cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improving heavy Dirac neutrino prospects at future hadron colliders using machine learning
Creators: name: Feng, Jie
name: Li, Mingqiu
name: Yan, Qi-Shu
name: Zeng, Yu-Pan
name: Zhang, Hong-Hao
name: Zhang, Yongchao
name: Zhao, Zhijie
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022
Subjects: subject: 530
subject: neutrino: mass
subject: neutrino: heavy
subject: boson: mass
subject: seesaw model: inverse
subject: neutrino: Dirac
subject: neutrino: mixing
subject: transverse energy: missing-energy
subject: background
subject: hadron
subject: sensitivity
subject: lepton
subject: numerical calculations
subject: kinematics
subject: Specific BSM Phenomenology
subject: Sterile or Heavy Neutrinos

description: In this work, by using the machine learning methods, we study the sensitivities of heavy pseudo-Dirac neutrino N in the inverse seesaw at the high-energy hadron colliders. The production process for the signal is pp → ℓ → 3ℓ + $ {E}_T^{\mathrm{miss}} $, while the dominant background is pp → WZ → 3ℓ + $ {E}_T^{\mathrm{miss}} $. We use either the Multi-Layer Perceptron or the Boosted Decision Tree with Gradient Boosting to analyse the kinematic observables and optimize the discrimination of background and signal events. It is found that the reconstructed Z boson mass and heavy neutrino mass from the charged leptons and missing transverse energy play crucial roles in separating the signal from backgrounds. The prospects of heavy-light neutrino mixing |V$_{ℓN}$|$^{2}$ (with ℓ = e, μ) are estimated by using machine learning at the hadron colliders with $ \sqrt{s} $ = 14 TeV, 27 TeV, and 100 TeV, and it is found that |V$_{ℓN}$|$^{2}$ can be improved up to $ \mathcal{O} $(10$^{−6}$) for heavy neutrino mass m$_{N}$ = 100 GeV and $ \mathcal{O} $(10$^{−4}$) for m$_{N}$ = 1 TeV.
Transmission of quantum entanglement through a random medium
Creators: name: Candé, M.
name: Goetschy, A.
name: Skipetrov, S. E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the high-dimensional entanglement of a photon pair transmitted through a random medium. We show that multiple scattering in combination with the subsequent selection of only a fraction of outgoing modes reduces the average entanglement of an initially maximally entangled two-photon state. Entanglement corresponding to a random pure state is obtained when the number of modes accessible in transmission is much less than the number of modes in the incident light. An amount of entanglement approaching that of the incident light can be recovered by accessing a larger number of transmitted modes. In contrast, a pair of photons in a separable state does not gain any entanglement when transmitted through a random medium.
description: 6 pages, 2 figures. Text slightly revised
RF Accelerator Technology R&D: Report of AF7-rf Topical Group to Snowmass 2021
Creators: name: Belomestnykh, Sergey
name: Nanni, Emilio A.
name: Weise, Hans
name: Baryshev, Sergey V.
name: Dhakal, Pashupati
name: Geng, Rongli
name: Giaccone, Bianca
name: Jing, Chunguang
name: Liepe, Matthias
name: Lu, Xueying
name: Luo, Tianhuan
name: Myneni, Ganapati
name: Nassiri, Alireza
name: Neuffer, David
name: Ng, Cho-Kuen
name: Posen, Sam
name: Tantawi, Sami
name: Valente-Feliciano, Anne-Marie
name: Vay, Jean-Luc
name: Weatherford, Brandon
name: Yamamoto, Akira
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2022

description: Accelerator radio frequency (RF) technology has been and remains critical for modern high energy physics (HEP) experiments based on particle accelerators. Tremendous progress in advancing this technology has been achieved over the past decade in several areas highlighted in this report. These achievements and new results expected from continued R&D efforts could pave the way for upgrades of existing facilities, improvements to accelerators already under construction (e.g., PIP-II), well-developed proposals (e.g., ILC, CLIC), and/or enable concepts under development, such as FCC-ee, CEPC, C3, HELEN, multi-MW Fermilab Proton Intensity Upgrade, future Muon Colloder, etc. Advances in RF technology have impact beyond HEP on accelerators built for nuclear physics, basic energy sciences, and other areas. Recent examples of such accelerators are European XFEL, LCLS-II and LCLS-II-HE, SHINE, SNS, ESS, FRIB, and EIC. To support and enable new accelerator-based applications and even make some of them feasible, we must continue addressing their challenges via a comprehensive RF R&D program that would advance the existing RF technologies and explore the nascent ones.
THE CHALLENGES IN TEACHING ENGLISH TO MEDICAL STUDENTS
Creators: name: Esanova, Maftuna
name: Buriyev, Dilmurod
Publisher: name: Zenodo
Year: 2023

description: This essay explores the multifaceted landscape of teaching English to medical students, shedding light on the challenges, strategies, and significance of this endeavor. It delves into the linguistic complexities medical students face, grappling with the specialized terminology and discourse of medical English.
Growth kinetics of Lactobacillus acidophilus during the bioconversion process of agro-sugarcane waste
Creators: name: Romero-Mota, Diana Ibeth
name: Estrada-García, Joaquín
name: Alvarado-Lassman, Alejandro
name: Méndez-Contreras, Juan Manuel
Publisher: name: Zenodo
Year: 2022
Subjects: Agro-sugarcane waste, bioconversion, L. acidophilus, lactic acid, biomass.

description: Agro-sugarcane Waste (ASW) is generated during the manual harvest of sugarcane, these represent a rich source of nutrients for microorganisms and generate valuable biological products, such as enzymes, organic acids, and other useful metabolites that have various applications in various fields. This research’s objective was to develop growth kinetics of Lactobacillus acidophilus during the bioconversion process of agro-sugarcane waste, using variable agitation speeds. The substrate was characterized and heat-treated to eliminate pathogenic microorganisms that could interfere during the bioconversion process. The initial carbohydrate concentration was 58.46 g L-1. The highest value of the maximum growth speed (μmax) was obtained for the kinetics at 150 rpm being 0.2312 h-1, producing 37.08 g L-1 of LA and an increase of up to 165 x 106 cells mL-1, while at 100 rpm a μmax of 0.2164 h-1 was obtained but 54.16 g L-1 of LA was produced with a yield based on the product generated of 0.8740 g LA/ g carbohydrates, being the highest value calculated.
Revisiting cosmological bounds on sterile neutrinos
Creators: name: Vincent, Aaron C.
name: Martinez, Enrique Fernandez
name: Hernandez, Pilar
name: Lattanzi, Massimiliano
name: Mena, Olga
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We employ state-of-the art cosmological observables including supernova surveys and BAO information to provide constraints on the mass and mixing angle of a non-resonantly produced sterile neutrino species, showing that cosmology can effectively rule out sterile neutrinos which decay between BBN and the present day. The decoupling of an additional heavy neutrino species can modify the time dependence of the Universe's expansion between BBN and recombination and, in extreme cases, lead to an additional matter-dominated period; while this could naively lead to a younger Universe with a larger Hubble parameter, it could later be compensated by the extra radiation expected in the form of neutrinos from sterile decay. However, recombination-era observables including the Cosmic Microwave Background (CMB), the shift parameter $R_{CMB}$ and the sound horizon $r_s$ from Baryon Acoustic Oscillations (BAO) severely constrain this scenario. We self-consistently include the full time-evolution of the coupled sterile neutrino and standard model sectors in an MCMC, showing that if decay occurs after BBN, the sterile neutrino is essentially bounded by the constraint $\sin^2θ\lesssim 0.026 (m_s/\mathrm{eV})^{-2}$.
description: 16 pages. v2: substantial additions, including effect of decays to heavier species and complementary bounds
STUDYING THE PROBLEM OF SOCIAL ADAPTATION OF STUDENTS IN HIGHER EDUCATIONAL INSTITUTIONS
Creators: name: Kholmatov, Sh.
Publisher: name: Zenodo
Year: 2023

description: It is known that at present mentally developed, creatively gifted, inquisitive youth is a huge source of strength that drives the scientific and technological progress of society, which in the future will have to integrate with the world community in all spheres. In this regard, the search for young talented specialists, their correct orientation, the formation of knowledge and skills are one of the highest goals.
Empirical calibration of full scale agent-based models of school choice: computational challenges and model validation
Creators: name: Dignum, Eric
Publisher: name: Zenodo
Year: 2022
Subjects: agent-based modelling, empirical calibration, school choice, school segregation, complex systems

description: School segregation is widely associated with existing inequalities and their reproduction. Although it has been studied for decades and using various methods/techniques, it still is a persistent problem in society. Currently employed methodologies often treat households on the micro-level as utility maximising individuals that decide in isolation or analyse macroscopic trends and correlations. However, these methodologies might miss important interactions within and between these levels. For example, parents rely on their social networks, observe current school compositions, school profiles, live in segregated neighbourhoods and are subject to institutional rules, hence they interact with each other and their environment. Simulation-based techniques, such as Agent-Based Models (ABM) provide a way to explicitly model these features and have shown promising results in other fields of science. Existing ABM of school choice are mostly based on theoretical rules and smaller scales, hence do not take the full scale of the city into account. On the other hand, currently used fully data driven methods, such as discrete choice analysis, do not consider the potentially complex interactions. Therefore, we present results of one of the first empirically calibrated ABM of school choice on the Amsterdam scale. However, key challenges of ABM are empirical calibration and validation of their simulated (household) behaviour. These are important for confidence in the model and could inform potential policy, but requires a lot of data and computation. Multiple runs are needed to grasp how sensitive the model is to its input parameters, to quantify uncertainty and analyse the impact of specific scenarios. We show some of the benefits of our modelling approach as well as some of the computational difficulties and existing challenges we encountered while modelling school segregation at the Amsterdam scale.
Normal and inverse magnetocaloric effect in magnetic multilayers with antiferromagnetic interlayer coupling
Creators: name: Szałowski, Karol
name: Balcerzak, Tadeusz
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The thermodynamics of a spin-1/2 magnetic multilayer system with antiferromagnetic interplanar couplings is studied using the Pair Approximation method. The special attention is paid to magnetocaloric properties, quantified by isothermal entropy change. The multilayer consists of two kinds of magnetic planes, one of which is diluted. The intraplanar couplings in both planes have arbitrary anisotropy ranging between Ising and isotropic Heisenberg interactions. The phase diagram related to the occurrence of magnetic compensation phenomenon is constructed and discussed. Then the isothermal entropy change is discussed as a function of interaction parameters, magnetic component concentration and external magnetic field amplitude. The ranges of normal and inverse magnetocaloric effect are found and related to the presence or absence of compensation.
Implications of fast radio bursts for superconducting cosmic strings
Creators: name: Yu, Yun-Wei
name: Cheng, Kwong-Sang
name: Shiu, Gary
name: Tye, Henry
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Highly beamed, short-duration electromagnetic bursts could be produced by superconducting cosmic string (SCS) loops oscillating in cosmic magnetic fields. We demonstrated that the basic characteristics of SCS bursts such as the electromagnetic frequency and the energy release could be consistently exhibited in the recently discovered fast radio bursts (FRBs). Moreover, it is first showed that the redshift distribution of the FRBs can also be well accounted for by the SCS burst model. Such agreements between the FRBs and SCS bursts suggest that the FRBs could originate from SCS bursts and thus they could provide an effective probe to study SCSs. The obtained values of model parameters indicate that the loops generating the FRBs have a small length scale and they are mostly formed in the radiation-dominated cosmological epoch.
description: 10 pages, 1 figure, accepted for publication in JCAP
Peculiarities of heat release and generation of acoustic emission signals in armco iron under cyclic deformation
Creators: name: Плехов О. А.
name: Пантелеев И. А.
name: Леонтьев В. А.
Publisher: name: Физическая мезомеханика
Year: 2009
Subjects: ЦИКЛИЧЕСКОЕ ДЕФОРМИРОВАНИЕ
ИНФРАКРАСНОЕ СКАНИРОВАНИЕ
МЕТОД АКУСТИЧЕСКОЙ ЭМИССИИ
CYCLIC DEFORMATION
INFRARED SCANNING
ACOUSTIC EMISSION METHOD

description: В работе проведено экспериментальное исследование процессов изменения температуры образца и генерации сигналов акустической эмиссии при циклическом деформировании армко-железа с применением методов акустической эмиссии и инфракрасного сканирования. Для проведения циклических испытаний была разработана оригинальная установка на базе вибростенда ВЭДС-400А, инфракрасной камеры CEDIP Silver 450M и системы регистрации акустической эмиссии Vallen AMSY5. Анализ полученных результатов позволил установить связь между величиной напряжений, соответствующей пределу усталости материала, и порогом активизации процессов диссипации тепла и генерации сигналов акустической эмиссии, а также показать качественное изменение статистических закономерностей распределения сигналов акустической эмиссии на различных стадиях усталостного деформирования.
The Continuous Orbifold of N=2 Minimal Model Holography
Creators: name: Gaberdiel, Matthias R.
name: Kelm, Maximilian
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For the N=2 Kazama-Suzuki models that appear in the duality with a higher spin theory on AdS_3 it is shown that the large level limit can be interpreted as a continuous orbifold of 2N free bosons and fermions by the group U(N). In particular, we show that the subset of coset representations that correspond to the perturbative higher spin degrees of freedom are precisely described by the untwisted sector of this U(N) orbifold. We furthermore identify the twisted sector ground states of the orbifold with specific coset representations, and give various pieces of evidence in favour of this identification.
description: 24 pages, v2: minor corrections
Beyond 1 Million Genomes (B1MG) D4.3 Secure cross-border data access roadmap - 2v0
Creators: name: Spalding, Dylan
name: Nyrönen, Tommi
name: Riski, Riku
Publisher: name: Zenodo
Year: 2023
Subjects: Beyond 1 Million Genomes
B1MG
1+ Million Genomes initiative
1+MG
cross-border access
GDI

description: This document outlines the updated roadmap of the EU 1+ million genomes initiative for the deployment of a network of nodes allowing secure cross border genomic and phenotypic data access, primarily as part of the Genomic Data Infrastructure project. The document outlines the proposed initial infrastructure, including the standards, application, and technologies within the infrastructure, and describes a proof-of-concept that was used to demonstrate the proposed infrastructure, and elicit feedback from a range of stakeholders. The document then goes on to outline the key technology (such as eID and SIMPL), standards (e.g. ISO, GA4GH) and policy (Data Protection by Default and Design principles, 1+MG trust framework) developments at a European level to help enable interoperability between different data spaces (e.g European Health Data Space). Work by 1+MG experts ensures relevance to the Genomic Data Infrastructure and improved alignment between prospective European data spaces. A roadmap is presented which is aligned with the milestones and deliverables within the Genomic Data Infrastructure project. The document references the existing Genomic Data Infrastructure helpdesk roadmap, which defines how operations will be set up following the FitSIM standard.
Effective theory of two-dimensional chiral superfluids: gauge duality and Newton-Cartan formulation
Creators: name: Moroz, Sergej
name: Hoyos, Carlos
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a theory of Galilean-invariant conventional and chiral $p_x \pm ip_y$ fermionic superfluids at zero temperature in two spatial dimensions in terms of a dual gauge theory. Our formulation is general coordinate invariant. The parity-violating effects are encoded in the Wen-Zee term that gives rise to the Hall viscosity and edge current. We show that the relativistic superfluid with the Euler current reduces to the chiral superfluid in the limit $c\to\infty$. Using Newton-Cartan geometry we construct the covariant formulation of the effective theory and calculate the energy current.
description: v2: 15 pages, minor improvements, references added
Improved Quantum Algorithm for Triangle Finding via Combinatorial Arguments
Creators: name: Gall, François Le
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this paper we present a quantum algorithm solving the triangle finding problem in unweighted graphs with query complexity $\tilde O(n^{5/4})$, where $n$ denotes the number of vertices in the graph. This improves the previous upper bound $O(n^{9/7})=O(n^{1.285...})$ recently obtained by Lee, Magniez and Santha. Our result shows, for the first time, that in the quantum query complexity setting unweighted triangle finding is easier than its edge-weighted version, since for finding an edge-weighted triangle Belovs and Rosmanis proved that any quantum algorithm requires $Ω(n^{9/7}/\sqrt{\log n})$ queries. Our result also illustrates some limitations of the non-adaptive learning graph approach used to obtain the previous $O(n^{9/7})$ upper bound since, even over unweighted graphs, any quantum algorithm for triangle finding obtained using this approach requires $Ω(n^{9/7}/\sqrt{\log n})$ queries as well. To bypass the obstacles characterized by these lower bounds, our quantum algorithm uses combinatorial ideas exploiting the graph-theoretic properties of triangle finding, which cannot be used when considering edge-weighted graphs or the non-adaptive learning graph approach.
description: 17 pages, to appear in FOCS'14; v2: minor corrections
title: The 'Swadeshi Jinish' from the 'Didima Company': an analysis of the connection between Thakurmar Jhuli by Dakshinaranjan Mitra Majumder and nationalism in Bengal in the late nineteenth and early twentieth century
Creators: name: Era, Mahmuda Iasmin
Publisher: name: Memorial University of Newfoundland
Year: 2023

description: This thesis provides a critical analysis of the Bengali folktale collection Thakurmar Jhuli (1907) by Dakshinaranjan Mitra Majumder linking it to the prevalent notion of Bengal folklore and Bengali nation of late nineteenth and early twentieth century Bengal. I focus on the ways in which the dominant scholarly and political ideologies of the time shaped the choice of tales in the collection. In particular, this study analyzes Majumder’s writing in its historical context by drawing upon Benedict Anderson’s theory of nationalism and Herder’s concept of romantic nationalism. Moreover, I discuss the content of this collection adopting Sadhana Naithani’s idea of “prefaced space” and Maurice Bloomfield’s “Hindu motif” to discuss the connection between Bengal folklore and nationalism of the time. Taking a folkloric approach of analyzing the content and context of the collection, I demonstrate that this collection by Majumder introduced a Bengali folktale genre named “rupkatha” against the colonial genre of folktales and fairy tales. In so doing, he also assumed a power position where he made representational choices in including and excluding the religious, linguistic and cultural elements of the people of Bengal. Finally, demonstrating examples from other Bengali folklore genres, the thesis asserts the importance of addressing the absence of Islamic elements in Majumder’s collection, and the investigation of different versions of rupkatha to create a more complete sense of the genre.
THE INFLUENCE OF SOIL FERTILITY ON SOIL FERTILITY FROM LEGUMES
Creators: name: Safarova, Khilola
name: Ergashov, Mirsharif
Publisher: name: Zenodo
Year: 2023

description: The article repeats legumes crop as Effect of sown bean varieties on soil fertility The soil is organic when crops are planted in cotton and other crops enriched with substances and creates an additional base of ozone. Bean grain crops only feed on livestock, increasing soil fertility substance is not only a means of producing, but is also harmful phytosanitary to remove insect and disease infections It also functions.
Shadows and cavities in protoplanetary disks: HD163296, HD141569A, and HD150193A in polarized light
Creators: name: Garufi, Antonio
name: Quanz, Sascha P.
name: Schmid, Hans Martin
name: Avenhaus, Henning
name: Buenzli, Esther
name: Wolf, Sebastian
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The morphological evolution of dusty disks around young (few Myr-old) stars is pivotal to better understand planet formation. Since both dust grains and the global disk geometry evolve on short timescale, high-resolution imaging of a sample of objects may provide important hints towards such an evolution. We enlarge the sample of protoplanetary disks imaged in polarized light with high-resolution by observing the Herbig Ae/Be stars HD163296, HD141569A, and HD150193A. We integrate our data with previous datasets to paint a larger picture of their morphology. We report a weak detection of the disk around HD163296 in both H and Ks band. The disk is resolved as a broken ring structure with a significan surface brightness drop inward of 0.6 arcsec. No sign of extended polarized emission is detected from the disk around HD141569A and HD150193A. We propose that the absence of scattered light in the inner 0.6 arcsec around HD163296 and the non-detection of the disk around HD150193A may be due to similar geometric factors. Since these disks are known to be flat or only moderately flared, self-shadowing by the disk inner wall is the favored explanation. We show that the polarized brightness of a number of disks is indeed related to their flaring angle. Other scenarios (such as dust grain growth or interaction with icy molecules) are also discussed. On the other hand, the non-detection of HD141569A is consistent with previous datasets revealing the presence of a huge cavity in the dusty disk.
description: 10 pages, 5 figures; accepted by Astronomy & Astrophysics
Framework for a Volume Model for Monoclinic Amphibole (Code and Data)
Creators: name: Swindle, Carl R
Publisher: name: Zenodo
Year: 2023

description: This is the data I used and code I wrote to process the data and develop the preliminary volume model in the third chapter of my PhD thesis. I plan on improving the organization of the code in the near future. If you have any questions, feel free to contact me.
Polarization effects in radiative decay of polarized $τ$ lepton
Creators: name: Gakh, G. I.
name: Konchatnij, M. I.
name: Korchin, A. Yu.
name: Merenkov, N. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The polarization effects in the one-meson radiative decay of the polarized $τ$ lepton, $τ^-\toπ^-γν_τ$, are investigated. The inner bremsstrahlung and structural amplitudes are taken into account. The asymmetry of the differential decay width caused by the $τ$ lepton polarization and the Stokes parameters of the emitted photon itself, are calculated depending on the polarization of the decaying $τ$ lepton. The numerical estimation of these physical quantities was done for arbitrary direction of the $τ$ lepton polarization 3-vector in the rest frame. The vector and axial-vector form factors describing the structure-dependent part of the decay amplitude are determined using the chiral effective theory with resonances (R$χ$T).
description: 37 pages,7 figures
ХИЗМАТЛАР СОҲАСИНИ РИВОЖЛАНТИРИШДА ИНВЕСТИТЦИЯ ЛОЙИҲАЛАРНИ ЎРНИ
Creators: name: Азимов, Зафар
Publisher: name: Zenodo
Year: 2023

description: Мақолада Сурхондарё вилоятининг хизматлар соҳасидаги олиб борилаётган ислоҳотлар ёритиб берилган. Сурхондарё вилоятида хизматлар соҳасига оид инвестицион лойиҳалар ва ушбу соҳани ривожланишига ажратилган маблағлар туманлар ва банклар кесимида келтирилган. Статистик кўрсаткичлар таҳлил қилинган.
Half of the Most Luminous Quasars May Be Obscured: Investigating the Nature of WISE-Selected Hot, Dust-Obscured Galaxies
Creators: name: Assef, Roberto J.
name: Eisenhardt, Peter R. M.
name: Stern, Daniel
name: Tsai, Chao-Wei
name: Wu, Jingwen
name: Wylezalek, Dominika
name: Blain, Andrew W.
name: Bridge, Carrie R.
name: Donoso, Emilio
name: Gonzales, Alexandria
name: Griffith, Roger L.
name: Jarrett, Thomas H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The WISE mission has unveiled a rare population of high-redshift ($z=1-4.6$), dusty, hyper-luminous galaxies, with infrared luminosities $L_{\rm IR} > 10^{13}~L_{\odot}$, and sometimes exceeding $10^{14}~L_{\odot}$. Previous work has shown that their dust temperatures and overall far-IR SEDs are significantly hotter than expected for star-formation. We present here an analysis of the rest-frame optical through mid-IR SEDs for a large sample of these so-called "Hot, Dust-Obscured Galaxies" (Hot DOGs). We find that the SEDs of Hot DOGs are generally well modeled by the combination of a luminous, yet obscured AGN that dominates the rest-frame emission at $λ> 1μ\rm m$ and the bolometric luminosity output, and a less luminous host galaxy that is responsible for the bulk of the rest optical/UV emission. Even though the stellar mass of the host galaxies may be as large as $10^{11}-10^{12}~M_{\odot}$, the AGN emission, with luminosities comparable to those of the most luminous QSOs known, require that either Hot DOGs have black hole masses significantly in excess of the local relations, or that they radiate significantly above the Eddington limit. We show that, while rare, the number density of Hot DOGs is comparable to that of equally luminous but unobscured (i.e., Type 1) QSOs. This is inconsistent with the trend of a diminishing fraction of obscured objects with increasing luminosity found for less luminous QSOs, possibly indicating a reversal in this relation at high luminosity, and that Hot DOGs are not the torus-obscured counterparts of the known optically selected, largely unobscured Hyper-Luminous QSOs. Hot DOGs may represent a different type of galaxy and thus a new component of the galaxy evolution paradigm. Finally, we discuss the environments of Hot DOGs and show that these objects are in regions as dense as those of known high-redshift proto-clusters.(Abridged)
description: Accepted for publication in The Astrophysical Journal. Text and figures modified to address referee's comments. 16 pages, 12 figures, 2 tables
Electromagnetic production of electron and positron in collisions of heavy nuclei
Creators: name: Khriplovich, I. B.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider the cross-section of electromagnetic production of $e^+ e^-$ pair in adiabatic scattering of heavy nuclei.
description: 3 pages 1 figure, JETP Letters, in press
t dependence of the slope of the high energy elastic pp cross section
Creators: name: Khoze, V. A.
name: Martin, A. D.
name: Ryskin, M. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the main factors which cause the variation of the value of the local slope of the elastic pp cross section B(t)=d[\ln(dσ_el(pp)/dt]/dt with t. Namely, we discuss the role of the pion-loop insertion in the pomeron trajectory, the t-dependence of the pomeron-nucleon coupling and the role of the eikonalization of the proton-proton amplitude in both the one- and two-channel eikonal models.
description: 16 pages, 11 figures; IPPP/14/86, DCPT/14/172, version to be published in J.Phys.G
Improving the evaluation of fracture critical bridges using measured rainflow response
Creators: name: Dean, Peter Kenneth
Publisher: name: The University of Texas at Austin
Year: 2005
Subjects: Rainflow
Fracture critical bridges
MicroSAFE

description: A strain data acquisition system known as MicroSAFE was used in the field to evaluate two fracture critical bridges for the Texas Department of Transportation. This system was tested for its applicability for future use by TxDOT. The first bridge is located in downtown Austin, TX and is an exit ramp for Interstate-35. The MicroSAFE units were used to record rainflow strain data and that information was used to determine a fatigue life for the bridge. A second bridge south of San Antonio, TX was also evaluated and the rainflow data was corroborated with a weigh-in-motion sensor located near the bridge. The MicroSAFE units were found to be a viable option for TxDOT, with the data suggesting that the determination of a fatigue life should affect the inspection schedule for a bridge
Antrittsrede von Jutta Günther als Rektorin der Universität Bremen am 6. September 2022
Creators: name: Günther, Jutta
Publisher: name: Universität Bremen
Year: 2022
Subjects: subject: Antrittsrede
subject: Rektorat
subject: Jutta Günther
subject: Universität Bremen
subject: 80

description: Antrittsrede von Professor Jutta Günther als Rektorin der Universität Bremen gehalten am 6. September 2022.
Newtonian View of General Relativistic Stars
Creators: name: Oliveira, A. M.
name: Velten, H. E. S.
name: Fabris, J. C.
name: Salako, I. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Although general relativistic cosmological solutions, even in the presence of pressure, can be mimicked by using neo-Newtonian hydrodynamics, it is not clear whether there exists the same Newtonian correspondence for spherical static configurations. General relativity solutions for stars are known as the Tolman-Oppenheimer-Volkoff (TOV) equations. On the other hand, the Newtonian description does not take into account the total pressure effects and therefore can not be used in strong field regimes. We discuss how to incorporate pressure in the stellar equilibrium equations within the neo-Newtonian framework. We compare the Newtonian, neo-Newtonian and the full relativistic theory by solving the equilibrium equations for both three approaches and calculating the mass-radius diagrams for some simple neutron stars equation of state.
description: 6 pages, 3 figures. v2 matches accepted version (EPJC)
ХАЛҚАРО МОЛИЯВИЙ ИНСТИТУТЛАР ТОМОНИДАН АЖРАТИЛГАН ИНВЕСТИЦИОН ЛОЙИҲАЛАР
Creators: name: Урозов, Абдуназар
Publisher: name: Zenodo
Year: 2023

description: Мақолада Халқаро молия институтлари билан ҳамкорликда мамлакатимизда олиб борилаётган инвестицион лойиҳалар. Ушбу инвестицион лойиҳаларнинг самарадорлик кўрсаткичлари ёритилган. Халқаро молия инстиутларининг турлари ва улар тўғрисида қисқа маълумотлар келтириб ўтилган.
Spin and energy currents in integrable and nonintegrable spin-1/2 chains: A typicality approach to real-time autocorrelations
Creators: name: Steinigeweg, Robin
name: Gemmer, Jochen
name: Brenig, Wolfram
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the concept of typicality to study the real-time dynamics of spin and energy currents in spin-1/2 models in one dimension and at nonzero temperatures. These chains are the integrable XXZ chain and a nonintegrable modification due to the presence of a staggered magnetic field oriented in z direction. In the framework of linear response theory, we numerically calculate autocorrelation functions by propagating a single pure state, drawn at random as a typical representative of the full statistical ensemble. By comparing to small-system data from exact diagonalization (ED) and existing short-time data from time-dependent density matrix renormalization group (tDMRG), we show that typicality is satisfied in finite systems over a wide range of temperature and is fulfilled in both, integrable and nonintegrable systems. For the integrable case, we calculate the long-time dynamics of the spin current and extract the spin Drude weight for large systems outside the range of ED. We particularly provide strong evidence that the high-temperature Drude weight vanishes at the isotropic point. For the nonintegrable case, we obtain the full relaxation curve of the energy current and determine the heat conductivity as a function of magnetic field, exchange anisotropy, and temperature.
description: 14 pages, 14 figures, accepted for publication in Phys. Rev. B
Magnetic vortex chirality switching in Permalloy nanowires with asymmetric notches
Creators: name: Brandão, J.
name: Novak, R. L.
name: Lozano, H.
name: Soledade, P. R.
name: Mello, A.
name: Garcia, F.
name: Sampaio, L. C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have investigated the motion of vortex domain walls passing across non symmetric triangular notches in single Permalloy nanowires. We have measured hysteresis cycles using the focused magneto-optical Kerr effect before and beyond the notch, which allowed to probe beyond the notch the occurrence probability of clockwise (CW) and counter-clockwise (CCW) walls in tail-to-tail (TT) and head-to-head (HH) configurations. We present experimental evidence of chirality flipping provided by the vortex -- notch interaction. With a low exit angle the probability of chirality flipping increases and here with the lowest angle of 15$^o$ the probability of propagation of the energetically favored domain wall configuration (CCW for TT or CW for HH walls) is $\approx 75\%$. Micromagnetic simulations reveal details of the chirality reversal dynamics.
description: 8 pages, 10 figures
title: Ο ρόλος και η εφαρμογή των ανανεώσιμων πηγών ενέργειας στις Ένοπλες Δυνάμεις
Creators: name: Ματσουκας Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2023

description: Η παρούσα διατριβή πραγματεύεται την επιρροή των ανανεώσιμων πηγών
ενέργειας (ΑΠΕ) στον τρόπο λειτουργείας των Ενόπλων Δυνάμεων (ΕΔ) μέχρι σήμερα και το ενδεχόμενο μεταβολής – αύξησής της. Αρχικά, πραγματοποιείται αναφορά στην ενέργεια, στο ενεργειακό πρόβλημα και στο φαινόμενο του θερμοκηπίου, τα οποία ταλανίζουν τη σημερινή εποχή ολόκληρη την ανθρωπότητα. Αναφορά πραγματοποιείται επίσης στη σχέση μεταξύ Στρατού και ενέργειας. Στη συνέχεια, αναλύονται τα είδη των ανανεώσιμων πηγών ενέργειας, ο τρόπος λειτουργίας τους, καθώς και τα πλεονεκτήματα που απορρέουν από την χρήση τους. Αποτυπώνεται η παρούσα κατάσταση στον χώρο των ΑΠΕ με τις τελευταίες σημερινές τάσεις. Επιπρόσθετα, παρουσιάζεται το ισχύον νομοθετικό πλαίσιο όσον αφορά στην ανάπτυξη των ΑΠΕ στην Ελλάδα και τα βήματα που έχουν πραγματοποιηθεί προς αυτόν τον ορίζοντα. Έπειτα, αναλύονται οι περιβαλλοντικές ευθύνες των ΕΔ, καθώς και η αναγκαιότητα της θέσης τους υπέρ της χρησιμοποίησης των ΑΠΕ. Επιπλέον, αναπτύσσεται η άμεση επαφή των ΑΠΕ με την εθνική ασφάλεια και με τον τρόπο λειτουργίας των στρατιωτικών επιχειρήσεων. Αναφέρονται ακόμα οι δράσεις του ΝΑΤΟ σε αυτόν τον τομέα. Επίσης, παρατίθενται σύγχρονες στρατιωτικές εφαρμογές, οι οποίες περιλαμβάνουν την αξιοποίηση τεχνολογιών ΑΠΕ και εκτείνονται σε όλο το φάσμα των στρατιωτικών δραστηριοτήτων. Χαρακτηριστικά παραδείγματα αποτελούν οι μεταφορές, επίγειες – θαλάσσιες, όπως και η κατανάλωση ρεύματος σε σταθμούς διοίκησης. Ολοκληρώνοντας, πραγματοποιείται μια διερεύνηση ως προς τη δυνατότητα εφαρμογής των τεχνολογιών ΑΠΕ στα ελληνικά στρατιωτικά δεδομένα. Ελέγχεται κατά πόσο καθίσταται εφικτή η αξιοποίηση των στρατιωτικών χώρων – εγκαταστάσεων για την ανάπτυξη των ΑΠΕ αναδεικνύοντας τα σημαντικά οφέλη που προκύπτουν.
Стадии подготовки Алтайского землетрясения (27. 09. 2003 г. , Мw = 7. 3) и связанные с ними изменения состояния сейсмогенной среды
Creators: name: Дядьков Петр Георгиевич
name: Кучай Ольга Анатольевна
name: Михеева Анна Владленовна
name: Романенко Юлия Михайловна
Publisher: name: Физическая мезомеханика
Year: 2010
Subjects: МЕХАНИКА ОЧАГА
СТАДИИ ПОДГОТОВКИ ЗЕМЛЕТРЯСЕНИЯ
ИЗМЕНЕНИЕ СВОЙСТВ СРЕДЫ

description: На основе детального анализа аномалий выделения сейсмической энергии (активизации и затишья), механизмов очагов землетрясений и ряда других параметров сейсмического режима выявлены три основных стадии подготовки Алтайского (Чуйского) землетрясения 2003 г., Мw = 7.3. Полученные результаты интерпретированы с точки зрения сопутствующих этим стадиям изменений состояния среды в области подготовки Алтайского землетрясения. Эволюция процесса подготовки сопровождалась возникновением региональной области затишья в начале 60-х годов прошлого столетия, образованием в 1986 г. локальной области затишья, оконтуривающей с юга ближнюю зону подготовки и, по всей видимости, являющейся следствием упрочнения земной коры в пределах этой области и активизацией с 1996 г. сейсмического процесса к югу от ближней зоны подготовки с постепенным распространением сейсмической активности к области будущего очага в последние 3 года перед главным событием.
Spin Orbit coupling and Anomalous Josephson effect in Nanowires
Creators: name: Campagnano, G.
name: Lucignano, P.
name: Giuliano, D.
name: Tagliacozzo, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A superconductor-semiconducting nanowire-superconductor heterostructure in the presence of spin orbit coupling and magnetic field can support a supercurrent even in the absence of phase difference between the superconducting electrodes. We investigate this phenomenon, the anomalous Josephson effect, employing a model capable of describing many bands in the normal region. We discuss geometrical and symmetry conditions required to have finite anomalous supercurrent and in particular we show that this phenomenon is enhanced when the Fermi level is located close to a band opening in the normal region.
description: 7+epsilon pages, 6 figures, Revised version
Electronic transport in disordered graphene antidot lattice devices
Creators: name: Power, Stephen R.
name: Jauho, Antti-Pekka
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Nanostructuring of graphene is in part motivated by the requirement to open a gap in the electronic band structure. In particular, a periodically perforated graphene sheet in the form of an antidot lattice may have such a gap. Such systems have been investigated with a view towards application in transistor or waveguiding devices. The desired properties have been predicted for atomically precise systems, but fabrication methods will introduce significant levels of disorder in the shape, position and edge configurations of individual antidots. We calculate the electronic transport properties of a wide range of finite graphene antidot devices to determine the effect of such disorders on their performance. Modest geometric disorder is seen to have a detrimental effect on devices containing small, tightly packed antidots, which have optimal performance in pristine lattices. Larger antidots display a range of effects which strongly depend on their edge geometry. Antidot systems with armchair edges are seen to have a far more robust transport gap than those composed from zigzag or mixed edge antidots. The role of disorder in waveguide geometries is slightly different and can enhance performance by extending the energy range over which waveguiding behavior is observed.
description: 16 pages, 13 figures, 1 table
Vidas e pedaladas inspiradoras em Niterói
Creators: name: Edra, Fátima
Publisher: name: Zenodo
Year: 2023

description: É comum olhar ciclistas pelas ruas e imaginar: isso não é para mim, tenho medo... A leitura deste material possibilita perceber que não é só isso. Pedalar também representa superação de desafios, levantar todos os dias e perceber que somos frágeis, mas que, ao pedalar, nos tornamos fortes. Aprende-se que a bicicleta une pessoas, casais e famílias. As histórias do livro são instrumentos de motivação para experienciar vidas e pedaladas inspiradoras.
PHENIX Beam Use Proposal for RHIC Runs 5-9
Creators: name: Zajc, William
Publisher: name: Zenodo
Year: 2004
Subjects: rhic
phenix
bup
run05
run06
run07
run08
run09
zdc
fcal
smd
d+au

description: PHENIX Beam Use Proposal for RHIC Runs 5 through 9, updated from the previous document for Runs 4 through 8.
Laser-Driven Localization of Collective CO Vibrations in Metal-Carbonyl Complexes
Creators: name: Lisaj, Mateusz
name: Kühn, Oliver
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Using the example of a cobalt dicarbonyl complex it is shown that two perpendicularly polarized IR laser pulses can be used to trigger an excitation of the delocalized CO stretching modes, which corresponds to an alternating localization of the vibration within one CO bond. The switching time for localization in either of the two bonds is determined by the energy gap between the symmetric and asymmetric fundamental transition frequencies. The phase of the oscillation between the two local bond excitations can be tuned by the relative phase of the two pulses. The extend of control of bond localization is limited by the anharmonicity of the potential energy surfaces leading to wave packet dispersion. This prevents such a simple pulse scheme from being used for laser-driven bond breaking in the considered example.
description: revised manuscript
Mach-like capillary-gravity wakes
Creators: name: Moisy, F.
name: Rabaud, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We determine experimentally the angle $α$ of maximum wave amplitude in the far-field wake behind a vertical surface-piercing cylinder translated at constant velocity $U$ for Bond numbers $\mathrm{Bo}_D = D / λ_c$ ranging between 0.1 and 4.2, where $D$ is the cylinder diameter and $λ_c$ the capillary length. In all cases the wake angle is found to follow a Mach-like law at large velocity, $α\sim U^{-1}$, but with different prefactors depending on the value of $\mathrm{Bo}_D$. For small $\mathrm{Bo}_D$ (large capillary effects), the wake angle approximately follows the law $α\simeq c_{\rm g,min} / U$, where $c_{\rm g,min}$ is the minimum group velocity of capillary-gravity waves. For larger $\mathrm{Bo}_D$ (weak capillary effects), we recover a law $α\sim \sqrt{gD}/U$ similar to that found for ship wakes at large velocity [Rabaud and Moisy, Phys. Rev. Lett. {\bf 110}, 214503 (2013)]. Using the general property of dispersive waves that the characteristic wavelength of the wavepacket emitted by a disturbance is of order of the disturbance size, we propose a simple model that describes the transition between these two Mach-like regimes as the Bond number is varied. We show that the new capillary law $α\simeq c_{\rm g,min} / U$ originates from the presence of a capillary cusp angle (distinct from the usual gravity cusp angle), along which the energy radiated by the disturbance accumulates for Bond numbers of order of unity. This model, complemented by numerical simulations of the surface elevation induced by a moving Gaussian pressure disturbance, is in qualitative agreement with experimental measurements.
Search for Scalar Diphoton Resonances in the Mass Range $65-600$ GeV with the ATLAS Detector in $pp$ Collision Data at $\sqrt{s}$ = 8 $TeV$
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for scalar particles decaying via narrow resonances into two photons in the mass range $65-600$ GeV is performed using 20.3 fb$^{-1}$ of $\sqrt{s}$ = 8 TeV $pp$ collision data collected with the ATLAS detector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a background. No significant evidence for an additional signal is observed. The results are presented as limits at the 95 % confidence level on the production cross-section of a scalar boson times branching ratio into two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of the event topology. The upper limits set extend over a considerably wider mass range than previous searches.
description: 5 pages plus author list + cover page (18 pages total), 4 figures, 2 tables, submitted to Physical Review Letters. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-04/
Additional file 1 of Survival analysis of patients with COVID-19 admitted at six hospitals in Uganda in 2021: a cohort study
Creators: name: Muyinda, Asad
name: Ingabire, Prossie M.
name: Nakireka, Susan
name: Tumuhaise, Criscent
name: Namulema, Edith
name: Bongomin, Felix
name: Napyo, Agnes
name: Sserwanja, Quraish
name: Ainembabazi, Rozen
name: Olum, Ronald
name: Nantale, Ritah
name: Akunguru, Phillip
name: Nomujuni, Derrick
name: Olwit, William
name: Musaba, Milton W.
name: Namubiru, Bridget
name: Aol, Pamela
name: Babigumira, Peter A.
name: Munabi, Ian
name: Kiguli, Sarah
name: Mukunya, David
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Figure 4. Intersection of symptoms experienced by COVID-19 patients hospitalized in selected hospitals in Uganda in 2021. Figure 5. Intersection of comorbidities of COVID-19 patients hospitalized in selected hospitals in Uganda in 2021. Figure 6. Intersection of medications given to COVID-19 patients hospitalized in selected hospitals in Uganda in 2021.