cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Bounding the row sum arithmetic mean by Perron roots of row-permuted matrices
Creators: name: Engel, Gernot Michael
name: Sergeev, Sergei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: $R_+^{n\times n}$ denotes the set of $n\times n$ non-negative matrices. For $A\in R_+^{n\times n}$ let $Ω(A)$ be the set of all matrices that can be formed by permuting the elements within each row of $A$. Formally: $$Ω(A)=\{B\in R_+^{n\times n}: \forall i\;\exists\text{ a permutation }ϕ_i\; \text{s.t.}\ b_{i,j}=a_{i,ϕ_i(j)}\;\forall j\}.$$ For $B\inΩ(A)$ let $ρ(B)$ denote the spectral radius or largest non negative eigenvalue of $B$. We show that the arithmetic mean of the row sums of $A$ is bounded by the maximum and minimum spectral radius of the matrices in $Ω(A)$ Formally, we are showing that $$\min_{B\inΩ(A)}ρ(B)\leq \frac{1}{n}\sum_{i=1}^n\sum_{j=1}^n a_{i,j}\leq \max_{B\inΩ(A)}ρ(B).$$ For positive $A$ we also obtain necessary and sufficient conditions for one of these inequalities (or, equivalently, both of them) to become an equality. We also give criteria which an irreducible matrix $C$ should satisfy to have $ρ(C)=\min_{B\inΩ(A)} ρ(B)$ or $ρ(C)=\max_{B\inΩ(A)} ρ(B)$. These criteria are used to derive algorithms for finding such $C$ when all the entries of $A$ are positive .
description: 12 pages
Spectral Energy Distribution Fitting: Application to Lyman Alpha-Emitting Galaxies
Creators: name: Gawiser, Eric
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Spectral Energy Distribution (SED) fitting is a well-developed astrophysical tool that has recently been applied to high-redshift Lyman Alpha-emitting galaxies. If rest-frame ultraviolet through near-infrared photometry is available, it allows the simultaneous determination of the star formation history and dust extinction of a galaxy. Lyman Alpha-emitter SED fitting results from the literature find star formation rates ~3 M_sun/yr, stellar masses ~10^9 M_sun for the general population but ~10^10 M_sun for the subset detected by IRAC, and very low dust extinction, A_V < 0.3, although a couple of outlying analyses prefer significantly more dust and higher intrinsic star formation rates. A checklist of 14 critical choices that must be made when performing SED fitting is discussed.
description: A review and discussion from the "Understanding Lyman-alpha Emitters" meeting in Heidelberg, Oct. 2008, 10 pages, to be published in New Astronomy Reviews. Full conference summary available as arXiv:0904.3335. Conference home-page, with presentations, is http://www.mpia.de/Public/Aktuelles/Tagungen/lae08/lae08.html
Visualization of Topological Boundary Modes Manifesting Topological Nodal-Point Superconductivity
Creators: name: Nayak, Abhay Kumar
name: Steinbok, Aviram
name: Roet, Yotam
name: Koo, Jahyun
name: Margalit, Gilad
name: Feldman, Irena
name: Almoalem, Avior
name: Kanigel, Amit
name: Fiete, Gregory A.
name: Yan, Binghai
name: Oreg, Yuval
name: Avraham, Nurit
name: Beidenkopf, Haim
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The extension of the topological classification of band insulators to topological semimetals gave way to the topology classes of Dirac, Weyl, and nodal line semimetals with their unique Fermi arc and drum head boundary modes. Similarly, there are several suggestions to employ the classification of topological superconductors for topological nodal superconductors with Majorana boundary modes. Here, we show that the surface 1H termination of the transition metal dichalcogenide compound 4Hb-TaS$_2$, in which 1T-TaS$_2$ and 1H-TaS$_2$ layers are interleaved, has the phenomenology of a topological nodal point superconductor. We find in scanning tunneling spectroscopy a residual density of states within the superconducting gap. An exponentially decaying bound mode is imaged within the superconducting gap along the boundaries of the exposed 1H layer characteristic of a gapless Majorana edge mode. The anisotropic nature of the localization length of the edge mode aims towards topological nodal superconductivity. A zero-bias conductance peak is further imaged within fairly isotropic vortex cores. All our observations are accommodated by a theoretical model of a two-dimensional nodal Weyl-like superconducting state, which ensues from inter-orbital Cooper pairing. The observation of an intrinsic topological nodal superconductivity in a layered material will pave the way for further studies of Majorana edge modes and its applications in quantum information processing.
description: initial submission
Barriers to implementing contingency management at a methadone treatment clinic: A qualitative study at a tertiary hospital in Tanzania
Creators: name: Mwamboneke, Betuna E
name: Kabwali, Damali L
name: Kalolo, Albino
name: Akiba, Christopher F
name: Ndelwa, Liness A
name: Lawala, Paul S
Publisher: name: Public Library of Science (PLoS)
Year: 2025

description:
INTRODUCTION: Contingency management in addiction behaviors has been widely applied in high income settings. Contingency management entails modification of behavior via the control or manipulation of consequences (contingencies) to the behavior. While a need exists for contingency management in low- and middle- income settings, specifically those of the sub-Saharan Africa region, uptake is low relative to high income settings. This study assessed barriers to implementation of contingency management for methadone treatment clients at the outpatient clinic of a tertiary hospital in Tanzania. METHODS: This study employed a qualitative design and was conducted at Mbeya Zonal Referral Hospital (MZRH). Guided by the consolidated framework of implementation research (CFIR), data were collected from two sources 1) ten purposively selected key informants (health care workers, methadone treatment clients and hospital leaders) who participated in in-depth interviews, and 2) a mini focus group discussion with five participants (two health care providers, two hospital leaders and one leader of methadone treatment clients). We developed semi-structured guides for in-depth interviews and the mini focus group to explore the key barriers. We analyzed the collected data using thematic analysis. RESULTS: Reported barriers revolved around the following key themes: lack of awareness and knowledge regarding contingency management, financial constraints to support implementation, trust between clients and health care workers, Health care workers work load, client behaviors and clinic culture. Participants mentioned lack of awareness and knowledge more frequently compared to other themes. CONCLUSION: In the context of specialized outpatient care in Tanzania, contingency management faces a variety of barriers. Deliberate efforts to establish and sustain contingency management in these settings require strategies that attend to the identified barriers. If the barriers are overcome, contingency management implementation and sustainment may follow and ultimately improve methadone related health outcome for patients.
Genome-wide identification, phylogeny and expression analyses of group III WRKY genes in cotton (Gossypium hirsutum)
Creators: name: Dong, Lijun
name: Wang, Meng
name: Zhang, Xue
name: Liu, Jianfeng
name: Zhang, Shuling
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Evolutionary Biology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Plant Biology
subject: Computational Biology

description: Cotton (Gossypium hirsutum) is an important economic crop, so it is of great significance to analyze its molecular mechanisms of resistance to Verticillium Wilt. The WRKY gene family encodes transcription factors (TFs) involved in plant resistance to biotic and abiotic stress. Here, we identified 17 group III WRKY genes in cotton based on the cotton genome project. The phylogenetic relationship and evolutionary of WRKY Group III TFs in Arabidopsis thaliana and G. hirsutum showed that all the WRKY Group III TFs were divided into two clades. Overall, Group III WRKYs with similar motif patterns showed a tendency to cluster into the same group in the phylogenetic tree. Elements related to jasmonic acid (JA) and salicylic acid (SA) regulation were identified in the promoter region of most WRKY Group III genes. The expression levels of five Group III genes were up-regulated more than two-fold and three genes were down-regulated after Verticillium dahliae Kleb. infection. Moreover, three group III GhWRKY genes with JA or SA regulatory element in the promoter region could be significantly induced by JA or SA, respectively. Subcellular localization and transcriptional activation analysis in yeast showed that Cot_14615 protein localized to the nucleus of mesophyll cells in Nicotiana tabacum and had transcription activation function. Our data on cotton group III WRKY genes can serve as a basis for further studies into their potential function in cotton resistant to Verticillium Wilt.
The Construction of Phenomenal Time
Creators: name: Hammer, Brendon
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Cognitive Neuroscience
subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Physical Sciences and Mathematics
subject: Life Sciences
subject: Arts and Humanities
subject: Philosophy of Mind
subject: Physics
subject: Neuroscience and Neurobiology
subject: Metaphysics
subject: Other Neuroscience and Neurobiology
subject: Other Physics
subject: A-series
subject: Block universe
subject: B-series
subject: Consciousness
subject: Flow
subject: Free will
subject: McTaggart
subject: Passage
subject: Phenomenal time
subject: Recursion
subject: Self-model
subject: Sensory-motor coordination
subject: Subjectivity
subject: Temporal experience
subject: Time

description: Manuscript
The Effects of Dual Language Education on Young Bilingual Children’s Learning: A Systematic Review of Research
Creators: name: Chaparro-Moreno, Leydi Johana
name: Castro, Dina C.
name: Franco-Jenkins, Ximena
Publisher: name: MDPI
Year: 2025

description:
In the last decade, a growing number of schools have begun implementing dual language education (DLE), and studies have shown evidence of the benefits of DLE for elementary education students. However, existing research syntheses do not focus on DLE in the early years (pre-Kindergarten and Kindergarten), considering young bilingual children’s development and learning characteristics. In this paper, a novel conceptual framework is used to explore the extant literature on DLE in the early years moving beyond Bronfenbrenner’s ecological systems theory to consider additional characteristics relating to bilingual children’s development and learning. A systematic literature review was conducted following a rigorous procedure, resulting in nine studies that met the inclusion criteria. Information about each study was coded and analyzed. The results describe the studies’ sample characteristics, research design, and findings organized by students’ academic skills (i.e., language, literacy, and mathematics), dual language classroom practices, and parents’ perceptions of DLE. This paper highlights current knowledge of DLE programs in the early years, identifies gaps, and offers recommendations for future research, policy, and practice.
Passively-Safe and Robust Multi-Agent Optimal Control with Application to Distributed Space Systems
Creators: name: Guffanti, Tommaso
name: D'Amico, Simone
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper presents a novel methodology to enforce motion safety guarantees even in the event of a sudden loss of control capabilities by any agent within a multi-agent system. This passive safety methodology permits the replacement of point-evaluated constraints on the trajectory following a contingency with a single function of the integration constants of the equations of motion at contingency instants. The effects of uncertainties on the trajectory are compensated for through the method of variation of parameters. This permits a reduction in the number of required constraints by one polynomial degree in the number of discrete time samples, and allows computationally efficient enforcement of passive safety within a multi-agent optimal control problem, solvable using direct methods. The main application is distributed space systems employing miniaturized low size-weight-and-power and commercial-off-the-shelf technology, which reduce mission financial costs at the expense of reliability. Experimental results for the upcoming Virtual Super-resolution Optics with Reconfigurable Swarms (VISORS) mission, as well as complementary formation-flying test cases in eccentric orbits, demonstrate the advantages of the proposed methodology in achieving fault-tolerant safety guarantees, as well as computational efficiency.
description: Submitted to AIAA Journal of Guidance, Control and Dynamics
Meningeal Lymphatic and Glymphatic Structures in a Pelagic Delphinid (Delphinus delphis)
Creators: name: Tift, Michael S.
name: Caron, Kathleen M.
name: McLellan, William A.
name: Yopak, Kara E.
name: Schweikert, Lorian E.
name: Braun, Molly
name: Doshkov, Paul
name: Piscitelli-Doshkov, Marina A.
name: Rotstein, David S.
name: Harms, Craig A.
name: Thayer, Victoria G.
name: Keenan, Tiffany F.
name: Jackson, Olivia N.
name: Rommel, Sentiel A.
name: Costidis, Alexander M.
name: Pabst, D. Ann
name: Kernagis, Dawn N.
name: Nelson-Maney, Nathan P.
Publisher: name: MDPI
Year: 2025

description:
The glymphatic system, an analog of the peripheral lymphatic system in the brain, and the meningeal lymphatic system are critical to central nervous system health. The glymphatic system functions to distribute cerebrospinal fluid and important compounds throughout the brain and to remove metabolic waste. The flow of cerebrospinal fluid through this system is affected by changes in cerebral blood flow, intracranial pressure, and vascular tone. Cetaceans experience profound cardiorespiratory alterations while diving that can directly affect cerebrospinal fluid and blood flow and, thus, glymphatic function. Our goal was to investigate glymphatic and lymphatic system structures, including perivascular spaces, aquaporin-4 water channels, meningeal lymphatic, and dural venous sinus vessels in the common dolphin (Delphinus delphis), using immunofluorescent labeling, histochemical staining, and postmortem computed tomography (CT) angiography. We highlight perivascular spaces and aquaporin-4 water channels surrounding blood vessels in the parenchyma and demonstrate evidence of meningeal lymphatic vessels and associated dural venous sinuses. These results demonstrate that common dolphins possess the key anatomical structures required for functional glymphatic and meningeal lymphatic systems. Future studies can build upon these anatomical discoveries to study the function and role of these systems in brain health in this species.
Derivatives of spin dynamics simulations
Creators: name: Kuprov, Ilya
name: Rodgers, Christopher T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We report analytical equations for the derivatives of spin dynamics simulations with respect to pulse sequence and spin system parameters. The methods described are significantly faster, more accurate and more reliable than the finite difference approximations typically employed. The resulting derivatives may be used in fitting, optimization, performance evaluation and stability analysis of spin dynamics simulations and experiments. Keywords: NMR, EPR, simulation, analytical derivatives, optimal control, spin chemistry, radical pair.
description: Accepted by The Journal of Chemical Physics
Definitions
Creators: name: Hammer, Brendon
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Cognitive Neuroscience
subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Life Sciences
subject: Arts and Humanities
subject: Philosophy of Mind
subject: Neuroscience and Neurobiology
subject: Cognition and Perception
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Manuscript
Observation of nonreciprocal magnon Hanle effect
Creators: name: Gückelhorn, Janine
name: de-la-Peña, Sebastián
name: Grammer, Matthias
name: Scheufele, Monika
name: Opel, Matthias
name: Geprägs, Stephan
name: Cuevas, Juan Carlos
name: Gross, Rudolf
name: Huebl, Hans
name: Kamra, Akashdeep
name: Althammer, Matthias
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The precession of magnon pseudospin about the equilibrium pseudofield, the latter capturing the nature of magnonic eigen-excitations in an antiferromagnet, gives rise to the magnon Hanle effect. Its realization via electrically injected and detected spin transport in an antiferromagnetic insulator demonstrates its high potential for devices and as a convenient probe for magnon eigenmodes and the underlying spin interactions in the antiferromagnet. Here, we observe a nonreciprocity in the Hanle signal measured in hematite using two spatially separated platinum electrodes as spin injector/detector. Interchanging their roles was found to alter the detected magnon spin signal. The recorded difference depends on the applied magnetic field and reverses sign when the signal passes its nominal maximum at the so-called compensation field. We explain these observations in terms of a spin transport direction-dependent pseudofield. The latter leads to a nonreciprocity, which is found to be controllable via the applied magnetic field. The observed nonreciprocal response in the readily available hematite films opens interesting opportunities for realizing exotic physics predicted so far only for antiferromagnets with special crystal structures.
“Una domanda ai compositori”
Creators: name: Ceccarelli, Luigi
Publisher: name: Musica/Tecnologia
Year: 2010

description: Luigi Ceccarelli takes into account the prerogatives of the current technologies referring to the elements pointed out by the critical commentary of the authors quoted inside the proposed “A question to the composers”. Noting that the remarks are more aimed at certain kinds of use, made to cover a lack of ideas, rather than at technology itself, the author points out how, to make music, a level of complexity of higher “logical standard” should be really reached.
description: Musica/Tecnologia, IV (2010)
mir-276a Is Required for Muscle Development in Drosophila and Regulates the FGF Receptor Heartless During the Migration of Nascent Myotubes in the Testis
Creators: name: Preußner, Mathieu
name: Bischoff, Maik
name: Önel, Susanne Filiz
Publisher: name: MDPI
Year: 2025

description:
MicroRNAs function as post-transcriptional regulators in gene expression and control a broad range of biological processes in metazoans. The formation of multinucleated muscles is essential for locomotion, growth, and muscle repair. microRNAs have also emerged as important regulators for muscle development and function. In order to identify new microRNAs required for muscle formation, we have performed a large microRNA overexpression screen. We screened for defects during embryonic and adult muscle formation. Here, we describe the identification of mir-276a as a regulator for muscle migration during testis formation. The mir-276a overexpression phenotype in testis muscles resembles the loss-of-function phenotype of heartless. A GFP sensor assay reveals that the 3′UTR of heartless is a target of mir-276a. Furthermore, we found that mir-276a is essential for the proper development of indirect flight muscles and describe a method for determining the number of nuclei for each of the six longitudinal muscle fibers (DLMs), which are part of the indirect flight muscles.
The formation of very wide binaries during the star cluster dissolution phase
Creators: name: Kouwenhoven, M. B. N.
name: Goodwin, S. P.
name: Parker, Richard J.
name: Davies, M. B.
name: Malmberg, D.
name: Kroupa, P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Over the past few decades, numerous wide (>1000 au) binaries in the Galactic field and halo have been discovered. Their existence cannot be explained by the process of star formation or by dynamical interactions in the field, and their origin has long been a mystery. We explain the origin of these wide binaries by formation during the dissolution phase of young star clusters: an initially unbound pair of stars may form a binary when their distance in phase-space is small. Using N-body simulations, we find that the resulting wide binary fraction in the semi-major axis range 1000 au - 0.1 pc for individual clusters is 1-30%, depending on the initial conditions. The existence of numerous wide binaries in the field is consistent with observational evidence that most clusters start out with a large degree of substructure. The wide binary fraction decreases strongly with increasing cluster mass, and the semi-major axis of the newly formed binaries is determined by the initial cluster size. The resulting eccentricity distribution is thermal, and the mass ratio distribution is consistent with gravitationally-focused random pairing. As a large fraction of the stars form in primordial binaries, we predict that a large number of the observed 'wide binaries' are in fact triple or quadruple systems. By integrating over the initial cluster mass distribution, we predict a binary fraction of a few per cent in the semi-major axis range 1000 au - 0.1 pc in the Galactic field, which is smaller than the observed wide binary fraction. However, this discrepancy may be solved when we consider a broad range of cluster morphologies.
description: 14 pages, 12 figures, accepted by MNRAS
The equivalence of optimal perspective formulation and Shor's SDP for quadratic programs with indicator variables
Creators: name: Han, Shaoning
name: Gómez, Andrés
name: Atamtürk, Alper
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: In this paper, we compare the strength of the optimal perspective reformulation and Shor's SDP relaxation. We prove these two formulations are equivalent for quadratic optimization problems with indicator variables.
description: arXiv admin note: substantial text overlap with arXiv:2004.07448
Exploring the Spectrum of QCD using the Lattice
Creators: name: Bulava, John
name: Cohen, Saul
name: Dudek, Jozef
name: Edwards, Robert
name: Engelson, Eric
name: Foley, Justin
name: Joo, Balint
name: Juge, Jimmy
name: Lin, Huey-Wen
name: Mathur, Nilmani
name: Morningstar, Colin
name: Peardon, Mike
name: Richards, David
name: Ryan, Sinead
name: Thomas, Christopher
name: Thomas, Anthony
name: Wallace, Stephen
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The calculation of the spectrum of QCD is key to an understanding of the strong interactions, and vital if we are to capitalize on the experimental study of the spectrum. In this paper, we describe progress towards understanding the spectrum of resonances of both mesons and baryons from lattice QCD, focusing in particular on the resonances of the $I=1/2$ nucleon states, and of charmonium mesons composed of the heavy charmed quarks.
description: Invited Poster presented at 2009 DOE Scientific Discovery through Advanced Computing (SciDAC) conference, June 14-18, 2009, San Diego, CA. To appear in Journal of Physics Conference Series
Driving Currents for Flux Rope Coronal Mass Ejections
Creators: name: Subramanian, Prasad
name: Vourlidas, Angelos
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We present a method for measuring electrical currents enclosed by flux rope structures that are ejected within solar coronal mass ejections (CMEs). Such currents are responsible for providing the Lorentz self-force that propels CMEs. Our estimates for the driving current are based on measurements of the propelling force obtained using data from the LASCO coronagraphs aboard the SOHO satellite. We find that upper limits on the currents enclosed by CMEs are typically around $10^{10}$ Amperes. We estimate that the magnetic flux enclosed by the CMEs in the LASCO field of view is a few $\times 10^{21}$ Mx.
description: Accepted for publication in the Astrophysical Journal
Valoración de los bienes públicos en los destinos turísticos: el excedente del consumidor de turistas europeos a Portugal
Creators: name: Álvarez-Díaz, Marcos
name: González-Gómez, Manuel
name: Otero-Giráldez, María Soledad
Publisher: name: Revista Turismo & Desenvolvimento
Year: 2016

description: En este artículo analizamos los bienes públicos en un destino turístico. Su importancia en la concreción final de los bienes y servicios de que dispone un turista nos permite concluir que pueden ser decisivos para la competitividad. Sin embargo, las características de los bienes públicos implican una tendencia del mercado a generar un infrasuministro de los mismos frente a los de mercado. Los métodos de valoración monetaria asignan un valor monetario a las preferencias de los individuos aunque no existan mercados de intercambio para los mismos. En el artículo se discuten las posibles utilizaciones de los valores monetarios asignados a bienes públicos para atenuar la falta de bienes públicos que puede ser la causa de que destino turístico no sea competitivo y, sin olvidarse de la eficiencia económica. Por último, con el método de los costes de desplazamiento se estima el excedente del consumidor de visitantes europeos a Portugal, detectando un incremento debido al mayor valor de la seguridad tras la primavera árabe.
description: Revista Turismo & Desenvolvimento, n.º 25 (2016)
Note on Many-Quark Model with su(4) Algebraic Structure
Creators: name: Tsue, Y.
name: Providencia, C.
name: da Providencia, J.
name: Yamamura, M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In a many-quark model developed in our previous paper where two-body color pairing and particle-hole type interactions are active, the exact energy eigenstates are re-formed with physically clearer expressions than those derived in our previous paper. By using the re-formed energy eigenstates, two types of the eigenstates in which the pairing correlation and the quark triplet formation separately appear definitely, are unified and this model can be treated for both the strong color correlations and the quark triplet formations.
description: 15 pages, 1 figure, using PTPTeX.cls
GULLI O'SIMLIKLARNING KELIB CHIQISHI VA TUZULISHI
Creators: name: Xoldaraliyeva, Anora
Publisher: name: Zenodo
Year: 2025

description: В данном тезисе подробно рассматриваются происхождение, строение и биологическое значение цветковых растений. Цветковые растения являются самыми развитыми и широко распространёнными на нашей планете. Изучены их основные органы: корень, стебель, лист, цветок, плод и семя. Также проанализировано их экологическое и экономическое значение.
Quasi-exactly solvable hyperbolic potential and its anti-isospectral counterpart
Creators: name: Condori-Pozo, E.
name: Reyes, M. A.
name: Rosu, H. C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We solve the eigenvalue spectra for two quasi exactly solvable (QES) Schrödinger problems defined by the potentials $V(x;γ,η) = 4γ^{2}\cosh^{4}(x) + V_{1}(γ,η) \cosh^{2}(x) + η\left( η-1 \right)\tanh^{2}(x)$ and $ U(x;γ,η) = -4γ^{2}\cos^{4}(x) - V_{1}(γ,η)\cos^{2}(x) + η\left( η-1 \right)\tan^{2}(x)$, found by the anti-isospectral transformation of the former. We use three methods: a direct polynomial expansion, which shows the relation between the expansion order and the shape of the potential function; direct comparison to the confluent Heun equation (CHE), which has been shown to provide only part of the spectrum in different quantum mechanics problems, and the use of Lie algebras, which has been proven to reveal hidden algebraic structures of this kind of spectral problems.
description: 15 pages, 4 figures, 32 references, accepted at Ann. Phys
David Hume : self identity
Creators: name: Browning, Walter Frank
Publisher: name: University of British Columbia
Year: 2010

description: In the 'Appendix' to the Treatise of Human Nature (1.) David Hume asserts that he has been unable to explain the principles which can adequately account for the unity and the identity of the self. There exists in Book I of the Treatise, a principle, which can in fact account for the unity and identity of the self. Hume utilizes the principle in his explication of our belief in the continued and independent existence of a material world. He did not, however, utilize the principle in his explanation of the unity and identity of the self. In the Introduction I indicate what the principle asserts and precisely how Hume utilizes it. In chapter one I examine Hume's concept of identity with a view towards clarifying some puzzles which arise in his account. Also in this chapter I point out how his explanation of the manner in which identity is predicated of a multiplicity can be improved. Both the Introduction and chapter one prepare the way for a clear statement of the manner in which identity is predicated of the self in chapter two. I show furthermore, how an impression of the self is possible upon the principles of Book I. (1.) All references to the Treatise are to the L.A. Selby-Bigge edition, Oxford at the Clarendon Press, 1955.
Efficiency of Higher Order Finite Elements for the Analysis of Seismic Wave Propagation
Creators: name: Semblat, Jean-François
name: Brioist, J. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The analysis of wave propagation problems in linear damped media must take into account both propagation features and attenuation process. To perform accurate numerical investigations by the finite differences or finite element method, one must consider a specific problem known as the numerical dispersion of waves. Numerical dispersion may increase the numerical error during the propagation process as the wave velocity (phase and group) depends on the features of the numerical model. In this paper, the numerical modelling of wave propagation by the finite element method is thus analyzed and dis-cussed for linear constitutive laws. Numerical dispersion is analyzed herein through 1D computations investigating the accuracy of higher order 15-node finite elements towards numerical dispersion. Concerning the numerical analy-sis of wave attenuation, a rheological interpretation of the classical Rayleigh assumption has for instance been previously proposed in this journal.
Distant formation and differentiation of outer main belt asteroids and carbonaceous chondrite parent bodies
Creators: name: Kurokawa, H.
name: Shibuya, T.
name: Sekine, Y.
name: Ehlmann, B. L.
name: Usui, F.
name: Kikuchi, S.
name: Yoda, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Volatile compositions of asteroids provide information on the Solar System history and the origins of Earth's volatiles. Visible to near-infrared observations at wavelengths of $<2.5\ {\rm μm}$ have suggested a genetic link between outer main belt asteroids located at $2.5$-$4\ {\rm au}$ and carbonaceous chondrite meteorites (CCs) that show isotopic similarities to volatile elements on Earth. However, recent longer wavelength data for large outer main belt asteroids show $3.1\ {\rm μm}$ absorption features of ammoniated phyllosilicates that are absent in CCs and cannot easily form from materials stable at those present distances. Here, by combining data collected by the AKARI space telescope and hydrological, geochemical, and spectral models of water-rock reactions, we show that the surface materials of asteroids having $3.1\ {\rm μm}$ absorption features and CCs can originate from different regions of a single, water-rock-differentiated parent body. Ammoniated phyllosilicates form within the water-rich mantles of the differentiated bodies containing NH$_3$ and CO$_2$ under high water-rock ratios ($>4$) and low temperatures ($<70^\circ$C). CCs can originate from the rock-dominated cores, that are likely to be preferentially sampled as meteorites by disruption and transport processes. Our results suggest that multiple large main belt asteroids formed beyond the NH$_3$ and CO$_2$ snow lines (currently $>10$ au) and could be transported to their current locations. Earth's high hydrogen to carbon ratio may be explained by accretion of these water-rich progenitors.
description: 53 pages, 19 figures, 6 tables, accepted for publication in AGU Advances. The journal version will be published as open access at https://doi.org/10.1029/2021AV000568
The extended Frobenius problem for Fibonacci sequences incremented by a Fibonacci number
Creators: name: Robles-Pérez, Aureliano M.
name: Rosales, José Carlos
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11D07, 11B39 (Primary), 11A67, 05A17 (Secondary)

description: We study the extended Frobenius problem for sequences of the form $\{f_a+f_n\}_{n\in\mathbb{N}}$, where $\{f_n\}_{n\in\mathbb{N}}$ is the Fibonacci sequence and $f_a$ is a Fibonacci number. As a consequence, we show that the family of numerical semigroups associated to these sequences satisfies the Wilf's conjecture.
description: 11 pages; typos corrected
Exploring Well-Being Disparities: A Comparative Analysis of Urban and Rural Clinicians Using the NIOSH Worker Well-Being Questionnaire.
Creators: name: Bissram, Jennifer
name: Adapa, Karthik
name: Baernholdt, Marianne
name: Mazur, Lukasz M
name: Epstein, Beth
name: Lee, Nayeon
Publisher: name: SAGE Publications
Year: 2025

description:
BACKGROUND: Clinician well-being is crucial to the healthcare system, particularly during the COVID-19 pandemic, which intensified psychological distress among clinicians. This study examines well-being disparities between rural and urban clinicians using the NIOSH Worker Well-Being Questionnaire (WellBQ). METHODS: A cross-sectional survey was conducted with 222 clinicians from one urban and three rural hospitals in North Carolina between September and December 2022. The WellBQ assessed well-being across five domains. Data analysis identified concerning thresholds based on positive and negative responses, with discrepancies resolved through independent reviews and focus group validation. FINDINGS: In the work evaluation and experience domain, rural hospitals reported concerns with time paucity and work overload, while urban hospitals focused on work-related fatigue and job engagement. Rural hospitals noted issues with job benefits, health programs, and schedule flexibility, whereas urban hospitals emphasized the lack of supportive work culture and management trust. Both settings reported concerns in the physical environment and safety climate domain, including sexual harassment, physical violence, and bullying. Health status concerns in rural hospitals included overall stress and poor mental health, while urban hospitals highlighted chronic health conditions and risky drinking. CONCLUSION: This study identified significant well-being disparities between rural and urban clinicians, with urban hospitals showing higher concerning thresholds. Future research should refine these thresholds, explore workplace violence causes, and assess long-term impacts on clinician well-being.Applications to Practice:This study reveals significant well-being disparities between rural and urban clinicians, emphasizing the need for tailored occupational health interventions.
Development of relativistic shock waves in viscous gluon matter
Creators: name: Bouras, I.
name: Molnar, E.
name: Niemi, H.
name: Xu, Z.
name: El, A.
name: Fochler, O.
name: Greiner, C.
name: Rischke, D. H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: To investigate the formation and the propagation of relativistic shock waves in viscous gluon matter we solve the relativistic Riemann problem using a microscopic parton cascade. We demonstrate the transition from ideal to viscous shock waves by varying the shear viscosity to entropy density ratio $η/s$. We show that an $η/s$ ratio larger than 0.2 prevents the development of well-defined shock waves on time scales typical for ultrarelativistic heavy-ion collisions. These findings are confirmed by viscous hydrodynamic calculations.
description: 4 pages, 3 figures - To appear in the conference proceedings for Quark Matter 2009, March 30 - April 4, Knoxville, Tennessee
BPS Open Strings and A-D-E-singularities in F-theory on K3
Creators: name: Bergshoeff, Eric A.
name: Hartong, Jelle
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We improve on a recently constructed graphical representation of the supergravity 7-brane solution and apply this refined representation to re-study the open string description of the A-D-E-singularities in F-theory on K3. A noteworthy feature of the graphical representation is that it provides the complete global branch cut structure of the 7-brane solution which plays an important role in our analysis. We first identify those groups of branes which when made to coincide lead to the A-D-E-gauge groups. We next show that there is always a sufficient number of open BPS strings to account for all the generators of the gauge group. However, as we will show, there is in general no one-to-one relation between BPS strings and gauge group generators. For the D_{n+4}- and E-singularities, in order to relate BPS strings with gauge group generators, we make an SU(n+4), respectively SU(5) subgroup of the D_{n+4}- and E-gauge groups manifest. We find that only for the D-series (and for the standard A-series) this is sufficient to identify, in a one-to-one manner, which BPS strings correspond to which gauge group generators.
description: 37 pages, 15 figures
Onvansertib exhibits anti-proliferative and anti-invasive effects in endometrial cancer
Creators: name: John, Catherine
name: Chen, Shuning
name: Zhou, Chunxiao
name: Sinha, Nikita
name: Haag, Jennifer
name: Shen, Xiaochang
name: Bae-Jump, Victoria
name: Emanuele, Michael
name: Sun, Wenchuan
name: Zhang, Haomeng
Publisher: name: Frontiers
Year: 2025

description:
Polo-like kinase 1 (Plk1) is widely recognized as an oncogene that promotes cell proliferation by regulating cell division, DNA damage response, and genome stability and has been shown to be overexpressed in many cancers, including endometrial cancer. Targeting Plk1 by onvansertib has been shown to have anti-tumor activity in pre-clinical models of multiple cancers and is currently being evaluated in phase 1 and 2 clinical trials in cancer patients. In this study, we evaluated the potential anti-tumorigenic effects of onvansertib in endometrial cancer cells and the LKB1fl/fl p53fl/fl mouse model of endometrial cancer. Onvansertib inhibited cellular proliferation, caused G2 phase arrest, induced cellular stress and apoptosis, and inhibited cellular migration and invasion in endometrial cancer cells. Combined treatment with onvansertib and paclitaxel led to synergistic inhibition of cell proliferation. Onvansertib treatment for 4 weeks significantly reduced tumor growth in LKB1fl/flp53fl/fl mice. Given these promising pre-clinical results, further studies are needed to evaluate the clinical translatability of onvansertib combined with paclitaxel as an effective treatment for endometrial cancer.
Hadronic light-by-light scattering contribution to the muon g-2
Creators: name: Nyffeler, Andreas
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review recent developments concerning the hadronic light-by-light scattering contribution to the anomalous magnetic moment of the muon. We first discuss why fully off-shell hadronic form factors should be used for the evaluation of this contribution to the g-2. We then reevaluate the numerically dominant pion-exchange contribution in the framework of large-N_C QCD, using an off-shell pion-photon-photon form factor which fulfills all QCD short-distance constraints, in particular, a new short-distance constraint on the off-shell form factor at the external vertex in g-2, which relates the form factor to the quark condensate magnetic susceptibility in QCD. Combined with available evaluations of the other contributions to hadronic light-by-light scattering this leads to the new result a_μ(LbyL; had) = (116 \pm 40) x 10^{-11}, with a conservative error estimate in view of the many still unsolved problems. Some potential ways for further improvements are briefly discussed as well. For the electron we obtain the new estimate a_{e}(LbyL; had) = (3.9 \pm 1.3) x 10^{-14}.
description: 6 pages, 1 figure, to be published in the proceedings of the PhiPsi09 workshop, Oct. 13-16, 2009, Beijing, China
Editorial: Human Protein Kinases: Development of Small-Molecule Therapies
Creators: name: Axtman, Alison D.
Publisher: name: MDPI
Year: 2025

description:
Human protein kinases are ubiquitously expressed throughout the human body and embedded in signaling pathways that mediate diverse biology. When their function becomes aberrant due to mutation(s) and/or changes in expression, resultant kinase dysfunction can propagate disease. Fortunately, kinases represent highly tractable proteins that can be pharmacologically inhibited to impact disease progression. Capitalizing on this feature, industrial and academic labs have pushed more than 80 small molecule kinase inhibitors through FDA approval, resulting in the distinction of kinase inhibitors as one of the most important drug classes. While most of these kinase-targeting drugs have been approved for oncological indications, kinase function can be similarly modulated to impact other progressive diseases, such as those impacting the heart or brain. Another aspect of these approved drugs to consider is their binding mode. There are a few examples, such as trametinib, asciminib, and deucravacitinib, of FDA-approved kinase drugs that bind to an allosteric site outside of the ATP-binding pocket to elicit kinase inhibition. These allosteric sites can be proximal to (type III kinase inhibitor) or distal from (type IV kinase inhibitor) the ATP-binding pocket. A deeper look into the kinase targets of FDA-approved drugs reveals that they inhibit only a small fraction of the human kinome. In light of the historic success of drugging human kinases, one may consider whether inhibiting those kinases in the lesser studied portion of the human kinome could result in new drugs and/or expand the diseases that can be assuaged through kinase inhibition.
Deep Surrogate for Direct Time Fluid Dynamics
Creators: name: Meyer, Lucas
name: Pottier, Louen
name: Ribes, Alejandro
name: Raffin, Bruno
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: The ubiquity of fluids in the physical world explains the need to accurately simulate their dynamics for many scientific and engineering applications. Traditionally, well established but resource intensive CFD solvers provide such simulations. The recent years have seen a surge of deep learning surrogate models substituting these solvers to alleviate the simulation process. Some approaches to build data-driven surrogates mimic the solver iterative process. They infer the next state of the fluid given its previous one. Others directly infer the state from time input. Approaches also differ in their management of the spatial information. Graph Neural Networks (GNN) can address the specificity of the irregular meshes commonly used in CFD simulations. In this article, we present our ongoing work to design a novel direct time GNN architecture for irregular meshes. It consists of a succession of graphs of increasing size connected by spline convolutions. We test our architecture on the Von K{á}rm{á}n's vortex street benchmark. It achieves small generalization errors while mitigating error accumulation along the trajectory.
Scaffolding Ethics-Focused Methods for Practice Resonance
Creators: name: Gray, Colin M.
name: Chivukula, Shruthi Sai
name: Carlock, Thomas
name: Li, Ziqing
name: Duane, Ja-Nae
Publisher: name: arXiv
Year: 2022
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Numerous methods and tools have been proposed to motivate or support ethical awareness in design practice. However, many existing resources are not easily discoverable by practitioners. One reason being that they are framed using language that is not immediately accessible or resonant with the felt complexity of everyday practice. In this paper, we propose a set of empirically-supported "intentions" to frame practitioners' selection of relevant ethics-focused methods based on interviews with practitioners from a range of technology and design professions, and then leverage these intentions in the design and iterative evaluation of a website that allows practitioners to identify supports for ethics-focused action in their work context. Building on these findings, we propose a set of heuristics to evaluate the practice resonance of resources to support ethics-focused practice, laying the groundwork for increased ecological resonance of ethics-focused methods and method selection tools.