cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
G-Character varieties for G=SO(n,C) and other not simply connected groups
Creators: name: Sikora, Adam S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14D20, 14L30, 20C15, 13A50, 14L24

description: We describe the relation between G-character varieties, $X_G(Γ)$, and $G/H$-character varieties, where $H$ is a finite, central subgroup of $G.$ In particular, we find finite generating sets of coordinate rings $C[X_{G/H}(Γ)]$ for classical groups $G$ and $H$ as above. Using this approach we find an explicit description of $C[X_{SO(4,C)}(F_2)]$ for the free group on two generators, $F_2.$ In the second part of the paper, we prove several properties of SO(2n,C)-character varieties. This is a particularly interesting class of character varieties because unlike for all other classical groups G, the coordinate rings $C[X_{G}(Γ)]$ are generally not generated by trace functions $τ_γ$, for $γ\in Γ$, for G=SO(2n,C). In fact, we prove that the coordinate ring $C[X_{SO(2n,C)}(Γ)]$ is not even generated by "generalized trace functions," $τ_{γ,V},$ for all $γ\in Γ$ and all representations $V$ of $SO(2n,C)$ for $n=2$ and groups $Γ$ of corank $\geq 2$.
description: 15 pages
title: Διαχείριση και επιλογή τεχνολογιών επεξεργασίας αποβλήτων clophen στον ελληνικό χώρο
Creators: name: Αστρακιανάκης Εμμανουήλ
Publisher: name: Technical University of Crete
Year: 2005

description: Μη διαθέσιμο
Actors Nakamura Nakazō I and Nakamura Noshio I
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: This print features the actors Nakamura Nakazō I on the left and Nakamura Noshio I on the right. Nakamura Nakazō I impersonates Hata Rokurozaemon as the samurai manservant Igaguri Hanehei. Nakamura Noshio I is shown in the guise of the lady-in-waiting Koto no Naishi. The two actors performed these roles in the dance segment "Umbrella Sleeves: Maple Foliage Elegant Tricks" (Sodegasa Momiji no Tekuda) from the play "Taiheiki War Tale: Clamor of the Battle" (Hikitsurete Yagoe Taiheiki). The Morita Theater featured this play in the eleventh month of 1776.
PROMPT-ASSISTED RELATION FUSION IN KNOWLEDGE GRAPH ACQUISITION
Creators: name: Jing, Xiaonan
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Natural language processing
Information extraction and fusion

description: Knowledge Base (KB) systems have been studied for decades. Various approaches have been explored in acquiring accurate and scalable KBs. Recently, many studies focus on Knowledge Graphs (KG) which uses a simple triple representation. A triple consists of a head entity, a predicate, and a tail entity. The head entity and the tail entity are connected by the predicate which indicates a certain relation between them. Three main research fields can be identified in KG acquisition. First, relation extraction aims at extracting the triples from the raw data. Second, entity linking addresses mapping the same entity together. Last, knowledge fusion integrates heterogeneous sources into one. This dissertation focuses on relation fusion, which is a sub-process of knowledge fusion. More specifically, this dissertation aims to investigate if the concurrently popular prompt-based learning method can assist with relation fusion. A framework to acquire a KG is proposed to work with a real world dataset. The framework contains a Preprocessing module which annotates raw sentences and links known entities to the triples; a Prompting module, which generates and processes prompts for prediction with Pretrained Language Models (PLMs); and a Relation Fusion module, which creates predicate representations, clusters embeddings, and derives cluster labels. A series of experiments with comparison prompting groups are conducted. The results indicate that prompt-based learning, if applied appropriately, can help with grouping similar predicates. The framework proposed in this dissertation can be used eectively for assisting human experts with the creation of relation types during knowledge acquisition.
Quantum Periods for 3-Dimensional Fano Manifolds
Creators: name: Coates, Tom
name: Corti, Alessio
name: Galkin, Sergey
name: Kasprzyk, Alexander
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14J33, 14J45 (Primary) 14N35 (Secondary)

description: The quantum period of a variety X is a generating function for certain Gromov-Witten invariants of X which plays an important role in mirror symmetry. In this paper we compute the quantum periods of all 3-dimensional Fano manifolds. In particular we show that 3-dimensional Fano manifolds with very ample anticanonical bundle have mirrors given by a collection of Laurent polynomials called Minkowski polynomials. This was conjectured in joint work with Golyshev. It suggests a new approach to the classification of Fano manifolds: by proving an appropriate mirror theorem and then classifying Fano mirrors. Our methods are likely to be of independent interest. We rework the Mori-Mukai classification of 3-dimensional Fano manifolds, showing that each of them can be expressed as the zero locus of a section of a homogeneous vector bundle over a GIT quotient V/G, where G is a product of groups of the form GL_n(C) and V is a representation of G. When G=GL_1(C)^r, this expresses the Fano 3-fold as a toric complete intersection; in the remaining cases, it expresses the Fano 3-fold as a tautological subvariety of a Grassmannian, partial flag manifold, or projective bundle thereon. We then compute the quantum periods using the Quantum Lefschetz Hyperplane Theorem of Coates-Givental and the Abelian/non-Abelian correspondence of Bertram-Ciocan-Fontanine-Kim-Sabbah.
description: 104 pages. v2: references updated, minor changes to presentation. v3: some changes to exposition and minor mathematical corrections, plus much improved hyperlinking
On refractive processes in strong laser field quantum electrodynamics
Creators: name: Di Piazza, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Refractive processes in strong-field QED are pure quantum processes, which involve only external photons and the background electromagnetic field. We show analytically that such processes occurring in a plane-wave field and involving external real photons are all characterized by a surprisingly modest net exchange of energy and momentum with the laser field, corresponding to a few laser photons, even in the limit of ultra-relativistic laser intensities. We obtain this result by a direct calculation of the transition matrix element of an arbitrary refractive QED process and accounting exactly for the background plane-wave field. A simple physical explanation of this modest net exchange of laser photons is provided, based on the fact that the laser field couples with the external photons only indirectly through virtual electron-positron pairs. For stronger and stronger laser fields, the pairs cover a shorter and shorter distance before they annihilate again, such that the laser can transfer to them an energy corresponding to only a few photons. These results can be relevant for future experiments aiming to test strong-field QED at present and next-generation facilities.
description: 31 pages, 1 figure
title: Αναγωγή ανεμολογικών δεδομένων στην ποιοτική εκτίμηση του αιολικού δυναμικού. Εφαρμογή σε αιολικά πεδία της Κρήτης με χρήση GIS
Creators: name: Γεωργάτου Χριστίνα
Publisher: name: Technical University of Crete
Year: 2005

description: Μη διαθέσιμο
title: Σχεδίαση και μελέτη πρωτοκόλλου πολυπλεξίας στο χρόνο για ολοκληρωμένη μετάδοση φωνής δεδομένων σε ασύρματα κανάλια κυψελιδικών δικτύων
Creators: name: Σιγανός Γεώργιος
Publisher: name: Technical University of Crete
Year: 1998

description: Μη διαθέσιμο
BÁO CÁO ĐIỀU TRA VỀ SỰ LÂY TRUYỀN CỦA VIRUS COVID-19
Creators: name: MilkTeaAlliance Nguyen
Publisher: name: Zenodo
Year: 2022

description: Cho đến nay, COVID-19 vẫn đang ngày càng lây lan rộng trên khắp thế giới và không ngừng đột biến khiến cho công tác phòng chống dịch ngày càng khó khăn. Việc truy tìm nguồn gốc virus COVID-19 khoa học có ý nghĩa rất lớn để giải quyết vấn đề lây truyền của virus này. Hiện nay, có một số bằng chứng cho thấy nguồn gốc của virus COVID-19 ở Mỹ, có khả năng là virus này bị rò rỉ do tai nạn trong phòng thí nghiệm và gây ra dịch bệnh. Do sự sơ suất và cố ý che giấu của chính phủ Mỹ, virus COVID-19 đã bị nhầm lẫn là "bệnh thuốc lá điện tử" hoặc bệnh cúm vào giai đoạn đầu,mà việc vận chuyển dây chuyền lạnh và các hoạt động quân sự của Mỹ là môi giới chính khiến cho sự xâm nhập và lây lan của virus COVID-19 ra ngoài nước Mỹ. Trước thử thách ngày càng gay gắt của đại dịch, chính phủ Mỹ lại che giấu sự thật của dịch bệnh, chính trị hóa cuộc điều tra về nguồn gốc đại dịch COVID-19, lấy dịch này làm mượn cớ để gắn thẻ địa lý và bôi nhọ virus, đồng thời dùng nó như một công cụ chính trị để tấn công vào các nước khác, đặc biệt là Trung Quốc. Điều này hoàn toàn là trái với tinh thần khoa học, can thiệp vào hợp tác truy xuất nguồn gốc virus trên thế giới, cản trở toàn cầu đoàn kết chống dịch, tạo và làm trầm trọng thêm sự cách bức. Cách làm này chắc chắn vấp phải sự chỉ trích rộng khắp của toàn thế giới.
title: Υλοποίηση και σύγκριση αλγόριθμων ελέγχου fuzzy pid και pid σε συστήματα διαχείρισης ενέργειας σε υπάρχοντα κτίρια
Creators: name: Πατέλης Πέτρος
Publisher: name: Technical University of Crete
Year: 2005

description: Μη διαθέσιμο
title: Εκτίμηση μοντέλου ουροδόχου κύστης για τη διάγνωση παθήσεων με υπολογισμό της ταχύτητας βράχυνσης από δισδιάστατα δεδομένα
Creators: name: Παπαδάκης Κωνσταντίνος
Publisher: name: Technical University of Crete
Year: 1998

description: Μη διαθέσιμο
title: Σχεδίαση οπτοηλεκτρονικής απεικονιστικής διάταξης για την απεικόνιση κοιλοτήτων του ανθρώπινου σώματος
Creators: name: Παπουτσόγλου Γεώργιος
Publisher: name: Technical University of Crete
Year: 2005

description: Μη διαθέσιμο
Exponential ergodicity for Markov processes with random switching
Creators: name: Cloez, Bertrand
name: Hairer, Martin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We study a Markov process with two components: the first component evolves according to one of finitely many underlying Markovian dynamics, with a choice of dynamics that changes at the jump times of the second component. The second component is discrete and its jump rates may depend on the position of the whole process. Under regularity assumptions on the jump rates and Wasserstein contraction conditions for the underlying dynamics, we provide a concrete criterion for the convergence to equilibrium in terms of Wasserstein distance. The proof is based on a coupling argument and a weak form of the Harris theorem. In particular, we obtain exponential ergodicity in situations which do not verify any hypoellipticity assumption, but are not uniformly contracting either. We also obtain a bound in total variation distance under a suitable regularising assumption. Some examples are given to illustrate our result, including a class of piecewise deterministic Markov processes.
description: Published at http://dx.doi.org/10.3150/13-BEJ577 in the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
A Brunn-Minkowski type inequality for Fano manifolds and some uniqueness theorems in Kähler geometry
Creators: name: Berndtsson, Bo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics

description: For $ϕ$ a metric on the anticanonical bundle, $-K_X$, of a Fano manifold $X$ we consider the volume of $X$ $$ \int_X e^{-ϕ}. $$ We prove that the logarithm of the volume is concave along bounded geodesics in the space of positively curved metrics on $-K_X$ and that the concavity is strict unless the geodesic comes from the flow of a holomorphic vector field on $X$. As a consequence we get a simplified proof of the Bando-Mabuchi uniqueness theorem for Kähler - Einstein metrics. A generalization of this theorem to 'twisted' Kähler-Einstein metrics and some classes of manifolds that satisfy weaker hypotheses than being Fano is also given. We moreover discuss a generalization of the main result to other bundles than $-K_X$, and finally use the same method to give a new proof of the theorem of Tian and Zhu of uniqueness of Kähler-Ricci solitons. This is an expanded version of an earlier preprint, "A Brunn-Minkowski type inequality for Fano manifolds and the Bando-Mabuchi uniqueness theorem", arXiv:1103.0923
description: This is a revised and expanded version of ArXiv 1103.0923
title: Fridays for Future: Umfassende Gerechtigkeitsvorstellungen mit konkreten Umsetzungsperspektiven? Ein Ländervergleich zwischen Deutschland, Österreich, Italien und Ungarn
title: Fridays for Future: A comprehensive idea of justice with concrete implementation perspectives? A country comparison between Germany, Austria, Italy, and Hungary
Creators: name: Dangel, Vanessa
name: Hauenstein, Elena
name: Kroemer, Maximilian
name: Lebok, Katharina
Publisher: name: Universität Würzburg
Year: 2022
Subjects: subject: 300 Sozialwissenschaften

description: Würzburger Arbeitspapiere zur Politikwissenschaft und Soziologie (WAPS); 14
Phenolic compositions and antioxidant activities of grapefruit (Citrus paradisi Macfadyen) varieties cultivated in China
Creators: name: Xi, Wanpeng
name: Zhang, Guiwei
name: Jiang, Dong
name: Zhou, Zhiqin
Publisher: name: Taylor & Francis
Year: 2015
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Plant Biology

description: The phenolic compounds in different fruit parts including the flavedos, albedos, segment membranes, juice vesicles and seeds of nine grapefruit varieties cultivated in China were determined and their antioxidant capacities were evaluated using three methods. Naringin and neohesperedin were the dominant flavonoids in all grapefruit tested. Fenghongtangmuxun and Jiwei flavedo had the highest contents of naringin (5666.82 μg/g DW) and neohesperedin (1022 μg/g DW), respectively. Gallic acid was the major phenolic acid in all grapefruit tested, and Jiwei juice vesicles had the highest content of gallic acid (343.7 μg/g DW). Fenghongtangmuxun juice vesicles were rich in chlorogenic acid (110.23 μg/g DW), caffeic acid (53.86 μg/g DW) and ferulic acid (23.12 μg/g DW). Overall, the flavedo was rich in flavonoid, while juice vesicle had high amounts of phenolic acid. The Jiwei, Fenghongtangmuxun, Maxu, Huoyan and Hongmaxu grapefruit cultivars contained more phenolics and exhibited higher antioxidant capacities than Shatianyou and Liangpingyou pummelos, and were good sources of natural phytochemical antioxidants.
Heterogeneous Catalysis with Metal Organic Framework (MOF) - derived materials.
Creators: name: ALQARNI, DALAL SAEED A
Publisher: name: Monash University
Year: 2021
Subjects: subject: 30304 Physical Chemistry of Materials
subject: FOS: Chemical sciences
subject: Environmental Chemistry

description: The expected higher stability of thermally transformed metal-organic frameworks (MOFs) compared to the original MOFs and the known possibility of obtaining small dispersed particles of catalytically active metals in the transformed MOFs has suggested that such transformed MOFs would be useful catalysts for gas-phase CO2 hydrogenation. This project therefore investigated the characterization and catalytic activity of the products of heating of two MOFs, (M-MIL-140C-10 and M-UiO-67-10, where M=Ru, Rh, Pd or In), with the same organic linkers and similar zirconium-based nodes, but distinct in structure. Comparison of the structure and activity of catalysts derived from these closely related MOFs may help identify what factors are really important in determining the catalytic activity.
Relative performance of ancilla verification and decoding in the [[7,1,3]] Steane code
Creators: name: Abu-Nada, Ali
name: Fortescue, Ben
name: Byrd, Mark
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ancilla post-selection is a common means of achieving fault-tolerance in quantum error-correction. However, it can lead to additional data errors due to movement or wait operations. Alternatives to post-selection may achieve lower overall failure rates due to avoiding such errors. We present numerical simulation results comparing the logical error rates for the fault-tolerant [[7,1,3]] Steane code using techniques of ancilla verification vs. the newer method of ancilla decoding, as described in [D.P. DiVincenzo and P. Aliferis, PRL 98, 020501 (2007)]. We simulate QEC procedures in which rhe possibility of ancilla verification failures requires the creation and storage of additional ancillas and/or additional waiting of the data until a new ancilla can be created. We find that the decoding method, which avoids verification failures, is advantageous in terms of overall error rate in various cases, even when measurement operations are no slower than others. We analyze the effect of different classes of physical error on the relative performance of these two methods.
description: 9 pages, 12 figures. v6: fixed metadata typo (paper unchanged). Earlier revisions revised graphs and simulation data, fixed typos, added additional analysis and citations
title: Επίδραση αλκαλικού περιβάλλοντος στην κρυσταλλική δομή και τις φυσικές ιδιότητες του μπεντονίτη της Μήλου
Creators: name: Νικητάκη Ουρανία
Publisher: name: Technical University of Crete
Year: 2004

description: Μη διαθέσιμο
MPEC 2023-W13 : 2023 VN10
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VN10

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
On the Klainerman-Machedon Conjecture of the Quantum BBGKY Hierarchy with Self-interaction
Creators: name: Chen, Xuwen
name: Holmer, Justin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider the 3D quantum BBGKY hierarchy which corresponds to the $N$-particle Schrödinger equation. We assume the pair interaction is $N^{3β-1}V(N^β\bullet).$ For interaction parameter $β\in(0,\frac23)$, we prove that, as $N\rightarrow \infty ,$ the limit points of the solutions to the BBGKY hierarchy satisfy the space-time bound conjectured by Klainerman-Machedon in 2008. This allows for the application of the Klainerman-Machedon uniqueness theorem, and hence implies that the limit is uniquely determined as a tensor product of solutions to the Gross-Pitaevski equation when the $N$-body initial data is factorized. The first result in this direction in 3D was obtained by T. Chen and N. Pavlović (2011) for $β\in (0,\frac14)$ and subsequently by X. Chen (2012) for $β\in (0,\frac27]$. We build upon the approach of X. Chen but apply frequency localized Klainerman-Machedon collapsing estimates and the endpoint Strichartz estimate in the estimate of the potential part to extend the range to $β\in (0,\frac23)$. Overall, this provides an alternative approach to the mean-field program by Erdös-Schlein-Yau (2007), whose uniqueness proof is based upon Feynman diagram combinatorics.
description: v2, final version for Journal of the European Mathematical Society. v1 is a less technical version
title: Μελέτη επιφανειακής εκμετάλλευσης λατομείου αδρανών υλικών στην περιοχή Ρεθύμνου
Creators: name: Μητριτσάκης Νίκος
Publisher: name: Technical University of Crete
Year: 2004

description: Μη διαθέσιμο
Holographic description of the Schwinger effect in electric and magnetic fields
Creators: name: Sato, Yoshiki
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a generalization of the holographic Schwinger effect proposed by Semenoff and Zarembo to the case with constant electric and magnetic fields. There are two ways to turn on magnetic fields, i) the probe D3-brane picture and ii) the string world-sheet picture. In the former picture, magnetic fields both perpendicular and parallel to the electric field are activated by a Lorentz transformation and a spatial rotation. In the latter one, the classical solutions of the string world-sheet corresponding to circular Wilson loops are generalized to contain two additional parameters encoding the presence of magnetic fields.
description: 18 pages, 2 figures, v2: a comment added, v3: typos corrected
Peter Arlt: Die Flucht des Sisyphos, Griechischer Mythos und Kunst. Eine europäische Bildtradition
Creators: name: Werner, Jürgen
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Peter Arlt: Die Flucht des Sisyphos, Griechischer Mythos und Kunst. Eine europäische Bildtradition, ihre Aktualität in der DDR und heute. Gotha (Kunstverlag) 2008. 213 S. 144 Abb.
description: Forum Classicum, Nr. 2 (2009): Forum Classicum
A logarithmically completely monotonic function involving the ratio of gamma functions
Creators: name: Qi, Feng
name: Li, Wen-Hui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Information Theory (cs.IT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 26A48, 33B15, 65R10

description: In the paper, the authors concisely survey and review some functions involving the gamma function and its various ratios, simply state their logarithmically complete monotonicity and related results, and find necessary and sufficient conditions for a new function involving the ratio of two gamma functions and originating from the coding gain to be logarithmically completely monotonic.
description: 11 pages
Supplementary document for High-speed 4 × 4 silicon photonic electro-optic switch, operating at the 2 μm waveband - 6608040.pdf
Creators: name: Wang, Jiawei
name: Sia, Jia Xu Brian
name: Li, Xiang
name: Guo, Xin
name: Wang, Wanjun
name: Qiao, Zhongliang
name: Littlejohns, Callum
name: Liu, Chongyang
name: Reed, Graham
name: Wang, Hong
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental document
Stability of local quantum dissipative systems
Creators: name: Cubitt, Toby S.
name: Lucia, Angelo
name: Michalakis, Spyridon
name: Perez-Garcia, David
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Open quantum systems weakly coupled to the environment are modeled by completely positive, trace preserving semigroups of linear maps. The generators of such evolutions are called Lindbladians. In the setting of quantum many-body systems on a lattice it is natural to consider Lindbladians that decompose into a sum of local interactions with decreasing strength with respect to the size of their support. For both practical and theoretical reasons, it is crucial to estimate the impact that perturbations in the generating Lindbladian, arising as noise or errors, can have on the evolution. These local perturbations are potentially unbounded, but constrained to respect the underlying lattice structure. We show that even for polynomially decaying errors in the Lindbladian, local observables and correlation functions are stable if the unperturbed Lindbladian has a unique fixed point and a mixing time which scales logarithmically with the system size. The proof relies on Lieb-Robinson bounds, which describe a finite group velocity for propagation of information in local systems. As a main example, we prove that classical Glauber dynamics is stable under local perturbations, including perturbations in the transition rates which may not preserve detailed balance.
description: 38 pages, 3 figures. Final version
„Die Bekämpfung des illegalen Handels mit archäologischen Kulturgütern: Neue Wege auf der Internetplattform eBay“
Creators: name: Odendahl, Kerstin
Publisher: name: Kunstrechtsspiegel
Year: 2017

description: Kunstrechtsspiegel, Nr. 4 (2008): Kunstrechtsspiegel
title: Ανάπτυξη μεθόδων επεξεργασίας δεδομένων γεωραντάρ με την χρήση νευρωνικών δικτύων-εφαρμογές σε περιβαλλοντικά προβλήματα
Creators: name: Παπαβασιλείου Αγγελική
Publisher: name: Technical University of Crete
Year: 2004

description: Μη διαθέσιμο
ECADOC Summer School in Lausanne 2016: Restoring Hope: Career Concerns in Times of Crisis
Creators: name: Albien, Anouk
name: Pernsteiner, Christina
name: Makinen, Sanna
name: Robinet, Marie-Line
name: Alexander, Rosie
name: Cernja, Iva
name: Levin, Nimrod
name: Annovazzi, Chiara
Publisher: name: Network for Innovation in Guidance and Counselling in Europe (NICE)
Year: 2017

description: Participants’ Perspective on the Event, edited by Anouk Albien (Stellenbosch University, South Africa)
description: NICE Newsletter, No 1 (2017)
title: Παραμετρική ανάλυση θεμελίωσης σε εξυγιασμένα αμμώδη αργιλικά  εδάφη
Creators: name: Δουμάνη Δήμητρα
Publisher: name: Technical University of Crete
Year: 2004

description: Μη διαθέσιμο
The fermionic observable in the Ising model and the inverse Kac-Ward operator
Creators: name: Lis, Marcin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82B20, 60C05

description: We show that the critical Kac-Ward operator on isoradial graphs acts in a certain sense as the operator of s-holomorphicity, and we identify the fermionic observable for the spin Ising model as the inverse of this operator. This result is partially a consequence of a more general observation that the inverse Kac-Ward operator for any planar graph is given by what we call a fermionic generating function. Furthermore, using bounds for the spectral radius and operator norm of the Kac-Ward transition matrix, we provide a general picture of the non-backtracking walk representation of the critical and supercritical inverse Kac-Ward operators on isoradial graphs.
description: 15 pages, 2 figures. The final publication is available at link.springer.com
An introduction to East Greenland's functional structure: An epibenthic community assessment and their associated traits and drivers.
Creators: name: Armitage, Phoebe
name: Törnroos, Anna
name: Nordström, Marie
name: Bonsdorff, Erik
Publisher: name: Zenodo
Year: 2021
Subjects: Marine invertebrates
Arctic
Epibenthos
Ecosystem ecology

description: A short presentation was given at the ICYMARE Youth Conference in 2021. The presentation informs of our work on epibenthic communities in Northeast Greenland and describes biodiversity and functional diversity using species traits and their vulnerability and redundancy. The presentation continues to outline our results that show the different environmental covariates that play a significant role in the presence or absence of species across a high Arctic continental shelf and the influence these covariates have on trait composition. Our results found that traits had a significant role in forming/maintaining biodiversity structure and it is the first study of its kind to describe epibenthos in this way.
title: Σύγκριση συμβατικών καυσίμων και ανανεώσιμων πηγών ενέργειας για ηλεκτροπαραγωγή με οικονομικά - περιβαλλοντικά - κοινωνικά κριτήρια
Creators: name: Κοντιάδης Ιωάννης-Διονύσιος
Publisher: name: Technical University of Crete
Year: 2006

description: Μη διαθέσιμο
title: Μελέτη και σχεδιασμός διηθητικών κλινών για τη συγκράτηση αιωρούμενων σωματιδίων αποβλήτων ελαιουργείων με χρήση ελληνικών λιγνιτών
Creators: name: Αντωνιάδου Βαλεντίνη
Publisher: name: Technical University of Crete
Year: 2006

description: Μη διαθέσιμο
Application Of Substitution Schemes For The Method Of Measuring The Humidity Of Bulk Materials
Creators: name: Каландаров, Палван
Publisher: name: figshare
Year: 2021
Subjects: subject: 70307 Crop and Pasture Post Harvest Technologies (incl. Transportation and Storage)
subject: FOS: Agriculture, forestry and fisheries
subject: 99902 Engineering Instrumentation
subject: FOS: Other engineering and technologies
subject: 90802 Food Engineering

description: В статье рассматривается анализ высокочастотного измерителя влажности на основедиэлькометрический метод, применяемый к сыпучим материалам на примере зерна. Емкостныйописан метод, в котором контролируемый продукт рассматривается как диэлектрик, заполняющийпреобразователя, и обобщена эквивалентная схема преобразователя, которая может бытьпредставлен в виде электрической схемы.Проанализирована комплексная диэлектрическая проницаемость неполярного твердого диэлектрика, определяемая величинойкомплексная поляризуемость, а частотная зависимость диэлектрической проницаемости определяетсячастотные зависимости действительной и мнимой частей электронной и ионнойполяризация, где метрологическая и информационная оптимизация измерительного прибораописывается, что сводится к лучшему выделению полезного сигнала.В результате применения схемы замещения некоторые особенности влажностипреобразования выходного сигнала диэлькометрического высокочастотного первичного преобразователя,что определяет широкий практический непрерывный спектр времени релаксации, охватывающийсоответствующий диапазон измерения.
Index Theory and Supersymmetry of 5D Horizons
Creators: name: Grover, J.
name: Gutowski, J. B.
name: Papadopoulos, G.
name: Sabra, W. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove that the near-horizon geometries of minimal gauged five-dimensional supergravity preserve at least half of the supersymmetry. If the near-horizon geometries preserve a larger fraction, then they are locally isometric to $AdS_5$. Our proof is based on Lichnerowicz type theorems for two horizon Dirac operators constructed from the supercovariant connection restricted to the horizon sections, and on an application of the index theorem. An application is that all half-supersymmetric five-dimensional horizons admit an $\mathfrak{sl}(2, {\mathbb{R}})$ symmetry subalgebra.
description: Section 7, on the sl(2,R) symmetry, has been added. 23 pages, latex, uses jheppub.sty
Kanagawa, from the series Fifty-three Stations of the Tōkaidō
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: In this image of the fourth station of the Tōkaidō, Hiroshige features the many teahouses along the hill at Kanagawa and a long row of travelers, encouraged by assistants to stop by their shops.
Einstein locally conformal calibrated $G_2$-structures
Creators: name: Fino, Anna
name: Raffero, Alberto
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We study locally conformal calibrated $G_2$-structures whose underlying Riemannian metric is Einstein, showing that in the compact case the scalar curvature cannot be positive. As a consequence, a compact homogeneous $7$-manifold cannot admit an invariant Einstein locally conformal calibrated $G_2$-structure unless the underlying metric is flat. In contrast to the compact case, we provide a non-compact example of homogeneous manifold endowed with a locally conformal calibrated $G_2$-structure whose associated Riemannian metric is Einstein and non Ricci-flat. The homogeneous Einstein metric is a rank-one extension of a Ricci soliton on the $3$-dimensional complex Heisenberg group endowed with a left-invariant coupled ${\rm SU}(3)$-structure $(ω, Ψ)$, i.e., such that $d ω= c {\rm Re}(Ψ)$, with $c \in \mathbb{R} - \{ 0 \}$. Nilpotent Lie algebras admitting a coupled ${\rm SU}(3)$-structure are also classified.
description: 16 pages, to appear in Math. Z
Wang-Landau sampling: a criterion for halting the simulations
Creators: name: Caparica, Álvaro de Almeida
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In this work we propose a criterion to finish the simulations of the Wang-Landau sampling. Instead of determining a final modification factor for all simulations and every sample sizes, we investigate the behavior of the temperature of the peak of the specific heat during the simulations and finish them when this value varies bellow a given limit. As a result, different runs stop at different final modification factors. We show that in place of the temperature of the peak of the specific heat one can adopt alternatively the integrated heat transfer as a reference quantity. We apply this technique to the two-dimensional Ising model and a homopolymer. We verify that for the Ising model the mean order of the final modification factors are roughly the same for all lattice sizes, but for the homopolymer the order of the final modification factors increases with increasing polymer sizes. The results show that the simulations can be halted much earlier then it is conventional in Wang-Landau sampling, but manifold finite-size simulations are required in order to obtain accurate results. A brief application to the three-dimensional Ising model is also available.
description: arXiv admin note: text overlap with arXiv:1110.4517
Ensembling classification models based on phalanxes of variables with applications in drug discovery
Creators: name: Tomal, Jabed H.
name: Welch, William J.
name: Zamar, Ruben H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (stat.ML)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Statistical detection of a rare class of objects in a two-class classification problem can pose several challenges. Because the class of interest is rare in the training data, there is relatively little information in the known class response labels for model building. At the same time the available explanatory variables are often moderately high dimensional. In the four assays of our drug-discovery application, compounds are active or not against a specific biological target, such as lung cancer tumor cells, and active compounds are rare. Several sets of chemical descriptor variables from computational chemistry are available to classify the active versus inactive class; each can have up to thousands of variables characterizing molecular structure of the compounds. The statistical challenge is to make use of the richness of the explanatory variables in the presence of scant response information. Our algorithm divides the explanatory variables into subsets adaptively and passes each subset to a base classifier. The various base classifiers are then ensembled to produce one model to rank new objects by their estimated probabilities of belonging to the rare class of interest. The essence of the algorithm is to choose the subsets such that variables in the same group work well together; we call such groups phalanxes.
description: Published at http://dx.doi.org/10.1214/14-AOAS778 in the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Eight Stallions
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019

description: This painting depicts eight horses about to bathe in a stream across the foreground. Six steeds take various poses alongside the water, including one rolling on his back. From the distance, a groom is seen riding the seventh stallion, leading the eight, along a winding path between rocks and trees. Every horse is individualized with different coat colors and patterns. A flock of black birds is over a tree to the upper left in which the distant mountains in light washes appear with the artist's inscription.
Distinct trait combinations and functional diversity patterns across a high Arctic continental shelf
Creators: name: Armitage, Phoebe.
name: Törnroos, Anna
name: Fredriksen, Rosalyn
name: Bluhm, Bodil
name: Christiansen
name: Nordtsröm, Marie
Publisher: name: Zenodo
Year: 2022
Subjects: Marine invertebrates
Arctic
Benthic ecology
Community ecology
Trait research

description: A poster for the Arctic Frontiers Conference in May 2022.
 The poster is for our work on epibenthic communities across the Northeast Greenland continental shelves, covering fjords, the shelf, shelfbreak, and slope habitats. We performed a trait analysis to determine the functional diversity of epibenthos for the first time in Northeast Greenland.
Establishment of replication-competent vesicular stomatitis virus-based recombinant viruses suitable for SARS-CoV-2 entry and neutralization assays
Creators: name: Li, Hongyue
name: Zhao, Chaoyue
name: Zhang, Yuhang
name: Yuan, Fei
name: Zhang, Qi
name: Shi, Xuanling
name: Zhang, Linqi
name: Qin, Chengfeng
name: Zheng, Aihua
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Virology

description: Replication-competent vesicular stomatitis virus (VSV)-based recombinant viruses are useful tools for studying emerging and highly pathogenic enveloped viruses in level 2 biosafety facilities. Here, we used a replication-competent recombinant VSVs (rVSVs) encoding the spike (S) protein of SARS-CoV-2 in place of the original G glycoprotein (rVSV-eGFP-SARS-CoV-2) to develop a high-throughput entry assay for SARS-CoV-2. The S protein was incorporated into the recovered rVSV-eGFP-SARS-CoV-2 particles, which could be neutralized by sera from convalescent COVID-19 patients. The recombinant SARS-CoV-2 also displayed entry characteristics similar to the wild type virus, such as cell tropism and pH-dependence. The neutralizing titers of antibodies and sera measured by rVSV-eGFP-SARS-CoV-2 were highly correlated with those measured by wild-type viruses or pseudoviruses. Therefore, this is a safe and convenient screening tool for SARS-CoV-2, and it may promote the development of COVID-19 vaccines and therapeutics.
Zur Einführung: Russisch als Herkunftssprache in Deutschland unterrichten
Creators: name: Bergmann, Anka
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Herkunftssprachendidaktik
subject: Mehrsprachigkeit
subject: Russisch als Herkunftssprache
subject: Sprachenlernen in der mehrsprachigen Gesellschaft
subject: 491 Ostindoeuropäische und keltische Sprachen

description: Der Beitrag thematisiert gesellschaftliche und bildungspolitische Perspektiven des Sprachenlernens in einer plurilingualen und globalisierten Gesellschaft, die den Hintergrund für das Lernen von Herkunftssprachen bilden und komplexe Herausforderungen für das Bildungssystem erzeugen. Es werden didaktische Prinzipien als Leitlinien pädagogisch-didaktischen Handelns für das Unterrichten von Herkunftssprachen entwickelt und Faktoren ihrer Ausarbeitung für Russisch als Herkunftssprache im universitären Sprachenlernen konkretisiert.
Size and structure of an epistatic space
Creators: name: Taggi, Lorenzo
name: Colaiori, Francesca
name: Loreto, Vittorio
name: Tria, Francesca
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We provide quantitative estimates on the size and the structure of the epistatic space defined in the main article, "Dynamical Correlations in the escape strategy of Influenza A virus", EPL 101 68003.
description: This is the supplementary material for the article "Dynamical Correlations in the escape strategy of Influenza A virus"
Exact simulation of the GHZ distribution
Creators: name: Brassard, Gilles
name: Devroye, Luc
name: Gravel, Claude
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: John Bell has shown that the correlations entailed by quantum mechanics cannot be reproduced by a classical process involving non-communicating parties. But can they be simulated with the help of bounded communication? This problem has been studied for more than two decades and it is now well understood in the case of bipartite entanglement. However, the issue was still widely open for multipartite entanglement, even for the simplest case, which is the tripartite Greenberger-Horne-Zeilinger (GHZ) state. We give an exact simulation of arbitrary independent von Neumann measurements on general n-partite GHZ states. Our protocol requires O(n^2) bits of expected communication between the parties, and O(n log n) expected time is sufficient to carry it out in parallel. Furthermore, we need only an expectation of O(n) independent unbiased random bits, with no need for the generation of continuous real random variables nor prior shared random variables. In the case of equatorial measurements, we improve on the prior art with a protocol that needs only O(n log n) bits of communication and O(log^2 n) parallel time. At the cost of a slight increase in the number of bits communicated, these tasks can be accomplished with a constant expected number of rounds.
description: Improved in a variety of ways, including new results. 27 pages
Chromatic polynomials of graphs from Kac-Moody algebras
Creators: name: Venkatesh, R.
name: Viswanath, Sankaran
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C31, 17B10, 17B67

description: We give a new interpretation of the chromatic polynomial of a simple graph G in terms of the Kac-Moody Lie algebra with Dynkin diagram G. We show that the chromatic polynomial is essentially the q-Kostant partition function of this Lie algebra evaluated on the sum of the simple roots. Applying the Peterson recurrence formula for root multiplicities, we obtain a new realization of the chromatic polynomial as a weighted sum of paths in the bond lattice of G.
description: Comments welcome, Typos are fixed. Updated version
title: High performance data broadcasting
Creators: name: Χαρπαντίδου Ζαχαρούλα Π.
Publisher: name: Technical University of Crete
Year: 2000

description: . 1: Introduction -- Ch. 2: Related work and problem formulation -- Ch. 3: Combination of broadcast and disk scheduling -- Ch. 4: The effect of cache -- Ch. 5: The study of the end-to-end delays
String Submodular Functions with Curvature Constraints
Creators: name: Zhang, Zhenliang
name: Chong, Edwin K. P.
name: Pezeshki, Ali
name: Moran, William
Publisher: name: arXiv
Year: 2013
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: The problem of objectively choosing a string of actions to optimize an objective function that is string submodular has been considered in [1]. There it is shown that the greedy strategy, consisting of a string of actions that only locally maximizes the step-wise gain in the objective function achieves at least a (1-e^{-1})-approximation to the optimal strategy. This paper improves this approximation by introducing additional constraints on curvatures, namely, total backward curvature, total forward curvature, and elemental forward curvature. We show that if the objective function has total backward curvature σ, then the greedy strategy achieves at least a \frac{1}σ(1-e^{-σ})-approximation of the optimal strategy. If the objective function has total forward curvature ε, then the greedy strategy achieves at least a (1-ε)-approximation of the optimal strategy. Moreover, we consider a generalization of the diminishing-return property by defining the elemental forward curvature. We also consider the problem of maximizing the objective function subject to general a string-matroid constraint. We investigate an applications of string submodular functions with curvature constraints.
description: to appear in IEEE Transaction on Automatic Control
title: Johannes Schütz, Wenn Heimat Angst macht. „Gewalt der Vereinigung“ in biografischen Erzählungen
Creators: name: Schütz, Johannes
Publisher: name: ZZF - Centre for Contemporary History: Zeitgeschichte online
Year: 2021

description: „Mit Angst, Hass und entgrenzter Gewalt – und nicht mit Sektflaschen begann die Deutsche Einheit für Linke, Deutsche mit Migrationshintergrund, Ausländerinnen und Ausländer in vielen ostdeutschen Städten“, kommentierte unlängst Christian Bangel den 3. Oktober 2020 in DIE ZEIT. „Das war nicht nur ein schlechter Start der Deutschen Einheit. Es war ein Fanal für die neuen Zeiten.“ Tatsächlich bekamen die rechten Gewalteskalationen im Übergang von der DDR zur vereinigten Bundesrepublik, die von körperlicher Bedrohung und Herabsetzung bis zu tödlichen Angriffen reichten – zuletzt immer mehr Aufmerksamkeit. In manchen Regionen hatte diese „Gewalt der Vereinigung“ vor allem für nicht-weiße Personen, Wohnungslose und Linke eine permanente Bedrohungslage geschaffen. Unter #Baseballschlägerjahre forderte Bangel vorletztes Jahr dazu auf, die Erinnerungen an die Vereinigungsgewalt zu teilen. Innerhalb einer Woche sammelten sich mehrere hundert kurze Einzelberichte an; im November 2020 veröffentlichte der RBB in Kooperation mit ZEIT ONLINE daran anknüpfend zusätzlich sechs Kurzfilme, die Schlaglichter auf einzelne Orte werfen und Geschichten von Bedrohung, Terror und Angst erzählen. Es gibt aber auch einige autobiographische Romane. Jene, die zu dieser Zeit ihre Jugend in Ostdeutschland erlebten, erzählen davon, wie sie angegriffen, bedroht und zusammengeschlagen wurden: Clemens Meyer in „Als wir träumten“ (2007), Peter Richter in „89/90“ (2015), Manja Präkels in „Als ich mit Hitler Schnapskirschen aß“ (2017). Die autobiografischen Texte stehen im Mittelpunkt dieses Beitrages, da sie eine neue Perspektive auf die Erfahrung der Transformationsprozesse der Vereinigung eröffnen und sich mit einem anderen Phänomen der postsozialistischen Gesellschaft in Zusammenhang bringen lassen: der Abwanderung. Die enthemmte rechte Gewalt war für die in diesem Beitrag ausgewählten Berichtenden ein wichtiger Anlass, den Osten zu verlassen.
The internal branch lengths of the Kingman coalescent
Creators: name: Dahmer, Iulia
name: Kersting, Götz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In the Kingman coalescent tree the length of order $r$ is defined as the sum of the lengths of all branches that support $r$ leaves. For $r=1$ these branches are external, while for $r\ge2$ they are internal and carry a subtree with $r$ leaves. In this paper we prove that for any $s\in\mathbb{N}$ the vector of rescaled lengths of orders $1\le r\le s$ converges to the multivariate standard normal distribution as the number of leaves of the Kingman coalescent tends to infinity. To this end we use a coupling argument which shows that for any $r\ge2$ the (internal) length of order $r$ behaves asymptotically in the same way as the length of order 1 (i.e., the external length).
description: Published at http://dx.doi.org/10.1214/14-AAP1024 in the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)