cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Observations of Post-flare Plasma Dynamics during an M1.0 Flare in AR11093 by SDO/AIA
Creators: name: Srivastava, Abhishek K.
name: Murawski, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We observe the motion of cool and hot plasma in a multi-stranded post flare loop system that evolved in the decay phase of a two ribbon M1.0 class flare in AR 11093 on 7 August 2010 using SDO/AIA 304 Å and 171 Å filters. The moving intensity feature and its reflected counterpart are observed in the loop system at multi-temperature. The observed hot counterpart of the plasma that probably envelopes the cool confined plasma, moves comparatively faster ($\sim$34 km s$^{-1}$) to the later (29 km s$^{-1}$) in form of the spreaded intensity feature. The propagating plasma and intensity reflect from the region of another footpoint of the loop. The subsonic speed of the moving plasma and associated intensity feature may be most likely evolved in the post flare loop system through impulsive flare heating processes. Complementing our observations of moving multi-temperature intensity features in the post flare loop system and its reflection, we also attempt to solve two-dimensional ideal magnetohydrodynamic equations numerically using the VAL-IIIC atmosphere as an initial condition to simulate the observed plasma dynamics. We consider a localized thermal pulse impulsively generated near one footpoint of the loop system during the flare processes, which is launched along the magnetic field lines at the solar chromosphere. The pulse steepens into a slow shock at higher altitudes while moving along this loop system, which triggers plasma perturbations that closely exhibit the observed plasma dynamics.
description: 23 Pages, 4 Figures, The Astrophysical Journal (ApJ)
MOESM4 of Influence of UGT1A1 polymorphisms on the outcome of acute myeloid leukemia patients treated with cytarabine-base regimens
Creators: name: Chen, Peng
name: Zhu, Ke-Wei
name: Zhang, Dao-Yu
name: Yan, Han
name: Liu, Han
name: Liu, Yan-Ling
name: Cao, Shan
name: Zhou, Gan
name: Zeng, Hui
name: Chen, Shu-Ping
name: Zhao, Xie-Lan
name: Yang, Jing
name: Chen, Xiao-Ping
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: Additional file 4: Table S4. Comparison of TRM among UGT1A1 genotypes after two cycles of induction therapy in AML patients.
A short note on integer complexity
Creators: name: Steinerberger, Stefan
Publisher: name: Faculty of Science, University of Calgary
Year: 2014

description: Building on an earlier approach by Isbell and Guy, this short note gives a new, constructive upper bound on the smallest number of 1's needed in conjunction with arbitrarily many +, *, and parentheses to write an integer n for generic integers n.
description: Contributions to Discrete Mathematics, Vol 9, No 1 (2014)
NoVT: Eliminating C++ Virtual Calls to Mitigate Vtable Hijacking
Creators: name: Bauer, Markus
name: Rossow, Christian
Publisher: name: CISPA
Year: 2023

description: The vast majority of nowadays remote code execution attacks target virtual function tables (vtables). Attackers hijack vtable pointers to change the control flow of a vulnerable program to their will, resulting in full control over the underlying system. In this paper, we present NoVT, a compiler-based defense against vtable hijacking. Instead of protecting vtables for virtual dispatch, our solution replaces them with switch-case constructs that are inherently control-flow safe, thus preserving control flow integrity of C++ virtual dispatch. NoVT extends Clang to perform a class hierarchy analysis on C++ source code. Instead of a vtable, each class gets unique identifier numbers which are used to dispatch the correct method implementation. Thereby, NoVT inherently protects all usages of a vtable, not just virtual dispatch. We evaluate NoVT on common benchmark applications and real-world programs including Chromium. Despite its strong security guarantees, NoVT improves runtime performance of most programs (mean overhead -0.5%, -3.7% min, 2% max). In addition, protected binaries are slightly smaller than unprotected ones. NoVT works on different CPU architectures and protects complex C++ programs against strong attacks like COOP and ShrinkWrap.
Interlacement in 4-regular graphs: a new approach using nonsymmetric matrices
Creators: name: Traldi, Lorenzo
Publisher: name: Faculty of Science, University of Calgary
Year: 2014

description: Let $F$ be a 4-regular graph with an Euler system $C$. We introduce a simple way to modify the interlacement matrix of $C$ so that every circuit partition $P$ of $F$ has an associated modified interlacement matrix $M(C,P)$. If $C$ and $C^{\prime}$ are Euler systems of $F$ then $M(C,C^{\prime})$ and $M(C^{\prime},C)$ are inverses, and for any circuit partition $P$, $M(C^{\prime},P)=M(C^{\prime},C)\cdot M(C,P)$. This machinery allows for short proofs of several results regarding the linear algebra of interlacement.
description: Contributions to Discrete Mathematics, Vol 9, No 1 (2014)
A note on bounds for the cop number using tree decompositions
Creators: name: Bonato, Anthony
name: Clarke, Nancy E
name: Finbow, Stephen
name: Fitzpatrick, Shannon
name: Messinger, Margaret-Ellen
Publisher: name: Faculty of Science, University of Calgary
Year: 2014
Subjects: Cops and Robbers, cop number, treewidth, retract, tree decomposition

description: In this short note, we supply a new upper bound on the cop number in terms of tree decompositions. Our results in some cases extend a previously derived bound on the cop number using treewidth.
description: Contributions to Discrete Mathematics, Vol 9, No 2 (2014)
The observed neutron star mass distribution as a probe of the supernova explosion mechanism
Creators: name: Pejcha, Ondrej
name: Thompson, Todd A.
name: Kochanek, Christopher S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The observed distribution of neutron star (NS) masses reflects the physics of core-collapse supernova explosions and the structure of the massive stars that produce them at the end of their evolution. We present a Bayesian analysis that directly compares the NS mass distribution observed in double NS systems to theoretical models of NS formation. We find that models with standard binary mass ratio distributions are strongly preferred over independently picking the masses from the initial mass function, although the strength of the inference depends on whether current assumptions for identifying the remnants of the primary and secondary stars are correct. Second, NS formation models with no mass fallback are favored because they reduce the dispersion in NS masses. The double NS system masses thus directly point to the mass coordinate where the supernova explosion was initiated, making them an excellent probe of the supernova explosion mechanism. If we assume no fallback and simply vary the mass coordinate separating the remnant and the supernova ejecta, we find that for solar metallicity stars the explosion most likely develops at the edge of the iron core at a specific entropy of about 2.8 k_B. The primary limitations of our study are the poor knowledge of the supernova explosion mechanism and the lack of broad range of SN model explosions of LMC to solar metallicity.
description: 14 pages, 7 figures, 2 tables. Accepted for publication in MNRAS. Added an appendix discussing the remnant mass distribution of Ugliano et al. (arXiv:1205.3657). For a brief video explaining the key results of this paper, see http://youtu.be/dI0S6OFMwE8
Introducing OMERO-vitessce: an OMERO.web plugin for multi-modal data
Creators: name: Bortolomeazzi, Michele
name: Schmidt, Christian
name: Mallm, Jan-Philipp
Publisher: name: Zenodo
Year: 2025
Subjects: OMERO
OMERO.web
Vitessce
Viewer
Spatial-Omics
RDM
Data-Visualization

description: omero-vitessce: an OMERO.web plugin for multi-modal data viewing.

OMERO is the most used research data management system (RDM) in the bioimaging domain, and has been adopted as a centralized RDM solution by several academic and research institutions. A main reason for this is the ability to directly view and annotate images from a web-based interface. However, this feature of OMERO is currently underpowered for the visualization of very large or multimodal datasets. These datasets, are becoming a more and more common foundation for biological and biomedical studies, due to the recent developments in imaging, and sequencing technologies which enabled their application to spatial-omics. In order to begin to provide this multimodal-data capability to OMERO, we developed omero-vitessce (https://github.com/NFDI4BIOIMAGE/omero-vitessce/tree/main), a new OMERO.web plugin for viewing data stored in OMERO with the Vitessce (http://vitessce.io/) multimodal data viewer. omero-vitessce can be installed as an OMERO.web plugin with PiPy (https://pypi.org/project/omero-vitessce/), and allows users to set up interactive visualizations of their images of cells and tissues through interactive plots which are directly linked to the image. This enables the visual exploration of bioimage-analysis results and of multimodal data such as those generated through spatial-omics experiments. The data visualization is highly customizable and can be configured not only through custom configuration files, but also with the graphical interface provided by the plugin, thus making omero-vitessce a highly user-friendly solution for multimodal data viewing. most biological datasets. We plan to extend the interoperability of omero-vitessce with the OME-NGFF and SpatialData file formats to leverage the efficiency of these cloud optimized formats.

The three files in this Zenodo Record are all the same poster saved in different format all with high resolution images.
Effects of coal composition and fabric on porosity, sorption capacity and gas flow properties in Western Canada Sedimentary Basin coals
Creators: name: Adeboye, Oyeleye Oluwafemi
Publisher: name: University of British Columbia
Year: 2011

description: Porosity, methane sorption capacity, diffusivity and permeability of a suite of vitrinite-rich coals from the Horseshoe Canyon and Mannville formations of the Western Canada Sedimentary Basin were investigated. Coal rank ranges from subbituminous to medium volatile bituminous, equilibrium moisture is between 2.32%-23.75%, and ash is up to 72% although < 20% on average. Total coal porosity estimated using mercury porosimetry and helium pycnometry is between 4.4% and 18%. Helium pycnometry porosity is higher than mercury porosimetry porosity because the smaller molecular diameter of helium allows it to access coal pores which are inaccessible to mercury at test pressures. Greater vitrinite content is generally correlated with higher coal total pore area due to the abundant microporosity in vitrinite. Coal methane sorption capacity is up to 23.5 cc/g on a moisture equilibrated basis and is up to 40.4 cc/g for dry coals. Moisture equilibrated and dry coals sorb differently due to competition for adsorption sites in coal between methane and moisture. No relationship is observed between sorption capacity and coal rank or between maceral content and sorption capacity because of the narrow rank and maceral composition of the samples studied. Permeability was investigated on crushed coals and plugs with crushed permeability not exceeding 1.79∙10⁻² md while plug permeability is up to 0.9 md. Average diffusivity is estimated to be around 10⁻¹¹ to 10⁻¹² m²/s. Coal matrix properties influence crushed permeability. Inertinite-rich coals have higher matrix permeability and diffusivity because of the greater macro- and meso- porosity of inertinite. Plug permeability is dependent on coal matrix properties and the presence of fractures on tested plugs. Coals with better developed fractures are more permeable than coals with poorly developed fractures at the same effective stresses. Probe gas type influences plug permeability. Helium permeability measurements are higher than permeability measured with methane or nitrogen. Permeability difference with probe gas is attributed to a combination of different probe gas molecule size, relative swelling effects of probe gas on coal and associated changes at in-situ stress during tests. Understanding the reasons for permeability variations in coals will help in more focused coal bed methane exploration and development.
Future Moment Assessment for Action Query
Creators: name: Ke, Qiuhong
name: Fritz, Mario
name: Schiele, Bernt
Publisher: name: CISPA
Year: 2023

description: In this paper, we aim to tackle the task of Assessing Future Moment of an Action of Interest (AFM-AI). The goal of this task is to assess if an action of interest will happen or not as well as the starting moment of the action. We aim to assess starting moments at any time-horizon of the future. To this end, we tackle the regression task of the starting moments as a generation task using a Deterministic Residual Guided Variational Regression Module (DR-VRM), which is built on a Variational Regression Module (VRM) and a deterministic residual network. The VRM takes the uncertainty into account and is capable of generating diverse predictions for the starting moment. The deterministic network encourages the VRM to learn from deterministic residual information in order to generate more precise predictions for moment assessment. Experimental results on three datasets clearly show that the proposed method is capable of generating both diverse and precise predictions of starting moments for query actions.
Florida and Mexico Competition for the Winter Fresh Vegetable Market
Creators: name: Buckley, Katharine C.
name: VanSickle, John J.
name: Bredahl, Maury E.
name: Belibasis, Emil
name: Gutierrez, Nicholas
name: Buckley, Katharine C.
name: VanSickle, John J.
name: Bredahl, Maury E.
name: Belibasis, Emil
name: Gutierrez, Nicholas
Publisher: name: Unknown
Year: 1986
Subjects: subject: Crop Production/Industries
subject: International Relations/Trade
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: fresh vegetables
subject: cost of production
subject: cost advantage
subject: price advantage
subject: net competitive advantage
subject: Florida/Mexico competition

description: Florida eggplant producers had the competitive edge over Mexican producers during the 1984/85 winter season, but the Mexicans had the advantage in supplying U.S. vegetable markets with fresh tomatoes, cucumbers, bell peppers, green beans, and squash. That edge will survive if U.S. prices remain high enough to offset Mexico's high marketing costs and if Florida suffers more damaging frosts. U.S. border fees contribute to Mexico's high costs. Enterprise budgets and weighted average prices are used to assess cost and price advantages of producing six winter fresh vegetables in Florida and the west Mexico state of Sinaloa. Cost and price advantages are used to measure the net competitive advantage of producing each of the vegetables and supplying U.S. markets. Production practices and technological changes are discussed.
Radical shift: a grounded theory approach to midlife career change of professionals
Creators: name: Mellor, Brian E.
Publisher: name: University of Calgary
Year: 2006

description: Bibliography: p. 168-172
description: There has been a modest amount of current academic research that has explored the family, situational, lifestyle, demographic, motivational, and/or life course factors that influence people in midlife to change professions. The findings expressed in this study came about through the use of an inductive grounded theory approach to analyze semi-structured interviews with former lawyers and educators who left their professions and are now engaged in unrelated careers. Major findings include: the motivations for why people leave their first careers; the link between the professional, personal, and family spheres of one 's life; the importance of spousal support and security; the transitional process undergone; the consequences of a career change on the family; and the types of new careers that were pursued. Overall, this study discusses how the lines between work, leisure, family, and lifestyle are blurred when people are successful in the proactive pursuit of a new and desirable career.
A short construction of highly chromatic digraphs without short cycles
Creators: name: Severino, Michael
Publisher: name: Faculty of Science, University of Calgary
Year: 2014
Subjects: digraph; chromatic number; acyclic homomorphism; girth

description: A natural digraph analogue of the graph-theoretic concept of an `independent set' is that of an `acyclic set', namely a set of vertices not spanning a directed cycle. Hence a digraph analogue of a graph coloring is a decomposition of the vertex set into acyclic sets. In the spirit of a famous theorem of P. Erd\H{o}s [Graph theory and probability, Canad. J. Math. {\bf11} (1959), 34--38], it was shown probabilistically in [D. Bokal et al., The circular chromatic number of a digraph, J. Graph Theory {\bf46} (2004), no. 3, 227--240] that there exist digraphs with arbitrarily large girth and chromatic number. Here we give a construction of such digraphs.
description: Contributions to Discrete Mathematics, Vol 9, No 2 (2014)
On the existence of supersolid helium-4 monolayer films
Creators: name: Boninsegni, Massimo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Extensive Monte Carlo simulations of helium-4 monolayer films adsorbed on weak substrates have been carried out, aimed at ascertaining the possible occurrence of a quasi-two-dimensional supersolid phase. Only crystalline films not registered with underlying substrates are considered. Numerical results yield strong evidence that helium-4 will not form a supersolid film on {any} substrate strong enough to stabilize a crystalline layer. On weaker substrates, continuous growth of a liquid film takes place.
Details of Introduction, Material and methods, and Results from Why do some primate mothers carry their infant's corpse? A cross-species comparative study
Creators: name: Fernández-Fueyo, Elisa
name: Sugiyama, Yukimaru
name: Matsui, Takeshi
name: Carter, Alecia J.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 60801 Animal Behaviour

description: Provided are figures of infant corpse carrying; elaboration on definitions and data collection; and extended results tables.
Stop the Consent Theater
Creators: name: Fassl, Matthias
name: Gröber, Lea
name: Krombholz, Katharina
Publisher: name: CISPA
Year: 2023

description: The current web pesters visitors with consent notices that claim to "value" their privacy, thereby habituating them to accept all data practices. Users' lacking comprehension of these practices voids any claim of informed consent. Market forces specifically designed these consent notices in their favor to increase users' consent rates. Some sites even ignore users' decisions entirely, which results in a mere theatrical performance of consent procedures designed to appear as if it fulfills legal requirements. Improving users' online privacy cannot rely on individuals' consent alone. We have to look for complementary approaches as well. Current online data practices are driven by powerful market forces whose interests oppose users' privacy expectations - making turnkey solutions difficult. Nevertheless, we provide a bird's-eye view on privacy-improving approaches beyond individuals' consent.
On the temperature dependence of ballistic Coulomb drag in nanowires
Creators: name: Muradov, M. I.
name: Gurevich, V. L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have investigated within the theory of Fermi liquid dependence of Coulomb drag current in a passive quantum wire on the applied voltage $V$ across an active wire and on the temperature $T$ for any values of $eV/k_BT$. We assume that the bottoms of the 1D minibands in both wires almost coincide with the Fermi level. We come to conclusions that 1) within a certain temperature interval the drag current can be a descending function of the temperature $T$; 2) the experimentally observed temperature dependence $T^{-0.77}$ of the drag current can be interpreted within the framework of Fermi liquid theory; 3) at relatively high applied voltages the drag current as a function of the applied voltage saturates; 4) the screening of the electron potential by metallic gate electrodes can be of importance.
description: 7 pages, 1 figure
Spin Correlations of Lambda anti-Lambda Pairs as a Probe of Quark-Antiquark Pair Production
Creators: name: Ellis, John
name: Hwang, Dae Sung
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The polarizations of Lambda and anti-Lambda are thought to retain memories of the spins of their parent s quarks and antiquarks, and are readily measurable via the angular distributions of their daughter protons and antiprotons. Correlations between the spins of Lambda and anti-Lambda produced at low relative momenta may therefore be used to probe the spin states of s anti-s pairs produced during hadronization. We consider the possibilities that they are produced in a 3P_0 state, as might result from fluctuations in the magnitude of , a 1S_0 state, as might result from chiral fluctuations, or a 3S_1 or other spin state, as might result from production by a quark-antiquark or gluon pair. We provide templates for the p anti-p angular correlations that would be expected in each of these cases, and discuss how they might be used to distinguish s anti-s production mechanisms in pp and heavy-ion collisions.
description: 12 pages, 3 figures
Colouring isonemal fabrics with more than two colours by thin striping
Creators: name: Thomas, Robert
Publisher: name: Faculty of Science, University of Calgary
Year: 2014
Subjects: colour; fabric; isonemal; striping; weaving

description: Perfect colouring of isonemal fabrics by thin striping of warp and weft with more than two colours is examined. Examples of thin striping in all possible species with no redundancy and with redundant cells arranged as twills are given. Colouring woven flat tori is discussed.
description: Contributions to Discrete Mathematics, Vol 9, No 2 (2014)
RESEARCH ON THE IMPACT OF TECHNOLOGICAL DIVERSIFICATION OF INNOVATION NETWORKS ON THE CONTINUOUS INNOVATION OF ENTERPRISES — A PERSPECTIVE BASED ON SOCIAL NETWORK THEORY
Creators: name: LI JINGXI
name: CHANG XIAOYING
name: WANG YUJIAO
Publisher: name: Zenodo
Year: 2024
Subjects: Technological Diversification of Innovation Networks; Technology Integration Capabilities; Continuous Innovation.

description: Abstract

Under the new development pattern of the double cycle in the digital economy era and vigorously promoting China's manufacturing power, the key to enterprise development is to comprehensively utilize the new internal and external development dynamics to enhance technological capabilities and strengthen knowledge management. Therefore, it has become a trend for enterprises to form innovation consortiums. Diversified technologies in cooperative innovation networks have become a critical external resource for enterprise i.innervation. However, more research is needed on how technological diversification in innovation networks affects the sustained innovation of enterprises. Existing studies ignore the different combinations of factors in the external environment of enterprises that may have a different impact on the sustained innovation of enterprises. Based on integrating social network, resource-based, and dynamic capability theories, this study constructs a cooperative innovation network based on the data of joint patent applications of listed companies in the information technology industry. It analyzes the intrinsic mechanism and weighting factors of the technological diversification of innovation networks affecting enterprises' continuous innovation from the perspective of individual networks by adopting the panel data random-effects negative binomial regression method. The study results show that technological diversification in innovation networks positively affects firms' continuous innovation, and technical integration capability mediates between the two. The findings of this study will be of great significance in guiding the development of the theory and practice of sustained innovation in enterprises.
The copnumber for lexicographic products and sums of graphs
Creators: name: Schroeder, Bernd
Publisher: name: Faculty of Science, University of Calgary
Year: 2014
Subjects: discrete mathematics, graph, cops and robber, retraction, dismantlable

description: For the lexicographic product $G\bullet H$ of two graphs $G$ and $H$ so that $G$ is connected, we prove that if the copnumber $c(G)$ of $G$ is greater than or equal to $2$, then $c(G\bullet H)=c(G)$. Moreover, if $c(G)=c(H)=1$, then $c(G\bullet H)=1$. If $c(G)=1$, $G$ has more than one vertex, and $c(H)\geq 2$, then $c(G\bullet H)=2$. We also provide the copnumber for general lexicographic sums.
description: Contributions to Discrete Mathematics, Vol 9, No 2 (2014)
The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 Ultracool Dwarfs
Creators: name: Faherty, Jacqueline K.
name: Burgasser, Adam J.
name: Walter, Frederick M.
name: Van der Bliek, Nicole
name: Shara, Michael M.
name: Cruz, Kelle L.
name: West, Andrew A.
name: Vrba, Frederick J.
name: Anglada-Escud, Guillem
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report parallax measurements for 70 ultracool dwarfs (UCDs). Using both literature values and our sample, we report new polynomial relations between spectral type and M$_{JHK}$. Including resolved L/T transition binaries in the relations, we find no reason to differentiate between a "bright" (unresolved binary) and "faint" (single source) sample across the L/T boundary. Isolating early T dwarfs, we find that the brightening of T0-T4 sources is prominent in M$_{J}$ where there is a [1.2 - 1.4] magnitude difference. A similar yet dampened brightening of [0.3 - 0.5] magnitude happens at M$_{H}$ and a plateau or dimming of [-0.2 - -0.3] magnitude is seen in M$_{K}$. Comparing with evolutionary models that vary gravity, metallicity, and cloud thickness we find that a near constant temperature of 1200 $\pm$100 K along a narrow spectral subtype of T0-T4 is required to account for the brightening and color magnitude diagram of the L-dwarf/T-dwarf transition. Furthermore, there is a significant population of both L and T dwarfs which are red or potentially "ultra-cloudy" compared to the models, many of which are known to be young indicating a correlation between enhanced photospheric dust and youth. For the low surface-gravity or young companion L dwarfs we find that 8 out of 10 are at least [0.2-1.0] magnitude underluminous in M$_{JH}$ and/or M$_{K}$ compared to equivalent spectral type objects. We speculate that this is a consequence of increased dust opacity and conclude that low-surface gravity L dwarfs require a completely new spectral-type/absolute magnitude polynomial for analysis.
description: 65 pages, Accepted for publication to ApJ
Population Synthesis for Symbiotic X-ray Binaries
Creators: name: Lu, G. -L.
name: Zhu, C. -H.
name: Postnov, K. A.
name: Yungelson, L. R.
name: Kuranov, A. G.
name: Wang, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Symbiotic X-ray binaries (SyXBs) comprise a rare class of low-mass X-ray binaries. We study the Galactic SyXBs, which we consider as detached binaries composed of low-mass giants and wind-fed neutron star companions, by simulation of the interaction of a magnetized neutron star (NS) with its environment and utilizing a population synthesis code. We focus mainly on the parameters that influence observational appearance of the SyXB: the donor wind velocity (vw) and the angular momentum distribution in the shell of matter settling onto NS. We estimate the birthrate of SyXB as $\sim 4.1\times 10^{-5}$ yr$^{-1}$ to $ \sim 6.6\times 10^{-6}$ yr$^{-1}$ and their number in the Galaxy as $\sim$(100 -- 1000). Assumed stellar wind velocity from cool giants is the input parameter that influences the model SyXBs population most. Among known SyXBs or candidate systems, 4U 1954+31 and IGR J16358-4724 in which NS have very long spin periods may host quasi-spherically accreting NSs. GX 1+4 has a peculiar long-term spin behaviour and it may also be a quasi-spherical wind-accreting source. We cannot identify whether there are wind-fed accretion disks in 4U 1700+24, Sct X-1, IRXS J180431.1-273932 and 2XMM J174016.0-290337.
description: 12 pages, 6 figures, 3 tables (accepted for publication in MNRAS)
BGPeek-a-Boo: Active BGP-based Traceback for Amplification DDoS Attacks
Creators: name: Krupp, Johannes
name: Rossow, Christian
Publisher: name: CISPA
Year: 2023

description: Amplification DDoS attacks inherently rely on IP spoofing to steer attack traffic to the victim. At the same time, IP spoofing undermines prosecution, as the originating attack infrastructure remains hidden. Researchers have therefore proposed various mechanisms to trace back amplification attacks (or IP-spoofed attacks in general). However, existing traceback techniques require either the cooperation of external parties or a priori knowledge about the attacker. We propose BGPeek-a-Boo, a BGP-based approach to trace back amplification attacks to their origin network. BGPeek-a-Boo monitors amplification attacks with honeypots and uses BGP poisoning to temporarily shut down ingress traffic from selected Autonomous Systems. By systematically probing the entire AS space, we detect systems forwarding and originating spoofed traffic. We then show how a graph-based model of BGP route propagation can reduce the search space, resulting in a 5x median speed-up and over 20x for 1/4 of all cases. BGPeek-a-Boo achieves a unique traceback result 60% of the time in a simulation-based evaluation supported by real-world experiments.
Assessment of a Marketing Order Prorate Suspension: A Study of California - Arizona Naval Oranges
Creators: name: Powers, Nicholas J.
name: Zepp, Glenn A.
name: Hoff, Frederic L.
name: Powers, Nicholas J.
name: Zepp, Glenn A.
name: Hoff, Frederic L.
Publisher: name: Unknown
Year: 1986
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business
subject: Marketing orders
subject: navel oranges
subject: handler prorate
subject: prorate suspension
subject: economic effects

description: The market for California-Arizona navel oranges performed in about the same way during the 1984/85 season after the handler prorate was suspended as during comparable prorated periods. The industry uses a handler prorate to regulate the weekly quantity of fresh navel oranges shipped to the domestic market by placing an upper limit on the quantity each handler can sell. The prorate was suspended when fresh navel orange prices exceeded parity level during the 1984/85 season. Only minor differences existed between the prorate suspension and prorated periods in the stability of shipments and prices. Higher prices in the 1984/85 season were due to relatively small U.S. fresh orange supplies during the winter. Handler marketing practices changed very little during the partial season with a prorate suspension. The shortrun effects of a full-season prorate suspension would be lower grower prices, greater fresh use, and less processing use of available supplies.
Mass Predictions for Pseudoscalar $J^{PC}=0^{-+}$ Charmonium and Bottomonium Hybrids in QCD Sum-Rules
Creators: name: Berg, R.
name: Harnett, D.
name: Kleiv, R. T.
name: Steele, T. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Masses of the pseudoscalar $(J^{PC}=0^{-+})$ charmonium and bottomonium hybrids are determined using QCD Laplace sum-rules. The effects of the dimension-six gluon condensate are included in our analysis and result in a stable sum-rule analysis, whereas previous studies of these states were unable to optimize mass predictions. The pseudoscalar charmonium hybrid is predicted to have a mass of approximately 3.8 GeV and the corresponding bottomonium prediction is 10.6 GeV. Calculating the full correlation function, rather than only the imaginary part, is shown to be necessary for accurate formulation of the sum-rules. The charmonium hybrid mass prediction is discussed within the context of the X Y Z resonances.
description: 10 pages, 7 embedded figures. Analysis extended and refined in v2
Statistical interparticle potential on noncommutative space
Creators: name: Gangopadhyay, Sunandan
name: Deb, Ram Narayan
name: Scholtz, Frederik. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the statistical potential between two particles in the coherent state formalism on the deformed configuration space. The result obtained by using the coherent states having a further degree of freedom (proposed in \cite{rohwer}) is compatible with Pauli's exclusion principle reassuring the fact that noncommutative quantum mechanics may in some way encode the notion of physical extent and structure.
description: 8 pages Latex, To appear in Euro.Physics.Letters
Non-adiabatic Electron Pumping through Interacting Quantum Dots
Creators: name: Croy, Alexander
name: Saalmann, Ulf
name: Hernández, Alexis R.
name: Lewenkopf, Caio H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study non-adiabatic charge pumping through single-level quantum dots taking into account Coulomb interactions. We show how a truncated set of equations of motion can be propagated in time by means of an auxiliary-mode expansion. This formalism is capable of treating the time-dependent electronic transport for arbitrary driving parameters. We verify that the proposed method describes very precisely the well-known limit of adiabatic pumping through quantum dots without Coulomb interactions. As an example we discuss pumping driven by short voltage pulses for various interaction strengths. Such finite pulses are particular suited to investigate transient non-adiabatic effects, which may be also important for periodic drivings, where they are much more difficult to reveal.
description: 11 pages, 4 figures
Virasoro action on Imaginary Verma modules and the operator form of the KZ-equation
Creators: name: Cox, Ben
name: Futorny, Vyacheslav
name: Martins, Renato
Publisher: name: arXiv
Year: 2011
Subjects: subject: Representation Theory (math.RT)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B67, 81R10

description: We define the Virasoro algebra action on imaginary Verma modules for affine sl(2) and construct the analogs of Knizhnik-Zamolodchikov equation in the operator form. Both these results are based on a free field realization of imaginary Verma modules.
Cali: Compiler Assisted Library Isolation
Creators: name: Bauer, Markus
name: Rossow, Christian
Publisher: name: CISPA
Year: 2023

description: Software libraries can freely access the program's entire address space, and also inherit its system-level privileges. This lack of separation regularly leads to security-critical incidents once libraries contain vulnerabilities or turn rogue. We present Cali, a compiler-assisted library isolation system that fully automatically shields a program from a given library. Cali is fully compatible with mainline Linux and does not require supervisor privileges to execute. We compartmentalize libraries into their own process with well-defined security policies. To preserve the functionality of the interactions between program and library, Cali uses a Program Dependence Graph to track data flow between the program and the library during link time. We evaluate our open-source prototype against three popular libraries: Ghostscript, OpenSSL, and SQLite. Cali successfully reduced the amount of memory that is shared between the program and library to 0.08% (ImageMagick) - 0.4% (Socat), while retaining an acceptable program performance.
Characterizing Slow Exit and Entrance Points
Creators: name: Kuehn, Christian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Geometric Singular Perturbation Theory (GSPT) and Conley Index Theory are two powerful techniques to analyze dynamical systems. Conley already realized that using his index is easier for singular perturbation problems. In this paper, we will revisit Conley's results and prove that the GSPT technique of Fenichel Normal Form can be used to simplify the application of Conley index techniques even further. We also hope that our results provide a better bridge between the different fields. Furthermore we show how to interpret Conley's conditions in terms of averaging. The result are illustrated by the two-dimensional van der Pol equation and by a three-dimensional Morris-Lecar model.
description: preprint version - for final version see journal reference
The digital Balint: using AI in reflective practice
Creators: name: Lewis, Marcus
name: Hayhoe, Benedict
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Neuroscience
Environmental Sciences not elsewhere classified
Science Policy
Mental Health

description: Reflective practice is fundamental to postgraduate general practitioner (GP) training and ongoing professional development. However, real-world challenges like time constraints and professional isolation often limit meaningful engagement with this critical skill. This article proposes that large language models (LLMs), sophisticated artificial intelligence systems, may have potential for enhancing reflective practice. We present three case studies, in which we explore the ability of LLMs to generate thought-provoking questions, which could prompt GPs to consider new angles, address underlying factors, and bridge the gap between theory and practice. Our findings suggest that LLMs could help reframe experiences and foster deeper self reflection, particularly for isolated practitioners. While ethical concerns regarding privacy, over reliance, and potential biases exist, we consider the possibility of responsibly integrating LLMs into reflective practice. For trainees, AI-generated questions might complement personal reflection under guidance. For GPs working in isolation, LLMs present an opportunity to enhance reflective practice, challenging us to consider a place for this technological innovation without diminishing the human aspects essential to medical practice.
Metallogeny, geochronology and tectonic setting of the Gangdese belt, southern Tibet, China
Creators: name: Tafti, Reza
Publisher: name: University of British Columbia
Year: 2012

description: The Gangdese belt in southern Tibet forms the eastern section of the Trans- Himalayan magmatic belt. Until recently, the timing of magmatism in the Gangdese belt was poorly known due to the limited number of geochronological studies. Results of this study provide new insights into both the tectonomagmatic and metallogenic evolution of the southern Tibet. Six major magmatic events (Triassic and older, Early-Middle Jurassic, Late Jurassic, middle Cretaceous, latest Cretaceous-Eocene, and Oligocene-Miocene) are recognized within the southern Gangdese belt, each reflecting a specific paleotectonic setting. Early-Middle Jurassic magmatism occurred in a continental marginal arc tectonic setting, with magmatism related to south-dipping subduction of the Paleo-Tethys beneath the Lhasa terrane. Late Jurassic magmas were derived from a mixed magma source in an extensional magmatic arc setting, possibly during rollback of the Paleo-Tethyan slab and opening of the Neo-Tethys to the south of the Lhasa terrane. Continental arc magmatism, dominated by widespread and voluminous plutonism (Gangdese) and volcanism (Linzizong), began in Early Cretaceous time due to the onset of the north-dipping subduction of Neo-Tethys oceanic slab under the southern edge of the Lhasa terrane. This phase of subduction ended after the middle Eocene collision of the Indian and Eurasia continental plates. An apparent increase in magmatic activity around 50 Ma is attributed to the possible Neo-Tethyan slab rollback and breakoff. Cretaceous-Eocene magmatism includes a hiatus of magmatic activity from 80 Ma to 68 Ma. Miocene magmatism is post-collisional with adakite-like compositions possibly generated from partial melting of an enriched lower crust due to delamination of the thickened lithospheric mantle and asthenospheric upwelling after the collision. At least three major metallogenic epochs (Early-Middle Jurassic, Cretaceous-Eocene and Miocene) within the belt have been recognized, including the world-class Jurassic Xietongmen Cu-Au and Miocene Qulong Cu-Mo porphyry deposits. The Early-Middle Jurassic event includes formation of two major porphyry Cu-Au deposits (Xietongmen and Newtongmen) in the Xietongmen district, reflecting a major but previously unrecognized metallogenic event. This has global economic importance because the rate of new discoveries of large deposits within better explored belts elsewhere in the world has decreased significantly in the last few decades.
Neutral and charged matter in equilibrium with black holes
Creators: name: Bronnikov, K. A.
name: Zaslavskii, O. B.
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 study the conditions of a possible static equilibrium between spherically symmetric, electrically charged or neutral black holes and ambient matter. The following kinds of matter are considered: (1) neutral and charged matter with a linear equation of state p_r = wρ(for neutral matter the results of our previous work are reproduced), (2) neutral and charged matter with p_r \sim ρ^m, m > 1, and (3) the possible presence of a "vacuum fluid" (the cosmological constant or, more generally, anything that satisfies the equality T^0_0 = T^1_1 at least at the horizon). We find a number of new cases of such an equilibrium, including those generalizing the well-known Majumdar-Papapetrou conditions for charged dust. It turns out, in particular, that ultraextremal black holes cannot be in equilibrium with any matter in the absence of a vacuum fluid; meanwhile, matter with w > 0, if it is properly charged, can surround an extremal charged black hole.
description: 12 pages, no figures, final version published in PRD
Translation planes of order 23^2
Creators: name: Abatangelo, Vito
name: Emma, Daniela
name: Larato, Bambina
Publisher: name: Faculty of Science, University of Calgary
Year: 2013

description: We give a complete classication of translation planes of order 23^2 whose translation complement contains a subgroup G such that the quotient group G modulo scalars is isomorphic to A_6. Up to isomorphisms, there are exactly 23 such planes and six of them have a larger translation complement being modulo scalars isomorphic to S_6.
description: Contributions to Discrete Mathematics, Vol 8, No 2 (2013)
Elements of finite order in automorphism groups of homogeneous structures
Creators: name: Bilge, Doğan
name: Melleray, Julien
Publisher: name: Faculty of Science, University of Calgary
Year: 2013
Subjects: Homogeneous structures; Fraïssé classes; Baire category

description: We study properties of the automorphism groups of Fraïssé limits of classes with certain strong amalgamation properties, including classes with the free amalgamation property and classes of metric spaces. We discuss conditions on aFraïssé class $ that imply that the automorphism group  of its limit admits generic elements of order n for all n, and show that, for many such classes, any element of the automorphism group is a product of 4 conjugates of the generic element of order n for alln greater than 2. Our constructions enable us to compute the Borel complexity of the relation of conjugacy between automorphisms of the Henson graphs, and to obtain some new results about the structure of the isometry group of the Urysohn space and the Urysohn sphere.
description: Contributions to Discrete Mathematics, Vol 8, No 2 (2013)
Non-Standard Neutrino Interactions at Colliders
Creators: name: Davidson, Sacha
name: Sanz, Veronica
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Many extensions of the Standard Model lead to non-standard neutrino interactions (NSI), which can affect the interpretation of current and future neutrino data. We explore an alternative approach to the study of these dimension eight four fermion interactions (of coefficient $4 εG_F/\sqrt{2}$), by bringing into play collider data. In models where coefficients of potential dimension six operators are suppressed by cancellations, LEP2 provides interesting bounds on NSI operators ($ε\lsim 10^{-2} - 10^{-3}$). If NSI are contact interactions at LHC energies, they induce an effective interaction $\bar{q} q W^+W^- e_\a^+ e_\b^-$(according to the Equivalence Theorem), to which the LHC at 14 TeV and with 100 fb$^{-1}$ of data has excellent sensitivity ($ε\gsim 3 \times 10^{-3}$).
Faster Stackelberg Planning via Symbolic Search and Information Sharing
Creators: name: Torralba, Àlvaro
name: Speicher, Patrick
name: Künnemann, Robert
name: Hoffmann, Jörg
name: Steinmetz, Marcel
Publisher: name: CISPA
Year: 2023

description: Stackelberg planning is a recent framework where a leader and a follower each choose a plan in the same planning task, the leader's objective being to maximize plan cost for the follower. This formulation naturally captures security-related (leader=defender, follower=attacker) as well as robustness- related (leader=adversarial event, follower=agent) scenarios. Solving Stackelberg planning tasks requires solving many related planning tasks at the follower level (in the worst case, one for every possible leader plan). Here we introduce new methods to tackle this source of complexity, through sharing information across follower tasks. Our evaluation shows that these methods can significantly reduce both the time needed to solve follower tasks and the number of follower tasks that need to be solved in the first place.
The Erdős-Ko-Rado basis for a Leonard system
Creators: name: Tanaka, Hajime
Publisher: name: Faculty of Science, University of Calgary
Year: 2013
Subjects: Leonard system; Erd\H{o}s-Ko-Rado theorem; Distance-regular graph

description: We introduce and discuss an Erd\H{o}s-Ko-Rado basis for the underlying vector space of a Leonard system $\Phi = (A; A^*; \{E_i\}_{i=0}^d ; \{E_i^* \}_{i=0}^d)$ that satisfies a mild condition on the eigenvalues of $A$ and $A^*$. We describe the transition matrices to/from other known bases, as well as the matrices representing $A$ and $A^*$ with respect to the new basis. We also discuss how these results can be viewed as a generalization of the linear programming method used previously in the proofs of the "Erd\H{o}s-Ko-Rado theorems" for several classical families of $Q$-polynomial distance-regular graphs, including the original 1961 theorem of Erd\H{o}s, Ko, and Rado.
description: Contributions to Discrete Mathematics, Vol 8, No 2 (2013)