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Articles 5221 - 5250 of 8621
Full-Text Articles in Physical Sciences and Mathematics
Impacts Of Shoreline Development On The Littoral Zone Of Great Pond, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Impacts Of Shoreline Development On The Littoral Zone Of Great Pond, Problems In Environmental Science Course (Biology 493), Colby College, Colby Environmental Assessment Team, Colby College
Colby College Watershed Study: Great Pond (2012, 2010, 1998)
The Colby Environmental Assessment Team (CEAT) investigated the littoral zone of Great Pond in the Belgrade Lakes region of central Maine. Data collection occurred in September and October and analysis followed in October and November of 2010. Physical, biological, and chemical parameters were assessed to examine the impacts of shoreline development on the health of the littoral community. The littoral zone and adjacent riparian areas were sampled to allow comparison of aquatic and terrestrial parameters among different levels of shoreline development.
Enrique Reef: Degradation And Protective Measures, Dana Mitchell
Enrique Reef: Degradation And Protective Measures, Dana Mitchell
Student Theses 2001-2013
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Creating Knowledge, Volume 3, 2010
Creating Knowledge, Volume 3, 2010
Creating Knowledge
CREATING KNOWLEDGE 5 Dear Students, Faculty Colleagues, and Friends,
The College of Liberal Arts and Sciences, through the deliberations and efforts of its Task Force on “Creating Knowledge,” chaired by Professor Ralph Erber, Associate Dean for Research in the College of Liberal Arts and Sciences, committed itself to a number of new strategic initiatives that would enhance and enrich the academic quality of the student experience within the college. Chief among these initiatives was one that would encourage students to become actively engaged in creating scholarship and research and give them a venue for the publication of their essays. The …
Thiol-Ene Chemistry For The Synthesis And Modification Of Branched Organosilicon Polymers, David Son, Christiana Rissing, Li Chen, Theodore Andersson
Thiol-Ene Chemistry For The Synthesis And Modification Of Branched Organosilicon Polymers, David Son, Christiana Rissing, Li Chen, Theodore Andersson
Chemistry Research
No abstract provided.
Interplay Between The Lattice And Spin Degrees Of Freedom In (Sr1−Xcax)3ru2o7, Jin Peng, David Fobes, Tijian Liu, Xiaoshan Wu, H M. Pham, Leonard Spinu, Z Q. Mao
Interplay Between The Lattice And Spin Degrees Of Freedom In (Sr1−Xcax)3ru2o7, Jin Peng, David Fobes, Tijian Liu, Xiaoshan Wu, H M. Pham, Leonard Spinu, Z Q. Mao
Physics Faculty Publications
The Sr1−xCax3Ru2O7 solid solution series exhibits complex magnetic ground states, ranging from an itinerant metamagnetic state, to a quasi-two-dimensional 2D heavy-mass nearly ferromagneticFM state, and finally to a long-range antiferromagnetically ordered state Z. Qu et al. Phys. Rev. B. 78, R180407 2008. In this paper, we investigate the evolution of structural distortion and magnetic anisotropy with Ca content in this material system. Our results show that both the magnetic phase transitions and magnetic anistropy of this system couple with the evolution of structure distortion. The transformation from the itinerant metamagnetic to the nearly ferromagnetic state is accompanied …
Fabrication And Magnetic Properties Of Fe Nanostructures In Anodic Alumina Membrane, J H. Lim, W S. Chae, H O. Lee, L Malkinski, S G. Min, J B. Wiley, J H. Jun, S H. Lee, J S. Jung
Fabrication And Magnetic Properties Of Fe Nanostructures In Anodic Alumina Membrane, J H. Lim, W S. Chae, H O. Lee, L Malkinski, S G. Min, J B. Wiley, J H. Jun, S H. Lee, J S. Jung
Physics Faculty Publications
Several Fe nanostructures with different lengths, diameters, and separations of the constituting magnetic components have been synthesized using anodized alumina membranes (AAMs) to understand the influence of these parameters on their magnetic properties. Fe nanostructures with high crystallinity and (110) orientation were synthesized by electrodeposition at room temperature in regular AAMs and mild-hard AAM (Mi-Ha AAM). Fe nanostructures with different aspect ratios (1:1, 1:10, and 1:75) in the form of nanodots, nanorods, or nanowires were synthesized in regular AAMs with the 100 nm interpore distance. Mi-Ha AAMs with two different pore sizes (70 and 120 nm) and 250 nm interpore …
Collinear Phase Matching For Second Harmonic Generation Using Conoscopic Interferometry, A Puri, A De
Collinear Phase Matching For Second Harmonic Generation Using Conoscopic Interferometry, A Puri, A De
Physics Faculty Publications
The problem of finding phase-matching directions in noncentrosymmetric biaxial crystals is simplified here by the use of Conoscopic interferometry. Based on vector relations for wave propagation in birefringent media and solutions to phase-matching equations, we show that phase matching directions can be located on the conoscopic interferograms and that fringe numbers for dark-isochromes can be used as a guide to find phase-matching directions for a biaxial crystal. This technique can be generalized and extended to any anisotropic crystal. We have demonstrated this method for the particular case of a biaxial KTiOPO4 crystal, where it is found to be particularly …
2010 Hampton Roads Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans
2010 Hampton Roads Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans
Miscellaneous
These calendars are produced monthly using David Evans' Tidecal.
2010 Gloucester Point Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans
2010 Gloucester Point Station Tide Prediction Calendars, Virginia Institute Of Marine Science, David A. Evans
Miscellaneous
These calendars are produced monthly using David Evans' Tidecal.
Search For A Resonance Decaying Into Wz Boson Pairs In Pp Collisions, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration
Search For A Resonance Decaying Into Wz Boson Pairs In Pp Collisions, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration
Kenneth Bloom Publications
We present the first search for an electrically charged resonance W’ decaying to a WZ boson pair using 4.1 fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron pp collider. The WZ pairs are reconstructed through their decays into three charged leptons (ℓ = e, μ). A total of 9 data events is observed in good agreement with the background prediction. We set 95% C.L. limits on the W’WZ coupling and on the W’ production cross section multiplied by the branching fractions. We also exclude W’ masses between 188 and 520 …
Search For The Associated Production Of A B Quark And A Neutral Supersymmetric Higgs Boson That Decays Into Τ Pairs, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration
Search For The Associated Production Of A B Quark And A Neutral Supersymmetric Higgs Boson That Decays Into Τ Pairs, V. M. Abazov, Kenneth A. Bloom, Gregory Snow, D0 Collaboration
Kenneth Bloom Publications
We report results from a search for production of a neutral Higgs boson in association with a b quark. We search for Higgs decays to τ pairs with one τ subsequently decaying to a muon and the other to hadrons. The data correspond to 2.7 fb-1 of pp collisions recorded by the D0 detector at √s = 1.96 TeV. The data are found to be consistent with background predictions. The result allows us to exclude a significant region of parameter space of the minimal supersymmetric model.
A Virtual Visit To A Sustainable 2050, Robert Costanza
A Virtual Visit To A Sustainable 2050, Robert Costanza
Institute for Sustainable Solutions Publications and Presentations
The article describes the situation in a virtual, sustainable world in 2050. Observations include stable global human population at 8 billion people, slightly decreasing material throughput of local and global economies with an average quality of life (QOL) index at 2% per year. It also notes the lower income gaps within and between countries, the return of global biodiversity and the problem with regards to the effects of climate change. It also adds the use of internal labor equivalent trading system (LETS).
Climate Change And Freshwater Resources In Oregon, Heejun Chang, Julie Jones
Climate Change And Freshwater Resources In Oregon, Heejun Chang, Julie Jones
Institute for Sustainable Solutions Publications and Presentations
Climate change will affect various sectors of water resources in Oregon in the 21st century. The observed trends in streamflow show significant declines in September flow and, although not significant, increases in March flow in many transient rain-snow basins. These streamflow trends are associated with rising temperature and coincident declines in snowpack in spring in the latter half of the 20th century. While there are no distinct trends in high precipitation events, such events are associated with climate variability such as ENSO and PDO. Effects of ENSO and PDO are more pronounced at the beginning and end of the wet …
Tr-2010002: Reasoning About Games, Melvin Fitting
Tr-2010002: Reasoning About Games, Melvin Fitting
Computer Science Technical Reports
No abstract provided.
Tr-2010003: The Impossibility Of Definitive Solutions For Some Games, Sergei Artemov
Tr-2010003: The Impossibility Of Definitive Solutions For Some Games, Sergei Artemov
Computer Science Technical Reports
No abstract provided.
Tr-2010004: Tracking Evidence, Sergei Artemov
Tr-2010004: Tracking Evidence, Sergei Artemov
Computer Science Technical Reports
No abstract provided.
Tr-2010006: Graph-Based Clustering And Its Application In Coreference Resolution, Zheng Chen
Tr-2010006: Graph-Based Clustering And Its Application In Coreference Resolution, Zheng Chen
Computer Science Technical Reports
No abstract provided.
Tr-2010007: Robust Knowledge Of Rationality, Sergei Artemov
Tr-2010007: Robust Knowledge Of Rationality, Sergei Artemov
Computer Science Technical Reports
No abstract provided.
Tr-2010010: Robust Knowledge And Rationality, Sergei Artemov
Tr-2010010: Robust Knowledge And Rationality, Sergei Artemov
Computer Science Technical Reports
No abstract provided.
Tr-2010011: Randomized Preprocessing Versus Pivoting Ii, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng
Tr-2010011: Randomized Preprocessing Versus Pivoting Ii, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng
Computer Science Technical Reports
No abstract provided.
Tr-2010012: Randomized Preconditioning Of Linear Systems Of Equations, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng
Tr-2010012: Randomized Preconditioning Of Linear Systems Of Equations, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng
Computer Science Technical Reports
No abstract provided.
Tr-2010013: Matrix Computations And Polynomial Root-Finding With Preprocessing, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng, Zhao Chen
Tr-2010013: Matrix Computations And Polynomial Root-Finding With Preprocessing, Victor Y. Pan, Guoliang Qian, Ai-Long Zheng, Zhao Chen
Computer Science Technical Reports
No abstract provided.
Inelastic Collisions In Cold Dipolar Gases, Catherine A. Newell
Inelastic Collisions In Cold Dipolar Gases, Catherine A. Newell
University of Kentucky Doctoral Dissertations
Inelastic collisions between dipolar molecules, assumed to be trapped in a static electric field at cold (> 10−3K) temperatures, are investigated and compared with elastic collisions. For molecules with a Λ-doublet energy-level structure, a dipole moment arises because of the existence of two nearly degenerate states of opposite parity, and the collision of two such dipoles can be solved entirely analytically in the energy range of interest. Cross sections and rate constants are found to satisfy simple, universal formulas. In contrast, for molecules in a Σ electronic ground state, the static electric field induces a dipole moment in …
Streamflow Prediction Using Gis For The Kentucky River Basin, Bakkiyalakshmi Palanisamy
Streamflow Prediction Using Gis For The Kentucky River Basin, Bakkiyalakshmi Palanisamy
University of Kentucky Doctoral Dissertations
The study was aimed at developing a simple methodology for flow prediction in ungauged basins using existing data resources. For this purpose, the streamflow measurements across the Kentucky River Basin located in Kentucky, USA were obtained from United States Geological Survey (USGS) archive. The flow transferring characteristics of the subbasins of the Kentucky River Basin were obtained by combining downstream and upstream stream gauges. The flow transferring function thus derived were related to watershed, channel and flow characteristics of the subbasins by multiple regression analysis. The gauge pairs were divided into two classes of subbasins representing Upper and Lower Kentucky, …
Physical Conditions Including Magnetic Fields In Several Star Forming Regions Of The Galaxy, Matt Lykins
Physical Conditions Including Magnetic Fields In Several Star Forming Regions Of The Galaxy, Matt Lykins
University of Kentucky Doctoral Dissertations
This document describes studies of two independent regions of the interstellar medium (ISM). These studies have the common element that both pertain to regions in our Galaxy that are known to be associated with present-day star formation. These studies aim to help us understand the ISM, star formation, and ultimately where we came from, since, after all, our star, the Sun, is itself the product of star formation 4.5 billion years ago. The first project measured the Zeeman Effect on the 21 cm H I absorption line in order to create a map of the line of sight magnetic fields …
Nonparametric Estimation Of Derivatives With Applications, Benjamin Hall
Nonparametric Estimation Of Derivatives With Applications, Benjamin Hall
University of Kentucky Doctoral Dissertations
We review several nonparametric regression techniques and discuss their various strengths and weaknesses with an emphasis on derivative estimation and confidence band creation. We develop a generalized C(p) criterion for tuning parameter selection when interest lies in estimating one or more derivatives and the estimator is both linear in the observed responses and self-consistent. We propose a method for constructing simultaneous confidence bands for the mean response and one or more derivatives, where simultaneous now refers both to values of the covariate and to all derivatives under consideration. In addition we generalize the simultaneous confidence bands to account for heteroscedastic …
Remaining Resources Of The Springfield Coal, Gerald A. Weisenfluh
Remaining Resources Of The Springfield Coal, Gerald A. Weisenfluh
Map and Chart--KGS
Historically, the Springfield (W. Ky. No. 9) opal bed has been the leading source of coal production in the Western Kentucky Coal Field. With 2009 production more than 21 million tons and another 8 million tons of idle capacity, it is also the most important resource in the state of Kentucky. The Springfield coal is known for its lateral continuity in terms of both thickness and quality. It is a medium-sulfur product, desirable for power plants with sulfur-reduction capability, and has higher Btu values and lower chlorine contents compared to other Illinois Basin areas north of Kentucky. It is estimated …
The Probabilistic Zeta Function, Bret Benesh
The Probabilistic Zeta Function, Bret Benesh
Mathematics Faculty Publications
This paper is a summary of results on the PG(s) function, which is the reciprocal of the probabilistic zeta function for finite groups. This function gives the probability that s randomly chosen elements generate a group G, and information about the structure of the group G is embedded in it.
Ozsváth-Szabó And Rasmussen Invariants Of Cable Knots, Cornelia A. Van Cott
Ozsváth-Szabó And Rasmussen Invariants Of Cable Knots, Cornelia A. Van Cott
Mathematics
We study the behavior of the Ozsváth–Szabó and Rasmussen knot concordance invariants τ and s on Km,n, the (m,n)–cable of a knot K where m and n are relatively prime. We show that for every knot K and for any fixed positive integer m, both of the invariants evaluated on Km,n differ from their value on the torus knot Tm,n by fixed constants for all but finitely many n>0. Combining this result together with Hedden’s extensive work on the behavior of τ on (m,mr+1)–cables yields bounds on the value of τ on any (m,n)–cable of K. In addition, several …
Reply To "Comment On 'Cooperation In An Evolutionary Prisoner's Dilemma On Networks With Degree-Degree Correlations' ", Stephen Devlin, T Treloar
Reply To "Comment On 'Cooperation In An Evolutionary Prisoner's Dilemma On Networks With Degree-Degree Correlations' ", Stephen Devlin, T Treloar
Mathematics
We respond to the comment of Zhu et al. [Phys. Rev. E 82, 038101 (2010)] and show that the results in question are not misleading.