Mostrando recursos 1 - 20 de 30

  1. The concept of urban intensity and China's townization policy: Cases from Zhejiang Province

    Guan, ChengHe; Rowe, Peter Grimmond
    Urban intensity, in this paper, is measured by four related concepts: compactness, diversity, density, and connectivity. Together they lead to a single idea when considering spatial distributions potentially in a virtuous manner with regard to resource consumption, economic opportunity, social integration and environmental performance. The methodologies applied here included Moran's I, Shannon's index entropy, and accessibility isotimelines, which were then applied to real case scenarios in 20 towns in Zhejiang Province, selected based on their economic performances, population sizes, and geographical locations. Further inspection discovered that density, an outcome of urban form, is highly correlated to compactness, leading to its...

  2. Breathing walls: The design of porous materials for heat exchange and decentralized ventilation

    Craig, Salmaan; Grinham, Jonathan Lorne
    This study demonstrates how to design pores in building materials so that incoming fresh air can be efficiently tempered with low-grade heat while conduction losses are kept to a minimum. Any base material can be used in principle, so long as it can be manufactured with millimeter-scale air channels. The channel-pores are optimized according to the thermal conductivity of the base material, the dimensions of the panel, and the suction pressure sustained by a given fan or a chimney. A water circuit is integrated at the interior surface to ensure direct thermal contact and prevent radiant discomfort. Correlations from the...

  3. Breathing walls: The design of porous materials for heat exchange and decentralized ventilation

    Craig, Salmaan; Grinham, Jonathan Lorne
    This study demonstrates how to design pores in building materials so that incoming fresh air can be efficiently tempered with low-grade heat while conduction losses are kept to a minimum. Any base material can be used in principle, so long as it can be manufactured with millimeter-scale air channels. The channel-pores are optimized according to the thermal conductivity of the base material, the dimensions of the panel, and the suction pressure sustained by a given fan or a chimney. A water circuit is integrated at the interior surface to ensure direct thermal contact and prevent radiant discomfort. Correlations from the...

  4. Should big cities grow? Scenario-based cellular automata urban growth modeling and policy applications

    Guan, ChengHe; Rowe, Peter Grimmond
    The formation of ‘Urban Networks’ has become a wide-spread phenomenon around the world. In the study of metropolitan regions, there are competing or diverging views about management and control of environmental and land-use factors as well as about scales and arrangements of settlements. Especially in China, these matters alongside of regulatory aspects, infrastructure applications, and resource allocations, are important because of population concentrations and the overlapping of urban areas with other land resources. On the other hand, the increasing sophistication of models operating on iterative computational power and widely-available spatial information and analytical techniques make it possible to simulate and...

  5. Adipocyte arrestin domain-containing 3 protein (Arrdc3) regulates uncoupling protein 1 (Ucp1) expression in white adipose independently of canonical changes in β-adrenergic receptor signaling

    Carroll, Shannon H.; Zhang, Ellen; Wang, Bing F.; LeClair, Katherine B.; Rahman, Arifeen; Cohen, David E.; Plutzky, Jorge; Patwari, Parth; Lee, Richard T.
    Adaptive thermogenesis and cold-induced activation of uncoupling protein 1 (Ucp1) in brown adipose tissue in rodents is well-described and attributed to sympathetic activation of β-adrenergic signaling. The arrestin domain containing protein Arrdc3 is a regulator of obesity in mice and also appears linked to obesity in humans. We generated a mouse with conditional deletion of Arrdc3, and here we present evidence that genetic ablation of Arrdc3 specifically in adipocytes results in increased Ucp1 expression in subcutaneous and parametrial adipose tissue. Although this increase in expression did not correspond with significant changes in body weight or energy expenditure, adipocyte-specific Arrdc3-null mice...

  6. What is a Walkable Place? The Walkability Debate in Urban Design

    Forsyth, Ann

  7. Modeling an Existing Building in DesignBuilder/EnergyPlus: Custom vs. Default Inputs,”

    Wasilowski, Holly; Reinhart, Christoph; Samuelson, Holly Wasilowski

  8. Perceived and Police-Reported Neighborhood Crime: Linkages to Adolescent Activity Behaviors and Weight Status

    Forsyth, Ann; Wall, Melanie; Choo, Tse; Larson, Nicole; Van Riper, David; Neumark-Sztainer, Dianne; forsyth, ann

  9. Moving Beyond ‘Community’ Participation: Perceptions of Renting and the Dynamics of Participation Around Urban Development in Dar es Salaam, Tanzania

    Hooper, Michael Craig; Cadstedt, Jenny
    This paper employs extensive interviews to examine the ways in which perceptions of renting — on the part of renters, owners and other key actors in the development process — influenced the dynamics of participation around two recent urban development projects in Dar es Salaam, Tanzania. The study responds to concerns that participatory planning too frequently treats communities as homogenous and overlooks barriers to participation faced by marginalized groups, such as renters. The results show that renters were unwilling and often unable to participate due to perceptions, held by themselves and by others, of renter transience and inconsequentiality. These perceptions...

  10. Confronting Urban Displacement: Social Movement Participation and Post-Eviction Resettlement Success in Dar es Salaam, Tanzania

    Hooper, Michael Craig; Ortolano, Leonard
    This article investigates whether urban social movement participation influences post-eviction resettlement success. Pre- and post-eviction interviews were conducted with sixty-four slum dwellers from Dar es Salaam, Tanzania, including members of the Tanzania Federation of the Urban Poor (TFUP). The majority of interviewees reported improved post-eviction housing but adverse employment impacts. TFUP membership was negatively associated with employment outcomes, particularly for property owners. Expecting TFUP to secure housing for them, members delayed finding accommodation. This led to resettlement farther from their former homes and negatively affected employment. Women were especially vulnerable following eviction, with their post-eviction pay falling because of the...

  11. Motivations for Slum Dweller Social Movement Participation in Urban Africa: A Study of Mobilization in Kurasini, Dar es Salaam

    Hooper, Michael Craig; Ortolano, Leonard
    This paper examines what motivates the participation of African slum(1) dwellers in urban social movement activities. This issue is analyzed through a case study of grassroots mobilization around evictions in Kurasini ward, Dar es Salaam, Tanzania. The paper uses an analytic narrative approach to account for patterns in participatory behaviour, drawing on both quantitative and qualitative data gathered through interviews with 81 slum dwellers. The study shows that, contrary to the expectations of movement leaders, property owners were significantly more likely than renters to participate in a risky and time-consuming mobilization effort. The study identifies three factors that favoured owner...

  12. Revitalizando Ciudades: MejorandoViviendas y Barrios desde la Cuadra a la Metrópolis

    Forsyth, Ann
    Revitalizando Ciudades: Mejorando viviendas y barrios desde la cuadra a la metrópolis, enfatiza ejemplos internacionales y mexicanos e identifica políticas, programas y estrategias de planeación para implementar las políticas de vivienda mexicanas del 2012.

  13. Revitalizing Places: Improving Housing and Neighborhoods from Block to Metropolis.

    Forsyth, Ann
    Revitalizing Places emphasizes international and Mexican experiences and identifies potential policies, programs, planning approaches, and tools to help implement the far-reaching 2012 Mexican housing and urban development policy.

  14. Comparing Modes of Operation for Residential Ceiling Fans to Achieve Thermal Destratification

    Samuelson, Holly Wasilowski

  15. Identifying Non-Technical Barriers to Energy Model Sharing and Reuse

    Holly W. Samuelson, Andrew; Reinhart, Christoph

  16. Post-Occupancy Evaluation and Partial-Calibration of 18 Design-Phase Energy Models

    Holly W. Samuelson, Arash; Reinhart, Christoph

  17. Parametric Energy Simulation of High-Rise Multi-Family Housing

    Goyal, Apoorv; Claussnitzer, Sebastian; Romo-Castillo, Alejandra; Chen, Yujiao; Bakshi, Arpan; Samuelson, Holly Wasilowski

  18. Integrated Workflow and a New Tool for Urban Rainwater Management

    Chen, Yujiao; Samuelson, Holly Wasilowski; Davila, Carlos

  19. Learning by playing – teaching energy simulation as a game

    Reinhart, Christoph F.; Dogan, Timur; Ibarra, Diego; Samuelson, Holly Wasilowski

  20. Non-technical barriers to energy model sharing and reuse

    Samuelson, Holly Wasilowski; Lantz, Andrew; Reinhart, Christoph F.

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