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Articles 5551 - 5580 of 8614
Full-Text Articles in Entire DC Network
Family Of Compaction Curves For Chemically Modified Soils, Radha Krishna Daita, Vincent P. Drnevich, Daehyeon Kim
Family Of Compaction Curves For Chemically Modified Soils, Radha Krishna Daita, Vincent P. Drnevich, Daehyeon Kim
JTRP Technical Reports
Lime and Lime Kiln Dust (LKD) are widely used for modifying/stabilizing pavement subgrades. The addition of lime or LKD involves chemical processes that are dependent on many parameters. For natural subgrades, quality control is based on moisture and unit weight requirements using manual interpolations of one-point test data on a family of curves. For modified soils, moisture and unit weight measurements are insufficient for quality control and other tests must be considered. Various possible quality control methods for LKD-modified subgrades were evaluated. This research produced an Excel-based program to automate the generation of a family of curves and one-point data …
An Evaluation Of The Cost-Effectiveness Of Warranty Contracts In Indiana, Priyanka Singh, Samuel Labi, Bob Mccullouch, Kumares C. Sinha
An Evaluation Of The Cost-Effectiveness Of Warranty Contracts In Indiana, Priyanka Singh, Samuel Labi, Bob Mccullouch, Kumares C. Sinha
JTRP Technical Reports
In a bid to ensure cost-effective highway construction practices, highway agencies constantly seek ways to accelerate project design and delivery through implementation of innovative contracting and procurement practices. The concept of warranties, which is one of such promising practices, involves a shift of the burden of construction quality control, product performance and product maintenance from the owner to the contractor. As such, warranty projects are expected to enhance product quality and service life, and ultimately, reduced life-cycle cost. The expected benefits of warranty projects, however, could be offset by their historically higher construction costs. It is therefore necessary to evaluate …
Its Strategies For Minimization Of Fine Particulates, Ahmed S. Soliman, Robert Bertram Jacko, Barry K. Partridge
Its Strategies For Minimization Of Fine Particulates, Ahmed S. Soliman, Robert Bertram Jacko, Barry K. Partridge
JTRP Technical Reports
The purpose of the study was to quantify the impact of traffic conditions such as free flow and congestion on local air quality. The Borman Expressway in Northwest Indiana is considered a test-bed for this research due to the high volume of class-9-truck traffic traveling on it, as well as the existing and continuing installation of the Intelligent Transportation System (ITS) to improve the traffic management along the highway stretch. An empirical Traffic-Air-Quality model (TAQ model) was developed to estimate the PM2.5 emission factors (g/mi) based solely on the measured traffic parameters such as average speed, average acceleration and truck …
Timing And Nature Of The Deepening Of The Tasmanian Gateway, Catherine E. Stickley, Henk Brinkhuis, Stephen A. Schellenberg, Appy Sluijs, Ursula Röhl, Michael Fuller, Marianne Grauert, Matthew Huber, Jeroen Warnaar, Graham L. Williams
Timing And Nature Of The Deepening Of The Tasmanian Gateway, Catherine E. Stickley, Henk Brinkhuis, Stephen A. Schellenberg, Appy Sluijs, Ursula Röhl, Michael Fuller, Marianne Grauert, Matthew Huber, Jeroen Warnaar, Graham L. Williams
Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications
Tectonic changes that produced a deep Tasmanian Gateway between Australia and Antarctica are widely invoked as the major mechanism for Antarctic cryosphere growth and Antarctic Circumpolar Current (ACC) development during the Eocene/Oligocene (E/O) transition (∼34–33 Ma). Ocean Drilling Program (ODP) Leg 189 recovered near-continuous marine sedimentary records across the E/O transition interval at four sites around Tasmania. These records are largely barren of calcareous microfossils but contain a rich record of siliceous- and organic-walled marine microfossils. In this study we integrate micropaleontological, sedimentological, geochemical, and paleomagnetic data from Site 1172 (East Tasman Plateau) to identify four distinct phases (A–D) in …
Eocene Circulation Of The Southern Ocean: Was Antarctica Kept Warm By Subtropical Waters?, Matthew Huber, Henk Brinkhuis, Catherine E. Stickley, Kristofer Döös, Appy Sluijs
Eocene Circulation Of The Southern Ocean: Was Antarctica Kept Warm By Subtropical Waters?, Matthew Huber, Henk Brinkhuis, Catherine E. Stickley, Kristofer Döös, Appy Sluijs
Department of Earth, Atmospheric, and Planetary Sciences Faculty Publications
Near the Eocene's close (∼34 million years ago), the climate system underwent one of the largest shifts in Earth's history: Antarctic terrestrial ice sheets suddenly grew and ocean productivity patterns changed. Previous studies conjectured that poleward penetration of warm, subtropical currents, the East Australian Current (EAC) in particular, caused Eocene Antarctic warmth. Late Eocene opening of an ocean gateway between Australia and Antarctica was conjectured to have disrupted the EAC, cooled Antarctica, and allowed ice sheets to develop. Here we reconstruct Eocene paleoceanographic circulation in the Tasmanian region, using (1) biogeographical distributions of phytoplankton, including data from recently drilled Ocean …
International Cross Section Estimates Of Demand For Use In The Gtap Model, Jeffrey J. Reimer, Thomas W. Hertel
International Cross Section Estimates Of Demand For Use In The Gtap Model, Jeffrey J. Reimer, Thomas W. Hertel
GTAP Technical Papers Archive
The making of projections often requires an economy-wide perspective, and the estimation of consumer demands at the international level. In this paper, an implicit, directly additive demand system (AIDADS) is estimated using cross-country data on consumer expenditures from the International Comparison Program (ICP), and then from Global Trade Analysis Project (GTAP) data. The two data sets are found to produce results that are quite consistent despite their differing origins, and the fact that the former is based on consumer goods that embody wholesale/retail margins, while margin demands are treated separately in GTAP. Given the similarity of the results, the estimation …
Fast Search For Best Representations In Multitree Dictionaries, Yan Huang, Ilya Pollak, Minh N. Do, Charles A. Bouman
Fast Search For Best Representations In Multitree Dictionaries, Yan Huang, Ilya Pollak, Minh N. Do, Charles A. Bouman
Department of Electrical and Computer Engineering Technical Reports
We develop a new framework of multitree dictionaries which includes some previously proposed dictionaries as special cases. We show how to efficiently find the best object in a multitree dictionary using a recursive tree pruning algorithm. We illustrate our framework through several examples, including a novel block image coder which significantly outperforms both the standard JPEG and quadtree-based methods, and is comparable to embedded coders such as JPEG2000 and SPIHT.
A Credit-Based Distributed Protocol For Long-Term Fairness In Ieee 802.11 Single-Hop Networks, Yan Wu, Sonia Fahmy
A Credit-Based Distributed Protocol For Long-Term Fairness In Ieee 802.11 Single-Hop Networks, Yan Wu, Sonia Fahmy
Department of Computer Science Technical Reports
No abstract provided.
New Computational Intelligence Algorithms And Their Applications, Hoi-Ming Chi, Okan K. Ersoy
New Computational Intelligence Algorithms And Their Applications, Hoi-Ming Chi, Okan K. Ersoy
Department of Electrical and Computer Engineering Technical Reports
Several new computational intelligence algorithms and their applications are investigated in this thesis. First, a linear support vector machine decision tree (LSVMDT) is developed by building a binary tree with a linear support vector machine in each tree node. It has built-in rare event detection mechanism, and allows efficient rule extraction. Secondly, an efficient recursive update algorithm when new data becomes available is derived for least squares support vector machines. This is very essential in online learning. Thirdly, a three-layered learning system is proposed. It consists of a random mapping stage and a learning stage with ordinary least squares, error-correcting …
Robust And Distributed Computation Of Aggregates In Wireless Sensor Networks, Jen-Yeu Chen, Gopal Pandurangan, Dongyan Xu
Robust And Distributed Computation Of Aggregates In Wireless Sensor Networks, Jen-Yeu Chen, Gopal Pandurangan, Dongyan Xu
Department of Computer Science Technical Reports
No abstract provided.
Unstructured Peer-To-Peer Networks For Sharing Processor Cycles, Asad Awan, Ronaldo A. Ferreira, Suresh Jagannathan, Ananth Y. Grama
Unstructured Peer-To-Peer Networks For Sharing Processor Cycles, Asad Awan, Ronaldo A. Ferreira, Suresh Jagannathan, Ananth Y. Grama
Department of Computer Science Technical Reports
No abstract provided.
Bicistronic And Fused Monocistronic Transcripts Are Derived From Adjacent Loci In The Arabidopsis Genome, Jyothi Thimmapuram, Hui Duan, Lei Liu, Mary A. Schuler
Bicistronic And Fused Monocistronic Transcripts Are Derived From Adjacent Loci In The Arabidopsis Genome, Jyothi Thimmapuram, Hui Duan, Lei Liu, Mary A. Schuler
Cyber Center Publications
Comparisons of full-length cDNAs and genomic DNAs available for Arabidopsis thaliana described here indicate that some adjacent loci are transcribed into extremely long RNAs spanning two annotated genes. Once expressed, some of these transcripts are post-transcriptionally spliced within their coding and intergenic sequences to generate bicistronic transcripts containing two complete open reading frames. Others are spliced to generate monocistronic transcripts coding for fusion proteins with sequences derived from both loci. RT-PCR of several P450 transcripts in this collection indicates that these extended transcripts exist side by side with shorter monocistronic transcripts derived from the individual loci in each pair. The …
Query Processing Using Negative Tuples In Stream Query Engines, T. Ghanem, M. Hammad, M. Mokbel, Walid G. Aref, Ahmed K. Elmagarmid
Query Processing Using Negative Tuples In Stream Query Engines, T. Ghanem, M. Hammad, M. Mokbel, Walid G. Aref, Ahmed K. Elmagarmid
Department of Computer Science Technical Reports
No abstract provided.
Energy-Efficient Routing And Data Aggregation In Sensor Networks: An Experimental Study, Ossama Younis, Sonia Fahmy
Energy-Efficient Routing And Data Aggregation In Sensor Networks: An Experimental Study, Ossama Younis, Sonia Fahmy
Department of Computer Science Technical Reports
No abstract provided.
Valley Splitting In Low-Density Quantum-Confined Heterostructures Studied Using Tight-Binding Models, Timothy B. Boykin, Gerhard Klimeck, Mark Friesen, S. N. Coppersmith, Paul Von Allmen, Seungwon Lee, Fabiano Oyafuso
Valley Splitting In Low-Density Quantum-Confined Heterostructures Studied Using Tight-Binding Models, Timothy B. Boykin, Gerhard Klimeck, Mark Friesen, S. N. Coppersmith, Paul Von Allmen, Seungwon Lee, Fabiano Oyafuso
Other Nanotechnology Publications
A detailed study of reduced-basis tight-binding models of electrons in semiconducting quantum wells is presented. The focus is on systems with degenerate valleys, such as silicon in silicon germanium heterostructures, in the low-density limit, relevant to proposed quantum computing architectures. Analytic results for the bound states of systems with hard-wall boundaries are presented and used to characterize the valley splitting in silicon quantum wells. The analytic solution in a no-spin-orbit model agrees well with larger tight-binding calculations that do include spin-orbit coupling. Numerical investigations of the valley splitting for finite band offsets are presented that indicate that the hard-wall results …
Valley Splitting In Low-Density Quantum-Confined Heterostructures Studied Using Tight-Binding Models, Timothy B. Boykin, Gerhard Klimeck, Mark Friesen, S N. Coopersmith, Paul Von Allmen, Fabiano Oyafuso, Seungwon Lee
Valley Splitting In Low-Density Quantum-Confined Heterostructures Studied Using Tight-Binding Models, Timothy B. Boykin, Gerhard Klimeck, Mark Friesen, S N. Coopersmith, Paul Von Allmen, Fabiano Oyafuso, Seungwon Lee
Birck and NCN Publications
A detailed study of reduced-basis tight-binding models of electrons in semiconducting quantum wells is presented. The focus is on systems with degenerate valleys, such as silicon in silicon germanium heterostructures, in the low-density limit, relevant to proposed quantum computing architectures. Analytic results for the bound states of systems with hard-wall boundaries are presented and used to characterize the valley splitting in silicon quantum wells. The analytic solution in a no-spin-orbit model agrees well with larger tight-binding calculations that do include spin-orbit coupling. Numerical investigations of the valley splitting for finite band offsets are presented that indicate that the hard-wall results …
Perceptions Of Practitioners And Engineering Educators And Students Regarding Requisite Skills For Effective Design Of Complex Systems, Melanie A. Thom
Perceptions Of Practitioners And Engineering Educators And Students Regarding Requisite Skills For Effective Design Of Complex Systems, Melanie A. Thom
Open Access Theses
Both popular press and academic journals have reported increasing trends in design failures attributed to engineering errors, poor planning and inadequate design decisions as demonstrated by mission failures, product failures and increasing manufacturing and support costs ((McMasters & Matsch, 1996; Oberg, 2000; Lowery, 1998; Hayes & Wheelwright, 1984; Schlager, 1994; Scott, 1999, 1999a, 1999b). The authors of the articles agree that graduating engineers are competent at formulaic analysis, but they suggest a perceived lack of fundamental skills necessary for design activities. This lack of skills is described in broad terms but the descriptions lack specific metrics for assessing the possession …
Interactive Volume Illustration Using Wang Cubes, Aidong Lu, David S. Ebert, Wei Qiao, Martin Kraus, Benjamin Mora
Interactive Volume Illustration Using Wang Cubes, Aidong Lu, David S. Ebert, Wei Qiao, Martin Kraus, Benjamin Mora
Department of Electrical and Computer Engineering Technical Reports
To create a new, exible system for volume illustration, we have explored the use of Wang Cubes, the 3D extension of 2D Wang Tiles. We use small sets of Wang Cubes to generate a large variety of non-periodic illustrative 3D patterns and textures, and we develop a direct volume rendering framework with these cubes. With the generated patterns and textures, our framework can be used to render volume datasets effectively and a variety of rendering styles can be achieved with less storage. Specifically, we extend the non-periodic tiling process of Wang Tiles to Wang Cubes and modify it for multi-purpose …
Randomized Leader Election, Murali Krishna Ramanathan, Ronaldo A. Ferreira, Suresh Jagannathan, Ananth Y. Grama
Randomized Leader Election, Murali Krishna Ramanathan, Ronaldo A. Ferreira, Suresh Jagannathan, Ananth Y. Grama
Department of Computer Science Technical Reports
No abstract provided.
Distributed Uniform Sampling In Real- World Networks, Asad Awan, Ronaldo A. Ferreira, Suresh Jagannathan, Ananth Y. Grama
Distributed Uniform Sampling In Real- World Networks, Asad Awan, Ronaldo A. Ferreira, Suresh Jagannathan, Ananth Y. Grama
Department of Computer Science Technical Reports
No abstract provided.
Ao2p: Ad-Hoc On-Demand Position-Based Private Routing Protocol, Xiaoxin Wu, Bharat Bhargava
Ao2p: Ad-Hoc On-Demand Position-Based Private Routing Protocol, Xiaoxin Wu, Bharat Bhargava
Department of Computer Science Technical Reports
No abstract provided.
Improving Throughput By Link Distance Control In A Multi-Rate Ad Hoc Network, Xiaoxin Wu, Gang Ding, Bharat Bhargava, Shan Lei
Improving Throughput By Link Distance Control In A Multi-Rate Ad Hoc Network, Xiaoxin Wu, Gang Ding, Bharat Bhargava, Shan Lei
Department of Computer Science Technical Reports
No abstract provided.
Incremental Evaluation Of Sliding- Window Queries Over Data Streams, T. M. Ghanem, M. Hammad, M. Mokbel, Walid G. Aref, Ahmed K. Elmagarmid
Incremental Evaluation Of Sliding- Window Queries Over Data Streams, T. M. Ghanem, M. Hammad, M. Mokbel, Walid G. Aref, Ahmed K. Elmagarmid
Department of Computer Science Technical Reports
No abstract provided.
Efficient Randomized Search Algorithms In Unstructured Peer-To-Peer Networks, Ronaldo A. Ferreira, Murali Krisna Ramanathan, Ananth Y. Grama, Suresh Jagannathan
Efficient Randomized Search Algorithms In Unstructured Peer-To-Peer Networks, Ronaldo A. Ferreira, Murali Krisna Ramanathan, Ananth Y. Grama, Suresh Jagannathan
Department of Computer Science Technical Reports
No abstract provided.
Janus: Towards Robust And Malicious Resilient Routing In Hybrid Wireless Networks, Bogdan Carbunar, Ioanis Ioannidis, Cristina Nita-Rotaru
Janus: Towards Robust And Malicious Resilient Routing In Hybrid Wireless Networks, Bogdan Carbunar, Ioanis Ioannidis, Cristina Nita-Rotaru
Department of Computer Science Technical Reports
No abstract provided.
Quality-Aware Replication Of Multimedia Data, Yi-Cheng Tu, Sunil Prabhakar
Quality-Aware Replication Of Multimedia Data, Yi-Cheng Tu, Sunil Prabhakar
Department of Computer Science Technical Reports
No abstract provided.
Brain Motion And Deformation During Closed Head Injury In The Presence Of Cerebrospinal Fluid, Charles F. Babbs
Brain Motion And Deformation During Closed Head Injury In The Presence Of Cerebrospinal Fluid, Charles F. Babbs
Weldon School of Biomedical Engineering Faculty Publications
This paper presents a new analysis of the physics of closed head injury following brief, intense acceleration of the head. It focuses upon the buoyancy of the brain in cerebrospinal fluid, which protects against damage, the propagation of strain waves through the brain substance, which causes damage, and the concentration of strain in critical anatomic regions, which magnifies damage. Numerical methods are used to create animations or "movies" of brain motion and deformation. Initially a 1 cm gap filled with cerebrospinal fluid (CSF) separates the brain from the skull. Whole head acceleration induces artificial gravity within the skull. The brain …
Management Based On Reliable Comparative Data. Library Statistics And Performance Indicators. A Common Project Of Polish Research Libraries, Lidia Derfert-Wolf, Marek M. Górski, Marzena Marcinek
Management Based On Reliable Comparative Data. Library Statistics And Performance Indicators. A Common Project Of Polish Research Libraries, Lidia Derfert-Wolf, Marek M. Górski, Marzena Marcinek
Proceedings of the IATUL Conferences
The paper reports the results of the on-going research on performance indicators and library statistics for Polish research libraries. It is a continuation of activity realised in the frame of the EU Tempus Project "Development of Library Management as a Part of the University Total Quality Management". The Task Group for Standardisation presently conducts it in the frame of the national project financed from the funds of the Ministry of National Education and Sport. The first part of the paper presents the results of the EU Tempus Project. The second part describes the tools for library performance evaluation applied in …
Tib - An Organisation With A Cost-Effective, Strategy-Oriented Approach, Petra Düren
Tib - An Organisation With A Cost-Effective, Strategy-Oriented Approach, Petra Düren
Proceedings of the IATUL Conferences
No abstract provided.
Management And Re-Organization Of An Academic Library In Continuously Changing Environment, Bulent Karasozen, Ebru Gurbuz
Management And Re-Organization Of An Academic Library In Continuously Changing Environment, Bulent Karasozen, Ebru Gurbuz
Proceedings of the IATUL Conferences
No abstract provided.