bluuebunny/crossref_metadata_2025 huggingface dataset:
Violence and Sexual Offending Behavior in People with Autism Spectrum Disorder who have Undergone a Psychiatric Forensic Examination
Authors: Søndenaa Erik , Helverschou Sissel Berge , Steindal Kari , Rasmussen Kirsten , Nilson Britta , Nøttestad Jim Aage
Published: July 2014

The increased awareness of Autism Spectrum Disorders (ASD) over the last few decades as well as the potential association between ASD and offending behaviors has spurred a need for increased research in this area. In order to explore any possible relationship between ASD and violent or sexual crime the present study examines all forensic examination reports over a 10-yr. period in Norway where the charged persons were diagnosed with ASD and charged with either a violent ( N = 21) or a sexual ( N = 12) offense. Differences between these two groups regarding previous contact with child welfare and confessions to the offense were found. There was also a tendency toward more severe mental health problems and less intellectual problems among the violent offenders than the sexual offenders.
Son of God, Brother of Jesus: Interpreting the Theological Claims of the Chinese Revolutionary Hong Xiuquan
Authors: Kilcourse Carl S.
Published: July 2014

This paper examines the theological claims of Hong Xiuquan (1814–64), the leader of the Taiping Rebellion (1850–64). Whilst various aspects of the Taipings' theology and religious culture were characterised by originality, the most unique – and, for many, shocking – feature of their new theological world-view was the belief that Hong was the second son of God and younger brother of Jesus. This belief, which was based on visions that Hong had experienced in 1837, provoked criticism and condemnation from Protestant missionaries who were in China at the time of the Taiping Rebellion. The first part of this paper discusses two particular interpretations of Hong's claims in the reports of those missionaries. The analysis reveals that the missionaries' orthodox lens caused them to misunderstand and misrepresent Hong's claim to be the second son of God. Moving beyond the critical interpretations of the missionaries, the second part of this paper examines the Taipings' specific discourses on the nature of the Heavenly Father and his relation to Jesus and Hong. By analysing Hong's claims within this wider (and previously ignored) theological framework, the paper supports a new interpretation that views the title second son of God not as evidence of the Taipings' heterodox character, but as an access point for understanding their localised doctrine of God.
Computer Simulations of Soft Matter: Linking the Scales
Authors: Potestio Raffaello , Peter Christine , Kremer Kurt
Published: July 2014

In the last few decades, computer simulations have become a fundamental tool in the field of soft matter science, allowing researchers to investigate the properties of a large variety of systems. Nonetheless, even the most powerful computational resources presently available are, in general, sufficient to simulate complex biomolecules only for a few nanoseconds. This limitation is often circumvented by using coarse-grained models, in which only a subset of the system’s degrees of freedom is retained; for an effective and insightful use of these simplified models; however, an appropriate parametrization of the interactions is of fundamental importance. Additionally, in many cases the removal of fine-grained details in a specific, small region of the system would destroy relevant features; such cases can be treated using dual-resolution simulation methods, where a subregion of the system is described with high resolution, and a coarse-grained representation is employed in the rest of the simulation domain. In this review we discuss the basic notions of coarse-graining theory, presenting the most common methodologies employed to build low-resolution descriptions of a system and putting particular emphasis on their similarities and differences. The AdResS and H-AdResS adaptive resolution simulation schemes are reported as examples of dual-resolution approaches, especially focusing in particular on their theoretical background.
Marinopyrrole Derivatives with Sulfide Spacers as Selective Disruptors of Mcl-1 Binding to Pro-Apoptotic Protein Bim
Authors: Cheng Chunwei , Liu Yan , Balasis Maria , Garner Thomas , Li Jerry , Simmons Nicholas , Berndt Norbert , Song Hao , Pan Lili , Qin Yong , Nicolaou K. , Gavathiotis Evripidis , Sebti Said , Li Rongshi
Published: July 2014

A series of novel marinopyrroles with sulfide and sulphone spacers were designed and synthesized. Their activity to disrupt the binding of the pro-apoptotic protein, Bim, to the pro-survival proteins, Mcl-1 and Bcl-xL, was evaluated using ELISA assays. Fluorescence-quenching (FQ) assays confirmed the direct binding of marinopyrroles to Mcl-1. Benzyl- and benzyl methoxy-containing sulfide derivatives 4 and 5 were highly potent dual Mcl-1/Bim and Bcl-xL/Bim disruptors (IC50 values of 600 and 700 nM), whereas carboxylate-containing sulfide derivative 9 exhibited 16.4-fold more selectivity for disrupting Mcl-1/Bim over Bcl-xL/Bim binding. In addition, a nonsymmetrical marinopyrrole 12 is as equally potent as the parent marinopyrrole A (1) for disrupting both Mcl-1/Bim and Bcl-xL/Bim binding. Some of the derivatives were also active in intact human breast cancer cells where they reduced the levels of Mcl-1, induced programd cell death (apoptosis) and inhibited cell proliferation.
Calibration of an Outdoor Distributed Camera Network with a 3D Point Cloud
Authors: Ortega Agustín , Silva Manuel , Teniente Ernesto , Ferreira Ricardo , Bernardino Alexandre , Gaspar José , Andrade-Cetto Juan
Published: July 2014

Outdoor camera networks are becoming ubiquitous in critical urban areas of the largest cities around the world. Although current applications of camera networks are mostly tailored to video surveillance, recent research projects are exploiting their use to aid robotic systems in people-assisting tasks. Such systems require precise calibration of the internal and external parameters of the distributed camera network. Despite the fact that camera calibration has been an extensively studied topic, the development of practical methods for user-assisted calibration that minimize user intervention time and maximize precision still pose significant challenges. These camera systems have non-overlapping fields of view, are subject to environmental stress, and are likely to suffer frequent recalibration. In this paper, we propose the use of a 3D map covering the area to support the calibration process and develop an automated method that allows quick and precise calibration of a large camera network. We present two cases of study of the proposed calibration method: one is the calibration of the Barcelona Robot Lab camera network, which also includes direct mappings (homographies) between image coordinates and world points in the ground plane (walking areas) to support person and robot detection and localization algorithms. The second case consist of improving the GPS positioning of geo-tagged images taken with a mobile device in the Facultat de Matemàtiques i Estadística (FME) patio at the Universitat Politècnica de Catalunya (UPC).
Enhanced photocatalytic hydrogen evolution by combining water soluble graphene with cobalt salts
Authors: Wang Jing , Feng Ke , Zhang Hui-Hui , Chen Bin , Li Zhi-Jun , Meng Qing-Yuan , Zhang Li-Ping , Tung Chen-Ho , Wu Li-Zhu
Published: July 2014

There is tremendous effort put in the pursuit for cheap and efficient catalysts for photocatalytic hydrogen evolution systems. Herein, we report an active catalyst that uses the earth-abundant element cobalt and water-dispersible sulfonated graphene. The photocatalytic hydrogen evolution activity of the catalyst was tested by using triethanolamine (TEOA) as electron donor and eosin Y (EY) as the photosensitizer under LED irradiation at 525 nm. Hydrogen was produced constantly even after 20 h, and the turnover number (TON) reached 148 (H2/Co) in 4 h with respect to the initial concentration of the added cobalt salts was shown to be 5.6 times larger than that without graphene.
Multicomponent reactions in nucleoside chemistry
Authors: Koszytkowska-Stawińska Mariola , Buchowicz Włodzimierz
Published: July 2014

This review covers sixty original publications dealing with the application of multicomponent reactions (MCRs) in the synthesis of novel nucleoside analogs. The reported approaches were employed for modifications of the parent nucleoside core or for de novo construction of a nucleoside scaffold from non-nucleoside substrates. The cited references are grouped according to the usually recognized types of the MCRs. Biochemical properties of the novel nucleoside analogs are also presented (if provided by the authors).
An application of multiscale early arrival waveform inversion to shallow seismic data
Authors: Yu Han , Hanafy Sherif M.
Published: July 2014

We estimate the near surface velocity distribution by applying multiscale early arrival waveform inversion (MEWI) to shallow seismic land data. This data set is collected at Wadi Qudaid in western Saudi Arabia with the purpose of characterizing the shallow subsurface for its water storage and reuse potential. To enhance the accuracy of MEWI, we correct for the attenuation effects with an estimated factor Q, and also extract a natural source wavelet from the data. We then applied MEWI to invert the processed data for tomograms on different scales starting from a traveltime tomogram as our initial velocity model. Results suggest that, compared to traveltime tomography, MEWI can generate a more highly resolved velocity tomogram from shallow seismic data by inverting its low‐frequency components on coarse grids and its high‐frequency components on fine grids. The estimated water table in the MEWI tomogram is generally consistent with, but 9% deeper than, the traveltime tomo gram, showing that the water storage in this wadi might be less than expected from the traveltime tomogram. We believe that the more accurate MEWI tomogram will make an economically important difference in assessing the storage potential of this wadi and wadis throughout the world.
Technologies for Wellbeing and Healthy Living
Authors: Meyer Jochen
Published: July 2014

It is a strange paradox that the public is talking about health technology but cares more about disease technology: people address chronic diseases, people want to change unhealthy behaviors, people aim to help carers and nurses - but people hardly ever look at those who are and want to remain healthy. This is even stranger, as times of health outnumber periods of disease in most persons` lifetimes. Somewhat surprisingly, technology available today is not yet optimally suited to help staying healthy. The authors discuss challenges with respect to the adaption of health behavior models, long-term interaction, quality of data, design of devices, primary use of data, and life-long data. And the authors suggest understanding technical systems for wellbeing as navigational systems, guiding a person through life on a healthy path.
Born Global Market Dominators
Authors: Wurster Simone , Blind Knut , Fischer Sebastian
Published: July 2014

Issues of dominance in the market place, ‘standards wars' and ‘battles for dominance' between large companies are frequently addressed by researchers and the business press alike. The existence of companies that could establish internationally dominant solutions to customers' problems within a few years after their founding is quite unknown and the reasons for their success are hardly investigated so far. Therefore, they are not covered by traditional stage models for the establishment of dominant solutions. Based on 22 cases and a new success factors model, this article shows how young companies can successfully establish their technologies as dominant solutions in the global market.
A Framework for Measuring the Deployment of Internet Protocols
Authors: Levä Tapio , Riikonen Antti , Töyli Juuso , Hämmäinen Heikki
Published: July 2014

Internet protocols spread to potential adopters through several successive phases of implementation, commercialization, acquisition, and adoption of the protocol. This process of protocol deployment involves several stakeholders and varies depending on the deployment environment and the protocol in question. This complexity and the lack of comprehensive measurement studies call for a further conceptualization of measuring protocol diffusion along the whole deployment process. Therefore, this article develops a framework for measuring the deployment of Internet protocols, consisting of deployment steps, deployment models, deployment measures, and data sources. The measures are further linked to each other through deployment gaps and delays. In order to demonstrate the framework, it is used to assess how a set of pre-installed protocols spread in the Finnish mobile market. The framework highlights the differences between the deployment models and the importance to use both the deployment measures and gaps in the analysis of protocol success. Furthermore, the illustrative results indicate that protocol deployment is driven by applications, and show the existence of large deployment gaps between the protocol possession and usage. The results are relevant especially to researchers interested in holistically analyzing protocol deployment and protocol developers for measuring and improving the success of their protocols.
A Study on Bayesian Decision Theoretic Rough Set
Authors: Halder Sharmistha Bhattacharya
Published: July 2014

The concept of rough set was first developed by Pawlak (1982). After that it has been successfully applied in many research fields, such as pattern recognition, machine learning, knowledge acquisition, economic forecasting and data mining. But the original rough set model cannot effectively deal with data sets which have noisy data and latent useful knowledge in the boundary region may not be fully captured. In order to overcome such limitations, some extended rough set models have been put forward which combine with other available soft computing technologies. Many researchers were motivated to investigate probabilistic approaches to rough set theory. Variable precision rough set model (VPRSM) is one of the most important extensions. Bayesian rough set model (BRSM) (Slezak & Ziarko, 2002), as the hybrid development between rough set theory and Bayesian reasoning, can deal with many practical problems which could not be effectively handled by original rough set model. Based on Bayesian decision procedure with minimum risk, Yao (1990) puts forward a new model called decision theoretic rough set model (DTRSM) which brings new insights into the probabilistic approaches to rough set theory. Throughout this paper, the concept of decision theoretic rough set is studied and also a new concept of Bayesian decision theoretic rough set is introduced. Lastly a comparative study is done between Bayesian decision theoretic rough set and Rough set defined by Pawlak (1982).
Cyber-Synchronicity
Authors: Smith Jeffrey
Published: July 2014

Communication affects us as human beings, whether via virtual worlds or the material one, and involves a variety of issues. Some are issues both worlds have in common, while others are unique, depending on the individuals involved, the communities inhabited, and the mediums utilized. Prior research has demonstrated that, for inhabitants who reside both in the virtual and the material, there is significant effect on the experience of both worlds stemming from both worlds. This study combines Gergen's Saturated Self theory, Hamman's Virtual Community theory, and Van Manen's four phenomenological existentials to posit both an additional four existentials unique to virtual communication and a theoretical model that can be used to chart the impact of each world upon the other. The Cyber-Synchronicity model will aid in a deeper understanding of the meaning and impact of synchronous and synonymous participation in a virtual community.
An Update on Health Information Technology
Authors: Juanes Juan A. , Ruisoto Pablo , Cabrero Francisco J , Prats-Galino Alberto
Published: July 2014

This study reviews the latest innovations in medical informatics based on digital and technological applications. In particular, we focus on the contributions developed by VisualMed System (Medical Visualization Systems) Group. Applications are presented in four categories: first, development of digital anatomical viewers; second, development of augmented reality applications; third, development of simulator applications; and finally, examples of developed applications for portable devices such as smartphones and tablets are also presented. Every applications share multiple interactivity features and rich visual medical content. Finally, implications for teaching and learning in health sciences are discussed. In particular, the key role of these applications in order to enhance autonomous learning and to visually support traditional teaching methods.
Effect of Cooling Rate on the Microstructures and Mechanical Properties of Mg-Y Alloys
Authors: Sim Goh Chwee , Tun Khin Sandar , Tan Xing He , Weng Chan Kwok Jimmy , Onn Kwok Wai Richard , Gupta Manoj , Lee Teck Kheng
Published: July 2014

Magnesium (Mg) alloys with 30 weight percentage (wt.%) of yttrium (Y) were gravity cast using copper mold and copper mold with air cooling. The results were benchmarked with Mg-30Y alloys produced using steel mold casting. It was found that the Mg-30Y alloys cast using the copper mold with air cooling exhibited the best mechanical properties, whereby the compression strength and the Vickers hardness value peak at 633 MPa and 137.6 HV respectively. Microstructural observations show that with increasing cooling rate, and hence increasing molten metal solidification rate, the dendrite structures are much finer due to enhanced nucleation rate. This is due to limited time for the dendrites to coarsen.
Ionic Distribution in Plasma for the Process of Electron-Beam Physical Vapor Deposition
Authors: Ho Ching Yen , Wu Wen Chieh
Published: July 2014

This paper investigates ionic distribution generated by electron beam (EB) during Physical Vapor Deposition (PVD). EB-PVD has a wide range of applications in thermal barrier coatings (TBCs) due to favorable characteristics compared with other coating processes. EB-PVD is an important material coating method that utilizes electron beams as heat sources to evaporate materials, which are then deposited on a substrate. Therefore EB-induced ionic distribution dominates the quality and thickness of the final coating on the substrate. Assuming the EB-generated plasma to be only a function of radial direction, the steady-state equations of continuity and motion combined with Posson’s equation were utilized to analyze the plasma distributions along the radial direction. The available experimental data are also used to validate the model. The results show that the coating efficiency can be improved by decreasing the ratio of the electron thermal energy to the initial ion energy and increasing the ratio of the initial ion density to the initial electron density. The uniformity of coating can be achieved by reducing the initial ion density.
Design and Optimization of Honeycomb Corrugated Chaff Forming Roller
Authors: Yang Xiao Ping , Zhong Bo , Luo Chang Jie
Published: July 2014

Abstract. By analyzing the material properties and forming characteristics of the 0.8mm length side hexagon honeycomb corrugated chaff , we studied forming roller’s design and optimization while making corrugated chaffs used forming method and focus on the influence of the chamfer of teeth top edge and number of teeth to forming quality at the corrugated chaff corner .We used finite element analysis software ANSYS / LS-DYNA to simulate the forming process of corrugated chaff , studied the stress contour and stress-time curve of typical element, found the optimal chamfer of teeth top edge and number of teeth, then we used the designed forming roller to verify the effect of chaff forming . By comparison experimental and simulation results,we found good agreement between the two, when the chamfer of teeth top edge dj = 0.08mm, number of teeth z = 40, the chaff has the best forming quality .
Research on Flange State during Spinning of AZ31 Magnesium Alloy Rotators
Authors: Li Lin Lin , Cai Zhong Yi , Xu Heng Qiu , Wang Mi , Zhang Rui , Wang Da Li , Zhang Yu Li , Gao Xiao Fei
Published: July 2014

The stress-strain condition and flange state during spinning of magnesium alloy rotators was researched. The preliminary conclusion is obtained: There are three states during spinning of rotators, which appropriate "forward" and "straight" is conducive to forming, but the "backward" should be avoided. Based on ABAQUS/Explicit platform to analyze flange state and forming quality of these rotators under various load conditions. FE analysis shows: blank diameter, roller structure and feed ratio are key factors of formability. Most favorable process parameters are blank diameter 160mm, feed ratio 0.8r/mm, while using combination roller. Finally, the role of the main process parameters on flange state was verified by experiment method.
Numerical Simulation and Analysis for Blow-Off Flow Field of a Wet Skin Pass Mill
Authors: Qiao Hai Jun , Gao Dian Rong
Published: July 2014

Blow-off air nozzles blow away the residual emulsion from roll gap and strip surface. Algorithm SIMPLY were used for the finite element numerical simulation for a representational air nozzle blow-off flow field near the roll gap in a cold-rolled skin pass mill. The working conditions of the blow-off flow field was the combination of gas pressure of 0, 2, 5 and 10bar and flip angle of 0°, 5°, 10°, 15°, 20° and 25°. The study provides a reference for control and optimization for the removal process of residual emulsion and design, manufacture, model selection and optimization for the related air nozzles.
Effects of External Magnetic Field on Intensity of Plasma Flow
Authors: Ho Ching Yen , Tsai Yu Hsiang , Ma Chung
Published: July 2014

This paper investigates the intensity distribution along the radial direction for plasma flow subject to external magnetic Field. The toroidal external magnetism is applied in the transverse direction of plasma flow. Considering the steady-state continuity and momentum of the plasma flow subject to external magnetic field, the intensity profile of the plasma is obtained. The results quantitatively verify the intensity enhancement of the plasma with the increasing external magnetic field.
Effect of Fiber Volume Fraction on Compressive and Flexural Properties of High-Strength Steel Fiber Reinforced Concrete
Authors: Ahn Kyung Lim , Jang Seok Joon , Yun Yeon Jun , Yu Dae Geun , Yun Hyun Do
Published: July 2014

The purpose of this study is to investigate the compressive and flexural properties of high-strength steel fiber reinforced concrete (SFRC). For this purpose, a total of 5 mixture whose variable is fiber volume fraction, were made and tested in a range of high strength with 70MPa. In case of normal and ultra-high strength, experimental results were collected from existing literatures on the tests conducted in South Korea. Flexural behavior of SFRC is enhanced according to the fiber volume fraction and compressive strength. Experimental and collected data were applied to existing equations, so it was found that the distinctions occurred between experimental or collected data and calculated values. Thus, more efforts are required to predict the flexural behavior of SFRC manufactured in South Korea with respect to the fiber volume fraction.
The Study of High Efficiency Photovoltaic Devices with Metal Nanoparticles
Authors: Hsieh Li Zen , Lin Mo Hua , Duan Xi Ming
Published: July 2014

The photovoltaic devices with free electrons of nanometal were studied by nanometal scattering and near-field surface plasmon resonance (SPR) enhancing. The results revealed that devices with metal nonoparticles can improve the photoelectric conversion efficiency of solar cells. The metal nanoparticles roughness also reduced the incident light reflection and increased the electrical conductivity of metal characteristics.
Resistances of Nano-Titanium Dioxide on the Ultraviolet Aging of Poly(butylene succinate)
Authors: Liu Li , Wang Yong Ren , Zuo Yu Ping , Liu Dan , Guo Bao Hua
Published: July 2014

Poly (butylene succinate)/titanium dioxide nanocomposite was prepared by melt blending in a HAAKE mixer. The degradation was studied under ultraviolet aging conditions. The SEM results showed that there were not any visible pores in the nanocomposite surface, which indicated that the addition of TiO2 could resist the ultraviolet degradation in some degree. The FT-IR results presented that the neat PBS and 1 wt% PBS/TiO2 nanocomposite had an overall increased peak intensities, especially for the carbonyl group. The intensities of neat PBS after 72h ultraviolet aging were increased significant than that of the 1 wt% PBS/TiO2 nanocomposite. FT-IR results further confirmed the SEM results and revealed the mechanism of the PBS degradation under ultraviolet aging conditions.
Mechanical Properties of Reactive Powder Concrete Containing Fly Ash under Different Curing Regimes
Authors: Wang De Hong , Ju Yan Zhong , Zheng Wen Zhong
Published: July 2014

Mechanical properties of reactive powder concrete (RPC) containing fly ash were investigated under different curing regimes (standard and steam curing) in this study. The experimental results indicate that, flexural strength of RPC increased considerably after steam curing, compared to the standard curing. Steam curing had no significant effect on compressive strength of RPC. Increasing the fly ash content improved the flexural strength of RPC under all curing regimes considerably. The compressive strength reached a maximum (103.8MPa) when the fly to ash and cement ratio is 0.3.
Structural Behaviors of Non-Ductile Reinforced Concrete Frames with Engineered Cement Composite (ECC) Wing Wall Elements
Authors: Kang Dae Hyun , Lim Won Gyun , Kim Hye Ran , Lee Mi Hwa , Yun Hyun Do
Published: July 2014

In this paper, an experimental investigation was carried out to evaluate the application of engineered cement composite (ECC) wing wall elements for seismic strengthening of reinforced concrete (RC) buildings with non-ductile reinforcement details. The ECC is mixed with cement, silica fume, fly ash and polyvinyl alcohol (PVA) fiber. The ECC wing wall elements were fitted on three side of RC frame; upper beam, lower beam and column. Two specimens, non-ductile RC bare frame and RC frame strengthened with ECC wing wall, were made for this study. These specimens were made as a third scale for this study. The specimens were loaded through 1,000 kN actuator that consists of two cycles at a displacement level. The test results showed that the seismic strengthening method of ECC wing wall elements had a significant effect to improve seismic performance of non-ductile RC bare frame. As a result, the application of ECC wing wall elements in non-ductile RC bare frame may be effective alternative to seismic retrofit of non-ductile buildings.
Lie Algebraic Structure and Poisson Conservation Law for One Class of Multi-Dimensional Coupled Oscillators
Authors: Sun Yi , Chen Ben Yong , Fu Jing Li
Published: July 2014

This paper researches Lie algebraic structure and Poisson conservation law for one class of multi-dimensional coupled oscillators. The equations of motion are established, and the coupled terms in the equations of motion are eliminated by introducing normal transformations. The Lie algebraic structure and Poisson conservation law are given. Finally, an example is given to illustrate the results.
K-MORE: Design of a Kinect Motion Oriented iRobotics Environment
Authors: Ku Hao Hsiang , Kao Tsai Sheng , Chi Ching Ho
Published: July 2014

Internet and cloud-based robot services have been attractive and developed. Nowadays, how to enhance the controllability of intelligent robots is an important issue for researchers. This study designs a Kinect Motion Oriented Intelligent-Robot Environment, which is called K-MORE. K-MORE is designed for easily controlling intelligent robots, which is composed of Sensing-based Interactive Robot (SIR) service platform and Cloud Environment. K-MORE is based on open service platforms, including Arduinos, Google Android, and Google App Engine (GAE). Robots not only can be controlled by a smartphone but also can be triggered by events via GAE or Ontology Case-based Reasoning (OCBR). Furthermore, users can use a smartphone to control robots. K-MORE is well-integrated with users, intelligent robots, sensors and the cloud environment. Finally, K-MORE can be an inference model for researchers when developing a robotics-based open service platform in the future.
Design of Reflective/Diffractive Objective Optical System for Handed Low-Light Night Vision Google
Authors: Li Ning , Zhang Rui Lan
Published: July 2014

For the design direction of low-light night vision goggle become more and more miniaturization and high image quality [1], this artical design a reflective/diffractive objective optical system with optical software ZEMAX. It combines diffractive elements with reflective elements to design a reflective/diffractive objective with a 14.5° field of view and a 1.0/1.2 relative aperture and a 95mm focal length , and it introduces an improved method based on primary aberration theory in reflective/diffractive hybrid optical system. Etching diffractive optical element on the mirror can be usful for correcting aberration and improving the image quality.
Selective Tension Apparatus Development of Vibration Membrane for Stereo Speaker Production
Authors: Kim Uk Su , Jung Yoon Jun , Jeong Ba Wi , Kim Min Su , Yang Gil Surp , Park Jeong Woo
Published: July 2014

In recent years, interest is growing about stereoscopic to the dissemination and development of 3D-TV. However, according to the development of image is also very important to the development of real sound. So recently interest is growing about the stereo sound. It is limited to typical speakers for implementing to stereo speakers. So, recently, has improved sound using flat panel sound. In this study, analyzed apparatus and selected optimum points through the design and CAE (Computer aided engineering) for production of selective tension apparatus of vibration membrane for the flat panel type speaker production. Many tension points offer variety sound environments but it action adverse element in mass production. In this study analyzed through the CAE by designing in tension point location and tension frame for stereo speaker production. CAE was analyzed the optimized conditions using ansys program. The results variously changed parts of affected tension by tension point location or according to the quantity clamped. We selected to optimized tension point and tension frame based on the simulation results. This study is intended to suitable for mass production in the stereo speaker production.
Thermal Bubble Nucleation in a Nanochannel: An Experiment Investigation
Authors: Chen Min , Jiang Kun Peng , Jiang Da Wei , Chen Dong Dong , Zhao Yan Fang
Published: July 2014

We investigated the nanoscale thermal bubble nucleation based on the principle of Coulter counter. With micro-nanofabrication technologies, a device was designed and fabricated, and a detection platform was set up which was used to investigate the thermal bubble nucleation of aqueous solution confined in a nanochannel with a cross size of about 100 nm×100 nm. Results show that with the temperature of the solution confined in the nanochannel increasing, the current through the channel increases first and then decreases, and vanishes after a fluctuating period. It can be found that the generating thermal bubbles can hinder the current flowing through the nanochannel. In addition, the shrinking and expanding of thermal bubbles’ volume correspond to the increase and decrease of the current. Finally, the thermal bubbles block the nanochannel entirely. Through the experiment results, our device can be applied to investigate the complex behaviors of thermal bubble produced in aqueous solution confined in nanochannels, effectively.
Geological Adaptive Cutterhead Selection for EPB Shield Based on BP Neural Network
Authors: Lin Lai Kuang , Xia Yi Min , He Fei , Mao Qing Song , Zhang Kui
Published: July 2014

In view of complex and fuzziness of geological adaptive cutterhead selection for earth pressure balance (EPB) shield, a cutterhead selection method based on BP neural network is put forward. Considering the structure characteristics of EPB shield cutterhead, typical cutterhead types are classified and summarized based on cutterhead topology structure and number of spokes. After analyzing the determinants of cutterhead selection, one-to-many mapping relation between cutterhead type and geological parameters is put forward, and then core geologic parameters related to cutterhead selection are concluded. The feasibility of using neural network method to choose the cutterhead type is analyzed, and a BP neural network training model for cutterhead selection is set up and tested in testing sample data. The result shows that the selected cutterhead and the construction cutterhead are basically consistent. The feasibility of this method is proved and it can be theoretical basis for the cutterhead structure design which will improve scientific of cutterhead selection.
Effects of TiC/TiN Contents and Sintering Temperatures on Microstructure and Mechanical Properties of Al2O3/Ti(C,N) Ceramic Materials
Authors: Wang Min , Zhao Jun , Wang Li Li
Published: July 2014

The Ti (C, N) solid solution is as one particle in most study of Al2O3/Ti (C, N) ceramic materials. In this paper the contents of TiC and TiN will be considered separately, the mechanical properties and microstructures of Al2O3/Ti (C,N) ceramic materials are study in different contents of TiC/TiN and sintering temperatures. It is indicated that the TiC/TiN contents and sintering temperatures have important effect on microstructures and mechanical properties of Al2O3/Ti (C,N) ceramic materials.
Study Accompanying Phenomenas at the Cutting Zone during Drilling Austenitic Stainless Steel X02Cr20Ni8TiMo
Authors: Jurko Jozef , Panda Anton , Behún Marcel
Published: July 2014

The The basic hypothesis of this article focuses on the study of accompanying phenomenas in the cutting zone of the stainless steels, with regard to the elimination of occurrence of poor-quality holes when drilling into new austenitic ELC (Extra Low Carbon) stainless steels. The problem of drilling holes with diameter D=1 to 9 mm resides in the fact that 20 to 28 % of these holes do not comply with prescribed requested requirements. The result of the deformation is very often the unforeseen destruction of the cutting tools; therefore their operational tool life is reduced. This article presents the results of experiments focusing on the study of the plastic deformation of the chips, at drilling with diameter d=5 mm when drilling into a new austenitic ELC stainless steels. This study also includes an analysis of accompanying phenomena in the cutting zone by measuring some selected parameters. The results of the experiments were compared with Cr18Ni8 steel and then verified when drilling holes into specific products.
Residual Life Prediction for In-Service Pressure Vessels Containing Crack Defects
Authors: Lin Si Jian , Long Wei , Tian Da Qing
Published: July 2014

Residual life is tightly related to the period of examine and repair of pressure vessels. The accuracy of residual life prediction may have a great influence on the reliability and the cost of examine and repair of the in-service pressure vessels containing crack defects. Aimed at the problem of residual life prediction of pressure vessels containing crack defects, we put forward a new method on the basis of crack failure path and rate, which is based on the fracture mechanics and failure assessment diagram (FAD). Though there may be a lot of researches to do, this algorithm is higher in efficiency and easy to calculate, compared to the other methods. This method is original and creative. It provides a new research approach to study the residual life prediction.
Simulation Analysis of Portal Crane Braking Effect with Dual-Stage Brakes under Fluctuating Wind Load
Authors: Qing Guang Wei , Jin Hui , Hu Jing Bo
Published: July 2014

In order to grasp the braking effect of the portal crane after the installation of auxiliary wind safety device, the braking process of real harbor crane with dual-stage windproof braking system exposed to fluctuating wind is simulated. The effect on the crane braking performance of braking device response lag and artificially lowering working braking force is also analyzed. It is demonstrated that the dual-stage brake system is superior to the single and could improve the windproof ability when working braking force decline.
Design on Structural Test and Modeling of the Mounting Structure of a GTF Aircraft Engine
Authors: Hao Yong , Tao Zhi
Published: July 2014

A mounting system of a geared turbofan (GTF) engine is presented. It play a static determined structure when connecting the engine and aircraft pylon. To conduct the test on the mounting system a fake engine body is designed. The experiment setup is also demonstrated. The finite element (FE) modeling on the mounting system is studied using MSC/NASTRAN and then the main parameters of key parts are given. The presented method is validated with static analysis. A normal mode analysis of the model also shows that it can be adopted in the dynamical design.
Numerical Investigation on Supercavitating Phenomenon for the Variable-Lateral-Force Cavitator
Authors: Hu Xiao , Gao Ye
Published: July 2014

A control scheme named the variable-lateral-force cavitator was proposed based on the theory of traditional variable-drag cavitator, the three-dimensional cavitating flow around the cavitator was investigated as well. It is confirmed that the drag, lift, lateral forces and cavity size of underwater vehicle can be effectively adjusted through the movements of control element of variable-lateral-force cavitator in both longitudinal and circumferential directions. In addition, an amount of pitching (or yawing) force equivalent to 30% of drag in magnitude will be produced when the displacement of control element on either side is inconsistent with each other, and the cavity section appears concave inwards simultaneously.
The Design of Dynamic Model of Engineering Material Arresting System
Authors: Liu Na , Yu Hong Bin
Published: July 2014

Engineered Material Arresting System (EMAS) is a new type of soft ground arresting system that can safely arrest the overrun aircraft in an allowed distance without injuring aircraft passengers and damaging aircraft landing gear. The paper provides an overview of the EMAS background firstly. A numerical simulation is carried out by VB.NET software through reasonable hypothesis and simplification the system of dynamic model. The model is reasonable and feasible compared with prototype experiment results.
The Application of Safety Membranes in Hydropower Plant
Authors: Chen Sheng , Zhang Jian , Yu Xiao Dong
Published: July 2014

Safety membrane is a good mechanical device that can be applied in middle and small hydropower stations instead of a surge tank. This present study deals with the determination of three most important parameters of safety membrane, rupture pressure, diameter, and number. The mathematical model of transient process is established by introducing the method of characteristic, which is used for the simulation of the rupture behavior of safety membrane. Then the model is applied to a specific hydropower station that only can employ safety membrane as the regulating measurement, and it shows good performance. The achievements of the study can serve as a reference for similar projects.
Screw Fixing Fracture and Fatigue Failure on Particleboard Surface Using Different Style of Screw Insertion Technique
Authors: Abu Falah , Ahmad Mansur
Published: July 2014

Particleboard jointing during screw fixing activities weakens the furniture, kitchen and household joinery. Screw jointing on the particleboard surface contribute to the particleboard fracture. Fracture on the particleboard surface will promote failure in jointing. This study was done to determine the effect of applying different style of screw insertion technique on fracture and fatigue failure. Three different style of screw insertion technique applied was self-drilling, pilot-hole and pilot-hole with countersunk (P+CSK) insertion technique. From the study, applications of P+CSK screw insertion technique caused highest number of damages. 57% of common chipboard screw samples were damaged when P+CSK screw insertion technique was used. Most fracture failure is the type 6 mode. There is no significance difference in number of damages for self-drilling insertion technique and pilot-hole insertion technique. Therefore, self-drilling insertion technique, which is the insertion technique used by kitchen cabinet installer was preferable due to the ease of handling during screw insertion.
Performance and Loads Investigation of Optimum Speed Rotors
Authors: Liu Shi Ming , Yang Wei Dong , Dong Ling Hua , Wu Jie
Published: July 2014

Performance of helicopters can be significantly influenced by rotor speed variation. A comprehensive model is built to exam the influences of rotating speed on performance and blade loads of a variable speed rotor. The results indicate that for a 2,200kg gross weight helicopter, power reduction is up to 30% at 100km/h by slowing the rotor properly. For lower gross weights, the reductions in rotor rotating speed and power savings are more apparent. The optimum rotating speed may cause a 20.5% increase in endurance and 8.5% in range by thoroughly consuming 400kg of fuel. Rotor RPM variation has an important effect on blade loads. For 100km/h and 2,200kg gross weight, amplitudes for most of the harmonic loads decrease with reduced rotor RPM.
Analysis of Micro-Crack Inducing Mechanism by Graphite in Bond Area in Laser Repairing Grey Cast Iron
Authors: Yi Peng , Fan Chang Feng , Xu Peng Yun , Li Chuan Xiu
Published: July 2014

Experimental researches are developed on grey cast iron surface to clarify the micro-crack formation mechanism and influence law of graphite phase in bond area. The results show that unreasonable morphology of flake graphite phase in bond area is an important cause of micro-crack initiation and propagation. Their cusps almost cross toward the molten layer and through the bond area. Then the micro-crack grows along the grain boundary. Additionally, under condition of certain specific energy input, an appropriate increase in laser power and scanning speed can enhance molten mass convection. It can be also helpful for the distribution rationalization of graphite phase and reduce crack sources.
Study of Improving Low Voltage Ride - Through Capability of Doubly - Fed Induction Generator by Using DVR
Authors: Jian Chen , Feng Ren Yong , Bin Hu Hong
Published: July 2014

with the increasing proportion of wind power in whole power system ,the influence between wind power system and grid become more and more seriously ,so it is great important to research how to keep the connection between the wind power system and grid when grid voltage drops .The paper presents a new method to realize the low voltage ride - through (LVRT) of DFIG by using dynamic voltage restorer (DVR). Once the grid voltage drops,DVR will be put into use and produce compensation voltage to keep the stator side voltage steady .And it also can stop operation after the fault resolution.The paper builds a simulation model of DFIG and gives simulation results on PSCAD/EMTDC platform .
Effect of Biodiesel from Waste Cooking Oil on Mixture Formation and Emission of Burner Combustion
Authors: Khalid Amir , Lambosi Latip , Lokman M.M. , Manshoor Bukhari , Zaman Izzuddin , Sapit Azwan , Amirnordin Shahrin Hisham
Published: July 2014

Stringent emissions regulations and increasing concern on greenhouse emissions are challenging the researcher to find the alternative fuels like biomass and biodiesel. However, the main issue biodiesel fuel (BDF) from waste cooking oil (WCO) is high toxic emission of Nitrogen Oxides (NOx) and particulate matter (PM) in burning process of burner combustion. Thus, the emulsification concept of BDF and water mixing were studied with focusing in controlling of combustion process especially during early stage combustion in order to minimize the harmful emission. This main purpose of this research is to investigate the effects of biodiesel fuel from waste cooking oil on mixture formation and emission in burner system. The mixture formation behavior of BDF-water-air premixing was investigated due to this spray characteristics will contribute in combustion process that predominantly influence to the NOx and PM emission production. Blending of biodiesel ratio was varied from 5vol%(WCO5)-15vol%(WCO15). Water content under emulsified biodiesel was varied up to 15 percent, and equivalence ratio from 0.6 to 2.0. The real spray image of emulsified WCO fuel and different equivalence ratio were captured by optical visualization system together with color digital camera. The images of the spatial distribution of WCO fuel-water-air mixing will be further analyzed compared with the exhaust emission production in order to understand the influences of mixture formation on combustion process and burning process. Increased of water content, promoted fuel-air premixing and spray tip penetration thus predominantly influences to the reduction the exhaust emissions.
The Design of Data Acquisition System in Wireless Dynamic Strain Acquisition Technology
Authors: Ding Chen , Dai Ya Wen , Li Peng , Sun Yang , Wang Wei Zheng , Shen Jia Wei
Published: July 2014

Dynamic strain acquisition technology is becoming increasingly important in industrial production. Compared with the static strain acquisition technology,the dynamic stain acquisition technology provided a much wider range of frequencies from 0~100KHz which required a much more accurate data acquisition system. This paper proposed an accurate data acquisition system which included electric bridge、constant current source、signal amplifier and anti-aliasing filter. This system has largely suppressed noise and increased the performance of the dynamic strain acquisition.
Whole-Condition Dynamic Alarm Research of Hydropower Unit Operating Parameters
Authors: Ge Xin Feng , Feng Yuan , Liu Yi Zhou , Zhang Yu Quan , Zheng Yuan
Published: July 2014

Set the alarm value in the condition monitoring system of hydropower unit to monitor unit state parameters, if the difference between the two values exceeds the safety threshold, the alarm works, it is an effective method. Now the state parameters alarm values are set up mainly for the stable operation area in the unit condition monitoring system, which were not suit for low load conditions and in the process of load. To realize the full condition dynamic alarm of hydroelectric generating units, they are two ways: (1), build unit state parameter prediction model, compared predict values with the measured values. (2), set the alarm line, when the measured value exceeds the alarm line, the alarm works,. These two methods are considered the working condition head and output .This paper introduces several different alarm line settings, such as line alarm, partition line alarm, dynamic alarm curve and dynamic alarm surface.
Energy Saving Algorithm Research Based on Interior Monitoring System
Authors: Zhu Kai , Liang Yin Cheng , Qiao Xu
Published: July 2014

Energy consumption is a main area in wireless sensor network researching. Interior monitoring system is designed by organized ZigBee wireless network. Address assignment mechanism is put forward and the result about sensor nodes is displayed. Aiming at the problems of LEACH algorithm that all nodes will be assigned cluster head, this paper proposes the algorithm that cluster head projected in first every round is effective until the next round so that reducing energy consumption in competition about cluster head. Through the simulation test, network address assignment is normal, data can be displayed through LED, and network telecommunication is stable.