cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Control of multiscale systems with constraints. 2. Fractal nuclear isomers and clusters
Creators: name: Adamenko, S.
name: Bolotov, V.
name: Novikov, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We consider the influence of the Fermi statistics of nucleons on the binding energy of a new type of nuclear structures such as fractal nuclear clusters (fractal isomers of nuclei). It is shown that the fractal nuclear isomers possess a wide spectrum of binding energies that exceed, in many cases, the values known at the present time. The transition of the nuclear matter in the form of ordinary nuclei (drops of the nuclear fluid) in the state with the fractal structure or in the form of bubble nuclei opens new sources of energy and has huge perspectives. This transition is based on a new state of matter - collective coherently correlated state. It manifests itself, first of all, in the property of nonlocality of nuclear multiparticle processes. We develop a phenomenological theory of the binding energy of nuclear fractal structures and modify the Bethe - Weizsäcker formula for nuclear clusters with the mass number A, charge Z, and fractal dimension D_f. The consideration of fractal nuclear isomers allows one to interpret the experimental results on a new level of the comprehension of processes of the nuclear dynamics. The possibility to determine the fractal dimension of nuclear systems with the help of the method of nuclear dipole resonance for fractal isomers is discussed. The basic relations for fractal electroneutral structures such as the electron-nucleus plasma of fractal isomers are presented.
description: Second part
Myrmoxenus kraussei Vu Myrmicinae
Creators: name: Lapeva-Gjonova, Albena
name: Csősz, Sándor
name: Mifsud, David
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Myrmoxenus
Myrmoxenus kraussei

description: Myrmoxenus kraussei (Emery, 1915)
Materials
Type status: Other material. Occurrence: catalogNumber: BFUS-I-AG 001995; recordedBy: M. Langourov; individualCount: 1; sex: queen; preparations: pinned; occurrenceID: D271AAA3-2B74-5B38-BC98-9D5F798A89A3; Taxon: scientificName: Myrmoxenus kraussei (Emery, 1915); order: Hymenoptera; family: Formicidae; taxonRank: species; Location: country: Bulgaria; county: Blagoevgrad; municipality: Strumyani; locality: Struma Valley, near Kamenitsa vill.; minimumElevationInMeters: 170; maximumElevationInMeters: 240; decimalLatitude: 41.650; decimalLongitude: 23.167; Event: samplingProtocol: soil traps; startDayOfYear: 07-09 - 2002; endDayOfYear: 27-09 - 2002; habitat: xerothermophilic site with Quercus coccifera L.; Record Level: collectionID: BFUS; basisOfRecord: PreservedSpecimen
Type status: Other material. Occurrence: catalogNumber: BFUS-I-AG 001995; recordedBy: M. Langourov; individualCount: 1; sex: worker; preparations: pinned; occurrenceID: 39583CA7-6A53-55DC-8F37-7F1094C33064; Taxon: scientificName: Myrmoxenus kraussei (Emery, 1915); order: Hymenoptera; family: Formicidae; taxonRank: species; Location: country: Bulgaria; county: Blagoevgrad; municipality: Strumyani; locality: Struma Valley, near Kamenitsa vill.; minimumElevationInMeters: 170; maximumElevationInMeters: 240; decimalLatitude: 41.650; decimalLongitude: 23.167; Event: samplingProtocol: soil traps; startDayOfYear: 07-09 - 2002; endDayOfYear: 27-09 - 2002; habitat: xerothermophilic site with Quercus coccifera L.; Record Level: collectionID: BFUS; basisOfRecord: PreservedSpecimen
Notes
Although the species was considered a degenerate slave-maker because of its very low worker number, Suefuji and Heinze (2015) suggest that it may be actively involved in slave raiding. Myrmoxenus kraussei has a Mediterranean distribution and prefers xerothermophilic habitats, where it most commonly uses Temnothorax recedens as a host (Buschinger 1989, Tinaut et al. 2005). Only two records of M. kraussei were recently reported from Bulgaria (Vrachanska Mt.) (Ljubomirov 2019). It is well distinguished by long, pointed setae (145-170 μm) on the body.
description: Published as part of Lapeva-Gjonova, Albena, Csősz, Sándor & Mifsud, David, 2024, Further records of social parasitic ants in Europe and review of the Bulgarian species, pp. e 123575 in Biodiversity Data Journal 12 on page e123575, DOI: 10.3897/BDJ.12.e123575
NuSTAR Spectroscopy of GRS 1915+105: Disk Reflection, Spin, and Connections to Jets
Creators: name: Miller, J. M.
name: Parker, M. L.
name: Fuerst, F.
name: Bachetti, M.
name: Harrison, F. A.
name: Barret, D.
name: Boggs, S. E.
name: Chakrabarty, D.
name: Christensen, F. E.
name: Craig, W. W.
name: Fabian, A. C.
name: Grefenstette, B. W.
name: Hailey, C. J.
name: King, A. L.
name: Stern, D. K.
name: Tomsick, J. A.
name: Walton, D. J.
name: Zhang, W. W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on the results of spectral fits made to a NuSTAR observation of the black hole GRS 1915+105 in a "plateau" state. This state is of special interest because it is similar to the "low/hard" state seen in other black holes, especially in that compact, steady jets are launched in this phase. The 3-79 keV bandpass of NuSTAR, and its ability to obtain moderate-resolution spectra free from distortions such as photon pile-up, are extremely well suited to studies of disk reflection in X-ray binaries. In only 15 ks of net exposure, an extraordinarily sensitive spectrum of GRS 1915+105 was measured across the full bandpass. Ionized reflection from a disk around a rapidly-spinning black hole is clearly required to fit the spectra; even hybrid Comptonization models including ionized reflection from a disk around a Schwarzschild black hole proved inadequate. A spin parameter of a = 0.98 +/- 0.01 (1-sigma statistical error) is measured via the best-fit model; low spins are ruled out at a high level of confidence. This result suggests that jets can be launched from a disk extending to the innermost stable circular orbit. A very steep inner disk emissivity profile is also measured, consistent with models of compact coronae above Kerr black holes. These results support an emerging association between the hard X-ray corona and the base of the relativistic jet.
description: Accepted for publication in ApJ Letters
MPEC 2023-V123 : 2023 VP3
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 VP3

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.
Does Agricultural Investment Still Promote Economic Growth in China? Empirical Evidence from ARDL Bounds Testing Model
Creators: name: Bakari, Sayef
name: Tiba, Sofien
name: Bakari, Sayef
name: Tiba, Sofien
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: International Development
subject: Political Economy
subject: Production Economics
subject: Agricultural planning
subject: family farms
subject: horticulture
subject: econometric models
subject: Costa Rica

description: One of the major unresolved research issues in agriculture is the question as to whether agricultural investments still a promoter of economic growth at the regional and local levels. The concern is not with the agricultural benefits, principally measured as food security, but whether there are additional development benefits from these investments. In this paper, we have developed a new approach to study the impact of agricultural investment on economic growth. By taking the case of China, this study is based on the Auto-Regressive Distributive Lags (ARDL) approach that is proposed by Pesaran et al (2002). The empirical estimate yields interesting results. In the short and long terms, agricultural investment has a positive effect on economic growth. The findings of this research have important implications for further policy designs that seek to maintain the agricultural sector in China in the future.
Lama glama
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Camelidae
Lama
Lama glama

description: Lama glama (Linnaeus, 1758). Syst. Nat., 10th ed., 1:65. TYPE LOCALITY: Peru, Andes (domesticated stock). DISTRIBUTION: Domesticated in S. Peru; W. Bolivia; N. W. Argentina. COMMENT: Should probably include guanicoe (PG). ISIS NUMBER: 5301419004002001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976
A geometrical meaning to the electron mass from breakdown of Lorentz invariance
Creators: name: Cardone, Fabio
name: Marrani, Alessio
name: Mignani, Roberto
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the problem of the electron mass in the framework of Deformed Special Relativity (DSR), a generalization of Special Relativity based on a deformed Minkowski space (i.e. a four-dimensional space-time with metric coefficients depending on the energy). We show that, by such a formalism, it is possible to derive the value of the electron mass from the space-time geometry via the experimental knowledge of the parameter of local Lorentz invariance breakdown, and of the Minkowskian threshold energy $E_{0,em}$ for the electromagnetic interaction. We put forward the suggestion that mass generation can be related, in DSR, to the possible dependence of mass on the metric background (relativity of mass).
description: 15 pages. To be published in the monography "What is electron?", Apeiron (2005)
Fractional diffusion limit for a stochastic kinetic equation
Creators: name: De Moor, Sylvain
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study the stochastic fractional diffusive limit of a kinetic equation involving a small parameter and perturbed by a smooth random term. Generalizing the method of perturbed test functions, under an appropriate scaling for the small parameter, and with the moment method used in the deterministic case, we show the convergence in law to a stochastic fluid limit involving a fractional Laplacian.
description: 38 pages
A Mixed Methods Study Investigating the Mediating Effects of Experiential Avoidance on the Relationship Between Alexithymia and Psychological Distress
Creators: name: O'Sullivan, Rebecca
Publisher: name: University of East London
Year: 2023
Subjects: alexithymia
experiential avoidance
psychological distress

description: Previous research has suggested that experiential avoidance mediates the relationship between alexithymia and psychological distress. However, commonly used measures of alexithymia and experiential avoidance have been questioned regarding their validity. Therefore, the aim of this study was to investigate the mediating role of experiential avoidance on the relationship between alexithymia and psychological distress using a sequential explanatory methodology. First, previous quantitative findings were replicated using improved psychometric questionnaires on a sample of 211 adults residing in the UK, analysed using the bootstrap statistical method set to 5,000 samples at a 95% confidence interval. Results showed that experiential avoidance fully mediated the relationship between alexithymia and psychological distress. However, this relationship was not found for two facets of alexithymia: Difficulty Identifying Feelings (DIF) and Externally Oriented Thinking (EOT). The subsequent qualitative investigation explored how men with an externally oriented thinking style experience emotions and psychological distress. This was analysed using template analysis, a thematic codebook approach. Overall, the combined results suggested that life experiences can lead to an avoidance of contact with unwanted private experiences, and that this avoidance accounts for the relationship between alexithymia and psychological distress. Additionally, the results suggested two potential mechanisms through which EOT did not relate to elements of psychological distress. First, that EOT may be functioning as a protective factor against both positive and negative emotional affect. Second, that traditional patriarchal pressures may have caused a rejection of emotional content and a preference for avoidant coping leading to a lack of distress disclosure and underscoring on mood questionnaires. Important theoretical and clinical implications were discussed through the lens of Counselling Psychology, leading to a critical evaluation of common assumptions that may underlie modern therapeutic techniques and contribute to social injustice.
Remarks on the vanishing viscosity process of state-constraint Hamilton-Jacobi equations
Creators: name: Han, Yuxi
name: Tu, Son N. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B40, 35D40, 49J20, 49L25, 70H20

description: We investigate the convergence rate in the vanishing viscosity process of the solutions to the subquadratic state-constraint Hamilton-Jacobi equations. We give two different proofs of the fact that, for nonnegative Lipschitz data that vanish on the boundary, the rate of convergence is $\mathcal{O}(\sqrt{\varepsilon})$ in the interior. Moreover, the one-sided rate can be improved to $\mathcal{O}(\varepsilon)$ for nonnegative compactly supported data and $\mathcal{O}(\varepsilon^{1/p})$ (where $1
Superdiffusion revisited in view of collisionless reconnection
Creators: name: Treumann, R. A.
name: Baumjohann, W.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The concept of diffusion in collisionless space plasmas like those near the magnetopause and in the geomagnetic tail is reexamined from a fundamental statistical point of view making use of the division of particle orbits into waiting orbits and break-out into ballistic motion lying at the bottom, for instance, of Lévy flights and the celebrated $κ$-distribution. A stringent derivation yields an anomalous diffusion coefficient increasing with time, thus describing superdiffusion. Contrary to wide belief, superdiffusion, though faster than classical, is a weak process. Absolute values of the coefficient are small due to the largeness of the anomalous collision frequency in waiting statistics compared with the infinitesimally small binary collision frequency. We provide parallel and perpendicular diffusion coefficients, determine the exponents of temporal increase, determine the power and $κ$ for two-dimensional diffusion by referring to published numerical particle-in-cell simulations, fix the range of permitted $κ$s, and construct a relation between the diffusion coefficients and the resistive scale. We furthermore find an expression for the anomalous collision frequency from the electron pseudo-viscosity in reconnection thus identifying reconnection as a localized diffusion process in satisfactory agreement with basic physical concepts.
description: 8 pages, 2 figures, submitted
Camponotus universitatis Forel 1890
Creators: name: Lapeva-Gjonova, Albena
name: Csősz, Sándor
name: Mifsud, David
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Camponotus
Camponotus universitatis

description: Camponotus universitatis Forel, 1890
Materials
Type status: Other material. Occurrence: catalogNumber: BFUS-I-AG 001023 (EtOH), BFUS-I-AG 001996 (pinned); occurrenceRemarks: found with Camponotus aethiops (Latreille, 1798) under a stone; recordedBy: A. Lapeva-Gjonova; individualCount: 6; sex: workers; preparations: 6 in EtOH, 1 pinned; occurrenceID: 79702482-B056-5A3A-A669-4C2DA01699BE; Taxon: scientificName: Camponotus universitatis Forel, 1890; order: Hymenoptera; family: Formicidae; taxonRank: species; Location: country: Albania; county: Gjirokastër; municipality: Përmet; locality: Frasher 3; minimumElevationInMeters: 1365; decimalLatitude: 40.35624; decimalLongitude: 20.41197; Event: samplingProtocol: hand collecting; eventDate: 18-06 - 2023; habitat: pine forest; Record Level: basisOfRecord: PreservedSpecimen
Notes
The species is an inquiline in the nests of Camponotus aethiops (Latreille, 1798) and C. pilicornis Roger, 1859, with few known localities in southern Europe (Spain, France, Italy, Switzerland, Albania, Bulgaria) and Anatolia (Karaman et al. 2015). It is clearly distinguished from other European species of Camponotus by its small size (about 5 mm in workers) and shiny body with standing claviform setae, which are also present on the dorsal side of the legs (Fig. 4 a). The new finding of C. universitatis comes from a nest of the typical ant host for the Balkans, C. aethiops, in a pine forest of the Hotova National Park (Gjirokastër County) (Fig. 4 b). After Andoni (1977), who first reported the species from two localities in Albania (Vlorë and Nivicë), this is a new record for this country after almost 50 years.
description: Published as part of Lapeva-Gjonova, Albena, Csősz, Sándor & Mifsud, David, 2024, Further records of social parasitic ants in Europe and review of the Bulgarian species, pp. e 123575 in Biodiversity Data Journal 12 on page e123575, DOI: 10.3897/BDJ.12.e123575
A new pseudo-Kaluza-Klein scheme for geometrical description of interactions
Creators: name: Cardone, Fabio
name: Marrani, Alessio
name: Mignani, Roberto
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We illustrate the main features of a new Kaluza-Klein-like scheme (Deformed Relativity in five dimensions). It is based on a five-dimensional Riemannian space in which the four-dimensional space-time metric is deformed (i.e. it depends on the energy) and energy plays the role of the fifth dimension. We review the solutions of the five-dimensional Einstein equations in vacuum and the geodetic equations in some cases of physical relevance. The Killing symmetries of the theory for the energy-dependent metrics corresponding to the four fundamental interactions (electromagnetic, weak, strong and gravitational) are discussed for the first time. Possible developments of the formalism are also briefly outlined.
description: 51 pages. To be published in a monography on higher-dimensional relativity theories, Nova Science (~ September 2005)
Local analysis of Grauert-Remmert-type normalization algorithms
Creators: name: Boehm, Janko
name: Decker, Wolfram
name: Schulze, Mathias
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 13B22 (Primary) 13H10, 14H20, 13P10 (Secondary)

description: Normalization is a fundamental ring-theoretic operation; geometrically it resolves singularities in codimension one. Existing algorithmic methods for computing the normalization rely on a common recipe: successively enlarge the given ring in form an endomorphism ring of a certain (fractional) ideal until the process becomes stationary. While Vasconcelos' method uses the dual Jacobian ideal, Grauert-Remmert-type algorithms rely on so-called test ideals. For algebraic varieties, one can apply such normalization algorithms globally, locally, or formal analytically at all points of the variety. In this paper, we relate the number of iterations for global Grauert-Remmert-type normalization algorithms to that of its local descendants. We complement our results by an explicit study of ADE singularities. This includes the description of the normalization process in terms of value semigroups of curves. It turns out that the intermediate steps produce only ADE singularities and simple space curve singularities from the list of Fruehbis-Krueger.
description: 22 pages, 7 figures
Effective de la Valle Poussin style bounds on the first Chebyshev function
Creators: name: Visser, Matt
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In 1898 Charles Jean de la Valle Poussin, as part of his famed proof of the prime number theorem, developed an ineffective bound on the first Chebyshev function of the form: \[ |θ(x)-x| = \mathcal{O}\left(x \exp(-K \sqrt{\ln x})\right). \] This bound holds for $x$ sufficiently large, $x\geq x_0$, and $K$ some unspecified positive constant. To the best of my knowledge this bound has never been made effective -- I have never yet seen this bound made fully explicit, with precise values being given for $x_0$ and $K$. Herein, using a number of effective results established over the past 50 years, I shall develop two very simple explicit fully effective bounds of this type: \[ |θ(x)-x| < \; {x} \;\exp\left( - {1\over4} \sqrt{\ln x}\right); \qquad (x\geq 2). \] \[ |θ(x)-x| < \; {x} \;\exp\left( - {1\over3} \sqrt{\ln x}\right); \qquad (x\geq 3). \] Many other fully explicit bounds along these lines can easily be developed. For instance one can trade off stringency against range of validity: \[ |θ(x)-x| < \; {1\over 2} \; {x} \;\exp\left( - {1\over4} \sqrt{\ln x}\right); \qquad (x\geq 29), \] \[ |θ(x)-x| < \; {1\over 2} \; {x} \;\exp\left( - {1\over3} \sqrt{\ln x}\right); \qquad (x\geq 41). \] With hindsight, some of these effective bounds could have been established almost 50 years ago.
description: 7 pages, no figures
Properties of nucleon in nuclear matter: once more
Creators: name: Azizi, K.
name: Er, N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the mass and residue of the nucleon in nuclear matter in the framework of QCD sum rules using the nucleon's interpolating current with an arbitrary mixing parameter. We evaluate the effects of the nuclear medium on these quantities and compare the obtained results with the existing theoretical predictions. The results are also compared with those obtained in vacuum to find the shifts in the quantities under consideration. Our calculations show that these shifts in the mass and residue are about $32\%$ and $15\%$, respectively.
description: 18 Pages, 2 Tables and 7 Figures, To be appear in EPJC
Lama guanicoe
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Camelidae
Lama
Lama guanicoe

description: Lama guanicoe (Muller, 1776). Linne's Vollstand. Natursyst. Suppl., p. 50. TYPE LOCALITY: Chile, Andes. DISTRIBUTION: Cordilleras of the Andes, in S. Peru, Bolivia, Argentina, and Chile; Patagonia, Tierra del Fuego; Navarino Isl. PROTECTED STATUS: CITES - Appendix II.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976
Conveyor-mode single-electron shuttling in Si/SiGe for a scalable quantum computing architecture
Creators: name: Seidler, Inga
name: Struck, Tom
name: Xue, Ran
name: Focke, Niels
name: Trellenkamp, Stefan
name: Bluhm, Hendrik
name: Schreiber, Lars R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Small spin-qubit registers defined by single electrons confined in Si/SiGe quantum dots operate successfully and connecting these would permit scalable quantum computation. Shuttling the qubit carrying electrons between registers is a natural choice for high-fidelity coherent links provided the overhead of control signals stays moderate. Our proof-of-principle demonstrates shuttling of a single electron by a propagating wave-potential in an electrostatically defined 420 nm long Si/SiGe quantum-channel. This conveyor-mode shuttling approach requires independent from its length only four sinusoidal control signals. We discuss the tuning of the signal parameters, detect the smoothness of the electron motion enabling the mapping of potential disorder and observe a high single-electron shuttling fidelity of $99.42\pm0.02\,\%$ including a reversal of direction. Our shuttling device can be readily embedded in industrial fabrication of Si/SiGe qubit chips and paves the way to solving the signal-fanout problem for a fully scalable semiconductor quantum-computing architecture.
description: 9 pages, 5 figures
Spectrum of Coupled Waves in Orthorhombic Multiferroics With Cycloidal Antiferromagnetic Structure in External Electric and Magnetic Fields
Creators: name: Bychkov, Igor V.
name: Kuzmin, Dmitry A.
name: Shavrov, Vladimir G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Spectrum of coupled spin, acoustic, electro-dipole and electromagnetic waves in orthorhombic perovskite multiferroics placed in external electric and magnetic field has been calculated. Frequency and field dependencies of electric, magnetic, and magnetoelectric susceptibilities of multiferroics with cycloidal antiferromagnetic structure in external electric and magnetic fields have been investigated as well. The spectrum of coupled waves has a band structure. Width and frequency ranges of bands depend on external fields. The possibility of control of electrodynamic properties of orthorhombic perovskite multiferroics with cycloidal antiferromagnetic structure by external electric and magnetic fields has been shown.
description: 4 pages, 2 figures, at print in IEEE Transactions on Magnetics
Analysis and Design of Shells using visual Programming
Creators: name: Dimaki, Konstantina
Publisher: name: Zenodo
Year: 2023

description: The construction industry, through the development of the building information modeling technology and, in combination with thin surfaces, aims to create elegant structures and minimize their cost. The development of structural design processes for complex geometries in a unified environment, characterized by ease of use and debugging of results, is one of the most important goals. Thus, not only will there be immediate information for all those involved in the implementation of projects, but also their applicants will be able to cause changes on the spot, so that ultimately, the pre-construction design will be accurate and safe. The basis of this thesis is the structural information contained in the simulations of the surface structures analyzed. These are analyzed through code development based on shell theories and simulated using the finite element method. This leads to error-free analyses that extract accurate results that serve as a requirement for the design of the structures. The key feature of the presented work is the establishment of cooperation protocols and a niche pipeline that integrates the three environments, i.e., architectural design, analysis and structural design. To achieve the aforementioned objectives, two workflows are investigated. The first is to design the structure entirely within a visual programming environment and from there to export it to a design environment for further processing. The second begins from the design of the structure in the design environment and next exporting this it into the visual programming environment to perform the analysis, structural design and time scheduling.
Lama pacos
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Camelidae
Lama
Lama pacos

description: Lama pacos (Linnaeus, 1758). Syst. Nat., 10th ed., 1:65. TYPE LOCALITY: Peru (domesticated stock). DISTRIBUTION: Domesticated in S. Peru; W. Bolivia. COMMENT: Often regarded as a synonym for glama; see Corbet and Hill, 1980:118.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976
description: {"references": ["Corbet, G. B., and J. E. Hill. 1980. A world list of mammalian species. British Museum (Natural History), London, 226 pp."]}
Regularity comparison of symbolic powers, integral closure of powers and powers of edge ideals
Creators: name: Kumar, Arvind
name: Kumar, Rajiv
Publisher: name: arXiv
Year: 2021
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 13D02, 13B22, 13F55, 05E40

description: We study the regularity of small symbolic powers and integral closure of small powers of edge ideals. We also prove that the regularity of integral closure of powers of edge ideals of graphs with at most two odd cycles is the same as the regularity of their powers.
description: 16 pages; Title has been changed, and results on the comparison of the regularity of small powers have been added. Comments and suggestions are welcome
IQTISODIY PROGNOZLASHDA SUN'IY INTELLEKT VA KATTA MA'LUMOTLARDAN FOYDALANISH
Creators: name: Majidov E. A Toshkent Davlat iqtisodiyot universiteti tayanch doktoranti Bekmurodov U. B Texnika fanlari nomzodi, Dotsent
Publisher: name: Zenodo
Year: 2025

description: Ushbu tadqiqotda sun’iy intellekt va katta ma’lumotlar iqtisodiy prognozlash jarayonidagi ahamiyati o‘rganilgan. Xususan, neyron tarmoqlar va LSTM algoritmlari yordamida AQSh dollarining O‘zbekiston so‘miga nisbatan kursi prognoz qilingan. Ilmiy asoslangan yondashuvlar, ilg‘or texnologiyalar va bashoratning texnik jarayonlari tahlil qilingan. Tadqiqot natijalari iqtisodiy barqarorlikni ta’minlashda va kelgusi prognozlarni ishlab chiqishda foydalanish uchun muhim ahamiyatga ega.

Kalit so‘zlarIqtisodiy prognozlash, sun’iy intellekt, katta ma’lumotlar, neyron tarmoqlar, LSTM algoritmi, valyuta kursi, bashorat texnologiyalari, AI platformalari, O‘zbekiston iqtisodiyoti, texnologik tahlil.
On $\mathsf{CD}$ spaces with nonnegative curvature outside a compact set
Creators: name: Che, Mauricio
name: Núñez-Zimbrón, Jesús
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 53C23, 53C21

description: In this paper we adapt work of Z.-D. Liu to prove a ball covering property for non-branching $\mathsf{CD}$ spaces with nonnegative curvature outside a compact set. As a consequence we obtain uniform bounds on the number of ends of such spaces.
description: 8 pages
Uniqueness of self-similar solutions to Smoluchowski's coagulation equations for kernels that are close to constant
Creators: name: Niethammer, B.
name: Velázquez, J. J. L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider self-similar solutions to Smoluchowski's coagulation equation for kernels $K=K(x,y)$ that are homogeneous of degree zero and close to constant in the sense that \[ -\eps \leq K(x,y)-2 \leq \eps \Big(\Big(\frac{x}{y}\Big)^α + \Big(\frac{y}{x}\Big)^α\Big) \] for $α\in [0,1)$. We prove that self-similar solutions with given mass are unique if $\eps$ is sufficiently small which is the first such uniqueness result for kernels that are not solvable. Our proof relies on a contraction argument in a norm that measures the distance of solutions with respect to the weak topology of measures.
Vicugna Lesson 1842
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Camelidae
Vicugna

description: Vicugna Lesson, 1842. Nouv. Tabl. Regn. Anim. Mammal., p. 167.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976
Quantum Metric and Correlated States in Two-dimensional Systems
Creators: name: Rossi, Enrico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The recent realization of twisted, two-dimensional, bilayers exhibiting strongly correlated states has created a platform in which the relation between the properties of the electronic bands and the nature of the correlated states can be studied in unprecedented ways. The reason is that these systems allow extraordinary control of the electronic bands' properties, for example by varying the relative twist angle between the layers forming the system. In particular, in twisted bilayers the low energy bands can be tuned to be very flat and with a nontrivial quantum metric. This allows the quantitative and experimental exploration of the relation between the metric of Bloch quantum states and the properties of correlated states. In this work we first review the general connection between quantum metric and the properties of correlated states that break a continuous symmetry. We then discuss the specific case when the correlated state is a superfluid and show how the quantum metric is related to the superfluid stiffness. To exemplify such relation we show results for the case of superconductivity in magic angle twisted bilayer graphene. We conclude by discussing possible research directions to further elucidate the connection between quantum metric and correlated states' properties.
description: Review article, submitted to Current Opinion in Solid State & Materials Science
Circuit Complexity in Topological Quantum Field Theory
Creators: name: Couch, Josiah
name: Fan, Yale
name: Shashi, Sanjit
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum circuit complexity has played a central role in recent advances in holography and many-body physics. Within quantum field theory, it has typically been studied in a Lorentzian (real-time) framework. In a departure from standard treatments, we aim to quantify the complexity of the Euclidean path integral. In this setting, there is no clear separation between space and time, and the notion of unitary evolution on a fixed Hilbert space no longer applies. As a proof of concept, we argue that the pants decomposition provides a natural notion of circuit complexity within the category of 2-dimensional bordisms and use it to formulate the circuit complexity of states and operators in 2-dimensional topological quantum field theory. We comment on analogies between our formalism and others in quantum mechanics, such as tensor networks and second quantization.
description: 47 pages, 8 figures; v3: comments, acknowledgements, and references added, matches published version
Vicugna vicugna
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Camelidae
Vicugna
Vicugna vicugna

description: Vicugna vicugna (Molina, 1782). Sagg. Stor. Nat. Chile, p. 313. TYPE LOCALITY: Peru, to S. Ecuador and C. Bolivia. (= Chilean Andes, from Coquimo to Copiapo.) DISTRIBUTION: S. Peru; W. Bolivia; N.W. Argentina; N. Chile. COMMENT: Should probably be included in Lama (PG). PROTECTED STATUS: CITES - Appendix I and U.S. ESA - Endangered. ISIS NUMBER: 5301419004002002001 as Lama vicugna.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976
A New Estimator for Phase Statistics
Creators: name: Munshi, D.
name: Takahashi, R.
name: McEwen, J. D.
name: Kitching, T. D.
name: Bouchet, F. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We introduce a novel statistic to probe the statistics of phases of Fourier modes in two-dimensions (2D) for weak lensing convergence field $κ$. This statistic contains completely independent information compared to that contained in observed power spectrum. We compare our results against state-of-the-art numerical simulations as a function of source redshift and find good agreement with theoretical predictions. We show that our estimator can achieve better signal-to-noise compared to the commonly employed statistics known as the line correlation function (LCF). Being a two-point statistics, our estimator is also easy to implement in the presence of complicated noise and mask, and can also be generalised to higher-order. While applying this estimator for the study of lensed CMB maps, we show that it is important to include post-Born corrections in the study of statistics of phase.
description: 18 pages, 7 figures
Tragulidae Milne-Edwards 1864
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Tragulidae

description: Family Tragulidae REVIEWED BY: B. R. Stein (BRS); S. Wang (SW)(China). ISIS NUMBER: 5301419005000000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976
Hyemoschus Gray 1845
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Tragulidae
Hyemoschus

description: Hyemoschus Gray, 1845. Ann. Mag. Nat. Hist., ser. 1, 16: 350. REVIEWED BY: R. G. Van Gelder (RGVG). ISIS NUMBER: 5301419005001000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976
The puzzle of the CNO abundances of α Cygni variables resolved by the Ledoux criterion?
Creators: name: Georgy, Cyril
name: Saio, Hideyuki
name: Meynet, Georges
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent stellar evolution computations show that the blue supergiant (BSG) stars could come from two distinct populations: a first group arising from massive stars that just left the main sequence (MS) and are crossing the Hertzsprung-Russell diagram (HRD) towards the red supergiant (RSG) branch, and a second group coming from stars that have lost considerable amount of mass during the RSG stage and are crossing the HRD for a second time towards the blue region. Due to very different luminosity-to- mass ratio, only stars from the second group are expected to have excited pulsations observable at the surface. In a previous work, we have shown that our models were able to reproduce the pulsational properties of BSGs. However, these models failed to reproduce the surface chemical composition of stars evolving back from a RSG phase. In this paper, we show how the use of the Ledoux criterion instead of the Schwarzschild one for convection allows to significantly improve the agreement with the observed chemical composition, while keeping the agreement with the pulsation periods. This gives some support to the Ledoux criterion.
description: 5 pages, 4 figures, accepted for publication in MNRAS letters
Nyquist-Sampling and Degrees of Freedom of Electromagnetic Fields
Creators: name: Pizzo, Andrea
name: Torres, Andrea de Jesus
name: Sanguinetti, Luca
name: Marzetta, Thomas L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Information Theory (cs.IT)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A signal space approach is presented to study the Nyquist sampling, number of degrees of freedom and reconstruction of an electromagnetic field under arbitrary scattering conditions. Conventional signal processing tools, such as the multidimensional sampling theorem and Fourier theory, are used to provide a linear system theoretic interpretation of electromagnetic wave propagation, thereby revealing the spatially bandlimited nature of electromagnetic fields. Their spatial bandwidth is dictated by the selectivity of the underlying scattering that allows establishing the Nyquist spatial sampling with a reduction of the number of fields samples needed to be processed.
description: IEEE Transactions on Signal Processing
Rapid detection and recognition of whole brain activity in a freely behaving Caenorhabditis elegans
Creators: name: Wu, Yuxiang
name: Wu, Shang
name: Wang, Xin
name: Lang, Chengtian
name: Zhang, Quanshi
name: Wen, Quan
name: Xu, Tianqi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Advanced volumetric imaging methods and genetically encoded activity indicators have permitted a comprehensive characterization of whole brain activity at single neuron resolution in \textit{Caenorhabditis elegans}. The constant motion and deformation of the nematode nervous system, however, impose a great challenge for consistent identification of densely packed neurons in a behaving animal. Here, we propose a cascade solution for long-term and rapid recognition of head ganglion neurons in a freely moving \textit{C. elegans}. First, potential neuronal regions from a stack of fluorescence images are detected by a deep learning algorithm. Second, 2-dimensional neuronal regions are fused into 3-dimensional neuron entities. Third, by exploiting the neuronal density distribution surrounding a neuron and relative positional information between neurons, a multi-class artificial neural network transforms engineered neuronal feature vectors into digital neuronal identities. With a small number of training samples, our bottom-up approach is able to process each volume - $1024 \times 1024 \times 18$ in voxels - in less than 1 second and achieves an accuracy of $91\%$ in neuronal detection and above $80\%$ in neuronal tracking over a long video recording. Our work represents a step towards rapid and fully automated algorithms for decoding whole brain activity underlying naturalistic behaviors.
Nuclear fission reaction simulations in compact stars
Creators: name: Deibel, Alex
name: Caplan, M. E.
name: Horowitz, C. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Type-Ia supernovae (SN Ia) are powerful stellar explosions that provide important distance indicators in cosmology. Recently, we proposed a new SN Ia mechanism that involves a nuclear fission chain-reaction in an isolated white dwarf [PRL 126, 1311010]. Here we perform novel reaction network simulations of the actinide-rich first solids in a cooling white dwarf. The network includes neutron-capture and fission reactions on a range of U and Th isotopes with various possible values for U-235 enrichment. We find, for modest U-235 enrichments, neutron-capture on U-238 and Th-232 can breed additional fissile nuclei so that a significant fraction of all U and Th nuclei may fission during the chain-reaction. The resulting large energy release could ignite thermonuclear carbon burning and possibly trigger a SN Ia.
description: 8 pages, 5 figures, revised introduction, accepted Phys. Rev. C
Classification of invariant valuations on the quaternionic plane
Creators: name: Bernig, Andreas
name: Solanes, Gil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Differential Geometry (math.DG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 53C65, 53C35

description: We describe the orbit space of the action of the group $\mathrm{Sp}(2)\mathrm{Sp}(1)$ on the real Grassmann manifolds $\mathrm{Gr}_k(\mathbb{H}^2)$ in terms of certain quaternionic matrices of Moore rank not larger than $2$. We then give a complete classification of valuations on the quaternionic plane $\mathbb{H}^2$ which are invariant under the action of the group $\mathrm{Sp}(2)\mathrm{Sp}(1)$.
description: 26 pages; minor changes
Materials Discovery using Max K-Armed Bandit
Creators: name: Kikkawa, Nobuaki
name: Ohno, Hiroshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Search algorithms for the bandit problems are applicable in materials discovery. However, the objectives of the conventional bandit problem are different from those of materials discovery. The conventional bandit problem aims to maximize the total rewards, whereas materials discovery aims to achieve breakthroughs in material properties. The max K-armed bandit (MKB) problem, which aims to acquire the single best reward, matches with the discovery tasks better than the conventional bandit. Thus, here, we propose a search algorithm for materials discovery based on the MKB problem using a pseudo-value of the upper confidence bound of expected improvement of the best reward. This approach is pseudo-guaranteed to be asymptotic oracles that do not depends on the time horizon. In addition, compared with other MKB algorithms, the proposed algorithm has only one hyperparameter, which is advantageous in materials discovery. We applied the proposed algorithm to synthetic problems and molecular-design demonstrations using a Monte Carlo tree search. According to the results, the proposed algorithm stably outperformed other bandit algorithms in the late stage of the search process when the optimal arm of the MKB could not be determined based on its expectation reward.
Hyemoschus aquaticus
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Artiodactyla
Tragulidae
Hyemoschus
Hyemoschus aquaticus

description: Hyemoschus aquaticus (Ogilby, 1841). Proc. Zool. Soc. Lond., 1840:35. TYPE LOCALITY: Sierra Leone, Bulham Creek. DISTRIBUTION: Sierra Leone to Gabon to Zaire and Uganda. PROTECTED STATUS: CITES - Appendix III (Ghana). ISIS NUMBER: 5301419005001001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Artiodactyla, pp. 315-343 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 318, DOI: 10.5281/zenodo.7352976