cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Laser Sintering of Thin PZT Film for Sensing Applications
Creators: name: Chuo, Yu Sung
Publisher: name: Schulich School of Engineering
Year: 2023
Subjects: subject: Laser Sintering
subject: PZT
subject: CNT
subject: Piezoelectricity
subject: Engineering--Mechanical
subject: Engineering--Materials Science
subject: Engineering--Chemical

description: The discovery of piezoelectric effect has inspired sensor integration. For these applications, the thinness and flexibility of the sensor are key elements because the easily adaptable use of the sensor would benefit the widespread adoption. Thin ceramic-based piezoelectric sensor is advantageous compared to bulk piezoceramic and polymer sensors when it comes to impact on dynamics measurement, due to the minimal alteration to the system under measurement, and higher frequency bandwidth, provided by the low mass and high stiffness, while satisfying constraints in tight spaces. Lead zirconate titanate (PZT) sensor has traditionally been thermally sintered using a furnace. However, this process consumes large amount of time and energy, requiring many hours and heating of the entire chamber. In this investigation, thin PZT underwent laser sintering, whose localized heating reduces time and energy requirements. Furthermore, CNT/PZT nanocomposite film was prepared in which PZT particles were mixed with carbon nanotubes (CNT) to improve the strength and sintering efficiency, utilizing the mechanical and thermal properties of CNT. Laser processing was optimized by alternating the control parameters, material compositions, and deposition height. A multi-physics finite element modelling was performed to approximate the temperature of the sintering process. Sintered films were obtained and were electrically poled to enhance the piezoelectric property. The effectiveness of laser sintering was assessed with and without CNT. The piezoelectric coefficient of laser sintered PZT increased by approximately 10 fold compared to unsintered PZT. Due to CNTs acting as a reinforcement phase and sintering aid, PZT films containing 0.5 wt% CNTs displayed higher strength compared to PZT films without CNTs after laser sintering, while using less sintering energy. The CNT addition made a compromise on piezoelectric property compared to laser sintered PZT, but still at a high level which is easily utilizable. Based on these results, laser sintering can be effectively used to enhance piezoelectric and mechanical properties of PZT and CNT/PZT films, in smaller turnaround period and energy budget.
Child Development for Children Born Too Soon: Identifying Mechanisms and Points for Early Intervention
Creators: name: Stephenson, Nikki L
Publisher: name: Cumming School of Medicine
Year: 2022
Subjects: subject: gestational age
subject: late preterm birth
subject: early term birth
subject: developmental delay
subject: Ages and Stages Questionnaire
subject: early childhood development
subject: group-based trajectory modelling
subject: birth cohort
subject: neurodevelopment
subject: internalizing behaviour
subject: externalizing behaviour
subject: childcare
subject: Health Sciences--Epidemiology
subject: Developmental
subject: Health Sciences--Obstetrics and Gynecology

description: Background: The distribution of gestational age at birth has shifted in the last 40 years, such that the incidence of late preterm (?34 but <37 weeks) and early term (?37 and <39 weeks) births have increased, accounting for 30% of all births. Infants born late preterm or early term have an increased risk of adverse health outcomes, developmental delays, social-emotional and behavioural problems; yet, gestational age at birth alone does not include these infants in routine developmental screening programs. The intersection between the increased incidence and increased risk of developmental challenges for children born late preterm and early term accentuates the importance of understanding their specific early childhood developmental outcomes for future intervention. Methods: Using data from the All Our Families cohort, these studies examined the association between gestational age at birth and trajectories of developmental delay throughout early childhood with social-emotional and behavioural problems at age 5. Patterns of developmental delay were explored using group-based trajectory modelling. Multivariable logistic regression was used to analyze social-emotional and behavioural problems at 5 years of age and the modifying effect of childcare.Results: Late preterm and early term birth increase the probability developmental delays, as does poor maternal mental health in pregnancy, identifying as an ethnic minority, advanced maternal age, or being a male child. However, the effects of decreasing gestational age on the risk of developmental delay differ between individual domains of development. Though decreasing gestational age was not independently associated with social-emotional or behavioural problems at age 5 years, there was a significant interaction between type of childcare and gestational age. Instability of childcare at 3 years of age was independently associated with increased behavioural problems at 5 years of age.Conclusion: This study found that late preterm and early term born children have an increased independent risk of developmental delay throughout early childhood, but not social-emotional or behavioural problems. Additional developmental monitoring may be warranted for children who are born <39 weeks gestation. Providing equitable access to high-quality, stable childcare, where routine developmental screening is often standard practice, may better support these children and their families.
title: Penis vascular evaluation through Time-resolved MRA
Creators: name: Gallardo Madueño, Guillermo
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Embolism / Thrombosis
subject: Blood
subject: Diagnostic procedure
subject: MR-Angiography
subject: MR
subject: Vascular
subject: Soft tissues / Skin
subject: Genital / Reproductive system male

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: To discuss clinical situations with vascular impairment affecting the penis. To depict Time-Resolved MRA (TR-MRA) technique for evaluation of these conditions. To illustrate the impact of TR-MRA for choosing subsequent treatments...
Outperformance Portfolio Optimization via the Equivalence of Pure and Randomized Hypothesis Testing
Creators: name: Leung, Tim
name: Song, Qingshuo
name: Yang, Jie
Publisher: name: arXiv
Year: 2011
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Applications (stat.AP)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences
subject: 60H30, 62F03, 62P05, 90A09

description: We study the portfolio problem of maximizing the outperformance probability over a random benchmark through dynamic trading with a fixed initial capital. Under a general incomplete market framework, this stochastic control problem can be formulated as a composite pure hypothesis testing problem. We analyze the connection between this pure testing problem and its randomized counterpart, and from latter we derive a dual representation for the maximal outperformance probability. Moreover, in a complete market setting, we provide a closed-form solution to the problem of beating a leveraged exchange traded fund. For a general benchmark under an incomplete stochastic factor model, we provide the Hamilton-Jacobi-Bellman PDE characterization for the maximal outperformance probability.
description: 34 pages, 3 figures
Sufficiency of Intercellular Adhesion Molecule-1 in a Novel Secretory Process in Macrophages
Creators: name: Orsetti, Tanis L
Publisher: name: Cumming School of Medicine
Year: 2022
Subjects: subject: Macrophage
subject: Immunology
subject: FOS: Clinical medicine
subject: Phagocyte
subject: Phagocytosis
subject: Biology--Cell
subject: Biology--Molecular

description: It was previously shown by our lab that mature phagolysosomes can transiently fuse with the plasma membrane and release their soluble contents into the extracellular milieu. This process, termed eructophagy, is believed to facilitate the spread of optimally stimulatory PAMPs and DAMPS to surrounding leucocytes. Our lab previously observed that neutrophils induce an increase in eructophagy in macrophages through direct contact. This was found to be dependent on ICAM-1 and LFA-1 on the surface of macrophages and neutrophils, respectively. The work presented in my thesis further explores the ICAM-1/LFA-1-dependent increase in macrophage eructophagy when in direct contact with vicinal leukocytes. I first observed that, similar to neutrophils, naive CD4+ T cells induce an increase in eructophagy in macrophages, dependent on ICAM-1 and LFA-1 on macrophages and T cells, respectively. To discern if ligation of ICAM-1 on its own increases eructophagy, I cross-linked ICAM-1 using antibodies and found that cross- linking of ICAM-1 was sufficient to induce eructophagy. Further, I showed that Lyn is necessary for induction of eructophagy downstream of ICAM-1. I explored the role of cortactin, a Lyn substrate, in the context of eructophagy. I found that eructophagy was not increased in cortactin knockdown macrophages in the presence of T cells, suggesting that cortactin could be acting downstream of ICAM-1 to induce increased eructophagy. Using phalloidin staining, I showed that F-actin structures appeared to differ significantly between cortactin knockdown and control macrophages, indicating that cortactin may be involved in the regulation of F-actin architecture at the cell cortex of macrophages. Overall, the work presented in this thesis suggests a novel pathway through which ICAM-1 signalling mediates increased eructophagy in macrophages. Taken togetherwith the previous observation that eructophagy activates vicinal leukocytes, the findings reported in this body of work suggest that eructophagy may allow for bidirectional communication between macrophages and surrounding leukocytes to amplify signals of inflammation in the local microenvironment.
Time averaged distribution of a discrete-time quantum walk on the path
Creators: name: Ide, Yusuke
name: Konno, Norio
name: Segawa, Etsuo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The discrete time quantum walk which is a quantum counterpart of random walk plays important roles in the theory of quantum information theory. In the present paper, we focus on discrete time quantum walks viewed as quantization of random walks on the path. We obtain a weak limit theorem for the time averaged distribution of our quantum walks.
description: 8 pages, Quantum Information Processing (in press)
title: Культурно-исторические аспекты формирования перформанса
Creators: name: Листова, Е. В.
name: Маленко, С. А.
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: В статье рассматривается генезис перформанса, его предпосылки, которые повлияли на современную социокультурную действительность. В XX веке происходит смена координат в искусстве, когда все традиционные формы ушли в прошлое, а художники стали искать новые пути развития своего творчества. Появились новые жанры, различные художественные практики, это было время небывалых экспериментов. В 60–70-е гг.
произошел так называемый перформативный переворот – художники стали работать со своим телом, а зрители превратились в соучастников создания произведения, заранее запланированное действие превратилось в режим «live». С каждым годом популярность и востребованность перформанса возрастало и делало его одним из ярких явлений искусства в современной мировой социокультурной действительности, что составило отдельный предмет отечественных и западных исследователей.
The Issue of Battle: The Evolution of Operational Art in Western Iraq, 2003-2007
Creators: name: Jensen, Rebecca W.
Publisher: name: Arts
Year: 2021
Subjects: subject: Operational Art
subject: Military Innovation
subject: Military Adaptation
subject: Military Design
subject: Campaign Planning
subject: Operation Iraqi Freedom
subject: Polemology
subject: Warfighting
subject: Military Studies
subject: History--Military
subject: History--United States
subject: History--Modern
subject: Political Science--International Law and Relations

description: Operational art is the activity that connects tactical capabilities to strategic goals. A tacit form of operational art has existed since warfare extended beyond single battles, and a conscious approach to the activity began in the pre-Napoleonic era. Since then, the discipline has become more formal and sophisticated in response to the expansion of warfare in functions, time, space, and domains. Unlike most other states, the 20th century US approach to operational art oriented toward force projection and the investment of unmatched resources, to the exclusion of sociopolitical factors. In the Second World War, this approach yielded victory. In Vietnam, among others, it did not.During the 2003 invasion of Iraq, US operational art yielded a rapid conventional victory. This was quickly subsumed by the eruption of irregular warfare, undermining then-extant military plans. In western Iraq, urban campaigns between 2003 and 2007 illustrate a progressive evolution of operational art to link tactical capabilities to theatre strategy. This new approach emphasized close interaction with the population, to identify and destroy insurgent networks while protecting civilians. It was intrinsically conscious of the sociopolitical environment. This evolution of operational art became institutionalized as doctrine in early 2007, and formed the basis of US operations in Iraq until the retrograde in 2011.This dissertation documents the evolution of US operational art across five urban campaigns. The approach of commanders and staffs reflect three characteristics central to their improvement in operational art. The first is the willingness to challenge the mission, and develop an original and sometimes divergent understanding of how tactical actions were related to the overall strategy for Iraq. The second is the ability to view the operating environment as a complex adaptive system, including sociopolitical factors not included in traditional intelligence assessments. The third is the emergence of a population-centric practice of counterinsurgency. Together, these three characteristics are a function of the tacit practice of design thinking, which emphasizes the creation of new ways to frame problems and conceptualize the context. This evolution in operational art has implications for professional military education, command, and the cognitive preparation for uncertainty in combat.
On the design of low-voltage power-efficient CMOS active down-conversion mixers
Creators: name: Masnadi Shirazi Nejad, Amir Hossein
Publisher: name: University of British Columbia
Year: 2013

description: The scaling of CMOS technologies has a great impact on analog and radio-frequency (RF) circuit design. In particular, as technology advances the available voltage headroom is decreased due to the use of lower supply voltage. In addition to design challenges due to the headroom limitation, the power consumption is also becoming more important, in particular, in wireless communication applications and portable devices. In this work, we investigate several design techniques for achieving ultra-low-voltage (< 0.5 V), ultra-low-power (< 500 µW), and ultra-wideband (DC to 8 GHz) wireless receiver building blocks with a specific focus on the active CMOS mixers. Mixers are important building blocks of almost all modern transceivers and they are primarily used for frequency translation. In this work, we briefly review many state-of-the-art design techniques, discuss the advantages and drawbacks of currently used methods, and then we introduce design techniques to improve performances of different receiver building blocks, namely, mixers and LNAs. As a proof-of-concept three different RF active CMOS mixers are designed, have been fabricated in 0.13-µm and 90-nm CMOS processes, and are successfully tested. We have also proposed a linearization method, which is specifically applicable to mixers and low-noise-amplifiers (LNAs). A proof-of-concept circuit for the proposed linearization technique is also designed and implemented in a 0.13-µm CMOS process and is successfully tested.
Strongly correlated photons generated by coupling a three- or four-level system to a waveguide
Creators: name: Zheng, Huaixiu
name: Gauthier, Daniel J.
name: Baranger, Harold U.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the generation of strongly correlated photons by coupling an atom to photonic quantum fields in a one-dimensional waveguide. Specifically, we consider a three-level or four-level system for the atom. Photon-photon bound states emerge as a manifestation of the strong photon-photon correlation mediated by the atom. Effective repulsive or attractive interaction between photons can be produced, causing either suppressed multiphoton transmission (photon blockade) or enhanced multiphoton transmission (photon-induced tunneling). As a result, nonclassical light sources can be generated on demand by sending coherent states into the proposed system. We calculate the second-order correlation function of the transmitted field and observe bunching and antibunching caused by the bound states. Furthermore, we demonstrate that the proposed system can produce photon pairs with a high degree of spectral entanglement, which have a large capacity for carrying information and are important for large-alphabet quantum communication.
description: 13+ pages, 7 figures
Oxygen Reduction at Ordered Mesoporous Nitrogen-doped Carbons in Alkaline Media
Creators: name: Luong, Samantha
Publisher: name: Science
Year: 2022
Subjects: subject: chemistry
subject: oxygen reduction reaction
subject: N-doped carbon
subject: mesoporous carbon
subject: alkaline
subject: electrochemistry
subject: colloid imprinted carbon
subject: CIC
subject: rotating disc electrode
subject: RDE
subject: rotating ring disc electrode
subject: RRDE
subject: Levich
subject: Koutecky-Levich
subject: electron transfer
subject: Physical Sciences
subject: Chemistry--General

description: This work has focused on the investigation of the performance of Colloid Imprinted Carbon (CIC) powders, before and after nitrogen (N) doping using a high temperature ammonia gas treatment to produce a new family of N-doped CICs (N-CICs), towards the oxygen reduction reaction (ORR) in alkaline solutions. Two pore size CICs (12 and 85 nm) were prepared, with the resulting N-CICs showing 3 at% N content (translating to a surface coverage of ~30%) and with ~50% of the N sites being in the pyridinic form, also showing an increased surface area and improved wettability of the CIC surfaces. After the deposition of different film thicknesses of the N-CICs on glassy carbon (GC) discs, the ORR was studied using both rotating disc (RDE) and rotating-ring-disc (RRDE) electrode techniques. The kinetics and reaction pathway of the ORR at the N-CICs were compared to the performance of the ORR at several benchmark materials, including glassy carbon discs and Vulcan carbon (VC) powder, both considered as poor ORR catalysts, as well as Pt nanoparticles supported on VC, known to be a very good ORR catalyst. It is shown that the CICs are significantly more ORR-active than GC and VC and that N-doping unambiguously improves the ORR further, approaching the Pt/C performance. The highest loading of N-CIC-12, which has the highest active surface area, gave an onset potential of 0.91 V vs. the reversible hydrogen electrode (RHE) at 0.1 mA/cm2, an onset current density of 0.6 mA/cm2 at 0.85 V vs. RHE, and n values of 3.8-3.9, as determined in RRDE experiments. Tafel slopes of 60 mV/dec were observed in cathodic scans and a mass dependent 80 mV/dec in anodic scans. Overall, the N-CIC catalysts are shown to be among the best non-Pt N-doped carbon ORR catalysts reported to date, with future optimization likely to be able to improve the ORR performance still further.
Soft nuclear equation-of-state from heavy-ion data and implications for compact stars
Creators: name: Sagert, Irina
name: Tolos, Laura
name: Chatterjee, Debarati
name: Schaffner-Bielich, Juergen
name: Sturm, Christian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Measurements of kaon production at subthreshold energies in heavy-ion collisions point to a soft nuclear equation-of-state for densities up to 2-3 times nuclear matter saturation density. We apply these results to study the implications on compact star properties, especially in the context of the recent measurement of the two solar mass pulsar PSR J1614-2230. The implications are two-fold: Firstly, the heavy-ion results constrain nuclear matter at densities relevant to light neutron stars. Hence, a radius measurement could provide information about the density dependence of the symmetry energy which is a crucial quantity in nuclear physics. Secondly, the information on the nucleon potential obtained from the analysis of the heavy-ion data can be combined with restrictions from causality on the nuclear equation-of-state. From this we can derive a limit for the highest allowed compact star mass of three solar masses.
description: 7 pages, 4 figures, version accepted for publication in Phys. Rev. C
Formation and Characterization of Monometallic and Bimetallic Nanoparticles via Thermal and Pulsed Laser-induced Dewetting
Creators: name: Bonvicini, Stephanie N.
Publisher: name: Science
Year: 2023
Subjects: subject: nanoparticles
subject: bimetallic
subject: alloy
subject: core/shell
subject: thermal dewetting
subject: pulsed laser-induced dewetting
subject: gold-silver
subject: gold-platinum
subject: gold
subject: platinum
subject: nanoparticle removal
subject: electrochemistry
subject: materials science
subject: Chemistry--Physical

description: Thermal dewetting and pulsed laser-induced dewetting (PLiD) were used to form monometallic Au and Pt and bimetallic Au-Ag and Au-Pt nanoparticles (NPs). The configuration, optical, and electrochemical properties of the NPs were characterized. Au-Ag alloyed NPs of various atomic ratios were prepared using thermal dewetting of Au-Ag bilayer thin films on Si substrates. The sputtering order and atomic ratio did not have a significant impact on NP size, which varied linearly with increasing total bilayer thickness. X-ray photoelectron spectroscopy (XPS) and scanning transmission electron microscopy (STEM)/high-angle annular dark field (HAADF) imaging confirmed the NPs were alloyed. A NP removal procedure was developed, producing colloidal NP solutions for surface plasmon resonance (SPR) characterization. Maximum absorbance of the NP SPR band varied linearly with the alloy composition. Thermal dewetting was further used to prepare Au-Ag alloyed NPs on dimpled Ta (DT) substrates for surface characterization using electrochemical techniques. Cyclic voltammograms (CVs) in alkaline conditions highlighted improved stability as compared to pure metal NPs. The electrochemical behaviour was highly tunable based on the Au : Ag ratio. These results were confirmed in acidic chloride conditions. The AgCl reduction peak of the bimetallic NPs is closer to that of bulk Ag. Dissolution of Au in the bimetallic NPs was reduced significantly as compared to pure Au NPs. Thermal dewetting of Au, Pt, and Au-Pt on Si substrates was explored. Complete dewetting of Au films up to 5.5 nm was possible, with a linear dependence between NP size and initial film thickness. Complete dewetting of Pt was only achieved for 1.4 nm-thick films. Only partial dewetting was possible for Au-Pt bilayers, leading to bicontinuous nanostructures. Energy dispersive X-ray (EDX) spectroscopy confirmed the nanostructures were bimetallic. X-ray diffraction (XRD) indicated that Au and Pt were phase-segregated. PLiD achieved complete dewetting of Au-Pt bilayers on Si and DT substrates. NP size depended heavily on total bilayer thickness, but not significantly on laser fluence, irradiation time, or sputtering order. The percentage of dimples occupied by a single NP was greater for thinner bilayers. XPS and CVs supported a phase-segregated configuration of a Pt-rich core / Au-rich shell.
Multi-strange baryon production in pp collisions at $\sqrt{s}$ = 7 TeV with ALICE
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A measurement of the multi-strange $Ξ^-$ and $Ω^-$ baryons and their antiparticles by the ALICE experiment at the CERN Large Hadron Collider (LHC) is presented for inelastic proton-proton collisions at centre of mass energy of 7 TeV. The transverse momentum ($p_{\rm T}$) distributions were studied at mid-rapidity (|y| < 0.5) in the range of 0.6 < $p_{\rm T}$ < 8.5 GeV/$c$ for $Ξ^-$ and $Ξ^+$ baryons, and in the range of 0.8 < $p_{\rm T}$ < 5 GeV/$c$ for $Ω^-$ and $Ω^+$. Baryons and antibaryons were measured as separate particles and we find that the baryon to antibaryon ratio of both particle species is consistent with unity over the entire range of the measurement. The statistical precision of the current LHC data has allowed us to measure a difference between the mean $p_{\rm T}$ of $Ξ^-$ ($Ξ^+$) and $Ω^-$ ($Ω^+$). Particle yields, mean $p_{\rm T}$, and the spectra in the intermediate $p_{\rm T}$ range are not well described by the PYTHIA Perugia 2011 tune Monte Carlo event generator, which has been tuned to reproduce the early LHC data. The discrepancy is largest for $Ω^-$ ($Ω^+$). This PYTHIA tune approaches the $p_{\rm T}$ spectra of $Ξ^-$ and $Ξ^+$ baryons below $p_{\rm T}$ < 0.85 GeV/$c$ and describes the $Ξ^-$ and $Ξ^+$ spectra above $p_{\rm T}$ > 6.0 GeV/$c$. We also illustrate the difference between the experimental data and model by comparing the corresponding ratios of ($Ω^{-}+Ω^+)/(Ξ^-+Ξ^+)$ as a function of transverse mass.
description: 15 pages, 4 captioned figures, 2 tables, authors from page 10, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/3100
title: Automated deep neural network detection, prediction, and findings sub-classification of radiographically suspicious tuberculosis on routine chest radiographs
Creators: name: Fung, Tiffany
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Infection
subject: Computer Applications-General
subject: Digital radiography
subject: Conventional radiography
subject: Respiratory system
subject: Artificial Intelligence

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Tuberculosis (TB) is a leading cause of death worldwide and while there are effective ways to prevent, detect and cure the disease, it remains a significant global public health challenge that has sparked the concern of the World Health Organization...
Discovering Euler's Number in n-Cube Variable Inequality Regions
Creators: name: Beatty, Justin
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 490499
subject: Pure mathematics not elsewhere classified

description: This paper investigates the geometric characteristics of specific n-dimensional shapes, referred to as "PO n-cubes," in relation to regions within these cubes where specific dimension inequalities are satisfied, referred to as "PO inequality regions." The paper introduces the "POIR Theorem," which establishes a formula for calculating the geometric measurements of these regions in n-dimensional space. Furthermore, it uncovers a consistent pattern of ratios between the measurements of PO n-cubes and their corresponding PO inequality regions, revealing intriguing connections to Euler's Number in this geometric exploration.
Lightlike contours with fermions
Creators: name: Caputa, Pawel
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider high energy scattering of open superstrings in flat spacetime. It is shown that in this regime amplitudes are dominated by minimal supersurfaces spanned by lightlike supercontours built of the on-shell momenta. We demonstrate how using a generalization of the functional over reparametrizations of the boundary one can extract the area of the minimal supersurfaces directly from the lightlike contour. Exponent of the area correctly reproduces RNS amplitudes. We also comment on possible implementation of the supercontours to Wilson loops/Scattering amplitudes duality.
description: 1+15 pages, v2 to appear in PLB
On reciprocal equivalence of Stäckel systems
Creators: name: Blaszak, Maciej
name: Marciniak, Krzysztof
Publisher: name: arXiv
Year: 2012
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we ivestigate Stäckel transforms between different classes of parameter-dependent Stäckel separable systems of the same dimension. We show that the set of all Stäckel systems of the same dimension splits to equivalence classes so that all members within the same class can be connected by a single Stäckel transform. We also give an explicit formula relating solutions of two Stäckel-related systems. These results show in particular that any two geodesic Stäckel systems are Stäckel equivalent in the sense that it is possible to transform one into another by a single Stäckel transform. We also simplify proofs of some known statements about multiparameter Stäckel transform.
description: We clarified arguments in Section 3, Studies in Applied Mathematics 2012
Discovering Euler's Number in n-Cube Variable Inequality Regions
Creators: name: Beatty, Justin
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 490499
subject: Pure mathematics not elsewhere classified

description: This paper investigates the geometric characteristics of n-dimensional cubes, known as "PO n-cubes," in relation to regions within these cubes where specific dimension inequalities are satisfied, referred to as "PO inequality regions." The paper introduces the "POIR Theorem," which establishes a formula for calculating the geometric measurements of these regions in n-dimensional space. Furthermore, it uncovers a consistent pattern of ratios between the measurements of PO n-cubes and their corresponding PO inequality regions, revealing intriguing connections to Euler's Number in this geometric exploration.
Minimizing the regularity of maximal regular antichains of 2- and 3-sets
Creators: name: Kalinowski, Thomas
name: Leck, Uwe
name: Reiher, Christian
name: Roberts, Ian T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05D05, 06A07, 05C35

description: Let $n\geqslant 3$ be a natural number. We study the problem to find the smallest $r$ such that there is a family $\mathcal{A}$ of 2-subsets and 3-subsets of $[n]=\{1,2,...,n\}$ with the following properties: (1) $\mathcal{A}$ is an antichain, i.e. no member of $\mathcal A$ is a subset of any other member of $\mathcal A$, (2) $\mathcal A$ is maximal, i.e. for every $X\in 2^{[n]}\setminus\mathcal A$ there is an $A\in\mathcal A$ with $X\subseteq A$ or $A\subseteq X$, and (3) $\mathcal A$ is $r$-regular, i.e. every point $x\in[n]$ is contained in exactly $r$ members of $\mathcal A$. We prove lower bounds on $r$, and we describe constructions for regular maximal antichains with small regularity.
description: 7 pages, updated references
title: Machine Learning-Assisted Prediction of Hepatic Steatosis using 3D-CNN Auto-segmentation of Contrast-enhanced Portal Venous Phase CT Examinations of the Abdomen
Creators: name: Mihalcioiu, Samuel
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Cirrhosis
subject: Segmentation
subject: Computer Applications-Detection, diagnosis
subject: CT
subject: Liver
subject: Artificial Intelligence
subject: Abdomen

description: Aims and objectives Methods and materials Results Conclusion Personal information References
description: Aims and objectives: Hepatosteatosis refers to the abnormal accumulation of triglycerides in more than 5% of hepatocytes (Lee DH, 2017; Torres, Williams, & Harrison, 2012). Significant etiologies of hepatosteatosis include consumption of alcohol and Non-Alcoholic Fatty...
title: Glioblastoma: a multiforme tumour
Creators: name: Fonseca, Ana Paula
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Imaging sequences
subject: Diagnostic procedure
subject: PET
subject: MR
subject: CT
subject: Neuroradiology brain
subject: Molecular imaging
subject: Molecular, genomics and proteomics
subject: Neoplasia

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: - To discuss and illustrate the pattern of glioblastoma imaging abnormalities correlating to classification, histological and molecular aspects. - To describe through illustrative cases the scenarios to diagnose, including early onset...
Expanding the circle : collaborative research to create culturally responsive family literacy programming
Creators: name: Gear, Lesley Alison
Publisher: name: University of British Columbia
Year: 2013

description: This thesis documents the creation of a family literacy program developed with, and for, a Haida community on the Northwest Coast of British Columbia. The field of family literacy is juxtaposed with the historical and contemporary school experiences of the community and presented as a means of addressing the imbalance between Indigenous and Western knowledge systems currently offered through the public education system. Both Indigenous and Western research methods are utilized through a process designed to involve the community in the reconstruction of an already-existing community family literacy program, PALS (Parents as Literacy Supporters). The metaphor of a circle, representing the six Haida values of interconnectedness, seeking wise counsel, reciprocity, balance, respect, and responsibility, is used to guide the research in addition to serving as the foundation for a new, culturally responsive, version of PALS.
The dark side of the Higgs boson
Creators: name: Low, Ian
name: Schwaller, Pedro
name: Shaughnessy, Gabe
name: Wagner, Carlos E. M.
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: Current limits from the Large Hadron Collider exclude a standard model-like Higgs mass above 150 GeV, by placing an upper bound on the Higgs production rate. We emphasize that, alternatively, the limit could be interpreted as a lower bound on the total decay width of the Higgs boson. If the invisible decay width of the Higgs is of the same order as the visible decay width, a heavy Higgs boson could be consistent with null results from current searches. We propose a method to infer the invisible decay of the Higgs by using the width of the measured h to ZZ to 4l lineshape, and study the effect on the width extraction due to a reduced signal strength. Assuming the invisible decay product is the dark matter, we show that minimal models are tightly constrained by limits from Higgs searches at the LHC and direct detection experiments of dark matter, unless the relic density constraint is relaxed.
description: 21 pages, 7 pages
Additional file 1 of The impact of fasting stress hyperglycemia ratio, fasting plasma glucose and hemoglobin A1c on in-hospital mortality in patients with and without diabetes: findings from the China acute myocardial infarction registry
Creators: name: Cui, Kongyong
name: Fu, Rui
name: Yang, Jingang
name: Xu, Haiyan
name: Yin, Dong
name: Song, Weihua
name: Wang, Hongjian
name: Zhu, Chenggang
name: Feng, Lei
name: Wang, Zhifang
name: Wang, Qingsheng
name: Lu, Ye
name: Dou, Kefei
name: Yang, Yuejin
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Plant Biology
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1: Table S1. Members of committees and teams. Table S2. Investigators in the CAMI registry. Table S3. Baseline characteristics of patients with diabetes according fasting SHR  levels. Table S4. Baseline characteristics of patients without diabetes according fasting SHR levels.
Establishing Analogies between the Physics of Extra Dimensions and Carbon Nanotubes
Creators: name: de Woul, Jonas
name: Merle, Alexander
name: Ohlsson, Tommy
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We point out a conceptual analogy between the physics of extra spatial dimensions and the physics of carbon nanotubes which arises for principle reasons, although the corresponding energy scales are at least ten orders of magnitude apart. For low energies, one can apply the Kaluza-Klein description to both types of systems, leading to two completely different but consistent interpretations of the underlying physics. In particular, we discuss in detail the Kaluza-Klein description of armchair and zig-zag carbon nanotubes. Furthermore, we describe how certain experimental results for carbon nanotubes could be re-interpreted in terms of the Kaluza-Klein description. Finally, we present ideas for new measurements that could allow to probe concepts of models with extra spatial dimensions in table-top experiments, providing further links between condensed matter and particle physics.
description: 5 pages, 1 figure; references updated, title changed according to referee's suggestion; content matches published version
Towards a revised theory of collective learning processes:
Creators: name: Forchtner, Bernhard
name: Engelken-Jorge, Marcos
name: Eder, Klaus
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: blocked learning
subject: communicative action
subject: Habermas
subject: populism
subject: public sphere
subject: 300 Sozialwissenschaften

description: Societies change; and sociology has, since its inception, described and evaluated these changes. This article proposes a revised theory of collective learning processes, a conceptual framework which addresses ways in which people make sense of and cope with change. Drawing on Habermas’ classic proposal, but shifting the focus from argumentation towards storytelling, it explains how certain articulations allow for collective learning processes (imagining more inclusive orders), while others block learning processes (imagining more exclusive orders). More specifically, the article points to narrative genres (romance, tragedy, comedy and irony) which organize feelings and shape the social bond, proposing that ironic and tragic stories have the potential to trigger collective learning processes, while romantic and comic stories tend to block them.
Total Acid Number Reduction of Alberta McMurray Formation SAGD Bitumen Using Mechanochemically Synthesized Petroleum Coke Hybrid Nanocomposite Catalyst
Creators: name: Pryde, Robert L.
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: total acid number
subject: bitumen upgrading
subject: catalytic esterification
subject: mechanochemistry
subject: petroleum coke
subject: Engineering--Chemical
subject: Engineering--Materials Science
subject: Engineering--Industrial
subject: Engineering--Environmental

description: Opportunity oils, specifically bituminous crude produced via thermal in situ Steam Assisted Gravity Drainage (SAGD), are considered low quality due to high Total Acid Number (TAN). Catalytic esterification with methanol can improve the quality of crude oil to meet pipeline specification TAN, potentially minimizing netback penalties (estimated global range of USD $1to $10 per barrel) subjected to upstream producers, while also reducing the naphthenic acid corrosivity in downstream refining and upgrading. Based on Alberta Energy Regulator (AER) datafrom 2021, approximately 1.40MM barrels per day of thermal in situ and 0.54MM barrels per day of surface mine high TAN (>1) bituminous crude oil production capacity exists in Alberta. Usingan assumed penalty of USD $2 per barrel, the economic impact of TAN on Alberta’s oil industrycould be upwards of USD $1.4B per year. A solid acid catalyst support derived from wastepetroleum coke, produced from Alberta oil sands mining delayed coking carbon rejectionupgrading, was developed, and tested. The catalyst is a unique hybrid nanocomposite materialproduced via top-down mechanochemical synthesis methodology to decorate, and activate, iron(II,III) oxide magnetite nanoparticles on petroleum coke, which is a new material with no previous reported studies in literature related to TAN reduction via esterification. Lewis acidity isintroduced via magnetite nanoparticle comminution, or fracturing, during mechanochemical high energy planetary ball milling producing an active catalyst for the esterification of highly acidic model compound distillate and SAGD produced bituminous crude from the Alberta McMurray formation. The catalyst, denoted as Fe3O4@PC, is a weak Lewis acid catalyst with a surface area of approximately 170 m2/g and total acidity of 1.80 mmol/g. The acidity of bituminous crude was reduced to below pipeline specification (TAN ?1.1) from TAN 2.25 mg KOH/g to 0.74 mg KOH/g at 200ºC, 4.8 MPa (gauge), using the developed catalyst, with methanol in a batch reactor.
Inteligencia artificial e integridad académica: Explorando las implicancias éticas de las herramientas de escritura algorítmicas
Creators: name: Eaton, Sarah Elaine
name: Moya, Beatriz Antonieta
Publisher: name: Werklund School of Education
Year: 2023
Subjects: Inteligencia artificial
integridad académica
educación superior

description: Esta presentación se orienta a compartir con la comunidad hispanoparlante algunos aspectos claves relativos al proyecto liderado por la Dra. Sarah Elaine Eaton de la Universidad de Calgary llamado “Inteligencia artificial e integridad académica: Explorando las implicancias éticas de las herramientas de escritura algorítmicas”. Los participantes de esta presentación conocerán cómo se gestó el proyecto, quienes integran el equipo de investigadores, cuáles son los principales objetivos del proceso de investigación y los resultados esperados del proyecto. Además, se darán a conocer los avances del proyecto, con foco en los resultados de los productos de investigación desarrollados hasta la fecha, los fondos adjudicados y las actividades de movilización de conocimiento desarrolladas por los miembros del equipo de investigación. Al cierre, compartiremos además nuestras visiones y recomendaciones para el futuro en torno al uso ético de las herramientas de inteligencia artificial en el ámbito educativo.
Influence of manufacturing-induced defects on the fatigue performances of autoclave moulded laminates
Creators: name: Maragoni, L.
name: Carraro, P. A.
name: Quaresimin, M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: In the present work, cross-ply and multidirectional laminates were produced by autoclave moulding. Changes in the process parameters led to different microstructural features in terms of fibre volume fraction, global void content, and void size. Fatigue tests revealed a strong influence of the microstructure on the long-term performances of the laminates, in terms of life to crack initiation, crack propagation, crack density evolution and associated stiffness drop. A criterion recently proposed by the authors to predict the formation of the first fatigue cracks accounting for the actual material microstructure, including voids, was then validated on the new experimental data. The results show the need to properly account for the manufacturing induced defects for a more efficient and safer design of composite parts, and remark the necessity of developing models that link manufacturing process parameters, micro-scale morphology, and mechanical performances to enable a cost-effective production that maximizes the performance/cost ratio.
Calculation of fermion loops for $η^\prime$ and nucleon scalar and electromagnetic form factors
Creators: name: Alexandrou, C.
name: Hadjiyiannakou, K.
name: Koutsou, G.
name: Cais, A. 'O
name: Strelchenko, A.
Publisher: name: arXiv
Year: 2011
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: The exact evaluation of the disconnected diagram contributions to the flavor-singlet pseudoscalar meson mass, the nucleon sigma term and the nucleon electromagnetic form factors, is carried out utilizing GPGPU technology with the NVIDIA CUDA platform. The disconnected loops are also computed using stochastic methods with several noise reduction techniques. Various dilution schemes as well as the truncated solver method are studied. We make a comparison of these stochastic techniques to the exact results and show that the number of noise vectors depends on the operator insertion in the fermionic loop.
description: Version accepted for publication in Comp. Phys. Commun. References added. 13 pages, 12 figures
Dirac Leptogenesis with a Non-anomalous $U(1)^{\prime}$ Family Symmetry
Creators: name: Chen, Mu-Chun
name: Huang, Jinrui
name: Shepherd, William
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a model for Dirac leptogenesis based on a non-anomalous $U(1)^{\prime}$ gauged family symmetry. The anomaly cancellation conditions are satisfied with no new chiral fermions other than the three right-handed neutrinos, giving rise to stringent constraints among the charges. Realistic masses and mixing angles are obtained for all fermions. The model predicts neutrinos of the Dirac type with naturally suppressed masses. Dirac leptogenesis is achieved through the decay of the flavon fields. The cascade decays of the vector-like heavy fermions in the Froggatt-Nielsen mechanism play a crucial role in the separation of the primodial lepton numbers. We find that a large region of parameter space of the model gives rise to a sufficient cosmological baryon number asymmetry through Dirac leptogenesis.
description: 8 pages, 8 figures, version to appear in JHEP