cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Speed and entropy of an interacting continuous time quantum walk
Creators: name: de Falco, Diego
name: Tamascelli, Dario
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present some dynamic and entropic considerations about the evolution of a continuous time quantum walk implementing the clock of an autonomous machine. On a simple model, we study in quite explicit terms the Lindblad evolution of the clocked subsystem, relating the evolution of its entropy to the spreading of the wave packet of the clock. We explore possible ways of reducing the generation of entropy in the clocked subsystem, as it amounts to a deficit in the probability of finding the target state of the computation. We are thus lead to examine the benefits of abandoning some classical prejudice about how a clocking mechanism should operate.
description: 25 pages, 14 figures
Synthetic dimension-induced conical intersections in Rydberg molecules
Creators: name: Hummel, Frederic
name: Eiles, Matthew T.
name: Schmelcher, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We observe a series of conical intersections in the potential energy curves governing both the collision between a Rydberg atom and a ground-state atom and the structure of Rydberg molecules. By employing the electronic energy of the Rydberg atom as a synthetic dimension we circumvent the von Neumann-Wigner theorem. These conical intersections can occur when the Rydberg atom's quantum defect is similar in size to the electron--ground-state atom scattering phase shift divided by $π$, a condition satisfied in several commonly studied atomic species. The conical intersections have an observable consequence in the rate of ultracold $l$-changing collisions of the type Rb$(nf)$+Rb$(5s)\to$ Rb$(nl>3)$+Rb$(5s)$. In the vicinity of a conical intersection, this rate is strongly suppressed, and the Rydberg atom becomes nearly transparent to the ground-state atom.
description: 5 pages, 3 figures
ОДАМ МУСКУЛЛАРИ ТАСВИРИНИ ИШЛАШДА ГИПС МОДЕЛНИНГ АҲАМИЯТИ
Creators: name: Ботиршер Ғуломович Жаббаров
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Одам қомати
анатомик тузилиш
тана тузилиши
мускуллар
елка мускуллари
кўкрак мускуллари
мушак толалари
пай
кўкрак қафаси
умуртқа поғонаси
курак ва курак ости мускуллари
Жан-Антуан Гудон
Экорше
ҳайкалтарошлик
қаламтасвир

description: Ушбу мақолада олий ўқув юртларининг санъатга ихтисослашган таълим йўналишлари талабаларини узоқ муддатли академик қаламтасвир машғулотлари жараѐнида одам мускуллари тасвирини ишлаш жараѐнида йўл қўядиган камчиликларини бартараф қилиш масаласи ўрганиб чиқилган
3D-xy critical properties of YBa2Cu4O8 and magnetic field induced 3D to 1D crossover
Creators: name: Weyeneth, S.
name: Schneider, T.
name: Bukowski, Z.
name: Karpinski, J.
name: Keller, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present reversible magnetization data of a YBa2Cu4O8 single crystal and analyze the evidence for 3D-xy critical behavior and a magnetic field induced 3D to 1D crossover. Remarkable consistency with these phenomena is observed in agreement with a magnetic field induced finite size effect, whereupon the correlation length transverse to the applied magnetic field cannot grow beyond the limiting magnetic length scale L_H. By applying the appropriate scaling form we obtain the zero-field critical temperature, the 3D to 1D crossover, the vortex melting line and the universal ratios of the related scaling variables. Accordingly there is no continuous phase transition in the (H,T)-plane along the H_c2-lines as predicted by the mean-field treatment.
description: 8 pages, 4 figures
The Impact of Orography on the African Easterly Wave Stormtrack
Creators: name: White, Joshua D.
name: Aiyyer, Anantha
name: Russell, James O. H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geophysics (physics.geo-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We examined the sensitivity of African easterly waves (AEWs) to elevated terrain over North Africa using a numerical weather prediction model. We formed five ensembles of simulated AEW activity with orographic features independently reduced in four key regions. The ensemble members consisted of 10 consecutive AEW seasons simulated separately. From the ensembles, the southern AEW stormtrack was most sensitive to the reduction of the Ethiopian highlands. Energy budgets showed that diminished diabatic heating associated with precipitating convection was the likely driver of the weaker AEWs. Baroclinic overturning was the dominant pathway for this response. The northern AEW stormtrack was most sensitive to the reduction of the Hoggar and Tibesti mountains. In this case, a reduction in the vertical shear and diminished baroclinic energy conversions from the background state was associated with weaker AEWs. Through terrain reduction, our results provide a view of thermodynamic and dynamic feedback in AEWs that is complementary to what has been shown in past studies.
Syntactic elicitation, morphological elicitation, and picture task
Creators: name: CPM
name: DHP
name: Baclawski, Kenneth
name: Sikhara (Đàng Thanh Quốc Thuận)
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: cjm

description: Picture task: Using cards from the board game Dixit to elicit question-answer pairs. Syntactic/morphological elicitation: Causatives, D-linking, reduplication, elaborate expressions, object shift, aggressively non-D-linking.
Some Aspects of the Tachyon Inflation with Superpotential in Confrontation with Planck2018 Data
Creators: name: Rashidi, Narges
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the tachyon inflation in the presence of the superpotential as an inflationary potential. We study the primordial perturbations and their non-gaussian feature in the equilateral configuration. We use the Planck2018 TT, TE, EE+lowE+lensing+BK14+BAO joint data at $68\%$ CL and $95\%$ CL, to perform numerical analysis on the scalar perturbations and seek for the observational viability of the tachyon inflation with superpotential. We also check the observational viability of the model by studying the tensor part of the perturbations and comparing the results with Planck2018 TT, TE, EE+lowE+lensing+BK14+BAO+ LIGO$\&$Virgo2016 joint data at $68\%$ CL and $95\%$ CL. By studying the phase space of the model's parameters, we predict the amplitude of the equilateral non-gaussianity in this model. The reheating phase after inflation is another issue that is explored in this paper. We show that, in some ranges of the model's parameters, it is possible to have an observationally viable tachyon model with superpotential.
description: 25 pages, 8 figures, 5 tables
Astronomical Data Management
Creators: name: Norris, Ray
name: Andernach, Heinz
name: Eichhorn, Guenther
name: Genova, Francoise
name: Griffin, Elizabeth
name: Hanisch, Robert
name: Kembhavi, Ajit
name: Kennicutt, Robert
name: Richards, Anita
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a summary of the major contributions to the Special Session on Data Management held at the IAU General Assembly in Prague in 2006. While recent years have seen enormous improvements in access to astronomical data, and the Virtual Observatory aims to provide astronomers with seamless access to on-line resources, more attention needs to be paid to ensuring the quality and completeness of those resources. For example, data produced by telescopes are not always made available to the astronomical community, and new instruments are sometimes designed and built with insufficient planning for data management, while older but valuable legacy data often remain undigitised. Data and results published in journals do not always appear in the data centres, and astronomers in developing countries sometimes have inadequate access to on-line resources. To address these issues, an 'Astronomers Data Manifesto' has been formulated with the aim of initiating a discussion that will lead to the development of a 'code of best practice' in astronomical data management.
description: Proceedings of Special Session SPS6 (Astronomical Data Management) at the IAU GA 2006. To appear in Highlights of Astronomy, Volume 14, ed. K.A. van der Hucht
“TURLI MUHITLARDA ELEKTR TOKI” MAVZUSINI О'QITISHDAGI INNOVATSIYALAR
Creators: name: Sh. A. Durdiyeva
name: U. A. Eshniyozov
name: I. G. Tursunov
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: talim
pedagogika
elektr toki
innovatsiya

description: Ushbu maqolada fizika kursining «Turli muhitlarda elektr toki» mavzusiga oid namoyish tajribalarining ilmiy о„quv mazmundorligini aniqlash va tajribalarni muammoli kо„rsatish stsenariylarini о„z ichiga olib, u izlanuvchan fizika о„qituvchilariga о„z faoliyatlari samaradorligini oshirishda hamda universitetlar talabalariga fizikani о„qitishning samarali texnologiyalarini о„zlashtirishda kо„mak berishi mumkin
HAMID OLIMJON SHE'RIYATIDA LEKSIK TAKRORLAR
Creators: name: Mohizar Ulugbek Qizi Nomonova
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Badiiy tasvir vositalari
badiiy takror
takror
anafora
mukarrar
takrir
epifora
juft va takroriy soʻzlar
epifora usuli
tovush takrori

description: Hamid Olimjon she’riyatida badiiy tasvir vositalaridan mohirona foydalanilgan. Shoir lirikasining takrorlarga boyligi, ayniqsa, leksik takrorlarning mahorat bilan qoʻllanilganligi she’rning ta’sir kuchini yanada oshiradi. Hamid Olimjon she’riyatidagi badiiy takrorlar ohangdoshlikni ta’minlagan, tasvirning ifodaliligini oshirgan, mazmun va shakl uyg’unligini hosil qilgan
Quasi-stationary solutions in non-Hermitian systems
Creators: name: Yuce, C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Eigenstates exhibit localization at an open edge in a non-Hermitian lattice due to non-Hermitian skin effect. We here explore another interesting feature of non-Hermitian skin effect and predict quasi-stationary solutions, which are approximately time-independent. We show that the transition from such states to eigenstates is dramatically non-perturbative. We discuss that mathematically extending the boundary of a long non-Hermitian lattice to infinity can lead to nontrivial solution. We consider a non-Hermitian variant of the Su-Schrieffer-Heeger (SSH) model and predict non-topological but robust quasi-stationary zero energy modes.
РАЗВИТИЕ РЕЧИ И МЕТОДИКА ПРЕПОДАВАНИЯ РУССКОГО ЯЗЫКА В УЗБЕКСКОЙ ШКОЛЕ
Creators: name: А. А. Хуснутдинова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: методика
система обучения и воспитания
аспекты преподавания.

description: Статья посвящена проблеме развитию речи школьников с узбекским языком обучения и актуальным вопросам методики преподавания русского языка как неродного.
Density of Yang-Lee zeros for the Ising ferromagnet
Creators: name: Kim, Seung-Yeon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The densities of Yang-Lee zeros for the Ising ferromagnet on the $L\times L$ square lattice are evaluated from the exact grand partition functions ($L=3\sim16$). The properties of the density of Yang-Lee zeros are discussed as a function of temperature $T$ and system size $L$. The three different classes of phase transitions for the Ising ferromagnet, first-order phase transition, second-order phase transition, and Yang-Lee edge singularity, are clearly distinguished by estimating the magnetic scaling exponent $y_h$ from the densities of zeros for finite-size systems. The divergence of the density of zeros at Yang-Lee edge in high temperatures (Yang-Lee edge singularity), which has been detected only by the series expansion until now for the square-lattice Ising ferromagnet, is obtained from the finite-size data. The identification of the orders of phase transitions in small systems is also discussed using the density of Yang-Lee zeros.
description: to appear in Physical Review E
title: Do you care to share? : risks and rewards of sharing personal information with colleagues
Creators: name: Longmire, Natalie Henninger
Publisher: name: The University of Texas at Austin
Year: 2019
Subjects: Work relationships
Sharing personal information

description: With a growing cultural emphasis on authenticity and bringing your “full self” to work, exchanging personal information with colleagues has become commonplace. Social psychological theory generally predicts direct and positive effects of personal sharing on relationship quality, but features unique to work relationships suggest some potential risks. With this dissertation, I draw from theories of work-nonwork boundary management and invisible stigma disclosure to make a case for a focused investigation into personal sharing that resolves current theoretical and empirical inconsistencies. In an initial qualitative study, I find that a wide variety of employees view selectivity – the intentional creation of variation across personal sharing content and targets – as more important than overall volume for garnering more positive competence and warmth evaluations from colleagues. Further, I develop a model in which these interpersonal perceptions are theorized to explain targets’ instrumental and psychosocial support provided to actors who share selectively. After developing and validating a measure for selectivity, I test the full theoretical model in a field study of marketing and communications employees in a Northeastern healthcare company. Results support the basic proposition that selectivity is more consequential to interpersonal evaluations and support than personal sharing volume. Specifically, they suggest that actors who share with task-based selectivity are more likely to be evaluated as competent, whereas those who share with dyad-based selectivity are more likely to be seen as warm, and less likely to experience markers of negative work relationships (task conflict and ostracism) with colleagues. However, target-based selectivity unexpectedly emerges as a risk factor, damaging targets’ perceptions of the actor’s warmth and exacerbating both task and relationship conflict. I do not find associations between actor personal sharing volume and target outcomes. Theoretical and practical implications are discussed, along with some promising avenues for future research.
Tree population dynamics of some old sub-boreal spruce stands
Creators: name: Kneeshaw, Daniel D.
Publisher: name: University of British Columbia
Year: 2008

description: Disturbance at the scale of single trees shapes the development of boreal forest ecosystems, especially in 'overmature' or 'old-growth' stages, despite the acknowledged role of fire as a catastrophic agent of stand reinitiation. This study has reconstructed the population dynamics of fourteen Sub-Boreal Spruce stands (composed of Picea engelmanni x glauca, Abies lasiocarpa and lesser amounts of Pinus contorta and Populus tremuloides) since the last stand destroying wildfire. Identification of the post-disturbance cohort and subsequent recruitment provided a means of assessing the relative role of small-scale (single-tree) disturbance and large-scale, catastrophic disturbance on species composition and stand development. The results suggest that SBS stands are self-perpetuating, and that although Picea may disappear from some stands it is maintained within forests of this zone. Presumably due to its high shade tolerance, Abies recruitment (when present) occurred uniformly throughout the stand's history. Picea ingress was associated with more exacting conditions, and it can return in sufficient numbers to perpetuate itself after long periods of exclusion. Minor disturbances were important in accelerating the reinitiation of Picea below the forest canopy. In many stands Abies was the most abundant species but this study suggests that although Picea regeneration often occurred in lower numbers it is maintained as a dominant overstory species due to poorer Abies recruitment to larger size classes. In many of the stands there was evidence of an earlier Populus component that may have played an important role in conifer establishment after wildfire. The faster growing Populus may ameliorate harsh environmental conditions to the benefit of conifer regeneration. This process may be especially important in the Sub-Boreal Spruce zone where long periods of colonization (on average 75 years but up to 100 years) are common. Another part of this project focused on defining the later stages of forest stand development in terms of tree population biology. Old-growth was recognized as the stage when the rate of tree regeneration and mortality, and thus age structure, are influenced more by single tree processes than by the stand initiating disturbance (Hayward 1991). The tree population structures and old-growth attributes described for SBS stands suggest that this definition was a useful and objective ecological tool for ranking the later stages of stand development. In the SBS structural data was found appropriate for identifying the later stages of stand development through multivariate analysis. Attributes found to be strongly correlated with stand development, such as the number of large downed logs and snags, reflect the importance of single-tree mortalities to the old-growth stage.
ЮҚОРИ МАЛАКАЛИ ГАНДБОЛЧИЛАРНИНГ РАҚАБАТДОШЛИК ФАОЛИЯТИДА САМАРАЛИ ҲАРАКАТЛАРНИ ҚЎЛЛАШ
Creators: name: Илҳом Камолович Қурбонов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: рақобатбардош фаолият
гандбол жамоалари
тезкор ҳужум

description: Ушбу мақола юқори малакали гандбол жамоаларининг рақобатбардош фаолияти жараѐнида қарши ҳужумлардан фойдаланиш масаласини кўриб чиқади. Тезкор ҳужум турларини таҳлил қилиш орқали тадқиқотлар амалга оширилади. Жамоа ўйинчиларининг мусобақа жараѐнидаги қарши ҳужум ҳаракатлари сони, нисбати ва самарадорлигининг умумий кўрсаткичлари келтирилган
Do CRM Systems Cause One-to-One Marketing Effectiveness?
Creators: name: Mithas, Sunil
name: Almirall, Daniel
name: Krishnan, M. S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: This article provides an assessment of the causal effect of customer relationship management (CRM) applications on one-to-one marketing effectiveness. We use a potential outcomes based propensity score approach to assess this causal effect. We find that firms using CRM systems have greater levels of one-to-one marketing effectiveness. We discuss the strengths and challenges of using the propensity score approach to design and execute CRM related observational studies. We also discuss the applicability of the framework in this paper to study typical causal questions in business and electronic commerce research at the firm, individual and economy levels, and to clarify the assumptions that researchers must make to infer causality from observational data.
description: Published at http://dx.doi.org/10.1214/088342306000000213 in the Statistical Science (http://www.imstat.org/sts/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Decoherence of an $n$-qubit quantum memory
Creators: name: Gorin, Thomas
name: Pineda, Carlos
name: Seligman, Thomas H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze decoherence of a quantum register in the absence of non-local operations i.e. of $n$ non-interacting qubits coupled to an environment. The problem is solved in terms of a sum rule which implies linear scaling in the number of qubits. Each term involves a single qubit and its entanglement with the remaining ones. Two conditions are essential: first decoherence must be small and second the coupling of different qubits must be uncorrelated in the interaction picture. We apply the result to a random matrix model, and illustrate its reach considering a GHZ state coupled to a spin bath.
description: 4 pages, 2 figures
GENDER TENGLIGI: AYOLLARNING HUQUQ VA IMKONIYATLARINI KENGAYTIRISH
Creators: name: Ibrohim Shuxratovich Fayziyev
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: diskriminatsiya
gender
xavfsizlik
ombudsman
konvensiya

description: Maqolada O’zbekiston Respublikasida ayollar haq-huquqlarini himoya qilish va uni jamiyat hayotida tutgan rolini oshirish masalasida fikr yuritilgan. Bundan tashqari ayollarga nisbatan diskriminatsiya, tahqirlash, zo’rlash kabi muammolar asosiy o’ringa qo’yilgan
An Experimental Review on Deep Learning Architectures for Time Series Forecasting
Creators: name: Lara-Benítez, Pedro
name: Carranza-García, Manuel
name: Riquelme, José C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In recent years, deep learning techniques have outperformed traditional models in many machine learning tasks. Deep neural networks have successfully been applied to address time series forecasting problems, which is a very important topic in data mining. They have proved to be an effective solution given their capacity to automatically learn the temporal dependencies present in time series. However, selecting the most convenient type of deep neural network and its parametrization is a complex task that requires considerable expertise. Therefore, there is a need for deeper studies on the suitability of all existing architectures for different forecasting tasks. In this work, we face two main challenges: a comprehensive review of the latest works using deep learning for time series forecasting; and an experimental study comparing the performance of the most popular architectures. The comparison involves a thorough analysis of seven types of deep learning models in terms of accuracy and efficiency. We evaluate the rankings and distribution of results obtained with the proposed models under many different architecture configurations and training hyperparameters. The datasets used comprise more than 50000 time series divided into 12 different forecasting problems. By training more than 38000 models on these data, we provide the most extensive deep learning study for time series forecasting. Among all studied models, the results show that long short-term memory (LSTM) and convolutional networks (CNN) are the best alternatives, with LSTMs obtaining the most accurate forecasts. CNNs achieve comparable performance with less variability of results under different parameter configurations, while also being more efficient.
Quantum-dot spin qubit and hyperfine interaction
Creators: name: Klauser, D.
name: Coish, W. A.
name: Loss, Daniel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We review our investigation of the spin dynamics for two electrons confined to a double quantum dot under the influence of the hyperfine interaction between the electron spins and the surrounding nuclei. Further we propose a scheme to narrow the distribution of difference in polarization between the two dots in order to suppress hyperfine induced decoherence.
description: 12 pages, 3 figures; Presented as plenary talk at the annual DPG meeting 2006, Dresden (to appear in Advances in Solid State Physics vol. 46, 2006)
ЁШЛАР ИЖТИМОИЙ ҲАЁТИНИНГ КОГНИТИВ АСОСЛАРИ
Creators: name: Дилноза Орзиқуловна Норбоева
name: Ҳожиев Расулбек Бойназар Ўғли
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Антропомаксималогия
ижтимоий борлиқ
интеллект
интеллектуал салоҳият
когнитив
тарбия
ѐшлар
ѐшларга оид давлат сиѐсати

description: Мазкур мақолада ѐшларнинг ижтимоий борлиқда тутган ўрни, мамлакатимизда ѐшларга қаратилаѐтган эътибор, ѐшларнинг ҳаѐтида интеллектуал салоҳиятнинг аҳамияти ҳамда уни ривожлантириш омиллари, мамлакатимиз ѐшларининг билим олишга бўлган қизиқишлари ўтказилган тадқиқотлар натижаларига кўра таҳлил қилинган
Gravitational-wave glitches in chaotic extreme-mass-ratio inspirals
Creators: name: Destounis, Kyriakos
name: Suvorov, Arthur G.
name: Kokkotas, Kostas D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The Kerr geometry admits the Carter symmetry, which ensures that the geodesic equations are integrable. It is shown that gravitational waveforms associated with extreme-mass-ratio inspirals involving a non-integrable compact object display `glitch' phenomena, where the frequencies of gravitational waves increase abruptly, when the orbit crosses certain spacetime regions known as Birkhoff islands. The presence or absence of these features in data from upcoming space-borne detectors will therefore allow not only for tests of general relativity, but also of fundamental spacetime symmetries.
description: 5 pages, 2 figures, accepted for publication in Physical Review Letters, matches published version
The Schwarzschild-de Sitter solution in five-dimensional general relativity briefly revisited
Creators: name: Fonseca-Neto, J. B.
name: Romero, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We briefly revisit the Schwarzschild-de Sitter solution in the context of five-dimensional general relativity. We obtain a class of five-dimensional solutions of Einstein vacuum field equations into which the four-dimensional Schwarzschild-de Sitter space can be locally and isometrically embedded. We show that this class of solutions is well-behaved in the limit of lambda approaching zero. Applying the same procedure to the de Sitter cosmological model in five dimensions we obtain a class of embedding spaces which are similarly well-behaved in this limit. These examples demonstrate that the presence of a non-zero cosmological constant does not in general impose a rigid relation between the (3+1) and (4+1)-dimensional spacetimes, with degenerate limiting behaviour.
description: 7 pages
A Model of Muon Anomalies
Creators: name: Greljo, Admir
name: Stangl, Peter
name: Thomsen, Anders Eller
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The Standard Model (SM) is augmented with a $\mathrm{U}(1)_{B-3L_μ} $ gauge symmetry spontaneously broken above the TeV scale when an SM-singlet scalar condenses. Scalar leptoquarks $S_{1(3)} = (\overline{\mathbf{3}},\, \mathbf{1} (\mathbf{3}),\, ^1\!/_3)$ charged under $\mathrm{U}(1)_{B-3L_μ} $ mediate the intriguing effects observed in muon $(g-2)$, $R_{K^{(*)}}$ and $b \to s μ^+ μ^-$, while generically evading all other phenomenological constraints. The fermionic sector is minimally extended with three right-handed neutrinos, and a successful type-I seesaw mechanism is realized. Charged lepton flavor violation is effectively suppressed, and proton decay - a common prediction of leptoquarks - is postponed to the dimension-6 effective Lagrangian. Unavoidable radiative corrections in the Higgs mass and muon Yukawa favor leptoquark masses interesting for collider searches. The parameters of the model are radiatively stable and can be evolved by the renormalization group to the Planck scale without inconsistencies. Alternative lepton-flavored gauge extensions of the SM, under which leptoquarks become muoquarks, are proposed for comparison.
description: 11 pages, 4 figures. Version2: Updated after the g-2 release. Discussion on alternative models extended. References added
Interference through quantum dots
Creators: name: Tokura, Y.
name: Nakano, H.
name: Kubo, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss the effect of quantum interference on transport through a quantum dot system. We introduce an indirect coherent coupling parameter alpha, which provides constructive/destructive interference in the transport current depending on its phase and the magnetic flux. We estimate the current through the quantum dot system using the non-equilibrium Green's function method as well as the master equation method in the sequential tunneling regime. The visibility of the Aharonov-Bohm oscillation is evaluated. For a large inter-dot Coulomb interaction, the current is strongly suppressed by the quantum interference effect, while the current is restored by applying an oscillating resonance field with the frequency of twice the inter-dot tunneling energy.
description: 10 pages, 3 figures
A Universality Test of the Quantum String Bethe Ansatz
Creators: name: Freyhult, Lisa
name: Kristjansen, Charlotte
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the quantum corrected string Bethe ansatz passes an important universality test by demonstrating that it correctly incorporates the non-analytical terms in the string sigma model one-loop correction for rational three-spin strings with two out of the three spins identical. Subsequently, we use the quantum corrected string Bethe ansatz to predict the exact form of the non-analytic terms for the generic rational three-spin string.
description: 12 pages, references added
Syntactic elicitation (various), phonological elicitation, and picture task
Creators: name: BPO
name: DHP
name: Baclawski, Kenneth
name: Sikhara (Đàng Thanh Quốc Thuận)
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: cjm

description: Picture task: Using cards from the board game Dixit to elicit question-answer pairs. Syntactic elicitation: Resumptive pronouns, topicalization.
Symmetry-enforced band crossings in tetragonal materials: Dirac and Weyl degeneracies on points, lines, and planes
Creators: name: Hirschmann, Moritz M.
name: Leonhardt, Andreas
name: Kilic, Berkay
name: Fabini, Douglas H.
name: Schnyder, Andreas P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the occurrence of symmetry-enforced topological band crossings in tetragonal crystals with strong spin-orbit coupling. By computing the momentum dependence of the symmetry eigenvalues and the global band topology in the entire Brillouin zone, we determine all symmetry-enforced band crossings in tetragonal space groups. In particular, we classify all Dirac and Weyl degeneracies on points, lines, and planes, and find a rich variety of topological degeneracies. This includes, among others, double Weyl points, fourfold-double Weyl points, fourfold-quadruple Weyl points, Weyl and Dirac nodal lines, as well as topological nodal planes. For the space groups with symmetry-enforced Weyl points, we determine the minimal number of Weyl points for a given band pair and, remarkably, find that materials in space groups 119 and 120 can have band pairs with only two Weyl points in the entire Brillouin zone. This simplifies the topological responses, which would be useful for device applications. Using the classification of symmetry-enforced band crossings, we perform an extensive database search for candidate materials with tetragonal space groups. Notably, we find that Ba$_5$In$_4$Bi$_5$ and NaSn$_5$ exhibit twofold and fourfold Weyl nodal lines, respectively, which cross the Fermi energy. Hf$_3$Sb and Cs$_2$Tl$_3$ have band pairs with few number of Weyl points near the Fermi energy. Furthermore, we show that Ba$_3$Sn$_2$ has Weyl points with an accordion dispersion and topological nodal planes, while AuBr and Tl$_4$PbSe$_3$ possess Dirac points with hourglass dispersions. For each of these candidate materials we present the ab-initio band structures and discuss possible experimental signatures of the nontrivial band topology.
description: 31 pages, 17 figures
4D Effective Theory and Geometrical Approach
Creators: name: Salvio, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the 4D effective theory for the light Kaluza-Klein (KK) modes. The heavy KK mode contribution is generally needed to reproduce the correct physical predictions: an equivalence, between the effective theory and the D-dimensional (or geometrical) approach to spontaneous symmetry breaking (SSB), emerges only if the heavy mode contribution is taken into account. This happens even if the heavy mode masses are at the Planck scale. In particular, we analyze a 6D Einstein-Maxwell model coupled to a charged scalar and fermions. Moreover, we briefly review non-Abelian and supersymmetric extensions of this theory.
description: 7 pages, 2 figures. Proceeding for the Cairo International Conference on High Energy Physics (CICHEP II), 14 - 17 January 2006
Distinguishing Tidal Disruption Events from Impostors
Creators: name: Zabludoff, Ann
name: Arcavi, Iair
name: La Massa, Stephanie
name: Perets, Hagai B.
name: Trakhtenbrot, Benny
name: Zauderer, B. Ashley
name: Auchettl, Katie
name: Dai, Jane L.
name: French, K. Decker
name: Hung, Tiara
name: Kara, Erin
name: Lodato, Giuseppe
name: Maksym, W. Peter
name: Qin, Yujing
name: Ramirez-Ruiz, Enrico
name: Roth, Nathaniel
name: Runnoe, Jessie C.
name: Wevers, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent claimed detections of tidal disruption events (TDEs) in multi-wavelength data have opened potential new windows into the evolution and properties of otherwise dormant supermassive black holes (SMBHs) in the centres of galaxies. At present, there are several dozen TDE candidates, which share some properties and differ in others. The range in properties is broad enough to overlap other transient types, such as active galactic nuclei (AGN) and supernovae (SNe), which can make TDE classification ambiguous. A further complication is that "TDE signatures" have not been uniformly observed to similar sensitivities or even targeted across all candidates. This chapter reviews those events that are unusual relative to other TDEs, including the possibility of TDEs in pre-existing AGN, and summarises those characteristics thought to best distinguish TDEs from continuously accreting AGN, strongly flaring AGN, SNe, and Gamma-Ray Bursts (GRBs), as well as other potential impostors like stellar collisions, "micro-TDEs," and circumbinary accretion flows. We conclude that multiple observables should be used to classify any one event as a TDE. We also consider the TDE candidate population as a whole, which, for certain host galaxy or SMBH characteristics, is distinguishable statistically from non-TDEs, suggesting that at least some TDE candidates do in fact arise from SMBH-disrupted stars.
description: 57 pages, 17 figures. Accepted for publication in Springer Space Science Reviews. Chapter in ISSI review "The Tidal Disruption of Stars by Massive Black Holes" vol. 79. Corrected several typos from previous submission
The principle of equivalence and projective structure in space-times
Creators: name: Hall, G. S.
name: Lonie, D. P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper discusses the extent to which one can determine the space-time metric from a knowledge of a certain subset of the (unparametrised) geodesics of its Levi-Civita connection, that is, from the experimental evidence of the equivalence principle. It is shown that, if the space-time concerned is known to be vacuum, then the Levi-Civita connection is uniquely determined and its associated metric is uniquely determined up to a choice of units of measurement, by the specification of these geodesics. It is further demonstrated that if two space-times share the same unparametrised geodesics and only one is assumed vacuum then their Levi-Civita connections are again equal (and so the other metric is also a vacuum metric) and the first result above is recovered.
description: 23 pages, submitted to Classical and Quantum Gravity
Reconstruction of $Λ$CDM Universe in $f(Q)$ Gravity
Creators: name: Gadbail, Gaurav N.
name: Mandal, Sanjay
name: Sahoo, P. K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this manuscript, we present a number of fascinating explicit reconstructions for the $f(Q)$ gravity from the background of Friedmann-Laîmatre-Robertson-Walker (FLRW) evolution history. We find the more general functions of non-metricity scalar $Q$ that admit exact $Λ$CDM expansion history. Adding extra degrees of freedom to the matter sector is the only method to get the scale factor to behave in this manner for more generic functions of $Q$. In addition, a cosmological reconstruction for modified $f(Q)$ gravity is constructed in terms of e-folding. It is shown how any FLRW cosmology can arise from a specific $f(Q)$ theory. We also reconstruct the well-known cosmological evolution for the specific examples of $Λ$CDM cosmology.
description: PLB accepted version
Collective multipole expansions and the perturbation theory in the quantum three-body problem
Creators: name: Meremianin, A. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Mathematical Physics (math-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The perturbation theory with respect to the potential energy of three particles is considered. The first-order correction to the continuum wave function of three free particles is derived. It is shown that the use of the collective multipole expansion of the free three-body Green function over the set of Wigner $D$-functions can reduce the dimensionality of perturbative matrix elements from twelve to six. The explicit expressions for the coefficients of the collective multipole expansion of the free Green function are derived. It is found that the $S$-wave multipole coefficient depends only upon three variables instead of six as higher multipoles do. The possible applications of the developed theory to the three-body molecular break-up processes are discussed.
description: 20 pages, 2 figures
Development of a subsystem and algorithm for alignment and overlay improvement for microlithography
Creators: name: Cherala, Anshuman
Publisher: name: The University of Texas at Austin
Year: 2004
Subjects: Microlithography
Overlay improvement
Template mechanical deformation
Inverse solutions

description: Microlithography is the process of transfer of minute electronic circuit patterns from a template (also called a mask) onto the surface of wafers for the manufacture of integrated circuits (ICs). A typical IC consists of seven to twenty layers of patterns. In this process it is essential to align patterns to the previous layer with an accuracy of better than the minimum feature size on the patterns. Failing to meet alignment targets leads to failure of ICs and hence a reduced process yield. Manufacturing processes in mask making, wafer processing and the process of pattern transfer itself cause the distortion of patterns. Technologies that work with smaller pattern sizes (below 65nm) like imprint lithography hence have more stringent requirements. Hence, overlay alignment is a huge challenge and a very important process of lithography. This thesis discusses the development of a sub-module concept that can be added to commercial lithography machines to reduce alignment and overlay errors and hence improve overlay. The concept makes use of the fact that the masks used in optical and imprint lithography are 250 mil thick plates of fused silica, a mechanically robust substrate as compared to X-ray masks which are made of thin silicon films. Distortion correction methods have been disclosed for X-ray lithography in literature claiming to control magnification and distortions by applying forces on the ends of the thin silicon film. A similar idea is much easier to implement on optical lithography masks. This thesis discusses a method to correct alignment and overlay errors by the application of a number of forces on the sides of the optical mask. The mask was modeled using Finite Element Methods. The development of optimization routines to minimize distortions is discussed. Overlay improvement results with actual pattern placement data are presented. The results show that significant reduction in distortions is achievable through this method.
Parkinson's disease and obstructive sleep apnea
Creators: name: Kawada, Tomoyuki
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: Parkinson's disease
obstructive sleep apnea
causal association

description: EXCLI Journal; 20:Doc490; ISSN 1611-2156
On the Origin of HD149026b
Creators: name: Ikoma, M.
name: Guillot, T.
name: Genda, H.
name: Takayuki, T.
name: Ida, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The high density of the close-in extrasolar planet HD149026b suggests the presence of a huge core in the planet, which challenges planet formation theory. We first derive constraints on the amount of heavy elements and hydrogen/helium present in the planet: We find that preferred values of the core mass are between 50 and 80 M_E. We then investigate the possibility of subcritical core accretion as envisioned for Uranus and Neptune and find that the subcritical accretion scenario is unlikely in the case of HD149026b for at least two reasons: (i) Subcritical planets are such that the ratio of their core mass to their total mass is above ~0.7, in contradiction with constraints for all but the most extreme interior models of HD149026b; (ii) High accretion rates and large isolation mass required for the formation of a subcritical core of 30 M_E are possible only at specific orbital distances in a disk with a surface density of dust equal to at least 10 times that of the minimum mass solar nebula. This value climbs to 30 when considering a 50 M_E core. These facts point toward two main routes for the formation of this planet: (i) Gas accretion that is limited by a slow viscous inflow of gas in an evaporating disk; (ii) A significant modification of the composition of the planet after as accretion has stopped. These two routes are not mutually exclusive. Illustrating the second route, we show that for a wide range of impact parameters, giant impacts lead to a loss of the gas component of the planet and thus may lead to planets that are highly enriched in heavy elements. In the giant impact scenario, we expect an outer giant planet to be present. Observational studies by imaging, astrometry and long term interferometry of this system are needed to better narrow down the ensemble of possibilities.
description: 29 pages, 8 figures, to appear in the 10 October 2006 issue of ApJ
О. Гаврилюк, М. Ягодинская. Древнерусские предметы христианского культа из Западной Подолии и Юго-Западной Волыни
Creators: name: Ягодинська, Марина
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 430101
subject: Archaeological science

description: Археологические вести. №12. Санкт-Петербург, 2005
Resonances in Barred Galaxies
Creators: name: Ceverino, Daniel
name: Klypin, Anatoly
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The inner parts of many spiral galaxies are dominated by bars. These are strong non-axisymmetric features which significantly affect orbits of stars and dark matter particles. One of the main effects is the dynamical resonances between galactic material and the bar. We detect and characterize these resonances in N-body models of barred galaxies by measuring angular and radial frequencies of individual orbits. We found narrow peaks in the distribution of orbital frequencies with each peak corresponding to a specific resonance. We found five different resonances in the stellar disk and two in the dark matter. The corotation resonance and the inner and outer Lindblad resonances are the most populated. The spatial distributions of particles near resonances are wide. For example, the inner Lindblad resonance is not localized at a given radius. Particles near this resonance are mainly distributed along the bar and span a wide range of radii. On the other hand, particles near the corotation resonance are distributed in two broad areas around the two stable Lagrange points. The distribution resembles a wide ring at the corotation radius. Resonances capture disk and halo material in near-resonant orbits. Our analysis of orbits in both N-body simulations and in simple analytical models indicates that resonances tend to prevent the dynamical evolution of this trapped material. Only if the bar evolves as a whole, resonances drift through the phase space. In this case particles anchored near resonant orbits track the resonance shift and evolve. The criteria to ensure a correct resonant behavior discussed in Weinberg & Katz (2007a) can be achieved with few millions particles because the regions of trapped orbits near resonances are large and evolving.
description: 16 pages, 20 figures and 3 tables. Accepted for publication in MNRAS. Corrected typos, added references. Full resolution version available at http://astronomy.nmsu.edu/dept/html/directory.grads.danielcv.shtml
Syntactic elicitation (various)
Creators: name: DHP
name: Baclawski, Kenneth
name: Sikhara (Đàng Thanh Quốc Thuận)
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: cjm

description: Appositives, topicalization, discourse relations, D-linking, anti-pronominal environments