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Estudo comparativo de métodos geoestatísticos de estimativas e simulações estocásticas condicionais; Comparative study of geostatistical estimation methods and conditional stochastic simulations

Furuie, Rafael de Aguiar
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 05/10/2009 Português
Relevância na Pesquisa
46.08%
Diferentes métodos geoestatísticos são apresentados como a melhor solução para diferentes contextos de acordo com a natureza dos dados a serem analisados. Alguns dos métodos de estimativa mais populares incluem a krigagem ordinária e a krigagem ordinária lognormal, esta ultima requerendo a transformação dos dados originais para uma distribuição gaussiana. No entanto, esses métodos apresentam limitações, sendo uma das mais discutidas o efeito de suavização apresentado pelas estimativas obtidas. Alguns algoritmos recentes foram propostos como meios de se corrigir este efeito, e são avaliados neste trabalho para a sua eficiência, assim como alguns algoritmos para a transformada reversa dos valores convertidos na krigagem ordinária lognormal. Outra abordagem para o problema é por meio do grupo de métodos denominado de simulação estocástica, alguns dos mais populares sendo a simulação gaussiana seqüencial e a simulação por bandas rotativas, que apesar de não apresentar o efeito de suavização da krigagem, não possuem a precisão local característica dos métodos de estimativa. Este trabalho busca avaliar a eficiência dos diferentes métodos de estimativa (krigagem ordinária, krigagem ordinária lognormal...

Simulação realística no ensino de emergências pediátricas na graduação; High-fidelity simulation for teaching pediatric emergencies to graduate students

Couto, Thomaz Bittencourt
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 15/10/2014 Português
Relevância na Pesquisa
45.99%
INTRODUÇÃO: Simulação e discussão de caso são métodos de ensino efetivos com alta satisfação dos alunos. Nossa hipótese foi que o mesmo caso apresentado com ambos métodos traria ganho de conhecimento imediato similar em pós-teste, porém maior retenção de conhecimento em teste de retenção e maior satisfação com método de ensino com uso de simulação. MÉTODOS: Estudo prospectivo, não randomizado e controlado, usando um desenho cruzado para método de ensino, testes com questões de múltipla escolha e uma pesquisa de satisfação. Alunos de medicina do último ano fizeram o pré-teste e foram alocados em dois grupos. Grupo Enfermaria participou em simulação de anafilaxia (SIM-ANA) e discussão de caso de taquicardia supraventricular (DC-TSV). Grupo PS fez o oposto (SIM-TSV e DCANA). Alunos foram testados para cada tema no fim do seu estágio (pós-teste) e 4 a 6 meses após (teste de retenção). RESULTADOS: A maioria dos alunos (108- 66,3%) completaram todos testes. Nota média para anafilaxia do préteste foi 43,6% SIM-ANA e 46,6% DC-ANA; pós-teste 63,5% SIM-ANA e 67,8% CD-ANA e teste de retenção 61,5% SIM-ANA e 65,5% DC-ANA. Nota média do pré-teste para taquicardia supraventricular foi 33,9% SIM-TSV e 31...

Uso integrado de metodos de simulação de eventos discretos e continuos na resolução de problems logisticos em parques de diversão; Use integrated of discrete and continuous simulation methods for troubleshooting logistics in amusement park

Sergio Adriano Loureiro
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 26/03/2009 Português
Relevância na Pesquisa
55.9%
O objetivo deste estudo é desenvolver um modelo integrado de simulação de eventos discretos e contínuos que permita descrever e avaliar a dinâmica dos processos de gerenciamento de uma operação de serviços. O modelo foi desenvolvido especificamente no setor de entretenimento para um parque de diversões, sendo um instrumento de auxilio a análise de desempenho e desenvolvimento de políticas de operação. A importância do tema proposto esta na carência de pesquisas acadêmicas brasileiras com enfoque da engenharia no tema entretenimento e parques de diversões, destacando-se a abordagem integrada de diferentes metodologias de simulação. Os métodos adotados para o desenvolvimento desta pesquisa foram os usualmente empregados para construção e análise de modelos computacionais de simulação eventos contínuos e discretos, utilizando-se como referência para o desenvolvimento da modelagem elementos de diferentes parques de diversões brasileiros. A exploração do modelo através de diferentes cenários permitiu avaliar e verificar a eficácia das diferentes políticas propostas sobre o desempenho do sistema. A capacidade de identificar e discriminar o efeito destas políticas propostas sobre qualquer componente do sistema apresentou-se como uma vantagem do método de modelagem proposto; This study has the objective of developing an integrated model of discrete event and continuous simulation that enabling describe and evaluate the dynamics of the processes of managing a services operation. The model will be developed specifically for the entertainment industry in an amusement park...

Implementação e testes de Métodos Monte Carlo para simulação de equilíbrio sólido-líquido; Development and tests of Monte Carlo methods for solid-liquid equilibrium simulation

Tiago Dias Martins
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 05/07/2011 Português
Relevância na Pesquisa
45.98%
O estudo a nível microscópico do Equilíbrio Sólido-Líquido (ESL) só se desenvolveu a partir do século XX e ainda existem aspectos de tal fenômeno que não são bem compreendidos, mesmo para os sistemas mais simples. Por esse motivo, é necessário que métodos eficientes para simular diretamente o ESL sejam formulados. O principal objetivo deste trabalho foi desenvolver e implementar Métodos Monte Carlo Multicanônicos para simular o ESL de sistemas de Lennard-Jones e, então, avaliar a aplicabilidade de tais métodos com base na sua eficiência. Primeiramente, buscou-se melhorar os resultados do método desenvolvido por Muguruma e Okamoto (2008), que visava amostrar a energia do sistema uniformemente e o volume com probabilidade de Boltzmann, enquanto mantinha-se fixo o número de partículas da caixa de simulação cúbica. Em seguida, uma nova abordagem foi proposta, cuja principal característica é não restringir o formato da caixa, embora a amostragem fosse realizada da mesma forma. Em ambos os métodos, a densidade de estados do sistema foi estimada usando a técnica da matriz de transições e uma abordagem de paralelização das simulações foi empregada a fim de se obter uma amostragem mais efetiva. Os resultados obtidos com o primeiro método mostraram que uma simulação como essa depende significativamente do número de partículas. Além disso...

Simulation models applied to practical learning and skill enhancement in direct and indirect ophthalmoscopy: a review

Ricci,Lucas Holderegger; Ferraz,Caroline Amaral
Fonte: Conselho Brasileiro de Oftalmologia Publicador: Conselho Brasileiro de Oftalmologia
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2014 Português
Relevância na Pesquisa
46%
The purpose of this review was to analyze and describe simulation methods for practical learning and training of the ophthalmoscopy exam and to organize them into specific topics relative to each principle of operation, while evaluating their preliminary results. A critical review of articles that described and evaluated simulated models for ophthalmoscopy published in the last ten years (2004-2014) was performed. One hundred articles about ophthalmology and simulation were found in national and international periodicals, but only a few discussed the examination of the posterior pole of the eye. For this study, 25 articles were considered; those articles described simulation methods, general concepts, and its actual use in ophthalmoscopy. There were many different simulation methods described, but only few articles proved their efficacy or performed a comparison between models. Review of this topic may give information for the critical analysis of the simulation devices and ideas for the development of new ones.

Analytical and simulation methods for estimating the potential predictive ability of genetic profiling: a comparison of methods and results

Kundu, Suman; Karssen, Lennart C; Janssens, A Cecile JW
Fonte: Nature Publishing Group Publicador: Nature Publishing Group
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
46%
Various modeling methods have been proposed to estimate the potential predictive ability of polygenic risk variants that predispose to various common diseases. However, it is unknown whether differences between them affect their conclusions on predictive ability. We reviewed input parameters, assumptions and output of the five most common methods and compared their estimates of the area under the receiver operating characteristic (ROC) curve (AUC) using hypothetical data representing effect sizes and frequencies of genetic variants, population disease risk and number of variants. To assess the accuracy of the estimated AUCs, we aimed to reproduce the AUCs of published empirical studies. All methods assumed that the combined effect of genetic variants on disease risk followed a multiplicative risk model of independent genetic effects, but they either assumed per allele, per genotype or dominant/recessive effects for the genetic variants. Modeling strategy and input parameters differed. Methods used simulation analysis or analytical formulas with effect sizes quantified by odds ratios (ORs) or relative risks. Estimated AUC values were similar for lower ORs (<1.2). When AUCs were larger (>0.7) due to variants with strong effects, differences in estimated AUCs between methods increased. The simulation methods accurately reproduced the AUC values of empirical studies...

A comparative study of truck cycle time prediction methods in open-pit mining

Chanda, E.; Gardiner, S.
Fonte: Emerald Group Publishing Ltd Publicador: Emerald Group Publishing Ltd
Tipo: Artigo de Revista Científica
Publicado em //2010 Português
Relevância na Pesquisa
45.96%
Purpose – The purpose of this paper is to compare the predictive capability of three methods of truck cycle time estimation in open-pit mining: computer simulation, artificial neural networks (NNs), and multiple regressions (MRs). The aim is to determine the best method. The most common method currently used is computer simulation. Design/methodology/approach – Truck cycle times at a large open pit mine are estimated using computer simulation, artificial NNs, and MRs. The estimated cycle times by each method are in turn compared to the actual cycle times recorded by a computerized mine monitoring system at the same mine. The errors associated with each method relative to the actual cycle times are documented and form the basis for comparing the three methods. Findings – The paper clearly indicates that computer simulation methods used in predicting truck cycle times in open-pit mining underestimate and overestimate the results for short and long hauls, respectively. It appears that both NN and regression models are superior in their predictive abilities compared to computer simulations. Research limitations/implications – The cycle time prediction models developed apply to a specific mine site and one has to be careful not to directly apply these models to other operations. Practical implications – The paper describes the implementation of regression and NN modelling. An opportunity exists for mines to utilise the large volumes of data generated to predict truck haulage cycle times more accurately and hence...

Simulation of correlated variables: a comparison of approaches with a case study from the Yandi Channel iron deposit.

De-Vitry, Chris
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2010 Português
Relevância na Pesquisa
46.06%
Conditional Simulation of correlated assay variables is a subject of significant recent and current development. The objective of this thesis is to evaluate the available approaches in this area for mining applications. BHP Billiton’s (BHPB) Yandi Channel Iron Deposit (Yandi CID) in Western Australia was selected for these tests. The Yandi CID is 150 km by road North of the town of Newman in the Pilbara region. This channel iron deposit (CID) infills the meandering tertiary palaeochannels of Marillana Creek, which are 450m - 750m wide and approximately 100m deep in the centre. The deposits outcrop as a series of low mesas beside the present day creeks and were divided into three areas (Western, Central and Eastern) within which individual mesas are numbered. A North-South trending part of the channel (mesas C4, and part of C5) is the focus of this study. Drilling of the C4 and C5 mesas is on grids varying from 25m x 50m to 100m x 100m. Although the Yandi CID is mined for iron ore, the concentrations of the contaminants Al₂O₃, SiO₂ and P₂O₅ are economically critical. The loss on ignition (LOI), while not strictly speaking a contaminant, is also an important product characteristic for iron ore customers. The correlations between the assay variables and their relative abundances vary from sample to sample. For resource modelling...

A simulation tool for the duties of computer specialist non-commissioned officers on a Turkish Air Force Base

Camur, Serhat.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xx, 75 p. : col. ill. ;
Português
Relevância na Pesquisa
55.85%
Approved for public release, distribution unlimited; Staff assignment is one of the major problems in many lines of business. Knowing that the human being is one of the most expensive and demanding resources, efficient personnel employing becomes significant. Simulation techniques can help accomplish effective staff assignments. The aim of this thesis is to create a simulation tool by using a prototypical model of the computer system specialist non-commissioned officers' jobs on a Turkish Air Force Base, and to identify the effective factors on computer specialist shortage problem. This aim is accomplished by using event graph and discrete event simulation techniques for modeling purposes, and Simkit and Viskit for implementing the created model into simulation code. After evaluating the simulation results from an experiment involving fifteen input factors, it was concluded that the staff shortage problem can be addressed by using this study after updating the parameters used in the model to reflect the most recent distributions. On the other hand, increasing the number of personnel is not the only solution for addressing the problem. There are some other ways suggested by the study to improve the measure of effectiveness values...

Airlift operations modeling using Discrete Event Simulation (DES)

Foong, Yew Chong
Fonte: Monterey, California; Naval Postgraduate School Publicador: Monterey, California; Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xviii, 149 p. : ill.
Português
Relevância na Pesquisa
55.78%
The recently completed integrated project by the Systems Engineering and Analysis Cohort 15 at NPS has devised a regional Maritime Theater Security Force to conduct Phase Zero operations based on a tasking from OPNAV N8F. The force's airlift capability was identified as a critical component in the accomplishment of the missions and the required force structure was determined using a mix of mathematical and linear optimization modeling. The goal for this thesis is to develop a stochastic model using Discrete Event Simulation (DES) that can be employed to analyze the devised force structure's airlift operation performance at the operational/tactical level to augment the analysis work performed under that project. The intent is to provide a more complete solution for any stakeholders who want to take the project further to the next level. The resulting model demonstrates the ability to measure the airlift operation performance and provide insights into the operation workflow efficiency. The experiments conducted support the earlier findings on the devised Phase Zero force's ability to meet the most stringent mission requirements but suggested a different maximum airlift capability.; Singapore Defence Science and Technology Agency author (civilian).

Simulation-Based Finite and Large Sample Tests in Multivariate Regressions.

DUFOUR, Jean-Marie; KHALAF, Lynda
Fonte: Université de Montréal Publicador: Université de Montréal
Tipo: Artigo de Revista Científica Formato: 762828 bytes; application/pdf
Português
Relevância na Pesquisa
46.04%
In the context of multivariate linear regression (MLR) models, it is well known that commonly employed asymptotic test criteria are seriously biased towards overrejection. In this paper, we propose a general method for constructing exact tests of possibly nonlinear hypotheses on the coefficients of MLR systems. For the case of uniform linear hypotheses, we present exact distributional invariance results concerning several standard test criteria. These include Wilks' likelihood ratio (LR) criterion as well as trace and maximum root criteria. The normality assumption is not necessary for most of the results to hold. Implications for inference are two-fold. First, invariance to nuisance parameters entails that the technique of Monte Carlo tests can be applied on all these statistics to obtain exact tests of uniform linear hypotheses. Second, the invariance property of the latter statistic is exploited to derive general nuisance-parameter-free bounds on the distribution of the LR statistic for arbitrary hypotheses. Even though it may be difficult to compute these bounds analytically, they can easily be simulated, hence yielding exact bounds Monte Carlo tests. Illustrative simulation experiments show that the bounds are sufficiently tight to provide conclusive results with a high probability. Our findings illustrate the value of the bounds as a tool to be used in conjunction with more traditional simulation-based test methods (e.g....

Finite-Sample Simulation-Based Inference in VAR Models with Applications to Order Selection and Causality Testing

DUFOUR, Jean-Marie; JOUINI, Tarek
Fonte: Université de Montréal Publicador: Université de Montréal
Tipo: Artigo de Revista Científica Formato: 267980 bytes; application/pdf
Português
Relevância na Pesquisa
45.99%
Statistical tests in vector autoregressive (VAR) models are typically based on large-sample approximations, involving the use of asymptotic distributions or bootstrap techniques. After documenting that such methods can be very misleading even with fairly large samples, especially when the number of lags or the number of equations is not small, we propose a general simulation-based technique that allows one to control completely the level of tests in parametric VAR models. In particular, we show that maximized Monte Carlo tests [Dufour (2002)] can provide provably exact tests for such models, whether they are stationary or integrated. Applications to order selection and causality testing are considered as special cases. The technique developed is applied to quarterly and monthly VAR models of the U.S. economy, comprising income, money, interest rates and prices, over the period 1965-1996.

A Multi-Code Analysis Toolkit for Astrophysical Simulation Data

Turk, Matthew J.; Smith, Britton D.; Oishi, Jeffrey S.; Skory, Stephen; Skillman, Samuel W.; Abel, Tom; Norman, Michael L.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 15/11/2010 Português
Relevância na Pesquisa
45.93%
The analysis of complex multiphysics astrophysical simulations presents a unique and rapidly growing set of challenges: reproducibility, parallelization, and vast increases in data size and complexity chief among them. In order to meet these challenges, and in order to open up new avenues for collaboration between users of multiple simulation platforms, we present yt (available at http://yt.enzotools.org/), an open source, community-developed astrophysical analysis and visualization toolkit. Analysis and visualization with yt are oriented around physically relevant quantities rather than quantities native to astrophysical simulation codes. While originally designed for handling Enzo's structure adaptive mesh refinement (AMR) data, yt has been extended to work with several different simulation methods and simulation codes including Orion, RAMSES, and FLASH. We report on its methods for reading, handling, and visualizing data, including projections, multivariate volume rendering, multi-dimensional histograms, halo finding, light cone generation and topologically-connected isocontour identification. Furthermore, we discuss the underlying algorithms yt uses for processing and visualizing data, and its mechanisms for parallelization of analysis tasks.; Comment: 18 pages...

Stretching single RNAs: exact numerical and stochastic simulation methods

Liu, Fei; Zhu, Bi-hui; Ou-Yang, Zhong-can
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Publicado em 02/11/2004 Português
Relevância na Pesquisa
55.86%
Exact numerical methods and stochastic simulation methods are developed to study the force stretching single RNA issue on the secondary structure level in equilibrium. By computing the force-extension curves on the constant force and the constant extension ensembles, we find the two independent methods agree with each other quite well. To show the precision of our methods in predicting unfolding experiments, the unfolding forces of different RNA molecules under different experimental conditions are calculated. We find that the ionic corrections on the RNA free energies alone might not account for the apparent differences between the theoretical calculations and the experimental data; an ionic correction to the persistent length of single-stranded RNA should be necessary.; Comment: 12 pages, 4 figures, and 1 table

Exact hybrid particle/population simulation of rule-based models of biochemical systems

Hogg, Justin S.; Harris, Leonard A.; Stover, Lori J.; Nair, Niketh S.; Faeder, James R.
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
Português
Relevância na Pesquisa
45.93%
Detailed modeling and simulation of biochemical systems is complicated by the problem of combinatorial complexity, an explosion in the number of species and reactions due to myriad protein-protein interactions and post-translational modifications. Rule-based modeling overcomes this problem by representing molecules as structured objects and encoding their interactions as pattern-based rules. This greatly simplifies the process of model specification, avoiding the tedious and error prone task of manually enumerating all species and reactions that can potentially exist in a system. From a simulation perspective, rule-based models can be expanded algorithmically into fully-enumerated reaction networks and simulated using a variety of network-based simulation methods, provided that the network is not exceedingly large. Alternatively, rule-based models can be simulated directly using particle-based kinetic Monte Carlo methods. This "network-free" approach produces exact stochastic trajectories with a computational cost that is independent of network size. However, memory and run time costs increase with the number of particles, limiting the size of system that can be feasibly simulated. Here, we present a hybrid particle/population simulation method that combines the best attributes of both the network-based and network-free approaches. The method takes as input a rule-based model and a user-specified subset of species to treat as population variables rather than as particles. The model is then transformed by a process of "partial network expansion" into a dynamically equivalent form that can be simulated using a population-adapted network-free simulator. The transformation method has been implemented within the open-source rule-based modeling platform BioNetGen...

Application of Stochastic Simulation Methods to System Identification

Muto, Matthew
Fonte: Earthquake Engineering Research Laboratory Publicador: Earthquake Engineering Research Laboratory
Tipo: Report or Paper; PeerReviewed Formato: application/pdf
Publicado em 21/05/2007 Português
Relevância na Pesquisa
46.03%
Reliable predictive models for the response of structures are a necessity for many branches of earthquake engineering, such as design, structural control, and structural health monitoring. However, the process of choosing an appropriate class of models to describe a system, known as model-class selection, and identifying the specific predictive model based on available data, known as system identification, is difficult. Variability in material properties, complex constitutive behavior, uncertainty in the excitations caused by earthquakes, and limited constraining information (relatively few channels of data, compared to the number of parameters needed for a useful predictive model) make system identification an ill-conditioned problem. In addition, model-class selection is not trivial, as it involves balancing predictive power with simplicity. These problems of system identification and model-class selection may be addressed using a Bayesian probabilistic framework that provides a rational, transparent method for combining prior knowledge of a system with measured data and for choosing between competing model classes. The probabilistic framework also allows for explicit quantification of the uncertainties associated with modeling a system. The essential idea is to use probability logic and Bayes' Theorem to give a measure of plausibility for a model or class of models that is updated with available data. Similar approaches have been used in the field of system identification...

The Design, modeling and simulation of switching fabrics: For an ATM network switch

Molokov, Dmitriy
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
56.03%
The requirements of today's telecommunication systems to support high bandwidth and added flexibility brought about the expansion of (Asynchronous Transfer Mode) ATM as a new method of high-speed data transmission. Various analytical and simulation methods may be used to estimate the performance of ATM switches. Analytical methods considerably limit the range of parameters to be evaluated due to extensive formulae used and time consuming iterations. They are not as effective for large networks because of excessive computations that do not scale linearly with network size. One the other hand, simulation-based methods allow determining a bigger range of performance parameters in a shorter amount of time even for large networks. A simulation model, however, is more elaborate in terms of implementation. Instead of using formulae to obtain results, it has to operate software or hardware modules requiring a certain amount of effort to create. In this work simulation is accomplished by utilizing the ATM library - an object oriented software tool, which uses "software chips" for building ATM switches. The distinguishing feature of this approach is cut-through routing realized on the bit level abstraction treating ATM protocol data units, called cells...

Aircraft landing gear simulation and control

Ambalaparambil, Sanoopkumar
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
45.96%
The focus of this work is the development of a Multi-degree Of Freedom (MOF) model for simulation and control of the landing performances of the SAE Heavy Lift Airplane model built by the Aerodynamics design team of RIT. From dynamic considerations, the landing gear performance has two areas of interest: a) behavior during touchdown impact, and b) response to excitation induced by track roughness during taxi, take-off and later part of the landing runs. As the problem at hand is highly nonlinear and complex, initially a simplified 1-dof model of the same aircraft is derived and analyzed using Lagrange's equations and energy methods. After understanding the basic dynamics of the system, a more complex 3-dof model is derived considering the dynamics of the wheels of the landing gear. Analyses with and without the runway profile are carried out to study the effects of the input signals on the derived model. In order to achieve a controlled landing behavior of the aircraft, a linear damper or shock absorber is incorporated into the analysis and simulation, even though it is not available in the original prototype. The nonlinear models are linearized in Simulink and control system designs are performed on the linearized models using Root Locus techniques...

The Hotel management simulation/game: An Evaluation of game mechanics and learning outcomes

Dominguez, Angel E.
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
45.92%
Hospitality education, as a vocationally oriented field of study, must provide the student not only with theoretical concepts, but also with a series of skills that the student will use in the work place. These skills include problem analysis and decision making, team building, and the relationship of the hotel business variables (Occupancy, Profits and Guest Satisfaction). Simulation gaming techniques are thought to be very effective methods to develop these skills. In simulations participants imitate actions required on the job and are actively involved in the processes of learning and skills acquisition. The Hotel Management Simulation/Game is a simulation technique that has been successfully used in hospitality education and training. However its instructions and procedures (mechanics) have been perceived as unfriendly by participants. It was believed that the degree of understanding of the game mechanics would affect the learning process and the achievement of the game's instructional goals. To solve this problem, several changes of the game's mechanics have been introduced by the game administrators at Rochester Institute of Technology. The objective of the present study is to answer the following question: Does the Hotel Management Game's mechanics affect its learning outcomes (such as problem solving and decision making...

Avaliação da eficiência energética de edificações residenciais em fase de projeto : análise de desempenho térmico pelo método prescritivo e por simulação computacional aplicados a estudo de caso de projeto-tipo do Exército Brasileiro; Energy efficiency assessment of residential buildings in design phase : an analysis of thermal performance using prescriptive and computer simulation methods applied to a case study of a Brazilian Army's standard design

Marcus Vinicius de Paiva Rodrigues
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 26/08/2015 Português
Relevância na Pesquisa
55.86%
O presente estudo realiza a avaliação da eficiência energética de edificação residencial em fase de projeto, por meio da análise de conceitos de arquitetura bioclimática e desempenho térmico, segundo os métodos prescritivo e de simulação computacional. A avaliação pelo método prescritivo ampara-se nas normas brasileiras de desempenho térmico e regulamentos técnicos de eficiência energética de edificações do Programa Nacional de Conservação de Energia Elétrica ¿ Subprograma Edificações (PROCEL-Edifica), além dos códigos de obras do Exército Brasileiro, instituição cujo projeto-tipo de edifício residencial foi escolhido para o estudo de caso. A simulação computacional tem o Energy Plus como software de referência apesar de se valer de outros como Ecotect e Climate Consultant na medida das necessidades da pesquisa. Avalia-se o desempenho termoenergético da edificação a partir dos dados climáticos atuais do local de implantação, a cidade do Rio de Janeiro, e caracterizam-se as condições de um cenário climático futuro para o ano de 2020, por meio da extrapolação de dados permitida pelo software CCWorldWeatherGen. Pretende-se que a metodologia empregada e os resultados sejam aproveitados: i) no aprimoramento do projeto do estudo de caso...