cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.20026804
title: Analysis of trade and service in enterprises of the "Minha Casa, Minha Vida" Program (PMCMV): case study of Vista Bela Residential - Londrina, PR

description: Abstract This study introduces the issue of the emergence of retail businesses and services to the discussion about the housing offered to low-income populations (zero to three minimum wages). The main aim of this research project is to understand the socio-spatial role of the tertiary sector in the projects of the Minha Casa, Minha Vida program (MCMV), using a case study carried out at the Residential Vista Bela project, which has 2712 units, in Londrina - PR. The data collection tools were on-site monitoring, from October 2012 to July 2014, and the application of two (2) questionnaires. The first questionnaire was distributed to 51 traders and the second questionnaire, to 188 local residents. The results showed a 300% increase in the number of units that added space for commerce in the three years of existence of the housing project. These results provided an understanding both of the formation of offer and demand in the Residential Vista Bela market of goods, and of the income generation strategy. This study contributes to potential reassessments of housing policy and encourages discussion about the tertiary sector in MCMV projects, based on an understanding of the trade and service areas as one of the components of a city's structure and organization, as a need of the residents that is beyond simple "shelter".
DOI: 10.6084/m9.figshare.20026804.v1
title: Analysis of trade and service in enterprises of the "Minha Casa, Minha Vida" Program (PMCMV): case study of Vista Bela Residential - Londrina, PR

description: Abstract This study introduces the issue of the emergence of retail businesses and services to the discussion about the housing offered to low-income populations (zero to three minimum wages). The main aim of this research project is to understand the socio-spatial role of the tertiary sector in the projects of the Minha Casa, Minha Vida program (MCMV), using a case study carried out at the Residential Vista Bela project, which has 2712 units, in Londrina - PR. The data collection tools were on-site monitoring, from October 2012 to July 2014, and the application of two (2) questionnaires. The first questionnaire was distributed to 51 traders and the second questionnaire, to 188 local residents. The results showed a 300% increase in the number of units that added space for commerce in the three years of existence of the housing project. These results provided an understanding both of the formation of offer and demand in the Residential Vista Bela market of goods, and of the income generation strategy. This study contributes to potential reassessments of housing policy and encourages discussion about the tertiary sector in MCMV projects, based on an understanding of the trade and service areas as one of the components of a city's structure and organization, as a need of the residents that is beyond simple "shelter".
DOI: 10.6084/m9.figshare.20026805
title: Sound perception and acoustic comfort in urban spaces in the city of Belo Horizonte, MG

description: Abstract This aim of this paper is to present and analyse the responses of users of urban open spaces regarding perception of loudness and acoustic comfort evaluation, based on data collected during the year of 2013 in two squares in the city of Belo Horizonte, state of Minas Gerais, Brazil. During field surveys, acoustic data were measured simultaneously with the application of questionnaires, which were used to collect subjective and individual variables. The LAeq, T index was used for the characterisation of the acoustic environment. The results show that, under the same acoustic conditions, regarding both the perception of loudness and the evaluation of acoustic comfort, individuals tend to be more tolerant in the square where the ambience and the thermal comfort conditions were better. As for the perception of loudness, the ranges defined in this study were: Low LAeq &lt; 35 dB (A); Normal 36 &lt; LAeq &lt; 67dB (A); High LAeq &gt; 68 dB (A). Regarding the evaluation of acoustic comfort, the ranges established were: Comfortable, LAeq &lt; 67 dB (A); and Uncomfortable, LAeq &gt; 68 dB (A). We hope that these results will contribute to a better understanding of the issues related to acoustic comfort in urban spaces.
DOI: 10.6084/m9.figshare.20026805.v1
title: Sound perception and acoustic comfort in urban spaces in the city of Belo Horizonte, MG

description: Abstract This aim of this paper is to present and analyse the responses of users of urban open spaces regarding perception of loudness and acoustic comfort evaluation, based on data collected during the year of 2013 in two squares in the city of Belo Horizonte, state of Minas Gerais, Brazil. During field surveys, acoustic data were measured simultaneously with the application of questionnaires, which were used to collect subjective and individual variables. The LAeq, T index was used for the characterisation of the acoustic environment. The results show that, under the same acoustic conditions, regarding both the perception of loudness and the evaluation of acoustic comfort, individuals tend to be more tolerant in the square where the ambience and the thermal comfort conditions were better. As for the perception of loudness, the ranges defined in this study were: Low LAeq &lt; 35 dB (A); Normal 36 &lt; LAeq &lt; 67dB (A); High LAeq &gt; 68 dB (A). Regarding the evaluation of acoustic comfort, the ranges established were: Comfortable, LAeq &lt; 67 dB (A); and Uncomfortable, LAeq &gt; 68 dB (A). We hope that these results will contribute to a better understanding of the issues related to acoustic comfort in urban spaces.
DOI: 10.6084/m9.figshare.20026807.v1
title: Lighting preferences in individual offices

description: Abstract Workplaces with good daylighting offer visual comfort to users, give them a series of physiological and psychological benefits and allow good performance of visual activities, besides saving energy. However, this solution is not always adopted: lighting type preferences involve many variables besides the availability of daylight. This paper explores a case study through the analysis of questionnaire answers and computer simulations of a series of metrics related to quality of lighting with the aim of finding explanations for the lighting preferences of individual office users. The results show that, although the offices present good daylighting conditions and no glare potential, and users are satisfied with daylighting, these parameters are not sufficient to explain the predominant lighting preferences. The findings have also shown that there is no consensus about which parameters potentially cause visual comfort, while the parameters that cause discomfort are clearly identified. In addition, in this study, 49% of the preference for mixed lighting (daylight plus electrical light) can be explained by the fact that mixed lighting produces better modeling than daylighting alone.
DOI: 10.6084/m9.figshare.20026807
title: Lighting preferences in individual offices

description: Abstract Workplaces with good daylighting offer visual comfort to users, give them a series of physiological and psychological benefits and allow good performance of visual activities, besides saving energy. However, this solution is not always adopted: lighting type preferences involve many variables besides the availability of daylight. This paper explores a case study through the analysis of questionnaire answers and computer simulations of a series of metrics related to quality of lighting with the aim of finding explanations for the lighting preferences of individual office users. The results show that, although the offices present good daylighting conditions and no glare potential, and users are satisfied with daylighting, these parameters are not sufficient to explain the predominant lighting preferences. The findings have also shown that there is no consensus about which parameters potentially cause visual comfort, while the parameters that cause discomfort are clearly identified. In addition, in this study, 49% of the preference for mixed lighting (daylight plus electrical light) can be explained by the fact that mixed lighting produces better modeling than daylighting alone.
DOI: 10.6084/m9.figshare.20026808.v1
title: Methodological sequence to predict daylighting and its implications for the energy performance evaluation of buildings

description: Abstract The objective of this study was to propose a simplified methodology, integrating the use of artificial neural networks (ANN) with daylighting zoning, with the aim of predicting potential energy savings resulting from the use of daylight in non-residential buildings. The approach used in this study was metamodeling, and the networks were trained based on results obtained through integrated computer energy simulation. The Latin Hypercube sampling technique was used to generate the input data that was parameterized trough the Grasshopper plug-in and simulated trough the DIVA plug-in for the Rhinoceros software. For the application of the method an ANN was used, where the output parameter was Lighting Power Density in Use, combined with dynamic daylighting zones that consider the weather dynamics, weighted by area. This paper discusses the relationship between the methodological sequence approach, which presented errors below 5, and the RTQ-C and daylighting reference index. The overall conclusion was that the simplified method has potential to be replicated and used because of its accuracy, speed and workability. With regard to the method's application in regulatory tools, it is important that minimum daylighting performance is carefully evaluated due to its significant impact on the energy consumption of buildings.
DOI: 10.6084/m9.figshare.20026808
title: Methodological sequence to predict daylighting and its implications for the energy performance evaluation of buildings

description: Abstract The objective of this study was to propose a simplified methodology, integrating the use of artificial neural networks (ANN) with daylighting zoning, with the aim of predicting potential energy savings resulting from the use of daylight in non-residential buildings. The approach used in this study was metamodeling, and the networks were trained based on results obtained through integrated computer energy simulation. The Latin Hypercube sampling technique was used to generate the input data that was parameterized trough the Grasshopper plug-in and simulated trough the DIVA plug-in for the Rhinoceros software. For the application of the method an ANN was used, where the output parameter was Lighting Power Density in Use, combined with dynamic daylighting zones that consider the weather dynamics, weighted by area. This paper discusses the relationship between the methodological sequence approach, which presented errors below 5, and the RTQ-C and daylighting reference index. The overall conclusion was that the simplified method has potential to be replicated and used because of its accuracy, speed and workability. With regard to the method's application in regulatory tools, it is important that minimum daylighting performance is carefully evaluated due to its significant impact on the energy consumption of buildings.
DOI: 10.6084/m9.figshare.20026810
title: The role of clothing in thermal comfort: how people dress in a temperate and humid climate in Brazil

description: Abstract Thermal insulation from clothing is one of the most important input variables used to predict the thermal comfort of a building's occupants. This paper investigates the clothing pattern in buildings with different configurations located in a temperate and humid climate in Brazil. Occupants of two kinds of buildings (three offices and two university classrooms) assessed their thermal environment through 'right-here-right-now' questionnaires, while at the same time indoor climatic measurements were carried out in situ (air temperature and radiant temperature, air speed and humidity). A total of 5,036 votes from 1,161 occupants were collected. Results suggest that the clothing values adopted by occupants inside buildings were influenced by: 1) climate and seasons of the year; 2) different configurations and indoor thermal conditions; and 3) occupants' age and gender. Significant intergenerational and gender differences were found, which might be explained by differences in metabolic rates and fashion. The results also indicate that there is a great opportunity to exceed the clothing interval of the thermal comfort zones proposed by international standards such as ASHRAE 55 (2013) - 0.5 to 1.0 clo - and thereby save energy from cooling and heating systems, without compromising the occupants' indoor thermal comfort.
DOI: 10.6084/m9.figshare.20026810.v1
title: The role of clothing in thermal comfort: how people dress in a temperate and humid climate in Brazil

description: Abstract Thermal insulation from clothing is one of the most important input variables used to predict the thermal comfort of a building's occupants. This paper investigates the clothing pattern in buildings with different configurations located in a temperate and humid climate in Brazil. Occupants of two kinds of buildings (three offices and two university classrooms) assessed their thermal environment through 'right-here-right-now' questionnaires, while at the same time indoor climatic measurements were carried out in situ (air temperature and radiant temperature, air speed and humidity). A total of 5,036 votes from 1,161 occupants were collected. Results suggest that the clothing values adopted by occupants inside buildings were influenced by: 1) climate and seasons of the year; 2) different configurations and indoor thermal conditions; and 3) occupants' age and gender. Significant intergenerational and gender differences were found, which might be explained by differences in metabolic rates and fashion. The results also indicate that there is a great opportunity to exceed the clothing interval of the thermal comfort zones proposed by international standards such as ASHRAE 55 (2013) - 0.5 to 1.0 clo - and thereby save energy from cooling and heating systems, without compromising the occupants' indoor thermal comfort.
DOI: 10.6084/m9.figshare.20026811
title: Interferences of skin colour on pedestrians' thermal perception

description: Abstract This study analyses effects of skin colour on pedestrians' thermal perception in outdoor spaces. The field study was carried out in downtown Rio de Janeiro, evaluating thermal sensation and thermal preference votes of passers-by. Responses from structured questionnaires were compared to data from the outdoor comfort index UTCI (Universal Thermal Climate Index), by means of data grouping according to skin colour categories provided by the Brazilian Statistical Institute IBGE. In this case, skin colour was informed by the interviewees. The monitoring took place during late spring/summer periods between 2012 and 2015, typically from 10am until 3pm. A Davis Vantage Pro2 weather station was used while, at the same time, the researchers administered a structured questionnaire based on the ISO 10551, to which a question regarding skin colour was added. The comparison between thermal sensation and thermal preference from the point of view of skin colour demonstrated that while the group with white skin showed greater tolerance to heat, they preferred cooler conditions to help neutralise heat stress. Statistical differences were only observed in the aspect of thermal preference between the groups analysed.
DOI: 10.6084/m9.figshare.20026811.v1
title: Interferences of skin colour on pedestrians' thermal perception

description: Abstract This study analyses effects of skin colour on pedestrians' thermal perception in outdoor spaces. The field study was carried out in downtown Rio de Janeiro, evaluating thermal sensation and thermal preference votes of passers-by. Responses from structured questionnaires were compared to data from the outdoor comfort index UTCI (Universal Thermal Climate Index), by means of data grouping according to skin colour categories provided by the Brazilian Statistical Institute IBGE. In this case, skin colour was informed by the interviewees. The monitoring took place during late spring/summer periods between 2012 and 2015, typically from 10am until 3pm. A Davis Vantage Pro2 weather station was used while, at the same time, the researchers administered a structured questionnaire based on the ISO 10551, to which a question regarding skin colour was added. The comparison between thermal sensation and thermal preference from the point of view of skin colour demonstrated that while the group with white skin showed greater tolerance to heat, they preferred cooler conditions to help neutralise heat stress. Statistical differences were only observed in the aspect of thermal preference between the groups analysed.
DOI: 10.6084/m9.figshare.20026813
title: Determination of neutral temperature in higher education classrooms in the bioclimatic zones of the state of Mato Grosso, BR

description: Abstract Thermal neutrality is a condition where a person does wish their environment to be neither cooler nor warmer, and it is a conditioning factor to achieve thermal comfort. The fact that the state of Mato Grosso presents significant climate variations through its territory highlights the need for specific studies, particularly in higher education institutions, as their occupants spend extended periods of time in classrooms and learning capacity of students is directly related to their comfort conditions. This paper evaluates neutral temperatures in classrooms in four bioclimatic zones of Mato Grosso state. The methodology is based on questionnaires for the verification of personal variables, and the measurement of climatic variables. The field research was conducted during the dry and rain seasons, totalling 64 cycles of measurement and 1151 questionnaires. Through an ordinary least square regression analysis between the operating temperature and the thermal sensation voting, the equations to determine the neutral temperature were adapted for each bioclimatic area for the rain and dry seasons. The average neutral temperature found for the state of Mato Grosso was 26.6 ºC.
DOI: 10.6084/m9.figshare.20026813.v1
title: Determination of neutral temperature in higher education classrooms in the bioclimatic zones of the state of Mato Grosso, BR

description: Abstract Thermal neutrality is a condition where a person does wish their environment to be neither cooler nor warmer, and it is a conditioning factor to achieve thermal comfort. The fact that the state of Mato Grosso presents significant climate variations through its territory highlights the need for specific studies, particularly in higher education institutions, as their occupants spend extended periods of time in classrooms and learning capacity of students is directly related to their comfort conditions. This paper evaluates neutral temperatures in classrooms in four bioclimatic zones of Mato Grosso state. The methodology is based on questionnaires for the verification of personal variables, and the measurement of climatic variables. The field research was conducted during the dry and rain seasons, totalling 64 cycles of measurement and 1151 questionnaires. Through an ordinary least square regression analysis between the operating temperature and the thermal sensation voting, the equations to determine the neutral temperature were adapted for each bioclimatic area for the rain and dry seasons. The average neutral temperature found for the state of Mato Grosso was 26.6 ºC.
DOI: 10.6084/m9.figshare.20026814.v1
title: Human thermal comfort in a HVAC office building located in a humid subtropical climate: field studies vs. analytical approach

description: Abstract When it comes to thermal comfort in fully air conditioned buildings, Fanger's predictive mean vote/predicted percentage of dissatisfied (PMV/PPD) published in 1970 is the most widely used model to predict and analyse environments. This paper presents thermal comfort data from an office building that operates with a central air-conditioning system (HVAC) located in Florianópolis, a city with humid subtropical climate on the southern coast of Brazil. This paper presents and compares thermal sensation results obtained from field studies (284 participants) against calculated PMV/PPD values based on the ASHRAE 55 (2013) analytical method. Electronic questionnaires were administered simultaneously to instrumental measurements (air temperature, radiant air temperature, air speed and humidity) during 2014. The results showed that, although 91% of the occupants evaluated the environment as thermally comfortable, the mean PPD scored 16% of dissatisfied people. Moreover, results suggested a certain inadequacy of this model to the climate in question, especially when the PMV ranges between ± 0.50, the interval determined as comfortable by ASHRAE 55 (2013).
DOI: 10.6084/m9.figshare.20026814
title: Human thermal comfort in a HVAC office building located in a humid subtropical climate: field studies vs. analytical approach

description: Abstract When it comes to thermal comfort in fully air conditioned buildings, Fanger's predictive mean vote/predicted percentage of dissatisfied (PMV/PPD) published in 1970 is the most widely used model to predict and analyse environments. This paper presents thermal comfort data from an office building that operates with a central air-conditioning system (HVAC) located in Florianópolis, a city with humid subtropical climate on the southern coast of Brazil. This paper presents and compares thermal sensation results obtained from field studies (284 participants) against calculated PMV/PPD values based on the ASHRAE 55 (2013) analytical method. Electronic questionnaires were administered simultaneously to instrumental measurements (air temperature, radiant air temperature, air speed and humidity) during 2014. The results showed that, although 91% of the occupants evaluated the environment as thermally comfortable, the mean PPD scored 16% of dissatisfied people. Moreover, results suggested a certain inadequacy of this model to the climate in question, especially when the PMV ranges between ± 0.50, the interval determined as comfortable by ASHRAE 55 (2013).
DOI: 10.6084/m9.figshare.20026817
title: Thermal performance and solar absorptance of asbestos-free fiber cement roof tiles under different natural aging processes

description: Abstract Fiber cement roof tiles undergo natural aging processes that may change their surface solar absorptance and thermal performance: carbonation, efflorescence and fungal development. With the aim of identifying the impact of these processes on their absorptance and thermal performance, this research study was undertaken in three stages: a) determination of the aging processes in tiles naturally aged for 28 days and after 36 months of exposure; b) surface temperature measurements by infrared thermography; and c) spectral reflectance measurements with a spectrophotometer to calculate the solar absorptance of the tiles. The results indicate that the carbonation process after 36 months of natural aging reduced the tiles' absorptance and surface temperatures when compared to the new 28 days' tiles. However, tiles with fungal growth after 36 months of exposure showed increased initial absorptance and surface temperatures, indicating that fungal growth can increase building solar heat gains. The results indicated that the natural aging processes of fiber cement tiles considerably affect its thermal performance over the building's lifetime.