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Articles 2101 - 2130 of 10504
Full-Text Articles in Engineering
Active Transportation, Spring/Summer 2012, Issue 26
Active Transportation, Spring/Summer 2012, Issue 26
Sustain Magazine
No abstract provided.
Heat Islands, Fall/Winter 2014, Issue 29
Sustainable Behavior, Spring/Summer 2013, Issue 28
Sustainable Behavior, Spring/Summer 2013, Issue 28
Sustain Magazine
No abstract provided.
Local Foods, Fall/Winter 2013, Issue 27
Campus Sustainability, Spring/Summer 2014, Issue 30
Campus Sustainability, Spring/Summer 2014, Issue 30
Sustain Magazine
No abstract provided.
17-09 Assessing The Impact Of Air Pollution On Public Health Along Transit Routes, Stephen Mattingly, Kyung (Kate) Hyun, Shirin Kamali Rad, Mehrdad Arabi, Sina Famili
17-09 Assessing The Impact Of Air Pollution On Public Health Along Transit Routes, Stephen Mattingly, Kyung (Kate) Hyun, Shirin Kamali Rad, Mehrdad Arabi, Sina Famili
Transportation Research Center Reports
Transportation sources account for a large proportion of the pollutants found in most urban areas. Also, transportation activity and intensity appear likely to contribute to the risk of respiratory disease occurrence. This research investigates the impacts of transportation, urban design and socioeconomic characteristics on the risk of air pollution-related respiratory diseases in two of the biggest MSAs (Metropolitan Statistical Areas) in the US, Dallas-Fort Worth (DFW) and Los Angeles at the block group (BG) level, by considering the US Environmental Protection Agency’s respiratory hazard quotient (RHQ) as the dependent variable. The researchers identify thirty candidate indicators of disease risk from …
Analyzing Failure Classifications For Patterns And Trends, Casey Eaton, Amanda Banks
Analyzing Failure Classifications For Patterns And Trends, Casey Eaton, Amanda Banks
Von Braun Symposium Student Posters
No abstract provided.
Application Of Acquisition Theory, Elizabeth Rose Cavin, Hillary Palmer, Paul Collopy
Application Of Acquisition Theory, Elizabeth Rose Cavin, Hillary Palmer, Paul Collopy
Von Braun Symposium Student Posters
No abstract provided.
Synthesis Of Zif-8 For Carbon Dioxide Adsorption, Fausat Isu, Yu Lei
Synthesis Of Zif-8 For Carbon Dioxide Adsorption, Fausat Isu, Yu Lei
Von Braun Symposium Student Posters
No abstract provided.
Experimental And Numerical Analysis Of Quasi-Static Deformation Mechanisms Of Additively Manufactured Lattice Structures, Behzad Bahrami Babamiri
Experimental And Numerical Analysis Of Quasi-Static Deformation Mechanisms Of Additively Manufactured Lattice Structures, Behzad Bahrami Babamiri
Von Braun Symposium Student Posters
No abstract provided.
Seeded Hydrogen In Nuclear Thermal Propulsion (Ntp) Engines, Daria Nikitaeva
Seeded Hydrogen In Nuclear Thermal Propulsion (Ntp) Engines, Daria Nikitaeva
Von Braun Symposium Student Posters
No abstract provided.
An Investigation Of Nasa Affordability Culture And Implications On Engineering Management, Jonathon Sullivan, Christopher White
An Investigation Of Nasa Affordability Culture And Implications On Engineering Management, Jonathon Sullivan, Christopher White
Von Braun Symposium Student Posters
No abstract provided.
Target Detection In Heterogeneous Clutter With Low Resolution Radar, Kyle G. Stankowski
Target Detection In Heterogeneous Clutter With Low Resolution Radar, Kyle G. Stankowski
Theses and Dissertations
This thesis develops a framework for SAR target detection and super-resolution in low-resolution environments. The primary focus in this research is the background clutter heterogeneity that often accompanies low range and cross-range resolutions. A corrective model which accounts for clutter replacement is developed to define the detection and false alarm rates of the detector more accurately than a traditional model in which the radar return from the target supplements the existing clutter. In a heterogeneous clutter cell, the clutter replacement model leverages the different scattering distributions among the individual clutter types to generate a probability distribution function for the areas …
Editorial Introduction To The Northeast Journal Of Complex Systems (Nejcs), Hiroki Sayama, Georgi Georgiev
Editorial Introduction To The Northeast Journal Of Complex Systems (Nejcs), Hiroki Sayama, Georgi Georgiev
Northeast Journal of Complex Systems (NEJCS)
Editorial Introduction to the Northeast Journal of Complex Systems (NEJCS)
Fractality And Power Law Distributions: Shifting Perspectives In Educational Research, Matthijs Koopmans
Fractality And Power Law Distributions: Shifting Perspectives In Educational Research, Matthijs Koopmans
Northeast Journal of Complex Systems (NEJCS)
The dynamical character of education and the complexity of its constituent relationships have long been recognized, but the full appreciation of the implications of these insights for educational research is recent. Most educational research to this day tends to focus on outcomes rather than process, and rely on conventional cross-sectional designs and statistical inference methods that do not capture this complexity. This presentation focuses on two related aspects not well accommodated by conventional models, namely fractality (self-similarity, scale invariance) and power law distributions (an inverse relationship between frequency of occurrence and strength of response). Examples are presented for both phenomena …
Sandy Soil Improvement Through Microbially Induced Calcite Precipitation (Micp) By Immersion, Shihui Liu, Kang Du, Wei Huang, Lin Li
Sandy Soil Improvement Through Microbially Induced Calcite Precipitation (Micp) By Immersion, Shihui Liu, Kang Du, Wei Huang, Lin Li
Civil and Architectural Engineering Faculty Research
The goal of this article is to develop an immersion method to improve the microbially induced calcite precipitation (MICP) treated samples. A batch reactor was assembled to immerse soil samples into cementation media. The cementation media can freely diffuse into the soil samples in the batch reactor instead of cementation media being injected. A full contact flexible mold, a rigid full contact mold, and a cored brick mold were used to prepare different soil sample holders. Synthetic fibers and natural fibers were selected to reinforce the MICP-treated soil samples. The precipitated CaCO3 in different areas of the MICP-treated samples was …
Evaluation Of Varying Surface Finishes On Thin-Walled Blown Powdered Deposition Inconel 625, Noah Naden, Giancarlo Puerto, Judy Schneider
Evaluation Of Varying Surface Finishes On Thin-Walled Blown Powdered Deposition Inconel 625, Noah Naden, Giancarlo Puerto, Judy Schneider
Von Braun Symposium Student Posters
No abstract provided.
Characterization Of A Pulse-Recharge Circuit For Puff, Nathan Schilling
Characterization Of A Pulse-Recharge Circuit For Puff, Nathan Schilling
Von Braun Symposium Student Posters
No abstract provided.
Design And Development Of An Autonomous Return Vehicle, Sean Widmier, An Nguyen, Colin Oberthur, Sean Mitchell, Fred Snopl
Design And Development Of An Autonomous Return Vehicle, Sean Widmier, An Nguyen, Colin Oberthur, Sean Mitchell, Fred Snopl
Von Braun Symposium Student Posters
No abstract provided.
Evaluation And Demonstration Of Take Home Laboratory Kit, J. A. Rossiter, S. A. Pope, B. Ll. Jones, John Hedengren
Evaluation And Demonstration Of Take Home Laboratory Kit, J. A. Rossiter, S. A. Pope, B. Ll. Jones, John Hedengren
Faculty Publications
This paper discusses some of the reasons for producing take home laboratory kits. This is then supplemented by detailed presentation of three different types of take home kit, alongside the motivations for their design and an evaluation of their efficacy with students.
Experimental Calibration Of Centrally Loaded Built-Up Battened Compression Members, Ghada El-Mahdy Ph.D., P.Eng.
Experimental Calibration Of Centrally Loaded Built-Up Battened Compression Members, Ghada El-Mahdy Ph.D., P.Eng.
Civil Engineering
There is a large diversity in the requirements for designing built-up compression members between international design codes. Most codes, including the North American standards and specifications specify the use of an equivalent or modified slenderness ratio. In general, all North American standards and specifications agree on the need of using a modified slenderness ratio, but differ in the factor used to multiply the local slenderness ratio. Theoretically it is difficult to estimate the exact value of this factor, and using experimental methods does not capture the exact value of this factor either. Hence, a different approach is needed to determine …
Adaptive-Hybrid Redundancy For Radiation Hardening, Nicolas S. Hamilton
Adaptive-Hybrid Redundancy For Radiation Hardening, Nicolas S. Hamilton
Theses and Dissertations
An Adaptive-Hybrid Redundancy (AHR) mitigation strategy is proposed to mitigate the effects of Single Event Upset (SEU) and Single Event Transient (SET) radiation effects. AHR is adaptive because it switches between Triple Modular Redundancy (TMR) and Temporal Software Redundancy (TSR). AHR is hybrid because it uses hardware and software redundancy. AHR is demonstrated to run faster than TSR and use less energy than TMR. Furthermore, AHR allows space vehicle designers, mission planners, and operators the flexibility to determine how much time is spent in TMR and TSR. TMR mode provides faster processing at the expense of greater energy usage. TSR …
Enabling Mobile Neutron Detection Systems With Clyc, Matthew C. Recker
Enabling Mobile Neutron Detection Systems With Clyc, Matthew C. Recker
Theses and Dissertations
Cs2LiYCl6:Ce3+ (CLYC) has the desirable property of being sensitive to both gamma rays and neutrons while producing waveforms suitable for pulse shape discrimination (PSD) to determine which radiation was detected. This dissertation examines the behavior of CLYC to support its further development for mobile and portable applications. First, the feasibility of performing PSD with CLYC and an inexpensive data acquisition system was examined. This system was able to clearly distinguish both events with a figure of merit of 1.42. Next, the performance of a SiPM was compared to a traditional PMT. Analysis showed that the …
Zero Waste, Spring/Summer 2017, Issue 36
Consent Decrees, Fall/Winter 2017, Issue 35
Human Ecology, Spring/Summer 2016, Issue 34
Citizen Science, Fall/Winter 2016, Issue 33
Urban Streams, Spring/Summer 2015, Issue 32
Unconventional Energy, Fall/Winter 2015, Issue 31
Unconventional Energy, Fall/Winter 2015, Issue 31
Sustain Magazine
No abstract provided.