Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Computer Sciences (1513)
- Environmental Sciences (1353)
- Physics (1038)
- Chemistry (951)
- Life Sciences (894)
-
- Engineering (866)
- Mathematics (789)
- Social and Behavioral Sciences (704)
- Earth Sciences (686)
- Statistics and Probability (427)
- Oceanography and Atmospheric Sciences and Meteorology (425)
- Education (306)
- Astrophysics and Astronomy (298)
- Applied Mathematics (285)
- Natural Resources and Conservation (282)
- Computer Engineering (275)
- Natural Resources Management and Policy (244)
- Electrical and Computer Engineering (221)
- Business (214)
- Databases and Information Systems (207)
- Arts and Humanities (202)
- Science and Mathematics Education (197)
- Sustainability (191)
- Environmental Health and Protection (180)
- Geology (168)
- Physical Chemistry (160)
- Water Resource Management (156)
- Law (154)
- Medicine and Health Sciences (152)
- Institution
-
- University of Nebraska - Lincoln (765)
- Selected Works (403)
- University of Wollongong (349)
- TÜBİTAK (214)
- Utah State University (208)
-
- Wright State University (201)
- Singapore Management University (198)
- University of Nevada, Las Vegas (194)
- SelectedWorks (185)
- Missouri University of Science and Technology (161)
- Louisiana State University (158)
- Old Dominion University (139)
- Technological University Dublin (124)
- Brigham Young University (115)
- Portland State University (115)
- Clemson University (102)
- Wayne State University (95)
- William & Mary (95)
- University of South Florida (94)
- Chinese Chemical Society | Xiamen University (87)
- University of Kentucky (87)
- Western Kentucky University (86)
- University of Massachusetts Amherst (85)
- Air Force Institute of Technology (81)
- California Polytechnic State University, San Luis Obispo (80)
- Embry-Riddle Aeronautical University (75)
- Virginia Commonwealth University (72)
- Dartmouth College (67)
- Syracuse University (67)
- COBRA (66)
- Keyword
-
- Climate change (43)
- Sustainability (38)
- Mathematics (34)
- Education (31)
- Research and Technical Reports (30)
-
- CMMB (29)
- Chemistry (29)
- Western Australia (29)
- GeoQUEST (28)
- West (28)
- 2009 (26)
- Management (25)
- Nanoparticles (25)
- Human–wildlife conflicts (24)
- Australia (23)
- Water (23)
- Water policy (23)
- Water quality (23)
- Western water law (23)
- College for Professional Studies (22)
- School of Computer & Information Science (22)
- Simulation (22)
- Water law (22)
- GIS (21)
- Security (21)
- Data (20)
- Galaxies: evolution (20)
- Groundwater (20)
- Algorithms (19)
- Colorado (19)
- Publication
-
- Research Collection School Of Computing and Information Systems (194)
- Theses and Dissertations (194)
- Faculty of Informatics - Papers (Archive) (158)
- Faculty of Science - Papers (Archive) (156)
- Faculty Publications (143)
-
- Computer Science & Engineering Syllabi (100)
- United States Department of Agriculture Wildlife Services: Staff Publications (95)
- Electronic Theses and Dissertations (94)
- Journal of Electrochemistry (87)
- Turkish Journal of Chemistry (82)
- Physics Faculty Publications (79)
- Nebraska Tractor Tests (75)
- LSU Doctoral Dissertations (67)
- Physics Faculty Research & Creative Works (66)
- Journal of Modern Applied Statistical Methods (64)
- Open Access Theses & Dissertations (63)
- Sci-Tech News (62)
- Dissertations (59)
- School of Natural Resources: Faculty Publications (54)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (54)
- All Dissertations (52)
- LSU Master's Theses (52)
- Doctoral Dissertations (50)
- Publications (49)
- Dartmouth Scholarship (47)
- Articles (45)
- Chemistry Faculty Publications (45)
- Master's Projects (45)
- Chemistry Faculty Research and Publications (43)
- The Mathematics Enthusiast (43)
- Publication Type
Articles 7591 - 7616 of 7616
Full-Text Articles in Physical Sciences and Mathematics
Should Biomarker Estimates Of Hiv Incidence Be Adjusted?, Ron Brookmeyer
Should Biomarker Estimates Of Hiv Incidence Be Adjusted?, Ron Brookmeyer
Ron Brookmeyer
Objective: To evaluate adjustment procedures that have been proposed to correct HIV incidence rates derived from cross-sectional surveys of biomarkers (BED). These procedures were motivated by some reports that the biomarker BED approach overestimates incidence when compared to cohort studies.
Design: Considered the Hargrove and McDougal adjustment procedures that adjust biomarker estimates of HIV incidence rates for misclassification with respect to the timing of infections.
Methods: Performed mathematical and statistical analysis of the adjustment formulas. Evaluated sources of error in cohort studies of incidence that could also explain discrepancies between cohort and biomarker estimates.
Results: The McDougal adjustment has no …
The Effects Of Herd Immunity On The Power Of Vaccine Trials, Blake Charvat, Ron Brookmeyer, Jay Herson
The Effects Of Herd Immunity On The Power Of Vaccine Trials, Blake Charvat, Ron Brookmeyer, Jay Herson
Ron Brookmeyer
We evaluate the effects of herd immunity on the power of vaccine trials. We consider large-scale trials in which persons are individually randomized to either placebo or vaccine. We evaluate the adequacy of naive power calculations that ignore the effects of herd immunity such as those based on the comparison of two independent binomials. We developed a simulation design to evaluate the quantitative effects of herd immunity on power. The simulation design accounted for nonhomogeneous mixing. We found that naive power calculations that ignore the effects of herd immunity can seriously overestimate power. In fact, we found that as sample …
Towards Self-Configurable Overlay Networks, Philadelphia University
Towards Self-Configurable Overlay Networks, Philadelphia University
Philadelphia University, Jordan
No abstract provided.
My Trig Book, Bruce Kessler
My Trig Book, Bruce Kessler
Bruce Kessler
This is the MATH 117 Trigonometry text developed by Dr. Bruce Kessler for the Gatton Academy of Math and Science at Western Kentucky University for the Academy sections of the course. The text has also been used in two online course offerings. Revised 7/19/11.
Free readers are available for all of the files that accompany the book. Mathematica Player is available at http://www.wolfram.com/products/player/. QuickTime Player is available at http://www.apple.com/quicktime/.
Diamond Theory Collections. A Collection Of Papers And Fragments Towards Diamond Theory 2007-2009, Rudolf Kaehr
Diamond Theory Collections. A Collection Of Papers And Fragments Towards Diamond Theory 2007-2009, Rudolf Kaehr
Rudolf Kaehr
No abstract provided.
Genome-Wide Scan Reveals Association Of Psoriasis With Il-23 And Nf-B Pathways, Rajan P. Nair, Kristina C. Duffin, Cynthia Helms, Jun Ding, Philip E. Stuart, David Goldgar, Johann E. Gudjonsson, Yun Li, Trilokraj Tejasvi, Bing-Jiag Feng, Andreas Ruether, Stefan Schreiber, Michael Weichenthal, Dafna Gladman, Proton Rahman, Steven J. Schrodi, Sampath Prahalad, Stephen L. Guthery, Judith Fischer, Wilson Liao, Pui-Yan Kwok, Alan Menter, G Mark Lathrop, Carol A. Wise, Ann B. Begovich, John J. Voorhees, James T. Elder, Gerald G. Krueger, Anne M. Bowcock, Goncalo R. Abecasis
Genome-Wide Scan Reveals Association Of Psoriasis With Il-23 And Nf-B Pathways, Rajan P. Nair, Kristina C. Duffin, Cynthia Helms, Jun Ding, Philip E. Stuart, David Goldgar, Johann E. Gudjonsson, Yun Li, Trilokraj Tejasvi, Bing-Jiag Feng, Andreas Ruether, Stefan Schreiber, Michael Weichenthal, Dafna Gladman, Proton Rahman, Steven J. Schrodi, Sampath Prahalad, Stephen L. Guthery, Judith Fischer, Wilson Liao, Pui-Yan Kwok, Alan Menter, G Mark Lathrop, Carol A. Wise, Ann B. Begovich, John J. Voorhees, James T. Elder, Gerald G. Krueger, Anne M. Bowcock, Goncalo R. Abecasis
Steven J Schrodi
Psoriasis is a common immune-mediated disorder that affects the skin, nails and joints. To identify psoriasis susceptibility loci, we genotyped 438,670 SNPs in 1,409 psoriasis cases and 1,436 controls of European ancestry. We followed up 21 promising SNPs in 5,048 psoriasis cases and 5,041 controls. Our results provide strong support for the association of at least seven genetic loci and psoriasis (each with combined P < 5 10-8). Loci with confirmed association include HLA-C, three genes involved in IL-23 signaling (IL23A, IL23R, IL12B), two genes that act downstream of TNF- and regulate NF-B signaling (TNIP1, TNFAIP3) and two genes involved in the modulation of Th2 immune responses (IL4, IL13). Although the proteins encoded in these loci are known to interact biologically, we found no evidence for epistasis between associated SNPs. Our results expand the catalog of genetic loci implicated in psoriasis susceptibility and suggest priority targets for study in other auto-immune disorders.
A Fine Mapping Theorem To Refine Results From Association Genetics Studies, Steven J. Schrodi
A Fine Mapping Theorem To Refine Results From Association Genetics Studies, Steven J. Schrodi
Steven J Schrodi
No abstract provided.
Homeland Security: Fostering Public-Private Partnerships, George H. Baker, Cheryl J. Elliott
Homeland Security: Fostering Public-Private Partnerships, George H. Baker, Cheryl J. Elliott
George H Baker
Recent U.S. high consequence events have clarified the importance of government collaboration with industry. The benefit of such collaboration was one of the most important lessons learned from Hurricane Katrina. The resources owned and controlled by American industry dwarf those available to local, state and even the federal government departments. Better agreements and incentives to bring the full capabilities of industry squarely into the national response agenda will be indispensable in effectively responding to large-scale catastrophes. At our 2007 Symposium, General Russel Honoré, who led the National Guard response to Katrina stated, “We need the partnering between local, state, and …
Modeling Forbidden Line Emission Profiles From Colliding Wind Binaries., R. Ignace, R. Bessey, C. S. Price
Modeling Forbidden Line Emission Profiles From Colliding Wind Binaries., R. Ignace, R. Bessey, C. S. Price
Richard Ignace
This paper presents calculations for forbidden emission-line profile shapes arising from colliding wind binaries. The main application is for systems involving a Wolf–Rayet (WR) star and an OB star companion. The WR wind is assumed to dominate the forbidden line emission. The colliding wind interaction is treated as an Archimedean spiral with an inner boundary. Under the assumptions of the model, the major findings are as follows. (i) The redistribution of the WR wind as a result of the wind collision is not flux conservative but typically produces an excess of line emission; however, this excess is modest at around …
Bayesian Statistics, Joseph F. Lucke
Synthesis, Characterization And Application Of Al,Fe-Pillared Clays, Zeljko D. Cupic
Synthesis, Characterization And Application Of Al,Fe-Pillared Clays, Zeljko D. Cupic
Zeljko D Cupic
No abstract provided.
The Privacy-Value-Control Harmonization For Rfid Adoption In Retail, Ben D. Renegar, K. Michael
The Privacy-Value-Control Harmonization For Rfid Adoption In Retail, Ben D. Renegar, K. Michael
Professor Katina Michael
Privacy concerns have, at least in part, impeded the adoption of radio frequency identification (RFID) in retail. The adoption of other automatic identification (auto-ID) applications shows that consumers often are willing to trade their privacy or their control of personal information against some value afforded by the application. In this paper, the interplay between privacy, value, and control is examined through a literature survey of four auto-ID applications: mobile phone, electronic toll collection, e-passports, and loyalty programs. The consumer value proposition for the use of RFID in retail is investigated through an online survey exploring end-user perceptions. The results of …
Improving Peer-To-Peer Search Performance Through Intelligent Social Search, Stephen J.H. Yang, Jia Zhang, L. Lin, Jeffrey J.P. Tsai
Improving Peer-To-Peer Search Performance Through Intelligent Social Search, Stephen J.H. Yang, Jia Zhang, L. Lin, Jeffrey J.P. Tsai
Jia Zhang
No abstract provided.
Overturning Instability In The Mesosphere And Lower Thermosphere: Analysis Of Instability Conditions In Lidar Data, Lucas Hurd, Miguel F. Larsen, Alan Z. Liu
Overturning Instability In The Mesosphere And Lower Thermosphere: Analysis Of Instability Conditions In Lidar Data, Lucas Hurd, Miguel F. Larsen, Alan Z. Liu
Alan Z Liu
No abstract provided.
Gravity Wave Propagation And Dissipation From The Stratosphere To The Lower Thermosphere, Xian Lu, Alan Z. Liu, Gary R. Swenson, Tao Li
Gravity Wave Propagation And Dissipation From The Stratosphere To The Lower Thermosphere, Xian Lu, Alan Z. Liu, Gary R. Swenson, Tao Li
Alan Z Liu
No abstract provided.
A Model Study Of The Effects Of Winds On Concentric Rings Of Gravity Waves From A Convective Plume Near Fort Collins On 11 May 2004, Sharon L. Vadas, Jia Yue, Chiao-Yao She, Peter A. Stamus, Alan Z. Liu
A Model Study Of The Effects Of Winds On Concentric Rings Of Gravity Waves From A Convective Plume Near Fort Collins On 11 May 2004, Sharon L. Vadas, Jia Yue, Chiao-Yao She, Peter A. Stamus, Alan Z. Liu
Alan Z Liu
No abstract provided.
Estimate Eddy Diffusion Coefficients From Gravity Wave Vertical Momentum And Heat Fluxes, Alan Z. Liu
Estimate Eddy Diffusion Coefficients From Gravity Wave Vertical Momentum And Heat Fluxes, Alan Z. Liu
Alan Z Liu
No abstract provided.
Sources Of Gravity Waves In The Lower Stratosphere Above South Pole, Zhenhua Li, Walter A. Robinson, Alan Z. Liu
Sources Of Gravity Waves In The Lower Stratosphere Above South Pole, Zhenhua Li, Walter A. Robinson, Alan Z. Liu
Alan Z Liu
No abstract provided.
Suitability Assessment Of Water Quality Of Shinta River And Its Impacts On The Users: A Case Study From Gondar, Ethiopia, Mohammad Mansoob Khan Dr, H. R. Sharma Dr
Suitability Assessment Of Water Quality Of Shinta River And Its Impacts On The Users: A Case Study From Gondar, Ethiopia, Mohammad Mansoob Khan Dr, H. R. Sharma Dr
Dr. Mohammad Mansoob Khan
No abstract provided.
Constraint Handling Using Tournament Selection: Abductive Inference In Partly Deterministic Bayesian Network, Severino F. Galan, Ole J. Mengshoel
Constraint Handling Using Tournament Selection: Abductive Inference In Partly Deterministic Bayesian Network, Severino F. Galan, Ole J. Mengshoel
Ole J Mengshoel
Constraints occur in many application areas of interest to evolutionary computation. The area considered here is Bayesian networks (BNs), which is a probability-based method for representing and reasoning with uncertain knowledge. This work deals with constraints in BNs and investigates how tournament selection can be adapted to better process such constraints in the context of abductive inference. Abductive inference in BNs consists of finding the most probable explanation given some evidence. Since exact abductive inference is NP-hard, several approximate approaches to this inference task have been developed. One of them applies evolutionary techniques in order to find optimal or close-to-optimal …
Methods For Probabilistic Fault Diagnosis: An Electrical Power System Case Study, Brian Ricks, Ole J. Mengshoel
Methods For Probabilistic Fault Diagnosis: An Electrical Power System Case Study, Brian Ricks, Ole J. Mengshoel
Ole J Mengshoel
Health management systems that more accurately and quickly diagnose faults that may occur in different technical systems on-board a vehicle will play a key role in the success of future NASA missions. We discuss in this paper the diagnosis of abrupt continuous (or parametric) faults within the context of probabilistic graphical models, more specifically Bayesian networks that are compiled to arithmetic circuits. This paper extends our previous research, within the same probabilistic setting, on diagnosis of abrupt discrete faults. Our approach and diagnostic algorithm ProDiagnose are domain-independent; however we use an electrical power system testbed called ADAPT as a case …
Multilayered Structures In The Ionosphere F2 Region And Impulse-Like Increase Of The Nightglow Red 630 Nm Line Intensity As A Result Of Influence Of Shear Excited Atmospheric Vortical Perturbations, G. G. Didebulidze, Levan Lomidze, N. B. Gudadze, M. Todua
Multilayered Structures In The Ionosphere F2 Region And Impulse-Like Increase Of The Nightglow Red 630 Nm Line Intensity As A Result Of Influence Of Shear Excited Atmospheric Vortical Perturbations, G. G. Didebulidze, Levan Lomidze, N. B. Gudadze, M. Todua
Levan Lomidze
It is shown that the formation of multilayered structures in the midlatitude ionosphere F 2 layer can be caused by atmospheric vortical perturbation (shear wave) evolving in the meridional wind with linear zonal shear and can be accompanied by an impulse-like increase (with duration about 1–3 h) in the red 630 nm line total nightglow intensity. The shear wave can produce an enhancement of the northward wind (or decrease in the southward one), which can cause a downward motion of the F 2 layer peak height resulting in the impulse-like increase in the red line intensity. An important increase in …
Polylingual Topic Models, David Mimno, Hanna M. Wallach, Jason Naradowsky, David A. Smith, Andrew Mccallum
Polylingual Topic Models, David Mimno, Hanna M. Wallach, Jason Naradowsky, David A. Smith, Andrew Mccallum
Hanna M. Wallach
Topic models are a useful tool for analyzing large text collections, but have previously been applied in only monolingual, or at most bilingual, contexts. Meanwhile, massive collections of interlinked documents in dozens of languages, such as Wikipedia, are now widely available, calling for tools that can characterize content in many languages. We introduce a polylingual topic model that discovers topics aligned across multiple languages. We explore the model's characteristics using two large corpora, each with over ten different languages, and demonstrate its usefulness in supporting machine translation and tracking topic trends across languages.
Characterization Of Unknown Genetic Modifications Using High Throughput Sequencing And Computational Subtraction, Torstein Tengs
Characterization Of Unknown Genetic Modifications Using High Throughput Sequencing And Computational Subtraction, Torstein Tengs
Dr. Torstein Tengs
Background
When generating a genetically modified organism (GMO), the primary goal is to give a target organism one or several novel traits by using biotechnology techniques. A GMO will differ from its parental strain in that its pool of transcripts will be altered. Currently, there are no methods that are reliably able to determine if an organism has been genetically altered if the nature of the modification is unknown.
Results
We show that the concept of computational subtraction can be used to identify transgenic cDNA sequences from genetically modified plants. Our datasets include 454-type sequences from a transgenic line of …
Landscape: Representing And Interpreting The World, Karen M. Morin
Landscape: Representing And Interpreting The World, Karen M. Morin
Karen M. Morin
No abstract provided.
Are (The Log-Odds Of) Hospital Mortality Rates Normally Distributed In Ontario? Implications For Studying Variations In Outcomes Of Medical Care, Peter C. Austin
Are (The Log-Odds Of) Hospital Mortality Rates Normally Distributed In Ontario? Implications For Studying Variations In Outcomes Of Medical Care, Peter C. Austin
Peter Austin
Objective: Hierarchical regression models are used to examine variations in outcomes following the provision of medical care across providers. These models frequently assume a normal distribution for the provider-specific random effects. Poincaré said, “Everyone believes in the normal law, the experimenters because they imagine it a mathematical theorem, and the mathematicians because they think it an experimental fact”. Our objective was to examine the appropriateness of this assumption when examining variations in mortality.
Study design and setting: We used Bayesian model selection methods to compare hierarchical regression models in which the provider-specific random effects were either a normal distribution or …