Light pollution is a problem that affects both living creatures as well as the perception of the night sky. As artificial lighting becomes more affordable and energy efficient, more and more lights are being used, further increasing the light pollution produced by us humans where cities with larger populations experience the largest amount of light pollution. There is however a knowledge gap in the field of light pollution regarding the possibility of a relationship between sky view factor and the brightness of the night sky. This study attempts to reduce that knowledge gap. By using cameras to take photos in different locations, the brightness of the night sky can be compared and together with the sky view factor of each location in can be determined if there exist such a relationship. Based on the results of this study, trends suggesting that this relationship exists emerges, however not to the extent that any definite conclusions can be drawn without further studies.

Terrain Breakline Detection Using Sky-view factor Abstract The subject of this diploma thesis is to propose the procedure of detecting of terrain breaklines using Sky-view factor. The theoretical part of the diploma thesis first introduces the issue of terrain breaklines detection, which presents the methods known to date and Sky- view factor, which is the focal point of the proposed method. Implementation over real data takes place at four locations in the Czechia (Vítkovice, Hradiště, Strnady and Velenka). Data in the form of raster format is tested. At the end, the results of the proposed method and its verification using two selected methods of field edge detection are presented and evaluated. Achieved results point to Sky-view factor for terrain edge detection. Keywords: terrain breakline, digital terrain model, Sky-view factor, detection terrain breaklines methods

Terrain Breakline Detection Using Sky-view factor Abstract The subject of this diploma thesis is to propose the procedure of detecting of terrain breaklines using Sky-view factor. The theoretical part of the diploma thesis first introduces the issue of terrain breaklines detection, which presents the methods known to date and Sky- view factor, which is the focal point of the proposed method. Implementation over real data takes place at four locations in the Czechia (Vítkovice, Hradiště, Strnady and Velenka). Data in the form of raster format is tested. At the end, the results of the proposed method and its verification using two selected methods of field edge detection are presented and evaluated. Achieved results point to Sky-view factor for terrain edge detection. Keywords: terrain breakline, digital terrain model, Sky-view factor, detection terrain breaklines methods

Ett mycket högexploaterat förslag utformas där en egen identitet skapas åt Arenastaden i Växjö. Solens gång, bullerkällor, brandrisker, kulturhistoriska värden och många mål i kommunens visionsbild för Arenastaden väger in vid utformning av förslaget. Förslagets nya upplevelsevärden och andra kvalitéer analyseras med hjälp av en solstudie, bullerkällsundersökning och analysmetod av Kevin Lynch. Projektuppgiften är baserad på att en mycket hög exploatering drar ner på områdets upplevelsevärden. Då analysens resultat föll annorlunda erhölls ett annat resultat – metoden; att bygga på höjden besparar grönytor och de värden som mäts vid en Lynchanalys.

Submitted by Fabiana Benevenuto Faustini null (fab_bf@hotmail.com) on 2018-09-26T04:31:37Z No. of bitstreams: 1 DISSERTAÇAO FINAL_ULTIMA CORREÇÃO.pdf: 4446072 bytes, checksum: f8eb255af14f0286951d1f51ea8e76bb (MD5) / Approved for entry into archive by Lucilene Cordeiro da Silva Messias null (lubiblio@bauru.unesp.br) on 2018-09-26T16:43:56Z (GMT) No. of bitstreams: 1 faustini_fb_me_bauru.pdf: 4446072 bytes, checksum: f8eb255af14f0286951d1f51ea8e76bb (MD5) / Made available in DSpace on 2018-09-26T16:43:56Z (GMT). No. of bitstreams: 1 faustini_fb_me_bauru.pdf: 4446072 bytes, checksum: f8eb255af14f0286951d1f51ea8e76bb (MD5) Previous issue date: 2017-10-20 / A sensação de conforto térmico experimentada pelos usuários de espaços abertos de lazer, como praças, parques, bosques, entre outros, pode afetar positiva ou negativamente a quantidade de usuários, atividades desenvolvidas, além do tempo de permanência das pessoas. No entanto, essa relação entre conforto térmico e tempo de permanência ainda é pouco estudada, fato que justifica a importância desta pesquisa, que busca investigar essa relação em um espaço aberto de lazer. O estudo foi desenvolvido em um parque Zoológico, na cidade de Bauru-SP, através da coleta de dados objetivos (medições microclimáticas e quantificação de pessoas), e subjetivos (aplicação de questionários) em dois subespaços com mesma atratividade (área de felinos) e diferentes Fatores de Visão do Céu (FVC), em duas condições de tempo, quente e ameno. Esses dados permitiram identificar os Votos de Sensação Real (ASV), calcular o índice PET (Temperatura Equivalente Fisiológica), verificar a preferência térmica dos usuários e registrar o tempo de permanência em cada subespaço, nas condições de tempo analisadas. Os resultados evidenciam a estreita relação entre FVC e o tempo de permanência em determinado espaço. Destaca-se ainda: 1. Maior frequência de sensação térmica de conforto dos usuários na área com maior sombreamento, nas condições de tempo quente, e frequências de sensação térmica equivalentes nos dois subespaços em condições de tempo ameno. 2. Nas condições de tempo quente, permanência de curta duração dos usuários nas áreas de alta incidência de radiação solar direta e faixa de neutralidade do índice PET variada em relação aos dois subespaços. 3. Em situações de desconforto por calor, o tempo de permanência é reduzido em função do FVC, e a atração passa a ser um aspecto secundário, ou seja, o maior interesse se torna a busca por um local mais confortável. / The sensation of thermal comfort experienced by the users of leisure open places, such as squares, parks, woods, among others, may positively or negatively affect the amount of users, developed activities, and permanency time of people. However, this relation between thermal comfort and exposure time is still poorly studied, fact that justifies the importancy of this research, that seeks to investigate this relation in an leisure open place. The study was developed in a Zoo Park, in Bauru-SP, trough objective data collect (microclimatic measurements and quantification of people), and subjective data collect (questionnaires application) in two subspaces with the same attractiveness (feline area) and different Sky View Factors (SVF), under two weather conditions, hot and mild. These data allowed to indentify the Actual Sensation Votes (ASV), to calculate the PET index (Physiological Equivalent Temperature), verify the thermal preference of the users and record the exposure time in each subspace, under the microclimatic conditions analyzed. The results show the narrow relation between SVF and the exposure time in a given space. It also shows: 1. Higher frequency of thermal sensation of comfort of the users in the area with greater shading, in hot weather conditions, and equivalent thermal sensation frequencies in the two subspaces in mild weather conditions. 2. In hot weather conditions, permanency of short duration of the users in the areas of high incidence of direct solar radiation and neutrality range of the PET index varied in relation to the two subspaces. 3. In situations of heat discomfort, the permanecy time is reduced in function of the SVF, and the attraction turns into a secondary aspect, that is, the greater interest becomes the search for a more comfortable place.

Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2019-03-18T17:37:56Z No. of bitstreams: 1 MARCELO REZENDE CAL?A SOEIRA.pdf: 10669454 bytes, checksum: 0c817cd4715977e2f4677644509e8516 (MD5) / Made available in DSpace on 2019-03-18T17:37:56Z (GMT). No. of bitstreams: 1 MARCELO REZENDE CAL?A SOEIRA.pdf: 10669454 bytes, checksum: 0c817cd4715977e2f4677644509e8516 (MD5) Previous issue date: 2019-01-28 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The objective of this research was to estimate and compare the Sky View Factor (SVF) and Urban Heat Island Intensity (UHII) correlation across different Local Climate Zones (LCZs) situated in the city of Campinas, S?o Paulo, Brazil. The SVF consists of an non dimensional parameter which describes the ratio of visible sky from a given point in space. In the urban environment, SVF values are strongly related to buildings density and height. Also strongly related to the densification and verticalization of the urban tissue is the Urban Heat Island phenomenon, which is characterized by the elevation of air temperature in urban environments as a result of its impact on the surface energy balance. For this reason, research has been conducted in many countries to investigate the correlation between SVF and the UHII. To evaluate the effects of urban tissue composition on these correlations, however, systematic methods for detecting and reporting such composition are required. Employing the Local Climate Zones method, which classifies urban areas as climate zones according to their structural typology and surface cover, this research evaluated SVF-UHII correlation variations across different built up areas of the same city. Combining mobile measurements and stationary monitoring devices a map of the nocturnal UHII at the research site was obtained. According to seven parameters (H/W ratio; SVF; Built area; Permeable area; Impermeable area; Height of roughness elements; And roughness class), obtained by geoprocessing, eleven LCZs were identified at the site. Nocturnal UHII linear regressions were calculated for SVF values (point and 100m radius average values were used) at eight LCZs classes. At compact low, low-high, mid-low and high-mid rise LCZs (3, 31, 23 and 12), with SVF values between 0,20 and 0,45, the approximate air temperature increase ranged from 1,5 up to 2,2?C. At compact low and mid-low rise LCZs (3 and 23), with SVF values between 0,45 and 0,7, the approximate air temperature increase ranged from 0,7 up to 1,2?C. For sparsely built low rise LCZs (6), with SVF between 0,60 and 0,90, the approximate air temperature variation ranged from - 0,2 up to 0,0?C. From these results it was concluded that the correlation between SVF and UHII is influenced by the morphological and superficial composition of the urban tissue. Hence, to effectively utilize SVF in UHI mitigation strategies, these influences should be considered. / A presente pesquisa teve como objetivo estimar e comparar as correla??es entre o FVC e a varia??o da temperatura do ar encontradas em diferentes zonas clim?ticas situadas em um recorte da cidade de Campinas- SP. O fator de vis?o do c?u (FVC) ? um par?metro adimensional utilizado para descrever a propor??o de c?u vis?vel, em um determinado local, a partir do n?vel do solo. No ambiente urbano, seu valor est? fortemente relacionado ao grau de compacta??o e verticaliza??o da malha construtiva. Outro fen?meno relacionado ao grau de compacta??o e verticaliza??o da malha urbana ? o fen?meno da Ilha de Calor Urbana (ICU), caracterizado pela reten??o do calor absorvido no ambiente constru?do. Por este motivo, ? grande o n?mero de pesquisas que estudam a correla??o entre o FVC e o fen?meno da Ilha de Calor Urbana em diversas cidades do mundo. Atrav?s de m?todos sistem?ticos para o reconhecimento e documenta??o de heterogeneidades da malha urbana, como o m?todo das Zonas Clim?ticas Locais (LCZs), que classifica ?reas urbanas em zonas clim?ticas locais de acordo com sua tipologia construtiva e cobertura de superf?cies, tornou-se poss?vel avaliar a varia??o desta correla??o em um contexto intramunicipal. Atrav?s de campanhas de medi??es m?veis e de pontos fixos de monitoramento, a intensidade da ilha de calor urbana na ?rea de estudo foi avaliada. A ?rea de estudo foi classificada em onze LCZs de acordo com sete par?metros urban?sticos obtidos por geoprocessamento (rela??o altura-largura, FVC, ?rea edificada, ?rea imperme?vel, ?rea perme?vel, altura m?dia dos elementos de rugosidade e classe de rugosidade). Regress?es lineares foram estabelecidas entre a intensidade da ICU ?s 21:00 e valores de FVC (pontuais e m?dios para um raio de 100m) em ?reas de an?lise correspondentes a oito LCZs. Para valores de FVC entre 0,20 e 0,45, a eleva??o aproximada da temperatura do ar em LCZs de arranjo compacto e verticaliza??o baixa a m?dia-alta ? 1,5 a 2,2 ?C; para valores de FVC entre 0,45 e 0,7 em LCZs de arranjo compacto e verticaliza??o baixa e m?dia-baixa, a eleva??o aproximada da temperatura do ar foi de 0,7 a 1,5 ?C; e para valores de FVC entre 0,60 e 0,90 em LCZs de arranjo esparso e verticaliza??o baixa, a varia??o aproximada da temperatura do ar foi de 0,0 a -0,2 ?C. Assim, conclui-se que a influ?ncia do FVC na eleva??o da temperatura do ar em ?reas urbanizadas varia conforme a composi??o morfol?gica e superficial do tecido urbano. Para que o FVC seja utilizado efetivamente em estrat?gias de mitiga??o da ICU, essa rela??o deve ser considerada.