bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors influencing consumer behavior relating to the purchasing of honey part 1. The buying process and the level of consumption
Authors: Roman Adam , Popiela-Pleban Ewa , Kozak Maria
Published: January 2014

Production of honey is the main determinant of profitability in the beekeeping sector. However, high production does not always imply higher profits. A major determinant of the profitability of an apiary is the ability to sell the acquired product. The aim of the study was to present the most important factors influencing consumer honey purchasing behavior. The results showed that honey can simultaneously satisfy a multitude of needs - nutritional, taste, prophylactic, and medicinal. Consumer decisions to buy honey are influenced by economic factors, indicating the financial situation of households. The decision is often habitual and dictated by knowledge of the value of honey. Psychological and social determinants are the main motives when choosing among the varieties of honey. Studies have shown that the average annual per capita consumption of honey was 1.32 kg. However, honey consumption rates differed strongly, ranging from 0.066 to 0.4 kg per person per month. More than 60% of respondents indicated the high or very high price of honey. Buying honey directly from the beekeeper was widespread among respondents (63.9%). Some respondents (7.2%) stated that they do not consume honey at all, but price cuts and the opportunity to taste test honey at the point of sale would be an incentive for them.
INSECTICIDAL ACTIVITIES OF ESSENTIAL OILS FROM SOME CULTIVATED AROMATIC PLANTS AGAINST SPODOPTERA LITTORALIS (BOISD)
Authors: Souguir Salaheddine , Chaieb Ikbal , Cheikh Zohra Ben , Laarif Asma
Published: January 2014

Medicinal plant species were tested for their fumigant activity against Spodoptera littoralis third instar larvae. Responses varied according to plant species and parts used. For the present investigation, volatile oils were obtained from: Foeniculum vulgare (flowers and seeds), Coriandrum sativum (seeds), Daucus carota (flowers), Pelargonium graveolens (leaves and flowers), Origanum majorana (leaves and flowers), and Salvia officinalis (leaves). Fumigant activity was observed after 24 hours of exposure. All essential oils were proved to be toxic to the third instar larvae. However, the highest mortality was observed in the essential oil of S. officinalis leaves, C. sativum seeds, F. vulgare seeds, D. carota flowers, and O. majorana leaves with LC50 = 23.050 μl/l air, 68.925 μl/l air, 95.075 μl/l air, 99.300 μl/l air, and 100.925 μl/l air, respectively. Other oils showed an LC50 between 101 and 183 μl/l air.
THE ROLE OF TEACHER KNOWLEDGE IN ESP COURSE DESIGN
Authors: Górska-Poręcka Bożena
Published: January 2014

English for specific purposes (ESP) has been conceptualized by its leading scholars, like Hutchinson and Waters (1987) or Dudley-Evans and St. John (1998), as a multi-stage process, where the ESP practitioner fulfils a variety of roles, including that of learner needs researcher, course designer, language instructor, learning assessor, and course evaluator. The performance of these roles requires considerable knowledge of a linguistic, socio-cultural and pedagogical nature, necessary to inform the teacher’s cognitive processes, par- ticularly those involved in course decision making. The necessary professional knowledge of the ESP teacher, which is gained through professional school- ing, teacher training, and teaching experience, comprises both relevant theo- retical concepts (knowing what) and performance skills (knowing how). It di- rectly impacts on all stages of the ESP process, namely the planning, design, teaching, assessment and evaluation of a course, largely determining its quality. The present paper focuses on ESP teacher cognition, especially those cognitions (i.e. knowledge and beliefs) that are involved in course design, informing the teacher’s choices of course parameters and instructional practices. Elaborating on the concepts developed by language cognition scholars, like Shulman (1987), Andrews (e.g. 2007), and Borg (e.g. 2006), the author tries to outline the in- ternal structure of ESP teacher cognition and describe the function of each subordinate knowledge base. The paper also presents the preliminary results of a small-scale exploratory study into the professional cognition of 13 teachers of Legal and Business English employed at the University of Warsaw.
Reliability assessment of the passive heat removal system of the VVER-1000 reactor at Kudankulam NPP
Authors: Khubchandani P. , Srivastava A. , Lele H. G.
Published: January 2014

For analyzing the failure probability of the system, a model of the system was developed in best estimate T–H code RELAP5/Mod3.3. The parameters affecting the system performance were identified, their range and distribution was determined. Feasibility of various methods for calculating functional reliability was analyzed. The response surface method was selected. A response surface was constructed for the entire range of parameters for the model developed using Monte Carlo method. A large number of samples of the input parameters was generated, taking into account their individual distributions. They were classified as success/failure based on their position with respect to the failure surface. The ratio of the failed samples to the successful samples gives us the failure probability. An attempt was also made to integrate the functional failure probability with the component failure probability of the system to get an overall failure probability of the system.
Modulation of Cyclins, p53 and Mitogen-Activated Protein Kinases Signaling in Breast Cancer Cell Lines by 4-(3,4,5-Trimethoxyphenoxy)benzoic Acid
Authors: Lee Kuan-Han , Ho Wen-Yueh , Wu Shu-Jing , Omar Hany , Huang Po-Jui , Wang Clay , Hung Jui-Hsiang
Published: January 2014

Despite the advances in cancer therapy and early detection, breast cancer remains a leading cause of cancer-related deaths among females worldwide. The aim of the current study was to investigate the antitumor activity of a novel compound, 4-(3,4,5-trimethoxyphenoxy)benzoic acid (TMPBA) and its mechanism of action, in breast cancer. Results indicated the relatively high sensitivity of human breast cancer cell-7 and MDA-468 cells towards TMPBA with IC50 values of 5.9 and 7.9 µM, respectively compared to hepatocarcinoma cell line Huh-7, hepatocarcinoma cell line HepG2, and cervical cancer cell line Hela cells. Mechanistically, TMPBA induced apoptotic cell death in MCF-7 cells as indicated by 4',6-diamidino-2-phenylindole (DAPI) nuclear staining, cell cycle analysis and the activation of caspase-3. Western blot analysis revealed the ability of TMPBA to target pathways mediated by mitogen-activated protein (MAP) kinases, 5' adenosine monophosphate-activated protein kinase (AMPK), and p53, of which the concerted action underlined its antitumor efficacy. In addition, TMPBA induced alteration of cyclin proteins’ expression and consequently modulated the cell cycle. Taken together, the current study underscores evidence that TMPBA induces apoptosis in breast cancer cells via the modulation of cyclins and p53 expression as well as the modulation of AMPK and mitogen-activated protein kinases (MAPK) signaling. These findings support TMPBA’s clinical promise as a potential candidate for breast cancer therapy.
Dual Drug Release Electrospun Core-Shell Nanofibers with Tunable Dose in the Second Phase
Authors: Qian Wei , Yu Deng-Guang , Li Ying , Liao Yao-Zu , Wang Xia , Wang Lu
Published: January 2014

This study reports a new type of drug-loaded core-shell nanofibers capable of providing dual controlled release with tunable dose in the second phase. The core-shell nanofibers were fabricated through a modified coaxial electrospinning using a Teflon-coated concentric spinneret. Poly(vinyl pyrrolidone) and ethyl cellulose were used as the shell and core polymer matrices respectively, and the content of active ingredient acetaminophen (APAP) in the core was programmed. The Teflon-coated concentric spinneret may facilitate the efficacious and stable preparation of core-shell nanofibers through the modified coaxial electrospinning, where the core fluids were electrospinnable and the shell fluid had no electrospinnability. The resultant nanofibers had linear morphologies and clear core-shell structures, as observed by the scanning and transmission electron microscopic images. APAP was amorphously distributed in the shell and core polymer matrices due to the favorite second-order interactions, as indicated by the X-ray diffraction and FTIR spectroscopic tests. The results from the in vitro dissolution tests demonstrated that the core-shell nanofibers were able to furnish the desired dual drug controlled-release profiles with a tunable drug release amount in the second phase. The modified coaxial electrospinning is a useful tool to generate nanostructures with a tailored components and compositions in their different parts, and thus to realize the desired functional performances.
Dietary Intake by Dutch 1- to 3-Year-Old Children at Childcare and at Home
Authors: Gubbels Jessica , Raaijmakers Lieke , Gerards Sanne , Kremers Stef
Published: January 2014

The goal of the current study was to assess dietary intake in a large sample (N = 1016) of Dutch toddlers (1–3 years old), both at childcare and at home. Dietary intake during two weekdays was recorded using an observation format applied by childcare staff for intake at childcare, and partially pre-coded dietary journals filled out by parents for intake at home. Children’s intake of energy, macronutrients and energy balance-related food groups (fruit, vegetables, sweet snacks, savoury snacks) were compared with Dutch dietary guidelines. In addition, differences between the dietary intake by various subgroups (based on gender, age, childcare attendance, socio-economic status of childcare centre) were explored using multilevel regression analyses, adjusting for nesting of children within centres. Energy intake was high relative to dietary guidelines, and children consumed more or less equal amounts of energy at home and at childcare. Dietary fibre, fruit and vegetable and snack intakes were low. Intake at childcare mainly consisted of carbohydrates, while intake at home contained more proteins and fat. The findings imply various opportunities for childcare centres to improve children’s dietary intake, such as providing fruit and vegetables at snacking moments. In addition, the findings underline the importance of assessing dietary intake over a whole day, both at childcare and at home, to allow intake to be compared with dietary guidelines.
The MAIN Shirt: A Textile-Integrated Magnetic Induction Sensor Array
Authors: Teichmann Daniel , Kuhn Andreas , Leonhardt Steffen , Walter Marian
Published: January 2014

A system is presented for long-term monitoring of respiration and pulse. It comprises four non-contact sensors based on magnetic eddy current induction that are textile-integrated into a shirt. The sensors are technically characterized by laboratory experiments that investigate the sensitivity and measuring depth, as well as the mutual interaction between adjacent pairs of sensors. The ability of the device to monitor respiration and pulse is demonstrated by measurements in healthy volunteers. The proposed system (called the MAIN (magnetic induction) Shirt) does not need electrodes or any other skin contact. It is wearable, unobtrusive and can easily be integrated into an individual’s daily routine. Therefore, the system appears to be a suitable option for long-term monitoring in a domestic environment or any other unsupervised telemonitoring scenario.
STRUCTURAL BEHAVIOUR OF FULLY COUPLED SPAR–MOORING SYSTEM UNDER EXTREME WAVE LOADING
Authors: Islam A. B. M. Saiful , Jameel Mohammed , Ahmad Suhail , Jumaat Mohd Zamin , Kurian V. John
Published: January 2014

Floating spar platform has been proven to be an economical and efficient type of offshore oil and gas exploration structure in deep and ultra-deep seas. Associated nonlinearities, coupled action, damping effect and extreme sea environments may modify its structural responses. In this study, fully coupled spar–mooring system is modelled integrating mooring lines with the cylindrical spar hull. Rigid beam element simulates large cylindrical spar hull and catenary mooring lines are configured by hybrid beam elements. Nonlinear finite element analysis is performed under extreme wave loading at severe deep sea. Morison's equation has been used to calculate the wave forces. Spar responses and mooring line tensions have been evaluated. Though the maximum mooring line tensions are larger at severe sea-state, it becomes regular after one hour of wave loading. The response time histories in surge, heave, pitch and the maximum mooring tension gradually decreases even after attaining steady state. It is because of damping due to heavier and longer mooring lines in coupled spar–mooring system under deep water conditions. The relatively lesser values of response time histories in surge, heave, pitch and the maximum mooring tension under extreme wave loading shows the suitability of a spar platform for deep water harsh and uncertain environmental conditions.
LIFECYCLE ENERGY CONSUMPTION PREDICTION OF RESIDENTIAL BUILDINGS BY INCORPORATING LONGITUDINAL UNCERTAINTIES
Authors: Wang Endong , Shen Zhigang
Published: January 2014

Accurate prediction of buildings’ lifecycle energy consumption is a critical part in lifecycle assessment of residential buildings. Longitudinal variations in building conditions, weather conditions and building's service life can cause significant deviation of the prediction from the real lifecycle energy consumption. The objective is to improve the accuracy of lifecycle energy consumption prediction by properly modelling the longitudinal variations in residential energy consumption model using Markov chain based stochastic approach. A stochastic Markov model considering longitudinal uncertainties in building condition, degree days, and service life is developed: 1) Building's service life is estimated through Markov deterioration curve derived from actual building condition data; 2) Neural Network is used to project periodic energy consumption distribution for each joint energy state of building condition and temperature state; 3) Lifecycle energy consumption is aggregated based on Markov process and the state probability. A case study on predicting lifecycle energy consumption of a residential building is presented using the proposed model and the result is compared to that of a traditional deterministic model and three years’ measured annual energy consumptions. It shows that the former model generates much narrower distribution than the latter model when compared to the measured data, which indicates improved result.
A Case for the Introduction of Designers' Safety Education (DSE) for Architects and Civil Engineers
Authors: Wan Azmi Wan Faida , Misnan Mohd Saidin
Published: January 2014

The construction industry has been known as the most fatal industries worldwide. Accident affects varies parties involving direct and indirect costs to the contractor and clients as well. The construction safety measures in the current practice often begin during the construction phase rather than at the earliest stages possible. Design for Construction Safety (DfCS) is a process to reduce the hazards and risks during construction by focussing on design decision at the design phase. This concept implementation is new and has yet to be adapted worldwide. With every new culture comes with a set of list to overcome. The top barriers stated by past researchers are lack of knowledge and education followed by increased of liability and the nature of the industry. The initial step to be taken is to adapt this concept in the universities and college level during the designers’ formal education. By mastering this subject, the designers will become more confidence with new found skills while their attitudes towards safety will have a huge impact on workforce safety by eliminating hazards on site.
Analysis of Vertical Multiplier on Revised National Institute for Occupational Safety and Health (NIOSH) Lifting Equation for Male Workers in Indonesia Industry
Authors: Muslim Erlinda , Iadha Nuraini Aisyah , Puspasari Maya Arlini
Published: January 2014

Manual Material Handling (MMH) is a risky activity that causes low back pain and has become a worldwide phenomenon, not only in developed countries, but also occur in developing countries. One effort to reduce the injury caused by MMH is the Reccomended Weight Limit (RWL) equation, published by NIOSH. However, NIOSH equation is more tested and researched in European and America. Therefore, it is necessary adjustment for Indonesia people. In this paper, the author analyze the vertical multiplier factor in NIOSH equation for male workers in Indonesia. Multiplier factor is assessed using three criterias. There are biomechanics, physiology, and psychophysical. The result of this study is form of vertical multiplier equation, i.e VM = 1 - 0.0310083 (68-V) and VM = 1 - 0.00708215 (68-V) for an elevation below the knuckle.
Ergonomics Study of Public Hospital Signage
Authors: Basri Ahmad Qadri , Sulaiman Ruhaizin
Published: January 2014

Background: Signage provides information and direction. It is important as a medium to show direction in offices and public buildings. It is more crucial for emergency services, specifically hospitals. Incomplete information and confusion of signage are among common issues being raised by the public to hospital management. Objective:This study is carried out to determine user height preferencesof Hospital Kajangs signage and to proposean appropriate height forits future signage. Approach: Thirty five respondents (20male and 15 female) participated in this study. They are aged between 18 to 60 years old with the mean of age at39years old. Their stature height and eye-level height are measured using SECA Stable Stadiometer.They are asked to give a rating using 1-10 scaleon threequestions to measure their preferences towards the present signage.The studied signage is also measured using standard measuring tape. The data is analyzed using SPSS.Results:It is found that 25 respondents (71.43%) agree to say that the height of signage in Hospital Kajang is too highwhile10 of them (28.57%) disagree. The signage should be10.5 cm lower from present height in order to optimize its function for both groups. The proposed signage height should be 187.5 cmfrom the floor. Conclusion:The present signage in Hospital Kajang requires necessaryheight readjustment to satisfythe majority of its staffs and visitors. The improvement is vital to ensure the signage meet the directional purpose.
RULA Analysis of Work-Related Disorder among Packaging Industry Worker Using Digital Human Modeling (DHM)
Authors: Mohamad Darliana , Md Deros Baba , Ismail Ahmad Rasdan , Daruis Dian Darina Indah , Sukadarin Ezrin Hani
Published: January 2014

Musculoskeletal disorder (WMSDs) is the common health problems for the industrial workers. This health problem can contribute to long term effect on the production performance. The objective of this study is to analyze the posture of industrial worker in packaging industry using the RULA assessment in CATIA P3 V5R14 software. The working posture was reconstructed and developed in the CATIA P3 V5R14 software and then RULA assessment was conducted. From the RULA analysis, several awkward postures were detected to be high in risk factors. The postures in risk are postures 1,2 and 5 which mainly involve lifting heavy product and excessive bending. As a conclusion the RULA assessment was able to detect the problematic postures and further improvement can be conducted to avoid discomfort or further health complication.
Conceptual Design and Hydrodynamic Performance of a Floating Offshore Wind Turbine Cell-Spar-Buoy Support Structure
Authors: Wang Hai Ying , Chen Xiao Ming , Zhao Cheng Bi , Tang You Hong , Lin Wei
Published: January 2014

On the way to further exploit offshore wind energy, conventional fixed-bottom technology has been limited by the water depth. After the worlds first full scale floating wind turbine being installed in the North Sea in 2009, the floating support structure for offshore wind turbines is most likely becoming not only a technically feasible but also an economically viable solution, especially for regions of water depth over 50 meters. However, less attentions have been paid on floating support strucure, which is a very important part. Derived from commercialized offshore oil and gas platform of cell spar, a conceptual design of a cell-spar-buoy support structure for NREL 5 MW offshore wind turbine is proposed. In this system, structural type of cells is absorbed for cost reduction while damping configurations are used to optimize the stability of wind turbine. For further hydrodynamic performance estimations, numerical simulations have been performed to compute the response amplitude operators (RAOs) and the wave response motions, which are the key factors of the preliminary design. Meanwhile, the motion performance of the platform with mooring system in operating conditions and mooring line tensions under the 50 years return period storm survival condition in the South China Sea was calculated in time domain. The results showing excellent motion performance of cell-spar-buoy.
Bioinfo-Kit: A Sharing Software Tool for Bioinformatics
Authors: Huang Yu , Wang Jian Yong , Wei Xiao Mei , Hu Bin
Published: January 2014

In bioinformatics research, for the lacks of an effective algorithm-integrating mechanism and a friendly graphical user interface of the toolkits in the field of biological data processing and analyzing, the authors designed and implemented a sharing software system Bioinfo-Kit based on the Java 2 Platform Enterprise Edition (J2EE), which provides 1) a general application development interface to integrate or bridge other programs and 2) a workflow mechanism to operate them and make them talk easily. In addition, a module for biological data (multiple electrodes data, biomedical data and etc.) analysis was implemented in the software system, which provided a workflow mechanism to integrate a series of algorithms and visualization tools. Because the interface developed is very general and flexible, new analysis tools can be integrated effectively as required. Bioinfo-Kit implies an ideal environment for integrative bioinformatics research.
Deep Removal of Methyl Mercaptan in Biogas
Authors: Gong Juan , Jiao Yi Fei , Su Qing Quan , Mi Wan Liang
Published: January 2014

For a distributed PEMFC power station utilizing biogas as a source to produce hydrogen, deep desulfurization of the biogas is important. ZnO/γ-Al2O3 and CuO/γ-Al2O3 were prepared by an impregnation method, and their performances on CH3SH removal in the biogas have been studied. Results showed that CuO/γ-Al2O3 is able to remove CH3SH to below 10 ppb at 250-400 °C and has a sulfur capacity of 0.056 mmol g-1 at 300 °C. Regarding to the desulfurization mechanism, it has been confirmed that the removal of CH3SH with CuO/γ-Al2O3 is based on chemical adsorption. In the desulfurization, CH4s dry reforming took place at above 250 °C, and the generated H2 and CO reduced CuO to Cu2O and Cu. Further, it was supposed that H2S generates through the hydrogenation of CH3SH at the presence of H2.
Fatigue Research on Excavator Boom Driven by Real Loads
Authors: Jiang Tao , Liu Xiong Bin
Published: January 2014

The difficulty to simulate the complex loads in the fatigue analysis of excavator working device results in great error in the result, so a research method of fatigue life of working device that was completely driven by real loads was proposed. With a 20t excavator as the research object, a kinetic model of excavator working device was established using the D-H method. According to the hydraulic cylinders pressure and displacement data in the process of digging recorded by the sensors, the real working loads of booms hinge points were obtained combining the equation of forces. The life contour of boom was obtained by the fatigue analysis of boom using software MSC.Fatigue. The minimum fatigue life is 16.8 years, and the result of the study provides basis for designing excavator working device structure.
Numerical Simulation of Effects of Spray Angle on Flow, Combustion and Emissions of Diesel Engine
Authors: Li Da Guang , Ying Zhang , Zhu Xiu Qing
Published: January 2014

Previous papers which researched the effects of spray angle were mainly focused on the influence of spray angle on the performance and emissions of diesel engine. Few papers clarified the effect of spray angle on the airflow in detail. Airflow and turbulence have a significant influence on the combustion and distribution of emissions.The effects of spray angle on the flow, combustion and emissions of diesel engine were studied in this paper by a numerical simulation method. The results indicated that the spray angle had an obvious impact on the vortex and turbulence. The distribution of high temperature areas and emissions depend on the vortex and turbulence. With the increase of spray angle, the maximum cylinder pressure and temperature increase gradually. The heat release rate increases with the increase of spray angle. The CO and soot emissions were the lowest when the spray angle is 155°, however, the NOx emissions was the highest at that spray angle.
Non-Contact Creep Measurement Based on Fourier Domain Optical Coherence Tomography
Authors: Chen Dan Yang , Zhang Qiu Kun , Zhong Jian Feng , Zhong Shun Cong , Guo Jin Quan , Yang Tian Xue , Yao Li Gang
Published: January 2014

A non-contact Fourier-domain optical coherence creep tomography (OCCT) is developed and employed in real-time non-contact creep measurement. Experiments on thermal deformation were carried out by using the self-developed OCCT to measure a high-temperature structure. In the OCCT system, a high-performance spectrometer, and a thermal light are, respectively, employed as the detector and the light source. Due to the broadband of the spectrometer and light source, the system provided high robust performance with an excellent deformation measurement resolution of sub-millimeter scale. Due to the energy leakage effect of FFT, a spectrum correction technique was employed to enhance the resolution of the OCCT system. From the experimental results, the self-developed OCCT has great potential applications in non-contact real-time creep measurement of high-temperature structures.
Performance Study of Flowing-Over PV/T System with Different Working Fluid
Authors: Tang Li Qing , Zhu Qun Zhi
Published: January 2014

This paper studied the performance of a flowing-over PV/T system with water and Al2O3 nanofluid as the working fluid. The experimental system was built in the outdoors. The parameters of the experiment obtained for processing, analysis, accessing to the electrical efficiency and thermal efficiency. Experimental results show that the flowing-over PV/T system with Al2O3 nanofluid as working fluid has a higher overall efficiency than that with water.
Research of Median-Nonlinear Flow of Proportional Valve
Authors: Jia Wen Hua , Yin Chen Bo , Cao Dong Hui
Published: January 2014

In the traditional proportional valve mathematical model, the nonlinear flow characteristics induced by the geometrical features in various flow areas were often ignored. To overcome this problem, the uniform nonlinear flow mathematical model for the electro-hydraulic proportional valve is constructed. The relational expression between the orifice flow of the proportional valve and the geometrical future and physical characteristics of spool is constructed to obtain a series continuous nonlinear flow equations of median positive overlap, negative overlap and zero overlap proportional valve. The experiment validates that, for positive overlap, the flow input into the hydraulic tank is proportional to the displacement of the spool in the dead zone. For negative overlap, even though the spool located at the median, the flow output also exists, and induces the piston movement of hydraulic tank. This situation is consistent with the non-matching overlap response of actual negative proportional valve.
Measuring the Risk Degree of the Green Supply Chain Management System Based Fuzzy Preference Relations
Authors: Su Cheng Shih , Shih Ching Tien , Hsu Shu Chen
Published: January 2014

Many organizations are developing their competencies in logistics and green supply chain management (GSCM) in order to maintain competitiveness. When an organization decides to implement GSCM, the administrators always encounter internal and external risk items or difficulties which they know even they dont know. This study therefore proposes an analytic hierarchy model to help the administrators understand the critical risk factors influence the GSCM system initiation, and an aggregative risk degree is indicated which risk grade they are in. Successful influences can help the enterprise under their competitive advantages to appropriate allocation of resources, to further improve the efficiency of resource utilization, and provide enterprises to choose business strategy of the green supply chain management has reached the goal of corporate operating performance and brand management.
Study of Complex Ability Evaluation Model of University Students Based on Fuzzy Theory
Authors: Li Xiao Guang , Xiao Ping Ping
Published: January 2014

Complex ability evaluation of university students is an important means of training talents to the related teaching department, and it has a very important role to improve the training quality of university and the quality of teaching. In this paper, by analyzing of the disadvantages of traditional evaluation method, an evaluation model is put forward a kind of based on fuzzy comprehensive evaluation of university student' complex ability, and give the evaluation model of the specific composition and the corresponding algorithm. The model is better than common evaluation tools to weigh the various factors in the case of making information not lossing. It can naturally deal with the initiative and fuzziness of the human mind, so it makes the every student evaluated get an objective and fair evaluation result.
Application of the Variation Coefficient Method to Comprehensive Evaluation of Wind Farms
Authors: Zheng Hui Ping , Xue Min , Han Yu , Zhang Wen Chao
Published: January 2014

The wind resource has the intermittence characteristic, and the electricity quantity of a wind farm is determined by the local wind resource. In practice, it is difficult to compare the economic operation situations of wind farms in different conditions. Evaluation indicators of economic operation for wind farms are discussed according to actual operation and monitoring situations of wind farms. The high/low frequency ride through of wind farms, the low voltage ride through of wind turbines, the SVC/SVG dynamic response characteristics and the ability of active power control are used for evaluation on wind farms. Then through consistency processing, dimensionless processing and weight calculating, a comprehensive evaluation method based on the variation coefficient method and the distance integrated evaluation method is established. The effectiveness of the evaluation system is verified by comparison of three different wind farms. Finally, the operation conditions of all the wind farms are ranked by the obtained relative approach degrees.
Collision Detection Analysis of 2D Layout Based on Convex Hull Plus Rubber Band Simulation
Authors: Lu Juan , Wei Jia Xun , Xia Wei , Ma Jun Yan , Ying Li , Liao Xiao Ping
Published: January 2014

It is an innovative design method in physics that product layout design is abstracted into convex hull plus rubber band simulation layout mode by setting up the optimized model. Based on the physics model of Newtons Second Law, this paper analyzed collision detection methods during the process of realizing reasonable layout, and it is founded that real-time collision detection and collision response during movement, produced components within the given beat, appeared to be the key content of resolving digital model design. In this paper, Area Difference method was adopted to detect when the collision occurred during component movement and what kind of state the component tended to be in collision. At the same time, it also determined the interference degree, solved critical point pose for collision response as well as its generation time and related torque and force, which can confirm the components continued movement model of rotation and sliding. Meanwhile, it employed the Judgment Matrix method to analyze collision response so as to confirm the collision interference relationship and collision action state, movement possessing mode (rotation, sliding and retraction, etc.) within the remaining time after collision with given beat during the layout process. All these provided with a practical solution for digital design of optimized model based on convex hull plus rubber band simulation compact layout.
Wake Potential for Dust Grains in a Flowing Plasma
Authors: Wang Gui Qiu , Shan Lian Zhi
Published: January 2014

The wake effect among dust grains in a flowing plasma is studied by the linear-response dielectric theory within the linear hydrodynamics model. The expression of potential is derived, and it can be divided into two parts: one is the screened Coulomb short-ranged repulsive potential, and the other is the long-ranged oscillatory wake potential. The numerical results show that both the amplitude and wavelength of the wake potential depend on the Mach number, in such a manner that the wavelength of the oscillating potential increases, while its amplitude decreases, with increasing Mach number.
Application of Ecological Vegetation for a Shipping Hub
Authors: Zhong Chun Xin , Xiao Shi Yao , Liu Jin Long , Zhang Wei
Published: January 2014

Hydrodynamic characteristic is an important reference to select vegetation material of ecological revetment engineering. In this paper, embankment will be divided into bottom-protection zone, key-protection zone, hydrophilic zone, landscape zone according to hydrodynamic characteristics of different water levels. Vegetations adapting to different protection area analyzed and discussed. With the example of ecological revetment in Naji reservoir in Guangxi, China, vegetation selection on different protection zone is demonstrated.
Study of Deformation Rule of Ordovician Limestone in Unloading of High Confining Compress
Authors: Yang Yu Chun , Cheng Xiang Min , Zhao Guo Bin , Qu Zhi Yong , Chen Shu Wen
Published: January 2014

Under unloading condition, the characteristics of rock are different from them under loading condition. This paper talks about the characteristics of Ordovician limestone under loading and unloading condition of high compress which were taken from North Tian Mountain. The testing results indicated that: The lateral deformation and bulk deformation of rock sample are clearly in the process of unloading. Plastic deformation is not notability in the unloading condition. After the peak value in the stress-strain curve, the stress decrease quickly, it is showed that the brittleness characteristic is the better remarkable under unloading condition than loading condition. Under unloading condition, deformation modulus E50 and Possion ratio μ is quadric with the confining compress.
Feasibility Study on the Implementation of Solar Building Integration in Northern Shaanxi
Authors: Yang Hong Xia , Long Yun Tao , Yan Zhu Ling , Gao Wen Zhong
Published: January 2014

Investigation and analysis of the Northern Shaanxi meteorological conditions and solar resources, combined with history and experience of solar energy resource in local solar energy application, the paper analyzes the feasibility of the implementation of solar building integration in northern Shaanxi.
Numerical Analysis on the Subgrade Settlements in Case of Different Tunneling Excavation Plans across Railway
Authors: Zheng Ming Xin , Chen Yang Qiang , Ou Yang Lin
Published: January 2014

Taking the draw water tunnel of the Jiulong river across railway in Fujian province as the research object,the influence of the subgrade settlement of Yingtan-Xiamen double railway and Xiamen-Shenzhen high-speed railway as a result of the double draw water tunnel excavation is analyzed by FLAC3D. Through numerical simulation the condition of whether the subgrade is reinforcement and whether have train load on the subgrade, the result of subgrade settlement in both single tunnel perforation and double tunnel perforation is derived. It shows that: the position of maximum settlement is just above the tunnel centerline, the proportion of subgrade settlement caused by the right line excavation is 67.5% and the one caused by the left line excavation is 32.5% when subgrade is unreinforced and there is no train load; the proportion of subgrade settlement caused by the right line excavation is 60% and the one caused by the left line excavation is 40% when subgrade is reinforced but there is no train load. The proportion of subgrade settlement caused by the right line excavation is 63% and the one caused by the left line excavation is 37% when subgrade is reinforced and there is train load. The results fit well with monitoring data and can be used as a reference for similar engineering projects.
Currently, with the rapid development of China's economic, the situation of other engineering projects crossing the existing railway line has been increasing. Most researchers is carried out through the way of on-site monitoring to analyze deformation of ground surface and the railway embankment, and then comes up with the safety assessment and displacement control measures of the tunnel construction[. The common methods of ground surface deformation analysis and prediction contain empirical formula, model test and numerical simulation[. There are a lot of numerical simulation achievements for new construction crossing the existing railway[3-, which mainly focused on the embankment settlement for single or multiple tunnel beneath a single railway line. Based on previous studies, this paper analyzes the railway embankment settlement under the condition whether there is reinforced roadbed or not, and whether the two-lane tunnel crosses many railway line with a combination of train load conditions through the method of three-dimensional model, and compares with the measured data to verify the reliability of numerical simulation.
1 Engineering project and its engineering geological conditions
Application of Derrick Crane Girder Method for Hoisting Precast Box Girders of Bridge
Authors: Wen Yu Qi
Published: January 2014

Combined with the engineering project of a bridge in Lanzhou, the derrick crane girder method in the special terrain conditions of the construction technology and process is introduced in detail, also the internal force of steel wire rope is calculated in detail. After applying in practical engineering, it proves that derrick crane lifting method is not only safe and reliable but also economical and feasible.
To Solve the Load of Beam by Shearing Force Diagram and Bending Moment Diagram - Reverse Thinking in Strength of Materials
Authors: Zhang Heng Wen , Shen Yue , Zhang Sen Wei
Published: January 2014

The paper has a discussion of forward problem and inverse problem for beams in strength of materials. Known load case of a beam can certainly determine its shearing force diagram and bending moment diagram, but conversely, there may be a variety of statically determinate or statically indeterminate constraint conditions. Furthermore, the solution from statically indeterminate constraint conditions doesnt agree with the given shearing force diagram and bending moment diagram in a general way.
The Brief Analysis of Performance-Based Seismic Reinforcement Theory
Authors: Liu Yan , Wei Lian Yu
Published: January 2014

Nearly 20 years, rare earthquake appeared frequently.The data shows that the world has entered a more active seismic activity period.The impact of earthquake damage to human life and property safety intensified, China is facing the same or even more pressing issue.Therefore, improving the seismic performance on active service structure reinforcement and reconstruction, to reduce earthquake damage, protect people's property security, to reduce the social and economic loss is of great significance. Performance-based seismic design theory, is a multi-index, multi-level seismic fortification system, it is reasonable, flexible development of seismic fortification goals.If apply this thought to structure of the seismic strengthening, forward-looking and innovative, has enormous social and economic benefits as well as the wide research prospects.
The Lateral Shift of Reflection Sh-Wave on an Interface of Two Media
Authors: Wang An Ling , Liu Fu Ping
Published: January 2014

Using the phase shift of reflection coefficient of SH seismic wave at the interface of strata, we derived the lateral shift of total reflected SH-wave, drawn the curves of lateral shift. The results show that for glancing wave or angle of incidence being near the critical angle, the lateral shift are very large.angle of incidence the lateral shift is the same order of magnitude as the wavelength (period).
Intelligent Modeling of Injection Molding Process Based on PLS-NN
Authors: Sun Xiao Fang , Hu Qian , Zhou Meng Fei , Pan Hai Tian
Published: January 2014

Considering the problems of small sample, non-linear, multi-variable coupling and dynamic of plastic injection molding process, an intelligent modeling methodology based on partial least-squares (PLS) regression and neural networks (NN) was presented to predict the quality index of injection-molded parts in this study. This modeling approach extracted relatively few latent variables as inputs of intelligent model by using correlation analysis and principle components extraction. Then a constructive approach and program was used to optimize training process and improve the precision of modeling. Furthermore, the performance of quality prediction model was evaluated and tested by its application to verification tests. Compared with normal neural networks, PLS-NN model has better prediction performance and generalization ability, the simulation result proved that this approach was effective.
PD Characteristics in Transformer Oil under AC Condition
Authors: Liang Ji Chong , Wang Tian Zheng , Wang Kang Ning , Li Jun Hao
Published: January 2014

Partial discharge (PD) detection is a technique widely used for high voltage equipment insulation condition assessment. The metal protrusion is a situation that often appear in transformer. Metal protrusion will cause the electric field concentration and lead to partial discharge. In this paper, PD characteristics in transformer oils are examined under AC conditions, using a needle-to-plane electrode system. The PD activity in transformer oil is confirmed as appearing in pulse burst form and the PD number and amplitude will increase with the applied voltage increase. The PRPD pattern display behavior typical of corona PD in oil.
Appropriate Electric Energy Conservation Measures for Big Mosques in Riyadh City
Authors: Al-Shaalan A.M. , Wakeel Ahmed , Alohaly Abdulhameed
Published: January 2014

The Ministry of electricity and water in the Kingdom of Saudi Arabia (KSA) reported (2013) that high temperature in summer months leads to an enormous increase demand in the air-conditioning electric load [. This work is aiming for investigating a possible mitigation to this critical problem. In this work, one of the Riyadh city (the capital of KSA) big mosques is identified as a model to explore the most appropriate ways to conserve energy since the mosques are established in dispersed locations of the KSA cities and operate simultaneously in prayers times. For the purpose of investigating several ways to reduce the energy consumption in these mosques, this study used the software named eQUEST (Quick Energy Simulation Tool) to investigate the effect of zoning areas, different types of roof construction, window glasses size and sunshield, heat transfer coefficient of the mosques walls, roof and windows, impact of insulation material and thickness. All of these factors help in reducing energy consumption in mosques and hence contribute in energy conservation and saving in billing costs.
Direct Electrochemical Reduction of Solid TiO2 in [BMIM]BF4-CaCl2 Ionic Liquid
Authors: Mu Jie Chen , Zhang Xu Dong , Zhang Li Peng
Published: January 2014

The direct electrochemical reduction of solid titanium dioxide (TiO2) is conducted in [BMIM]BF4-CaCl2 ionic liquid (IL) at 100 °C using sintered TiO2 as cathode and graphite rod as anode at an electrolysis potential of 3.2 V. Cyclic voltammetry is used to investigate the mechanism and feasibility of the direct electrochemical reduction of solid TiO2 in [BMIM]BF4-CaCl2 IL at 100 °C. The surface morphologies of the cathode are examined by scanning electron microscopy（SEM）. The crystal phase structure of the cathode is examined using a D8 Advance X-ray diffractometer(XRD). The results indicate that the direct electrochemical reduction of solid TiO2 in [BMIM]BF4-CaCl2 IL is feasible. A significant increase in conductivity is obtained by doping graphite into the cathode, thereby enhancing deoxidation. TiO2 reduction is conducted step by step, from outside to inside, and from high to low valence variation.
Analyzing of Energy Band and Density of States of ZnO
Authors: Lan Zhi Huan , Hou Man Yi , Wang Hong Yan , Ji Yi Guo
Published: January 2014

The electronic structure of ZnO is calculated by using an accurate full-potential linear plane-wave based on the density function theory and WIN2K package. The curves of energy band and density of states of ZnO are gained. The energy gap is 0.9eV that is better some of the computed results by theory approaches and smaller than the experimental value obtained by X spectra. After analyzing it is known that the coulomb repulsion between 3d state of Zn and 2p state of O is very strong leading to the increase in the energy of O2p and the energy gap become smaller.
Effect of V/Mo Ratio on Structural Properties of VxMo(1-x)Oy Nanoparticles Used as Alkaline Fuel Cell Catalyzer
Authors: Beyribey Berceste , Saygi Berrin , Acikyildiz Selen Ezgi , Culcu Lusi , Mutlu Bayram , Vardar Duygu Sena , Sarac Hanifi
Published: January 2014

V0.3Mo0.7O3and V0.6Mo0.4O3nanoparticles were synthesized through reducing acidified vanadate and molybdate solution at around 60-70°C. The catalysts are aimed to be used as anode in alkaline fuel cells. BET and SEM analysis are done to characterize the obtained particles. According to the SEM results, both compounds were formed in nanosized particles and BET results showed that BET surface area of V0.3Mo0.7O3catalyst has 5 times higher than that of V0.6Mo0.4O3.
Power Equipment Technical State Assessment Principles
Authors: Dmitriev Stepan A. , Khalyasmaa Alexandra I.
Published: January 2014

This article is devoted to the principles of power equipment technical state assessment at 35-220 kV substations. The article deals with the network hybrid model construction using methods of fuzzy logic and artificial neural network. Finally, in order to construct the knowledge base, a methodology of the power equipment technical state assessment, based on the membership functions, is introduced.
Stress State of Turbine Blade Root and Rim Considering Manufacturing Variations
Authors: Zhou Qin , Zhao Wei
Published: January 2014

Three-dimensional thermoelastic analysis on the fir-tree root and rim of the I-P cylinder’s first stage blade was performed in two cases of load condition: only centrifugal force and both centrifugal force and temperature load, and five different manufacturing variations were taken into account. The results show that: with high temperature, the stress level of root which is well-designed under room temperature increase obviously, and the load of the four root teeth is unevenly distributed. Moreover, manufacturing variation between contact surfaces lead to serious stress concentration and extremely high stress, and load distribution of the four root teeth is completely uneven. In addition, the influence of temperature on the stress distribution of blade root and rim is much different with different manufacturing variations.