bluuebunny/crossref_metadata_2025 huggingface dataset:
Measurement of Service Efficiency in Different Types of Banking Services
Authors: Tinnilä Markku
Published: September 2014

As the share of services in economies grow globally, the efficiency of service production becomes crucial. Despite the many studies on service efficiency, it has proven difficult to find the right measures. The main reason is wide range of services from simple to complex, and from mass to professional services. Consequently, there are no commonly accepted measurement frameworks for comparing the efficiency of different types of services. The Service process matrix developed by Schmenner is one of the most widespread and has been extended and applied by many other researchers. This paper uses the classification of the Service process matrix and its four basic services types recognized in the analysis of service efficiency measurement. The focus of analysis is on banking services, as the industry has services in all of the main services categories. Each category is analysed separately, literature is reviewed for suitable measures and suitable measures of efficiency for all service types are proposed.
Analyzing the Efficiency of European Banks
Authors: Eken Mehmet Hasan , Kale Suleyman , Selimler Huseyin
Published: September 2014

Basic financial and profitability ratios such as net interest margin, return on assets, and return on equity alone do not measure bank performances effectively as they lack the risks associated. Since the success of banks in managing performance is expected to be largely dependent on the correct pricing and management of risks, a proper measurement of efficiency should include the effects of risks. The purpose of this study is to benchmark risk profiles of European commercial banks and performance indicators during the 2006-2009. The research is implemented based on four models by Data Envelopment Analysis with data of 697 banks from 37 countries. The results suggest that there is an extensive inter- and intra-country risk efficiency of banks. Profitability increase is not always directly proportional to risk increase, and the financial crisis substantially decreased the risk efficiency of banks, especially in 2008 in developed economies.
International Portfolio Diversification Benefits among Developed and Emerging Markets within the Context of the Recent Global Financial Crisis
Authors: Vardar Gülin , Aydoğan Berna , Acar Ece Erdener
Published: September 2014

This chapter aims to examine the existence of dynamic linkages among the major emerging stock markets, namely Brazil, Hungary, China, Taiwan, Poland, and Turkey, as well as developed markets, particularly the US, the UK, and Germany during the period 2004-2013. Potential dynamic long-run interdependencies are investigated using Johansen and Juselius (1990) multivariate cointegration test and causal relationship through the Vector Error Correction Model (VECM). Moreover, to capture the impact of the recent global crisis on the cointegrating relationship among the developed and emerging markets, the sample period is divided into pre- and post-crisis sub periods. The empirical findings show that, after the crisis period, the direction of the long-run relationship varies, and furthermore, the stock market interdependence increases, supporting herding behavior of investors during the stock market crash period. Therefore, the increasing dynamic co-movements in the period after the crisis provide direct implications for the international investors due to potential limitation in the international risk diversification and the achievement of greater portfolio returns through global investment.
XBRL
Authors: Liu Chunhui
Published: September 2014

Ranked as one of top ten technologies for accounting and auditing professionals, eXtensible Business Reporting Language (XBRL) is a freely available, open, and global standard language for exchanging business financial information digitally. XBRL holds the greatest promise for building a global standard that is pledged to enhance the accuracy, reliability, efficiency, accessibility and availability of electronic communication of business financial data. This paper sets out to provide a review of literature to lend insights into our understanding of XBRL adoption, implementation, and value realization assessment. A comprehensive review uncovers four sub-themes of research in XBRL adoption: perceived benefits of XBRL adoption; organizational readiness; external pressure; and XBRL adoption. Research challenges for future research are highlighted.
The Role of Social Media Strategies in Competitive Banking Operations Worldwide
Authors: Taskiran Nurdan Oncel , Yilmaz Recep , Bolat Nursel
Published: September 2014

Social media has rapidly taken its place among the important phenomenons of today. It has an important role in institutionalization and companies' financial effectivness in many fields. This chapter discusses concept, development of social media, investigations about social media in different continents, its relation with institutionalization, and its role in the banking sector in the process of globalisation. In this study, social media strategies of a global bank on different continents are empirically analysed. Obtained data sheds light on the relationship between the social and economic capital in today's world in an interdisciplinary platform.
Banking Online
Authors: Cipolla-Ficarra Francisco V. , Alma Jaqueline
Published: September 2014

The authors present the first results of a communicability evaluation of a set of online banking systems aimed at the new credibility of those institutions. They evaluate the strategies of interactive design, focusing on the presentation of the information on the interface. Finally, the first group of human factors is established which has affected negatively the veracity of banking information in Southern Europe in the last five years.
Emerging Technologies for User-Friendly Mobile Payment Applications
Authors: Raina Vibha Kaw
Published: September 2014

The advancement and the evolution of mobile communications and mobile device technology have led to a remarkable growth and tremendous requirement for mobile applications that are carried on mobile phones. These technologies have lead to the deployment of business, communications, and mobile services, and hence, gave rise to mobile payments. The mobile payments are considered as the killer applications and are real-time cashless payments. Mobile payments take place with the help of mobile telephony and communications where maintaining security solutions becomes an important factor. This chapter describes the different emerging technologies carried out between a resource-limited mobile device and a resource-rich computer server over wireless networks.
A New Macroeconomic Architecture for the Stock Market
Authors: Choudhury Masudul Alam
Published: September 2014

The old idea of segmented macroeconomics of the financial sector competing with the real economy is replaced by a new model, which manifests strong interaction, integration and co-evolution by circular causation relations between the monetary sector and the real economy with the bridging function of finance and financial instruments. The Money, Finance, Spending and Real Economy (MFSRE) model emerges. This model formalizes the new architecture for the macroeconomy, and its relationship to the stock market. In this model relating to a reconstructed state of the economy and the emergent structure of the financial architecture, money and spending are treated as complementary elements of growth and development. The overarching structure in the end is the MFSRE with its extensively complementary inter-variables relationship in a general system and cybernetic form of interrelationships. The economic organization of the MFSRE causes price stabilization and economic growth and development. These are signified in the social wellbeing criterion of the good economy. The stock market, exemplified by the empirical case study of Bangladesh's state of the economy and the Dhaka Stock Exchange, bring out the true example of the macroeconomic analysis. The new financial architecture with its stabilization, sustainability and growth and wellbeing as basic-needs regime of development is contrasted with old macroeconomic belief and policies based on outmoded macroeconomic beliefs and futures.
A Particle Swarm Optimizer for Constrained Multiobjective Optimization
Authors: Leong Wen Fung , Wu Yali , Yen Gary G.
Published: September 2014

Generally, constraint-handling techniques are designed for evolutionary algorithms to solve Constrained Multiobjective Optimization Problems (CMOPs). Most Multiojective Particle Swarm Optimization (MOPSO) designs adopt these existing constraint-handling techniques to deal with CMOPs. In this chapter, the authors present a constrained MOPSO in which the information related to particles' infeasibility and feasibility status is utilized effectively to guide the particles to search for feasible solutions and to improve the quality of the optimal solution found. The updating of personal best archive is based on the particles' Pareto ranks and their constraint violations. The infeasible global best archive is adopted to store infeasible nondominated solutions. The acceleration constants are adjusted depending on the personal bests' and selected global bests' infeasibility and feasibility statuses. The personal bests' feasibility statuses are integrated to estimate the mutation rate in the mutation procedure. The simulation results indicate that the proposed constrained MOPSO is highly competitive in solving selected benchmark problems.
Optimization of Drilling Process via Weightless Swarm Algorithm
Authors: Ting T. O.
Published: September 2014

In this chapter, the main objective of maximizing the Material Reduction Rate (MRR) in the drilling process is carried out. The model describing the drilling process is adopted from the authors' previous work. With the model in hand, a novel algorithm known as Weightless Swarm Algorithm is employed to solve the maximization of MRR due to some constraints. Results show that WSA can find solutions effectively. Constraints are handled effectively, and no violations occur; results obtained are feasible and valid. Results are then compared to previous results by Particle Swarm Optimization (PSO) algorithm. From this comparison, it is quite impossible to conclude which algorithm has a better performance. However, in general, WSA is more stable compared to PSO, from lower standard deviations in most of the cases tested. In addition, the simplicity of WSA offers abundant advantages as the presence of a sole parameter enables easy parameter tuning and thereby enables this algorithm to perform to its fullest.
Modeling and Design of Inertial – Filtering Gas Separators-Condensers for Compressor Units of Oil and Gas Industry
Authors: Sklabinskyi V.I. , Liaposhchenko А.A. , Nastenko O.V. , Al Rammahi M.M.
Published: September 2014

This article deals with a new method for natural gas purification from liquid drops - condensation separation method which is an alternative method as to traditionally used methods for this process organization. Authors present results of the research and models of separation process in the inertial-filtering separators-condensers used in the compressor plants of oil and gas industry.
Determination of Static and Dynamic Component of Axial Force in Double Suction Centrifugal Pump
Authors: Lugova Svitlana , Matvieieva Hanna , Rudenko Andrii , Tverdokhleb Igor
Published: September 2014

This article observes the research results of flow behavior in the impeller chamber of the double suction centrifugal pump. On the basis of the research results we have determine the values of static and dynamic component of axial force.
Reliability Improvement of Rotor Supports by Combining Rolling-Element Bearings and Fluid-Film Bearings
Authors: Polyakov Roman , Savin Leonid , Shutin Denis
Published: September 2014

Reliability of rotating machinery is determined to a considerable degree by the bearing units. For several applications the requirements in rotation speed, bearing load and maximal vibration level are so extreme that neither rolling-element bearings nor fluid-film bearings could provide necessary performance characteristics during all regimes of operation. Hybrid bearings, which are a combination of rolling-element and fluid-film bearings, can improve performance characteristics and reliability of the rotor-bearing systems. The aim of this work is to analyze the advantages and disadvantages of the hybrid bearings. Known real applications of hybrid bearings are discussed. Analysis shows that depending on the application different hybrid bearing types could improve dynamic characteristics and life time of the bearing unit, increase load capacity and DN limit of the rolling-element bearing.
Simulation of the Working Fluid Stream in the Pumps and Turbines Flow Path Seals
Authors: Ivanov Andrey , Moskvichev Aleksandr
Published: September 2014

Currently, there are many designs of sealing devices pumps and turbines. However, not all of them have found widespread application. Most commonly used in the industry to non-contact seal minimum positive clearance. These include gap, labyrinth, celled, grooved, screw, etc. The article describes the modeling of the working fluid in sealing gap using Ansys CFX through the gaps, grooved and screw seals, comparison values leaks.)
Flow Simulation in a Labyrinth Seal
Authors: Bondarenko G.A. , Baga V.N. , Bashlak I.A.
Published: September 2014

The paper studies the labyrinth seals of centrifugal compressor profit-proved stages using modern methods of numerical and physical modeling of the centrifugal compressor stages. A series of studies of the effect of operational and geometrical parameters on the maze, namely the quantities of the packed differential pressure, speed, fluid, geometric parameters of the seal, the magnitude of the eccentricity and radial clearance swirl flow at the inlet of a seal, etc. The technique of physical modeling seal has been specified. Research was conducted in two phases: numerical simulation using complex software Flow Vision and receiving data on a universal test bench to study the labyrinth seals.. A three-dimensional model of the labyrinth seal has been created, its verification by "known data has been held.. Integral characteristics in the form of distribution of flow velocities and pressures, flow visualization were obtained. Results of studies made ​​it possible to refine the workflow and introduce amendments to the known calculation formula for a more accurate calculation of leakage through the seal, subject to a number of additional factors that were not previously taken into account
Proposal to Improve the Design of the Impulse Face Seal
Authors: Kundera Czeslaw , Martsynkovskyy Volodymyr
Published: September 2014

The paper describes the construction and operating principle of the non-contacting impulse face seal. A mathematical model of the impulse seal was formulated. The method of control of the opening force by change of the cavity volume within sealing gap was described. The results obtained from the numerical calculations prove that the effect of the cavity volume on the axial vibrations of the flexibly mounted ring.
Investigation of Energy Losses in the Flow Section of the Small-Sized Axial-Flow Pump
Authors: Gusak Alexander , Matvienko Olga , Nenja Victor
Published: September 2014

The theses present results of a study of a small-sized axial-flow stage with blades of small aspect ratio, which is designed for submersible borehole pumps. The energy losses in the flow section of stage are analyzed in research. Refined equations of total hydraulic losses for these flow parts were received by numerical simulation. The results of numerical simulation are compared with experimental data.
Computer Design of Compressor Impellers of Increased Fatigue Strength
Authors: Lvov Gennadiy , Levashov Victor , Kostromitskaya Olga
Published: September 2014

High cycle fatigue behavior of the compressor impeller is investigated. On the basis of numerical calculations of the stress-strain state of wheel the prognosis of life time is done. The results show relations between the number of cycles to failure and maximally possible stresses and displacements. Relation of cumulative fatigue damage is researched depending on the number of cycles for the different modes of vibration on resonant frequencies.
Damping of Self-Excited Pressure Pulsations in Petrodiesel Pipeline
Authors: Himr Daniel , Haban Vladimir
Published: September 2014

A pumping station in a fuel storage suffered from pressure pulsations in a petrodiesel pipeline. Check valves protecting the station against back flow made a big noise when disc hit a seat. Due to employees complaints we were asked to solve the problem, which could lead to serious mechanical problems.
Pressure measurement in the pipeline showed great pulsations, which were caused by self-excited oscillation of control valves at the downstream end of pipeline. The operating measurement did not catch it because of too low sampling frequency.
One dimensional numerical model of the whole hydraulic system was carried out. The model consisted of check valve, pipeline and control valve, which could oscillate, so it was possible to simulate the unsteady flow. When the model was validated, a vessel with nitrogen was added to attenuate pressure pulsations.
According to the results of numerical simulation, the vessel was installed on the location. Subsequent measurement proved noticeably lower pulsations and almost no noise.
Cavitation its Use and Mathematical Modelling
Authors: Jablonská Jana , Kozubková Milada
Published: September 2014

The problem of cavitation is highly discussed and published phenomenon not only in a negative sense, but in the positive use also. In hydraulic systems the cavitation is undesirable phenomena specific by cavitation wear and noise. These systems operate at ever-increasing operating conditions (pressure and flow). For this reason, this phenomenon occurs in many technical applications. The problem cavitation is very large, so it is necessary to define the area of scientific interest. Currently, there is an increasing interest in the fields of mathematical and experimental research in hydraulic elements and systems engineering practice. The paper is focused on modelling of shape of cavitation area and influence of air content primarily on the simple geometry of plane nozzle, where the water is flowing.
Existing Perspectives of Rotodynamic Pumps Rotation Speed Increase
Authors: Gulyi Alexander , Kobyzska Anastasia
Published: September 2014

Perspectives of high-speed centrifugal pump units are regarded, besides the main problems of rotation speed increase and their solution methods are studied in this paper.
Physical-Mechanical Properties of the Modified Fine-Grained Concrete Subjected to Thermal Effects up to 200°С
Authors: Korsun Volodymyr I. , Vatin Nikolai , Korsun Artem , Nemova Darya
Published: September 2014

The article introduces the results of the experimental research of the influence of elevated temperatures on the modified fine-grained concrete strength and strain under axial compression.
The Loss of Local Stability of Thin-Walled Steel Profiles
Authors: Trubina Darya , Abdulaev Dzhamal , Pichugin Egor , Garifullin Marsel
Published: September 2014

Most methods for calculating bearing capacity profiles section of complex shape local buckling (LPA) are ignored. The problem of LPA rod is reduced to the problem of overall sustainability. At the design stage constructions of thin-walled beams, it is important to have a simple method for estimating the bearing capacity and the potential loss of local and general stability of the structure.
Analysis of the Influence of Dynamic Properties of Structures on Seismic Response According to Montenegrin and European Regulations
Authors: Mrdak Ivan , Rakočević Marina , Žugić Ljiljana , Usmanov Rustam , Murgul Vera , Vatin Nikolay
Published: September 2014

The motion of strong earthquakes causes nonlinear deformation and damages to the structure. For structural systems of buildings, domestic and European (EC8) regulation apply algorithm of seismic design based on reference linear-elastic methods that are carried out in two phases. Phase I includes determination of dynamic characteristics of structure, which are then used in phase II for calculation of seismic effects. In this study, parametric analysis of influence of dynamic characteristics of structure was done on multiple numerical examples, according to domestic and EC8 regulations and comparison of results.
Central Ventilation System with Heat Recovery as One of the Measures to Upgrade Energy Efficiency of Historic Buildings
Authors: Pukhkal Viktor , Vatin Nikolay , Murgul Vera
Published: September 2014

Improving thermal shield in buildings and reducing energy consumption have become major problems to be solved for the recent decades. Natural ventilation accounts for nearly half of heat losses in existing buildings. A controlled heat recovery ventilation system makes it possible to reduce irrational heat losses and improve microclimatic comfort. A typical historic residential apartment building constructed before industrial times in Saint-Petersburg is subject of this article. Options of centralized controlled heat recovery ventilation systems for old historic apartment buildings in Saint-Petersburg are suggested in this article.
Experimental Research on Compatibility between SBS Modifier and Base Asphalt
Authors: He Rui , Dou Huai Bing , Li Dan
Published: September 2014

Firstly we analyzed the effect of the type of matrix asphalt, the dosage of SBS modifier and shear time on the properties of SBS modified asphalt with the analysis method of Multi-factor, then we analyzed the mechanism of interaction between SBS modifier and matrix asphalt based on the four-component test analysis. The results showed that different types of matrix asphalt had different modification effect. Among them, the matrix asphalt A and SBS modifier had the best compatibility. The high content of asphaltene helped to improve the temperature properties of asphalt, the asphalt with high content of aromatic was much easier to be modified. As the dosage of SBS modifier reached 4.2%, the interconnected network had been formed, the modification effect achieved the optimal result, but the modification effect would be reduced with an additional contribution of SBS modifier. With the prolonged shear time, SBS modifier could be dispersed in the matrix asphalt more uniformly, however, the shear time should not be too long, the optimum shear time is 40min.
Effect of Electrospinning Process on Electrospun Chlorinated Polyvinyl Chloride (CPVC) Nanofibers
Authors: Cai Xiu Li , Jiang Ting Ting , Qiao Chun Mei , Cheng Bo Wen , Kang Wei Min
Published: September 2014

This work focuses on preparations of CPVC nanofibers by the electrospinning. The effects of the applied voltage, the capillary and collector distance and the extrusion rate on the fiber morphology were analyzed. The morphology of the fiber was examined by scanning electron microscopy. The results indicates that when the applied voltage is 26 KV, the extrusion rate of CPVC is 0.2 ml/h and the the Capillary and Collector Distance is 15 cm, the CPVC nanofiber membrane is optimal.
Research on Fatigue Damage of Sucker Rod Based on Damage Mechanics
Authors: Zhou Rui Fen , Feng Ming Xi , Jiang Min Zheng , Dong Kang Xing
Published: September 2014

Fatigue failure of sucker rod can occur under the effect of alternating load, and results in failure of sucker rod. In this paper, the damage mechanics theory is applied to the fatigue damage of sucker rod on the study, establish the fatigue damage evolution equation of sucker rod, and the damage mechanics-finite element method is adopted to solve fatigue damage of sucker rod, obtain change law of stress field, strain field and fatigue damage field of sucker rod, and carry out fatigue damage cycles of sucker rod. The study has a certain theoretical significance and practical significance on the rational use of sucker rod, the decrease of sucker rod fracture accident and the improvement of overall economic benefits in oilfield development.
Mechanics Property Analysis and Optimizing Design on a New Type Square Cabin Based on Finite Element Method
Authors: Wang Peng , Cheng He Zhang , Zou Guang Ping
Published: September 2014

Compared with the traditional metal square cabin, the new type square cabin makes a good performance on lightweight and can also improve the stiffness of the structure. Both the static and dynamic analysis results which tested under the condition of general standard show that: the new type cabin which made by aluminum foam sandwich composite panels can reach the purpose of light weight design and also can improve the stiffness of the structure. What is more, optimum design is used on the dimension parameter to enhance the property of the square cabin.
Numerical Analysis on Effects of Inlet Bent Pipe’s Position on a Centrifugal Compressor’s Aerodynamic Noise
Authors: Zuo Shu Guang , He Hui Juan , Wu Xu Dong , Wei Kai Jun
Published: September 2014

The inlet connection of a centrifugal compressor is a bent pipe, and a straight pipe is installed between the bent pipe outlet and impeller inlet. The effect of different lengths of the straight pipe on the aerodynamic noise of a centrifugal compressor is numerically simulated. Theresult show that it’s essential to value the inlet bent pipe’s position in the inlet and outlet aerodynamic design. With the increase of straight pipe’s length, the noise radiated from the inlet decreases. When the length is over the pipe diameter, it has little effect on the outlet noise. The increase of straight pipe’s length also makes the circumferential noise decrease. The noise is distorted at approximately 90 ° in the rotational direction of the volute tongue. The sound power level of the compressor decreases to a constant value with the length over the pipe diameter. In the engineering application on aerodynamic noise, the straight pipe’s length before impeller inlet should be longer than the pipe diameter.
Simulation Analysis on Dynamic Characteristics of a Quad Intergrated Mirror Frame
Authors: Zhao Guang , Pan Chun Xiang , Wang Yan
Published: September 2014

The “SG” is a large inertial confinement fusion (ICF) project that is building in china. Its essential working principium is stimulating the nuclear material in the target ball by shooting with laser, then the ICF will produce large numbers of fusion energy which is controllable. The laser is lead and transmited primary by mirror which is clamped by mirror frame in the shooting range system.For the needs of precision when shooting, there are some strict demands to the dynamic characteristics of the mirror frame. This paper designed a machine model of a array mirror frame which is quad intergrated, and simulation analysis on dynamic characteristics of the mirror frame .
Research on Crack Region’s Electrochemical Corrosion Performance in Hot-Dipping Galvanizing
Authors: Luo Gong , Yuan Yuan , Liu Yong Zhen , Huang Bei , Zhang Rui , Li Shi Ning , Zhou Zong Min , Zeng Jian Min
Published: September 2014

The composition, microstructure and Tafel polarization curve of the coating layer in hot-dipping Zn-0.2%Mn alloy bath have been investigated through XRF, SEM and electrochemical workstation. It is found that Mn is unevenly distributed in the coating layer. It shows that Mn is mainly distributed in coating outside surface. It is also means that Mn is tend to combine with Fe, O other than with Zn. Tafel polarization curve were collected by using three electrode system, Tafel polarization curve shows the electrochemical corrosion performance on internal surface is worse than the outside surface of coating layer, in 3.5% NaCl solution. It also means Mn enrichment and oxidation on the outside surface of the coating layer have an obvious influence to its corrosion performance.
The Local Buckling Analysis of Houdingxiang Bridge in the Process of Pushing
Authors: Wu Hong Sheng , Wei Hua , Zou Yu , Li Yan Ming , Wang Hai Jun
Published: September 2014

According to the original design, the strength of the web should be able to withstand the support reaction force during launching. While in the process of pushing construction, local buckling of the web on the support occurred. In view of the above situation, in this paper, establishing solid models for finite element analysis based on the ABAQUS software, comparing with the result of original design, and it was found that there existed some differences between simplified model and constraint condition of the design and construction. That is, the original design did not consider the deformation cased by beam segments arching, which caused the bearing area reducing and stress concentration, this was unable for the design software based on beam elements method to analyze. This problem could be solved by elevating the arching supporting. The analysis showed that elevating the adjacent supporting could reduce the maximum stress in the structure effectively by sharing the loads.
Positioning Error Analysis Modeling of the Aircraft Skin
Authors: Wang Yang , Lu Cong
Published: September 2014

The low-stiffness aircraft skin is easy to deform during the positioning process. This paper presents a method of positioning error analysis for the aircraft skin. The positioning error analysis model is divided into two parts: rigid error analysis and flexible error analysis. For the rigid part, the deterministic locating method is applied to analysis the position error of the key characteristic point according to the production errors. For the flexible part, a static equilibrium equation of the skin is used to describe the relationship of the contact forces. And based on the principle of minimum complementary energy and Coulomb friction law, a nonlinear programming function is built to solve the passive contact forces and the skin deformation in each step. This method is more effective to describe the positioning process and obtain the positioning error.
Stress Distribution of Wellbore under Non-Uniform In Situ Stress
Authors: Wang Xiao Zeng , Qu Zhan , Dou Yi Hua
Published: September 2014

The distribution of the non-uniform in situ stress around wellbore will impair the stability of the rock of wellbore wall. Drilling the underbalanced wells and depleted formations, the instability of the wellbore can result in the drilling failure. Mechanics model of the wellbore wall rock is developed. According to the relationship between the stress function and components of stresses, the superposition principle is adopted to develop the formulas of the radial, hoop, and shear stresses of the wellbore wall under the non-uniform in situ stress. The formula of the mud density which do not crash the rock of wellbore wall is derived. The error of the mud density between fitting formula developed in the paper and theoretical method is less than 2.5%. The mud density that ensure the stability of wellbore is determined.
The Investigation of Dynamic Stress Equilibrium of Compact Tension Specimen Based on Hopkinson Tension Bar Device
Authors: Wang Peng , Wang Yan Wei , Zou Guang Ping
Published: September 2014

This article study the dynamic fracture behavior of compact tension specimens under tensile wave loading[1-3]. And the test - numerical hybrid method is used to satisfy the condition of dynamic stress equilibrium. The initial load for numerical simulation is based on the experimental data. In that case, the numerical simulation results can be used to analysis the dynamic stress equilibrium.
The Effect of Air Knife Flow Rate on Coating Weight and Thickness for a Hot Dipping Process Simulator
Authors: Fang Fang , Wang Li Xin , Zhou Shao Yun , Li Jiang Wen
Published: September 2014

A series of air knife flow rate were conducted by a hot dipping process simulator in laboratory to study its effect on coating weight and thickness. The research results show that, when the experimental steel were immersed for 3.5s in a Zn-0.24%Al zinc bath, with atmosphere of N2-10%H2 and dew point-60°C in the whole simulation, air knife flow rate (FR) was a key factor for coating surface quality. When FR was precisely controlled by the simulator from 200~500 l/min, the coating weight and thickness decreased significantly from 159.68 to 56.19 g/m2 and 17.45 to 7.84 μm. In which the decreasing line was more obvious when FR increased from 300 to 400 l/min, that the coating thickness had a dramatic decreasing from 18.08 to 11.07μm.
Piezoelectric Effect of Quaic-Nanotetrapods ZnO Nanostructure
Authors: Yin Bing , Chang Yue , Ji Jiu Yu , Hu Li Zhong
Published: September 2014

Quaic-nanotetrapods ZnO nanostructure were fabricated by a simple chemical vapour deposition method. The morphologies, crystalline qualities and optical characteristics of the quaic-nanotetrapods ZnO nanotetrapods were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL) analytic technology, respectively. A piezoelectric nanogenerator based on the ZnO nanotetrapods was fabricated by a simple technique. And the energy harvesting ability is studied by experimental characterization methods and theoretical calculations.
Preparation and Characterization of the Amidoxime-Modified Polyacrylonitrile (PAN-Amidoxime) Nanofibre Composite
Authors: Hu Min , Ma Yu Hao , Li Zong Jie , Kang Wei Min , Cheng Bo Wen
Published: September 2014

In this research, a kind of nonwoven composite used for the absorption of heavy mental ions has been made. The composite was made of two layers of ES thermal bonded nonwovens as the protective layers and the PAN-amidoxime nanofibers which are prepared through the modification of electrospun PAN nanofibers as the interlayer. The composition was achieved by the ultrasonic bonding method. After the composition the PAN nanofibers were modified by grafting the amidoxime group to PAN. The results of FT-IR spectra and FE-SEM indicated that nitrile groups in PAN were partly converted into amidoxime groups and there were no serious cracks on the surface of PAN-amidoxime nanofibers. The results show that the amidoxime groups have been proved to be grafted to the PAN nanofibers with the percent grafting of 81.6%.
Preparation and Electromagnetic Properties of Ferriferrous Oxide/Polyaniline Composites
Authors: Wang Li , Geng Bo
Published: September 2014

By using chemical oxidative polymerization method, ferriferrous oxide/polyaniline (Fe3O4/PANI) composites are successfully synthesized. The composites are characterized by Fourier transform infrared spectra (FTIR), vibrating sample magnetometer (VSM), and vector network analyzer (VNA). With the amount of Fe3O4 increase, the saturation magnetization and remnant magnetization of Fe3O4/PANI composites decrease, while the coercivity remains unchanged. The addition of Fe3O4 makes the reflection loss (RL) of Fe3O4/PANI composites decreases and the microwave absorption increases.
Synthesis and Photophysical Properties of Charged Iridium(III) Cyclometallates Based on Hole-Transporting Carbazole Unit
Authors: Tan Gui Ping , Fan Hong Bo , Wong Wai Yeung
Published: September 2014

Four novel charged Ir (III) cyclometallates based on 9-phenylcarbazole unit have been developed. By attaching isoquinoline or 5-trifluoromethylpyridine group, the light-emitting properties of the resulting Ir (III) cyclometallates have been improved. Meanwhile, 1,10-phenanthroline or 4,4′-dimethyl-2,2′-bipyridine has been utilized to modify the thermal stability. The four Ir (III) cyclometallates emit yellow light with the highest photoluminescence quantum yields (ΦP) of 0.32 (C4), which is only less than that of the state-of-art complexfac-tris (2-phenylpyridine) iridium (III) [fac-Ir (ppy)3], which showsΦPof 0.40 under the same condition. This inspiring result reveals that the bulky character of CF3group enhances the performance of reported charged Ir (III) cyclometallates and makes them to be potential phosphors in OLED applications.
First-Principles Calculations of Energy Band for Wurtzite ZnO under Uniaxial Loading along [0001] Direction
Authors: Li Li Xin , Zhao Jun Liang , Guan Xue Mao
Published: September 2014

First-principles calculations are carried out to analyze the variation of the energy gap and the absolute value of the crystal-field splitting energy of wurtzite zinc oxide under uniaxial loading along [0001] direction. The uniaxial loading in [0001] direction is predicted to be more effective to adjust the energy gap than applying the hydrostatic pressure, without changing the direct energy-gap nature. The top of the valence band is sensitive to the uniaxial stress, and the absolute value of the crystal-field splitting energy reaches the minimum when the uniaxial stress is about 2 GPa. The variation in electronic properties originates mainly from the relatively lower density of the valence electrons inc-axis direction.
Determination of 1,2-Benzisothiazolin-3-One in Paper for Food Packaging by Fluorescence Spectroscopy
Authors: Sun Jia Yue , Di Qiu Mei , Xu Qi Guang , Han Liu
Published: September 2014

A novel method has been developed to detect 1,2-benzisothiazolin-3-one (BIT) in paper for food packaging by hydrothermal extraction coupled with fluorescence spectroscopy in paper for food package. Parameters affecting fluorescence intensity have been evaluated, including the pH of solvents and the effect of surfactants. It turned out to be that fluorescent spectroscopy was a sensitive and easy method to determine BIT in paper package. The regression equation obtained was liner, and the correction coefficient was 99.9%, the limit detection (LOD) was 25.3μg/L, method detection limit (MDL) was 0.25mg/kg, which turned out that this method was sensitive and precise to determine BIT in food package.
Fluorescence Study on the Direct Detection of Octylphenolin Plastic Food Packaging Materials
Authors: Sun Jia Yue , Xu Qi Guang , Di Qiu Mei , Han Liu , Zhang Yu Xia
Published: September 2014

A rapid and sensitive method based on the application of fluorescence spectrophotometry is developed for the determination of Octylphenol (OP) in food packaging materials. The extraction of OP from plastic food packaging materials was carried out using microwave-assisted solvent extraction. Laboratory experiments have shown that when the concentrations of OP are from0.1 to 0.6mg.L-1, they have a linear relationship with the emitted fluorescence intensity. In this interval, the calibration curve is y=10+212x, showing strong correlation (correlation coefficientR2is 0.9983).
A Study on the Green Design of Ceramic Products in the Era of Information
Authors: Huang Hui , Liu Jun Jian
Published: September 2014

The green design of ceramic products in the era of information should pay attention to quality, lifetime and function of products, and should consider green design of product function, structure and material, component design as well as life cycle. This paper studied the green manufacturing during molding and firing, the green decorative and package design of ceramic products to improve the reclamation rate of production, disassembly and recycle in the life cycle for the decrease of environmental pollution due to wastes.
A Ceramic Crack Test Method Based on the Maximum Variance Ratio of Inter-Class and Intra-Class
Authors: Liu Bing Xiang , Wang Feng Qin , Yu Cheng Le
Published: September 2014

This paper presents a method for inter-class ceramic crack detection threshold than the maximum variance within the class-based segmentation. Ceramics crack detection methods are mainly obtained by ceramic image data, image pre-processing, image segmentation, feature extraction and object recognition constitutes five links. Experimental results show that the method can be detected quickly and accurately detect whether the standard ceramic.
Impacts of Temperature on Mechanical Properties of FGMs
Authors: Liu Wen Guang , Yan Cheng
Published: September 2014

According to the Hypersonic Vehicle harsh environment, impacts of temperature on the mechanical properties for functionally gradient materials are studied. A power-law distribution of material is applied between the two pure materials; a material property model of FGMs is built. Several temperature conditions are set up and the results are obtained in the end through numerical analysis. It can be shown that the material properties of FGMs plate are temperature-dependent and vary along the thickness in terms of volume fractions of constituents.
Mechanical Properties of Fumed Silica / HDPE Composites
Authors: Zhao Jing , Wu Di , Han Jin Yu , Jin Zheng
Published: September 2014

Fumed silica /High density Polyethylene (HDPE) composites were prepared via melt mixing using a two –screw co-rotating extruder. To improve the dispersion degree of the fumed silica, the γ-aminopropyl triethoxy silane (KH-550) was used as silane coupling agent. The composites which obstained different fumed silica content were prepared by melt-mixing process. Next composites mechanical properties were measured by the crystal polarized light microscopy (PLM), Shore hardness, the tensile testing. The results indicate that fumed silica can enhance HDPE resin and the mechanical properties of composites are optimum when fumed silica content is 3.0 wt%.
Design and Development of Cool Multifunctional Composite High-Grade Fabrics
Authors: Guo Shu Min , Yu Di Mei , Liu Yun Ting , Wang Zhe Feng , Zhu Cheng Yan , Zhang Hong Xia
Published: September 2014

In order to develop the multi-functional high-end apparel fabrics, the paper used materials, organization, patterns and colors to achieve a reasonable design to make cool fabrics, and when using Honeycomb UV fiber/ Tencel/ honeycomb jade fiber (50/30/20) blended yarn and machine warp density is 40 root/cm, weft density is 33 root/cm, fabrics havemost cool nature. This project combined with today's Fabric trends and used a sense of cool colors such as green and blue, has designed cool multifunctional composite high-end fabrics and showed the appearance of cool fabrics more comprehensively in the form of clothing simulation results.
Catalytic and Regenerative Properties of Nickel-Based Zeolite Catalysts
Authors: Qin Li Yuan , Jiang En Chen , Sun Yan , Li Shuang
Published: September 2014

Nickel-based catalysts were prepared by impregnating at different calcination temperatures to solve the problems of short lifetime, coking and hard to regenerate of HZSM-5 catalyst which was widely used as bio-oil upgrading catalyst. The NiO loading was 8wt. %, and the calcination temperature was 350~650°C. The surface characteristics, catalytic and regenerative properties of the catalysts were also analyzed and compared. When the calcination temperature is 550 °C, the catalyst shows good properties and the conversion of toluene and guaiacol is 83% and 80% respectively. The results of life-tests show that the adding of active material can help extend the life and improve the anti-coking ability of the catalyst. The conversion of toluene and guaiacol keeps at 40% and 50% respectively after 6h continuously catalytic reaction. The macromolecule aromatics in the catalyst channel can be converted into micromolecule aromatics by the adding of NiO.
Preparation of a New Biomass-CWS with Soluble Sylvite
Authors: Guo Yu , Chen Qian Lin , Wei Da Peng
Published: September 2014

According to the preparation method of coal-water slurry, the paper tries to use the cattle dung and livestock wastewater as biomass and coal to prepare a new composite CWS. This new CWS utilizes biomass waste instead of some content coal and fresh water, and it shows similar property with CWS by pure coal. The co-slurrying properties and the influences of different types of coal of cattle dung and coal were studied. Experiments show that: the adding cattle dung and livestock wastewater could prepare slurry fuel better than not, the dry biomass dosage can reach 7%. Through the experiment detection biomass-CWS properties (such as heat, concentration, viscosity, granularity, sulfur and ash, stability, volatile, ash melting point, etc), we found the best ratio of cattle dung, coal, water and additives for co-slurrying, the best preparation conditions and the best kind of coal. As the result shown, the biomass-CWS is prepared by anthracite, cattle dung (dry) and additives, this respective content are 53%, 7% and 0.6%. Consider fresh cattle dung having 70% water, this CWS should be prepared by wet pulping and ball milling 15mins. Because of adding biomass and waste water, 7% soluble sylvite has been detected in the coal ash.
Bandgap Determination of Cubic Rocksalt AlN Film from Experimental and Theoretical Investigations
Authors: Zhong Qing , Huang Shang Li , Fu Yue Chun , Shen Xiao Ming , Zeng Jian Min , He Huan
Published: September 2014

Cubic rocksalt (RS) AlN film was grown on MgO (100) substrate by laser molecular beam epitaxy (LMBE) technique, and its bandgap was determined experimentally and theoretically. Based on the analysis of optical transmittance spectrum, the RS AlN film shows an indirect bandgap of 4.807 eV. Using the Cambridge sequential total energy package (CASTEP) module of materials studio (MS) software, an indirect bandgap of RS AlN is predicted as observed experimentally. While the calculated bandgap is smaller than the experimental value, which can be ascribed to the inaccurately handled exchange-correlation energy in the calculations.
Improved Dynamic System of Microbial Continuous Fermentation and its Parameter Identification
Authors: Xiao Hong Li , Chong Lan Zhang , Hang Fei Li , Yong Wang
Published: September 2014

In this paper, the nonlinear dynamic system of microbe continuous fermentation products 1,3-propanediol (1,3-PD) is rewritten by improving the specific cellular growth rate, specific substrate consumption rate and specific product formation rate. Firstly, under the condition of substrate glycol excess and active trans-membrane transport, according to the dynamic behavior the fermentation process, we consider the glycerol and 1,3–PD concentration within the cell, and improve the specific cellular growth rate, specific substrate consumption rate and specific product formation rate, then rewrite the dynamic system of microbial continuous fermentation process. Secondly, taking the dynamic system as main constraint condition, we establish the parameter identification model and prove the existence of the optimal solution. Lastly, the numerical results calculated by particle swarm algorithm show that the improved model is suitable for describe the dynamic behavior of 1,3-PD, but is not accurate enough for by-products.
Extraction of Nanocellulose from Sugarcane Bagasse
Authors: Wang Qing , Zhang Ya Hui
Published: September 2014

Sugarcane bagasse was used as start materials to extract nanocellulose fibers. The morphology was investigated by scanning electron microscopy. The result indicated that the nanocellulose is successfully extracted by a series of alkali and acid treatment. The nancellulose is characterized by nanowire structure, and possesses high aspect ratio.
A Hybrid Neural Network for Prediction of Surface Roughness in Machining
Authors: Rajora Manik , Shih Alexander H. , Zou Pan , Li Bei Zhi , Liang Steven Y.
Published: September 2014

Surface roughness is an important outcome in the machining process and it plays a major role in the manufacturing system. Prediction of surface roughness has been a challenge to researchers because it is impacted by different machining parameters and the inherent uncertainties in the machining process. Prediction of surface roughness will benefit the manufacturing process to be more productive and competitive at the same time to reduce any pre-processing of the machined workpiece in order to meet the technical specifications. In this study, a hybrid GA-LM ANN is proposed for the prediction of surface roughness during roughing process in turning operation. To verify the performance of the proposed approach, the results are compared with the results obtained by training an ANN using GA or LM. The results have shown that the hybrid ANN outperformed the other two algorithms.