cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
UPL-SFDA: Uncertainty-aware Pseudo Label Guided Source-Free Domain Adaptation for Medical Image Segmentation
Creators: name: Wu, Jianghao
name: Wang, Guotai
name: Gu, Ran
name: Lu, Tao
name: Chen, Yinan
name: Zhu, Wentao
name: Vercauteren, Tom
name: Ourselin, Sébastien
name: Zhang, Shaoting
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Domain Adaptation (DA) is important for deep learning-based medical image segmentation models to deal with testing images from a new target domain. As the source-domain data are usually unavailable when a trained model is deployed at a new center, Source-Free Domain Adaptation (SFDA) is appealing for data and annotation-efficient adaptation to the target domain. However, existing SFDA methods have a limited performance due to lack of sufficient supervision with source-domain images unavailable and target-domain images unlabeled. We propose a novel Uncertainty-aware Pseudo Label guided (UPL) SFDA method for medical image segmentation. Specifically, we propose Target Domain Growing (TDG) to enhance the diversity of predictions in the target domain by duplicating the pre-trained model's prediction head multiple times with perturbations. The different predictions in these duplicated heads are used to obtain pseudo labels for unlabeled target-domain images and their uncertainty to identify reliable pseudo labels. We also propose a Twice Forward pass Supervision (TFS) strategy that uses reliable pseudo labels obtained in one forward pass to supervise predictions in the next forward pass. The adaptation is further regularized by a mean prediction-based entropy minimization term that encourages confident and consistent results in different prediction heads. UPL-SFDA was validated with a multi-site heart MRI segmentation dataset, a cross-modality fetal brain segmentation dataset, and a 3D fetal tissue segmentation dataset. It improved the average Dice by 5.54, 5.01 and 6.89 percentage points for the three tasks compared with the baseline, respectively, and outperformed several state-of-the-art SFDA methods.
description: 12 pages, 6 figures, to be published on IEEE TMI
Petra Kieselbach/Claus-Joachim Kind/Ann M. Miller/Daniel Richter, Siebenlinden 2
Creators: name: Larsson, Lars
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Petra Kieselbach/Claus-Joachim Kind/Ann M. Miller/Daniel Richter, Siebenlinden
2. Ein mesolithischer Lagerplatz bei Rottenburg am Neckar, Kreis Tübingen. Mit
einem Beitrag von Manfred Rösch und Arnd Goppelsröder. Materialhefte zur Archäologie
in Baden-Württemberg, Heft 51. Konrad Theiss Verlag, Stuttgart 2000. ISBN
3-8062-1432-8. 235 Seiten mit 124 Abbildungen und 95 Tabellen.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 81 Nr. 1 (2003)
Sonnenfleckenzeichnung Nr. 31.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.02.2002, 11:45, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
High spatial entanglement via chirped quasi-phase-matched optical parametric down-conversion
Creators: name: Svozilík, Jiří
name: Peřina, Jan
name: Torres, Juan P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By making use of the spatial shape of paired photons, parametric down-conversion allows the generation of two-photon entanglement in a multidimensional Hilbert space. How much entanglement can be generated in this way? In principle, the infinite-dimensional nature of the spatial degree of freedom renders unbounded the amount of entanglement available. However, in practice, the specific configuration used, namely its geometry, the length of the nonlinear crystal and the size of the pump beam, can severely limit the value that could be achieved. Here we show that the use of quasi-phase-matching engineering allows to increase the amount of entanglement generated, reaching values of tens of ebits of entropy of entanglement under different conditions. Our work thus opens a way to fulfill the promise of generating massive spatial entanglement under a diverse variety of circumstances, some more favorable for its experimental implementation.
description: 5 pages, 4 figures
Microwave and radio emission of dusty star-forming galaxies: Implication for the cosmic radio background
Creators: name: Ysard, Nathalie
name: Lagache, Guilaine
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use the most up-to-date cosmological evolution models of star-forming (SF) galaxies and radio sources to compute the extragalactic number counts and the cosmic background from 408MHz to 12THz. The model of SF galaxies reproduces the constraints obtained by Spitzer, Herschel, and ground-based submm/mm experiments: number counts, redshift distribution of galaxies, cosmic background intensity and anisotropies. The template SEDs of this model are extrapolated to the radio adding synchrotron, free-free, and spinning dust emissions. To fix the synchrotron intensity, we use the IR/radio flux ratio, q70, and a spectral index beta=-3. For a constant q70, our model added to the AGN contribution provides a good fit to the number counts from 12THz to 408MHz and to the CIB. Spinning dust accounts for up to 20% of the cosmic microwave background produced by SF galaxies, but for less than 10% of the total background when AGN are included. The SF galaxies account for 77.5% of the number counts at 1.4GHz for a flux of 1e-4Jy. However, the model does not explain the CRB measured with the ARCADE2 experiment. Considering the case when q70 decreases strongly with redshift, this still does not explain the ARCADE2 results. It also yields to an overestimate of the low-flux number counts in the radio. Thus, we rule out a steep variation of q70 with redshift at least for z<3.5. Adding a population of faint SF galaxies at high redshift (Lir<1e11Lsun and 4
description: accepted for publication by A&A, modification of one citation
Gapped energy spectra around the Dirac node at the surface of a 3D topological insulator in the presence of the time-reversal symmetry
Creators: name: Habe, Tetsuro
name: Asano, Yasuhiro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss the excitation spectra around the Dirac node on a surface of a three-dimensional topological insulator. By using the diagrammatic expansion, we show that the coupling of an electron with the gauge field in the presence of impurity scatterings opens a gap around the Dirac node. The results are consistent with a recent experimental finding by T. Sato,et. al.[ Nature Phys. \textbf{7}, 840 (2011)]. We also discuss the consistency between the present results and the bulk-boundary correspondence of the topological insulator in the presence of time reversal symmetry. The conclusion can be applied any two dimensional massless fermions.
description: 6 pages, 2 figures
Integrable systems on symmetric spaces from a quadratic pencil of Lax operators
Creators: name: Ivanov, Rossen I.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q51 (Primary) 35Q55, 37K10 (Secondary)

description: The article surveys the recent results on integrable systems arising from quadratic pencil of Lax operator L, with values in a Hermitian symmetric space. The counterpart operator M in the Lax pair defines positive, negative and rational flows. The results are illustrated with examples from the A.III symmetric space. The modeling aspect of the arising higher order nonlinear Schrödinger equations is briefly discussed.
description: 8 pages, Dedicated to Professor Vladimir Gerdjikov on the occasion of his 75th birthday. arXiv admin note: text overlap with arXiv:2301.07225
title:  Un esempio di identità italiana. Il magistero d’attore di Gian Maria Volonté
Creators: name: Pellanda  , Marina
Publisher: name: RomaTrE-Press
Year: 2019

description: Gian Maria Volonté, capacità mimetiche non comuni e straordinaria forza espressiva, recita le Maschere del potere e dell'impotenza, della violenza e della rassegnazione, dell'impegno civile e della passione ed è un buon esempio di Soggetto Italiano. Modellando una faccia e un corpo cui basta pochissimo per volgersi dalla caricatura alla commedia, all'impenetrabilità dell'intellettuale spaventato o dell'antagonista diabolico, e esibendo una Libertà Estetica che, lontana dall'anarchia, nei limiti generali imposti dalle singole arti e in quelli particolari imposti a se stesso dall'artista, è scelta dell'espressione che meglio risponde al suo sentire, diventa l'occasione per chi guarda alle sue interpretazioni, di ritrovare un'Identità Italiana di cui, forse, si è perso lo stampo.
description: Cinema e identità italiana
Neue Nutzung im Bischofsschloss
Creators: name: Goerlich, Martina
Publisher: name: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege
Year: 2019

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 48 Nr. 1 (2019)
Observing gravitational redshift with X-Ray emission in galaxy clusters with Athena X-IFU
Creators: name: Molin, Alexeï
name: Clerc, Nicolas
name: Pointecouteau, Étienne
name: Pajot, François
name: Cuchetti, Edoardo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Context. The Doppler shift predicted by general relativity for light escaping a gravitational potential has been observed on Earth as well as in the direction of various stars and galaxy clusters at optical wavelengths. Aims. Observing the gravitational redshift in the X-ray band within galaxy clusters could provide information on their properties and, in particular, their gravitational potential. We present a feasibility study of such a measurement, using the capabilities of the next-generation European X-ray observatory Athena. Methods. We used a simple generalized Navarro-Frenk-White potential model along with a beta-model for the density of baryonic matter, which sets the emission to provide an estimation of the observed redshift in the simplest of cases. We generated mock observations with the Athena X-ray Integral Field Unit (X-IFU) for a nearby massive cluster, while seeking to recover the gravitational redshift along with other properties of the toy model cluster. Results. We investigated the observability of the gravitational redshift in an idealized test case of a nearby massive cluster with the Athena X-IFU instrument, as well as its use in probing the properties of the potential well. We were also able to constrain the mass to a 20 % level of precision and the cosmological redshift to less than 1%, within a simplified and idealized observational framework. More refined simulations accounting for further effects such as the internal gas motions and the actual shape of the potential well are required to fully investigate the feasibility of measuring the gravitational redshift for a single target or statistically over a sample of galaxy clusters.
description: 11 pages, 10 figures
Separability of Black Holes in String Theory
Creators: name: Larsen, Finn
name: Keeler, Cynthia
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyze the origin of separability for rotating black holes in string theory, considering both massless and massive geodesic equations as well as the corresponding wave equations. We construct a conformal Killing-Stackel tensor for a general class of black holes with four independent charges, then identify two-charge configurations where enhancement to an exact Killing-Stackel tensor is possible. We show that further enhancement to a conserved Killing-Yano tensor is possible only for the special case of Kerr-Newman black holes. We construct natural null congruences for all these black holes and use the results to show that only the Kerr-Newman black holes are algebraically special in the sense of Petrov. Modifying the asymptotic behavior by the subtraction procedure that induces an exact SL(2)^2 also preserves only the conformal Killing-Stackel tensor. Similarly, we find that a rotating Kaluza-Klein black hole possesses a conformal Killing-Stackel tensor but has no further enhancements.
description: 27 pages
Filip, Jan (unter Mitwirkung zahlreicher Wissenschaftler und Institute): Enzyklopädisches Handbuch zur Ur- und Frühgeschichte Europas. Bd. 1 (a-k), Bd. 2 (l-z)
Creators: name: Driehaus, Jürgen
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Rezension zu: Filip, Jan (unter Mitwirkung zahlreicher Wissenschaftler und Institute): Enzyklopädisches Handbuch zur Ur- und Frühgeschichte Europas. Bd. 1 (a-k), Bd. 2 (l-z). (Academia. Verlag der tschechoslowakischen Akademie der Wissenschaften.) Bd. 1 Prag 1966, Bd. 2 1969. 1756 S., 92 Taf., zahlreiche Textabb
description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 40 (1971): Nachrichten aus Niedersachsens Urgeschichte
Sonnenfleckenzeichnung Nr. 126.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.06.2002, 07:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Ausgrabungsberichte des Provinzialmuseums in Bonn
Creators: name: Lehner, Hans
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Bonner Jahrbücher, Bd. 122 (1912): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
Cryptanalysis of a Public-key Cryptosystem Using Lattice Basis Reduction Algorithm
Creators: name: Rastaghi, Roohallah
name: Oskouei, Hamid R. Dalili
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cryptography and Security (cs.CR)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: We proposed a new attack against Hwang et al.'s cryptosystem. This cryptosystem uses a super-increasing sequence as private key and the authors investigate a new algorithm called permutation combination algorithm to enhance density of knapsack to avoid the low-density attack. Sattar J. Aboud [Aboud j. Sattar, "An improved knapsack public key cryptography system", International Journal of Internet Technology and Secured Transactions, Vol.3 (3), pp.310-319, 2011] used Shamir's attack on the basic Merkle-Hellman cryptosystem to break this cryptosystem. In this paper, we introduce a direct attack against Hwang et al.'s cryptosystem based on Lattice basis reduction algorithms. By computing complexity of propose attack, we show that unlike Aboud's cryptanalysis, our cryptanalysis is more efficient and practicable.
Sonnenfleckenzeichnung Nr. 217.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.09.2002, 11:15, erstellt von Michele Bianda
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Exploring the Interplay of Risk Attitude and Organic Food Consumption
Creators: name: Giampietri, Elisa
name: Bugin, Giuseppe
name: Trestini, Samuele
Publisher: name: International Journal on Food System Dynamics
Year: 2020
Subjects: organic food consumption; risk attitude; lottery; healthy diet; consumer preference

description: This exploratory study seeks to advance the research on consumers’ preference for organic food eating by investigating the potential association between organic food consumption (OC) frequency and the individual risk attitude. Moreover, inspired by the literature, we investigate also the association between OC and the perceived OC related health improvement (i.e. the avoidance of health risks), subjective trust toward the certification, social norms and several lifestyle factors. Based on a direct survey of 223 Italian college students, a lottery task was used to characterize the individual risk attitude and a simultaneous equation model was estimated. This study marks a beginning by showing a significant relationship between being risk averse and a high organic food eating, offering a hint for future research avenues in the organic domain.
description: International Journal on Food System Dynamics, Vol 11, No 3 (2020)
Calista Fischer, Innovation und Tradition in der Mittel- und Spätbronzezeit. Gräber und Siedlungen in Neftenbach, Fällanden, Dietikon, Pfäffikon und Erlenbach
Creators: name: Joachim, Hans-Eckart
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Calista Fischer, Innovation und Tradition in der Mittel- und Spätbronzezeit. Gräber und Siedlungen in Neftenbach, Fällanden, Dietikon, Pfäffikon und Erlenbach. Monographien der Kantonsarchäologie Zürich, Band 28. Zürich und Egg 1997. 295 Seiten, 119 Abbildungen, 76 Tafeln, 57 Tabellen
description: Bonner Jahrbücher, Bd. 199.1999(2002): Bonner Jahrbücher
The Swift X-ray Telescope Cluster Survey: data reduction and cluster catalog for the GRB fields
Creators: name: Tundo, Elena
name: Moretti, Alberto
name: Tozzi, Paolo
name: Teng, Liu
name: Rosati, Piero
name: Tagliaferri, Gianpiero
name: Campana, Sergio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (abridged) We present a new sample of X-ray selected galaxy groups and clusters serendipitously observed with Swift and the X-ray Telescope (XRT). We searched the XRT archive for extended sources among 336 GRB fields with galactic latitude |b|>20°. Our selection algorithm yields a flux-limited sample of 72 X-ray groups and clusters with a well defined selection function and negligible contamination. The sky coverage of the survey goes from the total 40 deg^2 to 1 deg^2 at a flux limit of 10^-14 erg/s/cm^-2 (0.5-2 keV). Here we describe the XRT data processing, the statistical calibration of the survey, and the catalog of detected cluster candidates. All the X-ray sources are detected in the Swift-XRT soft (0.5-2 keV) band. A size parameter defined as the half power radius (HPR) measured inside a box of 45x45 arcsec, is assigned to each source. We select extended sources by applying a threshold on the Half Power Radius and we calibrate its dependence on the measured net counts and on the image background with extensive simulations in order to identify all the sources with ~99% probability of being extended. We compute the logN-logS of our sample, finding very good agreement with previous deep cluster surveys. A cross correlation with published X-ray catalogs shows that only 9 sources were already detected, none of them as extended. Therefore, ~90% of our sources are new X-ray detections. We also cross correlated our sources with optical catalogs, finding 20 previously identified clusters. Overall, about ~65% of our sources are new detections. The XRT follow-up observation of GRBs is providing an excellent serendipitous survey for groups and clusters of galaxies, mainly thanks to the low background of XRT and its constant angular resolution across the field of view. About 33% of the sample has spectroscopic or photometric redshifts from public optical surveys.
description: 17 pages, 16 figures, A&A published. Minor typos corrected
Preferences for Certified Beef with Animal Welfare and Other Credence Attributes in Australia
Creators: name: Morales, L. Emilio
name: Griffith, Garry
name: Fleming, Euan
name: Mounter, Stuart
name: Wright, Victor
name: Umberger, Wendy
Publisher: name: International Journal on Food System Dynamics
Year: 2020
Subjects: consumer preferences; animal welfare; propensity to buy; logistic regression

description: Concerns over livestock production practices have resulted in increased consumer preferences for certified products. Australian beef buyers’ survey data revealed the preferences of consumers who would buy differentiated beef based on animal welfare, safety, health, or environmental-friendly considerations. Female respondents are more likely to buy certified animal welfare products. Buyers with children, and those who value branded beef, are more likely to buy products differentiated by a bundle of credence attributes. Given that Australian beef consumers eat similar amounts, there are opportunities for differentiating beef products according to credence attributes and offering them in a range of retailers.
description: International Journal on Food System Dynamics, Vol 11, No 3 (2020)
Cosmological implications of the constant jerk parameter in $f(Q,T)$ gravity theory
Creators: name: Myrzakulov, N.
name: Koussour, M.
name: Alfedeel, Alnadhief H. A.
name: Elkhair, H. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This study delves into modified gravity theories that are equivalent to General Relativity but involve the torsion or non-metricity scalar instead of the curvature scalar. Specifically, we focus on $f(Q,T)$ gravity, which entails an arbitrary function of the non-metricity scalar $Q$ non-minimally coupled to the trace of the stress-energy tensor $T$. We investigate the functional form $f(Q,T)=f(Q)+f(T)$, where $f(Q) =Q+α\,Q^2$ represents the Starobinsky model in $f(Q)$ gravity and $f(T)=2\,γ\,T$, with $α$ and $γ$ are constants. To obtain solutions for the Friedmann equations, we introduce the concept of a constant jerk and employ its definition to trace the evolution of other kinematic variables, including the deceleration parameter, energy density, EoS parameter, and various energy conditions. These analyses serve to validate the proposed model. We constrain our constant jerk model using the most available Pantheon set of data, the Hubble set of data, and the BAO set of data. Further, we employ $Om(z)$ diagnostic as a means to differentiate between different theories of dark energy. Throughout our examination, all cosmological parameters under scrutiny consistently indicate an accelerating Universe.
description: Chinese Journal of Physics accepted version
Exploring Plant Phenology using Herbarium Specimens: Lab or Workshop
Creators: name: Pearson, Katie
name: Parada, Tadeo
name: Mazer, Susan
name: Love, Natalie
name: Yost, Jenn
Publisher: name: QUBES Educational Resources
Year: 2021

description: In this workshop or lab exercise, participants will examine the effects of climate on the phenological events of a selected species using herbarium specimen data.
Veröffentlichungen / Publications
Creators: name: Redaktion, Die
Publisher: name: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel
Year: 2019

description: -
description: Deutsches Forum für Kunstgeschichte (DFK Paris): Jahresbericht / Rapport annuel, Jahresbericht / Rapport annuel 2017/2018
The Cosmic Ray Intensity Near the Archean Earth
Creators: name: Cohen, O.
name: Drake, J. J.
name: Kota, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We employ three-dimensional state of the art magnetohydrodynamic models of the early solar wind and heliosphere and a two-dimensional model for cosmic ray transport to investigate the cosmic ray spectrum and flux near the Archean Earth. We assess how sensitive the cosmic ray spectrum is to changes in the sunspot placement and magnetic field strength, the large scale dipole magnetic field strength, the wind ram pressure, and the Sun's rotation period. Overall, our results confirm earlier work that suggested the Archean Earth would have experienced a greatly reduced cosmic ray flux than is the case today. The cosmic ray reduction for the early Sun is mainly due to the shorter solar rotation period and tighter winding of the Parker spiral, and to the different surface distribution of the more active solar magnetic field. These effects lead to a global reduction of the cosmic ray flux at 1AU by up to two orders of magnitude or more. Variations in the sunspot magnetic field have more effect on the flux than variations in the dipole field component. The wind ram pressure affects the cosmic ray flux through its influence on the size of the heliosphere via the pressure balance with the ambient interstellar medium. Variations in the interstellar medium pressure experienced by the solar system in orbit through Galaxy could lead to order of magnitude changes in the cosmic ray flux at Earth on timescales of a few million years.
description: 7 pages, 4 figures,accepted to ApJ
Additional file 5 of Genetic alteration of Chinese patients with rectal mucosal melanoma
Creators: name: Li, Huan
name: Yang, Lujing
name: Lai, Yumei
name: Wang, Xintong
name: Han, Xinyin
name: Liu, Siyao
name: Wang, Dongliang
name: Li, Xiaojuan
name: Hu, Nana
name: Kong, Yan
name: Si, Lu
name: Li, Zhongwu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 5: Figure S2. The overview of identifying OS-related factors in 36 RMM patients. RMM patients were analyzed through the TSO500 pipeline and 388 mutations were identified. Univariate and multivariate regression analysis were performed to identify prognostic factors.
Mechanisms of temperature-dependent thermal transport in amorphous silica from machine-learning molecular dynamics
Creators: name: Liang, Ting
name: Ying, Penghua
name: Xu, Ke
name: Ye, Zhenqiang
name: Ling, Chao
name: Fan, Zheyong
name: Xu, Jianbin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic Physics (physics.atom-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Amorphous silica (a-SiO$_2$) is a foundational disordered material for which the thermal transport properties are important for various applications. To accurately model the interatomic interactions in classical molecular dynamics (MD) simulations of thermal transport in a-SiO$_2$, we herein develop an accurate yet highly efficient machine-learned potential model that allowed us to generate a-SiO$_2$ samples closely resembling experimentally produced ones. Using the homogeneous nonequilibrium MD method and a proper quantum-statistical correction to the classical MD results, quantitative agreement with experiments is achieved for the thermal conductivities of bulk and 190 nm-thick a-SiO$_2$ films over a wide range of temperatures. To interrogate the thermal vibrations at different temperatures, we calculated the current correlation functions corresponding to the transverse acoustic (TA) and longitudinal acoustic (LA) collective vibrations. The results reveal that below the Ioffe-Regel crossover frequency, phonons as well-defined excitations, remain applicable in a-SiO$_2$ and play a predominant role at low temperatures, resulting in a temperature-dependent increase in thermal conductivity. In the high-temperature region, more phonons are excited, accompanied by a more intense liquid-like diffusion event. We attribute the temperature-independent thermal conductivity in the high-temperature range of a-SiO$_2$ to the collaborative involvement of excited phonon scattering and liquid-like diffusion in heat conduction. These findings provide physical insights into the thermal transport of a-SiO$_2$ and are expected to be applied to a vast range of amorphous materials.
description: 12 pages, 7 figures in main text; 15 pages, 12 figures in Supplemental Material
Sonnenfleckenzeichnung Nr. 42.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.02.2002, 09:45, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Cyg X-3: a low-mass black hole or a neutron star
Creators: name: Zdziarski, Andrzej A.
name: Mikolajewska, Joanna
name: Belczynski, Krzysztof
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Cyg X-3 is a highly interesting accreting X-ray binary, emitting from the radio to high-energy gamma-rays. It consists of a compact object wind-fed by a Wolf-Rayet (WR) star, but the masses of the components and the mass-loss rate have been a subject of controversies. Here, we determine its masses, inclination, and the mass-loss rate using our derived relationship between the mass-loss rate and the mass for WR stars of the WN type, published infrared and X-ray data, and a relation between the mass-loss rate and the binary period derivative (observed to be >0 in Cyg X-3). Our obtained mass-loss rate is almost identical to that from two independent estimates and consistent with other ones, which strongly supports the validity of this solution. The found WR and compact object masses are 10.3_{-2.8}^{+3.9}, 2.4_{-1.1}^{+2.1} solar masses, respectively. Thus, our solution still allows for the presence of either a neutron star or a black hole, but the latter only with a low mass. However, the radio, infrared and X-ray properties of the system suggest that the compact object is a black hole. Such a low-mass black-hole could be formed via accretion-induced collapse or directly from a supernova.
description: MNRAS Letters, in press, 5 pages
An analytic framework for identifying finite-time coherent sets in time-dependent dynamical systems
Creators: name: Froyland, Gary
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37A30

description: The study of transport and mixing processes in dynamical systems is particularly important for the analysis of mathematical models of physical systems. Barriers to transport, which mitigate mixing, are currently the subject of intense study. In the autonomous setting, the use of transfer operators (Perron-Frobenius operators) to identify invariant and almost-invariant sets has been particularly successful. In the nonautonomous (time-dependent) setting, \emph{coherent sets}, a time-parameterised family of minimally dispersive sets, are a natural extension of almost-invariant sets. The present work introduces a new analytic transfer operator construction that enables the calculation of \emph{finite-time} coherent sets (sets are that minimally dispersive over a finite time interval). This new construction also elucidates the role of diffusion in the calculation and we show how properties such as the spectral gap and the regularity of singular vectors scale with noise amplitude. The construction can also be applied to general Markov processes on continuous state space.
Differences in Production Costs Across Compliance Scenarios for Canadian Cow-Calf Producers Accessing the EU Market
Creators: name: Gabruch, Mandy
name: Micheels, Eric T.
Publisher: name: International Journal on Food System Dynamics
Year: 2020
Subjects: Beef production; trade agreements; compliance; growth enhancing products; systems dynamics

description: Using the 2016 Canada EU Trade Agreement as context, we develop a systems dynamics model to assess changes in the cost of production from a production system oriented toward the North American market where growth enhancing products are allowed, to a European market where these production practices are banned. We outline four different compliance scenarios and use data from western Canadian institutions to estimate how the cost of production for cow-calf producers changes in the different compliance scenarios. We find that compliance costs ranged from $2.13 per head for those firms who already had forgone growth enhancing products and were maintaining detailed records to $34.78 per head for farms who were least compliant with EU standards.
description: International Journal on Food System Dynamics, Vol 11, No 3 (2020)
Sonnenfleckenzeichnung Nr. 149.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.06.2002, 09:00, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
What Drives Farmers’ Decisions to Invest? The Role of Research Engagement, Information Collection and Type of Farm
Creators: name: Niavis, Spyros
name: Kyrgiakos, Leonidas-Sotirios
name: Kleisiari, Christina
name: Vlontzos, George
Publisher: name: International Journal on Food System Dynamics
Year: 2020
Subjects: Investment; decision-making; arable; tree; farmers; ordinal regression

description: The present paper develops a framework for modeling and explaining the decisions of farmers for realizing investments aimed at improving the operation of their holdings. The empirical analysis is conducted in Greece on 777 farmers of arable and orchard crops. The results prioritize the significance of farmers’ research engagement and information collection and show that there is a systematic difference between the realized investments between arable crops and orchard farmers, as the latter seem to invest more in their holdings. Finally, the paper ends up with a clustering exercise, in order to distinguish three groups of farmers which could be used as a means for shaping more tailored policy initiatives.
description: International Journal on Food System Dynamics, Vol 11, No 3 (2020)
Sonnenfleckenzeichnung Nr. 179.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 31.07.2002, 07:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Multiple Tactics to Improve our Understanding of Soybean Diseases
Creators: name: Brown, Mariama Tricuonia
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Sustainable agricultural development

description: Sudden death syndrome (SDS) caused by Fusarium virguliforme is one of the top yield-reducing diseases of soybean. This disease results in a two-stage symptom development, root rot followed by foliar interveinal chlorosis and necrosis. Foliar symptoms typically appear late in the growing season [full pod to full seed (R4 to R6) reproductive growth stages]. Prior to foliar symptoms, a destructive technique is usually carried out to identify the root rot phase of SDS. This technique requires intensive crop scouting and an expert for accurate diagnosis. Therefore, a nondestructive technique is needed to diagnose SDS disease in the absence of visible foliar symptoms. Additionally, no soybean cultivar is completely resistant to SDS and no single method can completely manage this disease. So, an improved integrated approach is needed for SDS disease management. Foliar fungal diseases such as frogeye leaf spot (Cercospora sojina Hara), Septoria brown spot (Septoria glycines Hemmi), and Cercospora leaf blight (Cercospora spp.) are also economically important diseases of soybean. To limit the losses caused by these diseases, several management methods can be used including the application of foliar fungicide. However, due to the low foliar disease pressure that is observed most years, fungicide applications may not be warranted to be applied annually in Indiana. The objectives of this research were: 1) to assess the effectiveness and economic impact of integrated management strategies that include cultivar selection, seed treatment, and seeding rate on SDS in Indiana; 2) to pre-symptomatically and non-destructively detect SDS disease using hyperspectral measurements; and 3) to evaluate foliar fungicides on soybean foliar diseases and yield in Indiana. Results from this research support the use of a seed treatment to protect soybean roots from SDS infection and the use of a moderately resistant cultivar planted at a seeding rate of 346,535 seeds/ha to protect yield and maximize on net returns. This research also demonstrated the ability of hyperspectral reflectance to discriminate healthy from F. virguliforme infected soybean roots in the absence of foliar symptoms. In addition, results show that fungicide applications can reduce foliar disease over the nontreated control, but under low foliar disease risk, these fungicides did not significantly increase yield over the nontreated control. Altogether, these results will contribute to improved soybean disease management approaches in Indiana.
Sonnenfleckenzeichnung Nr. 30.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.02.2002, 08:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Multiple-beam Propagation in an Anderson Localized Optical Fiber
Creators: name: Karbasi, Salman
name: Koch, Karl W.
name: Mafi, Arash
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the simultaneous propagation of multiple beams in a disordered Anderson localized optical fiber. The profiles of each beam fall off exponentially, enabling multiple channels at high-density. We examine the influence of fiber bends on the movement of the beam positions, which we refer to as drift. We investigate the extent of the drift of localized beams induced by macro-bending and show that it is possible to design Anderson localized optical fibers that can be used for practical beam-multiplexing applications.
Sonnenfleckenzeichnung Nr. 229.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 26.09.2002, 07:15, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 276.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 01.12.2002, 11:15, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Determining Factors that Affect Farming in the Albanian Milk Sector
Creators: name: Sokoli, Olta
name: Kapaj, Illir
name: Doluschitz, Reiner
Publisher: name: International Journal on Food System Dynamics
Year: 2020
Subjects: innovation; farmers characteristics; Albania; milk dairy sector

description: In Albania, the agricultural sector is dominated to almost 60% by subsistence farming. Nevertheless, agriculture is one of the most important sectors of the economy, as it contributes to nearly 1/2 of employment in Albania and 1/5 to the GDP (ILO - International Labour Organisation, 2018). The government has applied different policies and instruments in collaboration with foreign associations (GIZ, FAO) to improve and further develop this sector by inviting farmers in new initiatives. Being part of an innovative organisation or being an innovative actor in terms of the role you play and functions you carry out in the value chain, are still considered as impasse by the majority of farmers in Albania. As a result, innovation and risk-taking are two factors that are contrary but strongly related to each other when it comes to the behaviour of Albanian farmers.
description: International Journal on Food System Dynamics, Vol 11, No 3 (2020)
Effects of Climate Change on the Long-run Crops’ Yields in Nigeria
Creators: name: Olakojo, Solomon Abayomi
name: Onanuga, Olaronke Toyin
Publisher: name: International Journal on Food System Dynamics
Year: 2020
Subjects: Nigeria; Climate change; Long-run crop yields; Short-run crop yields; Rainfall; Temperature

description: The study investigated the impact of climate change on yields of leading food crops in Nigeria and assessed the transmission channels of climate shocks to welfare. Long-run causality test, Markov-switching regression and Structural Vector Autoregressive (SVAR) model were used. Long-run causality between climate change and crop yields was not rejected. A rise in temperature by 1% reduces crop yields by -0.12% in the regime of high yield while 1% increase in rainfall increases yields by 0.21% and 0.26%, respectively in high and low yield period. Shocks to welfare is traceable to climate change via crop yields and food prices effect.
description: International Journal on Food System Dynamics, Vol 11, No 3 (2020)
Sonnenfleckenzeichnung Nr. 64.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.03.2002, 11:00, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2002

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)