Certain processes in indoor air, such as deposition, partitioning, and heterogeneous reactions, involve interactions with surfaces. To accurately describe the surface-area-to-volume ratio in a room, we have characterized the surface area, volume, shape, and material of objects in five bedrooms, four kitchens, and three offices. Averaged over all types of rooms, the ratio of surface area with contents to that without contents was 1.7 ± 0.2 (mean ± standard error), and the ratio of volume of freely moving air to volume of the entire space was 0.89 ± 0.05. Ignoring contents, the surface-area-to-volume ratio was 1.9 ± 0.3 m-1; accounting for contents, the ratio was 3.7 ± 1.2 m-1. Ratios were not significantly different between room types and were comparable to those measured for 33 rooms in a similar study. Due to substantial differences in the design and contents of kitchens, their ratios had the highest variability among the three room types. On average, the contents of bedrooms, kitchens, and offices increase their surface area by 70% and decrease their volume of freely moving air by 11% compared to an empty room. The most common shape of objects in a room was a flat plate, while each room also had many irregularly-shaped objects. Paint and wood were the two most common materials in each room, although the distribution of materials varied by room type. The results of this study can be used to improve understanding of the behavior of gases and particles in indoor environments. / Master of Science

Smart built environments (SBE) include fundamentally different and enhanced capabilities compared to the traditional built environments. Traditional built environments consist of basic building elements and plain physical objects. These objects offer primitive interactions, basic use cases and direct affordances. As a result, the traditional architectural process is completely focused on two dimensions of design, i.e., the physical environment based on context and functional requirements based on the users. Whereas, SBEs have a third dimension, computational and communication capabilities embedded with physical objects enabling enhanced affordance and multi-modal interaction with the surrounding environment. As a result of the added capability, there is a significant change in activity pattern/spatial use pattern in an SBE. So, the traditional architectural design process needs to be modified to meet the unique requirements of SBE design. The aim of this thesis is to modify the traditional architectural design process by introducing SBE requirements. Secondly, this thesis explores a reference implementation of immersive technology based SBE design framework. The traditional architectural design tools are not always enough to represent, visualize or model the vast amount of data and digital components of SBE. SBE empowered with IoT needs a combination of the virtual and real world to assist in the design, evaluation and interaction process. A detailed discussion explored the required capabilities for facilitating an MR-based SBE design approach. An immersive technology is particularly helpful for SBE design because SBEs offer novel interaction scenarios and complex affordance which can be tested using immersive techniques. / Master of Science / Smart built environments (SBE) are fundamentally different from our everyday built environments. SBEs have enhanced capabilities compared to the traditional built environments because computational and communication capabilities are embedded with everyday objects in case of SBEs. An wall or a table is no longer just a simple object rather an interactive component that can process information and communicate with people or other devices. The introduction of these smart capabilities in physical environment leads to change in user's everyday activity pattern. So the spatial design approach also needs to be reflect these changes. As a result, the traditional architectural design process needs to be modified for designing SBEs. The aim of this thesis is to introduce a modified SBE design process based on the traditional architectural design process. Secondly, this thesis explores an immersive technology (e.g.- mixed reality, virtual reality etc.) based SBE design framework. The traditional architectural design tools mostly provide two dimensional representations like sketches or renderings. But two dimensional drawings are not always enough to represent, visualize or model the vast amount of data and digital components associated with SBE. The SBE design process needs enhanced capabilities to represent the interdependency of connected devices and interaction scenarios with people. Immersive technology can be introduced to address this problem, to test the proposed SBE in a virtual/mixed reality environment and to test the proposed 'smartness' of the objects. This thesis explores the potentials of this type of immersive technology based SBE design approach.

Architects imagine and reimagine utopia. It is a role with the task to produce cities that are liveable, beautiful, functional, flexible and inclusive. Spaces made for and together with people, and places that meet their needs and dreams. Architects and urban planners don’t plan for the city to be disused, vandalised or constantly decorated and redecorated by an anonymous group, however, it is. Graffiti writing creates a sense of belonging and freedom, a liberating idea that architects, urban planners, and politicians are not alone in forming our spaces and places.  Cities grow, change, are being used, disused, defined and redefined through graffiti. Disobedient and defying activities are constantly happening to our buildings, without the architect’s knowledge or power. The disorder and chaos of graffiti is a contrast to the planned world architects imagine. Architecture depends and affect the social, economic, and political climate of the city—and graffiti are dependent on the external structures as well. An anarchist perspective enables liberating and theoretical tools for reimagining the future. Cities are in a constant process of transformation, in the way authority direct the city—also in how the user protest, disrupt, invade, and navigate space. The future of the city, or a utopia, should be seen as a process and not a final product.  Architecture and urban planning are part of forming the socioeconomic landscape. In order to have an equal city, architecture must acknowledge the social reproduction of space. Furthermore, we can learn how to be situated, in our understanding, viewing, and designing of space. Defying and disorderly elements in the city impacts the built environment and the socioeconomic landscape. Graffiti bring something from working class roots into the city and mediate confrontations between different socio-spatial groups. It allows a discussion on how places can, and should, feel liberating, fun, and flexible—rather than static, forbidden, or inaccessible. Through discussions on graffiti, it’s role and imprint, together on anarchist spatial design and notions on anarchist utopia—this thesis is about confrontations in order to negotiate the city.  Graffiti writing is a disobedient activity that is constantly confronting the rules, the norms, and roles within the city. Through illegal graffiti, I discuss space- and place-making without authority; graffiti as a tool to negotiate the right to the city. The built and planned environment has an important role in shaping socioeconomic landscapes, it can divide people, segregate them, and hand socioeconomic positions—and of course the opposite, bring people together, create affinity and community. Graffiti writing creates confrontation without authority, without being directed and designed by decisionmakers.

The impact that urban green spaces in urban environments have on the sustainability and quality of life of the residents is phenomenal (Atiqul & Shah, 2011:601; UrbSpace, 2010; Levent et al, 2004:1). The local reality in South Africa confirms that green spaces in urban environments are decreasing because of growing populations and increasing urbanization (Statistics South Africa, 2013:2). This study aims to investigate the planning of and provision for green spaces in the urban environment, along with the benefits that such spaces can provide to communities by focusing on the aspect of child-friendliness. The planning of child-friendly spaces is no new phenomena in the international context, but however, limited in local context. This research aims to investigate the concept of child-friendly spaces, along with theoretical aspects and international best practices, in order to be able to evaluate the current South African approach (and legislative support) of the planning of such spaces within urban green spaces. This study evaluated the planning and implementation of child-friendly spaces in the urban environment of the city of Durban, Republic of South Africa. It is based on the theoretical background investigating concepts such as open spaces, green spaces and child-friendly spaces. The importance of planning for green spaces and as such, child-friendly green spaces were also elaborated on. Two international case studies were identified as best-practice cases and included in this research, namely Mullerpier child-friendly public playground in Rotterdam, the Netherlands, and Kadidjiny Park in Melville, Australia. The aim was to determine how these child-friendly spaces were planned and developed and to identify tools that were used to accomplish the goal of providing successful child-friendly green spaces. Planning approaches of the two international case studies illustrated the need and importance of planning for such spaces and how it should be implemented to ensure sustainability of the child-friendly space itself and the surrounding area. The policies and frameworks which influence the study area in Essenwood, Durban, were identified and analysed in order to establish whether or not the planning and development of child-friendly spaces is supported within the chosen area. This research concluded that child-friendly green spaces have a positive impact on the urban environment, caters for children’s needs and assist in their development and interaction with the natural environment. The need for these spaces is of utmost importance and the proposed implementation and improvement of child-friendly green spaces should be supported by way of specific policies and legislation, in order to ensure the success and sustainability of these spaces. Examples of international case studies were used to identify best practical examples, in order to formulate recommendations to improve the planning and development of child-friendly spaces in South Africa. Local gaps were identified in the current approach to planning of these child-friendly green spaces in South Africa. / MArt et Scien (Urban and Regional planning), North-West University, Potchefstroom Campus, 2015

The impact that urban green spaces in urban environments have on the sustainability and quality of life of the residents is phenomenal (Atiqul & Shah, 2011:601; UrbSpace, 2010; Levent et al, 2004:1). The local reality in South Africa confirms that green spaces in urban environments are decreasing because of growing populations and increasing urbanization (Statistics South Africa, 2013:2). This study aims to investigate the planning of and provision for green spaces in the urban environment, along with the benefits that such spaces can provide to communities by focusing on the aspect of child-friendliness. The planning of child-friendly spaces is no new phenomena in the international context, but however, limited in local context. This research aims to investigate the concept of child-friendly spaces, along with theoretical aspects and international best practices, in order to be able to evaluate the current South African approach (and legislative support) of the planning of such spaces within urban green spaces. This study evaluated the planning and implementation of child-friendly spaces in the urban environment of the city of Durban, Republic of South Africa. It is based on the theoretical background investigating concepts such as open spaces, green spaces and child-friendly spaces. The importance of planning for green spaces and as such, child-friendly green spaces were also elaborated on. Two international case studies were identified as best-practice cases and included in this research, namely Mullerpier child-friendly public playground in Rotterdam, the Netherlands, and Kadidjiny Park in Melville, Australia. The aim was to determine how these child-friendly spaces were planned and developed and to identify tools that were used to accomplish the goal of providing successful child-friendly green spaces. Planning approaches of the two international case studies illustrated the need and importance of planning for such spaces and how it should be implemented to ensure sustainability of the child-friendly space itself and the surrounding area. The policies and frameworks which influence the study area in Essenwood, Durban, were identified and analysed in order to establish whether or not the planning and development of child-friendly spaces is supported within the chosen area. This research concluded that child-friendly green spaces have a positive impact on the urban environment, caters for children’s needs and assist in their development and interaction with the natural environment. The need for these spaces is of utmost importance and the proposed implementation and improvement of child-friendly green spaces should be supported by way of specific policies and legislation, in order to ensure the success and sustainability of these spaces. Examples of international case studies were used to identify best practical examples, in order to formulate recommendations to improve the planning and development of child-friendly spaces in South Africa. Local gaps were identified in the current approach to planning of these child-friendly green spaces in South Africa. / MArt et Scien (Urban and Regional planning), North-West University, Potchefstroom Campus, 2015

The construction industry has a significant impact on the environment. It is responsible for a large proportion of global CO2 emissions, as well as the use of both natural resources and energy reserves. Green building practices are becoming increasingly recognised as a way of mitigating CO2 emissions and energy consumption, with economic, environmental, social and financial benefits accruing. The aim of the research reported here is to investigate the opportunities to promote sustainable construction practices in Kuwait. This entails identifying the current status of green construction practices, the awareness level of construction stakeholders, the key drivers that motivate the implementation of green practices, as well as barriers to green construction and the risks associated with its implementation. After comprehensively reviewing the literature, primary data were collected and analysed in three phases, using quantitative and qualitative approaches. The three phases of primary data gathering consist of conducting a questionnaire survey, an interview survey and running a simulation. Local stakeholders associated with the Kuwaiti construction industry are the target population and are used as a platform from which to obtain the data. A total of 678 questionnaires were distributed and 504 completed questionnaires were received, while a total of 96 interviews were conducted. The quantitative data is then analysed through descriptive analysis and inferential statistics with the help of SPSS and Microsoft Excel, while the qualitative data is analysed using the content analysis method. Simulation analysis is performed using IES VE (Integrate Environmental Solution) computer simulation software in order to demonstrate the impact different construction materials have on the energy efficiency of the building. The main findings of this research are as follows: implementation of the concept of sustainability is low in the Kuwaiti construction industry; more action and strategies to improve and encourage this concept are therefore required in order for it to be applied efficiently in future construction projects; lack of awareness is found to be the main barrier to the use of green construction methods in Kuwait; the Kuwaiti government must take initiatives in terms of introducing standards, policies and incentives to promote green construction; the risks affecting the development of green construction processes vary and are unevenly distributed throughout the construction industry in Kuwait, but common risks, such as ‘lack of experts’, ‘limit of a green supply chain’, ‘lack of experts ‘ and ‘higher cost’, are considered the most important risks overall; improved measures concerning the use of energy-saving materials can facilitate the achievement of energy-effective building design. The findings of this study provide valuable information for organisations that intend to participate in green construction projects in Kuwait. Recommendations based on the research findings and conclusions are offered to the Kuwaiti construction industry and government. Recommendations for further research are identified.

Sustainable Built Environments Senior Capstone Project / During Tucson rainstorms, many roads and neighborhoods experience high levels of flooding on the city’s street networks. This phenomenon creates unsafe road conditions, damage to the road infrastructure, and excessive urban stormwater runoff that is potentially polluted. The vast quantities of impervious surfaces in the urban landscape impede the rainwater’s ability to infiltrate the ground, thus resulting in increased volumes of runoff during a rainstorm. Stormwater management is used by municipalities and communities to address the previously mentioned adverse impacts of stormwater runoff. Various techniques and strategies used in stormwater management include, low impact development (LID), green infrastructure, and better site design (BSD) strategies implemented during design stages to reduce stormwater runoff levels. In addition, local governments can establish stormwater utilities and policies in order to help address and better manage the issue of stormwater runoff within urban areas. The primary research questions of this study will include: What are the most effective best management practices and techniques to address urban runoff? What combination of best management practices and government policies will be the more effective in addressing Tucson’s urban runoff problem? Accordingly, this study will examine a variety of policies and techniques to address stormwater runoff, and then, based on this information, provide a suggestion of the best practices and techniques that may be feasible for implementation in Tucson.

Sustainable Built Environments Senior Capstone Project / During Tucson rainstorms, many roads and neighborhoods experience high levels of flooding on the city’s street networks. This phenomenon creates unsafe road conditions, damage to the road infrastructure, and excessive urban stormwater runoff that is potentially polluted. The vast quantities of impervious surfaces in the urban landscape impede the rainwater’s ability to infiltrate the ground, thus resulting in increased volumes of runoff during a rainstorm. Stormwater management is used by municipalities and communities to address the previously mentioned adverse impacts of stormwater runoff. Various techniques and strategies used in stormwater management include, low impact development (LID), green infrastructure, and better site design (BSD) strategies implemented during design stages to reduce stormwater runoff levels. In addition, local governments can establish stormwater utilities and policies in order to help address and better manage the issue of stormwater runoff within urban areas. The primary research questions of this study will include: What are the most effective best management practices and techniques to address urban runoff? What combination of best management practices and government policies will be the more effective in addressing Tucson’s urban runoff problem? Accordingly, this study will examine a variety of policies and techniques to address stormwater runoff, and then, based on this information, provide a suggestion of the best practices and techniques that may be feasible for implementation in Tucson.

Sustainable Built Environments Senior Capstone Project / This capstone project evaluates the current state of floating solar photovoltaic technology and proposes use of the technology on water management infrastructure in Arizona. The study finds that floating solar photovoltaic has a higher energy density (100 W/m^2) than land-based, utility-scale solar and does not involve significant cost increases. The study proposes and models a small pilot installation on Lake Pleasant Reservoir, part of the Central Arizona Project, and finds that lifetime costs per unit energy are higher than what the Central Arizona Project currently pays for energy, assuming US median per-wattinstalled costs for commercial solar. This cost however does not factor in savings from water conservation, existing infrastructure, reduced land costs, or other benefits. The study recommends water reservoirs by hydropower dams as ideal locations for floating photovoltaic installations. Justified with a significant background on Arizona’s environmental, social, and economic sustainability, as well as regulations calling for increased renewable energy generation and reduced carbon emissions, this study recommends aggressive implementation of floating solar photovoltaic technology within a sustainable development paradigm.

Sustainable Built Environments Senior Capstone Project / This study analyzes 15 years of wildlife tracking data across more than 40 transects in the Sky Islands surrounding landscape to investigate how human-wildlife encounters may respond to a decade of land development. The average detection of species per visit (ADPV), the quantification for human-wildlife encounters and indicator of species richness, was calculated for each transect across two sample periods 2001-2011 and 2011-2015. ArcMap was used to visualize the ADPV across sampling sites in the Sky Islands region. The p-value was then calculated to determine whether there was a significant difference between the ADPV of all species and of focal species before and after 2011. The results concluded there was no significant difference and the null hypothesis was accepted.