cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exploring Bounded Optimal Coordination for Heterogeneous Teams with Cross-Schedule Dependencies
Creators: name: G. Ayorkor  Korsah
Publisher: name: Figshare
Year: 2018
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences

description: Many domains, such as emergency assistance, agriculture, construction, and planetary exploration, will increasingly require effective coordination of teams of robots and humans to accomplish a collection of spatially distributed heterogeneous tasks. Such coordination problems range from those that require loosely coordinated teams in which agents independently perform their assigned tasks, to those that require tightly coordinated teams where all actions of the team members need to be tightly synchronized. The scenarios of interest to this thesis lie between these two extremes, where some tasks are independent and others are related by constraints such as precedence, simultaneity, or proximity. These constraints may be a result of different factors including the complementary capabilities of different types of agents which require them to cooperate to achieve certain goals. The manner in which the constraints are satisfied influences the overall utility of the team.
This thesis explores the problem of task allocation, scheduling, and routing for heterogeneous teams with such cross-schedule dependencies. We first describe and position this coordination problem in the larger space of multi-robot task allocation problems and propose an enhanced taxonomy for this space of problems. Recognizing that solution quality is important in many domains, we then present a mathematical programming approach to computing a bounded-optimal solution to the task allocation, scheduling and routing problem with cross-schedule dependencies. Specifically, we present a branch-and-price algorithm operating on a set-partitioning formulation of the problem, with side constraints. This bounded optimal “anytime” algorithm computes progressively better solutions and bounds, until it eventually terminates with the optimal solution. By examining the behavior of this algorithm, we gain insight into the impact on problem difficulty of various problem features, particularly different types of cross-schedule dependencies. Lastly, the thesis presents a flexible execution strategy for the resulting team plans with cross-schedule dependencies, and results demonstrating the approach on a team of indoor robots
New Information Technologies, Simulation and Automation
Creators: name: Velychko, Vitalii
name: Voinova, Svitlana
name: Granyak, Valery
name: Ivanova, Liliia
name: Kotlyk, Sergii
name: Kudriashova, Alona
name: Kunup, Tetiana
name: Malakhov, Kyrylo
name: Pikh, Iryna
name: Punchenko, Nataliia
name: Senkivskyy, Vsevolod
name: Sergeeva, Olexandra
name: Sokolova, Oksana
name: Fedosov, Sergiy
name: Khoshaba, Oleksandr
name: Tsyra, Olexandra
name: Chaplinskyy, Yuri
name: Gurskiy, Olexander
name: Zavertailo, Kostiantyn
name: Kotlyk, Diana
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The monograph summarizes and analyzes the current state of development of computer and mathematical simulation and modeling, the automation of management processes, the use of information technologies in education, the design of information systems and software complexes, the development of computer telecommunication networks and technologies most areas that are united by the term Industry 4.0
description: MONOGRAPH Scientific publication (issue). Editor-in-Chief Sergii Kotlyk. Published By Iowa State University Digital Press; ISBN 978-1-958291-01-6; 729 pages; The text of this monograph is in Ukrainian. Published July 15, 2022
Structure of resonances in the Gamow burning window for the Al 25 (p,γ) Si 26 reaction in novae
Creators: name: Chiara, C.J.
name: David, H.M.
name: Zhu, S.
name: Doherty, D.T.
name: Carpenter, M.P.
name: Lederer, C.
name: Janssens, R.V.F.
name: Seweryniak, D.
name: Ayangeakaa, A.D.
name: Kankainen, A.
name: Albers, M.
name: Woods, P.J.
name: Harker, J.L.
Publisher: name: American Physical Society
Year: 2015

description: A γ-ray spectroscopy study of excited states in Si26 has been performed by using the Mg24(3He,n) reaction at a beam energy of 10 MeV. In particular, states have been studied above the proton threshold relevant for burning in the Al25(p,γ)Si26 reaction in novae. This reaction influences the amount of Al26 injected into the interstellar medium by novae, which contributes to the overall flux of cosmic γ-ray emission from Al26 observed in satellite missions. The present results point strongly to the existence of a 0+ state at an excitation energy of 5890 keV lying within the Gamow burning window, which raises questions about the existence and properties of another, higher-lying state reported in previous experimental work. The existence of two such states within this excitation energy region cannot be understood within the framework of sd-shell-model calculations. © 2015 American Physical Society.
Thermal effect in a causal diamond: open quantum systems approach
Creators: name: Chakraborty, Abhijit
name: Camblong, Horacio
name: Ordonez, Carlos
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A static observer with a finite lifetime has causal access to only a limited region of spacetime known as the causal diamond. The presence of an apparent horizon in the causal diamond, due to the observer's finite lifetime, is the origin of an Unruh-like thermal effect. Thus, even though the observer is static and the background is flat, the finite-lifetime observer experiences a thermal bath in the Minkowski vacuum. In this article, we provide an open quantum systems approach that yields a complete thermal characterization via the observer's steady-state density matrix, which is shown to be thermal with a temperature inversely proportional to its lifetime. This associated diamond temperature agrees with the established result derived from other methods. Moreover, our approach is particularly useful for designing entanglement harvesting protocols in the causal diamond. In addition, we introduce an insightful procedure that defines diamond coordinates using conformal transformations, and which leads to a more direct derivation of the thermal properties.
description: 25 pages, 5 figures
Xe 136 + Pb 208 reaction: A test of models of multinucleon transfer reactions
Creators: name: Yanez, R.
name: McCutchan, E.A.
name: Ayangeakaa, A.D.
name: Janssens, R.V.F.
name: Zhu, S.
name: Harker, J.L.
name: Carpenter, M.P.
name: Loveland, W.
name: Chiara, C.J.
name: Lauritsen, T.
name: Barrett, J.S.
name: Walters, W.B.
name: Sonzogni, A.A.
name: Greene, J.P.
Publisher: name: American Physical Society
Year: 2015

description: The yields of over 200 projectile-like fragments (PLFs) and target-like fragments (TLFs) from the interaction of (Ec.m.=450 MeV) Xe136 with a thick target of Pb208 were measured using Gammasphere and off-line γ-ray spectroscopy, giving a comprehensive picture of the production cross sections in this reaction. The measured yields were compared to predictions of the grazing model and the predictions of Zagrebaev and Greiner using a quantitative metric, the theory evaluation factor tef. The grazing model predictions are adequate for describing the yields of nuclei near the target or projectile but they grossly underestimate the yields of all other products. The predictions of Zagrebaev and Greiner correctly describe the magnitude and maxima of the observed TLF transfer cross sections for a wide range of transfers (ΔZ=-8 to ΔZ=+2). However, for ΔZ=+4, the observed position of the maximum in the distribution is four neutrons richer than the predicted maximum. The predicted yields of the neutron-rich N=126 nuclei exceed the measured values by two orders of magnitude. Correlations between TLF and PLF yields are discussed.
Analytical study of ion-acoustic solitary waves in a magnetized plasma with degenerate electrons
Creators: name: Indra, Moumita
name: Ghosh, Kamal Kumar
name: Ray, Saibal
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The propagation of fully nonlinear ion acoustic solitary waves (IASW) in a magneto-plasma with degenerate electrons was investigated by Abdelsalam et al. [[1] Physics Letters A 372 (2008) 4923]. Based on their work in the present work, a rigorous and general analytical study is presented. This confirms their implied assumption that (i) only hump and no cavity is possible and (ii) for humps, the algebraic equation for the maximum density N obtained by them determines it uniquely (naturally assumes N > 1). Here we confirm analytically their assertion that N decreases with lx (the direction cosine of the wave vector k along the x-axis) and N increases with the increase of the Mach number (M).
Quantum integrability in the multistate Landau-Zener problem
Creators: name: Patra, Aniket
name: Yuzbashyan, Emil A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze Hamiltonians linear in the time variable for which the multistate Landau-Zener problem is known to have an exact solution. We show that they either belong to families of mutually commuting Hamiltonians polynomial in time or reduce to the 2 x 2 Landau-Zener problem, which is considered trivially integrable. The former category includes the equal slope, bow-tie, and generalized bow-tie models. For each of these models we explicitly construct the corresponding families of commuting matrices. The equal slope model is a member of an integrable family that consists of the maximum possible number (for a given matrix size) of commuting matrices linear in time. The bow-tie model belongs to a previously unknown, similarly maximal family of quadratic commuting matrices. We thus conjecture that quantum integrability understood as the existence of nontrivial parameter-dependent commuting partners is a necessary condition for the Landau-Zener solvability. Descendants of the 2 x 2 Landau-Zener Hamiltonian are e.g. general SU(2) and SU(1,1) Hamiltonians, time-dependent linear chain, linear, nonlinear, and double oscillators. We explicitly obtain solutions to all these Landau-Zener problems from the 2 x 2 case.
description: 17+ pages, no figures
Additional file 5 of Measurement properties of device-based physical activity instruments in ambulatory adults with physical disabilities and/or chronic diseases: a scoping review
Creators: name: Brandenbarg, Pim
name: Hoekstra, Femke
name: Barakou, Ioulia
name: Seves, Bregje L.
name: Hettinga, Florentina J.
name: Hoekstra, Trynke
name: van der Woude, Lucas H. V
name: Dekker, Rienk
name: Krops, Leonie A.
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Biotechnology
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Cancer

description: Additional file 5: Supplementary file 5. Expanded overview of research-grade devices evaluated on their measurement properties in 52 studies. An expanded overview of the research-grade devices evaluated on their measurement properties. Extra information on epoch length, sampling rate and results per condition.
White-light QFP Wave Train and the Associated Failed Breakout Eruption
Creators: name: Shen, Yuandeng
name: Yao, Surui
name: Tang, Zehao
name: Zhou, Xinping
name: Qu, Zhining
name: Duan, Yadan
name: Zhou, Chengrui
name: Tan, Song
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Quasi-periodic fast-propagating (QFP) magnetosonic wave trains are commonly observed in the low corona at extreme ultraviolet wavelength bands. Here, we report the first white-light imaging observation of a QFP wave train propagating outwardly in the outer corona ranging from 2 to 4 solar Radii. The wave train was recorded by the Large Angle Spectroscopic Coronagraph on board the Solar and Heliospheric Observatory, and it was associated with a GOES M1.5 flare in NOAA active region AR12172 at the southwest limb of the solar disk. Measurements show that the speed and period of the wave train were about 218 km/s and 26 minutes, respectively. The extreme ultraviolet imaging observations taken by the Atmospheric Imaging Assembly on board the Solar Dynamic Observatory reveals that in the low corona the QFP wave train was associated with the failed eruption of a breakout magnetic system consisting of three low-lying closed loop systems enclosed by a high-lying large-scale one. Data analysis results show that the failed eruption of the breakout magnetic system was mainly because of the magnetic reconnection occurred between the two sided low-lying closed-loop systems. This reconnection enhances the confinement capacity of the magnetic breakout system because the upward-moving reconnected loops continuously feed new magnetic fluxes to the high-lying large-scale loop system. For the generation of the QFP wave train, we propose that it could be excited by the intermittent energy pulses released by the quasi-periodic generation, rapid stretching and expansion of the upward-moving, strongly bent reconnected loops.
description: 6 pages, 5 figures, accepted by A&A
ExploringWeakly Labeled Data Across the Noise-Bias Spectrum
Creators: name: Fisher, Robert W. H.
Publisher: name: Figshare
Year: 2018
Subjects: subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: As the availability of unstructured data on the web continues to increase, it is becoming increasingly necessary to develop machine learning methods that rely less on human annotated training data. In this thesis, we present methods for learning from weakly labeled data. We present a unifying framework to understand weakly labeled data in terms of bias and noise and identify methods that are well suited to learning from certain types of weak labels. To compensate for the tremendous sizes of weakly labeled datasets, we leverage computationally efficient and statistically consistent spectral methods. Using these methods, we present results from four diverse, real-world applications coupled with a unifying simulation environment. This allows us to make general observations that would not be apparent when examining any one application on its own. These contributions allow us to significantly improve prediction when labeled data is available, and they also make learning tractable when the cost of acquiring annotated data is prohibitively high.
Persistence of collective behavior at high spin in the N=88 nucleus Tb 153
Creators: name: Lauritsen, T.
name: Ragnarsson, I.
name: Wang, X.
name: Nolan, P.J.
name: Zhu, S.
name: Hampson, P.
name: Garg, U.
name: Chiara, C.J
name: Radford, D.C.
name: Janssens, R.V.F.
name: Miller, S.
name: Ollier, J.
name: Riedinger, L.L.
name: Simpson, J.
name: Mason, P.J.R.
name: Kondev, F.G.
name: Hoffman, C.R.
name: Revill, J.P.
name: Riley, M.A.
name: Rees, J.M.
name: Paul, E.S.
name: Petri, M.
name: Carpenter, M.P.
name: Ayangeakaa, A.D.
name: Hartley, D.J.
name: Matta, J.T.
Publisher: name: American Physical Society
Year: 2015

description: Excited states in the N=88 nucleus Tb153 were observed up to spin ∼40 in an experiment utilizing the Gammasphere array. The Tb153 states were populated in a weak α4n evaporation channel of the Cl37 + Sn124 reaction. Two previously known sequences were extended to higher spins, and a new decoupled structure was identified. The πh11/2 band was observed in the spin region where other N=88 isotopes exhibit effects of prolate to oblate shape changes leading to band termination along the yrast line, whereas Tb153 displays a persistent collective behavior. However, minor perturbations of the very highest state in both signatures of this h11/2 band are observed, which perhaps signal the start of the transition towards band termination.
Wind energy potential of the German Bight
Creators: name: Kleidon, Axel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Popular Physics (physics.pop-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The wind blows stronger and more reliably over the sea than over land. Thus, offshore wind energy is expected to make a major contribution to the energy transition in Germany, especially in the German Bight. But what happens when a growing number of wind farms extract more and more wind energy from the atmosphere?
description: 10 pages, 6 figures
Computational studies of biomembrane systems: Theoretical considerations, simulation models, and applications
Creators: name: Deserno, Markus
name: Kremer, Kurt
name: Paulsen, Harald
name: Peter, Christine
name: Schmid, Friederike
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: This chapter summarizes several approaches combining theory, simulation and experiment that aim for a better understanding of phenomena in lipid bilayers and membrane protein systems, covering topics such as lipid rafts, membrane mediated interactions, attraction between transmembrane proteins, and aggregation in biomembranes leading to large superstructures such as the light harvesting complex of green plants. After a general overview of theoretical considerations and continuum theory of lipid membranes we introduce different options for simulations of biomembrane systems, addressing questions such as: What can be learned from generic models? When is it expedient to go beyond them? And what are the merits and challenges for systematic coarse graining and quasi-atomistic coarse grained models that ensure a certain chemical specificity?
Subtropical Real Root Finding
Creators: name: Sturm, Thomas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: We describe a new incomplete but terminating method for real root finding for large multivariate polynomials. We take an abstract view of the polynomial as the set of exponent vectors associated with sign information on the coefficients. Then we employ linear programming to heuristically find roots. There is a specialized variant for roots with exclusively positive coordinates, which is of considerable interest for applications in chemistry and systems biology. An implementation of our method combining the computer algebra system Reduce with the linear programming solver Gurobi has been successfully applied to input data originating from established mathematical models used in these areas. We have solved several hundred problems with up to more than 800000 monomials in up to 10 variables with degrees up to 12. Our method has failed due to its incompleteness in less than 8 percent of the cases.
Detecting clusters of galaxies and active galactic nuclei in an eROSITA all-sky survey digital twin
Creators: name: Seppi, R.
name: Comparat, J.
name: Bulbul, E.
name: Nandra, K.
name: Merloni, A.
name: Clerc, N.
name: Liu, T.
name: Ghirardini, V.
name: Liu, A.
name: Salvato, M.
name: Sanders, J. S.
name: Wilms, J.
name: Dwelly, T.
name: Dauser, T.
name: Konig, O.
name: Ramos-Ceja, M. E.
name: Garrel, C.
name: Reiprich, T. H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The extended ROentgen Survey with an Imaging Telescope Array (eROSITA) onboard the Spectrum-Roentgen-Gamma (SRG) observatory is revolutionizing X-ray astronomy. It provides large samples of active galactic nuclei (AGN) and clusters of galaxies, with the potential of studying X-ray sources and measuring cosmological parameters using X-ray-selected samples with higher precision than ever before. We aim to study the detection, and the selection of AGN and clusters in the first eROSITA all-sky survey (eRASS1), and to characterize the properties of the source catalog. We produced a half-sky eRASS1 simulation, by combining models that truthfully represent the clusters and AGN. In total, we simulated 1 116 758 clusters and 225 583 320 AGN. We ran the standard eROSITA detection algorithm. We matched the input and source catalogs with a photon-based algorithm. We perfectly recovered the bright sources. We detected half of the AGN brighter than 2e-14 erg/s/cm2 as point sources and half of the clusters brighter than 3e-13 erg/s/cm2 as extended in the 0.5-2.0 keV band. We quantified the detection performance in terms of completeness, false detection rate, and contamination. We studied the source catalog according to multiple cuts of detection and extension likelihood. We find that the detection of clusters is mainly driven by flux and exposure. It depends on secondary effects, such as the size of the clusters and their dynamical state. The cool core bias mostly affects faint clusters classified as point sources, while its impact on the extent-selected sample is small. The measured X-ray luminosity of the detected clusters is compatible with the simulated values. We discuss how to best build samples of galaxy clusters for cosmological purposes, accounting for the nonuniform depth of eROSITA. This simulation provides a digital twin of the real eRASS1.
description: 33 pages, 23 figures, accepted for publication in A&A
High-spin terminating states in the N=88 Ho 155 and Er 156 isotones
Creators: name: Hampson, P.
name: Janssens, R.V.F.
name: Hoffman, C.R.
name: Matta, J.
name: Radford, D.C.
name: Garg, U.
name: Carpenter, M.P.
name: Ayangeakaa, A.D.
name: Petri, M.
name: Mason, P.J.R.
name: Wang, X.
name: Lauritsen, T.
name: Kondev, F.G.
name: Ollier, J.
name: Miller, S.L.
name: Gellanki, J.
name: Riley, M.A.
name: Simpson, J.
name: Hartley, D.J.
name: Chiara, C.J.
name: Nolan, P.J.
name: Zhu, S.
name: Paul, E.S.
name: Rees, J.M.
name: Revill, J.P.
name: Ragnarsson, I.
Publisher: name: American Physical Society
Year: 2015

description: The Sn124(Cl37,6nγ) fusion-evaporation reaction at a bombarding energy of 180 MeV has been used to significantly extend the excitation level scheme of 67155Ho88. The collective rotational behavior of this nucleus breaks down above spin I∼30 and a fully aligned noncollective (band terminating) state has been identified at Iπ=79/2-. Comparison with cranked Nilsson-Strutinsky calculations also provides evidence for core-excited noncollective states at Iπ=87/2- and (89/2+) involving particle-hole excitations across the Z=64 shell gap. A similar core-excited state in 68156Er88 at Iπ=(46+) is also presented.
Footprints Near the Surf: Individual Privacy Decisions in Online Contexts
Creators: name: Aleecia M. McDonald
Publisher: name: Figshare
Year: 2018
Subjects: subject: 160510 Public Policy
subject: FOS: Political science
subject: 99999 Engineering not elsewhere classified
subject: FOS: Other engineering and technologies

description: As more people seek the benefits of going online, more people are exposed to privacy risks from their time online. With a largely unregulated Internet, self-determination about privacy risks must be feasible for people from all walks of life. Yet in many cases decisions are either not obvious or not accessible. As one example, privacy policies are written beyond most adults reading comprehension level, and few people read policies let alone act based on the information policies contain. In my thesis I examine decisions made about threats from website data collection. In the course of multiple studies I use a variety of tools including lab-based studies, online studies, mental models interviews, economic analysis, and analysis of cookies used for tracking. Privacy literature is full of apparent conflicts between people saying they care very much about their privacy, yet not taking the steps required to protect their privacy. By using multiple approaches and crossing multiple disciplines I am able to contribute to a more coherent picture of whether people are able to make choices about protecting their online privacy.
Additional file 1 of The impact of relaxing restrictions on take-home doses during the COVID-19 pandemic on program effectiveness and client experiences in opioid agonist treatment: a mixed methods systematic review
Creators: name: Adams, Alison
name: Blawatt, Sarin
name: Magel, Tianna
name: MacDonald, Scott
name: Lajeunesse, Julie
name: Harrison, Scott
name: Byres, David
name: Schechter, Martin T.
name: Oviedo-Joekes, Eugenia
Publisher: name: figshare
Year: 2024
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Completed reporting checklists.
Role of the νg9/2 orbital in the development of collectivity in the A≈60 region: The case of Co 61
Creators: name: Moerland, D.S.
name: Janssens, R.V.F.
name: Rogers, A.M.
name: Digiovine, B.
name: Lauritsen, T.
name: Chowdhury, P.
name: Ayangeakaa, A.D.
name: Deacon, A.N.
name: Hoffman, C.R.
name: Gade, A.
name: Seweryniak, D.
name: Lister, C.J.
name: Baugher, T.
name: Carpenter, M.P.
name: David, H.M.
name: Kondev, F.G.
name: Nair, C.
name: Alcorta, M.
name: Zhu, S.
name: Chiara, C.J.
name: Bertone, P.F.
name: McCutchan, E.A.
name: Albers, M.
Publisher: name: American Physical Society
Year: 2015

description: An extensive study of the level structure of Co61 has been performed following the complex Mg26(Ca48,2α4npγ)Co61 reaction at beam energies of 275, 290, and 320 MeV using Gammasphere and the Fragment Mass Analyzer (FMA). The low-spin structure is discussed within the framework of shell-model calculations using the GXPF1A effective interaction. Two quasirotational bands consisting of stretched-E2 transitions have been established up to spins I=41/2 and (43/2), and excitation energies of ∼17 and ∼20 MeV, respectively. These are interpreted as signature partners built on a neutron ν(g9/2)2 configuration coupled to a proton πp3/2 state, based on cranked shell model (CSM) calculations and comparisons with observations in neighboring nuclei. In addition, four ΔI=1 bands were populated to high spin, with the yrast dipole band interpreted as a possible candidate for the shears mechanism, a process seldom observed thus far in this mass region.
Electronic materials with nanoscale curved geometries
Creators: name: Gentile, Paola
name: Cuoco, Mario
name: Volkov, Oleksii M.
name: Ying, Zu-Jian
name: Vera-Marun, Ivan J.
name: Makarov, Denys
name: Ortix, Carmine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Research into electronic nanomaterials has recently seen a growing focus into the synthesis of structures with unconventional curved geometries including bent wires in planar systems and three-dimensional architectures obtained by rolling up nanomembranes. The inclusion of these geometries has led to the prediction and observation of a series of novel effects that either result from shape-driven modifications of the electronic motion or from an intrinsic change of electronic and magnetic properties due to peculiar confinement effects. Moreover, local strains often generated by curvature also trigger the appearance of new phenomena due to the essential role played by electromechanical coupling in solids. Here we review the recent developments in the discovery of these shape-, confinement- and strain-induced curvature effects at the nanoscale, and discuss their potential use in electronic and spintronic devices.
description: 17 pages, 4 figures. Review article
Derivative of a hypergraph as a tool for linguistic pattern analysis
Creators: name: Criado-Alonso, Angeles
name: Aleja, David
name: Romance, Miguel
name: Criado, Regino
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The search for linguistic patterns, stylometry and forensic linguistics have in the theory of complex networks, their structures and associated mathematical tools, allies with which to model and analyze texts. In this paper we present a new model supported by several mathematical structures such as the hypergraphs or the concept of derivative graph to introduce a new methodology able to analyze the mesoscopic relationships between sentences, paragraphs, chapters and texts, focusing not only in a quantitative index but also in a new mathematical structure that will be of singular help to both: detecting the style of an author and determining the language level of a text. In addition, these new mathematical structures may be useful to detect similarity and dissimilarity in texts and, eventually, even plagiarism.
The APOGEE Spectroscopic Survey of Kepler Planet Hosts: Feasibility, Efficiency, and First Results
Creators: name: Fleming, Scott W.
name: Mahadevan, Suvrath
name: Deshpande, Rohit
name: Bender, Chad F.
name: Terrien, Ryan C.
name: Marchwinski, Robert C.
name: Wang, Ji
name: Roy, Arpita
name: Stassun, Keivan G.
name: Prieto, Carlos Allende
name: Cunha, Katia
name: Smith, Verne V.
name: Agol, Eric
name: Ak, Hasan
name: Bastien, Fabienne A.
name: Bizyaev, Dmitry
name: Crepp, Justin R.
name: Ford, Eric B.
name: Frinchaboy, Peter M.
name: García-Hernández, Domingo Aníbal
name: Pérez, Ana Elia García
name: Gaudi, B. Scott
name: Ge, Jian
name: Hearty, Fred
name: Ma, Bo
name: Majewski, Steve R.
name: Mészáros, Szabolcs
name: Nidever, David L.
name: Pan, Kaike
name: Pepper, Joshua
name: Pinsonneault, Marc H.
name: Schiavon, Ricardo P.
name: Schneider, Donald P.
name: Wilson, John C.
name: Zamora, Olga
name: Zasowski, Gail
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Kepler mission has yielded a large number of planet candidates from among the Kepler Objects of Interest (KOIs), but spectroscopic follow-up of these relatively faint stars is a serious bottleneck in confirming and characterizing these systems. We present motivation and survey design for an ongoing project with the SDSS-III multiplexed APOGEE near-infrared spectrograph to monitor hundreds of KOI host stars. We report some of our first results using representative targets from our sample, which include current planet candidates that we find to be false positives, as well as candidates listed as false positives that we do not find to be spectroscopic binaries. With this survey, KOI hosts are observed over ~20 epochs at a radial velocity precision of 100-200 m/s. These observations can easily identify a majority of false positives caused by physically-associated stellar or substellar binaries, and in many cases, fully characterize their orbits. We demonstrate that APOGEE is capable of achieving RV precision at the 100-200 m/s level over long time baselines, and that APOGEE's multiplexing capability makes it substantially more efficient at identifying false positives due to binaries than other single-object spectrographs working to confirm KOIs as planets. These APOGEE RVs enable ancillary science projects, such as studies of fundamental stellar astrophysics or intrinsically rare substellar companions. The coadded APOGEE spectra can be used to derive stellar properties (T_eff, log(g)) and chemical abundances of over a dozen elements to probe correlations of planet properties with individual elemental abundances.
description: Accepted in AJ, 17 pages, 13 figures, 4 tables
Standardized Workflows and NMDC EDGE Training: Spanish Translation
Creators: name: Rodríguez-Ramos, Josué
name: Kelliher, Julia
name: Rodriguez, Francisca
name: Johnson, Leah
name: Eloe-Fadrosh, Emiley
Publisher: name: Zenodo
Year: 2023

description: 2023 NMDC Ambassador presentation translated into Spanish for Josué Rodríguez-Ramos' event
Testing Magnetic Field Models for the Class 0 Protostar L1527
Creators: name: Davidson, J. A.
name: Li, Z. -Y.
name: Hull, C. L. H.
name: Plambeck, R. L.
name: Kwon, W.
name: Crutcher, R. M.
name: Looney, L. W.
name: Novak, G.
name: Chapman, N. L.
name: Matthews, B. C.
name: Stephens, I. W.
name: Tobin, J. J.
name: Jones, T. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: For the Class 0 protostar, L1527, we compare 131 polarization vectors from SCUPOL/JCMT, SHARP/CSO and TADPOL/CARMA observations with the corresponding model polarization vectors of four ideal-MHD, non-turbulent, cloud core collapse models. These four models differ by their initial magnetic fields before collapse; two initially have aligned fields (strong and weak) and two initially have orthogonal fields (strong and weak) with respect to the rotation axis of the L1527 core. Only the initial weak orthogonal field model produces the observed circumstellar disk within L1527. This is a characteristic of nearly all ideal-MHD, non-turbulent, core collapse models. In this paper we test whether this weak orthogonal model also has the best agreement between its magnetic field structure and that inferred from the polarimetry observations of L1527. We found that this is not the case; based on the polarimetry observations the most favored model of the four is the weak aligned model. However, this model does not produce a circumstellar disk, so our result implies that a non-turbulent, ideal-MHD global collapse model probably does not represent the core collapse that has occurred in L1527. Our study also illustrates the importance of using polarization vectors covering a large area of a cloud core to determine the initial magnetic field orientation before collapse; the inner core magnetic field structure can be highly altered by a collapse and so measurements from this region alone can give unreliable estimates of the initial field configuration before collapse.
description: 43 pages, 9 figures, 4 tables. Accepted by the Astrophysical Journal
Sensitivity of propagation and energy deposition in femtosecond filamentation to the nonlinear refractive index
Creators: name: Rosenthal, E. W.
name: Palastro, J. P.
name: Jhajj, N.
name: Zahedpour, S.
name: Wahlstrand, J. K.
name: Milchberg, H. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The axial dependence of femtosecond filamentation in air is measured under conditions of varying laser pulsewidth, energy, and focusing f-number. Filaments are characterized by the ultrafast z-dependent absorption of energy from the laser pulse and diagnosed by measuring the local single cycle acoustic wave generated. Results are compared to 2D+1 simulations of pulse propagation, whose results are highly sensitive to the instantaneous (electronic) part of the nonlinear response of $N_2$ and $O_2$. We find that recent measurements of the nonlinear refractive index ($n_2$) in [J.K. Wahlstrand et al., Phys. Rev. A. 85, 043820 (2012)] provide the best match and an excellent fit between experiments and simulations.
description: 15 pages, 4 figures
Evaluation of Metabolic Enzyme Inhibitory Potency with Molecular Docking Assisted Studies: Phenolic Compound Analysis of Seseli resinosum
Creators: name: Kaya, Zafer
name: İmamoğlu, Rizvan
name: Ceylan, Kevser Betül
name: Genç, Nusret
name: Kısa, Dursun
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Hematology
subject: 60506 Virology

description: Seseli taxa are widely known as a traditional medicinal herb, and S. resinosum collected from stony and rocky areas is endemic to the flora of Turkey. In this study, to reveal the plant's pharmacological importance, its ability to inhibit some medicinal enzymes was examined, assisted by molecular docking studies and phytochemical component analysis. The IC50 values for studied enzymes were calculated between 0.434 - 92.81 μg/mL, and the extract has lower inhibitory concentrations against α-glucosidase, α-amylase, and HMG_CoA reductase involved in carbohydrate and cholesterol metabolism. In addition, reverse-phase HPLC analysis was performed to correlate the enzyme inhibition ability with phenolic compositions. Benzoic acid and methyl chavicol were detected as the most abundant ingredients with the amount of 204.50±2.23 and 93.18±1.01 μg g-1, respectively. TPC and TFC of the extract were founded at 31.23 ± 0.56 GAE/g and 5.54 ± 0.11 QE/g, respectively. The extract showed inhibitory and lethal effects, especially against all tested gram-negative strains at 7.5 and 15 mg mL-1, respectively. In conclusion, the present study demonstrated that S. resinosum extract harbors bioactive compounds with inhibitory properties such as benzoic acid and catechin. It is expected that these primary data on the S. resinosum may contribute to building new experimental studies to open new avenues for research to support the pharmacological effects.
Recent results at ultrahigh spin: Terminating states and beyond in mass 160 rare-earth nuclei
Creators: name: Paul, E.S.
name: Rees, J.M.
name: Kondev, F.G.
name: Lauritsen, T.
name: Hoffman, C.R.
name: Zhu, S.
name: Nolan, P.J.
name: Ayangeakaa, A.D.
name: Petri, M.
name: Hampson, P.
name: Riley, M.A.
name: Chiara, C.J.
name: Garg, U.
name: Revill, J.P.
name: Janssens, R.V.F.
name: Mason, P.J.R.
name: Ragnarsson, I.
name: Miller, S.L.
name: Hartley, D.J.
name: Simpson, J.
name: Carpenter, M.P.
name: Baron, J.S.
name: Wang, X.
name: Ollier, J.
name: Radford, D.C.
name: Matta, J.
Publisher: name: Jagiellonian University
Year: 2015

description: A classic region of band termination at high spin occurs in rare-earth nuclei with around ten valence nucleons above the 146Gd closed core. Results are presented here for such non-collective oblate (γ = 60°) terminating states in odd-Z 155Ho, odd-odd 156Ho, and even-even 156Er, where they are compared with neighbouring nuclei. In addition to these particularly favoured states, the occurrence of collective triaxial strongly deformed (TSD) bands, bypassing the terminating states and extending to over 65h, is reviewed.
Nature and Scalings of Density Fluctuations of Compressible MHD Turbulence with Applications to the Solar Wind
Creators: name: Fu, Xiangrong
name: Li, Hui
name: Gan, Zhaoming
name: Du, Senbei
name: Steinberg, John
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The solar wind is a magnetized and turbulent plasma. Its turbulence is often dominated by Alfvénic fluctuations and often deemed as nearly incompressible far away from the Sun, as shown by in-situ measurements near 1AU. However, for solar wind closer to the Sun, the plasma $β$ decreases (often lower than unity) while the turbulent Mach number $M_t$ increases (can approach unity, e.g., transonic fluctuations). These conditions could produce significantly more compressible effects, characterized by enhanced density fluctuations, as seen by several space missions. In this paper, a series of 3D MHD simulations of turbulence are carried out to understand the properties of compressible turbulence, particularly the generation of density fluctuations. We find that, over a broad range of parameter space in plasma $β$, cross helicity and polytropic index, the turbulent density fluctuations scale linearly as a function of $M_t$, with the scaling coefficients showing weak dependence on parameters. Furthermore, through detailed spatio-temporal analysis, we show that the density fluctuations are dominated by low-frequency nonlinear structures, rather than compressible MHD eigen-waves. These results could be important for understanding how compressible turbulence contributes to solar wind heating near the Sun.
Additional file 1 of Analyzing mechanisms of interdisciplinary cooperation in promoting students’ health at university
Creators: name: Bachert, Philip
name: Wolbring, Laura
name: Hildebrand, Claudia
name: Woll, Alexander
name: Wäsche, Hagen
Publisher: name: figshare
Year: 2024
Subjects: Science Policy
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified

description: Supplementary Material 1
Graph Structured Normal Means Inference
Creators: name: Sharpnack, James
Publisher: name: Figshare
Year: 2018
Subjects: subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: This thesis addresses statistical estimation and testing of signals over a graph when measurements are noisy and high-dimensional. Graph structured patterns appear in applications as diverse as sensor networks, virology in human networks, congestion in internet routers, and advertising in social networks. We will develop asymptotic guarantees of the performance of statistical estimators and tests, by stating conditions for consistency by properties of the graph (e.g. graph spectra). The goal of this thesis is to demonstrate theoretically that by exploiting the graph structure one can achieve statistical consistency in extremely noisy conditions.
We begin with the study of a projection estimator called Laplacian eigenmaps, and find that eigenvalue concentration plays a central role in the ability to estimate graph structured patterns. We continue with the study of the edge lasso, a least squares procedure with total variation penalty, and determine combinatorial conditions under which changepoints (edges across which the underlying signal changes) on the graph are recovered. We will shift focus to testing for anomalous activations in the graph, using the scan statistic relaxations, the spectral scan statistic and the graph ellipsoid scan statistic. We will also show how one can form a decomposition of the graph from a spanning tree which will lead to a test for activity in the graph. This will lead to the construction of a spanning tree wavelet basis, which can be used to localize activations on the graph.
Hot magnetic halo of NGC628 (M74)
Creators: name: Wezgowiec, M.
name: Beck, R.
name: Hanasz, M.
name: Soida, M.
name: Ehle, M.
name: Dettmar, R. -J.
name: Urbanik, M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In several spiral galaxies that are observed face-on, large-scale ordered magnetic fields (the so-called magnetic arms) were found. One of the explanations was the action of the magnetic reconnection, which leads to a higher ordering of the magnetic fields. Because it simultaneously converts the energy of the magnetic fields into thermal energy of the surroundings, magnetic reconnection has been considered as a heating mechanism of the interstellar medium for many years. Until recently, no clear observational evidence for this phenomenon was found. We search for possible signatures of gas heating by magnetic reconnection effects in the radio and X-ray data for the face-on spiral galaxy NGC628 (M74), which presents pronounced magnetic arms and evidence for vertical magnetic fields. The strengths and energy densities of the magnetic field in the spiral and magnetic arms were derived, as were the temperatures and thermal energy densities of the hot gas, for the disk and halo emission. In the regions of magnetic arms, higher order and lower energy density of the magnetic field is found than in the stellar spiral arms. The global temperature of the hot gas is roughly constant throughout the disk. The comparison of the findings with those obtained for the starburst galaxy M83 suggests that magnetic reconnection heating may be present in the halo of NGC628. The joint analysis of the properties of the magnetic fields and the hot gas in NGC628 also provided clues for possible tidal interaction with the companion galaxy.
description: 13 pages, 10 figures, 9 tables. Accepted for publication in A&A
New trends in the nanophysics of ferroics, relaxors and multiferroics
Creators: name: Glinchuk, M. D.
name: Yurchenko, L. P.
name: Eliseev, E. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The review covers the theoretical and experimental results obtained in the recent years by the scientists with the help of comprehensive investigation of nanoferroics and multiferroics. The main attention will be paid to spontaneous flexoeffects and reentrant phase in nanoferroics as well as to a recently discovered giant magnetoelectric effect in multiferroics.
description: 15 pages, 8 figures
Renewable build-up pathways for the US: Generation costs are not system costs
Creators: name: Becker, Sarah
name: Frew, Bethany A.
name: Andresen, Gorm B.
name: Jacobson, Mark Z.
name: Schramm, Stefan
name: Greiner, Martin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The transition to a future electricity system based primarily on wind and solar PV is examined for all regions in the contiguous US. We present optimized pathways for the build-up of wind and solar power for least backup energy needs as well as for least cost obtained with a simplified, lightweight model based on long-term high resolution weather-determined generation data. In the absence of storage, the pathway which achieves the best match of generation and load, thus resulting in the least backup energy requirements, generally favors a combination of both technologies, with a wind/solar PV energy mix of about 80/20 in a fully renewable scenario. The least cost development is seen to start with 100% of the technology with the lowest average generation costs first, but with increasing renewable installations, economically unfavorable excess generation pushes it toward the minimal backup pathway. Surplus generation and the entailed costs can be reduced significantly by combining wind and solar power, and/or absorbing excess generation, for example with storage or transmission, or by coupling the electricity system to other energy sectors.
description: 11 pages, 6 figures