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abstract: This dissertation examines the way in which social capital, or productive networks, can be used to support downtown renewal. This case study examines the way in which Phoenix Community Alliance (PCA) and Downtown Phoenix Partnership (DPP)--two, critical downtown-focused organizations ostensibly founded for civic improvement--use social capital to advance downtown urban development initiatives. This case study also explores how and the extent to which new social capital is generated by PCA and DPP through the processes of planning, designing, and implementing downtown development projects and the kinds of initiatives this social capital enables, whether and how the focus of downtown Phoenix development has shifted over time, the challenges facing contemporary downtown development and role PCA and DPP might play in addressing these issues, and recommended strategies for advancing future downtown development through social capital that evolves as downtown needs change. This dissertation contributes to the general understanding of how pivotal groups responsible for impacting downtown development and quality of life can become more effective in their roles by examining how they create networks pivotal to advancing urban downtown renewal. Research findings illuminate how community development groups can more effectively use networks to inspire downtown improvement. Findings emphasize the need to engage a broader downtown community, including both emerging and established organizations and those who desire to contribute to a diverse and exciting heart or city core. / Dissertation/Thesis / Ph.D. Public Administration 2011

xiv, 165 p. ： ill. (some col.) / Our current focus on the city core includes reintroducing the mixed-use building. This typology is not without challenges, and arguably none is more pressing than full retail occupancy. This analysis investigates the potential for start-up companies to supplement traditional retail on an interim basis. By documenting the needs and expectations of the start-up and development communities (from multiple perspectives), this study assesses the potential connection between mixed-use and the start-up company. Using a methodology informed by literature and augmented by personal accounts, this analysis reveals that the inclusion of start-up companies in mixed-use projects can present both short- and long-term benefits to ongoing retail difficulties: mixed-use buildings can be an ideal location for start-up firms, including start-up tenants can be economically feasible if certain measures are in place, and a new development model is not needed to connect an emerging business with an existing project. / Committee in charge: Howard Davis， Chairperson； John Rowell， Member； Gerardo Sandoval， Member

abstract: The rapid rate of urbanization coupled with continued population growth and anthropogenic activities has resulted in a myriad of urban climate related impacts across different cities around the world. Hot-arid cities are more vulnerable to induced urban heat effects due to the intense solar radiation during most of the year, leading to increased ambient air temperature and outdoor/indoor discomfort in Phoenix, Arizona. With the fast growth of the capital city of Arizona, the automobile-dependent planning of the city contributed negatively to the outdoor thermal comfort and to the people's daily social lives. One of the biggest challenges for hot-arid cities is to mitigate against the induced urban heat increase and improve the outdoor thermal. The objective of this study is to propose a pragmatic and useful framework that would improve the outdoor thermal comfort, by being able to evaluate and select minimally invasive urban heat mitigation strategies that could be applied to the existing urban settings in the hot-arid area of Phoenix. The study started with an evaluation of existing microclimate conditions by means of multiple field observations cross a North-South oriented urban block of buildings within Arizona State University’s Downtown campus in Phoenix. The collected data was evaluated and analyzed for a better understanding of the different local climates within the study area, then used to evaluate and partially validate a computational fluid dynamics model, ENVI-Met. Furthermore, three mitigation strategies were analyzed to the Urban Canopy Layer (UCL) level, an increase in the fraction of permeable materials in the ground surface, adding different configurations of high/low Leaf Area Density (LAD) trees, and replacing the trees configurations with fabric shading. All the strategies were compared and analyzed to determine the most impactful and effective mitigation strategies. The evaluated strategies have shown a substantial cooling effect from the High LAD trees scenarios. Also, the fabric shading strategies have shown a higher cooling effect than the Low LAD trees. Integrating the trees scenarios with the fabric shading had close cooling effect results in the High LAD trees scenarios. Finally, how to integrate these successful strategies into practical situations was addressed. / Dissertation/Thesis / Masters Thesis Architecture 2020

Background: Effort estimation is one of the cornerstones in project management with the purpose of creating efficient planning and the ability to keep budgets. Despite the extensive research done within this area, one of the biggest and most complex problems in project management within software development is still considered to be the estimation process. Objectives: The main objectives of this thesis were threefold: i) firstly to define the characteristics for a large project, ii) secondly to identify factors causing inaccurate effort estimates and iii) lastly to understand how the identified factors impact the effort estimation process, all of this within the context of large-scale agile software development and from the perspective of a project team.Methods: To fulfill the purpose of this thesis, an exploratory case study was executed. The data collection consisted of archival research, questionnaire, and interviews. The data analysis was partly conducted using the statistical software toolStata.Results: The definition of a large project is from a project team’s perspective based on high complexity and a large scope of requirements. The following identified factors were identified to affect the estimation process in large projects: deficient requirements, changes in scope, complexity, impact in multiple areas, coordination, and required expertise, and the findings indicate that these are affecting estimation accuracy negatively. Conclusions: The conclusion of this study is that besides the identified factors affecting the estimation process there are many different aspects that can directly or indirectly contribute to inaccurate effort estimates, categorized as requirements, complexity, coordination, input and estimation process, management, and usage of estimates.

Recently federal policy aimed at halting decline in urban neighborhoods has included a major focus on housing rehabilitation efforts. In the case of Portland, Oregon, federally funded improvement loans for owner-occupied housing units resulted in the rehabilitation of almost four thousand homes from 1975 until 1978, over twice the number of homes rehabilitated in any other city in the nation. The purpose of the present study was to examine and analyze the city's rehabilitation loan program in two ways. First, the loan process itself was examined to ascertain whether there were any deficiencies in the loan program which should be corrected. The second, and primary, focal point was the specific neighborhoods where rehabilitation loans have been funneled. The impact of the loan programs on the neighborhoods as communicated by their residents determined how successful Portland has been in dealing with urban decline through its loan programs. Prior to gathering primary data on the neighborhoods, several secondary sources of information were used. The Portland Development Commission's in-house evaluations of the loan process demonstrated strong recipient support for the program. A survey of loan recipient files showed loans going to low income families with few assets. Although half of the loans went to married couples, a substantial number of loans went to divorced women and widows. The majority of rehabilitated homes were over fifty years old, and their median assessed value was $16,500. Secondary data was also used to look at outside perceptions of changes taking place in loan neighborhoods. Real estate trends and mortgage and home improvement loan activities suggested that the impact of the government loan programs has not yet been substantial enough to trigger changes in private policies related to the neighborhoods. Primary data for the study came from a random sample survey of four hundred persons in four Portland neighborhoods. Two neighborhoods, one in the north section of the city and one in southeast, where loans have been given, were paired with two control neighborhoods where loans were not available. The survey instrument used contained 72 variables chosen as capable of determining what the impact of the loan program has been on loan recipients, their neighbors, and their neighborhoods. Four outcomes could have stemmed from the loan programs. The first possibility was that people living in the neighborhoods where Housing and Community Development loans have been granted should feel more positive about their neighborhood than those not living in HCD neighborhoods. A second consequence could have been that HCD neighborhoods are upgrading socio-economically. Third, HCD neighborhood residents simply may not have perceived improvements in their neighborhoods, or fourth, even if they perceive improvements, they do not show significantly higher levels of satisfaction with their neighborhoods than holds true for respondents living in the control neighborhoods. The data indicated that although residents in HCD neighborhoods do perceive improvements taking place in their neighborhoods, their levels of satisfaction with their neighborhoods are not significantly higher than satisfaction levels in non-loan neighborhoods. Socio-economic changes may be taking place in the Southeast HCD neighborhood. As for the loan process, the program was rated highly by the recipients of the loans, both in in-house evaluations done for the Portland Development Commission and as reported in the neighborhood survey. The study concludes that the city's efforts provided a solid first step in developing a strong commitment to strengthening inner city neighborhoods, but it is only a first step. A stronger commitment, particularly on the part of private industry, is needed to end urban neighborhood decline.

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In recent years, an array of political, environmental, and health activists have brought to light the previously overlooked structural inequalities that plague many urban cities and their underserved populations. With a growing population and an increased dichotomy between social classes in the United States, urbanization may be inevitable. However, how urban planners and public agencies choose to build and design these areas is malleable. Provision of safe and equitable living conditions by these individuals is an obligation of utmost importance, and as such, this thesis aims to both provide insight as to how the built environment, development patterns, and land use play a significant role in in morbidity and mortality in urban communities across the nation and world, as well as assist in bridging the divide between disciplines of urban health and urban planning as we look towards creating healthier, greener, more equitable cities. The built environment and health can and should be discussed in the same breath during urban planning and development, and thus, the preservation, presence, and development of urban green space should be prioritized during processes of urbanization, with active engagement and empowerment from the communities in which we seek to build. The existing inverse association between increased urbanization and community health necessitates an induction of change and a call for action from urban planners, city and state officials, health scientists, environmental conservationists, and communities as a whole. / Urban Bioethics

This thesis explores how to conduct a regional foodshed assessment and further provides guidance to local and regional planners on the use of foodshed assessments. A foodshed is the geographic origin of a food supply. Before the 1800s, foodsheds were predominantly local — within the city or neighboring countryside. Today most urban areas are supported by a global foodshed. While the global foodshed can present many benefits, it also creates tremendous externalities. In an attempt to address these concerns, promotion of alternative local foodsheds has re-emerged. A foodshed assessment serves as a planning tool for land use planners, as well as for local food advocates, offering an understanding of land use implications that is not often carefully considered. By determining the food needs of a region’s population, the land base needed to support that population can then be identified. In this way, planners can have a stronger basis for promoting working farmland preservation measures and strengthening the local foodshed. This thesis compares the approaches of five previous foodshed assessments and presents a model for conducting an assessment on a regional level. This model is then applied to the Pioneer Valley of Western Massachusetts with the goal of determining how much the agricultural production in the Pioneer Valley fulfills the food consumption needs of the region’s population. The assessment also compares the amount of current working farmlands to open lands available for farming, and the extent of farmland necessary to meet regional food demand for various diet types.