cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A two-dimensional Fermi liquid with attractive interactions
Creators: name: Fröhlich, B.
name: Feld, M.
name: Vogt, E.
name: Koschorreck, M.
name: Köhl, M.
name: Berthod, C.
name: Giamarchi, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We realize and study an attractively interacting two-dimensional Fermi liquid. Using momentum resolved photoemission spectroscopy, we measure the self-energy, determine the contact parameter of the short-range interaction potential, and find their dependence on the interaction strength. We successfully compare the measurements to a theoretical analysis, properly taking into account the finite temperature, harmonic trap, and the averaging over several two-dimensional gases with different peak densities.
A semi-Markov model with memory for price changes
Creators: name: D'Amico, Guglielmo
name: Petroni, Filippo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: We study the high frequency price dynamics of traded stocks by a model of returns using a semi-Markov approach. More precisely we assume that the intraday returns are described by a discrete time homogeneous semi-Markov which depends also on a memory index. The index is introduced to take into account periods of high and low volatility in the market. First of all we derive the equations governing the process and then theoretical results have been compared with empirical findings from real data. In particular we analyzed high frequency data from the Italian stock market from first of January 2007 until end of December 2010.
Sag Harbor First Presbyterian Church, Meetings and Vital Statistics, 1797-1834
Creators: name: (:Unas)
Publisher: name: Sag Harbor First Presbyterian Church
Year: 1797
Subjects: Recording & registration
Church records
Organizations
Churches
Presbyterian churches
Sag Harbor
Baptisms
Marriages
Funerals

description: This volume contains records of marriages and baptisms from 1797 through1835 and 1832 respectively. There are also records of deaths, which appear to be 1797 through 1815. Church meetings, which seem to be some sort of attempt to address unbecoming behavior and controversies between members, run from 1806 until 1834.
Reconstructing $f(R,T)$ gravity from holographic dark energy
Creators: name: Houndjo, M. J. S.
name: Piattella, Oliver F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We consider cosmological scenarios based on $f(R,T)$ theories of gravity ($R$ is the Ricci scalar and $T$ is the trace of the energy-momentum tensor) and numerically reconstruct the function $f(R,T)$ which is able to reproduce the same expansion history generated, in the standard General Relativity theory, by dark matter and holographic dark energy. We consider two special $f(R,T)$ models: in the first instance, we investigate the modification $R + 2f(T)$, i.e. the usual Einstein-Hilbert term plus a $f(T)$ correction. In the second instance, we consider a $f(R)+λT$ theory, i.e. a $T$ correction to the renown $f(R)$ theory of gravity.
description: 16 pages, 6 figures, accepted for publication in IJMPD
Introduction
Creators: name: Crane, Susan
Publisher: name: Columbia University
Year: 1994
Subjects: English literature

description: The Thesis of this book is that gender is crucial to Geoffrey Chaucer's conception of romance in the
Canterbury Tales. In Chaucer's works, as in those of other poets who engage romance, gender provides a way of reading aspects of the genre beyond courtship alone. Social hierarchies, magic, adventure, and less salient preoccupations of romance are so intimately involved in gender that their operations are unclear in isolation from it. My concern is not with identifying specific sources and analogues for the Canterbury Tales nor with encompassing in my discussion every aspect of romance. The many studies that illuminate these issues provide a context for investigating more specifically how Chaucer understood the place and meaning of gender in the history of romance.
The Status of Scholarship of Teaching and Learning in the Accounting Discipline: A Case Study of Academics’ Perspectives
Creators: name: Anjum, Sanobar
Publisher: name: Werklund School of Education
Year: 2019
Subjects: subject: scholarship of teaching and learning; accounting education research; pedagogy; professional development; tenure, promotion, and teaching awards.
subject: Education
subject: Education--Higher
subject: Accounting

description: There is paucity of scholarship in accounting education (Rebele & St. Pierre, 2015). This qualitative case study (Merriam, 2009) explored the perception of accounting academic’s engagement in scholarship of teaching and learning (SoTL). The purposes were to ascertain if SoTL had an impact on instructional strategies used, motivation to attend professional development programs, and links to teaching awards, promotion, and tenure. Mezirow's (1991) transformative learning theory was chosen to be the theoretical framework underpinning this research. Semi-structured interviews and documents were collected from fourteen accounting academics to gauge the perceptions of engagement with SoTL initiatives. Key findings were that the primary reasons for accounting academics to engage in SoTL were their intrinsic motivation for teaching and their desire for collaboration and discussion with peers. Two impediments to SoTL were the lack of reward in the tenure system and the lack of educational training of accounting academics. In fact, this study found that accounting education suffers from an underdeveloped definition of high-quality teaching. Moreover, scholarly teaching (where instructional strategies are research-informed through literature review, including peer collaboration and review) as well as scholarship of teaching and learning (where systematic investigation to create deep learning in one’s own classroom) are completely absent. However, Pathway Commission Report (2012) and AACSB accounting accreditation standards do place special emphasis on creating: pedagogical experts in the accounting domain in addition to accounting doctoral degree holders furthering traditional disciplinary research and professional practitioners. Consequently, further research needs to be aligned to investigate threshold concepts to redesign accounting curriculum and formulate evidence-based pedagogy. Finally, formal teacher professional development programs should be organized to advance growth and introduction of SoTL in accounting education on university campuses.
Planet Hunters: Assessing the Kepler Inventory of Short Period Planets
Creators: name: Schwamb, Megan E.
name: Lintott, Chris J.
name: Fischer, Debra A.
name: Giguere, Matthew J.
name: Lynn, Stuart
name: Smith, Arfon M.
name: Brewer, John M.
name: Parrish, Michael
name: Schawinski, Kevin
name: Simpson, Robert J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the results from a search of data from the first 33.5 days of the Kepler science mission (Quarter 1) for exoplanet transits by the Planet Hunters citizen science project. Planet Hunters enlists members of the general public to visually identify transits in the publicly released Kepler light curves via the World Wide Web. Over 24,000 volunteers reviewed the Kepler Quarter 1 data set. We examine the abundance of \geq 2 R\oplus planets on short period (< 15 days) orbits based on Planet Hunters detections. We present these results along with an analysis of the detection efficiency of human classifiers to identify planetary transits including a comparison to the Kepler inventory of planet candidates. Although performance drops rapidly for smaller radii, \geq 4 R\oplus Planet Hunters \geq 85% efficient at identifying transit signals for planets with periods less than 15 days for the Kepler sample of target stars. Our high efficiency rate for simulated transits along with recovery of the majority of Kepler \geq 4 R\oplus planets suggest suggests the Kepler inventory of \geq 4 R\oplus short period planets is nearly complete.
description: 41 pages,13 figures, 8 tables, accepted to ApJ
Experimental linear-optical implementation of a multifunctional optimal qubit cloner
Creators: name: Lemr, Karel
name: Bartkiewicz, Karol
name: Cernoch, Antonin
name: Soubusta, Jan
name: Miranowicz, Adam
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the first experimental implementation of a multifunctional device for the optimal cloning of one to two qubits. Previous implementations have always been designed to optimize the cloning procedure with respect to one single type of a priori information about the cloned state. In contrast, our "all-in-one" implementation is optimal for several prominent regimes such as universal cloning, phase-covariant cloning, and also the first ever realized mirror phase-covariant cloning, when the square of the expected value of Pauli's Z operator is known in advance. In all these regimes the experimental device yields clones with almost maximum achievable average fidelity (97.5% of theoretical limit). Our device has a wide range of possible applications in quantum information processing, especially in quantum communication. For instance, one can use it for incoherent and coherent attacks against a variety of cryptographic protocols, including the Bennett-Brassard 1984 protocol of quantum key distribution through the Pauli damping channels. It can be also applied as a state-dependent photon multiplier in practical quantum networks.
description: 9 pages, 6 figures, accepted to Phys. Rev. A (Rapid Communications)
De-noising and contrast enhancement via wavelet shrinkage and nonlinear adaptive gain
Creators: name: Zong, Xuli
name: Laine, Andrew F.
name: Geiser, Edward A.
name: Wilson, David C.
Publisher: name: Columbia University
Year: 1996
Subjects: Medicine
Biomedical engineering

description: This paper presents an approach which addresses both de-noising and contrast enhancement. In a multiscale wavelet analysis framework, we take advantage of both soft thresholding and hard thresholding wavelet shrinkage techniques to reduce noise. In addition, we carry out nonlinear processing to enhance contrast within structures and along boundaries. Feature restoration and enhancement are accomplished by modifying the gain of a signal's variational energy. The multiscale discrete dyadic wavelet transform adapted in this paper is treated as a process for the diffusion of variational energy from a signal stored as the power (scaled variational energy) of wavelet coefficients. We show that a discrete dyadic wavelet transform has the capability to separate feature variational energy from noise variational energy. De- noising and feature enhancement are achieved by simultaneously lowering noise variational energy and raising feature variational energy in the transform domain. We present methods for achieving this objective, including regulated soft thresholding and adaptive nonlinear processing combined with hard thresholding. We have applied this algorithm to synthetic and real signals as well as images with additive Gaussian white noise. Experimental results show that de-noised as well as enhanced signals and images are free from artifacts. Sample analysis and experimental results are presented.
Buen Vivir als Konzept einer Bildung für nachhaltige Entwicklung? : eine nachhaltigkeitsorientierte Diskursanalyse
Creators: name: Recknagel, Lukas
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2019
Subjects: subject: 370

description: Buen Vivir wird zunehmend im Kontext von Bildung für nachhaltige Entwicklung (BNE) thematisiert. Gleichwohl sind die zugrundeliegenden Debatten zur Beziehung von Buen Vivir und Nachhaltigkeit nicht abgeschlossen und durch Kontroversen gekennzeichnet: Buen Vivir gilt einerseits als eine relevante Perspektive für die Fortentwicklung des Nachhaltigkeitsdiskurses, andererseits existieren Zweifel hinsichtlich der Übertragbarkeit des lateinamerikanischen Konzepts. Die vorliegende Arbeit analysiert 34 deutschsprachige Artikel über Buen Vivir aus nachhaltigkeitstheoretischer Perspektive. Demnach nimmt Buen Vivir zahlreiche Positionen ein, die im Nachhaltigkeitsdiskurs nicht dominant sind. Die nachhaltigkeitsbezogenen Aussagen des Buen Vivir-Diskurses werden anschließend auf eine BNE übertragen und so expliziert, wie Inhalte des Buen Vivir im Rahmen einer BNE verortet werden können.
description: Buen Vivir is increasingly being addressed in the context of Education for Sustainable Development (ESD). However, the underlying debates on Buen Vivir's relationship with sustainability are incomplete and controversial: on the one hand Buen Vivir is seen as a relevant perspective for the sustainability discourse, on the other hand there are doubts about the portability of the Latin American concept. The present work analyzes 34 German-language articles on Buen Vivir from a sustainability theory perspective. The result is that Buen Vivir takes numerous positions that are not dominant in the sustainability discourse. The sustainability-related statements of the Buen Vivir discourse are then transferred to ESD. In this way it is explained in which way contents of the Buen Vivir can be located within ESD.
Digital Humanities Course Registry - WG meeting at DARIAH-EU 2021 event
Creators: name: Woldrich, Anna
name: Wessels, Leon
name: Schmeer, Hendrik
Publisher: name: Zenodo
Year: 2021
Subjects: digital humanities
skills
students
researchers
research infrastructures
lecturers

description: This presentation gives an overview of the Digital Humanities Course Registry (DHCR), information about the usage statistics and an update about the most recent technological enhancements. 

The Digital Humanities Course Registry is a curated platform that provides an overview of the growing range of teaching activities in the field of digital humanities worldwide.

The platform is a joint effort of two European research infrastructures:
CLARIN-ERIC and DARIAH-EU.
Effects of phosphorylation on the NLRP3 inflammasome
Creators: name: Sandall, Christina F.
name: MacDonald, Justin Anthony
Publisher: name: Cumming School of Medicine
Year: 2019
Subjects: nucleotide-binding domain and leucine rich repeat-containing receptor
NLR
NLRP
NACHT
inflammasome
phosphorylation
cAMP-dependent protein kinase, PKA
molecular modeling

description: The pyrin domain containing Nod-like receptors (NLRPs) are a family of pattern recognition receptors known to regulate an array of immune signaling pathways. Emergent studies demonstrate the potential for regulatory control of inflammasome assembly by phosphorylation, notably NLRP3. Over a dozen phosphorylation sites have been identified for NLRP3 with many more suggested by phosphoproteomic studies of the NLRP family. Well-characterized NLRP3 phosphorylation events include Ser198 by c-Jun terminal kinase (JNK), Ser295 by protein kinase D (PKD) and/or protein kinase A (PKA), and Tyr861 by an unknown kinase but is dephosphorylated by protein tyrosine phosphatase non-receptor 22 (PTPN22). Since the PKA- and PKD-dependent phosphorylation of NLRP3 at Ser295 is best characterized, we provide detailed review of this aspect of NLRP3 regulation. Phosphorylation of Ser295 can attenuate ATPase activity as compared to its dephosphorylated counterpart, and this event is likely unique to NLRP3. In silico modeling of NLRP3 is useful in predicting how Ser295 phosphorylation might impact upon the structural topology of the ATP-binding domain to influence catalytic activity. It is important to gain as complete understanding as possible of the complex phosphorylation-mediated mechanisms of regulation for NLRP3 in part because of its involvement in many pathological processes.
Quantum biology on the edge of quantum chaos
Creators: name: Vattay, Gabor
name: Kauffman, Stuart
name: Niiranen, Samuli
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biomolecules (q-bio.BM)
subject: Molecular Networks (q-bio.MN)
subject: Populations and Evolution (q-bio.PE)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We give a new explanation for why some biological systems can stay quantum coherent for long times at room temperatures, one of the fundamental puzzles of quantum biology. We show that systems with the right level of complexity between chaos and regularity can increase their coherence time by orders of magnitude. Systems near Critical Quantum Chaos or Metal-Insulator Transition (MIT) can have long coherence times and coherent transport at the same time. The new theory tested in a realistic light harvesting system model can reproduce the scaling of critical fluctuations reported in recent experiments. Scaling of return probability in the FMO light harvesting complex shows the signs of universal return probability decay observed at critical MIT. The results may open up new possibilities to design low loss energy and information transport systems in this Poised Realm hovering reversibly between quantum coherence and classicality.
Adaptive spatial-temporal filtering applied to x-ray fluoroscopy angiography
Creators: name: Schoonenberg, Gert
name: Schrijver, Marc
name: Duan, Qi
name: Kemkers, Richard
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2005
Subjects: Medicine
Biomedical engineering

description: Adaptive filtering of temporally varying X-ray image sequences acquired during endovascular interventions can improve the visual tracking of catheters by radiologists. Existing techniques blur the important parts of image sequences, such as catheter tips, anatomical structures and organs; and they may introduce trailing artifacts. To address this concern, an adaptive filtering process is presented to apply temporal filtering in regions without motion and spatial filtering in regions with motion. The adaptive filtering process is a multi-step procedure. First a normalized motion mask that describes the differences between two successive frames is generated. Secondly each frame is spatially filtered using the specific motion mask to specify different types of filtering in each region. Third an IIR filter is then used to combine the spatially filtered image with the previous output image; the motion mask thus serves as a weighted input mask to determine how much spatial and temporal filtering should be applied. This method results in improving both the stationary and moving fields. The visibility of static anatomical structures and organs increases, while the motion of the catheter tip and motion of anatomical structures and organs remain unblurred and visible during interventional procedures.
Additional file 2 of Factors contributing to mitogenome size variation and a recurrent intracellular DNA transfer in Melastoma
Creators: name: Zhou, Shuaixi
name: Zhi, Xueke
name: Yu, Runxian
name: Liu, Ying
name: Zhou, Renchao
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Table S2. Primers used for PCR amplification and sequencing.
Discovery and visualization of interesting patterns
Creators: name: Steinbrecher, Matthias
Publisher: name: Universitätsbibl.
Year: 2013
Subjects: subject: Data Mining
subject: Hochschulschrift
subject: Online-Publikation
subject: 006

description: Die Preise für Speicherplatz fallen stetig, da verwundert es nicht, dass Unternehmen riesige Datenmengen anhäufen und sammeln. Diese immensen Datenmengen müssen jedoch mit geeigneten Methoden analysiert werden, um für das Unternehmen überlebensnotwendige Muster zu identifizieren. Solche Muster können Probleme aber auch Chancen darstellen. In jedem Fall ist es von größter Bedeutung, rechtzeitig diese Muster zu entdecken, um zeitnah reagieren zu können. Um breite Nutzerschichten anzusprechen, müssen Analysemethoden ferner einfach zu bedienen sein, sofort Rückmeldungen liefern und intuitive Visualisierungen anbieten. Ich schlage in der vorliegenden Arbeit Methoden zur Visualisierung und Filterung von Assoziationsregeln basierend auf ihren zeitlichen Änderungen vor. Ich werde lingustische Terme (die durch Fuzzymengen modelliert werden) verwenden, um die Historien von Regelbewertungsmaßen zu charakterisieren und so eine Ordnung von relevanten Regeln zu generieren. Weiterhin werde ich die vorgeschlagenen Methoden auf weitereModellarten übertragen, die Software-Plattformvorstellen, die die Analysemethoden dem Nutzer zugänglich macht und schließlich empirische Auswertungen auf Echtdaten aus Unternehmenskooperationen vorstellen, die die Wirksamkeit meiner Vorschläge belegen.
Recognition of micro-array protein crystals images using multi-scale representations
Creators: name: Wang, Ya
name: Kim, David H.
name: Angelini, Elsa D.
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2005
Subjects: Medicine
Biomedical engineering

description: Micro-array protein crystal images are now routinely acquired automatically by CCD cameras. High-throughput automatic classification of protein crystals requires to alleviation of the time-consuming task of manual visual inspection. We propose a classification framework combined with a multi-scale image processing method for recognizing protein crystals and precipitates versus clear drops. The main two points of the processing method are the multi-scale Laplacian pyramid filters and histogram analysis techniques to find an effective feature vector. The processing steps include: 1. Tray well cropping using Radon Transform; 2. Droplet cropping using an ellipsoid Hough Transform; 3. Multi-scale image separation with Laplacian pyramidal filters; 4. Feature vector extraction from the histogram of the multi-scale boundary images. The feature vector combines geometric and texture features of each image and provides input to a feed forward binomial neural network classifier. Using human (expert crystallographers) classified images as ground truth, the current experimental results gave 86% true positive and 94% true negative rates (average true percentage is 90%) using an image database which contained over 2,000 images. To enable NESG collaborators to carry our crystal classification, a web-based Matlab server was also developed. Users at other locations on the internet can input micro-array crystal image folders and parameters for training and testing processes through a friendly web interface. Recognition results are shown on the client side website and may be downloaded by a remote user as an Excel spreadsheet file.
Density wave instabilities of tilted fermionic dipoles in a multilayer geometry
Creators: name: Block, J. K.
name: Zinner, N. T.
name: Bruun, G. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider the density wave instability of fermionic dipoles aligned by an external field, and moving in equidistant layers at zero temperature. Using a conserving Hartree-Fock approximation, we show that correlations between dipoles in different layers significantly decrease the critical coupling strength for the formation of density waves when the distance between the layers is comparable to the inter-particle distance within each layer. This effect, which is strongest when the dipoles are oriented perpendicular to the planes, causes the density waves in neighboring layers to be in-phase for all orientations of the dipoles. We furthermore demonstrate that the effects of the interlayer interaction can be understood from a classical model. Finally, we show that the interlayer correlations are important for experimentally relevant dipolar molecules, including the chemically stable $^{23}$Na$^{40}$K and $^{40}$K$^{133}$Cs, where the density wave regime is within experimental reach.
description: 18 pages, 11 figures; new version with expanded discussion on experimental relevance including one new figure
An Incremental and Optimized Learning Method for the Automatic Classification of Protein Crystal Images
Creators: name: Xu, George
name: Chiu, Casey
name: Angelini, Elsa D.
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2006
Subjects: Medicine
Biomedical engineering

description: Protein production has experienced great advances in recent years. In particular, high throughput protein production, coupled with the use of robotics, outputs thousands of mixtures in micro-array wells. To detect the presence of protein crystal formation, images of these wells are acquired regularly using robotic cameras. Traditionally, a crystallographer would manually process each image — identifying the wells that resulted in protein crystal formation. This manual inspection process is slow and given the high rate of mixture output, it has become near impossible for crystallographers keep up. Our aim is to create an automated method of detecting which wells have crystals and which ones do not. We make use of a neural network that is trained based on manually classified ground truth data. After it is trained, the automatic classifier would give a binary output — a value of one for the detection of crystals and precipitates in images and a value of zero otherwise. In our previous papers, the core methods of using multi-scale Laplacian image representation to extract image features and the implementation of the neural network classifier were discussed. Here we present a new, optimized approach to training the neural network and results from a large-scale test. We claim that the neural network can be better trained if the training image dataset is optimized in the sense that ambiguous images are removed during the initial training processes. Incremental training is implemented so that the network can be improved as more data becomes available. From initial results with training based on a 6,000 optimized image dataset, the accuracy of the improved classifier approaches 95% in identifying a wide array of images.
NGC 1624-2: A slowly rotating, X-ray luminous Of?cp star with an extraordinarily strong magnetic field
Creators: name: Wade, G. A.
name: Apellániz, J. Maíz
name: Martins, F.
name: Petit, V.
name: Grunhut, J.
name: Walborn, N. R.
name: Barbá, R. H.
name: Gagné, M.
name: García-Melendo, E.
name: Jose, J.
name: Moffat, A. F. J.
name: Nazé, Y.
name: Neiner, C.
name: Pellerin, A.
name: Ordaz, M. Penadés
name: Shultz, M.
name: Simón-Díaz, S.
name: Sota, A.
name: Collaboration, the MiMeS
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: This paper presents a first observational investigation of the faint Of?cp star NGC 1624-2, yielding important new constraints on its spectral and physical characteristics, rotation, magnetic field strength, X-ray emission and magnetospheric properties. Modeling the spectrum and spectral energy distribution, we conclude that NGC 1624-2 is a main sequence star of mass M {\simeq} 30 M{\odot}, and infer an effective temperature of 35 {\pm} 2 kK and log g = 4.0 {\pm} 0.2. Based on an extensive time series of optical spectral observations we report significant variability of a large number of spectral lines, and infer a unique period of 157.99 {\pm} 0.94 d which we interpret as the rotational period of the star. We report the detection of a very strong - 5.35 {\pm} 0.5 kG - longitudinal magnetic field , coupled with probable Zeeman splitting of Stokes I profiles of metal lines confirming a surface field modulus  of 14 {\pm} 1 kG, consistent with a surface dipole of polar strength >~ 20 kG. This is the largest magnetic field ever detected in an O-type star, and the first report of Zeeman splitting of Stokes I profiles in such an object. We also report the detection of reversed Stokes V profiles associated with weak, high-excitation emission lines of O iii, which we propose may form in the close magnetosphere of the star. We analyze archival Chandra ACIS-I X-ray data, inferring a very hard spectrum with an X-ray efficiency log Lx/Lbol = -6.4, a factor of 4 larger than the canonical value for O-type stars and comparable to that of the young magnetic O-type star θ1 Ori C and other Of?p stars. Finally, we examine the probable magnetospheric properties of the star, reporting in particular very strong magnetic confinement of the stellar wind, with η* {\simeq} 1.5 {\times} 10^4, and a very large Alfven radius, RAlf = 11.4 R*.
description: 17 pages, MNRAS accepted and in press
Comparison of a dyadic wavelet image enhancement algorithm with unsharp masking and median filtering for mammography
Creators: name: Xin, Yunong
name: Huda, Walter
name: Laine, Andrew F.
name: Fan, Jian
name: Steinbach, Barbara
name: Honeyman, Janice
Publisher: name: Columbia University
Year: 1995
Subjects: Medicine
Biomedical engineering

description: Image processing techniques using wavelet signal analysis techniques have shown promise in mammography. Wavelet algorithms are compared with traditional image enhancement techniques of unsharp masking and median filtering. Computer simulated phantom images were generated containing lesions mimicking masses and microcalcifications. The degree of image enhancement was evaluated by comparing processed and original signal-to-noise (SNR) ratios in such phantom images. Results obtained in this study suggest that image processing algorithms based on the wavelet transform are likely to enhance the visibility of low-contrast features in mammograms.
Characterization of mouse hematopoietic stem cells primed to actively self-renew by NUP98-HOXA10hd fusion gene
Creators: name: Sekulovic, Sanja
Publisher: name: University of British Columbia
Year: 2011

description: High-level expansion of hematopoietic stem cells (HSCs) in vitro will have an important clinical impact in addition to enabling elucidation of their regulation. Recently, it has been demonstrated that engineered NUP98-HOXA10hd expression stimulates >1,000-fold net expansions of murine HSCs in 10-day cultures initiated with bulk lin⁻Sca-1⁺c-kit⁺ cells. In this thesis I coupled such ability of engineered NUP98-HOXA10hd expression, with strategies to purify fetal and adult HSCs and analyze their expansion clonally. I discovered that NUP98-HOXA10hd stimulates comparable expansions of HSCs from both sources at near unit efficiency in cultures initiated with single cells. The clonally expanded HSCs showed preservation of normal proliferation kinetics in vitro and consistent balanced contributions long-term to the lymphoid and myeloid lineages in vivo without evidence of leukemogenic transformation. Preservation of a normal proliferating HSC phenotype allowed their re-isolation in large numbers at 25% purity. These findings point to the effects of NUP98-HOXA10hd on HSCs in vitro being mediated by promoting self-renewal and set the stage for further dissection of this process. Although there is growing excitement about the prospect of in vitro expansion of HSCs and their use to enhance the safety and application of transplant-based therapies, deleterious consequences of such manipulations remain unknown. Thus, I further examined the impact of HSC self-renewal divisions in vitro and in vivo on their subsequent regenerative and continuing ability to sustain blood cell production in the absence of telomerase. HSC expansion in vitro was obtained using NUP98-HOXA10hd transduction strategy and, in vivo, using a serial transplant protocol. I observed ~10kb telomere loss in leukocytes produced in secondary mice transplanted with HSCs regenerated in primary recipients of NUP98-HOXA10hd-transduced and in vitro-expanded Tert⁻/⁻ HSCs 6 months before. The second generation leukocytes also showed elevated expression of γH2AX (relative to control) indicative of greater accumulating DNA damage. In contrast, significant telomere shortening was not detected in leukocytes produced from freshly isolated, serially transplanted wild-type or Tert⁻/⁻ HSCs, suggesting that HSC replication post-transplant is not limited by telomere shortening in the mouse. These findings document a role of telomerase in telomere homeostasis, and in preserving HSC functional integrity upon prolonged self-renewal stimulation.
Simulated phantom images for optimizing wavelet-based image processing algorithms in mammography
Creators: name: Xing, Yunong
name: Huda, Walter
name: Laine, Andrew F.
name: Fan, Jian
Publisher: name: Columbia University
Year: 1994
Subjects: Medicine
Biomedical engineering

description: Image processing techniques using wavelet signal analysis have shown some promise in mammography. It is desirable, however, to optimize these algorithms before subjecting them to clinical evaluation. In this study, computer simulated images were used to study the significance of all the parameters available in a multiscale wavelet image processing algorithm designed to enhance mammograms. Computer simulated images had a gaussian-shaped signal in half of the regions of interest and included added random noise. Signal intensity and noise levels were varied to determine the detection threshold contrast-to-noise ratio (CNR). An index of the ratio of output to input contrast to noise ratios was used to optimize a wavelet based image processing algorithm. Computed CNRs were generally found to correlate well with signal detection by human observers in both the original and processed images. Use of simulated phantom images enabled the parameters associated with multiscale wavelet based processing techniques to be optimized.
Local Control of Temperature in a Theoretical Human Model of Selective Brain Cooling
Creators: name: Neimark, Matthew A.
name: Konstas, Angelos-Aristeidis
name: Choi, Jae H.
name: Laine, Andrew F.
name: Pile-Spellman, John
Publisher: name: Columbia University
Year: 2007
Subjects: Medicine
Biomedical engineering

description: A method of feedback control of local brain temperature during therapeutic intracarotid cold saline infusion is presented and tested on a theoretical cerebral heat transfer model based on the Pennes bioheat equation. In this temperature control method, the infusion rate of cold saline is varied based on the rate of temperature change, and the deviation of temperature to a target, within a voxel in the treated region of brain. This control method is tested in cases where the head is exposed to ambient room temperature, and where the head is packed in ice. In both the ice and non-ice cases, target temperature (33degC) is achieved in the voxel according to the desired time constant (2 minutes). Two hours of treatment decreased the required inflow of ice-cold saline from 30 ml/min to 21 and 7 ml/min in the non-ice and ice cases, respectively. Intracarotid hematocrit had higher values in the non-ice case.
The Role of Intracarotid Cold Saline Infusion on a Theoretical Brain Model Incorporating the Circle of Willis and Cerebral Venous Return
Creators: name: Neimark, Matthew A.
name: Konstas, Angelos-Aristeidis
name: Choi, Jae H.
name: Laine, Andrew F.
name: Pile-Spellman, John
Publisher: name: Columbia University
Year: 2007
Subjects: Medicine
Biomedical engineering

description: This study describes a theoretical model of brain cooling by intracarotid cold saline infusion which takes into account redistribution of cold perfusate through the circle of Willis (CoW) and cold venous return (VR) from the head. This model is developed in spherical coordinates on a four tissue layer hemispherical geometrical configuration. Temperature evolution is modeled according to the Pennes bioheat transfer equation. Simulations were run over a 1 hour period and 30 ml/min of freezing cold saline with the baseline model (no VR, no CoW), VR model (without CoW), and CoW model (with VR). The VR model demonstrates continuing temperature drop in the treatment region of the brain not observed in the baseline model and its final mean ipsilateral anterior temperature was approximately 31 degC. The temperature effect in the CoW model was present but less robust in the ipsilateral anterior region, as final temperature was 32 degC. However, cooling was also achieved in contralateral and posterior brain regions. This model continues to demonstrate the feasibility of intracarotid cold saline infusion for ischemic stroke therapy.
Holographic helical superconductors
Creators: name: Donos, Aristomenis
name: Gauntlett, Jerome P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that D=5 electrically charged AdS black branes can have instabilities associated with spatially modulated p-wave superconductors with helical structure. We show that the instabilities are present within N=4 $SU(2)\times U(1)$ gauged supergravity and hence within D=10 and D=11 supergravity.
description: 21 pages, 3 figures. Very minor changes. Version to be published in JHEP
Leveraging Genetic Algorithm and Neural Network in Automated Protein Crystal Recognition
Creators: name: Po, Ming J.
name: Laine, Andrew F.
Publisher: name: Columbia University
Year: 2008
Subjects: Medicine
Biomedical engineering

description: We propose a classification framework combined with a multi-scale image processing method for recognizing protein crystals in high-throughput images. The main three points of the processing method are the multiple population genetic algorithm for region of interest detection, multi-scale Laplacian pyramid filters and histogram analysis techniques to find an effective feature vector. Using human (expert crystallographers) classified images as ground truth, the current experimental results gave 88% true positive and 99% true negative rates, resulting in an average true performance of ~93.5% validated on an image database which contained over 79,000 images.
D5.1: Installation requirements and best practices for hosting Exascale systems
Creators: name: Hayk Shoukourian
name: Gert Svensson
name: François Robin
name: Huub Stoffers
name: Ezhilmathi Krishnasamy
name: Sebastien Varrette
Publisher: name: Zenodo
Year: 2021
Subjects: Deliverable
HPC
Research infrastructure

description: Supercomputing centres continuously aim to improve their resources for a better service provision to the HPC community. Within this objective, High-Performance Computing (HPC) data centres position themselves at the forefront of computing technologies, with regular system hardware and software updates allowing to ensure continuous research and enable further scientific discoveries.
Accommodating these updates on a regular basis is, however, not a trivial task, as planning and commissioning a data centre with a lifespan of several years while capable of hosting diverse supercomputers of different generations is quite a challenge.
This document discusses installation requirements and best practices for hosting next generation HPC systems (i.e. pre-exascale and exascale), with a specific focus on the current European ecosystem. More specifically, this document outlines foreseeable major challenges related to a wide spectrum of data centres' building infrastructure relevant aspects: ranging from hosting facility, through power availability and usage of renewable energy sources to cooling solutions and waste heat reuse, as well as suggests best practices for addressing those issues.
This best practice guide aims to deliver information and guidance useful when planning or upgrading an HPC data centre. The target audience of this document is representatives of supercomputing sites that plan to deploy large-scale systems capable of delivering an exascale (or close to exascale) compute performance in the coming years.
Interactive complexity control and high-speed stereo matching
Creators: name: Roman, Gruia-Catalin
name: Laine, Andrew F.
name: Cox, Kenneth C.
Publisher: name: Columbia University
Year: 1988
Subjects: Medicine
Biomedical engineering

description: The authors are concerned with the development of a novel approach to edge-based stereo matching. In the context of an incremental matching strategy the authors have replaced the traditional hierarchical (coarse-fine) matching by an approach called complexity control based matching. The implementation of this method allows the user to select interactively features which (given the context provided by previous matches) are most likely to be matched successfully. The selection is done at the resolution of the original image and  utilizes a rich set of feature properties (e.g. edge strength, orientation, length, texture etc.), either alone or in logical combinations. Both feature-selection and feature-matching algorithms execute at real-time rates, and all interactions are via a stereo workstation.
Casimir-Polder repulsion: Polarizable atoms, cylinders, spheres, and ellipsoids
Creators: name: Milton, Kimball A.
name: Parashar, Prachi
name: Pourtolami, Nima
name: Brevik, Iver
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, the topic of Casimir repulsion has received a great deal of attention, largely because of the possibility of technological application. The general subject has a long history, going back to the self-repulsion of a conducting spherical shell and the repulsion between a perfect electric conductor and a perfect magnetic conductor. Recently it has been observed that repulsion can be achieved between ordinary conducting bodies, provided sufficient anisotropy is present. For example, an anisotropic polarizable atom can be repelled near an aperture in a conducting plate. Here we provide new examples of this effect, including the repulsion on such an atom moving on a trajectory nonintersecting a conducting cylinder; in contrast, such repulsion does not occur outside a sphere. Classically, repulsion does occur between a conducting ellipsoid placed in a uniform electric field and an electric dipole. The Casimir-Polder force between an anisotropic atom and an anisotropic dielectric semispace does not exhibit repulsion. The general systematics of repulsion are becoming clear.
description: 17 pages, 4 figures; new version has added references, some additional discussion, and slight corrections
THE HOLLOW VISCUS INJURIES IN BLUNT ABDOMINAL TRAUMA, A RETROSPECTIVE ASSESSMENT.
Creators: name: Dogjani, Agron
Publisher: name: Zenodo
Year: 2015
Subjects: HVI, BAT, Intestinal injuries, surgery

description: Introduction: BAT is one of the most common causes of morbidity in that all age groups. Early identification of traumatic hollow viscus injuries (THVI) has been and remains a challenge to all trauma surgeons, as early finding and evaluation of there, it present difficulties of different natures, even with technological advances is frightening for all surgeons because of morbidity and mortality that it carries. With all the different varieties of damage mechanisms, HVI of motor vehicle accidents (MVA) remains the leading cause1,2. The first reports date for HVI we must go back to 1899 by Geille, who reported that HVI had 11% incidence in a group of patients who had undergone BAT. There are studies that said that HVI recently ranked third overall in the standings intraabdominal injuries (IAI) in BAT3. Objectives: Identification of the mechanism of injury, the incoming data, the anatomical distribution of lesions, diagnostic methods, management, and gastrointestinal damage results from BAT. Methods: The study includes patients with BAT in a 2-years period, that were introduced in the UHT, who underwent evaluation, treatment, and management of gastrointestinal tract injury. It is a retrospective study, patients were analyzed in relation to the mechanism, time of presentation, in HdSt, anatomic localization of lesions, diagnostic methods, the tactics of treatment, complications, morbidity, and mortality... Results: Are taken into consideration about 21 (8%) patients out of 257 which is the total number of patients with BAT in the study who had damage to the HVI, they occupy 33% of cases treated with BAT street operators. The age distribution is such 70 years old range 5-years average 32.8, while such is distribution by age group; is 14 to 60 years old (62%) followed by more than 60 years old (14.2%) and finally by 0-14 years old (23.8%)... Conclusions: Early recognition of THVI from BAT is difficult, it's very important is their dangerousness be recognized because of its great potential complications affecting infection that gives directly to their morbidity and mortality. Keywords; HVI, BAT, Intestinal injuries, surgery
D8.4: Interim progress report: Public Software release and integration in external codes
Creators: name: Fabio Affinito
name: Joost VandeVondele
name: Alex Upton
Publisher: name: Zenodo
Year: 2021
Subjects: Deliverable
HPC
Research infrastructure

description: Work Package 8 of PRACE-6IP successfully runs ten projects developing forward-looking software solutions. Eight of these projects started in April 2019, whilst two projects started in January 2020, after selection in a second call for proposals. This deliverable reports on the public release of production quality software by all projects. This deliverable follows-up on the earlier deliverable D8.3, which documented the prototype releases, their availability on GitHub and similar services, and information on the use of a modern development infrastructure, including version control, automated continuous integration (CI), and standard documentation formats. This deliverable furthermore describes the outreach the projects have done, how they interacted with European actors such as CoEs and EuroCC, and how they have integrated their efforts in community codes, providing availability of these results to users of HPC infrastructure. Each of the projects reports an outlook for pre-exascale and projections of benchmark performance. Additional developments and results require the availability of the node architectures of the European pre-exascale systems themselves and are planned for the remaining period. All projects have made good progress towards or exceeded the project goals so far, and some impressive results have been delivered. The second phase of this Work Package can be considered successful.
Deformation of extremal metrics, complex manifolds and the relative Futaki invariant
Creators: name: Rollin, Yann
name: Simanca, Santiago R.
name: Tipler, Carl
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Let (X,Ω) be a closed polarized complex manifold, g be an extremal metric on X that represents the Kähler class Ω, and G be a compact connected subgroup of the isometry group Isom(X,g). Assume that the Futaki invariant relative to G is nondegenerate at g. Consider a smooth family $(M \to B)$ of polarized complex deformations of (X,Ω)\simeq (M_0,Θ_0) provided with a holomorphic action of G with trivial action on B. Then for every t\in B sufficiently small, there exists an h^{1,1}(X)-dimensional family of extremal Kaehler metrics on M_t whose Kähler classes are arbitrarily close to Θ_t. We apply this deformation theory to show that certain complex deformations of the Mukai-Umemura 3-fold admit Kaehler-Einstein metrics.
description: 22 pages. A mistake concerning the application of our main result to the Mukai-Umemura 3-fold and its deformations has been corrected. The title has been changed according the the referee's request
Additional file 3 of Factors contributing to mitogenome size variation and a recurrent intracellular DNA transfer in Melastoma
Creators: name: Zhou, Shuaixi
name: Zhi, Xueke
name: Yu, Runxian
name: Liu, Ying
name: Zhou, Renchao
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Table S3. Intron contents in the mitogenomes of three Melastoma species.