cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 4: of Diel rewiring and positive selection of ancient plant proteins enabled evolution of CAM photosynthesis in Agave
Creators: name: Yin, Hengfu
name: Guo, Hao-Bo
name: Weston, David
name: Borland, Anne
name: Ranjan, Priya
name: Abraham, Paul
name: Jawdy, Sara
name: Wachira, James
name: Tuskan, Gerald
name: Tschaplinski, Timothy
name: Wullschleger, Stan
name: Guo, Hong
name: Hettich, Robert
name: M. Gross, Stephen
name: Wang, Zhong
name: Visel, Axel
name: Yang, Xiaohan
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Table S3. Biological processes over-represented in ortholog clade C3:CAM:C4 in Agave americana. C3:CAM:C4 represents orthologs shared only by C3, CAM and C4 species. (PDF 17 kb)
การคุ้มครองงานแปลงรูป (Transformative Works) ศึกษาเปรียบเทียบกฎหมายลิขสิทธิ์ของประเทศไทยและต่างประเทศ
Creators: name: ชมพูนุช ศิริสวัสดิ์
Publisher: name: สำนักวิทยบริการ มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตปัตตานี
Year: 2019
Subjects: งานแปลงรูป, งานดัดแปลง, ลิขสิทธิ์, การใช้งานโดยธรรม, transformation, derivative works, copyright, fair use

description: วารสารวิทยบริการ มหาวิทยาลัยสงขลานครินทร์, 30, 2, 99-108
Time- and ensemble-average statistical mechanics of the Gaussian Network Model
Creators: name: Lapolla, Alessio
name: Vossel, Maximilian
name: Godec, Aljaž
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present analytical results (up to a numerical diagonalization of a real symmetric matrix) for a set of time- and ensemble-average physical observables in the non-Hookean Gaussian Network Model (GNM) - a generalization of the Rouse model to elastic networks with links with a certain degree of extensional and rotational stiffness. We focus on a set of coarse-grained observables that may be of interest in the analysis of GNM in the context of internal motions in proteins and mechanical frames in contact with a heat bath. A C++ computer code is made available that implements all analytical results.
The evaluation of heavy metal contents in the bottom ash from Burnaby refuse incinerator
Creators: name: Ting, Jyh-Haw
Publisher: name: University of British Columbia
Year: 2009

description: Eighteen sets of bottom ash samples from the Greater Vancouver Regional District’s (GVRD) Burnaby MSW Incinerator were collected during 1991. The samples were analyzed for particle size distribution based on seven fractions. The coarse fractions with particle sizes greater than the 9.5 mm (3/8 inch) diameter were analyzed as to material content, while the fine fractions with particle sizes less than the 9.5 mm were subjected to leaching tests following the Leachate Extraction Procedure (B.C. Reg. 63/88). Fine materials clinging to the coarse particles were collected and tested for the leachability of heavy metals. The total metal levels in the particles with sizes less than the 9.5 mm diameter were also evaluated. The results of the particle size gradation tests indicate that the bottom ash from the Burnaby MSW Incinerator generally meets the specification for a wellgraded base course specified in the B.C. Standard Specifications for Highway Construction. The material distribution in the fractions with particle sizes greater than the 9.5 mm diameter have shown that magnetic materials contributed about 12 % by weight of the bottom ash stream, which suggests the need of a second magnet. Inert materials such as glass, rock, concrete, ceramic and clinker were found to be the largest component of the coarse particles with sizes greater than the 9.5 mm diameter. The leaching test results of the three fine bottom ash fractions with particle sizes less than the 9.5 mm diameter have shown that lead is the only of the eight selected elements which would leach out with levels exceeding the regulation limits. In the three fine bottom ash fractions, the one with particle sizes between the 2.36 mm and the 4.75 mm diameter were found to contain the greatest leachable lead levels. On the other hand, the coarsest fraction with particle sizes between the 4.75 mm and 9.5 mm diameter were found to leach out lead with the lowest levels. The fine material clinging to the coarse particles were also found to leach out heavy metals with levels comparable to the three fine bottom ash fractions. The results of the total metal concentrations in the three fine bottom ash fractions indicate that metal levels generally increase with a particle size decrease. For leachable metal levels, the trend is not apparent.
Spin current in BF theory
Creators: name: Matwi, Malik
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we introduce a current which we call spin current corresponding to the variation of the matter action in BF theory with respect to the spin connection $A$ which takes values in Lie algebra $\mathfrak{so}(3,\mathbb{C})$ in self-dual formalism. For keeping the constraint $DB^i=0$ satisfied, we suggest adding a new term to the BF Lagrangian using a new field $ψ^i$ which can be used for calculating the spin current. We derive the equations of motion and discuss the solutions. We will see that the solutions of that equations do not require a specific metric on the manifold $M$, we just need to know the symmetry of the system and the information about the spin current. Finally we find the solutions in a spherical and cylindrical symmetric systems.
description: 23 pages, accepted for publication on Physics
A gauge theory analog of some "stringy" D-instantons
Creators: name: Krefl, Daniel
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We argue that one can see a specific class of "stringy" D-instantons in the underlying 4D gauge theory as the UV completion of an ordinary gauge instanton of a completely broken gauge group corresponding to the "empty" cycle the D-instanton is located on. In this sense, the D-instanton induced non-perturbative superpotential can be qualitatively inferred directly from pure field-theory considerations.
description: 4 pages, 3 figures; typos corrected; discussion of dynamical scale extended
Dynamical diversity and metastability in a hindered granular column near jamming
Creators: name: Luck, J. M.
name: Mehta, Anita
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Granular media jam into a panoply of metastable states. The way in which these states are achieved depends on the nature of local and global constraints on grains; here we investigate this issue by means of a non-equilibrium stochastic model of a hindered granular column near its jamming limit. Grains feel the constraints of grains above and below them differently, depending on their position. A rich phase diagram with four dynamical phases (ballistic, activated, logarithmic and glassy) is revealed. The statistics of the jamming time and of the metastable states reached as attractors of the zero-temperature dynamics is investigated in each of these phases. Of particular interest is the glassy phase, where intermittency and a strong deviation from Edwards' flatness are manifest.
description: 23 pages, 12 figures
คุณลักษณะที่พึงประสงค์ของผู้ให้บริการหอสมุดจอห์น เอฟ เคนเนดี้ ในทัศนะของนักศึกษา
Creators: name: ถกลรัตน์ ทองได้หนู, สอปิยะ บุญตามช่วย
Publisher: name: สำนักวิทยบริการ มหาวิทยาลัยสงขลานครินทร์ วิทยาเขตปัตตานี
Year: 2019
Subjects: คุณลักษณะที่พึงประสงค์, ผู้ให้บริการ, นักศึกษา, หอสมุดจอห์น เอฟ เคนเนดี้, desirable characteristics, library staffs, students, John F. Kennedy Library

description: วารสารวิทยบริการ มหาวิทยาลัยสงขลานครินทร์, 30, 2, 109-120
NIMFRU Briefing Note: Improving Disaster Response Through a Livelihood Impact Based (LIMB) Flood Forecasting System
Creators: name: Ciampi, Luisa
name: Myers, Jacob
name: Plumpton, Heather
name: Cornforth, Rosalind
name: Petty, Celia
Publisher: name: Zenodo
Year: 2021
Subjects: LIMB, NIMFRU, Disaster Response, Flooding

description: This policy brief is for the Ugandan Government and explains how the Livelihood Impact Based System (LIMB) has been designed, built, and put into practice through the NIMFRU project. Importantly it also identifies how this system can support communities and disaster managers to improve disaster response, and has the capability being scaled up across Africa.
Universal conductance fluctuations in epitaxial GaMnAs ferromagnets: structural and spin disorder
Creators: name: Vila, L.
name: Giraud, R.
name: Thevenard, L.
name: Lemaitre, A.
name: Pierre, F.
name: Dufouleur, J.
name: Mailly, D.
name: Barbara, B.
name: Faini, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Mesoscopic transport measurements reveal a large effective phase coherence length in epitaxial GaMnAs ferromagnets, contrary to usual 3d-metal ferromagnets. Universal conductance fluctuations of single nanowires are compared for epilayers with a tailored anisotropy. At large magnetic fields, quantum interferences are due to structural disorder only, and an unusual behavior related to hole-induced ferromagnetism is evidenced, for both quantum interferences and decoherence. At small fields, phase coherence is shown to persist down to zero field, even in presence of magnons, and an additional spin disorder contribution to quantum interferences is observed under domain walls nucleation.
description: 15 pages, 4 figures
Ornithischia Seeley 1887
Creators: name: Párraga, Javier
name: Prieto-Márquez, Albert
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Ornithischia

description: Ornithischia Seeley, 1887  Ornithopoda Marsh, 1881
description: Published as part of Párraga, Javier & Prieto-Márquez, Albert, 2019, Pareisactus evrostos, a new basal iguanodontian (Dinosauria: Ornithopoda) from the Upper Cretaceous of southwestern Europe, pp. 247-258 in Zootaxa 4555 (2) on page 248, DOI: 10.11646/zootaxa.4555.2.5, http://zenodo.org/record/2624337
When worlds collide: Ontology and metafiction in Stephen King’s Song of Susannah and The Dark Tower
Creators: name: Τσομπάνος, Δημήτριος-Αγαμέμνων Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Στίβεν Κινγκ
Μεταμοντερνισμός
Μεταμυθοπλασία
Stephen King
Postmodernism
Metafiction

description: This project examines the relationship between reality and fiction in Stephen King’s Song of Susannah (2004) and The Dark Tower (2004). One of its aims is to explore the double role King plays both as a writer and a character in these two novels and the implications his authorial practice has on the characters’ existence and the text’s overall structure. The inclusion of the writer within the story is seen, in this thesis, as an attempt to dissociate the author from the text’s creation and to elevate the role the characters play in it. This project intends to expose the fluidity that characterizes the notion of fictional reality and the plurality of narrative worlds this can create especially in relation to King’s The Dark Tower universe the two primary sources under examination here belong to. Another aim of this project is to discuss the relationship that a text can establish with other texts and the intertextual and cross-referential dynamics this can generate with regard to the development of the story. In order to accomplish that, texts that have influenced and have been influenced by The Dark Tower series are considered in the two chapters of this thesis. Finally, this project will attempt to critically approach terms such as metafiction, intertextuality, deus ex machina, mise-en-abyme, deferral
description: .H ερευνητική εργασία εξετάζει τη σχέση ανάμεσα στην πραγματικότητα και τη μυθοπλασία στα έργα του Στίβεν Κινγκ, Το Τραγούδι της Σουζάνας (2004) και Ο Μαύρος Πύργος (2004). Ένας από τους στόχους της είναι να εξερευνήσει τον διπλό ρόλο του Κινγκ ως συγγραφέα και ως χαρακτήρα στα δυο αυτά μυθιστορήματα και τις επιπτώσεις της συγγραφικής του πρακτικής στην υπόσταση των χαρακτήρων και στο συνολικό οικοδόμημα του κειμένου. Σε αυτή την διατριβή, η ενσωμάτωση του συγγραφέα στην ιστορία θεωρείται ως μια απόπειρα αποσύνδεσής του από τη δημιουργία του κειμένου, ενώ παράλληλα αναδεικνύει τον ρόλο που παίζουν οι χαρακτήρες σε αυτή. Σκοπός της εργασίας είναι να αποκαλύψει την ρευστότητα που χαρακτηρίζει την έννοια της μυθοπλαστικής πραγματικότητας, αλλά και την πληθώρα αφηγηματικών κόσμων που αυτή δημιουργεί, ιδιαίτερα στο πλαίσιο του σύμπαντος του Μαύρου Πύργου στο οποίο ανήκουν οι δύο κύριες πηγές που εξετάζουμε. Ένας ακόμα στόχος της εργασίας είναι να εξετάσει τη σχέση που εγκαθιδρύει ένα κείμενο με άλλα κείμενα, καθώς και την ενδοκειμενική δυναμική αλλά και τις διασταυρούμενες αναφορές που παράγονται όσον αφορά την ανάπτυξη της ιστορίας. Προκειμένου να επιτευχθεί αυτό, κείμενα που έχουν επηρεάσει και έχουν επηρεαστεί από τη σειρά Ο Μαύρος Πύργος λαμβάνονται υπόψιν στα δύο κεφάλαια αυτής της διατριβής. Τέλος, αυτή η εργασία θα επιχειρήσει να προσεγγύσει με κριτική ματιά όρους όπως μεταμυθοπλασία, ενδοκειμενικότητα, από μηχανής θεός, εγκιβωτισμένη αφήγηση, μετάθεση νοήματος.
Pseudo-Relevance Feedback for Multiple Representation Dense Retrieval
Creators: name: Wang, Xiao
name: Macdonald, Craig
name: Tonellotto, Nicola
name: Ounis, Iadh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Pseudo-relevance feedback mechanisms, from Rocchio to the relevance models, have shown the usefulness of expanding and reweighting the users' initial queries using information occurring in an initial set of retrieved documents, known as the pseudo-relevant set. Recently, dense retrieval -- through the use of neural contextual language models such as BERT for analysing the documents' and queries' contents and computing their relevance scores -- has shown a promising performance on several information retrieval tasks still relying on the traditional inverted index for identifying documents relevant to a query. Two different dense retrieval families have emerged: the use of single embedded representations for each passage and query (e.g. using BERT's [CLS] token), or via multiple representations (e.g. using an embedding for each token of the query and document). In this work, we conduct the first study into the potential for multiple representation dense retrieval to be enhanced using pseudo-relevance feedback. In particular, based on the pseudo-relevant set of documents identified using a first-pass dense retrieval, we extract representative feedback embeddings (using KMeans clustering) -- while ensuring that these embeddings discriminate among passages (based on IDF) -- which are then added to the query representation. These additional feedback embeddings are shown to both enhance the effectiveness of a reranking as well as an additional dense retrieval operation. Indeed, experiments on the MSMARCO passage ranking dataset show that MAP can be improved by upto 26% on the TREC 2019 query set and 10% on the TREC 2020 query set by the application of our proposed ColBERT-PRF method on a ColBERT dense retrieval approach.
description: 10 pages
Ambientes Educativos Inovadores: a realidade de escolas portuguesas Innovative Educational Environments: Portuguese schools' reality
Creators: name: Monteiro, Angélica
name: Figueiroa, Alcina
name: Couto, José
name: Campos, Orquídea
Publisher: name: Escola Superior de Educação de Paula Frassinetti - CIPAF
Year: 2019
Subjects: TIC; Ambientes Educativos Inovadores; Competências do séc. XXI; Ensino-aprendizagem; Recursos educativos digitais

description: Com a criação de Ambientes Educativos Inovadores (AEI) procura-se incentivar uma mudança no paradigma de ensinar e aprender, visando uma adequação ao perfil e às competências do estudante do século XXI. No sentido de promover uma aproximação aos AEI implementados em Portugal, em termos de caraterísticas, metodologias, competências desenvolvidas e efeitos observados, foi elaborado um estudo exploratório, de cariz descritivo e interpretativo junto de responsáveis por estes espaços. Os dados, obtidos através de um questionário com questões abertas e tratados através de análise estatística simples e análise de conteúdo, evidenciam que apesar da diversidade a nível das caraterísticas dos espaços e de metodologias, existe uma confluência para o perfil do aluno à saída da escolaridade obrigatória. The development of Future Classroom Labs aims to encourage a change in the paradigm of teaching and learning to adapt to the 21st century student’s profile. In order to promote an approach to the AEIs implemented in Portugal, in terms of characteristics, methodologies, developed competencies and effects, a descriptive, interpretative and exploratory study was elaborated, with those responsible for these spaces. The data, obtained through a questionnaire with open questions and treated through simple statistical analysis and content analysis, show that despite the diversity in the characteristics of the spaces and methodologies, there is a confluence for the student's profile of after finishing compulsory education. Keywords: ICT; Future Classroom Labs; XXI century competences; Teaching-learning; Digital Educational Resources
description: Saber & Educar, n. 25 (2018): Educar com TIC para o Século XXI
Tecnologias da informação e comunicação (TICs) na promoção da saúde: considerações bioéticas Information and Communication Technologies (ICTs) in the health promotion: Bioethics considerations
Creators: name: Carlotto, Ivani Nadir
name: Pimenta Dinis, Maria Alzira
Publisher: name: Escola Superior de Educação de Paula Frassinetti - CIPAF
Year: 2019
Subjects: Bioética; Educação Digital; Promoção da Saúde; TICs

description: Progressivamente, os sistemas de Tecnologia de Informação e Comunicação (TIC) ingressam no cotidiano dos utilizadores. A disponibilidade de múltiplas interfaces multimídia favorece o desenvolvimento e o ajustamento de soluções em TIC destinadas a todos os aspectos da sociedade, incluindo a área de saúde. Para enfrentar os desafios do avanço adaptativo e contínuo das TIC nesta matéria, algumas questões tornam-se relevantes para a implementação bem-sucedida de soluções de cuidados de saúde fundamentadas em tecnologia digital. À luz do envelhecimento das sociedades que enfrentam a proximidade da vigilância on-line permanente, diferentes requisitos e expectativas dos usuários finais devem ser considerados pelas partes interessadas, envolvendo o grau de inovação dos aplicativos, conveniência, qualidade das informações de saúde, educação e inclusão digital do paciente, aceitação e aderência, assim como segurança e privacidade dos dados. Esse cenário sugere uma atitude bioética reflexiva e cautelosa em relação às inovações tecnológicas que permeiam a eSaúde na contemporaneidade. Abstract: Progressively, Information and Communication Technology (ICT) systems enter the daily life of users. The availability of multiple multimedia interfaces favours the development and adjustment of ICT solutions aimed at all aspects of society, including health. To address the challenges of adaptive and continuous ICT advancement in this area, some issues become relevant to the successful implementation of ICT-based healthcare solutions. Considering the ageing of societies facing the proximity of permanent online surveillance, different requirements and expectations of end users should be considered by stakeholders, involving the degree of application innovation, convenience, quality of health information, education and inclusion digital patient acceptance and adherence, as well as data security and privacy. This scenario suggests a reflexive and cautious bioethical attitude towards the technological innovations that permeate eHealth in the contemporary world. Keywords: Bioethics; Digital Education; Health promotion; ICTs
description: Saber & Educar, n. 25 (2018): Educar com TIC para o Século XXI
Economic risk quantification of toll highway projects
Creators: name: Hatakama, Toshiaki
Publisher: name: University of British Columbia
Year: 2009

description: The objectives of this thesis are to model economic and financial performance of user-pay highway facilities, to explore the sensitivity of project performance to changes in primary variables, to measure the uncertainty surrounding user-pay highway facilities, and to explore ways of reducing the uncertainty. Special attention is given to the revenue phase. The model consists of three levels: work package/revenue stream level; project performance level; and project decision level. The model calculates work package duration, work package cost, and revenue stream for the work package/revenue stream level; project duration, project cost, and project revenue for the project performance level; and project's net present value (NPV) for the project decision level. They are described by their expected value, standard deviation, skewness, and kurtosis. This model is applied to a numerical example patterned after a Japanese project to carry out a sensitivity and risk analysis, and highly sensitive primary variables are identified. The case study may be viewed as a comparison of current Japanese deterministic feasibility analysis with a probabilistic one, using the same underlying project model. Risk management strategies are presented, and their impacts on overall project risks are measured. Results from applying the model to a sample project show that it is very difficult for a highway operator alone to reduce risks. It is suggested that it is very important that risk sharing be negotiated with the government and some guarantee of support be received.
NIMFRU Project Brief: Reducing the Cost and Impact of Disasters
Creators: name: Ciampi, Luisa
name: Myers, Jacob
name: Plumpton, Heather
name: Cornforth, Rosalind
name: Petty, Celia
Publisher: name: Zenodo
Year: 2021
Subjects: Disaster Response, Flooding, Uganda

description: NIMFRU (National-scale Impact Based Forecasting of Flood Risk for Uganda), is a multi-partner project which aims to improve the targeting, relevance and communication of flood warning and response in Uganda. It responds to the need from the Forecast-Based Finance community for Impact-Based Forecasts at a national scale, through a new approach that complements comprehensive flood impact assessments with basic household economy/socio-economic information, to guide preparedness, protection, and response. These assessments will ensure that key decision makers, from local to national levels, have the evidence-base they need to deliver timely and targeted interventions to minimize the impacts of flooding on lives and livelihoods. This project brief provides readers with a comprehesive overview of the project.
On the role of solar wind expansion as a source of whistler waves: scattering of suprathermal electrons and heat flux regulation in the inner heliosphere
Creators: name: Micera, A.
name: Zhukov, A. N.
name: López, R. A.
name: Boella, E.
name: Tenerani, A.
name: Velli, M.
name: Lapenta, G.
name: Innocenti, M. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The role of solar wind expansion in generating whistler waves is investigated using the EB-iPic3D code, which models solar wind expansion self-consistently within a fully kinetic semi-implicit approach. The simulation is initialized with an electron velocity distribution function modeled after Parker Solar Probe observations during its first perihelion at 0.166 au, consisting of a dense core and an anti-sunward strahl. This distribution function is initially stable with respect to kinetic instabilities. Expansion drives the solar wind into successive regimes where whistler heat flux instabilities are triggered. These instabilities produce sunward whistler waves initially characterized by predominantly oblique propagation with respect to the interplanetary magnetic field. The excited waves interact with the electrons via resonant scattering processes. As a consequence, the strahl pitch angle distribution broadens and its drift velocity reduces. Strahl electrons are scattered in the direction perpendicular to the magnetic field, and an electron halo is formed. At a later stage, resonant electron firehose instability is triggered and further affects the electron temperature anisotropy as the solar wind expands. Wave-particle interaction processes are accompanied by a substantial reduction of the solar wind heat flux. The simulated whistler waves are in qualitative agreement with observations in terms of wave frequencies, amplitudes and propagation angles. Our work proposes an explanation for the observations of oblique and parallel whistler waves in the solar wind. We conclude that solar wind expansion has to be factored in when trying to explain kinetic processes at different heliocentric distances.
Quantum dynamics of a planar rotor driven by suddenly switched combined aligning and orienting interactions
Creators: name: Mirahmadi, Marjan
name: Schmidt, Burkhard
name: Friedrich, Bretislav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate, both analytically and numerically, the quantum dynamics of a planar (2D) rigid rotor subject to suddenly switched-on or switched-off concurrent orienting and aligning interactions. We find that the time-evolution of the post-switch populations as well as of the expectation values of orientation and alignment reflects the spectral properties and the eigensurface topology of the planar pendulum eigenproblem established in our earlier work [Frontiers in Physics 2, 37 (2014); Eur. Phys. J. D 71, 149 (2017)]. This finding opens the possibility to examine the topological properties of the eigensurfaces experimentally as well as provides the means to make use of these properties for controlling the rotor dynamics in the laboratory.
description: 23 pages, 8 figures. Submitted to the New Journal of Physics
Wannier functions and exchange integrals: The example of LiCu$_{2}$O$_{2}$
Creators: name: Mazurenko, V. V.
name: Skornyakov, S. L.
name: Kozhevnikov, A. V.
name: Mila, F.
name: Anisimov, V. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Starting from a single band Hubbard model in the Wannier function basis, we revisit the problem of the ligand contribution to exchange and derive explicit formulae for the exchange integrals in metal oxide compounds in terms of atomic parameters that can be calculated with constrained LDA and LDA+U. The analysis is applied to the investigation of the isotropic exchange interactions of LiCu$_{2}$O$_{2}$, a compound where the Cu-O-Cu angle of the dominant exchange path is close to 90$^{\circ}$. Our results show that the magnetic moments are localized in Wannier orbitals which have strong contribution from oxygen atomic orbitals, leading to exchange integrals that considerably differ from the estimates based on kinetic exchange only. Using LSDA+U approach, we also perform a direct {\it ab-initio} determination of the exchange integrals LiCu$_{2}$O$_{2}$. The results agree well with those obtained from the Wannier function approach, a clear indication that this modelization captures the essential physics of exchange. A comparison with experimental results is also included, with the conclusion that a very precise determination of the Wannier function is crucial to reach quantitative estimates.
description: 8 pages, 8 figures
Raman Linewidth Contributions from Four-Phonon and Electron-Phonon Interactions in Graphene
Creators: name: Han, Zherui
name: Yang, Xiaolong
name: Sullivan, Sean E.
name: Feng, Tianli
name: Shi, Li
name: Li, Wu
name: Ruan, Xiulin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Raman peak position and linewidth provide insight into phonon anharmonicity and electron-phonon interactions (EPI) in materials. For monolayer graphene, prior first-principles calculations have yielded decreasing linewidth with increasing temperature, which is opposite to measurement results. Here, we explicitly consider four-phonon anharmonicity, phonon renormalization, and electron-phonon coupling, and find all to be important to successfully explain both the $G$ peak frequency shift and linewidths in our suspended graphene sample at a wide temperature range. Four-phonon scattering contributes a prominent linewidth that increases with temperature, while temperature dependence from EPI is found to be reversed above a doping threshold ($\hbarω_G/2$, with $ω_G$ being the frequency of the $G$ phonon).
A Quantum Photonic Interface for Tin-Vacancy Centers in Diamond
Creators: name: Rugar, Alison E.
name: Aghaeimeibodi, Shahriar
name: Riedel, Daniel
name: Dory, Constantin
name: Lu, Haiyu
name: McQuade, Patrick J.
name: Shen, Zhi-Xun
name: Melosh, Nicholas A.
name: Vučković, Jelena
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The realization of quantum networks critically depends on establishing efficient, coherent light-matter interfaces. Optically active spins in diamond have emerged as promising quantum nodes based on their spin-selective optical transitions, long-lived spin ground states, and potential for integration with nanophotonics. Tin-vacancy (SnV$^{\,\textrm{-}}$) centers in diamond are of particular interest because they exhibit narrow-linewidth emission in nanostructures and possess long spin coherence times at temperatures above 1 K. However, a nanophotonic interface for SnV$^{\,\textrm{-}}$ centers has not yet been realized. Here, we report cavity enhancement of the emission of SnV$^{\,\textrm{-}}$ centers in diamond. We integrate SnV$^{\,\textrm{-}}$ centers into one-dimensional photonic crystal resonators and observe a 40-fold increase in emission intensity. The Purcell factor of the coupled system is 25, resulting in channeling of the majority of photons ($90\%$) into the cavity mode. Our results pave the way for the creation of efficient, scalable spin-photon interfaces based on SnV$^{\,\textrm{-}}$ centers in diamond.
Πρόβλεψη με προσαρμοσμένο τοπικό μοντέλο για χρονοσειρά με τάση
Creators: name: Κουρουτζιούδη, Δέσποινα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Πρόβλεψη χρονοσειρών
Χρονοσειρές με τάση
Τοπικά μοντέλα
Forecasting time series
Time series with trend
Local models

description: Σκοπός της διατριβής ήταν η παρουσίαση μιας νέας μεθόδου πρόβλεψης για χρονοσειρές με τάση με τη χρήση τοπικού μοντέλου. Αρχικά, δίνονται κάποιες θεμελιώδεις έννοιες και τα βασικά χαρακτηριστικά μιας χρονοσειράς. Στη συνέχεια, εισάγεται η έννοια της πρόβλεψης, παρουσιάζονται κάποιες γενικότερες μέθοδοι πρόβλεψης χρονοσειρών που υπάρχουν στη βιβλιογραφία και δίνονται τα πιο γνωστά μέτρα απόδοσης της πρόβλεψης. Έπειτα, περιγράφεται η πρόβλεψη στάσιμων και μη στάσιμων χρονοσειρών με τη χρήση γραμμικών μοντέλων. Ακόμη, δίνεται η έννοια του ‘χάους’ και περιγράφονται κάποια μη γραμμικά μοντέλα για πρόβλεψη, με ιδιαίτερη έμφαση στα τοπικά μοντέλα. Επιπλέον, προτείνεται μια νέα μέθοδος προσαρμογής τοπικού γραμμικού μοντέλου για πρόβλεψη απευθείας σε μη στάσιμες χρονοσειρές. Τέλος, μέσα από προσομοιώσεις, συγκρίνεται η απόδοση της προτεινόμενης μεθόδου με δυο άλλες κλασικές μεθόδους πρόβλεψης και δίνεται μια εφαρμογή σε πραγματικά δεδομένα.
description: The aim of the present thesis was the representation of a new method for prediction with local model for time series with trend. Initially, they are given some fundamental concepts and the basic features of a time series. Subsequently, it is introduced the concept of forecast, they are represented some start-of –the-art forecasting methods and they are given the most popular forecast performance measures. Furthermore, it is described the prediction of stationary and non stationary time series with linear models. Then, is given the concept of ‘chaos’ and are described some non linear forecasting methods, with particular emphasis on local models. Additionally, a new method is proposed for prediction with adjusted local model for time series with trend. Finally, Monte Carlo simulations are used to compare the performance of the proposed method with two other classical forecasting methods and an application to real data is also given.
Η μεταφορά και η μελοποίηση των ύμνων της Θείας Λειτουργίας στην τουρκική γλώσσα
Creators: name: Δημητριάδης, Χρήστος (Χρύσανθος) Σταύρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: τουρκικά
καραμανλίδικα
εγκόλπιον
turkish-karamanlidika
handbook (engolpion)

description: Σκοπός της διατριβής ήταν η παρουσίαση των μουσικών κειμένων της θείας λειτουργίας στην τουρκική γλώσσα. Παρουσιάσαμε τον οικουμενικό χαρακτήρα της θείας ευχαριστίας, τους λόγους για τους οποίους δημιουργήθηκε η ανάγκη τέλεσης της θείας λειτουργίας στην τουρκική γλώσσα, καθώς και την περίπτωση των χριστιανών της Τουρκίας. Στη συνέχεια παρουσιάσαμε αναλυτικά τα βασικά μουσικά κείμενα που χρησιμοποιούνται στην τέλεση της θείας λειτουργίας στην τουρκική γλώσσα, τα οποία προέρχονται από τα αντίστοιχα κλασικά και εγκεκριμένα (ελληνικά) μουσικά κείμενα από το Οικουμενικό Πατριαρχείο. Ακόμη, για χρηστικούς λόγους, παρατέθηκαν οι ύμνοι, καθώς και οι στίχοι των αντιφώνων όλων των περιπτώσεων, σύμφωνα με το Εγκόλπιον του Αναγνώστου, εκδόσεως της Αποστολικής Διακονίας της Ελλάδος. Ένα άλλο θέμα που θίξαμε ήταν οι τεχνικές δυσκολίες που συναντήσαμε κατά τη μεταφορά των κειμένων στην τουρκική γλώσσα, λόγω της διαφορετικότητας της σύνταξης των προτάσεων. Ασχοληθήκαμε επιπλέον με την ιστορική διάσταση των ήδη μεταφρασμένων ύμνων στην τουρκική γλώσσα από το παρελθόν (καραμανλίδικα) και αναφερθήκαμε επίσης και στην ιδιαίτερη περίπτωση του παπαΕυθύμη και τέλος παρουσιάσαμε τα μουσικά κείμενα των ύμνων της θείας λειτουργίας στην τουρκική γλώσσα, σε παρασημαντική της ελληνικής εκκλησιαστικής μουσικής.
description: The aim of this thesis was the presentation of the music scores of the Divine Liturgy in the Turkish language. We introduced the universal character of the Holy Eucharist, the reasons for which the need to commit the Divine Liturgy in the Turkish language was created, as well as the case of the Turkish Christians. Then we presented in detail the main musical scores used in the Divine Liturgy in the Turkish language, which derive from the classic and approved (Greek) music texts of the Ecumenical Patriarchate. Moreover, for reasons of convenience, the hymns and lyrics of the antiphons of all cases were quoted, according to the Handbook of Anagnostou issued by the Apostolic Diakonia of Greece. Another issue presented was the technical difficulties encountered in transposing texts into the Turkish language because of the specific nature of sentence structure. Furthermore, we dealt with the historic significance of the hymns already translated into the Turkish language in the past (Karamanlidika), also referring to the particular case of Papaefthymis, whereas finally we presented the musical scores of the hymns of the Divine Liturgy in the Turkish language in notation of Greek church music.
Αυτονομία και παιδεία: η παιδευτική σημασία της πολιτικής αυτοθέσμισης. Στη σκέψη του Κορνήλιου Καστοριάδη.
Creators: name: Μουτσιάνα, Χρυσούλα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Αυτονομία-Παιδεία
Καστοριάδης
Autonomy-Paideia
Castoriadis

description: Στην παρούσα εργασία μελετάται η σχέση αυτονομίας και παιδείας στη σκέψη του Κορνήλιου Καστοριάδη, εντός του εννοιολογικού πλαισίου της σκέψης του οποίου αντλούνται τόσο τα ερεθίσματα για τη γέννηση των ερωτημάτων όσο και τα στοιχεία για την προσέγγιση απαντήσεων, για τη διαύγαση της ερευνητικής προβληματικής. Αυτό που επιχειρείται είναι να αναδειχθεί η εσωτερική σχέση, η συμφυτότητα ακόμη, της αυτονομίας, ως συλλογικής και ρητής αυτοθέσμισης της κοινωνίας, και της παιδείας, ως μιας μορφούσας αγωγής του ριζικού φαντασιακού εντός του κοινωνικού πεδίου, και, ειδικότερα, εντός μιας δημοκρατικής κοινότητας. Σε έναν μάλλον αρχικό διερευνητικό σταθμό- που εντός των ορίων της παρούσας εργασίας συμπίπτει με το τέλος αυτής- αυτό που εντούτοις διαπιστώνεται είναι ο παιδευτικός χαρακτήρας και η παιδευτική σημασία που ενέχει η ίδια η εξάσκηση της αυτονομίας, ο ίδιος ο δρόμος προς τη δημοκρατική πολιτική. Παιδευτικός χαρακτήρας που εν τέλει εντοπίζεται στη βάση των ίδιων των κοινωνικών διαπροσωπικών σχέσεων, στη βάση της αλληλεπίδρασης των υποκειμένων με την ετερότητα μέσω του διαλόγου, όπως και στη βάση του ίδιου του σχηματισμού της βούλησης, της βουλευτικής υποκειμενικότητας που έρχεται σε ρήξη με κάθε μορφή ετερονομίας και βούλεται να κινηθεί και να κινείται διαρκώς σε μια κατεύθυνση κοινωνικής (ατομικής και συλλογικής) αυτονομίας.
description: In this paper the object of study is the relation between autonomy and paideia in the thought of Cornelius Castoriadis, upon whose conceptual framework of thought are being drawn both the incentives for the birth of questions and the clues for approaching the answers, for the clarification of the inquiring problem. What is attempted here is the projection of the inner relationship, the inherency yet, of both autonomy, as a collective and explicit self-institution of society, and paideia, as a formative treatment of the radical imaginary in the social field, and particularly in a democratic community. In a rather preliminary inquiring point, that within the limits of this study coincides with the end thereof, what is yet indicated is the instructive, paideiatic nature and significance involved in the practising itself of autonomy, in the road itself to democratic politics. This instructive, paideiatic character is in final identified upon the basis of social interpersonal relationships themselves, upon the very basis of the interaction of subjects with otherness through dialogue, as well as upon the basis of the formation of will itself, of the deliberative subjectivity which opposes all forms of heteronomy and is willing to move and constantly be moving in a direction of social (individual and collective) autonomy.
ALEn's Maneuvers Dataset for Student Modeling
Creators: name: Santamaria-Bonfil, G.
Publisher: name: Zenodo
Year: 2019
Subjects: Bag of Errors, ALEn3D data

description: Usage dataset in zip format corresponding to 5 maneuvers from the Virtual-Reality system called ALEn3D. These are composed by the Bag of Errors of students using the ALEn3D system with two grain types (1 coarser, 2 finer).
 Data also contain additional information such as the user type, geographical location of the user (area and zone), total course time (in hours), total number of maneuvers taught in a course, and so on.
 Column Grade corresponds to the theoretical evaluation score.
 Last columns correspond to several proficiency thresholds used to determine if the student is trained or not.
description: This data set is used for a publication TBD.
Asteroseismology across the HR diagram
Creators: name: Monteiro, M. J. P. F. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High precision spectroscopy provides essential information necessary to fully exploit the opportunity of probing the internal structure of stars using Asteroseismology. In this work we discuss how Asteroseismology combined with High Precision Spectroscopy can establish a detailed view on stellar structure and evolution of stars across the HR diagramme.
description: 6 pages, 2 figures - to appear in Precision Spectroscopy in Astrophysics, (Eds) L. Pasquini, M. Romaniello, N.C. Santos, and A. Correia, ESO Astrophysics Symposia, 2007
Understanding and controlling hexagonal patterns of wrinkles in neo-Hookean elastic bilayer structures
Creators: name: Zhang, Teng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A controlled surface wrinkling pattern has been widely used in diverse applications, such as stretchable electronics, smart windows, and haptics. Here, we focus on hexagonal wrinkling patterns because of their great potentials in realizing anisotropic and tunable friction and serving as a dynamical template for making non-flat thin films through self-assembling processes. We employ large-scale finite element simulations of a bilayer neo-Hookean solid (e.g., a film bonded on a substrate) to explore mechanical principles that govern the formation of hexagonal wrinkling patterns and strategies for making nearly perfect hexagonal patterns. In our model, the wrinkling instabilities are driven by the confined film expansion. Our results indicate robust hexagonal patterns exist at a relatively small modulus mismatch (on the order of 10) between the film and substrate. Besides, the film expansion should not exceed the onset of wrinkling value too much to avoid post-buckling patterns. By harnessing the imperfection insensitivity of one-dimension sinusoidal wrinkles, we apply a sequential loading to the bilayer structure to produce the nearly perfect hexagonal patterns. Lastly, we discuss the connection between the simple bilayer model and the gradient structures commonly existed in experiments.
description: 17 pages, 5 figures
A general asymptotic scheme for inference under order restrictions
Creators: name: Anevski, D.
name: Hössjer, O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62E20, 62G07 (Primary) 60G18 (Secondary)

description: Limit distributions for the greatest convex minorant and its derivative are considered for a general class of stochastic processes including partial sum processes and empirical processes, for independent, weakly dependent and long range dependent data. The results are applied to isotonic regression, isotonic regression after kernel smoothing, estimation of convex regression functions, and estimation of monotone and convex density functions. Various pointwise limit distributions are obtained, and the rate of convergence depends on the self similarity properties and on the rate of convergence of the processes considered.
description: Published at http://dx.doi.org/10.1214/009053606000000443 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Site-resolved imaging of ultracold fermions in a triangular-lattice quantum gas microscope
Creators: name: Yang, Jin
name: Liu, Liyu
name: Mongkolkiattichai, Jirayu
name: Schauss, Peter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Quantum gas microscopes have expanded the capabilities of quantum simulation of Hubbard models by enabling the study of spatial spin and density correlations in square lattices. However, quantum gas microscopes have not been realized for fermionic atoms in frustrated geometries. Here, we demonstrate the single-atom resolved imaging of ultracold fermionic $^{6}$Li atoms in a triangular optical lattice with a lattice constant of 1003 nm. The optical lattice is formed by a recycled narrow-linewidth, high-power laser combined with a light sheet to allow for Raman sideband cooling on the $D_1$ line. We optically resolve single atoms on individual lattice sites using a high-resolution objective to collect scattered photons while cooling them close to the two-dimensional ground vibrational level in each lattice site. By reconstructing the lattice occupation, we measure an imaging fidelity of ~98%. Our new triangular lattice microscope platform for fermions clears the path for studying spin-spin correlations, entanglement and dynamics of geometrically frustrated Hubbard systems which are expected to exhibit exotic emergent phenomena including spin liquids and kinetic frustration.
description: 9 pages, 5 figures, comments welcome!
Formulation and Resolutions of the Red Sky Paradox
Creators: name: Kipping, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Most stars in the Universe are red dwarfs. They outnumber stars like our Sun by a factor of 5 and outlive them by another factor of 20 (population-weighted mean). When combined with recent observations uncovering an abundance of temperate, rocky planets around these diminutive stars, we're faced with an apparent logical contradiction - why don't we see a red dwarf in our sky? To address this "Red Sky paradox", we formulate a Bayesian probability function concerning the odds of finding oneself around a F/G/K-spectral type (Sun-like) star. If the development of intelligent life from prebiotic chemistry is a universally rapid and ensured process, the temporal advantage of red dwarfs dissolves softening the Red Sky paradox, but exacerbating the classic Fermi paradox. Otherwise, we find that humanity appears to be a 1-in-100 outlier. Whilst this could be random chance (resolution I), we outline three other non-mutually exclusive resolutions (II-IV) that broadly act as filters to attenuate the suitability of red dwarfs for complex life. Future observations may be able to provide support for some of these. Notably, if surveys reveal a paucity temperate rocky planets around the smallest (and most numerous) red dwarfs then this would support resolution II. As another example, if future characterization efforts were to find that red dwarf worlds have limited windows for complex life due to stellar evolution, this would support resolution III. Solving this paradox would reveal guidance for the targeting of future remote life sensing experiments and the limits of life in the cosmos.
description: Published in PNAS
A Laboratory Study of the Reduction of Iron Oxides by Hydrogen
Creators: name: Wagner, D.
name: Devisme, O.
name: Patisson, F.
name: Ablitzer, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: To reduce the emission of greenhouse gases by the steel industry, particularly for ironmaking, the production of DRI (Direct Reduced Iron) using hydrogen as the reducing gas instead of carbon monoxide is being considered. In this context, the reduction of pure hematite by hydrogen was studied at the laboratory scale, varying the experimental conditions and observing the rate and the course of the reaction. All the reduction experiments were performed in a thermobalance and supplementary characterization methods were used like scanning and transmission electron microscopy, X-ray diffraction, and Mössbauer spectrometry. The influence of rising temperature in the range 550-900 degrees C is to accelerate the reaction; no slowing down was observed, contrary to some literature conclusions. A series of experiments consisted in interrupting the runs before complete conversion, thus enabling the characterization of partially reduced samples. Interpretation confirms the occurrence of three successive and rather separate reduction steps, through magnetite and wustite to iron, and illustrates a clear structural evolution of the samples. Finally, the influence of the sample type was revealed comparing a regular powder, a nanopowder and a sintered sample. The regular powder proved to be the most reactive despite its larger grain size, due to a more porous final structure.