cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Two-triplon excitations of the Kitaev-Heisenberg-Bilayer
Creators: name: Wagner, Erik
name: Brenig, Wolfram
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the spectrum of a bilayer of Kitaev magnets on the honeycomb lattice, coupled by Heisenberg exchange in the quantum-dimer phase at strong interlayer coupling. Using the perturbative Continuous Unitary transformation (pCUT) we perform series expansion starting from the fully dimerized limit, to evaluate the elementary excitations, reaching up to and focusing on the two-triplon sector. In stark contrast to conventional bilayer quantum magnets, and because of the broken $SU(2)$-invariance, encoded in the intralayer directional compass-exchange, the bilayer Kitaev magnet is shown to exhibit a rich structure of two-triplon scattering-state continua, as well as several collective two-triplon (anti)bound states. Direct physical pictures for the occurrence of the latter are provided and the (anti)bound states are studied versus the stacking type, the spin components, and the exchange parameters. In addition to the two-triplon spectra, we investigate a corresponding experimental probe by evaluating the magnetic Raman-scattering intensity. We find a very strong sensitivity of this intensity on the two-triplon interactions and the scattering geometry, however a signal from the (anti)bound states appears only in very close proximity to the continuum.
description: 13 pages, 11 figures
Deciphering Contact Interactions and Exploration Strategies Underlying Tactile Perception of Material Softness
Creators: name: Xu, Chang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Our sense of touch is essential and permeates in interactions involving natural explorations and affective communications. For instance, we routinely judge the ripeness of fruit at the grocery store, caress the arm of a spouse to offer comfort, and stroke textiles to gauge their softness. Meanwhile, interactive displays that provide tactile feedback are becoming normal and ubiquitous in our daily lives, and are extending rich and immersive interactions into augmented and virtual reality. To replicate touch sensation and make virtual objects feel tangible, such feedback will need to relay a sense of compliance, or softness, one of the key dimensions underlying haptic perception. As our understanding of softness perception remains incomplete, this study seeks to understand exploratory strategies and perceptual cues that may optimally encode material softness. Specifically, we employ methods of computational finite element modeling, biomechanical experimentation, psychophysical evaluation, and data-driven analysis. Overall, this work may aid in engineering the next-generation wearable haptic displays, which must be more tangible, compatible, and perceptually naturalistic.
description: PHD Dissertation (Doctor of Philosophy), Systems Engineering, University of Virginia
Molecular Hydrogen Formation on Amorphous Silicates Under Interstellar Conditions
Creators: name: Perets, Hagai B.
name: Lederhendler, Adina
name: Biham, Ofer
name: Vidali, Gianfranco
name: Li, Ling
name: Swords, Sol
name: Congiu, Emanuele
name: Roser, Joe
name: Manico, Giulio
name: Brucato, John Robert
name: Pirronello, Valerio
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Experimental results on the formation of molecular hydrogen on amorphous silicate surfaces are presented for the first time and analyzed using a rate equation model. The energy barriers for the relevant diffusion and desorption processes are obtained. They turn out to be significantly higher than those obtained earlier for polycrystalline silicates, demonstrating the importance of grain morphology. Using these barriers we evaluate the efficiency of molecular hydrogen formation on amorphous silicate grains under interstellar conditions. It is found that unlike polycrystalline silicates, amorphous silicate grains are efficient catalysts of H$_{2}$ formation within a temperature range which is relevant to diffuse interstellar clouds. The results also indicate that the hydrogen molecules are thermalized with the surface and desorb with low kinetic energy. Thus, they are unlikely to occupy highly excited states.
description: 5 pages, 3 figures, 1 table. Accepted to ApJL. Shortened a bit
[Extended abstract] Politicizing the pandemic across platforms - Scandinavian parties and leaders online during the initial phase of COVID-19
Creators: name: Jacobsen, Roy Aulie
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 470101
subject: Communication studies
classificationCode: 440899
subject: Political science not elsewhere classified

description: This abstract was submitted to a special issue of Political Communication on multi-platform research. The journal wanted empirical studies using qualitative, quantitative, computational and mixed-methods approaches (inclusive of descriptive and causal studies) and theoretical pieces that have direct applications to multi-platform research. The current work comes from a co-authored piece with Anders Olof Larsson. The call was announced here: https://think.taylorandfrancis.com/special_issues/political-communication-multi-platform-research/?utm_source=TFO&utm_medium=cms&utm_campaign=JPG15743&_ga=2.135155513.948621591.1692289188-709451181.1600275169&_gl=1*ldf0bf*_ga*NzA5NDUxMTgxLjE2MDAyNzUxNjk.*_ga_0HYE8YG0M6*MTY5MjM4MTQzNC4xNTguMS4xNjkyMzgxNTQ0LjAuMC4w
ОПТИМАЛЬНЫЕ УПРАВЛЕНИЯ ВОДНЫХ РЕСУРСОВ КРУПНЫХ МАГИСТРАЛЬНЫХ КАНАЛОВ С КАСКАДОМ НАСОСНЫХ СТАНЦИЙ ИРРИГАЦИОННЫХ СИСТЕМ
Creators: name: Б. Р. Хонимкулов
name: Э. М. Махкамов
name: Р. Н. Тураев
name: А. Р. Кутлимурадов
name: А. Ж. Сейтов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: математика
ирригация
канал
Сен-Венан

description: В статье приведены оптимальности задачи оптимального распределения воды в каналах ирригационных систем в условиях дискретности водоподачи в случае использовании в качестве математической модели неустановившегося движения воды на участках канала систему полных дифференциальных уравнений Сен-Венана, а также проведено метод численные решение по методом конечных разности дифференциального систему уравнение СенВенана
Improved $(g-2)_μ$ Measurements and Wino/Higgsino Dark Matter
Creators: name: Chakraborti, Manimala
name: Heinemeyer, Sven
name: Saha, Ipsita
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electroweak (EW) sector of the Minimal Supersymmetric Standard Model (MSSM) can account for a variety of experimental data. In particular, it can explain the persistent 3-4 sigma discrepancy between the experimental result for the anomalous magnetic moment of the muon and its Standard Model (SM) prediction. The lightest supersymmetric particle (LSP), which we take as the lightest neutralino, can furthermore account for the observed Dark Matter (DM) content of the universe via coannihilation with the next-to-LSP (NLSP), while being in agreement with negative results from Direct Detection (DD) experiments. Concerning the unsuccessful searches for EW superparticles at the LHC, owing to relatively small production cross-sections, a comparably light EW sector of the MSSM is in full agreement with the experimental data. The DM relic density can fully be explained by a mixed bino/wino LSP. Here we take the relic density as an upper bound, which opens up the possibility of wino and higgsino DM. We first analyze which mass ranges of neutralinos, charginos and scalar leptons are in agreement with all experimental data, including relevant LHC searches. We find roughly an upper limit of ~ 600 GeV for the LSP and NLSP masses. In a second step we assume that the new result of the Run 1 of the 'MUON G-2' collaboration at Fermilab yields a precision comparable to the existing experimental result with the same central value. We analyze the potential impact of the combination of the Run 1 data with the existing muon g-2 data on the allowed MSSM parameter space. We find that in this case the upper limits on the LSP and NLSP masses are substantially reduced by roughly 100 GeV. We interpret these upper bounds in view of future HL-LHC EW searches as well as future high-energy electron-positron colliders, such as the ILC or CLIC.
description: 44 pages, 22 figures, follow-up of arXiv:2006.15157
Inner-shell excitation of open-shell atoms: A spin-dependent localized Hartree-Fock density-functional calculation
Creators: name: Zhou, Zhongyuan
name: Chu, Shih-I
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The spin-dependent localized Hartree-Fock (SLHF) density-functional approach is extended to the treatment of the inner-shell excited-state calculation of open-shell atomic systems. In this approach, the electron spin-orbitals in an electronic configuration are obtained by solving Kohn-Sham (KS) equation with SLHF exchange potential and the Slater's diagonal sum rule is used to evaluate the multiplet energy of an inner-shell excited state from the single-Slater-determinant energies of the electronic configurations involved. This approach together with the correlation potentials and energy functionals proposed by Perdew and Wang's (PW) or Lee, Yang, and Parr's (LYP) have been used to calculate the total and excitation energies of inner-shell excited states of open-shell atomic systems: Li, B, Ne^+, Ne^{2+}, Ne^{3+}, and Na. The results with the PW and LYP energy functionals are in overall good agreement with each other and also with available experimental and other ab initio theoretical data. Some new results for highly excited inner-shell states are presented.
description: 8 pages and 6 tables
Evidence for production of single top quarks
Creators: name: D0 Collaboration
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present first evidence for the production of single top quarks in the D0 detector at the Fermilab Tevatron ppbar collider. The standard model predicts that the electroweak interaction can produce a top quark together with an antibottom quark or light quark, without the antiparticle top quark partner that is always produced from strong coupling processes. Top quarks were first observed in pair production in 1995, and since then, single top quark production has been searched for in ever larger datasets. In this analysis, we select events from a 0.9 fb-1 dataset that have an electron or muon and missing transverse energy from the decay of a W boson from the top quark decay, and two, three, or four jets, with one or two of the jets identified as originating from a b hadron decay. The selected events are mostly backgrounds such as W+jets and ttbar events, which we separate from the expected signals using three multivariate analysis techniques: boosted decision trees, Bayesian neural networks, and matrix element calculations. A binned likelihood fit of the signal cross section plus background to the data from the combination of the results from the three analysis methods gives a cross section for single top quark production of 4.7 +- 1.3 pb. The probability to measure a cross section at this value or higher in the absence of signal is 0.014%, corresponding to a 3.6 standard deviation significance. The measured cross section value is compatible at the 10% level with the standard model prediction for electroweak top quark production.
description: 51 pages, 30 figures. Updated version after review and acceptance in PRD
ЗАМОНАВИЙ ОЛАМДА ШАХСНИНГ ИЖТИМОИЙЛАШУВИ
Creators: name: Нигора Кудратовна Даминова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: шахс
инсон
ижтимоий
ижтимоийлашув
ѐшлар

description: Мақолада шахс ва унинг замонавий оламда ижтимоийлашуви масаласи ѐритилган бўлиб, ушбу мавзуда психолог олимларнинг олиб борган тадқиқотлари таҳлил қилинган. Мақолада психологлар ва мутахассисларнинг тадқиқотларида шахс хатти-ҳаракатларининг мазмун моҳияти асосларини ва инсоннинг инновацион хаттиҳаракатга қобилиятини ўрганиш масаласи мавжуд
Can gravitational dynamics be obtained by diffeomorphism invariance of action?
Creators: name: Gao, Sijie
name: Zhang, Hongbao
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It has recently been suggested that the gravitational dynamics could be obtained by requiring the action to be invariant under diffeomorphism transformations. We argue that the action constructed in usual way is automatically diffeomorphism invariant in nature, which thus invalidates this alternative perspective to obtain gravitational dynamics. Especially, we also show what is wrong with the technical derivation of gravitational dynamics in the alternative approach.
description: version published in PRD
ABDULLA ORIPOVNING “HIKMAT SADOLARI” TURKUM SHE'RLARIDA PAYG'AMBAR OBRAZINING IFODALANISHI
Creators: name: Ikromova, Nozima Husniddin Qizi
name: Nurboy Abdulhakimovich Jabborov
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Abdulla Oripov
“Hikmat sadolari” va “Haj daftari” turkumi
payg’ambar obrazi
hikmatli she’rlar
hadislar

description: Abdulla Oripovning qator to`plamlari orasida “Hikmat sadolari” va “Haj daftari” turkumi alohida ahamiyat kasb etadi. Ushbu maqolada turkum payg’ambar obrazining ifodalanishi haqida yoritiladi
Biomarkers of idiosyncratic drug-induced liver injury (DILI) - a systematic review
Creators: name: Atallah, Edmond
name: Freixo, Cristiana
name: Alvarez-Alvarez, Ismael
name: Cubero, F.J
name: Gerbes, Alexander L.
name: Kullak-Ublick, Gerd A.
name: Aithal, Guruprasad P.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Idiosyncratic drug-induced liver injury (DILI) is an unpredictable event, and there are no specific biomarkers that can distinguish DILI from alternative explanations or predict its clinical outcomes. This systematic review summarizes the available evidence for all biomarkers proposed to have a role in the diagnosis or prognosis of DILI. Following a comprehensive search, we included all types of studies in humans. We included DILI cases based on any threshold criteria but excluded intrinsic DILI, commonly caused by paracetamol overdose. We classified studies into diagnostic and prognostic categories and assessed their methodological quality. After reviewing the literature, 14 studies were eligible. Diagnostic studies were heterogeneous with regard to the study population and outcomes measured. Prognostic models were developed by integrating novel biomarkers, risk scores, and traditional biomarkers, which increased their prognostic ability to predict death or transplantation by 6 months. This systematic review highlights the case of need for non-genetic biomarkers that distinguish DILI from acute liver injury related to alternative etiology. Biomarkers with the potential to identify serious adverse outcomes from acute DILI should be validated in independent prospective cohorts with a substantial number of cases.
МАСОФАВИЙ ТАЪЛИМ ТИЗИМИНИНГ ЎЗИГА ХОС ХУСУСИЯТЛАРИ
Creators: name: Жахонгир Нодирович Шайматов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: масофавий таълим тизими
масофавий таълим моделлари
экстернат
консорциум
франчайзинг
валидацсия
узоқлаштирилган аудиториялар
лойиҳалар

description: Мақолада олий таълим тизимида масофавий таълим ва уни ўзига хос хусусиятлари, масофавий таълим тизимини ташкил килиш усул, шакл ва воситалари, аҳамияти, масофавий ўқитиш моделлари ва уларнинг турлари атрофлича кўрсатиб берилган
First results from the Pierre Auger Observatory
Creators: name: Shellard, R. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review in these notes the status of the construction of the Pierre Auger Observatory and present the first Physics results, based on the data collected during the first year and a half of operation. These results are preliminary, once the work to understand the systematics of the detectors are still underway. We discuss the cosmic ray spectrum above 3 EeV, based on the measurement done using the Surface Detector and the Fluorescence Detector, both, components of the observatory. We discuss, as well, the search for anisotropy near the Galactic Center and the limit on the photon fraction at the highest energies.
description: 10 pages, 16 figures, Brazilian National Meeting on Particle and Fields 2005
Ecological specificity of growth promoting bacteria for interior spruce (picea glauca x picea engelmanii)?
Creators: name: O’Neill, Gregory Arthur
Publisher: name: University of British Columbia
Year: 2008

description: Soil, rhizobacteria and interior spruce seed originating from two disparate ecosystems were used to examine the effect of rhizobacterial inoculation and the role of coexistence between rhizobacteria, seed provenances and soil sources on germination and spruce seedling growth in two experiments. Statistically significant enhancement of germination due to inoculation with bacteria was rare. Germination of seed inoculated with coexistent bacteria was significantly lower than germination of seed inoculated with non-coexistent bacteria. Inoculation of seed with bacteria resulted in significant enhancement of seedling growth in both experiments. Maximum shoot and root dry weight increases of 53% and 67%, respectively, were observed. The effect of inoculation on seedling growth varied greatly with seed provenance and soil source. Coexistent bacteria (i.e. originating from the same location as the target seed or soil) were not more effective growth promoters than non-coexistent bacteria. However, uninoculated seedlings grown incoexistent soil had 27% and 35% heavier shoot and root dry weights, respectively, than uninoculated seedlings grown in non-coexistent soil. The shoot and root biomass stimulation decreased to 17%and 23%, respectively, when coexistent pasteurized soil was used, suggesting that both biotic andabiotic soil factors may have contributed to seed-soil coexistence specificity. Novel findings in these experiments include the detection of: significant bacterial plant growth promotion of interior spruce; plant growth promotion by a Staphlococcus species; and adaptive relationships between seed and soil factors.
T-duality and Generalized Complex Geometry
Creators: name: Persson, Jonas
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find the explicit T-duality transformation in the phase space formulation of the N=(1,1) sigma model. We also show that the T-duality transformation is a symplectomorphism and it is an element of O(d,d). Further, we find the explicit T-duality transformation of a generalized complex structure in this model. We also show that the extended supersymmetry of the sigma model is preserved under the T-duality.
description: 18 pages; added references; published version
ТАЪЛИМ ВА ТАРБИЯДА ИНСОНПАРВАРЛИК ТАМОЙИЛИНИНГ ЗАРУРАТИ
Creators: name: С. А. Тоштемирова
name: Я. Х. Ғаффоров
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: таълим сифати
менежмент
модернизация
инсонпарварлаштириш
инсонпарвар парадигмалар
мустаҳкам асослилик
фаолият йўналиши
инновацион ѐндашувлар

description: Ушбу мақолада таълим сифати ва унинг самарадорлигини оширишга янгича ѐндашувларнинг татбиқ этилиши, яъни, таълимни инсонпарварлаштириш тамойили орқали сифат даражасини таъминлаш асослаб берилган
A Quantitative Approach to the Prediction of Drug-Drug Interactions Mediated by Cytochrome P450 2C8 Inhibition
Creators: name: Di Paolo, Veronica
name: Ferrari, Francesco Maria
name: Poggesi, Italo
name: Quintieri, Luigi
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Ohno and Colleagues proposed an approach for predicting drug–drug interactions (DDIs) mediated by cytochrome P450 (CYP) 3A4 based on the use of the ratio of the inhibited to non-inhibited area under the plasma concentration time curve (AUC) of substrates to estimate the fraction of the dose metabolized via CYP3A4 (contribution ratio, CR) and the in vivo inhibitory potency of a perpetrator (inhibition ratio, IR). This study evaluated the performance of this approach on DDIs mediated by CYP2C8 inhibitors. Initial estimates of CR and IR of CYP2C8 substrates and inhibitors were calculated for 33 DDI in vivo studies. The approach was externally validated with 17 additional studies. Bayesian orthogonal regression was used to refine the estimates of the parameters. Assessment of prediction success was conducted by plotting observed versus predicted AUC ratios. Final estimates of CRs and IRs were obtained for 19 CYP2C8 substrates and 23 inhibitors, respectively. The method demonstrated good predictive capacity, with only two values outside of the prespecified limits. The approach may help to adapt dose regimens for CYP2C8 substrates when given in combination with CYP2C8 inhibitors and to map the potential DDIs of new molecular entities.
Pseudoscalar Meson Nonet at Zero and Finite Temperature
Creators: name: Horvatic, D.
name: Blaschke, D.
name: Klabucar, D.
name: Radzhabov, A. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Theoretical understanding of experimental results from relativistic heavy-ion collisions requires a microscopic approach to the behavior of QCD n-point functions at finite temperatures, as given by the hierarchy of Dyson-Schwinger equations, properly generalized within the Matsubara formalism. The convergence of sums over Matsubara modes is studied. The technical complexity of finite-temperature calculations mandates modeling. We present a model where the QCD interaction in the infrared, nonperturbative domain, is modeled by a separable form. Results for the mass spectrum of light quark flavors (u, d, s) and for the pseudoscalar bound-state amplitudes at finite temperature are presented.
description: 14 pages, 11 figures, accepted for publication in Physics of Particles and Nuclei Letters, based on invited lectures at "Dense Matter In Heavy Ion Collisions and Astrophysics", 21.08-01.09 2006, Dubna, Russia
Fault-tolerant logical gates in holographic stabilizer codes are severely restricted
Creators: name: Cree, Sam
name: Dolev, Kfir
name: Calvera, Vladimir
name: Williamson, Dominic J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We evaluate the usefulness of holographic stabilizer codes for practical purposes by studying their allowed sets of fault-tolerantly implementable gates. We treat them as subsystem codes and show that the set of transversally implementable logical operations is contained in the Clifford group for sufficiently localized logical subsystems. As well as proving this concretely for several specific codes, we argue that this restriction naturally arises in any stabilizer subsystem code that comes close to capturing certain properties of holography. We extend these results to approximate encodings, locality-preserving gates, certain codes whose logical algebras have non-trivial centers, and discuss cases where restrictions can be made to other levels of the Clifford hierarchy. A few auxiliary results may also be of interest, including a general definition of entanglement wedge map for any subsystem code, and a thorough classification of different correctability properties for regions in a subsystem code.
description: 18 pages plus appendices, 10 figures
The Neighborhood Function and Its Application to Identifying Large-Scale Structure in the Comoving Universe Frame
Creators: name: Qin, Yi-Ping
name: Lv, Lian-Zhong
name: Zhang, Fu-Wen
name: Zhang, Bin-Bin
name: Zhang, Jin
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper a relative number density parameter, called the neighborhood function, is introduced so that the crowded nature of the neighborhood of individual sources can be described. With this parameter one can determine the probability of forming a cluster by chance. A method is proposed to identify large-scale structure in the cosmological comoving frame. The scale used to sort out clustered sources is determined by the mean local number density, and the sample adopted is required to have regular borders. The method is applied to a sample drawn from the Two Degree Field survey. We find from the analysis that the probability of forming the resulting large-scale structures by chance is very small, and the phenomenon of clustering is dominant in the local universe. Within a 3σconfidence level, a coherent cluster with a scale as large as 357h^{-1}Mpc is identified from the sample. There exist some galaxies which are not affected by the gravitation of clusters, and hence are suspected to be at rest in the comoving frame of the universe. Voids are likely volumes within which very crowded sources are not present, and they are likely formed in embryo by fluctuations in the very early epochs of the universe. In addition, we find that large-scale structures are coral-like and are likely made up of smaller structures; sources with large values of the neighborhood function are mainly distributed within the structure of prominent clusters, and they form the framework of the large-scale structure.
description: 68 pages, 26 figures and 2 tables, accepted for publication in ApJ
[Southern Pomo vocabulary and text]
Creators: name: Allen, Elsie
name: Sawyer, Jesse O.
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: peq
subject: Southern Pomo language

description: 2 handwritten pages of Southern Pomo vocabulary (dated 1977 August 4) and 4 undated photocopied pages of a text by Elsie Allen with title "Leaching acorns", original dated 2/4/82. For images of text, see Oswalt.001.017.
Excitation energy transfer between closely spaced multichromophoric systems: Effects of band mixing and intraband relaxation
Creators: name: Didraga, C.
name: Malyshev, V. A.
name: Knoester, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We theoretically analyze the excitation energy transfer between two closely spaced linear molecular J-aggregates, whose excited states are Frenkel excitons. The aggregate with the higher (lower) exciton band edge energy is considered as the donor (acceptor). The celebrated theory of Förster resonance energy transfer (FRET), which relates the transfer rate to the overlap integral of optical spectra, fails in this situation. We point out that in addition to the well-known fact that the point-dipole approximation breaks down (enabling energy transfer between optically forbidden states), also the perturbative treatment of the electronic interactions between donor and acceptor system, which underlies the Förster approach, in general loses its validity due to overlap of the exciton bands. We therefore propose a nonperturbative method, in which donor and acceptor bands are mixed and the energy transfer is described in terms of a phonon-assisted energy relaxation process between the two new (renormalized) bands. The validity of the conventional perturbative approach is investigated by comparing to the nonperturbative one; in general this validity improves for lower temperature and larger distances (weaker interactions) between the aggregates. We also demonstrate that the interference between intraband relaxation and energy transfer renders the proper definition of the transfer rate and its evaluation from experiment a complicated issue, which involves the initial excitation condition.
description: 13 pages, 6 PostScript figures
REALISM IN THE WORK OF ERNEST HEMINGWAY
Creators: name: Safarova, Dildora
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: impact
romantic time
influence
stoic hero
Second World War
―lost generation‖.

description: This article is dedicated to that E. Hemingway had a huge impact on the culture of the twentieth century the sixties were a romantic time — with a cult of wanderings, adventures, if you remember, it was the years of student revolutions, unrest; And here Hemingway becomes such an amazing archetypal image. The image of the macho man was fixed for a long time by culture, and at the same time Hemingway had not such a direct relation to this myth. Nevertheless, its popularity began to decline in the 1970s, and it became more of an academic subject.; research about him is becoming less and less, and finally, in 1999, the centenary of the birth of this great American writer, in general, passes almost unnoticed
Statistical Fitting of Evolution Models to Rotation Rates of Sun-Like Stars
Creators: name: Breimann, Angela A.
name: Matt, Sean P.
name: Naylor, Tim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We apply for the first time a two-dimensional fitting statistic, $τ^2$, to rotational evolution models (REMs) of stars (0.1 to 1.3 $M_{\odot}$) on the period-mass plane. The $τ^2$ statistic simultaneously considers all cluster rotation data to return a goodness of fit, allowing for data-driven improvement of REMs. We construct data sets for Upper Sco, the Pleiades and Praesepe, to which we tune our REMs. We use consistently determined stellar masses (calculated by matching $K_\textrm{s}$ magnitudes to isochrones) and literature rotation periods. As a first demonstration of the $τ^2$ statistic, we find the best-fitting gyrochronology age for Praesepe, which is in good agreement with the literature. We then systematically vary three parameters which determine the dependence of our stellar wind torque law on Rossby number in the saturated and unsaturated regimes, and the location of the transition between the two. By minimising $τ^2$, we find best-fit values for each parameter. These values vary slightly between clusters, mass determinations and initial conditions, highlighting the precision of $τ^2$ and its potential for constraining REMs, gyrochronology, and understanding of stellar physics. Our resulting REMs, which implement the best-possible fitting form of a broken power-law torque, are statistically improved on previous REMs using similar formulations, but still do not simultaneously describe the observed rotation distributions of the lowest masses, which have both slow and fast rotators by the Praesepe age, and the shape of the converged sequence for higher masses. Further complexity in the REMs is thus required to accurately describe the data.
description: 18 pages, 10 figures. Accepted for publication in ApJ
A Deep HST Study of the Globular Cluster NGC 6397: Reduction Methods
Creators: name: Anderson, Jay
name: King, Ivan R.
name: Richer, Harvey B.
name: Fahlman, Gregory G.
name: Hansen, Brad M. S.
name: Hurley, Jarrod
name: Kalirai, Jasonjot S.
name: Rich, R. Michael
name: Stetson, Peter B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe here the reduction methods that we developed to study the faintest red dwarfs and white dwarfs in an outer field of NGC6397, which was observed by \hst for 126 orbits in 2005. The particular challenge of this data set is that the faintest stars are not readily visible in individual exposures, so special care must be taken to combine the information in all the exposures in order to identify and measure them. Unfortunately, it is hard to find the faintest stars without also finding a large number of faint galaxies, so we developed specialized tools to distinguish between the point-like stars and the barely resolved galaxies. We found that artificial-star tests, while obviously necessary for completeness determination, can also play an important role in helping us optimize our finding and measuring algorithms. Although this paper focuses on this data set specifically, many of the techniques are new and might find application in other work, particularly when a large number of images is available for a single field.
description: 35 pages, preprint style
XIX АСРНИНГ ИККИНЧИ ЯРМИДА САМАРҚАНД ВИЛОЯТИДА ТИББИЙ АҲВОЛ (ЎЗМА ҲУЖЖАТЛАРИ АСОСИДА)
Creators: name: Жонибек Шодиевич Бўтаев
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: округ
терапевтик
фармацевт
жарроҳ
фельдшер
ветеринар
доя
дорихона
табобат
акушер
амбулатория
эмлаш

description: Мазкур мақолада XIX асрнинг иккинчи ярмида Самарқанд вилояти тиббий аҳволи ҳақида сўз юритилиб, Россия томонидан вилоят истило қилингач барча соҳаларда бўлгани сингари тиббиѐт тизимида ҳам бир қатор ўзгаришлар содир бўлганлиги, маҳаллий аҳолининг халқ табобатидан ташқари замонавий тиббиѐт ютуқлардан фойдалана бошлагани, ўша даврдаги санитарик ва эпидемиологик аҳвол, шифохоналар фаолияти ва аҳволи, тиббий мутахассислар таркиби ва уларга мурожаат қилганлар сонлари тўғрисида маълумотлар келтириб ўтилган. Шунингдек, вилоят Зарафшон округи деб аталган даврда аҳолининг рус тиббий хизматидан фойдаланиш даражаси, тиббиѐт вакиллари таркиби ва фаолияти, уларга ажратилган йиллик маблағлар архив манбалари ва статистик ҳисоботлар орқали таҳлил қилиб чиқилган. Округ кейинчалик вилоятга айлантирилгач, тиббиѐт тизимида ўтказилган ислоҳотлар ва уларнинг мазмун-моҳияти ҳамда вилоятдаги дорихоналар фаолияти статистик рақамларлар орқали ўлканинг бошқа вилоятлари билан таққосланиб баҳо берилган
КИБЕР ОЛАМИДАГИ МУТААССИБЛИКНИНГ ЁШЛАР МАЪНАВИЯТИГА ХУРУЖИ ВА ОҚИБАТЛАРИ
Creators: name: Сардор Полванов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Мутаассиблик
ташкилот
терроризм
экстремизм
фундаментализм
интернет
глобаллашув

description: Ушбу мақолада мутаассиблик тушунчаси, унинг моҳияти, мутаассиблик оркали келиб чиққан ҳаракатлар, уларнинг интернет тармоғи орқали амалга ошираѐтган ҳаракатлари ѐритиб берилган
Computational catalyst discovery: Active classification through myopic multiscale sampling
Creators: name: Tran, Kevin
name: Neiswanger, Willie
name: Broderick, Kirby
name: Xing, Erix
name: Schneider, Jeff
name: Ulissi, Zachary W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The recent boom in computational chemistry has enabled several projects aimed at discovering useful materials or catalysts. We acknowledge and address two recurring issues in the field of computational catalyst discovery. First, calculating macro-scale catalyst properties is not straight-forward when using ensembles of atomic-scale calculations (e.g., density functional theory). We attempt to address this issue by creating a multiscale model that estimates bulk catalyst activity using adsorption energy predictions from both density functional theory and machine learning models. The second issue is that many catalyst discovery efforts seek to optimize catalyst properties, but optimization is an inherently exploitative objective that is in tension with the explorative nature of early-stage discovery projects. In other words: why invest so much time finding a "best" catalyst when it is likely to fail for some other, unforeseen problem? We address this issue by relaxing the catalyst discovery goal into a classification problem: "What is the set of catalysts that is worth testing experimentally?" Here we present a catalyst discovery method called myopic multiscale sampling, which combines multiscale modeling with automated selection of density functional theory calculations. It is an active classification strategy that seeks to classify catalysts as "worth investigating" or "not worth investigating" experimentally. Our results show a ~7-16 times speedup in catalyst classification relative to random sampling. These results were based on offline simulations of our algorithm on two different datasets: a larger, synthesized dataset and a smaller, real dataset.
description: 13 pages, 6 figures, submitted to Journal of Chemical Physics
Majorana bound states in topological insulators without a vortex
Creators: name: Legg, Henry F.
name: Loss, Daniel
name: Klinovaja, Jelena
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider a three-dimensional topological insulator (TI) wire with a non-uniform chemical potential induced by gating across the cross-section. This inhomogeneity in chemical potential lifts the degeneracy between two one-dimensional surface state subbands. A magnetic field applied along the wire, due to orbital effects, breaks time-reversal symmetry and lifts the Kramers degeneracy at zero-momentum. If placed in proximity to an $s$-wave superconductor, the system can be brought into a topological phase at relatively weak magnetic fields. Majorana bound states (MBSs), localized at the ends of the TI wire, emerge and are present for an exceptionally large region of parameter space in realistic systems. Unlike in previous proposals, these MBSs occur without the requirement of a vortex in the superconducting pairing potential, which represents a significant simplification for experiments. Our results open a pathway to the realisation of MBSs in present day TI wire devices.
description: Main text: 5 pages + 4 figures. Supplemental material: 8 pages + 5 figures
DISPERS TO'LDIRUVCHILI POLIMER-POLIMER KOMPLEKSLAR ASOSIDAGI KOMPOZITSION MATERIALLAR
Creators: name: G. I. Mukhamedov
name: A. D. Kurbanova
name: K.U. Komilov
name: A.M. Eshmatov
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: karbomido-formaldegid smolasi (KFS)
karboksimetilselyulozaning natriyli tuzi (KMS Na)
interpolimer kompleks (IPK)
fosfogips (FG)
kompozitsion material (KM).

description: Maqolada karbamido-formaldegid smolasi (KFS) va karboksimetilselyulozaning natriyli tuzi (KMS Na) asosida olingan polimer-polimer kompleksga (PPK) dispers to‘ldiruvchilar (fosfogips-FG va qum) qo‘shib kompozitsion materiallar olish ko‘rsatib berilgan. PPK ga dispers to‘ldiruvchilar qo‘shib olingan kompozitsion materialning ko‘pgina xossalari: fizik – kimyoviy, mexanik xossalari o‘zgarib ketishi ko’rsatib o’tilgan. Olingan kompozitsion material, elektron mikroskop orqali o’rganilib, undagi g’ovaklarni joylashishi, o’lchamlari ko’rsatib berilgan. Bundan tashqari olingan kompozitsion material infraqizil spektrofotometrik va termogravimetrik usullarda tadqiqot qilingan. Unda funktsional guruhlarni joylashishini o’zgarishlari ko’satib o’tilgan
ATOM REAKTORLARNING TURLARI VA ULARNING RADIATSION XAVFSIZLIGINI INNOVATSION TEXNOLOGIYALAR ASOSIDA O'QITISH METODIKASI
Creators: name: Umidjon Kamoliddinovich Ravshanov
name: Fattiloyevich, Sardor Zokirovich
name: Badriddinov, Ravshan Kamolidinovich
name: Mirjalol Kahramonovich Juraev
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Innovatsion
pedagogik
reaktorlar
atom
intensiv
neytron
eksport
ob'yekt
konseptsiya
strategiyasi

description: Rivojlanayotgan mamlakatimizda olib borilayotgan ta‘limdagi islohotlarni to‘g‘ri anglab har bitta yetishib kelayotgan yosh avlod ongida xavfsiz energiya sifatida atom elektr stansiyalarini pedagogik texnologiyalar orqali yetkaza olsak, kelajakda bizda kutilayotgan yangilikga nisbatdan qarashlarni o‘zgartira olamiz. Maqolada fan texnika rivojidagi atom reaktorlarning ishlashi,turlari,xavfsizligi haqida so‘z boradi
ЯНГИЛАНАЁТГАН ЎЗБЕКИСТОНДА ДАВР РУҲИ ВА АҲОЛИ МЕНТАЛИТЕТИ ЎЗГАРИШЛАРИ ДИНАМИКАСИ
Creators: name: Раушана Курбанбаевна Курбаниязова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: юксалиш даври
давр руҳи
менталитет
тафаккур тарзи
феъл-атвор
иқтисодий фаолият
қадриятлар
барқарорлик

description: Ушбу мақолада Янгиланаѐтган Ўзбекистонда давр руҳига ҳамоҳанг аҳоли менталитетининг ўзгариб бориши, жамият онгу ва тафаккури мазмунида, инсонларнинг феъл-атворида, саъй-ҳаракатларида янги қадриятлар қарор топаѐтгани, ҳаѐтга муносабатлар тизими ўзгараѐтганлиги ѐритиб берилган
ЎЗБЕК ЛЕКСИКОГРАФИЯСИ ТАРИХИДАН
Creators: name: Абдишукур Мусаевич Шофқоров
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: тилшунослик
лексикология
лексикография
луғат
луғат турлари
луғат тузиш.

description: Мақолада, ўзбек тилшунослигида лексикографиянинг шаклланиши, тараққиѐт босқичлари ҳақида фикр юритилади. Шунингдек, луғатлар ва уларнинг турлари, луғатларнинг аҳамияти ѐритилган.
ФАРИДУДДИН АТТОР ЮСУФ ҲАМАДОНИЙ ҲАҚИДА
Creators: name: Гулчеҳра Неъматовна Наврўзова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Аттор
“Мантиқ ут-тайр”
Юсуф Ҳамадоний
талаб
истиғно
“Илоҳийнома” ишқ
англаш
тасаввуф
комиллик

description: Мақолада буюук мутафаккир Фаридуддин Аттор(1145-1221)нинг “Мантиқ ут-тайр” ва “Илоҳийнома” асарларида Хожагон таълимотининг асосчиси Абдулхолиқ Ғиждувоний ва Яссавия тариқатини асослаган Аҳмад Яссавийларнинг устози Юсуф Ҳамадоний (1048, Ҳамадоннинг Бузанжирд қишлоғи – 1141, Марв Туркманистон) ҳақида ѐзган ғоялари фалсафий таҳлил этилган.
Photometric Redshifts in the W-CDF-S and ELAIS-S1 Fields Based on Forced Photometry from 0.36 -- 4.5 Microns
Creators: name: Zou, Fan
name: Yang, Guang
name: Brandt, W. N.
name: Ni, Qingling
name: Bauer, Franz E.
name: Covone, Giovanni
name: Lacy, Mark
name: Napolitano, Nicola R.
name: Nyland, Kristina
name: Paolillo, Maurizio
name: Radovich, Mario
name: Spavone, Marilena
name: Vaccari, Mattia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The W-CDF-S and ELAIS-S1 fields will be two of the LSST Deep Drilling fields, but the availability of spectroscopic redshifts within these two fields is still limited on deg^2 scales. To prepare for future science, we use EAZY to estimate photometric redshifts (photo-zs) in these two fields based on forced-photometry catalogs. Our photo-z catalog consists of ~0.8 million sources covering 4.9 deg^2 in W-CDF-S and ~0.8 million sources covering 3.4 deg^2 in ELAIS-S1, among which there are ~0.6 (W-CDF-S) and ~0.4 (ELAIS-S1) million sources having signal-to-noise-ratio (SNR) > 5 detections in more than 5 bands. By comparing photo-zs and available spectroscopic redshifts, we demonstrate the general reliability of our photo-z measurements. Our photo-z catalog is publicly available at \doi{10.5281/zenodo.4603178}.
description: 6 pages, 2 figures
Reflection principle characterizing groups in which unconditionally closed sets are algebraic
Creators: name: Dikranjan, Dikran
name: Shakhmatov, Dmitri
Publisher: name: arXiv
Year: 2007
Subjects: subject: Group Theory (math.GR)
subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 22A05; 54A10

description: We give a necessary and sufficient condition, in terms of a certain reflection principle, for every unconditionally closed subset of a group G to be algebraic. As a corollary, we prove that this is always the case when G is a direct product of an Abelian group with a direct product (sometimes also called a direct sum) of a family of countable groups. This is the widest class of groups known to date where the answer to the 63 years old problem of Markov turns out to be positive. We also prove that whether every unconditionally closed subset of G is algebraic or not is completely determined by countable subgroups of G.
description: 14 pages
ХИТОЙ ТАСВИРИЙ САНЪАТИНИНГ МАРКАЗИЙ ОСИЁ ТАСВИРИЙ ВА АМАЛИЙ САНЪАТИГА ТАЪСИРИ
Creators: name: Ваҳобжон Содиқович Буваев
name: Абдувоҳид Абдуваҳобович Исақов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Мин санъати
Темурийлар санъати
миниатюра
нафис санъат
ўзаро алмашинув
тасвирий образ
жанрлар
тасвирий услуб
анъанавий композиция
тасвирий элементлар

description: Мазкур мақолада шу каби бетакрор тасвирий ва амалий санъат мактабларининг шаклланиши жараѐнларида ўзаро алмашинувларнинг таъсирини ўрганилди
Self-similar extrapolation of nonlinear problems from small-variable to large-variable limit
Creators: name: Yukalov, V. I.
name: Yukalova, E. P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Complicated physical problems usually are solved by resorting to perturbation theory leading to solutions in the form of asymptotic series in powers of small parameters. However, finite, and even large values of the parameters often are of the main physical interest. A method is described for predicting the large-variable behavior of solutions to nonlinear problems from the knowledge of only their small-variable expansions. The method is based on self-similar approximation theory resulting in self-similar factor approximants. The latter can well approximate a large class of functions, rational, irrational, and transcendental. The method is illustrated by several examples from statistical and condensed matter physics, where the self-similar predictions can be compared with the available large-variable behavior. It is shown that the method allows for finding the behavior of solutions at large variables when knowing just a few terms of small-variable expansions. Numerical convergence of approximants is demonstrated.
description: 14 pages
ҒАЛЛА ВА ТАКРОРИЙ ЭКИЛГАН КАРТОШКАДА ИЛДИЗ КЕМИРУВЧИ ЗАРАРКУНАНДАЛАРГА ҚАРШИ ИНСЕКТИЦИДЛАРНИ САМАРАДОРЛИГИ
Creators: name: Ж. У. Давронов
name: М. М. Аблазова
name: А. М. Худойқулов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Илдиз кемирувчи тунламлар
кузги ғалла экинлари
илдиз бўғзи
ниҳоллар
тугунаклар
жинсий феромонли тутқичлар
вариантлар
биологик самарадорлик

description: Ушбу мақолада илдиз кемирувчи тунламлардан кузги тунлам (Agrotis segetum Den. et Shiff) нинг ғалла майдонидаги тарқалиши, зарари ва уларга қарши Делта 2,5% эм.к. ва Кинмикс 5% эм.к. кимѐвий препаратларининг самарадорлигини аниқлаш мақсадида Тошкент вилояти Юқори Чирчиқ тумани “Фарадис хирмони”фермер хўжалигида тажриба ва кузатув ишлари олиб борилди ва олинган натижалар асосида хулоса ва таклифлар берилган
YOSH KURASHCHILARNING BOSHLANG’ICH TAYYORGARLIK BOSQICHIDA TEXNIK-TAKTIK HARAKATLARINING TAHLILI
Creators: name: Satipov, Bekzod
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: kurash sport turi
kurash texnikasi
kurashchi
texnik-taktik harakat
qulay dinamik vaziyat
yuqori malakali kurashchi
texnik-taktik mahorat

description: Ushbu maqolada yosh kurashchilarning boshlang‟ich tayyorgarlik bosqichida texnik-taktik harakatlarining tahlili to‟g‟risida fikr yuritiladi