cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Kinetic and radiative power from optically thin accretion flows
Creators: name: Sadowski, A.
name: Gaspari, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We perform a set of general relativistic, radiative, magneto-hydrodynamical simulations (GR-RMHD) to study the transition from radiatively inefficient to efficient state of accretion on a non-rotating black hole. We study ion to electron temperature ratios ranging from $T_{\rm i}/T_{\rm e}=10$ to $100$, and simulate flows corresponding to accretion rates as low as $10^{-6}\dot M_{\rm Edd}$, and as high as $10^{-2}\dot M_{\rm Edd}$. We have found that the radiative output of accretion flows increases with accretion rate, and that the transition occurs earlier for hotter electrons (lower $T_{\rm i}/T_{\rm e}$ ratio). At the same time, the mechanical efficiency hardly changes and accounts to ${\approx}\,3\%$ of the accreted rest mass energy flux, even at the highest simulated accretion rates. This is particularly important for the mechanical AGN feedback regulating massive galaxies, groups, and clusters. Comparison with recent observations of radiative and mechanical AGN luminosities suggests that the ion to electron temperature ratio in the inner, collisionless accretion flow should fall within $10
description: 7 pages, 3 figures; accepted in MNRAS
0543 529 72 06 düşük yaptıran hap cytotec misoprostol 200 mg orjinal düşük hapı al
Creators: name: düşük hapı türkiye bayii satış noktası, 0543 529 72 06
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 321403
subject: Clinical pharmacy and pharmacy practice

description: DÜŞÜK HAPI SATIN AL 0543 529 72 06 Düşük hapı sipariş ver-satın al Cytotec düşük hapı sipariş : 0543 529 72 06 Orjinal barkodlu Cytotec 200 mcg düşük hapı ile hamileliğinizi 12 saat içinde bitirebilirsiniz. Cytotec misoprostol 200 mcg ülkemizde hiç bir eczane’de kesinlikle satılmamaktadır. Sipariş hattını aramadana önce test yaptırıp gebeliğinizden emin olunuz. Cytotec 200 mcg en iyi çocuk düşürme yöntemidir. Orjinal cytotec 200 mcg Bebek Düşürme Çocuk düşürme Hapı satın al, sipariş ver. Düşük hapı:0543 529 72 06 Yeni başlangıç gebelikleri bitirmek için orijinal Cytotec satın al Ru-486 ilacı sipariş satış satın al satın alma sipariş verme seçeneklerinin yanı sıra misoprostol satın al Cytotec 200 mcg sipariş ver. Ru-486 sipariş ver Medabon satın al Lentonil sipariş ver Dilbaz hapı satın al Gibi çeşitli alternatiflerden faydalanmak isteyen çok hamile gebe bayanlar mevcuttur. Öyle ki sağlıklı düşük yapmak amacıyla hap kullanmak oldukça uzun süredir popülerliğini kaybetmemiştir. Özelliklede yoğun bir nüfusa sahip olan ülkelerde, böyle ilaçlar yaygın Bir şekilde kullanılmaktadır. Buna paralel olarak ise vurgulamak isteriz ki günümüzde de düşük ilacı kullanan gebe hamile bayan sayısında sürekli aşırı yoğun bir şekilde artış gözlenmiştir. Cytotec misoprostol sipariş ver. Ru-486 sipariş ver. Medabon satın al. Lentonil sipariş ver. Dilbaz hapı satış. Misepristone satın al. sipariş ver satışı istenmeyen gebeliklerde düşük yapmak için kullanılan ilaçlardır. Bu tür ilaçların yanı sıra bilinen bir diğer ilaç ise Orjinal Ru-486’dır. Garantili Ru-486 satın al Garantili Cytotec düşük hapı Orijinal çocuk düşürme Hapı satın al orijinal Bebek Düşürme hapı sipariş Orijinal Misoprostol Orijinal Misoprostone Orijinal Dilbaz orijinal Lentonil orijinal Medabondur Cytotec’ten farkı ise etken maddesinin sınıfları mg Larının Farklı olmasıdır. Bu İçerikler
Interpreting the 3 TeV $WH$ Resonance as a $W'$ boson
Creators: name: Cheung, Kingman
name: Keung, Wai-Yee
name: Lu, Chih-Ting
name: Tseng, Po-Yan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Motivated by a local $3.2-3.4$ sigma resonance in $WH$ and $ZH$ in the ATLAS Run 2 data, we attempt to interpret the excess in terms of a $W'$ boson in a $SU(2)_1 \times SU(2)_2 \times U(1)_X$ model. We stretch the deviation from the alignment limit of the Equivalence Theorem, so as to maximize $WH$ production while keeping the $WZ$ production rate below the experimental limit. We found a viable though small region of parameter space that satisfies all existing constraints on $W' \to jj, t \bar b, WZ$, as well as the precision Higgs data. The cross section of $W' \to WH$ that we obtain is about $5-6$ fb.
description: 14 pages, 2 figures
All for One, or One for All A Comparative Evaluation of the Role of Social Relations in Explaining Individual versus Group Participation in the Radicalization and Terrorism Process of Far-Right Actors in the United States.
Creators: name: Wippell, Jack G. R.
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: extremism
subject: terrorism
subject: far-right
subject: social relations
subject: radicalization

description: The traditional conception of lone-actor terrorists is that they radicalize and commit violence alone. Recent work has challenged this view, identifying both extremist and non-extremist social relations as core aspects of lone-actor radicalization. The implications of this reinterpretation, however, remain underexplored. This paper combines a recognition of lone- actors as social beings and observed variations in social relations between far-right lone- and group-actors to sharpen our understanding of the radicalization and terrorism process across the whole population of far-right ideologically motivated violent actors. Specifically, it argues that variations in social relations can, to a degree, explain why some radicalize and/or act alone versus within groups, and develops a theory of the mechanisms through which this takes effect. This is achieved through the application of comparative process tracing to four case studies of far-right perpetrators, each selected from a novel typology of radical actors that further specifies the lone- versus group-actor distinction. This paper has important implications, both in terms of the approach used and the lessons it raises for counter-terrorism policy.
Stability of Singularity-free Cosmological Solutions in Hořava-Lifshitz Gravity
Creators: name: Misonoh, Yosuke
name: Fukushima, Mitsuhiro
name: Miyashita, Shoichiro
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study stability of singularity-free cosmological solutions with positive cosmological constant based on projectable Hořava-Lifshitz (HL) theory. In HL theory, the isotropic and homogeneous cosmological solutions with bounce can be realized if spacial curvature is non-zero. By performing perturbation analysis around non-flat Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime, we derive a quadratic action and discuss the stability, i.e, ghost and tachyon-free conditions. Although the squared effective mass of scalar perturbation must be negative in infrared regime, we can avoid tachyon instability by considering strong Hubble friction. Additionally, we estimate the backreaction from the perturbations on background geometry, especially, against anisotropic perturbation in closed FLRW spacetime. It turns out that certain types of bouncing solution may be spoiled even if all perturbation modes are stable.
description: 22 pages, 8 figures ; v3 : some results modified
A coupled finite and boundary spectral element method for linear water-wave propagation problems
Creators: name: Cerrato, Antonio
name: Rodríguez-Tembleque, Luis
name: González, José A.
name: Aliabadi, M. H. Ferri
Publisher: name: arXiv
Year: 2025
Subjects: subject: Numerical Analysis (math.NA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A coupled boundary spectral element method (BSEM) and spectral element method (SEM) formulation for the propagation of small-amplitude water waves over variable bathymetries is presented in this work. The wave model is based on the mild-slope equation (MSE), which provides a good approximation of the propagation of water waves over irregular bottom surfaces with slopes up to 1:3. In unbounded domains or infinite regions, space can be divided into two different areas: a central region of interest, where an irregular bathymetry is included, and an exterior infinite region with straight and parallel bathymetric lines. The SEM allows us to model the central region, where any variation of the bathymetry can be considered, while the exterior infinite region is modelled by the BSEM which, combined with the fundamental solution presented by Cerrato et al. [A. Cerrato, J. A. González, L. Rodríguez-Tembleque, Boundary element formulation of the mild-slope equation for harmonic water waves propagating over unidirectional variable bathymetries, Eng. Anal. Boundary Elem. 62 (2016) 22-34.] can include bathymetries with straight and parallel contour lines. This coupled model combines important advantages of both methods; it benefits from the flexibility of the SEM for the interior region and, at the same time, includes the fulfilment of the Sommerfeld's radiation condition for the exterior problem, that is provided by the BSEM. The solution approximation inside the elements is constructed by high order Legendre polynomials associated with Legendre-Gauss-Lobatto quadrature points, providing a spectral convergence for both methods. The proposed formulation has been validated in three different benchmark cases with different shapes of the bottom surface. The solutions exhibit the typical p-convergence of spectral methods.
0543 529 72 06 düşük yaptıran hap cytotec misoprostol 200 mg orjinal düşük hapı
Creators: name: düşük hapı türkiye bayii satış noktası, 0543 529 72 06
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 321403
subject: Clinical pharmacy and pharmacy practice

description: DÜŞÜK HAPI SATIN AL 0543 529 72 06 Düşük hapı sipariş ver-satın al Cytotec düşük hapı sipariş : 0543 529 72 06 Orjinal barkodlu Cytotec 200 mcg düşük hapı ile hamileliğinizi 12 saat içinde bitirebilirsiniz. Cytotec misoprostol 200 mcg ülkemizde hiç bir eczane’de kesinlikle satılmamaktadır. Sipariş hattını aramadana önce test yaptırıp gebeliğinizden emin olunuz. Cytotec 200 mcg en iyi çocuk düşürme yöntemidir. Orjinal cytotec 200 mcg Bebek Düşürme Çocuk düşürme Hapı satın al, sipariş ver. Düşük hapı:0543 529 72 06 Yeni başlangıç gebelikleri bitirmek için orijinal Cytotec satın al Ru-486 ilacı sipariş satış satın al satın alma sipariş verme seçeneklerinin yanı sıra misoprostol satın al Cytotec 200 mcg sipariş ver. Ru-486 sipariş ver Medabon satın al Lentonil sipariş ver Dilbaz hapı satın al Gibi çeşitli alternatiflerden faydalanmak isteyen çok hamile gebe bayanlar mevcuttur. Öyle ki sağlıklı düşük yapmak amacıyla hap kullanmak oldukça uzun süredir popülerliğini kaybetmemiştir. Özelliklede yoğun bir nüfusa sahip olan ülkelerde, böyle ilaçlar yaygın Bir şekilde kullanılmaktadır. Buna paralel olarak ise vurgulamak isteriz ki günümüzde de düşük ilacı kullanan gebe hamile bayan sayısında sürekli aşırı yoğun bir şekilde artış gözlenmiştir. Cytotec misoprostol sipariş ver. Ru-486 sipariş ver. Medabon satın al. Lentonil sipariş ver. Dilbaz hapı satış. Misepristone satın al. sipariş ver satışı istenmeyen gebeliklerde düşük yapmak için kullanılan ilaçlardır. Bu tür ilaçların yanı sıra bilinen bir diğer ilaç ise Orjinal Ru-486’dır. Garantili Ru-486 satın al Garantili Cytotec düşük hapı Orijinal çocuk düşürme Hapı satın al orijinal Bebek Düşürme hapı sipariş Orijinal Misoprostol Orijinal Misoprostone Orijinal Dilbaz orijinal Lentonil orijinal Medabondur Cytotec’ten farkı ise etken maddesinin sınıfları mg Larının Farklı olmasıdır.
The Knowledge Café as a Case Method in Synchronous Online Classroom – "The OD Consultant at Animens" Case Study
Creators: name: Yawson, Robert
name: Osafo, Emmanuel
name: Berko, Obi Damoah
name: Yarney, Lily
Publisher: name: Zenodo
Year: 2023

description: The Knowledge Cafe Approach is a participatory and collaborative method for group dialogue and idea exchange. It is a valuable pedagogical tool in management education, providing a structured and engaging way for students to share and explore ideas and perspectives on complex management issues. We developed the Knowledge Café approach as an alternative to the World Café approach for synchronous online classroom use. Using a case study, we illustrate how the Knowledge Café can be used as a Case Method in a synchronous online classroom. Animens Industries Ltd is located in the port city of Takoradi in Ghana. It was established in 1972 as the first wholly Ghanaian-owned distilleries and bottling company. The Animens Case Study was developed to serve as a universal case study but specifically to students in Africa and Ghana especially. Students generally respond positively to the Knowledge Café exercise, as it provides a structured and engaging way to share ideas, collaborate with peers, and learn from one another. Students often find the activity a valuable learning experience that helps them develop critical thinking, communication, and collaboration skills.
Analytical Spectral Density of the Sachdev-Ye-Kitaev Model at finite N
Creators: name: García-García, Antonio M.
name: Verbaarschot, Jacobus J. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We show analytically that the spectral density of the $q$-body Sachdeev-Ye-Kitaev (SYK) model agrees with that of Q-Hermite polynomials with Q a non-trivial function of $q \ge 2$ and the number of Majorana fermions $N \gg 1$. Numerical results, obtained by exact diagonalization, are in excellent agreement with the analytical spectral density even for relatively small $N \sim 8$. For $N \gg 1$ and not close to the edge of the spectrum, we find the macroscopic spectral density simplifies to $ρ(E) \sim \exp[2\arcsin^2(E/E_0)/\log η]$, where $η$ is the suppression factor of the contribution of intersecting Wick contractions relative to nested contractions. This spectral density reproduces the known result for the free energy in the large $q$ and $N$ limit. In the infrared region, where the SYK model is believed to have a gravity-dual, the spectral density is given by $ρ(E) \sim \sinh[2π\sqrt 2 \sqrt{(1-E/E_0)/(-\log η)}]$. It therefore has a square-root edge, as in random matrix ensembles, followed by an exponential growth, a distinctive feature of black holes and also of low energy nuclear excitations. Results for level-statistics in this region confirm the agreement with random matrix theory. Physically this is a signature that, for sufficiently long times, the SYK model and its gravity dual evolve to a fully ergodic state whose dynamics only depends on the global symmetry of the system. Our results strongly suggest that random matrix correlations are a universal feature of quantum black holes and that the SYK model, combined with holography, may be relevant to model certain aspects of the nuclear dynamics.
description: 18 pages, 5 figures, corrected typos, added references and an explicit calculation of the partition function
Congestion Management in High-Performance Interconnection Networks Using Adaptive Routing Notifications
Creators: name: Rocher-Gonzalez, Jose
name: Escudero-Sahuquillo, Jesus
name: Garcia, Pedro J.
name: Quiles, Francisco J.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The interconnection network is a crucial subsystem in High-Performance Computing clusters and Data-centers, guaranteeing high bandwidth and low latency to the applications' communication operations. Unfortunately, congestion situations may spoil network performance unless the network design applies specific countermeasures. Adaptive routing algorithms are a traditional approach to dealing with congestion since they provide traffic flows with alternative routes that bypass congested areas. However, adaptive routing decisions at switches are typically based on local information without a global network traffic perspective, leading to congestion spreading throughout the network beyond the original congested areas. In this paper, we propose a new efficient congestion management strategy that leverages adaptive routing notifications currently available in some interconnect technologies and efficiently isolates the congesting flows in reserved spaces at switch buffers. The experiment results based on simulations of realistic traffic scenarios show that our proposal removes the congestion impact.
description: 34 pages
Reciprocity-driven Sparse Network Formation
Creators: name: Tsoukatos, Konstantinos P.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: A resource exchange network is considered, where exchanges among nodes are based on reciprocity. Peers receive from the network an amount of resources commensurate with their contribution. We assume the network is fully connected, and impose sparsity constraints on peer interactions. Finding the sparsest exchanges that achieve a desired level of reciprocity is in general NP-hard. To capture near-optimal allocations, we introduce variants of the Eisenberg-Gale convex program with sparsity penalties. We derive decentralized algorithms, whereby peers approximately compute the sparsest allocations, by reweighted l1 minimization. The algorithms implement new proportional-response dynamics, with nonlinear pricing. The trade-off between sparsity and reciprocity and the properties of graphs induced by sparse exchanges are examined.
description: 19 pages
Cavity Detection Tool (CADET)
Creators: name: Plšek, Tomáš
Publisher: name: Zenodo
Year: 2022
Subjects: X-ray cavities
radio galaxy
machine learning

description: The study of jet-inflated X-ray cavities provides a powerful insight into the energetics of atmospheres of early-type galaxies and the AGN feedback phenomenon. Properly estimating their total extent is, however, non-trivial, prone to biases and nearly impossible for poor-quality data. For these reasons, we have decided to harness the power of machine learning to tackle this problem. Using artificially generated images, we have trained a convolutional neural network to produce pixel-wise predictions capturing both the position and extent of detected X-ray cavities. Furthermore, we present how the network performs on real Chandra images of early-type galaxies.
Science for All and All for Science.
Creators: name: Gold, Margaret
Publisher: name: Zenodo
Year: 2023

description: Science for all, and all for science Citizen Science, of ook wel burgerwetenschap, is wetenschappelijk onderzoek waarbij burgers samen werken met onderzoekers door een actieve bijdrage te leveren aan onderzoek - bijvoorbeeld door data te helpen versamelen. Vele handen maken licht werk! Maar ook kunnen burgers hun eigen inzichten en lokale kennis delen met de onderzoeker voor een grotere impact van het onderzoek op de samenleving. Denk hierbij aan luchtkwaliteit of publieke gezondheid. In deze workshop kom je een aantaal voorbeelden tegen, en wij gaan samen in gesprek over hoe Citizen Science de kwaliteit van onderzoek kan verbeteren. Misschien wordt jij zelf burgerwetenschapper! Wetenschapscongres Het Wetenschapscongres voor vwo vindt plaats op 31 mei 2023. Informatie en inspiratie voor profielwerkstukken Zit je in 4 of 5 vwo? Dan kun je deelnemen aan het Wetenschapscongres voor vwo en workshops volgen ter inspiratie op het nog te schrijven profielwerkstuk. Op deze pagina vind je meer informatie over het congres en het aanmeldingsformulier. Zit je in 6 vwo? Dan kun je tijdens het Wetenschapscongres voor vwo een presentatie houden over je profielwerkstuk en meedingen naar de prijs voor de beste onderzoekspresentatie. Op deze pagina vind je meer informatie over het congres en het aanmeldingsformulier.
Plasma Constraints on the Cosmological Abundance of Magnetic Monopoles and the Origin of Cosmic Magnetic Fields
Creators: name: Medvedev, Mikhail V.
name: Loeb, Abraham
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Existing theoretical and observational constraints on the abundance of magnetic monopoles are limited. Here we demonstrate that an ensemble of monopoles forms a plasma whose properties are well determined and whose collective effects place new tight constraints on the cosmological abundance of monopoles. In particular, the existence of micro-Gauss magnetic fields in galaxy clusters and radio relics implies that the scales of these structures are below the Debye screening length, thus setting an upper limit on the cosmological density parameter of monopoles, $Ω_M\lesssim3\times10^{-4}$, which precludes them from being the dark matter. Future detection of Gpc-scale coherent magnetic fields could improve this limit by a few orders of magnitude. In addition, we predict the existence of magnetic Langmuir waves and turbulence which may appear on the sky as "zebra patterns" of an alternating magnetic field with ${\bf k\cdot B}\not=0$. We also show that magnetic monopole Langmuir turbulence excited near the accretion shock of galaxy clusters may be an efficient mechanism for generating the observed intracluster magnetic fields.
description: 7 pages, 1 figure, JCAP, in press
Storytelling: Generational Losses in Translation of IDEA Concepts and Terminologies
Creators: name: Sprinkle, Therese
name: Yawson, Robert
Publisher: name: Zenodo
Year: 2024

description: Through the use of generational storytelling, our multi-layered exercise is designed to bridge gaps in the inclusion, diversity, equity and accessibility conversations. In doing so, students become aware of all that has been gained, and begin planning for the next phase of acceptance and inclusion. We begin by challenging the students on statements made about inclusion and equity from readings and textbooks. Stories are then shared from across generations to provide the IDEA definitions each different working generation has used. Finally, students are challenged to craft a path forward, to identify what steps are needed next.
Ion motion in a polarized current sheet
Creators: name: Tsai, Ethan
name: Artemyev, Anton
name: Angelopoulos, Vassilis
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We consider the effects of a polarization electric field on transient ion motion in a thin current sheet. Using adiabatic invariants, we analytically describe a variety of ion trajectories in current sheet configurations which include a local minimum or maximum of the scalar potential in the central region. Ions in the current sheet can either be trapped or ejected more efficiently than in an unpolarized current sheet, depending on the sign and magnitude of the polarization electric field. We derive an expression for the relative phase space volume filled by transient particles as a function of the electric field amplitude. This expression allows us to estimate the dependence of transient particle and current densities on the electric field. We discuss applicability of these results for current sheets observed in planetary magnetospheres.
description: 12 Pages, 17 figures, appears in AIP POP Feb 2017 Vol 24 Issue 2. Relevant Topics: solar-system plasma, magnetosphere, solar-system plasma, magnetotail, magnetic reconnection, mathematical foundations, kinetic theory, mathematical foundations, particle dynamics
MPEC 2023-E70 : 2023 EU
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 EU

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Tambour à deux peaux clouées sur cadre avec chapelet de grelots. Vue générale de droite
Creators: name: Musée National Des Arts Et Traditions Populaires (Paris)
name: Centre D'ethnologie Française
Publisher: name: École des Hautes Études en Sciences Sociales; Institut  interdisciplinaire d'anthropologie du contemporain (Paris); Laboratoire d'anthropologie et d'histoire de l'institution de la culture (Paris)
Year: 2022

Abstract
Dynamical coupling between protein conformational fluctuation and hydration water: Heterogeneous dynamics of biological water
Creators: name: Mondal, Sayantan
name: Mukherjee, Saumyak
name: Bagchi, Biman
Publisher: name: arXiv
Year: 2017
Subjects: subject: Biomolecules (q-bio.BM)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We investigate dynamical coupling between water and amino acid side-chain residues in solvation dynamics by selecting residues often used as natural probes, namely tryptophan, tyrosine and histidine, located at different positions on protein surface and having various degrees of solvent exposure. Such differently placed residues are found to exhibit different timescales of relaxation. The total solvation response, as measured by the probe is decomposed in terms of its interactions with (i) protein core, (ii) side-chain atoms and (iii) water molecules. Significant anti cross-correlations among these contributions are observed as a result of side-chain assisted energy flow between protein core and hydration layer, which is important for the proper functionality of a protein. It is also observed that there are rotationally faster as well as slower water molecules than that of bulk solvent, which are considered to be responsible for the multitude of timescales that are observed in solvation dynamics. We also establish that slow solvation derives a significant contribution from protein side-chain fluctuations. When the motion of the protein side-chains is forcefully quenched, solvation either becomes faster or slower depending on the location of the probe.
description: 12 pages and 6 figures(coloured)
GMC Collisions as Triggers of Star Formation. III. Density and Magnetically Regulated Star Formation
Creators: name: Wu, Benjamin
name: Tan, Jonathan C.
name: Christie, Duncan
name: Nakamura, Fumitaka
name: Van Loo, Sven
name: Collins, David
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study giant molecular cloud (GMC) collisions and their ability to trigger star cluster formation. We further develop our three dimensional magnetized, turbulent, colliding GMC simulations by implementing star formation sub-grid models. Two such models are explored: (1) "Density-Regulated," i.e., fixed efficiency per free-fall time above a set density threshold; (2) "Magnetically-Regulated," i.e., fixed efficiency per free-fall time in regions that are magnetically supercritical. Variations of parameters associated with these models are also explored. In the non-colliding simulations, the overall level of star formation is sensitive to model parameter choices that relate to effective density thresholds. In the GMC collision simulations, the final star formation rates and efficiencies are relatively independent of these parameters. Between non-colliding and colliding cases, we compare the morphologies of the resulting star clusters, properties of star-forming gas, time evolution of the star formation rate (SFR), spatial clustering of the stars, and resulting kinematics of the stars in comparison to the natal gas. We find that typical collisions, by creating larger amounts of dense gas, trigger earlier and enhanced star formation, resulting in 10 times higher SFRs and efficiencies. The star clusters formed from GMC collisions show greater spatial sub-structure and more disturbed kinematics.
description: 22 pages, 10 figures, Accepted for publication in ApJ
Access via laboratory experiments to the level mixing effect induced by blackbody radiation and its influence on the cosmological hydrogen recombination problem
Creators: name: Zalialiutdinov, T.
name: Solovyev, D.
name: Labzowsky, L.
name: Plunien, G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: An effect of atomic line broadening induced by the blackbody radiation is discussed. The level mixing effect and anti-Stokes Raman scattering are compared. It is shown that the mixing effect gives the most significant contribution to the line broadening and it is indicated how to distinguish these two effects in laboratory experiments. The influence of the level mixing on the recombination history of primordial plasma is also discussed.
Numerical treatment of spin systems with unrestricted spin length $S$: A functional renormalization group study
Creators: name: Baez, M. L.
name: Reuther, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop a generalized pseudo-fermion functional renormalization group (PFFRG) approach that can be applied to arbitrary Heisenberg models with spins ranging from the quantum case $S=1/2$ to the classical limit $S\rightarrow\infty$. Within this framework, spins of magnitude $S$ are realized by implementing $M=2S$ copies of spin-1/2 degrees of freedom on each lattice site. We confirm that even without explicitly projecting onto the highest spin sector of the Hilbert space, ground states tend to select the largest possible local spin magnitude. This justifies the average treatment of the pseudo fermion constraint in previous spin-1/2 PFFRG studies. We apply this method to the antiferromagnetic $J_1$-$J_2$ honeycomb Heisenberg model with nearest neighbor $J_1>0$ and second neighbor $J_2>0$ interactions. Mapping out the phase diagram in the $J_2/J_1$-$S$ plane we find that upon increasing $S$ quantum fluctuations are rapidly decreasing. In particular, already at $S=1$ we find no indication for a magnetically disordered phase. In the limit $S\rightarrow\infty$, the known phase diagram of the classical system is exactly reproduced. More generally, we prove that for $S\rightarrow\infty$ the PFFRG approach is identical to the Luttinger-Tisza method.
description: 14 pages, 13 figures
Energy demands of diverse spiking cells from the neocortex, hippocampus, and thalamus
Creators: name: Moujahid, Abdelmalik
name: D'Anjou, Alicia
name: Graña, Manuel
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: It has long been known that neurons in the brain are not physiologically homogeneous. In response to current stimulus, they can fire several distinct patterns of action potentials that are associated with different physiological classes ranging from regular-spiking cells, fast-spiking cells, intrinsically bursting cells, and low-threshold cells. In this work we show that the high degree of variability in firing characteristics of action potentials among these cells is accompanied with a significant variability in the energy demands required to restore the concentration gradients after an action potential. The values of the metabolic energy were calculated for a wide range of cell temperatures and stimulus intensities following two different approaches. The first one is based on the amount of Na+ load crossing the membrane during a single action potential, while the second one focuses on the electrochemical energy functions deduced from the dynamics of the computational neuron models. The results show that the thalamocortical relay neuron is the most energy-efficient cell consuming between 7 and 18 nJ/cm2 for each spike generated, while both the regular and fast spiking cells from somatosensory cortex and the intrinsically-bursting cell from a cat visual cortex are the least energy-efficient, and can consume up to 100 nJ/cm2 per spike. The lowest values of these energy demands were achieved at higher temperatures and high external stimuli.
Fine-structure transitions as a tool for studying variation of alpha at high redshifts
Creators: name: Levshakov, S. A.
name: Kozlov, M. G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Star-forming galaxies at high redshifts are the ideal targets to probe the hypothetical variation of the fine-structure constant alpha over cosmological time scales. We propose a modification of the alkali doublets method which allows us to search for variation in alpha combining far infrared and submillimeter spectroscopic observations. This variation manifests as velocity offsets between the observed positions of the fine-structure and gross-structure transitions when compared to laboratory wavelengths. Here we describe our method whose sensitivity limit to the fractional changes in alpha is about 5*10^-7. We also demonstrate that current spectral observations of hydrogen and [C II] 158 micron lines provide an upper limit on |Delta alpha/alpha| < 6*10^-5 at redshifts z = 3.1 and z = 4.7.
description: 4 pages, accepted for publication in MNRAS Letters
Measurements of integrated and differential cross sections for isolated photon pair production in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A measurement of the production cross section for two isolated photons in proton-proton collisions at a center-of-mass energy of $\sqrt{s}=8$ TeV is presented. The results are based on an integrated luminosity of 20.2 fb$^{-1}$ recorded by the ATLAS detector at the Large Hadron Collider. The measurement considers photons with pseudorapidities satisfying $|η^γ|<1.37$ or ${1.5640$ GeV and $E_{\mathrm{T,2}}^γ>30$ GeV for the two leading photons ordered in transverse energy produced in the interaction.The background due to hadronic jets and electrons is subtracted using data-driven techniques. The fiducial cross sections are corrected for detector effects and measured differentially as a function of six kinematic observables. The measured cross section integrated within the fiducial volume is $16.8 \pm 0.8$ pb. The data are compared to fixed-order QCD calculations at next-to-leading-order and next-to-next-to-leading-order accuracy as well as next-to-leading-order computations including resummation of initial-state gluon radiation at next-to-next-to-leading logarithm or matched to a parton shower, with relative uncertainties varying from 5% to 20%.
description: 39 pages in total, author list starting page 23, 5 figures, 2 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2015-15/
Structural scale $q-$derivative and the LLG-Equation in a scenario with fractionality
Creators: name: Weberszpil, José
name: Helayël-Neto, José Abdalla
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the present contribution, we study the Landau-Lifshitz-Gilbert equation with two versions of structural derivatives recently proposed: the scale $q-$derivative in the non-extensive statistical mechanics and the axiomatic metric derivative, which presents Mittag-Leffler functions as eigenfunctions. The use of structural derivatives aims to take into account long-range forces, possible non-manifest or hidden interactions and the dimensionality of space. Having this purpose in mind, we build up an evolution operator and a deformed version of the LLG equation. Damping in the oscillations naturally show up without an explicit Gilbert damping term.
description: 10 pages, 3 figures
An Approximation Method for the Scattering Data of One-Dimensional Soliton Equations under Arbitrary Rapidly-Decreasing Initial Pulses
Creators: name: Fujishima, Hironobu
name: Yajima, Tetsu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We present a novel approximation method that can predict the number of solitons asymptotically appearing under arbitrary rapidly decreasing initial wave packets. The number of solitons can be estimated without integration of the original soliton equations. As an example, we take the one-dimensional nonlinear Schrodinger equation and estimate the behaviors of the scattering amplitude in detail. The results show good agreement compared with those obtained by direct numerical integration. The presented method is applicable to a wide class of one-dimensional soliton equations.
description: to appear in Journal of the Physical Society of Japan
Implications of Mixed Axion-Neutralino Dark Matter
Creators: name: Serce, Hasan
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The lack of evidence for weak scale supersymmetry from LHC Run-I and Run-II results along with null results from direct/indirect dark matter detection experiment have caused a paradigm shift in expected phenomenology of SUSY models. The SUSY dark matter candidate, neutralino $\widetilde{Z}_1$, can only satisfy the measured dark matter abundance due to resonance- and co-annihilations in cMSSM model. Moreover, viable parameter space is highly fine-tuned in the cMSSM. In models that can still satisfy the naturalness condition such as NUHM2, the neutralino is underproduced due to its higgsino nature. Neutralino combined with axion that solves the strong CP problem can explain the observed dark matter in the universe. Here I briefly discuss implications of the mixed axion-neutralino scenario.
description: 8 pages, 6 figures, to appear in the proceedings of the CETUP* 2016
DEVELOPMENT OF E-COMMERCE IN RUSSIA: THE INFLUENCE OF COVID-19 PANDEMIC
Creators: name: Batorova, A.B.
Publisher: name: Международный журнал гуманитарных и естественных наук
Year: 2023
Subjects: E-COMMERCE
CORONAVIRUS
CONSUMER BEHAVIOR
TREND ANALYSIS
TIME SERIES ANALYSIS
FORECAST

description: E-commerce and its development are one of the most important trends in the development of the Russian economy. This scientific work focuses on identifying the key changes in the dynamics of the sales volume of E-commerce in the Russian Federation in 2011-2022 and aims to forecast the sales volumes for 2023. The influence of the coronavirus pandemic on the dynamics of the development of E-commerce is given an assessment. The final conclusions are formulated within the framework of research problems.
Magneto-plasmonic pesponse of nickel nano-rings prepared by electroless method
Creators: name: Poursharif, Akram
name: Sahebsara, Peyman
name: Monirvaghefi, Seyyed Mahmood
name: Kharaziha, Seyedeh Mehri Hamidi Mahshid
name: Bagheri, Masih
Publisher: name: arXiv
Year: 2025
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Magneto-plasmonic nanostructures have emerged as promising candidates for advanced sensing applications. However, conventional fabrication methods, such as lithography and sputtering, often involve high costs and complex processes. This study introduces a novel approach for fabricating nickel nano-rings (200-600 nm in diameter) utilizing nanosphere lithography and selective electroless deposition on ITO substrates. The resulting nickel-silver-boron (Ni-Ag-B) nanoarrays exhibit uniform, durable coatings with robust covalent bonds, providing a simpler, more cost-effective alternative to traditional methods. The unique ring-shaped geometry of the nano-rings enhances plasmonic effects by concentrating the electromagnetic field, thus outperforming other nanostructures. Unlike thin films, these nano-rings demonstrate surface plasmon resonance (SPR) within the 470-614 nm range when illuminated at a 45$^°$ incident angle. Moreover, ellipsometry parameter calculations and Magneto-Optical Kerr Effect (MOKE) measurements revealed narrow Full Width at Half Maximum (FWHM) peaks at 512 nm and 560 nm, indicating superior sensitivity for detection compared to conventional SPR and ellipsometry-SPR techniques. Finite element simulations using COMSOL provided valuable insight into the influence of magnetic fields on the electromagnetic response of the nano-rings, confirming their potential for optical communication and highly sensitive sensing technologies. This study addresses limitations in existing magneto-plasmonic systems, offering a scalable and innovative solution for the development of next-generation sensing applications.
description: 24 pages, 7 figures
THE CONCEPT OF "CHILD" IN THE ENGLISH AND KYRGYZ PICTURE OF THE WORLD
Creators: name: Berdibekova, A.N.
name: Samidinova, F.A.
name: Kudaiberdieva, G.O.
name: Zulpukarova, A.K.
Publisher: name: Международный журнал гуманитарных и естественных наук
Year: 2023
Subjects: CONCEPT
PICTURE OF THE WORLD
PAREMIOLOGY
LINGUOCULTUROLOGY
ETHNIC
LANGUAGE

description: The article analyzes the structure of the concept of "child" in the English and Kyrgyz pictures of the world according to the associative experiment. The similarity of the nuclear zone of the concept is revealed, which confirms its high universal value. It also gives a linguistic and cultural description of the paremic material of the Kyrgyz and English languages, which consolidated the knowledge and ideas about the child, his ties with his parents and their relationships. An attempt is made to organize proverbs and sayings in the paremiological field in order to identify the cognitive features of the concept under study.
Particle production in proton-nucleus collisions beyond leading order
Creators: name: Iancu, E.
name: Mueller, A. H.
name: Triantafyllopoulos, D. N.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We describe the origin of, and the solution to, the negativity problem which occurs in the perturbative calculation of the cross-section for single-inclusive particle production in proton-nucleus collisions at next-to-leading-order.
description: 5 pages, 4 figures. Proceedings for the 26th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2017), February 5-11 2017, Chicago, Illinois, USA
HYBRID EDUCATIONAL TECHNOLOGIES: TREND OR NEW REALITY?
Creators: name: Kambaralieva, D.O.
name: Zhusupaliev, K.
name: Attokurova, Z.
name: Zulpukarova, A.K.
Publisher: name: Международный журнал гуманитарных и естественных наук
Year: 2023
Subjects: EDUCATION
HYBRID TECHNOLOGY
BLENDED LEARNING
HYBRID EDUCATION
E-LEARNING
INTERACTIVE LEARNING

description: The article deals with the problem of organizing the work of a teacher in the so-called hybrid form of education. Authors reveal the role of e-learning in the educational process, focusing on the actualization of hybrid technology, and offer a set of rules for creating a successful hybrid learning environment. Also possibilities and prospects of application of mixed and hybrid educational technologies in education institutions are being considered. Models of mixed and hybrid learning and possibilities of their integration into the educational process are investigated.
Closed-loop estimation of retinal network sensitivity reveals signature of efficient coding
Creators: name: Ferrari, Ulisse
name: Gardella, Christophe
name: Marre, Olivier
name: Mora, Thierry
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: According to the theory of efficient coding, sensory systems are adapted to represent natural scenes with high fidelity and at minimal metabolic cost. Testing this hypothesis for sensory structures performing non-linear computations on high dimensional stimuli is still an open challenge. Here we develop a method to characterize the sensitivity of the retinal network to perturbations of a stimulus. Using closed-loop experiments, we explore selectively the space of possible perturbations around a given stimulus. We then show that the response of the retinal population to these small perturbations can be described by a local linear model. Using this model, we computed the sensitivity of the neural response to arbitrary temporal perturbations of the stimulus, and found a peak in the sensitivity as a function of the frequency of the perturbations. Based on a minimal theory of sensory processing, we argue that this peak is set to maximize information transmission. Our approach is relevant to testing the efficient coding hypothesis locally in any context where no reliable encoding model is known.
A Double Vacuum Window Mechanism for Space-borne Applications
Creators: name: Zilic, K.
name: Aboobaker, A.
name: Aubin, F.
name: Geach, C.
name: Hanany, S.
name: Jarosik, N.
name: Milligan, M.
name: Sagiv, I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a vacuum window mechanism that is useful for applications requiring two different vacuum windows in series, with one of them movable and resealable. Such applications include space borne instruments that can benefit from a thin vacuum window at low ambient pressures, but must also have an optically open aperture at atmospheric pressures. We describe the implementation and successful operation with the EBEX balloon-borne payload, a millimeter-wave instrument designed to measure the polarization of the cosmic microwave background radiation.
description: 7 pages, 6 Figures, Published in Review of Scientific Instruments