bluuebunny/crossref_metadata_2025 huggingface dataset:
Differences of Fire Resistance According to Boundary Conditions of Submarine Structural Steels
Authors: Kwon In Kyu
Published: April 2014

Structural steels have been developed in terms of users needs. Particularly, easy welding is one of the most important factors of steel works that results in submarine structural steel (SM). The SM has become a popular structural steel in building construction in columns and beams proving as good as ordinary structural steels (SS). However, evaluation of fire resistance at H-section made of SM steels was not suggested in terms of boundary conditions. In this paper, to compare the fire resistance of H-section made of SM steels, such as SM 400, SM 490, and SM 520 was tested and analyzed in terms of load carrying capacity at high temperature. The facts showed that as the strength is increased, the reduction ratio of an allowable load is rapid and fixed to fixed boundary condition was more robust than others in high temperatures.
Plasmids Role in Survival of Acinetobacter calcoaceticus A1 Exposed to UV-Radiation and Hydrocarbons
Authors: Bekturova Assemgul , Markhametova Zhannur , Masalimov Zhaksylyk
Published: April 2014

The role of plasmids in hydrocarbon-degrading bacteriaAcinetobacter calcoaceticus A1survival to UV-radiation and hydrocarbons was studied. Natural plasmids-containingA. calcoaceticus A1showed high resistance to UV-radiation.A. calcoaceticus A1showed active growth under exposed to UV-radiation for up to 30 minutes. Combined effects of UV-radiation and petroleum hydrocarbons did not considerably reduce the growth of strains. It was shown a stimulating effect of UV-radiation on the growth curves of strains ofA. calcoaceticus A1. Constructed recombinant strain (E.coli XL blueRec) showed the ability to grow on medium with addition petroleum hydrocarbons. Combined effects of UV-radiation and petroleum hydrocarbons have had a negative effect on the growth ofE.coli XL blueRec. Thus, results showed that the plasmid DNA of natural hydrocarbon-degrading bacteriaA. calcoaceticus A1may contain genes of microbial resistance to UV - radiation and petroleum hydrocarbons.
Application of Thermally Treated Sewage Sludge in Blended Cements
Authors: Pavlík Zbyšek , Pavlíková Milena , Fořt Jan , Záleská Martina , Medveď Igor , Černý Robert , Koutsoukos Petros G.
Published: April 2014

Chemical, physical, morphological, and mineralogical analysis of sewage sludge originating from a waste water treatment plant in Patras, Greece, is presented in the paper. The sewage sludge is firstly dried at 70°C, then oven-burned at 700°C for two hours and milled. The thermally treated material is analyzed using XRF and XRD, the particle size distribution is determined by a laser diffraction method. A potential use of sewage sludge in blended cements is investigated on the basis of the measurement of mechanical and basic physical properties of pastes containing the sludge in an amount of up to 60% of the mass of cement. Experimental results show that the thermal treatment of pre-dried sewage sludge and its grinding provides a material that can be successfully applied as a partial replacement of Portland cement. At a production of blended cements for high strength concrete, an up to 20% cement replacement level can be recommended.
Environment-Friendly Assessment of Passive Apartment House Based on Major Building Materials in Korea
Authors: Gong Yu Ri , Tae Sung Ho , Song Su Won , Roh Seung Jun
Published: April 2014

The purpose of this study is to assess environmental friendliness of passive apartment house based on major building materials in Korea. To accomplish this, stage-wise quantity information of life cycle and energy consumption data were established on major materials through theoretical consideration on life cycle assessment. In addition, basic unit database from Korean LCI DB was utilized to assess and analyze characterization value of global warming assessment. As a result, the value of global warming was smaller in passive apartment house in comparison to general apartment house. As the effect of building materials in construction stage was analyzed to be greater than the effect of energy consumption in operation stage, development of diverse building materials taking environmental impact into account is deemed necessary.
Experiment Method on the Heat Transfer Coefficient in Air Convection of Young Concrete
Authors: Yi Seong Tae , Mun Jae Sung , Kwak Min Kyoung
Published: April 2014

Along the process of setting and hardening in concrete, the temperature profile shows gradually a nonlinear distribution due to the development of hydration heat of cement. More specifically, at early ages of concrete structures, this nonlinear distribution has a large influence on the crack evolution. As a result, to obtain the exact temperature history, it is necessary to examine thermal properties of the concrete. In this study, the convective heat transfer coefficient, which presents heat transfer between concrete surface and air ambient, was experimentally investigated with test variables such as velocity of wind, type of form, and water-cement ratio.
Nanoparticles-Induced Phase Transitions in A(BC)3 Miktoarm Star Copolymers
Authors: Zhou Ling
Published: April 2014

Phase transitions induced by nanoparticles in A(BC)3 miktoarm star copolymers are investigated by using self-consistent field and density functional theories. With increasing nanoparticle concentration, a variety of phase transitions are observed, including the transition from a hexagonal lattice phase with beads at the interface to a core-shell hexagonal lattice phase, the transition from a core-shell hexagonal lattice phase to a three-color lamellar phase, and the transition from a lamellar phase with beads at the interface to a three-color lamellar phase. The results provide an effective control mechanism for obtaining the desired microstructures and realizing their transitions.
The Study on Mechanical Properties of the Graded Broken Stone Mixed with Cement and Fine Powder
Authors: Tian Jun Lei , Yang Yan Ke , Hu Yi Ping , Cheng Jian Qiang
Published: April 2014

Ha Tai railway passenger dedicated line is a national key project of the eleventh five-year plan. Its different from other construction of high-speed railway because there is many frozen soil over the place. The requirement of the subgrade material is higher.We proposed a idea that gradred broken stone mixed with cement and fine powder applied in the project.The compressive strength,splitting tensile strength and flexural strength were studied and analyzed through laboratory test.And regression analysis between compressive strength and flexural strength was made .According to the regression analysis,a power exponent function between flexural strength and compressive strength was got.Based on this,the corresponding relationship table was deduced,which can be used in practical projects.
Estimation of Optimal Water Flow Rate of a Steel Roller Shutter with Water Film Cooling System
Authors: Lee Shin Ku , Lo W.H. , Ho M.C. , Lin T.H.
Published: April 2014

The hybrid inverse method to estimate the optimal water flow rate and surface temperature on the hot surface of the steel roller shutter with water film cooling system subjected to a fire environment is presented in this paper. The results show that the effect of the down-flowing water film flow rate on the present estimates cannot be negligible. The water-film system combined with the steel roller shutter can effectively improve the heat resistance and the temperature of the shutter slat surface can be controlled to around 100 °C. The optimal water flow rate is 110 L/min for a typical 3m x 3m steel roller shutter with water film cooling system.
On the Automobile Passenger Station Planning Design
Authors: Zhang Qi Ju , Liu Song , Wang Hai Ying
Published: April 2014

Through analysis and research the present automobile passenger station planning examples, this paper summarizes design methods and design trends on master planning, architectural function space, architectural form and other aspects of modern automobile passenger station, With a view to have a positive significance on the future planning of automobile passenger station.
Preparation of Folate-Decorated Hydroxycamptothecin Nanoparticle Lyophilized Powder and its Antitumor Activity on Mice Bearing S180
Authors: Xing Zhi Hua
Published: April 2014

Nanoparticle lyophilized powder of HCPT/CTS-TPP-FA was prepared with hydroxycamptothecin (HCPT) as model drug, folate (FA) as targetting ligand, chitosan (CTS) as carrier, sodium tripolyphosphate (TPP) as polyanion and mannitol as cryoprotectant. The antitumor activity of HCPT/CTS-TPP-FA on mice bearing S180 was investigated. The results indicated that the lyophilized powder dispersed quickly into homogeneous emulsion colloid without any suspended substance in distilled water, glucose injection and normal saline. HCPT/CTS-TPP-FA and HCPT/CTS-TPP could both inhibit the growth of S180 tumor cells of mice, and the difference is significant (P<0.01).The inhibition rate of HCPT/CTS-TPP-FA(52.91%) is better than that of HCPT/CTS-TPP(40.06%).
Strength Recovery of Lightweight Concrete under Elevated Temperature
Authors: Barbhuiya Salim , Lo Tommy , Memon Shazim , Nikraz Hamid
Published: April 2014

This research is aimed at investigating the effect of elevated temperature, curing duration and curing methods on the strength recovery of lightweight concrete. Concrete specimens were subjected to elevated temperatures ranging from 300 to 600°C in a controlled heating environment. The specimens were subjected to three types of curing conditions: continuous water curing at 27°C, curing in a relative humidity of 95% at 27°C and curing in water at 60°C for three days and then curing in water at 27°C. The curing duration ranged from 7 to 56 days. The results indicated that the re-curing of concrete for the recovery of compressive strength is most effective in the temperature range from 300 to 500°C. For temperatures outside the range of 300 to 500°C, re-curing was either not effective or had limited application.
Novel Honeycomb-Microstructured Asphalt Composite Coatings for Sustainable Photocatalytic Application
Authors: Gong Jian Liang , Xu Bin Gang , Yu Hua Yang , Tao Xiao Ming
Published: April 2014

The microstructure of asphalt materials on photocatalytic performance was studied in this work. Firstly, asphalt composite coatings with highly ordered honeycomb microstructures were fabricated by a bottom-up approach through adjusting the solution concentration and the content of polystyrene (PS) additive. Further incorporation of titanium dioxide (TiO2) nanoparticles endows the porous coatings with photocatalytic functionality. SEM images demonstrate that TiO2nanoparticles disperse and decorate on the pore walls of coating. In comparison to the compact coatings prepared by traditional method, the obtained honeycomb microstructured asphalt/PS/TiO2coatings possess an enhanced and sustainable efficiency of removing NOx. Specifically, when introducing porous microstructures to the coating, the NOxreduction efficiency is 16% higher than that of traditional compact sample and shows no attenuation in continuous use.
The Carbon Absorb of Cement-Based Material in the Accelerated Carbonation Test
Authors: Zha Xiao Xiong , Wang Hai Yang , Feng Gan Lin
Published: April 2014

Carbonation is a common influence of cement-based material. And the accelerated carbonation is used in material property modify. With the reaction in the material when carbonating, the carbon dioxide will be solidifying in the material, in the shape of precipitation of calcium carbonate filled the pore. But the ability of the carbon absorbing is unknown, in this paper, some cement-based building materials are took in test, including the aerated brick, cement tile, concrete, and cement mortar. In according to the results, it has found that the carbon absorbing ability is different, and with the carbon absorbing, the strength also increasing. The aerated brick is greatest and the condition of temperature, pressure and reaction time is lowest, which give a reference on the way of the greenhouse gas transform and reduced.
The Influence of Oblique Deposited Angle on Metal Enhanced Fluorescence Property of Ag and Ag/ZnO Core-Shell Structure
Authors: Ding Yan Li , Zhao Yue , Wang Lin Jun
Published: April 2014

In this paper, the Ag nanoparticles were successfully prepared by oblique evaporation method, and then the ZnO shell layer was coated on surface of silver particles using wet chemical method. Hereafter, the structure, the morphology and the metal enhanced fluorescence (MEF) property of the Ag and the Ag/ZnO core-shell particles were studied by XRD,SEM,TEM and fluorescence (FL) spectra. From the XRD patterns and the SEM,TEM images, the Ag nanocolumn and the Ag/ZnO composite were successful obtained. Furthermore, the density of Ag nanocolumnar structure decreased with the increase of depositing angle. This phenomenon could be attributed to the surface diffusion function and the shading effect, As the result of the FL spectra, the MEF performance of the Ag/ZnO composite was more prominent than that of Ag nanocolumn, due to the quenching effect. Moreover, the MEF performance of the Ag/ZnO composite depended on the deposited angle, firstly increasing and then decreasing with the tilt angle of Ag/ZnO core-shell structure. The mechanism of fluorescence enhancement would be due to the surface plasmon resonance of Ag surface and the change in photonic mode density and/or reduction in self-quenching of fluorophores for ZnO nanostructure.
Environment Management for Sustainability of Hallasan National Park in Jeju Island, Korea
Authors: Byun Kyeong Hwa , Kang Eun Jung , Kim Kyu Han
Published: April 2014

This study aims to propose sustainable environmental management for a national park. Recently, visitors to the national park have increased due to a rapid increase in demand for forest-based recreation. However, the integrity of the ecosystem in the park has been severely compromised or destroyed by visitors and their activities and has caused a loss of animal habitat and of plant species along with pollution, soil erosion at the summit, and waste problems. Therefore strategies for environmental-friendly park management practices are necessary. This study targets Hallasan National Park on Jeju Island, Korea. The sustainability of the park plays a significant role in environmental preservation of Jeju Island because the total area of the park is 4.5% of the whole island area. Many travelers visit the island, a tourist attraction in Korea, because it is easily accessible from major big cities of the Korean Peninsula, Japan, China, and Russia. As a result, environment management for sustainability of Hallasan National Park is to restrict the number of visitors and activities, to make strong regulations, and to plan strategy of environment-friendly awareness for visitors and residents.
Proposal of a Simplified Environmental Assessment Method Based on Major Building Materials for School Buildings in Korea
Authors: Roh Seung Jun , Tae Sung Ho
Published: April 2014

The purpose of this study is to propose a simplified environmental impact assessment method based on selection of major building materials for school buildings in Korea. To accomplish this, environmental impact of 2 school buildings constructed in Korea was assessed according to the procedure of life cycle assessment. In addition, major building materials of school buildings were selected from the perspective of 6 environmental impact categories based on the assessment result, and a method of simplified environmental impact assessment was suggested. On one hand, case analysis verified applicability of the simplified environmental impact assessment method proposed in this study by showing similar value within 10% compared to the assessment result from existing detailed assessment.
Evaluation of Contributing Factors on Strength Development of Lime Stabilized Artificial Organic Soils Using Statistical Design of Experiment Approach
Authors: Ling Felix N.L. , Kassim Khairul Anuar , Karim Ahmad Tarmizi Abdul , Ho S.C.
Published: April 2014

Lime is widely used as chemical stabilizer in soft soil stabilization. However, lime is reported to be less effective when dealing with organic soil. It is believed that the organic matter in the soil will retard the pozzolanic reaction which is responsible for strength enhancement. The heterogeneity nature of the organic matter in the soil makes the study complicated and reduced the repeatability of the test results. Hence, artificial organic soil with known organic matter and content are preferred by researchers when repeatability of the test results are required in determining the influential effect of each contribution factor. Various factors such as additive contents, effect of aging (curing periods), curing temperature, density of materials and moisture content are reported by previous researchers as the potential contributing factors towards the strength development. It is believed that the interaction of the factors also will contribute to the strength enhancement. Hence, this study is carried out to evaluate the contributing factors and its interactions on strength development of artificial organic soils with known type and contents of organic matter. Statistical design of experiment (DOE) approach was utilized to evaluate the factors and its interaction on the strength development of lime stabilized artificial organic soils by using commercial statistics package. Three main factors were investigated: effect of organic content, effect of curing periods, and effect of additive, while other factors namely curing temperature, molding water content, types of compaction and compactive effort were keep constant through controlled experiments. Processed kaolin (inorganic material) is mixed with humic acid (organic matter) to simulate the organic soil which comprised of inorganic soil and organic matter. The density of the soil specimen and its moisture content were recorded before and after the curing process. General Linear Model (GLM) was utilized to determine the significance of the main factors, two-factor interactions, and three factor interactions. The significance factors and interactions were utilized in multiple regression analysis to develop the strength prediction model which can be utilized to predict the strength of stabilized materials within the inference space defined by the experiment.
The Estimation of Discharge in an Experimental Open Channel
Authors: Ho Choo Tai , Cheol Yoon Hyeon , Seon Yun Gwan , Suk Noh Hyun , Yeon Bae Chang
Published: April 2014

The estimation of a river discharge by using a mean velocity equation is very convenient and rational. Nevertheless, a research on an equation calculating a mean velocity in a river was not entirely satisfactory after the development of Chezy and Mannings formulas which are uniform equations. In this paper, accordingly, the mean velocity in unsteady flow conditions which are shown loop form properties was estimated by using a new mean velocity formula derived from Chius 2-D velocity formula. The results showed that the proposed method was more accurate in estimating discharge, when compared with the conventional formulas.
Research on Environmental Features Description and Extraction Based on Cylindrical Log-Polar Coordinate
Authors: Su Kui Feng , Chang Tian Qing
Published: April 2014

This paper presents a hierarchical hybrid mapping model for environment representation for the estimation of vehicle pose and environment feature. The environment map converted from the point cloud data gotten by LIDAR is represented with a cylindrical logarithmic polar grid, which considerably improves the efficiency and accuracy of environmental feature detection. To lower the search scope of data association and reduce the dimension of state estimation, we adopt a topology map in the top level. The autonomous ground vehicle experimental results shows that the proposed method has better performance.
2-D Simulation of Cathode-Directed Streamer in SF6/N2 Gas Mixtures
Authors: Li Meng , Wang Rui Qi , Zhang Jun Peng , Wang Dong , Cao Dong
Published: April 2014

SF6 has been widely used in the power industry as an arc quenching and insulation medium due to its excellent physical and chemical properties since 1960. However, experience shows that SF6 gas medium has many disadvantages under certain conditions: gas may encounter liquefaction when installed in cold areas; SF6 is still expensive; dielectric strength is sensitive to electric field, and require higher equipment design and manufacturing processes; SF6 is a greenhouse gas, and is used under limitations since the Kyoto Protocol was signed in 1997[. Unfortunately, its difficult to find no environment hazards and to replace SF6 completely at present. In view that the greenhouse impact of SF6 is still very little (it is estimated less than 0.01%) in the atmosphere recently and it does not damage the ozone layer, it becomes a focus to find gas mixtures containing SF6 to replace pure SF6 gas to reduce the emissions and environmental impact of SF6. Scientists from all countries and international major GIS manufacturers, electric power sector are working together to develop new gas mixture of SF6-insulated electrical equipment [2].
A Reconfigurable Monopole Antenna with Fluorescent Tubes by Using Plasma Windowing Concepts at 4.9GHz
Authors: Ja’afar Hajar , Ali M.T. , Dagang A.N. , Zali H.M. , Halili N.A.
Published: April 2014

This research aimed at investigating the performance of plasma windowing concept in terms of radiation pattern, gain and return loss. The antenna structure consists of 12 tubes of commercial fluorescent lamps that containing the mixture of mercury vapour and argon gas which upon electrification, forms plasma. After get sufficient voltage the gas inside the fluorescent tube will ionize to plasma and formed plasma column. When all of the tubes surrounding the antenna are electrified, the radiation is trapped inside. By leaving one or more of the tubes in a non-electrified state, apertures are formed in the plasma shield which allows radiation to escape. The plasma frequency in this experiment is equal to 5.634e11 Hz. This antenna design at 4.9 GHz. The advantages from this research, the design and construction of plasma antenna with fluorescent tubes can be beneficial in term of advancement in antennas technology especially in reconfigurable antenna.
Synthesis of Control System for an Unstable Object by Real Interpolation Method
Authors: Voronin A.V. , Goncharov Valeriy Ivanovich , Shchelkanova Tatyana A.
Published: April 2014

The article deals with the problem of the synthesis of control system for unstable object. The novelty of the approach has two main elements. Firstly, there is achieved the generalization of the real interpolation method of the synthesis of a wide class of objects, which includes unstable objects. Secondly, the approach allows eliminating the step of factorization of corresponding polynomials. This step is required for the formation of the reference model of automatic control system for unstable object.
Wireless Eddy Current Probe Prototype and Monitor Design and Aircraft Maintenance Applications
Authors: Gode Engin , Kushan Melih Cemal , Uzgur Sinem Cevik
Published: April 2014

Eddy current testing method has a wide usage in the field of Industry. Especially, aircraft maintenance field has so many applicable areas for this method. In addition, a wide variety of inspections and measurements may be performed easily with the eddy current method. More effective and flexible operation conditions were reached by designing wireless eddy current probe prototype for all aircraft maintenance inspections. Prototype probe design, the advantages of use of this probe in aircraft maintenance applications and inspections performed as wireless were studied in this paper.
An ADRC Controller Design for Servo System Based on ASFA
Authors: Wu Jian Min , Wang Min Gang , Hu Yi
Published: April 2014

Paper studied the improved servo system controller based on ADRC. To deal with the inherent defects of traditional PID controller, a servo control method based on the ADRC was proposed. To deal with ADRCs parameter tuning, paper proposed a method based on ASFA. Finally, the improved servo controller based on ADRC was designed and comparative analysis of simulation between the improved ADRC controller and classical PID controller was completed. Results of simulation indicated that the quickness, stability and steady-state accuracy of the tuned controller has been improved. The result verified the correctness and feasibility of the method.
Hyperchaos in the Fractional-Order Lü System and its Synchronization
Authors: Li Tian Zeng , Wang Yu
Published: April 2014

The hyperchaotic behaviors in the fractional hyperchaotic Lü system are studied. And we give the lowest orders for generating hyperchaos with different control parameter. Hyperchaos synchronization of Lü system is theoretically and numerically studied using the one-way coupling method. The numerical simulation results demonstrate the effectiveness and validity of the method.
A Semi-Fuzzy Logic Signal Optimization Model of an Isolated Oversaturated Intersection
Authors: Gao Jian Zhi , Yuan Jia Feng , Zou Zhi Yun
Published: April 2014

A semi-fuzzy logic signal optimization model is proposed aimed at the current frequently oversaturated situation of urban intersections. The model consists of two modules, namely phase optimization module and green time extender module. The phase optimization module is to choose the optimal phase by taking intersection through efficiency and vehicle delay into consideration. The green time extender module determines whether to extend or terminate the current phase green time using improved fuzzy logic control method. The real-time traffic condition on all lanes that enter the intersection are input parameters of signal timing in the whole signal optimization process, so it can make adaptive adjustments about signal timing according to the change of real-time traffic condition, which make it sure that the traffic on all lanes can cross the intersection orderly in the most reasonable phase within the most appropriate green time.
Influence of the Rotor Architecture and of the Speed on the Volumetric Efficiency of a New Type of Rotating Volumetric Machine
Authors: Hawas Malik , Băran Nicolae , Detzortzis Antonio
Published: April 2014

In this paper the authors establish the calculus expression of the volume flow rate for a new type of working machine that can work as pump, fan or low pressure compressor.The calculation of volumetric efficiency is established for a new type of machine.The results of the experimental research on the influence of the speed on the volumetric flow rate of the machine are exposed.
Researches Regarding Water Aeration Using a New Type of Fine Bubble Generator
Authors: Vlăsceanu Mihaela , Băran Nicolae , Băran Mihai
Published: April 2014

The purpose of the paper is to demonstrate that the age of porous diffusers manufactured by ceramic, plastic or other porous materials declined. Following theoretical and experimental researches, the author built a new type of fine bubble generator whose nozzle plate is manufactured by spark erosion. The constructive solution of the fine bubble generator is presented; the scheme of the experimental stand developed at POLITEHNICA University of Bucharest is subsequently exposed. The final section of the paper presents the results of the experimental research, which are compared to data existing in specialty literature.
Research on Visualization of the Wind Field Streamline Based on GRIB Data
Authors: Hou Yan E. , Dang Lan Xue , Kong Yun Feng
Published: April 2014

GRIB code has good features: such as self-description, flexibility and extensibility, and is widely applied in the description, storage and transmission of meteorological data. Wind filed streamline demonstrates the direction and trend of wind to some extent. For visualization of wind field streamline using GRIB Meteorological data, GRIB data are firstly converted into grid data using inverse distance weighted interpolation method, and then this paper proposes an algorithm for determining and tracking the points on streamline by streamline vector value evaluation and direction detection. Finally, the chart of wind field streamline is drawn using real GRIB data. The results have proved that the designed algorithm is feasible and the chart meets the needs of users.
Facial Expression Recognition Based on Gabor Features Combined with Fast PCA and SLLE
Authors: Wang Chun Han , Wang Hong , Li Zhi Na
Published: April 2014

Gabor filter bank can effectively extract the facial expression characteristic information, but the characteristic dimension is too high and needed dimension reduction. If directly use supervised locally linear embedding (SLLE) to reduce dimension. The algorithm needs large memory, calculate for a long time. In order to solve this problem, this article uses fast principal component analysis (FastPCA) to reduce dimension firstly, keeping the basic information in the expression without missing. Use SLLE processing for further dimension reduction and make a sample to distinguish the different expression more apparent. Finally use support vector machine to classify, doing experiments performed on the JAFFE database indicate the efficiency of the proposed method.
Design and Implementation of the Object Video Surveillance Base on Smart Phone Terminal
Authors: Zeng Gao Rong , Liu Gang
Published: April 2014

Video surveillance systems play an important role in safety monitoring and intelligent management of the important object. Compared to the traditional multimedia monitoring system,the low-cost and low-power embedded mobile video monitoring system will enter soon the marketplace with the promise of flexibility, quick deployment and providing accurate and real-time visual data. This paper proposed a monitoring scheme based on android smart phone terminal, ARM processor, a wireless router and camera, which makes it possible to monitor the target site anywhere and anytime under the coverage of wireless network and enhances the flexibility of surveillance system greatly.
Improved DV-Hop Localization Algorithm Based on Modifying Hop Distance
Authors: Yuan Yan , Li La Yuan , Li Chun Lin
Published: April 2014

DV-Hop algorithm is a kind of typical range-free node localization algorithm of wireless sensor network. In order to improve the positioning accuracy of DV-Hop algorithm, in the second stage of DV-Hop localization algorithm, when calculating the average hop distance of unknown nodes, weighting the average hop distance of beacon nodes which is accepted by the unknown nodes, this result is the average hop distance of unknown nodes, the weighted value is determined by the frequency of the unknown nodes received beacon nodes in the first stage. Finally using NS2 simulation tool making a simulation experiment for the improved algorithm and DV-Hop algorithm, the experimental results show that relative to the DV-Hop algorithm, the improved algorithm has a higher positioning accuracy.
Research on Automatic Monitoring System for the Construction and Protection of the Approaching Metro Tunnels Based on LabVIEW
Authors: Ren Gao Feng , Zhang Cong Rui , Zhang Sa Sa
Published: April 2014

As the urban subway leapfrogs in recent years, there are abound with close-spaced construction of metro tunnels. With the development of computer and software technology, virtual instrument will be widely developed in the testing field. The essay focuses on the usage of virtual instrument to develop a set of LabVIEW-based multi-sensor automatic monitoring system for the construction and protection of the adjacent metro tunnels. And with the comprehensive analysis of the monitoring data, the system can forecast the potential danger in a project. This monitoring system provides guidance for the adjacent construction and provides similar projects for reference.
The Signal Timing Method for Roundabout Based on the Constraint of Left-Turn Queue Length
Authors: Chen Tian Zi , Wu Zhi Zhou
Published: April 2014

Scientific and reasonable signal control would effectively improve the traffic efficiency and safety of roundabout. In this paper, a simplified signal timing method based on the constraint of left-turn queue length was investigated. Taking ZhuQue Roundabout for example, this paper utilized a simulation model based on VISSIM and adopted evaluation index system of capacity, saturation and average vehicle delay. By comparing the results of before and after the new timing, feasibility and effectiveness of the proposed model has been verified.
Adaptive Beam Forming Algorithm of Anti-Jamming GNSS Terminal Research
Authors: Ma Hong Jiao , Li Meng , Wang Kang , He Zai Ming
Published: April 2014

A variety of high-density and strong signal electromagnetic jamming and interference effect is one of the difficult problems which have bad effects on the accuracy of GNSS Satellite navigation receivers. For different types of jamming and interference effect, this paper will analyze their corresponding coping strategies on GNSS satellite navigation terminal. On the structure basis of the smart antenna array, the algorithm flow of LMS, RLS and CMA are analyzed and the simulation of these three classic beam forming algorithm are also performed. The comparison result of the convergence curves output and convergent beam directional diagram shows that all of them can extract the useful signal from the interfering signals. RLS algorithm has a better setup speed and convergence rate, and also has a strong adaptability to non-stationary signals. Therefore, its filtering performance is significantly better than LMS and CMA. But due to its high computational complexity, real-time processing is very hard to achieve.
The Remote Management System for Greenhouses Based on 3G and Power Line Carrier
Authors: Zhao Mei Lian , Li Hua Guang , Zhang Xiu Juan
Published: April 2014

The greenhouse environmental monitoring and control is the current hot topic of agriculture automation. The article designed a greenhouse remote management system, which can complete the functions of video surveillance, information gathering, and device control based on power line carrier .Realize the information and automation of greenhouse Management. The system design background is introduced, the system hardware and software design is described, and also, we give a detailed description of system application prospects.
Applying QFD and Kano Model to Experience Design for Cultural Tourism on Mobile Device: An Example of Leifeng Pagoda, Hangzhou, China
Authors: Zhu Shang Shang , Tu Xing Ya
Published: April 2014

For most cultural landscapes, experience design is particular important. However, there is less research on experience design for cultural attractions. Whats more, some mobile Apps for cultural tourism are lack of good user experience. This paper proposes utilizing a combination of the Quality Function Deployment (QFD), Kano model and scenario-based design as a useful tool to design a mobile application for Leifeng pagoda tourism. The study makes clear the design directions. Results show that: (1) In regard to the culture of Leifeng pagoda, we should focus on introducing the pagoda history and sites; Information query of surrounding traffic, catering, accommodation is essential to tourists; the basic information guide is the most important need.(2) In the 18 design requirements, controls design, navigation design, information architecture are closely related to the software usability, so they have the highest priority; We should also pay attention to text content design, especially pagoda culture, and accuracy of GPS position.
Three-Dimensional Geological Modeling of Mining Subsidence Prediction Based on the Blocks
Authors: Liu Ji Bo , Dai Hua Yang , Wang Xiao , Shynar Aitkazinova , Madimarova Gulmira
Published: April 2014

In order to study the rule of deformation prediction of coal mining subsidence in three-dimensional space, it is necessary to establish a three-dimensional geological model. This paper introduced the idea, construction methods and key technologies of three-dimensional geological modeling based on block method and arbitrary boundary conditions by using of VC++ and OpenGL development environment. For the method to build three-dimensional model is simple and accurate. It can be used in the study of mining subsidence prediction and displaying of deformation and failure in the three-dimensional space.
Microwave Irradiation of Candidal Adhesion and Biofilm on Polymethylmethacrylate Resin
Authors: Goveas Reiyal , Srithavaj Theerathavaj , Wonglamsam Amornrat , Thaweboon Boonyanit , Thaweboon Sroisiri
Published: April 2014

This 3 phase study examined (1) the effect of microwave irradiation on the adhesion and (2) biofilm formation of 4 candidal species on heat polymerized polymethyl methacrylate (PMMA) specimens. Lastly, (3) the flexural strength of heat polymerized PMMA was tested.C.albicans(ATCC 10231),C. glabrata(ATCC 22019),C. krusei(ATCC 6258) andC.parapsilosis(ATCC 90030) were used. The flexural strength of the PMMA resin after microwave irradiation was tested in accordance with ISO 20795-1 specifications. A one-way ANOVA statistical analysis was used for all the results.The maximum effect of 94% to 98% reduction in adhesion and biofilm counts was seen with microwave irradiation at 850 W and 1000 W for 120 sec. There was no significant difference between the control and irradiated specimens in terms of flexural strength. Reduction of candida adhesion and biofilm on PMMA resin can be achieved with microwave irradiation.
Dual Resource Constrained Job Shop Scheduling Based on Compressed Time Window
Authors: Huang Yuan , Yan Xiu Tian , Li Jing Yao
Published: April 2014

To solve the double-objective Dual Resource Constrained Job-Shop Scheduling Problem with heterogeneous workers (DRCJSP-HW), a scheduling strategy based on compressed time window is proposed which compress and move up task time window to optimize global scheduling performance index at the expense of sacrificing scheduling performance of partial tasks. Against the limited ability of searching global optimum solution of Ant Colony algorithm and the slow convergence of genetic algorithm when solving double objective scheduling problem, the PBGA which inherit evolution experience of parent chromosome population with pheromone is designed. At last, simulation results demonstrate not only the satisfying optimization result of the scheduling strategy based on compressed time window but also the validity of the PBGA used for solving DRCJSP-HW.
Application of the Internet of Things in Colleges' Management
Authors: Li Li Na , Zhao Peng Fei
Published: April 2014

The Internet of things is a new information technology in many fields. This paper focuses on the field of higher education, and puts forward some ideas and application in education management. This paper expounds the application of the Internet of things management system function, structure architecture diagram, the basic work principle and key technology. These contents, to solve practical problems in Colleges management, have certain practical significance.
The Planning of Urban Public Facilities via Universal Design
Authors: Han Ying , Liu Zhi Feng , Dai Jun , Ge Shao Feng , Wang Yan
Published: April 2014

The paper presented a view of incorporate universal design principles into the planning of public facilities in Chinese cities. Then we concluded some problems of Chinese urban public facilities now days, such as insufficient numbers of facilities sometimes, lacking of humane care, ineffective supervision and management in some cities. Finally we proposed ways to enhancing the quality and efficiency of urban public facilities by universal design, including setting up an expert group, mining the culture of the city features, expressing the love and care of the human needs, emphasizing fairness, protecting the safety of the users, improving comfort of the users and insisting on a sustainable use.
Feasibility Study of Agricultural E-Commerce Transactions
Authors: Dan Liu
Published: April 2014

This paper by the current development status of China's agriculture will combine agriculture and commerce to conduct a feasibility analysis also describes the development of e-commerce in agriculture in the current application status as well as some of the problems faced by online exchanges, and in response to these suggestions put forward strategies.
Research on the Influencing Factors of Cookware Buy Online Based on the Consumer Lifestyles
Authors: Lu Chun Fu , Jiang Yi Ping , Wu Jian Feng
Published: April 2014

With the increasing development of online shopping, enterprises pay more attention to e-commerce. This study, from the perspective of online consumer lifestyle, we established online consumer lifestyle models, clustered online consumers into 4 groups called reasonable savers, traditional life group, brand- guided group and free casual group. From the results, we know that different factors have the different degrees of the influence on different consumer groups. The main factors that impact consumers most is reputation factors, followed by marketing factors, and design factors.
Effects of UV Irradiation on the Molecular Structure and Tensile Properties of Nucleated Polypropylene
Authors: Tao You Ji , Jie Gan Xin , Zhang Xiao Dong , Hu Li Fen , Peng Jian , Wang Jun , Feng Hao
Published: April 2014

A sorbitolum compound and an aryl amide compound were applied to prepare α-nucleated PP (α-PP) and β-nucleated PP (β-PP), respectively. Effects of UV irradiation on the molecular structure and tensile properties of pure PP, α-PP and β-PP were investigated. The relationship of tensile strength with carbonyl index was discussed. The change of relative content of β-modification in β-PP during photodegradation was examined by WAXD. The carbonyl index calculated from FTIR spectra arranged as α-PP > PP > β-PP, however, the tensile strength retention at the UV irradiation time of 792h arranged as PP > β-PP > α-PP. The relative content of β-crystal nearly unchanged during the photodegradation.
In Situ Observations of Stresses in Al Interconnect Line by Synchrotron Radiation under Thermal/Electrical Conditions
Authors: Fu Hou Kui , Lu De Bo , Li Zi Guo
Published: April 2014

In-situ observation of stress in Al interconnects under electromigration and thermal effect by using the synchrotron radiation x-ray diffraction. The test temperature was controlled by changing the current density of W (self-heating structure). The EM-induced stress was also investigated with current densities from 3x105A/cm2 to 4x106A/cm2.The conclusion agreed well with the simulation results.
Neural Network Model for Predicting Anticancer Activity of Pyridopyrimidines Derivatives
Authors: Du Xi Hhua , Zhuang Wen Chang
Published: April 2014

Molecular structures of pyridopyrimidines derivatives as known as dihydrofolate reductase (DHFR) inhibitors were investigated by using the neural network method. Based on the molecular connectivity, molecular connectivity index and molecular electronegativity distance vectors of 32 pyridopyrimidine derivatives were obtained. Among these parameters, three optimized structural parameters 1χ3χ and M17 as the input neurons of the artificial neural network were selected by step-wise regression. Then a 3:4:1 network architecture was employed and a satisfying neural network model for predicting anticancer activity (lg1/C) was constructed with the back-propagation (BP) algorithm. The total correlation coefficient R and the standard deviation S were 0.925 and 0.336 respectively that showed significantly nonlinear relationships between lg1/C and three structural parameters. It was concluded that the predictions of BP neural network are better than those of methods in the literatures.
Diversity and density of sea urchins populations in rocky shores off Nilwella in Southern province of Sri Lanka
Authors: Gayashan MA , Jayakody S
Published: April 2014

Sea urchins (or regular echinoids) are one of the most common macro-grazers and keystone species in rocky shore systems. However, their ecology is little explored in Sri Lankan waters. Therefore, a study was conducted to investigate the spatio-temporal variations in the diversity and density of sea urchins off Nilwella in the Southern coast of Sri Lanka. Duwagahawella harbour area and Hirikatiya bay area were selected as disturbed and less disturbed areas respectively considering the presence and absence of a harbour and other anthropogenic impacts. Random permanent strip transects of varying lengths (11-20m×0.5m) were used to estimate the number of sea urchins for 5 months with 20 repeated weekly samplings. Sea urchin density and diversity were estimated for two sites and means were compared. According to the results, a total of 8 sea urchin species were detected from the two areas. Stomopneustes variolaris was the dominant species in both areas. The mean density of Stomopneustes variolaris was significantly higher in disturbed area compared to the less disturbed area (P<0.05). However compared to disturbed area, densities of Tripneustes gratilla, Diadema setosum, Diadema savignyi, Echinostrephus molaris and Echinometra mathaei were higher (P<0.05) in less disturbed area. Throughout the sampling, Shannon Weinner index of diversity was higher in less disturbed area (P<0.05). Results highlighted the dominance of S. variolaris particularly in disturbed area. Further studies are necessary to establish the competitiveness of S. variolaris and if it out-competes the other associated sea urchin species. DOI: http://dx.doi.org/10.4038/sljas.v17i0.6854 Sri Lanka Journal of Aquatic Sciences Vol.17: 35-46
Economic viability of Asian sea bass (Lates calcarifer) and Tilapia (Oreochromis niloticus) small scale aquaculture systems in Sri Lanka
Authors: Gammanpila M , Singappuli MS
Published: April 2014

Information on the economic viability of aquaculture is crucial for investors when assessing the feasibility of an aquaculture project. As such information has been scarce in Sri Lanka, present study evaluates the production cost and profitability of two small scale aquaculture practices in Sri Lanka. These are 1) Asian sea bass (Lates calcarifer) cultured in net cages at Nadathivu canal in Kinniya in 2009 2) Monoculture of Genetically Improved Farmed Tilapia (GIFT) produced under intensively in net cages in Maduganga estuary in 2009. In this study, data on yield, costs and returns of farming were collected to quantify production costs and to assess the profitability. Economic analysis of the production systems revealed that the cost of tilapia and sea bass production per kg were Rs. 142.19 and 268.62 respectively. The yield of tilapia/m3 was measured to be 22.5 kg and the yield of sea bass/m3 was 22.1 kg. Tilapia cage culture had the highest return on investment (40.65%) and required 353.1 kg of the total production to reach the break-even point compared to sea bass. Feed was the main cost factor which was 66.21% for sea bass production while that of tilapia production was 60%. The ratio of the variable cost in total costs of tilapia production was 74% while that of sea bass production was 82%. The benefit cost ratio in tilapia production (1.40) was higher comparing to sea bass production (1.12). Culture of tilapia showed the highest viability and profitability of the two evaluated culture practices. DOI: http://dx.doi.org/10.4038/sljas.v17i0.6855 Sri Lanka Journal of Aquatic Sciences Vol.17: 47-57