cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Short-lived Nuclei in the Early Solar System: Possible AGB Sources
Creators: name: Wasserburg, G. J.
name: Busso, M.
name: Gallino, R.
name: Nollett, K. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We review abundances of short-lived nuclides in the early solar system (ESS) and the methods used to determine them. We compare them to the inventory for a uniform galactic production model. Within a factor of two, observed abundances of several isotopes are compatible with this model. I-129 is an exception, with an ESS inventory much lower than expected. The isotopes Pd-107, Fe-60, Ca-41, Cl-36, Al-26, and Be-10 require late addition to the solar nebula. Be-10 is the product of particle irradiation of the solar system as probably is Cl-36. Late injection by a supernova (SN) cannot be responsible for most short-lived nuclei without excessively producing Mn-53; it can be the source of Mn-53 and maybe Fe-60. If a late SN is responsible for these two nuclei, it still cannot make Pd-107 and other isotopes. We emphasize an AGB star as a source of nuclei, including Fe-60 and explore this possibility with new stellar models. A dilution factor of about 4e-3 gives reasonable amounts of many nuclei. We discuss the role of irradiation for Al-26, Cl-36 and Ca-41. Conflict between scenarios is emphasized as well as the absence of a global interpretation for the existing data. Abundances of actinides indicate a quiescent interval of about 1e8 years for actinide group production in order to explain the data on Pu-244 and new bounds on Cm-247. This interval is not compatible with Hf-182 data, so a separate type of r-process is needed for at least the actinides, distinct from the two types previously identified. The apparent coincidence of the I-129 and trans-actinide time scales suggests that the last actinide contribution was from an r-process that produced actinides without fission recycling so that the yields at Ba and below were governed by fission.
description: 92 pages, 14 figure files, in press at Nuclear Physics A
A complex of live/work units modelled on Japanese spatial concepts in the Downtown Eastside, Vancouver
Creators: name: Levis, Ryan James
Publisher: name: University of British Columbia
Year: 2009

description: My project investigated the spatial concepts of Japanese architecture to see if they offer a particular insight into the design of the emerging model of live/work. The search embodied in my directed study and the subsequent design, therefore, was testing this hypothesis. Among many other concepts, Japanese spatial sensibilities include harmony in crowded environs, expansion of experiential space over limited physical distances, and tripartite physical thought. I felt that in the context of evolving models of dwelling and a desired urban densification, we could learn from nations that have already dealt with similar situations. The design addresses the complexity of the social fabric of the Downtown Eastside by taking a Japanese approach to the nature of public and private space. Like an upward spiral of Kyoto storefront houses, the units cluster around a "vertical street," meant to be an extension of Dunlevy Street. During normal business hours, the public may enter the plaza level, participate in the "vertical street" and interact with the people living and working in the units. The transition between the public and private realms is thereby multi-layered. The visitor passes through an indoor/outdoor atrium space, along the "vertical street" and into the units through forecourts and implied work zones fronting the "vertical street." This "onion-like" approach to a layering of public to private space is echoed in the outer skins of the building with a double facade concept. As the atrium space creates an inside/outside ("Ma") zone for the complex itself, the double facade creates an inside/outside zone for the units themselves. This "Ma" zone can function as an extension of the inside or as a room unto itself. The sequential layering of units as discrete "gates" along the "vertical street" is another Japanese spatial idea. The passage along this "street" becomes a series of events culminating at the rooftop gallery and sculpture garden, where the experience of the multi-layered north view is realized. The events along this route and the destination provide the impetus for movement along the route itself. The completed design integrates key Japanese spatial concepts into a western context and location, resulting in a unique model for the design of live/work: one that creates community with personal privacy, yet allows commercial interaction by actively engaging the public.
Fermionic Sign Structure of High-order Feynman diagrams in a Many-fermion System
Creators: name: Wang, Bao-Zong
name: Hou, Peng-Cheng
name: Deng, Youjin
name: Haule, Kristjan
name: Chen, Kun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The sign cancellation between scattering amplitudes makes fermions different from bosons. We systematically investigate Feynman diagrams' fermionic sign structure in a representative many-fermion system---a uniform Fermi gas with Yukawa interaction. We analyze the role of the crossing symmetry and the global gauge symmetry in the fermionic sign cancellation. The symmetry arguments are then used to identify the sign-canceled groups of diagrams. Sign-structure analysis has two applications. Numerically, it leads to a cluster diagrammatic Monte Carlo algorithm for fast diagram evaluations. The new algorithm is about $10^5$ times faster than the conventional approaches in the sixth order. Furthermore, our analysis provides important hints in constructing the relevant effective field theory for many-fermion systems.
A comprehensive study of GRB 070125, a most energetic gamma ray burst
Creators: name: Chandra, Poonam
name: Cenko, S. Bradley
name: Frail, Dale
name: Chevalier, Roger
name: Macquart, Jean-Pierre
name: Kulkarni, Shri
name: Bock, Douglas C. -J.
name: Bertoldi, Frank
name: Kasliwal, Mansi
name: Fox, Derek B.
name: Price, Paul A.
name: Berger, Edo
name: Soderberg, Alicia
name: Harrison, Fiona A.
name: Gal-Yam, Avishay
name: Ofek, Eran
name: Rau, Arne
name: Schmidt, Brian P.
name: Cameron, P. Brian
name: Cowie, Lennox L.
name: Cowie, Antoinette
name: Dopita, Michael
name: Peterson, Bruce
name: Penprase, Bryan E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a comprehensive multiwavelength analysis of the bright, long duration gamma-ray burst GRB 070125, comprised of observations in $γ$-ray, X-ray, optical, millimeter and centimeter wavebands. Simultaneous fits to the optical and X-ray light curves favor a break on day 3.78, which we interpret as the jet break from a collimated outflow. Independent fits to optical and X-ray bands give similar results in the optical bands but shift the jet break to around day 10 in the X-ray light curve. We show that for the physical parameters derived for GRB 070125, inverse Compton scattering effects are important throughout the afterglow evolution. While inverse Compton scattering does not affect radio and optical bands, it may be a promising candidate to delay the jet break in the X-ray band. Radio light curves show rapid flux variations, which are interpreted as due to interstellar scintillation, and are used to derive an upper limit of $2.4 \times 10^{17}$ cm on the radius of the fireball in the lateral expansion phase of the jet. Radio light curves and spectra suggest a high synchrotron self absorption frequency indicative of the afterglow shock wave moving in a dense medium. Our broadband modeling favors a constant density profile for the circumburst medium over a wind-like profile ($R^{-2}$). However, keeping in mind the uncertainty of the parameters, it is difficult to unambiguously distinguish between the two density profiles. Our broadband fits suggest that \event is a burst with high radiative efficiency ($> 60 %$).
description: 50 pages, 33 figures, sty file included, Appeared in 20 Aug 2008 edition of Astrophysical Journal
Searching for new observational signatures of the dynamical evolution of star clusters
Creators: name: Bhat, B.
name: Lanzoni, B.
name: Ferraro, F. R.
name: Vesperini, E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a numerical study, based on Monte Carlo simulations, aimed at defining new empirical parameters measurable from observations and able to trace the different phases of star cluster dynamical evolution. As expected, a central density cusp, deviating from the King model profile, develops during the core collapse (CC) event. Although the slope varies during the post-CC oscillations, the cusp remains a stable feature characterizing the central portion of the density profile in all post-CC stages. We then investigate the normalized cumulative radial distribution (nCRD) drawn by all the cluster stars included within one half the tridimensional half-mass radius (R<0.5 rh), finding that its morphology varies in time according to the cluster's dynamical stage. To quantify these changes we defined three parameters: A5, the area subtended by the nCRD within 5% of the half-mass radius, P5, the value of the nCRD measured at the same distance, and S2.5, the slope of the straight line tangent to the nCRD measured at R=2.5% rh. The three parameters evolve similarly during the cluster's dynamical evolution: after an early phase in which they are essentially constant, their values rapidly increase, reaching their maximum at the CC epoch and slightly decreasing in the post-CC phase, when their average value remains significantly larger than the initial one, in spite of some fluctuations. The results presented in the paper suggest that these three observable parameters are very promising empirical tools to identify the star cluster's dynamical stage from observational data.
description: 18 pages, 11 figures, accepted for publication in ApJ
ЙЎЛ БЎЛАКЛАРИНИНГ ҲАРАКАТЛАНИШ ХАВФСИЗЛИГИГА ТАЪСИРИНИ ТАҲЛИЛ ҚИЛИШ
Creators: name: Ravshanov, Farrux
name: Turushev, Sanjar
name: Umirov, Ilhom
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: йўл-транспорт ҳодисаси
йўл бўлаги
йўл белгилари
йўл жихозлари
қатнов қисми
автомобил
йўловчи
пиѐда

description: Ушбу мақолада йўл-транспорт ҳодисаларининг олдини олиш мақсадида йўл бўлакларининг ҳаракатланиш хавфсизлигига таъсири реал йўл шароитида ўрганилган ва таҳлил этилган. Ҳаракат хавфсизлигини таъминлаш учун ушбу йўл бўлаги учун тавсиялар ишлаб чиқилган
Dark Energy From Vacuum Fluctuations
Creators: name: Djorgovski, S. G.
name: Gurzadyan, V. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe briefly a novel interpretation of the physical nature of dark energy (DE), based on the vacuum fluctuations model by Gurzadyan & Xue, and describe an internally consistent solution for the behavor of DE as a function of redshift. A key choice is the nature of the upper bound used for the computation of energy density contributions by vacuum modes. We show that use of the comoving horizon radius produces a viable model, whereas use of the proper horizon radius is inconsistent with the observations. After introduction of a single phenomenological parameter, the model is consistent with all of the curently available data, and fits them as well as the standard cosmological constant model, while making testable predictions. While some substantial interpretative uncertainties remain, future developments of this model may lead to significant new insights into the physical nature of DE.
description: To appear in Proc. UCLA Conference "Dark Matter 2006", eds. D. Cline et al., Nuclear Pysics B, in press (2006); 5 pages
Improving estimates of the growth rate using galaxy-velocity correlations: a simulation study
Creators: name: Turner, Ryan J.
name: Blake, Chris
name: Ruggeri, Rossana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an improved framework for estimating the growth rate of large-scale structure, using measurements of the galaxy-velocity cross-correlation in configuration space. We consider standard estimators of the velocity auto-correlation function, $ψ_1$ and $ψ_2$, the two-point galaxy correlation function, $ξ_{gg}$, and introduce a new estimator of the galaxy-velocity cross-correlation function, $ψ_3$. By including pair counts measured from random catalogues of velocities and positions sampled from distributions characteristic of the true data, we find that the variance in the galaxy-velocity cross-correlation function is significantly reduced. Applying a covariance analysis and $χ^2$ minimisation procedure to these statistics, we determine estimates and errors for the normalised growth rate $fσ_8$ and the parameter $β= f/b$, where $b$ is the galaxy bias factor. We test this framework on mock hemisphere datasets for redshift $z < 0.1$ with realistic velocity noise constructed from the L-PICOLA simulation code, and find that we are able to recover the fiducial value of $fσ_8$ from the joint combination of $ψ_1$ + $ψ_2$ + $ψ_3$ + $ξ_{gg}$, with 15\% accuracy from individual mocks. We also recover the fiducial $fσ_8$ to within 1$σ$ regardless of the combination of correlation statistics used. When we consider all four statistics together we find that the statistical uncertainty in our measurement of the growth rate is reduced by $59\%$ compared to the same analysis only considering $ψ_2$, by $53\%$ compared to the same analysis only considering $ψ_1$, and by $52\%$ compared to the same analysis jointly considering $ψ_1$ and $ψ_2$.
description: 11 pages, 7 figures, accepted for publication in MNRAS
ЎЗБЕК БОЛАЛАР НУТҚИГА ДОИР МАТНЛАРДА ЛАКУНА
Creators: name: Мадинабону Зоҳидова
name: Дилафруз Асқарова
name: Дилафруз Махамадалиевна Юлдашева
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: лакуна
нутқ
тушунча
маданият
педагогика

description: Мақолада ўзбек болалар нутқига доир матнларда қўлланилган лакуналарнинг ўзига хос хусусиятлари ѐритилган
Cosmology, the present landscape: Cosmic tension (?) and Early Dark Energy
Creators: name: Kamionkowski, Marc
Publisher: name: Zenodo
Year: 2021
Subjects: Cosmiology - Dark Energy

description: Opening Plenary Talk at the
 "XIX International Workshop on Neutrino Telescopes"
 on line - 18-26 February, 2021
description: Key Note Speaker
Efficiency and time resolution of monolithic silicon pixel detectors in SiGe BiCMOS technology
Creators: name: Iacobucci, G.
name: Paolozzi, L.
name: Valerio, P.
name: Moretti, T.
name: Cadoux, F.
name: Cardarelli, R.
name: Cardella, R.
name: Débieux, S.
name: Favre, Y.
name: Ferrere, D.
name: Gonzalez-Sevilla, S.
name: Gurimskaya, Y.
name: Kotitsa, R.
name: Magliocca, C.
name: Martinelli, F.
name: Milanesio, M.
name: Münker, M.
name: Nessi, M.
name: Picardi, A.
name: Saidi, J.
name: Rücker, H.
name: Pinto, M. Vicente Barreto
name: Zambito, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A monolithic silicon pixel detector prototype has been produced in the SiGe BiCMOS SG13G2 130 nm node technology by IHP. The ASIC contains a matrix of hexagonal pixels with pitch of approximately 100 $μ$m. Three analog pixels were calibrated in laboratory with radioactive sources and tested in a 180 GeV/c pion beamline at the CERN SPS. A detection efficiency of $\left(99.9^{+0.1}_{-0.2}\right)$% was measured together with a time resolution of $(36.4 \pm 0.8)$ps at the highest preamplifier bias current working point of 150 $μ$A and at a sensor bias voltage of 160 V. The ASIC was also characterized at lower bias voltage and preamplifier current.
YOSH FUTBOLCHILARNI TEXNIK TAYYORGARLIGINI OSHIRISHDA INNOVATSION TEXNOLOGIYALARNING AHAMIYATI
Creators: name: Ataniyazov, Bekzod Ilhamovich
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Yosh futbolchi
tezkor-kuch
sifat
usuliyat
rivojlantirish
trenirovka
ta‟sir vaqti
tezkorlik qobiliyati
yuklama
mashg‟ulot

description: “Yosh futbolchilarni texnik tayyorgarligini oshirishda innovatsion texnologiyalarning ahamiyati” mavzusi bo„yicha maqola innovatsion texnologiyalar asosida tayyorlangan. Mavzu yuzasidan keys, interfaol usullar, turli dars ishlanmalari, test hamda nazorat savollari ishlab chiqilgan. Ishida yosh futbolchilarning texnik harakatlarini zamonaviy texnik vositalar orqali takomillashtirish bo„yicha tavsiyalar berilgan.
ALMA View of the Infalling Envelope around a Massive Protostar in S255IR SMA1
Creators: name: Liu, Sheng-Yuan
name: Su, Yu-Nung
name: Zinchenko, Igor
name: Wang, Kuo-Song
name: Meyer, Dominique M. -A.
name: Wang, Yuan
name: Hsieh, I-Ta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The massive young stellar object S255IR NIRS3 embedded in the star forming core SMA1 has been recently observed with a luminosity burst, which is conjectured as a disc-mediated variable accretion event. In this context, it is imperative to characterize the gas properties around the massive young stellar object. With this in mind, we carried out high angular resolution observations with the Atacama Large Millimeter and submillimeter Array and imaged the 900 $μm$ dust continuum and the CH$_3$CN $J$=19$-$18 $K$=0$-$10 transitions of S255IR SMA1. The integrated CH$_3$CN emission exhibits an elongated feature with an extent of 1800 au in the northwest-southeast direction at a position angle of 165 degree, which is nearly perpendicular to the bipolar outflow. We confirm the presence of dense (a few $\times 10^{9}$ cm$^{-3}$) and hot ($\sim$ 400 K) gas immediately surrounding the central protostar. The CH$_3$CN emission features a velocity gradient along the elongated ridge and by modelling the gas kinematics based on features in the position-velocity diagram, we infer that the gas is best described by a flattened rotating infalling envelope (or pseudo-disc). A mass infall rate of a few $\times$ 10$^{-4}$ solar-mass per year is derived. If there exists a putative Keplerian disc directly involved in the mass accretion onto the star and jet/outflow launching, it is likely smaller than 125 au and unresolved by our observations. We show qualitative resemblances between the gas properties (such as density and kinematics) in 255IR SMA1 inferred from our observations and those in a numerical simulation particularly tailored for studying the burst mode of massive star formation.
description: 23 pages, 11 figures, accepted for publication in the Astrophysical Journal
A multi-block infrastructure for three-dimensional time-dependent numerical relativity
Creators: name: Schnetter, Erik
name: Diener, Peter
name: Dorband, Ernst Nils
name: Tiglio, Manuel
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe a generic infrastructure for time evolution simulations in numerical relativity using multiple grid patches. After a motivation of this approach, we discuss the relative advantages of global and patch-local tensor bases. We describe both our multi-patch infrastructure and our time evolution scheme, and comment on adaptive time integrators and parallelisation. We also describe various patch system topologies that provide spherical outer and/or multiple inner boundaries. We employ penalty inter-patch boundary conditions, and we demonstrate the stability and accuracy of our three-dimensional implementation. We solve both a scalar wave equation on a stationary rotating black hole background and the full Einstein equations. For the scalar wave equation, we compare the effects of global and patch-local tensor bases, different finite differencing operators, and the effect of artificial dissipation onto stability and accuracy. We show that multi-patch systems can directly compete with the so-called fixed mesh refinement approach; however, one can also combine both. For the Einstein equations, we show that using multiple grid patches with penalty boundary conditions leads to a robustly stable system. We also show long-term stable and accurate evolutions of a one-dimensional non-linear gauge wave. Finally, we evolve weak gravitational waves in three dimensions and extract accurate waveforms, taking advantage of the spherical shape of our grid lines.
description: 18 pages. Some clarifications added, figure layout improved
Limit distributions of two-dimensional quantum walks
Creators: name: Watabe, Kyohei
name: Kobayashi, Naoki
name: Katori, Makoto
name: Konno, Norio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: One-parameter family of discrete-time quantum-walk models on the square lattice, which includes the Grover-walk model as a special case, is analytically studied. Convergence in the long-time limit $t \to \infty$ of all joint moments of two components of walker's pseudovelocity, $X_t/t$ and $Y_t/t$, is proved and the probability density of limit distribution is derived. Dependence of the two-dimensional limit density function on the parameter of quantum coin and initial four-component qudit of quantum walker is determined. Symmetry of limit distribution on a plane and localization around the origin are completely controlled. Comparison with numerical results of direct computer-simulations is also shown.
description: v3: REVTeX4, 20 pages, 6 figures, minor corrections made for publication
18-20 YOSHLI KURASHCHILARNING TEZKOR-KUCH SIFATLARINI RIVOJLANTIRISH USLUBIYATI
Creators: name: Gulyor Komiljon Qizi Atajonova
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: kurash
tezkor-kuch
sifat
usuliyat
rivojlantirish
trenirovka
Antropometrik o’lchovlar
tibbiy nazorat
ta’sir vaqti
tezkorlik qobiliyati
yuklama
mashg’ulot

description: Ushbu maqolada 18-20 yoshli kurashchilarning tezkor-kuch sifatlarini rivojlantirishda ularning maxsus tezkor-kuch sifatlarini, ularni rivojlantirish usuliyatini aniqlashda o’quv-trenirovkalardagi mashq yuklamalarini ishlab chiqish va ularni rivojlantirish usuliyati bo’yicha trenirovka jarayoni o’rganish yoritilgan
Leveraging MLflow for Efficient Evaluation and Deployment of Large Language Models
Creators: name: Berberi, Lisana
name: Kozlov, Valentin
name: Alibabaei, Khadijeh Fahimeh
name: Esteban Sanchis, Borja
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2024
Subjects: LLM
MLflow
evaluation

description: In recent years, Large Language Models (LLMs) have become powerful tools in the machine learning (ML) field, including features of natural language processing (NLP) and code generation. The employment of these tools often faces complex processes, starting from interacting with a variety of providers to fine-tuning models of a certain degree of appropriateness to meet the project’s needs.
This work explores in detail using MLflow [1] in deploying and evaluating two notable LLMs: Mixtral[2] from MistralAI and Meta-Llama (llama) [3] from Meta, both available as open-source models in the HuggingFace portal. The focus lies on enhancing inference efficiency, specifically emphasising the fact that DBRX has better throughput than traditional models of similar scale.
Hence, MLflow offers a unified interface for interacting with various LLM providers through the Deployments Server (previously known as “MLflow AI Gateway”) [4], which streamlines the deployment process. Further, with standardised evaluation metrics, we present a comparative analysis between Mixtral and Llama.
MLflow's LLM Evaluation tools are designed to address the unique challenges of evaluating LLMs. Unlike traditional models, LLMs often lack a single ground truth, making their evaluation more complex.
MLflow allows customers to use a bundle of tools and features that are specifically tailored to deal with difficulties arising from integrating LLMs in a comprehensive manner. The MLflow Deployments Server serves as the central location, eliminating the need to juggle multiple provider APIs and simplifying integration with self-hosted models.
We plan to implement this solution using the MLflow tracking server deployed in the AI4eosc project [5] as a showcase.
In conclusion, this contribution seeks to offer insights into the efficient deployment and evaluation of LLMs using MLflow, with a focus on optimising inference efficiency through a unified user interface. With MLflow capabilities, developers and data scientists can navigate through integrating LLMs into their applications easily and effectively, unlocking their maximum potential for revolutionary AI-driven solutions.

[1] https://mlflow.org
[2] https://huggingface.co/mistralai
[3] https://huggingface.co/meta-llama
[4] https://mlflow.org/docs/latest/llms/index.html
[5] https://ai4eosc.eu
O'ZBEKISTON RESPUBLIKASIDA JISMONIY MADANIYAT TIZIMI RIVOJLANISHINING UMUMIY TAVSIFI
Creators: name: San’at Raximbaevich Kenjayev
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: jismoniy madaniyat
tizim
umumiy tushincha
Qonun
farmon
mustaqillik
rivojlanish.

description: Ushbu ishida O‘zbekiston Respublikasida jismoniy madaniyat tizimining jamiyatda tutgan o‘rni, maqsad va vazifalari, yo‘nalishlari, rivojlanish tarixi, sobiq ittifoq davrida va mustaqillik yillarida jismoniy madaniyat tizimini rivojlanish xususiyatlari, mustsqillik yillarida jismoniy madaniyat tizimida olib borilgan islohatlar va ularning ijobiy samarasi keng ochib berilgan.
Indication of a Pulsar Wind Nebula in the hard X-ray emission from SN 1987A
Creators: name: Greco, Emanuele
name: Miceli, Marco
name: Orlando, Salvatore
name: Olmi, Barbara
name: Bocchino, Fabrizio
name: Nagataki, Shigehiro
name: Ono, Masaomi
name: Dohi, Akira
name: Peres, Giovanni
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Since the day of its explosion, SN 1987A (SN87A) was closely monitored with the aim to study its evolution and to detect its central compact relic. The detection of neutrinos from the supernova strongly supports the formation of a neutron star (NS). However, the constant and fruitless search for this object has led to different hypotheses on its nature. Up to date, the detection in the ALMA data of a feature somehow compatible with the emission arising from a proto Pulsar Wind Nebula (PWN) is the only hint of the existence of such elusive compact object. Here we tackle this 33-years old issue by analyzing archived observations of SN87A performed Chandra and NuSTAR in different years. We firmly detect nonthermal emission in the $10-20$ kev energy band, due to synchrotron radiation. The possible physical mechanism powering such emission is twofold: diffusive shock acceleration (DSA) or emission arising from an absorbed PWN. By relating a state-of-the-art magneto-hydrodynamic simulation of SN87A to the actual data, we reconstruct the absorption pattern of the PWN embedded in the remnant and surrounded by cold ejecta. We found that, even though the DSA scenario cannot be firmly excluded, the most likely scenario that well explains the data is the PWN emission.
description: Accepted for publication in ApJ Letters
FUQAROLIK JAMIYATINI QURISH JARAYONI: O’ZGARISHLAR VA ISTIQBOLLAR
Creators: name: Abdimumin Jumayev
name: Pardaxol Normamatova
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: inson kapitali
islohot
fuqarolik jamiyati
o‟zgarish
yangilanish
ongning o‟zgarishi
qonun ustuvorligi
ijtimoiy-siyosiy tuzum

description: Ushbu maqolada fuqarolik jamiyati qurish yo‟lida mamlakatimizda olib borilayotgan islohotlar va ularning asosiy yo‟nalishlari masalasi muhokama qilingan., Ong va tafakkurning ijtimoiy o‟zgarishlarni amalga oshirishdagi ahamiyati atroflicha tahlil qilingan. Fuqarolik jamiyatini o‟zgartirish va faoliyatini tashkil qilishga doir bir nechta konsepsiyasi va uning innovatsion mohiyati yoritib beriladi
ИССИҚ ИҚЛИМ ШАРОИТИДА АВТОМОБИЛ ДВИГАТЕЛЛАРИНИНГ ИШЛАШ ХУСУСИЯТЛАРИНИ АНИҚЛАШ УСУЛЛАРИ ТАҲЛИЛИ
Creators: name: Муродулла Эшонқулов
name: Бахриддин Бегматов
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Двигатель
цилиндр
форсунка
двигател қуввати
солиштирма ѐнилғи сарфи
цилиндр-поршен гуруҳи
компрессион ҳалқа
мой сидирувчи ҳалқа
гилза
поршен
поршен ҳалқалари
поршен юбкаси
нуқсонлар

description: Ушбу мақолада транспорт воситаларини эксплуатация қилишда ички ѐнув двигателлари кўрсаткичларининг иссиқ иқлим таъсирида ўзгариши, поршен тубини ва цилиндрлар головкасининг олов тегадиган сиртини қурум босганда цилиндр деталларида иссиқлик оқимининг қайта тақсимланиши содир бўлади, уларнинг температураси ва поршен-гильза туташмасидаги тирқишлар ўзгариши ва Ўзбекистон табиий иқлим шароитларида ички ѐнув двигателларининг эксплуатацион хусусиятлари таҳлил қилинган
Connecting Blackbody Radiation, Relativity, and Discrete Charge in Classical Electrodynamics
Creators: name: Boyer, Timothy H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Physics (physics.class-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: It is suggested that an understanding of blackbody radiation within classical physics requires the presence of classical electromagnetic zero-point radiation, the restriction to relativistic (Coulomb) scattering systems, and the use of discrete charge. The contrasting scaling properties of nonrelativistic classical mechanics and classical electrodynamics are noted, and it is emphasized that the solutions of classical electrodynamics found in nature involve constants which connect together the scales of length, time, and energy. Indeed, there are analogies between the electrostatic forces for groups of particles of discrete charge and the van der Waals forces in equilibrium thermal radiation. The differing Lorentz- or Galilean-transformation properties of the zero-point radiation spectrum and the Rayleigh-Jeans spectrum are noted in connection with their scaling properties. Also, the thermal effects of acceleration within classical electromagnetism are related to the existence of thermal equilibrium within a gravitational field. The unique scaling and phase-space properties of a discrete charge in the Coulomb potential suggest the possibility of an equilibrium between the zero-point radiation spectrum and matter which is universal (independent of the particle mass), and an equilibrium between a universal thermal radiation spectrum and matter where the matter phase space depends only upon the ratio mc^2/kT. The observations and qualitative suggestions made here run counter to the ideas of currently accepted quantum physics.
description: 31 pages
Sphakia Survey relationships between regions and environmental zones
Creators: name: Sphakia Survey
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430104
subject: Archaeology of Europe, the Mediterranean and the Levant
classificationCode: 430305
subject: Classical Greek and Roman history
classificationCode: 430307
subject: Environmental history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)

description: Table detailing the relationships between the eight regions and eight environmental zones employed in the Sphakia Survey.All regions include more than one environmental zone, as seen in the table.
Tentative Discovery of a New Supernova Remnant in Cepheus: Unveiling an Elusive Shell in the Spitzer Galactic First Look Survey
Creators: name: Morris, Patrick W.
name: Stolovy, Susan
name: Wachter, Stefanie
name: Noriega-Crespo, Alberto
name: Pannuti, Thomas G.
name: Hoard, D. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have discovered an axially symmetric, well-defined shell of material in the constellation of Cepheus, based on imaging acquired as part of the Galactic First Look Survey with the Spitzer Space Telescope. The 86'' x 75'' object exhibits brightened limbs on the minor axis, and is clearly visible at 24 microns, but is not detected in the 3.6, 4.5, 5.8, 8.0, 70, or 160 micron images. Followup with 7.5 - 40 micron spectroscopy reveals the shell to be composed entirely of ionized gas, and that the 24 micron imaging traces solely [O IV] 25.89 micron emission. The spectrum also exhibits weaker [Ne III], [S III], and very weak [Ne V] emission. No emission from warm dust is detected. Spectral cuts through the center of the shell and at the northern limb are highly consistent with each other. The progenitor is not readily identified, but with scaling arguments and comparison to well-known examples of evolved stellar objects, we find the observations to be most straightforward to interpret in terms of a young supernova remnant located at a distance of at least 10 kpc, some 400 pc above the Galactic disk. If confirmed, this would be the first SNR discovered initially at infrared wavelengths.
description: 11 pages; accepted for publication in Astrophysical Journal Letters
Dark Matter Freeze-out during $\mathrm{SU}(2)_{\rm L}$ Confinement
Creators: name: Howard, Jessica N.
name: Ipek, Seyda
name: Tait, Tim M. P.
name: Turner, Jessica
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the possibility that dark matter is a pair of vector-like fermionic $\mathrm{SU}(2)_{\rm L}$ doublets and propose a novel mechanism of dark matter production that proceeds through the confinement of the weak sector of the Standard Model. This confinement phase causes the Standard Model doublets and dark matter to confine into pions. The dark pions freeze-out before the weak sector deconfines and generate a relic abundance of dark matter. We solve the Boltzmann equations for this scenario to determine the scale of confinement and constituent dark matter mass required to produce the observed relic density. We determine which regions of this parameter space evade direct detection, collider bounds, and successfully produce the observed relic density of dark matter. For a TeV scale pair of vector-like fermionic $\mathrm{SU}(2)_{\rm L}$ doublets, we find the weak confinement scale to be $\sim 700$ TeV.
description: 22 pages, 4 figures, 2 tables
ИННОВАЦИОН ПЕДАГОГИК ТЕХНОЛОГИЯЛАРНИНГ ЖАМИЯТ ТАРАҚҚИЁТИДАГИ АҲАМИЯТИ
Creators: name: Дилобар Сабиржановна Казакбаева
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: инновация
педагогик технология
интеракция
ҳамкорлик
интерфаол усуллар
инновацион ѐндашув
методология
назария ва амалиѐт уйғунлиги
рақобатбардош кадр
компетенция
креативлик
ахборотлаштириш
лойиҳалаштириш

description: Мазкур мақолада жамият тараққиѐти учун зарур бўлган рақобатбардош мутахассисларни тайѐрлашда инновацион технологияларнинг долзарблиги, зарурати, тадрижий тараққиѐти, ўзига хос хусусиятлари, уни жорий этиш шакл, усул ва воситалари бўйича илмий мулоҳа юритилган. Манбалар таҳлил қилинган ва шунга асосан муаллиф илмий фаразлари ҳамда хулосаси тақдим этилган
Letters in the forest: global precedence effect disappears for letters but not for non-letters under reading-like conditions
Creators: name: Schmitt, Andreas
name: Lachmann, Thomas
Publisher: name: F1000Research
Year: 2015

description: In the present study, we could observe a difference in the GPE between letters and non- letters: The GPE remained intact for non-letter stimuli but disappeared for letters; for letters there was no general advantage for global stimuli (i.e., no global advantage effect) and the congruence effect was independent of level (i.e, no asymmetric congruence effect). For the local level we imposed a scale of stimuli close to the critical threshold for fluent reading (Jordan and Martin, 1987). For the global level, we expected it to fall within the functional visual field (Sanders, 1970). Since the “forest before tree” effect vanished only for letters, we assume that a letter- specific strategy is applied to these stimuli. The emergence of a letter-specific strategy is in accordance with earlier studies, in which skilled readers used a specific processing strategy for encoding letters (Lachmann and van Leeuwen, 2004, 2008), while illiterates did not (Fernandes et al., 2014). This letter-specific processing strategy was described as more analytic than for non-letter shapes, for which processing is holistic. Consequently, the results suggest that this differentiation can be extended to compound figures, as long as the stimulus dimensions invite a reading-specific strategy.
Narrowing down on CIPK16 orthologues: a gene involved in enhanced salt tolerance
Creators: name: Amarasinghe, Shani
Publisher: name: F1000Research
Year: 2015

description: Calcineurin B-Like Protein Interacting Protein Kinases (CIPKs) are key regulators of pre-transcriptional and post-translational responses to abiotic stresses. Many plant species have numerous forms of CIPKs, which appear to have very specific roles during abiotic stress. From a forward genetics screen, Arabidopsis thaliana CIPK16 (AtCIPK16) has been previously identified as an important gene responsible for reduced shoot salt accumulation and improved salinity tolerance in Arabidopsis and transgenic barley. However, the existence of AtCIPK16 homologues in cereals and the mode of action of AtCIPK16 in them are still unknown. Thus, this study aimed to understand the prevalence of CIPK16, and in return find an AtCIPK16 orthologue in cereals. A phylogenetic analysis has been performed on CIPK genes obtained from several species related to A. thaliana and cereal crops. The resulting phylogenetic tree revealed insights into the evolution of CIPK16 which has important consequences for breeding salt tolerance in cereal crops. One particular observation was that the clade including AtCIPK16 had a sister clade which contained two segmentally duplicated genes AtCIPK5 and AtCIPK25. Furthermore, we find AtCIPK16 contains an indel which is conserved in Brassicaceae.
The Sphakia Survey: Pottery Fabric Research and Analysis
Creators: name: Sphakia Survey
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430104
subject: Archaeology of Europe, the Mediterranean and the Levant
classificationCode: 430305
subject: Classical Greek and Roman history
classificationCode: 430307
subject: Environmental history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)

description: A brief outline of the Sphakia Survey's ceramic fabric analysis.
There is no Diophantine $D(-1)$--quadruple
Creators: name: Bonciocat, Nicolae Ciprian
name: Cipu, Mihai
name: Mignotte, Maurice
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11D09 (Primary) 11D45, 11B37, 11J68 (Secondary)

description: A set of positive integers with the property that the product of any two of them is the successor of a perfect square is called Diophantine $D(-1)$--set. Such objects are usually studied via a system of generalized Pell equations naturally attached to the set under scrutiny. In this paper, an innovative technique is introduced in the study of Diophantine $D(-1)$--quadruples. The main novelty is the uncovering of a quadratic equation relating various parameters describing a hypothetical $D(-1)$--quadruple with integer entries. In combination with extensive computations, this idea leads to the confirmation of the conjecture according to which there is no Diophantine $D(-1)$--quadruple.
description: 29 pages, 2 figures
The Sphakia Survey: Research Methods
Creators: name: Sphakia Survey
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430104
subject: Archaeology of Europe, the Mediterranean and the Levant
classificationCode: 430305
subject: Classical Greek and Roman history
classificationCode: 430307
subject: Environmental history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)

description: 1. Environmentaldefinition of environmental zonesgeology, sediments, erosionhistorical ecology/vegetation land-use observationspollen core in Frangokastello; earlier core just outside, near Kallikratitree ringssatellite imagesaerial photographs (with thanks to the Greek Ministry of the Environment and Land-use)2. Archaeologicala. fieldworkdesign of sampling programme this is the EMC/CV article of 1988confirming sites already discoveredcontour transects, line transects, kilometer squares, moseys, free excavationsspecial intensive collection of large sites such as Loutro/Phoinix and Anopoli ("vacuuming")revisiting and recording sitesdrawing plans for sites with standing remains (Roman houses, Byzantine churches)site photographyb. post-fieldworkdiagramming and date-diagrammingstudy of finds by pottery specialistspottery fabric researchstudy of finds by specialists on lithics (obsidian, chert), bones, coinsdrawing artefactsconstruction of databasesfinds photography3. DocumentaryGraeco-Roman tomb inscriptionsGraeco-Roman texts (e.g. Theophrastus on cypress trees)Byzantine MSSVenetian reports (relazioni), drawings, and mapsTurkish-period tax records18th-century land sale documentsecclesiastical recordsforeign travellers' accounts (e.g. Randolph, quoted in EMC/CV 1989novels (Ioannis Kondilakis, Patouchas; Evelyn Waugh, the Sword of Honour, trilogy)Cretan songs (mantinades) and proverbs4. LocalToponyms (topothesies, ‘place-puttings’ for landscape features as well as settlements)water sourcesagricultural practices (e.g. vines, grain)shepherdingbee-keepingweavinguse of lime kilnstiming of work throughout the yearroutes (footpaths; kaldirimia = built mule tracks, car roads)trade and exchange (e.g. lumber from Samaria for grain from the Messara Plain in south central Crete; pottery)
ПРИМЕНЕНИЕ В ПЕДАГОГИЧЕСКИХ ВУЗАХ ЗДОРОВЬЕСБЕРЕГАЮЩЕГО КОМПОНЕНТА МУЛЬТИМЕДИЙНЫХ ТЕХНОЛОГИЙ НА ЗАНЯТИЯХ БИОЛОГИЧЕСКОГО ЦИКЛА
Creators: name: Л. Н. Эгамбердиева
name: Г. А. Шахмурова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: здоровый образ жизни
мультимедийные технологии
информатизация
здоровье
личностно-ориентированное образование
биологические дисциплины

description: Применение мультимедийной технологии в учебном процессе, способствует развитию эффективной среды обучения и повышению успеваемости, развитию навыков здоровье сбережения качества профессионального образования и обучениям сохранить здоровье обучающихся
Complex Citations Are Needed in Wide- Open Science: Ensuring Transparency, Reproducibility, and Credit for All Supporting Research Contributions
Creators: name: Stall, Shelley
name: Agarwal, Deborah
name: Stockhause, Martina
name: Wyborn, Lesley
Publisher: name: Zenodo
Year: 2023
Subjects: data citation
complex citations

description: Town Hall at AGU23 in San Francisco, California.

TH15E: Complex Citations Are Needed in Wide- Open Science: Ensuring Transparency, Reproducibility, and Credit for All Supporting Research Contributions

Moscone Center West, 2004

Monday December 11, 2023

 Abstract:

An ongoing challenge relevant to most sections of AGU is the difficulty in citing 100+ digital objects such as datasets, software, samples, and images that may be assigned individual persistent identifiers (e.g., DOI). Journals require authors to place citations over some set limit into supplemental information, where individual citations are not properly indexed, not linked to the manuscript, nor tracked accurately. This is critical to enable reproducible research and for researchers, institutions, and project managers to trace citation, get appropriate credit, and report impact to funders. 

We propose the term ‘reliquary’ to describe all the datasets, software, or other digital objects that support research findings for a specific paper. A reliquary may contain hundreds to millions of objects, often created by different groups and preserved in different repositories.  We need to develop a scalable implementation strategy to enable researchers to use this type of citation and allow integration into common citation/impact metrics.

This Town Hall is relevant to all Sections of AGU and beyond including researchers, repositories managers, infrastructure builders, journal staff, and indexers. The work is related to the new working group “Complex Citations” of the Research Data Alliance.

For project information: 

https://www.rd-alliance.org/groups/complex-citations-working-group
ЎЗБЕКИСТОНННИНГ ХОРИЖИЙ МАМЛАКАТЛАР БИЛАН ИЛМ-ФАН СОҲАСИДАГИ ҲАМКОРЛИК АЛОҚАЛАРИ
Creators: name: Бурхон Бўронович Жаҳонгиров
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Президент
Фармон
қарор
Фанлар академияси
илмий марказлар университет
институт
лицей
илмий салоҳият
илм-фан
илмийтадқиқот
илмий ҳамкорлик
халқаро алоқа
шартнома
конференция
илмий семинар

description: Ушбу мақолада Ўзбекистонда илм-фаннинг ривожланиши омиллари ҳақида сўз юритилиб, Ўзбекистон Республикаси Фанлар Академияси ва илмийтадқиқот институтлари, Олий таълим муассасалари ҳамда илмий марказларнинг фаолияти, улар фаолиятини такомиллаштириш мақсадида қабул қилинган норматив – ҳуқуқий хужжатларнинг қабул қилиниши ва унинг ижроси ҳақида маълумотлар келтирилган. Ўзбекистоннинг – хорижий мамлакатлар билан илмий-техникавий алоқалари натижасида илм-фанни ривожлантириш борасида тузилган шартномалар ва илмий лойиҳалар асосида фаолият олиб бориши, ҳамкорликда бажарилган лойиҳалар негизида конференция ва илмий семинарлар ўтказиш, ўзаро тажриба алмашиш, ҳамкорликда илмий кадрлар тайѐрлаш, келажакда ҳамкорликда ўзаро манфаатли илмий-тадқиқот ишларини ривожлантириш масалалари тадқиқ этилган
ЮНОН МУМТОЗ ФАЛСАФАСИДАГИ АРАСТУ ФАЛСАФИЙ ҚАРАШЛАРИДА ЭРКИНЛИК ФЕНОМЕНИ
Creators: name: Дилнавоз Суннат Қизи Рахимджанова
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: эркинлик
ўзбошимчалик
эркин фаолият
ирода эркинлиги
танлов
ўзбошимча қилмишлар
сабаб-оқибат
транзиент ва имманент
бирламчи маъсулият принципи
алтернатив имкониятлар принципи
жавобгарлик.

description: Мақолада антик давр мумтоз фалсафасининг йирик намоѐндаси Арастунинг эркинлик атамаси ҳақидаги тасаввурлари ўрганилган. Унинг ҳозирги замон файласуфларининг фикрлари орқали очиб берилган. Эркинликнинг ўзбошимчалик билан боғлиқлиги кўрсатилган. Эркинликни детерминизм билан боғлиқлиги ѐки боғлиқ бўлмаслиги талқин этилган
ENHANCING CRITICAL THINKING OF STUDENTS IN CURRICULUM
Creators: name: Barno Djumanova
Publisher: name: Academic research in educational sciences
Year: 2021
Subjects: Critical Thinking ability; of FRISCO (Focus
Reason
Inference
Situation
Clarity
and Overview)
methods

description: The main aim of education is not just to give students useful information but to teach them thinking skills, to make decisions and choices, to develop their mental abilities. Educators should stir pupils’ curiosity, creativity and imagination; broaden their horizons; deepen their way of thinking, enrich their outlook and scope of knowledge. Additionally, critical thinking is also needed to be in this list, since it is really influential in every stage of life. The purpose of this paper is to explore importance of critical thinking as well as some techniques to develop thinking critically in the classroom