The Architect\u27s Work: David Adjaye Interview

The Syracuse University School of Architecture: The Architect\u27s Work Series | April 18 - May 27 2005. Interview of David Adjaye by Scott Ruff

Survey Analysis of the Council Bluffs Senior Citizens\u27 Center Programs and Participants

In the summer of 1984, representatives of the Council Bluffs Senior Citizens Center requested assistance from the Center for Applied Urban Research to analyze their program offerings and attendance. The request resulted in two types of assistance. First, working with volunteers and staff, two students from the University of Nebraska at Omaha compiled existing information on Senior Center usage. These efforts resulted in a computerized list of about 700 users by the types of activities in which they participated. This list is to be used when sending program information to participants. Automation allows sorting in order to select users according to participation in programs/activities. In this way, if information is to be sent to those who participate in bridge lessons, for example, that mailing list can be obtained independently of other information. Mailing and printing costs can thus be controlled by selectively mailing information to former participants and presumably those who are most interested. (In addition, the evaluation form from which information was compiled was modified in order to improve the quality of information gathered.

Buoyancy Effects on Concurrent Flame Spread Over Thick PMMA

The flammability of combustible materials in a spacecraft is important for fire safety applications because the conditions in spacecraft environments differ from those on earth. Experimental testing in space is difficult and expensive. However, reducing buoyancy by decreasing ambient pressure is a possible approach to simulate on-earth the burning behavior inside spacecraft environments. The objective of this work is to determine that possibility by studying the effect of pressure on concurrent flame spread, and by comparison with microgravity data, observe up to what point low-pressure can be used to replicate flame spread characteristics observed in microgravity. Specifically, this work studies the effect of pressure and microgravity on upward/concurrent flame spread over 10 mm thick polymethyl methacrylate (PMMA) slabs. Experiments in normal gravity were conducted over pressures ranging between 100 and 40 kPa and a forced flow velocity of 200 mm/s. Microgravity experiments were conducted during NASAs Spacecraft Fire Experiment (Saffire II), on board the Cygnus spacecraft at 100 kPa with an air flow velocity of 200 mm/s. Results show that reductions of pressure slow down the flame spread over the PMMA surface approaching that in microgravity. The data is correlated in terms of a non-dimensional mixed convection analysis that describes the convective heat transferred from the flame to the solid, and the primary mechanism controlling the spread of the flame. The extrapolation of the correlation to low pressures predicts well the flame spread rate obtained in microgravity in the Saffire II experiments. Similar results were obtained by the authors with similar experiments with a thin composite cotton/fiberglass fabric (published elsewhere). Both results suggest that reduced pressure can be used to approximately replicate flame behavior of untested gravity conditions for the burning of thick and thin solids. This work could provide guidance for potential ground-based testing for fire safety design in spacecraft and space habitats

A Housing Allocation Formula for Nebraska Cities of the First Class: City of Bellevue, 1978

The Federal government, through its various agencies, has sponsored many different housing programs in recent years. Each. new and revised program requires state and local officials to re-examine the total housing situation within their jurisdictions. Their eligibility for Federal funding is dependent upon their re-examination of the types of housing needs in their areas, the magnitude of each need category, and the data available to document their needs. Therefore, it is desirable (if not necessary) to develop a standardized procedure by which appropriate needs can be identified, analyzed, and balanced among housing types, household types, and areas

On Simulating Concurrent Flame Spread in Reduced Gravity by Reducing Ambient Pressure

The flammability of combustible materials in spacecraft environments is of importance for fire safety applications because the environmental conditions can greatly differ from those on earth, and a fire in a spacecraft could be catastrophic. Moreover, experimental testing in spacecraft environments can be difficult and expensive, so using ground-based tests to inform microgravity tests is vital. Reducing buoyancy effects by decreasing ambient pressure is a possible approach to simulate a spacecraft environment on earth. The objective of this work is to study the effect of pressure on material flammability, and by comparison with microgravity data, determine the extent to which reducing pressure can be used to simulate reduced gravity. Specifically, this work studies the effect of pressure and microgravity on upward/concurrent flame spread rates and flame appearance of a burning thin composite fabric made of 75% cotton and 25% fiberglass (Sibal). Experiments in normal gravity were conducted using pressures ranging between 100 and 30 kPa and a forced flow velocity of 20 cm/s. Microgravity experiments were conducted during NASAs Spacecraft Fire Experiment (Saffire), on board of the Orbital Corporation Cygnus spacecraft at 100 kPa and an air flow velocity of 20 cm/s. Results show that reductions of ambient pressure slow the flame spread over the fabric. As pressure is reduced, flame intensity is also reduced. Comparison with the concurrent flame spread rates in microgravity show that similar flame spread rates are obtained at around 30 kPa. The normal gravity and microgravity data is correlated in terms of a mixed convection non-dimensional parameter that describes the heat transferred from the flame to the solid surface. The correlation provides information about the similitudes of the flame spread process in variable pressure and reduced gravity environments, providing guidance for potential on-earth testing for fire safety design in spacecraft and space habitats

Technology Development for Fire Safety in Exploration Spacecraft and Habitats

Fire during an exploration mission far from Earth is a particularly critical risk for exploration vehicles and habitats. The Fire Prevention, Detection, and Suppression (FPDS) project is part of the Exploration Technology Development Program (ETDP) and has the goal to enhance crew health and safety on exploration missions by reducing the likelihood of a fire, or, if one does occur, minimizing the risk to the mission, crew, or system. Within the past year, the FPDS project has been formalized within the ETDP structure and has seen significant progress on its tasks in fire prevention, detection, and suppression. As requirements for Constellation vehicles and, specifically, the CEV have developed, the need for the FPDS technologies has become more apparent and we continue to make strides to infuse them into the Constellation architecture. This paper describes the current structure of the project within the ETDP and summarizes the significant programmatic activities. Major technical accomplishments are identified as are activities planned for FY07

Scaling Methods for Simulating Aircraft In-Flight Icing Encounters

This paper discusses scaling methods which permit the use of subscale models in icing wind tunnels to simulate natural flight in icing. Natural icing conditions exist when air temperatures are below freezing but cloud water droplets are super-cooled liquid. Aircraft flying through such clouds are susceptible to the accretion of ice on the leading edges of unprotected components such as wings, tailplane and engine inlets. To establish the aerodynamic penalties of such ice accretion and to determine what parts need to be protected from ice accretion (by heating, for example), extensive flight and wind-tunnel testing is necessary for new aircraft and components. Testing in icing tunnels is less expensive than flight testing, is safer, and permits better control of the test conditions. However, because of limitations on both model size and operating conditions in wind tunnels, it is often necessary to perform tests with either size or test conditions scaled. This paper describes the theoretical background to the development of icing scaling methods, discusses four methods, and presents results of tests to validate them

New High-Value Housing in Douglas County: An Analysis

Understanding the contemporary housing market or submarkets requires knowledge of the current supply of and demand for housing stock. The purpose of this study is threefold: 1) to determine the current supply of lots and platting trends, 2) to characterize the occupants of new higher value housing through the use of census data, and 3) to estimate growth and locational preference of managerial personnel through a survey of large employers

Effect of X-irradiation (post larvation) on development, mortality and antigenicity of Ascaridia galli (Schrank, 1788)

Call number: LD2668 .T4 1966 R923Master of Scienc

A Roman Ship Scuttled near Salona in the Gulf of Kaštela, Croatia: Excavation, Reconstruction and Analysis

Salona (near present-day Split, Croatia), originally an Illyrian city with Greek presence along the eastern Adriatic coast, was conquered by Republican Rome in 76 BCE. Based on its central location in Roman Dalmatia, coupled with a protected harbor in the eastern Gulf of Kaštela and a connection to the hinterlands through the mountain pass of Klis, Salona was the natural choice for the location of the provincial capital. In 2002, the recovery of a 1000-liter perforated dolium in the Trstenik section of Kaštel Sućurac, only three kilometres from the ancient city walls of Salona, attracted the attention of archaeologists to significant Roman remains submerged near shore. In 2006 the outline of a wooden ship was identified, scuttled alongside a submerged wooden wall. In 2015, the ship was uncovered, labelled, recorded using photogrammetry, extensively sampled, then reburied for preservation in situ. Without completely excavating the wreck, obtaining detailed measurements of all its timbers and conserving the wood remains, the analysis of the wreck and the reconstruction of the hull would depend on its investigation using various computer methods. First, a 3-D model of the ship’s remains was generated using Agisoft PhotoScan. Based on this archaeological data, site plans were generated in ArcGIS to document the wreck. Analysis of the hull remains determined the ship to be a flat-floored, mortise-and-tenon constructed ship, dated to approximately the late 1st century CE and suitable for transport of heavy cargo, reflecting the apex of Imperial Rome’s influence on the eastern coast of the Adriatic Sea. A reconstruction of the ship’s hull was undertaken in the Rhinoceros 3D modelling program by combining preserved hull curvatures, the full extent of wooden remains exposed on the seabed, and hypothetical hull height based on a review of contemporaneous ships. The Rhinoceros plug-in modules utilized to perform this reconstruction include an iterative draft and displacement calculator, which estimates the Trstenik ship displaced approximately 25 tons. This technique is suitable for extrapolation to other ancient wrecks recorded only by photogrammetry