cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pade approximation of the S-matrix as a way of locating quantum resonances and bound states
Creators: name: Rakityansky, S. A.
name: Sofianos, S. A.
name: Elander, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that the spectral points (bound states and resonances) generated by a central potential of a single-channel problem, can be found using rational parametrization of the S-matrix. To achieve this, one only needs values of the S-matrix along the real positive energy axis. No calculations of the S-matrix at complex energies or a complex rotation are necessary. The proposed method is therefore universal in that it is applicable to any potential (local, non-local, discontinuous, etc.) provided that there is a way of obtaining the S-matrix (or scattering phase-shifts) at real collision energies. Besides this, combined with any method that extracts the phase-shifts from the scattering data, the proposed rational parametrization technique would be able to do the spectral analysis using the experimental data.
description: 20 pages, 6 figures
Additional file 3 of General health and working conditions of Flemish primary care professionals
Creators: name: Buffel, Veerle
name: Sirimsi, Muhammed Mustafa
name: De Vriendt, Patricia
name: Van de Velde, Dominique
name: Lahousse, Lies
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Science Policy
classificationCode: 111714
subject: Mental Health

description: Additional file 3.
Respiratory Organisms among Patients with and without Respiratory Illnesses during COVID-19 Pandemic. (ROPRICoP)
Creators: name: Jeffrey Soon-Yit Lee1,2*,
name: Joyce Beng-Yee Hii1*,
name: Shie-Lih Tang
name: Siew-Ming Ting
name: Chew-Ee Wong
name: Dahian, Kamilah
name: Mohan, Anand
name: See-Chang Wong
name: Toh-Mee Wong
name: Ing-Tien Wong
name: Jo-Hun Teh
name: Teck-Hock Toh
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19; pathogens; respiratory illness

description: Introduction: Common respiratory viruses and bacteria still circulate and potentially contribute to hospital admission during COVID-19 pandemic. We investigated the prevalence of pathogens among patients with symptomatic respiratory illnesses, during the second wave of COVID-19 in Central Sarawak compared to the asymptomatic population. Methods: We conducted a case-control study using archived nasopharyngeal swab (NPS) specimens from severe acute respiratory illness (SARI) and influenza-like illness (ILI) patients and surveillance population in Sibu Hospital and Bintulu Hospital between 15 March and 30 June 2020. The specimens were examined for common respiratory viruses and bacteria using a commercial PCR assay. Results: Of 434 NPS specimens, 269 (62·0%) were female; 61 (14·1%) were below 18 years old, while 27.0% (n=117) patients were older than 65 years old. Majority of the patients were symptomatic (306, 70·5%). Symptomatic patients were more likely to have positive virus results with an odds ratio (OR) of 4.46 (95% CI: 1.87, 10.64, p <0.001). In contrast, there was no significant difference in the prevalence of bacteria in both groups of patients (p>0.005). The three commonest viruses detected were human rhinovirus, adenovirus, and respiratory syncytial virus (RSV); for bacteria they were Streptococcus pneumoniae and Haemophilus influenzae. Conclusion: Amidst the ongoing COVID-19 pandemic, there was a high prevalence of pathogens among patients with symptomatic respiratory illness and asymptomatic population during COVID-19 pandemic. Virus-positive patients, specifically RSV and adenovirus, were more likely to get symptoms during the COVID-19 pandemic. Bacteria from nasopharyngeal swabs appear to be commensal rather than pathogenic.

description: This poster was submitted to the 14th National Conference for Clinical Research (NCCR) on August 18-20 2021. https://nccrconference.com.my/
Giant reflection band and anomalous negative transmission in a resonant dielectric grating slab: application to a planar cavity
Creators: name: Pilozzi, L.
name: Schiumarini, D.
name: Tomassini, N.
name: D'Andrea, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The fundamental optical effects that are at basis of giant reflection band and anomalous negative transmission in a self-sustained rectangular dielectric grating slab in P polarization and for incidence angle not very far from the Brewster's angle of the equivalent slab, are investigated. Notice, that the self sustained dielectric grating slab is the simplest system that, due to the Bragg diffraction, can show both the former optical effects. A systematic study of its optical response is performed by an analytical exact solution of the Maxwell equations for a general incidence geometry. At variance of the well known broad reflection bands in high contrast dielectric grating slab in the sub-wavelength regime, obtained by the destructive interference between the travelling fundamental wave and the first diffracted wave (a generalization of the so called second kind Wood's anomalies), the giant reflection band is a subtle effect due to the interplay, as well as among the travelling fundamental wave and the first quasi-guided diffracted one, also among the higher in-plane wave- vector components of the evanescent/divergent waves. To better describe this effect we will compare the optical response of the self-sustained high contrast dielectric grating slab with a system composed by an equivalent homogeneous slab with a thin rectangular high contrast dielectric grating engraved in one of the two surfaces, usually taken as a prototype for the second kind Wood's anomalies generation. Finally, the electromagnetic field confinement in a patterned planar cavity, where the mirrors are two self-sustained rectangular dielectric grating slabs, is briefly discussed.
description: 14 pages, 12 figures, submitted to Phys. Rev. B
On the Parameterized Intractability of Monadic Second-Order Logic
Creators: name: Kreutzer, Stephan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.4.1

description: One of Courcelle's celebrated results states that if C is a class of graphs of bounded tree-width, then model-checking for monadic second order logic (MSO_2) is fixed-parameter tractable (fpt) on C by linear time parameterized algorithms, where the parameter is the tree-width plus the size of the formula. An immediate question is whether this is best possible or whether the result can be extended to classes of unbounded tree-width. In this paper we show that in terms of tree-width, the theorem cannot be extended much further. More specifically, we show that if C is a class of graphs which is closed under colourings and satisfies certain constructibility conditions and is such that the tree-width of C is not bounded by \log^{84} n then MSO_2-model checking is not fpt unless SAT can be solved in sub-exponential time. If the tree-width of C is not poly-logarithmically bounded, then MSO_2-model checking is not fpt unless all problems in the polynomial-time hierarchy can be solved in sub-exponential time.
Additional file 4 of General health and working conditions of Flemish primary care professionals
Creators: name: Buffel, Veerle
name: Sirimsi, Muhammed Mustafa
name: De Vriendt, Patricia
name: Van de Velde, Dominique
name: Lahousse, Lies
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Science Policy
classificationCode: 111714
subject: Mental Health

description: Additional file 4.
Improved Arithmetic in the Ideal Class Group of Imaginary Quadratic Number Fields with an Application to Integer Factoring
Creators: name: Sayles, Maxwell
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Computer Science
subject: Ideal Class Group
subject: Quadratic Field
subject: Integer Factoring

description: This thesis proposes practical improvements to arithmetic and exponentiation in the ideal class group of imaginary quadratic number fields for the Intel x64 architecture. This is useful in tabulating the class number and class group structure, but also as an application to a novel integer factoring algorithm called “SuperSPAR”. SuperSPAR builds upon SPAR using an idea from Sutherland, namely a bounded primorial steps search, as well as by using optimized double-based representations of exponents, and general improvements to arithmetic in the ideal class group. Since the target architecture has 64 bit machine words, we specialize two implementations of ideal class arithmetic: one using 64 bit arithmetic, and the other using 128 bit arithmetic. In each case, our results show an improvement in the average performance of ideal class arithmetic over reference implementations. Since much of the effort of ideal class arithmetic is in computing the extended greatest common divisor, this thesis studies the average performance of several implementations of this and shows an improvement for some over reference implementations. Dimitrov and Cooklev propose the double base number system, and Imbert, Jacobson, and Schmidt propose a method of ideal class cubing. Using these ideas, we explore several techniques for exponentiation using 2,3 number systems and demonstrate an improvement in the average performance of exponentiation in the ideal class group over that of binary exponentiation. Lastly, each of these improvements are applied to our implementation of the SuperSPAR factoring algorithm, and our results show an improvement in the average time to factor integers 49 bits to 62 bits in size.
Assessment and Analysis of a Novel Intake for a Ramjet Engine
Creators: name: Wilson, Steven James
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Aerospace
subject: Engineering--Mechanical
subject: Aerospace
subject: CFD
subject: Ramjet
subject: Ejector
subject: Exergy
subject: Entrainment

description: The Atlantis Intake System (AIS) is a novel intake design intended to supply a combustible fuel/air mixture to a ramjet engine without the use of any moving parts. The operation of the AIS is similar to an ejector pump, it operates via the continuous release of a gaseous fuel jet into a system of inlet stages open to the surrounding ambient air. Interactions between the fuel jet, the intake geometry and the surrounding air result in a relatively high velocity, high pressure, and high temperature combustible mixture entering the intake of a ramjet engine coupled with the intake. A control-volume analysis is used to develop a means of predicting the performance of an AIS coupled ramjet engine given a set of input conditions, to better understand the influence of the controlled variables. This control volume (CV) analysis is expanded to include a method for predicting the ratio of air entrained by the AIS based on the characteristics of the fuel inlet jet and the geometry of the AIS. This model is compared to a series of computational fluid dynamic (CFD) simulations, and shows strong agreement in terms of the ratio of air entrained. The potential for the use of the models as a tool for rapid assessment of multiple AIS designs is discussed. An exergetic analysis tool is developed and utilized on the results of the CFD simulations to quantify the dominant sources of exergy destruction. The results are to be used as a guide to better optimize the AIS.
Quantifying Energy Storage Considerations in a Weak Grid-Connected Ocean Wave Energy System
Creators: name: Wu, Eric
Publisher: name: Graduate Studies
Year: 2017
Subjects: Engineering
Engineering--Electronics and Electrical
Engineering--Marine and Ocean

description: Wave Energy Converters (WECs) convert the oscillations of ocean waves into electricity. In wave energy systems, the sinusoidal nature of ocean waves produces intermittent power flow at the Point of Common Coupling (PCC) unsuitable for weak grids. To adequately smooth the aggregated power injected into a weak grid, energy storage is needed for capacity firming. The storage size will vary based on the quantity of WECs, the location of storage, the type of storage, the time-shifts between the torque inputs of WECs and the amount of smoothing desired. The impacts of these factors on storage size and on output power quality are quantified in this thesis by modeling four wave energy systems operating under these conditions. According to the results, as the quantity of WECs and the smoothing requirement increases, the storage requirements at the PCC and at the system DC Link become nearly identical.
The Effect of Maternal COVID-19 Vaccination on Breastfeeding Infants
Creators: name: LEE Jeffrey Soon-Yit
name: LO Chai Lian
name: LIM Rainie
name: THANASEGARAN Srivithiya
name: WONG April Ling-Siew
name: TOH Teck-Hock
Publisher: name: Zenodo
Year: 2021
Subjects: COVID-19 vaccination; maternal

description: Introduction: There are concerns about the effect of COVID-19 vaccination on breastfeeding women and their infants. This study aims to describe the effect of maternal COVID-19 vaccination on breastfeeding practices and their infants. Methods: We analysed data of breastfeeding women on the type and doses of vaccine, and the presence of symptoms in their infants, from 1) Sibu Hospital’s online, self-reported adverse reaction database; 2) case records of consultation from breastfeeding women after vaccination from March to May 2021. Results:  Sixty-five breastfeeding women were identified. Fifty-nine (90.8%) received the Comirnaty® vaccine, while the rest received CoronaVac®. The infants' mean (SD) age was 9.1 (6.90) months, the youngest is two months. Majority (n=56, 86.2%) of the mothers did not delay breastfeeding after both vaccinations. Nine mothers delayed breastfeeding (three by six hours, two each by one and seven days, and one each by two and three days). All respondents denied changes in the infant's breastfeeding duration and breastmilk production. Five infants (median age 8.0 months, IQR 12.00 months) had symptoms after the Comirnaty® vaccine: irritability (n=3, 60.0%), rhinorrhoea (n=1, 20.0%) and rash (n=1, 20.0%). Three mothers of infants with symptoms did not delay breastfeeding after vaccination, while two mothers delayed for maximum of three days. One infant (1.5%) required hospitalisation for rash, which was thought to be due to cow's milk protein intolerance. The symptoms resolved within one day without any medication. Discussion/conclusion: We found that the COVID-19 vaccination was well accepted by most breastfeeding mothers. Some reported adverse events in infants were mild and self-limiting. We conclude that COVID-19 vaccination is safe and should be an acceptable practice for breastfeeding mothers. [Disclaimer: Abstract text might vary slightly from what is displayed in the e-poster]
description: This poster was submitted to the 14th National Conference for Clinical Research (NCCR) on August 18-20 2021. https://nccrconference.com.my/
The application of Graphene as a sample support in Transmission Electron Microscopy
Creators: name: Pantelic, R. S.
name: Meyer, J. C.
name: Kaiser, U.
name: Stahlberg, H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Transmission electron microscopy has witnessed rampant development and surging point resolution over the past few years. The improved imaging performance of modern electron microscopes shifts the bottleneck for image contrast and resolution to sample preparation. Hence, it is increasingly being realized that the full potential of electron microscopy will only be realized with the optimization of current sample preparation techniques. Perhaps the most recognized issues are background signal and noise contributed by sample supports, sample charging and instability. Graphene provides supports of single atom thickness, extreme physical stability, periodic structure, and ballistic electrical conductivity. As an increasing number of applications adapting graphene to their benefit emerge, we discuss the unique capabilities afforded by the use of graphene as a sample support for electron microscopy.
description: Review, to appear in solid state communications
title: Pseudospin-2 in photonic chiral borophene
Creators: name: Menz, Philip
name: Hanafi, Haissam
name: Leykam, Daniel
name: Imbrock, Jörg
name: Denz, Cornelia
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2023
Subjects: subject: 530 Physics

description: Pseudospin is an angular momentum degree of freedom introduced in analogy to the real electron spin in the effective massless Dirac-like equation used to describe wave evolution at conical intersections such as the Dirac cones of graphene. Here, we study a photonic implementation of a chiral borophene allotrope hosting a pseudospin-2 conical intersection in its energy–momentum spectrum. The presence of this fivefold spectral degeneracy gives rise to quasiparticles with pseudospin up to ±2. We report on conical diffraction and pseudospin–orbit interaction of light in photonic chiral borophene, which, as a result of topological charge conversion, leads to the generation of highly charged optical phase vortices.
description: Finanziert durch den Open-Access-Publikationsfonds der Universität Münster.
Cell Complexes: The Structure of Space and the Mathematics of Modularity
Creators: name: Lane, Brendan Joseph
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Computer Science
subject: cell complex
subject: developmental modeling
subject: topological data structure

description: The modeling of growing multicellular structures is of fundamental importance in investigating plant development. A distinctive feature of plants is that, with rare exceptions, cells do not move with respect to each other; the only differences in tissue topology are due to cell divisions. Corresponding features are found in other application domains, such as geometric modeling. Models from these diverse domains, taken together, constitute the field of developmental modeling. This dissertation is concerned with devising a mathematical and computational formalism for such modeling. Examining simple examples of one-dimensional models shows that the mathematical structure of the cell complex is ideal for developmental modeling. The cell complex consists of mathematical cells of different dimensions, letting physical quantities of different inherent dimension sit in their proper place in the structure. A cell complex can be represented in an index-free manner, and topological operations on it, including the important case of cell division, can be effected in a local manner. Finally, the cell complex is built on neighbourhood relations which let developmental rules easily access values in neighbouring cells. A novel data structure, the flip, records a single adjacency between cells in a cell complex; a flip table, the collection of all flips in the complex, is in turn sufficient to represent the complex itself. This representation is used to build the Cell Complex Framework, a C++ API which can be used for computational modeling of development in any number of dimensions. The framework provides basic operations such as iterating over a cell complex, adding, removing, dividing, and merging cells, and computing geometric information such as orientation, measure, and centroid. Some developmental models from the existing literature, in both two and three dimensions, are reproduced using the Cell Complex Framework, demonstrating its workability and expressiveness; these include both geometric models as well as models of biological systems. New models are also shown, including a model of turtle geometry on the surface of a 2D mesh and a three-dimensional model of the apex of the moss Physcomitrella patens.
Additional file 1 of The microbiota knows: handling-stress and diet transform the microbial landscape in the gut content of rainbow trout in RAS
Creators: name: Suhr, Marvin
name: Fichtner-Grabowski, Finn-Thorbjörn
name: Seibel, Henrike
name: Bang, Corinna
name: Franke, Andre
name: Schulz, Carsten
name: Hornburg, Stéphanie Céline
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1. S1 to S5. Performance parameters and additional figures (S1 to S5)
Neural Areas of Activation During Clinical Reasoning and Decision Making
Creators: name: Hruska, Pamela
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Education
subject: Education--Health
subject: Psychology--Cognitive
subject: fMRI
subject: Medical Education
subject: Clinical Reasoning
subject: Clinical Decision Making

description: Background: Neural areas of activation involved in clinical reasoning and decision making were assessed using functional magnetic resonance imaging (fMRI) in novice and expert clinicians as they reasoned through and assigned clinical diagnoses to sixteen different clinical cases (eight easy, and eight hard). Results: During the clinical reasoning phase, novices had increased activation in the left anterior temporal cortex during easy and hard clinical cases, and the prefrontal cortex during hard clinical cases. There were no significant differences in brain activity between groups during clinical decision making for the easy cases. During clinical diagnoses on hard cases, novices had increased left anterior temporal cortex and left ventrolateral prefrontal cortex activation, whereas experts had increased activations in the right parietal cortex and right dorsolateral and ventrolateral prefrontal cortex. Conclusion: Two modifiers of neural activation during clinical reasoning and clinical diagnoses include clinician level of expertise and task difficulty. Novice clinicians rely more heavily on semantic memory, when reasoning and as well demand more working memory (WM) when reasoning through cases. While both novices and experts demand use of the pre frontal cortex (PFC) during decision making, differences in hemispheric activations could suggest WM and supporting areas of the PFC evolve from use of semantic, factual knowledge that is rule-based guided by basic causal explanations in novices, to processes dedicating more attention to evaluative assessment in experts where comparisons between exemplars with more internal experiences are used.
Cell surface iron-complex binding and transport by Staphylococcus aureus
Creators: name: Grigg, Jason Christopher
Publisher: name: University of British Columbia
Year: 2010

description: Iron uptake systems are paramount to the survival of many organisms. Pathogenic bacteria are faced with the especially daunting task of acquiring essential iron within their host environment. Staphylococcus aureus is a Gram-positive bacterial pathogen and one of the most common causes of bacterial infections in hospitals. In addition, multi-drug resistant S. aureus isolates are emerging and now constitute the majority of isolated strains from clinical settings. The prevalence of S. aureus is attributed, in part, to its ability to specifically use most host iron sources for growth. S. aureus uses high affinity uptake systems for many different forms of iron in the human body with the source preference varying through the time course of infection and the tissues infected. To gain insight into iron binding and import by S. aureus, surface receptors from the iron surface determinant (Isd) heme uptake system and the staphyloferrin A siderophore uptake systems (unfortunately named heme transfer system (Hts)) were studied. The systems use distinct methods for ligand import. In the Isd system, heme is received and relayed through cell wall anchored proteins (including IsdA) to the substrate binding protein (IsdE) for import through the permease. Crystal structures of IsdA and IsdE in complex with heme, in concert with in vitro heme transfer kinetics contributed to the development of a heme transfer model for NEAT domains. In contrast to heme uptake, staphyloferrin A is bound directly at the substrate binding protein (HtsA). HtsA and IsdE are homologous membrane anchored binding proteins and both receive and deliver the iron-complex to the permease. Crystal structures and ligand affinity measurements of IsdE and HtsA reveal distinct mechanisms for ligand reception and specificity. Furthermore, crystal structures of open and closed conformations of HtsA highlight unique structural changes proposed to enable discrimination by the permease of ligand-bound and -free receptor. These studies provide insight into iron import in S. aureus, which have contributed to the development of models for heme and siderophore transport from the cell surface to the permease.
The S_3 flavor symmetry in 3-3-1 models
Creators: name: Dong, P. V.
name: Long, H. N.
name: Nam, C. H.
name: Vien, V. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose two 3-3-1 models (with either neutral fermions or right-handed neutrinos) based on S_3 flavor symmetry responsible for fermion masses and mixings. The models can be distinguished upon the new charge embedding (\mathcal{L}) relevant to lepton number. The neutrino small masses can be given via a cooperation of type I and type II seesaw mechanisms. The latest data on neutrino oscillation can be fitted provided that the flavor symmetry is broken via two different directions S_3 \rightarrow Z_2 and S_3 \rightarrow Z_3 (or equivalently in the sequel S_3 \rightarrow Z_2 \rightarrow Identity), in which the second direction is due to a scalar triplet and another antisextet as small perturbation. In addition, breaking of either lepton parity in the model with neutral fermions or lepton number in the model with right-handed neutrinos must be happened due to the \mathcal{L}-violating scalar potential. The TeV seesaw scale can be naturally recognized in the former model. The degenerate masses of fermion pairs (μ, τ), (c, t) and (s, b) are respectively separated due to the S_3 \rightarrow Z_3 breaking.
description: 26 pages
Cleptes semicyaneus Tournier 1879
Creators: name: Paukkunen, Juho
name: Rosa, Paolo
name: Soon, Villu
name: Johansson, Niklas
name: Ødegaard, Frode
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eulophidae
Cleptes
Cleptes semicyaneus

description: 2. Cleptes semicyaneus Tournier, 1879
Cleptes semicyanea Tournier 1879: 88. Holotype ♂; Russia: Sarepta (MHNG) (examined).
Cleptes semicyaneus: Soon 2004: 44, Ødegaard et al. 2009: 41, Fritz & Larsson 2010: 151, Artsdatabanken 2010, Allearter.dk 2010, Hansen et al. 2010: 338, Ødegaard et al. 2011: 64, Rosa & Soon 2012.
Material examined. Denmark: NEJ: Skagen, VI.1839, 1 ♀ (Schiödte); NEZ: Tisvilde, Stengehus, 24.VI.1970, 1 ♀ (H. Enghoff).
Distribution. Denmark, Norway, Sweden.—Transpalearctic: from West Europe to Siberia (Irkutsk) (Móczár 1997).
Remarks. The species has been recorded from two localities in Denmark (see data above), two localities in southern Norway (VAY: Lista and RY: Jaeren) (Ødegaard et al. 2009), and one locality in southwest Sweden (Halland) (Fritz & Larsson 2010). The closest records outside the Nordic countries are from northern Poland (Pomerania) (Noskiewicz & Puławski 1958). In Norway, the species has been classified as vulnerable (Hansen et al. 2010).
description: Published as part of Paukkunen, Juho, Rosa, Paolo, Soon, Villu, Johansson, Niklas & Ødegaard, Frode, 2014, Faunistic review of the cuckoo wasps of Fennoscandia, Denmark and the Baltic countries (Hymenoptera: Chrysididae), pp. 1-67 in Zootaxa 3864 (1) on pages 8-9, DOI: 10.11646/zootaxa.3864.1.1, http://zenodo.org/record/4930433
Hamiltonian Structures for the Ostrovsky-Vakhnenko Equation
Creators: name: Brunelli, Jose Carlos
name: Sakovich, Sergei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We obtain a bi-Hamiltonian formulation for the Ostrovsky-Vakhnenko equation using its higher order symmetry and a new transformation to the Caudrey-Dodd-Gibbon-Sawada-Kotera equation. Central to this derivation is the relation between Hamiltonian structures when dependent and independent variables are transformed.
description: 13 pages
Essays on the Economics of Adaptation to Climate Change
Creators: name: Zapata, Oscar
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Education--Social Sciences
subject: Economics
subject: Climate Change
subject: Adaptation
subject: water consumption
subject: happiness
subject: religiosity

description: Climate change is currently one of the most important challenges for global society. Expected effects of climate change include changes in climate patterns and disasters that affect wellbeing through changes in consumption and production levels, individual preferences and beliefs, and direct exposure to climate conditions. Mitigation of and adaptation measures to climate change are aimed at preserving the individual and social welfare in society. The latter refers to measures that allow individuals to adjust to changing climate conditions. Although research in mitigation of climate change has considerably increased recently, studies on the economics of adaptation to climate change remain scant. This dissertation provides evidence on individual mechanisms for adaptation to climate change from the lenses of economics. I study how climate conditions affect people’s wellbeing and consumption patterns, and how climate disasters influence individual preferences. Specifically, these studies look at individual economic responses to climate conditions and climate disasters. The three studies in this dissertation cover the following topics: 1) The effect of climate on residential water demand, which constitutes an indirect effect of climate conditions on individual welfare through changes in consumption patterns. Temperature has a large and significant effect on residential water demand, whereas precipitation and humidity have a small effect. Temperature also has a stronger effect on water demand among low-income households. 2) The effect of climate on happiness to approach the exposure effect of climate on individuals’ comfort, which constitutes a direct effect on welfare. Climate constitutes an important determinant of people’s overall and health happiness after controlling for economic and social conditions. While the effect of heat on overall happiness adopts an inverted-U shape, the effect of heat on health happiness can be represented by a U-shape. And, 3) the effect of climate disasters on people’s religiosity that constitutes an effect on individual preferences and that refers to the role of religion as a mechanism to cope with adversity in disasters. The frequency of disasters and their impacts have different effects on religious preferences: while the number and the economic costs of disasters erode religion preferences, human losses increase the intensity of their religious preferences among religious individuals.
Optimizing information flow in small genetic networks. III. A self-interacting gene
Creators: name: Tkačik, Gašper
name: Walczak, Aleksandra M
name: Bialek, William
Publisher: name: arXiv
Year: 2011
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Living cells must control the reading out or "expression" of information encoded in their genomes, and this regulation often is mediated by transcription factors--proteins that bind to DNA and either enhance or repress the expression of nearby genes. But the expression of transcription factor proteins is itself regulated, and many transcription factors regulate their own expression in addition to responding to other input signals. Here we analyze the simplest of such self-regulatory circuits, asking how parameters can be chosen to optimize information transmission from inputs to outputs in the steady state. Some nonzero level of self-regulation is almost always optimal, with self-activation dominant when transcription factor concentrations are low and self-repression dominant when concentrations are high. In steady state the optimal self-activation is never strong enough to induce bistability, although there is a limit in which the optimal parameters are very close to the critical point.
description: 18 pages, 9 figures
Search and Destroy Impact on Number of Dengue Cases Based on Breteau Index in Temerloh
Creators: name: Hassan, Mohammad Zainie Bin
name: Zainordin, Ahmad Hibri Bin Hj
name: Hashim, Suzana Binti Mohd
Publisher: name: Zenodo
Year: 2021
Subjects: Dengue; Breteau Index (BI);

description: Introduction: Breteau Index (BI) is a number of positive containers per 100 houses inspected with Aedes larvae and/or pupae. This is the number of containers we searched and destroyed for and found positive for Aedes breeding in the houses. In Temerloh, no study were conducted on the relationship between Breteau Index with number of dengue cases before. Therefore, the objective of this study was to evaluate the association between BI and number of Dengue cases in Temerloh District, Pahang, Malaysia. Hence, to identify the effects of search and destroy on number of dengue cases based on BI in Temerloh. Materials and method: A cross sectional retrospective study was conducted to determined the correlation between Breteau Index with Number of dengue cases in Temerloh, Pahang, Malaysia. All registered dengue cases in e-Denggi were collected as a cumulative data for number of dengue cases in a month according to epid month in Temerloh Health District and data on BI were collected monthly from 2017 to 2018. Total number of dengue cases were calculated. All containers searched either positive or negative for Aedes larval were destroyed once found and documented for calculation of the Breteau Index. Data obtained were analyzed by Spearmen Coefficient Correlation Test (SPSS version 23). P value of <0.05 is considered as statistically significant. Results: A total of 806 dengue cases were registered in eDenggi in the year 2017 to 2018 were included in this study. Both BI and Dengue cases were not normally distributed. BI mean (0.57±0.44) and mean number of dengue cases (34±22) as per Table 1. There was significant negative correlation between BI with number of dengue cases (r=-0.457, p<0.05) as per Table 2. The higher the BI the lowest number of dengue cases as per Figure 1. Discussion / Conclusion: This result implicated that the high Breteau Index had significant association with lowest number of dengue cases. The more containers we searched and destroyed for Aedes breeding the lowest number of dengue cases would be. Therefore, search and destroy had a major impact in reducing dengue cases in Temerloh.

description: This poster was submitted to the 14th National Conference for Clinical Research (NCCR) on August 18-20 2021. https://nccrconference.com.my/
Head and Neck Cancer Survivors' Exercise Preferences and Barriers Before and After Participation in an Exercise Intervention
Creators: name: Jackson, Colleen
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Oncology
subject: Psychology--Behavioral
subject: Head and Neck Cancer
subject: Exercise
subject: Physical Activity
subject: Behaviour change

description: Purpose: This study examined the exercise preferences and barriers of head and neck cancer (HNC) survivors in relation to exercise experience. Methodology: Participants from the ENHANCE trial (n=22) completed questionnaires on exercise preferences and barriers, which were further explored in semi-structured interviews with a subset of participants (n=17). Results: Before participation in the ENHANCE program, lack of interest and time were the primary exercise barriers. After participation, there was a significant decrease in typical barriers including lack of interest (p=.008)), exercise not a priority (p=.039), and not in routine (p=.004). Participants also reported significant increases in preferences for engaging in exercise at a cancer centre (p=.031), and with other survivors (p=.016). Four higher-order themes emerged from interview data analysis pertaining to preferences (exercise types, company, supervision, and logistics), and three higher-order themes regarding barriers (physical, psychological and external). Significance: The results identify key factors for effective HNC exercise program design.
New E77 invariants and amplitudes
Creators: name: Kallosh, Renata
name: Ortin, Tomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a new class of manifest E77 duality invariants, which generalize the Cartan quartic invariant, familiar from studies of the black hole entropy. The new ones, being four-linear, are designed for studies of the four-vector amplitudes and to be used, upon supersymmetrization, as initial sources of deformation for the non-linear higher-derivative generalizations of the linear twisted self-duality condition. We show, however, that the new invariants are inconsistent with the expected UV divergent amplitudes in extended supergravities with non-degenerate duality groups of type E7. When E77 degenerates into U(1) the new invariants reproduce the recently discovered source of deformation for the Born-Infeld duality invariant model with higher derivatives relevant to UV divergences of the D3 brane action. These facts may explain the UV properties of perturbative supergravity.
description: One reference added and one sentence slightly modified. Results and conclusions unchanged, Latex2e file, 39 pages, no figures
A novel mechanism for enhancing tissue oxygen delivery in teleost fishes
Creators: name: Rummer, Jodie Lynn
Publisher: name: University of British Columbia
Year: 2010

description: Teleost fishes represent half of all extant vertebrates and possess a unique Root effect haemoglobin (Hb). The Root effect occurs when a reduction in pH greatly reduces Hb oxygen (O₂) affinity and carrying capacity, and is known to greatly enhance O₂ delivery to specialized structures (retia) at the eye and swimbladder. This phenomenon is thought to be a central component to the most successful adaptive radiation event in the evolutionary history of vertebrates. Here, I propose and demonstrate a role for the Root effect in general O₂ delivery. In Chapter 2, I demonstrated that in rainbow trout blood, which possesses a Root effect, the potential for enhanced O₂ delivery relative to that of an air-breathing vertebrate, such as a human, is an order of magnitude greater for a given arterial-venous blood pH change (ΔpHa-v). However, large ΔpHa-v are generally not thought possible away from retia. In Chapters 3 and 4, I proposed and validated a novel mechanism that induces a large ΔpHa-v at the tissues permitting the Root effect to facilitate general O₂ delivery. During a generalized acidosis, teleosts secure gill O2 uptake by protecting RBC pH via adrenergically-stimulated Na⁺/H⁺ exchange (βNHE). I proposed that short-circuiting βNHE at tissues with plasma-accessible carbonic anhydrase (CA) may create a large ΔpHa-v that could greatly enhance O₂ delivery. In Chapter 3 this was validated in vitro in a closed system. I also validated this mechanism in vivo (Chapter 4), where rainbow trout were implanted with fiber-optic O₂-sensors to monitor red muscle (RM) partial pressure of O₂ (PO₂) in real-time. Resting RMPO increased by 65% following exposure to elevated environmental CO₂ and the associated mild acidosis. This was over 10-times what would be expected in an air-breathing vertebrate, such as a human. Furthermore, the ΔPO₂ was completely abolished in the presence of a CA inhibitor, C18. Thus, in my thesis, I have demonstrated that the Root effect may enhance general tissue O₂ delivery. Given that the Root effect evolved 150-270MY before eye and swimbladder retia, it may be that general O₂ delivery was the initial selection pressure in Root effect evolution.
Evaluation of the XTM setup at the P05 Imaging Beamline at PETRA III using a sample of Nanoporous gold
Creators: name: Larsson, Emanuel
name: Ogurreck, Malte
name: Wilde, Fabian
name: Ziehmer, Markus
name: Hu, Kaixiong
name: Gursoy, Doga
name: Carlo, Francesco De
name: Lilleodden, Erica
name: Müller, Martin
name: Greving, Imke
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2017

description: 24th International Congress on X-ray Optics and Microanalysis, ICXOM24, Trieste, Italy, 25 Sep 2017 - 29 Sep 2017
description: Nanoporous gold (NPG) is the structure resultant from dealloying an Ag-rich AgAu alloy. It displays a high specific surface area, high electrical conductivity and good mechanical properties, making it very interesting for sensing and actuating applications [1]. The structural length-scales of NPG can be tailored to different structural thicknesses ranging from 20 nm up to 1 μm, which allows a tailorable mechanical response [2]. Recent Focused Ion Beam (FIB) based tomography measurements have identified critical topological characteristics shown to correlate to mechanical response [1-2]. However, the destructive nature of the method negates the possibility to investigate the evolution of the network structure with deformation. X-ray Tomographic Microscopy (XTM) on the other hand allows for in situ observation of the 3D nanostructural evolution during mechanical testing. Since gold is high absorbing for X-rays, NPG is also an optimal sample for evaluating the capability of an XTM setup.A NPG sample was scanned with XTM at the P05 beamline at Petra III, to determine the inner structure of the sample. One major challenge in XTM is the overall stability of the setup, e.g. to minimize sample drifts and time-induced shifts from e.g. the motorized sample stages. In order to achieve the best possible data reconstruction even small shifts have to be corrected for. Therefore, projection images were first corrected for horizontal and vertical shifts [3], whereinafter the data was reconstructed with TomoPy, using an iterative reconstruction algorithm [4]. Morphological structure parameters such as Percentage Volume (VV), Structure thickness (St.Th), Specific Surface Area (SV) of NPG were evaluated using Pore3d [5] and compared to parameters obtained by FIB based tomography [2]. NPG is an optimal material for evaluating and improving the capabilities of the XTM setup at the P05 Beamline at PETRA III, which will also be presented more in detail.
Defining a Role for the Smc5/6 Complex Component Nse5 in DNA Replication and DSB Repair
Creators: name: Bustard, Denise
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Biology--Molecular
subject: DNA repair

description: The Smc5/6 complex is a member of the Structural Maintenance of Chromosomes (SMC) family of proteins that provides support and organization to chromatin. While other SMC family complexes, such as cohesin and condensing, have each been extensively studied, relatively little is known about the function of the Smc5/6 complex. In addition to core heterodimer Smc5 and Smc6, six additional non-SMC elements (Nse1-6) exist in this complex, one of which (Nse2/Mms21) is an E3 small ubiqutitin modifier (SUMO) ligase. Here we investigate the multifaceted roles of the Smc5/6 complex in the face of genotoxic stress, and assess the contribution of the Nse5 component in facilitating these functions. We find that upon treatment of cells with replication inhibitor hydroxyurea, the Smc5/6 complex is recruited genome-wide to stalled replication forks and is crucial in preventing fork collapse. When fork collapse does occur, the Smc5/6 complex appears to be important in resolving Rad51-dependent X-shaped DNA structures, thought to be HR intermediates. Nse5 is crucial in maintaining Smc5/6 complex integrity, and in promoting SUMOylation of Smc5; however, in the face of replication stress, only Smc5/6 complex integrity is essential. Altogether our data indicate two distinct roles for the Smc5/6 complex at stalled forks: in preventing collapse, and in resolving toxic X-shaped DNA structures. We have additionally described a central role for the Smc5/6 complex in regulating chromatin dynamics following generation of an irreparable DSB. In the absence of functional Smc5/6 complex, movement to both the Nuclear Pore Complex (NPC) and envelope-bound Mps3 is completely impaired. We have narrowed down Smc5/6 complex function to two separate roles: Mms21-dependent SUMOylation at the break site, and Nse5-dependent recruitment of SUMO targeting ubiquitin ligase Slx5 to break sites. Additionally we have identified the signal that triggers break relocation as SUMOylation, with mono-SUMOylation triggering relocation to Mps3 and poly-SUMOylation triggering relocation to the NPC. Altogether our data describes novel roles for the Smc5/6 complex in maintaining genomic integrity during replication stress, and regulating chromatin dynamics during DSB repair. We propose that the Smc5/6 complex fulfills its functions through both physical tethering of chromatin, and Mms21-dependent signalling in response to DNA damage.
Analyzing the contribution of individual resonance poles of the S-matrix to the two-channel scattering
Creators: name: Rakityansky, S. A.
name: Elander, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A two-channel problem is considered within a method based on first order differential equations that are equivalent to the corresponding Schrödinger equation but are more convenient for dealing with resonant phenomena. Using these equations, it is possible to directly calculate the Jost matrix for practically any complex value of the energy. The spectral points (bound and resonant states) can therefore be located in a rigorous way, namely, as zeros of the Jost matrix determinant. When calculating the Jost matrix, the differential equations are solved and thus, at the same time, the wave function is obtained with the correct asymptotic behavior that is embedded in the solution analytically. The method offers very accurate way of calculating not only total widths of resonances but their partial widths as well. For each pole of the S-matrix, its residue can be calculated rather accurately, which makes it possible to obtain the Mittag-Leffler type expansion of the S-matrix as a sum of the singular terms (representing the resonances) and the background term (contour integral). As an example, the two-channel model by Noro and Taylor is considered. It is demonstrated how the contributions of individual resonance poles to the scattering cross section can be analyzed using the Mittag-Leffler expansion and the Argand plot technique. This example shows that even poles situated far away from the physical real axis may give significant contributions to the cross section.
description: 51 pages, 22 figures