cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spatially Covariant Lesion Segmentation
Creators: name: Zhang, Hang
name: Wang, Rongguang
name: Zhang, Jinwei
name: Liu, Dongdong
name: Li, Chao
name: Li, Jiahao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Compared to natural images, medical images usually show stronger visual patterns and therefore this adds flexibility and elasticity to resource-limited clinical applications by injecting proper priors into neural networks. In this paper, we propose spatially covariant pixel-aligned classifier (SCP) to improve the computational efficiency and meantime maintain or increase accuracy for lesion segmentation. SCP relaxes the spatial invariance constraint imposed by convolutional operations and optimizes an underlying implicit function that maps image coordinates to network weights, the parameters of which are obtained along with the backbone network training and later used for generating network weights to capture spatially covariant contextual information. We demonstrate the effectiveness and efficiency of the proposed SCP using two lesion segmentation tasks from different imaging modalities: white matter hyperintensity segmentation in magnetic resonance imaging and liver tumor segmentation in contrast-enhanced abdominal computerized tomography. The network using SCP has achieved 23.8%, 64.9% and 74.7% reduction in GPU memory usage, FLOPs, and network size with similar or better accuracy for lesion segmentation.
description: 9 pages, 7 figures, and 2 tables
Light dark matter and $Z'$ dark force at colliders
Creators: name: An, Haipeng
name: Ji, Xiangdong
name: Wang, Lian-Tao
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Light Dark Matter, $<10$ GeV, with sizable direct detection rate is an interesting and less explored scenario. Collider searches can be very powerful, such as through the channel in which a pair of dark matter particle are produced in association with a jet. It is a generic possibility that the mediator of the interaction between DM and the nucleus will also be accessible at the Tevatron and the LHC. Therefore, collider search of the mediator can provide a more comprehensive probe of the dark matter and its interactions. In this article, to demonstrate the complementarity of these two approaches, we focus on the possibility of the mediator being a new $U(1)'$ gauge boson, which is probably the simplest model which allows a large direct detection cross section for a light dark matter candidate. We combine searches in the monojet+MET channel and dijet resonance search for the mediator. We find that for the mass of $Z'$ between 250 GeV and 4 TeV, resonance searches at the colliders provide stronger constraints on this model than the monojet+MET searches.
description: 23 pages and 14 figures
Chaos in the Mass-Deformed ABJM Model
Creators: name: Kürkçüoǧlu, S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Chaotic dynamics of the mass deformed ABJM model is explored. To do so, we consider spatially uniform fields and obtain a family of reduced effective Lagrangians by tracing over ansatz configurations involving fuzzy two-spheres with collective time dependence. We examine how the largest Lyapunov exponent, $λ_L$, changes as a function of $E/N^2$, where $N$ is the matrix size. In particular, we inspect the temperature dependence of $λ_L$ and present upper bounds on the temperature above which $λ_L$ values comply with the MSS bound, $ λ_L \leq 2 πT $, and below which it will eventually be not obeyed.
description: 9 pages, To be published in Particles, Fields and Topology: Celebrating A.P. Balachandran, a Festschrift volume for A.P. Balachandran (World Scientific Publishing Co., Singapore). arXiv admin note: substantial text overlap with arXiv:2203.08240
Analytical ground state for the Jaynes-Cummings model with the ultrastrong coupling
Creators: name: Zhang, Yuanwei
name: Chen, Gang
name: Yu, Lixian
name: Liang, Qifeng
name: Liang, J. -Q.
name: Jia, Suotang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We present a generalized variational method to analytically obtain the ground-state properties of the unsolvable Jaynes-Cummings model with the ultrastrong coupling. An explicit expression for the ground-state energy, which agrees well with the numerical simulation in a wide range of the experimental parameters, is given. In particular, the introduced method can successfully solve this Jaynes-Cummings model with the positive detuning (the atomic resonant level is larger than the photon frequency), which can not be treated in the adiabatical approximation and the generalized rotating-wave approximation. Finally, we also demonstrate analytically how to control the mean photon number by means of the current experimental parameters including the photon frequency, the coupling strength, and especially the atomic resonant level.
description: 4 figures
The Debye temperature of sigma-phase Fe-Mo compounds as determined with Mössbauer spectroscopy
Creators: name: Cieslak, J.
name: Dubiel, S. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Debye temperature, T_D, of sigma-phase Fe_(100-x)Mo_x compounds with 47 < x < 56.7 was determined from the temperature dependence of the centre shift of Mössbauer spectra recorded in the temperature range of 80 - 300 K. Its compositional dependence shows a weak increase with x whose rate, in a linear approximation, is equal to 3.1 K/at%. The results are compared with the corresponding ones found previously for the sigma-phase in Fe-Cr and Fe-V compounds.
description: 4 pages, 3 figures
Easy-plane spin Hall oscillator
Creators: name: Montoya, Eric Arturo
name: Khan, Amanatullah
name: Safranski, Christopher
name: Smith, Andrew
name: Krivorotov, Ilya N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin Hall oscillators (SHOs) based on bilayers of a ferromagnet (FM) and a non-magnetic heavy metal (HM) are electrically tunable nanoscale microwave signal generators. Achieving high output power in SHOs requires driving large-amplitude magnetization dynamics by a direct spin Hall current. The maximum possible amplitude of such oscillations with the precession cone angle nearing $90^\circ$ is predicted for FM layers with easy-plane magnetic anisotropy and spin Hall current polarization perpendicular to the easy plane. While many FMs exhibit natural easy-plane anisotropy in the FM film plane, the spin Hall current in a HM|FM bilayer is polarized in this plane and thus cannot drive large-amplitude magneto-dynamics. Here we present a new type of SHO engineered to have the easy-plane anisotropy oriented normal to the film plane, enabling large-amplitude easy-plane dynamics driven by spin Hall current. Our experiments and micromagnetic simulations demonstrate that the desired easy-plane anisotropy can be achieved by tuning the magnetic shape anisotropy and perpendicular magnetic anisotropy in a nanowire SHO, leading to a significant enhancement of the generated microwave power. The easy-plane SHO experimentally demonstrated here is an ideal candidate for realization of a spintronic spiking neuron. Our results provide a new approach to design of high-power SHOs for wireless communications, neuromorphic computing, and microwave assisted magnetic recording.
description: Main: 12 pages, 6 figures. Supplementary Material: 5 pages, 6 figures
Polarization control of multiply-scattered light through random media by wavefront shaping
Creators: name: Guan, Yefeng
name: Katz, Ori
name: Small, Eran
name: Zhou, Jianying
name: Silberberg, Yaron
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show that the polarization state of coherent light propagating through an optically thick multiple-scattering medium, can be controlled by wavefront shaping, i.e. by controlling only the spatial phase of the incoming field with a spatial light modulator. Any polarization state of light at any spatial position behind the scattering medium can be attained with this technique. Thus, transforming the random medium to an arbitrary optical polarization component becomes possible.
Guidelines for the evaluation and selection of aerial and satellite imagery for land planning and management along the eastern slopes in Alberta
Creators: name: Schmidt, Bradley J. (Bradley John)
Publisher: name: University of Calgary
Year: 1986
Subjects: subject: TA 592.6 C32 A473 1987
subject: Land use, Rural - Planning - Remote sensing - Alberta
subject: Aerial photogrammetry

description: Bibliography: p. 126-133.
description: The effective management of the land within the Eastern Slopes Region in Alberta requires a fast and economical methord of collecting pertinent biophysical (ecological) information. Remotely sensed imagery is evaluated in this study for its relative usefulness in collecting this information. Imagery selected for evaluation included panchromatic, black and white infared, normal colour, and colour infared photography; as well as synthetic aperature radar (SAR) and multispectral imagery in both analogue and digital form. The selected imagery was evaluated within the framework of an integrated, multi-stage, biophysically based, remote sensing legend system. This legend system provides tor the classification of regional zones, landforms, surtace cover, slope, soils, and internal drainage. evaluation procedure involved both a qualitative and a quantitative analysis. This methodolgy was utilized to create a series of guidelines for selecting imagery to be used with each ot the specified legend components. The study demonstrates that an effective methodology can be employed for the evaluation and selection of aerial and satellite imagery for land planning and management along Alberta's Eastern Slopes. The results of the investigation also indicate that a high degree of reliability can be maintained for obtaining the specified biophysical information, by employing the study approach. More specifically, the results clearly demonstrate that there are significant differences in the value of the various images examined for gathering information on the individual legend components. By employing the derived methodology and the accompanying image selection guidelines, land planners and managers should be able to choose the most optimal imagery for their biophysical data gathering needs. This in turn will result in a more effective and efficient use of remotely sensed imagery in the land planning and management process.
Late Post Pancreatectomy Haemorrhage. Risk Factors and Modern Management
Creators: name: Sanjay, Pandanaboyana
name: Fawzi, Ali
name: Fulke, Jennifer L
name: Kulli, Christoph
name: Tait, Iain S
name: Zealley, Iain A
name: Polignano, Francesco M
Publisher: name: JOP. Journal of the Pancreas
Year: 2010
Subjects: Hemorrhage; Pancreatectomy; Risk Factors

description: Context Current management of late post-pancreatectomy haemorrhage in a university hospital. Objective Haemorrhage after pancreaticoduodenectomy is a serious complication. We report on risk factors and outcome following management by radiological intervention. Setting Tertiary care centre in Scotland. Subjects Sixty-seven consecutive patients who underwent pancreaticoduodenectomy. Methods All pancreaticoduodenectomies over a 3-year period were reviewed. International Study Group on Pancreatic Surgery (ISGPS) definition of post-pancreatectomy haemorrhage was used. Main outcome measures Endpoints were incidence of haemorrhage, pancreaticojejunal anastomosis leak, methicillin-resistant Staphylococcus aureus (MRSA) infection and mortality. Results Seven patients (10.4%) developed post-pancreatectomy haemorrhage out of 67 pancreaticoduodenectomies. Median age was 71 years. All post-pancreatectomy haemorrhage were late onset (median 23 days; range: 3-35 days), extraluminal and ISGPS grade C. Post-pancreatectomy haemorrhage arose from hepatic artery (n=4), superior mesenteric artery (n=1), jejunal artery (n=1), and splenic artery (n=1). Angiographic treatment was successful in all patients by embolisation (n=5) or stent grafting (n=2). Pancreatic fistula rate was similar in post-pancreatectomy haemorrhage and "no-haemorrhage" groups (57.1% vs. 40.0%; P=0.440); MRSA infection was significantly higher in post-pancreatectomy haemorrhage group (57.1% vs. 16.7%; P=0.030). Mortality from post-pancreatectomy haemorrhage despite successful haemostasis was 42.9%. Univariate and multivariate analysis identified MRSA infection as a risk factor for post-pancreatectomy haemorrhage. Conclusion CT angiogram followed by conventional catheter angiography is effective for treatment of late extraluminal post-pancreatectomy haemorrhage. MRSA infection in the abdominal drain fluid increases its risk and therefore aggressive treatment of MRSA and high index of suspicion are indicated.

Image: Digitally subtracted angiographic image showing occlusive embolisation coils placed in the splenic artery.
description: JOP. Journal of the Pancreas, Vol 11, No 3 (2010): May - p. 199-298
Impact of Pancreatic Leaks on Survival Following Pancreaticoduodenectomy
Creators: name: Ausania, Fabio
name: Cook, Natalie
name: Jamieson, Neville
name: Huguet, Emanuel
name: Jah, Asif
name: Praseedom, Raaj
Publisher: name: JOP. Journal of the Pancreas
Year: 2010
Subjects: Fistula; Pancreatic Neoplasms; Pancreaticoduodenectomy; Prognosis; Survival

description: Context Pancreatic leak following pancreaticoduodenectomy has a major impact on postoperative mortality. However, it is not clear whether pancreatic leaks affect long term survival in patients with pancreatic ductal adenocarcinoma. Objective The aim of this study is to compare the long term outcome in patients who underwent pancreaticoduodenectomy, with and without postoperative pancreatic leak. Patients All 133 patients who underwent a pancreaticoduodenectomy at the HepatoPancreatoBiliary Unit, Addenbrooke’s Hospital, Cambridge, between June 2002 and June 2007 were identified from a prospectively held database. The study was restricted to 47 patients who had a confirmed diagnosis of pancreatic ductal adenocarcinoma. Setting Pancreatic leak was defined as drain fluid amylase more than three times the serum level for more than 3 days post operatively. Main outcome measure Long term survival of patients with and without leaks were compared using Kaplan-Meier curves and significance was measured using the log-rank test. Results Median follow-up was 30.8 months. The median actuarial survival of all ductal adenocarcinoma patients was 19 months. Pancreatic leaks occurred in 9 patients (19.1%). There were no significant differences in the overall survival or presence of recurrence between the two groups. Conclusions Pancreatic leak following pancreaticoduodenectomy does not appear to impact on long-term outcome of patients with pancreatic ductal adenocarcinoma.

Image: Kaplan-Meier curve showing no significant difference in the overall survival following pancreaticoduodenectomy between 9 patients with pancreatic leaks and 38 patients without pancreatic leaks.
description: JOP. Journal of the Pancreas, Vol 11, No 3 (2010): May - p. 199-298
source code, data, surface plot
Creators: name: Ge, Xiuting
Publisher: name: figshare
Year: 2023
Subjects: Automotive safety engineering

description: Static analysis tools (SATs) are widely applied to detect defects in software projects. However, SATs are overshadowed by a large number of unactionable warnings, which severely reduces the usability of SATs. To address this problem, the existing approaches commonly use machine learning (ML) techniques for actionable warning identification (AWI). For these ML-based AWI approaches, the warning feature determination is one of the most critical parts to effectively identify actionable warnings. To eliminate redundant and irrelevant warning features, ML-based AWI approaches usually incorporate feature selection to determine the feature subset by calculating the importance or correlation of features with warning labels. Nevertheless, warning labels are not always available directly in practice. Thus, it is vital and challenging to select warning features for ML-based AWI approaches when warning labels are absent. To address the above problem, we propose an UNsupervised fEAture SElection approach called UNEASE for ML-based AWI. (1) UNEASE first performs the feature clustering to gather warning features into clusters, where the number of clusters is automatically determined and features in the same cluster are considered redundant. (2) Subsequently, UNEASE performs the feature ranking to sort warning features in each cluster with three newly proposed ranking strategies and selects the top-ranked warning feature from each cluster. Based on the selected features, we train a ML classifier to identify actionable warnings. We conduct experiments on nine large-scale and real-world warning datasets. Compare UNEASE with seven typical feature selection techniques, the experimental results show that while taking a low cost to perform the feature selection and maintaining a low redundancy rate in the selected warning features, UNEASE still obtains the top-ranked AUC.
Secuencia didáctica para docentes #AntologíaNarrativaTransmedia.
Creators: name: Montaner Henríquez, Angélica
Publisher: name: figshare
Year: 2022
Subjects: subject: 200102 Communication Technology and Digital Media Studies
subject: FOS: Media and communications
subject: Education

description: La secuencia didáctica (SD) #AntologíaNarrativaTransmedia corresponde al principal instrumento de recogida de datos de la investigación Proceso de interpretación literaria de cuatro docentes de Lengua y Literatura, a través de la producción de narrativas transmedia, en el marco de una secuencia didáctica, la cual dio origen al estudio en el que se inserta esta SD. Su planificación se enmarca en el Currículo Escolar chileno, específicamente en la asignatura de Lengua y Literatura, para el nivel de Educación Secundaria, abarcando tanto las habilidades de alfabetización digital, como la habilidad de interpretación literaria. Está dirigida a docentes de Lengua y Literatura y fue ejecutada por cuatro profesoras de esta especialidad durante la pandemia. Esto originó que los encuentros planteados en la secuencia se realizaran virtualmente.
Towards a Feminist Digital Ethnography: Navigating Identity, Belonging and In-Betweenness at the Frontier of Online and Offline Spaces
Creators: name: Brudvig, Ingrid
Publisher: name: Zenodo
Year: 2021
Subjects: Digital feminist ethnography
ESCALATOR
SADiLaR
Women in technology
South Africa

description: This presentation was created for the EMPOWER track of the ESCALATOR programme organised by the South African Centre for Digital Language Resources (SADiLaR). ESCALATOR aims to support the development of an inclusive and active community of practice in Digital Humanities and Computational Social Sciences in South Africa. For more information see https://escalator.sadilar.org/champions/empower. The recording of the presentation is available on YouTube at https://youtu.be/BRjrFPkRMck
A neutral atom frequency reference in the deep UV with 10^(-15) range uncertainty
Creators: name: McFerran, J. J.
name: Yi, L.
name: Mejri, S.
name: Di Manno, S.
name: Zhang, W.
name: Guéna, J.
name: Coq, Y. Le
name: Bize, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present an assessment of the (6s^{2})1S0 -> (6s7s)3P0 clock transition frequency in 199Hg with an uncertainty reduction of nearly three orders of magnitude and demonstrate an atomic quality factor, Q, of ~10^(14). The 199Hg atoms are confined in a vertical lattice trap with light at the newly determined magic wavelength of 362.5697 +/-0.0011 nm and at a lattice depth of 20Er. The atoms are loaded from a single stage magneto-optical trap with cooling light at 253.7 nm. The high Q factor is obtained with an 80 ms Rabi pulse at 265.6 nm. The frequency of the clock transition is found to be 1 128 575 290 808 162.0 +/-6.4 (sys.) +/-0.3 (stat.) Hz (fractional uncertainty = 5.7x10^(-15)). Neither an atom number nor second order Zeeman dependence have yet to be detected. Only three laser wavelengths are used for the cooling, lattice trapping, probing and detection.
description: 5 pages, 6 figures
Light hadron, Charmonium(-like) and Bottomonium(-like) states
Creators: name: Li, Hai-Bo
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Hadron physics represents the study of strongly interacting matter in all its manifestations and the understanding of its properties and interactions. The interest on this field has been revitalized by the discovery of new light hadrons, charmonium- and bottomonium-like states. I review the most recent experimental results from different experiments.
description: Presented at Lepton-Photon 2011, Mumbai, India; 21 pages, 18 figures; add more references; some correction
B-Mannoside mannohydrolase and the mobilization of the endosperm cell wall of Lactuca sativa L. CV. Grand Rapids
Creators: name: Ouellette, Francois Benoit Francis, 1960-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: QK 740 O89 1986
subject: Germination
subject: Growth promoting substances
subject: Hydrolases
subject: Lettuce

description: Bibliography: p. 139-149.
Random perfect matchings in regular graphs
Creators: name: Granet, Bertille
name: Joos, Felix
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We prove that in all regular robust expanders $G$ every edge is asymptotically equally likely contained in a uniformly chosen perfect matching $M$. We also show that given any fixed matching or spanning regular graph $N$ in $G$, the random variable $|M\cap E(N)|$ is approximately Poisson distributed. This in particular confirms a conjecture and a question due to Spiro and Surya, and complements results due to Kahn and Kim who proved that in a regular graph every vertex is asymptotically equally likely contained in a uniformly chosen matching. Our proofs rely on the switching method and the fact that simple random walks mix rapidly in robust expanders.
description: 8 pages; final version, to appear in Random Structures & Algorithms
Bubble oscillations and motion under vibration
Creators: name: O'Hern, Tim
name: Shelden, Bion
name: Torczynski, John
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Bubbles under vibration can behave in unusual ways, e.g., moving downward against the force of buoyancy. While the bubble downward motion due to the Bjerknes force is well known at acoustic frequencies close to the bubble resonant frequency, these experiments demonstrate that these effects can be observed at relatively low frequencies as well. Experiments were performed in a thin, quasi-two-dimensional rectangular acrylic box partially filled with 20-cSt PDMS silicone oil with overlying ambient air. The apparatus was subjected to sinusoidal axial vibration that produced breakup of the gas-liquid free surface, producing liquid jets into the air, droplets pinching off from these jets, gas cavities in the liquid from impacts of these droplets, and bubble transport below the interface. Vibration conditions for the attached videos are 280 Hz frequency, 15 g acceleration, and 94 micron peak-to-peak displacement. Behaviors shown in the videos include the following. 1. Free surface breakup into jets and droplets, and formation of bubbles under the free surface. 2. Bubbles thus generated moving downward in the cell. 3. Bubbles attracted to the first bubble deep in the cell and eventually merging to form a large bubble at the base of the cell. 4. Bubble cluster at the base of the cell merging to form a larger bubble, which stabilizes at a levitated location below the free surface and acts to damp out the surface breakup. 5. The levitated bubble interface and its breakup are similar to the free surface breakup into jets and droplets, but the jets in the bubble are facing downward. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000.
description: Attached videos are low and high resolution versions of the video shown at the APS DFD Gallery of Fluid Motion 2011
High-risk infants with transient neurodevelopmental problems: a follow-up study of educational and psychological skills at school entry
Creators: name: Pain, Karen J. (Karen Judith), 1958-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: RJ 496 L4 P33 1986
subject: Learning disabilities
subject: Developmental neurology
subject: Psychological tests for children

description: Bibliography: p. 141-155.
Autobiographical learning for student engagement in digital storytelling
Creators: name: Livingston, Candice
Publisher: name: Zenodo
Year: 2021
Subjects: digital storytelling
SADiLaR
autobiographical learning
digital humanities

description: This presentation was created for the EMPOWER track of the ESCALATOR programme organised by the South African Centre for Digital Language Resources (SADiLaR). ESCALATOR aims to support the development of an inclusive and active community of practice in Digital Humanities and Computational Social Sciences in South Africa. For more information see https://escalator.sadilar.org/champions/empower. The recording of the presentation is available on YouTube at https://youtu.be/rakXAc4VF6E
Central support for triangulated categories
Creators: name: Krause, Henning
Publisher: name: arXiv
Year: 2023
Subjects: subject: Category Theory (math.CT)
subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 18G80

description: For any essentially small triangulated category the centre of its lattice of thick subcategories is introduced; it is a spatial frame and yields a notion of central support. A relative version of this centre recovers the support theory for tensor triangulated categories and provides a universal notion of cohomological support. Along the way we establish Mayer-Vietoris sequences for pairs of commuting subcategories.
description: 18 pages
Eigenvalues of the QCD Dirac matrix with improved staggered quarks in the continuum limit
Creators: name: Kaczmarek, Olaf
name: Shanker, Ravi
name: Sharma, Sayantan
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the eigenmodes of the Highly Improved Staggered Quark (HISQ) matrix near the chiral crossover transition in QCD with $2+1$ flavors with the aim to gain more insights into its temperature dependence. On performing the continuum extrapolation, we do not observe any gap opening up in the infrared part of the eigenvalue density of the QCD Dirac operator; instead we observe a peak. The existence of the peak and oscillations of the infrared eigenmodes can be understood in terms of an interacting ensemble of instantons. From the properties of the continuum extrapolated eigenspectrum we further show that the anomalous $U_A(1)$ part of the chiral symmetry is not effectively restored simultaneously along with its non-singlet counterpart. We provide an explanation for this observation, further showing interesting connections between the anomalous $U_A(1)$ restoration and the change in the infrared part of the eigenvalue distribution.
description: v2: Version to be published in Phys. Rev. D
Gas Diffusion in Cement Pastes: An Analysis using a Fluctuating Diffusivity Model
Creators: name: Nakai, Fumiaki
name: Ishida, Takato
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This work propose an application of the concept of fluctuating diffusivity to the diffusion of gas molecules in cementitious materials, particularly through a two-state fluctuating diffusivity (2SFD) model. The 2SFD model is utilized to investigate the diffusion of oxygen in cement pastes. The analysis provides a reasonable description of the diffusion coefficient of oxygen in cement pastes, and highlights the presence of non-Gaussian diffusion, which can be attributed to the heterogeneous microstructure. The presence of non-Gaussianity in the probability density of the molecule's displacement, characterized by heavier tails than those of the Gaussian distribution, may have a significant impact on the durability assessments of concrete structures.
description: 29 pages, 9 figures
Secuencia didáctica para docentes #AntologíaNarrativaTransmedia.pdf
Creators: name: Montaner Henríquez, Angélica
Publisher: name: figshare
Year: 2022
Subjects: subject: 200102 Communication Technology and Digital Media Studies
subject: FOS: Media and communications
subject: Education

description: La secuencia didáctica (SD) #AntologíaNarrativaTransmedia corresponde al principal instrumento de recogida de datos de la investigación Proceso de interpretación literaria de cuatro docentes de Lengua y Literatura, a través de la producción de narrativas transmedia, en el marco de una secuencia didáctica[1], la cual dio origen al estudio en el que se inserta esta SD. Su planificación se enmarca en el Currículo Escolar chileno, específicamente en la asignatura de Lengua y Literatura, para el nivel de Educación Secundaria, abarcando tanto las habilidades de alfabetización digital, como la habilidad de interpretación literaria. Está dirigida a docentes de Lengua y Literatura y fue ejecutada por cuatro profesoras de esta especialidad durante la pandemia. Esto originó que los encuentros planteados en la secuencia se realizaran virtualmente.
Mesopancreas: Myth or Reality?
Creators: name: Agrawal, Manish K
name: Thakur, Dilip Singh
name: Somashekar, Uday
name: Chandrakar, Shiv Kumar
name: Sharma, Dhananjaya
Publisher: name: JOP. Journal of the Pancreas
Year: 2010
Subjects: Carcinoma, Pancreatic Ductal; Pancreaticoduodenectomy

description: Context A recently published study hypothesized the concept of ‘mesopancreas’, defining it as a firm, well-vascularized structure extending from the posterior surface of the pancreatic head to behind the mesenteric vessels. Objective To verify and define mesopancreas from resection specimens obtained from fresh cadavers. Design Postmortem anatomical-pathological study. Setting Department of Surgery in conjunction with the Departments of Forensic Medicine and Pathology, Government Medical College and Hospital, Jabalpur, MP, India. Participants Twenty fresh adult cadavers without any intra-abdominal injury or gross intra-abdominal pathology. Interventions Specimens containing the entire duodenum, pancreatic head and neck, gallbladder, cystic duct, common bile duct, superior mesenteric vessels, inferior vena cava and aorta were removed en-bloc. Gross and histopathological examinations of the specimens were carried out. Main outcome measures To look for a fibrous sheath or fascia around the retropancreatic structure purported to be a mesopancreas. Results Loose areolar tissue, adipose tissue, peripheral nerve, nerve plexus, lymphatic and capillaries were found in the retropancreatic tissue, extending from the head, neck and uncinate process of pancreas to the aorto-caval groove but no fibrous sheath or fascia was found around these structures. Conclusions The concept of ‘mesopancreas’ is anatomically unfounded.

Image: Anterior view of the resected specimen.
description: JOP. Journal of the Pancreas, Vol 11, No 3 (2010): May - p. 199-298
Common Methods of Stellar Spectra Analysis and their Support in Virtual Observatory
Creators: name: Škoda, Petr
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The proper scientific analysis of a large amount of stellar spectra requires certain capabilities of the analysing tool (e.g. precise semi-automatic fitting for normalisation of the continuum or line-list assisted measurement of spectral lines) as well as flexible list-driven datafile handling. While most astronomical legacy packages comprise powerful analysing and data management features allowing rapid processing of quite complex data, current VO tools are lacking support of even basic capabilities commonly used in stellar spectroscopy. Especially the high resolution optical spectroscopy of stars with rapid line profile variations or of those with complicated emission profiles benefits from a number of specific methods unsupported in todays Virtual Observatory (VO) tools and even lacking definition in VO spectral protocols. In our contribution we identify these techniques, describe their possible implementations and finally give a short overview of several VO-compatible tools emphasising their deficiencies and comparing with the capabilities of common legacy packages.
description: Paper presented as an invited lecture at the EURO-VO workshop Astronomical Spectroscopy and Virtual Observatory, ESAC, Spain, March 2007
Towards Learned Emulation of Interannual Water Isotopologue Variations in General Circulation Models
Creators: name: Wider, Jonathan
name: Kruse, Jakob
name: Weitzel, Nils
name: Bühler, Janica C.
name: Köthe, Ullrich
name: Rehfeld, Kira
Publisher: name: arXiv
Year: 2023
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Simulating abundances of stable water isotopologues, i.e. molecules differing in their isotopic composition, within climate models allows for comparisons with proxy data and, thus, for testing hypotheses about past climate and validating climate models under varying climatic conditions. However, many models are run without explicitly simulating water isotopologues. We investigate the possibility to replace the explicit physics-based simulation of oxygen isotopic composition in precipitation using machine learning methods. These methods estimate isotopic composition at each time step for given fields of surface temperature and precipitation amount. We implement convolutional neural networks (CNNs) based on the successful UNet architecture and test whether a spherical network architecture outperforms the naive approach of treating Earth's latitude-longitude grid as a flat image. Conducting a case study on a last millennium run with the iHadCM3 climate model, we find that roughly 40\% of the temporal variance in the isotopic composition is explained by the emulations on interannual and monthly timescale, with spatially varying emulation quality. A modified version of the standard UNet architecture for flat images yields results that are equally good as the predictions by the spherical CNN. We test generalization to last millennium runs of other climate models and find that while the tested deep learning methods yield the best results on iHadCM3 data, the performance drops when predicting on other models and is comparable to simple pixel-wise linear regression. An extended choice of predictor variables and improving the robustness of learned climate--oxygen isotope relationships should be explored in future work.
Algorithms for Modifying Recurrence Relations of Orthogonal Polynomial and Rational Functions when Changing the Discrete Inner Product
Creators: name: Van Barel, Marc
name: Van Buggenhout, Niel
name: Vandebril, Raf
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 15A22, 65F18, 65Q30, 33C45, 41A20, 41A10

description: Often, polynomials or rational functions, orthogonal for a particular inner product are desired. In practical numerical algorithms these polynomials are not constructed, but instead the associated recurrence relations are computed. Moreover, also typically the inner product is changed to a discrete inner product, which is the finite sum of weighted functions evaluated in specific nodes. For particular applications it is beneficial to have an efficient procedure to update the recurrence relations when adding or removing nodes from the inner product. The construction of the recurrence relations is equivalent to computing a structured matrix (polynomial) or pencil (rational) having prescribed spectral properties. Hence the solution of this problem is often referred to as solving an Inverse Eigenvalue Problem. In Van Buggenhout et al. (2022) we proposed updating techniques to add nodes to the inner product while efficiently updating the recurrences. To complete this study we present in this article manners to efficiently downdate the recurrences when removing nodes from the inner product. The link between removing nodes and the QR algorithm to deflate eigenvalues is exploited to develop efficient algorithms. We will base ourselves on the perfect shift strategy and develop algorithms, both for the polynomial case and the rational function setting. Numerical experiments validate our approach.
description: 45 pages, 19 figures
A Tight Lower Bound on the Controllability of Networks with Multiple Leaders
Creators: name: Yazicioglu, Ahmet Yasin
name: Abbas, Waseem
name: Egerstedt, Magnus
Publisher: name: arXiv
Year: 2012
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In this paper we study the controllability of networked systems with static network topologies using tools from algebraic graph theory. Each agent in the network acts in a decentralized fashion by updating its state in accordance with a nearest-neighbor averaging rule, known as the consensus dynamics. In order to control the system, external control inputs are injected into the so called leader nodes, and the influence is propagated throughout the network. Our main result is a tight topological lower bound on the rank of the controllability matrix for such systems with arbitrary network topologies and possibly multiple leaders.
Commentary on rainbow-ladder truncation for excited states and exotics
Creators: name: Qin, Si-xue
name: Chang, Lei
name: Liu, Yu-xin
name: Roberts, Craig D.
name: Wilson, David J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Ground-state, radially-excited and exotic scalar-, vector- and flavoured-pseudoscalar-mesons are studied in rainbow-ladder truncation using an interaction kernel that is consonant with modern DSE- and lattice-QCD results. The inability of this truncation to provide realistic predictions for the masses of excited- and exotic-states is confirmed and explained. On the other hand, its application does provide information that is potentially useful in proceeding beyond this leading-order truncation, e.g.: assisting with development of projection techniques that ease the computation of excited state properties; placing qualitative constraints on the long-range behaviour of the interaction kernel; and highlighting and illustrating some features of hadron observables that do not depend on details of the dynamics.
description: 10 pages, 6 figures, 2 tables
Changes in nightmare frequency and nightmare distress after CPAP initiation in patients with obstructive sleep apnea syndrome
Creators: name: Schredl, Michael
name: Lüth, Katharina
name: Schmitt, Judith
Publisher: name: International Journal of Dream Research
Year: 2020

description: Nightmare frequency in patients with sleep-related breathing disorders is heightened compared to representative samples. In addition, several studies indicate that nightmares frequency decreases after initiating CPAP treatment. However, data are still scarce. The present study included 19 patients (11 male, 8 female, mean age: 60.53 ± 13.85 yrs.) with sleep-apnea syndrome (mean Respiratory Disturbance Index: 70.08 ± 21.95/hr.) who completed a retrospective eight-point nightmare frequency scale and a five-point nightmare distress scale twice within the context of another study. The first time point was prior to initiating CPAP in the sleep medical center and the second time point after about three to four months (elicited via telephone). Although nightmare distress was lower at t2, nightmare frequency was increased. Despite the limitations, e.g., no information about CPAP compliance, this paradox finding – as nightmare frequency and nightmare distress are inter-related - indicates that sleep-related parameters, e.g., oxygen desaturations, apnea-related arousal, might not explain totally the inter-individual differences in nightmares frequency and nightmare distress in CPAP-treated sleep apnea patients. As a considerable number of patients still suffered from nightmares after CPAP initiation and should receive treatment, further research on nightmares in this patient group seems desirable.
description: International Journal of Dream Research, Vol 13, No 2 (October 2020)
Concept Relation Discovery and Innovation Enabling Technology (CORDIET)
Creators: name: Poelmans, Jonas
name: Elzinga, Paul
name: Neznanov, Alexey
name: Viaene, Stijn
name: Kuznetsov, Sergei O.
name: Ignatov, Dmitry
name: Dedene, Guido
Publisher: name: arXiv
Year: 2012
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: H.2.8; H.3.1; I.2.6
subject: 68T05

description: Concept Relation Discovery and Innovation Enabling Technology (CORDIET), is a toolbox for gaining new knowledge from unstructured text data. At the core of CORDIET is the C-K theory which captures the essential elements of innovation. The tool uses Formal Concept Analysis (FCA), Emergent Self Organizing Maps (ESOM) and Hidden Markov Models (HMM) as main artifacts in the analysis process. The user can define temporal, text mining and compound attributes. The text mining attributes are used to analyze the unstructured text in documents, the temporal attributes use these document's timestamps for analysis. The compound attributes are XML rules based on text mining and temporal attributes. The user can cluster objects with object-cluster rules and can chop the data in pieces with segmentation rules. The artifacts are optimized for efficient data analysis; object labels in the FCA lattice and ESOM map contain an URL on which the user can click to open the selected document.
Aspects of the military history of the British in eighteenth century India
Creators: name: Peers, Douglas Mark, 1960-
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: DS 442.5 P45 1986
subject: India - History, Military
subject: Great Britain. Army - Colonial forces - India
subject: India - History - 18th century
subject: Hastings, Warren, 1732-1818

description: Bibliography: p. 207-220.
Quantum error correction benchmarks for continuous weak parity measurements
Creators: name: Denhez, Gabrielle
name: Blais, Alexandre
name: Poulin, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present an experimental procedure to determine the usefulness of a measurement scheme for quantum error correction (QEC). A QEC scheme typically requires the ability to prepare entangled states, to carry out multi-qubit measurements, and to perform certain recovery operations conditioned on measurement outcomes. As a consequence, the experimental benchmark of a QEC scheme is a tall order because it requires the conjuncture of many elementary components. Our scheme opens the path to experimental benchmarks of individual components of QEC. Our numerical simulations show that certain parity measurements realized in circuit quantum electrodynamics are on the verge of being useful for QEC.
Stratigraphy, structure and metamorphism of Hadrynian strata in the southeastern Cariboo Mountains, B.C.
Creators: name: Pell, Jennifer
Publisher: name: University of Calgary
Year: 1984
Subjects: subject: QE 653 P44 1985
subject: Geology, Stratigraphic - Algonkian
subject: Geology - British Columbia - Cariboo Mountain region

description: Bibliography: p. 173-185.
description: Approximately 750 square kilometers of the Southeastern Cariboo Mountains near Thunder River were mapped in detail. The Semipelite-Amphibolite and Middle Marble divisions of the Horsethief Creek Group crop out in that region. They are overlain by the Upper elastic Division of the Horsethief Creek Group which grades upwards into Kaza Group lithologies. The Semipelite-Amphibolite Division is in excess of 500 m thick, with its base not exposed within the study area. The Middle Marble Division varies greatly in thickness, with a maximum thickness of 300 m. Approximately 3800 m of Kaza Group section were measured. The Kaza Group is overlain by slates of the Isaac Formation. Earlier workers correlated the Kaza Group with the basal division of the Horsethief Creek Group and with the Middle Miette Group. In light of the findings in the Thunder River area these correlations cannot all be correct. The Horsethief Creek Group underlies the grits of the Kaza Group. The Kaza Group is still considered correlative with the Middle Miette Group. Shales and carbonates overlie both the Middle Miette and Kaza groups. The strata in the Southeastern Cariboo Mountains were subjected to two major phases of folding during the Jura-Cretaceous Columbian Orogeny. The earliest phase resulted in west facing nappe structures. Fl folds are best developed at deep structural and stratigraphic levels. In the highest stratigraphic units studied there are no Fl folds or Sl schistosity developed. F2 folds are northwest plunging, upright to overturned and characterized by a crenulation cleavage. The F2 folds are conical but can only be recognized as such when mapped for large distances parallel to their trace. Metamorphism in the area ranges from sub-biotite to sillimanite grade. The metamorphic peak is synkinematic with D2. At the sillimanite isograd, sillimanite, kyanite and staurolite all coexist. Pressures and temperatures of 4.7 kb and 530 C were estimated for samples from the sillimanite isograd using garnet-biotite geothermometery and garnet-plagioclase geobarometry. The west-side-down North Thompson River Fault, separates the Cariboo Mountains from the Monashees to the east. Pressures and temperatures of 6.0kb and 655 C were estimated for samples from the sillimanite isograd in the Monashee Mountains. This pressure difference (in excess of 1kb) suggests that there is approximately 4 km of vertical displacement on the North Thompson River Fault.