cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hardware, software, and applications of super-resolution microscopy
Creators: name: Fantham, Marcus James
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Super-resolution microscopy
online visualisation
structured illumination microscopy
SIM
endoplasmic reticulum
ER
metal organic frameworks
MOF

description: Modern microscopy techniques can image beyond the diffraction limit, in three spatial dimensions, and capture sub-cellular resolution videos, providing new biological insight and assisting in drug development. However, such advanced instruments typically require expert engineers and physicists to operate them, limiting their throughput and practicality for answering biological questions. Moreover, analysis of the raw data is complicated and there are significant barriers to publishing and sharing the data with others. This thesis addresses these problems, presenting two tools designed to reduce the level of expertise required to acquire and publish modern microscopy data. The development of a structured illumination microscope (SIM) is described, with a particular emphasis on control and reconstruction software designed to make SIM accessible to biologists who are new to super-resolution microscopy. The microscope's ease-of-use has led to a wide variety of biological investigations, which are presented as case studies to assist readers of this thesis in designing their own SIM experiments. The current practice for publishing 3D data is to show 2D intensity projections or fly-through videos, which present the data only from the author's perspective and do not give readers the opportunity to explore the results themselves. To solve this problem, Chapter 3 introduces my new volumetric rendering program, FPBioimage, which runs in a web browser. By creating a tool that is intuitive and easy to use, FPBioimage enables researchers around the world to immediately view their colleagues' experimental results, even when separated by thousands of miles. Two biological studies are discussed in detail to highlight the ability of these tools to answer the latest questions in cell biology. SIM's combination of high speed and high resolution video capture reveals a pinching phenomenon in the endoplasmic reticulum which was previously unknown, responsible for active flow of luminal proteins. FPBioimage is used to show metal organic frameworks successfully delivering sensitive drugs to cells, establishing a new method of cancer treatment. All software presented in this thesis is freely available, and has been carefully written to be reusable by other researchers. This is evidenced by OMERO, an online microscopy data repository, adopting FPBioimage as their default volumetric renderer. The open-source license under which the software is distributed means that developers can continue to build on the programs, extending the capabilities as new technology becomes available.
description: Integrated Photonic and Electronic Systems Centre for Doctoral Training (IPES CDT)
Caryophyllia barbadensis Cairns 1979
Creators: name: Reyes, Javier
name: Santodomingo, Nadiezhda
name: Cairns, Stephen
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Cnidaria
Anthozoa
Scleractinia
Caryophylliidae
Caryophyllia
Caryophyllia barbadensis

description: Caryophyllia barbadensis Cairns, 1979
Fig. 2D–E
 Caryophyllia barbadensis Cairns, 1979: 60–61, pl. 8, figs. 7–9, pl. 9, fig. 1, Map 11 (description and illustrations).— Zibrowius, 1988: 135 (listed).— Cairns et al., 1994: 8.— Cairns, 2000: 68–69.— Reyes et al., 2005: 324 (listed).— Kitahara, 2007: 500, fig. 2J.— Santodomingo et al., 2007: 286 (listed).
 Remarks: Our specimens of C. barbadensis have no significant differences with those described by Cairns (1979). Colombian specimens were collected settled on fossil reef coral limestone.
 Distribution: Barbados, Louisiana, and off southern Brazil, from 129 to 249 m depth (Cairns 2000). In Colombia, C. barbadensis was collected off the San Bernardo Islands, from 123 to 155 m depth. These records extend the distribution of C. barbadensis to the southern Caribbean coast.
 Material: INV CNI669, 1 specimen, E155; INV CNI2935, 6 specimens, C2.
description: Published as part of Reyes, Javier, Santodomingo, Nadiezhda & Cairns, Stephen, 2009, Caryophylliidae (Scleractinia) from the Colombian Caribbean, pp. 1-39 in Zootaxa 2262 (1) on page 6, DOI: 10.11646/zootaxa.2262.1.1, http://zenodo.org/record/5306371
Payout Analysis of Livestock Risk Protection Insurance for Feeder Cattle
Creators: name: Burdine, Kenneth H.
name: Halich, Greg
name: Burdine, Kenneth H.
name: Halich, Greg
Publisher: name: Unknown
Year: 2014
Subjects: Financial Economics
Livestock Production/Industries

description: Monte-Carlo simulation was used to examine net payouts, defined as indemnities received minus premiums paid, to producers purchasing Livestock Risk Protection (LRP) Insurance for Feeder Cattle. Actual policies were utilized that included various purchase dates, coverage levels, and premiums from fall 2007 to spring 2013. Net payouts were estimated for time periods typical of both summer grazing and winter backgrounding at various expected price risk levels. Results suggest that expected net payouts generally became positive when producers perceived a 10 percent chance of a $15 per cwt price decrease. Results also suggested expected net payouts were higher for insurance purchased in the fall than in the spring.
Brachistochrone on a Velodrome
Creators: name: Benham, GP
name: Cohen, C
name: Brunet, E
name: Clanet, C
Publisher: name: arXiv
Year: 2019
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The Brachistochrone problem, which describes the curve that carries a particle under gravity in a vertical plane from one height to another in the shortest time, is one of the most famous studies in classical physics. There is a similar problem in track cycling, where a cyclist aims to find the trajectory on the curved sloping surface of a velodrome that results in the minimum lap time. In this paper we extend the classical Brachistochrone problem to find the optimum cycling trajectory in a velodrome, treating the cyclist as an active particle. Starting with two canonical cases of cycling on a sloping plane and a cone, where analytical solutions are found, we then solve the problem numerically on the reconstructed surface of the velodrome in Montigny le Bretonneux, France. Finally, we discuss the parameters of the problem and the effects of fatigue.
Measuring the Costs of Production and Pricing on Diversified Farms: Juggling Decisions Amidst Uncertainties
Creators: name: Becot, Florence A.
name: Conner, David S.
name: Kolodinsky, Jane M.
name: Mendez, V. Ernesto
name: Becot, Florence A.
name: Conner, David S.
name: Kolodinsky, Jane M.
name: Mendez, V. Ernesto
Publisher: name: Unknown
Year: 2014
Subjects: Farm Management
Financial Economics
Production Economics

description: Farmers must earn revenues that both cover costs and provide adequate returns. The goal of this research was to understand how diversified farmers measure their cost of production and determine prices. We conducted in-depth interviews of diversified Vermont farmers and used the constant comparative method to analyze the data. Farmers and their operations, the process of measuring the cost of production and pricing, farmers’ decision-making process, and tradeoffs in the face of uncertainty are described and analyzed. This study’s findings contribute to current discussions of farmer decision making by developing practical implications for important, but difficult tasks.
High accuracy computational methods for the semiclassical Schrödinger equation
Creators: name: Singh, Pranav
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: Semiclassical Schrödinger equations
time-dependent potentials
exponential splittings
Zassenhaus splitting
Magnus expansions
Lanczos iterations
Magnus--Zassenhaus schemes
commutator free
high-order methods
asymptotic analysis
Lie algebras
Jordan polynomials
symmetrised differential operators
spectral collocation

description: The computation of Schrödinger equations in the semiclassical regime presents several enduring challenges due to the presence of the small semiclassical parameter. Standard approaches for solving these equations commence with spatial discretisation followed by exponentiation of the discretised Hamiltonian via exponential splittings. In this thesis we follow an alternative strategy${-}$we develop a new technique, called the symmetric Zassenhaus splitting procedure, which involves directly splitting the exponential of the undiscretised Hamiltonian. This technique allows us to design methods that are highly efficient in the semiclassical regime. Our analysis takes place in the Lie algebra generated by multiplicative operators and polynomials of the differential operator. This Lie algebra is completely characterised by Jordan polynomials in the differential operator, which constitute naturally symmetrised differential operators. Combined with the $\mathbb{Z}_2$-graded structure of this Lie algebra, the symmetry results in skew-Hermiticity of the exponents for Zassenhaus-style splittings, resulting in unitary evolution and numerical stability. The properties of commutator simplification and height reduction in these Lie algebras result in a highly effective form of $\textit{asymptotic splitting:} $exponential splittings where consecutive terms are scaled by increasing powers of the small semiclassical parameter. This leads to high accuracy methods whose costs grow quadratically with higher orders of accuracy. Time-dependent potentials are tackled by developing commutator-free Magnus expansions in our Lie algebra, which are subsequently split using the Zassenhaus algorithm. We present two approaches for developing arbitrarily high-order Magnus--Zassenhaus schemes${-}$one where the integrals are discretised using Gauss--Legendre quadrature at the outset and another where integrals are preserved throughout. These schemes feature high accuracy, allow large time steps, and the quadratic growth of their costs is found to be superior to traditional approaches such as Magnus--Lanczos methods and Yoshida splittings based on traditional Magnus expansions that feature nested commutators of matrices. An analysis of these operatorial splittings and expansions is carried out by characterising the highly oscillatory behaviour of the solution.
description: The author acknowledges the generous financial support of King's College, Cambridge, in the form of a King’s College Studentship which supported this doctoral research at Cambridge.
MOESM3 of Comparison of postoperative complications between segmentectomy and lobectomy by video-assisted thoracic surgery: a multicenter study
Creators: name: Bédat, Benoît
name: Abdelnour-Berchtold, Etienne
name: Perneger, Thomas
name: Marc-Joseph Licker
name: Stefani, Alexandra
name: Krull, Matthieu
name: Perentes, Jean
name: Krueger, Thorsten
name: Triponez, Frédéric
name: Karenovics, Wolfram
name: Gonzalez, Michel
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3. Associations of patient characteristics with complications. VATS: Video-assisted thoracic surgery, ASA: American Society of Anesthesiologists Score, BMI: Body mass index, PY: pack-years, COPD: Chronic obstructive pulmonary disease, FEV1: Forced expiratory volume in one second, DLCO: Diffusing capacity of the lungs for carbon monoxide, SLND: systematic lymph node dissection.
title: Innovation, Bestsellers and Digitization – Where to Find the Needle in the Haystack?
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Götz, Georg
name: Herold, Daniel
name: Klotz, Phil-Andrian
name: Schäfer, Jan Thomas
Publisher: name: Philipps-Universität Marburg
Year: 2020
Subjects: Economics
Wirtschaft

description: We empirically analyze the role of e-Commerce and brick-and-mortar retailers in discovering new bestsellers in the book market, using the German market as an example. Using an AR(1)-Process, we find that when a title becomes a bestseller sales increase in e-Commerce and decrease in brick- and-mortar stores relative to a title that is not on the bestseller-list. This finding implies that consumers in the online channel respond by increasing sales upon receiving a quality signal (i.e., a title becoming a bestseller). Consumers in the online channel seem to already know that title so that, compared to a title that is not on the bestseller-lists, sales are decreasing. This might imply that consumers in the online channel are more likely to read future bestsellers..
How Long is Long Enough: Using Abbreviated Criminal Histories for Pretrial Assessment Instruments?
Creators: name: DeMichele, Matthew
name: Inkpen, Christopher
name: Silver, Ian
name: Walker, Jason
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: The debate over pretrial assessment instruments focuses largely on the potential for instruments to exacerbate racial disparities. This study examines the effects of using different recall periods for the criminal history items on the New Criminal Arrest (NCA) scale from the Public Safety Assessment. Using jail admission data from a large jurisdiction in the southeast of the US, we varied the recall period from 1 to 10 years for the criminal history items on the NCA scale and examined scoring differences and the predictive validity of the tool by race. The results showed that shorter criminal history recall periods could result in reductions in the proportion of individuals scored as high risk and no loss in validity. The current study demonstrates that shorter recall periods for criminal history items on pretrial instruments could potentially provide a practical strategy to mitigate disparities across groups, while maintaining predictive validity of the assessment.
The political debate over war strategy, 1689-1712
Creators: name: Denman, Terence John
Publisher: name: Apollo - University of Cambridge Repository
Year: 1985

description: The dissertation covers 1689-1712 in English political history. It deals with the debate between the Whig and Tory parties, and their internal conflicts, over the strategy necessary to defeat France in the two wars of this period: the Nine Years' and Spanish Succession Wars. It describes the widespread hopes for a quick victory, centred on the 'descent', in the early years of William's reign; and how this optimism was exploited to secure support for the Continental war. It traces the development of an alternative 'Country' strategy in response to the failures to mount an invasion of France and the build up of English forces in Flanders. The consolidation of Whig support behind the Continental war in 1693-95; and the failure of the Country attempt to draw away mercantile support from the European war by exploiting the anger over privateering losses are analysed. The explosion of Country/Tory bitterness in 1697-98 which ied to the precipitate disbanding of the army is discussed with reference to the strategic hopes and disappointments of :the previous war. The approach of the Spanish Succession War in 1698-1702 is analysed against the background of the expectations of both Whigs and Tories that England would now fight as naval auxiliaries; and attenti-on is drawn to the wide-spread interest in Caribbean warfare. The internal disputes within the Tory ministry in 1702-04 over war strategy are analysed, and the strategic ideas of the main political figures - Nottingham, Godolphin, Marlborough and Harley - are examined. The importance of the Spanish theatre to public and political opinion and the revival of interest in Caribbean warfare from 1706 on are both documented. Harley's changing attitude to the war in the years 1704-08 is discussed. The rise to dominance , of the Junto war strategy 1708-10 is cpnsidered, and the Tory \ response. The war strategy of .the Tory ministry of 1710 is examined, with particular reference to the hold of the Spanish war on Tory loyalties, and Harley's West Indian and St John's Canadian schemes. The fierce pamphlet debate between Whig and Tory in 1710-12 over the conduct of the Succession War is analysed.
description: Digitisation of this thesis was sponsored by Arcadia Fund, a charitable fund of Lisbet Rausing and Peter Baldwin.
OFF-FARM EMPLOYMENT AND FARM ADJUSTMENTS: IMPLICATIONS OF PART-TIME FARMING FOR RURAL DEVELOPMENT
Creators: name: Kada, Ryohei
name: Kada, Ryohei
Publisher: name: Unknown
Year: 1981
Subjects: Community/Rural/Urban Development
Farm Management

description: Statistical evidence shows that farm families in most of the developed countries are increasingly dependent on income from off-farm sources. In the United States, for example, over 50 percent of all farm operators worked off the farm in 1969, which is almost twice the percentage of forty years ago. The percentage of income from off-farm sources, as a result, increased from 29 percent in 1935 to 54 percent in 1976 (U.S. Department of Agriculture). The taking up of off-farm employment by one or more members of a farm family is probably one way to counteract the cost-price squeeze and to adjust to the rapidly changing economy and technology of a modern society. Little attention has been paid, however, to the nature and mechanism of adjustments through off-farm employment, especially at the micro level. Furthermore, very few economists have attempted to make intercountry comparisons of part-time farming from this viewpoint, due mainly to the lack of comparable data in most developed countries (Gasson). Taking the farm family as the unit of account, the main objective of this paper is to present and discuss the direction of on-farm and off-farm adjustments, labour allocation decisions, and the life cycle pattern of employment and income of the part-time farm family.
title: Optimal Taxation under Regional Inequality
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Kessing, Sebastian G.
name: Lipatov, Vilen
name: Zoubek, J. Malte
Publisher: name: Philipps-Universität Marburg
Year: 2020
Subjects: Economics
Wirtschaft
regional in- equality
migration
multidimensional screening
delayed optimal control
Optimal taxation
place-based redistribution

description: We study how regional productivity di¤erences and labor mobility shape
optimal Mirrleesian tax-transfer schemes. When tax schedules are not al-
lowed to differ across regions, productivity-enhancing inter-regional migra-
tion exerts a downward pressure on optimal marginal tax rates. When
regionally di¤erentiated taxation is allowed, marginal tax rates in high-
(low-)productivity regions should be corrected downwards (upwards) rela-
tive to the benchmark without migration. Simulations of the productivity
di¤erences between metropolitan and other areas of the US indicate that
migration affects the optimal tax-transfer schedule more strongly in the
regionally differentiated rather than in the undi¤erentiated case.
Angular momentum and parity projected multidimensionally constrained relativistic Hartree-Bogoliubov model
Creators: name: Wang, Kun
name: Lu, Bing-Nan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nuclear deformations are of fundamental importance in nuclear physics. Recently we developed a multi-dimensionally constrained relativistic Hartree-Bogoliubov (MDCRHB) model, in which all multipole deformations respecting the $V_4$ symmetry can be considered self-consistently. In this work we extend this model by incorporating the angular momentum projection (AMP) and parity projection (PP) to restore the rotational and parity symmetries broken in the mean-field level. This projected-MDCRHB (p-MDCRHB) model enables us to connect certain nuclear spectra to exotic intrinsic shapes such as triangle or tetrahedron. We present the details of the method and an exemplary calculation for $^{12}$C. We develop a triangular moment constraint to generate the triangular configurations consisting of three $α$ clusters arranged as an equilateral triangle. The resulting $^{12}$C spectra are consistent with that from a triangular rigid rotor for large separations between the $α$ clusters. We also calculate the $B(E2)$ and $B(E3)$ values for low-lying states and find good agreement with the experiments.
description: 37 pages, 6 figures
title: Political Budget Cycles Revisited: Testing the Signalling Process
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: García, Israel
name: Hayo, Bernd
Publisher: name: Philipps-Universität Marburg
Year: 2020
Subjects: Economics
Wirtschaft
Signalling mechanism
Local government
Representative population survey
Political budget cycles
Germany
Fiscal policy

description: A widespread view in the ‘political budget cycles’ literature is that incumbent politicians seek to influence voters’ perceptions of their competence and/or preferences by using the composition of the fiscal budget as a signalling tool. However, little is known about whether voters actually receive and perceive the signal in that way. To empirically assess the relevance of the signalling channel at the municipal level, we conducted a survey among 2,000 representative German citizens in 2018. Only a small fraction of voters feel well-informed about the fiscal budget signal and use the information it contains to decide whether to vote for the incumbent politician. Persons paying more attention to the signal sent by local politicians live in smaller municipalities, are more satisfied with their economic situation, are more educated, and do not feel that they are being electorally manipulated. Our analysis raises doubt about the relevance of budget composition as a signalling mechanism for voters at the local level.
Discontinuous Galerkin Model Order Reduction of Geometrically Parametrized Stokes Equation
Creators: name: Shah, Nirav Vasant
name: Hess, Martin
name: Rozza, Gianluigi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The present work focuses on the geometric parametrization and the reduced order modeling of the Stokes equation. We discuss the concept of a parametrized geometry and its application within a reduced order modeling technique. The full order model is based on the discontinuous Galerkin method with an interior penalty formulation. We introduce the broken Sobolev spaces as well as the weak formulation required for an affine parameter dependency. The operators are transformed from a fixed domain to a parameter dependent domain using the affine parameter dependency. The proper orthogonal decomposition is used to obtain the basis of functions of the reduced order model. By using the Galerkin projection the linear system is projected onto the reduced space. During this process, the offline-online decomposition is used to separate parameter dependent operations from parameter independent operations. Finally this technique is applied to an obstacle test problem.The numerical outcomes presented include experimental error analysis, eigenvalue decay and measurement of online simulation time. Keywords: Discontinuous Galerkin method, Stokes flow, Geometric parametrization, Proper orthogonal decomposition
description: 9 pages, 11 figures, 9 references, Submitted to European Numerical Mathematics and Advanced Applications Conference 2019
title: Das Bestellerprinzip auf Wohnungs- und Immobilienmärkten – ist gut gemeint auch gut?
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Michaelis, Jochen
name: Schwanebeck, Benjamin
Publisher: name: Philipps-Universität Marburg
Year: 2020
Subjects: Economics
Wirtschaft

description: Mit der Implementierung des Bestellerprinzips - wer den Makler beauftragt, muss ihn auch bezahlen - hat der Gesetzgeber einen Wechsel der Zahllast für die Courtage vom Mieter zum Vermieter vorgenommen. Mit Hilfe eines sequentiellen Verhandlungsspiels wird hier diskutiert, inwieweit der Wechsel der Zahllast mit einer Veränderung der ökonomischen Traglast einhergeht. Es wird gezeigt, dass für plausible Parameterkonstellationen (i) die Makler verlieren in Form einer sinkenden Courtage, (ii) die Mieter gewinnen trotz Überwälzung der Courtage auf die Miete, und (iii) auch die Vermieter gewinnen trotz Übernahme der Zahllast der Courtage.
UniBE HPC - UBELIX Resources for (Data) Scientists
Creators: name: Schönherr, Mandes
Publisher: name: Zenodo
Year: 2021

description: Poster: UniBE HPC - UBELIX Resources for (Data) Scientists. University of Bern High Performance Computing (HPC) resources provide computing resources for computational and/or memory demanding tasks, these include CPU and GPU nodes with high bandwidth network and storage.
Measurement and mechanisms of complement-induced neutrophil dysfunction
Creators: name: Wood, Alexander James Telfer
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Complement
immunosuppression
critical illness
sepsis
neutrophil
innate immunity
phosphoproteomics
proteomics
c5a
anaphylatoxin

description: Critical illness is an aetiologically and clinically heterogeneous syndrome that is characterised by organ failure and immune dysfunction. Mortality in critically ill patients is driven by inflammation-associated organ damage and a profound vulnerability to nosocomial infection. Both factors are influenced by the complement protein C5a, released by unbridled activation of the complement system during critical illness. C5a suppresses antimicrobial functions of key immune cells, in particular the neutrophil, and this suppression has been shown to be associated with poorer outcomes amongst critically ill adults. The intracellular signalling pathways which mediate C5a-induced neutrophil dysfunction are incompletely understood, and scalable tools with which to assess immune cell dysfunction in patients are lacking. This thesis aimed to develop tools with which to assess neutrophil function and delineate intracellular signalling pathways driving C5a-induced impairment. Neutrophils were isolated from healthy volunteer blood and functions (priming, phagocytosis and reactive oxygen species production) were assessed using light microscopy, confocal microscopy and flow cytometry. A new assay was developed using an Attune Nxt™ acoustic focusing cytometer (Life Technologies) which allowed the rapid assessment of multiple neutrophil functions in small samples of unlysed, minimally-manipulated human whole blood. Complete proteomes and phosphoproteomes of phagocytosing neutrophils were obtained from four healthy donors pre-treated with C5a or vehicle control. Several key insights were gained from this work and are summarised here. Firstly, C5a was found to induce a prolonged (greater than seven hours) impairment of neutrophil phagocytosis. This defect was found to be preventable by previous or concurrent phagocytosis, indicating common signalling mechanisms. Secondly, a novel assay was developed which allows the rapid assessment of multiple neutrophil functions in less than 2 mL of whole blood, and this assay can feasibly be applied in clinical settings. Thirdly, cell-surface expression of the C5a receptor was found to be markedly decreased during phagocytosis, and this decrease was not mediated by protease activity. Finally, unbiased proteomics quantified 4859 proteins and 2712 phosphoproteins respectively. This quantification is the deepest profile of the human neutrophil proteome published to date, and has revealed novel insights into the mechanisms of C5a-induced neutrophil dysfunction and phagocytosis.
description: Gates Cambridge Trust (Gates Cambridge Scholarship)
The chemical evolution of the dwarf Spheroidal galaxy Sextans
Creators: name: Theler, R.
name: Jablonka, P.
name: Lucchesi, R.
name: Lardo, C.
name: North, P.
name: Irwin, M.
name: Battaglia, G.
name: Hill, V.
name: Tolstoy, E.
name: Venn, K.
name: Helmi, A.
name: Kaufer, A.
name: Primas, F.
name: Shetrone, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the analysis of the FLAMES dataset targeting the central 25 arcmin region of the Sextans dSph. This dataset is the third major part of the high resolution spectroscopic section of the ESO large program 171.B-0588(A) obtained by the Dwarf galaxy Abundances and Radial-velocities Team (DART). Our sample is composed of red giant branch stars down to the level of the horizontal branch in Sextans. It allows to address questions related to both stellar nucleosynthesis and galaxy evolution. We provide metallicities for 81 stars, which cover the wide [Fe/H]=$-$3.2 to $-$1.5 dex range. The abundances of 10 other elements are derived: Mg, Ca, Ti, Sc, Cr, Mn, Co, Ni, Ba, and Eu. Despite its small mass, Sextans is a chemically evolved system, with evidence for the contribution of core-collapse and Type Ia supernovae as well as low metallicity AGBs. This new FLAMES sample offers a sufficiently large number of stars with chemical abundances derived at high accuracy to firmly establish the existence of a plateau in [$α$/Fe] at $\sim 0.4$ dex, followed by a decrease above [Fe/H]$\sim-2$ dex. This is in stark similarity with the Fornax and Sculptor dSphs despite their very different masses and star formation histories. This suggests that these three galaxies had very similar star formation efficiencies in their early formation phases, probably driven by the early accretion of smaller galactic fragments, until the UV-background heating impacted them in different ways. The parallel between the Sculptor and Sextans dSph is also striking when considering Ba and Eu. Finally, as to the iron-peak elements, the decline of [Co/Fe] and [Ni/Fe] above [Fe/H]$\sim -2$ implies that the production yields of Ni and Co in SNeIa is lower than that of Fe. The decrease in [Ni/Fe] favours models of SNeIa based on the explosion of double degenerate sub-Chandrasekhar mass white dwarfs.
description: Accepted for publication in A&A. All tables included
Regression Estimates of Different Land Type Prices and Time Adjustments
Creators: name: Wilson, Bill
name: Schurle, Bryan
name: Taylor, Mykel
name: Featherstone, Allen
name: Ibendahl, Gregg
name: Wilson, Bill
name: Schurle, Bryan
name: Taylor, Mykel
name: Featherstone, Allen
name: Ibendahl, Gregg
Publisher: name: Unknown
Year: 2014
Subjects: Financial Economics
Land Economics/Use

description: Appraisers use puritan sales to estimate the ratio of prices for different types of land. However, puritan sales may be hard to find in areas where parcels contain upland, bottomland, meadow, pasture, irrigation, recreational land, and CRP. This paper uses regression to identify the value of different land types from sales that have a mixture of types. A second issue is adjusting values for time. Regression can be used to calculate a time adjustment. However, there are major modeling decisions that need to be made to make sure that the model fits the price adjustments occurring in the market.
Vortex liquids and vortex quantum Hall states in trapped rotating Bose gases
Creators: name: Fischer, Uwe R.
name: Fedichev, Petr O.
name: Recati, Alessio
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We discuss the feasibility of quantum Hall states of vortices in trapped low-density two-dimensional Bose gases with large particle interactions. For interaction strengths larger than a critical dimensionless 2D coupling constant $g_c \approx 0.6$, upon increasing the rotation frequency, the system is shown to spatially separate into vortex lattice and melted vortex lattice (vortex liquid) phases. At a first critical frequency, the lattice melts completely, and strongly correlated vortex and particle quantum Hall liquids coexist in inner respectively outer regions of the gas cloud. Finally, at a second critical frequency, the vortex liquid disappears and the strongly correlated particle quantum Hall state fills the whole sample.
description: 11 pages, 3 figures; to appear in J. Phys. B
Enhancement of Healthcare Data Performance Metrics using Neural Network Machine Learning Algorithms
Creators: name: An, Qi
name: Szewczyk, Patryk
name: Johnstone, Michael N
name: Kang, James Jin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Patients are often encouraged to make use of wearable devices for remote collection and monitoring of health data. This adoption of wearables results in a significant increase in the volume of data collected and transmitted. The battery life of the devices is then quickly diminished due to the high processing requirements of the devices. Given the importance attached to medical data, it is imperative that all transmitted data adhere to strict integrity and availability requirements. Reducing the volume of healthcare data for network transmission may improve sensor battery life without compromising accuracy. There is a trade-off between efficiency and accuracy which can be controlled by adjusting the sampling and transmission rates. This paper demonstrates that machine learning can be used to analyse complex health data metrics such as the accuracy and efficiency of data transmission to overcome the trade-off problem. The study uses time series nonlinear autoregressive neural network algorithms to enhance both data metrics by taking fewer samples to transmit. The algorithms were tested with a standard heart rate dataset to compare their accuracy and efficiency. The result showed that the Levenbery-Marquardt algorithm was the best performer with an efficiency of 3.33 and accuracy of 79.17%, which is similar to other algorithms accuracy but demonstrates improved efficiency. This proves that machine learning can improve without sacrificing a metric over the other compared to the existing methods with high efficiency.
description: 8 pages, 18 fingures
MOESM2 of How does psychosocial stress affect the relationship between socioeconomic disadvantage and overweight and obesity? Examining Hemmingsson’s model with data from a Danish longitudinal study
Creators: name: Poulsen, Per
name: Biering, Karin
name: Winding, Trine
name: Nohr, Ellen
name: Petersen, Liselotte
name: Ulijaszek, Stanley
name: Andersen, Johan
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: Computational Biology

description: Additional file 2: Table S2. Unadjusted estimates for the association between the individual proxies from the 5 domains (Hemmingsson:2014) and overweight and obesity at age 15, 18, 21 and 28 years (boys).
Four Dimensional CFT Models with Rational Correlation Functions
Creators: name: Nikolov, Nikolay M.
name: Stanev, Yassen S.
name: Todorov, Ivan T.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently established rationality of correlation functions in a globally conformal invariant quantum field theory satisfying Wightman axioms is used to construct a family of soluble models in 4-dimensional Minkowski space-time. We consider in detail a model of a neutral scalar field $ϕ$ of dimension 2. It depends on a positive real parameter c, an analogue of the Virasoro central charge, and admits for all (finite) c an infinite number of conserved symmetric tensor currents. The operator product algebra of $ϕ$ is shown to coincide with a simpler one, generated by a bilocal scalar field $V(x_1,x_2)$ of dimension (1,1). The modes of V together with the unit operator span an infinite dimensional Lie algebra $L_V$ whose vacuum (i.e. zero energy lowest weight) representations only depend on the central charge c. Wightman positivity (i.e. unitarity of the representations of $L_V$) is proven to be equivalent to $c \in N$.
description: 28 pages, LATEX, amsfonts, latexsym. Proposition 2.3, and Conjecture in Sec. 6 are revised. Minor errors are corrected
Crop Machinery Benchmarks
Creators: name: Langemeier, Michael R.
name: Ibendahl, Gregg
name: Langemeier, Michael R.
name: Ibendahl, Gregg
Publisher: name: Unknown
Year: 2014
Subjects: Crop Production/Industries
Farm Management
Industrial Organization

description: This paper examined crop machinery investment and cost benchmarks for a sample of Kansas farms. Crop machinery benchmarks varied widely among the farms. On average, crop machinery investment and cost were $227 and $82, respectively. Crop machinery investment and cost were significantly correlated with the interest and depreciation expense ratios, the asset turnover ratio, percent acres owned, and net machinery purchases. Crop machinery cost was also significantly correlated with crop intensity (harvested acres/crop acres). As with most machinery issues, a balance between controlling crop machinery investment and cost, and timeliness needs to be reached. This paper points out the importance of controlling investment and cost rather than investment and the cost.
Delta-doped \b{eta}-Ga2O3 thin films and \b{eta}-(Al0.26Ga0.74)2O3/\b{eta}-Ga2O3 heterostructures grown by metalorganic vapor-phase epitaxy
Creators: name: Ranga, Praneeth
name: Bhattacharyya, Arkka
name: Rishinaramangalam, Ashwin
name: Ooi, Yu Kee
name: Scarpulla, Michael A.
name: Feezell, Daniel
name: Krishnamoorthy, Sriram
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We report on silicon delta doping of metalorganic vapor-phase epitaxy-grown \b{eta}-Ga2O3 thin films using silane precursor. Delta-doped \b{eta}-Ga2O3 epitaxial films are characterized using capacitance-voltage profiling and secondary-ion mass spectroscopy. Electron sheet charge density in the range of 2.9e12 cm-2 to 8e12 cm-2 with a half width at half maximum ranging from 6.2 nm to 3.5 nm is measured. We also demonstrate a high density (6.4e12 cm-2) degenerate two-dimensional electron gas using a delta-doped \b{eta}-(Al0.26Ga0.74)2O3/\b{eta}-Ga2O3 heterostructure.The total charge could also include a contribution from a parallel channel in the \b{eta}-(Al0.26Ga0.74)2O3 alloy barrier.
MOESM2 of Comparison of postoperative complications between segmentectomy and lobectomy by video-assisted thoracic surgery: a multicenter study
Creators: name: Bédat, Benoît
name: Abdelnour-Berchtold, Etienne
name: Perneger, Thomas
name: Marc-Joseph Licker
name: Stefani, Alexandra
name: Krull, Matthieu
name: Perentes, Jean
name: Krueger, Thorsten
name: Triponez, Frédéric
name: Karenovics, Wolfram
name: Gonzalez, Michel
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Marine Biology
subject: Science Policy

description: Additional file 2. Comparison of propensity score according to type of intervention by VATS VATS: Video-assisted thoracic surgery, SD: Standard deviation, AUC: Area under the curve, CI: Confidence interval.
title: COVID-19 Outbreak and Air Pollution in Iran: A Panel VAR Analysis
title: MAGKS - Joint Discussion Paper Series in Economics
Creators: name: Asna-ashary, Mozhgan
name: Farzanegan, Mohammad Reza
name: Feizi, Mehdi
name: Sadati, Saeed Malek
Publisher: name: Philipps-Universität Marburg
Year: 2020
Subjects: panel vector autoregressive model
Economics
Wirtschaft
Iran
air pollution.
COVID-19

description: The new Coronavirus pandemic has extensive negative socioeconomic impacts. However, its effects on climate change and in particular air pollution, at least at the beginning of the outbreak, is not clear. Fear of getting the Coronavirus in crowded public spaces increased the use of personal cars, while prevention policies that seek to decrease population movement reduced their usage. This paper investigates the relationship between the outbreak of COVID-19, measured by the number of infected cases, and air pollution, measured by PM2.5, in 31 Iranian provinces over the 19 February 2020 to 11 March 2020 period. We employ a panel vector autoregressive (PVAR) approach along with impulse response functions (IRFs), variance decomposition, and Granger causality tests. The analysis shows negative responses of the PM pollution to positive shock in COVID-19 cases in Iran.
The galactic foreground angular spectra
Creators: name: Chepurnov, A. V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Galactic synchrotron and free-free foregrounds angular spectra are analytically estimated with account for interstellar turbulence and radiating process physics. Unknown parameters of the spectra are obtained by fitting to observational data.
Mechanisms of ventricular arrhythmogenesis in the age dependent Pgc-1β -/- model of mitochondrial dysfunction.
Creators: name: Ahmad, Shiraz
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: PGC
cardiac
arrhythmia

description: Sudden cardiac death is a leading cause of mortality worldwide. Ventricular arrhythmias, both ventricular tachycardia and ventricular fibrillation, are the primary arrhythmias that lead to sudden cardiac death. A large proportion of ventricular arrhythmias are ischaemic in origin. However, increasing clinical and experimental evidence links metabolic disease, mitochondrial dysfunction and ageing as independent risk factors for arrhythmogenesis beyond the risk they confer to coronary artery disease. To date, researchers have focused upon investigation of monogenic ion channel disorders as well circumscribed diseases to investigate the principles of arrhythmogenesis. This has given insight into the basic theories of arrhythmogenesis as well as the tools needed to dissect them. In this study, we use Pgc-1β-/- mice as a murine model of mitochondrial dysfunction, to further investigate the link between mitochondrial and energetic insufficiency and arrhythmias. The study uses electrocardiographic data to characterise the phenotype at the whole animal level, revealing significant age related abnormalities in ventricular activation and abnormal nodal tissue phenotypes. Single cell action potential characteristics in intact Langendorff perfused whole hearts were then used both in programmed electrical stimulation studies and at incrementally paced steady states to investigate the electrophysiological characteristics that give rise to arrhythmia. These experiments revealed a significant deficit in maximal rate of depolarisation and consequent effects on conduction wavelengths, accompanied by instabilities in activation characteristics as evidenced by the presence of electrical alternans. Finally, patch-clamp studies are performed to confirm the hypotheses of the earlier experiments and their effect on cellular currents in a physiological environment which show a physiological deficit in sodium current density. At all stages care was taken to perform experiments in the least disruptive manner, maintaining as much physiological relevance as possible. The series of experiments reveal that not only is mitochondrial dysfunction related to arrhythmias in an age dependant manner, but that it leads to altered sodium current density with a plausible role of Ca2+ as a central mediator of this, allowing future studies to build on this.
description: Funded by the MRC clinical training research fellowship (CRTF)
Thermal Cooling Enhancements in a Heated Channel Using Flow-Induced Motion
Creators: name: Verma, Mayank
name: De, Ashoke
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The paper presents the comparative study of the vortex-induced cooling of a heated channel for the four different cross-sections of the rigid cylinder, i.e., circular, square, semi-circular, and triangular, with or without the rigid/flexible splitter plate at the Reynolds number (based on the hydraulic diameter) of 200. The study presents a comprehensive analysis of the flow and thermal performance for all the cases. For flexible plate cases, a partitioned approach is invoked to solve the coupled fluid-structure-convection problem. The simulations show the reduction in the thermal boundary layer thickness at the locations of the vortices resulting in the improved Nusselt number. Further, the thin plate's flow-induced motion significantly increases the vorticity field inside the channel, resulting in improved mixing and cooling. It is observed that the plate-motion amplitude is maximum when the plate is attached to the cylinder with the triangular cross-section. The power requirement analysis shows that the flexible plate reduces the power required to pump the channel's cold fluid. Thus, based on the observations of the present study, the authors recommend using the flexible plate attached to the cylinder for improved convective cooling.
A Dynamic Access Control Model Using Authorising Workfow and Task Role-based Access Control
Creators: name: Uddin, Mumina
Publisher: name: University of East London
Year: 2020

description: Access control is fundamental and prerequisite to govern and safeguard information assets within an organisation. Organisations generally use Web enabled remote access coupled with applications access distributed across various networks. These networks face various challenges including increase operational burden and monitoring issues due to the dynamic and complex nature of security policies for access control. The increasingly dynamic nature of collaborations means that in one context a user should have access to sensitive information, whilst not being allowed access in other contexts. The current access control models are static and lack Dynamic Segregation of Duties (SoD), Task instance level of Segregation, and decision making in real time. This thesis addresses these limitations describes tools to support access management in borderless network environments with dynamic SoD capability and real time access control decision making and policy enforcement. This thesis makes three contributions: i) Defining an Authorising Workflow Task Role Based Access Control (AW-TRBAC) using existing task and workflow concepts. This new workflow integrates dynamic SoD, whilst considering task instance restriction to ensure overall access governance and accountability. It enhances existing access control models such as Role Based Access Control (RBAC) by dynamically granting users access rights and providing access governance. ii) Extension of the OASIS standard of XACML policy language to support dynamic access control requirements and enforce access control rules for real time decision making. This mitigates risks relating to access control, such as escalation of privilege in broken access control, and insucient logging and monitoring. iii) The AW-TRBAC model is implemented by extending the open source XACML (Balana) policy engine to demonstrate its applicability to a real industrial use case from a financial institution. The results show that AW-TRBAC is scalable, can process relatively large numbers of complex requests, and meets the requirements of real time access control decision making, governance and mitigating broken access control risk.