cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Rotational Structure and Outflow in the Infrared Dark Cloud 18223-3
Creators: name: Fallscheer, C.
name: Beuther, H.
name: Zhang, Q.
name: Keto, E.
name: Sridharan, T. K.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We examine an Infrared Dark Cloud (IRDC) at high spatial resolution as a means to study rotation, outflow, and infall at the onset of massive star formation. Submillimeter Array observations combined with IRAM 30 meter data in 12CO(2--1) reveal the outflow orientation in the IRDC 18223-3 region, and PdBI 3 mm observations confirm this orientation in other molecular species. The implication of the outflow's presence is that an accretion disk is feeding it, so using high density tracers such as C18O, N2H+, and CH3OH, we looked for indications of a velocity gradient perpendicular to the outflow direction. Surprisingly, this gradient turns out to be most apparent in CH3OH. The large size (28,000 AU) of the flattened rotating object detected indicates that this velocity gradient cannot be due solely to a disk, but rather from inward spiraling gas within which a Keplerian disk likely exists. From the outflow parameters, we derive properties of the source such as an outflow dynamical age of ~37,000 years, outflow mass of ~13 M_sun, and outflow energy of ~1.7 x 10^46 erg. While the outflow mass and energy are clearly consistent with a high-mass star forming region, the outflow dynamical age indicates a slightly more evolved evolutionary stage than previous spectral energy distribution (SED) modeling indicates. The calculated outflow properties reveal that this is truly a massive star in the making. We also present a model of the observed methanol velocity gradient. The rotational signatures can be modeled via rotationally infalling gas. These data present evidence for one of the youngest known outflow/infall/disk systems in massive star formation. A tentative evolutionary picture for massive disks is discussed.
description: 11 pages, 9 figures. Accepted for publication in A&A. Figures 2,3,6, and 9 are available at higher resolution by email or in the journal publication
Social Policy Trends: Disability Benefit Caseloads in 4 Provinces
Creators: name: Kneebone, Ronald
Publisher: name: The School of Public Policy Publications
Year: 2021

description: The incidence of disabilities is likely similar across provinces; the number of Disability Benefit caseloads per 1,000 adults is not.
description: The School of Public Policy Publications, Vol. 14 (2021)
Surface defects incorporated diamond machining of silicon
Creators: name: Khatri, Neha
name: Barkachary, Borad M
name: Muneeswaran, B
name: Al-Sayegh, Rajab
name: Luo, Xichun
name: Goel, Saurav
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: Paper
Approaches and theories of processing
: surface defect machining
silicon
finite element analysis
surface roughness

description: Abstract: This paper reports the performance enhancement benefits in diamond turning of the silicon wafer by incorporation of the surface defect machining (SDM) method. The hybrid micromachining methods usually require additional hardware to leverage the added advantage of hybrid technologies such as laser heating, cryogenic cooling, electric pulse or ultrasonic elliptical vibration. The SDM method tested in this paper does not require any such additional baggage and is easy to implement in a sequential micro-machining mode. This paper made use of Raman spectroscopy data, average surface roughness data and imaging data of the cutting chips of silicon for drawing a comparison between conventional single-point diamond turning (SPDT) and SDM while incorporating surface defects in the (i) circumferential and (ii) radial directions. Complementary 3D finite element analysis (FEA) was performed to analyse the cutting forces and the evolution of residual stress on the machined wafer. It was found that the surface defects generated in the circumferential direction with an interspacing of 1 mm revealed the lowest average surface roughness (Ra) of 3.2 nm as opposed to 8 nm Ra obtained through conventional SPDT using the same cutting parameters. The observation of the Raman spectroscopy performed on the cutting chips showed remnants of phase transformation during the micromachining process in all cases. FEA was used to extract quantifiable information about the residual stress as well as the sub-surface integrity and it was discovered that the grooves made in the circumferential direction gave the best machining performance. The information being reported here is expected to provide an avalanche of opportunities in the SPDT area for low-cost machining solution for a range of other nominal hard, brittle materials such as SiC, ZnSe and GaAs as well as hard steels.
Estimation of Operational Risk Capital Charge under Parameter Uncertainty
Creators: name: Shevchenko, Pavel V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: Many banks adopt the Loss Distribution Approach to quantify the operational risk capital charge under Basel II requirements. It is common practice to estimate the capital charge using the 0.999 quantile of the annual loss distribution, calculated using point estimators of the frequency and severity distribution parameters. The uncertainty of the parameter estimates is typically ignored. One of the unpleasant consequences for the banks accounting for parameter uncertainty is an increase in the capital requirement. This paper demonstrates how the parameter uncertainty can be taken into account using a Bayesian framework that also allows for incorporation of expert opinions and external data into the estimation procedure.
Improved analysis on the semi-leptonic decay $Λ_c\toΛ\ell^+ν$ from QCD light-cone sum rules
Creators: name: Liu, Yong-Lu
name: Huang, Ming-Qiu
name: Wang, Dao-Wei
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: With the renewed distribution amplitudes of $Λ$, we present a reanalysis on the semi-leptonic decay $Λ_c\toΛ\ell^+ν$ by use of the light-cone sum rule approach with two kinds of interpolating currents. The form factors describing the decay process are obtained and used to predict the decay width. With the inclusion of up to twist-6 contributions the calculations give the decay width $Γ=(10.04\pm0.88)\times10^{-14}{GeV}$ for Chernyak-Zhitnitsky-type(CZ-type) current and $Γ=(6.45\pm1.06)\times10^{-14}{GeV}$ for Ioffe-type current. The Ioffe-type interpolating current is found to be better for the estimation of the decay rate from a comparison with experimental data.
description: 12 pages, 4 figures
Existence of multi-pulses of the regularized short-pulse and Ostrovsky equations
Creators: name: Manukian, Vahagn
name: Costanzino, Nick
name: Jones, Christopher K. R. T.
name: Sandstede, Bjorn
Publisher: name: arXiv
Year: 2009
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The existence of multi-pulse solutions near orbit-flip bifurcations of a primary single-humped pulse is shown in reversible, conservative, singularly perturbed vector fields. Similar to the non-singular case, the sign of a geometric condition that involves the first integral decides whether multi-pulses exist or not. The proof utilizes a combination of geometric singular perturbation theory and Lyapunov--Schmidt reduction through Lin's method. The motivation for considering orbit flips in singularly perturbed systems comes from the regularized short-pulse equation and the Ostrovsky equation, which both fit into this framework and are shown here to support multi-pulses.
description: 16 pages, 2 figures
NEGATION AS A LOGICAL-GRAMMATICAL CATEGORY
Creators: name: Ochilova, Nasiba
Publisher: name: Zenodo
Year: 2023

description: Negation is one of the inherently existing undivided semantically connotational categories characteristic of the entire linguistic picture of the world, which cannot be defined through simpler semantic elements. Negation can be expressed by negative words, a negative prefix, a negative form of a verb, and may also not be expressed separately, that is, as a component of the meaning of a word or an entire sentence.
La solitude et la fraternite chez Camus
Creators: name: Farrall, SN
Publisher: name: University Of Tasmania
Year: 2023

description: In this thesis I have attempted to show the signifcance of the themes of solitude and fraternity in Camus' work and also for our age, when the disintegration of commonly accepted social values and the so-called 'death' of God, combined with the horrors of two world wars and the concentration camps have left man more alone than ever before.I have studied in particular two kinds of solitude that dominate Camus' work: the solitude of old age and the solitude of which comes from believing that man is exiled in an absurd and hostile world.
Deconfinement transition in protoneutron stars: analysis within the Nambu-Jona-Lasinio model
Creators: name: Lugones, G.
name: Carmo, T. A. S. do
name: Grunfeld, A. G.
name: Scoccola, N. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the effect of color superconductivity and neutrino trapping on the deconfinement transition of hadronic matter into quark matter in a protoneutron star. To describe the strongly interacting matter a two-phase picture is adopted. For the hadronic phase we use different parameterizations of a non-linear Walecka model which includes the whole baryon octet. For the quark matter phase we use an $SU(3)_f$ Nambu-Jona-Lasinio effective model which includes color superconductivity. We impose color and flavor conservation during the transition in such a way that just deconfined quark matter is transitorily out of equilibrium with respect to weak interactions. We find that deconfinement is more difficult for small neutrino content and it is easier for lower temperatures although these effects are not too large. In addition they will tend to cancel each other as the protoneutron star cools and deleptonizes, resulting a transition density that is roughly constant along the evolution of the protoneutron star. According to these results the deconfinement transition is favored after substantial cooling and contraction of the protoneutron star.
In vivo efficacy of carvacrol on Campylobacter jejuni prevalence in broiler chickens during an entire fattening period
Creators: name: Szott, Vanessa
name: Reichelt, B.
name: Alter, T.
name: Friese, A.
name: Roesler, U.
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Campylobacter jejuni
subject: carvacrol
subject: broiler
subject: essential oils
subject: feed additive
subject: seeder bird
subject: prevalence
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::636 Viehwirtschaft

description: Carvacrol, a primary constituent of plant essential oils (EOs), and its antimicrobial activity have been the subject of many in vitro studies. Due to an increasing demand for alternative antimicrobials and an emerging number of antibiotic resistant bacteria, the use of essential oils has played a major role in many recent approaches to reduce Campylobacter colonization in poultry before slaughter age. For that purpose, the reducing effect of carvacrol on Campylobacter jejuni prevalence in broilers was determined in vivo in an experimental broiler chicken model during an entire fattening period. Carvacrol was added to the feed in a concentration of 120 mg/kg feed four days post hatch until the end of the trial. In this study, we demonstrated a statistically significant decrease of C. jejuni counts by 1.17 decadic logarithm (log10) most probable number (MPN)/g in cloacal swabs during starter and grower periods (corresponding to a broilers age between 1 and 28 days). Similar results were observed for colon enumeration at the end of the trial where C. jejuni counts were significantly reduced by 1.25 log10 MPN/g. However, carvacrol did not successfully reduce Campylobacter cecal colonization in 33-day-old broilers.
Additional file 1 of Toxic effect window of ovarian development in female offspring mice induced by prenatal prednisone exposure with different doses and time
Creators: name: Huang, Jing
name: Wu, Tiancheng
name: Li, Yating
name: Zhang, Yuanzhen
name: Yu, Xingjiang
name: Xu, Dan
name: Wang, Hui
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Table S1: Oligonucleotide primers and PCR conditions of the mouse in real-time quantitative PCR
Distinguishability of quantum states under restricted families of measurements with an application to quantum data hiding
Creators: name: Matthews, William
name: Wehner, Stephanie
name: Winter, Andreas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Every sufficiently rich set of measurements on a fixed quantum system defines a statistical norm on the states of that system via the optimal bias that can be achieved in distinguishing the states using measurements from that set (assuming equal priors). The Holevo-Helstrom theorem says that for the set of all measurements this norm is the trace norm. For finite dimension any norm is lower and upper bounded by constant (though dimension dependent) multiples of the trace norm, so we set ourselves the task of computing or bounding the best possible "constants of domination" for the norms corresponding to various restricted sets of measurements, thereby determining the worst case and best case performance of these sets relative to the set of all measurements. We look at the case where the allowed set consists of a single measurement, namely the uniformly random continuous POVM and its approximations by 2-designs and 4-designs respectively. Here we find asymptotically tight bounds for the constants of domination. Furthermore, we analyse the multipartite setting with any LOCC measurement allowed. In the case of two parties, we show that the lower domination constant is the same as that of a tensor product of local uniformly random POVMs (up to a constant). This answers in the affirmative an open question about the (near-)optimality of bipartite data hiding: The bias that can be achieved by LOCC in discriminating two orthogonal states of a d x d bipartite system is Omega(1/d), which is known to be tight. Finally, we use our analysis to derive certainty relations (in the sense of Sanchez-Ruiz) for any such measurements and to lower bound the locally accessible information for bipartite systems.
description: 28 pages and 1 figure. Comments welcome. v2: Tightness of an inequality demonstrated (it was left open in v1). Thanks to A. Montanaro
'Who'll come a Waltzing Matilda with me?' Stock theft and colonial relations in Van Diemen's Land.
Creators: name: Febey, K
Publisher: name: University Of Tasmania
Year: 2023

description: Between 1787 and 1852, 16,280 men and 920 women were transported from Britain to Australia for the crime of stock theft.The majority of the men, 10,280 were from England, aged in their early twenties and were single.100 women and 6,240 men were sentenced to transportation for life for these crimes. It is somewhat ironic that they should become the founding fathers and mothers of a nation, which should celebrate stock theft as one of its key iconic symbols. The words of 'Waltzmg Matilda' describe in verse the complex and often ambivalent role that stock and stock theft played in forging colonial social relations. All of these are themes which are central to this thesis. It focuses on these issues, in a more broader sense and argues that sheep, cattle and horses were a form of property around which many social, economical and political relations were based. Furthermore, it explores the fact that stock was an especially important delineator of social relations on the colonial frontier. It is a story that transcends the usual boundaries of class and race, but it does not preclude them either.
Fabrication of an efficient vanadium redox flow battery electrode using a free-standing carbon-loaded electrospun nanofibrous composite
Creators: name: Maleki, Mahboubeh
name: El‑Nagar, Gumaa A.
name: Bernsmeier, Denis
name: Schneider, Jonathan
name: Roth, Christina
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Vanadium redox flow batteries
subject: VRFBs
subject: nanofibrous composite
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::541 Physikalische Chemie

description: Vanadium redox flow batteries (VRFBs) are considered as promising electrochemical energy storage systems due to their efficiency, flexibility and scalability to meet our needs in renewable energy applications. Unfortunately, the low electrochemical performance of the available carbon-based electrodes hinders their commercial viability. Herein, novel free-standing electrospun nanofibrous carbon-loaded composites with textile-like characteristics have been constructed and employed as efficient electrodes for VRFBs. In this work, polyacrylonitrile-based electrospun nanofibers loaded with different types of carbon black (CB) were electrospun providing a robust free-standing network. Incorporation of CBs (14% and 50% weight ratio) resulted in fibers with rough surface and increased mean diameter. It provided higher BET surface area of 83.8 m2 g−1 for as-spun and 356.7 m2 g−1 for carbonized fibers compared to the commercial carbon felt (0.6 m2 g−1). These loaded CB-fibers also had better thermal stability and showed higher electrochemical activity for VRFBs than a commercial felt electrode.
MLOps for Scarce Image Data: A Use Case in Microscopic Image Analysis
Creators: name: Yamachui Sitcheu, Angelo Jovin
name: Friederich, Nils
name: Baeuerle, Simon
name: Neumann, Oliver
name: Reischl, Markus
name: Mikut, Ralf
Publisher: name: KIT Scientific Publishing
Year: 2023
Subjects: MLOps
Deep Learning
DevOps
Machine Learning

description: Nowadays, Machine Learning (ML) is experiencing tremendous popularity that has never been seen before. The operationalization of ML models is governed by a set of concepts and methods referred to as Machine Learning Operations (MLOps). Nevertheless, researchers, as well as professionals, often focus more on the automation aspect and neglect the continuous deployment and monitoring aspects of MLOps. As a result, there is a lack of continuous learning through the flow of feedback from production to development, causing unexpected model deterioration over time due to concept drifts, particularly when dealing with scarce data. This work explores the complete application of MLOps in the context of scarce data analysis. The paper proposes a new holistic approach to enhance biomedical image analysis. Our method includes: a fingerprinting process that enables selecting the best models, datasets, and model development strategy relative to the image analysis task at hand; an automated model development stage; and a continuous deployment and monitoring process to ensure continuous learning. For preliminary results, we perform a proof of concept for fingerprinting in microscopic image datasets.
A "Toy" Model for Operational Risk Quantification using Credibility Theory
Creators: name: Bühlmann, Hans
name: Shevchenko, Pavel V.
name: Wüthrich, Mario V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: To meet the Basel II regulatory requirements for the Advanced Measurement Approaches in operational risk, the bank's internal model should make use of the internal data, relevant external data, scenario analysis and factors reflecting the business environment and internal control systems. One of the unresolved challenges in operational risk is combining of these data sources appropriately. In this paper we focus on quantification of the low frequency high impact losses exceeding some high threshold. We suggest a full credibility theory approach to estimate frequency and severity distributions of these losses by taking into account bank internal data, expert opinions and industry data.
Evidence for condensed-phase methane enhancement over Xanadu on Titan
Creators: name: Ádámkovics, M.
name: de Pater, I.
name: Hartung, M.
name: Barnes, J. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present evidence for condensed phase methane precipitation near Xanadu using nine nights of observations from the SINFONI integral-field spectrograph at the Very Large Telescope and imaging analysis with empirical surface subtraction. Radiative transfer models are used to support the imaging technique by simulating the spectrometer datacubes and testing for variations in both the surface reflectivity spectrum and atmospheric opacity. We use the models and observations together to argue against artifacts that may arise in the image analysis. High phase angle observations from Cassini/VIMS are used to test against surface scattering artifacts that may be confused with sources of atmospheric opacity. Although changes in the surface reflectivity spectrum can reproduce observations from a particular viewing geometry on a given night, multiple observations are best modeled by condensed-phase methane opacity near the surface. These observations and modeling indicate that the condensed-phase methane opacity observed with this technique occurs predominantly near Xanadu and is most likely due to precipitation.
description: accepted for publication in Planetary and Space Science; http://dx.doi.org/10.1016/j.pss.2009.07.001
title: „Beratung und Supervision in der Lehrer*innenbildung“
title: Ein Tagungsbericht zur Online-Tagung am Zentrum für Praxisreflexion in der Lehrer*innenbildung vom 18./19. Juni 2021 in Bielefeld
titleType: Subtitle
Creators: name: Gröning, Katharina
Publisher: name: FoRuM Supervision - Zeitschrift für Beratungswissenschaft und Supervision
Year: 2021

description: FoRuM Supervision - Zeitschrift für Beratungswissenschaft und Supervision, 2021: Heft 58 - Zeiten der Pandemie
Chinese OFDI in Australia : drivers and entry modes
Creators: name: Cen, Z
Publisher: name: University Of Tasmania
Year: 2023

description: Until recently entry mode studies focused largely on the choices made by North American and European firms and entry mode choices of firms from developing countries were largely neglected. In recent years the focus of entry mode research has attempted to remedy this neglect in large part because of the rapid economic growth that has taken place in several emerging economies and, increasingly, the rapid increase in their direct investments in foreign markets. China is perhaps the most frequently investigated case. However, although there are now a limited number of studies looking at the investment motivations and entry mode choices of Chinese investors and their determinants, there has been no detailed study of Chinese OFDI and entry mode choices in regard to Australian markets. This is despite the fact that Australia is a major recipient of Chinese OFDI and has been so for some thirty years. Hence the goal of this study is to remedy this deficiency and, in addition, to throw further light on the determinants of entry mode choice by firms from emerging economies. The study adopts no single theoretical or conceptual framework, given that each has a number of limitations. Instead, it draws upon a range of frameworks, notably Dunning‚ÄövÑvºs eclectic paradigm on firms‚ÄövÑvº internationalisation process (1980 & 1988), the institutional framework (for example, North, 1990; Scott, 1995; Peng, 2002), and the resource-based perspective (for example, Barney, 1991). The thesis, based on a series of case studies, found that Chinese firms invest in Australia for a variety of reasons, including market-seeking, resource-seeking, asset-seeking, as well as a newly identified permanent residency or welfare-seeking motivations. It also found that larger Chinese MNEs with previous international experience preferred to have full control in their Australian affiliates, while those who perceive a high level of scrutiny and constraints imposed by the Australian government upon their investments were prone to choose a shared control mode. The findings of this thesis suggest that a single theoretical perspective is not comprehensive enough to explain OFDI initiated from China into a developed country such as Australia. On a practical level, it may provide some guidance on the internationalisation decisions of those Chinese MNEs who intend to conduct OFDI. In addition, the significant effect government can bring upon towards Chinese MNEs‚ÄövÑvº entry mode decisions as found in this study also signals that thesis is of value to policy makers.
K/pi Fluctuations at Relativistic Energies
Creators: name: Abelev, B. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report results for $K/π$ fluctuations from Au+Au collisions at $\sqrt{s_{NN}}$ = 19.6, 62.4, 130, and 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. Our results for $K/π$ fluctuations in central collisions show little dependence on the incident energies studied and are on the same order as results observed by NA49 at the Super Proton Synchrotron in central Pb+Pb collisions at $\sqrt{s_{NN}}$ = 12.3 and 17.3 GeV. We also report results for the collision centrality dependence of $K/π$ fluctuations as well as results for $K^{+}/π^{+}$, $K^{-}/π^{-}$, $K^{+}/π^{-}$, and $K^{-}/π^{+}$ fluctuations. We observe that the $K/π$ fluctuations scale with the multiplicity density, $dN/dη$, rather than the number of participating nucleons.
description: 6 pages, 4 figures
D3.4 - Pilot Study on novel land-use planning (LUP) approaches
Creators: name: Rajé, Fiona
name: Hooper, Paul
name: Delfar, Nataša
name: Rahne, Sara
name: Schreckenberg, Dirk
name: Lavandier, Catherine
name: Dedieu, Romain
name: Marki, Ferenc
name: van Oosten, Nico
name: Meliveo, Luis
Publisher: name: Zenodo
Year: 2022

description: How a soundscape mobile app can inform LUP decisions and operational proceduresHow a soundscape mobile app can inform LUP decisions and operational procedures This study sought to contribute to a greater understanding of people’s perception of soundscape in general and, thereby, infer the effects of noise on the quality of life of residents near airports. Recent technological advances have enabled an increased opportunity to conduct novel sound research by deploying novel, tailored mobile phone applications. In this case, the AnimApp was developed and used to collect a range of momentary situational and environmental perception data to determine whether such information can help to improve understanding of the effects of noise on humans. The specific intention was to carry out an experience sampling method (ESM) study about the impact of the soundscape and visual environment on people’s perception of their environment and quality of life around airports. However, the project’s timing meant that the app was deployed during the period of COVID pandemic restrictions in the early summer of 2021. Thus, the aim had to be adapted to reflect that a) air traffic volumes were significantly reduced and b) that people’s activities were affected by mobility and accessibility restrictions. Fiona Rajé (MMU), Paul Hooper (MMU), Sonja Jeram (NIJZ), Nataša Delfar (NIJZ), Sara Rahne (NIJZ), Dirk Schreckenberg (ZEUS), Catherine Lavandier (UCP/CYU), Romain Dedieu (UCP/CYU), Ferenc Marki (BME), Nico van Oosten (ANOTEC), Luis Meliveo (ANOTEC)
Berry's phase in the two-level model
Creators: name: Pinto, A. C. Aguiar
name: Moutinho, M.
name: Thomaz, M. T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the adiabatic evolution of a two-level model in the presence of an external classical electric field. The coupling between the quantum model and the classical field is taken in the electric dipole approximation. In this regime, we show the absence of geometric phases in the interacting two-level model in the presence of any periodic real time-dependent classical electric field. We obtain a conservative scalar potential in the calculation of Berry's phases of the instantaneous eigenstates of the model. For complex electric fields, we recover the existence of geometric phases. In particular, the geometric phases of the instantaneous eigenstates of the model in the presence of a positive or of a negative frequency component of the monochromatic electric field differ by an overall sign. As a check on our results, we map this interacting two-level model onto a spin-1/2 model under the action of a classical magnetic field. We confirm that the first one acquires Berry's phase only in the rotating wave approximation [RWA].
description: 11 pages, no figure
Linear programming model for land resource allocation in the Lower Mainland of British Columbia.
Creators: name: Gardner, Andrew George
Publisher: name: University of British Columbia
Year: 2011

description: The expanding population in the Lower Mainland of British Columbia, has been accompanied by a commensurate increase in the pressure of demand for land. In recent years attention has been focused on the competition for the regional land resources by agricultural and urban interests. Coincident with this conflict, public concern has been expressed over market allocation of agricultural land to urban uses. In this respect reference has often been made by the public, to the benefits of planning regional land allocation. To date no quantitative economic examination of this trend in land resource allocation has been undertaken. This thesis is an attempt to show how a mathematical technique - linear programming, - can be used to analyse and evaluate such land allocation problems. The linear programming model optimizes a system based on a conceptual framework in which the stated objective is the allocation of land to its "highest and best use". Economic, highest and best use of land is shown to exist when the activity bidding the highest price for the resource is allocated the site. Utilizing Lower Mainland Regional Planning Board land inventories and population projections, and Vancouver Real Estate Board price data, the specifications of the linear programming model were formulated such that the allocation of land uses results in the maximization of the aggregate value of the regional land base. The model was used to analyse the allocation of land in the Lower Mainland of British Columbia for four time periods: 1966-1971, 1966-1976, 1966-1981 and 1966-1986. In each case, the pattern of land use associated with the maximum aggregate land value as determined by the model, shows from an economic standpoint, the most efficient possible use of land in the whole region. The plans derived are normative in that they show the pattern of land use development which should be followed to achieve optimum land allocation. The model, apart from being normative, also appears positive in that it shows the actual present day trend of continuing urban expansion onto rural land. The positive aspects of the model were attributed to the mechanism by which the real estate market operates, and it was hypothesised that by being to some extent positive, the model could be used for predictive purposes. This specific model appears limited in its applicability on account of certain problems of specification and data availability, but the methodology is considered to be a significant advance on present land use planning concepts which lack explicit economic criteria and objectives applicable to land resource development.
MPEC 2023-Y47 : 2023 XG18
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 XG18

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Scattering tightly bound dimers off a scattering potential
Creators: name: Weiss, Christoph
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The motion of two attractively interacting atoms in an optical lattice is investigated in the presence of a scattering potential. The initial wavefunction can be prepared by using tightly bound exact two-particle eigenfunction for vanishing scattering potential. This allows to numerically simulate the dynamics in the generation of two-particle Schrodinger cat states using a scheme recently proposed for scattering of quantum matter wave solitons.
description: 5 pages 4 figures
Investigating the effects of motor symptoms on the development and assessment of non-motor symptoms in idiopathic Parkinson's disease
Creators: name: Green, L
Publisher: name: University Of Tasmania
Year: 2023

description: Parkinson's disease (PD) is a degenerative sub-cortical neurological disorder primarily involving morphologic and neurochemical changes in the human brain, particularly the basal ganglia. Basal ganglia is a term used to identify areas of the basal forebrain and midbrain known to be involved in the control of movement and some higher cortical functions. Cardinal motor symptoms in PD include muscle rigidity, tremor, bradykinesia, a loss of postural reflexes and, in extreme cases, akinesia. These symptoms can be experienced either unilaterally or bilaterally. Non-motor symptoms in PD include cognitive decline, depression, sleep disturbances, hallucinations, and apathy. Changes in cognitive functioning in PD can range from mild cognitive impairment to Parkinson's disease dementia (PDD). While studies investigating a potential relationship between motor symptom phenotype and cognitive decline in PD exist, results have been equivocal to date. Additional research has been recommended and this was the aim of the current studies. Participants (n = 88) were recruited from the Royal Hobart Hospital and administered a comprehensive assessment battery that included demographic and mood measures, a range of cognitive measures covering immediate and delayed memory, executive functioning, visuospatial functioning, and language, as well as several tests of motor functioning. Study One examined the link between current motor functioning and cognitive performance. Despite no significant between groups differences on demographic variables such as age, years of education, pre-morbid cognitive functioning, mood, and disease duration, participants in the lower motor functioning group consistently performed more poorly on all cognitive tasks included in the assessment battery. Study Two examined the impact of side of motor symptom onset, comparing the current cognitive functioning of participants who experience left sided, right sided, or bilateral motor symptoms at time of initial diagnosis. While no significant differences were found between those with left sided and right sided motor symptom onset, those with bilateral motor symptom onset were significantly (p < .001) more likely to achieve the poorest cognitive results. Study Three examined the potentially confounding impact of motor functioning and side of onset when assessing anxiety and depression in a PD population using the two-factor Hospital Anxiety and Depression Scale (HADS) as well as a three-factor model of the HADS that separated anxiety, depression, and psychomotor symptoms. Results cautioned against reliance on the traditional HADS for detecting mood symptoms in people with PD. Overall results indicate that motor symptom presentation can provide valuable information regarding cognitive functioning and mood in PD populations.
Ion pairing in ionic liquids
Creators: name: Bakis, Eduards
Publisher: name: Imperial College London
Year: 2019

description: In liquids, a plurality of forces exist that add together and lead to physical properties that can be determined by a single measurement. It is therefore necessary to understand these forces and evaluate their contribution in dictating one or another physical property of the liquid. Only then a meaningful material design will be possible. Ionic liquids are low-melting salts with a phenomenal long-range structuring and complex interaction landscape. Among other sustainable applications, these conductive materials are primarily considered for energy storage and conversion. Many ionic liquid properties are explained by their strong Coulombic interactions. Ion pairing is a process that often is associated with the limited electrical conductivity of ionic liquids, though evidence for existence of long-lived ion pairs in these materials is scarce. In this study, conditions that could force the ion pairing in ionic liquids have been challenged by designing and studying strongly-interacting functionalized and dicationic ionic liquids. A polarity and ion pairing study using Kosower's salt, a [1+][1–] electrolye, was performed and revealed a lack of preferential ion association via ion pairing in these highly polar ionic liquids. Novel ion pairing dyes with increased ion charges [2+][2–] were then designed and applied. The spectroscopic and physical properties were fine-tuned via multiple syntheses, and bis-(pivaloyloxymethyl)-4,4'-bipyridinium tetrathiosquarate found as a suitable [2+][2–] ion pairing probe. Study of a conventional ionic liquid with this dye revealed no fundamentally different behaviour than with Kosower's salt. It was concluded that [2+][2–] and [2+][1–] solutes form ideal solutions with ionic liquids and no preferential association via ion pairing in these solutions can be observed. This contradicts the point of view that ion pairing accounts for the reduced charge carrier mobility in IL electrolytes. In fact, forcing ion pairing in these charge-screened materials appears to be very difficult, if not impossible.
Breuil-Mézard conjectures for central division algebras
Creators: name: Dotto, Andrea
Publisher: name: Imperial College London
Year: 2019

description: We give a parametrization of the inertial classes of smooth representations of inner forms of GL(n) over a p-adic field, based on type-theoretic invariants. Then we give a complete description of the behaviour of this parametrization under the Jacquet–Langlands correspondence, proving a conjecture of Broussous, Sécherre and Stevens on preservation of endo-classes. As an application of this result, we construct a Jacquet–Langlands transfer of types and Serre weights for central division algebras, and use it to deduce a form of the Breuil–Mézard conjecture, for discrete series Galois deformation rings and types of central division algebras, from the conjectural statement for GL(n).
The effect of debonding on the vibration behaviour of CFRP/Epoxy sandwich panels
Creators: name: Tsai, Shang-Nan
Publisher: name: Imperial College London
Year: 2019

description: Fibre composite materials are widely used because they are light but strong. This work discusses two topics of composites: 1. Vibration behaviours of debonded sandwich structures. 2. The fracture and fatigue behaviours of carbon fibre reinforced polymers (CFRPs) with nanoparticle-modified sizing. Debonds between the facesheets and the core of sandwich structures can weaken the structures, whilst affecting its vibration response. The vibration behaviours of sandwich structures were analysed by conducting hammer impact tests and finite element simulations on the structures with different debond configurations, facesheet stacking, matrix modifiers and curvatures. For the flat structure using the [0°]4 facesheets, the natural frequency significantly decreased by 57 % when there was an 80 mm debonded region due to the reduction in the stiffness. The natural frequencies of the bending modes dropped most significantly when two debonds were present in the same location for both upper and lower facesheets. The curvature had more effect on the lateral modes than other modes since the mode shapes involved torsional movements. Reduction in the natural frequencies can cause a structure to vibrate at resonance and hence cause structural failure, which is critical for the applications of sandwich structures. Fibre composites with thermoset polymer matrices are widely used, but the brittleness of thermoset polymers used as the matrix can limit their applications. In this work, silica nanoparticles (SNPs) were used to modify two carbon-fibre sizings. Mode I interlaminar fracture tests and fatigue crack growth tests were conducted on the sizing-modified CFRPs. Although there was no significant change in the fatigue crack growth rate, the fracture energy was significantly increased from 166 J/m2 to 220 J/m2 with the addition of only 0.89 wt% on fibre weight of SNPs. This is significantly more efficient than directly adding SNPs into the matrix to achieve the same improvement.
ANALYSIS OF TAXES AND THEIR ROLE IN THE MODERN ECONOMY
Creators: name: Turaboyev, Kambarali
Publisher: name: Zenodo
Year: 2023

description: The purpose of this article is the study and analysis of taxes, their role in the modern economy. Taxes have been a necessary link in economic relations in society since the emergence of the state. The development and change in forms of government are always accompanied by a transformation of the tax system. In a modern civilized society, taxes are the main form of state revenue. In addition to this purely financial function, the tax mechanism is used for the economic impact of the state on social production, its dynamics and structure, and on the state of scientific and technological progress.
title: Ð§Ð¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¸ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½Ð¾Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÐ»Ð¾Ð²Ð¸Ð¹ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð»Ð°Ð·Ð¼ÐµÐ½Ð½Ð¾Ð¹ ÑÑÑÑÐ¸ Ð±Ð°ÑÑÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ°Ð·ÑÑÐ´Ð° Ð² Ð¿Ð¾ÑÐ¾ÐºÐµ Ð³ÐµÐ»Ð¸Ñ
title: Ð¼Ð°Ð³Ð¸ÑÑÐµÑÑÐºÐ°Ñ Ð´Ð¸ÑÑÐµÑÑÐ°ÑÐ¸Ñ
titleType: Subtitle
Creators: name: ÐÑÑÐ°ÐºÐ¸Ð½Ð°, ÐÐ°ÑÐ°Ð»ÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2016
Subjects: ÐÐ»Ð°Ð·Ð¼Ð° (ÑÐ¸Ð·.)
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description: Ð ÑÐ°Ð±Ð¾ÑÐµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð»Ð°ÑÑ ÑÑÑÑÑ ÑÐ¾Ð»Ð¾Ð´Ð½Ð¾Ð¹ Ð¿Ð»Ð°Ð·Ð¼Ñ, ÑÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð°Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð±Ð°ÑÑÐµÑÐ½Ð¾Ð³Ð¾ ÑÐ°Ð·ÑÑÐ´Ð° Ñ Ð¿ÑÐ¾Ð¿ÑÑÐºÐ°Ð½Ð¸ÐµÐ¼ Ð³ÐµÐ»Ð¸Ñ ÑÐµÑÐµÐ· ÑÐ°Ð·ÑÑÐ´Ð½ÑÐ¹ Ð¿ÑÐ¾Ð¼ÐµÐ¶ÑÑÐ¾Ðº. Ð­ÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÐµ Ð´Ð°Ð½Ð½ÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ ÑÑÑÑÐ¸ Ð¿Ð»Ð°Ð·Ð¼Ñ Ð² Ð»Ð°Ð¼Ð¸Ð½Ð°ÑÐ½Ð¾Ð¼ ÑÐµÐ¶Ð¸Ð¼Ðµ ÑÑÐ°Ð²Ð½Ð¸Ð²Ð°Ð»Ð¸ÑÑ Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ°Ð¼Ð¸ ÑÐ°ÑÑÐµÑÐ¾Ð² Ð² OpenFoam Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÐ¾Ð² ÑÑÑÑÐ¸ Ð¾Ñ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ Ð½Ð°Ð¿ÑÑÐºÐ°, Ð´Ð¸Ð°Ð¼ÐµÑÑÐ° ÑÐ¾Ð¿Ð»Ð° Ð¸ Ð´Ñ. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¾Ð±Ð¾ÑÐ½Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ°ÑÑÐµÑÐ½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»Ð¸.
description: Cold helium plasma jets formed by dielectric barrier discharge is studied in the work. Experimental results for the cold plasma jets were combined with numerical simulation results in OpenFoam under a laminar flow regime to determine curves of plasma jet properties in variable outlet velocities at different jet diameters and etc. It was proved a numerical model validation.
Integrated multi-scale mathematical models for biologics process development
Creators: name: Martins De Jesus Lima Grilo, António Carlos
Publisher: name: Imperial College London
Year: 2019

description: The therapeutic monoclonal antibody (mAb) market is witnessing an unprecedented growth having nearly duplicated since 2012. Faster regulatory approvals and an increasing number of biosimilars are among the most important mAb market expansion drivers. As the market grows, so does competition making timelines more aggressive. Additionally, political pressure from governments and regulatory authorities over prices of life-saving biological drugs is also increasing. As a consequence, biopharmaceutical companies need to reduce costs while being faster, particularly in having drug substance ready for clinical trials. To this aim, reducing process development times and costs is crucial. In this thesis, mathematical models integrating several cellular activities important for biomanufacturing are developed. A previously published model development framework is followed to ensure the development of predictive models. An integrated framework combining multivariate data analysis and biomarker identification techniques for cell culture understanding supports the development of predictive mathematical models for two industrially relevant cell lines, GS-NS0 and GS-CHO, capturing cell cycle, metabolism, energy production, mAb production and apoptosis. As the models herein suggested can capture population heterogeneity by describing the cell cycle and gene expression, their applications to bioreactor optimization is envisaged. To this aim, the models developed in this work can be combined with the description of product quality attributes and/or computational fluid dynamics descriptions of bioreactors. These are deemed important applications to accomplish significant reduction in process development time and costs.