cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Infinite-Horizon Optimal Control of Switched Boolean Control Networks with Average Cost: An Efficient Graph-Theoretical Approach
Creators: name: Gao, Shuhua
name: Sun, Changkai
name: Xiang, Cheng
name: Qin, Kairong
name: Lee, Tong Heng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: This study investigates the infinite-horizon optimal control problem for switched Boolean control networks with an average-cost criterion. A primary challenge of this problem is the prohibitively high computational cost when dealing with large-scale networks. We attempt to develop a more efficient and scalable approach from a graph-theoretical perspective. First, a weighted directed graph structure called the $\textit{optimal state transition graph}$ (OSTG) is established, whose edges encode the optimal action for each one-step transition between states reachable from a given initial state subject to various constraints. Then, we reduce the infinite-horizon optimal control problem into a minimum mean cycle (MMC) problem in the OSTG. Finally, we develop a novel algorithm that can quickly find a particular MMC by resorting to Karp's algorithm in graph theory and construct afterward an optimal switching and control law based on state feedback. Time complexity analysis shows that our algorithm can outperform all existing methods in terms of time efficiency. A 16-node signaling network in leukemia is used as a benchmark to test its effectiveness. Results show that the proposed graph-theoretical approach is much more computationally efficient: it runs hundreds or even thousands of times faster than existing methods.
Erstellung eines Konzeptes für eine Fertigungseinrichtung zur Realisierung von Teileverbindungen durch Laserstrahl-Schweißen
Creators: name: Zhang, Shengyin
Publisher: name: Hochschulbibliothek, Hochschule Merseburg
Year: 2021
Subjects: subject: Konzept einer Fertigungseinrichtung
subject: Laserstrahl-Schweißen
subject: DDC::6** Technik, Medizin, angewandte Wissenschaften::67* Industrielle Fertigung

description: Diese Abschlussarbeit analysiert hauptsächlich das Prinzip des Laserschweißens und seine Anwendung und Entwicklung in der realen Produktion. Als hochwertiges, hochpräzises und schnelles fortschrittliches Schweißverfahren hat das Laserschweißen breite Aufmerksamkeit auf sich gezogen.
Does the Transverse Electric Zero Mode Contribute to the Casimir Effect for a Metal?
Creators: name: Hoye, J. S.
name: Brevik, I.
name: Aarseth, J. B.
name: Milton, K. A.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The finite temperature Casimir free energy, entropy, and internal energy are considered anew for a conventional parallel-plate configuration, in the light of current discussions in the literature. In the case of an "ideal" metal, characterized by a refractive index equal to infinity for all frequencies, we recover, via a somewhat unconventional method, conventional results for the temperature dependence, meaning that the zero-frequency transverse electric mode contributes the same as the transverse magnetic mode. For a real metal, however, approximately obeying the Drude dispersive model at low frequencies, we find that the zero-frequency transverse electric mode does not contribute at all. This would appear to lead to an observable temperature dependence and a violation of the third law of thermodynamics. It had been suggested that the source of the difficulty was the behaviour of the reflection coefficient for perpendicular polarization but we show that this is not the case. By introducing a simplified model for the Casimir interaction, consisting of two harmonic oscillators interacting via a third one, we illustrate the behavior of the transverse electric field. Numerical results are presented based on the refractive index for gold. A linear temperature correction to the Casimir force between parallel plates is indeed found which should be observable in room-temperature experiments, but this does not entail any thermodynamic inconsistency.
description: 31 pages, REVTeX 4, 6 eps figures,to be published in Phys. Rev. E. This revision contains a number of small corrections and improvements, and two new references
Higher-order topological solitonic insulators
Creators: name: Li, Z. -X.
name: Cao, Yunshan
name: Yan, Peng
name: Wang, X. R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Pursuing topological phase and matter in a variety of systems is one central issue in current physical sciences and engineering. Motivated by the recent experimental observation of corner states in acoustic and photonic structures, we theoretically study the dipolar-coupled gyration motion of magnetic solitons on the two-dimensional breathing kagome lattice. We calculate the phase diagram and predict both the Tamm-Shockley edge modes and the second-order corner states when the ratio between alternate lattice constants is greater than a critical value. We show that the emerging corner states are topologically robust against both structure defects and moderate disorders. Micromagnetic simulations are implemented to verify the theoretical predictions with an excellent agreement. Our results pave the way for investigating higher-order topological insulators based on magnetic solitons.
description: 11 pages, 13 figures
Richard of St. Victor's argument for the necessity of the Trinity : an exposition and analysis of the argument for a tri-personal God in 'De Trinitate'
Creators: name: Bray, Dennis
Publisher: name: University of St Andrews
Year: 2022
Subjects: subject: Richard of Saint Victor
subject: Doctrine of the Trinity
subject: Creedal trinitarianism
subject: Divine substance
subject: Divine persons
subject: Triadic speculation
subject: Natural theology
subject: Arguments for the Trinity
subject: Metaphysics of the Trinity
subject: Trinitarian love
subject: BT110.B82
subject: Richard, of St. Victor, -1173. De Trinitate
subject: Trinity

description: In his magnum opus, ‘De Trinitate’, the twelfth century canon Richard of St. Victor offers sustained reflection on core dogmatic claims from the Athanasian creed. At the heart of the treatise is Richard’s argument for exactly three divine persons. Starting with the necessity of a single, maximally perfect divine substance, Richard reasons along four steps: (i) God must have maximal charity, or other-love; (ii) to be perfectly good, delightful, and glorious, God’s other-love must be shared among at least two, and (iii) among at least three, divine persons; (iv) the metaphysics of divine processions and love each ensure the impossibility of four divine persons. Scripture and trustworthy church authorities already give Richard certainty in these truths of faith. Even so, as an act of ardent love Richard contemplates on the Trinity as seen in creation. From this epistemic point of departure, he supports his conclusions from common human experience alone. Recently, philosophers of religion – such as Richard Swinburne, William Hasker, and William Lane Craig – have used Richard’s trinitarian reflection as a springboard for constructive work in apologetics and ramified natural theology. Additionally, medieval and Victorine scholars have increasingly recognized the novelty and rigour of Richard’s contribution to trinitarian philosophical-theology. However, to date there has been no dedicated study of the heart of Richard’s project in ‘De Trinitate’. In this thesis I offer an historically informed exposition of Richard’s argument for the necessity of the Trinity, as well as philosophically informed analysis. Further, I address some of the most pressing concerns with Richard’s argument. Richard’s work is not only suggestive, but highly compelling. If sound, it is situated to contribute to the contemporary philosophical and theological trinitarian discussion. I conclude by considering its application for (so called) Latin and Social, as well as heterodox, trinitarian theologies.
The X-ray variability of high redshift QSOs
Creators: name: Manners, J.
name: Almaini, O.
name: Lawrence, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of X-ray variability in a sample of 156 radio quiet quasars taken from the ROSAT archive, covering a redshift range 0.1 < z < 4.1. A maximum likelihood method is used to constrain the amplitude of variability in these low signal to noise light curves. Through combining these data in ensembles we are able to identify trends in variability amplitude with luminosity and with redshift. The decline in variability amplitude with luminosity identified in local AGN (z < 0.1) is confirmed out to z=2. There is tentative evidence for an increase in QSO X-ray variability amplitude towards high redshifts (z > 2) in the sense that QSOs of the same X-ray luminosity are more variable at z > 2. We discuss possible explanations for this effect. The simplest explanation may be that high redshift QSOs are accreting at a larger fraction of the Eddington limit than local AGN.
description: 9 pages, 6 figures, MNRAS accepted
A classical family of elliptic curves having rank one and the $2$-primary part of their Tate-Shafarevich group non-trivial
Creators: name: Kezuka, Yukako
name: Li, Yongxiong
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 14H52, 11G05, 11R29

description: We study elliptic curves of the form $x^3+y^3=2p$ and $x^3+y^3=2p^2$ where $p$ is any odd prime satisfying $p\equiv 2\bmod 9$ or $p\equiv 5\bmod 9$. We first show that the $3$-part of the Birch-Swinnerton-Dyer conjecture holds for these curves. Then we relate their $2$-Selmer group to the $2$-rank of the ideal class group of $\mathbb{Q}(\sqrt[3]{p})$ to obtain some examples of elliptic curves with rank one and non-trivial $2$-part of the Tate-Shafarevich group.
description: 30 pages
ECOLOGY-ESA An African leaf-cutting, fungus-growing ant: a case of convergent evolution
Creators: name: Dejean, Alain
name: Naskrecki, Piotr
name: Faucher, Christian
name: Azémar, Frédéric
name: Tindo, Maurice
name: Manzi, Sophie
name: Gryta, Hervé
Publisher: name: figshare
Year: 2021
Subjects: subject: 60801 Animal Behaviour
subject: FOS: Biological sciences
subject: 60299 Ecology not elsewhere classified
subject: Evolutionary Biology
subject: 60505 Mycology

description: This repository includes one Table and five files presenting the details of metabarcoding analysis, as well as ITS1 sequences and OTUs for fungi recorded during this study.
 Table 3. List of sequences included in phylogenic trees (Capnodiales and Chaetothyriales).1- Capno-ITS-ML-Tree (ITS of the Capnodiales). Alignment of sequences and maximum likehood phylogenetic tree for Capnodiales s.l. showing the phylogenic position of the recorded OTUs belonging to Capnodiales s.l. 2- Chaeto-ITS-ML-Tree (ITS of Chaetothyriales). Alignment of sequences and maximum likehood phylogenetic tree for Chaetothyriales showing the phylogenic position of the recorded OTUs belonging to Chaetothyriales. 3- Tab_Data_All_Sequences_OTU. Datamatrix of sequences (reads) across samples 4- Blast_Results-First-50_Hits-Table-72_OTU. Dataset of BLAST results. List of the 50 first BLAST hits obtained with ITS1 sequences for each of the 72 OTUs recorded in Crematogaster nests. Best hits are in bold. 5- Tab-OTU-Seqs. List of recorded OTUs and their ITS1 sequences. OTUs belonging to Capnodiales s.l. and Chaetothyriales are in bold
Ultra-narrow linewidth hybrid integrated semiconductor laser
Creators: name: Fan, Youwen
name: van Rees, Albert
name: van der Slot, Peter J. M.
name: Mak, Jesse
name: Oldenbeuving, Ruud
name: Hoekman, Marcel
name: Geskus, Dimitri
name: Roeloffzen, Chris G. H.
name: Boller, Klaus-J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a hybrid integrated and widely tunable diode laser with an intrinsic linewidth as narrow as 40 Hz, achieved with a single roundtrip through a low-loss feedback circuit that extends the cavity length to 0.5 meter on a chip. Employing solely dielectrics for single-roundtrip, single-mode resolved feedback filtering enables linewidth narrowing with increasing laser power, without limitations through nonlinear loss. We achieve single-frequency oscillation with up to 23 mW fiber coupled output power, 70-nm wide spectral coverage in the 1.55 $μ$m wavelength range with 3 mW output, and obtain more than 60 dB side mode suppression. Such properties and options for further linewidth narrowing render the approach of high interest for direct integration in photonic circuits serving microwave photonics, coherent communications, sensing and metrology with highest resolution.
description: 13 pages, and 11 figures
Game On! Unlocking Synergies Between Video Games & Creative and Cultural Industries
Creators: name: Klimas, Patrycja
name: Radomska, Joanna
name: Wrona, Sylwia
name: Kościewicz, Dawid
name: Strzelec, Gabriela
Publisher: name: Zenodo
Year: 2024
Subjects: subject: GameHearts
subject: Video games
subject: Ecosystems
subject: Video Games
subject: Video Games/economics

description: It is a part of the European project GAMEHEARTS: Games, Heritage, Arts, & Sport: the economic, social, and cultural value of the European videogame ecosystem financed by European Union under the grant  agreement ID: 101132543. Project's DOI: 10.3030/101132543Project's website: gamehearts.eu. Project's profile at CORDIS portal: https://cordis.europa.eu/project/id/101132543.
Interpretations of the Accelerating Universe
Creators: name: Narlikar, J. V.
name: Vishwakarma, R. G.
name: Burbidge, G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is generally argued that the present cosmological observations support the accelerating models of the universe, as driven by the cosmological constant or `dark energy'. We argue here that an alternative model of the universe is possible which explains the current observations of the universe. We demonstrate this with a reinterpretation of the magnitude-redshift relation for Type Ia supernovae, since this was the test that gave a spurt to the current trend in favour of the cosmological constant.
description: 12 pages including 2 figures, minor revision, references added, a paragraph on the interpretation of the CMB anisotropy in the QSSC added in conclusion, general results unchanged. To appear in the October 2002 issue of the "Publications of the Astronmical Society of the Pacific"
Teachers’ perceptions of using peer-mediated instruction and intervention for supporting children’s social skills and play between children in inclusive preschools
Creators: name: Gladh, Maria
name: Siljehag, E.
name: Allodi, M. Westling
name: Sandall, S. R.
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Enabling peer play for preschool children with low social skills requires targeted measures for their social development and learning and interactions between them and their peers. Play Time/Social Time (PT/ST) is a peer-mediated instruction and intervention (PMII) with that purpose. This case study explored how four preschool teachers perceived the opportunities and obstacles of PT/ST, and how PMII compared to their current practices in inclusive Swedish preschools. Multiple data were collected: an intervention rating profile (IRP), audio-recorded coaching sessions, logbooks, checklists, and a group interview. The IRP revealed that the teachers rated PT/ST as highly feasible. Through qualitative analysis, we interpreted three themes demonstrating their perceptions: Special educational situations, Conditions for applications, and Professional reflections and learning. Concerning opportunities, the teachers perceived that PT/ST contributed to social skills progress and increased peer play for the target children. They also perceived that PT/ST contributed to their current practices when used regularly and responsively by clarifying learning content, procedures, and goals for social skills and play. Obstacles to PT/ST reflected situational thresholds for simultaneous play between the target children and peers and organisational conditions that complicated applications of PT/ST. Implications for inclusive preschool practice and research are discussed.
The Impact of Free Trade Agreements on International Agricultural Trade: A Gravity Application on the Dairy Product Trade and the ASEAN-China-FTA
Creators: name: Schaak, Henning
name: Schaak, Henning
Publisher: name: Unknown
Year: 2015
Subjects: subject: International Relations/Trade
subject: Gravity Model
subject: Agricultural Trade
subject: ACFTA
subject: Trade creation and trade diversion effects
subject: Dairy products

description: This paper uses a gravity model to analyse the impact of the ASEAN-China-FTA on the international trade of dairy products. It uses a multinomial PML estimator with country fixed effects and a suitable framework to differentiate between trade creation and trade diversion effects in terms of imports and exports. The used dataset contains disaggregated data for 36 countries, including the ASEAN member countries, China and the 25 largest dairy exporting countries from 1995 until 2013. The dataset contains data on the three SITC dairy product groups as well as their aggregate. The estimates of the model include significant values for all framework effects. They indicate that there are trade creation, import diversion and export diversion effects for all four commodity groups. The estimated overall net trade effect is negative. Hence the current implementation of the FTA should be critically evaluated with respect to dairy products.
MOESM1 of Effectiveness of tocotrienol-rich fraction combined with tamoxifen in the management of women with early breast cancer: a pilot clinical trial
Creators: name: Kalanithi Nesaretnam
name: Kanga Selvaduray
name: Ghazali Abdul Razak
name: Veerasenan, Sheela
name: Gomez, Patricia
Publisher: name: figshare
Year: 2019
Subjects: Cancer
Science Policy

description: Authorsâ original file for figure 1
Disorder induced phase segregation in La2/3Ca1/3MnO3 manganites
Creators: name: Garcia-Hernandez, M.
name: Mellergard, A.
name: Mompean, F. J.
name: Sanchez, D.
name: de Andres, A.
name: McGreevy, R. L.
name: Martinez, J. L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Neutron powder diffraction experiments on La2/3Ca1/3MnO3 over a broad temperature range above and below the metal-insulator transition have been analyzed beyond the Rietveld average approach by use of Reverse Monte Carlo modelling. This approach allows the calculation of atomic pair distribution functions and spin correlation functions constrained to describe the observed Bragg and diffuse nuclear and magnetic scattering. The results evidence phase separation within a paramagnetic matrix into ferro and antiferromagnetic domains correlated to anistropic lattice distortions in the vicinity of the metal-insulator transition.
description: 3 pages, 4 figures. Submitted to Phys. Rev. Lett. Figure 1 replaced
Gravitational redshift/blueshift of light emitted by geodesic test particles, frame-dragging and pericentre-shift effects, in the Kerr-Newman-de Sitter and Kerr-Newman black hole geometries
Creators: name: Kraniotis, G. V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the redshift and blueshift of light emitted by timelike geodesic particles in orbits around a Kerr-Newman-(anti) de Sitter (KN(a)dS) black hole. Specifically we compute the redshift and blueshift of photons that are emitted by geodesic massive particles and travel along null geodesics towards a distant observer-located at a finite distance from the KN(a)dS black hole. For this purpose we use the Killing-vector formalism and the associated first integrals-constants of motion. We consider in detail stable timelike equatorial circular orbits of stars and express their corresponding redshift/blueshift in terms of the metric physical black hole parameters (angular momentum per unit mass, mass, electric charge and the cosmological constant) and the orbital radii of both the emitter star and the distant observer. These radii are linked through the constants of motion along the null geodesics followed by the photons since their emission until their detection and as a result we get closed form analytic expressions for the orbital radius of the observer in terms of the emitter radius, and the black hole parameters. In addition, we compute exact analytic expressions for the frame dragging of timelike spherical orbits in the KN(a)dS spacetime in terms of multivariable generalised hypergeometric functions of Lauricella and Appell. We solve the conditions for timelike spherical orbits in KN(a)dS and KN spacetimes. We present new, elegant compact forms for the parameters of these orbits. Last but not least we derive a very elegant and novel exact formula for the periapsis advance for a test particle in a non-spherical polar orbit in KNdS black hole spacetime in terms of Jacobi's elliptic function sn and Lauricella's hypergeometric function $F_D$.
description: version accepted for publication in: The European Physical Journal C
Is there a spectral turnover in the spin noise of millisecond pulsars?
Creators: name: Goncharov, Boris
name: Zhu, Xing-Jiang
name: Thrane, Eric
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Pulsar timing arrays provide a unique means to detect nanohertz gravitational waves through long-term measurements of pulse arrival times from an ensemble of millisecond pulsars. After years of observations, some timing array pulsars have been shown to be dominated by low-frequency red noise, including spin noise that might be associated with pulsar rotational irregularities. The power spectral density of pulsar timing red noise is usually modeled with a power law or a power law with a turnover frequency below which the noise power spectrum plateaus. If there is a turnover in the spin noise of millisecond pulsars, residing within the observation band of current and/or future pulsar timing measurements, it may be easier than projected to resolve the gravitational-wave background from supermassive binary black holes. Additionally, the spectral turnover can provide valuable insights on neutron star physics. In the recent study by Melatos and Link, the authors provided a derivation of the model for power spectral density of spin noise from superfluid turbulence in the core of a neutron star, from first principles. The model features a spectral turnover, which depends on the dynamical response time of the superfluid and the steady-state angular velocity lag between the crust and the core of the star. In this work, we search for a spectral turnover in spin noise using the first data release of the International Pulsar Timing Array. Through Bayesian model selection, we find no evidence of a spectral turnover. Our analysis also shows that data from pulsars J1939+2134, J1024$-$0719 and J1713+0747 prefers the power-law model to the superfluid turbulence model.
description: 10 pages, 4 figures
The Impacts of Governance on Agricultural Efficiency
Creators: name: Abolhassani, Leili
name: Eghbali, Fatemeh
name: Shahnoushi, Naser
name: Abolhassani, Leili
name: Eghbali, Fatemeh
name: Shahnoushi, Naser
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Agricultural Efficiency
subject: Governance
subject: Data Envelopment Analysis
subject: Panel Data Regression

description: The main goal of the study is to explain the interaction between governance and agricultural efficiency. The study used a Panel Data Regression Analysis to investigate the relationship between six governance indicators and agricultural efficiency. Agricultural efficiency was measured as the ratio of agricultural outputs to agricultural inputs by Data Envelopment Analysis (DEA). In this study, we combined DEA and a regression analysis. In the first stage, DEAmodel was used (outputoriented, constant return to scale model) to analyze the agricultural efficiency of countries. In the second stage, Panel Data Regression Analysis was used to find the effects of Worldwide Governance Indicators (WGI) and country type on country's efficiency. The results showed that governance indicators are not efficient on the agricultural efficiency.
of Effectiveness of tocotrienol-rich fraction combined with tamoxifen in the management of women with early breast cancer: a pilot clinical trial
Creators: name: Kalanithi Nesaretnam
name: Kanga Selvaduray
name: Ghazali Abdul Razak
name: Veerasenan, Sheela
name: Gomez, Patricia
Publisher: name: figshare
Year: 2019
Subjects: Cell Biology
Cancer
Science Policy

description: of Effectiveness of tocotrienol-rich fraction combined with tamoxifen in the management of women with early breast cancer: a pilot clinical trial
Octonionic Realizations of 1-dimensional Extended Supersymmetries. A Classification
Creators: name: Carrion, H. L.
name: Rojas, M.
name: Toppan, F.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The classification of the octonionic realizations of the one-dimensional extended supersymmetries is here furnished. These are non-associative realizations which, albeit inequivalent, are put in correspondence with a subclass of the already classified associative representations for 1D extended supersymmetries. Examples of dynamical systems invariant under octonionic realizations of the extended supersymmetries are given. We cite among the others the octonionic spinning particles, the N=8 KdV, etc. Possible applications to supersymmetric systems arising from dimensional reduction of the octonionic superstring and M-theory are mentioned.
description: 12 pages, LaTex
Adoption – Die Rolle der leiblichen Mutter in einem Adoptionsverfahren
Creators: name: Schröter, Sophie
Publisher: name: Hochschulbibliothek, Hochschule Merseburg
Year: 2021
Subjects: subject: Adoptionsverfahren
subject: Adoptionsforschung
subject: Rolle der leiblichen Mutter
subject: DDC::3** Sozialwissenschaften::30* Sozialwissenschaften, Soziologie::302 Soziale Interaktion

description: Es wird immer Mütter geben, die ihre Kinder zur Adoption freigeben. Trotz dieser Tatsache kommt den leiblichen Müttern in der Adoptionsforschung noch immer ein geringer Stellenwert zu. Der Fokus dieser wird stattdessen vermehrt auf das Adoptivkind oder die Adoptivfamilie gelegt. ... Aus diesem Grund verfolgt die vorliegende Arbeit das Ziel, ein Adoptionsverfahren aus Sicht der Mutter zu verdeutlichen. Der Fokus soll auf die zentrale Fragestellung „Welche Rolle trägt die leibliche Mutter in einem Adoptionsverfahren?“ gerichtet werden. Antworten auf diese werden mit Hilfe einer Literaturanalyse näher beleuchtet.
Protein induced morphological transitions in KCl crystal growth
Creators: name: Szabo, Balint
name: Vicsek, Tamas
Publisher: name: arXiv
Year: 2002
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We investigated the formation of KCl crystals on glass surface by phase contrast, fluorescent, and atomic force microscopy on the micrometer scale, and observed interesting morphological transitions as a function of the experimental conditions. The presence of proteins in the solution from which the salt crystals grow during the drying up leads to complex microscopic patterns of crystals some of which are analogous to those commonly observed on the macroscopic scale. We tested the effect of tubulin, FITC-labeled albumin and IgG on the morphology of crystals grown either slowly or fast. A rich variety of protein specific and concentration dependent morphologies was found and described by a morphological diagram. We give a phenomenological interpretation, which can explain the growth of complex patterns. Fluorescent images prove that a protein layer covers the surface of the KCl structures. We propose that this layer reduces the anisotropy of the effective surface tension during growth. The tip splitting fractal regime is attributed to the decrease of anisotropy. Other possible mechanisms, which can cause morphological transition, are also discussed. We found elongated saw-toothed crystals induced by proteins, especially IgG and identified their structure.
description: 11 pages. 7 figures
title: An investigation of instructional rounds and novice teacher self-efficacy: an evaluative case study
Creators: name: Meneghetti, Rachelle
Publisher: name: Memorial University of Newfoundland
publisherIdentifier: https://ror.org/04haebc03
publisherIdentifierScheme: ROR
Year: 2024

description: The purpose of this qualitative study, situated at an independent Vancouver school, was to investigate the use of instructional rounds as a collaborative professional learning tool in promoting novice teacher self-efficacy. The study utilized an evaluative case study approach to explore the experiences of four novice teachers as they engaged in several rounds of classroom observation, group debrief, and self-reflection. Data were collected using semi-structured interviews, document reviews, and research field notes. Findings from the research suggest that instructional rounds provide an effective vehicle for professional learning and for building educators’ self-efficacy beliefs. Participants attributed heightened impressions of self-efficacy to several elements of the instructional rounds process, including (1) creating a shared vision and goals, (2) engaging in non-evaluative classroom observations, (3) collaborating in a safe and supportive learning environment, and (4) critically reflecting on their own teaching practices. The study provides useful insight for administrators and policy makers as they plan high-quality professional learning aimed toward continuous school improvement. It also underscores the complexity of implementing robust professional learning initiatives that are designed to foster greater teacher professionalism. Suggestions are made to help schools renew their focus on professionalism and teacher self-efficacy, which may help retain a growing number of early career teachers who choose to leave the profession. Recommendations are also made for further research.
Chandra Observations of High Mass Young Stellar Objects in the Monoceros R2 molecular cloud
Creators: name: Kohno, M.
name: Koyama, K.
name: Hamaguchi, K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed the Monoceros R2 molecular cloud with the ACIS-I array onboard the Chandra X-ray Observatory. From the central 3.2' x 3.2' region, we detect 154 sources above the detection limit of ~5x10^-16 ergs s^-1 cm^-2 with a 100 ks-exposure. About 85% of the X-ray sources are identified with an infrared counterpart, including four high mass stars in zero age main sequence (ZAMS) and/or pre main sequence (PMS) phase. The X-ray spectra of the high mass ZAMS and PMS stars are represented with a thin thermal plasma model of a temperature above 2 keV. The X-rays are time-variable and exhibit rapid flares. These high temperature plasma and flaring activity are similar to those seen in low mass PMS stars and contrary to the behavior observed in high mass main sequence stars. The X-ray luminosity increases as the intrinsic K-band flux increases. However, the X-ray luminosity saturates at a level of ~10^31 ergs s^-1. We conclude that high mass ZAMS and PMS emit X-rays, possibly due to the magnetic activity like those of low mass stars.
description: 12 pages, 10 figures, accepted for publication in ApJ
The fourth moment of individual Dirichlet L-functions on the critical line
Creators: name: Topacogullari, Berke
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M06

description: We prove an asymptotic formula for the second moment of a product of two Dirichlet L-functions on the critical line, which has a power saving in the error term and which is uniform with respect to the involved Dirichlet characters. As special cases we give uniform asymptotic formulae for the fourth moment of individual Dirichlet L-functions and for the second moment of Dedekind zeta functions of quadratic number fields on the critical line.
description: 35 pages
A Common Parametrization for Finite Mode Gaussian States, their Symmetries and associated Contractions with some Applications
Creators: name: John, Tiju Cherian
name: Parthasarathy, K. R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81P40, 81R30, 81S05, 46L53

description: Let $Γ(\mathcal{H})$ be the boson Fock space over a finite dimensional Hilbert space $\mathcal{H}$. It is shown that every gaussian symmetry admits a Klauder-Bargmann integral representation in terms of coherent states. Furthermore, gaussian symmetries, gaussian states and second quantization contractions, all of these operators belong to a weakly closed, selfadjoint semigroup $\mathcal{E}_2(\mathcal{H})$ of bounded operators in $Γ(\mathcal{H})$. This yields, a new parametrization of gaussian states, which is a very fruitful alternative to the customary parametrization by position-momentum mean vectors and covariance matrices. This leads to a rich harvest of corollaries: (i) every gaussian state $ρ$ admits a factorization $ρ= Z_{1}^{\dagger}Z_{1}$, where $Z_{1}$ is an element of $\mathcal{E}_2(\mathcal{H})$ and has the form $Z_{1} = \sqrt{c}Γ(\sqrtΛ)\exp{\sum_{r=1}^{n} λ_ra_r+\sum_{r,s=1}^{n} α_{rs}a_{r}a_{s}}$ on the dense linear manifold generated by all exponential vectors, $Λ$ being a positive operator in $\mathcal{H}$, $a_{r}, 1\leq r \leq n$ are the annihilation operators corresponding to the $n$ different modes in $Γ(\mathcal{H})$, $λ_r\in \mathbb{C}$ and $[α_{rs}]$ is a symmetric matrix in $M_n(\mathbb{C})$; (ii) an explicit particle basis expansion of an arbitrary mean zero pure gaussian state vector along with a density matrix formula for a general gaussian state in terms of its $\mathcal{E}_2(\mathcal{H})$-parameters; (iii) an easy test for the entanglement of pure gaussian states and a class of examples of pure $n$-mode gaussian states which are completely entangled; (iv) tomography of an unknown gaussian state in $Γ(\mathbb{C}^n)$ by the estimation of its $\mathcal{E}_2(\mathbb{C}^n)$-parameters using $O(n^2)$ measurements with a finite number of outcomes.
description: This version is closer to the published version
APPLICATION OF HIGH FIDELITY PCR IN THE PLANT DISEASE DIAGNOSTIC LAB
Creators: name: Palmateer, A.J.
name: Lopez, P.
name: Estevez De Jensen, C.
name: Palmateer, A.J.
name: Lopez, P.
name: Estevez De Jensen, C.
Publisher: name: Unknown
Year: 2012
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: molecular diagnostic techniques
subject: PCR
subject: Hi-Fidelity PCR
subject: pathogen detection

description: To compare the sensitivity of High-Fidelity (Hi-Fi) and standard PCR in detecting plant pathogens in symptomatic host plant tissue, four DNA extraction methods were tested in conjunction with a standard and two Hi-Fi PCR protocols. The DNA extraction methods were: 1) Extract-N-Amp Plant Kit (Sigma-Aldrich); 2) DNeasy Plant Mini Kit (Qiagen), 3) CTAB buffer, and 4) lithium chloride Shorty buffer. Symptomatic tissues (i.e. leaf, petiole and root tissue) from selected diagnostic samples were submitted to each extraction method. DNA samples were then used for each PCR protocol applying species-specific primers: 1) Standard PCR; 2) Hi-Fi PCR using LongAmp enzyme; and 3) Hi-Fi PCR Taq+Accuzyme. DNA quantification using spectrophotometry indicated Extract-N-Amp and Shorty methods yielded the highest DNA amounts with lower purity. Both Hi-Fi PCR protocols were more sensitive than standard PCR. The Accuzyme protocol detected targeted plant pathogens in all samples using the DNeasy and Extractn- Amp methods, whereas the standard protocol detected the pathogen only in leaf samples by using the DNeasy kit. This study demonstrates that Hi-Fi PCR provides a highly sensitive tool for molecular diagnostics in planta, and that the DNA extraction method influences PCR sensitivity.
Erfolgsfaktoren der Post Merger Integration bei M&A-Transaktionen : Analyse der Übernahme der Dresdner Bank AG durch die Commerzbank AG
Creators: name: Judenhagen, Jopp
Publisher: name: Hochschulbibliothek, Hochschule Merseburg
Year: 2022
Subjects: subject: Transaktionen
subject: Mergers & Acquisitions
subject: Wachstumsstrategie
subject: Post Merger Integration
subject: DDC::3** Sozialwissenschaften::33* Wirtschaft::332 Finanzwirtschaft

description: Die Post Merger Integration (PMI) ist das Forschungsobjekt dieser Arbeit. Wie auch je-des M&A-Geschäft seine eigenen Herausforderungen mit sich bringt, gibt es auch bei der PMI keinen dogmatischen Prozess. Keine Integration gleicht der Letzten oder Nächs-ten und es muss sich immer an den spezifischen Zielen und Ausgangssituationen orien-tiert werden. Dennoch gibt es Strukturen und Abläufe, die in einer erfolgversprechenden PMI nicht fehlen dürfen. Im Zentrum der vorliegenden Arbeit steht die Beantwortung der Forschungsfrage: Was sind die Faktoren einer erfolgreichen Post Merger Integration im Anschluss an einen M&A-Deal?
Riemannian Gauge Theory and Charge Quantization
Creators: name: Serna, Mario
name: Cahill, Kevin
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In a traditional gauge theory, the matter fields ϕ^a and the gauge fields A^c_μare fundamental objects of the theory. The traditional gauge field is similar to the connection coefficient in the Riemannian geometry covariant derivative, and the field-strength tensor is similar to the curvature tensor. In contrast, the connection in Riemannian geometry is derived from the metric or an embedding space. Guided by the physical principal of increasing symmetry among the four forces, we propose a different construction. Instead of defining the transformation properties of a fundamental gauge field, we derive the gauge theory from an embedding of a gauge fiber F=R^n or F=C^n into a trivial, embedding vector bundle F=R^N or F=C^N where N>n. Our new action is symmetric between the gauge theory and the Riemannian geometry. By expressing gauge-covariant fields in terms of the orthonormal gauge basis vectors, we recover a traditional, SO(n) or U(n) gauge theory. In contrast, the new theory has all matter fields on a particular fiber couple with the same coupling constant. Even the matter fields on a C^1 fiber, which have a U(1) symmetry group, couple with the same charge of +/- q. The physical origin of this unique coupling constant is a generalization of the general relativity equivalence principle. Because our action is independent of the choice of basis, its natural invariance group is GL(n,R) or GL(n,C). Last, the new action also requires a small correction to the general-relativity action proportional to the square of the curvature tensor.
description: Improved the explanations, added references, added 3 figures and an appendix, corrected a sign error in the old figure 4 (now figure 5). Now 33 pages, 7 figures and 2 tables. E-mail Serna for annimations
Second-order topological corner states with ultracold atoms carrying orbital angular momentum in optical lattices
Creators: name: Pelegrí, G.
name: Marques, A. M.
name: Ahufinger, V.
name: Mompart, J.
name: Dias, R. G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose a realization of a two-dimensional higher-order topological insulator with ultracold atoms loaded into orbital angular momentum (OAM) states of an optical lattice. The symmetries of the OAM states induce relative phases in the tunneling amplitudes that allow to describe the system in terms of two decoupled lattice models. Each of these models displays one-dimensional edge states and zero-dimensional corner states that are correlated with the topological properties of the bulk. We show that the topologically non-trivial regime can be explored in a wide range of experimentally feasible values of the parameters of the physical system. Furthermore, we propose an alternative way to characterize the second-order topological corner states based on the computation of the Zak's phases of the bands of first-order edge states.
Graded manifolds and Drinfeld doubles for Lie bialgebroids
Creators: name: Voronov, Theodore
Publisher: name: arXiv
Year: 2001
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53D17, 58A50, 17B62, 17B63

description: We define \textit{graded manifolds} as a version of supermanifolds endowed with an additional $\mathbb Z$-grading in the structure sheaf, called \textit{weight} (not linked with parity). Examples are ordinary supermanifolds, vector bundles over supermanifolds, double vector bundles, iterated constructions like $TTM$, etc. I give a construction of \textit{doubles} for \textit{graded} $QS$- and \textit{graded $QP$-manifolds} (graded manifolds endowed with a homological vector field and a Schouten/Poisson bracket). Relation is explained with Drinfeld's Lie bialgebras and their doubles. Graded $QS$-manifolds can be considered, roughly, as ``generalized Lie bialgebroids''. The double for them is closely related with the analog of Drinfeld's double for Lie bialgebroids recently suggested by Roytenberg. Lie bialgebroids as a generalization of Lie bialgebras, over some base manifold, were defined by Mackenzie and P. Xu. Graded $QP$-manifolds give an {odd version} for all this, in particular, they contain ``odd analogs'' for Lie bialgebras, Manin triples, and Drinfeld's double.
description: LaTeX2e, 38 pages. Latest update (November 2002): text reworked, certain things added; this is the final version as published
Untersuchung zur Sorption von Kohlendioxid in neuartigen porösen Materialien
Creators: name: Arifian, Yosef Benedikt Awan
Publisher: name: Hochschulbibliothek, Hochschule Merseburg
Year: 2020
Subjects: subject: Adsorptionsprozesse
subject: poröse Adsorbentien
subject: CO2-Sorption
subject: DDC::500 Naturwissenschaften und Mathematik::540 Chemie

description: Die Hauptaufgabe dieser Arbeit besteht darin, neuartige poröse Adsorbentien im Hinblick auf ihre sorptiven Eigenschaften gegenüber CO2 bei Adsorptionsprozessen zu charakterisieren. Neben der Untersuchung der CO2-Sorption soll am Ende dieser Arbeit die Selektivität des Adsorbens für die Sorption von CO2 aus einem CH4-reichen Gasstrom bewertet werden.
L?organizzazione degli uffici di Giudice di pace nell?autonomia speciale del Trentino-Alto Adige/S�dtirol. Prospettive dalla legge di delega per la riforma della magistratura onoraria e normativa di attuazione in materia di giustizia
Creators: name: Guella, Flavio
Publisher: name: Universit� di Trento
Year: 2017

description: :unkn
On ab initio-based, free and closed-form expressions for gravitational waves
Creators: name: Tiglio, Manuel
name: Villanueva, Aarón
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We introduce a new approach for finding high accuracy, free and closed-form expressions for the gravitational waves emitted by binary black hole collisions from ab initio models. More precisely, our expressions are built from numerical surrogate models based on supercomputer simulations of the Einstein equations, which have been shown to be essentially indistinguishable from each other. Distinct aspects of our approach are that: i) representations of the gravitational waves can be explicitly written in a few lines, ii) these representations are free-form yet still fast to search for and validate and iii) there are no underlying physical approximations in the underlying model. The key strategy is combining techniques from Artificial Intelligence and Reduced Order Modeling for parameterized systems. Namely, symbolic regression through genetic programming combined with sparse representations in parameter space and the time domain using Reduced Basis and the Empirical Interpolation Method enabling fast free-form symbolic searches and large-scale a posteriori validations. As a proof of concept we present our results for the collision of two black holes, initially without spin, and with an initial separation corresponding to $25-31$ gravitational wave cycles before merger. The minimum overlap, compared to ground truth solutions, is $99\%$. That is, $1\%$ difference between our closed-form expressions and supercomputer simulations; this is considered for gravitational (GW) science more than the minimum required due to experimental numerical errors which otherwise dominate. This paper aims to contribute to the field of GWs in particular and Artificial Intelligence in general.
description: 12 pages, 6 figures. Adding code for GWs and fix minor typos based on journal reports. Accepted in Nature Scientific Reports
Electron Spins in Artificial Atoms and Molecules for Quantum Computing
Creators: name: Golovach, Vitaly N.
name: Loss, Daniel
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Achieving control over the electron spin in quantum dots (artificial atoms) or real atoms promises access to new technologies in conventional and in quantum information processing. Here we review our proposal for quantum computing with spins of electrons confined to quantum dots. We discuss the basic requirements for implementing spin-qubits, and describe a complete set of quantum gates for single- and two-qubit operations. We show how a quantum dot attached to leads can be used for spin filtering and spin read-out, and as a spin-memory device. Finally, we focus on the experimental characterization of the quantum dot systems, and discuss transport properties of a double-dot and show how Kondo correlations can be used to measure the Heisenberg exchange interaction between the spins of two dots.
description: 13 pages, 8 figures, Invited Review (Semiconductor Spintronics, Special Issue of SST)
MOESM1 of Effect of chemotherapy on cancer stem cells and tumor-associated macrophages in a prospective study of preoperative chemotherapy in soft tissue sarcoma
Creators: name: Skubitz, Keith
name: Wilson, Jon
name: Cheng, Edward
name: Lindgren, Bruce
name: Boylan, Kristin
name: Skubitz, Amy
Publisher: name: figshare
Year: 2019
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy

description: Additional file 1: Table S1. Patient and disease characteristics.