cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Trace preserving quantum dynamics using a novel reparametrization-neutral summation-by-parts difference operator
Creators: name: Ålund, Oskar
name: Akamatsu, Yukinao
name: Laurén, Fredrik
name: Miura, Takahiro
name: Nordström, Jan
name: Rothkopf, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We develop a novel numerical scheme for the simulation of dissipative quantum dynamics following from two-body Lindblad master equations. All defining continuum properties of the Lindblad dynamics, hermiticity, positivity and in particular trace conservation of the evolved density matrix are preserved. The central ingredient is a new spatial difference operator, which not only fulfils the summation by parts (SBP) property but also implements a continuum reparametrization property. Using the time evolution of a heavy-quark anti-quark bound state in a hot thermal medium as an explicit example, we show how the reparametrization neutral summation-by-parts (RN-SBP) operator preserves the continuum properties of the theory.
description: 34 pages, 7 figures, open-access code available via https://doi.org/10.5281/zenodo.3744460
Incorrect Data in the Widely Used Inside Airbnb Dataset
Creators: name: Alsudais, Abdulkareem
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Several recently published papers in Decision Support Systems discussed issues related to data quality in Information Systems research. In this short research note, I build on the work introduced in these papers and document two data quality issues discovered in a large open dataset commonly used in research. Inside Airbnb (IA) collects data from places and reviews as posted by users of Airbnb.com. Visitors can effortlessly download data collected by IA for several locations around the globe. While the dataset is widely used in academic research, no thorough investigation of the dataset and its validity has been conducted. This note examines the dataset and explains an issue of incorrect data added to the dataset. Findings suggest that this issue can be attributed to systemic errors in the data collection process. The results suggest that the use of unverified open datasets can be problematic, although the discoveries presented in this work may not be significant enough to challenge all published research that used the IA dataset. Additionally, findings indicate that the incorrect data happens because of a new feature implemented by Airbnb. Thus, unless changes are made, it is likely that the consequences of this issue will only become more severe. Finally, this note explores why reproducibility is a problem when two different releases of the dataset are compared.
Additional file 9 of Phylogenetic analysis of the Tc1/mariner superfamily reveals the unexplored diversity of pogo-like elements
Creators: name: Dupeyron, Mathilde
name: Baril, Tobias
name: Bass, Chris
name: Hayward, Alexander
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional File 15. Table showing the results of assessing the copy number of full-length mariner and pogo elements in the Hydra vulgaris genome.
Additional file 1 of Phylogenetic analysis of the Tc1/mariner superfamily reveals the unexplored diversity of pogo-like elements
Creators: name: Dupeyron, Mathilde
name: Baril, Tobias
name: Bass, Chris
name: Hayward, Alexander
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Taxonomic information for each eukaryote host represented in the phylogenetic tree
Study of localization in the quantum sawtooth map emulated on a quantum information processor
Creators: name: Henry, Michael K.
name: Emerson, Joseph
name: Martinez, Rudy
name: Cory, David G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers will be unique tools for understanding complex quantum systems. We report an experimental implementation of a sensitive, quantum coherence-dependent localization phenomenon on a quantum information processor (QIP). The localization effect was studied by emulating the dynamics of the quantum sawtooth map in the perturbative regime on a three-qubit QIP. Our results show that the width of the probability distribution in momentum space remained essentially unchanged with successive iterations of the sawtooth map, a result that is consistent with localization. The height of the peak relative to the baseline of the probability distribution did change, a result that is consistent with our QIP being an ensemble of quantum systems with a distribution of errors over the ensemble. We further show that the previously measured distributions of control errors correctly account for the observed changes in the probability distribution.
description: 20 pages, 9 figures
Racionalidade dos agricultores: que dizem os dados?
Creators: name: Alves, Eliseu Roberto De Andrade
name: Alves, Eliseu Roberto De Andrade
Publisher: name: Unknown
Year: 2003
Subjects: subject: Production Economics
subject: Custo
subject: Renda líquida
subject: Agricultura

description: Os dados com os quais os economistas trabalham foram gerados por agentes que tomaram decisões baseadas no conhecimento que tiveram dos mercados, de tecnologias e de como se comportam perante o risco. Numa economia competitiva, o mercado induz à busca da máxima eficiência, que se traduz na minimização de custo, quando o nível de produção é fixado, ou na maximização da renda líquida, quando se deixa aquela restrição de lado. É claro que, no nível de produção correspondente à renda líquida máxima, o custo é também mínimo. Assim, é pertinente perguntar se os dados revelam que os produtores minimizam custo ou maximizam a renda líquida, e que implicações isto tem na existência da função custo e de produção. Este trabalho procura responder a estas questões, numa exposição em que se realçam conceitos, deixando de lado a demonstração de teoremas.
Summing Logs of the Velocity in NRQCD and Top Threshold Physics
Creators: name: Hoang, A. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: To achieve reliable predictions of the top-antitop threshold cross section at a future e+e- Linear Collider logarithms of the top velocity need to be resummed. I review the issues that make this problem complicated and show how the task can be achieved by renormalization in an effective theory using the so called velocity renormalization group. The most recent NNLL order results are discussed.
description: 12 pages, uses ws-procs9x6.cls and rotating_pr.sty, 2 ps figures. Invited talk at Continuous Advances in QCD 2004, Minneapolis, USA, May 13-16,2004
Vitázó gondolatok Gazdag László: Az agrárgazdaság és az „erős” forint című cikkéhez
Creators: name: Kovacs, Gabor
name: Kovacs, Gabor
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: gazdaságpolitikai célok
subject: célkonfl iktus
subject: a forint túlértékeltségének következményei
subject: economic policy goals
subject: conflicts of goals
subject: consequences of appreciation

description: Az árszínvonal-stabilitás csak egyike az alapvető gazdaságpolitikai célkitűzéseknek, amely konfl iktusos viszonyban áll egy másik kulcsfontosságú céllal, a magas szintű foglalkoztatottsággal. Ezért nagyon körültekintően szükséges meghatározni a dezinfl ációs politika szerepét és az alkalmazott eszközöket. ------------------------- Stability of price level is only one of major policy goals and contrasts with another key policy goal, namely employment. Therefore it is necessary to define role of deflation policy and to select its means circumspectedly.
A Field Approach to 3D Gene Expression Pattern Characterization
Creators: name: Costa, L. da F.
name: Travencolo, B. A. N.
name: Azeredo, A.
name: Beletti, M. E.
name: Beletti, M. E.
name: Rasskin-Gutman, D.
name: Sternik, G.
name: Belmonte, J. C. I.
name: Mueller, G. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Genomics (q-bio.GN)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We present a vector field method for obtaining the spatial organization of 3D patterns of gene expression based on gradients and lines of force obtained by numerical integration. The convergence of these lines of force in local maxima are centers of gene expression, providing a natural and powerful framework to characterize the organization and dynamics of biological structures. We apply this novel methodology to analyze the expression pattern of the Enhanced Green Fluorescent Protein (EGFP) driven by the promoter of light chain myosin II during zebrafish heart formation.
description: 9 pages, 2 figures, The following article has been submitted to Applied Physics Letters. If it is published, it will be found online at http://apl.aip.org
SWOT Analysis of New-type Industrialization in Traditional Agricultural Areas
Creators: name: Wu, Yanling
name: Wu, Yanling
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: Traditional agricultural area
subject: New-type industrialization road
subject: SWOT analysis
subject: China

description: SWOT analysis method is used to discuss the new-type industrialization in traditional agricultural areas. Among them, advantages of new-type industrialization in traditional agricultural areas are analyzed from four aspects of labor advantage, land advantage, product advantage and environmental advantage. Disadvantages of new-type industrialization in traditional agricultural areas are also analyzed from four aspects of geographical disadvantage, inferior labor quality, informal system disadvantage, and backward non-agricultural industry. At the same time, opportunities for new-type industrialization in traditional agricultural areas are analyzed from three aspects of land system innovation, rural social security system, and financial policy supporting “Three Agriculture” development. Threats for the new-type industrialization in traditional agricultural areas are also analyzed from the impact of the international market on agricultural products, threat of urban industry and threat of other agricultural areas. SPSS16.0 software and K-Means cluster analysis method are used to classify the traditional agricultural areas into four categories according to the advantage differences and overall characteristics in traditional agricultural areas. Strategic modes of new-type industrialization are provided, such as SO strategy (traditional agricultural area with strong competitiveness), ST strategy (traditional agricultural areas with relatively strong competitiveness), WO strategy (traditional agricultural areas with normal competitiveness) and WT strategy (traditional agricultural areas with weak competitiveness), in order to make strategic mode suitable for different traditional agricultural areas and to offer references fro decision making of government.
"slha.tar.gz" of "Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in sqrt(s) = 7 TeV pp collisions with the ATLAS detector"
Creators: name: ATLAS Collaboration
Publisher: name: HEPData
Year: 2012

description: SLHA files (unpack then view slha.html)
description: CERN-LHC. Data are presented from the measurements of final states comprising three leptons (electrons or muons) and missing transverse energy in proton proton collisions at a centre-of-mass energy of 7 Tev. The data sample has a total integrated luminosity of 4.7fb-1 and is interpreted in the pMSSM and in simplified models using different signal regions. You are referred to the text of the paper for more details.
A Haida writing : about Chief Wiiaa
Creators: name: Sparrow, Kathy Bedard
Publisher: name: University of British Columbia
Year: 2009

description: My thesis is a life history of Chief William Matthews, the fourth and last hereditary chief Wiiaa of Masset Haida, who was also my grandfather. Of paramount value in telling his story is the significant role of my grandmother, Emma Matthews, in his life. Examining his life history and the role he played in his community and the province is significant because he lived during a critical period in the history of British Columbia. He lived in a traditional cedar plank house, reported to be the largest Haida house on the Queen Charlotte Islands, and by the time he was an elder, he was among special guests for the opening of the 1973 fall session of the BC Legislature. His life spanned a period from the suppression of the potlatch to the public rebirth of potlatch activities in the 1970s. Stories told about my grandfather are significant because of his role as a chief and because they address changes in potlatching and rank today. As a framework, I draw on ethnohistoric accounts that pertain to my grandfather's hereditary title. Anthropologists such as Stearns, Blackman, and Boelscher, who have conducted fieldwork in my community of Masset and who have worked with one or both of my grandparents, have provided rich published material for research. I had the good fortune of receiving fieldnotes produced by Boelscher, who lived and worked with my grandmother, Emma Matthews, as she carried out her fieldwork among the Masset Haida elders from 1971-1981. Nancy Turner's tape-recorded interviews with both of my grandparents from the early 1970s are also of great value to me. Finally I interviewed both family and community members about my grandparent's lives. Through the oral narratives presented here, the reader will gain a richer sense of my grandparent's compelling personalities, and to their important social and ceremonial roles. This life history account will provide a model for research and the writing of an oral history account from within a Haida genre.
Additional file 1 of Patient-Initiated Follow-Up (PIFU) as reorganized support for increased patient involvement – focus group discussions among patients’ with inflammatory arthritis
Creators: name: Bech, Bianca
name: Lykkegaard, Jens Jørgen
name: Lundbak, Tine
name: Schrøder, Heidi Morsø
name: Birkeland, Line Mette
name: Schlyter, Mette Lund
name: Hansen, Lotte Hanne
name: Dalsgaard, Lillian
name: Esbensen, Bente Appel
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1. The COREQ (COnsolidated criteria for REporting Qualitative research) checklist applied this manuscript is provided as additional material.
Basis set convergence in extended systems: infinite hydrogen fluoride and hydrogen chloride chains
Creators: name: Buth, Christian
name: Paulus, Beate
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Basis set convergence of the Hartree-Fock and the correlation energy is examined for the hydrogen bonded infinite bent chains (HF)_infinity and (HCl)_infinity. We employ series of correlation consistent basis sets up to quintuple zeta quality together with a coupled cluster method (CCSD) to describe electron correlation on ab initio level. The Hartree-Fock energy converges rapidly with increasing basis set quality whereas the correlation energy is found to be slowly convergent for the same series of basis sets. We study basis set extrapolation for (HF)_infinity and (HCl)_infinity and show that it substantially enhances the accuracy of both the Hartree-Fock and the correlation energy in extended systems.
description: 12 pages, 4 figures, 4 tables, LaTeX, corrected typos
Additional file 8 of Phylogenetic analysis of the Tc1/mariner superfamily reveals the unexplored diversity of pogo-like elements
Creators: name: Dupeyron, Mathilde
name: Baril, Tobias
name: Bass, Chris
name: Hayward, Alexander
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional File 14. Phylogenetic tree of the amino-acid DDD/E transposase domain of TIGD-like elements. The tree results from a phylogenetic analysis using maximum likelihood inference, with 1000 bootstrap repetitions. Clades are divided into groups, with a corresponding clade name and number to the right. The host genome for each element is indicated to the right hand side of its ID, and labels are coloured broadly according to the taxonomic kingdom and class that the host species belongs to: shades of blue for metazoans, purple for excavates (Parabasalids), dark red for oomycetes (Stramenopiles), yellow for amoebozoans, shades of orange for fungi (pink for Basidiomycota), and shades of green for plants.
A compact holographic projector module for high-resolution 3D multi-site two-photon photostimulation
Creators: name: Go, Mary Ann
name: Mueller, Max
name: Castañares, Michael Lawrence
name: Egger, Veronica
name: Daria, Vincent R.
Publisher: name: Universität Regensburg
Year: 2019
Subjects: subject: 590 Tiere (Zoologie)

description: Patterned two-photon (2P) photolysis via holographic illumination is a powerful method to investigate neuronal function because of its capability to emulate multiple synaptic inputs in three dimensions (3D) simultaneously. However, like any optical system, holographic projectors have a finite space-bandwidth product that restricts the spatial range of patterned illumination or field-of-view (FOV) for a desired resolution. Such trade-off between holographic FOV and resolution restricts the coverage within a limited domain of the neuron’s dendritic tree to perform highly resolved patterned 2P photolysis on individual spines. Here, we integrate a holographic projector into a commercial 2P galvanometer-based 2D scanning microscope with an uncaging unit and extend the accessible holographic FOV by using the galvanometer scanning mirrors to reposition the holographic FOV arbitrarily across the imaging FOV. The projector system utilizes the microscope’s built-in imaging functions. Stimulation positions can be selected from within an acquired 3D image stack (the volume-of-interest, VOI) and the holographic projector then generates 3D illumination patterns with multiple uncaging foci. The imaging FOV of our system is 800×800 μm2 within which a holographic VOI of 70×70×70 μm3 can be chosen at arbitrary positions and also moved during experiments without moving the sample. We describe the design and alignment protocol as well as the custom software plugin that controls the 3D positioning of stimulation sites. We demonstrate the neurobiological application of the system by simultaneously uncaging glutamate at multiple spines within dendritic domains and consequently observing summation of postsynaptic potentials at the soma, eventually resulting in action potentials. At the same time, it is possible to perform two-photon Ca2+ imaging in 2D in the dendrite and thus to monitor synaptic Ca2+ entry in selected spines and also local regenerative events such as dendritic action potentials.
An Assessment of the Radio Frequency Electromagnetic Field Exposure from A Massive MIMO 5G Testbed
Creators: name: Loh, Tian Hong
name: Heliot, Fabien
name: Cheadle, David
name: Fielder, Tom
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Current radiofrequency electromagnetic field (RF-EMF) exposure limits have become a critical concern for fifth-generation (5G) mobile network deployment. Regulation is not harmonized and in certain countries and regions it goes beyond the guidelines set out by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). Using a massive multiple-input-multiple-output (mMIMO) testbed with beamforming capabilities that is capable of mimicking realistic 5G base station (BS) performance, this paper presents an experimental and statistical assessment of its associated RF-EMF exposure within a real-world indoor environment. The mMIMO testbed has up to 128 channels with user-programmable software defined radio (SDR) capability. It could perform zero-forcing precoding after channel state information (CSI) acquisition for different beamforming scenarios with respect to the associated user terminal antenna setups and positions. With 64 active mMIMO transmit antennas, 8 beamforming scenarios have been considered for single-user (SU) and multi-user (MU) downlink communications at different locations. Using a calibrated triaxial isotropic field-probe, the received channel power heat map for each beamforming scenario was acquired and then converted into an RF-EMF heat map. The relevant RF-EMF statistics was evaluated based on the variations of beam profiles and number of users.
description: The 14th European Conference on Antennas and Propagation (EuCAP 2020)
The demon stories of Hong Mai’s Yijianzhi
Creators: name: Grundvig, Julie
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines a selection of demon stories in the Yijianzhi (Records of Yijian), a compilation of stories and anecdotes recorded by the Song historian Hong Mai (1123-1202). This collection has been largely neglected by scholars until very recently. Falling under the category of zhiguai or "records of anomalies," the stories in the Yijianzhi primarily concern supernatural events, gathered by Hong Mai from family, friends and acquaintances. Similar to belief legends, the stories contain repetitive themes and plot-structure carried over from earlier zhiguai. Demon stories make up a considerable portion of the supernatural stories within the collection and are identifiable by their adherence to a common plot-type, in which a protagonist relies on magic and the aid of a religious specialist to destroy a malevolent demon. The stories are significant for the information they contain on Buddhist, Daoist, and popular ritual during the Song. Through a close reading and translation of ten stories, we gain a vivid picture of how people of the Song conceptualized the world of the demonic and how their perspectives were shaped by religious beliefs that informed their daily lives.
Elinvar effect in $β-$Ti simulated by on-the-fly trained moment tensor potential
Creators: name: Shapeev, Alexander V.
name: Podryabinkin, Evgeny V.
name: Gubaev, Konstantin
name: Tasnádi, Ferenc
name: Abrikosov, Igor A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A combination of quantum mechanics calculations with machine learning (ML) techniques can lead to a paradigm shift in our ability to predict materials properties from first principles. Here we show that on-the-fly training of an interatomic potential described through moment tensors provides the same accuracy as state-of-the-art {\it ab inito} molecular dynamics in predicting high-temperature elastic properties of materials with two orders of magnitude less computational effort. Using the technique, we investigate high-temperature bcc phase of titanium and predict very weak, Elinvar, temperature dependence of its elastic moduli, similar to the behavior of the so-called GUM Ti-based alloys [T. Sato {\ it et al.}, Science {\bf 300}, 464 (2003)]. Given the fact that GUM alloys have complex chemical compositions and operate at room temperature, Elinvar properties of elemental bcc-Ti observed in the wide temperature interval 1100--1700 K is unique.
description: 15 pages, 4 figures
Time-Resolved Spin Torque Switching and Enhanced Damping in Py/Cu/Py Spin-Valve Nanopillars
Creators: name: Emley, N. C.
name: Krivorotov, I. N.
name: Garcia, A. G. F.
name: Ozatay, O.
name: Sankey, J. C.
name: Ralph, D. C.
name: Buhrman, R. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report time-resolved measurements of current-induced reversal of a free magnetic layer in Py/Cu/Py elliptical nanopillars at temperatures T = 4.2 K to 160 K. Comparison of the data to Landau-Lifshitz-Gilbert macrospin simulations of the free layer switching yields numerical values for the spin torque and the Gilbert damping parameters as functions of T. The damping is strongly T-dependent, which we attribute to the antiferromagnetic pinning behavior of a thin permalloy oxide layer around the perimeter of the free layer. This adventitious antiferromagnetic pinning layer can have a major impact on spin torque phenomena.
description: 5 pages, 4 figures
Effects of Land Circulation on the Development of Modern Agriculture
Creators: name: Wu, Zhe
name: Li, Jing
name: Wu, Zhe
name: Li, Jing
Publisher: name: Unknown
Year: 2009
Subjects: subject: Land Economics/Use
subject: Land circulation
subject: Modern agriculture
subject: Marginal expectation
subject: Scale economy
subject: China

description: Based on the introduction of modern agriculture, relationship between land circulation and modern agriculture is discussed. This relationship is reflected mainly in two aspects. Firstly, land circulation is a necessary requirement for the development of modern agriculture, which can speed up the adjustment of agricultural structure and realize the scale management, accelerate the transfer of the rural population and improve the agricultural income, enhance the risk resisting ability of agriculture and the response of agriculture to market challenges. Secondly, development of modern agriculture must be based on land circulation. Land circulation can not only provide resource allocation basis for modern agriculture, but also offer economic benefit basis for modern agriculture. 2007 China Statistical Yearbook, agricultural product output (Y), agricultural employees (L) and other relevant data in 19 provinces are obtained. CES production function is used to reflect the agricultural employees (L), agricultural capital investment (K) and agricultural product output (Y), in order to calculate the agricultural production function. Result shows that contribution of labor force to output is negative, while the contribution of capita to output is positive. Meanwhile, the substitution elasticity of capital for labor is 1.11, indicating that every 1% increase of labor force will lead to the 1.11% enhancement of farmers’ capital.
Comment on "Measurability of nonequilibrium thermodynamics in terms of the Hamiltonian of mean force"
Creators: name: Talkner, Peter
name: Hänggi, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In a recent paper [P. Strasberg and M. Esposito, Phys. Rev. E {\bf 101}, 050101(R) (2020)] an attempt is presented to formulate the nonequilibrium thermodynamics of an open system in terms of the Hamiltonian of mean force. The purpose of the present comment is to clarify severe restrictions of this approach and also to stress that recently noted ambiguities [P. Talkner and P. Hänggi, Phys. Rev. E {\bf 94}, 022143 (2016)] of fluctuating thermodynamic potentials cannot be removed in the suggested way.
description: 4 pages, comment, discussion expanded, references added
Marine spatial planning techniques with a case study on wave-powered offshore aquaculture farms
Creators: name: Ewig, Gabriel
name: Hasankhani, Arezoo
name: Won, Eugene
name: Haji, Maha
Publisher: name: arXiv
Year: 2024
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: As emerging marine technologies lead to the development of new infrastructure across the ocean, they enter an environment that existing ecosystems and industries already rely on. Although necessary to provide sustainable sources of energy and food, careful planning will be important to make informed decisions and avoid conflicts. This paper examines several techniques used for marine spatial planning, an approach for analyzing and planning the use of marine resources. Using open source software including QGIS and Python, the potential for developing wave-powered offshore aquaculture farms using the RM3 wave energy converter along the Northeast coast of the United States is assessed and several feasible sites are identified. The optimal site, located at 43.7°N, 68.9°W along the coast of Maine, has a total cost for a 5-pen farm of \$56.8M, annual fish yield of 676 tonnes, and a levelized cost of fish of \$9.23 per kilogram. Overall trends indicate that the cost greatly decreases with distance to shore due to the greater availability of wave energy and that conflicts and environmental constraints significantly limit the number of feasible sites in this region.
Changing Participation in Food Assistance Programs Among Low-Income Children After Welfare Reform
Creators: name: Todd, Jessica E.
name: Newman, Constance
name: Ver Ploeg, Michele
name: Todd, Jessica E.
name: Newman, Constance
name: Ver Ploeg, Michele
Publisher: name: Unknown
Year: 2010
Subjects: subject: Public Economics
subject: Food Stamp Program
subject: SNAP
subject: food assistance
subject: welfare reform
subject: WIC
subject: school meals
subject: National School Lunch Program
subject: School Breakfast Program
subject: TANF
subject: AFDC
subject: multiple program use
subject: Survey of Income and Program Participation

description: In 1996, the safety net for poor households with children fundamentally changed when Federal legislation replaced Aid to Families with Dependent Children (AFDC) with Temporary Assistance for Needy Families (TANF). This study investigates participation in, and benefits received from, AFDC/TANF and food assistance programs, before and after the legislation, for children in low-income households (income below 300 percent of the Federal poverty line). The results show that, between 1990 and 2004, the share of children receiving food stamp benefits declined, most notably among children in the poorest households (income below 50 percent of the Federal poverty line). The share of children receiving benefits from the school meals programs and the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) rose, mainly among children in low-income households with income above the Federal poverty line. Overall, the share of children in households that received benefits from AFDC/TANF or food assistance programs grew from 35 percent to 52 percent. However, the net result of these changes is that average total inflation-adjusted household benefits from all programs examined declined. The decline was largest among children in the poorest households.
How much time do we have before catastrophic disclosure occurs?
Creators: name: Szydagis, Matthew
Publisher: name: arXiv
Year: 2024
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Claims of the retrieval of crashed craft or vehicles from non-human intelligence(s) (NHI) abound in the popular culture and media. For this article, the number of unsubstantiated claims is utilized to estimate the time expected until a "catastrophic disclosure" occurs. The term was defined at the 2023 Sol Foundation's inaugural conference as an accidental disclosure of strong evidence of the existence of NHI. The phrase refers to this occurring outside the control of major human institutions, such as governments and militaries. One possible example of this is the crash of a piloted (space)craft or ET probe in the middle of a busy metropolis (such as the New York City Times Square). The distribution of humans across the Earth's surface, the population as a function of time, and the fraction of individuals owning a camera-phone, also versus time, are each taken into consideration as a foundation for a rigorous statistical analysis. This author adopts a skeptical and agnostic approach and does not conclude NHI or ET are real, but applies standard statistical distributions as educational examples of critical thinking to an issue which captures the imagination of the public as almost no other issue does. Making the extraordinary assumptions that sentient species other than humans exist, are capable of constructing vehicles for transportation, and are sufficiently fallible that their technology can malfunction, it becomes possible to quantify some potential answers to the question of how long it might be before smartphone imagery and/or video evidence appears on the web and becomes irrevocable via classification in the modern era. Results of simulations of numerous potential scenarios with varying degrees of optimism indicate that, if NHI are real, catastrophic disclosure may actually happen accidentally rather soon, with the mean expected year being 2040 +/- 20 under the default assumptions.
description: 8 pages, 3 figures, 4 equations, and 41 references
Two-fluid model for a rotating trapped Fermi gas in the BCS phase
Creators: name: Urban, Michael
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the dynamical properties of a superfluid gas of trapped fermionic atoms in the BCS phase. As a simple example we consider the reaction of the gas to a slow rotation of the trap. It is shown that the currents generated by the rotation can be understood within a two-fluid model similar to the one used in the theory of superconductors, but with a position dependent ratio of normal and superfluid densities. The rather general result of this paper is that already at very low temperatures, far below the critical one, an important normal-fluid component appears in the outer regions of the gas. This renders the experimental observation of superfluidity effects more difficult and indicates that reliable theoretical predictions concerning other dynamical properties, like the frequencies of collective modes, can only be made by taking into account temperature effects.
description: 6 pages, 4 figures
Piecewise smooth stationary Euler flows with compact support via overdetermined boundary problems
Creators: name: Domínguez-Vázquez, Miguel
name: Enciso, Alberto
name: Peralta-Salas, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We construct new stationary weak solutions of the 3D Euler equation with compact support. The solutions, which are piecewise smooth and discontinuous across a surface, are axisymmetric with swirl. The range of solutions we find is different from, and larger than, the family of smooth stationary solutions recently obtained by Gavrilov and Constantin-La-Vicol; in particular, these solutions are not localizable. A key step in the proof is the construction of solutions to an overdetermined elliptic boundary value problem where one prescribes both Dirichlet and (nonconstant) Neumann data.
Achieving large zeta-potentials with charged porous surfaces
Creators: name: Vinogradova, Olga I.
name: Silkina, Elena F.
name: Bag, Naren
name: Asmolov, Evgeny S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We discuss an electro-osmotic flow near charged porous coatings of a finite hydrodynamic permeability, impregnated with an outer electrolyte solution. It is shown that their electrokinetic (zeta) potential is generally augmented compared to the surface electrostatic potential, thanks to a large liquid slip at their surface emerging due to an electro-osmotic flow in the enriched by counter-ions porous films. The inner flow shows a very rich behavior controlled by the volume charge density of the coating, its Brinkman length, and concentration of added salt. Interestingly, even for relatively small Brinkman length the zeta-potential can, in some cases, become huge, providing a very fast outer flow in the bulk electrolyte. When the Brinkman length is large enough, the zeta-potential could be extremely high even at practically vanishing surface potential. To describe the slip velocity in a simple manner, we introduce a concept of an electro-osmotic slip length and demonstrate that the latter is always defined by the hydrodynamic permeability of the porous film, and also, depending on the regime, either by its volume charge density or the salt concentration. These results provide a framework for the rational design of porous coatings to enhance electrokineic phenomena, and for tuning their properties by adjusting bulk electrolyte concentrations, with direct applications in microfluidics.
Additional file 1 of The impact of the COVID-19 pandemic on final year medical students in the United Kingdom: a national survey
Creators: name: Choi, Byung
name: Jegatheeswaran, Lavandan
name: Minocha, Amal
name: Alhilani, Michel
name: Nakhoul, Maria
name: Mutengesa, Ernest
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 1. 10 point questionnaire that was designed and sent to final year medical students. Aim of this survey was to identify changes to assessments as a consequence of COVID-19 and how this impacted their attitudes, confidence and preparedness in starting as a doctor.
Estimates of Characteristic numbers of real algebraic varieties
Creators: name: Laszlo, Yves
name: Viterbo, Claude
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We give some explicit bounds for the number of cobordism classes of real algebraic manifolds of real degree less than $d$, and for the size of the sum of $\mod 2$ Betti numbers for the real form of complex manifolds of complex degree less than $d$.
Marketing U.S. Organic Foods: Recent Trends From Farms to Consumers
Creators: name: Dimitri, Carolyn
name: Oberholtzer, Lydia
name: Dimitri, Carolyn
name: Oberholtzer, Lydia
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: Organic
subject: organic food
subject: marketing organic products
subject: organic supply chain
subject: producing organic products
subject: handling organic products
subject: organic price premiums
subject: ERS
subject: USDA

description: Organic foods now occupy prominent shelf space in the produce and dairy aisles of most mainstream U.S. food retailers. The marketing boom has pushed retail sales of organic foods up to $21.1 billion in 2008 from $3.6 billion in 1997. U.S. organic-industry growth is evident in an expanding number of retailers selling a wider variety of foods, the development of private- label product lines by many supermarkets, and the widespread introduction of new products. A broader range of consumers has been buying more varieties of organic food. Organic handlers, who purchase products from farmers and often supply them to retailers, sell more organic products to conventional retailers and club stores than ever before. Only one segment has not kept pace—organic farms have struggled at times to produce sufficient supply to keep up with the rapid growth in demand, leading to periodic shortages of organic products.
The Partition Function for the Anharmonic Oscillator in the Strong-Coupling Regime
Creators: name: Svaiter, N. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider a single anharmonic oscillator with frequency $ω$ and coupling constant $λ$ respectively, in the strong-coupling regime. We are assuming that the system is in thermal equilibrium with a reservoir at temperature $β^{-1}$. Using the strong-coupling perturbative expansion, we obtain the partition function for the oscillator in the regime $λ>>ω$, up to the order $\frac{1}{\sqrtλ}$. To obtain this result, we use of a combination of Klauder's independent-value generating functional (Acta Phys. Austr. {\bf 41}, 237 (1975)), and the generalized zeta-function method. The free energy and the mean energy, up to the order $\frac{1}{\sqrtλ}$, are also presented. We are showing that the thermodynamics quantities are nonanalytic in the coupling constant.
Food Insecurity in Households with Children: Prevalence, Severity, and Household Characteristics
Creators: name: Nord, Mark
name: Nord, Mark
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security
subject: food insecurity
subject: hunger
subject: children
subject: SNAP
subject: Supplemental Nutrition Assistance Program
subject: WIC
subject: National School Lunch Program

description: Eighty-four percent of U.S. households with children were food secure throughout 2007, meaning that they had consistent access to adequate food for active, healthy lives for all household members. Nearly 16 percent of households with children were food insecure sometime during the year, including 8.3 percent in which children were food insecure and 0.8 percent in which one or more children experienced very low food security—the most severe food-insecure condition measured by the U.S. Department of Agriculture. Numerous studies suggest that children in food-insecure households have higher risks of health and development problems than children in otherwise similar food-secure households. This study found that about 85 percent of households with food-insecure children had a working adult, including 70 percent with a full-time worker. Fewer than half of households with food-insecure children included an adult educated past high school. Thus, job opportunities and wage rates for less educated workers are important factors affecting the food security of children. In 2007, Federal food and nutrition assistance programs provided benefits to four out of five low-income, food-insecure households with children.
Additional file 1 of In silico and in vivo anti-malarial investigation on 1-(heteroaryl)-2-((5-nitroheteroaryl)methylene) hydrazine derivatives
Creators: name: Tahghighi, Azar
name: Seyed-Mahdi Mohamadi-Zarch
name: Rahimi, Hamzeh
name: Mahya Marashiyan
name: Naseh Maleki-Ravasan
name: Eslamifar, Ali
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. In vitro anti-plasmodial activity of examined synthetic compounds against CQ-sensitive (3D7) and CQ-resistant (K1) P. falciparum strains. Fig. S1. The Ligplot analysis for L-lactate dehydrogenase and ligand interactions. Ligands are shown in magenta. Green dashed lines illustrate hydrogen bonds.
A 2$\times$2 random switching model and its dual risk model
Creators: name: Behme, Anita
name: Strietzel, Philipp Lukas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K25, 94C11 (primary), 60G10, 91G05 (secondary)

description: In this article a special case of an M/G/2-queue is considered, where the two servers are exposed to two types of jobs that are distributed among the servers via a random switch. In this model the asymptotic behaviour of the workload buffer exceedance probabilities for the two single servers/ both servers together/ one (unspecified) server is determined. Hereby one has to distinguish between jobs that are either heavy-tailed or light-tailed. The results are derived via the dual risk model of the studied M/G/2-queue for which the asymptotic behaviour of different ruin probabilities is determined.
description: 34 pages, 7 figures
Generalized dual symmetry of nonabelian theories, monopoles and dyons
Creators: name: Das, C. R.
name: Laperashvili, L. V.
name: Nielsen, H. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present talk we present an investigation of nonabelian SU(N) gauge theories, describing a system of fields with non--dual g and dual \tilde g charges and revealing the generalized dual symmetry. The Zwanziger type action is suggested. The renormalization group equations for pure nonabelian theories, in particular for pure SU(3)\times\widetilde{SU(3)} gauge theory (as an example) are analysed. We consider not only monopoles, but also dyons. The behaviour of the QCD total beta--function is investigated. It was shown that this beta--function is antisymmetric under the interchange α\leftrightarrow\frac 1α(here α\equivα_s), and has zero ("fixed point") at α= 1. Monopoles, or dyons, are responsible for the phase transition. Considering critical points at α_1\approx 0.4 and α_2\approx 2.5, we give an explanation of the freezing of α_s.
description: 15 pages, 5 figures, Presented at the 12th Lomonosov Conference on Elementary Particle Physics, Moscow State University, Moscow, 25-31 August, 2005
The Enhanced Gaussian Noise Model extended to Polarization-dependent Loss
Creators: name: Serena, Paolo
name: Lasagni, Chiara
name: Bononi, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We show how to extend the enhanced Gaussian noise (EGN) model to account for polarization-dependent loss (PDL) of optical devices placed along a fiber-optic link. We provide a comprehensive theory highlighting the relationships between the time, frequency, and polarization domains in the presence of fiber nonlinear Kerr effect and amplified spontaneous emission. We double-check the new model with split-step Fourier method (SSFM) simulations showing very good accuracy. The model can be efficiently exploited to estimate low values of outage probabilities induced by PDL with computational times orders of magnitude faster than the SSFM, thus opening new opportunities in the design of optical communication links.
description: Submitted to the Journal of Lightwave Technology