cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inhalt des 73/74. Jahrgangs
Creators: name: Redaktion, Die
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 73/74 (2010/2011): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Transient dynamics of the phase transition in VO2 revealed by mega electron-volt ultrafast electron diffraction
Creators: name: Xu, Chenhang
name: Jin, Cheng
name: Chen, Zijing
name: Lu, Qi
name: Cheng, Yun
name: Zhang, Bo
name: Qi, Fengfeng
name: Chen, Jiajun
name: Yin, Xunqing
name: Wang, Guohua
name: Xiang, Dao
name: Qian, Dong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Vanadium dioxide (VO2) exhibits an insulator-to-metal transition accompanied by a structural transition near room temperature. This transition can be triggered by an ultrafast laser pulse. Exotic transient states, such as a metallic state without structural transition, were also proposed. These unique characteristics let VO2 have great potential in thermal switchable devices and photonic applications. Although great efforts have been made, the atomic pathway during the photoinduced phase transition is still not clear. Here, we synthesized freestanding quasi-single-crystal VO2 films and examined their photoinduced structural phase transition with mega-electron-volt ultrafast electron diffraction. Leveraging the high signal-to-noise ratio and high temporal resolution, we observe that the disappearance of vanadium dimers and zigzag chains does not coincide with the transformation of crystal symmetry. After photoexcitation, the initial structure is strongly modified within 200 femtoseconds, resulting in a transient monoclinic structure without vanadium dimers and zigzag chains. Then, it continues to evolve to the final tetragonal structure in approximately 5 picoseconds. In addition, only one laser fluence threshold instead of two thresholds suggested in polycrystalline samples was observed in our quasi-single-crystal samples. Our findings provide new essential information for a comprehensive understanding of the photoinduced ultrafast phase transition in VO2.
Short-Term Variability of PKS1510-089
Creators: name: Kadota, Akiko
name: Fujisawa, Kenta
name: Sawada-Satoh, Satoko
name: Wajima, Kiyoaki
name: Doi, Akihiro
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We searched a short-term radio variability in an active galactic nucleus PKS 1510-089. A daily flux monitoring for 143 days at 8.4 GHz was performed, and VLBI observations at 8.4, 22, and 43 GHz were carried out 4 times during the flux monitoring period. As a result, variability with time scale of 20 to 30 days was detected. The variation patterns were well alike on three frequencies, moreover those at 22 and 43 GHz were synchronized. These properties support that this short-term variability is an intrinsic one. The Doppler factor estimated from the variability time scale is 47. Since the Doppler factor is not extraordinary large for AGN, such intrinsic variability with time scale less than 30 days would exist in other AGNs.
description: 14 pages, 4 figures
No evidence for EDE from Planck data in extended scenarios
Creators: name: Fondi, Emanuele
name: Melchiorri, Alessandro
name: Pagano, Luca
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The latest data release from the ACT CMB experiment (in combination with previous WMAP data) shows evidence for an Early Dark Energy component at more than $3$ standard deviations. The same conclusion has been recently shown to hold when temperature data from the Planck experiment limited to intermediate angular scales ($l \le 650$) are included while it vanishes when the full Planck dataset is considered. However, it has been shown that the full Planck dataset exhibits an anomalous lensing component and a preference for a closed universe at the level of three standard deviation. It is therefore of utmost importance to investigate if these anomalies could anti-correlate with an early dark energy component and hide its presence during the process of parameter extraction. Here we demonstrate that extended parameters choices as curvature, equation of state of dark energy and lensing amplitude $A_L$ have no impact on the Planck constraints on EDE. In practice, EDE does not solve Planck angular spectra anomalies. This indicates that current CMB evidence for an EDE component comes essentially from the ACT-DR4 dataset.
description: 6 pages, 3 Figures
Vanishing Indian, vanishing military: military training and aboriginal lands in twentieth century Canada
Creators: name: Lackenbauer, P. Whitney
Publisher: name: University of Calgary
Year: 2003

description: Bibliography: p. 465-491.
description: In recent years, the closure or reduction of Canadian Forces facilities, the continued use of airspace for weapons testing and low-level flying, increased environmental awareness, and Aboriginal land claims have contributed to a growing interest in the acquisition, use and development of Aboriginal lands for military training. This dissertation explores how the military's interest in Aboriginal lands and concomitant relationships evolved through the twentieth century, using a comparative case study approach that includes various Aboriginal groups, geographic regions, and time periods. Drawing upon untapped archival sources, interviews, primary reports, and secondary literature, the case studies critically examine the land selection and acquisition process, expressions of communal and individual agency, and a myriad of political, socio-economic and environmental legacies stemming from military use. The final section explores the emergence of Native land claims in historical context and the consequent effects on relationships and memory. The results challenge prevailing depictions of the various participants, providing an important commentary on war and society in Canada that yields insight into conflict and cooperation in changing national and local historical contexts. Chapters one to five introduce relationships between the militia, the Department of Indian Affairs, and Indian bands from the turn of the century to 1939. In an era dominated by notions of the "vanishing Indian" and the idea that "surplus" reserve lands near growing cities represented an impediment to national and civic progress, local authorities overseeing the militia's expansion sometimes looked to nearby Indian reserves to meet training needs in an inexpensive and accessible way. The following two case studies deal with military training on Indian reserves during the Second World War, assessing the receptiveness of communities to military plans and the dynamics of federal decision-making in wartime. During the ensuing Cold War, operational requirements expanded and contracted in several cycles. Chapters eight to ten explore how competing interests in Indian reserves and traditional territories and shifting political priorities influenced new and pre-existing relationships between federal officials and Aboriginal communities. For a "vanishing military," the rise of Aboriginal activism brought new challenges, questions, and heightened pressures for change in the last three decades of the century.
Weiß-König, Stephan, Graffiti auf römischer Gefäßkeramik aus dem Bereich der Colonia Ulpia Traiana/Xanten
Creators: name: Heising, Alexander
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Rezension zu: Weiß-König, Stephan, Graffiti auf römischer Gefäßkeramik aus dem Bereich der Colonia Ulpia Traiana/Xanten. Mainz : Zabern, 2010. 280 S., 86 Taf. - (Xantener Berichte ; 17). ISBN 978-3-8053-4273-5
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 75/76 (2012/2013): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Multi-Objective Yield Optimization for Electrical Machines using Machine Learning
Creators: name: Huber, Morten
name: Fuhrländer, Mona
name: Schöps, Sebastian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences
subject: I.6.3; G.1.6; G.1.2
subject: 68T20, 65D17, 60G15,

description: This work deals with the design optimization of electrical machines under the consideration of manufacturing uncertainties. In order to efficiently quantify the uncertainty, blackbox machine learning methods are employed. A multi-objective optimization problem is formulated, maximizing simultaneously the reliability, i.e., the yield, and further performance objectives, e.g., the costs. A permanent magnet synchronous machine is modeled and simulated in commercial finite element simulation software. Four approaches for solving the multi-objective optimization problem are described and numerically compared, namely: epsilon-constraint scalarization, weighted sum scalarization, a multi-start weighted sum approach and a genetic algorithm.
Rom in der Spätantike : Historische Erinnerung im städtischen Raum
Creators: name: Haas, Jochen
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Rezension zu: Rom in der Spätantike : Historische Erinnerung im städtischen Raum ; [Kolloquium am 7. und 8. Juli 2006 am Seminar für Alte Geschichte und Epigraphik der Ruprecht-Karls-Universität Heidelberg]. Stuttgart : Steiner, 2012. 405 S. - (Heidelberger althistorische Beiträge und epigraphische Studien ; 51). ISBN 978-3-515-09445-0
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 75/76 (2012/2013): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Bibliographie Andrei Miron
Creators: name: Merten, Jürgen
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 75/76 (2012/2013): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Synthesis of cis,cis-6-aminospiro[4.4]nonan-1-ol and application of its derivatives as chiral ligands and auxiliaries
Creators: name: Lait, Susan M.
Publisher: name: University of Calgary
Year: 2004

description: Bibliography: p. 192-204, 217-220
description: A review showed that 1,3-amino-alcohols and their derivatives had proven useful as sources of chiral induction in organic synthesis and that there was much room for research in this area. Of particular interest was a cis,cis-spiro-1,3-amino-alcohol in which two spirocyclic pentacycles offered structural rigidity and the cis,cis geometry of the molecule held the amino and hydroxy moieties in close proximity. A synthesis of (1RS,5RS,6RS)-6-aminospiro[4.4 ]nonan-1-ol is reported in which only one diastereomer was produced in 22% yield over 6 steps. The structure of this amino-alcohol was confirmed by X-ray crystallography of the pivalamido-p­bromobenzoate derivative. Resolution of this amino-alcohol was achieved by co­crystallization with 0.5 equiv. mandelic acid in acetonitrile to give material that which appeared enantiopure by chiral GC. Conversion of (1R,5R,6R)-6-aminospiro[ 4.4]nonan-1-ol to (lR,5R,6R)-N-( 6-hydroxyspiro[ 4.4 ]non-1-yl)-2,2-dimethylpropionamide was accomplished in 1 step with 97% yield, and this amido-alcohol was used as a chiral auxiliary in BCh-catalyzed Diels­Alder reactions. Dienophiles were prepared in 1 step, in 74-77% yield, from (1R,5R,6R)­N-( 6-hydroxyspiro[ 4.4 ]non-l-yl)-2,2-dimethylpropionamide, and reaction of these dienophiles with a variety of dienes in the presence of 2 equiv. BCl₃ at -78°C gave Diels-Alder adducts with 77 to >98% de. The amido-alcohol auxiliary was readily cleaved from the Diels-Alder adducts by saponification and could be recovered in sufficient quantity and purity to warrant recycling. (1S,5S,6.5)-6-Aminospiro[4.4 ]nonan-1-ol was converted to phosphino-oxazine ligand (3aS,6aS,9aS)-5-(2-diphenylphosphanylphenyl)-1,2,3,3a,6a, 7,8,9-octahydro-4- oxa-6-azacyclopenta[ d]indene in 90% yield over 2 steps. Its structure was confirmed by X-ray crystallography of the ZnCh complex. The phosphino-oxazine was used as a ligand for asymmetric Pd-catalyzed alkylation of dimethyl malonate with 1,3-diphenyl acetate to give product with up to 91 % ee.
Inhalt des 75./76. Jahrgangs
Creators: name: Redaktion, Die
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 75/76 (2012/2013): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
A Block Cipher using Rotation and Logical XOR Operations
Creators: name: Kumar, D. Sravana
name: Suneetha, CH.
name: Chandrasekhar, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Cryptography is the study of methods of sending messages in disguised form so that only the intended recipients can remove the disguise and read the messages. Information security has become a very critical aspect of modern communication systems. With the global acceptance of the Internet as a medium of communication, virtually every computer in the world is connected to every other. It has created a new risk for the users of the computers with a constant threat of being hacked and being victims of data theft. In this connection data encryption has become an essential part of secure communication of the messages. In the present paper we propose a new method of encryption of data in blocks using the operations Rotation and Logical XOR
Current Algebra Approach to 2d Chiral Metals
Creators: name: Lee, Chao-Jung
name: Mulligan, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reinterpret Balents and Fisher's free 2d chiral metal [Phys. Rev. Lett. 76, 2782 (1996)] as a chiral $U(N)$ Wess-Zumino-Witten model at level $k = 1$. Here, the $U(N)$ symmetry relates the $N \rightarrow \infty$ low-energy excitations about the chiral Fermi surface. We obtain non-Fermi liquid generalizations of the free chiral metal that maintain the $U(N)$ symmetry of the $k=1$ theory by taking the level to be a positive integer $k>1$. We calculate two-point correlation functions of the $U(1)$ number density and current operators in these theories for general $k$. We find $k$ to provide an overall rescaling of the amplitude of these correlation functions. This construction illustrates the ersatz Fermi liquid proposal of Else, Thorgren, and Senthil [Phys. Rev. X 11, 021005 (2021)].
description: 16 pages, 4 figures
Schneider, Florian N., Neue Studien zur Hunsrück-Eifel-Kultur
Creators: name: Gleser, Ralf
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Rezension zu: Schneider, Florian N., Neue Studien zur Hunsrück-Eifel-Kultur. Rahden : Leidorf, 2012. 366 S., 76 Taf. - (Münchner archäologische Forschungen ; 2). ISBN 978-3-86757-152-4
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 77/78 (2014/2015): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
A Chebyshev type alternation theorem for best approximation by a sum of two algebras
Creators: name: Asgarova, Aida
name: Huseynli, Ali
name: Ismailov, Vugar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Let $X$ be a compact metric space, $C(X)$ be the space of continuous real-valued functions on $X$, and $A_1$, $A_2$ be two closed subalgebras of $C(X)$ containing constant functions. We consider the problem of approximation of a function $f\in C(X)$ by elements from $A_1+A_2$. We prove a Chebyshev type alternation theorem for a function $u_0\in A_1+A_2$ to be a best approximation to $f$.
description: 9 pages, references updated, to appear in Proceedings of the Edinburgh Mathematical Society
Critical behavior in the variation of GDR width at low temperature
Creators: name: Pandit, Deepak
name: Mukhopadhyay, S.
name: Pal, Surajit
name: De, A.
name: Banerjee, S. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present the first experimental giant dipole resonance (GDR) width systematics, in the temperature region 0.8 $\sim$ 1.2 MeV for $^{201}$Tl, a near Pb nucleus, to investigate the evolution of the GDR width in shell effect & pairing dominated region. The extracted GDR widths are well below the predictions of shell effect corrected thermal shape fluctuation model (TSFM) and thermal pairing included phonon damping model. A similar behavior of the GDR width is also observed for $^{63}$Cu measured in the present work and $^{119}$Sb, measured earlier. This discrepancy is attributed to the GDR induced quadrupole moment leading to a critical point in the increase of the GDR width with temperature. We incorporate this novel idea in the phenomenological description based on the TSFM for a better understanding of the GDR width systematics for the entire range of mass, spin and temperature.
description: Accepted for publication in Phys. Lett. B, 7 pages, 4 figures
Velocity measurements for a solar active region fan loop from Hinode/EIS observations
Creators: name: Young, P. R.
name: O'Dwyer, B.
name: Mason, H. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The velocity pattern of a fan loop structure within a solar active region over the temperature range 0.15-1.5 MK is derived using data from the EUV Imaging Spectrometer (EIS) on board the Hinode satellite. The loop is aligned towards the observer's line-of-sight and shows downflows (redshifts) of around 15 km/s up to a temperature of 0.8 MK, but for temperatures of 1.0 MK and above the measured velocity shifts are consistent with no net flow. This velocity result applies over a projected spatial distance of 9 Mm and demonstrates that the cooler, redshifted plasma is physically disconnected from the hotter, stationary plasma. A scenario in which the fan loops consist of at least two groups of "strands" - one cooler and downflowing, the other hotter and stationary -- is suggested. The cooler strands may represent a later evolutionary stage of the hotter strands. A density diagnostic of Mg VII was used to show that the electron density at around 0.8 MK falls from 3.2 x 10^9 cm^-3 at the loop base, to 5.0 x 10^8 cm^-3 at a projected height of 15 Mm. A filling factor of 0.2 is found at temperatures close to the formation temperature of Mg VII (0.8 MK), confirming that the cooler, downflowing plasma occupies only a fraction of the apparent loop volume. The fan loop is rooted within a so-called "outflow region" that displays low intensity and blueshifts of up to 25 km/s in Fe XII 195.12 A (formed at 1.5 MK), in contrast to the loop's redshifts of 15 km/s at 0.8 MK. A new technique for obtaining an absolute wavelength calibration for the EIS instrument is presented and an instrumental effect, possibly related to a distorted point spread function, that affects velocity measurements is identified.
description: 42 pages, 15 figures, submitted to ApJ
Bildwerke des späten Mittelalters im Rheinischen Landesmuseum Trier
Creators: name: Seewaldt, Peter
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 77/78 (2014/2015): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Cooper pair islanding model of insulating nanohoneycomb films
Creators: name: Hollen, S. M.
name: Valles, J. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We first review evidence for the Cooper pair insulator (CPI) phase in amorphous nanohoneycomb (NHC) films. We then extend our analysis of superconducting islands induced by film thickness variations in NHC films to examine the evolution of island sizes through the magnetic field-driven SIT. Finally, using the islanding picture, we present a plausible model for the appearance and behavior of the CPI phase in amorphous NHC films.
description: 7 pages, 3 figures
Kaiser Valentinian in Konz : Der Quellenwert der Gesetzesfragmente des Codex Theodosianus
Creators: name: Coskun, Altay
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: [nicht vorhanden]
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 77/78 (2014/2015): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Personal digital assistant technology as an effective and efficient tool for data collection and data management of patients at risk for ventilator-associated pneumonia in the intensive care unit
Creators: name: Lye, Taranisia
Publisher: name: University of Calgary
Year: 2002
Subjects: subject: AC1 .T484 2002 L94
subject: Additional copy: AC1 .T484 2002 L94A (Medical)

description: Bibliography: p. 141-147
description: UARC
description: Copyright waiver included: y
Fuchs, Rüdiger, Die Inschriften der Stadt Trier I (bis 1500)
Creators: name: Clemens, Lukas
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Rezension zu: Fuchs, Rüdiger, Die Inschriften der Stadt Trier I (bis 1500). Wiesbaden : Reichert, 2006. IX, 662 S., 88 Taf. - (Die deutschen Inschriften : Mainzer Reihe ; 10). ISBN 978-3-89500-555-8
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 77/78 (2014/2015): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
How to Use K-means for Big Data Clustering?
Creators: name: Mussabayev, Rustam
name: Mladenovic, Nenad
name: Jarboui, Bassem
name: Mussabayev, Ravil
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: K-means plays a vital role in data mining and is the simplest and most widely used algorithm under the Euclidean Minimum Sum-of-Squares Clustering (MSSC) model. However, its performance drastically drops when applied to vast amounts of data. Therefore, it is crucial to improve K-means by scaling it to big data using as few of the following computational resources as possible: data, time, and algorithmic ingredients. We propose a new parallel scheme of using K-means and K-means++ algorithms for big data clustering that satisfies the properties of a ``true big data'' algorithm and outperforms the classical and recent state-of-the-art MSSC approaches in terms of solution quality and runtime. The new approach naturally implements global search by decomposing the MSSC problem without using additional metaheuristics. This work shows that data decomposition is the basic approach to solve the big data clustering problem. The empirical success of the new algorithm allowed us to challenge the common belief that more data is required to obtain a good clustering solution. Moreover, the present work questions the established trend that more sophisticated hybrid approaches and algorithms are required to obtain a better clustering solution.
High resolution sequence stratigraphy and a study of reservoir controls of the glauconitic sandstone member in the Cessford Mannville C Pool, Southeastern Alberta
Creators: name: Lynch, Thérèse Kathleen
Publisher: name: University of Calgary
Year: 2002
Subjects: subject: AC1 .T484 2002 L968
subject: Additional copy: QE686 .L96 2002 (Gallagher)

description: Bibliography: p. 223-248
Stein, Frauke, Franken und Romanen : Aufsätze aus 25 Jahren Forschung ; Anlässlich ihres 75. Geburtstages
Creators: name: Päffgen, Bernd
Publisher: name: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Year: 2019

description: Rezension zu: Stein, Frauke, Franken und Romanen : Aufsätze aus 25 Jahren Forschung ; Anlässlich ihres 75. Geburtstages. Bonn : Habelt, 2011. 441 S. - (Saarbrücker Beiträge zur Altertumskunde ; 88). ISBN 978-3-7749-3598-3
description: Trierer Zeitschrift - Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete, Bd. 77/78 (2014/2015): Trierer Zeitschrift : Archäologie und Kunst des Trierer Landes und seiner Nachbargebiete
Population Gradients in the SDSS Galaxy Catalog. The role of merging
Creators: name: Tortora, C.
name: Napolitano, N. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the role of the environment on the colour and stellar population gradients in a local sample of ~3500 central and ~1150 satellite SDSS early-type galaxies (ETGs). The environment is parameterized in terms of the number of satellite galaxies, N_gal in each group. For central galaxies, we find that both optical colour and mass-to-light (M/L) ratio gradients are shallower in central galaxies residing in denser environments (higher N_gal). This trend is driven by metallicity gradients, while age gradients appear to be less dependent on the environment and to have a larger scatter. On the other hand, satellites do not show any differences in terms of the environment. The same results are found if galaxies are classified by central age, and both central and satellite galaxies have shallower gradients if they are older and steeper gradients if younger, satellites being independent of ages. In central galaxies, we show that the observed trends can be explained with the occurrence of dry mergings, which are more numerous in denser environments and producing shallower colour gradients because of more uniform metallicity distributions due to the mixing of stellar populations, while no final clues about merging occurrence can be obtained for satellites. Finally we discuss all systematics on stellar population fitting and their impact on the final results.
description: 8 pages, 3 figures, 2 tables, accepted for publication on MNRAS
Impact of Charge Symmetry Breaking on Gluon and Sea Quark Distributions in the Pion and Kaon
Creators: name: Hutauruk, Parada T. P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this exploratory study, I present, for the first time, the implications of the charge symmetry breaking (CSB) that arise from the $u$ and $d$ quark mass differences on gluon and sea quark distribution functions of the pion and kaon in the framework of the Nambu--Jona-Lasino (NJL) model, which is a quark-level chiral effective theory of QCD, with the help of the proper-time regularization scheme to simulate color confinement of QCD. From the analysis, one finds that the charge symmetry (CS) gluon distribution for the pion has a good agreement with the prediction results obtained from the recent lattice QCD simulation and JAM global fit QCD analysis at a higher scale of $Q^2 =$ 5 GeV$^2$. The size of the CSB effects on gluon and sea quark distributions for the pion with the realistic ratios of $m_u/m_d = 0.5$ at $Q^2 =$ 5 GeV$^2$ are respectively estimated by 1.3\% and 2.0\% at $x \simeq 1$ in comparison with those for $m_u/m_d = 1.0$, while those for the kaon are approximately about 0.3\% and 0.5\% at $ x \simeq 1$, respectively. A remarkable result is found that the CSB effects on gluon distribution for the kaon are smaller than that for the pion, which has a similar prediction result as that for the CS case.
description: 12 pages, 1 table, 15 figures
Monge-Ampère measures for toric metrics on abelian varieties
Creators: name: Gubler, Walter
name: Stadlöder, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: Primary 14G40, Secondary 11G10, 14G22

description: Toric metrics on a line bundle of an abelian variety $A$ are the invariant metrics under the natural torus action coming from Raynaud's uniformization theory. We compute here the associated Monge-Ampère measures for the restriction to any closed subvariety of $A$. This generalizes the computation of canonical measures done by the first author from canonical metrics to toric metrics and from discrete valuations to arbitrary non-archimedean fields.
description: 28 pages. Presentation in Section 3 changed to make the arguments easier to follow
Micro black holes in the laboratory
Creators: name: Bleicher, Marcus
name: Nicolini, Piero
name: Sprenger, Martin
name: Winstanley, Elizabeth
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The possibility of creating microscopic black holes is one of the most exciting predictions for the LHC, with potentially major consequences for our current understanding of physics. We briefly review the theoretical motivation for micro black hole production, and our understanding of their subsequent evolution. Recent work on modelling the radiation from quantum-gravity-corrected black holes is also discussed.
description: 8 pages, 2 figures, updated version with additional references, presented at First Caribbean Symposium on Nuclear and Astroparticle Physics - STARS2011, La Habana, Cuba, 2011
A Taxonomy of Prompt Modifiers for Text-To-Image Generation
Creators: name: Oppenlaender, Jonas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Multimedia (cs.MM)
subject: Computation and Language (cs.CL)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences
subject: H.5; H.m; J.5

description: Text-to-image generation has seen an explosion of interest since 2021. Today, beautiful and intriguing digital images and artworks can be synthesized from textual inputs ("prompts") with deep generative models. Online communities around text-to-image generation and AI generated art have quickly emerged. This paper identifies six types of prompt modifiers used by practitioners in the online community based on a 3-month ethnographic study. The novel taxonomy of prompt modifiers provides researchers a conceptual starting point for investigating the practice of text-to-image generation, but may also help practitioners of AI generated art improve their images. We further outline how prompt modifiers are applied in the practice of "prompt engineering." We discuss research opportunities of this novel creative practice in the field of Human-Computer Interaction (HCI). The paper concludes with a discussion of broader implications of prompt engineering from the perspective of Human-AI Interaction (HAI) in future applications beyond the use case of text-to-image generation and AI generated art.
description: 15 pages
Graph partitioning advance clustering technique
Creators: name: Madhulatha, T Soni
Publisher: name: arXiv
Year: 2012
Subjects: subject: Machine Learning (cs.LG)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Clustering is a common technique for statistical data analysis, Clustering is the process of grouping the data into classes or clusters so that objects within a cluster have high similarity in comparison to one another, but are very dissimilar to objects in other clusters. Dissimilarities are assessed based on the attribute values describing the objects. Often, distance measures are used. Clustering is an unsupervised learning technique, where interesting patterns and structures can be found directly from very large data sets with little or none of the background knowledge. This paper also considers the partitioning of m-dimensional lattice graphs using Fiedler's approach, which requires the determination of the eigenvector belonging to the second smallest Eigenvalue of the Laplacian with K-means partitioning algorithm.
description: 14 pages
Inhalt des Heftes 1989/2
Creators: name: Die Redaktion
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 30 Nr. 2 (1989): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Archäologie in Württemberg. Ergebnisse und Perspektiven archäologischer Forschung von der Altsteinzeit bis zur Neuzeit
Creators: name: Rösing, Friedrich W.
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: Rezension zu: Archäologie in Württemberg. Ergebnisse und Perspektiven archäologischer Forschung von der Altsteinzeit bis zur Neuzeit. Hrsg, von D. Planck für die Gesellschaft für Vor- und Frühgeschichte in Württemberg und Hohenzollern e. V., Stuttgart: Konrad Theiss Verlag 1988. ISBN 3-8062-0542-6.
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 31 Nr. 1 (1990): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Learning Anisotropic Interaction Rules from Individual Trajectories in a Heterogeneous Cellular Population
Creators: name: Messenger, Daniel A.
name: Wheeler, Graycen E.
name: Liu, Xuedong
name: Bortz, David M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: 70F17, 92-08, 92C37, 82C22

description: Interacting particle system (IPS) models have proven to be highly successful for describing the spatial movement of organisms. However, it has proven challenging to infer the interaction rules directly from data. In the field of equation discovery, the Weak form Sparse Identification of Nonlinear Dynamics (WSINDy) methodology has been shown to be very computationally efficient for identifying the governing equations of complex systems, even in the presence of substantial noise. Motivated by the success of IPS models to describe the spatial movement of organisms, we develop WSINDy for second order IPSs to model the movement of communities of cells. Specifically, our approach learns the directional interaction rules that govern the dynamics of a heterogeneous population of migrating cells. Rather than aggregating cellular trajectory data into a single best-fit model, we learn the models for each individual cell. These models can then be efficiently classified according to the active classes of interactions present in the model. From these classifications, aggregated models are constructed hierarchically to simultaneously identify different species of cells present in the population and determine best-fit models for each species. We demonstrate the efficiency and proficiency of the method on several test scenarios, motivated by common cell migration experiments.
Burg Freienstein - ein „Trauerspiel” mit Konsequenzen?
Creators: name: Hofrichter, Hartmut
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 31 Nr. 2 (1990): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
The intrusion of cancer: the lived experience of early menopause in young adult women
Creators: name: MacDonald, Catherine Ann
Publisher: name: Nursing
Year: 2002
Subjects: subject: AC1 .T484 2002 M2933

description: Bibliography: p. 87-95
description: This study is but a brief snapshot into the experience of early menopause from the perspective of four young adult women who were treated for cancer during their teens and early twenties. A phenomenological research methodology was utilized to address the study question. The major findings of the research revealed that: (a) the cancer experience is central to the discussion of early menopause and remains linked to their lives, (b) the themes of early menopause, infertility, and sexuality represent the essence of the phenomenon, ( c) while young adult women live through the intrusion of cancer in their life they arrive at a reconciliation of the cancer experience, and ( d) the women undergo a reconceptualization of their embodied self that is derived from their relational involvement with others. The implication for nursing is that young adult women living with early menopause represent a unique population within the cancer care continuum.
Dynamical Model for Meson Production off Nucleon and Application to Neutrino-Nucleus Reactions
Creators: name: Nakamura, Satoshi X.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I explain the Sato-Lee (SL) model and its extension to the neutrino-induced pion production off the nucleon. Then I discuss applications of the SL model to incoherent and coherent pion productions in the neutrino-nucleus scattering. I mention a further extension of this approach with a dynamical coupled-channels model developed in Excited Baryon Analysis Center of JLab.
description: 6 pages, 6 figures, 7th International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region (NuInt11), Dehradun, India, Mar. 7-11, 2011
A Rotating Disk in the HH 111 Protostellar System
Creators: name: Lee, Chin-Fei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The HH 111 protostellar system is a young Class I system with two sources, VLA 1 and VLA 2, at a distance of 400 pc. Previously, a flattened envelope has been seen in C18O to be in transition to a rotationally supported disk near the VLA 1 source. The follow-up study here is to confirm the rotationally supported disk at 2-3 times higher angular resolutions, at ~ 0.3" (or 120 AU) in 1.33 mm continuum, and ~ 0.6" (or 240 AU) in 13CO (J=2-1) and 12CO (J=2-1) emission obtained with the Submillimeter Array. The 1.33 mm continuum emission shows a resolved dusty disk associated with the VLA 1 source perpendicular to the jet axis, with a Gaussian deconvolved size of ~ 240 AU. The 13CO and 12CO emissions toward the dusty disk show a Keplerian rotation, indicating that the dusty disk is rotationally supported. The density and temperature distributions in the disk derived from a simple disk model are found to be similar to those found in bright T-Tauri disks, suggesting that the disk can evolve into a T-Tauri disk in the late stage of star formation. In addition, a hint of a low-velocity molecular outflow is also seen in 13CO and 12CO coming out from the disk.
description: 16 pages including 5 figures
Slowing light with a coupled optomechanical crystal array
Creators: name: Duan, Zhenglu
name: Fan, Bixuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the propagation of light in a resonator optical waveguide consisting of evanescently coupled optomechanical crystal array. In the strong driving limit, the Hamiltonian of system can be linearized and diagonalized. In this case we obtain the polaritons, which is formed by the interaction of photons and the collective excitation of mechanical resonators. By analyzing the dispersion relations of polaritons, we find that the band structure can be controlled by changing the related parameters. It has been suggested an engineerable band structure can be used to slow and stop light pulses.
description: 5 pages, 5 figures
Effect of 3d-doping on the electronic structure of BaFe2As2
Creators: name: McLeod, J. A.
name: Buling, A.
name: Green, R. J.
name: Boyko, T. D.
name: Skorikov, N. A.
name: Kurmaev, E. Z.
name: Neumann, M.
name: Finkelstein, L. D.
name: Ni, N.
name: Thaler, A.
name: Bud'ko, S. L.
name: Canfield, P. C.
name: Moewes, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The electronic structure of BaFe2As2 doped with Co, Ni, and Cu has been studied by a variety of experimental and theoretical methods, but a clear picture of the dopant 3d states has not yet emerged. Herein we provide experimental evidence of the distribution of Co, Ni, and Cu 3d states in the valence band. We conclude that the Co and Ni 3d states provide additional free carriers to the Fermi level, while the Cu 3d states are found at the bottom of the valence band in a localized 3d10 shell. These findings help shed light on why superconductivity can occur in BaFe2As2 doped with Co and Ni but not Cu.
description: 18 pages, 8 figures
Terrain effects on geoid determination
Creators: name: Bajracharya, Sujan
Publisher: name: University of Calgary
Year: 2003

description: Bibliography: p. 106-114
description: Gravimetric reduction schemes play an important role on precise geoid determination, especially in rugged areas. The main theme of this research is to explore different gravimetric reduction schemes in the context of precise geoid determination, in addition to the usual Helmert's second method of condensation and residual terrain model (RTM). A numerical investigation is carried out in the rugged area of the Canadian Rockies to study gravimetric geoid solutions based on the Rudzki inversion scheme, Helmert's second method of condensation, RTM, and the topographic-isostatic reduction methods of Airy-Heiskanen (AH) and Pratt-Hayford (PH). The mathematical formulations of each of these techniques are presented. This study shows that the Rudzki inversion scheme, which had neither been used in practice in the past nor is it used at present, can become a standard tool for gravimetric geoid determination since the Rudzki geoid performs as well as the Helmert and RTM geoids (in terms of standard deviation and range of maximum and minimum values) when compared to the GPS-levelling geoid of the test area. Also, it is the only gravimetric reduction scheme which does not change the equipotential surface and thus does not require the computation of the indirect effect. In addition, this thesis investigated two important topics for precise geoid determination; the density and gravity interpolation effects on Helmert geoid determination and the terrain aliasing effects on geoid determination using different mass reduction schemes. The study of first topic shows that the topographic-isostatic gravimetric reduction schemes like the PH or AH models or the topographic reduction of RTM, should be applied for smooth gravity interpolation for precise Helmert geoid determination instead of the commonly used Bouguer reduction scheme. The density information should be incorporated not only for the computation of terrain corrections (TC), but also in all other steps of the Helmert geoid computational process. The study of the second topic suggests that a DTM grid resolution of 6" or higher is required for precise geoid determination with an accuracy of a decimetre or higher for any gravimetric reduction method chosen in rugged areas.
Cations determine the mechanism and selectivity of alkaline ORR on Pt(111)
Creators: name: Kumeda, Tomoaki
name: Laverdure, Laura
name: Honkala, Karoliina
name: Melander, Marko M.
name: Sakaushi, Ken
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The proton-coupled electron transfer (PCET) mechanism of the oxygen reduction reaction (ORR) is a long-standing enigma in electrocatalysis.
description: Final Version
A biorthogonal approach to the infinite dimensional fractional Poisson measure
Creators: name: Bendong, Jerome
name: Menchavez, Sheila
name: da Silva, José Luís
Publisher: name: arXiv
Year: 2022
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: In this paper we use a biorthogonal approach to the analysis of the infinite dimensional fractional Poisson measure $π_σ^β$, $0<β\leq1$, on the dual of Schwartz test function space $\mathcal{D}'$. The Hilbert space $L^{2}(π_σ^β)$ of complex-valued functions is described in terms of a system of generalized Appell polynomials $\mathbb{P}^{σ,β,α}$ associated to the measure $π_σ^β$. The kernels $C_{n}^{σ,β}(\cdot)$, $n\in\mathbb{N}_{0}$, of the monomials may be expressed in terms of the Stirling operators of the first and second kind as well as the falling factorials in infinite dimensions. Associated to the system $\mathbb{P}^{σ,β,α}$, there is a generalized dual Appell system $\mathbb{Q}^{σ,β,α}$ that is biorthogonal to $\mathbb{P}^{σ,β,α}$. The test and generalized function spaces associated to the measure $π_σ^β$ are completely characterized using an integral transform as entire functions.
description: 39 pages, 1 figure
Nachrichten aus der Denkmalpflege
Creators: name: Liessem, Udo
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 31 Nr. 2 (1990): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Functional modelling of microarray time series with covariate curves
Creators: name: Berk, Maurice
name: Montana, Giovanni
Publisher: name: arXiv
Year: 2011
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In this paper we have demonstrated a complete framework for the analysis of microarray time series data. The unique characteristics of microarry data lend themselves well to a functional data analysis approach and we have shown how this naturally extends to the inclusion of covariates such as age and sex. Our model presented here is a specialisation of the more general functional mixed-effects model and, to the best of our knowledge, we are the first to show how to derive the maximum-likelihood estimators, EM-algorithm, confidence intervals and smoother matrix with more than one fixed-effects function. We were motivated by a real data set characterising healthy human gene expression levels over time and we have aimed to improve upon the existing results with a more flexible model. By taking a roughness penalty approach, this is achieved while avoiding overfitting, allowing for a departure from the original linear mixed-effects model when the data permits it. A deeper biological interpretation is required to fully assess our success here, but the results we have highlighted in this paper suggest that we can easily attach meaning to our findings.
Wiedereröffnung des Schlosses Kadriorg (Katharinental), Estland
Creators: name: Die Redaktion
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 41 Nr. 4 (2000): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege