cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Jets and outflows of massive protostars - From cloud collapse to jet launching and cloud dispersal
Creators: name: Kölligan, Anders
name: Kuiper, Rolf
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In a comprehensive convergence study, we investigate the computational conditions necessary to resolve disk formation and jet-launching processes, and analyze possible caveats. We explore the magneto-hydrodynamic (MHD) processes of the collapse of massive prestellar cores in detail, including an analysis of the forces involved and their temporal evolution for up to two free-fall times. We conduct MHD simulations, combining nonideal MHD, self-gravity, and very high resolutions as they have never been achieved before. Our setup includes a 100 Msol cloud core that collapses under its own self-gravity to self-consistently form a dense disk structure and launch tightly collimated magneto-centrifugal jets and wide-angle winds. Our high-resolution simulations can resolve a magneto-centrifugal jet and a magnetic pressure-driven outflow, separately. The nature of the outflows depends critically on spatial resolution. Only high-resolution simulations are able to differentiate a magneto-centrifugally launched, highly collimated jet from a slow wide-angle magnetic-pressure-driven tower flow. Of these two outflow components, the tower flow dominates angular-momentum transport. The mass outflow rate is dominated by the entrained material from the interaction of the jet with the stellar environment and only part of the ejected medium is directly launched from the accretion disk. A tower flow can only develop to its full extent when much of the original envelope has already dispersed. Taking into account both the mass launched from the surface of the disk and the entrained material from the envelope, we find an ejection-to-accretion efficiency of 10%. Nonideal MHD is required to form centrifugally supported accretion disks and the disk size is strongly dependent on spatial resolution.
Robust Free-Space Optical Communication Utilizing Polarization
Creators: name: Savino, Nicholas J.
name: Leamer, Jacob M.
name: Saripalli, Ravi K.
name: Zhang, Wenlei
name: Bondar, Denys I.
name: Glasser, Ryan T.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Free-space optical (FSO) communication can be subject to various types of distortion and loss as the signal propagates through non-uniform media. In experiment and simulation, we demonstrate that the state of polarization and degree of polarization of light passed though underwater bubbles, causing turbulence, is preserved. Our experimental setup serves as an efficient, low cost alternative approach to long distance atmospheric or underwater testing. We compare our experimental results with those of simulations, in which we model underwater bubbles, and separately, atmospheric turbulence. Our findings suggest potential improvements in polarization based FSO communication schemes.
description: 13 pages, 5 figures
Resampled random processes in gravitational-wave data analysis
Creators: name: Krolak, Andrzej
name: Tinto, Massimo
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The detection of continuous gravitational-wave signals requires to account for the motion of the detector with respect to the solar system barycenter in the data analysis. In order to search efficiently for such signals by means of the fast Fourier transform the data needs to be transformed from the topocentric time to the barycentric time by means of resampling. The resampled data form a non-stationary random process. In this communication we prove that this non-stationary random process is mathematically well defined, and show that generalizations of the fundamental results for stationary processes, like Wiener-Khintchine theorem and Cramèr representation, exist.
description: 7 pages
Fragmented Rockfall Volume Distribution from Photogrammetry-Based Structural Mapping and Discrete Fracture Networks
Creators: Macciotta, Renato
Gräpel, Chris
Skirrow, Roger
Publisher: name: University of Alberta Library
Year: 2020

The design of rockfall protection structures requires information about the falling block volumes. Computational tools for rockfall trajectory simulation are now capable of modeling block fragmentation, requiring the fragmented volume-relative frequency distribution of rockfalls as input. This can be challenging at locations with scarce or nonexistent rockfall records and where block surveys are not feasible. The work in this paper shows that simple discrete fracture network realizations from structural mapping based on photogrammetric techniques can be used to reliably estimate rock fall block volumes. These estimates can be used for dimensioning rockfall protection structures in cases where data is scarce or not available. The methodology is tested at two sites in the Canadian Cordillera where limestone outcrops have been the source of recurrent rockfalls. The results suggest that fragmentation will largely tend to occur through weak planes and expansion of non-persistent discontinuities, while other block breakage mechanisms exert less influence in the fragmented volume-relative frequency distribution of rockfalls. Therefore, block volume distribution can be estimated using a simple discrete fracture network (DFN) with fully persistent discontinuities. Limitations of the methods are also discussed, as well as potential future research to address such limitations.
Influence of the temperature on the depinning transition of driven interfaces
Creators: name: Nowak, U.
name: Usadel, K. D.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the dynamics of a driven interface in a two-dimensional random-field Ising model close to the depinning transition at small but finite temperatures T using Glauber dynamics. A square lattice is considered with an interface initially in (11)-direction. The drift velocity v is analyzed for the first time using finite size scaling at T = 0 and additionally finite temperature scaling close to the depinning transition. In both cases a perfect data collapse is obtained from which we deduce beta = 1/3 for the exponent which determines the dependence of v on the driving field, nu = 1 for the exponent of the correlation length and delta = 5 for the exponent which determines the dependence of v on T.
description: 5 pages, Latex, Figures included, to appear in Europhys. Lett
Robust Control of the Sit-to-Stand Movement for a Powered Lower Limb Orthosis
Creators: name: Narvaez-Aroche, Octavio
name: Meyer, Pierre-Jean
name: Tu, Stephen
name: Packard, Andrew
name: Arcak, Murat
Publisher: name: arXiv
Year: 2018
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The sit-to-stand movement is a key feature for wide adoption of powered lower limb orthoses for patients with complete paraplegia. In this paper we study the control of the ascending phase of the sit-to-stand movement for a minimally actuated powered lower limb orthosis at the hips. First, we generate a pool of finite horizon Linear Quadratic Regulator feedback gains, designed under the assumption that we can control not only the torque at the hips but also the loads at the shoulders that in reality are applied by the user. Next we conduct reachability analysis to define a performance metric measuring the robustness of each controller against parameter uncertainty, and choose the best controller from the pool with respect to this metric. Then, we replace the presumed shoulder control with an Iterative Learning Control algorithm as a substitute for human experiments. Indeed this algorithm obtains torque and forces at the shoulders that result in successful simulations of the sit-to-stand movement, regardless of parameter uncertainty and factors deliberately introduced to hinder learning. Thus it is reasonable to expect that the superior cognitive skills of real users will enable them to cooperate with the hip torque controller through training.
description: 19 pages, 14 figures
Lanczos Boosted Numerical Linked-Cluster Expansion for Quantum Lattice Models
Creators: name: Bhattaram, Krishnakumar
name: Khatami, Ehsan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Numerical linked-cluster expansions allow one to calculate finite-temperature properties of quantum lattice models directly in the thermodynamic limit through exact solutions of small clusters. However, full diagonalization is often the limiting factor for these calculations. Here, we show that a partial diagonalization of the largest clusters in the expansion using the Lanczos algorithm can be as useful as full diagonalization for the method while mitigating some of the time and memory issues. As a test case, we consider a frustrated Heisenberg model on the checkerboard lattice and find that our approach can lead to much more efficient calculations in a parallel environment.
description: 6 pages, 6 figures
Newton polygons and resonances of multiple delta-potentials
Creators: name: Datchev, Kiril
name: Marzuola, Jeremy L.
name: Wunsch, Jared
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 35P25, 47A40, 81U15, 58J50

description: We prove explicit asymptotics for the location of semiclassical scattering resonances in the setting of $h$-dependent delta-function potentials on $\mathbb{R}$. In the cases of two or three delta poles, we are able to show that resonances occur along specific lines of the form $\Im z \sim -γh \log(1/h).$ More generally, we use the method of Newton polygons to show that resonances near the real axis may only occur along a finite collection of such lines, and we bound the possible number of values of the parameter $γ.$ We present numerical evidence of the existence of more and more possible values of $γ$ for larger numbers of delta poles.
description: 17 pages. New version incorporating suggestions from referee and miscellaneous minor corrections. To appear in Trans. AMS
Risk Factors and Effective Treatments of Postpartum Depression in Young Adult Mothers
Creators: name: Supitchayanee Pongpidet
name: Tanaput Surawattanavisetpa
name: Kawinnart Thanakijborisut
name: Bhuwasit Seenprachawong
name: Nahathai Srisuwan
name: Muchchimaporn Chatkittikunwong
name: Panida Saengkrajang
name: Witchapon Promkaew
name: Chanathip Phaocharoen
name: Thidarat Thodthankhun
name: Sarawul Lapmanee
Publisher: name: Text and Journal Publication
Year: 2021
Subjects: risk factor
treatment
postpartum depression
young adult

description: Vajira Medical Journal, 65, 3, 211-220
Why the lowest Landau level approximation works in strongly type II superconductors
Creators: name: Li, Dingping
name: Rosenstein, Baruch
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Higher than the lowest Landau level contributions to magnetization and specific heat of superconductors are calculated using Ginzburg - Landau equations approach. Corrections to the excitation spectrum around solution of these equations (treated perturbatively) are found. Due to symmetries of the problem leading to numerous cancellations the range of validity of the LLL approximation in mean field is much wider then a naive range and extends all the way down to $H = {H_{c2}(T)}/13$. Moreover the contribution of higher Landau levels is significantly smaller compared to LLL than expected naively. We show that like the LLL part the lattice excitation spectrum at small quasimomenta is softer than that of usual acoustic phonons. This enhanses the effect of fluctuations. The mean field calculation extends to third order, while the fluctuation contribution due to HLL is to one loop. This complements the earlier calculation of the LLL part to two loop order.
description: 20 pages, Latex file, three figures
In vitro investigating of anticancer activity of new 7-MEOTA-tacrine heterodimers
Creators: name: Janockova, Jana
name: Korabecny, Jan
name: Plsikova, Jana
name: Babkova, Katerina
name: Konkolova, Eva
name: Kucerova, Dana
name: Vargova, Jana
name: Koval, Jan
name: Jendzelovsky, Rastislav
name: Fedorocko, Peter
name: Kasparkova, Jana
name: Brabec, Viktor
name: Rosocha, Jan
name: Soukup, Ondrej
name: Hamulakova, Slavka
name: Kuca, Kamil
name: Kozurkova, Maria
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: A combination of biochemical, biophysical and biological techniques was used to study calf thymus DNA interaction with newly synthesized 7-MEOTA-tacrine thiourea 12–17 and urea heterodimers 18–22, and to measure interference with type I and II topoisomerases. Their biological profile was also inspected in vitro on the HL-60 cell line using different flow cytometric techniques (cell cycle distribution, detection of mitochondrial membrane potential dissipation, and analysis of metabolic activity/viability). The compounds exhibited a profound inhibitory effect on topoisomerase activity (e.g. compound 22 inhibited type I topoisomerase at 1 µM concentration). The treatment of HL-60 cells with the studied compounds showed inhibition of cell growth especially with hybrids containing thiourea (14–17) and urea moieties (21 and 22). Moreover, treatment of human dermal fibroblasts with the studied compounds did not indicate significant cytotoxicity. The observed results suggest beneficial selectivity of the heterodimers as potential drugs to target cancer cells.
Resonant inelastic x-ray incarnation of Young's double-slit experiment
Creators: name: Revelli, A.
name: Sala, M. Moretti
name: Monaco, G.
name: Becker, P.
name: Bohatý, L.
name: Hermanns, M.
name: Koethe, T. C.
name: Fröhlich, T.
name: Warzanowski, P.
name: Lorenz, T.
name: Streltsov, S. V.
name: van Loosdrecht, P. H. M.
name: Khomskii, D. I.
name: Brink, J. van den
name: Grüninger, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Young's archetypal double-slit experiment forms the basis for modern diffraction techniques: the elastic scattering of waves yields an interference pattern that captures the real-space structure. Here, we report on an inelastic incarnation of Young's experiment and demonstrate that resonant inelastic x-ray scattering (RIXS) measures interference patterns which reveal the symmetry and character of electronic excited states in the same way as elastic scattering does for the ground state. A prototypical example is provided by the quasi-molecular electronic structure of insulating Ba3CeIr2O9 with structural Ir dimers and strong spin-orbit coupling. The double 'slits' in this resonant experiment are the highly localized core levels of the two Ir atoms within a dimer. The clear double-slit-type sinusoidal interference patterns that we observe allow us to characterize the electronic excitations, demonstrating the power of RIXS interferometry to unravel the electronic structure of solids containing, e.g., dimers, trimers, ladders, or other superstructures.
description: 8 pages, 8 figures
Synthesis, surface active properties and applications of cationic gemini surfactants from triethylenetetramine
Creators: name: Ishwar T. Gawali
name: Ghayas A. Usmani
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: The 2-Alkyl-1-diethylenediaminimidazoline based Gemini amphiphiles were successfully synthesized in a two step methodology. In the first steps, triethylenetetramine was reacted with fatty acids namely viz. caprylic acid, lauric acid, myristic acid & palmitic acid to get the corresponding amides which on continuous heating results into 2-alkyl-1-diethylenediaminimidazoline. These imidazolines in second step were reacted with 1, 6-dibromohexane to form targeted cationic Gemini surfactants. The chemical structure of compounds was confirmed by means of FTIR, 1H-NMR and 13C-NMR spectroscopy. The effect of alkyl chain length of synthesized surfactants on the basic characteristics such as surface tension, foaming, emulsifying capability, lime soap dispersing power and wetting were studied. These new surfactants were investigated for their biodegradability, anticorrosion and antimicrobial activity. They have capacity to reduce surface tension of water from 71.8 mN.m−1 to 27.42 mN.m−1. The 2-octyl-1-diethylenediaminimidazoline based Gemini surfactant (GSCTDH) showed good biocidal activity against gram positive Bacteria Bacillis subtilis (16.57 mm) & Staphylococcus aureus (19.46 mm). The 2-dodecyl-1-diethylenediaminimidazoline based Gemini surfactant GSLTDH has good inhibition against gram negative bacteria Pseudomonas aeruginosa (14.33 mm) and Escherichia coli (18.31 mm). The biodegradation results allowed classification of synthesis compounds as readily biodegradable. The Gemini surfactant GSCTDH has 96.71% inhibition efficiency against carbon steel. It can be used as an anticorrosion agent.
Radio Pulses from Cosmic Ray Air Showers
Creators: name: Weekes, Trevor C.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first experiment in which radio emission was detected from high energy particles is described. An array of dipoles was operated by a team of British and Irish physicists in 1964-5 at the Jodrell Bank Radio Observatory in conjunction with a simple air shower trigger. The array operated at 44 MHz with 2.75 MHz bandwidth. Out of 4,500 triggers a clear bandwidth-limited radio pulse was seen in 11 events. This corresponded to a cosmic ray trigger threshold of 5x10^16 eV and was of intensity close to that predicted. The early experiments which followed this discovery and their interpretation is described.
description: 11 pages, 4 figures. Proceedings of the First International Workshop on Radio Detection of High Energy Particles, UCLA, Nov 16-18, 2000, to be published by the AIP
Thinouia Triana & Planchon
Creators: name: Medeiros, Herison
name: Acevedo-Rodríguez, Pedro
name: de Carvalho Lopes, Jenifer
name: Forzza, Rafaela Campostrini
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Sapindales
Sapindaceae
Thinouia

description: Thinouia Triana & Planchon, Ann. Sci. Nat. Bot. Ser. 4, 18: 368. 1862
Carpidiopterix H. Karsten, Fl. Columb. 2: 45. 1863. Type: Carpidiopterix macroptera (Cassar.) H. Karst. = Thinouia scandens (Cambess.) Trian. & Planch.
Allosanthus Radlk. in A. Engler., Pflanzenr. IV. 165. (Heft 98): 1157. 1933. Type: Allosanthus trifoliolatus Radlk. = Thinouia trifoliolata (Radlk.) Acev.-Rodr. & Ferrucci
Type.
Thinouia myriantha Triana & Planchon.
Description.
Lianas or seldom shrubs with arched branches; climbing with the aid of a pair of circinate tendrils that are proximal to the floriferous part of the inflorescence and homologous to a cincinnus. Stems terete or ribbed, lenticellate; cross-sections of branches and young stems simple, i. e., with single vascular cylinders, some species developing a compound stem where 1–5 (7–8) vascular cylinders are formed within the cortex, these becoming wider as the stem grows wider. Stipules minute, axillary, deltate to lanceolate, early deciduous. Leaves alternate, trifoliolate; petioles and petiolules unwinged. Inflorescences of umbelliform or racemiform thyrses, often bearing a pair of tendrils at the base of the rachis, axillary or forming a frondobracteate synflorescence on distal portion of branches, rarely cauliflorous, peduncle and secondary peduncle, sometimes sessiles; flowers produced in cincinni; pedicels articulated. Flowers actinomorphic; calyx cup-shaped, partly connate, sepals 5, valvate, of equal size; petals 5, obovate to spatulate, with a pair of short appendages, smaller or equal than the petals or longer than the petals, sometime clawed; disc extrastaminal, annular, rarely 5 - lobed; stamens 6–8, filaments equal or in two unequal series, anthers dorsifixed; pollen isopolar, obtusely triangular in polar view, subspherical in equatorial view, tricolporate, with elongated colpi nearly reaching the poles, striate; ovary 3 - carpellate, the ovules solitary with axile placentation; style elongated with 3 papillose stigmatic branches. Fruit schizocarpic, stipitate, splitting into 3 mericarps, each with a distal wing, the seed locus subglobose, lenticular or rarely flattened; seed trigonous-ellipsoid, or lenticular-ellipsoid, exarillate, with a small hilum.
description: Published as part of Medeiros, Herison, Acevedo-Rodríguez, Pedro, de Carvalho Lopes, Jenifer & Forzza, Rafaela Campostrini, 2025, Taxonomic revision and phylogenetic relationships of Thinouia (Sapindaceae), a neotropical genus, pp. 207-273 in PhytoKeys 252 on pages 207-273, DOI: 10.3897/phytokeys.252.129621
The Prefetch Aggressiveness Tradeoff in 360$^{\circ}$ Video Streaming
Creators: name: Almquist, Mathias
name: Almquist, Viktor
name: Krishnamoorthi, Vengatanathan
name: Carlsson, Niklas
name: Eager, Derek
Publisher: name: arXiv
Year: 2018
Subjects: subject: Multimedia (cs.MM)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: H.5.1; H.4; C.2.2; C.2.4; C.4
subject: 68M10, 68M12, 68M14, 68M20

description: With 360$^{\circ}$ video, only a limited fraction of the full view is displayed at each point in time. This has prompted the design of streaming delivery techniques that allow alternative playback qualities to be delivered for each candidate viewing direction. However, while prefetching based on the user's expected viewing direction is best done close to playback deadlines, large buffers are needed to protect against shortfalls in future available bandwidth. This results in conflicting goals and an important prefetch aggressiveness tradeoff problem regarding how far ahead in time from the current playpoint prefetching should be done. This paper presents the first characterization of this tradeoff. The main contributions include an empirical characterization of head movement behavior based on data from viewing sessions of four different categories of 360$^{\circ}$ video, an optimization-based comparison of the prefetch aggressiveness tradeoffs seen for these video categories, and a data-driven discussion of further optimizations, which include a novel system design that allows both tradeoff objectives to be targeted simultaneously. By qualitatively and quantitatively analyzing the above tradeoffs, we provide insights into how to best design tomorrow's delivery systems for 360$^{\circ}$ videos, allowing content providers to reduce bandwidth costs and improve users' playback experiences.
description: This paper is an extended version of our original ACM MMSys 2018 paper. Please cite our original paper (with the same title) published in ACM Multimedia Systems (MMSys), Amsterdam, Netherlands, June 2018, pp. 258-269
Solvent distribution effects on quantum chemical calculations with quantum computers
Creators: name: Yoshida, Yuichiro
name: Mizukami, Wataru
name: Yoshida, Norio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a combination of three-dimensional reference interaction site model self-consistent field (3D-RISM-SCF) theory and the variational quantum eigensolver (VQE) to consider the solvent distribution effects within the framework of quantum-classical hybrid computing. The present method, 3D-RISM-VQE, does not include any statistical errors from the solvent configuration sampling owing to the analytical treatment of the statistical solvent distribution. We apply 3D-RISM-VQE to compute the spatial distribution functions of solvent water around a water molecule, the potential and Helmholtz energy curves of NaCl, and to conduct Helmholtz energy component analysis of H$_2$O and NH$_4^+$. Moreover, we utilize 3D-RISM-VQE to analyze the extent to which solvent effects alter the efficiency of quantum calculations compared with calculations in the gas phase using the $L^1$-norms of molecular electronic Hamiltonians. Our results demonstrate that the efficiency of quantum chemical calculations on a quantum computer in solution is virtually the same as in the gas phase.
description: Y.Y. and W.M. contributed equally. 10 pages, 6 figures
Multichannel Approach to Clustering Matter
Creators: name: Yukalov, V. I.
name: Yukalova, E. P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An approach is developed, combining the ideas of quantum statistical mechanics and multichannel theory of scattering, for treating statistical systems whose constituents can possess different bound states realized as compact clusters. The main principles for constructing multichannel cluster Hamiltonians are formulated: principle of statistical correctness, principle of cluster coexistence, and principle of potential scaling. The importance of the principle of statistical correctness is emphasized by showing that when it does not hold the behaviour of thermodynamic functions becomes essentially distorted. And moreover, unphysical instabilities can appear. The ideas are carefully illustrated by a statistical model of hot nuclear matter.
description: 1 file, LaTex, no figures
Collagen. Praktiken forschenden Entwerfens und entwerfenden Forschens
Creators: name: Wehmeyer, Sarah
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität
Year: 2024
Subjects: subject: Collage
subject: Reflexive Design
subject: Design Knowledge
subject: Design Research
subject: Design Theory
subject: Design Methodology
subject: Image Theory
subject: Visual Knowledge
subject: Architecture and Art
subject: Art Research
subject: Architektur und Kunst
subject: Reflexives Entwerfen
subject: Entwurfswissen
subject: Entwurfsforschung
subject: Entwurfstheorie
subject: Entwurfsmethodik
subject: Bildtheorie
subject: Wissensmedium Bild
subject: Umbaukultur
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: Die Collage erlebt in der zeitgenössischen Architektur ein Comeback als Darstellungsmedium. Entwerfende imitieren digital den typischen Schichtcharakter, um Bilder zu generieren, die keine idealisierte, vielmehr eine ehrliche und leicht zugängliche Architektur vermitteln. Diese Darstellungen haben wenig mit der ursprünglich künstlerischen Technik des Überlagerns und Klebens von realen Papier- und Materialfragmenten gemeinsam. Ebenso wenig verfolgen sie das Ziel der Collagenkunst, die eigene Disziplin in ihrer Zugänglichkeit zu kritisieren und mit tradierten Darstellungs- und Wahrnehmungsmustern zu brechen. Die Dissertation widmet sich den Ausnahmen: Architekturschaffenden der Gegenwart, bei denen die Collage über das Darstellerische hinaus als eine Entwurfs- und Forschungspraktik etabliert ist, ebenso wie als Ausdruck einer bestimmten Haltung zur Architektur und zum Architekturbild.
Text Difficulty Study: Do machines behave the same as humans regarding text difficulty?
Creators: name: Chen, Bowen
name: Ding, Xiao
name: Du, Li
name: Bing, Qin
name: Liu, Ting
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Given a task, human learns from easy to hard, whereas the model learns randomly. Undeniably, difficulty insensitive learning leads to great success in NLP, but little attention has been paid to the effect of text difficulty in NLP. In this research, we propose the Human Learning Matching Index (HLM Index) to investigate the effect of text difficulty. Experiment results show: (1) LSTM has more human-like learning behavior than BERT. (2) UID-SuperLinear gives the best evaluation of text difficulty among four text difficulty criteria. (3) Among nine tasks, some tasks' performance is related to text difficulty, whereas some are not. (4) Model trained on easy data performs best in easy and medium data, whereas trains on a hard level only perform well on hard data. (5) Training the model from easy to hard leads to fast convergence.
description: 4-page main content short paper,3 figures, intend to submit at a conference
Orbital Magnetic Ordering in Disordered Mesoscopic Systems
Creators: name: Lisowski, M.
name: Zipper, E.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present some model calculations of persistent currents in disordered one- and two-dimensional mesoscopic systems. We use the tight-binding model and calculate numerically the currents in small systems for several values of disorder. Next we fit appropriate analytical formulae, and using them we find self- -sustaining currents and critical fields in larger, more realistic systems with different shapes of the Fermi surfaces.
description: 16 pages, LaTeX, 8 figures, in print in J. Magn. Magn. Mat
A transferable artificial neural network model for atomic forces in nanoparticles
Creators: name: Jindal, Shweta
name: Bulusu, Satya S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We have designed a new method to fit the energy and atomic forces using a single artificial neural network (SANN) for any number of chemical species present in a molecular system. The traditional approach for fitting the potential energy surface (PES) for a multicomponent (MC) system using artificial neural network (ANN) is to consider n number of networks for n number of chemical species in the system. This shoots the computational cost and makes it difficult to apply to a system containing more number of species. We present a new strategy of using a SANN to compute energy and forces of a chemical system. Since, atomic forces are significant for geometry optimizations and molecular dynamics simulations (MDS) for any chemical system, their accurate prediction is of utmost importance. So, to predict the atomic forces, we have modified the traditional way of fitting forces from underlying energy expression. We have applied our strategy to study geometry optimizations and dynamics in gold-silver nanoalloys and thiol protected gold nanoclusters. Also, force fitting has made it possible to train smaller size systems and extrapolate the parameters to make accurate predictions for larger systems. This proposed strategy has definitely made the mapping and fitting of atomic forces easier and can be applied to a wide variety of molecular systems.
Height representation, critical exponents, and ergodicity in the four-state triangular Potts antiferromagnet
Creators: name: Moore, Cristopher
name: Newman, M. E. J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the four-state antiferromagnetic Potts model on the triangular lattice. We show that the model has six types of defects which diffuse and annihilate according to certain conservation laws consistent with their having a vector-valued topological charge. Using the properties of these defects, we deduce a 2+2-dimensional height representation for the model and hence show that the model is equivalent to the three-state Potts antiferromagnet on the Kagome lattice and to bond-coloring models on the triangular and hexagonal lattices. We also calculate critical exponents for the ground state ensemble of the model. We find that the exponents governing the spin-spin correlation function and spin fluctuations violate the Fisher scaling law because of constraints on path length which increase the effective wavelength of the spin operator on the height lattice. We confirm our predictions by extensive Monte Carlo simulations of the model using the Wang-Swendsen-Kotecky cluster algorithm. Although this algorithm is not ergodic on lattices with toroidal boundary conditions, we prove that it is ergodic on lattices with free boundary conditions, or more generally on lattices possessing no non-contractible loops of infinite order. To guard against biases introduced by lack of ergodicity, we therefore perform our simulations on both the torus and the projective plane.
description: 15 pages including 23 figures
Antioxidant and anti-lipase compounds isolated from heartwood of Yakushima native cedar (Cryptomeria japonica)
Creators: name: Nakagawa, Toshinori
name: Ashour, Ahmed
name: Yhiya Amen
name: Ohnuki, Koichiro
name: Fujimoto, Noboru
name: Kuniyoshi Shimizu
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: This article describes the biological activities of heartwood extracts from Yakushima native cedar (Cryptomeria japonica) and identifies their main active compounds. Black heartwood and red heartwood were each divided into two parts from the center (the pith) to outer heartwood (the cambium). The methanol extracts of those parts were screened for antioxidant and anti-lipase activities. The extract from the pith of the red heartwood showed the highest ORAC activity among the samples. Regarding anti-lipase activity, all the extracts showed relatively high activity (the IC50 value were 9.71–37.24 μg mL−1). In addition, four compounds were isolated and identified from the pith of red heartwood by NMR and MS analyses. Agatharesinol (3) and sequirin C (4) were thought to be the main active compounds responsible for the antioxidant and anti-lipase activities.
Lysiosquilloidea Erichthus
Creators: name: Steck, Mireille
name: Winnicki, Elizabeth
name: Kobayashi, Donald R.
name: Whitney, Jonathan L.
name: Ahyong, Shane T.
name: Porter, Megan L.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Stomatopoda

description: Lysiosquilloidea   Lysiosquilloid larvae could be separated from other erichthus-type larvae by the presence of sub-quadrate shaped maxillipeds, a distinguishing trait in adult lysiosquilloid stomatopods as well.Another obvious trait of the lysiosquilloid larvae was the deeper, and bulkier carapace than most other groups. In most subtypes (with the exception of the Rockets), the body of the animal could curl to fit snugly into the carapace, forming a defensive ball (Figure 5E). Only three lysiosquilloid species have been previously documented in the Hawaiian Islands: Lysiosquilla maculata, Acanthosquilla multifasciata (Wood-Mason, 1895), and Heterosquilloides insignis (Kemp, 1911) (Ahyong 2002a). Based on barcoding, we identified six lysiosquilloid OTUs from Hawaiian waters, indicating a higher diversity than previously estimated. It is unlikely the higher diversity is a result of new colonization events, and more likely an absence of adult documentation due to the cryptic and burrowing nature of Lysiosquilloidea species (Caldwell 1988). Because of the difficulty in collecting adult Lysiosquilloidea, there is little barcoding data available for species in this superfamily. Only two OTUs were identified to species: L. maculata and Pullosquilla n. sp. (Fig. 3).
The six molecular OTUs were sequenced from five distinct erichthus-type subtypes and two individual antizoea (not morphologically characterized here). Morphological differences observed among the lysiosquilloid larvae were primarily related to the carapace shape and length in comparison to the abdominal somites, and telson features (Table 4). Adults of this superfamily occur in intertidal to upper slope habitats where they burrow in sand and sandy-mud (Ahyong 2001). Adults may be found in simple sand and mud flats as well as in sandy habitats associated with reefs. Larvae were found similarly across a range of pelagic habitats, occurring both in nearshore shallow plankton tows (0–10 m), and in our deepest reef pelagic trawls (650–973 m). While the lowest number of individual lysiosquilloid larvae were found, the number of morphotypes were the second highest among the superfamilies (second only to the gonodactyloids).
description: Published as part of Steck, Mireille, Winnicki, Elizabeth, Kobayashi, Donald R., Whitney, Jonathan L., Ahyong, Shane T. & Porter, Megan L., 2022, Hawaiian larval stomatopods: molecular and morphological diversity, pp. 235-260 in Zootaxa 5214 (2) on pages 244-246, DOI: 10.11646/zootaxa.5214.2.5, http://zenodo.org/record/7385060
A Search for OH Megamasers at z > 0.1. II. Further Results
Creators: name: Darling, Jeremy
name: Giovanelli, Riccardo
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present current results of an ongoing survey for OH megamasers in luminous infrared galaxies at the Arecibo Observatory. The survey is now two-thirds complete, and has resulted in the discovery of 35 new OH megamasers at z > 0.1, 24 of which are presented in this paper. We discuss the properties of each source in detail, including an exhaustive survey of the literature. We also place upper limits on the OH emission from 107 nondetections and list their IR, radio, and optical properties. The survey detection rate is 1 OH megamaser for every 6 candidates overall, but is a strong function of the far IR luminosity of candidates and may depend on merger stage or on the central engine responsible for the IR luminosity in the merging galaxy pair. We also report the detection of IRAS 12032+1707, a new OH gigamaser.
description: 19 pages with 6 embedded figures and 4 tables. To appear in the Astronomical Journal (March 2001)
Analysis and Numerical Approximation of Stationary Second-Order Mean Field Game Partial Differential Inclusions
Creators: name: Osborne, Yohance A. P.
name: Smears, Iain
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N15, 65N30

description: The formulation of Mean Field Games (MFG) typically requires continuous differentiability of the Hamiltonian in order to determine the advective term in the Kolmogorov--Fokker--Planck equation for the density of players. However, in many cases of practical interest, the underlying optimal control problem may exhibit bang-bang controls, which typically lead to nondifferentiable Hamiltonians. We develop the analysis and numerical analysis of stationary MFG for the general case of convex, Lipschitz, but possibly nondifferentiable Hamiltonians. In particular, we propose a generalization of the MFG system as a Partial Differential Inclusion (PDI) based on interpreting the derivative of the Hamiltonian in terms of subdifferentials of convex functions. We establish existence of a weak solution to the MFG PDI system, and we further prove uniqueness under a similar monotonicity condition to the one considered by Lasry and Lions. We then propose a monotone finite element discretization of the problem, and we prove strong $H^1$-norm convergence of the approximations to the value function and strong $L^q$-norm convergence of the approximations of the density function. We illustrate the performance of the numerical method in numerical experiments featuring nonsmooth solutions.
title: Μεθοδολογική ανάπτυξη δικτύων βιομηχανικής συμβίωσης με άξονα δράσης την Βοιωτία και την περιφέρεια Στερεάς Ελλάδας
titleType: AlternativeTitle
Creators: name: Bimi, Chrysoula G.
Publisher: name: National Technological University of Athens
Year: 2013
Subjects: subject: Βιομηχανική συμβίωση
subject: Οντολογίες
subject: Οικολογία
subject: Συμβιωτικά
subject: Βοιωτία
subject: Industrial symbiosis
subject: Ecology
subject: FOS: Biological sciences
subject: Ontologies
subject: Viotia

description: 51 σ.
description: Στην παρούσα διπλωματική εργασία μελετήθηκε η ανάπτυξη βιομηχανικής συμβίωσης στην περιφέρεια της Στερεάς Ελλάδας και πιο συγκεκριμένα στην περιοχή της Βοιωτίας. Η μελέτη αυτή ασχολήθηκε με την μοντελοποίηση δεδομένων που συλλέχθηκαν με σκοπό αυτά να εισαχθούν σε οντολογίες και να αυτοματοποιηθεί ο τρόπος που προκύπτουν οι πιθανές συνδέσεις των βιομηχανιών της περιοχής. Εκτός από την μοντελοποίηση χρήσιμων δεδομένων μοντελοποιούνται και τεχνολογίες που δίνουν μια άλλη οπτική στην λογική της συμβίωσης. Τέλος μέσα από την μοντελοποίηση των δεδομένων προέκυψαν τα πρώτα αποτελέσματα της βιομηχανικής συμβίωσης τα οποία περιλαμβάνουν και την χρήση τεχνολογιών.
description: In this thesis, we studied the development of industrial symbiosis in the region of Central Greece and more specifically in the area of Viotia. This study deals with the modeling of the data collected in order to be entered in ontologies and automate the way it suggests the possible connections of the industries in the region. Besides modeling the useful data, we model technologies that give a different perspective on the logic of symbiosis. Finally, through modeling of the data revealed the first results of industrial symbiosis which include the use of technologies.
On the Charged Bose Liquid
Creators: name: Shanenko, A. A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A new approach developed by A. Shanenko [Phys. Lett. A 227 (1997) 367] for investigating the spatial boson correlations at low temperatures is considered in the particular case of the Coulomb interaction potential. This approach is based on integro-differential equations for the radial distribution function and can be used beyond the weak coupling regime.
description: 8 pages, REVTEX, no figures, Phys. Lett. A 231 (1997) 414
Trusted Virtual Reality Environment for Training Security Officers
Creators: name: Pantazidis, Anastasios
name: Gazis, Alexandros
name: SOLDATOS, IOANNIS
name: Touloupou, Marios
name: Kapassa, Evgenia
name: Karagiorgou, Sophia
Publisher: name: Zenodo
Year: 2025
Subjects: Virtual Reality
security
law enforcement
blockchain
metaverse
serious game

description: Virtual Reality (VR) applications are increasingly used to support ergonomic and safe training activities, including serious games for security training. Nevertheless, they do not exploit opportunities for trusted and secure management of digital assets, which are typically offered by the blockchain infrastructures of emerging metaverse environments. This paper introduces a novel interactive and realistic VR-based serious game for training law enforcement officers in the analysis and understanding of terroristic activities. The game is driven by pragmatic models of terroristic actions and teaches its users how to predict and anticipate indicators of terroristic attacks. It also provides the means for generating datasets to train AI modules that could help analyzing and predicting potentially terroristic activities. Moreover, the paper provides an outlook for the evolution of the game in metaverse environments, where blockchain infrastructures can be used to boost the cyber-resilience of the game and to safeguard the trustworthiness of the data generation process.
Oriented cobicircular matroids are $GSP$
Creators: name: Guzmán-Pro, Santiago
name: Hochstättler, Winfried
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05B35, 05C15

description: Colourings and flows are well-known dual notions in Graph Theory. In turn, the definition of flows in graphs naturally extends to flows in oriented matroids. So, the colour-flow duality gives a generalization of Hadwiger's conjecture about graph colourings, to a conjecture about coflows of oriented matroids. The first non-trivial case of Hadwiger's conjecture for oriented matroids reads as follows. If $\mathcal{O}$ is an $M(K_4)$-minor free oriented matroid, then $\mathcal{O}$ has a now-where $3$-coflow, i.e., it is $3$-colourable in the sense of Hochstättler-Nešetřil. The class of generalized series parallel ($GSP$) oriented matroids is a class of $3$-colourable oriented matroids with no $M(K_4)$-minor. So far, the only technique towards proving that all orientations of a class $\mathcal{C}$ of $M(K_4)$-minor free matroids are $GSP$ (and thus $3$-colourable), has been to show that every matroid in $\mathcal{C}$ has a positive coline. Towards proving Hadwiger's conjecture for the class of gammoids, Goddyn, Hochstättler, and Neudauer conjectured that every gammoid has a positive coline. In this work we disprove this conjecture by exhibiting an infinite class of strict gammoids that do not have positive colines. We conclude by proposing a simpler technique for showing that certain oriented matroids are $GSP$. In particular, we recover that oriented lattice path matroids are $GSP$, and we show that oriented cobicircular matroids are $GSP$.
description: This work is an extension of our previous pre-print: arXiv:2203.12549
Comparison of FRAX Score for Osteoporotic Fracture between Type 2 Diabetes and Non-Diabetes Patients with Previous Osteoporotic Hip Fracture
Creators: name: Pornertai Rattanamaytanon
name: Prasit Leewattanapat
Publisher: name: Text and Journal Publication
Year: 2021
Subjects: FRAX
osteoporosis fracture
hip fracture
type 2 diabetes mellitus

description: Vajira Medical Journal, 65, 3, 221-234