bluuebunny/crossref_metadata_2025 huggingface dataset:
A Query Optimization Technology Based on Data Partition
Authors: Dai Jian Qiang
Published: April 2014

With the promotion of 3G networks and upcoming 4G network, mobile phone users in constant rise. The volume of data they produce will soar every day. A variety of data appear results in the database have rapid increasing. Some application system in access to these heterogeneous, huge databases is bound to access difficulties, the problem of low efficiency of access. Query optimization technology is proposed in this paper, based on data partitioning, by reducing the database size to solve the problem of memory and huge amounts of data access problems. From the experiment test, the method can effectively improve the efficiency of huge amounts of data access, can get satisfactory results.
Information Management of Car Oil Consumption on Mobile with Android OS
Authors: Chen Li Jia , Yin Chao , Qian Jiang , Xu Qin , Yan Yun Yang , Zhu Quan Yin
Published: April 2014

In order to help driver to know the fuel efficiency of his car, the application software for information management of car oil consumption was developed based on the Android phones. The oil information filling up the car and the gas station information are inputted by the driver using the software each time. Then the fuel consumption information could be counted automatically. The statistic results could be shown as table, chart or curve respectively. The calculation method of car oil consumption is proposed based on the amount of oil left. It is more accurate and effective than traditional method which is based on oil lamp.
Software Design for High-Speed Data Capture
Authors: Zhang Wei Feng
Published: April 2014

10G Ethernet technology has been widely used in modern high speed communication system. As a result, program design for high-speed data capture on 10G Ethernet, as the first and important step in network monitor and analysis system, has become a challenging task. This paper proposed a high-speed data capture method based on WinCap and shared memory pool technology and has features of high speed, low packet loss rate, high efficiency and good portability. The system test and data analysis proved that the proposed method in this paper can effectively capture the data at speed of 6Gbps and stably keep the packet loss rate under 0.03%.
A Fractional-Order Laplacian Operator for Image Edge Detection
Authors: Tian Dan , Wu Jing Fei , Yang Ya Jie
Published: April 2014

This paper proposes a novel fractional-order Laplacian operator for image edge detection. The proposed operator can be seen as generalization of the second-order Laplacian operator. The goal is to utilize the global characteristic of the fractional derivative for extracting more edge details. A thresholding is set based on the average fractional-order gradient for marking the edge points, and then the image edge can be extracted. Experiments show that the proposed fractional-order operator yields good visual effects.
A Method of Detecting Hardware Trojans Based on Side-Channel Analysis
Authors: Feng Wen Feng , Li Lei , Li Zhen
Published: April 2014

In recent years, integrated circuits subject to hardware Trojans attack in the design and manufacturing process, the security of chip and hardware security was threatened. Some detection methods of have been proposed, the most common of those methods is based on side-channel signal analysis, however, since the effect of process noise, considering only the unilateral information that is difficult to effectively distinguish the noise and Trojans circuit. In this paper, the method still based on side-channel signal, but it is a combination of power and delay which was called the power-delay product (PDP). The idea proposed is verified by the benchmark circuit iscas85, the experimental results show that this method can effectively improve detection probability.
Approaches of Ontological Property Mapping Based on Multi-Strategy
Authors: Li Rong , Liu Lei
Published: April 2014

Ontology mapping is the technological foundation of semantic integration, ontology merging and ontology alignment. In this paper, we propose approaches of ontological property mapping based on multi-strategy. First we use different strategies to deal with data type property and object type property. Then the optimal property mapping results of multi strategies are chosen. Finally, we present experimental results with high accuracy and point out future possible research directions.
Big Data Based Design of Food Safety Cloud Platform
Authors: Chen Kai , Tan Hong , Gao Jie , Lu Yang
Published: April 2014

Food safety has been in the spotlight of the global attention. In 2013, Chinas food safety supervision policy was undertaken a major reform. China Food and Drug Administration (CFDA) takes over the responsibility of food safety management, which in the past was conducted by different government sectors. Under this new management system, how to carry out the practical work has become a new issue. This paper introduces an innovative food safety management mode adopted by Guizhou province. On the basis of latest information technology, food production enterprises, government, testing organizations and consumers are integrated into a unified food safety information service cloud platform. The core technology of cloud platform is composed of food safety knowledge system, testing management system, food safety information publicity system as well as mobile application. The food factory inspection data, government inspection data, testing organizations testing data and consumers purchasing information are integrated into food safety and nutrient test big data. Utilizing the data to explore the information that is needed by all the parties, this paper tries to provide a solution to the risk exchange problem faced by Chinas food safety issue. At the same time, food safety problem can be solved through the contribution of different stakeholders.
Construction of Network Coverage Information System for CMMB
Authors: Wang Xin Gang , Yan Ming , Li Jun Feng
Published: April 2014

The network size of China Mobile Multimedia Broadcasting (CMMB) has expanded rapidly, and population coverage ratio has significantly increased. Meanwhile requirements of users to CMMB network coverage have risen higher and higher. How to know the situation of CMMB network coverage accurately and resolve the problems of it timely and effectively has become the primary task for CMMB network coverage workers. In this paper, based on the design requirements of CMMB coverage analysis system and data system, the E-R diagram was adopted to realize the database design of three physical objects: coverage information, map information and user information. Furthermore, a logical structure model of database was created and the design process of database in CMMB coverage analysis system was analyzed in this paper, which can provide a reference for further development and optimization of CMMB coverage analysis system.
A New Color Fidelity Fast Denoising Algorithm for High-ISO Images
Authors: Kai Hun Chi , Tian Xiao Lin
Published: April 2014

A new color fidelity algorithm to reduce sensor noise for high-ISO images has been proposed. The new algorithm uses HSV color space on wavelet domain to denoise high-ISO images by a weighted mean filter, which is designed based on analysis of the different noise models of high-ISO images. Testing results are satisfactory, which have shown that the new algorithm could reduce noise in high-ISO images faster, as well as no any color distortion in original images during the denoising processing.
Design and Implementation of Web-Based E-Learning Platform
Authors: Nan Yang
Published: April 2014

This paper attends to study Windows Server and SQL Server to form a combination of the two operating systems to establish an online learning platform. The platform basically completed the user needs to achieve functional, but also focuses on the application of Ajax technology, the use of this technology at the user level can be completed without page refresh can be achieved through video effects, the data layer, it reduces the data access to the database pressure, improve the overall performance of the overall learning platform, the results show that the techniques of this paper can be used in a very good application and online learning platform.
Feasibility Study on the Method of Java Combined with OSG
Authors: Tang You Lu , Du Hong
Published: April 2014

The purpose of this study is to combine Java and OpenSceneGraph(OSG) for the development of 3D scene graph, and to play their individual advantages. This paper introduced the scene management, rendering process and other relevant theoretical knowledge about OSG, and elaborated the method about using OSG in java environment through java's JNI technology. According to this method, the constructing, rendering and dynamic roam of a simple 3D scene graph about one frontage road were realized, and the concrete realization processes of the application introduced in this essay. The results show java can be combined with OSG for the development of 3D scene graph friendly.
How to Design E-Government Information Resources Sharing Cloud Service Centers in China
Authors: Liu Bang Fan , Zhong Hui Hui , Tao Tao , Hu Yu Han
Published: April 2014

Cloud computing appears for the development of e-government to provide new ideas and direction. By the basic of cloud computing to build e-government information resources sharing cloud service centers, it is benefit for integration and sharing of information resources, at the same time, information security has also been effectively guaranteed; of course, it is not only Conducive to the establishment of efficient and transparent service-oriented, conservation-oriented, dynamic government; and facilitate to public oversight and political participation, but also conducive to improve the government's own work. Construction of e-government information resources sharing cloud service centers, technology is support system is to protect, to change the concept of interaction and look at the effectiveness.
How to Design the Cloud Computing Used in E-Government’s Information Security
Authors: Liu Bang Fan , Zhong Hui Hui , Wang Meng
Published: April 2014

Information security is a core issue to ensure the smooth implementation of e-government. On the one hand, cloud computing promote information security management from centralized to decentralized. Help to improve the ability of the information security of e-government. On the other hand, it can not be ignored that the unprecedented openness and complexity of cloud computing also threat to information security of e-government. In this paper, we shall discuss the building of the cloud computing information security of e-government from three aspects of technical, management and law.
A New Video Denoising Algorithm Based on Adaptive Polyview Fusion
Authors: Geng Xue Feng , Wan Yi
Published: April 2014

Video denoising is an important task to enhance video quality in many applications. The recently proposed Polyview Fusion (PVF) is one of the best methods that significantly improves results by applying 2-D denoising algorithm to multiple views (front, top and side views) and fusing the denoised results into one. In general, denoised result in smooth content is better than that in texture content; and if there is no significant motion in the video signal, the top or side view is mainly consisted of smooth content. Based on it, a new fusion method is proposed. Three denoised results are transformed into top or side views. And then they are divided into different regions and given different weights based on local features. After fusion and transformation, it obtains the final front view result. Experimental results confirm the better performance of the proposed method for the video sequences without significant amount of rapid motion.
Networked Production Management System for Outsourcing Based on Virtual Workshop Section
Authors: Yin Sheng , Yang Zhen Ya , Yang Ming
Published: April 2014

Aiming at the problems including the weakness of coordination and controllability in the process of outsourcing between small and medium-sized manufacturing enterprises, a conception of virtual workshop section (VWS) is put forward, the chief objectives of which are effectively control and optimize the allocation of resources, and a networked outsourcing management mode is established based on the VWS. According to this mode, a networked production management system for outsourcing (NPMSO) is put forward and the architecture, the running process included in the system are analyzed. At last, The system is successfully applied in a medium-sized motorcycle parts manufacturer, and good results are obtained.
On the Informationization Construction of College Archives Management
Authors: Huang Le Hui , Gui Bin
Published: April 2014

Information Management of University Documents is an important part of Digital Campus. The goals of university Document are the digitalization of resources of university documents, the cyberization of information service and the standardization of managing electronic documents. The document information with high quality and fast speed will support the development of university as well as serve the management of teaching activities and scientific research.
Research on Adaptive Strategy of Web Services
Authors: Lei Zhi Peng , Qiu Hang Ping , WU Ya Ning , YANG Zhi Cai
Published: April 2014

With the aim at resolving the failure problems of Web-Services-Based electronic information systems, which are caused by web services' failure, we propose a QoS model and evaluation methods of web services collaborated with LAN. On that basis, we design a composite adaptive strategy. This strategy uses the reliability of the web services to assist the selection, and uses the web services backup set to achieve a quick fix. The analysis of feasibility shows that this strategy can obviously reduce the failure ratio and the average recovery time of the composite services.
Towards the Study of Internet Qos that would Make Exploring Smalltalk a Real Possibility
Authors: Xu Xiao Qing
Published: April 2014

Unified highly-available information has led to many compelling advances, including evolutionary programming and virtual machines. Given the current status of replicated information, hackers worldwide particularly desire the refinement of voice-over-IP, which embodies the significant principles of networking. Hackers worldwide agree that self-learning symmetries are an interesting new topic in the field of robotics, and electrical engineers concur. In fact, few leading analysts would disagree with the construction of multi-processors, which embodies the natural principles of cryptography. Our focus in this position paper is not on whether RAID can be made compact, optimal, and real-time, but rather on proposing new heterogeneous configurations.
Research on Mechanism of PKI Trust Model
Authors: Bai Qing Hai , Zheng Ying , Zhao Lin Na , Chun Hua , Cheng Chun Ying
Published: April 2014

Trust model is the foundation of the whole secure architecture because it determines the trust form adopted and the risk to adopt it in network. So the research of trust model in PKI has been the hot spot of PKI technology. Firstly, some backgrounds of PKI and trust model as well as the problems to be solved by the model are discussed. Through analyzing and comparing several extant CA-based trust model, their advantages and disadvantages are described. Finally, PKI trust models are summarized, and the future research directions were discussed.
Design and Implementation the Wisdom Classroom Based on Short Board of the Teachers and Students
Authors: Cheng Nu Hua , Lin Xue Hai , Ni Yu Hua
Published: April 2014

This article explores the cloud computing era, schools, teachers, students, parents and education management institutions, through interactive classroom teaching equipment, build wisdom and effective classroom. Feedback based on classroom teaching and analysis of the short board of teachers and students, teachers teach on demand, student learning on demand. Push services using cloud services platform, to build personalized teaching and learning environment.
Temperature-Aware Scheduling Algorithm for Multi-Core System
Authors: Zhang Qi , Ruan You Lin , Gao Feng
Published: April 2014

High temperature will affect reliability and performance of multicore system. In this paper, we propose a temperature-aware task scheduling algorithm for real-time multi-core systems, which combines the DVFS and energy balancing by analyzing workload information and multicore utilization. At first, calculate average utilization ratio of tasks. Secondly, balancing strategy according to the workload is proposed for uniform temperature distribution on the cores. Finally, adapt the HR-2 and DVFS to scheduling tasks in each core. Simulation results show that the proposed scheduling algorithm obtains a better effect in temperature and energy-saving than other algorithms.
Research and Design on China Mobile Multimedia Broadcasting Network Planning
Authors: Yan Ming , Wang Xin Gang , Li Jun Feng
Published: April 2014

The network coverage condition of China Mobile Multimedia Broadcasting (CMMB) affects the signal quality of the CMMB terminal directly. The requirements of signal coverage are different in different regions, the co-channel interference and the interference caused by signal in adjacent areas must be considered in the planning of transmitting station. In the process of transmitting station construction, reasonable planning for network coverage is helpful to save costs and improves the quality of the network. In this paper, the planning principle of CMMB coverage network was analyzed firstly, and then an effective solution for network planning was presented according to the specific needs and the condition of network construction in Fuzhou province. On the basis of controlling construction cost, the solution achieves the required network coverage ratio.
Design and Application of Task Scheduling Module Based on Priority Table Query in Wireless Sensor Network Node
Authors: Duan Kang Hong , Zhang Li Ting , Ma Long , Zhang Hong Xin
Published: April 2014

Event-driven systems and thread-driven systems are two major design philosophies of operating system in wireless sensor networks. Systems based on multi-threaded are more timeliness than the event-driven systems, which can meet the requirements of time-critical tasks by means of task preemption, while systems based on event-driven are more energy efficient.The article introduces a task scheduling module in event-driven system. The module takes a kind of priority table query method to choose the most important task with highest priority to schedule.It is seen that the module is suitable wireless sensor network.
The Simulation and Analysis of the Improved Algorithm about LEACH Protocol for Wireless Sensor Network
Authors: Ding Fang , Feng Na , Wu Su Zhuo
Published: April 2014

The uneven distribution of node energy consumption leads network to premature failure under LEACH protocol for wireless sensor network. For such problem, this paper presents a comprehensive algorithm. The residual energy will be taken into account when the cluster head is selected, and then multi-hop is used for forwarding in the process of transferring data. This achieves balanced distribution of network energy effectively. Simulation results show that the improved algorithm can prolong network lifetime, which is significantly better than LEACH protocol.
The Overlay Deployment Model under Interference Based on Marginal Fitting
Authors: Lin Yi Xuan
Published: April 2014

Under the condition of interference, when to optimize the network deployment with the energy of the radiation characteristics of node, it is significant to improve the efficiency of the objective function evaluation.The overlap deployment model based on the compression projection is put forward in this paper, including the projection grid model based on the margin fitting, and the fusion boundary generation based on the projection grid, measurement of covered area and overlap coefficient evaluation algorithm to provide the efficient algorithm for the calculation of optimization goals such as the integration area, cover index and overlap coefficient . It changed the past calculation mode, which is random and extensive, as Monte Carlo sampling and the physical grid statistics method. The algorithm analysis and experiments showed that, the overlap deployment model based on the compression projection, compared with the previous model, had the characteristics of high precision and low-power, it can complete the calculation three indicators of the integration area,the covering index and overlap index with the accuracy of up to 99%.
Error Correction of Coding of Wireless Transmission Channel of Digital Images
Authors: Yue Ming Kai , Deng Jia Hao
Published: April 2014

The wireless channel model, which was suitable with the complex environment of battlefield, was built by analyzing the digital image of wireless transmission channel, the transmission characteristics and the fading type. The error correction of coding for the compressed code stream of image was carried out specifically with Turbo code, and the Simulink simulation model was designed. The system simulation analysis was carried out for the performance parameters that affect the Turbo code and the BER performance of as-built wireless channel model. The results showed that the Turbo code is a kind of error correction one, which is anti-fading and strong interference among codes. It can not only reach higher peak signal to noise ratio, but also transmit more steadily and more reliably in the changeable channel environment under noise interference. Furthermore, the turbo can be applied for code correction and controlling.
Research on Communication Circuit Applied in Street Lamp Control System
Authors: Yuan Bo , Lu Wen Bing , Xu Kai Yue
Published: April 2014

Taking the power distribution network situation in China into consideration, this paper proposes a communication circuit applied in street lamp control system. It first summarizes the overall design scheme of the control system. And then it demonstrates the high reliability of outbound Two Way Automatic Communication System (TWACS) within one transformer area and the low-cost characteristics of corresponding circuit. Finally, it proposes the design scheme of the communication circuit which can process Power Line Carrier communication (PLC) signals and outbound TWACS signals simultaneously, and it is based on single MCU. This design scheme is conducive to improving the communication efficiency and success rate of the street lamp control system to a great extent.
A New Robust Adaptive Backstepping for Ship Course-Keeping Control
Authors: Wang Hao Duo , Wang Qin Ruo , Yan Luo , Wu Xiao Ze
Published: April 2014

In this paper, we develop a new robust adaptive control scheme for ship steering by introducing alternative smooth function and Nussbaum function into backstepping approaches. And no requirements for the knowledge of control coefficient and the bound of unknown external disturbance, the proposed strategy implements the global stability of the ship course control and guarantees the global uniform boundedness of all signals of the resulting closed-loop system. Theoretical analysis demonstrates that tracking error asymptotically converges within an arbitrary small value pre-described by designer. Simulation results illustrate the effectiveness of the developed adaptive backstepping control law.
Semi-Supervised Machine Learning Algorithms for Classifying the Imbalanced Protocol Flows
Authors: Li Lin Lin , Zhang Xiao Yi , Zhang Xia , Li Qing
Published: April 2014

The collision that between a car and a train is the main type of accidents in the case railway level-crossing, which is proved by the arrangement diagram analysing. The fault tree analysis and the event tree analysis are used to assess the level of the risk of the level-crossing quantificationally. Some conclusions can be drawn: the collision of the railway level-crossing that between a car and a train will happen 2.552 in a year, which can bring 0.061 equivalent fatalities. This paper puts forward some precautionary measures that based on the minimal cut set of the collision of the accident and the most probable or the highest risk event.
A Video Compression Coding Algorithm for Network Content Transmission
Authors: Wang Xin Yang , Zhang Jian
Published: April 2014

Video compression coding technology is the key to implement network video transmission, and the increasing requirements of network content transmission quality accelerate the development of video compression coding technology. H.264 is a highly compressed digital video codec standard, and is a hybrid coding mode of differential pulse code modulation (DPCM) and transform encoding. In this paper, we introduced several techniques of hybrid coding algorithm based on H.264 standard, including differential coding, block matching motion prediction method, normalization criteria, variable-size block motion compensation, and multiple hypothesis motion compensation. We did extensive experiments on variable-size block motion compensation coding method. The experimental results show that, with the premise of the 1/4 pixel motion compensation accuracy and hybrid coding, 8 × 8 or larger block partition of content for normal video object, can further make use of space correlation and improve compression efficiency.
Research on Methods for Urban Rail Transit Train Operation Regulation
Authors: Cai Chao
Published: April 2014

Train operation regulation is the key technology to ensure the orderly operation of trains, its value has been fully realized under the background of rapid construction and high traffic density in urban rail transit. This paper did a deep analysis on different strategies and methods for urban rail transit train operation regulation and the applications of these strategies and methods in different conditions. Furthermore, an automatic train operation regulation mathematical model was established. Then developed a software system in Visual C++ and used it to analysis and test the model by data of a real metro line, the result showed that both the model and the system were available.
Quantitative Safety Assessment Based on Risk in Level-Crossing between Railway and Highway
Authors: Liu Xiao Hua , Han Mei , Lin Xiao Hui , Yang Neng Pu
Published: April 2014

In this paper, a portable integrated ship monitoring command system is designed to meet the needs of automatic maritime security working, remote monitoring and commanding ship, while adapting the harsh working environment. The propose ship monitoring command system has merits of ease of installation, highly-integrated features, easy-to-use, and so on. Application of Beidou Navigation Satellite System's high precision positioning and SMS(Short Messaging Service) communication technology in integrated ship monitoring command system can well solve the problem of ship navigation and positioning, remote monitoring and commanding. In our system, ECDIS( Electronic Chart Display and Information System) is chosen as the display platform, HF(High frequency), VHF(Very high frequency) and Beidou is chosen as the communicational measure, Beidou and GPS is chosen as the positioning measure. With the help of the above measures, the static and dynamic data of ship, real-time voice and text are transported to realize the function of ship positioning, ship navigation, remote monitoring and commanding.
Analysis of a Eco-Epidemiological Model with Disease in the Predator
Authors: Zhang Yong Po , Ma Ming Juan , Zuo Ping , Liang Xin
Published: April 2014

In this paper we formulated and analyzed a eco-epidemiological model with disease in the predator, analysis of the existing conditions of equilibrium point, the sufficient condition of the local asymptotical stability of the equilibrium was studied with the method of latent root, the global asymptotical stability of two of the boundary equilibriums and the local asymptotical stability of the positive equilibrium is proved by using the Lyapunov function.
Some New Impulsive Integral Inequalities
Authors: Sun Bao Ju
Published: April 2014

Some new impulsive integral inequalities related to certain integral inequalities are established, which extend the results proved by J. Li in [On some new impulsive integral inequalities, Journal of Inequalities and Applications, Vol. 200. The inequalities given here can be used as basic tools in the qualitative theory of certain impulsive differential and integral equations.
Modeling in Respiratory Movement Using LabVIEW and Simulink
Authors: Su Liang Yu
Published: April 2014

This paper present a typical respiratory movement method simulated by LabVIEW and Simulink.Because calling Matlab in LabVIEW can control hardware easily and realize complex algorithm concurrently,so we combine the capabilities of Simulink and Real-Time Workshop with LabVIEW,and use Simulation Interface Toolkit importing simulation models into LabVIEW.This paper provides a through introduction for respiratory modelling and control design,the combined method that can integrate the advantage of the two method is illustrated for control aim.
Study on Simulation Framework of Army Equipment System of Systems Based on High-Performance Parallel Computing
Authors: Hao Jia Xin , Zhao Zhi Qiang
Published: April 2014

The high-performance parallel computing (HPPC) has a better overall performance and higher productivity, for a generical large-scale army equipment system of systems (AESoS) simulation, and the runtime efficiency can be multiplied several tenfold to several hundredfold. The requirement analysis of simulation framework of AESoS based on HPPC was proposed. After the simulation framework of AESoS based on HPPC and its key techniques were discussed, the simulation framework of AESoS Based HPPC was designed. it is of great significance to offer certain references for the engineering application in the simulation fields of AESoS based on HPPC.
Study on Virtual Liver Surgery Simulation System with Real-Time Haptic Feedback
Authors: Fang Yan Hong , Wu Bin , Yang Zheng Yi
Published: April 2014

To improve the precision and real-time of the virtual liver surgery simulation system with haptic feedback, a novel deformation modelling based on wave equation and spherical harmonic is proposed. Continuous changed liver models were mapped into a common reference system in which corresponding coefficients of spherical harmonic were compared with method of principal components analysis and force feedback were calculated by simplified deformation wave equation. Moreover, system structure design, fast collision detection and real-time feedback operation are also discussed in detail. Experimental platform of virtual liver surgery was established based on vizard 4.0 and Sensable-phantom® desktopTM. Experiment results show that the system can provide a stable force to the human operator and which satisfy the requirement of real-time performance. Establishing a simple and lifelike physics deformation model and a precise and rapid collision detection algorithm favors the performance improvement of the virtual liver surgery simulation system.
Constructing Von Karman Random Media Model with Power Spectrum Method
Authors: Yang Ning , Qian Xu
Published: April 2014

In this paper, Von Karman random media is constructed with power spectrum method. The random media with Von Karman autocorrelation cannot be constructed in time domain but in frequency domain. So power spectrum method is utilized to solve the problem. The spectrum of random function is generated in frequency domain with random field and auto-correlation function. With inverse Fourier transformation, the Von Karman random media model is constructed. With different correlation lengths, six group of Von Karman random media are constructed.
Kinematics Performance Comparison of a Family of 3-RPS Parallel Mechanisms Affected by Limb Arrangement
Authors: Li Bin , Wang Shi Yu , Liu Lei , Zhao Xin Hua
Published: April 2014

The kinematics performance comparison of a family of 3-RPS parallel mechanisms affected by limb arrangement has been studied in this paper. Firstly, arrangement parameters of single RPS limb are identified. Based on these parameters, variant configurations of 3-RPS parallel mechanisms are enumerated. Then, the inverse kinematic problems of these different mechanisms are solved, and the kinematic performance comparison of these mechanisms is carried out. Simulation results illustrate that limb arrangement has a great influence upon kinematic performance for the 3-RPS parallel mechanisms.
One New Kind of Worming Pipe Robot
Authors: Xu Feng Ping , Zhou Yan , Zhao Zhi Cong
Published: April 2014

Aim at special requirements and limitations of new type carrying technique for special technology well logging, one new type worming pipe robot was put forward based on combination mechanism, it can be used in the new type carrying technique. The walking principle of the robot was given and walking kinematical model and driving torque model were set up in this paper. Further more the virtual prototype was made and kinematical simulation analysis had been accomplished. The numerical results validated the design theory and analysis conclusions of the robot were correct. The robot can have bigger tensile draw.
Robust Adaptive Observer for Single-Linked Robotic Arm Systems
Authors: Yang Qiang , Liu Yu Sheng
Published: April 2014

A robust adaptive observer was proposed for single-linked robotic arm systems, where all the parameters in the robotic arm motion equation are treated to be unknown. Under certain assumptions, the proposed observer ensures that the estimation error is uniformly bounded in the presence of unmodeled dynamics, unknown nonlinearities, bounded disturbances and unknown parameters. Furthermore, the estimation error can be made arbitrarily small by choosing appropriately design parameters. Simulation results illustrated the effectiveness of the proposed observer.
Space Trajectory On-Line Interpolation Technique of Six-DOF Robot
Authors: Ou Xi Yang , Hou Xing Zhe , Zheng Ke , Du Xiang , Ji Jing
Published: April 2014

This paper presents a real-time interpolation algorithm of the space trajectory which based on the theory of coordinate transform. The algorithm can solve the path planning problem of six-DOF robot. According to the actual movement state of robot, the algorithm can obtain some key points for the robot motion path by teaching. Then it can realize the dimensional random trajectory interpolation by coordinate transformation after building a suitable dimensional coordinate. Finally it can obtain the corresponding joint angle though the inverse kinematics solution. The experimental results show that this algorithm has a good rapidity and practicality, it suit for the six-DOF robot real-time trajectory interpolation, so it is worth promoting.
Study on Path Planning Method for Mobile Robot Based on Fruit Fly Optimization Algorithm
Authors: Jiang Tao , Wang Jian Zhong
Published: April 2014

A path planning method based on fruit fly optimization algorithm was proposed. An optimization algorithm by the foraging process of fruit fly was presented, and the mathematical model of fitness function was established. The algorithm steps employing the LabVIEW platform were achieved. The experiments of path planning were carried out. The experimental results show that the optimization algorithm can achieve the path planning and avoidance of mobile robot, and thus to verify the feasibility.
Study on the Coordinated Control Mechanism of Orchestic Robotic Vehicle Based on Educational Robot
Authors: Lu Gui Ping , Wang Qing Hui , Liu Shu Bo
Published: April 2014

Educational robot is a platform of new educational technology. Student could study new knowledge in execution, and discover new things in exploration. It can enhance the ability of analyzing and solving problems. Orchestic robotic vehicle is designed to give the arrangement and innovation in educational robot platform. With the sensor, dance movements of each vehicle can run according to the route and coordinated motion. There is a major hardware platform which is Arduino, with ATmega328 chip of AVR microcontroller. A QTI line sensor and SHARP-GP2D12 infrared distance sensor are used in the design. Xbee wireless communication module is based on ZigBee technology which is low power network protocol of EEE802.15.4 standard. By researching and comparing several methods of control, this paper analyzes characteristics of them and the advantage and potential of development of synthetic control are testified. Choreography and coordinated control is realized for the dancing wheeled mobile robot scheme.
The Analysis of PPP-δ Robot Workspace Based on Boundary Search Method
Authors: Zhang Jing , Shan Zhong De , Ren Yong Xin
Published: April 2014

There are two ways to solve workspace boundary, analytic geometry method and numerical method. In this paper, boundary search method is used to wok out the PPP-δ parallel robot workspace. And the relevant points coordinates and motion displacement of expression S1, S2, S3 is worked out. And the PPP-δ parallel robot graphical workspace is also obtained.
The Research of Application Mode of Unmanned Aircraft Patrol in UHV Transmission Lines
Authors: Li Yong , Ge Xin , Hou Xue Liang
Published: April 2014

In the UHV AC transmission lines will be rapid development momentum of main frame China grid, inspection of UHV transmission line for the realization of unmanned aircraft utility,this article makes an analysis for the structure characteristics and defects of the UHV transmission line , finds out the defect characteristics, and summarizes the characteristics of the UAV and inspection instrument. According to the characteristic of UHV defect, we display its properties of unmanned aerial vehicles and inspection instrument, construct the application mode of four kinds of unmanned aerial vehicle inspection, and have a description for each model.
First report ofCotesia vanessae(Hymenoptera: Braconidae) in North America
Authors: Hervet V.A.D. , Murillo H. , Fernández-Triana J.L. , Shaw M.R. , Laird R.A. , Floate K.D.
Published: April 2014

We report for the first time the occurrence of the well-known Eurasian and north African parasitoidCotesia vanessae(Reinhard) (Hymenoptera: Braconidae) in North America. Specimens were reared fromChrysodeixis chalcites(Esper) andTrichoplusia ni(Hübner) (Lepidoptera: Noctuidae) recovered from several locations in southwestern Ontario, Canada, and detected by DNA sequencing from oneAutographa californica(Speyer) (Lepidoptera: Noctuidae) in southern Alberta, Canada.
Momentum Conservative Schemes for Shallow Water Flows
Authors: Pudjaprasetya S. R. , Magdalena I.
Published: April 2014

We discuss the implementation of the finite volume method on a staggered grid to solve the full shallow water equations with a conservative approximation for the advection term. Stelling & Duinmeijer [15] noted that the advection approximation may be energy-head or momentum conservative, and if suitable which of these to implement depends upon the particular flow being considered. The momentum conservative scheme pursued here is shown to be suitable for 1D problems such as transcritical flow with a shock and dam break over a rectangular bed, and we also found that our simulation of dam break over a dry sloping bed is in good agreement with the exact solution. Further, the results obtained using the generalised momentum conservative approximation for 2D shallow water equations to simulate wave run up on a conical island are in good agreement with benchmark experimental data.
Use of the Quality Improvement (QI) Knowledge Application Tool in Assessing Pediatric Resident QI Education
Authors: Glissmeyer Eric W. , Ziniel Sonja I. , Moses James
Published: April 2014

Background

Assessing the effectiveness of quality improvement curricula is important to improving this area of resident education.

Objective

To assess the ability of the Quality Improvement Knowledge Application Tool (QIKAT) to differentiate between residents who were provided instruction in QI and those who were not, when scored by individuals not involved in designing the QIKAT, its scoring rubric, or QI curriculum instruction.

Methods

The QIKAT and a 9-item self-assessment of QI proficiency were administered to an intervention and a control group. The intervention was a longitudinal curriculum consisting of 8 hours of didactic QI training and 6 workshops providing just-in-time training for resident QI projects. Two uninvolved faculty scored the QIKAT.

Results

A total of 33 residents in the intervention group and 27 in the control group completed the baseline and postcurriculum QIKAT and self-assessment. QIKAT mean intervention group scores were significantly higher than mean control group scores postcurriculum (P < .001). Absolute QIKAT differences were small (of 15 points, intervention group improved from a mean score of 12.8 to 13.2). Interrater agreement as measured by kappa test was low (0.09). Baseline self-assessment showed no differences, and after instruction, the intervention group felt more proficient in QI knowledge than controls in 4 of 9 domains tested.

Conclusions

The QIKAT detected a statistically significant improvement postintervention, but the absolute differences were small. Self-reported gain in QI knowledge and proficiency agreed with the results of the QIKAT. However, QIKAT limitations include poor interrater agreement and a scoring rubric that lacks specificity. Programs considering using QIKAT to assess curricula should understand these limitations.
Fostering Reciprocity in Global Health Partnerships Through a Structured, Hands-On Experience for Visiting Postgraduate Medical Trainees
Authors: Umoren Rachel A. , Einterz Robert M. , Litzelman Debra K. , Pettigrew Ronald K. , Ayaya Samuel O. , Liechty Edward A.
Published: April 2014

Background

Global health programs that allow international experiences for US learners should also enable reciprocal learning experiences for international learners, particularly if that is a need identified by the partner institution.

Methods

A partnership between Indiana University and Moi University, Kenya, has successfully hosted 41 visiting Kenyan internal medicine and pediatrics registrars at Indiana University since 2006. The program's logistics, curriculum, and evaluation are described.

Results

The registrars rotated through nephrology, cardiology, hematology and oncology, infectious diseases, and intensive care, as well as related ambulatory experiences, functioning on a level comparable to fourth-year medical students. They showed significant improvement in pretest and posttest scores on a standardized National Board of Medical Examiners examination (P  =  .048). International learners experienced culture shock, yet they felt the Indiana University elective was helpful and would recommend it to future participants.

Conclusions

Global health programs can reciprocate the benefits derived for US students and residents by offering learning experiences to international learners if that is an expressed need from the international partner. Barriers to those experiences can be overcome, and the hands-on, elective experience has the potential to positively affect the knowledge and attitudes of participants as well as the home nation.
Aggregate Effects of Behavioral Anomalies: A New Research Area
Authors: Frey Bruno S. , Gallus Jana
Published: April 2014

Much recent research in economics focuses on exploring behavioral anomalies, i.e., systematic deviations from the assumptions of the rationally self-interested model of man. Laboratory studies are used to identify seeming inconsistencies with micro-economic theory on the level of individuals. Since economics is a social science, this article proposes that the next crucial step consists in shifting the focus to the macro-level. It examines the process through which behavioral anomalies are aggregated to a societal outcome. Since individuals are reactive when they interact with others and face institutional constraints, the aggregation process may lead to different outcomes than what has been observed in individual-level studies: the respective anomalies may disappear, or they may become stronger on the macro-level. The discussion demonstrates that there are a great number of aspects to be analyzed. The paper presents fragments of what could become a more extensive field of research.
Wind extraction potential from 4D-Var assimilation of stratospheric O3, N2O, and H2O using a global shallow water model
Authors: Allen D. R. , Hoppel K. W. , Kuhl D. D.
Published: April 2014

Abstract. The wind extraction due to assimilation of stratospheric trace gas (tracer) data is examined using a 4D-Var (four-dimensional variational) data assimilation system based on the shallow water equations coupled to the tracer continuity equation. The procedure is outlined as follows. First, a nature run is created, simulating middle stratospheric winter conditions. Second, ozone (O3), nitrous oxide (N2O), and water vapor (H2O) (treated in this study as passive tracers) are initialized using Aura Microwave Limb Sounder (MLS) mixing ratios at 850 K potential temperature and are advected by the nature run winds. Third, the initial dynamical conditions are perturbed by using a 6 h offset. Fourth, simulated hourly tracer observations on the full model grid are assimilated with a 4D-Var system in which tracer and winds are coupled via the adjoint of the tracer continuity equation. Multiple assimilation experiments are performed by varying the amount of random observation error added to the simulated measurements. Finally, the wind extraction potential (WEP) is calculated as the reduction of the vector wind root mean square error (RMSE) relative to the maximum possible reduction. For a single 6 h assimilation cycle with the smallest observation error, WEP values are ~60% for all three tracers, while 10-day multi-cycle simulations result in WEP of ~90%, wind errors of ~0.3 m s−1, and height errors of ~13 m. There is therefore sufficient information in the tracer fields to almost completely constrain the dynamics, even without direct assimilation of dynamical information. When realistic observation error is added (based on MLS precisions at 10 hPa), the WEP after 10 days is 90% for O3, 87% for N2O, and 72% for H2O. O3 and N2O provide more wind information than H2O due to stronger background gradients relative to the MLS precisions. The RMSE for wind reach a minimum level of ~0.3–0.9 m s−1 for the MLS precisions, suggesting a limit to which realistic tracers could constrain the winds, given complete global cover age. With higher observation noise levels, the WEP values decrease, but the impact on the winds is still positive up to noise levels of 100% (relative to the global mean value) when compared to the case of no data assimilation.