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Applications of Power Rail Track Program to Tracings of Brazilian Railways

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Journal of Civil Engineering and Architecture 2016年第4期10卷 501-512页

作者： Sonia Janneth Rosero Munoz Mhileizer Arielys Toledo Arenas Diogenes Cortijo Cost cassio EduardoLima de paiva Department of Civil Engineering University of Campinas Sao Paulo 13209201 Brazil

In Brazil, the use of software and applications in railway geometric designs is rare. Currently, after the division and privatization of the national rail network, the concessionaires who assumed the administration, are investing in modernization, recovery and extension of this transport model to make it more efficient. The PIL （Program of Investment in Logistics） has generated growth of the sector in response to the amount of investments, greatly enhancing the load capacity and optimizing the geometric design, which would allow speed of 80 km/h. Based on this information, the objective of this research is to verify the software applications of Power Rail Track Program of Bentley Systems, Inc. for geometric designs in future deployments of railways in Brazil. This software is based on numerical calculations, including roller adjustment by the least squares method to calculate and choose the best alignments, and regression tools, to a fast and effectively optimization of various parameters of the geometry for a future or existing railway. Different variables that allow you to optimize the geometric design are analyzed, considering several optional alignments and complex restrictions present in geometric design, taking into account variables such as circular curves, transition, tangents and rays. The software regression tools include curvature diagrams identifying points and curves, tangent and spirals. The analysis results are presented quickly and points can be added or deleted from the regression analysis, providing improved tracing. The software also allows to detail the elements of the executive project of the railway line such as rails, joints, turning points, waypoints and others. The result of this study has shown that the application of the Power Rail Track Program generates significant cost savings in time and increases in productivity, providing greater opportunity to optimize the geometry and reducing geometric design costs.

关键词： Geometric design railways optimization software geometric tracing.

When is the best surgical time for benign prostate hyperplasia treatment?

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Asian Journal of Andrology 2024年第1期26卷 119-119页

作者： Lucas Mira Gon cassio Riccetto Division of Urology Department of SurgeryUniversity of CampinasUNICAMPCampinas13083888Brazil

Urologists are familiarized with benign prostate hyperplasia(BPH),and lower urinary tract symptoms(LUTS)are in everyday ***,can we improve the assessment to decide which is the best treatment for each patient,or when ... 详细信息

关键词： hyperplasia urinary treatment

Parametric Analysis of the Stability of Degraded Railroad Platforms

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Journal of Civil Engineering and Architecture 2014年第1期8卷 11-18页

作者： Paulo Roberto Aguiar cassio Eduardo Lima de paiva Geotechnical and Transportation Department Civil Engineering School Campinas University (UN1CAMP) Campinas 13000-000Brazil

The current study is developed based on one of the types of subgrade rupture risk suggested by Selig and Waters （1994）. It aims to evaluate subgrade stability railroad, which consists of the slope stability analysis of a railway yard embankment subjected to a wagon load type gondola parked on this track. This proposed analysis was taken into consideration because there are Brazilian railroads in high deterioration level. In some of these lines the tracks are submitted to increasing amount of load every year. The adopted model slope stability to the studied railroad embankments considers the rupture on circular line. It was applied the Geoslope-Slope/W software, version 6, to the evaluation of the platform-slope system. Several situations are adopted to reach the minimum safety slope, permitting to analyze the platform stability to keep railroad traffic under adequate safety level.

关键词： Rupture circle railway yard track tensions at subgrade degraded railway track.

Sensitivity Study of Design Parameters of a Railway Route under Vertical Deformations

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Journal of Civil Engineering and Architecture 2014年第5期8卷 663-672页

作者： Luiz Fernando de Melo Correia cassio Eduardo Lima de paiva Department of Civil Engneering Universidade Estadual de Campinas (UNICAMP) Campinas 13083-970 Brazil

Studying the interaction of components is basic for a railroad project, which is also very important for creating maintenance procedures based on predictions from a model that assumes adequate performance. To determine these interactions, which can have a great number of combinations, the use of a computational model is of vital importance, in this case, the program FERROVIA 1.0 （RAILROAD 1.0） was used. A critical study developed the program FERROVIA 1.0, and its variables were characterized based on values observed in the literature. After initial characterization was carried out, a comparative study was performed on the sensitivity between these variables and the indications of significant behavior for a railway deformed by the known load of a wheel. A statistical program was used to correlate the elements. The intention was to launch the program FERROVIA 1.0 and later use it for 2,187 combinations. The data used in these correlations corresponded to the normal values for the elements used in railroad engineering practice. Our main goal is to understand the behavior of the track vertical deflection according to the variation of the scaling of the various elements of the railway,

关键词： Railway computational model RAILROAD 1.0.

Evaluation between Two Brazilian Railway Tracks

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Journal of Civil Engineering and Architecture 2011年第9期5卷 772-778页

作者： cassio Eduardo Lima de paiva Creso de Franco Peixoto Luiz Femando de Melo Correia Paulo RobertoAguiar Geotechnical and Transportation Department UNICAMP State University of Campinas Brazil Erelys Consulting and Assessment Ltd. Brazil

Most of Brazilian railways were built more than 100 years ago. Some of them were submitted to rebuilding processes while others were just overloaded by additional layers of ballast. Nowadays, Brazil is going through a new railway transport impulse in relation to the increase of load, despite of the necessary supply capacity. For this reason, there were developed evaluations from some Brazilian railways in order to determine their operational conditions. This work shows a comparative analysis of results from two parts of studied old railway, aiming to determine minimum features to enable them to accept higher load axis. One of these studied old railway parts did not have a sub-ballast layer in contrast to the other one. The strains and stresses of these old railway track parts were generated by the same locomotive.

关键词： Railway track field strain survey track deflection basin.

Numerical Solution of the Upper-Convected Maxwell Model for Three-Dimensional Free Surface Flows

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Communications in Computational Physics 2009年第7期6卷 367-395页

作者： Murilo F.Tome Renato A.P.Silva cassio M.Oishi Sean McKee Departamento de Matematica Aplicada e Estatıstica Instituto de Ciencias Matematicas e de Computa¸caoUniversidade de Sao PauloSao CarlosBrazil Department of Mathematics University of StrathclydeGlasgowUK

This work presents a finite difference technique for simulating three-dimensional free surface flows governed by the Upper-Convected Maxwell(UCM)constitutive equation.A Marker-and-Cell approach is employed to represent the fluid free surface and formulations for calculating the non-Newtonian stress tensor on solid boundaries are *** complete free surface stress conditions are *** momentum equation is solved by an implicit technique while the UCM constitutive equation is integrated by the explicit Euler *** resulting equations are solved by the finite difference method on a 3D-staggered *** using an exact solution for fully developed flow inside a pipe,validation and convergence results are *** results include the simulation of the transient extrudate swell and the comparison between jet buckling of UCM and Newtonian fluids.

关键词： Viscoelastic flow Upper-Convected Maxwell finite difference free surface implicit techniques Marker-and-Cell

Cleft Palate Surgical Skills Training Using an Alternative Synthetic Bench Model

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Chinese Medical Journal 2016年第11期129卷 1382-1383页

作者： Andre Silveira Pinho Cesar Augusto Raposo-Amaral cassio Eduardo Raposo-Amaral Rafael Denadai Institute of Plastic and Craniofacial Surgery SOBRAPAR Hospital Caixa Postal: 6028 Campinas Sao Paulo Brazil

To the Editor： Although there have been numerous reports of difl＇erent synthetic simulators that can provide cleft palate training,none offers a completely ideal model.

关键词： SIMULATOR

Vertical Loads Effects Applied on the Pavement Considering the Variation on Tire Pressure

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Journal of Traffic and Transportation Engineering 2014年第2期2卷 107-115页

作者： Pablo Yugo Yoshiura Kubo cassio Eduardo Lima de paiva Adelino Jorge Lopes Ferreira Arthur Eduardo de Freitas Larocca Glaucio Rogerio Cararo Department of Civil Engineering University of Campinas Campinas 13083-852 Brazil Department of Civil Engineering University of Coimbra Coimbra 3030-788 Portugal Department of Mechanical Engineering Alpha Technical Services Curitiba 80520-590 Brazil Chassis and Vehicle Dynamic Engineering Volvo Group Latin America Curitiba 81290-000 Brazil

The main objective of this paper is to analyse the vertical loads effects applied on the pavement, considering the variation of tire pressure, from a truck＇s front suspension. For the measurements, a durability test track located in Brazil has been used. The tire pressure was increased by l0 psi from 90 psi to 130 psi with a constant load of 6 t on the front suspension, the maximum allowed load for front axle according to Brazilian legislation. By applying relative damage concept, it is possible to conclude that the variation on the tire pressure will not affect significantly the load applied on the pavement. However, it is recommended to repeat the same methodology in order to analyse the influence on the variation of the other quarter car model variants.

关键词： Vertical load pavement relative damage.

Acute Effects of Stretching on Flexibility and Performance:A Narrative Review

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Journal of Science in Sport and Exercise 2019年第1期1卷 29-37页

作者： Camila D.Lima cassio V.Ruas David G.Behm Lee E.Brown School of Human Kinetics and Recreation Memorial University of NewfoundlandSt.John’sCanada Centre for Exercise and Sports Science Research(CESSR) School of Medical and Health SciencesEdith Cowan UniversityJoondalupAustralia Department of Kinesiology California State UniversityFullerton7178 Loysburg StreetNavarreFL 32566USA

Passive and active stretching techniques have been shown to increase both chronic and acute range of motion(ROM).Acute ROM improvements can be countered by decreases in muscle performance,primarily after prolonged static stretching(SS)and proprioceptive neuromuscular facilitation(PNF)techniques when not incorporated into a full warm up *** contrast,ballistic stretching and dynamic stretching techniques typically induce either an increase or no change in muscular force and *** review explores studies that have investigated stretching responses on ROM,muscle functionality and ***,the literature demonstrates that prolonged acute SS and PNF stretching can elicit the greatest changes in flexibility,but without additional dynamic activities(*** warm up)can induce neuromuscular force and power output impairments,while increasing ROM and some sports specific *** response to stretching may be determined by the manipulation of confounding variables such as duration,population,volume,test specificity and *** increased dosage of some of these variables during stretching in isolation,augments ROM increases while attenuating muscle force output,except for stretching intensity which may lead to similar *** with high flexibility may have positive effects from stretching when tested on their sport specific performance,while general population may suffer greater negative *** control-ling these variables during stretching protocols may lead to misleading information regarding its effects on muscle performance.

关键词： Passive stretching Active stretching Range of motion Performance