A Junction And Drop-Shaft Boundary Conditions For Modeling Free Surface, Pressurized, And Mixed Free Surface-Pressurized Transient Flows, Arturo S. León, Xiaofeng Liu, Mohamed S. Ghidaoui, Arthur R. Schmidt, Marcelo H. García
Civil Engineering Faculty Publications and Presentations
A junction and drop-shaft boundary conditions (BCs) for one-dimensional modeling of transient flows in single-phase conditions (pure liquid) are formulated, implemented and their accuracy are evaluated using two Computational Fluid Dynamics (CFD) models. The BCs are formulated for the case when mixed flows are simulated using two sets of govern- ing equations, the Saint Venant equations for the free surface regions and the compressible water hammer equations for the pressurized regions. The proposed BCs handle all possible flow regimes and their combinations. The flow in each pipe can range from free surface to pressurized flow and the water depth at ...
Wireless Sensing Without Sensors: An Experimental Study Of Motion/Intrusion Detection Using Rf Irregularity, 2010 Singapore Management University
Wireless Sensing Without Sensors: An Experimental Study Of Motion/Intrusion Detection Using Rf Irregularity, Wei Qi Lee, Winston K. G. Seah, Hwee-Pink Tan, Zexi Yao
Research Collection School Of Information Systems
Motion and intrusion detection are often cited as wireless sensor network (WSN) applications with typical configurations comprising clusters of wireless nodes equipped with motion sensors to detect human motion. Currently, WSN performance is subjected to several constraints, namely radio irregularity and finite on-board computation/energy resources. Radio irregularity in radio frequency (RF) propagation rises to a higher level in the presence of human activity due to the absorption effect of the human body. In this paper, we investigate the feasibility of monitoring RF transmission for the purpose of intrusion detection through experimentation. With empirical data obtained from the Crossbow TelosB ...
Uncertainty In Partially Ordered Sets As A Natural Generalization Of Intervals: Negative Information Is Sufficient, Positive Is Not, 2010 University of Texas at El Paso
Uncertainty In Partially Ordered Sets As A Natural Generalization Of Intervals: Negative Information Is Sufficient, Positive Is Not, David Mireles, Olga Kosheleva
Departmental Technical Reports (CS)
In many real-life applications, we have an ordered set: a set of all space-time events, a set of all alternatives, a set of all degrees of confidence. In practice, we usually only have a partial information about an element x of this set. This partial information includes positive knowledge: that a <= x or x <= a for some known a, and negative knowledge: that it is not true that a <= x or x <= a for some known a. In the case of a total order, the set of all elements satisfying this partial information is an interval. We show that in the general case of a partial order, the corresponding analogue of an interval is a convex set. We also show that in general, to describe partial knowledge, it is sufficient to have only negative information about x but it is not sufficient to have only positive information.
A Use Case-Guided Comparison Of Opm And Pml, 2010 University of Texas at El Paso
A Use Case-Guided Comparison Of Opm And Pml, Paulo Pinheiro Da Silva, Steve Roach
Departmental Technical Reports (CS)
The World Wide Web Consortium (W3C) Provenance Incubator Group has the goal of providing "a state-of-the art understanding ... in the area of provenance for Semantic Web technologies." To enhance the mutual understanding of language capabilities, the group is attempting to map several of the existing provenance languages such as Provenir, PREMIS, and the Proof Markup Language (PML) into the provenance language the Open Provenance Model (OPM). OPM is intended to be a precise inter-lingua for exchanging provenance information. This article contributes to the understanding of the capabilities of OPM and PML by establishing a set of six common and relatively ...
A Hybrid Highly Birefringent Fiber Optic Sensing System For Simultaneous Strain And Temperature Measurement, 2010 Warsaw University of Technology
A Hybrid Highly Birefringent Fiber Optic Sensing System For Simultaneous Strain And Temperature Measurement, Piotr Lesiak, Ginu Rajan, Yuliya Semenova, Gerald Farrell, Anna Boczkowska, Andrzej Domanski, Tomasz Wolinkski
A novel hybrid fiber optic sensor based on integration of polarimetric fiber sensors for simultaneous strain and temperature measurement is presented in this paper. Two types of polarimetric fibers are used: a side-hole fiber and a polarization maintaining photonic crystal fiber. The disadvantage of each sensor type can be overcome by using the sensors in a complementary manner to measure temperature independently from average strain.
Acuta Enews October 2010, Vol 39, No. 10, 2010 University of Nebraska - Lincoln
Acuta Enews October 2010, Vol 39, No. 10
In This Issue
Nominate Now for 2011-2012 Board of Directors
From the President........... Matt Arthur, Washington Univ. in St. Louis, ACUTA President
Nominate Now for ACUTA Institutional Excellence Award
Tech Talk: The Land of Lync'in............... Kevin Tanzillo, Dux PR
FYI: Useful Information from the Campus......... Student Monitor
ACUTA Surveys Voice and Emergency Systems........... Ray Horak, The Context Corporation
Learn More about UC, WiFi, FMC, Green IT and More from Your Desktop
Visit the ACUTA Community Often!
Board Report........... George Denbow, Univ. of Texas, ACUTA Secretary/Treasurer
Washington Update Newsletter
Overheard on the Listserv: It's All about ...
Development Of A Tool For Windfarm Site Analysis In Electrical Networks With High Levels Of Wind Power Generation, 2010 Dublin Institute of Technology
Development Of A Tool For Windfarm Site Analysis In Electrical Networks With High Levels Of Wind Power Generation, Edward Carroll, John Mcgrory
Controlling electrical networks that contain high levels of wind power will be a challenge facing many System Operators in the coming years. The intermittency and uncertainty of the power supplied by wind turbines create difficulties surrounding scheduling of plant, operating reserve and grid integration. The current process for windfarm selection is carried out by an individual stakeholder and lacks the consideration for all other stakeholders involved, which can create problems in the long term when the levels of wind power increase on the network. This paper proposes a collective approach to analysing potential windfarm sites using the key factors which ...
Cluster-Based Distributed Face Tracking In Camera Networks, 2010 Purdue University
Cluster-Based Distributed Face Tracking In Camera Networks, Josiah Yoder, Henry Medeiros, Johnny Park, Avinash Kak
Electrical and Computer Engineering Faculty Research and Publications
In this paper, we present a distributed multicamera face tracking system suitable for large wired camera networks. Unlike previous multicamera face tracking systems, our system does not require a central server to coordinate the entire tracking effort. Instead, an efficient camera clustering protocol is used to dynamically form groups of cameras for in-network tracking of individual faces. The clustering protocol includes cluster propagation mechanisms that allow the computational load of face tracking to be transferred to different cameras as the target objects move. Furthermore, the dynamic election of cluster leaders provides robustness against system failures. Our experimental results show that ...
Forecasting Of Highway Revenues Under Various Options, 2010 Purdue University
Forecasting Of Highway Revenues Under Various Options, Bismark R.D.K. Agbelie, Qiang Bai, Samuel Labi, Kumares C. Sinha
JTRP Technical Reports
Throughout the United States, state highway revenue, which is dominated by receipts from fuel taxes, has failed to keep up with expected investments required for infrastructure preservation and improvement. The reasons for this trend include the increasing fuel efficiency of vehicles, slowing of the growth in vehicle-miles of travel, and the erosion of the purchasing power of the dollar due to inflation. This development motivates highway agencies not only to seek revisions of existing funding structures but also to consider potential alternative sources.
To establish and implement an effective and efficient financing strategy that incorporates potential new funding sources, it ...
Long Term Performance Of A Porous Friction Course, 2010 Purdue University
Long Term Performance Of A Porous Friction Course, Rebecca S. Mcdaniel, Karol J. Kowalski, Ayesha Shah, Jan Olek, Robert J. Bernhard
JTRP Technical Reports
In 2003, the Indiana Department of Transportation and the Federal Highway Administration allowed a test section of Porous Friction Course (PFC) to be placed on I74 east of Indianapolis. The design, construction and early performance of that surface were compared to an adjacent SMA surface and a conventional Superpave HMA surface in a report prepared for the Institute for Safe, Quiet and Durable Highways (1). The early performance indicated that the PFC offered several advantages over the SMA and the conventional surfaces, including reduced tire/pavement noise, high friction and surface texture, and reduced splash and spray. There was a ...
Final Warranty Evaluation I-275 Kenton/Boone Counties Mp 1.06-7.15, 2010 University of Kentucky
Final Warranty Evaluation I-275 Kenton/Boone Counties Mp 1.06-7.15, Tim C. Scully Jr., R. Clark Graves
Kentucky Transportation Center Research Report
The center performed a visual survey on the eastbound and westbound side of the pavement on the warranted section of I-275. The center’s evaluation team looked for any distresses that exceeded the threshold levels outlined in the warranty specification.
Field Scale Evaluation Of Volatile Organic Compound Production Inside Biosecure Swine Mortality Composts, 2010 Iowa State University
Field Scale Evaluation Of Volatile Organic Compound Production Inside Biosecure Swine Mortality Composts, Neslihan Akdeniz, Jacek A. Koziel, Hee-Kwon Ahn, Thomas D. Glanville, Benjamin P. Crawford
Agricultural and Biosystems Engineering Publications
Emergency mortality composting associated with a disease outbreak has special requirements to reduce the risks of pathogen survival and disease transmission. The most important requirements are to cover mortalities with biosecure barriers and avoid turning compost piles until the pathogens are inactivated. Temperature is the most commonly used parameter for assessing success of a biosecure composting process, but a decline in compost core temperature does not necessarily signify completion of the degradation process. In this study, gas concentrations of volatile organic compounds (VOCs) produced inside biosecure swine mortality composting units filled with six different cover/plant materials were monitored to ...
Determining Of The Binder Content Of Hot Mix Asphalt Containing Dolomitic Aggregates Using The Ignition Oven, 2010 Warsaw University of Technology
Determining Of The Binder Content Of Hot Mix Asphalt Containing Dolomitic Aggregates Using The Ignition Oven, Karol K. Kowalski, Rebecca S. Mcdaniel, Jan Olek, Ayesha Shah
JTRP Technical Reports
The binder content of an HMA mix is one of the critical factors affecting the quality of the mix. The ignition oven is one widely used method for determining the binder content, however, its use is problematic with some types of aggregates, including dolomites. With these aggregates, the mass loss continues after the binder is burned off as the aggregates decompose and the test does not terminate at a stable mass. This study investigated the factors that affect this mass loss in problematic aggregates and developed a modified ignition oven procedure to limit this mass loss. The mass loss in ...
Development Of Internally Cured Concrete For Increased Service Life, 2010 Purdue University
Development Of Internally Cured Concrete For Increased Service Life, John Schlitter, Ryan Henkensiefken, Javier Castro, Kambiz Raoufi, Jason Weiss, Tommy Nantung
JTRP Technical Reports
Higher strength, lower water to cement ratio (w/c) concrete has been advocated over the last two decades due to its increased strength and reduced permeability. The lower w/c of these concretes makes them susceptible to autogenous shrinkage. This autogenous shrinkage can be significant and can be a contributing factor to early age cracking. Internal curing was investigated as a potential method to improve the durability of concrete pavements and bridge decks. Prewetted lightweight aggregate was used to supply water to the hydrating cement paste. This additional water can counteract the hindered strength development, suspended hydration, autogenous shrinkage, and ...
A Stochastic Hybrid Embodied Energy And Co2_Eq Intensity Analysis Of Building And Construction Processes In Ireland, 2010 Dublin Institute of Technology
A Stochastic Hybrid Embodied Energy And Co2_Eq Intensity Analysis Of Building And Construction Processes In Ireland, Adolf Acquaye
Given a general lack of research on Irish construction greenhouse gas emissions, a subsectoral embodied carbon dioxide equivalent (CO2-eq) analysis of this sector has been undertaken with the aim of overcoming some methodological challenges such as system boundary constraints, input-output aggregation, double counting of energy inputs and a general lack of data. Using this extended methodology, it is estimated that total embodied CO2-eq intensity of Irish construction in 2005 was 1,364gCO2-eq/€ with direct sub-sectoral embodied CO2-eq intensity averaging 56 gCO2-eq/€. Some 215gCO2-eq/€ is estimated to arise from domestic sources including 160gCO2-eq/€ from domestic indirect emissions. International arising emissions constituted ...
Nanoindentation Of Annealed And As-Sputtered Thin Films Of Nickel Titanium Shape Memory Alloys, 2010 California Polytechnic State University - San Luis Obispo
Nanoindentation Of Annealed And As-Sputtered Thin Films Of Nickel Titanium Shape Memory Alloys, Matthew Tyson Lewis
Master's Theses and Project Reports
The bottom-up processing techniques used for making Microelectromechanical systems (MEMS) devices can produce material properties different from bulk processing. The material properties must be evaluated with the process parameters used and for changes in the process parameters. The mechanical properties are needed to design MEMS devices. A material of interest for MEMS devices is nickel titanium (NiTi) shape memory alloy (SMA) because of the high work output (~107 J/m3). This thesis will focus on the fabrication of thin film NiTi by DC magnetron sputtering deposition and testing mechanical properties of the fabricated films by nanoindentation. Thin film NiTi SMA ...
Students’ Perspective On Safety Education Using Second Life As A Tool For Effective Learning, 2010 University of Texas at Tyler
Students’ Perspective On Safety Education Using Second Life As A Tool For Effective Learning, Dominick E. Fazarro, Nir Keren
Agricultural and Biosystems Engineering Conference Proceedings and Presentations
Educators are searching for cutting-edge ideas to deliver effective instructional methods to students and employers on different aspects of training. The population of students in colleges and universities are different in terms of dependency on technology. Most students are visual learners and are dependent on the use of technology in their everyday lives to satisfy social needs. Educators are seeking methods to increase student learning and comprehension of classroom theory by integrating the students’ need of technology. Teaching industrial safety can often leave the instructor with a level of uncertainty as to whether the students have grasped concepts taught in ...
Hrc Enews — 2010 Fall, 2010 University of Nevada, Las Vegas
Hrc Enews — 2010 Fall, Megan K. Svarz
This issue contains staff accomplishments and announcements, event listings, and a "new faces" listing for new staff, affiliates, and researchers.
Digital Content Preservation Across Domain Verticals, 2010 Royal College of Surgeons in Ireland
Digital Content Preservation Across Domain Verticals, Soha Maad, Borislav D. Dimitrov
General Practice Articles
The authors present a novel approach to develop scalable systems and services for preserving digital content generated from various application domains. The aim is to deliver an integrative scalable approach for digital content preservation across domain verticals. This would involve consolidating approaches for modeling document workflow, preserving the integrity of heterogeneous data, and developing robust and scalable tools for digital preservation ensuring interoperability across domains verticals. The authors consider various application domains including: healthcare, public, business and finance, media and performing art, and education. The authors focus on specific case studies of digital content preservation across the considered domain verticals ...
Sprawl Angle In Simplified Models Of Vertical Climbing: Implications For Robots And Roaches, 2010 University of Pennsylvania
Sprawl Angle In Simplified Models Of Vertical Climbing: Implications For Robots And Roaches, Goran A. Lynch, Lawrence Rome, Daniel E. Koditschek
Departmental Papers (ESE)
Empirical data taken from fast climbing sprawled posture animals reveals the presence of strong lateral forces with significant pendulous swaying of the mass center trajectory in a manner captured by a recently proposed dynamical template. In this simulation study we explore the potential benefits of pendulous dynamical climbing in animals and in robots by examining the stability and power advantages of variously more and less sprawled limb morphologies when driven by conventional motors in contrast with animal-like muscles. For open loop models of gait generation inspired by the neural-deprived regimes of high stride-frequency animal climbing, our results corroborate earlier hypotheses ...