cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Resonant features in the stochastic gravitational wave background
Creators: name: Fumagalli, Jacopo
name: Renaux-Petel, Sébastien
name: Witkowski, Lukas T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyse the post-inflationary contribution to the stochastic gravitational wave background due to a resonant feature in the scalar power spectrum, which is characterised by an oscillation in $\log(k)$, complementing our previous work arXiv:2012.02761 on sharp features. Primordial features signal departures of inflation from the single-field slow-roll paradigm and are motivated by embeddings of inflation in high energy physics. We find that the oscillation in the scalar power spectrum leads to a corresponding modulation in the gravitational wave spectrum that can be understood as a superposition of two oscillatory pieces, one with the original frequency of the scalar oscillations, and one with double frequency. For oscillations with slowly-varying amplitude this oscillatory part can be computed semi-analytically. Our results can be used as templates for the reconstruction of the signal from future data and permit extracting information about the small scale scalar power spectrum from measurements of the stochastic gravitational wave background.
description: 46 pages, 21 figures
Finite temperature coherence of the ideal Bose gas in an optical lattice
Creators: name: Muradyan, G. A.
name: Anglin, J. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In current experiments with cold quantum gases in periodic potentials, interference fringe contrast is typically the easiest signal in which to look for effects of non-trivial many-body dynamics. In order better to calibrate such measurements, we analyse the background effect of thermal decoherence as it occurs in the absence of dynamical interparticle interactions. We study the effect of optical lattice potentials, as experimentally applied, on the condensed fraction of a non-interacting Bose gas in local thermal equilibrium at finite temperatures. We show that the experimentally observed decrease of the condensate fraction in the presence of the lattice can be attributed, up to a threshold lattice height, purely to ideal gas thermodynamics; conversely we confirm that sharper decreases in first-order coherence observed in stronger lattices are indeed attributable to many-body physics. Our results also suggest that the fringe visibility 'kinks' observed in F.Gerbier et al., Phys. Rev. Lett. 95, 050404 (2005) may be explained in terms of the competition between increasing lattice strength and increasing mean gas density, as the gaussian profile of the red-detuned lattice lasers also increases the effective strength of the harmonic trap.
Agricultural Income and Finance Situation and Outlook: 2021 Edition
Creators: name: Dubman, Robert
name: Key, Nigel
name: Law, Jonathan
name: Litkowski, Carrie
name: Mandalay, Okkar
name: Subedi, Dipak
name: Todd, Jessica E.
name: Whitt, Christine
name: Dubman, Robert
name: Key, Nigel
name: Law, Jonathan
name: Litkowski, Carrie
name: Mandalay, Okkar
name: Subedi, Dipak
name: Todd, Jessica E.
name: Whitt, Christine
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Crop Production/Industries
subject: Farm Management
subject: Financial Economics
subject: Industrial Organization
subject: Production Economics
subject: Research Methods/ Statistical Methods
subject: farm financial performance
subject: farm income
subject: family farms
subject: farm households
subject: government payments
subject: Agricultural Resource Management Survey
subject: ARMS
subject: bankruptcy rates
subject: Market Facilitation Program
subject: ERS Farm Resource Regions
subject: U.S. Department of Agriculture
subject: USDA
subject: Economic Research Service
subject: ERS

description: The U.S. agricultural economy experienced pronounced volatility over the 2009–19 decade, including strong periods of expansion in the first part of the decade followed by several years of contraction. Although many financial indicators of well-being—including farm sector and household income—were at or near their long-term average in 2019, shifts in the distribution of Government payments from farm programs occurred. In addition, bankruptcy rates were elevated in some key agricultural States. This report describes major trends in the agricultural economy over the most recent decade for which survey data are available (2009–19) and explores drivers underlying the trends. The analysis is based on USDA’s Farm Income and Wealth Statistics data product, data collected from farm operators and farm households through the Agricultural Resource Management Survey (ARMS), and data from U.S. Bankruptcy Courts. The charts and analyses provide a historical perspective to evaluate current economic conditions.
Electrically driven linear optical isolation through phonon mediated Autler-Townes splitting
Creators: name: Sohn, Donggyu
name: Örsel, Oğulcan E.
name: Bahl, Gaurav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Optical isolators are indispensible components in nearly all photonic systems as they help ensure unidirectionality and provide crucial protection from undesirable reflections. While commercial isolators are exclusively built on magneto-optic (MO) principles they are not readily implemented within photonic integrated circuits due to the need for specialized materials. Importantly, the MO effect is generally weak, especially at shorter wavelengths. These challenges as a whole have motivated extensive research on non-MO alternatives. To date, however, no alternative technology has managed to simultaneously combine linearity (i.e. no frequency shift), linear response (i.e. input-output scaling), ultralow insertion loss, and large directional contrast on-chip. Here we demonstrate an optical isolator design that leverages the unbeatable transparency of a short, high quality dielectric waveguide, with the near-perfect attenuation from a critically-coupled absorber. Our design concept is implemented using a lithium niobate racetrack resonator in which phonon mediated Autler-Townes splitting (ATS) breaks the chiral symmetry of the resonant modes. We demonstrate on-chip optical isolators at wavelengths one octave apart near 1550 nm and 780 nm, fabricated from the same lithium niobate-on-insulator wafer. Linear optical isolation is demonstrated with simultaneously <1 dB insertion loss, >39 dB contrast, and bandwidth as wide as the optical mode that is used. Our results outperform the current best-in-class MO isolator on-chip on both insertion loss and isolator figures-of-merit, and demonstrate a lithographically defined wavelength adaptability that cannot yet be achieved with any MO isolator.
Overspinning naked singularities in AdS$_3$ spacetime
Creators: name: Briceño, Matías
name: Martínez, Cristián
name: Zanelli, Jorge
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The BTZ black hole belongs to a family of locally three-dimensional anti-de Sitter (AdS$_3$) spacetimes labeled by their mass $M$ and angular momentum $J$. The case $M \ell \geq |J|$, where $\ell$ is the anti-de Sitter radius, provides the black hole. Extending the metric to other values of of $M$ and $J$ leads to geometries with the same asymptotic behavior and global symmetries, but containing a naked singularity at the origin. The case $M \ell \leq -|J|$ corresponds to spinning conical singularities that are reasonably well understood. Here we examine the remaining case, that is $-|J|
description: 28 pages, 8 figures, 4 tables
Optical Variability of Infrared Power Law-Selected Galaxies & X-ray Sources in the GOODS-South Field
Creators: name: Klesman, Alison
name: Sarajedini, Vicki
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the use of optical variability to identify and study Active Galactic Nuclei (AGN) in the GOODS-South field. A sample of 22 mid-infrared power law sources and 102 X-ray sources with optical counterparts in the HST ACS images were selected. Each object is classified with a variability significance value related to the standard deviation of its magnitude in five epochs separated by 45-day intervals. The variability significance is compared to the optical, mid-IR, and X-ray properties of the sources. We find that 26% of all AGN candidates (either X-ray- or mid-IR-selected) are optical variables. The fraction of optical variables increases to 51% when considering sources with soft X-ray band ratios. For the mid-IR AGN candidates which have multiwavelength SEDs, we find optical variability for 64% of those classified with SEDs like Broad Line AGNs. While mostly unobscured AGN appear to have the most significant optical variability, some of the more obscured AGNs are also observed as variables. In particular, we find two mid-IR power law-selected AGN candidates without X-ray emission that display optical variability, confirming their AGN nature.
description: 11 pages, 4 figures, 1 table, accepted for publication in ApJ
Evidence of two distinct charge carriers in underdoped high Tc cuprates
Creators: name: Sanna, S.
name: Coneri, F.
name: Rigoldi, A.
name: Concas, G.
name: De Renzi, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present results on heavily underdoped Y_1-xCa_xBa_2Cu_3O_6+y which provide the evidence that the doping mechanism (cation substitution or oxygen loading) directly determines whether the corresponding injected mobile holes contribute to superconductivity or only to the normal metallic properties. We argue that this hole tagging calls for a subtler description of the correlated bands than the usual one. We also map in great detail the underdoped superconducting phase diagram T_c vs. hole doping which shows that the number of mobile holes is not the critical parameter for the superconductivity.
description: 4 pages, 4 figures
Circuit Quantum Electrodynamics in Hyperbolic Space: From Photon Bound States to Frustrated Spin Models
Creators: name: Bienias, Przemyslaw
name: Boettcher, Igor
name: Belyansky, Ron
name: Kollar, Alicia J.
name: Gorshkov, Alexey V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Circuit quantum electrodynamics is one of the most promising platforms for efficient quantum simulation and computation. In recent groundbreaking experiments, the immense flexibility of superconducting microwave resonators was utilized to realize hyperbolic lattices that emulate quantum physics in negatively curved space. Here we investigate experimentally feasible settings in which a few superconducting qubits are coupled to a bath of photons evolving on the hyperbolic lattice. We compare our numerical results for finite lattices with analytical results for continuous hyperbolic space on the Poincaré disk. We find good agreement between the two descriptions in the long-wavelength regime. We show that photon-qubit bound states have a curvature-limited size. We propose to use a qubit as a local probe of the hyperbolic bath, for example by measuring the relaxation dynamics of the qubit. We find that, although the boundary effects strongly impact the photonic density of states, the spectral density is well described by the continuum theory. We show that interactions between qubits are mediated by photons propagating along geodesics. We demonstrate that the photonic bath can give rise to geometrically-frustrated hyperbolic quantum spin models with finite-range or exponentially-decaying interaction.
Stein--Sahi complementary series and their degenerations
Creators: name: Neretin, Yuri A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 22E46, 53C35, 32M15

description: The aim of the paper is an introduction to Stein--Sahi complementary series, holomorphic series, and 'unipotent representations'. We also discuss some open problems related to these objects. For the sake of simplicity, we consider only the groups U(n,n).
description: 40pp, 7fig, revised version
Three microlensing planets with no caustic-crossing features
Creators: name: Han, Cheongho
name: Udalski, Andrzej
name: Kim, Doeon
name: Lee, Chung-Uk
name: Albrow, Michael D.
name: Chung, Sun-Ju
name: Gould, Andrew
name: Hwang, Kyu-Ha
name: Jung, Youn Kil
name: Ryu, Yoon-Hyun
name: Shin, In-Gu
name: Shvartzvald, Yossi
name: Yee, Jennifer C.
name: Zang, Weicheng
name: Cha, Sang-Mok
name: Kim, Dong-Jin
name: Kim, Hyoun-Woo
name: Kim, Seung-Lee
name: Lee, Dong-Joo
name: Lee, Yongseok
name: Park, Byeong-Gon
name: Pogge, Richard W.
name: Mróz, Przemek
name: Szymański, Michał K.
name: Skowron, Jan
name: Poleski, Radosław
name: Soszyński, Igor
name: Pietrukowicz, Paweł
name: Kozłowski, Szymon
name: Ulaczyk, Krzysztof
name: Rybicki, Krzysztof A.
name: Iwanek, Patryk
name: Wrona, Marcin
name: Gromadzki, Mariusz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We search for microlensing planets with signals exhibiting no caustic-crossing features, considering the possibility that such signals may be missed due to their weak and featureless nature. For this purpose, we reexamine the lensing events found by the KMTNet survey before the 2019 season. From this investigation, we find two new planetary lensing events, KMT-2018-BLG-1976 and KMT-2018-BLG-1996. We also present the analysis of the planetary event OGLE-2019-BLG-0954, for which the planetary signal was known, but no detailed analysis has been presented before. We identify the genuineness of the planetary signals by checking various interpretations that can generate short-term anomalies in lensing light curves. From Bayesian analyses conducted with the constraint from available observables, we find that the host and planet masses are $(M_1, M_2)\sim (0.65~M_\odot, 2~M_{\rm J})$ for KMT-2018-BLG-1976L, $\sim (0.69~M_\odot, 1~M_{\rm J})$ for KMT-2018-BLG-1996L, and $\sim (0.80~M_\odot, 14~M_{\rm J})$ for OGLE-2019-BLG-0954L. The estimated distance to OGLE-2019-BLG-0954L, $3.63^{+1.22}_{-1.64}$~kpc, indicates that it is located in the disk, and the brightness expected from the mass and distance matches well the brightness of the blend, indicating that the lens accounts for most of the blended flux. The lens of OGLE-2019-BLG-0954 could be resolved from the source by conducting high-resolution follow-up observations in and after 2024.
description: 11 pages, 14 figures
Estrazione, caratterizzazione ed attività biologica di metaboliti da piante appartenenti alla famiglia delle Lamiaceae
Creators: name: Grassia, Armando
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: La mia tesi di dottorato riguarda lo studio fitochimico e l’analisi dell’attività biologica di alcune piante appartenenti alla famiglia delle Lamiaceae. Le Lamiaceae sono rappresentate da circa 3200 specie, diffuse in tutte le parti del mondo, ma particolarmente nella regione mediterranea che rappresenta il principale centro di differenziazione della famiglia.
Il primo campione preso in esame e studiato in modo più approfondito era costituito dalle parti aeree di Marrubium globosum ssp. libanoticum proveniente dal Libano. I suoi componenti che si presentavano in miscele complesse di natura chimica assai diversificata hanno richiesto differenti metodiche estrattive.
Dall’estratto acetonico sono stati isolati e caratterizzati cinque nuovi diterpeni naturali appartenenti alla classe dei labdani ed altri due composti già noti. In alcuni casi, poiché tali molecole si presentavano in miscela, è stato necessario operare delle trasformazioni chimiche per separarle e procedere all’indagine strutturale. L’estratto acetonico è stato testato in un modello di infiammazione in vivo, l’edema da carragenina nella zampa di ratto, dimostrando buona attività antiinfimmatoria. Tale attività è stata correlata all’inibizione dell’espressione di iNOS e COX-2 e sembra principalmente dovuta al composto maggioritario, il marrulibanoside, isolato dalla frazione più attiva dell’estratto.
Dall’estratto metanolico è stata isolata e caratterizzata, per la prima volta nel genere Marrubium, la naringenina 7-O-β-D-glucoside, un flavonone, ed altre dieci molecole mai isolate precedentemente in questa specie. Contrariamente alle specie finora studiate, in cui prevalgono i flavoni rispetto ai flavonoli, questo lavoro ha mostrato una completa dominanza in Marrubium globosum di flavonoli, Questi flavonoidi sono presenti esclusivamente in forma glicosilata, e ciò rappresenta un’ulteriore caratteristica che contraddistingue questa specie.
Infine una piccola porzione di matrice vegetale è stata sottoposta ad un processo di idrodistillazione per ottenere l’olio essenziale di M. globosum ssp. libanoticum, di cui è stata studiata la composizione chimica e l’attività antibatterica su batteri sia di tipo Gram – sia Gram +. Tali dati, confrontati con quelli relativi ad un’altra specie il Marrubium cuneatum, hanno rivelato che l’olio essenziale del primo è più attivo su tutti i ceppi batterici testati. Dalle altre Lamiaceae: Mentha piperita, Ocimum basilicum, Rosmarinus officinalis, Salvia officinalis, Thymus pulegioides è stato estratto ed analizzato l’olio essenziale di cui è stata anche saggiata l’attività antibatterica, che si è rilevata elevata soprattutto per quanto riguarda Timo e Rosmarino.
The interactional organisation of talk in naturopathic interviews
Creators: name: Cirillo, Letizia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: Negli ultimi trent’anni si è assistito a un proliferare di studi sul parlato in contesti istituzionali. Tra questi va annoverato l’ambito clinico, all’interno del quale particolare interesse ha suscitato l’interazione medico-paziente.

Tradizionalmente il colloquio medico-paziente è stato concepito come un evento comunicativo rigidamente strutturato controllato dal medico, nel quale poco o nessuno spazio viene concesso alle iniziative del paziente. Tale visione, tuttavia, sembra dipendere dalla tendenza, piuttosto diffusa, a considerare le strategie comunicative dei medici tralasciando quelle dei pazienti.

Diversamente da questa tendenza, il presente studio esamina sistematicamente le iniziative del paziente nell’arco del colloquio con il  medico, e le confronta con le risposte di quest’ultimo dimostrando come il paziente contribuisca attivamente a strutturare il discorso. A tal fine vengono analizzati nove colloqui, tra studenti di medicina naturopatica e pazienti ambulatoriali, registrati presso il Naturopathic Medical Center dell’Università di Bridgeport (CT, USA) e trascritti secondo le convenzioni dell’analisi della conversazione.

Un esame attento dei colloqui rivela come i ruoli e le attività dei partecipanti nelle varie fasi degli stessi siano interazionalmente stabiliti. Tale lavoro congiunto, che vede i medici mostrarsi empatici nei confronti delle preoccupazioni espresse dai pazienti, e i pazienti possedere una specifica conoscenza procedurale del colloquio, consente un’alternanza di “voci” in virtù della quale si realizza un delicato equilibrio tra le priorità del paziente e l’agenda medica.
Infrared Gluon and Ghost Propagator Exponents From Lattice QCD
Creators: name: Oliveira, O.
name: Silva, P. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The compatibility of the pure power law infrared solution of QCD and lattice data for the gluon and ghost propagators in Landau gauge is discussed. For the gluon propagator, the lattice data is well described by a pure power law with an infrared exponent $κ\sim 0.53$, in the Dyson-Schwinger notation. $κ$ is measured using a technique that suppresses finite volume effects. This value implies a vanishing zero momentum gluon propagator, in agreement with the Gribov-Zwanziger confinement scenario. For the ghost propagator, the lattice data seem not to follow a pure power law, at least for the range of momenta accessed in our simulation.
description: Substantial rewriting with new material included. The new version includes a new and more deep discussion of the finite volume and asymmetry effects
I ministri di culto nell'Ordinamento Italiano
Creators: name: Ciotola, Claudia
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: La tesi, dedicata ai ministri di culto nell’ordinamento italiano, è incentrata su due aspetti essenziali della materia. Il primo è relativo ai problemi di identificazione della categoria che, prospettatisi in conseguenza dello sviluppo della società italiana in senso multietnico e pluriconfessionale, costituiscono gli aspetti attualmente più controversi della disciplina. Il secondo riguarda, invece, la posizione dei ministri di culto nell’ordinamento italiano. In riferimento ad esso, l’analisi svolta è stata orientata a verificare la compatibilità della normativa vigente con i principi costituzionali e a tentare una ricostruzione unitaria della categoria, sul piano concettuale, in ragione della dimensione funzionale.
Ground-state properties of interacting two-component Bose gases in a one-dimensional harmonic trap
Creators: name: Hao, Yajiang
name: Chen, Shu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study ground-state properties of interacting two-component boson gases in a one-dimensional harmonic trap by using the exact numerical diagonalization method. Based on numerical solutions of many-body Hamiltonians, we calculate the ground-state density distributions in the whole interaction regime for different atomic number ratio, intra- and inter-atomic interactions. For the case with equal intra- and inter-atomic interactions, our results clearly display the evolution of density distributions from a Bose condensate distribution to a Fermi-like distribution with the increase of the repulsive interaction. Particularly, we compare our result in the strong interaction regime to the exact result in the infinitely repulsive limit which can be obtained by a generalized Bose-Fermi mapping. We also discuss the general case with different intra- and inter-atomic interactions and show the rich configurations of the density profiles.
description: 6 pages, 5 figures, references added
Bar quenching: Evidence from star-formation-rate indicators
Creators: name: George, Koshy
name: Subramanian, Smitha
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The central regions of star-forming barred spiral galaxies can be devoid of star formation because of the redistribution of gas along the length of the bar. However, there can be gas outside the length of the bar that can host star formation. We study a sample of barred disc galaxies in the local Universe with an aim to discriminate between centrally quenched and globally quenched galaxies based on their positions on star-formation-rate(SFR)--stellar mass plots and to find a connection between the SFR of quenched galaxies and the length of their bar. We classified barred galaxies as centrally quenched and globally quenched based on their position on SFR--stellar mass plots, with SFRs derived from H$α$ flux and spectral energy distribution fits on combined ultraviolet and optical flux. We selected galaxies as passive based on the distance from the main sequence relation. From a total 2514 barred galaxies studied here, we present 651 with suppressed star formation in their central region but hosting star formation outside. We also find a possible correlation between bar length and SFR for the galaxies that are fully quenched because of the stellar bar.
description: Accepted for publication in A&A
Para além da cerca branca: a mulher no subúrbio estadunidense em duas obras distópicas de ficção
Creators: name: Faria, Paula Lemos Vilaça
Publisher: name: Labfront/UEMG
Year: 2023

description: Este artigo tem como objetivo fazer aproximações entre as narrativas de duas obras ficcionais, o livro O coração é o último a morrer (2015), da escritora canadense Margaret Atwood, e o filme Não se preocupe, querida (2022), dirigido por Olivia Wilde e com roteiro de Katie Silberman. Ambas possuem como cenário a espacialidade dos subúrbios dos EUA na década de 1950, e discutem algumas questões de gênero. O trabalho se propõe a fazer um breve panorama dos dois objetos e analisa como essas discussões se dão nessas obras juntamente com a reflexão sobre o modo de vida da sociedade capitalista e sua espetacularização de acordo com a época escolhida para as narrativas se enquadrarem e o contexto contemporâneo em que foram publicadas. Assim, são apontadas algumas questões que permeiam uma espécie de crise de representação de um imaginário comumente representado em histórias distópicas de ficção.
Ipsos Understanding Society: Wave 14 August 2021
Creators: name: Ipsos Public Affairs
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Changes in extreme weather events over the last ten years (10); changes in air pollution/air quality in the last ten years (1); how many hours of television do you watch per week (1); favor/oppose drafting women (1); watched or followed events from the Olympics in Tokyo (3); methods of relaxation/self-care (1).
A gradient-directed Monte Carlo approach to molecular design
Creators: name: Hu, Xiangqian
name: Beratan, David N.
name: Yang, Weitao
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The recently developed linear combination of atomic potentials (LCAP) approach [M.Wang et al., J. Am. Chem. Soc., 128, 3228 (2006)] allows continuous optimization in discrete chemical space and thus is quite useful in the design of molecules for targeted properties. To address further challenges arising from the rugged, continuous property surfaces in the LCAP approach, we develop a gradient-directed Monte Carlo (GDMC) strategy as an augmentation to the original LCAP optimization method. The GDMC method retains the power of exploring molecular space by utilizing local gradient information computed from the LCAP approach to jump between discrete molecular structures. It also allows random Monte Carlo moves to overcome barriers between local optima on property surfaces. The combined GDMC and LCAP approach is demonstrated here for optimizing nonlinear optical (NLO) properties in a class of donor-acceptor substituted benzene and porphyrin frameworks. Specifically, one molecule with four nitrogen atoms in the porphyrin ring was found to have a larger first hyperpolarizability than structures with the conventional porphyrin motif. 1
description: 26 pages, 10 figures
Updating Economic Burden of Foodborne Diseases Estimates for Inflation and Income Growth
Creators: name: Hoffmann, Sandra
name: Ahn, Jae-Wan
name: Hoffmann, Sandra
name: Ahn, Jae-Wan
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Consumer/Household Economics
subject: Financial Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Health Economics and Policy
subject: Public Economics
subject: Research Methods/ Statistical Methods
subject: foodborne illness
subject: pathogen
subject: inflation
subject: cost of illness
subject: economic burden

description: This report updates the USDA, Economic Research Service’s (ERS) 2013 estimates of the economic burden for the 15 leading foodborne pathogens for inflation and income growth to 2018. USDA, ERS estimates of the economic burden of foodborne diseases include the costs of medical care, the value of lost productivity due to illness-induced absences from jobs, and the economic burden of premature deaths from foodborne illness. These estimates reflect the impact on consumers, not producers. Inflation and income growth result in a higher economic burden of foodborne illness, even holding constant disease incidence and health care use. We found that in 2018 dollars, the economic burden of these pathogens was $17.6 billion, an increase of about $2 billion, or 13 percent, over the 2013 USDA, ERS estimate of $15.5 billion for the same 15 pathogens. Overall inflation from 2013 to 2018 was 7.8 percent, and real per capita gross domestic product (GDP) growth was 8.8 percent. This means the value of preventing these foodborne illnesses increased by about 5 percentage points more than overall inflation and 4 percentage points more than income over the 5-year period. This paper also explores the role of price inflation and income growth in driving changes in the economic burden of these illnesses.
The infrared electronic spectrum of FeO
Creators: name: Taylor, Alan William
Publisher: name: University of British Columbia
Year: 2010

description: The near-infrared electronic system of FeO has been recorded in emission at high resolution with the 1-meter FT spectrometer at Kitt Peak National Observatory. The system has been found to consist of two overlapping band systems lying in the region 7 000 - 14 000 cm⁻¹. These share a common lower state and this is the same lower state as that of the orange system. This state, which has vibrational constants (in cm⁻¹) ω[sub e] = 880.4148, ω[sub e]x[sub e] = 4.632 15, and ω[sub e]y[sub e] = 5.55 x 10⁻⁴ has been established as the ground state of the molecule by the matrix isolation experiments of Green, Reedy, and Kay (J. Mol. Spectrosc. 1979, 78, 257-266) and has been identified as a⁵Δ[sub i] state in earlier studies done in this laboratory on the orange system. The present work has proven this identity, and least-squares data reduction has yielded the ground state constants: B[sub e] = 0.518 721 cm⁻¹, α [sub e] = 0.003 825 cm⁻¹, τ [sub e] = -4.8x10⁻⁷ cm⁻¹, D[sub e] = 7.210 x 10⁻⁷ cm⁻¹, β[sub e] = 1.51 x 10⁻⁹ cm⁻¹, r[sub e] = 0.161 64 nm, and A = -94.9 cm⁻¹. These were based on combined data from the infrared and orange systems for the levels v = 0-3, together with six microwave frequencies obtained by Endo. Saito, and Hirota (Ap. J. 1984, 278, L131-L132). Both the ⁵Δ₀ and ⁵Δ₁, substates are found to show small A-doublings, with that in ⁵Δ₀ being the larger (~0.3 cm⁻¹). In contrast to all the known excited states of FeO, the ground state is well-behaved, but even this state possesses one small rotational perturbation. This is observed only in one parity component of the J = 15 level of the v = 2 level of the X⁵Δ₂ substate and is probably caused by the low-lying ⁷Σ state predicted by Krauss and Stevens (J. Chem. Phys. 1985, 82, 5584-5596). The upper level of the infrared system consists of two overlapping states about 10 200 cm⁻¹ above the ground state and separated by only about 213 cm⁻¹ at their v = 0 levels. The upper of these, a ⁵π[sub i] state, has the approximate values Δ G[sub ½] ≃ 627 cm⁻¹ and A[sub O] ≃ -217 cm⁻¹ and for the lower ⁵Φ[sub i] state Δ G[sub ½] ≃ 593 cm⁻¹ and A[sub O] ≃ -47 cm⁻¹. These are very rough estimates only, as a result of the vast number of rotational perturbations present. Effective rotational constants for the individual substates have been determined rather than a global set of constants, again because of the perturbations. Amongst the perturbing states, at least one multiple Σ state is present and there may be as many as three. Evidence is also presented for the existence of a ³Φ state.
Aerofotogrametria como auxiliar na inspeção e identificação de danos em edifícios históricos
Creators: name: Souza, Luiz Antônio Cruz
name: Gonçalves, Willi de Barros
name: Hardy, Tiago de Castro
Publisher: name: Labfront/UEMG
Year: 2023

description:  

Este artigo discute a utilização de Aeronaves Remotamente Pilotadas (Remotely Piloted Aircraft -RPA), como auxiliar para inspeção e identificação de danos em edifícios históricos, utilizando técnicas de aerofotogrametria e modelagem digital. O estudo de caso é a inspeção das coberturas das capelas do Santuário de Bom Jesus de Matosinhos, em Congonhas/MG. Apresenta-se o planejamento do voo considerando questões como estabilidade e a segurança da operação. O método envolveu o processamento de imagens em programa específico de aerofotogrametria e os resultados apresentados tratam da identificação de danos nas coberturas e modelamento tridimensional digital do Santuário. O artigo conclui que o uso de RPAs, possibilita inspeções em lugares de difícil acesso, e que a aerofotogrametria associada com outros métodos como por exemplo utilização de escâner a laser, podem viabilizar levantamentos de construções de interesse cultural de forma precisa, de baixo custo e mais rápida.
Heating of inhomogeneous electron flow in the hydrodynamic regime
Creators: name: Zhang, Gu
name: Kachorovskii, Valentin
name: Tikhonov, Konstantin
name: Gornyi, Igor
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the electron temperature profiles for an inhomogeneous electron flow in the hydrodynamic regime. We assume that the inhomogeneity is due to a weakly non-uniform distribution of the momentum relaxation time within a spherically constricted area. We show that the temperature profile dramatically depends on the drive strength and the viscosity of the electron liquid. In the absence of viscosity, a Landauer-dipole-like temperature distribution, asymmetrically deformed along the current by the inelastic electron-phonon scattering, emerges around the inhomogeneity. We find that both the Landauer-dipole temperature profile and its asymmetry in the direction of the driving electric field exist in all dimensionalities and are, therefore, universal features of inhomogeneous hydrodynamic electron flow. We further demonstrate that the electron viscosity suppresses the thermal Landauer dipole and leads to the appearance of a "hot spot" exactly at the center of the constriction. We also calculate the phonon temperature distribution, which can be directly measured in experiments on thermal nanoimaging.
description: 12 pages, 10 figures
Improved Analysis of Kannan's Shortest Lattice Vector Algorithm
Creators: name: Hanrot, Guillaume
name: Stehlé, Damien
Publisher: name: arXiv
Year: 2007
Subjects: subject: Cryptography and Security (cs.CR)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: The security of lattice-based cryptosystems such as NTRU, GGH and Ajtai-Dwork essentially relies upon the intractability of computing a shortest non-zero lattice vector and a closest lattice vector to a given target vector in high dimensions. The best algorithms for these tasks are due to Kannan, and, though remarkably simple, their complexity estimates have not been improved since more than twenty years. Kannan's algorithm for solving the shortest vector problem is in particular crucial in Schnorr's celebrated block reduction algorithm, on which are based the best known attacks against the lattice-based encryption schemes mentioned above. Understanding precisely Kannan's algorithm is of prime importance for providing meaningful key-sizes. In this paper we improve the complexity analyses of Kannan's algorithms and discuss the possibility of improving the underlying enumeration strategy.
Shopify Server Side Tagging
Creators: name: Solverhood
Publisher: name: Zenodo
Year: 2021
Subjects: shopify
server side
tagging
shopify server side tagging

description: Learn how to get your own server side container up and running with Google Tag Manager and Shopify. Server-Side-Tagging setup on Shopify is a complex, technical, and delicate process. It also requires data validation and maintenance. We have prepared this guide for Shopify merchants to understand what server-side tagging is, whether it is a good fit for them, and what they should do as next steps. Shopify Server-Side Tagging is a data collection and processing method that we will be talking a lot about in the upcoming years. Besides, it will probably be the main way of data-processing. What is Server-Side Tagging Server-side tagging has actually been around since the beginning of web analytics and is not a new concept. However, we’ve been hearing more and more about it after user privacy and cookie restrictions became a major concern, especially with Apple’s iOS14 updates. Client-Side Tracking vs. Server-Side Tracking Client-Side Tracking is the typical tracking method that almost all websites currently use. Almost every action takes place in the visitor’s browser. When a visitor visits our websites, Google Tag Manager (if installed) runs through the browser (e.g. Google Chrome or Safari), reads the data layers (if installed), and sends requests to 3rd parties along with the related data attached to it. Why Use Server Side Tagging for Shopify Stores Most Shopify stores rely on Facebook and Instagram as their primary marketing channel and source of revenue. Also, remarketing/retargeting campaigns are often the best performing because you’re targeting visitors who have already interacted with your Shopify store before, perhaps even purchased a product. How to Setup Server-Side Tagging for Shopify Stores Server-Side-Tagging setup on Shopify is a complex, technical, and delicate process. It also requires data validation and maintenance. There are several methods to achieve the result. We highly recommend using YOUR OWN Google Cloud Server. https://analyzify.app/server-side-tagging-shopify
Near BPS Wilson Loop in beta-deformed Theories
Creators: name: Chu, Chong-Sun
name: Giataganas, Dimitrios
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a definition of the Wilson loop operator in the N=1 beta-deformed supersymmetric Yang-Mills theory. Although the operator is not BPS, it has a finite expectation value at least up to order (g^2 N)^2. This does not happen generally for a generic non-BPS Wilson loop whose expectation value is UV divergent. For this reason we call this a near-BPS Wilson loop and conjecture that its exact expectation value is finite. We derive the general form of the boundary condition satisfied by the dual string worldsheet and find that it is deformed. Finiteness of the expectation value of the Wilson loop, together with some rather remarkable properties of the Lunin-Maldacena metric and the B-field, fixes the boundary condition to be one which is characterized by the vielbein of the deformed supergravity metric. The Wilson loop operators provide natural candidates as dual descriptions to some of the existing D-brane configurations in the Lunin-Maldacena background. We also construct the string dual configuration for a near-1/4 BPS circular Wilson loop operator. The string lies on a deformed three-sphere instead of a two-sphere as in the undeformed case. The expectation value of the Wilson loop operator is computed using the AdS/CFT correspondence and is found to be independent of the deformation. We conjecture that the exact expectation value of the Wilson loop is given by the same matrix model as in the undeformed case.
description: LaTeX. v2: corrections and comments added (22 pages). v3: proof of the finitness of the vev of the Wilson loop is extended to the next to leading order. appendices C and D added. version to appear in JHEP (23 pages)
Apodization of absorption and magnitude mode fourier transform spectra and the effects on SNR and resolution
Creators: name: Lee, Judy Pihsien
Publisher: name: University of British Columbia
Year: 2010

description: The problem of sidelobes surrounding a peak in a Fourier transform spectrum is alleviated by apodization. This is performed by multiplying the time-domain function by a window function. A systematic study of the effects of window functions on damped time-domain signals is made by examining the resulting lineshapes at specific dynamic ranges for both the absorption and magnitude modes. A symmetrical window is shown to be effective for the magnitude mode, and half of the symmetrical shape is better for the absorption mode. Selection of a recommended window is based on the required dynamic range. For an increasing dynamic range, the Noest-Kort and Norton-Beer F3, Filler E0.20, and Kaiser-Bessel are efficient for the absorption mode; and the Hamming, 3-term Blackman-Harris and Kaiser-Bessel work for the magnitude mode. Sidelobes are often eliminated at the expense of SNR and/or resolution, therefore these factors are also examined. All of the recommended windows show sufficient SNRs except for the Noest-Kort. The apodized absorption spectra are well resolved, with a 10% valley as the criterion for resolution. The magnitude spectra do not display a simple pattern, and also show a phase dependence; however these are explained by the absorption and dispersion components. These findings lend themselves to various applications.
PMIPv6 Integrated with MIH for Flow Mobility Management: a Real Testbed with Simultaneous Multi-Access in Heterogeneous Mobile Networks
Creators: name: Alves, Hugo
name: Silva, Luis
name: Marinheiro, Rui
name: Moura, Jose
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The exponential growth of the number of multihomed mobile devices is changing the way how we can connect to the Internet. Our mobile devices are demanding for more network resources, in terms of traffic volume and QoS requirements. Unfortunately, it is very hard to a multihomed device to be simultaneously connected to the network through multiple links. The current work enhances the network access of multihomed devices agnostically to the deployed access technologies. This enhancement is achieved by using simultaneously all of the mobile devices interfaces, and by routing each individual data flow through the most convenient access technology. The proposed solution is only deployed at the network side and it extends Proxy Mobile IPv6 with flow mobility in a completely transparent way to mobile nodes. In fact, it gives particular attention to the handover mechanisms, by improving the detection and attachment of nodes in the network, with the inclusion of the IEEE 802.21 standard in the solution. This provides the necessary implementation and integration details to extend a network topology with femtocell devices. Each femtocell is equipped with various network interfaces supporting a diverse set of access technologies. There is also a decision entity that manages individually each data flow according to its QoS / QoE requisites. The proposed solution has been developed and extensively tested with a real prototype. Evaluation results evidence that the overhead for using the solution is negligible as compared to the offered advantages such as: the support of flow mobility, the fulfil of VoIP functional requisites, the session continuity in spite of flows mobility, its low overhead, its high scalability, and the complete transparency of the proposed solution to the user terminals.
description: Accepted in Wireless Personal Communications
Structural, magnetic and mechanical properties of 5 $μ$m thick SmCo films for use in Micro-Electro-Mechanical-Systems
Creators: name: Walther, Arnaud
name: Khlopkov, Kirill
name: Gutfleisch, Oliver
name: Givord, Dominique
name: Dempsey, N. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: 5$μ$m thick SmCo films were deposited onto Si substrates using triode sputtering. A study of the influence of deposition temperature (Tdep <= 600 degrees C) on the structural, magnetic and mechanical properties has shown that optimum properties (highest degree of in-plane texture, maximum in-plane coercivity and remanence (1.3 and 0.8 T, respectively), no film peel-off) are achieved for films deposited at the relatively low temperature of 350 degrees C. This temperature is compatible with film integration into Micro-Electro-Mechanical-Systems (MEMS). The deposition rate was increased from 3.6 to 18 $μ$m/h by increasing the surface area of the target from 7 to 81 cm2. Mechanically stable films could be prepared by deposition onto pre-patterned films or deposition through holes in a mask.
แอฟฟินิตีไบโอเซนเซอร์แบบไม่ติดฉลากสาหรับไวรัสตัวแดงดวงขาว (Label-free Affinity Biosensor for White Spot Syndrome Virus)
Creators: name: ธันยาภรณ์ ไวยโภคา
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: white spot syndrome virus (WSSV), affinity biosensor, i mmunosensor, shrimp, impedance

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
A note on dark energy induced by D-brane motion
Creators: name: Chingangbam, R.
name: Deshamukhya, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this note we study the possibility of obtaining dark energy solution in a D-brane scenario in a warped background that includes brane-position dependent corrections for the non-perturbative superpotential. The volume modulus is stabilized at instantaneous minima of the potential. Though the model can account for the existence of dark energy within present observational bound - fine-tuning of the model parameters becomes unavoidable. Moreover, the model does not posses a tracker solution.
description: 5 pages, 4 figures
Analysis of changes in worldwide routine immunisation coverage in 2020
Creators: name: Evans, Beth
name: Jombart, Thibaut
Publisher: name: Zenodo
Year: 2021
Subjects: reportfactory
R
epidemics
COVID-19

description: This code release provides an infrastructure for reproducible analysis of worldwide routine immunisation coverage in 2020, as presented in Evans & Jombart (2021). The corresponding github repository can be found at:
 https://github.com/bevans249/modelling_covid_impact_RI