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Articles 5131 - 5160 of 6792
Full-Text Articles in Entire DC Network
Yousef Studies The Physics Of Life And Health, Aldemaro Romero Jr.
Yousef Studies The Physics Of Life And Health, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
When Whales Became Mammals: The Scientific Journey Of Cetaceans From Fish To Mammals In The History Of Science, Aldemaro Romero Jr.
When Whales Became Mammals: The Scientific Journey Of Cetaceans From Fish To Mammals In The History Of Science, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Estimating Climate Trends: Application To United States Plant Hardiness Zones, Nir Krakauer
Estimating Climate Trends: Application To United States Plant Hardiness Zones, Nir Krakauer
Publications and Research
The United States Department of Agriculture classifies plant hardiness zones based on mean annual minimum temperatures over some past period (currently 1976–2005). Since temperatures are changing, these values may benefit from updating. I outline a multistep methodology involving imputation of missing station values, geostatistical interpolation, and time series smoothing to update a climate variable’s expected value compared to a climatology period and apply it to estimating annual minimum temperature change over the coterminous United States. I show using hindcast experiments that trend estimation gives more accurate predictions of minimum temperatures 1-2 years in advance compared to the previous 30 years’ …
Mba: A Market-Based Approach To Data Allocation And Migration For Cloud Database, Tengjiao Wang, Ziyu Lin, Bishan Yang, Allen Huang, Dongqing Yang, Qi Zhang, Shiwei Tang, Jinzhong Niu
Mba: A Market-Based Approach To Data Allocation And Migration For Cloud Database, Tengjiao Wang, Ziyu Lin, Bishan Yang, Allen Huang, Dongqing Yang, Qi Zhang, Shiwei Tang, Jinzhong Niu
Publications and Research
With the coming shift to cloud computing, cloud database is emerging to provide database service over the Internet. In the cloud-based environment, data are distributed at internet scale and the system needs to handle a huge number of user queries simultaneously without delay. How data are distributed among the servers has a crucial impact on the query load distribution and the system response time. In this paper, we propose a market-based control method, called MBA, to achieve query load balance via reasonable data distribution. In MBA, database nodes are treated as traders in a market, and certain market rules are …
A Grey-Box Approach To Automated Mechanism Design, Jinzhong Niu, Kai Cai, Simon Parsons, Xin Yao, Maria Fasli
A Grey-Box Approach To Automated Mechanism Design, Jinzhong Niu, Kai Cai, Simon Parsons, Xin Yao, Maria Fasli
Publications and Research
This paper presents an approach to automated mechanism design in the domain of double auctions. We describe a novel parameterized space of double auctions, and then introduce an evolutionary search method that searches this space of parameters. The approach evaluates auction mechanisms using the framework of the TAC Market Design Game and relates the performance of the markets in that game to their constituent parts using reinforcement learning. Experiments show that the strongest mechanisms we found using this approach not only win the Market Design Game against known, strong opponents, but also exhibit desirable economic properties when they run in …
Life In Transition: Consecutive Essays, Jacqueline Annette Phillips
Life In Transition: Consecutive Essays, Jacqueline Annette Phillips
Dissertations and Theses
No abstract provided.
Conservation Of Angular Momentum In A Flux Qubit, Eugene M. Chudnovsky, Dmitry A. Garanin, Michael F. O'Keeffe
Conservation Of Angular Momentum In A Flux Qubit, Eugene M. Chudnovsky, Dmitry A. Garanin, Michael F. O'Keeffe
Publications and Research
Oscillations of superconducting current between clockwis e and counterclockwise directions in a flux qubit do not conserve the angular momentum of the qubit. T o compensate for this effect the solid containing the qubit must oscillate in unison with the current. This requires entanglement of quantum states of the qubit with quantum states of a macrosco pic body. The question then arises whether slow decoherence of quantum oscillations of the cur rent is consistent with fast decoherence of quantum states of a macroscopic solid. This problem is ana lyzed within an exactly solvable quantum model of a qubit embedded in …
Collapse Of Skyrmions In Two-Dimensional Ferromagnets And Antiferromagnets, Luifei Cai, Eugene M. Chudnovsky, Dmitry A. Garanin
Collapse Of Skyrmions In Two-Dimensional Ferromagnets And Antiferromagnets, Luifei Cai, Eugene M. Chudnovsky, Dmitry A. Garanin
Publications and Research
Collapse of a skyrmion due to the discreteness of a crystal lattice in isotropic two-dimensional ferro- and antiferromagnets has been studied analytically and by numerical solution of equations of motion for up to 2000 x 2000 classical spins on a square lattice coupled via Heisenberg exchange interaction. Excellent agreement between analytical and numerical results has been achieved. The lifetime of the skyrmion scales with its initial size, lambda_0, as(lambda_0/a)^5 in ferromagnets and as (lambda_0/a)^2.15 in antiferromagnets, with a being the lattice parameter. This makes antiferromagnetic skyrmions significantly shorter lived than ferromagnetic skyrmions.
Study Of The Gelling Process In The La-Co-Citric Acid System, Luminita Predoana, Andrei Jitianu, Barbara Malic, Maria Zaharescu
Study Of The Gelling Process In The La-Co-Citric Acid System, Luminita Predoana, Andrei Jitianu, Barbara Malic, Maria Zaharescu
Publications and Research
The gelling process in the aqueous lanthanum-cobalt-citric acid system was studied using UV-VIS and IR spectroscopic methods, as well as viscosity measurements, to establish the gelling mechanism of transition metal ions (La3+ and Co2+) in the presence of chelating agent. Lanthanum and cobalt nitrates and lanthanum and cobalt acetates, respectively, were used as starting reagents, and the citric acid was used as chelating agent. The gelation process was investigated at room temperature and at 80°C. At elevated temperature, the gels were obtained after 30 h, whereas at room temperature, these were obtained in 1 month. Complex gels were formed for …
Undergraduate Bulletin 2012-2013, John Jay College Of Criminal Justice
Undergraduate Bulletin 2012-2013, John Jay College Of Criminal Justice
College Bulletins
Covers the academic year 2012-2013
Graduate Bulletin 2012-2013, Cuny John Jay College
Graduate Bulletin 2012-2013, Cuny John Jay College
College Bulletins
Covers academic year 2012-2013
The Effect Of Dissolved Humic Acids On Aluminosilicate Formation And Associated Carbon Sequestration, Ashaki A. Rouff, Brian L. Phillips, Stacey G. Cochiara, Kathryn L. Nagy
The Effect Of Dissolved Humic Acids On Aluminosilicate Formation And Associated Carbon Sequestration, Ashaki A. Rouff, Brian L. Phillips, Stacey G. Cochiara, Kathryn L. Nagy
Publications and Research
Allophane and imogolite neogenesis in soils may occur in the presence of organic matter. To understand this process under conditions relevant to soils, the influence of dissolved organic carbon (DOC) as humic acid (HA), on aluminosilicate formation was studied at 25◦C, pH 6, and low-DOC concentrations. For solutions with initial Al/Si ratios of 1–2.1, and 0–6mg/L DOC, precipitates recovered after 20h had Al/Si ratios of 2.2–2.7. The formation of allophane, imogolite-like material, and aluminosilicate gel was confirmed by XRD, FTIR, and NMR. The effect of DOC was to produce a small, but systematic increase in imogolite-like Si in the precipitate, …
Beefmoves: Dissemination, Diversity, And Dynamics Of English Borrowings In A German Hip Hop Forum, Matt Garley, Julia Hockenmaier
Beefmoves: Dissemination, Diversity, And Dynamics Of English Borrowings In A German Hip Hop Forum, Matt Garley, Julia Hockenmaier
Publications and Research
We investigate how novel English-derived words (anglicisms) are used in a German-language Internet hip hop forum, and what factors contribute to their uptake.
Thermal Analysis Of Organically Modified Siloxane Melting Gels, Andrei Jitianu, Kristin Lammers, Georgia A. Arbuckle-Kiel, Lisa C. Klein
Thermal Analysis Of Organically Modified Siloxane Melting Gels, Andrei Jitianu, Kristin Lammers, Georgia A. Arbuckle-Kiel, Lisa C. Klein
Publications and Research
Hybrid melting gels were prepared by a sol–gel process, starting with a mono-substituted siloxane and a disubstituted siloxane, methyltrimethoxysilane (MTES) together with dimethyldimethoxysilane (DMDES). Five gel compositions were prepared with concentrations between 50% MTES–50% DMDES and 75% MTES–25% DMDES (in mol.%).
Homogeneous Besov Spaces On Stratified Lie Groups And Their Wavelet Characterization, Hartmut Fuhr, Azita Mayeli
Homogeneous Besov Spaces On Stratified Lie Groups And Their Wavelet Characterization, Hartmut Fuhr, Azita Mayeli
Publications and Research
We establish wavelet characterizations of homogeneous Besov spaces on stratified Lie groups, bothin terms of continuous and discrete wavelet systems. We first introduce a notion of homogeneous Besov space ̇Bsp,qin terms of a Littlewood-Paley-type decomposition, in analogy to the well-known characterization of the Euclidean case. Such decompositions can be defined via the spectral measure of a suitably chosen sub-Laplacian. We prove that the scale of Besov spaces is independent of the precise choice of Littlewood-Paley decomposition. In particular, different sub-Laplacians yield the same Besov spaces. We then turn to wavelet characterizations, first via continuous wavelet transforms which can be viewed …
Equivariant Degenerations Of Spherical Modules For Groups Of Type A, Stavros Argyrios Papadakis, Bart Van Steirteghem
Equivariant Degenerations Of Spherical Modules For Groups Of Type A, Stavros Argyrios Papadakis, Bart Van Steirteghem
Publications and Research
Let G be a complex reductive algebraic group. Fix a Borel subgroup B of G and a maximal torus T in B. Call the monoid of dominant weights L+ and let S be a finitely generated submonoid of L+. V. Alexeev and M. Brion introduced a moduli scheme MS which classifies affine G-varieties X equipped with a T-equivariant isomorphism SpecC[X]U → SpecC[S], where U is the unipotent radical of B. Examples of MS have been obtained by S. Jansou, P. Bravi and S. Cupit-Foutou. In this paper, we prove that MS is isomorphic to an affine space when S is …
Cross-Talk: A Shared Parameter Space For Gesturally Extended Human/Machine Improvisation, William Brent, Adam James Wilson
Cross-Talk: A Shared Parameter Space For Gesturally Extended Human/Machine Improvisation, William Brent, Adam James Wilson
Publications and Research
This paper describes Cross-talk, a piece of music and performance system for two instruments augmented with infrared motion-tracking capability, and an artificial software improviser. Cross-talk was commissioned by the Ammerman Center for Arts and Technology at Connecticut College, for the 13th Biennial Symposium on Arts and Technology. The work is part of an ongoing collaboration focused on developing integrated hardware and software performance systems to extend the timbral and expressive capabilities of traditional musical instruments and to generate musical structure in response to information retrieved from human performers in real-time. Artistic motivations and prior related work are presented here, along …
Economic Design Of Acceptance Sampling Plans In A Two-Stage Supply Chain, Lie-Fern Hsu, Jia-Tzer Hsu
Economic Design Of Acceptance Sampling Plans In A Two-Stage Supply Chain, Lie-Fern Hsu, Jia-Tzer Hsu
Publications and Research
Supply Chain Management, which is concerned with material and information flows between facilities and the final customers, has been considered the most popular operations strategy for improving organizational competitiveness nowadays. With the advanced development of computer technology, it is getting easier to derive an acceptance sampling plan satisfying both the producer’s and consumer’s quality and risk requirements. However, all the available QC tables and computer software determine the sampling plan on a noneconomic basis. In this paper, we design an economic model to determine the optimal sampling plan in a two-stage supply chain that minimizes the producer’s and the consumer’s …
Ledzewicz Applies Math To Health Sciences, Aldemaro Romero Jr.
Ledzewicz Applies Math To Health Sciences, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Hamad Studies, Teaches Properties Of Light, Aldemaro Romero Jr.
Hamad Studies, Teaches Properties Of Light, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Minchin Studies, Teaches Conservation Issues, Aldemaro Romero Jr.
Minchin Studies, Teaches Conservation Issues, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Ackad Uses Power Computers To Solve Problems, Aldemaro Romero Jr.
Ackad Uses Power Computers To Solve Problems, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Jones Seeks To Engage Students In Chemistry, Aldemaro Romero Jr.
Jones Seeks To Engage Students In Chemistry, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Hildebrandt Teaches Lessons About Tornadoes, Aldemaro Romero Jr.
Hildebrandt Teaches Lessons About Tornadoes, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Voss Feels People Need To Know How Nature Works, Aldemaro Romero Jr.
Voss Feels People Need To Know How Nature Works, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Jennings Studies Environmental Pollutants, Aldemaro Romero Jr.
Jennings Studies Environmental Pollutants, Aldemaro Romero Jr.
Publications and Research
No abstract provided.
Morphine And Clonidine Synergize To Ameliorate Low Back Pain In Mice, Maral Tajerian, Magali Millecamps, Laura S. Stone
Morphine And Clonidine Synergize To Ameliorate Low Back Pain In Mice, Maral Tajerian, Magali Millecamps, Laura S. Stone
Publications and Research
Chronic low back pain (LBP) is a debilitating condition associated with signs of axial and radiating pain. In humans with chronic LBP, opioids are often prescribed with varying outcomes and a multitude of side effects. Combination therapies, in which multiple pharmacological agents synergize to ameliorate pain without similar potentiation of adverse reactions, may be useful in improving therapeutic outcome in these patients. The SPARC-null mouse model of low back pain due to disc degeneration was used to assess the effects of opioid (morphine) andα2-adrenergic agonist (clonidine) coadministration on measures of axial and radiating pain. The results indicate that systemic morphine …
A Study Of The Electrocoalescence On Spherical Droplets In A Flow Focusing Juction Microchannel, Shady A. Habib
A Study Of The Electrocoalescence On Spherical Droplets In A Flow Focusing Juction Microchannel, Shady A. Habib
Dissertations and Theses
No abstract provided.
Lattice Boltzmann Simulation Of Binary Drop Coalescence At Low Weber Number, Lina Baroudi
Lattice Boltzmann Simulation Of Binary Drop Coalescence At Low Weber Number, Lina Baroudi
Dissertations and Theses
"A numerical study has been performed using a lattice Boltzmann method (LBM) for an incompressible binary fluid based on the Cahn-Hilliard diffuse interface approach to investigate the early-time coalescence dynamics of two liquid drops. The two drops approach each other at a very low Weber number (We) and the coalescence process is driven by surface tension. When the two drops come into contact, the curvature diverges and causes infinitely large surface tension forces, leading to the formation of a rapidly growing liquid bridge. Depending on the forces that govern the widening of the liquid bridge, the coalescence dynamics can be …
Interaction Of Long- And Short-Term Memory On Selective Attention During Timbre Discrimination, Eva Garcia
Interaction Of Long- And Short-Term Memory On Selective Attention During Timbre Discrimination, Eva Garcia
Dissertations and Theses
The present study investigated the effects of short- and long-term memory on processes of selective attention during timbre discrimination. Pitch served as the distractor dimension, held constant on standard trials and deviating from the standard frequency on distractor trials. Short-term memory was operationalized as levels of covariate context: Within a block of trials, pitch deviants (p=.28) were either absent (baseline condition), varied orthogonally (filtering condition) or systematically (positive and perfect conditions) with timbre values. Long-term memory was operationalized as levels of psychophysical context: Within a block of trials, the range of pitch change was psychophysically equated with timbre change in …