bluuebunny/crossref_metadata_2025 huggingface dataset:
Seismocardiogram and Ballistocardiogram Sensing
Authors: Postolache Octavian , Girão Pedro , Postolache Gabriela
Published: June 2013

The paper describes the latest development in seismocardiography and ballistocardiography, including sensors with or without mechanical contact with the body, for cardiac functions monitoring in common daily activity. The authors discuss the information related with the seismocardiogramn (SCG) and ballistocardiogram (BCG) and the work on SCG and BCG modeling. The latest advances reported on the devices aiming at BCG and SCG cardiovascular system evaluation are covered, highlighting their key features and novel concepts. The authors also underscore the applications of ElectroMechanical film (EMFi) sensors, MEMS accelerometers and radar sensing technology for vital signs monitoring. Discussion on the current developments and future improvements are included in the paper.
Determination of Uncertainty in Gross Calorific Value of Coal Using Bomb Calorimeter
Authors: Mandavgade N.K. , Jaju S.B. , Lakhe R.R.
Published: June 2013

A bomb calorimeter is an apparatus used for measuring the performance of coal in term of heat of combustion. Recent awareness has been created regarding uncertainty of measurement, due to mainly two reasons. Laboratory accreditation, which has steadily been on the rise, which requires a estimation of uncertainty of measurement particularly in the field of calibration. Second, increased maturity level of the quality system certification as the manufacturing companies looking at the reliability of measurement through correct calibration of inspection, measuring and test equipment. The quality of coal is decided by the various parameters such as ash content, air dried moisture, volatile matter, gross calorific value and sulphur content etc. The grade of coal is decided by the quality of coal which decides the performance of generation of electricity. The uncertainty of measurement in bomb calorimeter gets affected by various parameters. This paper describes the methodology, uncertainty calculations and effects of individual factors on it.
Factors Influencing Tourists’ Motivational Determinants for Promotion of Tourism Destination
Authors: Ray Nilanjan
Published: June 2013

The concept of rural tourism has become one of the vital issues of economic and social benefits to society. This present study identifies different motivational factors that may directly or indirectly influence the tourists’ motivation. The primary objectives of this study include the growth, development, and emergence of rural tourism potentials at Kamarpukur as well as to analyze the tourists’ flow pattern and also examine the existing and future requirements in the motivational point of view. For fulfillment of the basic objective, data for the study were collected through field survey. The sample size was restricted to 200 respondents. Information gathered about tourists’ motivational factors include culture, tourism amenities, destination, and religion. The collected data have been analyzed using different statistical methods like percentage and Chi-square. The major findings of this study show, in the present scenario of above factors, how to attract more tourists for repeat visits and promote infrastructural requirement for better tourism service to increase the level of tourists’ motivation as well. In the policy implication point of view, this study is relevant for balancing the demand and supply of tourism motivational requirement indicators, which can offer better service excellence in the study area.
Business to Rural
Authors: Sarkar Kallol
Published: June 2013

In this chapter, the author investigates the socio-economic impact of the organization on the life of the common people of Uttarakhand, a Simayal village. The author also explores the salient feature or uniqueness of B2R that differentiates it from other urban BPOs in India. The author went through the different processes followed by B2R and highlights the modification they have made from their urban counterparts to determine whether they are following the best practices or not, and if not, where they are lagging. Analyzing the market trends, the author questions if the concept of rural BPO can be an alternative to the highly growing cost structure of the urban BPO sector. By means of local reference, the author focuses on the way the work culture and environment bring about differences in the productivity of the BPO. Finally, the author evaluates the growth story of B2R—how it could become so successful under the initially unfavorable conditions of the remote Himalayan village.
Modeling Complex Errors for Information Integrity Analysis
Authors: Khurana Reema , Mandke Vijay V.
Published: June 2013

This chapter is aimed at identification of a method for problem solving strategies to moderate the complex error resulting from change in environment by analysis, identification, and communication. The method is based on analysis through integrity of information. Integrity of Information (I*I) is defined as accuracy, consistency, and reliability of information at a given instance. The I*I value of any piece of information (in a work-related process) is subject to the 5 Cs in the environment, namely Complexity, Change, Communication, Conversion, and Corruption. The method provides an inventory about complex errors to modulate the complex error from the problem domain and share the right information at the right time with information integrity and also to project the need for an environmental view of information system design for large and complex enterprises.
An Indian Legal Perspective to Protection of Domain Name
Authors: Aggarwal Rashmi , Kaur Rajinder
Published: June 2013

Domain names are no longer treated as only providing an address for computers on the Internet but are treated as trademarks in relation to commercial activity of a particular company or business. With the expansion of telecommunication, it has become essential for business houses to protect their trade name from cyber squatters or cyber pirates. Some of the countries like US have developed a specific legislation for the protection of domain names, but in India the Information Technology Act, 2000, is limited to e-commerce only and fails to acknowledge this sensitive issue. The present chapter is an attempt to highlight the problem of domain names, the legislation laid down in US, specifically to deal with the problem of cyber squatters or cyber pirates, and dispute resolution mechanisms laid down by ICANN. The chapter further suggests the need for specific legislation in India along with other alternatives.
Right to Internet
Authors: Verma Amita , Verma Amit
Published: June 2013

With the growth and development in technology, one of the most significant changes has been the commercialisation of Internet. There has been a revolution in Internet technology with the International Convention on Civil and Political Rights recognizing “Right to Internet” as a human right. There are countries like Antigua and Barbuda, Angola, Armenia, Colombia, the Czech Republic, the Dominican Republic, Estonia, Finland, France, Iceland, Liechtenstein, Panama, Poland, Peru, South Africa, Turkey, Trinidad and Tobago, Slovakia, and the United Kingdom, which already have legislations promoting the cause of Internet to every citizen. This chapter aims to study the implementation and utility of the right to Internet being recognized as a fundamental right and the principles behind it. It also intends to study the method of implementation of this right keeping in mind the situation prevalent in China, which restricts Internet usage. The chapter would also make suggestion with regards to the remedies available to the people in the cases of the countries not recognizing the right.
A Model-Based Approach to Aligning Business Goals with Enterprise Architecture
Authors: Clark Tony , Barn Balbir
Published: June 2013

Modern organizations need to address increasingly complex challenges including how to represent and maintain their business goals using technologies and IT platforms that change on a regular basis. This has led to the development of modelling notations for expressing various aspects of an organization with a view to reducing complexity, increasing technology independence, and supporting analysis. Many of these Enterprise Architecture (EA) modelling notations provide a large number of concepts that support the business analysis but lack precise definitions necessary to perform computer-supported organizational analysis. This chapter reviews the current EA modelling landscape and proposes a simple language for the practical support of EA simulation including business alignment in terms of executing a collection of goals against prototype execution.
Perturbation Analysis for Spectrum Sharing
Authors: Keshavarz Hengameh
Published: June 2013

The main challenge in operating cognitive ad-hoc networks is the lack of a centralized controller performing resource allocation for different users in the network. In this chapter, a distributed power allocation scheme is considered for secondary users and its performance is analyzed when time average channel gains are substituted for instantaneous channel gains. In this way, it is not necessary to exchange channel information; however, users’ allocated power will be perturbed. It is of interest to analyze mathematically this perturbation and to show how it affects the network performance. In particular, an upper bound on perturbation of each user’s allocated power is obtained. Then, it is shown that how this perturbation affects throughput and the interference constraint for the secondary network.
Optimal RF Beamforming for MIMO
Authors: Ahmadi-Shokouh Javad
Published: June 2013

Secondary receivers in Multiple-Input Multiple-Output (MIMO) Cognitive Radio (CR) networks combat interference from primary transmitters while equipped with whitening filters. However, when the MIMO secondary users are employing Radio Frequency (RF) beam-forming networks at the transmitter/receiver front ends to improve the MIMO transmission performance, the whitening filters cannot perform interference cancellation. In this chapter, transmit/receive optimum RF beamforming is proposed for a MIMO spatial multiplexing system. The performance of the optimally designed RF beamforming technique is evaluated over a Rician channel via computer simulations. Simulation results are assessed for different RF beamforming structures and the number of primary transmitters causing interference on the secondary receiver.
8 States Triple Binary Convolutional Encoders for the Construction of Turbo Codes
Authors: Balta Horia , Balta Maria
Published: June 2013

This paper presents the rate 3/4 (triple-binary) memory 3 recursive and systematic convolutional encoders with a single shift register (TBEm3) implemented in the observer canonical form with the best frame error rate (FER) versus signal to noise ratio (SNR) performance in configuration turbo (parallel concatenated) The triple-binary turbo-codes (TBTC) were compared in terms of performance with the turbo-codes (TC) from the actual standards of communications, at the same turbo-coding rates of 3/5 and 3/4. Besides the very good FER/SNR performance, the TBTC present several other advantages that recommend them: an effect error floor low, latency diminution, more compact blocks lower delay caused by interleaving, the possibility to connect the encoder TBTC to modulation blocks of higher order.
Mechanical Behavior of New Composite Materials Reinforced by Waste Glass Fibre
Authors: Sabau Emilia , Bâlc Nicolae , Bere Paul
Published: June 2013

In this paper the authors propose a new material which includes waste composites reinforced with glass fibres, sand and polyester matrix. Through a new manufacturing method were obtained composites plaques. The experimental tests of compressive strength to the material were presented. Also, the authors presented a study of reinforcement degree.
Load Carrying Elements and Structural Modular Systems Made of Synthetic Fibres Reinforced Mineral Matrix Composite
Authors: Taranu George , Lungu Irina , Ţăranu Nicolae , Budescu Mihai
Published: June 2013

The use of recyclable materials is a priority for the construction industry aiming to a sustainable development. Recent works have shown that calcium sulphate in the β anhydride III form which is a hydraulic binder manufactured from industrial wastes can partially replace ordinary Portland cement in construction elements. Alkali resistant glass fibres can be used as reinforcement for ecological mineral matrix in order to obtain a mineral composite material. In the framework of an extensive research program, load carrying elements and structural modular system entirely made of mineral composite material were designed, developed, tested, analyzed and implemented. The paper presents the selection of efficient mixes for a mineral matrix with convenient mechanical properties, good workability and encouraging prospects to be implemented in construction elements and full structural systems. The experimental work carried out confirms the suitability of this material for load bearing elements and modular building systems.
A 2K-h Single-Row Planetary Gearbox Optimal Design with Genetic Algorithms
Authors: Buiga Ovidiu
Published: June 2013

In conventional methods, designing a gear drive such as a 2K-h single-row planetary gearbox requires a very large number of calculations based on recommended gear standards, trial and error methods, etc. This time consuming process may often finish up with inadequate design outcomes. Therefore, in this paper a Genetic Algorithm (GA) methaeuristics is considered in order to resolve this complex design problem. The GA was used to find the optimal values of 14 genes (i.e. design variables) that define the planetary gearbox. The optimal design of the power transmission was evaluated considering the mass minimization criterion. The results of the optimised planetary gearbox suggest a reduction of the mass with 15.16% as compared with the situation when the traditional design was used.
Construction of a New Type of Modular Tubular Machine
Authors: Popa Dan Cristian , Gliga Vasile Ioan , Szabo Lorand
Published: June 2013

A new type of tubular machine in modular construction that can work either like motor or generator is presented in the paper. It belongs to the transverse flux machines class and operates based on the variable reluctance principle. Two topologies of the machine, with and without permanent magnets (PM), are approached here. A prototype of the tubular machine with electromagnetic excitation, having a stator core built from laminated sheets and the mover core made of soft magnetic composite material, was built and is shown in the paper. The use of the new soft magnetic composite material, Somaloy 700 HR, having 3D magnetic isotropy, brings important advantages in building the structure. The innovative construction, implying the alternation of the magnetic pieces called modules with no-magnetic spacers, has very good performances. A prototype of this machine was built and a test bench equipped with control and monitoring devices in order to perform experimental tests. Some possible applications showing the potential of the proposed machine are also presented.
Matlab Toolbox for RF Receiver Modeling
Authors: Kirei Botond Sandor , Neag Marius Gheorghe , Topa Marina Dana
Published: June 2013

In this paper a novel RF receiver modeling approach is presented. The novelty consists in the usage of the object oriented programming instead of the usual imperative programming. Classes were defined for entities as signal, non-ideality and RF/analog block, in order to achieve a basic RF receiver model. The main circuit non-idealities were identified, non-ideality parameters and their analytical models were encapsulated into classes. The effectiveness of the proposed modeling approach was demonstrated by developing in MATLAB a fairly complete model of a direct conversion receiver.
3D Non-Contact Building Survey Technique
Authors: Tamas Levente , Lazea Gheorghe
Published: June 2013

This paper presents a non-contact 3D environments mapping technique using mobile robots with different perception devices such as stereo camera, structural light camera or custom made 3D laser scanner. The custom developed non-contact scanning device is suitable for making building surveillance both in small and large scales. These measurements can be further used for urban region planning as well as for navigation purposes for autonomous agents such as mobile vehicles.. The large maps can be built from successive scan merging in an iterative manner. For such an approach is essential the initial matching between two measurements, which in our proposed method was performed using special extracted features from the measured data sets. The registered maps can be further used for perceptual purposes, including object segmentation or planning maps for the mobile agents. For both types of applications, there are given experimental results obtained from the proposed registration and segmentation algorithms.
Advanced Learning Tools for (Non) Formal Education
Authors: Porumb Sanda , Porumb Cosmin , Vlaicu Aurel , Orza Bogdan
Published: June 2013

An important part of the articles published in the last years highlight teaching and learning approaches and technologies integrated in complex applications and present the concepts used for creating and presenting the educational content. They refer to the methodologies used in self-and collaborative learning, including problem-and project-based learning. The assessment process is also illustrated in several articles but there is no a generic framework that complies with the rules of both formal and non-formal education acts. Our proposal is focused on advanced concepts for improving the educational services and the manner a generic framework for blended learning can be customized for higher education and lifelong learning. In addition, the paper proposes a virtual collaboration prototype that supports interpersonal and inter-process collaborative learning services that can be used as core of any rapidly growing educational community.
Applied NURBS on the Research of Interactive Curved Hull Computer Aided Design
Authors: Dong Zhi Hui , Han Duan Feng , Yuan Li Hao
Published: June 2013

Based on NURBS algorithm, this paper processes and renders curved hull in OpenGL platform, and applies Tree-Structure to manage all the real-time geometric data. And what is more, extend the functions into curved ratio check, the model's parameter adjustment and output etc. At last, results of instances will be given to illuminate the effects.
Contouring Control of Biaxial Systems with Modified Reference Commands
Authors: Chen Shyh Leh , Hsu Hsien Sheng , Chiu Hung Shen , Yang Ren Dar , Yen Chun Tai
Published: June 2013

This study is concerned with the contouring control of biaxial motion systems. It is well known that contour errors depend not only on the controller, but also on the reference command. Two problems are investigated in this paper. First, it is to find the reference command that will yield the minimum contour error. This is the problem of interpolation and acceleration/deceleration. Second, given a reference command, it is to find a modified reference command so that the system output will be as close to the reference command as possible. The design of the modified reference command utilizes the inverse model of the closed-loop system. In other words, the modified reference command can be considered as the output of the inverse system with the desired reference command as the input. It can be obtained by the convolution technique.
A Simplified Method for Joint Optimization of Production Schedule and Preventive Maintenance in Tobacco Flow Shop
Authors: Da Jia Min , Wang Li Ya , Zhao Shi Xiong
Published: June 2013

The joint optimization problem of product schedule and preventive maintenace in the flow shop is NP hard. In this paper, a joint optimization model was firstly established by abstracting the tobacco production process into a equivalent two-machine flow shop. And then a simplified method was proposed to solve the model according to the characteristic of the problem. Finally, a case was used to verify the validity of the model and the effectiveness of the method.
Study on Optimizing the Process Parameters for the Band Saw Equipment
Authors: Chen Guo Jin , Ni Jing , Liu Ting Ting , Chen Hui Peng , Gong You Ping
Published: June 2013

Aiming at the lack of the mature process parameters optimization design and the dedicated digital control system for the band saw equipment at home, the dynamic model of the sawing process is established. The correlativity of the cutting quality with the cutting process parameters is analyzed. The optimization design of the cutting process parameters and the dedicated digital control strategy for the appropriate band saw equipment are studied to form the independent intellectual property rights on the parameters optimization technology for the sawing equipment process and the numerical control system based on the technology. That provides the technical support for improving the processing accuracy, efficiency, and reliability of the band saw equipment.
Failure Mechanism and Control Techniques of Reused Roadway in an Isolated Coal Barrier Pillar
Authors: Yan Shuai , Chong De Yu , Han Zhi Ting , Zhang Ji
Published: June 2013

Reused roadway in double-U shaped layout with an isolated barrier pillar subjects to two adjacent panels mining and has large deformation. In order to keep the reused roadway stable in its service life, numerical simulation, theoretical analysis and field observation were applied to investigate the deformation rule and failure mechanism of surrounding rock during mining period. Research results show that low strength and high stress difference environment is a fundamental reason of shear failure, different loading and unloading path in both ribs of roadway is the primary reason of asymmetric failure, and performance of bolting support is critical for the roadway stability. Therefore, control techniques of reused roadway are put forward that 1) high-strength and yielding bolts support the roof and ribs to adjust to massive convergence of roadway; 2) yielding counter-pulled cables reinforce small-pillar rib to strengthen the stability of samll coal pillar; and 3) hydraulic expansion bolts support the floor. The results have been successfully applied to a field trial.
Application of MATLAB-Based Regression Analysis Model in Enterprises
Authors: Jiang Ling
Published: June 2013

Prediction analysis is the prerequisite and basis of decision-making. Regression analysis is one of quantitative forecasting methods for prediction and forecasting of the variable change based on causality. Regression analysis can be adopted to build mathematical models for prediction analysis for the product output and cost, the product sales, the economic benefits of every product line, etc. This paper studies the enterprises production and business operation activities by using linear regression analysis method, with some practical examples to illustrate the solution with application of MATLAB software.
Linear Programming Application in Construction Enterprises
Authors: Jiang Ling
Published: June 2013

Constructional engineering is becoming the key industry in the national economy. But, construction enterprises are lagging far behind those industrial enterprises with refined management and computer integrated manufacturing system. Operations research is mainly concerned with management problems and involves the construction of mathematical models and the application of mathematical tools and modern computer technology. In this paper, the optimal plan of steel cutting is studied based on of linear programming, and a calculation example is given to illustrate the solution with the help of MATLAB software.
Design of a Parallel Manipulator Based on Multi-Objective Self-Adaptive Differential Evolution Algorithm
Authors: Meng Qing Mei
Published: June 2013

In order to improve highly non-isotropic input-output relations in the optimal design of a parallel robot, this paper presents a method based on a multi-objective self-adaptive differential evolution (MOSaDE) algorithm.The approach considers a solution-diversity mechanism coupled with a memory of those sub-optimal solutions found during the process. In theMOSaDE algorithm, both trial vector generation strategies and their associated control parameter values were gradually self-adapted by learning from their previous experiences in generating promising solutions. Consequently, a more suitable generation strategy along with its parameter settings could be determined adaptively to match different phases of the search processevolution.Furthermore, a constraint-handling mechanism is added to bias the search to the feasible region of the search space. The obtained solution will be a set of optimal geometric parameters and optimal PID control gains. The empirical analysis of thenumerical results shows the efficiency of the proposed algorithm.
The Transmission Precision Test Research of High Precision FA45-29 Prototype
Authors: Xuan Liang , Lei Lei , Guan Tian Min , Li Jiang Bo
Published: June 2013

In order to test the correctness of modification parameters, this paper designs respectively test schemes to measure transmission error and geometric rotary error in accordance with the performance requirements of the FA cycloid-pin gear planetary drive reducer. And we design the drive chain connecting parts which accord to the physical size of this prototype. Then the two tests have been done to prove the correctness of the theory.
Research on the Effect of Pump Block Material Selection on Pump Spindle Stress
Authors: Ding Yu Qi , Qiu Feng , Liu Ju Bao , Wang Yun Cong , Tao Liang Quan
Published: June 2013

Built up three-dimensional non-linear contact finite element analysis model of the spline shaft and the spline set of the electric pump machine and get the stress distribution of the spline shaft and the spline set when the shaft of electric pump retorts. The maximum stress occurs in the root of linking side of spline and the transition section. According to the calculation and contrast analysis of different material and same material of spline set, the maximum stress of the different material declines by 20.04% than the same material, and the root stress concentration coefficient declines by 13.72%, and this provides theoretical basis and analysis method.
Development of a Closed-Loop Simulator for a Separately-Excited DC Motor Drive System
Authors: Joochim Chanin , Suwanma Adisak , Worrakul Nawarat
Published: June 2013

This paper presents a new simulation program, called ONIM, for a feedback (i.e., closed-loop, PI) control system. ONIM is a graphical design tool like Simulink in MATLAB, which allows a user to simulate a feedback control system with real-time response. The outputs from ONIM can be provided both in numerical and graphical forms. In this paper, the software modules are developed in ONIM for tuning PI controllers, and simulating the digital filters for a separately-excited DC motor drive system. Simulation results obtained by ONIM are compared with the results obtained by MATLAB/Simulink. The results show the high reliability and robustness of the ONIM simulation.
Modeling, Simulation and Optimization of Corner Milling
Authors: Li Tao , Liu Qiang , Ma Liang Dong , Zhang Xue Feng , Yin Jia , Cui Sheng Fu
Published: June 2013

Considering the wide application of corner milling in the numerical control machining, it has great significance to predict the force variation and optimize the cutting parameters before the actual milling. This paper establishes the general algorithm to predict the variation of cutting width, with which the force of the cutting process can be acquired. Then the results of the prediction are validated through five different experiments with different parameters like feed rate and cutting depth etc. Especially, a way to optimize parameters of the corner milling process is proposed and verified by general prediction algorithm.
Research on Automobile Aerodynamic Drag Reduction Based on Isobaric Surface of a Blunt Body
Authors: Hu Xing Jun , Liao Lei , Li Xiu Cheng , Yang Chang Hai , Guo Peng , Yang Bo , Wang Jing Yu , Liang Dong
Published: June 2013

This paper focuses on a new method of aerodynamic drag reduction. In this paper numerical simulation method is adopted to investigate the relationship between the aerodynamic drag characteristics of a blunt body and the distribution of total pressure around the body. The study shows that when the shape of a blunt body is modified to be close to its isobaric surface, the pressure drag of the body can be reduced largely while the viscous drag increases slightly, and the summary of the drag gets lower as a result. This conclusion will have profound guiding significance in the aerodynamic shape designing and the aerodynamic drag reduction of an automobile.
Influence of Hole Size on Crack Propagation Mechanism of Nano-Single Crystal Copper
Authors: Li Ge , Hou Xian Qin , Liu Zhi Min
Published: June 2013

By molecular dynamics method, the tensile processes of nanosingle crystal copper with the crack front existence hole were simulated, and the effect of different hole size on crack propagation mechanism was analyzed. The results indicate that as the hole position remain unchanged, the hole diameter was more bigger, the atomic staggered and the crack tip deactivation were more obvious under tensile loads caused more dislocation glide appeared, meanwhile the number of slide-line was more and the trend of crack branch extend to hole position was more obvious.
Microstructure and Magnetic Properties of Microwave Sintered Ni0.5Zn0.5Fe2O4 Ferrite
Authors: Peng Yuan Dong , Xia Qing Lin , Li Li Ya , Lou Ming , Hu Jing Zhi , Yi Jian Hong
Published: June 2013

Ni0.5Zn0.5)Fe2O4 ferrite has been sintered via microwave irradiation. The structural, component and magnetic properties of NiZn ferrite was determined by SEM, X-ray powder diffraction (XRD) and automatic hysteresis loop magnetometer. Results showed that the material sintered by microwave energy at 1220°C for 20min had a high purity (Ni0.5Zn0.5)Fe2O4 phase. The sample obtained magnetic properties of intrinsic coercivity 222A/m, saturation magnetization 332mT, initial permeability 0.20mH/m and maximum permeability 0.58mH/m. Compared with conventional sintering method, microwave sintering of NiZn ferrite is more efficient and reducing soaking time.
The Anti-Microbial Property of ZnO Nanoparticles Deposited Bamboo Pulp Fabric
Authors: Zhang Guang Yu , Morikawa Hideaki , Chen Yu Yue
Published: June 2013

The article presents a simple way of synthesis ZnO nanoparticles on bamboo pulp fabric. In this synthesis, multi-amine compound (HSDA) was applied as a stabilizer and a reductant. The syntheses, performed at various initial Zn (NO3)2in 2 g/l HSDA aqueous solution. Transmission Electron Microscopy (TEM) and scanning electron microscopy (SEM) indicated that ZnO nanoparticles had been formed on bamboo pulp fabric. The antibacterial activity of ZnO nanoparticles deposited fabrics was tested. The results indicated that the ZnO-treated fabric showed good bacterial reduction of Staphylococcus aureus and Escherichia coli.
Electronic Structure and Optical Property of Phosphorus Doped Semiconducting Graphene Nanoribbons
Authors: Chen A Qing
Published: June 2013

The electronic structure and optical property of phosphorus doped semiconducting graphene nanoribbons were calculated by using the density functional theory. Energy band structure and optical spectra were considered to show the special electronic structure of phosphorus doped semiconducting graphene nanoribbons. Our results showed that the Fermi energy of phosphorus doped semiconducting graphene nanoribbons entered in the conduction bands, and that the optical coefficient depend on the width of armchair graphene nanoribbons. It is concluded that the phosphorus doped semiconducting graphene nanoribbons behave p type semiconducting. Therefore, our results have a great significance in developing nanomaterial for fabricating the nanophotovoltaic devices.
Effects of Precursor Infiltration and Pyrolysis Cycles on Properties of Hollow Silica Fiber Reinforced Nitride Composites
Authors: Zou Xiao Rong , Zhang Chang Rui , Wang Si Qing , Zhu Hui , Tao Cheng An , Sheng Li Ping , Xiao Hua
Published: June 2013

2.5-Dimension hollow silica fiber reinforced nitride (2.5D HSFRN) composites were fabricated by repeated infiltration and pyrolysis from hybrid polyborosilazane precursor. The effects of precursor infiltration and pyrolysis (PIP) cycles on densification behavior, mechanical properties, dielectric properties, and microstructures of the composites were investigated. With increasing PIP cycles, the density of 2.5D HSFRN composites increases, the mechanical properties increase accordingly, however, the dielectric properties decrease. The composites prepared after three PIP cycles, which have moderate flexural strength of 77.4MPa and elastic modulus of 20.7GPa, low dielectric constant of 2.98 and loss angle tangent of 3.9×10-3, exhibit suitable mechanical and dielectric properties. The calculation results of dielectric performance show that 2.5D HSFRN composites have good broadband wave-transparent properties, which result from high purity hollow silica fibers with excellent dielectric properties and low density nitride matrix.
Density Function Theory Study on the Recognition of the Urea-Based Involving Bromine Derivation Receptor for the Halogen Anions
Authors: Yuan Kun , Li Hui Xue , Tang Huian , Zhu Yuan Cheng
Published: June 2013

The recognition mechanism of the urea-based involving Br derivation receptor (A) for the halogen anions through hydrogen bond and halogen bond was discussed by the density function Becke, three-parameter, Lee-Yang-Parr (B3LYP) method. The results showed that the guest-host recognition was performed by using four coordination weak bonds, which include two N-H...X hydrogen bonds and two C-Br...X halogen bonds (X= F-,Cl-,Br- and I-). The calculated interaction energies (ΔECP) with basis set super-position error (BSSE) correction of the four systems are-3.95, -82.43, -70.86 and 992.63 kJmol-1, respectively. So, the urea-based derivation receptor (A) presents the best recognition capable for the Br- and Cl-, and it can not recognize the I- in the same condition. Natural bond orbital theory (NBO) analysis has been used to investigate the electronic behavior and property of the red-shift N-H...X hydrogen bonds and two blue-shift C-Br...X halogen bonds in the A...X- systems.
Effect of Field Strength on Polymer Aggregation in Electrohydrodynamic Spraying of Thermoplastic Polyurethane
Authors: Jadhav Amit , Wang Li Jing , Padhye Rajiv
Published: June 2013

Polymer solution interacts with the electric field in an electrohydrodynamic (EHD) spraying process. Charged polymeric solution forces polymer liquids to move, break into spray of fine droplets. EHD spraying has the ability to generate very small & uniform droplets of polymeric solution. It is envisaged that EHD Spraying is a promising technology to coat a polymer on substrate at submicron range. The polymer aggregation is important while coating. The process parameters including applied voltage, nozzle-collector distance, solution flow rate, and solution concentration plays an important role in polymer droplets aggregation on surface. Field strength is also plays important role while EHD spraying. Field strength is the rate of change of potential with respect to distance. This research paper investigates the effect of field strength on aggregation of polymer droplets.
Design Optimization of Modular Bridge Structure
Authors: Riaz Faisal , Riaz Ahmad , Alam Khurshid , Abid Atif Sohail
Published: June 2013

Modular bridge structures are commonly used in areas where space and weight are major limitations. In this study, a modular bridge structure made of extruded aluminum alloy AA7005 was analyzed using numerical simulations. Parametric model of the bridge structure was produced and optimized for required loading conditions. The aim of the research work was to minimize the weight of the bridge structure without compromising its strength. Sensitivity analysis was performed by taking thickness of the structure member as optimization variable. Optimum thickness of the bridge member obtained from simulations was assigned for the analysis of the entire structure. Results obtained from Finite Element (FE) simulations predicted maximum stress at the center of the structure. Parametric modeling of the structure allowed to asses failure against different loading conditions.
Study on the New Green Materials and New Energy
Authors: Yuan Yong Yan
Published: June 2013

China is located in a beautiful ecological environment, the use of ecological resources is also very rich, the construction of the new era should be adapted to the needs of sustainable development, and makes full use of ecological building materials. Selection of green Eco building materials, the choice of suitable building materials for the different geographical, climatic conditions, architectural forms all reflect the architectural and environmental coordination. Therefore, pay reasonable housing design according to the user's ability. This article provides an overview of several can be used as a new era in China construction of ecological building materials, energy, and its characteristics and applicability, and hopes to help China's socialist construction.
Study on Carbon Fiber Composite Materials in Sports Equipment
Authors: Zhang Jiang Zhi
Published: June 2013

The modern sports competition constantly challenges the limits of humanity, and professional sports equipment proposed higher requirements. Traditional sporting goods mostly are made of wood and wood composite materials and subject to the limitations of the material physical characteristics, athletic performance is difficult to have a substantive breakthrough. Carbon fiber-reinforced composite materials by virtue of its high temperature resistance, corrosion resistance, light weight, high mechanical strength outstanding advantages emerge in the new material, in the sport of rowing or sailing, bike, badminton, skiing, golf, sleigh, archery, everywhere this black fiber figure. Therefore, this article is a brief analysis of the specific application of carbon fiber composite materials in sports equipment.
Study of Uniform Design in the Optimizing Preparation Technology of the Rutile Titanium Dioxide Ternary Inorganic Coated
Authors: Duan Hai Ting , Hou Qing Lin , Liu Yue Jin
Published: June 2013

This paper researched the inorganic coated the rutile titanium dioxide process, a new inorganic coating (The rutile titanium dioxide ternary Inorganic coated were prepared by sol-gel method). The regression equation and the optimum conditions are founded by uniform design and the systemetical research of various factors on the properties of the rutile titanium dioxide ternary Inorganic Coated. Effect of The rutile titanium dioxide ternary Inorganic coated were characterized by nanoZS, Fourier infrared spectroscopic analysis (FT-IR) with NH3 as atom probe, scanning electron microscopy (SEM), transmission electron microscopy (TEM). The optimized formula of preparing the rutile titanium dioxide ternary inorganic coated is that the dispersant of 0.20%, the ZrO2 content of 0.6%, the SiO2 content of 3.0%, the Al2O3 content of 1.6%, the rotate speed of 340r/min when system temperature was 60°C-65°C, the seriflux concentration was 300g/L, the PH of the coated ZrO2 was 8.5-9.0, the PH of the coated SiO2 was 9.5-10.0, the PH of the coated Al2O3 was 6.0-6.5.
Research on Cu-Based Bulk Glassy Alloys and its Mechanical Properties
Authors: Cao Peng Jun , Dong Ji Ling , Wu Hai Dong
Published: June 2013

High-strength Cu-based bulk glassy alloys with a large supercooled liquid region in Cu-Zr-Ti-Ni systems were prepared by means of copper mold casting. The Cu-based bulk glassy alloys samples were tested by X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and Instron testing machine. The result indicates, the maximum diameter was 5.0 mm for the Cu55Zr25Ti15Ni5 bulk glassy alloy. The temperature interval of supercooled liquid region (ΔTx) is as large as 45.48-70.98 K for the Cu-Zr-Ti-Ni alloy. The Cu-based glassy alloys rods exhibited the very high mechanical properties and the distinct plastic strains. The compressive fracture strength is 2155 MPa, 2026 MPa and 1904 MPa respectively for Cu50Zr25Ti15Ni10, Cu55Zr25Ti15Ni5 and Cu54Zr22Ti18Ni6 bulk glassy alloys. The Vickers hardness is respectively 674, 678 and 685 for the Cu50Zr25Ti15Ni10, Cu55Zr25Ti15Ni5 and Cu54Zr22Ti18Ni6 bulk glassy alloys. The addition Co element to Cu-Zr-Ti-Ni alloy expand the ΔTx, the ΔTx is 74.5 K for Cu50Zr22Ti18Ni6Co4 bulk glassy alloys.
Study of the Variable Separation Solutions and Chaotic Behaviors for the Extended (2+1)-Dimensional Shallow Water Wave System
Authors: Zhu Xiao Xin , Ma Song Hua , Ren Qing Bao
Published: June 2013

With the mapping method and a variable separation method, a series of variable separation solutions to the extended (2+1)-dimensional shallow water wave (ESWW) system is derived. Based on the derived solitary wave excitation, some chaotic behaviors are investigated.
Application-Oriented Mechatronics Technology in Mechanical Engineering
Authors: Zhang You Wei
Published: June 2013

The development of modern science and technology has promoted the overlapping and mutual penetration among different disciplines, which led to the technological innovations in the field of mechanical engineering. The mechatronics technology conforms to the law of development of science and technology in today, and combines the mechanical technology and electronic technology together to integrate the logistics, energy flow and information flow. This paper briefly describes the concept of mechatronics and the elements of mechatronics technology, and elaborates on the application of mechatronics technology in three different areas of the Machinery Industry in the form of living examples, finally introduces the future developing direction of mechatronics technology.
Research on Fatigue Degree of Gear Materials
Authors: Lv Hai Ting
Published: June 2013

Gear plays an important role in the project, and its failure form has been widely concerned. This article does a detailed study of fatigue failure of the gear at home and abroad, and discusses the experimental method, numerical model, finite element simulation baking and does a forecast on its characteristics and prospects.
Data Acquisition System Based on Virtual Instrument
Authors: Li Yan
Published: June 2013

This paper introduces basic concepts and common principle of data acquisition, and according actual demand to use Labview to construct general data acquisition system, and giving specific description of the realizing process of voice data acquisition system based on virtual instrument.
Study on Accuracy Measure of Trigonometric Leveling
Authors: Zhou Xian Ping , Sun Ming
Published: June 2013

How to reduce the errors of the total station in vertical angle measurement is a main problem for improving the accuracy of trigonometric leveling. The leveling method combining the total station with a tracking bar is becoming increasingly more popular, and also the limitations of the traditional trigonometric leveling method have been shown. After a long period of exploration, a new method is proposed for trigonometric leveling. The results show that the error sources of trigonometric leveling are reduced by the method combining with the total station on any spot, and also instrument height and prism height are unnecessarily measured in each determination, so that the field workload and the error sources for improving accuracy are reduced, and then the accuracy of trigonometric leveling is further improved and the speed of implementing the leveling becomes faster. This height determination method is with certain applicability and reference value in the practical work.
Simulation of Accurate Navigation Technology for Aircraft Landing Approach
Authors: Li Ang Tai , Ma Xiao Jiao
Published: June 2013

The purpose of this paper is to find a solid application and improve the integrated navigation system of aircraft independent landing. The main researches are focused on the issue how to improve the accuracy and reliability of the integrated navigation system, by means of the detailed analyzing about information fusion, and investigating accurate navigation technology for independent landing approach of aircraft. Next, the integrated navigation system models SINS/DGPS/TAN/ILS based on Federated filter are established, and the accurate navigation algorithm of landing is also researched. At the end, the paper gives its simulation results for independent lading approach, which show this algorithm is able to greatly improve the accuracy of speed and location information for aircraft accurate landing.
Long-Term Wind Power Prediction Based on Rough Set
Authors: Gao Shuang , Dong Lei , Liao Xiao Zhong , Gao Yang
Published: June 2013

In long-term wind power prediction, dealing with the relevant factors correctly is the key point to improve the prediction accuracy. This paper presents a prediction method with rough set analysis. The key factors that affect the wind power prediction are identified by rough set theory. The chaotic characteristics of wind speed time series are analyzed. The rough set neural network prediction model is built by adding the key factors as the additional inputs to the chaotic neural network model. Data of Fujin wind farm are used for this paper to verify the new method of long-term wind power prediction. The results show that rough set method is a useful tool in long-term prediction of wind power.
Study on Portable Tracking and Monitoring System
Authors: Liu Yan , Liao Gan Zhou
Published: June 2013

In this study, in combination with mobile communication technology, sensor technology and computer technology, a tracking and monitoring system solution for preventing children and the elderly from getting lost is proposed. With the purpose of realizing monitoring and exerting no effect on the normal activities of the monitored objects, a mobile wireless terminal is applied in this system. Through using embedded microcontroller controller as control core, data acquisition, storage, and distance detection are realized. Through using embedded GPS positioning technology and GSM technology, the instant positions of the monitored children and the elderly are detected. When the monitored objects need to move in a fixed place (kindergarten or nursing home), portable terminals can communicate with computer control terminals and will automatically send a signal for providing warnings and informing computers and guardians when the monitored objects exceed the warning scope, so that it becomes easier for guardians to take corresponding measures in time. Besides, the system can effectively prevent children and the elderly from getting lost, or the emergence of other dangers.
Study of Sequential Minimal Optimization Algorithm Type and Kernel Function Selection for Short-Term Load Forecasting
Authors: Zhao Zhe , Li Xiao Yu
Published: June 2013

Short-term load forecasting is important for power system operation,including preparing plans for generation and supply, arranging the generator to set start or stop, coordinating thermal power units and hydropower units. Support vector machines have advantage in approximating any nonlinear function with arbitrary precision and modeling by studying history data. Based on SVM, this paper selects the sequential minimal optimization (SMO) algorithm to compute load forecasting, because SMO can avoid iterative, so as to short the running time. If we select different kernel functions and the SMO type in the computing process, we will receive different result. Though the analysis of results,the paper obtains the optimal solution in different accuracy or time requirements for short-term load forecasting. By a power plant data, respectively, it discusses from the weekly load forecasts and daily load forecast to play an empirical analysis. It concludes that the selection of ɛ-SVR type and the linear form kernel function is ideal for short-term load forecasting in a not strictly time limits. Otherwise, it will select others in different terms.