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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Urbis Terram - Designing and Implementing a Procedural City Generation Tool for Unity3D Game Engine

Najahi, Yakin 27 April 2017 (has links)
The use of procedural content generation is becoming more and more popular in the video game industry. With games such as Minecraft or No Man’s Sky we have seen the potential of PCG in video game creation but also its challenges. In fact, while the processing power and memory capabilities of our machines are unceasingly growing, human capability for content creation doesn’t seem to be able to follow the same pace. Game developers had then to come up with several techniques and methods that will help them generate lots of content for their games while still keeping a certain level of control on the output. Urbis Terram is a procedural city generation tool for Unity3D that allows the creation of complete cities to be used in video games or simulations made with this engine. The goal of this thesis is to tackle the technical challenge of designing and implementing a PCG tool that will help game developers to quickly generate terrains, road networks and allotment spaces for buildings and other urban areas. The goal is to have a unique complete city generation tool that can enable quick game design iterations and can be used to create complex virtual worlds.
2

AVALIAÇÃO DO RUÍDO DE TRÁFEGO VEICULAR EM ÁREA CENTRAL DE CHAPECÓ SC / EVALUATION OF VEHICULAR TRAFFIC NOISE IN CENTRAL ZONE CHAPECÓ SC

Balzan, Katiane Laura 07 December 2011 (has links)
The development of cities and population growth have led, among other urban problems, the increase in sound pressure levels of environmental noise. With the overcrowding of cities, the roads start to host large flows of vehicles, among other sound sources. These factors, coupled with the layout and massing of buildings, make the road a polluter responsible for sound pressure levels highly detrimental to health. In Brazil, noise has not been considered by urban planning policies. This study aims to assess the current conditions of urban noise pollution due to vehicular traffic on the downtown of Chapecó - SC. To this end, we sought to map the sound pressure levels, compare them to the municipal and federal laws relating to urban noise, to relate the sound descriptors of the traffic noise with the volume of traffic, to relate the geometry of the built environment with levels of sound pressure and compare the results with the rates proposed by the urban plan of the municipality. To conduct the survey data, was defined a mesh grid from which were located 14 measuring points. Data collection was performed at peak times and these data have been divided into acoustic quantities, geometrical quantities, quantities of traffic and meteorological quantities. The sound pressure levels collected from the study area had higher than those recommended by national standards at all times and points of measurement. From the linear regression analysis between the sound descriptors and flow of vehicular traffic, it was realized that the LAeq is not sufficient to explain the vehicular noise, because the variation of the LAeq is influenced not only by the variation in the number of vehicles, but also by the features the built environment of the road. The variation of LA90 and LA50 sound descriptors showed better correlation with the variation of the flow of vehicular traffic. The urbanistic indices proposed by the plan of the municipality stimulate the future shape of urban canyons, which can aggravate the problems related to noise from vehicular traffic in the local community. / O desenvolvimento das cidades e o crescimento demográfico têm acarretado, entre outros problemas urbanos, o aumento dos níveis de pressão sonora do ruído ambiental. Com a aglomeração dos centros urbanos, as vias passam a abrigar grandes fluxos de veículos, entre outras fontes sonoras. Esses fatores, aliados à disposição e à volumetria das edificações, tornam o tráfego rodoviário um poluidor acústico responsável por níveis de pressão sonora altamente prejudiciais à saúde. No Brasil, o ruído não tem sido considerado pelas políticas de planejamento urbano. O presente estudo tem por objetivo avaliar as condições atuais de poluição sonora urbana devido ao tráfego veicular em área central do município de Chapecó SC. Para tanto, buscou-se mapear os níveis de pressão sonora, comparar os mesmos à legislação municipal e federal referente ao ruído urbano, relacionar os descritores sonoros do ruído de tráfego com o volume de tráfego, relacionar a geometria do ambiente construído com os níveis de pressão sonora e comparar os resultados com os índices urbanísticos propostos pelo plano diretor do município. Para realização do levantamento de dados, foi definida uma malha quadriculada a partir da qual foram localizados 14 pontos de medição. O estudo delimitou a coleta de dados aos horários de pico e estes dados apresentam-se divididos em grandezas acústicas, grandezas geométricas, grandezas de tráfego e grandezas meteorológicas. Os níveis de pressão sonora coletados da área de estudo se apresentaram superiores aos preconizados pelas normativas nacionais em todos os horários e pontos de medição. A partir das análises de regressão linear entre os descritores sonoros e o fluxo de tráfego de veículos, percebeu-se que o LAeq não é suficiente para explicar o ruído veicular, uma vez que a variação do LAeq sofre influência não só da variação no número de veículos, como também das características do ambiente construído da via. A variação dos descritores sonoros LA90 e LA50 demonstraram melhor correlação com a variação do fluxo de tráfego veicular. Os índices urbanísticos propostos pelo plano diretor do município estimulam a configuração futura de cânions urbanos, o que pode agravar os problemas relacionados ao ruído de tráfego veicular enfrentados pela comunidade local.

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