bluuebunny/crossref_metadata_2025 huggingface dataset:
Public Safety in Federal Systems: A Primer
Authors: Leuprecht Christian
Published: September 2012

Résumé Quatre conditions de base doivent être respectées pour le fonctionnement efficace d’une société : la sécurité, la bonne gouvernance, le développement économique et les conditions psycho-sociales. Une bonne partie de la littérature porte sur les trois derniers aspects. Pourtant, la sécurité semble être une condition préalable, un élément premier, sans laquelle il semble difficile pour les trois autres à prendre racine. Alors que les préoccupations de sécurité sont la raison d’être au cœur de nombreux arrangements fédéraux, le lien du fédéralisme et de la sécurité publique a reçu peu d’attention de la part des chercheurs. À la lumière de la croissance exponentielle des systèmes fédéraux et de l’intérêt retrouvée dans la sécurité publique dans les systèmes fédéraux en raison de préoccupations au sujet du terrorisme d’une part, et de la capacité des fédérations de faire suite aux urgences naturelles et anthropogéniques d’autre part, cet article propose un cadre préliminaire de théorie et de substance afin d’informer et d’inciter l’étude comparative de la sécurité publique dans les systèmes fédéraux et multi-palier.
Évaluer les programmes de prévention de la dépendance des personnes âgées
Authors: Andrieu Sandrine
Published: September 2012

Dans le domaine de la prévention de la dépendance, de nombreux facteurs potentiellement protecteurs ont été identifiés dans la littérature à partir, en particulier, d’études épidémiologiques de type cohortes. Si les résultats de ces études d’observation sont relativement concordants, les résultats des essais d’intervention qui ont tenté de démontrer l’effet protecteur de certains de ces facteurs restent décevants. Des problèmes méthodologiques pourraient être à l’origine de ces résultats négatifs et, en particulier, nous pouvons faire l’hypothèse que les personnes âgées qui acceptent de participer à ces études d’intervention diffèrent de celles qui refusent de participer et seraient de ce fait les moins susceptibles de pouvoir bénéficier de tels programmes.
L'approche écologique en action en France et au Québec
Authors: Barthélémy Lucette
Published: September 2012

L’approche écologique impulse des interventions sur un continuum allant de celle dispensée dans un microenvironnement (ex. : domicile) jusqu’à celles offertes dans des contextes plus larges (communautés territoriales, pays). Les stratégies centrées sur le changement de comportement de l’individu sont nombreuses (ex. : séances d’éducation plurithématiques ou spécifiques). En complément, quatre stratégies socio-environnementales peuvent se conjuguer à chaque niveau d’intervention (environnement interpersonnel, organisations, communautés, environnement politique). L’approche globale et positive de la santé, crée un contexte propice à des actions nouvelles pour promouvoir la santé et la qualité de vie des populations vieillissantes.
Prévention des risques et adaptation du domicile des personnes âgées
Authors: Cauvin Sandrine
Published: September 2012

« 9 Français sur 10 de plus de 45 ans veulent vieillir chez eux, mais bien souvent leur logement n’est pas adapté. » Depuis 2007, le groupe Réunica se mobilise afin de permettre de faciliter l’adaptation de l’habitat, mais aussi de contribuer à une prise de conscience de l’importance des dangers domiciliaires avec l’avancée en âge. Réunica domicile et le projet développé dans la résidence les Strélitzias située à Juan-les-Pins illustrent concrètement l’engagement du groupe dans ce domaine afin d’apporter des réponses aux difficultés et aux risques posés à domicile en développant la prévention.
Prévention des maladies et promotion de la santé des personnes âgées
Authors: Béland François
Published: September 2012

Il n’est pas très utile d’utiliser le concept de prévention de façon générique pour désigner la panoplie d’interventions cliniques, programmatiques et populationnelles à la disposition de la santé publique. Aussi, vaut-il mieux distinguer la prévention de la promotion de la santé et des approches populationnelles. En prenant la fragilité chez les personnes âgées comme exemple et en simulant des distributions différentes de la fragilité à différents âges dans une population imaginaire, nous illustrons comment le choix d’approches préventives, par groupes vulnérables ou populationnelles dépend des objectifs des politiques de santé, des formes caractéristiques des distributions des risques dans une population et des parcours de vie qui les gênèrent.
De la prévention à l'accompagnement de la personne vieillissante
Authors: Cecchi-Tenerini Roland
Published: September 2012

La MGEN est un acteur de la protection sociale, un offreur de soins et de services, un mouvement solidaire et un regroupement d’usagers. Elle est légitime pour mener des actions d’accompagnement des personnes vieillissantes. Mais le vieillissement n’est ni une pathologie, ni un facteur de risque, ni même un risque. Son accompagnement relève d’une approche globale dépassant le soin et permettant alors une espérance de vie en bonne santé. La couverture assurantielle de la MGEN fait partie intégrante d’un dispositif global de prise en charge de la dépendance des adhérents et de leurs proches. Mais cette légitimité de l’intervention de la MGEN et de la mutualité ne sera pleine et entière que si les pouvoirs publics créent les conditions d’une prise en charge globale et effective pour tous.
Tenter de réduire les inégalités sociales de santé
Authors: Delcourt Jean-Baptiste
Published: September 2012

Les aidants familiaux jouent un rôle primordial dans la prise en charge à domicile de personnes souffrant de la maladie d’Alzheimer ou de troubles apparentés. Leur accompagnement quotidien est souvent difficilement compatible avec une vie personnelle, familiale et sociale épanouie. S’occuper d’un parent malade à domicile génère en effet des problèmes psychologiques (stress ou dépression face aux troubles comportementaux), mais aussi financiers (ex. : adaptation du logement ou rémunération d’une garde malade si nécessaire). Face à ce constat, la Mutualité française a mis en place un programme de soutien psycho-éducatif d’aidants de patients souffrant de maladie d’Alzheimer appelé Fil Mauve ® .
Powerful Gear Shifting Control for Hybrid Electric Bus with Automated Manual Transmission
Authors: Chen Yong Dan , Xi Jun Qiang , Xu Chun Guang
Published: September 2012

Traditionally a gear shift with clutch and synchronizer control makes the synchronisation phase unnecessarily long torque gap time. Based on the benefit of a single shaft parallel hybrid electric bus (PHEV), fast gear shifting and reducing the shafts speed oscillation can be realized by controlling the electric machine with Model Predictive Control (MPC ) method instead of sliding the clutch and synchronizer to a torque-free state in the transmission. Detailed mathematical models of different driveline states are presented and to improve driving comfort. Theoretical and simulation analysis results are compared with experimental ones from the road experiment in equal conditions in order to prove the validity of the gear shifting control strategy.
An Orbit-Based Search Algorithm to Solve N-Queens Problem
Authors: Zhang Jun , Zhang Zi Li
Published: September 2012

To analyze N-Queens problem in permutation space, this paper defines isomorphic operations of permutation to dihedral group D4. With these operations to find elements within an orbit, two operations on orbits are also defined to generate new orbit from existing ones. Orbit signature is proposed to uniquely identify different orbits on orbit space. A search algorithm based on orbit signature is presented, and finally the effectiveness of the algorithm is illustrated by an example.
The Design and Implementation of Intelligent Street Lamp Control System
Authors: Cui Li Gong , Cao Yan Yan , Lin Mei
Published: September 2012

Aiming at existed problems in traditional lamps and monitoring system, an intelligent street lamp control system based on AT89S52 as the control unit is put forward. It consists of keyboard input, clock testing and display circuit. The system uses constant current source to drive the lamps with dimming capabilities, and makes use of photoresistor to test the brightness of environment. It also alarms by the way of light and sound when the lamp fail to light. In this paper, we design software and hardware of the street lamp control system, and realize the design concept the method and the process of intelligent street lamp control system based on the single chip microcomputer.
An Improved Particle Swarm Optimization Algorithm
Authors: Jiang Chang Yuan , Zhao Shu Guang , Guo Li Zheng , Ji Chuan
Published: September 2012

Based on the analyzing inertia weight of the standard particle swarm optimization (PSO) algorithm, an improved PSO algorithm is presented. Convergence condition of PSO is obtained through solving and analyzing the differential equation. By the experiments of four Benchmark function, the results show the performance of S-PSO improved more clearly than the standard PSO and random inertia weight PSO. Theoretical analysis and simulation experiments show that the S-PSO is efficient and feasible.
Parallel Algorithm for Solving 3-D Freezing Problems in Biological Tissues during Cryosurgery
Authors: Zeng Peng , Deng Zhong Shan , Liu Jing
Published: September 2012

Treatment planning based on numerical prediction before or during cryosurgery is an indispensable way to achieve exactly killing of tumor. However, conventional sequential computation is difficult to meet the challenge of real-time assistance with complex treatment plans. In this study, two parallel numerical algorithms, i.e. explicit finite difference scheme and alternating direction implicit scheme, based on an effective heat capacity method are established to solve three-dimensional phase change problems in biological tissues subjected to freezing of multiple cryoprobes. The results as well as speedup of parallel computing were compared. It was shown that the parallel algorithms developed in this study can be used to perform rapid prediction of temperature distribution for cryosurgery, and that parallel computing is hopeful to assist cryosurgeons with prospective parallel treatment planning in the near future.
Doppler Shift Estimation for TD-SCDMA System over Railway Environments
Authors: Wang Jun Feng , Cui Yue , Teng Jian Fu , Ma Xiu Rong
Published: September 2012

In this paper, a new Doppler shift estimator is proposed for Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) over railway environments. Different from other existing methods, which commonly assume that the fading channel coefficients are available for the Doppler estimators, the proposed estimator is developed based on the signals which contain unknown frequency selective fading channel coefficients, unknown Rice factor and random receiver noise; it contains three steps. The statistical properties of the training symbols which are called near independent identically distributed (i.i.d.) training sequences, i.e., midamble, are first analyzed. Afterwards, by the help of a training sequence, the second-order and fourth-order statistics of the received signals are calculated. Then, by exploiting these statistical results, the Doppler shift estimator is obtained. The proposed estimator employs a smoothing function with corrective factor. By optimizing the corrective factor, an accuracy solution is acquired within the Doppler shift range of possibilities. Simulation results indicate that the proposed estimator is greatly reliable and effective to estimate Doppler shift up to 400 Hz.
Telemetry Data Acquisition and Analysis in Integrated Baseband System Based on TCP/IP Protocol
Authors: Zhang Tao , Gui Yong Sheng
Published: September 2012

This paper briefly introduced the integrated Command Ranging & Telemetry (CRT) baseband system of a satellite TT&C ground station, and a software was developed with C++ Builder 6.0 to acquire and store the important telemetry data. It effectively resolved the problems of data acquisition and storage for important parameters from baseband system, and it was applied to fault analysis and diagnosis of satellite signals.
Relationship among Soil Surface Roughness, Topsoil Porosity and Rainfall in Tilled Field
Authors: Lin Jian Hui , Sun Yu Rui , Zhang Hui Juan , Lammers Peter Schulze
Published: September 2012

Topsoil porosity (TSP) is an important parameter for the research of soil physics, agriculture and environmental protection. However, the traditional method for measuring porosity is time consuming. Conversely, a series of new methods measuring soil surface roughness (SSR) are increased and become more and more quickly. Some researchers propose to predict TSP by SSR. In this study, two fields cultivated by different tillage type were investigated under natural condition during four years (2006-2009). The results of this study show that (i) both of soil roughness and porosity are decreased over time; (ii) there are strong correlation between soil porosity and roughness effected by rainfall; (iii) after introduce the index of accumulative mean rainfall (AMR), a model of multiple linear regression for presenting the correlation among SSR, TSP and rainfall was built using sampling data of 2006-2009 with R2>0.7.
TOPSIS Evaluation Model of Surface Water Quality Based on Normalized Index Values
Authors: Wang Jia Yang , Yu Chun Xue , Li Zuo Yong , Wang Wen Sheng
Published: September 2012

By setting up the reference values and the normalized transformation forms for multiple indexes of the surface water, the TOPSIS evaluation model of surface water quality based on normalized indexes was proposed. It was used in water quality evaluation cases about 6 monitoring sections of Li River form 2008 to 2009, and the results show that the model is practical and universal.
UV Protective Effect of Anthocyanin Extract from Lonicera caerulea var. Edulis
Authors: Zhao Hai Tian , Wang Zhen Yu , Cheng Cui Lin , Ma Feng Ming , Yang Xin , Yao Lei
Published: September 2012

In the present study, we investigated the protective effect of anthocyanin extract from Lonicera caerulea var. edulis (LCA) on UVC-induced lipid and protein peroxidation using lecithin and Bull Serum Albumin (BSA) in vitro model. We also investigated the protective effect of anthocyanin on UVC induced cell injury in Spleen lymphocytes of mouse via MTT and comet assays. Peroxidation of lecithin and BSA generated by exposure to UVC radiation was significantly decreased by addition with various concentrations of LCA. Moreover, LCA exhibited an inhibitory effect on DNA damage induced by UVC radiation when compared with the control group, the DNA damage decrease at the LCA concentration of 50-200ug/ml, in comet assay. These results indicate that LCA has certain protective effect to ultraviolet radiation damage.
Rock Landslides Remote Monitoring Warning System Based on the Wireless Communication Technology
Authors: Yang Jun , Tao Zhi Gang , Zhang Peng , Chen Xiao Gang , Gui Yang
Published: September 2012

Wenchuan Earthquake occurred in Wenchuan, Sichuan Province, China, and numerous geo-hazards broke out simultaneously and landslides, collapse, debris flows pose a great threat to the security of life and property in earthquake hitting area. The post-earthquake geo-hazards, especially landslides will continue for years. Based on the North Mountain landslide triggered by Wenchuan earthquake in Fengxian, a new landslide monitoring principle that sliding force is greater than the anti-sliding force is the necessary and sufficient condition to occur the landslide is put forward, earthquake and rainfall condition also are take into consideration. According to the results of engineering geologic investigation and numerical simulation, the burial depth of potential sliding surface is determined, and the functional relationship between sliding force and perturbation force is set up. According to above analysis, two sets of Landslide remote monitoring systems (abbreviated SPRM-01) are installed on North Mountain Landslide, and around 15 months monitoring data are collected, based on these data two sets of monitoring curves are obtained, which can indicated the change feature of sliding mass and the analysis results provide scientific basis for the stability analysis and hazard assessment of sliding mass.
Development of Landslide Information Acquisition-Transmission System Based on Wireless Communication Technology
Authors: Zhang Peng , Tao Zhi Gang , Chen Xiao Gang , Zhang Zhao , Su Feng Bin
Published: September 2012

Wireless communication technology has been used widely, different technologies have different application range and applicability. In this study, several commonly used wireless communication technologies were comparatively analyzed on the transmission rate, use cost and power consumption, and so on. It is concluded that the characteristics of ZigBee technology accord with the research needs, and it has many advantages in landslide disaster remote monitoring applications. Wireless sensor network was established based on ZigBee technology, then planar landslide information acquisition transmission system was developed, and immediately applied in engineering fields. Application results show that the system runs stable, and its effect is really good, which provides powerful support for later promotion.
Design of Mobile Acoustic Source Positioning System
Authors: Du Chen Lin , Yang Kun
Published: September 2012

This paper presents a method of mobile acoustic source positioning system in the realization of intelligent car localization with the only acoustic signal available. This system consists of intelligent car, sensors and MCU. And it is not limited with the intensity of light using only acoustic signal to realize its auto-controlled localization. This system has merits like simplicity, low cost and low power consumption, and it can be applied in the voice positioning robotic technology.
The Application of I2C Bus in Mobile Phone
Authors: Dong Qing Xia
Published: September 2012

sup>2C serial bus is one kind of simple double-lines bus which is developed for effective control between the electronic devices by the Philips Corporation. In this paper, I2C bus structure, specialty and working theory are described, and the bus signal type, wave figure are provided. We Provides the usage of I2C bus on the mobile phone and illuminate how I2C manage the module on the mobile phone to realize the module operate and make the phone work. With Pearl and Onyx phone as a sample, we describe the I2C bus and the related circuit components' importance to the phone. Any change on the components of I2C circuit can provide big variance to the phone performance.
Reduced Complexity FSD Algorithm for MIMO Detection
Authors: Mao Xin Yu , Ren Shu Bo , Xiang Hai Ge
Published: September 2012

Detection is a major challenge for the utilization of multiple-input multiple-output (MIMO) system. Even the fixed sphere decoding (FSD), which is known for its simplicity in calculation, requests too much computation in high order modulation and large number antenna system especially for mobile battery-operated devices. In this paper, a reduced FSD algorithm is proposed to simplify the calculation complexity of the FSD while maintaining the performance at the same time. Simulation results in a 4×4, 16-QAM system show that up to 89% calculation can be saved while the performance drop is less than 0.1dB when SNR=24.
Using Composite Classifier Systems to Predict Protein Locations
Authors: Lin Jie , Wang Yan
Published: September 2012

Predicting protein location is both an important and challenging topic in molecular and cellular biology. As we all know that the location of proteins sheds light upon the function of a protein whose location was uncertain. But the success of human genome project led to a protein sequence explosion. It is in a great need to develop a computational method for fast and reliably predicting the locations of proteins according to their primary sequences. In this paper, we use composite classifier system that was formed by a set of k-nearest neighbor (K-NN) classifiers, each of which is defined in a different pseudo amino composition vector. The location of a queried protein is determined by the outcome of voting among these constituent individual classifiers. It is show through the outcome that the classifier outperformed single classifier widely used in biological literature.
Antioxidant Properties of Ethanol Extracts from Hohenbuehelia serotina and Armillaria mellea
Authors: Ji Hong Fang , Zhang Ling Wen , Zhang Hai Yan , Zhang Gui Hai , Wang Qing , Zhang Hui Rong
Published: September 2012

Ethanol extracts from Hohenbuehelia serotina and Armillaria mellea fruit bodies were prepared and investigated for their antioxidant capacities in three different assays, namely, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity, reducing power and chelating ability on ferrous ions. Among the two mushrooms, ethanol extracts from A. mellea was more effective than that from H. serotina in scavenging DPPH free radical ability, while ethanol extracts from H. serotina was some higher than that from A. mellea in reducing power. With regard to chelating effect on ferrous ions, at 5 mg/mL, chelating ability of ethanol extracts from H. serotina were 43.17 %, while that from A. mellea was 46.54%. It can be concluded that ethanol extracts from A. mellea and H. serotina were good in antioxidant properties.
Enzymatic Synthesis of Ferulyl Oleins and their Inhibition Effects on Nitrosamine
Authors: Chen Lin Lin
Published: September 2012

Ferulyl oleins were synthesized from ethyl ferulate and triolein with Lipopan lipase. The influences of reaction parameters, such as reaction system and water activity were evaluated. Among the tested lipases in different reaction system, Lipopan S BG appeared to be the most appropriate resulting in a overall yield of ferulyl oleins 28.31% within 120h in toluene system, whereas trans esterification degree with other lipases did not exceed 20% in any condition. Similarly, the Lipopan lipase expressed the highest transesterification yield at aw = 0.33. The inhibition of nitrosamine by ferulyl oleins in vitro experiments were performed. The results showed that ferulyl oleins had a greater ability to inhibit the N-nitrosodimethylamine formation than ferulic acid and ethyl ferulate did. Ferulyl oleins showed an inhibition rate as high as 76.9%. In the case of nitrite, the extent of the inhibition by ferulyl oleins was slightly lower than EF. They all exhibited the highest inhibition rate at the concentration of 1.5mg/mL. The results suggest that ferulyl oleins can inhibite nitrosamine formation efficiently.
Mining the Bioinformation of Differentially Expressed Genes in Obese Mice Treated with Chronic Intermittent Hypoxia Based on the Bioinformatics Methods
Authors: Bi De , Xiao Hua Jun , Zhou Cui Hong , Zhou Jun
Published: September 2012

Objective: To analyze the differentially expressed genes expressed genes in obese mice that treated with chronic intermittent hypoxia (CIH) for getting better understanding of the molecular characteristics in the obese mice caused by CIH. Methods: Got the microarray hybridization data from the Gene Expression Omnibus (GEO) database. Identified the differentially expressed genes expressed genes in CIH obese mice and the patterns of their regulation using public bioinformatics software and database, such as BRB-Arraytools, Genecodis and DAVID, KEGG. Results and Conclusion: We found the Peroxisome proliferator activated receptors (PPARs) pathway involved in the down-regulated genes. These data mining findings between room air and CIH mice by bioinformatics methods could provide better understanding of the molecular activity change in obese caused by CIH.
Optimal Conditions for Cholesterol Oxidase Production and Enzymatic Properties Study Produced by Monascus X-1
Authors: Hao Lu , Zhang Qian , Wang Chang Lu , Chen Mian Hua , Wang Yu Rong , Li Feng Juan , Yang Hua , Wang Jing
Published: September 2012

In this paper we optimized liquid fermentation conditions of Monascus X-1 on cholesterol oxidase (COD) production, and then the COD was isolated by ammonium sulfate deposition and its properties were studied. The results showed that COD produced by Monascus X-1 was a kind of extracellular enzyme. The yields came to maximum at the 6th day. The most suitable medium for Monascus X-1 generating COD was the rice medium, the highest enzyme activity was obtained at 140r/min, inoculum concentration 6%, when 60mL of the culture in 250mL shake flasks grown in rice medium. Under the optimized cultivation conditions, the enzyme activity reached 1168U/L, which increased 1.52 times compared to the previous fermentation conditions. The enzyme had favorable pH and thermal stability, while the optimum pH and temperature of enzyme activity was 7.0 and 40, respectively.
Comparison of Multi Freedom Degrees for Patient Positioning Using Kilovoltage Cone Beam CT in Image-Guided Radiotherapy
Authors: Wang Jing Jing , Wang Hong Jun , Yin Yong
Published: September 2012

Kilovoltage Cone Beam CT (kV CBCT) based image guided radiotherapy (IGRT) is an important approach to correct patient setup which can generate 3D patient anatomy image in radiotherapy process. This paper discusses multi degrees of freedom patient positioning using CBCT based IGRT and presents a new coordinate system classification method. We can conclude that it is essential for correct patient setup to overlap three key points, namely the center of mass (CM) of tumor target, the origin of treatment planning CT image coordinate system, the origin of CBCT image coordinate system). In addition, this paper gives the implementing method of overlapping these three points.
Research on Welding Line Defect Recognition of the In-Service Pipeline Using X-Ray Detecting
Authors: Yuan Pei Xin , Zhang Cong Cong , Yuan Yue
Published: September 2012

This paper, based on the practical demands of in-service pipeline detection, a set of X-ray digital image welding line defect intelligent recognition system is established. Taking the welding line image detected by X-ray as objects of study, self-adaptive median filter method filters noise, high frequency enhancement filter method conducts the image edge sharpening enhancement; a edge detection method for X-ray digital image based on morphological gradient is proposed; a group of characteristics parameters that accurately reflects the essence characteristic of defects is selected, using a self-organizing, self-adaptive three-layer feed-forward neural network, applying BP algorithm, the BP neural network recognition system is established, thus, to achieve detection and recognition of weld defects.
Introducing Adjuvants for Dendritic Cell Algorithm to Detect Stealthy Malware
Authors: Fu Jun , Liang Yi Wen , Tan Cheng Yu , Yang Huan
Published: September 2012

The increase in stealth of malware has brought the Dendritic Cell Algorithm (DCA) many difficulties in malware detection. To solve this problem, in this paper we take inspiration from immunological adjuvant which can enhance the immune responses to weak antigens, and propose its counterpart namely artificial adjuvant as an improvement for the DCA. Artificial adjuvants are capable of increasing the immunogenicity of stealthy malware and accelerating the reaction of the dendritic cells (DCs). In such a way, they shed some lights for the DCA on improving the performance of stealthy malware detection in respect of not only improving the detection rate, but also helping detecting hidden malware as soon as possible.
Experiment Research of Diffuse Optical Tomography Imaging in Homogeneous Medium
Authors: Zhang Wei , Fang Bin
Published: September 2012

Given the time-domain measurement of picoseconds pulses and frequency-domain measurement of high-frequency modulation have limitations to realize, this paper introduces the experiment research which use square-wave modulation laser source as incident light source of the diffusion optical tomography in homogeneous medium. Based on the finite-element method, the forward model can be established. The analytical solution of the homogeneous medium can obtained from the derivation of the diffusion equation, after that, we build the optical experiment platform, derive the experimental solution from the platform. Finally, the consistent result is obtained by the comparison of the simulation, the analytical solution and the experimental solution. The result clearly demonstrated the accuracy and effectiveness of the proposed method which use square-wave modulation laser source as incident light source to measure the light intensity.
A New Deformable Image Registration Method Based on B-Spline for Clinical 4D CT
Authors: Wang Hui , Yin Yong , Wang Hong Jun , Li Deng Wang
Published: September 2012

Four-dimensional computed tomography (4D CT) which clearly includes the temporal changes in anatomy during the diagnosis, planning, and delivery of radiotherapy has great promise. Deformable image registration has the potential to reduce the geometrical uncertainty of the target, and makes it possible to signally improve the treatment accuracy by optimizing treatment in response to anatomical uncertainty. In this paper, we used Scale Invariant Feature Transform (SIFT) algorithm to extract landmark points, and we proposed a registration method based on B-Spline model, then used a limited memory quasi-Newton method to optimize the system, also calls the limited memory BFGS (L-BFGS) method. The deformable registration model B-Spline model can derive the images at all intermediate phases from sets of 3D images acquired at a few known phase points. Because 4D CT can track the location of region of interest (ROI) and tumors over several respiratory cycles, so 4D CT can make the apparent size of the tumor which is caused by breathing motion more accurate. The method is evaluated on 10 4D-CT data sets of patients in a breathing cycle.
Modeling Fluid Flow in Angiosperms Xylem Pits
Authors: Xu Fang , Chen Jiao Liao , Ai Qin Lin , Chen Qi
Published: September 2012

Hydraulic resistance of water flow in the xylem is mainly caused by Pits. Pits between vessels play an important role in the water transport of plant. The pit membrane worked as porous, the water flow through pit is modeled using CFD(Computational fluid dynamics) approach of low k-ε turbulence. Consiedered the deflection of homogeneous membrane affected by pressure difference, the pit hydraulic resistance calculated according to simulation results is consisent with hydraulic resistance value from direct measurements, which indicated that the model can provide reliable estimation the flow of water through pit.
Segmenting Algorithm and Publishing Based on UVA Image
Authors: Wang Jia Feng , Cui Xi Min , Yuan De Bao , Jin Jing Jing , Qiu Ya Hui , Liu Huan
Published: September 2012

With the continuous development of UAV remote sensing technology, UAV remote sensing will become one of the main airborne remote sensing platforms, Image acquisition and its post-processing of the UAV remote sensing have become focus of todays study. This paper presents an idea of image segmentation and image publication of UAV remote sensing, and provides reliable information for decision makers. It possesses a certain value.
Parametric Modeling and Moving Simulation of Vibrating Screen and Tubers on Potato Harvester
Authors: Sang Yong Ying , Yu Hua Li , Jia Jing Xia
Published: September 2012

These In order to overcome the behindhand and inefficient design of potato diggers, feature-based parametric modeling software Autodesk Inventor was used for the modeling of potato diggers. The swing sieve, movement simulation with ADAMS was carried out. The complex velocity acceleration and displacement curves were analyzed. Collision pressure curves were analyzed too. νis less than or equal to 500 mm/s, and αis more than or equal to 2.5m/s2, and less than or equal to 20m/s2. Test results indicated that Collision pressures of small and medium tubers are 120 Newton and 250 Newton respectively, which are all smaller than damaging pressure. Potato can be transferred freely and damage rate is less than or equal to 4% when the frequency is 5.5Hz and the swing is 30mm. It satisfies the design request.
Meshing Method of High Precision FEM in Large Complex Structural Simulations
Authors: Xue Yan Hua , Wang Zhi Guang , Li Xiao Hong , Jiang Xin
Published: September 2012

Shing is playing an important role in the large complex structural FEM simulations; it has a direct effect on calculating precision of structural simulations. For increasing the calculation accuracy and analysis accuracy of complex structure, the finite element meshing problems is proposed on the finite element analysis of large complicated structures. The effects caused by element type, mesh density and intergradations on calculating precision are studied and discussed. A research argues that with length-width ratio of 1~2 and length-thickness ration of 1.5~4.5 of two-dimensional rectangular element, the quality of meshing method of two-dimensional element is above normal. As the height of one-dimensional element is equal to the sum of reinforcing rib height of outer panel and half the thickness of panel, more accurate results can be obtained.
Real-Time Flame Simulation Based on GPU
Authors: Wei Wei , Huang Yan Qiong
Published: September 2012

This paper proposed a method of flame simulation based on Lagrange process and chemical composition, which was non-grid and the problems associated with grids was overcome. The turbulence movement of flame was described by Lagrange process and chemical composition was added into flame simulation which increased the authenticity of flame. For real-time applications, this paper simplified the EMST model. GPU-based particle system combined with OpenGL VBO and PBO unique technology was used to accelerate finally, the speed of vertex and pixel data interaction between CPU and GPU increased two orders of magnitude, frame rate of rendering increased by 30%, which achieved fast dynamic flame real-time simulation.
Application of Set Pair Analysis Model Based on Entropy Weight for Comprehensive Evaluation of Water Resources Carrying Capacity
Authors: Ma Liang , Zhao Jing Hua , Hong Ming , Chen Liang Liang
Published: September 2012

In view of the uncertainty of evaluation indicators for water resources carrying capacity the theory of set pair analysis is adopted. The samples are preliminarily classified by calculating the connection degree between the samples and evaluation indicators. Then the samples are further ranked through the identity, difference and antagonism set pair analysis. The weights of evaluation factors in the model are obtained from the avail value of data reflecting the information entropy, by which the weight allocation is more reasonable. The application result of this model to an example is compared with those obtained from integrated evaluating methods and the attribute recognition method. It shows that the proposed method is practical and reasonable.
Implicit Simulation for Three-Dimensional Spatial Morphology of Geological Body Based on Marching Cubes Algorithm
Authors: Zou Yan Hong , He Jian Chun , Ding Ming Lei
Published: September 2012

Due to the discrete and incomplete sample data for the geological body in geological investigation, it is difficult to construct the three-dimensional model of geological body. Therefore, based on data interpolation, we propose a method to implement the three-dimensional implicit simulation for the geological body by programming with marching cubes algorithm. Firstly, the spatial interpolation method is used to predict the distribution trend of geological body and the three-dimensional spatial regular data field for the geological body is established. Secondly, the three-dimensional isosurface of geological body is extracted from discrete points by the marching cubes algorithm. Finally, combining with three-dimensional visualization technology of OpenGL, three-dimensional spatial morphology of geological body is simulated by tiny triangle approximation in computer graphics. Taken the borehole data in exploration engineering as example, this method is applied to develop the three-dimensional implicit simulation for ore body. The result of implicit simulation is close to the delineation of explicit simulation by human-computer interaction in three-dimensional geological modeling software. It shows that this method is feasible and efficient for the three-dimensional simulation of geological body.
The Cleaning Performance Simulation and Optimization of Rear Rolling Type Sweeper
Authors: Bian Xue Liang , Feng You Ning , Cui Can , Wan Da , Pang Hui
Published: September 2012

Through analyzed the cleaning process of rear rolling type sweeper, the theoretical model of waste particle trajectory was established during the sweeper working process by using the contact theory of modern contact dynamics, and the ideal theory track of waste particle was simulated and optimized by using MATLAB. The three-dimensional solid model of the working device was created by using UG software, and virtual prototype model was completed by using ADAMS software, and rigid brush was replaced by neutral file with brush features characterize that was generated by finite element analysis software, and contact relationship of waste particle during the working process was added by ADAMS contact order, and rigid-flexible coupling virtual prototype system was completed and kinematics simulation was run. Finally, compared the trajectory curve from ADAMS simulation with the theoretical path from MATLAB, the Theoretical model was proved correctness. The theoretical research and simulation analysis was made test and verify each other. Facilitate the development of the same type of products.
Detection of Endotoxin Concentration Using Piezoelectric Based Biosensor System
Authors: Xiong Xing Liang , Wang Shi Ming , Zhang Yan , Chen Long Cong
Published: September 2012

Endotoxins are ubiquitous in the environment and represent important pathogenic molecules. In this paper, we present a sensitive and reliable method for quantitation and detection of endotoxin based on piezoelectric biosensors, which monitor the gel formation (causing viscosity change) when Limulus Amoebocyte Lysate (LAL) mixed with endotoxin. The resonance frequency shifts of the sensors in contact with different concentration endotoxin were recorded as a function of time. Results showed that there has good relationship between the logarithmic concentration of endotoxin and the maximum clotting rate as well as the corresponding clotting time. The detection limits could be gone down to 0.1pg/ml and the time-consuming is about 1 hour using this system. By comparison of the traditional methods (rabbit pyrogen test and LAL test) for detection of endotoxin, the proposed sensor is much simpler, more precise and lower detection limits.
Research on Patient Privacy-Preservation for Wireless Health Monitoring System
Authors: Huang Qi Ming , Yang Xing
Published: September 2012

With research and development of the telemedicine and the electronic patient information, the remote wireless health monitoring system is facing the challenge of patient privacy protection. This paper proposes an effective patient privacy protection protocol, which protect the privacy of patient information with the encryption algorithm based on identity-based cryptography (IBC) and digital signature during the process of sending, receiving and accessing the patient information, and resist the path monitoring attack of identifying the contact between patients and doctors with the network stream analysis.
Utilization of Granite Powder Waste in Concrete Production
Authors: Vijayalakshmi M. , Sekar A.S.S. , Sivabharathy M. , Ganesh Prabhu G.
Published: September 2012

The ornamental granite stone-processing industries of Tamilnadu state produce tons of fine powder wastes during sawing and polishing. It is a non-biodegradable waste that can be easily inhaled by human being and animals and is also harmful to the environment. The main objective of this study is to investigate experimentally the suitability of granite powder (GP) waste as a substitute material for fine/natural aggregate in concrete production. The physical and chemical characterization of the GP waste was also addressed. The experimental parameter was the percentage of granite powder substitution. The cubes and cylinders were prepared using 0%, 5%, 10%, 15%, 20% and 25% of fine/natural aggregate substituted by GP waste. To understand fully the influence of GP waste on the behavior of concrete, several tests such as density, slump cone, split tensile strength, flexural strength; ultra sonic pulse velocity (UPV) and compressive strength tests were performed. The Young’s modulus of elasticity of the concrete was also determined. The GP waste exhibited a very high specific surface value of about 340kg/m2 and chemical analysis results showed that the examined material contains about 77% of silica (SiO2). Experimental results revealed that the rough texture and high specific area of the GP waste significantly decreased the workability of the concrete especially for the substitution level of 20% and 25%. The obtained test results show that the substitution of GP waste up to 15% does not affect the mechanical and fresh concrete properties of the concrete and it was recommended that the replacement of natural sand by GP waste up to 15% of any formulation would be favorable for concrete making.
Use of Regression Models to Study Silk Reeling
Authors: Mwasiagi J.I. , Ochola J.R. , Wambua I.M. , Musembi A.W. , Lusweti J.K.
Published: September 2012

The Quality of Silk Yarn Is Affected by the Reeling Process. the Silk Reeling Process Is Affected by Several Factors which Include the Reeling Temperature and Silk Cocoon Boiling Time. the Aim of this Paper Was to Investigate the Effect of Reeling Temperature and Cocoon Boiling on the Silk Filament Strength and Frequency of End Breaks during Reeling by Using Regression Models. the Results of this Research Work Indicated that Boiling Time and Reeling Temperature Were Positively Correlated with Filament Strength. on the other Hand the Number of End Breaks Increased with Boiling Time. as Reeling Temperature Increased the Number of End Breaks Showed a Decreasing Trend.
Tensile and Flexural Properties of MMT-Clay/ Unsaturated Polyester Using Robust Design Concept
Authors: Rajini N. , Winowlin Jappes J.T. , Rajakarunakaran C. , Siva I.
Published: September 2012

The effect of nanoclay on the mechanical properties of Isophthalic unsaturated polyester was studied with the help of robust design Concept. Organo modified MMT nanoclay (Nanomer 1.31PS) was used as reinforcement. The weight percentage of nanoclay, impeller blade design, mixing hours and mixing speed were taken as control factors. In Taguchi design of experiments, L9 orthogonal array was employed to investigate the effect of control factors on mechanical properties such as tensile and flexural strength. X-ray diffraction (XRD) and Atomic force microscopy (AFM) results show the intercalation /exfoliation of clays in the polyester matrix.
An Example Emphasizing Mass–Volume Relationships for Problem Solving in Soils
Authors: Heitman J. L. , Vepraskas M. J.
Published: September 2012

Mass–volume relationships are a useful tool emphasized for problem solving in many geo‐science and engineering applications. These relationships also have useful applications in soil science. Developing soils students’ ability to utilize mass–volume relationships through schematic diagrams of soil phases (i.e., air, water, and solid) can help to facilitate cross‐discipline problem solving efforts encountered throughout their careers. The objective of this article is to provide an applied example emphasizing mass–volume relationships and schematic diagrams for problem solving in soils. The example is taken from a study in restoration of an organic wetland soil. Drainage of organic soils results in a reduction of horizon thickness, termed subsidence, through shrinkage, loss of buoyancy, and oxidation of organic matter. Knowing the amount of subsidence that has occurred is important in restoration efforts, but is difficult to determine from conditions post‐drainage at a given site. Scientists must make use of mass–volume relationship and inference to assess the amount of subsidence that has occurred. In this example, information about post‐drainage and offsite horizon thickness, bulk density, and sand content are used to develop an estimate of the amount of subsidence. General information about the site is presented followed by assumptions used to develop the solution. The problem, assumptions, and step‐by‐step solution are divided into parts to facilitate use as a homework example, lecture example, or group problem solving activity. Questions and discussion points are presented to encourage student development of their own solution to the problem.
Uncertainty Exposed: A Field Lab Exercise Where GIS Meets the Real World
Authors: Prisley Stephen P. , Luebbering Candice
Published: September 2012

Students in natural resources programs commonly take courses in geospatial technologies. An awareness of the uncertainty of spatial data and algorithms can be an important outcome of such courses. This article describes a laboratory exercise in a graduate geographic information system (GIS) class that involves collection of data for the assessment of spatial uncertainty. Students delineate a forest clearing using digital aerial photographs and global positioning system (GPS) receivers. They also measure terrain attributes such as slope, elevation, and aspect at nine selected points in the field and extract similar measures for those locations from a GIS elevation dataset. Collating data from students and groups yields a rich dataset of multiple observations. This dataset is then analyzed to develop estimates of uncertainty such as standard deviation and root mean square error (RMSE). Results from a recent lab exercise indicate that area of a forest clearing had coefficients of variation of 11.5% for delineations from aerial photographs and 7.6% from GPS delineations. The RMSE for GPS X coordinate, GPS Y coordinate, and elevation at nine terrain measurement points were 5.3, 7.1, and 3.4 m, respectively. The RMSE for slope percent was 4%, and the GIS‐based slope estimate was within the range of field estimates at only seven of nine points. The RMSE for field‐measured aspect was nearly 17 degrees. An online assessment of the lab exercise indicated that most students found the exercise was worth the class time devoted to it, and many students gained valuable insights about spatial uncertainty.
Risk‐Taking Behavior: An Experimental Analysis of Individuals and Dyads
Authors: Deck Cary , Lee Jungmin , Reyes Javier , Rosen Chris
Published: September 2012

The decision to undertake risk is often made by pairs (dyads), while much of the economics literature on risk taking focuses on the individual. We report the results of controlled laboratory experiments that compare behavior between individuals and pairs. Using the procedure and a within‐subjects design, we find that pair choices are largely consistent with subjects bargaining over the outcome rather than the pairs taking a more extreme stance than the individual members. Further, gender and age but not personality seem to influence relative bargaining weight. We also find that individuals are more willing to take risks after making decisions as part of a pair than beforehand. Both the personality of one's partner and nontask social interaction influence subsequent individual risk‐taking behavior.