Entity

Time filter

Source Type

Charlotte, NC, United States

Azarbayjani M.,9201 University City Boulevard
World Renewable Energy Forum, WREF 2012, Including World Renewable Energy Congress XII and Colorado Renewable Energy Society (CRES) Annual Conferen | Year: 2012

This study focuses on investigation of climatic based design for double skin façade system in the Mediterranean Climate. It compares the energy performance of different configuration of double skin facades vs. single skin facade during prevailing summer, winter and shoulder season. The double-skin façade is an architectural phenomenon driven by the aesthetic desire for an all-glass façade and the practical desire to have natural ventilation for improved indoor air quality in buildings. Until recently the use of double-skin facades had become more popular in many buildings in Europe. While a great deal of interest exists in learning how to integrate DSFs into our current architecture, there is a little knowledge or demonstration of how the concept might work. The primary goal of this research is to clarify the energy and ventilation performance of DSFs, so that designers can assess the value of these building concepts in meeting design goals for energy efficiency, ventilation, productivity, and sustainability. Copyright © (2012) by American Solar Energy Society.


Schmidt A.G.,University of Southern California | Steiner N.,University of Southern California | French M.,University of Southern California | Sass R.,9201 University City Boulevard
International Journal of Reconfigurable Computing | Year: 2012

Designing hardware cores for FPGAs can quickly become a complicated task, difficult even for experienced engineers. With the addition of more sophisticated development tools and maturing high-level language-to-gates techniques, designs can be rapidly assembled; however, when the design is evaluated on the FPGA, the performance may not be what was expected. Therefore, an engineer may need to augment the design to include performance monitors to better understand the bottlenecks in the system or to aid in the debugging of the design. Unfortunately, identifying what to monitor and adding the infrastructure to retrieve the monitored data can be a challenging and time-consuming task. Our work alleviates this effort. We present the Hardware Performance Monitoring Infrastructure (HwPMI), which includes a collection of software tools and hardware cores that can be used to profile the current design, recommend and insert performance monitors directly into the HDL or netlist, and retrieve the monitored data with minimal invasiveness to the design. Three applications are used to demonstrate and evaluate HwPMI's capabilities. The results are highly encouraging as the infrastructure adds numerous capabilities while requiring minimal effort by the designer and low resource overhead to the existing design. © 2012 Andrew G. Schmidt et al.


Howard I.L.,Mississippi State University | Warren K.A.,9201 University City Boulevard
International Journal of Pavement Research and Technology | Year: 2011

Variability analysis is used for an instrumented pavement consisting of a thin asphalt surface, granular base, geosynthetics, and a fine grained subgrade. The pavement was modeled with the finite element method using Plaxis software where stationary transient loading and stress dependent material models were incorporated. The results show how significant variability can occur within a pavement built to acceptable standards and that without methods to account for variability, instrumented measurements can be misleading in some instances. Realizing that variability is present is far removed from accounting for it effectively. Asphalt strain changes from 8% to 141% were calculated due to the effects of variability, and vertical sensor positioning within customary installation tolerances was shown to vary strain by ± 31%. The use of asphalt strain gauges in thin flexible pavements was shown to be highly prone to error, with variability easily dominating the measurement. Subgrade stress changes from 17% to 45% were calculated from the effects of variability, and vertical sensor positioning with customary installation tolerances was shown to vary pressure by ±3%. Subgrade stress variability was less relative to asphalt strain, though it was too high to neglect in analysis. © Chinese Society of Pavement Engineering.


Aday R.,Middle Tennessee State University | Farney L.,9201 University City Boulevard
Journal of Bioethical Inquiry | Year: 2014

The problem of providing mandated medical care has become commonplace as correctional systems in the United States struggle to manage unprecedented increases in its aging prison population. This study explores older incarcerated women’s perceptions of prison health care policies and their day-to-day survival experiences. Aggregate data obtained from a sample of 327 older women (mean age = 56) residing in prison facilities in five Southern states were used to identify a baseline of health conditions and needs for this vulnerable group. With an average of 4.2 chronic health conditions, frequently histories of victimization, and high rates of mental health issues, the women’s experiences of negotiating health care was particularly challenging. By incorporating the voices of older women, we expose the contradictions, dilemmas, and obstacles they experience in their attempts to obtain health care. It is clear from the personal accounts shared that, despite court mandates, penal harm practices such as delaying or denying medical treatment as well as occasional staff indifferences are common in women’s prisons. With older women having the greatest need for health care, an age- and gender-sensitive approach is recommended. © 2014, Journal of Bioethical Inquiry Pty Ltd.


Morse E.P.,9201 University City Boulevard | Srinivasan V.,U.S. National Institute of Standards and Technology
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture | Year: 2013

Size is a fundamental descriptor of objects-it allows us to quantify "how big" objects are and to compare and classify objects based on this notion. In the world of International Organization for Standardization Geometrical Product Specification and Verification, size is defined much more narrowly: it is restricted to features of size, and the methods of inducing size values from an actual workpiece are strictly controlled. The release of ISO 14405-1:2010 has introduced a rich new set of size specification modifiers, which includes two-point and spherical local sizes, least squares, maximum inscribed and minimum circumscribed associations, as well as calculated diameters (inferred from the circumference, area, or volume of the feature of interest). Further modifiers allow the specification of statistics of local size measurements, such as maximum, minimum, range, average, and others. This article will present "size" as a fundamental engineering notion from several viewpoints and trace its evolution in engineering drawings. It will then discuss the implications of the use of the recently standardized size modifiers in engineering design and investigate the issues that may arise in the application and interpretation of these extensions to size. © IMechE 2012.

Discover hidden collaborations