Architecture Commons^™

Effects Of Inclusion Shapes Within Rigid Porous Materials On Acoustic Performance, Hyun Hong, Siu-Kit Lau

Durham School of Architectural Engineering and Construction: Faculty Publications

The present study investigates the influence of various shapes of inclusions having same volume embedded in a porous rigid material. Previous studies showed improvement of the broadband sound absorption with particular shapes of inclusions. However, different volumes of the inclusions have been considered; therefore, the bulk densities are not the same for comparison. The present study extends the investigations of inclusions in porous materials with same volume (or bulk density) to eliminate the influence by the change of bulk density. The effects of shape will be discussed. Finite element modeling will be used for this study. Total four different shapes: …

Impacts Of Ventilation Ratio And Vent Balance On Cooling Load And Air Flow Of Naturally Ventilated Attics, Shimin Wang, Zhigang Shen

Durham School of Architectural Engineering and Construction: Faculty Publications

The impacts of ventilation ratio and vent balance on cooling load and air flow of naturally ventilated attics are studied in this paper using an unsteady computational fluid dynamics (CFD) model. Buoyancy-driven turbulent ventilations in attics of gable-roof residential buildings are simulated for typical summer conditions. Ventilation ratios from 1/400 to 1/25 combined with both balanced and unbalanced vent configurations are investigated. The modeling results show that the air flows in the attics are steady and exhibit a general streamline pattern that is qualitatively insensitive to the variations in ventilation ratio and vent configuration. The predicted temperature fields are characterized …

The Impact Of Roof Pitch And Ceiling Insulation On Cooling Load Of Naturally-Ventilated Attics, Shimin Wang, Zhigang Shen, Linxia Gu

Durham School of Architectural Engineering and Construction: Faculty Publications

A 2D unsteady computational fluid dynamics (CFD) model is employed to simulate buoyancy-driven turbulent ventilation in attics with different pitch values and ceiling insulation levels under summer conditions. The impacts of roof pitch and ceiling insulation on the cooling load of gable-roof residential buildings are investigated based on the simulation of turbulent air flow and natural convection heat transfer in attic spaces with roof pitches from 3/12 to 18/12 combined with ceiling insulation levels from R-1.2 to R-40. The modeling results show that the air flows in the attics are steady and exhibit a general streamline pattern that is qualitatively …

Development And Evaluation Of A Simplified Modeling Approach For Hydraulic Systems, Yuebin Yu, Vivian Loftness, Daihong Yu, Yan Lu, Volker Hartkopf

Durham School of Architectural Engineering and Construction: Faculty Publications

This paper presents how a hydraulic system can be properly modeled for hydraulic balancing, knowledge of flow distribution, coupled simulation, and evaluation of control, etc. It focuses on water-based heating and cooling systems, which generally have high energy efficiency in design but could perform poorly in reality due to the undersensing condition and strong thermal-hydraulic coupling. The study introduces the motivation, presents the simplified modeling methodology, and illustrates the model and simulating structure. A preliminary evaluation of the method is conducted with two simple simulations. The proposed “node-branch-state” modeling approach could be easily modified, expanded and integrated into a detailed …

Framing Emotive And Perspective Space : The Sundance Center For The Exhibition And Study Of Film, Joshua Stiling

Architecture Theses and Projects

A “Bauhaus” of academic programs including film studies, neurology, and psychology, use a museum and exhibition venue for the Sundance Film Festival in order to study the effects of visual recognition on the way we perceive and how it affects emotion, framing architectural perspective using film making techniques.

New Urban Living: High-Rise Vertical Farming In A Mixed Use Building, Boston, Ma, Zachary Silvia

Architecture Theses and Projects

The focus of the project is the combination of vertical farming and living in a structure that provides for itself and the surrounding community. Essentially, the result is communal living through vertical farming. To raise awareness and invite surrounding neighbors and workers into the process, the first four floors are dedicated to social interaction and a display of the systems at use. Along the path from a public market, to a café, and finally to a gathering space, visitors walk along a ramp/display of the aquaponic system.

Nature And Architecture: A Holistic Response, Jarrod Martin

Architecture Theses and Projects

The general functions of the project will be a natural healing center and research facility for natural medicine. As medical practice and theory begin to shift in the understanding on natural treatment, modern medicine facilities are becoming more environmentally friendly. Hospitals are pursuing sustainable practices as well as seeking LEED certification in the United States. Although LEED is not a necessity for this project, the natural healing center will focus on holistic care as the primary medical treatment option for patients while engaging the project in sustainable design.

Lam: Laughing My Architecture Of, Elizabeth Straub

Architecture Theses and Projects

Architecture gives the perfect opportunity to join people together with humor and laughter. Through creating a space for a community of comedians to work together, this project will not only bring joy to those who come to see the acts, but also create a sense of community and home for the comedians who work and perform there.

This architecture should not only fill the needs for the program elements, but also bring a sense of wonderment and creativity to inspire those who are there. Though the building does not need to be a pun or a joke in itself, it …

Boston_Sound_Center, Michael Frase

Architecture Theses and Projects

This thesis questions the connection between what we hear and what we see with regards to spatial conception. The purpose is to discover the importance of sound in spatial representation and to understand the implications of sound based design.

Environmental Architecture: Environmental Discovery Center On The Woonasquatucket River, Nathan Bonaiuto

Architecture Theses and Projects

The Woonasquatucket River Environmental Discovery Center (WREDC) is a place where students of the environment can enjoy a natural space within their own community. It provides a much needed connection to a site which, for far too long has been off limits to the community. As a potential learning environment for young students, the WREDC becomes a platform for a sustainable lifestyle. In this place we learn about the past, connect it to the present, and allow for change in the future.

This thesis is about making these connections of past and future through the current constructs of the Social, …

Transport Manager Responsibilities And Risk Based Insurance Analysis, Ivana Simkova

Open Access Theses & Dissertations

This thesis addresses the issue of the responsibility of the transport manager. The transport manager´s conditions which have to be respected during his/ her work are analyzed. The transport manager is responsible for the decisions made during the whole transportation process. Individual decisions are evaluated and a probabilistic estimate of their importance is determined. A methodology for insurance for the transport manager is proposed.

Neighborhood Crime And Travel Behavior: An Investigation Of The Influence Of Neighborhood Crime Rates On Mode Choice – Phase Ii, Christopher Ferrell, Shishir Mathur

Faculty Publications, Urban and Regional Planning

No abstract provided.

Mathematical Modelling Of A Low Approach Evaporative Cooling Process For Space Cooling In Buildings, Medhi Nasrabadi, Donal Finn, Ben Costelloe

Conference Papers

This paper describes a mathematical model of a low approach open evaporative cooling tower for the production of high temperature indirect cooling water (14-16°C) for use in building radiant cooling and displacement ventilation systems. There are several potential approaches to model evaporative cooling, including: the Poppe method, the Merkel method and the effectiveness-NTU (ε-NTU) method. A common assumption, applied to the Merkel and ε-NTU methods, is that the effect of change in tower water mass flow rate due to evaporation is ignored, which results in a simpler model with reduced computational requirements, but with somewhat decreasedaccuracy. In this paper, a …

49 | Mary’S Well, Nazareth: The Late Hellenistic To The Ottoman Periods, Yardenna Alexandre

IAA Reports—Monograph Series of the Israel Antiquities Authority

The ancient spring of Nazareth is associated with Mary, Mother of Jesus, and has been a site of pilgrimage for centuries. Excavations in its vicinity revealed remains from two millennia of Nazareth’s history, mainly from the Crusader period when an elaborate fountain house was erected, and the Mamluk period, when significant alterations were made to it.

Breaking Internal Waves On A Shelf Slope Using Numerical Simulations, Subhas K. Venayagamoorthy, Oliver B. Fringer

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The subject of internal waves interacting with bottom topographic features in the ocean has received much attention in the past few decades. This heightened interest is mainly due to a conjecture that breaking internal waves at boundaries can be a significant source of turbulence, leading to mixing and transport in the ocean. In this paper, we present results from high-resolution three-dimensional numerical simulations of an internal wave interacting with a shelf break in a linearly stratified fluid in order to highlight the instabilities that contribute to wave breaking over topography. The results show the development of a nonlinear internal bolus …

Long-Term Performance Of Passive Materials For Removal Of Ozone From Indoor Air, C. J. Cros, Glenn C. Morrison, J. A. Siegel, R. L. Corsi

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

The health effects associated with exposure to ozone range from respiratory irritation to increased mortality. in this paper, we explore the use of three green building materials and an activated carbon (AC) mat that remove ozone from indoor air. We studied the effects of long-term exposure of these materials to real environments on ozone removal capability and pre- and post-ozonation emissions. a field study was completed over a 6-month period, and laboratory testing was intermittently conducted on material samples retrieved from the field. the results show sustained ozone removal for all materials except recycled carpet, with greatest ozone deposition velocity …

Shake Table Testing Of A Utility-Scale Wind Turbine, Ian Prowell, Chia Ming Uang, Ahmed Elgamal, J. Enrique Luco, Lanhui Guo

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Shake table tests were undertaken on a full-scale wind turbine (65-kW rated power, 22.6-m hub height, and 16-m rotor diameter) using the Network for Earthquake Engineering Simulation Large High Performance Outdoor Shake Table at the University of California, San Diego. Structural response characteristics and modal parameters are presented for base shaking imparted in two configurations, both parallel (configuration 1) and perpendicular (configuration 2) to the axis of rotation of the rotor. Results are summarized for a series of progressively stronger motions imparted in configuration 1, with analysis identifying damage sources leading to an overall loss in stiffness. Two sources of …

Deciphering The Cultural Heritage And Function Of The Ella Strong Denison Library Complex, Sara E. Zúñiga

Scripps Senior Theses

To be submitted.

Life Cycle Cost Analysis Under Ireland's Capital Works Management Framework, Dermot Kehily, Alan Hore

Conference papers

The Capital Works Management Framework (CWMF) is a structure that has been developed to deliver the Irish government’s objectives in relation to public sector construction procurement reform. This research provides practical guidance and assistance for construction cost professionals in carrying out Whole Life Cycle Cost Analysis (WLCCA) and producing Life Cycle Cost Models(LCCMs) under the CWMF. The research outlines how LCCA calculations can be carried out for cost planning purposes and recommends a standard methodology for presenting LCCMs under the CWMF. The CWMF states that Whole Life Costs (WLC) are an important consideration throughout the design process and should be …

Slimplexity: A Glimpse Inside The Hive Mind Of Snohetta, Noel Brady

Articles

Simplexity is an interview with Craig Dykers cofounder of Snohetta. The firm has a unique structure in Architecture circles with a Hive Mind like structure. In addition its parallel interests in Architecture and Landscape Design has meant that both professional strands have equal parity in the firms operation.

2:1 The Paper Tube Project, Noel Brady

Articles

Review of applied technological solution to rapid building techniques using paper tube and analogous materials to create space enclosing geodesic systems.

Patterns Of Thought, Noel Brady

Other resources

No abstract provided.

An Improved Prediction Model For Spacecraft Damage Following Orbital Debris Impact, Joel E. Williamsen, William P. Schonberg

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper offers a new set of 'generic', data-Based hole size and crank length prediction models for spherical orbital debris particles impacting multi-plate targets at velocities up to ~12 km/s. the equations are applicable to a wide variety of spacecraft target configurations, but are limited to hole sizes above, but relatively near, the ballistic limit of the impacting particles. Additional work is underway to expand these models to diameters farther above the ballistic limit for the described shield types.

Effects Of Nano-Copper(Ii) Oxide And Nano- Magnesium Oxide Particles On Activated Sludge, Guoqiang Liu, Jianmin Wang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Effects of nano-copper (II) oxide (nano-CuO) and nano-magnesium oxide (nano-MgO) particles on activated sludge endogenous respiration (aerobic digestion), biochemical oxygen demand (BOD) biodegradation, and nitrification were investigated through respiration rate measurement. for comparison, the effects of Cu (II) and Mg (II) ions on activated sludge were also studied. Results indicated that soluble Cu (II) has half maximum inhibitory concentration (IC50) values of 19, 5.5, 53, and 117 mg Cu/L for endogenous respiration, BOD biodegradation, ammonium oxidation, and nitrite oxidation, respectively. However, nano-CuO only inhibited BOD biodegradation at 240 mg Cu/L or more, and its associated toxicity was primarily caused by …

An Empirical Study Of Particulate Matter Exposure For Transit Users At Bus Stop Shelters, Adam Moore

Dissertations and Theses

Congested traffic corridors in dense urban areas are key contributors to the degradation of urban air quality. While waiting at bus stops, transit patrons may be exposed to greater amounts of vehicle-based pollution, including particulate matter, due to their proximity to the roadway. Current guidelines for the location and design of bus stops do not take into account air quality or exposure considerations. This thesis provides a unique contribution to roadside air quality studies and presents an innovative method for the consideration of bus shelter placement. Exposure to roadside pollutants is estimated for transit riders waiting at three-sided bus stop …

Working With The Territory: Strategies For The New Territorialities / Travailler Avec Le Territoire : Stratégies Pour Les Nouvelles Territorialités, Carles Llop Torné, Stéphane Bosc

Books and Monographs

Metropolisation and urban sprawl are recurrences of recent developments in European territories, and particularly the Mediterranean. However, these phenomena often oppose the idea of environmental conservation and respect for natural and economic equilibriums. CREPUD-MED has allowed a group of European experts, local elected officials, academics, architects, planners, geographers, sociologists… to combine their skills and to question the notion of territorial development understood as a “project-process.” Four case-studies of four European regions are presented within: Val de Durance (Région Provence-Alpes-Côte d'Azur), Funo (Provincia di Bologna), Metropolitan Region of Barcelona and Eleonas (Athens); in the form of an atlas, as a knowledge …

Sprawl In Canada And The United States, Michael Lewyn

Scholarly Works

The purpose of this Article is to ascertain whether (1) suburban sprawl is as widespread in Canadian metropolitan areas as in their American counterparts, and (2) Canadian government policies, and in particular Canadian zoning law and transportation policies, encourage sprawl. The article concludes that Canadian metropolitan areas are in fact somewhat less sprawling than most of their American counterparts, but that in Canada, as in the United States, government land use regulation and government transportation policy do favor sprawl to some extent. For example, in both nations municipal zoning regulations, by limiting density and forcing landowners to build parking lots, …

Walking In The Land Of Cars: Automobile-Pedestrian Accidents In Hillsborough County, Florida, Marc Aaron Poling

USF Tampa Graduate Theses and Dissertations

Analyses of traffic accidents are often focused on the characteristics of the accident event and hence do not take into account the broader neighborhood contexts in which accidents are located. This thesis seeks to extend empirical analyses of accidents by understanding the link between accidents and their surroundings. The case study for this thesis is Hillsborough County, Florida, within which the city of Tampa is located. The Tampa Bay region ranks very high in terms of accident rates within U.S. metropolitan areas and is also characterized by transport policies which favor private automobiles over mass transit options, making it an …

Advancing The Human Right To Housing In Post-Katrina New Orleans: Discursive Opportunity Structures In Housing And Community Development, Leigh Graham

Publications and Research

In post-Katrina New Orleans, housing and community development (HCD) advocates clashed over the future of public housing. This case study examines the evolution of and limits to a human right to housing frame introduced by one nongovernmental organization (NGO). Ferree’s concept of the discursive opportunity structure and Bourdieu’s social field ground this NGO’s failure to advance a radical economic human rights frame, given its choice of a political inside strategy that opened up for HCD NGOs after Hurricane Katrina. Strategic and ideological differences within the field limited the efficacy of this rights-based frame, which was seen as politically radical and …

Razing Lafitte: Defending Public Housing From A Hostile State, Leigh Graham

Publications and Research

The contentious politics of the demolition of Lafitte public housing in post- Katrina New Orleans and its replacement with mixed-income properties is a telling case of the strategic conflicts housing advocates face in public housing revitalization. It reveals how the qualified outcomes of HOPE VI interact with local institutional and historical circumstances to confound the equity and social justice goals of housing and community development advocates. It shows the limits to public housing revitalization as an urban recovery strategy when hostile government leadership characterizes a region, and the state is recast as an adversary rather than revitalization partner. This case …