cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improving Energy Efficiency of Massive MIMO Relay Systems using Power Bisection Allocation for Cell-Edge Users
Creators: name: Koolivand, Mohammad
name: Bahonar, Mohammad Hossein
name: Fazel, Mohammad Sadegh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper studies downlink energy efficiency (EE) of a cellular massive Multiple Input Multiple Output (MIMO) system with massive number of antennas at both base station (BS) and relay considering cell-edge users which is less investigated in the literature. Some improving methods for base station (BS) and relay power allocation under quality of service constraints are proposed. The EE optimization problem is provided over BS and relay power variables (power dimensions). Considering the quasi-concavity property of the EE function relative to each power variable, we propose to use a power bisection algorithm (PBA) in one dimension, followed by the exhaustive search in the other dimension (ODS algorithm) which is called PBODS algorithm and also a method to limit the range of power variables. The results show that the performance of the PBODS algorithm approaches the performance of optimal solution which is exhaustive search in both dimensions while it has a lower complexity. In addition to that we suggest to use the PBA in two dimensions alternatively as the sub-optimal alternative optimization (AOP) algorithm. The complexity can highly be reduced using the AOP algorithm with a slight but acceptable degradation in performance which makes the algorithm much suitable for practical use.
A massive quiescent galaxy at redshift 4.658
Creators: name: Carnall, A. C.
name: McLure, R. J.
name: Dunlop, J. S.
name: McLeod, D. J.
name: Wild, V.
name: Cullen, F.
name: Magee, D.
name: Begley, R.
name: Cimatti, A.
name: Donnan, C. T.
name: Hamadouche, M. L.
name: Jewell, S. M.
name: Walker, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The extremely rapid assembly of the earliest galaxies during the first billion years of cosmic history is a major challenge for our understanding of galaxy formation physics. The advent of JWST has exacerbated this issue by confirming the existence of galaxies in significant numbers as early as the first few hundred million years. Perhaps even more surprisingly, in some galaxies, this initial highly efficient star formation rapidly shuts down, or quenches, giving rise to massive quiescent galaxies as little as 1.5 billion years after the Big Bang. However, due to their faintness and red colour, it has proven extremely challenging to learn about these extreme quiescent galaxies, or to confirm whether any exist at earlier times. Here we report the spectroscopic confirmation of a massive quiescent galaxy, GS-9209, at redshift $z=4.658$, just 1.25 billion years after the Big Bang, using JWST NIRSpec. From these data we infer a stellar mass of $M_* = 3.8\pm0.2\times10^{10}\ M_\odot$, which formed over a $\simeq200$ Myr period before this galaxy quenched its star formation activity at $z=6.5^{+0.2}_{-0.5}$, when the Universe was $\simeq800$ million years old. Based on the presence of broad H$α$ in the spectrum and a high narrow-line [NII]/H$α$ ratio, we infer the presence of an accreting supermassive black hole, with a mass of $M_\bullet = 5\pm1\times10^{8}\ M_\odot$. This large black hole mass relative to the stellar mass suggests that active galactic nucleus (AGN) feedback may have been responsible for quenching this galaxy. GS-9209 is also extremely compact, with an effective radius, $r_e=215\pm20$ parsecs. This galaxy is both a likely descendent of the highest-redshift submillimetre galaxies and quasars, and a likely progenitor for the dense, ancient cores of the most massive local galaxies.
description: 23 pages, 6 figures, 2 tables, accepted for publication in Nature
Indefinite Affine Hyperspheres Admitting a Pointwise Symmetry. Part 2
Creators: name: Scharlach, Christine
Publisher: name: arXiv
Year: 2009
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: An affine hypersurface $M$ is said to admit a pointwise symmetry, if there exists a subgroup $G$ of ${\rm Aut}(T_p M)$ for all $p\in M$, which preserves (pointwise) the affine metric $h$, the difference tensor $K$ and the affine shape operator $S$. Here, we consider 3-dimensional indefinite affine hyperspheres, i.e. $S= HId$ (and thus $S$ is trivially preserved). In Part 1 we found the possible symmetry groups $G$ and gave for each $G$ a canonical form of $K$. We started a classification by showing that hyperspheres admitting a pointwise ${\mathbb Z}_2\times {\mathbb Z}_2$ resp. ${\mathbb R}$-symmetry are well-known, they have constant sectional curvature and Pick invariant $J<0$ resp. J=0. Here, we continue with affine hyperspheres admitting a pointwise ${\mathbb Z}_3$- or SO(2)-symmetry. They turn out to be warped products of affine spheres (${\mathbb Z}_3$) or quadrics (SO(2)) with a curve.
Spectrum Trading for Device-to-Device Communication In Cellular Networks using Incomplete Information Bandwidth-Auction Game
Creators: name: Farshbafan, Mohammad Karimzadeh
name: Bahonar, Mohammad Hossein
name: Khajehrayeni, Farshid
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Device-to-device (D2D) communication that allows proximity users to communicate directly has been recently proposed to improve spectral efficiency of cellular networks. In this paper, we assume a cellular network consisting of multiple cellular user equipments (CUEs), which are the primary users, and a cognitive D2D pair, which is the secondary user. The D2D pair needs a bandwidth for data transmission that can be obtained via spectrum trading. We introduce a bandwidth-auction game for the spectrum trading problem. The base station (BS) and CUEs are able to sell their spectrum or share it with the D2D pair, which allows the D2D pair to operate in orthogonal sharing, cellular, or non-orthogonal sharing (NOS) modes. Operation of the D2D pair in the NOS mode causes interference to the CUEs, which is possible under low interference condition. In the auction, the D2D pair can buy its required spectrum from three different service providers (SPs) corresponding to each mode that operateon different frequency spectrums. The D2D pair bids a price bandwidth demand curve and the SPs offer a price-demand supply curve. Since each player is not aware of the strategy of other players in practical scenarios, the game is assumed to be an incomplete information repeated one. A best response based learning method is proposed for the decision making procedure of all players, the D2D pair and SPs. It is shown that the proposed method converges to the Nash equilibrium (NE) point of the game more rapidly than the state-of-the-art methods when the game is played repeatedly. The sensitivity of the proposed method to the learning rate variable is also less than the state-of-the-art methods and hence can be considered as a robust one.
MPEC 2024-S141 : 2021 PK3
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

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.
Perturbative Quantum Gravity Induced Scalar Coupling to Electromagnetism
Creators: name: Katuwal, S.
name: Woodard, R. P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Physicists working on atom interferometers are interested in scalar couplings to electromagnetism of dimensions 5 and 6 which might be induced by quantum gravity. There is a widespread belief that such couplings can only be induced by conjectured non-perturbative effects, resulting in unknown coupling strengths. In this letter we exhibit a completely perturbative mechanism through which quantum gravity induces dimension six couplings with precisely calculable coefficients.
description: 7 pages, no figures, uses LaTeX2e. Version 2 slightly revised for publication
Distributed pricing-based resource allocation for dense device-to-device communications in beyond 5G networks
Creators: name: Bahonar, Mohammad Hossein
name: Omidi, Mohammad Javad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Considering the dramatic increase of data rate demand in beyond fifth generation (5G) networks due to the numerous transmitting nodes, dense device-to-device (D2D) communications where multiple D2D pairs can simultaneously reuse a cellular link can be considered as a communication paradigm for future wireless networks. Since distributed methods can be more practical compared to complex centralized schemes, we propose a low-complexity distributed pricing-based resource allocation algorithm to allocate power to cellular user equipments (CUEs) and D2D pairs constrained to the minimum quality-of-service (QoS) requirements of CUEs and D2D pairs in two phases. The price of each link is set by the base station (BS). CUEs and D2D pairs maximize their rate-and-interference-dependent utility function by adjusting their power in the first phase, while the price of each link is updated at the BS based on the minimum QoS requirements of CUEs and D2D pairs in the second phase. The proposed utility function controls D2D admission, hence it is suitable for dense scenarios. The proposed method is fast due to the closed-form solution for the first phase power allocation. Numerical results verify the effectiveness of the proposed method for practical dense beyond 5G scenarios by allocating resources to multiple D2D pairs and taking advantage of the spatial reuse gain of D2D pairs. Furthermore, the utility function definition is discussed to illustrate its effectiveness for SE maximization. Finally, the SE of the proposed method is compared to other centralized and distributed algorithms to demonstrate the higher sum-rate performance of the proposed algorithm.
description: Transactions on Emerging Telecommunications Technologies (2021), 25 Pages
Varanus samarensis Koch et al. 2010
Creators: name: Welton, Luke J.
name: Travers, Scott L.
name: Siler, Cameron D.
name: Brown, Rafe M.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Squamata
Varanidae
Varanus
Varanus samarensis

description: Varanus samarensis Koch et al. 2010
 Synonymy. Varanus cumingi samarensis Koch et al., 2010. Zootaxa 2446, 19 – 23.
 Holotype.— ZFMK 64713, subadult male, collected by M. Gaulke 1989, San Augustin near Gandara, Samar Island, Philippines.
 New material examined.—Samar (1 specimen): KU 310870 (CDS Field No. 2654), adult male, collected by Cameron D. Siler, 13 October 2007, Barangay San Rafael, Municipality of Taft, Eastern Samar Province, Samar Island, Philippines; Bohol (1 specimen): KU 335263 (CDS Field No. 4768), adult male, collected by Cameron D. Siler, 0 4 August 2009, Barangay Danicop, Municipality of Sierra Bullones, Bohol Province, Bohol Island, Philippines.
 Other material. —Refer to Koch et al. (2010b).
 Diagnosis. —Following the findings of Koch et al. (2010b), Varanus samarensis can be distinguished from other members of the V. salvator Complex by a combination of (1) distinctive dorsal color pattern of 5–8 transverse bands of yellow ocelli or spots through the trunk; (2) a dark (black) head dorsally, with symmetrical yellow markings; (3) a variable black stripe in the temporal region, occasionally bordered by a bright (yellow-white) stripe ventrally; (4) the absence of a medio-dorsal stripe on the lateral surfaces of the nuchal region and trunk; (5) narial openings positioned approximately 2.5 times closer to the tip of the snout than to the ocular.
 Comment and justification. —Although within the same PAIC (Brown & Diesmos 2009), the Samar–Leyte versus Mindanao Island biogeographical boundary (informally referred to as the “Dinagat–Caraga Filter Zone”) has been evoked in several previous studies to explain the existence of deep phylogenetic splits between the northern and southern reaches of the Mindanao faunal region (Steppan et al. 2003; Hosner et al. 2013, 2014; Brown et al. 2013, 2014). We therefore do not find it surprising that Samar, Leyte, Bohol (and, presumably, smaller associated lanmasses) have a distinctive species of monitor lizard that apparently is isolated from Mindanao’s Varanus cumingi (Welton et al. 2013a, b).
 Distribution. —See Koch et al. (2010b) for additional data about variation, ecology, and distribution.
description: Published as part of Welton, Luke J., Travers, Scott L., Siler, Cameron D. & Brown, Rafe M., 2014, Integrative taxonomy and phylogeny-based species delimitation of Philippine water monitor lizards (Varanus salvator Complex) with descriptions of two new cryptic species, pp. 201-227 in Zootaxa 3881 (3) on page 221, DOI: 10.11646/zootaxa.3881.3.1, http://zenodo.org/record/226203
Global shallow water magnetohydrodynamic waves in the solar tachocline
Creators: name: Zaqarashvili, T. V.
name: Oliver, R.
name: Ballester, J. L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We derive analytical solutions and dispersion relations of global magnetic Poincaré (magneto-gravity) and magnetic Rossby waves in the approximation of shallow water magnetohydrodynamics. The solutions are obtained in a rotating spherical coordinate system for strongly and weakly stable stratification separately in the presence of toroidal magnetic field. In both cases magnetic Rossby waves split into fast and slow magnetic Rossby modes. In the case of strongly stable stratification (valid in the radiative part of the tachocline) all waves are slightly affected by the layer thickness and the toroidal magnetic field, while in the case of weakly stable stratification (valid in the upper overshoot layer of the tachocline) magnetic Poincaré and fast magnetic Rossby waves are found to be concentrated near the solar equator, leading to equatorially trapped waves. However, slow magnetic Rossby waves tend to concentrate near the poles, leading to polar trapped waves. The frequencies of all waves are smaller in the upper weakly stable stratification region than in the lower strongly stable stratification one.
Low-Complexity Resource Allocation for Dense Cellular Vehicle-to-Everything (C-V2X) Communications
Creators: name: Bahonar, Mohammad Hossein
name: Omidi, Mohammad Javad
name: Yanikomeroglu, Halim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Vehicular communications are the key enabler of traffic reduction and road safety improvement referred to as cellular vehicle-to-everything (C-V2X) communications. Considering the numerous transmitting entities in next generation cellular networks, most existing resource allocation algorithms are impractical or non-effective to ensure reliable C-V2X communications which lead to safe intelligent transportation systems. We study a centralized framework to develop a low-complexity, scalable, and practical resource allocation scheme for dense C-V2X communications. The NP-hard sum-rate maximization resource allocation problem is formulated as a mixed-integer non-linear non-convex optimization problem considering both cellular vehicular links (CVLs) and non-cellular VLs (NCVLs) quality-of-service (QoS) constraints. By assuming that multiple NCVLs can simultaneously reuse a single cellular link (CL), we propose two low-complexity sub-optimal matching-based algorithms in four steps. The first two steps provide a channel gain-based CVL priority and CL assignment followed by an innovative scalable min-max channel-gain-based CVL-NCVL matching. We propose an analytically proven closed-form fast feasibility check theorem as the third step. The objective function is transformed into a difference of convex (DC) form and the power allocation problem is solved optimally using majorization-minimization (MaMi) method and interior point methods as the last step. Numerical results verify that our schemes are scalable and effective for dense C-V2X communications. The low-complexity and practicality of the proposed schemes for dense cellular networks is also shown. Furthermore, it is shown that the proposed schemes outperform other methods up to %6 in terms of overall sum-rate in dense scenarios and have a near optimal performance.
description: Accepted and to be published in IEEE Open Journal of the Communications Society 2021, 18 Double Column Pages
A Modified Scalar-Tensor-Vector Gravity Theory and the Constraint on its Parameters
Creators: name: Deng, Xue-Mei
name: Xie, Yi
name: Huang, Tian-Yi
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A gravity theory called scalar-tensor-vector gravity (STVG) has been recently developed and succeeded in solar system, astrophysical and cosmological scales without dark matter [J. W. Moffat, J. Cosmol. Astropart. Phys. 03, 004 (2006)]. However, two assumptions have been used: (i) $B(r)=A^{-1}(r)$, where $B(r)$ and $A(r)$ are $g_{00}$ and $g_{rr}$ in the Schwarzschild coordinates (static and spherically symmetric); (ii) scalar field $G=Const.$ in the solar system. These two assumptions actually imply that the standard parametrized post-Newtonian parameter $γ=1$. In this paper, we relax these two assumptions and study STVG further by using the post-Newtonian (PN) approximation approach. With abandoning the assumptions, we find $γ\neq1$ in general cases of STVG. Then, a version of modified STVG (MSTVG) is proposed through introducing a coupling function of scalar field G: $θ(G)$. We have derived the metric and equations of motion (EOM) in 1PN for general matter without specific equation of state and $N$ point masses firstly. Subsequently, the secular periastron precession $\dotω$ of binary pulsars in harmonic coordinates is given. After discussing two PPN parameters ($γ$ and $β$) and two Yukawa parameters ($α$ and $λ$), we use $\dotω$ of four binary pulsars data (PSR B1913+16, PSR B1534+12, PSR J0737-3039 and PSR B2127+11C) to constrain the Yukawa parameters for MSTVG: $λ=(3.97\pm0.01)\times10^{8}$m and $α=(2.40\pm0.02)\times10^{-8}$ if we fix $|2γ-β-1|=0$.
description: 39 pages, 4 figures, accepted by PRD
MPEC 2024-S142 : 2021 UZ9
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

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.
Linear Jacobi-Legendre expansion of the charge density for machine learning-accelerated electronic structure calculations
Creators: name: Focassio, Bruno
name: Domina, Michelangelo
name: Patil, Urvesh
name: Fazzio, Adalberto
name: Sanvito, Stefano
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Kohn-Sham density functional theory (KS-DFT) is a powerful method to obtain key materials' properties, but the iterative solution of the KS equations is a numerically intensive task, which limits its application to complex systems. To address this issue, machine learning (ML) models can be used as surrogates to find the ground-state charge density and reduce the computational overheads. We develop a grid-centred structural representation, based on Jacobi and Legendre polynomials combined with a linear regression, to accurately learn the converged DFT charge density. This integrates into a ML pipeline that can return any density-dependent observable, including energy and forces, at the quality of a converged DFT calculation, but at a fraction of the computational cost. Fast scanning of energy landscapes and producing starting densities for the DFT self-consistent cycle are among the applications of our scheme.
Translation-symmetry protected topological orders on lattice
Creators: name: Kou, Su-Peng
name: Wen, Xiao-Gang
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this paper we systematically study a simple class of translation-symmetry protected topological orders in quantum spin systems using slave-particle approach. The spin systems on square lattice are translation invariant, but may break any other symmetries. We consider topologically ordered ground states that do not spontaneously break any symmetry. Those states can be described by Z2A or Z2B projective symmetry group. We find that the Z2A translation symmetric topological orders can still be divided into 16 sub-classes corresponding to 16 new translation-symmetry protected topological orders. We introduced four $Z_2$ topological indices $ζ_{ǩ}=0,1$ at $\v {k}=(0,0)$, $(0,π)$, $(π, 0)$, $(π,π)$ to characterize those 16 new topological orders. We calculated the topological degeneracies and crystal momenta for those 16 topological phases on even-by-even, even-by-odd, odd-by-even, and odd-by-odd lattices, which allows us to physically measure such topological orders. We predict the appearance of gapless fermionic excitations at the quantum phase transitions between those symmetry protected topological orders. Our result can be generalized to any dimensions. We find 256 translation-symmetry protected Z2A topological orders for a system on 3D lattice.
Optofluidic ptychography on a chip
Creators: name: Song, Pengming
name: Guo, Chengfei
name: Jiang, Shaowei
name: Wang, Tianbo
name: Hu, Patrick
name: Hu, Derek
name: Zhang, Zibang
name: Feng, Bin
name: Zheng, Guoan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report the implementation of a fully on-chip, lensless microscopy technique termed optofluidic ptychography. This imaging modality complements the miniaturization provided by microfluidics and allows the integration of ptychographic microscopy into various lab-on-a-chip devices. In our prototype, we place a microfluidic channel on the top surface of a coverslip and coat the bottom surface with a scattering layer. The channel and the coated coverslip substrate are then placed on top of an image sensor for diffraction data acquisition. Similar to the operation of flow cytometer, the device utilizes microfluidic flow to deliver specimens across the channel. The diffracted light from the flowing objects is modulated by the scattering layer and recorded by the image sensor for ptychographic reconstruction, where high-resolution quantitative complex images are recovered from the diffraction measurements. By using an image sensor with a 1.85-micron pixel size, our device can resolve the 550 nm linewidth on the resolution target. We validate the device by imaging different types of biospecimens, including C. elegans, yeast cells, paramecium, and closterium sp. We also demonstrate high-resolution ptychographic reconstruction at a video framerate of 30 frames per second. The reported technique can address a wide range of biomedical needs and engenders new ptychographic imaging innovations in a flow cytometer configuration.
description: 8 pages; 7 figures
Droplet motion with contact-line friction: long-time asymptotics in complete wetting
Creators: name: Giacomelli, Lorenzo
name: Gnann, Manuel V.
name: Peschka, Dirk
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35C06, 35K65, 76M10, 76A20

description: We consider the thin-film equation for a class of free boundary conditions modelling friction at the contact line, as introduced by E and Ren. Our analysis focuses on formal long-time asymptotics of solutions in the perfect wetting regime. In particular, through the analysis of quasi-self-similar solutions, we characterize the profile and the spreading rate of solutions depending on the strength of friction at the contact line, as well as their (global or local) corrections, which are due to the dynamical nature of the free boundary conditions. These results are complemented with full transient numerical solutions of the free boundary problem.
Isoscaling behavior in $^{48,40}$Ca+$^{9}$Be collisions at intermediate energy investigated by HIPSE model
Creators: name: Fu, Y.
name: Fang, D. Q.
name: Ma, Y. G.
name: Cai, X. Z.
name: Tian, W. D.
name: Wang, H. W.
name: Guo, W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The fragment production cross sections for 140 MeV/nucleon $^{48,40}$Ca$+^{9}$Be reactions have been calculated by the Heavy Ion Phase Space Exploration (HIPSE) model. Isoscaling behavior is observed. The isoscaling parameters $α$ and $β$ for both heavy and light fragments from HIPSE model calculations are in good agreement with the experiment data. Studies show that the potential parameters in the HIPSE model have very small effect on the isoscaling parameters. The effect of the excitation energy and evaporation on the isoscaling behavior has also been discussed.
description: 5 pages, 5 figures
MPEC 2024-S143 : 2023 UE4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

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.
Meson-Nucleon Coupling from AdS/QCD
Creators: name: Maru, Nobuhito
name: Tachibana, Motoi
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this manuscript, a unified approach to hadron physics from holographic point of view is described. After introduction of a general setup for meson-nucleon system based on the bottom-up approach of QCD (AdS/QCD), as an illustration, we specifically examine meson-nucleon couplings. This is an example of the notion we call "holographic unification" in hadron physics.
description: 20 pages, final version to appear in EPJC
Comparing iterative methods to compute the overlap Dirac operator at nonzero chemical potential
Creators: name: Bloch, Jacques
name: Breu, Tobias
name: Wettig, Tilo
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The overlap Dirac operator at nonzero quark chemical potential involves the computation of the sign function of a non-Hermitian matrix. In this talk we present iterative Krylov subspace approximations, with deflation of critical eigenvalues, which we developed to compute the operator on large lattices. We compare the accuracy and efficiency of two alternative approximations based on the Arnoldi and on the two-sided Lanczos method. The short recurrences used in the latter method make it faster and more effective for realistic lattice simulations.
description: 7 pages, talk presented at the XXVI International Symposium on Lattice Field Theory, July 14 - 19, 2008, Williamsburg, Virginia, USA
 Althea Gyles’ Symbolic (De)Codification of William Butler Yeats’ ‘Rose and Wind Poetry’
Creators: name: Antonielli, Arianna
Publisher: name: Biblioteca di Studi di Filologia Moderna: Series, Journals and Workshop
Year: 2011

description: In 1897, Yeats’s The Secret Rose was published in London by Lawrence & Bullen, while two years later, in 1899, the London editor Elkin Mathews published The Wind Among the Reeds. Both volumes are extremely interesting, not only for their acknowledged poetical value but also for their material worth. This is due to their elaborate designs: gold stamps on the spine and cover 1897 edition of the Secret Rose and intertwining reeds on The Wind Among the Reeds cover. Both  were done by the Irish artist Althea Gyles (1867-1949). Gyles was frequently described by Yeats as a “symbolic artist” producing a “symbolic art” (Memoirs: Autobiography – A First Draft, 1972). Her paintings deeply influenced Yeats’s symbolical and imaginary system, to such a degree that they formed its perfect iconic counterpart. Following this hypothesis, Antonielli concentrates on Yeats’s main esoteric topoi, symbols and images emerging from the poems in The Secret Rose and The Wind Among the Reeds, and on their ‘translation’ into Althea Gyles’s iconic visions and artistic output. She examines how Yeats’s poems were clarified or further complicated by Gyles’s corresponding designs and how Yeats and Gyles, through their own peculiar artistic expressions, exemplified a shared symbolic vision of phenomenal reality.
description: Studi irlandesi. A Journal of Irish Studies, No 1 (2011)
A note on nonperturbative renormalization of effective field theory
Creators: name: Yang, J. -F.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Within the realm of contact potentials, the key structures intrinsic of nonperturbative renormalization of $T$-matrices are unraveled using rigorous solutions and an inverse form of algebraic Lippmann-schwinger equation. The intrinsic mismatches between effective field theory power counting and nonperturbative divergence structures are shown for the first time to preclude the conventional counterterm algorithm from working in the renormalization of EFT for $NN$ scattering in nonperturbative regimes.
description: 6 pages, no figure, version to appear in J.Phys.A
Seamus Heaney’s Revelation of Self Through Community
Creators: name: Moore, Sharon
Publisher: name: Biblioteca di Studi di Filologia Moderna: Series, Journals and Workshop
Year: 2011

description: The study is based on the argument that a sound knowledge of a writer’s personal psychological development is just as enlightening as historical and political contexts.  This psychoanalytical approach applies the theory of Object Relations to determine early attachments and identification processes, and leads to fresh readings of Heaney’spoems.  References cover a span of forty years from Death of a Naturalist (1966) to District and Circle (2006). Heaney’s poetry presents self, parents, ancestors, and community as interdependent elements and his sense of self is ultimately revealed through identification with his first experiences of community.  The poet’s search for harmony and unity also acknowledges the tension, paradoxes, and problems associated with self-discovery.  Recognising and accepting the darkness of past lives as formative, the poet constantly strives for self-knowledge, harmony, and catharsis.
description: Studi irlandesi. A Journal of Irish Studies, No 1 (2011)
Steroidogenesis and the role of steroids in the endocrine control of oogenesis and vitellogenesis in the goldfish, Carassius Auratus
Creators: name: Khoo, Khay Huat
Publisher: name: University of British Columbia
Year: 2010

description: In this thesis I studied the role of ovarian steroids in oogenesis and ovarian development of goldfish (Carassius auratus L.) and examined the interrelationship of pituitary gonadotropin and ovarian steroids in the endocrine control of teleost reproduction. There are four main parts to the investigation: (i) the cytological analysis of vitellogene-sis, (ii) the demonstration of steroidogenic tissues in the ovary and their endocrine control, (iii) the development and functions of the corpus luteum, and (iv) the role of ovarian steroids on oogenesis and vitel-logenesis. The histological and histochemical examination demonstrated that two types of yolk inclusions are formed during vitellogenesis: yolk vesicles, comprised of mucopolysaccharides, and first formed, followed subsequently by yolk granules composed of proteins, phospholipids and neutral lipids. Neither type of yolk develops in the absence of the pituitary; estrogen regulates the formation of yolk vesicles while pregnenolone was found to control deposition of yolk granules. The significance of these two kinds of yolk is considered. This is the first demonstration of two yolk types in goldfish with a separate endocrine control for the formation of each of them. The major steroid synthesizing tissues in goldfish ovaries are the granulosa cells of oocytes and the corpus luteum. The corpus luteum, whether pre- or post-ovulatory probably synthesizes estrogens. In this study, no functional differences were established between pre- and post- ovulatory corpora lutea. Treatment of post-ovulatory goldfish with tritiated thymidine strongly suggests that the corpora luteal cells proliferate to form another generation of oogonia. Estrogens are probably active hormones in this reaction. The implications of these new findings are discussed. Administration of exogenous estrogen increases oogonia formation in post-ovulatory goldfish whereas chronic administration of estrogens or testosterone into gravid fish induces extensive atresia. Treatment of gravid fish with progesterone or corticosteroids induces ovulation. As a working hypothesis it is proposed that steroids are synthesized by the ovaries under gonadotropin stimulation. Pituitary gonadotropin regulates the whole ovarian steroid synthetic process and not any specific reaction in the steroid metabolic pathways. The synthesis of specific steroids during the reproductive cycle is brought about by localized inhibition of steroidogenic enzymes by steroids, most likely estrogens. The potential practical applications of endocrine manipulations in fish reproduction are discussed.
MPEC 2024-S144 : 2024 BR4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

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.
Machine Learning Benchmarks for the Classification of Equivalent Circuit Models from Electrochemical Impedance Spectra
Creators: name: Schaeffer, Joachim
name: Gasper, Paul
name: Garcia-Tamayo, Esteban
name: Gasper, Raymond
name: Adachi, Masaki
name: Gaviria-Cardona, Juan Pablo
name: Montoya-Bedoya, Simon
name: Bhutani, Anoushka
name: Schiek, Andrew
name: Goodall, Rhys
name: Findeisen, Rolf
name: Braatz, Richard D.
name: Engelke, Simon
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 68T10

description: Analysis of Electrochemical Impedance Spectroscopy (EIS) data for electrochemical systems often consists of defining an Equivalent Circuit Model (ECM) using expert knowledge and then optimizing the model parameters to deconvolute various resistance, capacitive, inductive, or diffusion responses. For small data sets, this procedure can be conducted manually; however, it is not feasible to manually define a proper ECM for extensive data sets with a wide range of EIS responses. Automatic identification of an ECM would substantially accelerate the analysis of large sets of EIS data. We showcase machine learning methods to classify the ECMs of 9,300 impedance spectra provided by QuantumScape for the BatteryDEV hackathon. The best-performing approach is a gradient-boosted tree model utilizing a library to automatically generate features, followed by a random forest model using the raw spectral data. A convolutional neural network using boolean images of Nyquist representations is presented as an alternative, although it achieves a lower accuracy. We publish the data and open source the associated code. The approaches described in this article can serve as benchmarks for further studies. A key remaining challenge is the identifiability of the labels, underlined by the model performances and the comparison of misclassified spectra.
description: Manuscript: 17 pages, 9 figures; Supplementary Information: 9 pages, 6 figures
Upsilon production in d+Au collisions at STAR
Creators: name: Liu, Haidong
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the analysis of $Υ\to e^{+}e^{-}$ production in d+Au collisions at $\sqrt{s_{NN}} = 200$ GeV from the STAR experiment. Using higher level dedicated $Υ$ triggers, STAR has sampled 32 nb$^{-1}$ of integrated luminosity in year 2008 d+Au run. The cross section is found as $BR\times{({{dσ}\over{dy}})}_{y=0}^{Υ(1S+2S+3S)}=35\pm4(stat.)\pm5(sys.)$ nb and it is consistent with NLO CEM prediction with anti-shadowing effects. In addition we calculated the nuclear modification factor $R_{dAu}=0.98\pm0.32(stat.)\pm0.28(sys.)$, which suggests the $Υ(1S+2S+3S)$ production follows $N_{bin}$ scaling.
description: 4 pages, 2 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee (Updated v1)
Topological study of three-jet events in ALICE
Creators: name: Pochybova, Sona
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ALICE experiment at LHC is dedicated to study matter formed in heavy-ion collisions, but also has a strong physics program for $pp$ collisions. In these collisions, protons will collide at energies never reached before under laboratory conditions. At the high energies, ALICE will enable us to study jet physics in detail, especially the production of multiple jet events, setting the baseline for heavy-ion. Three-jet events allow us to examine the properties of quark and gluon jets, providing a suitable tool for testing QCD experimentally. We discuss the selection method and topology of three-jet events in ALICE. The analysis was performed on two PYTHIA data sets, both involving $pp$ collisions at $\sqrt{s} = 14$ TeV with enhanced jet production. The results from the dedicated jet MC production are discussed and compared to previous studies at CDF and DØ. We investigate the possibilities to determine gluon jet candidates.
description: 9 pages, 5 figures, contribution to the "High-Pt Physics at LHC '09" workshop in Prague
Post-Wick theorems for symbolic manipulation of second-quantized expressions in atomic many-body perturbation theory
Creators: name: Derevianko, Andrei
Publisher: name: arXiv
Year: 2009
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Manipulating expressions in many-body perturbation theory becomes unwieldily with increasing order of the perturbation theory. Here I derive a set of theorems for efficient simplification of such expressions. The derived rules are specifically designed for implementing with symbolic algebra tools. As an illustration, we count the numbers of Brueckner-Goldstone diagrams in the first several orders of many-body perturbation theory for matrix elements between two states of a mono-valent system.
description: J. Phys. B. (in press); Mathematica packages available from http://wolfweb.unr.edu/homepage/andrei/WWW-tap/mathematica.html
Integrating Gender Dimensions in the Myanmar Climate-Smart Villages
Creators: name: Dayo, Maria Helen
name: Barbon, Wilson John
name: Thant, Phyu Sin
name: Gonsalves, Julian
Publisher: name: Zenodo
Year: 2021
Subjects: climate change
climate smart villages
Myanmar
Gender dimensions
smallholder agriculture

description: The Climate-Smart Village (CSV) features a participatory platform that helps address climate change impacts on agriculture in farming communities, taking into consideration the climate-smart agriculture (CSA) options which are ecologically, culturally and gender-responsive. Its design includes providing a portfolio of practices, technologies and innovations that address food security, adaptation and mitigation and support services. In 2017, the International Institute of Rural Reconstruction (IIRR) established four CSVs designed to serve as action research, learning and demonstration sites for engaging partner communities in community-based adaptation. The CSA program in Myanmar put a special attention to studying and responding to the needs of women in smallholder agriculture, their involvement in livelihood activities in the midst of climate-hazards and risks; the study attempted to draw implications for ensuring equal opportunities for women in CSA.
Experimental joint weak measurement on a photon pair as a probe of Hardy's Paradox
Creators: name: Lundeen, J. S.
name: Steinberg, A. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It has been proposed that the ability to perform joint weak measurements on post-selected systems would allow us to study quantum paradoxes. These measurements can investigate the history of those particles that contribute to the paradoxical outcome. Here, we experimentally perform weak measurements of joint (i.e. nonlocal) observables. In an implementation of Hardy's Paradox, we weakly measure the locations of two photons, the subject of the conflicting statements behind the Paradox. Remarkably, the resulting weak probabilities verify all these statements but, at the same time, resolve the Paradox.
TA'LIMDA KREATIV VA TANQIDIY YONDASHUV FAOLIYAT MAZMUNI
Creators: name: Toxirov, Abrorbek
name: G'aniyeva, Malika
name: Alijonova, Zulxumor
Publisher: name: Zenodo
Year: 2025

description: Bugungi kunda mamlakatimiz Oʻzbekistonda ta’lim sifatini yanada takomillashtirish va tubdan isloh qilish boʻyicha bir qancha strategiyali yondashuvlar amalga oshirilmoqda. Shu jumladan, ta’limda kreativ va tanqidiy yondashuvning dolzarbligi ham diqqatimiz markazidan joy olmoqda. Bu yondashuv asosida boʻlajak pedagog kadrlar salohiyatini yanada oshirish va ta’lim sifati samaradorligini takomillashtirish mumkin . Ushbu maqolada ta’limda kreativ va tanqidiy yondashuv innovatsion faoliyat mazmuni haqida toʻliqligicha ma’lumot berib oʻtilgan.
The Promotion of Climate-Smart Villages to Support Community- Based Adaptation Programming in Myanmar
Creators: name: Barbon, Wilson John
name: Vidallo, Rene
name: Gonsalves, Julian
Publisher: name: Zenodo
Year: 2017
Subjects: climate smart agriculture
climate change
agriculture
food security

description: This report presents the highlights of a scoping study conducted by the International Institute of Rural Reconstruction (IIRR) in Myanmar. The study was funded by CCAFS in support of a plan to test and develop climate-smart villages in Myanmar. In 2015, through the initiative of CCAFS and after consultations with various agencies, the Myanmar Ministry of Agriculture and Irrigation adopted the Myanmar Climate-Smart Agriculture Strategy (MCSAS). This document lays out climate change impacts to agriculture in the country in broad terms, as well as the vision and goals of making agriculture in Myanmar climate-smart.
Parton fluxes and virtual pions in heavy nuclei
Creators: name: Calucci, Giorgio
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The partonic flux originated from a heavy nucleus is not the mere sum of the fluxes coming from the individual nucleons. There are various effects that give rise to modifications. One of these effects is here investigated i.e. the presence of a cloud of virtual pions co-moving with the nucleus. It is found that the contribution of these virtual particles to the total parton flux should be rather small even if one includes the contribution of resonances.
description: 14 pages, no figures
Gravitational Interaction in the Chimney Lattice Universe
Creators: name: Eingorn, Maxim
name: McLaughlin, Andrew
name: Canay, Ezgi
name: Brilenkov, Maksym
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the influence of the chimney topology $T\times T\times R$ of the Universe on the gravitational potential and force that are generated by point-like massive bodies. We obtain three distinct expressions for the solutions. One follows from Fourier expansion of delta functions into series using periodicity in two toroidal dimensions. The second one is the summation of solutions of the Helmholtz equation, for a source mass and its infinitely many images, which are in the form of Yukawa potentials. The third alternative solution for the potential is formulated via the Ewald sums method applied to Yukawa-type potentials. We show that, for the present Universe, the formulas involving plain summation of Yukawa potentials are preferable for computational purposes, as they require a smaller number of terms in the series to reach adequate precision.