaluation and the result is satisfactory through.
Description of Municipal Solid Waste Treatment
Authors: Cao Ping , Zhao Wei , Xia Wei Hong
Published: March 2013

Our country has seen a rapid growth of municipal solid waste generation, which requires proper treatment. Therefore, there’s a great need for professionals special in municipal solid waste treatment, which makes the course of Municipal Solid Waste Treatment necessary for undergraduate students majoring in Environmental Engineering. Municipal Solid Waste Treatment is one of the main special courses offered to students whose major is Environmental Engineering. Through learning of this course, the students could grasp basic treatment technologies of MSW, e.g. pulverizing, composting, incineration, pulverizing and etc. In order to keep up with solid waste treatment nowadays, it is necessary to develop this course to improve teaching effects. Firstly, this paper described the current conditions of this course. Secondly, it offers a construction plan in adjustment of the course teaching content, enrichment of teaching methods and teaching mode, preparation of test database and exercise database and suggestion of ways to increasing teaching effect of this course.
Introduction to Environmental Protection
Authors: Ye Jing , Zhao Wei , Xia Wei Hong
Published: March 2013

Introduction to Environmental Protection is a selective course offered to students whose major is not Environmental Engineering. The increasingly serious global environmental pollution requires common efforts on environmental protection and common and awareness of sustainable development. This is offered to let students interested in environmental protection know general knowledge and common technologies used in environmental quality improvement. The teaching contents and requirements are quite different from those for students majoring in Environment. Therefore, the course needs construction to develop it appropriate for students who are interested in it. Through construction of this course, the proper teaching content, ppt, CAI software, test paper data, exercise data were offered.
Comparative Research for Different Treatment Technologies of Daily Drinking Water
Authors: Li Cheng , Huang Ting Lin , He Wen Jie , Li Chen , Li Zhi Wei
Published: March 2013

The research takes Yang Liuqing water plant as an example.Compare the studies of the conventional process, coagulation pressure type membrane process, coagulation submerged membrane process between removal efficiency and water production rate.The result shows the removal efficiency of raw water turbidity and oxygen consumption had an increase of 7% and 4% than the conventional process. Disposable water production rate increased by 1%-2%.Meanwhile combined with other influence factors,a analytic hierarchy model has been established. From the two aspects of cost and benefit,compare comprehensively different process.The result shows that coagulation - immersed membrane process is more suitable drinking water treatment technology for water purification operation in water purification plant.
Study on the Adsorption Effect of Active Carbon of Various Compozitions in Polytetrahydrofuran Waste Water
Authors: Ji Xiao Na , Ai Sheng Shu , Zuo Yan , Ren Qing Kai , Bian De Jun
Published: March 2013

This paper prensents the chromatography analysis condition study on the main poluted compozotion(furaldehyde and furfuran) in polytetrahydrofuran waste water with HPLC-DAD. Given the chromatography condition is that ODS is the stationary phase, the mix liquid in which methenyl:water = 75:25 is the mobile phase, the flow is 1.00 mL•min-1, using diode array detector(detect wavelength when furaldehyde is 274 nm and furfuran in 208nm), the injection volume is 2.0µL, the column temperature is 25.0°C. This paper presents the study of treatment of polytetrahydrofuran waste water by active carbon adsorption, investigates the three conditions of the amount of active carbon, stirring time and absorption temprature, and confirms that the best absorption condition is that the amount of active carbon is 3.0g, stirring for 30min and room temprature 20°C.
Application of High-Formwork Technology in Wusong Road Passenger Station
Authors: Liu Hai Qing , Zhao Jian Jun
Published: March 2013

Combining with the construction of Wusong Road Passenger Station, the paper explores the calculation method and construction technology of high-formwork support system, proposes the construction measure requirements of formwork, introduces the technical process, accumulates the experience of high-formwork design and construction, and popularizes the application of high-formwork technology in projects, which decreases the security accidents of high formwork and provides reference for the construction of similar projects in future.
An QSAR Model for Predicting PBDEs Toxicity Established Based on Ridge Regression
Authors: Li Yu , Jiang Long , Li Xiao Li , Wen Jing Ya
Published: March 2013

In this paper, the ridge regression (RR) method was employed to establish the quantitative structure-activity relationships (QSAR) model for predicting toxicity with 15 polybrominated biphenyl ethers (PBDEs) and their 27 kinds of quantum descriptors. Quantum descriptors used to establish the QSAR model were filtrated out based on correlation analysis and variables importance of project (VIP) supported by partial least squares (PLS). The multicollinearity among the descriptors was removed during the calculation of RR method in order to ensure the validation of the final regression equation. The research showed that descriptors of Δα, αxx, αxy, αxz, αyz, βxxy and βyyy had significant effect on toxicity. The model with the simulation efficiency coefficient of 0.916 could be used to predict the toxicity of the unchecked PBDEs and as a preliminary analysis for environmental risk of organic compounds.
Influence of Superficial Gas Velocity on the Dynamic Characteristics Parameters of CFB
Authors: Li Hong Li , Li Yang Dong , Li Deng Xin
Published: March 2013

The effects of superficial gas velocity (Ug) on the dynamic characteristics parameters (electrical conductivity, local phase holdup and minimum fluidization velocity (Ugmf)) of CFB were examined by the conductivity probe method. Experimental results show effects of Ug on electrical conductivity, local phase holdups and Ugmf are rather obvious. In radial direction, the further to gas distribution board, with Ug increased bubble distribution was more uniform, radial distribution of electrical conductivity was more uniform. When Ug increases, electrical conductivity increases, distribution of it is uneven. From test hole 2 upward, electrical conductivity decreases in different axial direction. With the increase of Ug, local gas phase (g) also increases gradually, local solid phase (s) also increases gradually, and at different region, its amplitude is different. When value of Ug is small, fluidized bed belongs to the fixed bed, and with the increase of Ug, glass particles suspend slowly to fluidized state. Simultaneously, Ugmf is greatly affected by particle content and particle size.
Principal Component Regression Applied in Differential Optical Absorption Spectroscopy Measurement
Authors: Li Hong Lian , Wei Yong Jie , Chen Wen Liang
Published: March 2013

Differential optical absorption spectroscopy (DOAS) is a well-established and widely used technique for monitoring atmospheric pollution. The month performance of a DOAS system was assessed at a certain place in Tianjin University, China, where is farther away from the industrial pollution a source. Three methods were used to inverse the hourly concentrations of nitrogen dioxide (NO2), sulfur dioxide (SO2), ozone (O3). Principal component analysis (PCA) was performed to analyze the retrieving concentrations. Results were obtained for estimated temporal NO, NO2, SO2, O3 distributions over the urban atmosphere; demonstrating the capability of the principal component analysis applied in differential optical absorption spectroscopy (PCA-DOAS) technique.
Experimental Research on Performance Optimization of Solar-Air Source Heat Pump Water Heater
Authors: Zhang Zhen Ya , Wang Fang , Da Wei Feng , Guo Chao
Published: March 2013

A practical indirect expansion solar-air source heat pump water heater (IESASHPWH) is used as the measured object. Several feasible performance optimization schemes are proposed in this paper through the fundamental performance and theoretical analysis of the system structure. Then several tests are conducted to test feasibility of the schemes and effect of performance optimization of the schemes through simulating different temperature and climate conditions.
Framework, Design and Simulation of a Cyber-Physical System for Public Security Applications
Authors: Meng Wei , Zhou Zu De , Ai Qing Song , Liu Quan , Chen Ling
Published: March 2013

Cyber-physical system (CPS) is a multiple system where physical world operations are monitored and controlled by communication and computing components. This paper focuses on the framework, design and simulation of a CPS for public security applications. A framework of the CPS is presented, and its compositions are analyzed in detail. To meet the requirements of cyber-physical control, the design features of environment perception and communication are investigated. An improved task allocation method and a hybrid approach for path planning are introduced for robots coordination and optimization. Finally, the CPS is demonstrated with a case study in a public security scenario, where robots equipped with sensors cooperate with each other to extinguish fires arising due to a disaster. The simulation experiments are conducted to show the feasibility of such system.
Solar LED Street Light Control System for Wireless Sensor Networks Based on ZigBee
Authors: Tao Huan Qi , Zhang Ming
Published: March 2013

According to the solar LED lights characteristics, combined with ZigBee technology and ATmage128L microprocessor. A used in street light control system for wireless sensor network technology solutions, given the sensor nodes and ZigBee routing and the coordinator node hardware and software implementations. The applications show that the system can effectively improve the LED streetlight system reliability, safety and economy. Offers a good hardware platform for wireless sensor networks applied research.
American Universities Information Security Management System and Enlightenment
Authors: Xue Cai Ling , Wang Bao Cheng
Published: March 2013

American universities information security management system mostly established a special and independent information security management. Management system establishes the most CI0 management system, perfects the organizational structure and management content, which emphasis on differences, but the content covering were roughly the same. Enlightenment is as follows: first, we must establish independent information security management department. Second, we must be standardized, information security management content; Third, we must be installed with the professional information security work team.
Design and Implementation of a Remote-Based Journaling File System
Authors: Wang Jun , Huang Ge
Published: March 2013

The overhead brings by metadata journaling is extra space and performance degrade caused by frequent journal data flush. A journal file system based remote journal scheme was designed and implementation. The remote journal scheme removes the frequent journal I/O activities from local disk to remote server. According to the experiments in this paper, remote journal increases about 8% to 19% performance, but the penalty is light. Although remote journal does need more CPU time for network transfer, the overhead is less than 8%. And the extra network bandwidth taken by remote journal is less than 6% in metadata bound workload.
Based on False Parallax Variable Block-Size Stereo Image Coding Method
Authors: Yang Qin You , Rong Xian Wei , Wang Hai Peng
Published: March 2013

In order to improve the quality of the reconstruction of the object boundary is proposed based on false parallax variable block-size stereo image coding scheme. The scheme of the size of the image in pixels can be according to the grey value of the absolute difference and change. If a image block grey value of the absolute difference than the threshold value, the piece may need to be divided into four 4x4 sub-block. If less than threshold, is not divided.The experimental results demonstrate that the proposed algorithm is effective, this article puts forward a coding scheme to promote the application of three-dimensional images is of great significance.
Physical Classroom System "Human - Human" Interactive Equipment Design
Authors: Zhang Mei Heng , Wang Hai Peng , Yang Qin You
Published: March 2013

Physics classroom teaching "human-human" interactive technology is research to realize participate in the teaching activity of teachers and students and students and students interaction between feedback system and how to use the feedback system realize effective interaction method, research and development based on the WiFi technology suitable for physical science classroom feedback system, this paper discusses the use of the feedback system realize effective interaction method.
Decisions on Industry Location and Market Capacities in Latvia
Authors: Staube Tatjana , Geipele Ineta
Published: March 2013

The research is drawn on the main hypothesis that Latvia does not use its advantageous location effectively supported by the previous research results where the authors found the modern industrial real property market stock would not need any further growth and pointed on the local industrial real estate market misbalance. A focus of the research is on finding out the key principles in those companies’ choice on the most appropriate territory to the industrial objects and industrial location specifics. The Paper contains the projected results, the analysis of other scientists’ work results on the industrial location research and the model previously introduced. The worked out model is devoted to forecast stock of the modern industrial premises in Europe in the territory of the Republic of Latvia by the original approach of including the European climate change issue as a basis to assign the sustainable supply of the industrial premises. The Paper is a message to professional critical view and assessment on the model and the survey issue.
The Research on the Coordinate Development of the Renewable Resource Industry Chain Systems Based on Multi-Level Hierarchical Structure
Authors: Xu Jian Ping , Tang Bing Yong
Published: March 2013

By using the theories and methods of large system, the multi-level hierarchical structure of the renewable resources industry chain is studied and discussed. The constructive measures of the renewable resource industry chain are proposed based on multi-level hierarchical structure. In addition, the plan and design of renewable resources industry chain of a waste recovery company under E-commerce environment is given.
Does Energy Constraint Facilitate the Japanese Technical Change?
Authors: Hong Yu , Guan Jia Lin , Su Hong Wei
Published: March 2013

This study challenges the traditional wisdom that soaring energy prices exert negative effects upon economic growth. For an industrialized country with very tight energy supply constraints, increasing energy costs may drive the firms to seek for technical change and innovation to compete internationally. Using the Japanese monthly data ranging from 1975 to 2010, this study tests for the assumption of endogenous cost-driven technical change. We identify a long-run equilibrium co-integrating relationship among the Japanese industrial production, energy prices, export volumes and export prices. Although energy prices are negatively associated with Japanese industrial production in static equilibrium, the results of Granger causality tests show that an increase in domestic energy costs has significantly positive effects on Japan’s industrial production as well as on export volumes and prices, in both short-run and long-run. We document that the seemingly paradox strongly suggests an endogenous technological change driven by energy costs in Japan.
Performance Evaluation of Energy Saving and Emission Reduction
Authors: Sun Wei
Published: March 2013

Energy saving and emission reduction are becoming strategic issues in China. Evaluation indicator of energy conservation efficiency and emission reduction is established in the paper. Fuzzy clustering analysis is used to build the evaluation model of energy conservation efficiency and emission reduction in the paper. The case is analyzed in the paper. It shows that the evaluation system of energy saving and emission reduction is scientific and objective.
Study on the Measures of Production Safety Accident Prevention and Control
Authors: Zhai Zi Jian
Published: March 2013

In this paper, based on emerging issue and new trends in the production safety work, there is an system analysis of the situation of production safety accidents that is the "Eleventh Five-Year" period, Hebei Province in China. Occur in different sectors of production safety accidents in-depth study. The characteristics of production safety accidents and laws will be revealed. Production safety accident prevention and control measures will be proposed, and as a basis for management decision-making.