cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Spectral Geometry and Causality
Creators: name: Kopf, Tomas
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For a physical interpretation of a theory of quantum gravity, it is necessary to recover classical spacetime, at least approximately. However, quantum gravity may eventually provide classical spacetimes by giving spectral data similar to those appearing in noncommutative geometry, rather than by giving directly a spacetime manifold. It is shown that a globally hyperbolic Lorentzian manifold can be given by spectral data. A new phenomenon in the context of spectral geometry is observed: causal relationships. The employment of the causal relationships of spectral data is shown to lead to a highly efficient description of Lorentzian manifolds, indicating the possible usefulness of this approach. Connections to free quantum field theory are discussed for both motivation and physical interpretation. It is conjectured that the necessary spectral data can be generically obtained from an effective field theory having the fundamental structures of generalized quantum mechanics: a decoherence functional and a choice of histories.
description: AMS-Latex, 14 pages, 3 figures, using epsf macro
Multi-Source Transfer Learning for Non-Stationary Environments
Creators: name: Du, Honghui
name: Minku, Leandro L.
name: Zhou, Huiyu
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In data stream mining, predictive models typically suffer drops in predictive performance due to concept drift. As enough data representing the new concept must be collected for the new concept to be well learnt, the predictive performance of existing models usually takes some time to recover from concept drift. To speed up recovery from concept drift and improve predictive performance in data stream mining, this work proposes a novel approach called Multi-sourcE onLine TrAnsfer learning for Non-statIonary Environments (Melanie). Melanie is the first approach able to transfer knowledge between multiple data streaming sources in non-stationary environments. It creates several sub-classifiers to learn different aspects from different source and target concepts over time. The sub-classifiers that match the current target concept well are identified, and used to compose an ensemble for predicting examples from the target concept. We evaluate Melanie on several synthetic data streams containing different types of concept drift and on real world data streams. The results indicate that Melanie can deal with a variety drifts and improve predictive performance over existing data stream learning algorithms by making use of multiple sources.
Η διδασκαλία της γλώσσας στην ύστερη νεωτερικότητα: Αναζητώντας τους όρους μιας επιστημολογικής προσέγγισης
Creators: name: Τεντολούρης, Φίλιππος
name: Χατζησαββίδης, Σωφρόνης
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: γλωσσοδιδακτική; επικοινωνιακό-λειτουργικό παράδειγμα; επιστημολογία; θεωρία παραδειγμάτων; ύστερη νεωτερικότητα

description: In our presentation we investigate the epistemological conditions of the development of grammar-translation, structural and communicative language teaching methods. First, we argue that a social epistemological perspective can contribute to this investigation. Secondly, we identify the basic cultural and social features of late modernity and present how these features are related to communicative language teaching methods. Finally, using Thomas Kuhn’s (1970) paradigm theory we construct an epistemological perspective which can show the epistemological conditions of language teaching in general.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
Polarization fraction measurement in same-sign WW scattering using deep learning
Creators: name: Lee, Junho
name: Chanon, Nicolas
name: Levin, Andrew
name: Li, Jing
name: Lu, Meng
name: Li, Qiang
name: Mao, Yajun
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Studying the longitudinally polarized fraction of $W^\pm W^\pm$ scattering at the LHC is crucial to examine the unitarization mechanism of the vector boson scattering amplitude through Higgs and possible new physics. We apply here for the first time a Deep Neural Network classification to extract the longitudinal fraction. Based on fast simulation implemented with the Delphes framework, significant improvement from a deep neural network is found to be achievable and robust over all dijet mass region. A conservative estimation shows that a high significance of four standard deviations can be reached with the High-Luminosity LHC designed luminosity of 3000 $fb^{-1}$
description: 4 pages, 5 figures, updated draft to match published version
title: Interactions of social and ecological systems in Europe's marine management: Interpretations and implementation of the ecosystem approach to management in scientific advice
Creators: name: Gilek, Michael
name: Linke, Sebastian
name: Udovyk, Oksana
name: Karlsson, Mikael
Publisher: name: ASC 2011 - Theme session R
Year: 2024
Subjects: Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.The governance of a marine ecosystem such as the Baltic Sea can be regarded as a relationship between two systems: a ”governing system” and a ”system‐to‐be‐governed”. Both are diverse, complex, dynamic, and vulnerable. We argue that science–policy interfaces constitute a key sphere of interaction between the two systems through, for example, scientific advice and politically negotiated management decisions. However, it is not fully clear if and how science–policy interfaces have evolved differently in response to various environmental risks in the Baltic Sea. Nor is it clear how emerging management objectives linked to ecosystem‐based, precautionary and participatory approaches influence these science–policy interfaces. Our paper investigates different science–policy relationships with regard to the risks of overfishing, eutrophication, hazardous chemicals, oil discharges, and invasive species in the Baltic Sea. Three major aspects of sciencepolicy interactions are analysed: (i) organizational structures of risk assessment activities, (ii) coping with scientific uncertainties and disagreements, and (iii) adaptations to emerging management objectives such as those linked to the concept of ”good governance” and the ecosystem approach to management. Our results expose problems and conceptual inconsistencies of science–policy interfaces in all of the studied risk cases. We show that the commonly expressed division between assessments and management cannot be maintained and that close interactions between the scientific advisory systems and policy‐making agendas result in unforeseen problems for adhering to the modes of ”good governance”, such as stakeholder participation and inclusion of non‐scientific knowledge into policy.
Orange trees intercropped with legumes
Creators: name: Pantera, Anastasia
Publisher: name: Zenodo
Year: 2017
Subjects: Intercropped orchards
Orange orchards
Chickpeas

description: Market-focused farmers manage orange tree (Citrus sinensis) varieties by pollarding and crafting. This procedure can take up to 15 years for the tree to reach maturity and attain maximum fruit yields. In the meantime, farmers can take advantage of the wide and open space created by the pollarding, to produce a variety of vegetables and raise a further income to supplement that earned from the orange trees.

Chickpeas (Cicerarietinum L.) are valued as a high quality food for humans. They are also an excellent source of protein for animal feed. They are easy to cultivate, requiring little management and, in general, have low treatment costs. They have high monetary value, so a farmer can gain considerable additional income fromcultivating chickpeas among trees.

One of the important characteristics of chickpeas is their low water demand. This makes them ideal for intercropping with trees of similar water economy in Mediterranean and other dry ecosystems. Another important feature of chickpeas is the nitrogen they provide to the soil by the symbiotic relationship of their roots with nitrogen fixing bacteria. This benefits the farmer by reducing the need for expenditure on nitrogen fertilizers, which also protects the soil and water from nitrogen contamination.
Quantum Bubble Nucleation beyond WKB: Resummation of Vacuum Bubble Diagrams
Creators: name: Suzuki, Hiroshi
name: Yasuta, Hirofumi
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: On the basis of Borel resummation, we propose a systematical improvement of bounce calculus of quantum bubble nucleation rate. We study a metastable super-renormalizable field theory, $D$ dimensional O(N) symmetric $ϕ^4$ model ($D<4$) with an attractive interaction. The validity of our proposal is tested in D=1 (quantum mechanics) by using the perturbation series of ground state energy to high orders. We also present a result in D=2, based on an explicit calculation of vacuum bubble diagrams to five loop orders.
description: 19 pages, 5 figures, PHYZZX
A fresh look at ALP searches in fixed target experiments
Creators: name: Harland-Lang, Lucian
name: Jaeckel, Joerg
name: Spannowsky, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A significant number of high power proton beams are available or will go online in the near future. This provides exciting opportunities for new fixed target experiments and the search for new physics in particular. In this note we will survey these beams and consider their potential to discover new physics in the form of axion-like particles, identifying promising locations and set ups. To achieve this, we present a significantly improved calculation of the production of axion-like particles in the coherent scattering of protons on nuclei, valid for lower ALP masses and/or beam energies. We also provide a new publicly available tool for this process: the Alpaca Monte Carlo generator. This will impact ongoing and planned searches based on this process.
description: 19 pages, 6 figures. v2 corrected Eqs. (13),(18) and updated figures accordingly
Single-atom heat engine as a sensitive thermal probe
Creators: name: Levy, Amikam
name: Göb, Moritz
name: Deng, Bo
name: Singer, Kilian
name: Torrontegui, Erik
name: Wang, Daqing
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: quantum thermodynamics
subject: quantum heat engine
subject: trapped ions
subject: 530
subject: Quantenthermodynamik
subject: Wärmekraftmaschine
subject: Ionenfalle

description: Gefördert durch den Publikationsfonds der Universität Kassel
Nonlinear dynamic susceptibilities of interacting and noninteracting nanoparticle systems
Creators: name: Jönsson, P.
name: Jonsson, T.
name: García-Palacios, J. L.
name: Svedlindh, P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The linear and cubic dynamic susceptibilities of solid dispersions of nano-sized maghemite particles have been measured for three samples with a volume concentration of magnetic particles ranging from 0.3 % to 17 %, in order to study the effect of dipole-dipole interactions. Significant differences between the dynamic response of the three samples are observed. The dynamic susceptibilities of the most dilute sample compare reasonably well with an existing theory for the linear and cubic dynamic susceptibilities of an assembly of noninteracting, uniaxial magnetic particles. The nonlinear dynamic response of the most concentrated sample exhibits at low temperatures some of the features observed in a Ag(11 at.% Mn) spin glass.
description: 19 pages, 5 figures
ИССЛЕДОВАНИЕ ПОТРЕБИТЕЛЬСКИХ И АНТИОКСИДАНТНЫХ СВОЙСТВ СОРТОВ КРЫЖОВНИКА РАЙОНИРОВАННЫХ В СВЕРДЛОВСКОЙ ОБЛАСТИ
Creators: name: Вяткин А.В.
name: Евтушенко Н.С.
Publisher: name: Zenodo
Year: 2024

description: В статье дана характеристика районированных сортов крыжовника Свердловской области, представлены новые данные о кислотности и содержанию в ягодах общих и редуцирующих сахаров, веществ-антиоксидантов, таких как антоцианы, флавоноиды и фенольные соединения, доказывающие пригодность крыжовника для дальнейшей селекции и переработке с целью получения продуктов питания функциональной направленности.
The Mind-Body Connection: How Communication Skills Impact Your Physical and Mental Wellbeing
Creators: name: Oliveira D., M. Jorge
Publisher: name: Empowerverse Media & Communication Agency
Year: 2024
Subjects: communication skills
mind-body connection
mental health

description: Effective communication is often seen as a professional skill or a social nicety. However, recent research reveals a deeper truth: communication skills have a profound impact on our physical and mental well-being. This article explores the science behind the mind-body connection, highlighting how strong communication skills can positively influence our overall health and happiness.
Foreign language anxiety and fear of negative evaluation in the Greek university classroom
Creators: name: Tzoannopoulou, Marina
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: affect; language anxiety; fear of negative evaluation; second/foreign language learning; tertiary education

description: This study aims to investigate the major reported sources provoking language anxiety and fear of negative evaluation in a group of Greek university students. Language performance was taken into consideration in the analysis of the data. The data were submitted to factor analysis and the results indicated that the main stressors include communication apprehension felt toward teachers, peers and native speakers, fear of tests and of speaking in class and also teachers’ questions and corrections. The findings also pointed to a negative correlation among language anxiety, fear of negative evaluation and language performance. Additionally, the results revealed a significant effect for language anxiety and fear of negative evaluation attributable to gender.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
A comparative analysis of Greek vs. English: Can it be argued that teenagers can argue?
Creators: name: Xargia, Maria
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: foreign language writing; argumentative writing; argument analysis; contrastive analysis

description: The present study examined 72 Greek teenagers’ use of the rhetorical features of argument construction in Greek and English using Toulmin’s (2003) scheme of argument analysis. A questionnaire, the Quick Placement Test (UCLES 2001), an essay in English and an essay in Greek were employed as research instruments. A learner corpus of English essays and a corpus of Greek essays were compiled and examined qualitatively and quantitatively. The findings revealed that students formed better arguments in English and that L2 proficiency affected argument construction in both Greek and English indicating a possible transferability of argument skills from English to Greek.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
Serendipitous X-ray Sources in the Chandra HRC Field around Alpha Centauri
Creators: name: Ayres, Thomas R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: For more than a decade, Alpha Centauri AB (G2V+K1V) has been observed by Chandra, in a long-term program to follow coronal (T~1MK) activity cycles of the two sunlike stars. Over 2008.4-2017.8, nineteen HRC-I exposures were taken, each about 10 ks in duration, and spaced about six months apart. Beyond monitoring the AB X-ray luminosities, the HRC-I sequence represents a unique decadal record of the dozen, or so, serendipitous X-ray sources in the Alpha Cen field, which is at low Galactic latitude and thus dominated by nearby stars. For the present study, the ten brightest candidates were considered. Only a handful of these were persistent; most were variable, some highly so, flaring in a few epochs, weak or absent in the others. All ten X-ray sources have Gaia objects within about 2 arcseconds; mostly late-type dwarfs, but a few giants. However, two of the proposed optical counterparts have statistically significant offsets, and possible conflicts between the X-ray and optical properties. Another of the candidates brightened a factor of 100 in X-rays during a single exposure, briefly attaining super-flare status. The Gaia counterpart is anomalously blue for its absolute G-magnitude, and likely is a WD+dM pair. To the extent that the low Galactic latitude field is representative, the Chandra time-domain view emphasizes that the high-energy stellar sky is biased toward transient sources, so any snapshot survey surely will miss many of the most interesting objects.
description: to be published in AJ
A Search for Fluctuation-Dissipation Theorem Violations in Spin-Glasses from Susceptibility Data
Creators: name: Cugliandolo, Leticia F.
name: Grempel, Daniel R.
name: Kurchan, Jorge
name: Vincent, Eric
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose an indirect way of studying the fluctuation-dissipation relation in spin-glasses that only uses available susceptibility data. It is based on a dynamic extension of the Parisi-Toulouse approximation and a Curie-Weiss treatment of the average magnetic couplings. We present the results of the analysis of several sets of experimental data obtained from various samples.
description: 7 pages, 4 figures
Αναζητώντας κριτήρια αξιολόγησης του προφορικού λόγου με βάση το νέο Πρόγραμμα Σπουδών για τη Νεοελληνική Γλώσσα του Γυμνασίου
Creators: name: Ζάγκα, Ελευθερία
name: Ηλιοπούλου, Κωνσταντίνα
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: Αξιολόγηση προφορικού λόγου; κριτήρια αξιολόγησης; μεταγνωστική επίγνωση; Δευτεροβάθμια Εκπαίδευση

description: This paper reports a study concerning the design and development of listening criteria in the context of classroom assessment in the Greek secondary education. Though the formative assessment of listening skills along with other skills have been formally provisioned under the new curricula, in the absence of specific criteria this paper aims at designing certain criteria for assessing listening. First it delves deeper into the procedure of designing criteria in general along with specific principals concerning listening assessment. Next results indicate that the students who filled the listening task perceived problem solving listening strategies as well as metacognitive awareness. Finally, findings are discussed in light of listening strategy knowledge as well as the theoretical and practical implications.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
title: Baltic herring and Anisakis simplex larvae: acetylcholinesterase biomarker response and host-parasite interactions in polluted environment
Creators: name: Podolska, M.
name: Nadolna, K.
name: Szostakowska, B.
name: Was, A.
name: Gosz, E.
Publisher: name: ASC 2011 - Theme session R
Year: 2024
Subjects: Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.Acetylcholinesterase (AChE) is widely used as a biomarker of exposure to neurotoxic compounds in aquatic environments. The best known function of AChE is to terminate the transmission of neural impulses by the rapid hydrolysis of acetylcholine into the inactive products of choline and acetic acid. The role of AChE in many parasite species differs from that in free‐living organisms and may be important in host–parasite interactions. The activity of this enzyme in parasites (Anisakis simplex larvae) and their hosts (herring, Clupea harengus) was inversely related. The most divergence was observed between the AChE activity in parasites (highest level) and male hosts (lowest level) from the Gulf of Gdańsk, a polluted area of the Baltic. The results of experimental exposure of A. simplex to carbofuran indicate that larvae have a high threshold of sensitivity to this carbamate pesticide. Moreover, AChE activity was significantly higher in larvae exposed to carbofuran concentration of 500 μg l–1, when compared with control samples. This may suggest the phenomenon of AChE overproduction, a protective mechanism against enzyme inhibitors previously described in insects. Many parasitic nematodes synthesize AChE in secretory glands and release enzyme into their external environment. The presence of AChE was detected using a native polyacrylamide gel electrophoresis not only in somatic extracts, but also in excretorysecretory products of A. simplex larvae. A secreted form of AChE obtained from larvae was characterized by a high level of activity, especially in nematodes from male hosts.
Coisotropic Triples, Reduction and Classical Limit
Creators: name: Dippell, Marvin
name: Esposito, Chiara
name: Waldmann, Stefan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: Coisotropic reduction from Poisson geometry and deformation quantization is cast into a general and unifying algebraic framework: we introduce the notion of coisotropic triples of algebras for which a reduction can be defined. This allows to construct also a notion of bimodules for such triples leading to bicategories of bimodules for which we have a reduction functor as well. Morita equivalence of coisotropic triples of algebras is defined as isomorphism in the ambient bicategory and characterized explicitly. Finally, we investigate the classical limit of coisotropic triples of algebras and their bimodules and show that classical limit commutes with reduction in the bicategory sense.
description: 34 pages, comments are welcome! Minor update with additional references
Olive trees intercropped with cereals and legumes
Creators: name: Mantzanas, Konstantinos
Publisher: name: Zenodo
Year: 2017
Subjects: Olive orchards
Intercropped orchards

description: Olive (Olea europea) is the most widespread cultivated tree in Greece. Olive trees alone, or in orchards, are found in all parts of the country that have a mild Mediterranean climate. The olive tree is considered to be one of the least demanding cultivated trees in terms of soil nutrients. For this reason, it is planted in poor, rocky areas with soils mostly derived from hard limestone. In traditional systems, practically all olive trees came from wild plants which were grafted. Edible olives and olive oil are the main products of olive trees, while secondary products include fodder for animals and firewood.
title: The usefulness of information on infection of herring with A. simplex larvae in management of Baltic herring stock
Creators: name: Horbowy, J.
name: Podolska, M.
Publisher: name: ASC 2011 - Theme session R
Year: 2024
Subjects: Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.Samples of herring from Polish waters (western, middle, and eastern coast) and German waters (Rügen and Mecklenburg area) were collected during the spawning seasons in 2004–2005. Classical and landmark‐based geometric morphometrics were performed to quantify the body shape of herring. Discriminant analysis was applied to assign individuals to a particular stock of western or central Baltic herring. The presence of A. simplex larvae was used as a marker for herring feeding migration outside the Baltic. Infected herring represented both western and central Baltic stocks. The share of both stocks in western and central Baltic was determined, giving the approximate migration rate of herring. Next, the age‐structured model including migration was developed to test for the effects of ignoring migration in the present assessment and management of both herring stocks. The model was fitted for a range of assumed migration rates (0.1–0.4 for western and 0–0.1 for central stock). In the model, part of the western stock migrates to central waters in the first half of the year while a part of the central stock migrates to the western area in the second half of the year. Surviving immigrants return back to both stocks at the end of the half‐year periods. Assuming migration results in estimates of spawning‐stock biomass for the western stock higher and for the central stock lower than in the model ignoring migrations. The effect of migration on catches and biomasses ranged from low (<5% change) to moderate (20% change) compared with projections neglecting migrations.
An intonational comparison of Yes/No Questions between the dialect of Evia and Standard Greek
Creators: name: Panussi, Katerina
Publisher: name: Selected papers on theoretical and applied linguistics
Year: 2016
Subjects: intonation, Yes/No questions, dialect, phonological realization, phonetic realization

description: This paper presents an Autosegmental analysis of the intonational contour of Yes/No Questions in Evia Greek (EG) and compares it to that of Standard Modern Greek (SMG). It is shown that the two dialects can express Y/N questions differently: where SMG has a rise-fall at the end of the question, EG can have either a similar contour to SMG or a rise as a boundary tone. In our analysis, we followed the auto-segmental metrical theory and in particular GRToBI (Arvaniti & Baltazani 2005). We collected sound data from 4 native speakers of EG via 4 different production experiments, manipulating the position of the last stressed syllable (final syllable, penult, and antepenult). Therefore, we controlled the realisation of tonal targets under tonal crowding conditions. We also measured the scaling and the alignment of nuclear accents and phrase-edge tones. A different phonetic realization has frequency of occurrence of 71% in the dialectal variety, that is described with low nuclear accent (L*), a bitonal phrase tone (LH-) and a H(igh) edge tone (H%), which sound similar to the Elliptical Questions in SMG or continuation rise, but do not have the same function.
description: Selected papers on theoretical and applied linguistics, Vol 21 (2016): Selected Papers on Theoretical and Applied Linguistics from ISTAL, Thessaloniki 5-7 April 2013
ТЕХНОЛОГИЧЕСКИЙ ПРОЦЕСС ПОЛУЧЕНИЯ ПРОДУКТОВ ПРОКАТНОГО ПРОИЗВОДСТВА
Creators: name: З.Л.Алимбабаева Филиал РГУ нефти и газа (НИУ) имени И.М.Губкина в г.  Ташкенте. Ташкент, Узбекистан
Publisher: name: Zenodo
Year: 2024

description: Форма поперечного сечения называется профилем проката. Совокупность профилей различной формы и размеров - сортамент. В зависимости от профиля прокат делится на четыре основные группы: листовой, сортовой, трубный и специальный. В зависимости от того нагретая или холодная заготовка поступает в прокатные валки – горячий и холодный.
Theory for Decoupling in High-T_c Superconductors from an Analysis of the Layered XY Model with Frustration
Creators: name: Rodriguez, J. P.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The nature of decoupling in the mixed phase of extremely type-II layered superconductors is studied theoretically through a duality transformation of the layered XY model with frustration. In the limit of weak coupling, we generally find that the Josephson effect is absent if and only if the phase correlations within isolated layers are short range. In the case specific to uniform frustration, we notably identify a decoupled pancake vortex liquid phase that is bounded by first-order and second-order decoupling lines in the magnetic field vs. temperature plane. These transitions potentially account for the flux-lattice melting and for the flux-lattice depinning that is observed in clean high-temperature superconductors.
description: 11 pgs. of Plain TeX, 1 postscript fig., based on a talk given at the VORTEX Euroconference held in Heraklion, Crete, Sept. 1999
Negative Pressure and Naked Singularities in Spherical Gravitational Collapse
Creators: name: Cooperstock, F. I.
name: Jhingan, S.
name: Joshi, P. S.
name: Singh, T. P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Assuming the weak energy condition, we study the nature of the non-central shell-focussing singularity which can form in the gravitational collapse of a spherical compact object in classical general relativity. We show that if the radial pressure is positive, the singularity is covered by a horizon. For negative radial pressures, the singularity will be covered if the ratio of pressure to the density is greater than -1/3 and naked if this ratio is $\leq -1/3$.
description: 7 pages, LaTeX File
Radiômica: uma visão geral
Creators: name: Silva, Tony Alexandre Medeiros Da
name: Carvalho, Eduardo Batista De
name: Cassia, Guilherme De Souza E
name: Carvalho, João Luiz Azevedo De
Publisher: name: Zenodo
Year: 2019
Subjects: Radiômica
Diagnóstico por imagem
Oncologia
Extração de características
Mineração de dados

description: A radiômica apresenta-se como uma área de pesquisa emergente, objetivando extrair dados de alta dimensionalidade de imagens clínicas. As etapas da radiômica apresentam entradas e saídas bem definidas, as quais, se cuidadosamente avaliadas, fornecem resposta ao tratamento da doença e prognóstico confiáveis. Este artigo apresenta um resumo geral das etapas e visão da radiômica focando em exemplos de utilização e desafios para o futuro.
title: An integrated economic-ecological model to evaluate the impacts of nutrient abatement measures in the Baltic Sea
Creators: name: Ahlvik, Lassi
name: Hyytiäinen, Kari
name: Ekholm, Petri
name: Pitkänen, Heikki
Publisher: name: ASC 2011 - Theme session R
Year: 2024
Subjects: Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.The Baltic Sea is threatened by numerous environmental problems, with eutrophication being one of the most severe issues. Mitigation of eutrophication requires policies and abatement measures which aim to reduce nutrient load to the sea. Without proper economic and ecological research, resources could easily be wasted on inefficient measures that do not lead to the desired goals. In this study, we present an integrated economic–ecological model to estimate effects of abatement measures in the Baltic Sea. The model takes into account interdependencies between abatement measures, the accumulation of phosphorus in soil, and the dynamics of nutrients in the sea as well as uncertainties in biological processes. The model is demonstrated by estimating the costs and effects of separate and joint reduction of the use of inorganic fertilizers in all the littoral countries. Reduction of phosphorus fertilization is a cheap abatement measure, especially in countries with high initial soil phosphorus levels. It was shown to be the cost‐effective way to reduce the average levels of cyanobacteria in the Baltic Sea. Nitrogen fertilizer reduction was the most efficient way to reduce the amount of algae in the short term, but it increases the risk of cyanobacterial blooms. Joint reduction decreases both algae and cyanobacteria, but it is not the most cost‐efficient way to reduce either individually. Furthermore, the ecological consequences of load reduction were shown to vary significantly between different sub‐basins. This result suggests that there is no single water management policy that would be optimal in all parts of the Baltic Sea.
e+ e- Annihilation into Hadrons at LEP2 in the Presence of the Anomalous DESY Positron-Jet Event Phenomenon
Creators: name: Jadach, S.
name: Ward, B. F. L.
name: Was, Z.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the allowed parameter regime in the coupling-mass plane implied by the existing LEP2 data on e+ e- -> hadrons at 172.3 GeV for the leptoquark interpretation of the anomalous DESY positron-jet events for four different models of the leptoquark charges and chiral couplings to quarks, for both a loose cut on s'/s and a tight cut on s'/s. We find that this interpretation of the DESY phenomenon is still consistent with the LEP2 data although, for vector leptoquarks, a significant regime of the relevant parameter space is already excluded.
description: 9 pages, 1 figure (LaTex2e + AmsTeX + epsfig.sty)
Assessing the Level of Self-Reliance and Livelihood of Encamped Refugees
Syrian Refugees in Jordan
Creators: name: Schön, Anna-Mara
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: self-reliance
subject: livelihood opportunities
subject: refugees
subject: refugee camps
subject: power dynamics
subject: gender equality
subject: performance measurement
subject: Syria
subject: Jordan
subject: 300
subject: 320
subject: Eigenständigkeit
subject: Lebensunterhalt
subject: Lebenschance
subject: Flüchtling
subject: Flüchtlingslager
subject: Gleichstellung
subject: Leistungsmessung
subject: Syrien
subject: Jordanien

description: Zugleich Dissertation, Universität Kassel, 2020. Die gedruckte Ausgabe ist im Rainer Hampp Verlag, Augsburg, München (www.Hampp-Verlag.de) erschienen.
Thermodynamics of the t-J Ladder: A Stable Finite Temperature Density Matrix Renormalization Group Calculation
Creators: name: Ammon, Beat
name: Troyer, Matthias
name: Rice, T. M.
name: Shibata, N.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Accurate numerical simulations of a doped t-J model on a two-leg ladder are presented for the particle number, chemical potential, magnetic susceptibility and entropy in the limit of large exchange coupling on the rung using a finite temperature density matrix renormalization group (TDMRG) method. This required an improved algorithm to achieve numerical stability down to low temperatures. The thermal dissociation of hole pairs and of the rung singlets are separately observed and the evolution of the hole pair binding energy and magnon spin gap with hole doping is determined.
description: 4 pages, RevTex V3.0, includes 4 eps figures
Measuring the Homogeneity of the Universe Using Polarization Drift
Creators: name: Jimenez, Raul
name: Maartens, Roy
name: Khalifeh, Ali Rida
name: Caldwell, Robert R.
name: Heavens, Alan F.
name: Verde, Licia
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a method to probe the homogeneity of a general universe, without assuming symmetry. We show that isotropy can be tested at remote locations on the past lightcone by comparing the line-of-sight and transverse expansion rates, using the time dependence of the polarization of Cosmic Microwave Background photons that have been inverse-Compton scattered by the hot gas in massive clusters of galaxies. This probes a combination of remote transverse and parallel components of the expansion rate of the metric, and we may use radial baryon acoustic oscillations or cosmic clocks to measure the parallel expansion rate. Thus we can test remote isotropy, which is a key requirement of a homogeneous universe. We provide explicit formulas that connect observables and properties of the metric.
description: Matches accepted version to JCAP; conclusions unchanged; now includes detailed section of the expected S/N of the signal
title: Challenges for stakeholder participation and communication within regional environmental governance. Comparing five environmental risks in the Baltic Sea
Creators: name: Boström, Magnus
name: Dreyer, Marion
name: Jönsson, Anna Maria
Publisher: name: ASC 2011 - Theme session R
Year: 2024
Subjects: Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author.This paper focuses on challenges for stakeholder participation and communication within regional environmental risk governance (international in a regional context). We focus on environmental risks in the Baltic Sea. Our point of departure is the theoretical and normative assumption that the inclusion of a broad range of actors has the potential to facilitate environmental risk governance in both substantive (inclusion of more knowledge and viewpoints) and democratic (inclusion of different values and improved accountability) dimensions. Yet, research so far has done little to investigate the actual potential and challenges for such broad stakeholder participation and communication in a regional context. Such challenges are substantial, because the countries among the Baltic Sea differ considerably in power relations, cultures, and political histories. The paper focuses on how organizers of stakeholder participation and communication can deal with such and other challenges by comparing such processes (e.g. public hearings, scenario workshops) in five key risk issues concerning the Baltic Sea: marine oil transportations, chemicals, overfishing, eutrophication, and alien species. The analysis is based on case studies undertaken within each issue‐area in the international research project RISKGOV—Risk Governance of the Baltic Sea. To investigate the content (what is defined as relevant to communicate about) and form (who can take part, when and in what ways) of stakeholder participation and communication processes, we make use of framing theory and theories of risk communication.
Calculation of optical gain in AlGaN quantum wells for ultraviolet emission
Creators: name: Witzigmann, Bernd
name: Römer, Friedhard
name: Martens, Martin
name: Kuhn, Christian
name: Wernicke, Tim
name: Kneissl, Michael
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: renormalization and regularization
subject: partial differential equations
subject: superlattices
subject: electronic bandstructure
subject: quantum wells
subject: semiconductors
subject: Born approximation
subject: laser theory
subject: Maxwell-Bloch equations
subject: 530
subject: 600
subject: Quantenwell
subject: Übergitter
subject: Partielle Differentialgleichung
subject: Bandstruktur
subject: Halbleiter
subject: Born-Näherung
subject: Maxwell-Bloch-Gleichungen

description: Gefördert durch den Publikationsfonds der Universität Kassel
Magnetic Field Induced Ordering in Quasi-One-Dimensional Quantum Magnets
Creators: name: Wessel, Stefan
name: Haas, Stephan
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Three-dimensional magnetic ordering transitions are studied theoretically in strongly anisotropic quantum magnets. An external magnetic field can drive quasi-one-dimensional subsystems with a spin gap into a gapless regime, thus inducing long-range three-dimensional magnetic ordering due to weak residual magnetic coupling between the subsystems. Compounds with higher spin degrees of freedom, such as N-leg spin-1/2 ladders, are shown to have cascades of ordering transitions. At high magnetic fields, zero-point fluctuations within the quasi-1D subsystems are suppressed, causing quantum corrections to the ordering temperature to be reduced.
description: RevTex, 12 pages with 4 figures
Dynamic Multi-Sector Energy Economic Analysis to Identify Potential of Nuclear and Renewable Energy Options in Expanding Electricity Sector of Developing Countries: Bangladesh Case Study
Creators: name: Sieed, Jubair
Publisher: name: Zenodo
Year: 2021

description: Energy and electricity are very important for continuous growth and development, especially for fast-growing regions of the world. However, with the expansion of energy and electricity sector, the concern of environmental protection also arises. The cheaper electricity generation technologies from traditional fossil fuels involve huge emission of carbon which could easily jeopardize the global plan for climate action. In this study, we utilize the Dynamic Multi-Sector Energy Economic Model (DMSEE) to obtain long-term electricity sector expansion using traditional fuels and modern carbon-free nuclear and renewable energy options. The uniqueness of this model is the incorporation of economic interrelationships among top-down economic sectors and technological constraints of the bottom-up electricity sub-sectors simultaneously. To investigate the techno-economic shifts over time, we applied the model to one of the developing regions of the world, Bangladesh. The country is experiencing double digit growth in the electricity sector due to large-scale activities in the industry and service sectors. Different carbon-emission limits based on Intended Nationally Determined Contributions (INDC) has been considered to obtain potential scope of nuclear and renewable energy options considering technical limitations at the same time. The results of the analysis provide significant policy implications on the electricity generation mix under different circumstances.
Standard sirens with a running Planck mass
Creators: name: Lagos, Macarena
name: Fishbach, Maya
name: Landry, Philippe
name: Holz, Daniel E.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We consider the effect of a time-varying Planck mass on the propagation of gravitational waves (GWs). A running Planck mass arises naturally in several modified gravity theories, and here we focus on those that carry an additional dark energy field responsible for the late-time accelerated expansion of the universe, yet--like general relativity (GR)--propagate only two GW polarizations, both traveling at the speed of light. Because a time-varying Planck mass affects the amplitude of the GWs and therefore the inferred distance to the source, standard siren measurements of $H_0$ are degenerate with the parameter $c_M$ characterizing the time-varying Planck mass, where $c_M=0$ corresponds to GR with a constant Planck mass. The effect of non-zero $c_M$ will have a noticeable impact on GWs emitted by binary neutron stars (BNSs) at the sensitivities and distances observable by ground-based GW detectors such as advanced LIGO and A+, implying that standard siren measurements can provide joint constraints on $H_0$ and $c_M$. Assuming a $Λ$CDM evolution of the universe and taking Planck's measurement of $H_0$ as a prior, we find that GW170817 constrains $c_M = -9^{+21}_{-28}$ ($68.3\%$ credibility). We also discuss forecasts, finding that if we assume $H_0$ is known independently, then 100 BNS events detected by advanced LIGO can constrain $c_M$ to within $\pm0.9$. This is comparable to the current best constraints from cosmology. Similarly, for 100 LIGO A+ BNS detections, it is possible to constrain $c_M$ to $\pm0.5$. When analyzing joint $H_0$ and $c_M$ constraints we find that $\sim 400$ LIGO A+ events are needed to constrain $H_0$ to $1\%$ accuracy. Finally, we discuss the possibility of a nonzero value of $c_M$ biasing standard siren $H_0$ measurements from 100 LIGO A+ detections, and find that $c_M=+1.35$ could bias $H_0$ by 3-4$σ$ too low if we incorrectly assume $c_M=0$.
description: Minor changes and new references
Schauder estimates for equations associated with Lévy generators
Creators: name: Kühn, Franziska
Publisher: name: arXiv
Year: 2018
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G51, 45K05, 60J35

description: We study the regularity of solutions to the integro-differential equation $Af-λf=g$ associated with the infinitesimal generator $A$ of a Lévy process. We show that gradient estimates for the transition density can be used to derive Schauder estimates for $f$. Our main result allows us to establish Schauder estimates for a wide class of Lévy generators, including generators of stable Lévy processes and subordinate Brownian motions. Moreover, we obtain new insights on the (domain of the) infinitesimal generator of a Lévy process whose characteristic exponent $ψ$ satisfies $\text{Re} \, ψ(ξ) \asymp |ξ|^α$ for large $|ξ|$. We discuss the optimality of our results by studying in detail the domain of the infinitesimal generator of the Cauchy process.
description: slightly modified title, updated bibliography
Nachhaltige Emissionsreduzierung durch erneuerbare Eigenstromversorgung
Creators: name: Hannen, Conrad
name: Rahlwes, Lena
name: Hesselbach, Jens
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: 380
subject: Emissionsverringerung
subject: Nachhaltigkeit
subject: Industriebetrieb
subject: Energieversorgung

description: Zum Archiv (et): https://emagazin.et-magazin.de/de/profiles/cb1a7fd451c4/editions
Periodic Instanton Bifurcations and Thermal Transition Rate
Creators: name: Kuznetsov, A. N.
name: Tinyakov, P. G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is shown that periodic instanton solutions may have bifurcations which qualitatively change the behaviour of the finite temperature transition rate. These bifurcations are studied numerically in a quantum mechanical model and in the massive two-dimensional sigma model with the Skyrme term. General rules which determine the behaviour of periodic instantons near bifurcations are derived and applied to the Electroweak Theory.
description: 11 pages, LaTeX, axodraw.sty
Partners instead of patients: Women negotiating power and knowledge within medical encounters for endometriosis
Creators: name: Young, Kate
Publisher: name: Monash University
Year: 2019
Subjects: Health Care

description: Endometriosis is currently poorly understood by the medical sciences; contemporary healthcare has been evidenced as failing to meet the diverse needs of the women who live with the condition. This study examined women’s experiences of navigating knowledge and power within medical encounters for endometriosis. In-depth interviews were conducted with twenty-six women who have been diagnosed with endometriosis about their experiences of the condition and associated healthcare. Women valued both their own knowledge and their doctor’s clinical expertise; as to which they privileged was situational but it was essential the woman dictated which it would be. Women were wary of the social status and power of doctors to reduce their wellbeing through medical labels they did not identify with or by inhibiting their access to care. They identified the need for doctors to listen to and believe them as being essential to the provision of healthcare that meets women’s needs and addresses the complexities of endometriosis. Our findings suggest that medical education needs to equip doctors with the skills to acknowledge and incorporate women’s knowledge of their bodies within the medical encounter, and to understand how their practice affects women’s social and economic participation.
Published article available here: https://doi.org/10.1177/0959353519826170