bluuebunny/crossref_metadata_2025 huggingface dataset:
Los mapas impresos durante la guerra civil española (II): cartografía del Cuartel General del Generalísimo
Authors: Nadal Francesc , Urteaga Luis , Muro José Ignacio
Published: May 2010

[es] Este artículo describe la organización y actividad de la Sección Cartográfica del Cuartel General del Generalísimo durante la guerra civil española, e identifica a los responsables de la misma. Entre los mapas compilados por la sección cartográfica destaca una edición especial del Mapa topográfico de España a escala 1:50.000, denominada «Mapa Nacional», que sirvió de base al conjunto de la cartografía del ejército franquista. Estudiamos las características del citado mapa, y la cartografía derivada del mismo.

[fr] Cet article décrit I'organization et les activités de la Sección Cartográfica del Cuartel General del Generalísimo pendant la guerre civile espagnole, et identifie les responsables de la même. De les cartes compilés par la section cartographique nous détachons l'édition spéciale de la Carte Topographique de l'Espagne à échelle 1:50.000, denominé «Mapa Nacional», lequel supporta l'ensemble de la cartographie de l'armée franquiste. Nous étudions les caractéristiques de cette carte et la cartographie derive de la même.
El gasto medioambiental en las Comunidades Autónomas y su relación con la Agenda Local 21: estudio mediante el empleo del análisis de correspondencias
Authors: Aguado Itziar , Echevarría Carmen
Published: May 2010

La Agenda Local 21 es un conjunto de políticas de Desarrollo Sostenible aplicadas en el ámbito local que está adquiriendo gran notoriedad dentro del territorio español en la última década. Comprende tres aspectos: sociales, económicos y ambientales, aunque, en la práctica, mayoritariamente, se viene identificando principalmente con las políticas ambientales, ya que son los propios Departamentos de Medio Ambiente quienes tienen competencias exclusivas sobre el tema. Por consiguiente, en la presente investigación pretendemos demostrar, mediante el uso de técnicas de análisis multivariante, más concretamente, del análisis de correspondencias simples, cómo se relacionan los distintos patrones de gasto medioambiental con el mayor o menor impulso que las Comunidades Autónomas están otorgando a la Agenda Local 21.
La caza mayor y le economía rural en la provincia de Toledo
Authors: Martín Fernández Ángel Julián , Ortuño Pérez Sigfredo Francisco
Published: May 2010

[es] ¿Ocio o negocio?, ¿es la caza una actividad verdaderamente rentable? Si es así, ¿quiénes son los mayores beneficiarios?, ¿cómo repercute en las zonas rurales más desfavorecidas? Estas son algunas de las cuestiones que la caza, como realidad económica y social, plantea, y cuyas respuestas se pretende abordar en este trabajo desarrollado en una zona de contrastada tradición cinegética como es la comarca de los Montes de Toledo en la provincia del mismo nombre, como lo demuestra el hecho de que la mayor parte de los cotos de caza mayor de la provincia de Toledo, se hallen en esta comarca. Los Montes de Toledo debido a sus excelentes recursos naturales para la caza y a la crisis de los aprovechamientos agrarios tradicionales, constituyen un espacio en el que la práctica de la caza mayor, es el uso más adecuado para contribuir a la conservación del equilibrio biológico, siempre que este aprovechamiento se realice racionalmente.

[fr] Loisir ou affaire? Est-ce que la chasse est une activité vraiment rentable? Le cas échéant, qui sont leur principaux bénéficiaires?, quelles sont leur conséquences dans les espaces ruraux les plus défavorisés? Ce sont quelques-unes des questions que la chasse pose en tant que réalité économique et sociale, et dont on essaie d'aborder leurs réponses dans ce travail, qu'a été développé dans une zone qui compte sur une longue tradition cynégétique, telle que les Montes de Toledo, dans la province de Toledo, d'après le fait que la plupart des chasse gardées se sont concentrées dans ce pays. Compte tenu de leur excellents ressources naturels pour la chasse, et de la crise des systèmes d'aménagement rural traditionnels, les Montes de Toledo sont l'un des espaces où la chasse de gros gibier c'est l'une des utilisations les plus convenables pour la conservation de l'équilibre biologique, si toutefois il s'agit d'une pratique rationnelle. Montes de Toledo.
Veinte años de migraciones españolas: 1982-2002. Cambio de signo e intensidad
Authors: Cebrián Juan Antonio , Bodega María Isabel
Published: May 2010

Coincidiendo con su entrada en el Mercado Común Europeo en 1986, España se ha convertido en un foco de atracción de inmigrantes laborales del Tercer Mundo. Por continentes, [Según datos del Ministerio del Interior (Anuario Estadístico de Extranjería, 2002), los 380.343 inmigrantes procedentes de América superan en la actualidad a los 366.518 inmigrantes africanos. Pero si dividimos, como es práctica habitual, el continente americano en dos grandes conjuntos: América del Norte (con 15.774 inmigrantes) e Iberoamérica (con 364.569), Africa continúa siendo la procedencia más frecuente de inmigrantes laborales en España.] el grupo más numeroso es el africano, marroquí en un 77%, que se emplea, fundamentalmente, en la agricultura intensiva, en la construcción y en los servicios. Muy numerosos también, y cada vez más, son los inmigrantes laborales procedentes de Latinoamérica y del Sudeste asiático. Desde la aprobación de la primera Ley de Extranjería en 1985, la legislación española ha experimentado continuas reformas, para la consecución de tres objetivos fundamentales: la mejora de los procedimientos administrativos, la de las condiciones laborales de los inmigrantes y la superación de los obstáculos a su integración social.
Alcalá de Henares medieval. Aspectos de su geografía urbana
Authors: Román Pastor Carmen
Published: May 2010

El artículo presenta la trayectoria urbana de esta antigua población, desde sus orígenes tardorromanos hasta la intervención cisneriana, destacando sobre todo la primitiva villa de San Justo y su expansión posterior, base y fundamento de la ciudad actual. Gracias a una mayor abundancia de testimonios, hemos podido realizar un estudio más extenso del siglo XV alcalaíno; habiendo documentado la toponimia de algunas de sus calles y analizado su trazado viario, en el que se ha resaltado su fragmentación en barrios como consecuencia del establecimiento de los diversos grupos que vivían en la villa, cristianos, mudéjares y judíos.
La competencia durante el planeamiento: aplicaciones al tren de cercanías
Authors: Moliní Fernando
Published: May 2010

[es] La competencia durante el planeamiento: aplicación al tren de cercanías y al metro. En este trabajo se ha desarrollado un modelo teórico sobre la Competencia durante el Planeamiento referido a las infraestructuras estructurantes, particularmente al tren de cercanías, y la idea se ha aplicado al caso del municipio de Moraleja de Enmedio (Madrid). La investigación indica que, al menos en algunos municipios, la propuesta es válida para simultanear, por un lado, una planificación urbana y una ordenación del territorio que podría ser racional, coherente y maximizadora de la recuperación de las plusvalías para la colectividad, con, por otro, la flexibilización del territorio, la liberalización del suelo y el incremento de la participación de la iniciativa privada.

[fr] La compétence pendant la planification: Application au tracé des trains régionaux. Dans ce travail on a développé un modèle théorique sur la compétence pendant la planification en rapport aux infrastructures structurantes, particulièrement au réseau de trains régionaux, et l'idée a été appliquée a la Commune de Moraleja de Enmedio (Madrid). La recherche indique que, au moins dans quelques communes, la proposition est valable pour faire en même temps une planification urbaine et un arrangement du territoire que pourrait être rationnel, cohérent et capable de réussir au maximum le recouvrement des plus-values pour la collectivité, et en outre obtenir une flexibilité du territoire, la libéralisation du terrain et l'augmentation de la participation de l'initiative privée
Los campos volcánicos basálticos monogénicos de la Isla de Tenerife (Canarias, España)
Authors: Dóniz Páez F. Javier
Published: May 2010

[es] Por primera vez se delimitan los diferentes campos volcánicos basálticos de la isla de Tenerife. Para su individualización se han tenido en cuenta criterios topográficos, geológicos, genéticos, estructurales y morfológicos. Se han identificado un total de cinco campos de volcanes (Teno, Pedro Gil, Bilma-Abeque, Teide y Valle San Lorenzo-Las Galletas) con número de conos, densidades y organizaciones espaciales de los mismos diferentes y en algunos casos contrastadas, que coinciden, a grandes rasgos, con cada una de las grandes morfoestructuras volcánicas complejas de la isla: los macizos volcánicos antiguos, las dorsales eruptivas y el complejo Teide-Cañadas.

[fr] Pour la première fois, les différents champs volcaniques basaltiques de l'île de Tenerife furent délimités. Afin de les individualiser, on utilisa des critères topographiques, géologiques, génétiques, structuraux et morphologiques. Un total de cinq champs de volcans furent identifiés (Teno, Pedro Gil, Bilma-Abeque, Teide et Valle San Lorenzo-Las Galletas), avec un nombre de cônes, de densités et d'organisations différents et parfois même contrastés, coïncidant dans leurs grandes lignes, avec chacunes des grandes morphostructures volcaniques complexes de l'île.
Concentración y asociación espacial del poblamiento: una aplicación a Cataluña en el siglo XX
Authors: Esteve Palós Albert
Published: May 2010

[es] Este artículo propone y discute la implementación de una estrategia de análisis para caracterizar el grado de concentración y asociación espacial del poblamiento, basada en un indicador de concentración diseñado al uso (IC) y en los estadísticos de asociación espacial Moran I y G¡*. Esta estrategia es aplicada al ámbito de Cataluña en el siglo XX a partir de los datos del Nomenclátor del Censo de Población. De los resultados obtenidos se derivan tres conclusiones principales: la idoneidad de IC como medida de concentración, la validez del Nomenclátor como fuente para el estudio territorial de la población y la contribución significativa de la estadística espacial para comprender mejor los datos geográficos.

[fr] Cet article propose et discute l'implémentation d'une stratégie pour analyser la concentration et l'association spatiale du peuplement, basée sur un indicateur de concentration (IC) conçu à ce propos et sur les statistiques d'association spatiale Moran I et G¡*. Cette stratégie est testée pour la région de la Catalogne pendant le XX siècle à partir des données du Nomenclátor du Recensement de la Population. Les résultats obtenus révèlent trois conclusions principales: la convenance de l'IC en tant qu'indicateur de concentration, la validité du Nomenclátor comme source pour l'étude territoriale de la population et la significative contribution de la statistique spatiale à la meilleure compréhension des données géographiques.
El problema de la vivienda en la aglomeración urbana madrileña: situación y posibles alternativas
Authors: Santos Preciado José Miguel
Published: May 2010

La política de liberalización inmobiliaria del gobierno madrileño actual está consiguiendo efectos contrarios a los objetivos que, inicialmente, se propuso: la solución del problema de la vivienda. La rigidez del mercado del suelo y la fuerte demanda de vivienda para inversión, en un momento de bonanza económica, han incrementado los precios, agravando el tradicional desencuentro existente entre la oferta y los sectores de la demanda no solvente, principalmente los jóvenes y la población inmigrante extranjera. A estos problemas, más coyunturales, habría que añadir los que proceden del modelo territorial que enmarca la producción residencial. La conformación del modelo metropolitano madrileño, desde los años sesenta del pasado siglo, ha generado graves problemas estructurales, que condicionan el desarrollo urbano del momento presente, a la vez que plantean el reto de la búsqueda de un modelo alternativo.
Agricultura y competitividad territorial en Andalucía
Authors: Silva Pérez Rocío
Published: May 2010

[es] Bajo el telón de fondo de la mundialización de la economía y la creciente apertura del comercio internacional de productos agrarios, este artículo plantea un nuevo marco de relaciones entre competitividad y agricultura y lo aplica a una comunidad autónoma española -Andalucía- cuya disparidad territorial ofrece una pluralidad de escenarios para profundizar en las diferentes situaciones de oportunidad asociadas a las dinámicas en ciernes. A tal fin, se presentan algunas claves para entender las nuevas relaciones entre agricultura y competitividad, se analiza la situación general del sector en Andalucía, se indaga en la situación diferencial de sus agriculturas con relación a las modalidades de competitividad que en cada caso se activen y se concluye con la presentación de diversos tipos de respuestas a la competencia suscitada por la creciente apertura comercial agraria.

[fr] Mondialisation de l'économie et l'ouverture croissante du commerce international de produits agraires, cet article pose un nouveau cadre de relations entre compétitivité et agriculture, en l'appliquant à une Communauté Autonome espagnole -l'Andalousie- dont la disparité territoriale interne met à notre disposition une grande diversité de scenarii pour approfondir la connaissance des différentes situations d'opportunité associées aux dynamiques naissantes. À ces fins, on présente ici quelques clés pour comprendre les nouvelles relations entre agriculture et compétitivité, la situation générale du secteur en Andalousie est analysée, tout comme celle de ses différentes agricultures selon la modalité de compétitivité adoptée ; on conclut enfin en montrant les différents types de réponses aux enjeux imposés par la concurrence issue de l'ouverture commerciale agraire croissante.
The Structure Research of Micromachined Airflow Omnibearing Level Posture Sensor
Authors: Piao Lin Hua , Li Yan Jie , Li Bai Hua , Ji Ming Ming , Zhang Xue Yan
Published: May 2010

The paper firstly introduced the sensitive mechanism of micromachined airflow omnibearing level posture, and compare several sense organ’s structure schematic design, and the best structure design is proposed. At last, it is testified that the design of micromachined airflow omnibearing level postrue sensor achieved the following performances: resolution<0.1°,the scope of azimuth is 360°,the scope of tile angle is 20°. The sensor is not only in small size but also in simply crafting. It is good in sensitive organ’s output consistency, and suitable for mass production.
An Experimental Study of Hard Dry Milling Based on Multi-Sensor Process Monitoring and Analysis
Authors: Liu Li Bing , Wang Xi , Zhong Wei Wu , Yu Hui , Liao Dong Ting , Wu Fei
Published: May 2010

This paper aims to collect the acoustic emission (AE), the vibration and the temperature signals produced in the hard dry milling of the die steel by using a signal collecting system based on multi-sensor and virtual instrument. Then the signals are processed by the wavelet transform and the wavelet packet transform. So we could pick up some regular pattern which could reflect the characteristic of the machining process from the results. The cutting parameters are set with single factor method and the experiment primarily focuses on researching the effect of changing the cutting parameters on the three signals mentioned forward. Through the experiment, some conclusions could be drawn as follow. In the process of the die steel’s hard dry milling, the spindle speed has a great effect on the AE signals. The temperature is mainly involved with the spindle speed and the depth of cut. The vibration signals have any clear pattern when the cutting parameter changes, but the energy of the vibration signals concentrate mostly on the first frequency band. Furthermore, the process of the hard milling is more stable.
Composite Tangent-Exponent Model for Skeleton Stress-Strain Curve of Soft Soil under Dynamic Loading
Authors: Wang Wei , Ling Hua , Xu Shun De , Wang Xiao Ni
Published: May 2010

Mathematical model for skeleton stress-strain curve under dynamic loading (SSSC) is one important issue to study the dynamic behavior of soft soil. Based on mechanism of developing process, primary mathematical behavior that SSSC model should meet is analyzed. Mathematical investigation on two conventional SSSC models, namely hyperbolic model and exponential model, is conducted. Dynamic stress index is proposed and employed to signalize the shortcomings of two conventional models. A composite tangent-exponent model for SSSC with three parameters is established, which is a monotone increasing and up limited function. The new model can overcome conventional shortcomings. Finally, good agreement between investigated and new model fitted data has been found out.
The Risk Analysis of Reverse Logistics Outsourcing Based the Fuzzy Comprehensive Analysis Method
Authors: Meng Xiang Ru
Published: May 2010

Since the 20th century, the environment’s getting worse and has been given more attention to. Many countries have given the laws to protect the environment.In the meantime, the perfect third part reverse logistics can provide the logistics service of all the owner of goods needs, with its profession serving and helping enterprise to enhance labor productivity, reduce cost, develop core competencies. On the other hand, using the third part reverse logistics enterprise is helping a enterprise exaltation the performance also bringing many new risk problems. This paper use the fuzzy comprehensive analysis method to judge the outsourcing risks of reverse logistics. And set forth to builds up a risk factor gathers, adopt the power value factor judgment method to made sure weighting of the evaluation index sign, build up comment gathers, construct and a adjudicated matrix in an experts investigating method, then get fuzzy result of outsourcing risks of reverse logistics by calculating.
Design Method of Reducer Oriented Maintenance
Authors: Ding Wan Jing
Published: May 2010

Maintenance is an important part of the product lifecycle management. As important equipment widely used in machine industry, disassembly and maintenance of reducer is crucial. In this paper, according to position and assembly relationship of all parts of reducer in 3D and the basic principles of disassembly, a disassembly relationship matrix was defined. The matrix can well express the disassemblity of the every part in model. Then, a generation algorithm of disassembly sequence was proposed based on and operations. Finally disassembly sequence of reducer was generated in VB.
Time-Jerk Synthetic Optimal Trajectory Planning of Robot Using Strength Pareto Evolutionary Algorithm
Authors: Yan Jie , Gong Dao Xiong
Published: May 2010

The Strength Pareto Evolutionary Algorithm (SPEA) is adopted to find time-jerk synthetic optimal trajectory of a hexapod robot in the joint space. In order to get the optimal trajectory, cubic splines are employed and derived under the constraint condition of via points to assure overall continuity of velocity and acceleration. Taken both the execution time and minimax approach of jerk as objectives, and expressed the kinematics constraints as upper bounds on the absolute values of velocity and acceleration, the mathematic model of time-jerk synthetic optimal trajectory planning is built. Finally, SPEA is adopted to optimize the stair-climbing trajectory of a hexapod robot, the simulation results show that this method can solve the trajectory planning problem effectively, and the stair-climbing trajectory can meet the contradictory objective functions of high speed and low robot vibration well.
Trend-Based Time Series Prediction Algorithm
Authors: Qi Xin , Liang Hong , Li Zhen
Published: May 2010

According to the resources performance and status information provided by grid monitoring system, this paper adopts a trend-based time series prediction algorithm to predict short-term performance of the resources. Experiments show that the improved mixed trend-based prediction algorithm tracks the trend of data changes by giving more weight, simultaneously takes the different situations of data increases and decreases into account, so the improved algorithm is superior to the pre-improved and it improves the accuracy of the prediction effectively.
An Improvement of LEACH Protocol Based on Motes’ Location Information
Authors: Jiang Yu , Liang Yan Chun , He Li Li , Cao Ying Hui , Hu Cheng Quan
Published: May 2010

Network’s life cycle and the energy expending rates of mote are important performance criterions for wireless sensor networks (WSN). An improved routing protocol based on LEACH was proposed in this paper to prolong the network’s life cycle. The improved routing protocol took the circumstance into consideration, that is every mote knows the location information of its own and that of the base station. We analyzed that how to use these location information to extend the mote’s life cycle. And then the extension of the entire network life cycle was achieved. Simulation on the NS2-environment was conducted. And the experimental results show that the whole network’s life cycle was extended greatly.
Research on Rotor Position Detection Technology for High Speed PMSM
Authors: Cui Hong , Wang Feng Xiang , Liang Zhong Hua
Published: May 2010

The method of rotor position detection and its signal processing circuit for high speed permanent magnet synchronous motor (PMSM) are proposed in this paper. The optoelectronic position sensor and appropriate processing way are adopted to obtain position information accurately and rapidly. The experimental result shows that the method can accurately detect the rotor position for a PMSM with rated speed of 60000 r/min. The method is also applied on high speed PMSM direct torque control (DTC) system by simulation in this research. It is shown that the proposed method can be used for high speed PMSM which has provided theoretical basis for closed-loop control.
Study on Peanut Leaves’ Delayed Luminescence Characteristic under Excitation of Alternating Electric Field
Authors: Liu Hui Lan
Published: May 2010

In this paper, peanut leaves’ delayed luminescence characteristic under excitation of alternating electric field was studied. The decay law of Delayed Luminescence Intensity with time and the change of Initial Light Intensity and Attenuation parameters with the frequency, peak voltage and excitation time of alternating electric field were observed. It was found that: Under the three kinds of excitation, the leaves’ Delayed Luminescence all presented the hyperbolic decay law with the time. In the frequency ranging from 4000HZ to 30000HZ，the Initial Light Intensity showed a trend of first increasing and then decreasing, but attenuation parameters showed a trend of first increasing then decreasing, increasing again and reducing again. In the excitation time ranging from 5min to 30min, the Initial Light Intensity and attenuation parameters all showed a trend of first increasing and then decreasing with the frequency increasing; In the peak voltage ranging from 500v to 10000v, the Initial Light Intensity showed a trend of first decreasing and then increasing with the peak voltage increasing, but attenuation parameters showed a trend of first increasing and then decreasing. The reason is mainly due to that the frequency, the peak voltage and excitation time of alternating electric field have an effect on the electrons transition in non-bonding oxygen atom which locates on chlorophyll’s carbonyl.
The Construction of Tumor Cell Apoptosis Signal Transduction Network and the Analysis of its Regulation Mechanism
Authors: Liu Hui Lan
Published: May 2010

The induction and regulation network of tumor cell apoptosis is built by integrating several seperated pathway of signal transduction and analyzing the properties and process. Three local area regulation centers such as caspase family, Bcl-2 family and Cyt C protein are found and the mechanisms of signal induction and regulation of every center are discussed.
Research on Compression Methods for ASCII STL File
Authors: Ji Shi Jun
Published: May 2010

Two new types of ASCII format STL file are presented under lossless data compression and lossy implicit data compression respectively. In these new format file, a vertex with three coordinates which has degree n is stored only once rather than n times and three vertexes of a facet are saved by their indexes instead of by their three coordinates (x, y, z). As a result, the storage space of the vertex reduces to about 1/3 of its original space. It is very convenience for the file transmitting of network manufacturing. Moreover, the reading, writing and pretreatment time of data file are shortened greatly because of the decreasing of the file length.
Optimization of ARQ Mechanism in Wireless Relay Network
Authors: Wu Li Fen , Zhu Guang Xi , Wu Wei Min
Published: May 2010

In this paper we do some researches on the ARQ mechanism which provides the probability of involving the relay nodes into the UWB multi-hop network. The ARQ mechanism we designed combines PWMR ARQ and Relay ARQ, which can perform on both the end nodes and relay nodes. Then we make a theoretical analysis of the indoor UWB channel model and give a Finite-state Markov linker layer model. With the simulation results, we can get the conclusion that using ARQ mechanism designed in this paper significant enhances throughput, time delay and bandwidth utilization of the UWB multi-hop network.
The Concave Contour Detection Based on GVFsnake
Authors: Cao Jie , Liu Xiao Jun , Liu Zong Li
Published: May 2010

Active contour model is an important research field in computer vision and many researchers studied the variational method in recent years. The traditional snake model is unable to converge to the concave area and it has a lower convergence. By improving the external energy, researchers introduced a gradient vector flow active contour model (GVFsnake). Several standard images are used to segmenting experiments, and the results show that GVF has obvious advantages compared with traditional snake model in the iteration number of force field. Experiments show that the method is faster and better to converge in the concave area. The edge information can be kept well and diffused more quickly.
A Secure Networking Architecture for the Internet of Things
Authors: Wu Shao Xing , Ma Yu Jun , Xiang Yan Tie
Published: May 2010

This article describes innovative and highly secure network architecture, dedicated to internet of things. We recommend that the infrastructure, there is a new label project, to support the upcoming launch of the standard Host Identity Protocol (HIP). Our main concern is to ensure the privacy of RFID tags, while enabling things to things communications.
An Adaptive Load Balancing Algorithm Based on Discrete Uniform Distribution
Authors: Li Hai Sheng , Shi Hong Yan
Published: May 2010

Centralized cluster system is widely used by many web sites to increase service availability and balancing workload among multiple servers. In order to reduce the possibility which balancer becomes performance bottleneck in clusters, a dynamic adaptive weighted load-balanced algorithm is presented in this paper. The objective of the algorithm is that every working server sends a corresponding ask signals at different rates to balancer based on the discrete uniform distribution principle and the balancer assigning user requests according to an ask queue which consists of these signals and achieves the dynamic negative feedback on workload. Experiment results show that the algorithm is better than the static algorithm, as compared with the dynamic algorithm, it can also reduce the burden on load balancer.
Research on Load Balancing Mechanism Based on Software Aging Rejuvenation Strategy
Authors: Ju Ying , Guo Jun , Li Wei Yue , Wang Yun Sheng , Zhang Bin
Published: May 2010

Traditional load balancing strategy is based on the assumption that each node is valid ,in practice, with the growth of usage time, the failure rate of nodes will gradually increase, so we introduce software aging rejuvenation strategy into load balancing. We propose an algorithm to solve this problem. It is different from other algorithm that the function of collecting load information from real servers is moved to back-end in this algorithm, load balancer assigns tasks according to the calculation results, it could reduce the load of load balancer own. At the same time, in order to prevent unexpected event due to computer itself (e.g. cpu utilization rate sudden change), we also take into account decay factor. From the experiment result we can see that compared with non software aging rejuvenation strategy in load balancing, this strategy could balance the load of all the nodes more effectively.
Vision-Based Trajectory Generation for a Two-Link Robotic Arm Using Quadtree Decomposition and Curve Smoothing
Authors: Shojaeipour Shahed , Haris Sallehuddin Mohamed , Eftekhari Ehsan , Shojaeipour Ali , Daghigh Ronak
Published: May 2010

In this article, the development of an autonomous robot trajectory generation system based on a single eye-in-hand webcam, where the workspace map is not known a priori, is described. The system makes use of image processing methods to identify locations of obstacles within the workspace and the Quadtree Decomposition algorithm to generate collision free paths. The shortest path is then automatically chosen as the path to be traversed by the robot end-effector. The method was implemented using MATLAB running on a PC and tested on a two-link SCARA robotic arm. The tests were successful and indicate that the method could be feasibly implemented on many practical applications.
Development of a Computerized Dynamic Assessment System on Number Sense
Authors: Lin Su Wei , Hung Pi Hsia
Published: May 2010

The purpose of this study was to develop a computerized and interactive number sense dynamic assessment system (CNSDA) on number sense to investigate the characteristics of elementary students’ performance. Number sense is the ability of awareness and reasoning for the relationships among the numbers embedded in the authentic context or situation. Around 150 fifth grade students were sampled. The results show that the adaptive hint system of CNSDA could promote the students’ number sense effectively. The correlation coefficients between CNSDA posttest and the Mathematic Computerized Adaptive Ability Test (MCAT) and the Computerized Estimation Test (CET) are higher than the static pretest. For the students with weaker number sense, CNSDA is a helpful learning and assessing resource.
A Mobile Data Minging Algorithm Based on Discrete Fourier Transform by Genetic Algorithm
Authors: Wei Shu Ang , Gao Li , Sun Zhi Ye , Zheng Shi Jue
Published: May 2010

In the mobile environment, considering resource constraint, the frequent disconnect, synchronous data flow, the cost of communication, mobility and so on, combined with discrete Fourier transform (Discrete Fourier Transform, DFT) algorithm to facilitate time-domain and frequency domain conversion advantages as well as the genetic algorithm’s (Genetic Algorithm, GA) good global search capability ,this paper proposes a mobile data mining model which is based on the combination of Discrete Fourier Transform and Genetic Algorithm (DFTGA).
Research on Late Join in Collaborative Pattern Design
Authors: Wang Guo Zheng , Jiang Bo
Published: May 2010

This paper presents the introduction of late join problem in collaborative pattern design systems under the ubiquitous environment, describes the performance requirements that the algorithm should meet, and proposes an efficient multiple servers algorithm which can prevent the problem brought by single server algorithm. By using this algorithm, the problem of late join brought in collaborative design in the distributed environment is well solved.
Generalized Elliptic Curve Digital Signature Chain Based Authentication and Key Agreement Scheme
Authors: Zhang Li Hua , Zhang Li Ping , Bai Er Fei
Published: May 2010

Recently, several one time password authentication schemes have been proposed. However, most one-time password authentication schemes have security flaws. In this paper, a novel one-time password authentication and key agreement scheme (EAKAS) based on elliptic curve digital signature chain is developed. The proposed scheme has the following merits password or verification table is not required in the server; users can choose or change password; it can resist off-line dictionary attacks and achieves mutual authentication; it has no system clock synchronization and no constraint of transmission delay; it can resist replay attacks, man-in-the-middle attack and insider attack; it is sensitive to password error and strong in security restoration; the session keys in proposed scheme have the feature of freshness, confidentiality, known key security and forward security. Compared with the related schemes, our proposed scheme has better security and well suited to scenarios requiring a high level security.
Energy Efficient Passive Clustering Based Directed Diffusion Protocol
Authors: Zhang Li Hua , Zhang Li Ping , Huang Ren Hang
Published: May 2010

In directed diffusion (DD), the diffusion of interest and exploratory data leads to heavy energy consumption. In this paper, we propose an improved directed diffusion routing protocol on the basis of Passive Clustering Directed Diffusion (PCDD). This protocol has many merits:1).In order to avoid the unbalance energy consumption, this protocol adopts cluster declaration mechanism based on energy threshold value and gateway selection mechanism based on residual energy.2).In order to reduce the energy consumption of the network topology reconfiguration， this protocol uses the cluster head or gateway re-election algorithm in network topology maintenance mechanism. Compared with the related works through simulation, the proposed protocol can improve the energy efficiency of the network. Besides, the protocol obtains a better performance of end to end delay. Moreover, it has higher average packet delivery ratio.
China's Small Hydropower CDM Projects Development on Low-Carbon Economy Era
Authors: Ming Li
Published: May 2010

Clean Development Mechanism (CDM) is an international cooperation mechanisms based on the "Kyoto Protocol". Through CDM, developed and developing countries can reach a win-win in achieving sustainable development and reduce greenhouse gas emissions. There is no doubt low-carbon economy has brought new opportunities for CDM projects. Through CDM theory, this paper studied on the feasibility of small hydropower CDM projects, the benefits of small hydropower CDM projects, as well as development procedures of small hydropower CDM project.
A Scientific Strategy Research of the Coordinated Development between Intrinsic Safety and Clean Production Technologies under the Green Chemistry Framework
Authors: Chen Si Ning , Duo Yin Quan , Wei Li Jun
Published: May 2010

It has been over ten years for the green chemistry and clean production became a popular research subject in China. The researchers have made astounding achievements in several sectors such as controlling pollution from the source, alleviating the influence of the chemical processes to the environment, contributing an important part to the development of modern chemical industry in China. The general scientific strategy research on intrinsic safety and clean production under the green chemistry framework is a must for China to develop a healthy chemical industry and to protect its environment. Through this research, we aim at establishing an effective and feasible scientific strategy for the coordinated development of clean production and intrinsic safety technology, extending beyond single research subject to get ideas and technology support from multiple academic sectors. Regarding the national science development strategy, we have put forward the coordinated development of intrinsic safety and clean production in combination with their common characteristics.
Rate Distortion Model Analysis for H.264/AVC Video Coding
Authors: Tian Ling , Zhou Yi Min , Sun Yu , Sun Shi Xin
Published: May 2010

The Rate-Distortion model, which denotes relations among distortion, bit rate and quantization parameter for a video sequence, is a crucial issue in rate control. The quadratic R-D model has been widely used in H.264/AVC rate control because of its high performance. Since the adoption of Rate Distortion Optimization in H.264/AVC, the rate control algorithm is more complex than that of previous standards. In this paper, we firstly analyze the model error of the quadratic model, and then calculate the prediction error of MAD in H.264/AVC based on theoretical derivation and extensive experiments, finally propose a linear MAD model to predict the current MAD. Experimental results demonstrate that the proposed linear model gains higher prediction accuracy than the quadratic model.
Research on Web-Oriented Detection and Early-Warning of Evolutional Public Emergencies
Authors: Zhao Jie , Jin Pei Quan
Published: May 2010

Public emergencies about hygiene and society safety have been the major subjects in current public crisis management. Most of those emergencies exhibit a spatiotemporally evolutional feature. At the same time, Web has been the main source to publish and distribute information about such evolutional emergencies. Therefore, it has been a hot topic in public crisis management and emergency decision to automatically detect evolutional emergencies from the Web and provide early-warning in their early stages. This paper presents the definition of evolutional emergency, which is based on a spatiotemporal viewpoint. We analyze the state-of-the-arts of current research on the detection and early-warning of evolutional public emergencies, and explore the modeling issue of evolutional public emergencies. Then, a research framework for the detection and early-warning of evolutional public emergencies in the Web environment is proposed, which is expected to provide some new prospective for the study on public crisis management and emergency decision in the Web and information era.
A New Method on Laboratory Evaluation of the Effectiveness of Consolidant Treatments for the Conservation of Historic Stone Buildings and Sculptures
Authors: Liu Qiang , Zhang Bing Jian
Published: May 2010

Historic stone materials have to deal with weathering. The desire to preserve cultural heritage created a wide variety of products to reduce the rate of stone decay and to strengthen decayed stone, but it is difficult to evaluate their protective efficiencies. In this paper, a simple preparation method of an imitation of weathering stone is reported. The imitation was prepared with calcium carbonate particles mixed with water. Then, using imitations as the consolidated objects, the consolidation efficiency of a novel biomimetic protectant was investigated. The experimental results indicate that the evaluation method is simple and feasible, and the selected protectant does perform a favorable function of consolidant. The characterization method is helpful in numerically giving some direct indications of the consolidation effectiveness.
Medical Image Retrieval Based on Semi-Supervised Learning
Authors: Liu Hui , Zhang Cai Ming , Han Hua
Published: May 2010

Among various content-based image retrieval (CBIR) methods based on active learning, support vector machine(SVM) active learning is popular for its application to relevance feedback in CBIR. However, the regular SVM active learning has two main drawbacks when used for relevance feedback. Furthermore, it’s difficult to collect vast amounts of labeled data and easy for unlabeled data to image examples. Therefore, it is necessary to define conditions to utilize the unlabeled examples enough. This paper presented a method of medical images retrieval about semi-supervised learning based on SVM for relevance feedback in CBIR. This paper also introduced an algorithm about defining two learners, both learners are re-trained after every relevance feedback round, and then each of them gives every image in a rank. Experiments show that using semi-supervised learning idea in CBIR is beneficial, and the proposed method achieves better performance than some existing methods.
Study on Dynamic Load Balance Method Based on Genetic Algorithm and RBF Neural Network
Authors: Zeng Qing Wei , Xu Zhi Hai , Deng Geng Sheng
Published: May 2010

Dynamic load balance is the critical pivotal role of network parallel and distributed computing. In order to solve the drawbacks of BP neural network, RBF neural network(RBFNN) is applied to dynamic load balance of network. And genetic algorithm is introduced and tried in optimizing the parameters of RBF neural network, the method is well suited for searching global optimal values. In the paper, genetic algorithm and RBF neural network (GA-RBFNN) is adopted to dynamic load balance of network. The cases are applied to study the ability of dynamic load balance. The experimental results indicate that GA- RBF neural network is better dynamic load balance method than BP neural network.
Nondestructive Identification of Cherry-Tomato Varieties Based on Multi-Spectral Image Technology
Authors: Yang Kai Sheng , Nie Peng Cheng , Feng Lei , He Yong , Chen Shuang Shuang
Published: May 2010

Yunnan cherry-tomato and Xinjiang cherry-tomato were very similar in appearance. But they are different in taste and nutritive value. A nondestructive identification method of cherry-tomato variety based on multi-spectral image technology is proposed in this paper. Fifty Yunnan cherry-tomatoes and fifty Xinjiang cherry-tomatoes were selected, and photos were taken by Duncan MS3100 3CCD multi-spectral imager. Threshold based segmentation and mathematical morphology method were used to process the images. Nine characteristic variables were calculated to establish discriminant analysis model (DA) and least square-support vector machine model (LS-SVM). The prediction accuracy of discriminant analysis model was 72.5% and that of LS-SVM model was 80%. The results showed that LS-SVM model could identify Yunnan cherry-tomato and Xinjiang cherry-tomato well.
A Real Time Tracking Algorithm Basing on Mixed Difference Algorithm
Authors: Wang Ai Xia , Wu Peng , Li Jing Jiao , Yan Ai Yun
Published: May 2010

This paper presented a high real time target tracking algorithm – mixed difference tracking algorithm MDT. In the proposed algorithm, frame difference and background difference algorithms are combined to get the location of the target. With background difference algorithm the shape of the target can be extracted. Due to the affection of the dynamic background, single background difference algorithm can not get the location of the moving target. To solve this issue the frame difference algorithm is used to estimate the location, and then combine the results of the background difference algorithm and the frame difference algorithm the location and the size of the target can be extracted. And then filtering algorithm is used to remove noise and isolated points. In the experiment it can be seen that the proposed algorithm can tracking object precisely in real time.
Anti-Risk Capability Evaluation Analysis on China Instrument and Meter Industry
Authors: Li Chao
Published: May 2010

Development trend of China instrument and meter industry looks good when the financial crisis is an ongoing crisis triggered by a dramatic rise in mortgage delinquencies and foreclosures in the world now. Anti-Risk capability has very important influence over the competitiveness in the long-term development vice versa. And instrument and meter enterprises in China must enhance their competitiveness force to increase market share. This paper constructs competitiveness evaluation index system of the listed companies in instrument and meter including six factors: Index Per Share, Profitability, Cash Flow, Capital Structure, Operation Ability, Development Ability, and adopts evaluation method by entropy method to make an empirical analysis on the competitiveness with the 16 Chinese listed companies in instrument and meter.
A Novel Network Service Mode of Geospatial Information and its Prototype System
Authors: Du Gen Yuan , Miao Fang , Guo Xi Rong
Published: May 2010

This paper proposes a novel digital earth platform framework, which is a application, service and decision-making support systems of geospatial data acquisition, storage, transmission, conversion, processing, analysis, retrieval, expression and output as a unified body, the core of which is to deal with geospatial data for spatial geographic information network service Geo-Browser/Geospatial Information Server (G/S) mode and Hyper Geographic Markup Language (HGML). Depth understanding and analysis of platform architecture, this paper realizes of digital earth platform prototype – U-Star based on the geospatial information network service G/S mode, the platform has the merits of C/S mode that full use of client resources, efficient to deal with the client data, as well as the advantages of B/S mode that the unified client and convenient to access network. This platform is a new server which can cope with massive geospatial information and a solution which can provide efficient service. It has already been applied into many fields, such as the digital tourism service system, the time sequence analysis of Wenchuan Earthquake, the real-time video monitoring based on the digital earth platform and the intelligent processing and exhibition of remote sensing data. The result indicates that the perfection of space, time and complexion of the geospatial information network accessing will effectively improve the quality and efficiency of the shared data, which has very important theoretical significance and bright prospect of application.
The Economical Life of Titanium Alloy Fasten Holes Structure
Authors: Zhang You Hong , Yang Bo
Published: May 2010

This paper outlined the experimental and theoretical study on the TC4 alloy fasten holes structure to assess the first inspection and maintenance period for structures. The initial fatigue quality of the fastener holes was represented by an equivalent initial flaw size distribution. Based on the experimental results of crack size, the life of fasten structure detail in which 5% crack happened was provided and the resulted life was suggested as the structure economical life. The predicated economical life of titanium alloy fasten hole structure are helpful to the economical repair of the airframe structure.
Research on Distance Opening Experiment Teaching Platform
Authors: Jie E Ming , Shu Zhou Jin
Published: May 2010

The application of technologies of virtual reality, network and sensors makes the construction of Distance Opening Experiment Teaching Platform (DOETP) become reality, which fully utilizes the experimental resources of institutions, institutes and enterprises. Based on the analysis on characteristics of virtual experiment and distance control experiment, the paper designed the basic infracture of DOETP. The logical structure of distance education platform was brought out, which integrates DOETP and Distance Opening Teaching Management Platform (DOTMP). The detail funcions design of distance education platform were also provided, which is of significance for the realization of the education platform.
A Simple Criterion for the Stability of Linear System with Constant Coefficients
Authors: Zou Li Min , Jiang You Yi
Published: May 2010

The purpose of this paper is to discuss the stability of linear system with constant coefficients. A simple practical criterion for the stability of linear system with constant coefficients is obtained.