cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A conformally invariant Yang-Mills type energy and equation on 6-manifolds
Creators: name: Gover, A. Rod
name: Peterson, Lawrence J.
name: Sleigh, Callum
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C18, 53C07 (Primary) 58E15, 81T13, 53A55 (Secondary)

description: We define a conformally invariant action S on gauge connections on a closed pseudo-Riemannian manifold M of dimension 6. At leading order this is quadratic in the gauge connection. The Euler-Lagrange equations of S, with respect to variation of the gauge connection, provide a higher-order conformally invariant analogue of the (source-free) Yang-Mills equations. For any gauge connection A on M, we define S(A) by first defining a Lagrangian density associated to A. This is not conformally invariant but has a conformal transformation analogous to a Q-curvature. Integrating this density provides the conformally invariant action. In the special case that we apply S to the conformal Cartan-tractor connection, the functional gradient recovers the natural conformal curvature invariant called the Fefferman-Graham obstruction tensor. So in this case the Euler-Lagrange equations are exactly the "obstruction-flat" condition for 6-manifolds. This extends known results for 4-dimensional pseudo-Riemannian manifolds where the Bach tensor is recovered in the Yang-Mills equations of the Cartan-tractor connection.
description: 24 pages. Uses tensor.sty
title: Προσδιορισμός εντομοαπωθητικών ενώσεων σε υδατικά διαλύματα με χρήση μικροεκχύλισης στερεάς φάσης συζευγμένη με αέρια χρωματογραφία - φασματομετρία μάζας
Creators: name: Ξυνογάλου Μαρία
Publisher: name: Technical University of Crete
Year: 2010

description: Μη διαθέσιμο
Additional file 1 of The impact of age on health utility values for older women with early-stage breast cancer: a systematic review and meta-regression
Creators: name: Wang, Yubo
name: Gavan, Sean P.
name: Steinke, Douglas
name: Cheung, Kwok-Leung
name: Chen, Li-Chia
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy

description: Additional file 1. Appendix 1. PRISMA 2020 Checklist. Appendix 2. Search Strategy for Databases. Appendix 3. Quality Appraisal Tool. Appendix 4. Reasons for Excluding Studies during Database Record Screening. Appendix 5. Data Extraction of the Mean Utility Values.
Maximum Common Subgraph Guided Graph Retrieval: Late and Early Interaction Networks
Creators: name: Roy, Indradyumna
name: Chakrabarti, Soumen
name: De, Abir
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: The graph retrieval problem is to search in a large corpus of graphs for ones that are most similar to a query graph. A common consideration for scoring similarity is the maximum common subgraph (MCS) between the query and corpus graphs, usually counting the number of common edges (i.e., MCES). In some applications, it is also desirable that the common subgraph be connected, i.e., the maximum common connected subgraph (MCCS). Finding exact MCES and MCCS is intractable, but may be unnecessary if ranking corpus graphs by relevance is the goal. We design fast and trainable neural functions that approximate MCES and MCCS well. Late interaction methods compute dense representations for the query and corpus graph separately, and compare these representations using simple similarity functions at the last stage, leading to highly scalable systems. Early interaction methods combine information from both graphs right from the input stages, are usually considerably more accurate, but slower. We propose both late and early interaction neural MCES and MCCS formulations. They are both based on a continuous relaxation of a node alignment matrix between query and corpus nodes. For MCCS, we propose a novel differentiable network for estimating the size of the largest connected common subgraph. Extensive experiments with seven data sets show that our proposals are superior among late interaction models in terms of both accuracy and speed. Our early interaction models provide accuracy competitive with the state of the art, at substantially greater speeds.
title: Προσομοίωση αισθητήρων που χρησιμοποιούν laser (Bragg Sensor) ενσωματωμένους σε ελαστικούς φορείς με τη μέθοδο των πεπερασμένων στοιχείων
Creators: name: Μαρκάκη Ζαχαρένια
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Dynamic Shimming in the Cervical Spinal Cord for Multi-Echo Gradient-Echo Imaging at 3 T
Creators: name: Alonso-Ortiz, E.
name: Papp, D.
name: D'Astous, A.
name: Cohen-Adad, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Signal Processing (eess.SP)
subject: Medical Physics (physics.med-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: Obtaining high quality images of the spinal cord with MRI is difficult, partly due to the fact that the spinal cord is surrounded by a number of structures that have differing magnetic susceptibility. This causes inhomogeneities in the magnetic field, which in turn lead to image artifacts. In order to address this issue, linear compensation gradients can be employed. The latter can be generated using an MRI scanner's first order gradient coils and adjusted on a per-slice basis, in order to correct for through-plane ("z") magnetic field gradients. This approach is referred to as z-shimming. The aim of this study is two-fold. The first aim was to replicate aspects of a previous study wherein z-shimming was found to improve image quality in T2*-weighted echo-planar imaging. Our second aim was to improve upon the z-shimming approach by including in-plane compensation gradients and adjusting the compensation gradients during the image acquisition process so that they take into account respiration-induced magnetic field variations. We refer to this novel approach as realtime dynamic shimming. Measurements performed in a group of 12 healthy volunteers at 3 T show improved signal homogeneity along the spinal cord when using z-shimming. Signal homogeneity may be further improved by including realtime compensation for respiration-induced field gradients and by also doing this for gradients along the in-plane axes.
description: 28 pages, 9 figures
Enumerating Colorings, Tensions and Flows in Cell Complexes
Creators: name: Beck, Matthias
name: Breuer, Felix
name: Godkin, Logan
name: Martin, Jeremy L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A15, 05C15, 11P21, 52C35

description: We study quasipolynomials enumerating proper colorings, nowhere-zero tensions, and nowhere-zero flows in an arbitrary CW-complex $X$, generalizing the chromatic, tension and flow polynomials of a graph. Our colorings, tensions and flows may be either modular (with values in $\mathbb{Z}/k\mathbb{Z}$ for some $k$) or integral (with values in $\{-k+1,\dots,k-1\}$). We obtain deletion-contraction recurrences and closed formulas for the chromatic, tension and flow quasipolynomials, assuming certain unimodularity conditions. We use geometric methods, specifically Ehrhart theory and inside-out polytopes, to obtain reciprocity theorems for all of the aforementioned quasipolynomials, giving combinatorial interpretations of their values at negative integers as well as formulas for the numbers of acyclic and totally cyclic orientations of $X$.
description: 28 pages, 3 figures. Final version, to appear in J. Combin. Theory Series A
Additional file 3 of Development and measurement properties of the AxEL (attitude toward education and advice for low-back-pain) questionnaire
Creators: name: O’Hagan, Edel T.
name: Skinner, Ian W.
name: Jones, Matthew D.
name: Karran, Emma L.
name: Traeger, Adrian C.
name: Cashin, Aidan G.
name: Wand, Benedict M.
name: Schabrun, Siobhan M.
name: O’Neill, Sean
name: Harris, Ian A.
name: McAuley, James H.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 3. Back Beliefs Questionnaire & the Modified Pain Self-Efficacy Questionnaire.
Covering link calculus and the bipolar filtration of topologically slice links
Creators: name: Cha, Jae Choon
name: Powell, Mark
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57N70

description: The bipolar filtration introduced by T. Cochran, S. Harvey, and P. Horn is a framework for the study of smooth concordance of topologically slice knots and links. It is known that there are topologically slice 1-bipolar knots which are not 2-bipolar. For knots, this is the highest known level at which the filtration does not stabilize. For the case of links with two or more components, we prove that the filtration does not stabilize at any level: for any n, there are topologically slice links which are n-bipolar but not (n+1)-bipolar. In the proof we describe an explicit geometric construction which raises the bipolar height of certain links exactly by one. We show this using the covering link calculus. Furthermore we discover that the bipolar filtration of the group of topologically slice string links modulo smooth concordance has a rich algebraic structure.
description: 32 pages, 15 figures; minor changes and referee's comments incorporated; to appear in Geometry and Topology
Effective slip-length tensor for a flow over weakly slipping stripes
Creators: name: Asmolov, Evgeny S.
name: Zhou, Jiajia
name: Schmid, Friederike
name: Vinogradova, Olga I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We discuss the flow past a flat heterogeneous solid surface decorated by slipping stripes. The spatially varying slip length, $b(y)$, is assumed to be small compared to the scale of the heterogeneities, $L$, but finite. For such "weakly" slipping surfaces, earlier analyses have predicted that the effective slip length is simply given by the surface-averaged slip length, which implies that the effective slip-length tensor becomes isotropic. Here we show that a different scenario is expected if the local slip length has step-like jumps at the edges of slipping heterogeneities. In this case, the next-to-leading term in an expansion of the effective slip-length tensor in powers of ${max}\,(b(y)/L)$ becomes comparable to the leading-order term, but anisotropic, even at very small $b(y)/L$. This leads to an anisotropy of the effective slip, and to its significant reduction compared to the surface-averaged value. The asymptotic formulae are tested by numerical solutions and are in agreement with results of dissipative particle dynamics simulations.
description: 11 pages, 4 figures, submitted to Phys. Rev. E
title: Μια εμπειρική εκτίμηση της επίδρασης των τραπεζών στην κερδοφορία μη χρηματοοικονομικών οργανισμών μέσω της συμμετοχής των πρώτων στο ιδιοκτησιακό καθεστώς των δεύτερων
Creators: name: Φαρμακίδη Ζωή
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Neural Estimation of Submodular Functions with Applications to Differentiable Subset Selection
Creators: name: De, Abir
name: Chakrabarti, Soumen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Submodular functions and variants, through their ability to characterize diversity and coverage, have emerged as a key tool for data selection and summarization. Many recent approaches to learn submodular functions suffer from limited expressiveness. In this work, we propose FLEXSUBNET, a family of flexible neural models for both monotone and non-monotone submodular functions. To fit a latent submodular function from (set, value) observations, FLEXSUBNET applies a concave function on modular functions in a recursive manner. We do not draw the concave function from a restricted family, but rather learn from data using a highly expressive neural network that implements a differentiable quadrature procedure. Such an expressive neural model for concave functions may be of independent interest. Next, we extend this setup to provide a novel characterization of monotone α-submodular functions, a recently introduced notion of approximate submodular functions. We then use this characterization to design a novel neural model for such functions. Finally, we consider learning submodular set functions under distant supervision in the form of (perimeter-set, high-value-subset) pairs. This yields a novel subset selection method based on an order-invariant, yet greedy sampler built around the above neural set functions. Our experiments on synthetic and real data show that FLEXSUBNET outperforms several baselines.
Additional file 1 of Association between sociodemographic factors and mobility limitation among older adults: a systematic review and meta-analysis protocol
Creators: name: Onyeso, Ogochukwu Kelechi
name: Odole, Adesola C.
name: Scott, David R.
name: Akinrolie, Olayinka
name: Kalu, Michael E.
name: Awosoga, Oluwagbohunmi A.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Additional file 1. PRISMA-P (Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols) 2015 checklist.
title: Μέθοδος ανάλυσης κραδασμών (vibration analysis) και αποτελέσματα εφαρμογής σε περιστροφικά μηχανήματα πλοίων
Creators: name: Τρουλάκης Νικόλαος
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
title: Παράγοντες επιτυχίας νεοσύστατων εταιριών μια ποιοτική συγκριτική ανάλυση διαφορετικών χωρών
Creators: name: Καλονάκη Ελισάβετ
Publisher: name: Technical University of Crete
Year: 2012

description: Μη διαθέσιμο
Accounting for route overlap in urban and suburban route choice decisions derived from GPS observations
Creators: name: Schüssler, Nadine
name: Axhausen, Kay W.
Publisher: name: ETH Zurich
Year: 2009
Subjects: VERKEHRSVERHALTEN DER BEVÖLKERUNG (VERKEHR UND TRANSPORT)
NAVIGATIONSPLANUNG + ROUTENWAHL (VERKEHR UND TRANSPORT)
STADTVERKEHR + STADTVERKEHRSPLANUNG (VERKEHR UND TRANSPORT)
GLOBAL POSITIONING SYSTEM, GPS + INDOOR GPS (GEODÄSIE)
TRAVELLER BEHAVIOUR (TRANSPORTATION AND TRAFFIC)
ROUTE PLANNING + ROUTE CHOICE (TRANSPORTATION AND TRAFFIC)
URBAN TRANSPORT PLANNING (TRANSPORTATION AND TRAFFIC)
GLOBAL POSITIONING SYSTEM, GPS + INDOOR GPS (GEODESY)
info:eu-repo/classification/ddc/380
info:eu-repo/classification/ddc/550
Commerce, communications, transport
Earth sciences

description: Arbeitsberichte Verkehrs- und Raumplanung, 602
title: Επίδραση του μεγέθους και της ετερογένειας του φορτίου σμεκτιτικών στρωμάτων στην παρασκευή οργανόφιλων μπαντονιτών
Creators: name: Νικητάκη Ουρανία
Publisher: name: Technical University of Crete
Year: 2007

description: φ. 1: Σμεκτιτικές άργιλοι -- Κεφ. 2: Αντιδράσεις μεταξύ σμεκτιτικών αργίλων και οργανικών ενώσεων -- Κεφ. 3: Χαρακτηρισμός σμεκτιτικών αργίλων μέσω οργανικών ενώσεων -- Κεφ. 4: Μέθοδος αλκυλαμμωνίου -- Κεφ. 5: Εφαρμογές οργανόφιλων μπετονιτών -- Κεφ. 6: Περιγραφή πειραματικής διαδικασίας -- Κεφ. 7: Προσδιορισμός φορτίου σμεκτιτικών στρωμάτων -- Κεφ. 8: Μελέτη κινητικών αντιδράσεων ανταλλαγής ιόντων αλκυλαμμωνίου σε μοντμοριλλονίτες
Artigo Evento - 2019 - A influência do S-CRM no relacionamento entre clientes e instituições financeiras
Creators: name: De Muylder, Cristiana
Publisher: name: figshare
Year: 2023
Subjects: International business
Innovation management

description: Nos últimos anos observou-se um crescimento significativo do uso de tecnologia para gestão do relacionamento de clientes por meio de redes sociais (S-CRM) instigando estudos sobre novas formas de relacionamento entre clientes e instituições financeiras. Este novo ambiente de relacionamento estimulou o problema de pesquisa: qual a influência do S-CRM no relacionamento entre clientes e instituições financeiras? Buscou-se analisar a forma de gestão de relacionamento, como as instituições financeiras têm adotado as mídias sociais como ferramenta de comunicação com seus clientes, especificamente o Twitter, e como as mídias sociais refletem na imagem dessas instituições. Além de dados bibliográficos que versam sobre S-CRM, foi utilizada análise de conteúdo para a coleta dos dados, na qual foi feito o monitoramento dos perfis das contas-chave do Twitter, das três maiores instituições financeiras no Brasil. Os resultados revelam que o contexto do S-CRM no mercado financeiro possui características especificas que influenciam o processo de comunicação e relacionamento com os clientes com ênfase na velocidade da comunicação (crítica ou elogio) gerando aspectos positivos ou negativos para a marca das instituições, bem como a busca crescente dos usuários por atendimento através de mídias sociais. A pesquisa contribui com lacunas teórica e metodológica quanto a compreensão do fenômeno e monitoramento de rede social. Na perspectiva aplicada, a pesquisa oferece contribuições para as instituições em geral quanto a compreensão da influência do S-CRM na qualidade do relacionamento com o cliente, ações quanto a imagem da instituição e novos canais de contato e serviços.
On the equivalence of certain quasi-Hermitian varieties
Creators: name: Aguglia, Angela
name: Giuzzi, Luca
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 51E20, 51E05

description: In [A. Aguglia, A. Cossidente, G. Korchmaros, "On quasi-Hermitian varieties", J. Comb. Des. 20 (2012), 433-447] new quasi-Hermitian varieties ${\mathcal M}_{α,β}$ in $\mathrm{PG}(r,q^2)$ depending on a pair of parameters $α,β$ from the underlying field $\mathrm{GF}(q^2)$ have been constructed. In the present paper we determine the projective equivalence classes of such varieties for $r=3$ and $q$ odd.
description: 17 pages; final version
Applications of elliptic operator theory to the isotropic interior transmission eigenvalue problem
Creators: name: Lakshtanov, Evgeny
name: Vainberg, Boris
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The paper concerns the isotropic interior transmission eigenvalue (ITE) problem. This problem is not elliptic, but we show that, using the Dirichlet-to-Neumann map, it can be reduced to an elliptic one. This leads to the discreteness of the spectrum as well as to certain results on possible location of the transmission eigenvalues. If the index of refraction $\sqrt{n(x)}$ is real, we get a result on the existence of infinitely many positive ITEs and the Weyl type lower bound on its counting function. All the results are obtained under the assumption that $n(x)-1$ does not vanish at the boundary of the obstacle or it vanishes identically, but its normal derivative does not vanish at the boundary. We consider the classical transmission problem as well as the case when the inhomogeneous medium contains an obstacle. Some results on the discreteness and localization of the spectrum are obtained for complex valued $n(x)$.
description: A small correction is made in formulas (11), (12) after the paper was published in "Inverse Problems", 29, 2013
Анализ стратегий развития авиационных компаний: международный опыт и российская практика
Creators: name: Филькевич, Игорь
Publisher: name: ООО Цифра
Year: 2023
Subjects: development strategy
aviation industry
business prospects
Russian airlines
international aviation sector
стратегия развития
авиационная отрасль
перспективы деятельности
российские авиакомпании
международный авиационный сектор

description: Международный научно-исследовательский журнал, Выпуск 11 (137) 2023
Noisy metrology beyond the standard quantum limit
Creators: name: Chaves, R.
name: Brask, J. B.
name: Markiewicz, M.
name: Kolodynski, J.
name: Acin, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Parameter estimation is of fundamental importance in areas from atomic spectroscopy and atomic clocks to gravitational wave detection. Entangled probes provide a significant precision gain over classical strategies in the absence of noise. However, recent results seem to indicate that any small amount of realistic noise restricts the advantage of quantum strategies to an improvement by at most a multiplicative constant. Here, we identify a relevant scenario in which one can overcome this restriction and attain superclassical precision scaling even in the presence of uncorrelated noise. We show that precision can be significantly enhanced when the noise is concentrated along some spatial direction, while the Hamiltonian governing the evolution which depends on the parameter to be estimated can be engineered to point along a different direction. In the case of perpendicular orientation, we find superclassical scaling and identify a state which achieves the optimum.
description: Erroneous expressions with inconsistent units have been corrected. 5 pages, 3 figures + Appendix
Strong-field control of plasmonic properties in core-shell nanoparticles
Creators: name: Powell, Jeffrey
name: Li, Jianxiong
name: Summers, Adam
name: Robatjazi, Seyyed Javad
name: Davino, Michael
name: Rupp, Philipp
name: Saydanzad, Erfan
name: Sorensen, Christopher M.
name: Rolles, Daniel
name: Kling, Matthias F.
name: Trallero-Herrero, Carlos
name: Thumm, Uwe
name: Rudenko, Artem
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The strong-field control of plasmonic nanosystems opens up new perspectives for nonlinear plasmonic spectroscopy and petahertz electronics. Questions, however, remain regarding the nature of nonlinear light-matter interactions at sub-wavelength spatial and ultrafast temporal scales. Addressing this challenge, we investigated the strong-field control of the plasmonic response of Au nanoshells with a SiO$_2$ core to an intense laser pulse. We show that the photoelectron energy spectrum from these core-shell nanoparticles displays a striking transition between the weak and strong-field regime. This observed transition agrees with the prediction of our modified Mie-theory simulation that incorporates the nonlinear dielectric nanoshell response. The demonstrated intensity-dependent optical control of the plasmonic response in prototypical core-shell nanoparticles paves the way towards ultrafast switching and opto-electronic signal modulation with more complex nanostructures.
Conformational variability in proteins bound to single-stranded DNA: a new benchmark for new docking perspectives
Creators: name: Mias-Lucquin, Dominique
name: de Beauchene, Isaure Chauvot
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: We explored the Protein DataBank (PDB) to collect protein-ssDNA structures and create a multiconformational docking benchmark including both bound and unbound protein structures. Due to ssDNA high flexibility when not bound, no ssDNA unbound structure is included in the benchmark. For the 91 sequence-identity groups identified as bound-unbound structures of the same protein, we studied the conformational changes in the protein induced by the ssDNA binding. Moreover, based on several bound or unbound protein structures in some groups, we also assessed the intrinsic conformational variability in either bound or unbound conditions, and compared it to the supposedly binding-induced modifications. To illustrate a use case of this benchmark, we performed docking experiments using ATTRACT docking software. This benchmark is, to our knowledge, the first one made to peruse available structures of ssDNA-protein interactions to such an extent, aiming to improve computational docking tools dedicated to this kind of molecular interactions.
Joint effect of triclosan and copper nanoparticles on wastewater biological nutrient removal
Creators: name: Chen, Hong
name: Cheng, Yuying
name: Meng, Di
name: Xue, Gang
name: Jiang, Mingji
name: Li, Xiang
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Triclosan (TCS) is widely used in household and personal care products, and its release into wastewater might have impact on wastewater biological treatment for its antibacterial property. Besides, emerging pollutant such as copper nanoparticles (CuNPs) will also release from nanoparticle-containing products, showing a joint effect with TCS on biological nutrient removal. The TCS of 1 and 10 mg/L inhibited the nitrosification and nitrification stage, and the first step of denitrification was suppressed as well, causing a decline in final TN removal efficiency. Additionally, the phosphorus uptake was inhibited seriously, leading to a remarkable decrease in phosphorus removal efficiency. When they were co-existed, the TCS concentration decreased due to the absorption by CuNPs, and the released Cu2+ from CuNPs increased. Further investigation revealed that when 5 mg/L CuNPs and 1 mg/L TCS were immediately added to the activated sludge, the final joint toxicity was similar to the individual effect of 1 mg/L TCS, while 10 mg/L CuNPs contributed to the final stronger toxicity. When TCS was sufficiently reacted with CuNPs in wastewater, their final toxicity to activated sludge was enhanced because the extent of toxicity relief caused by decrease in TCS concentration was less than the degree of deteriorating effect due to the promotion of Cu2+ release from CuNPs.
A note on column subset selection
Creators: name: Youssef, Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Given a matrix U, using a deterministic method, we extract a "large" submatrix of U'(whose columns are obtained by normalizing those of U) and estimate its smallest and largest singular value. We apply this result to the study of contact points of the unit ball with its maximal volume ellipsoid. We consider also the paving problem and give a deterministic algorithm to partition a matrix into almost isometric blocks recovering previous results of Bourgain-Tzafriri and Tropp. Finally, we partially answer a question raised by Naor about finding an algorithm in the spirit of Batson-Spielman-Srivastava's work to extract a "large" square submatrix of "small" norm.
description: 12 pages International Mathematics Research Notices, 2013
Additional file 2 of Association between sociodemographic factors and mobility limitation among older adults: a systematic review and meta-analysis protocol
Creators: name: Onyeso, Ogochukwu Kelechi
name: Odole, Adesola C.
name: Scott, David R.
name: Akinrolie, Olayinka
name: Kalu, Michael E.
name: Awosoga, Oluwagbohunmi A.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Additional file 2. MEDLINE search strategy for the systematic review.
title: Χαρακτηρισμός καυσίμων από ενεργειακές καλλιέργειες αγριαγκινάρας, καλαμιού και switch grass στην Ελλάδα
Creators: name: Τοπούζη Βικτώρια
Publisher: name: Technical University of Crete
Year: 2007

description: Μη διαθέσιμο
Clustering of Inertial Particles in Turbulent Flow Through a Porous Unit Cell
Creators: name: Apte, Sourabh V.
name: Oujia, Thibault
name: Matsuda, Keigo
name: Kadoch, Benjamin
name: He, Xiaoliang
name: Schneider, Kai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Direct numerical simulation is used to investigate effects of turbulent flow in the confined geometry of a face-centered cubic porous unit cell on the transport, clustering, and deposition of fine particles at different Stokes numbers ($St = 0.01, 0.1, 0.5, 1, 2$) and at a pore Reynolds number of 500. Particles are advanced using one-way coupling and collision of particles with pore walls is modeled as perfectly elastic with specular reflection. Tools for studying inertial particle dynamics and clustering developed for homogeneous flows are adapted to take into account the embedded, curved geometry of the pore walls. The pattern and dynamics of clustering are investigated using the volume change of Voronoi tesselation in time to analyze the divergence and convergence of the particles. Similar to the case of homogeneous, isotropic turbulence, the cluster formation is present at large volumes, while cluster destruction is prominent at small volumes and these effects are amplified with Stokes number. However, unlike homogeneous, isotropic turbulence, formation of large number of very small volumes was observed at all Stokes numbers and is attributed to the collision of particles with the pore wall. Multiscale wavelet analysis of the particle number density showed peak of clustering shifts towards larger scales with increase in Stokes number. Scale-dependent skewness and flatness quantify the intermittent void and cluster distribution, with cluster formation observed at small scales for all Stokes numbers, and void regions at large scales for large Stokes numbers.
Shepherding Heterogeneous Flock with Model-Based Discrimination
Creators: name: Fujioka, Anna
name: Ogura, Masaki
name: Wakamiya, Naoki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: The problem of guiding a flock of agents to a destination by the repulsion forces exerted by a smaller number of external agents is called the shepherding problem. This problem has attracted attention due to its potential applications, including diverting birds away for preventing airplane accidents, recovering spilled oil in the ocean, and guiding a swarm of robots for mapping. Although there have been various studies on the shepherding problem, most of them place the uniformity assumption on the dynamics of agents to be guided. However, we can find various practical situations where this assumption does not necessarily hold. In this paper, we propose a shepherding method for a flock of agents consisting of normal agents to be guided and other variant agents. In this method, the shepherd discriminates normal and variant agents based on their behaviors' deviation from the one predicted by the potentially inaccurate model of the normal agents. As for the discrimination process, we propose two methods using static and dynamic thresholds. Our simulation results show that the proposed methods outperform a conventional method for various types of variant agents.
description: 19 pages, 6 figures, accepted for publication
Linearization of Poisson groupoids
Creators: name: Smilde, Wilmer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 58H05, 53D17

description: Motivated by a search for Lie group structures on groups of Poisson diffeomorphisms [24], we investigate linearizability of Poisson structures of Poisson groupoids around the unit section. After extending the Lagrangian neighbourhood theorem to the setting of cosymplectic Lie algebroids, we establish that dual integrations of triangular bialgebroids are always linearizable. Additionally, we show that the (non-dual) integration of a triangular Lie bialgebroid is linearizable whenever the $r$-matrix is of so-called cosymplectic type. The proof relies on the integration of a triangular Lie bialgebroid to a symplectic LA-groupoid, and in the process we define interesting new examples of double Lie algebroids and LA-groupoids. We also show that the product Poisson groupoid can only be linearizable when the Poisson structure on the unit space is regular.
description: 36 pages
Functions with No Unbounded Fatou Components
Creators: name: Kaur, Ramanpreet
Publisher: name: arXiv
Year: 2021
Subjects: subject: Complex Variables (math.CV)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: For a transcendental entire function, a partial affirmative answer to Baker's question on the boundedness of its Fatou components is given. In addition, we have addressed Wang's question on Fejér gaps. Certain results about functions with Fabry gaps and of infinite order have also been generalized.
Band gap enhancement in periodic frames using hierarchical structures
Creators: name: Poggetto, Vinícius F. Dal
name: Bosia, Federico
name: Miniaci, Marco
name: Pugno, Nicola M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: The quest for novel designs for lightweight phononic crystals and elastic metamaterials with wide lowfrequency band gaps has proven to be a significant challenge in recent years. In this context, lattice-type materials represent a promising solution, providing both lightweight properties and significant possibilities of tailoring mechanical and dynamic properties. Additionally, lattice structures also enable the generation of hierarchical architectures, in which basic constitutive elements with different characteristic length scales can be combined. In this work, we propose 1D- and 2D-periodic phononic crystals made of spatial frames inspired by a spider web-based architecture. Specifically, hierarchical plane structures based on a combination of frames with a variable cross-section are proposed and exploited to open and enhance band gaps with respect to their non-hierarchical counterparts. Our results show that hierarchy is effective in broadening existing band gaps as well as opening new full band gaps in non-hierarchical periodic structures.
Ryuichi Kitamura 1949-2009: a tribute
Creators: name: Mokhtarian, Patricia L.
name: Axhausen, Kay W.
Publisher: name: ETH Zurich
Year: 2009
Subjects: VERKEHRSPLANUNG (VERKEHR UND TRANSPORT)
Kitamura, Ryuichi
FESTSCHRIFTEN, GEDENKSCHRIFTEN FÜR PERSONEN (DOKUMENTENTYP)
MOTORFAHRZEUGVERKEHR (VERKEHR UND TRANSPORT)
VERKEHRSVERHALTEN DER BEVÖLKERUNG (VERKEHR UND TRANSPORT)
NACHHALTIGKEIT (UMWELTSCHUTZ)
ASIEN
TRANSPORT PLANNING (TRANSPORTATION AND TRAFFIC)
PUBLICATIONS IN HONOUR OF INDIVIDUALS, ANNIVERSARY AND COMMEMORATIVE PUBLICATIONS FOR INDIVIDUALS (DOCUMENT TYPE)
MOTOR TRAFFIC (TRANSPORTATION AND TRAFFIC)
TRAVELLER BEHAVIOUR (TRANSPORTATION AND TRAFFIC)
SUSTAINABILITY (ENVIRONMENTAL PROTECTION)
ASIA
info:eu-repo/classification/ddc/380
Commerce, communications, transport

description: Working Paper / IVT, 600
title: Γεωτεχνικός χαρακτηρισμός βραχομαζών με βάση τη γεωστατιστική ανάλυση δεδομένων από γεωτρήσεις δειγματοληψίας και από μηχανές ολομέτωπης κοπής TBM
Creators: name: Ξηρουδάκης Γεώργιος
Publisher: name: Technical University of Crete
Year: 2007

description: φ. 1: Εισαγωγή -- Κεφ. 2: Γεωστατιστική επεξεργασία --Κεφ. 3: Περιγραφή γεωστατιστικού αλγορίθμου KRIGSTATv2.0 --Κεφ. 4: Χαρακτηριστικά λειτουργίας TBM --Κεφ. 5: Επεξεργασία δεδομένων από εξόρυξη σηράγγων με TBM
Additional file 3 of Association between sociodemographic factors and mobility limitation among older adults: a systematic review and meta-analysis protocol
Creators: name: Onyeso, Ogochukwu Kelechi
name: Odole, Adesola C.
name: Scott, David R.
name: Akinrolie, Olayinka
name: Kalu, Michael E.
name: Awosoga, Oluwagbohunmi A.
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Additional file 3. Data extraction sheet.
title: Σταθεροποίηση μικτών θειούχων αποβλήτων με χρήση προσθετικών
Creators: name: Μανουσάκη Κλειώ
Publisher: name: Technical University of Crete
Year: 2007

description: φ. 1: Εισαγωγή -- Κεφ. 2: Όξινη απορροή μεταλλείων -- Κεφ. 3: Σταθεροποίηση / στερεοποίηση αποβλήτων -- Κεφ. 4: Χαρακτηρισμός υλικών -- Κεφ. 5: Πειραματικός σχεδιασμός
Noise-induced Regime Shifts: A Quantitative Characterization
Creators: name: Ghosh, Sayantari
name: Pal, Amit Kumar
name: Bose, Indrani
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Diverse complex dynamical systems are known to exhibit abrupt regime shifts at bifurcation points of the saddle-node type. The dynamics of most of these systems, however, have a stochastic component resulting in noise driven regime shifts even if the system is away from the bifurcation points. In this paper, we propose a new quantitative measure, namely, the propensity transition point as an indicator of stochastic regime shifts. The concepts and the methodology are illustrated for the one-variable May model, a well-known model in ecology and the genetic toggle, a two-variable model of a simple genetic circuit. The general applicability and usefulness of the method for the analysis of regime shifts is further demonstrated in the case of the mycobacterial switch to persistence for which experimental data are available.
description: 10 Pages, 9 figures, revtex4-1, published version
Large-batch Optimization for Dense Visual Predictions
Creators: name: Xue, Zeyue
name: Liang, Jianming
name: Song, Guanglu
name: Zong, Zhuofan
name: Chen, Liang
name: Liu, Yu
name: Luo, Ping
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Training a large-scale deep neural network in a large-scale dataset is challenging and time-consuming. The recent breakthrough of large-batch optimization is a promising way to tackle this challenge. However, although the current advanced algorithms such as LARS and LAMB succeed in classification models, the complicated pipelines of dense visual predictions such as object detection and segmentation still suffer from the heavy performance drop in the large-batch training regime. To address this challenge, we propose a simple yet effective algorithm, named Adaptive Gradient Variance Modulator (AGVM), which can train dense visual predictors with very large batch size, enabling several benefits more appealing than prior arts. Firstly, AGVM can align the gradient variances between different modules in the dense visual predictors, such as backbone, feature pyramid network (FPN), detection, and segmentation heads. We show that training with a large batch size can fail with the gradient variances misaligned among them, which is a phenomenon primarily overlooked in previous work. Secondly, AGVM is a plug-and-play module that generalizes well to many different architectures (e.g., CNNs and Transformers) and different tasks (e.g., object detection, instance segmentation, semantic segmentation, and panoptic segmentation). It is also compatible with different optimizers (e.g., SGD and AdamW). Thirdly, a theoretical analysis of AGVM is provided. Extensive experiments on the COCO and ADE20K datasets demonstrate the superiority of AGVM. For example, it can train Faster R-CNN+ResNet50 in 4 minutes without losing performance. AGVM enables training an object detector with one billion parameters in just 3.5 hours, reducing the training time by 20.9x, whilst achieving 62.2 mAP on COCO. The deliverables are released at https://github.com/Sense-X/AGVM.
description: 23 pages, 6 figures
Fast Rise of "Neptune-Size" Planets ($4-8 R_{\rm Earth}$) from $P\sim10$ to $\sim250$ days -- Statistics of Kepler Planet Candidates Up to $\sim 0.75 {\rm AU}$
Creators: name: Dong, Subo
name: Zhu, Zhaohuan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We infer the period ($P$) and size ($R_p$) distribution of Kepler transiting planet candidates with $R_p\ge 1 R_{\rm Earth}$ and $P < 250$ days hosted by solar-type stars. The planet detection efficiency is computed by using measured noise and the observed timespans of the light curves for $\sim 120,000$ Kepler target stars. We focus on deriving the shape of planet period and radius distribution functions. We find that for orbital period $P>10$ days, the planet frequency d$N_p$/d$\log$P for "Neptune-size" planets ($R_p = 4-8 R_{\rm Earth}$) increases with period as $\propto P^{0.7\pm0.1}$. In contrast, d$N_p$/d$\log$P for "super-Earth-size" ($2-4 R_{\rm Earth}$) as well as "Earth-size" ($1-2 R_{\rm Earth}$) planets are consistent with a nearly flat distribution as a function of period ($\propto P^{0.11\pm0.05}$ and $\propto P^{-0.10\pm0.12}$, respectively), and the normalizations are remarkably similar (within a factor of $\sim 1.5$ at $50 $ days). Planet size distribution evolves with period, and generally the relative fractions for big planets ($\sim 3-10 R_{\rm Earth}$) increase with period. The shape of the distribution function is not sensitive to changes in selection criteria of the sample. The implied nearly flat or rising planet frequency at long period appears to be in tension with the sharp decline at $\sim 100$ days in planet frequency for low mass planets (planet mass $m_p < 30 M_{\rm Earth}$) recently suggested by HARPS survey. Within $250$ days, the cumulative frequencies for Earth-size and super-Earth-size planets are remarkably similar ($\sim 28 %$ and $25%$), while Neptune-size and Jupiter-size planets are $\sim 7%$, and $\sim 3%$, respectively. A major potential uncertainty arises from the unphysical impact parameter distribution of the candidates.
description: Accepted by ApJ
title: Περιβαλλοντικός έλεγχος από τη θερμική αξιοποίηση της βιομάζας στο βιομηχανικό τομέα
Creators: name: Μεθυμάκη Ιφιγένεια
Publisher: name: Technical University of Crete
Year: 2007

description: φ. 2: Αέριες εκπομπές -- Κεφ. 3: Στερεά απόβλητα -- Κεφ. 4: Υγρά απόβλητα
Magnetic test of chiral dynamics in QCD
Creators: name: Simonov, Yu. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Strong magnetic fields in the range $ eB\gg m^2_π$ effectively probe internal quark structure of chiral mesons and test basic parameters of chiral theory, such as $\lan\bar q q\ran, f_π$. We argue on general grounds that $\lan\bar q q\ran$ should grow linearly with $eB$ when charged quark degrees of freedom come into play. To make explicit estimates we extend previously formulated chiral theory, including quark degrees of freedom, to the case of strong magnetic fields and show that the quark condensate $|\lan \bar q q\ran|_{u,d}$ grows quadratically with $eB$ for $eB\la 0.2$ GeV$^2$ and linearly for higher field values. These results agree quantitatively with recent lattice data and differ from $χPT$ predictions.
description: 14 pages,1 figure
Observation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 TeV with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This paper presents a measurement of the electroweak production of two jets in association with a $Zγ$ pair, with the $Z$ boson decaying into two neutrinos. It also presents a search for invisible or partially invisible decays of a Higgs boson with a mass of 125 GeV produced through vector-boson fusion with a photon in the final state. These results use data from LHC proton-proton collisions at $\sqrt{s}$ = 13 TeV collected with the ATLAS detector and corresponding to an integrated luminosity of 139 fb$^{-1}$. The event signature, shared by all benchmark processes considered for the measurements and searches, is characterized by a significant amount of unbalanced transverse momentum and a photon in the final state, in addition to a pair of forward jets. Electroweak $Zγ$ production in association with two jets is observed in this final state with a significance of 5.2 (5.1 expected) standard deviations. The measured fiducial cross-section for this process is 1.31$\pm$0.29 fb. An observed (expected) upper limit of 0.37 ($0.34^{+0.15}_{-0.10}$) at 95% confidence level is set on the branching ratio of a 125 GeV Higgs boson to invisible particles, assuming the Standard Model production cross-section. The signature is also interpreted in the context of decays of a Higgs boson into a photon and a dark photon. An observed (expected) 95% CL upper limit on the branching ratio for this decay is set at 0.018 ($0.017^{+0.007}_{-0.005}$), assuming the Standard Model production cross-section for a 125 GeV Higgs boson.
description: 58 pages in total, author list starting page 42, 9 figures, 7 tables. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2021-17/
title: Κατανομή ορυκτολογικών φάσεων σε πελαγικά ιζήματα με υδρίτες της περιοχής ηφαιστείων λάσπης Αναξίμανδρος στην ανατολική Μεσόγειο
Creators: name: Καραντζή Αικατερίνη
Publisher: name: Technical University of Crete
Year: 2007

description: φ. 1: Γενικά στοιχεία υδριτών -- Κεφ. 2: Περιοχής μελέτης -- Κεφ. 3: Μεθοδολογία -- Κεφ. 4: Αργιλικά ορυκτά -- Κεφ. 5: Δείκτης Kuebler
title: Προτάσεις γεωτρητικού προγράμματος σε ενεργό λατομικό χώρο με χρήση χωρικών γεωλογικών στοιχείων
Creators: name: Παναγόπουλος Γεώργιος
Publisher: name: Technical University of Crete
Year: 2007

description: φ. 1: Εβαπορίτες -- Κεφ. 2: Γεωλογική επισκόπηση -- Κεφ. 3: Τρισδιάστατη μοντελοποίηση -- Κεφ. 4: Περιγραφή εργασιών - αποτελέσματα
title: Διαχείριση επαγγελματικής ασφάλειας και υγιεινής σε λατομεία αδρανών υλικών
Creators: name: Ασπιρτάκης Ιωάννης Β.
Publisher: name: Technical University of Crete
Year: 2007

description:  Εισαγωγή στην επαγγελματική υγιεινή & ασφάλεια -- 2. Μεθοδολογία για τη διαχείριση της επαγγελματικής υγιεινής & ασφάλειας -- 3. Υγιεινή & ασφάλεια στα λατομεία αδρανών υλικών -- 4. Καλές πρακτικές εργασίας -- 5. Μελέτη διαχείρισης επαγγελματικών κινδύνων στην εταιρία "Λατομεία Γουρνών ΑΕ"