cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Grundlagen und Prinzipien der Entwicklung eines Curriculums für herkunftssprachliche Lerner
Creators: name: Brüggemann, Natalia
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Curriculumsentwicklung
subject: Herkunftssprache Russisch
subject: Herkunftssprachendidaktik
subject: Bilingualität
subject: 491 Ostindoeuropäische und keltische Sprachen

description: Der Beitrag klärt zunächst umfassend grundlegende Begriffe und Konzepte der Mehrsprachigkeitsforschung und -didaktik und systematisiert Merkmale des Russischen als Herkunftssprache in Deutschland. Die Variabilität der Sprachkompetenzen und damit verbundene Heterogenität in den Studiengruppen ist sowohl ein methodologisches Problem für Untersuchungen zur Herkunftssprache Russisch als auch ein didaktisch-methodisches Problem in Curriculumsentwicklung und Unterrichtsorganisation. Die Autorin entwickelt ein abgestuftes Modell zur Korrelation verschiedener Formen des herkunftssprachlichen Erwerbs (Bilingualitätstypen) mit sprachlichen Kompetenzbereichen und ordnet schließlich systemlinguistisch fokussierte Bedarfsbereiche den rezeptiven und produktiven Kompetenzbereichen als Grundlage für ein Currciulum im universitären Sprachunterricht zu.
Decomposition of acyclic normal currents in a metric space
Creators: name: Paolini, Emanuele
name: Stepanov, Eugene
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: Functional Analysis (math.FA)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: We prove that every acyclic normal one-dimensional real Ambrosio-Kirchheim current in a Polish (i.e. complete separable metric) space can be decomposed in curves, thus generalizing the analogous classical result proven by S. Smirnov in Euclidean space setting. The same assertion is true for every complete metric space under a suitable set-theoretic assumption.
title: Ανάπτυξη στατιστικών μεθόδων και λογισμικού για τον προσδιορισμό πηγών ρύπανσης πετρελαιοειδών
Creators: name: Ανδρεάδης Κωνσταντίνος
Publisher: name: Technical University of Crete
Year: 2002

description: Μη διαθέσιμο
A short proof that all linear codes are weakly algebraic-geometric using Bertini theorems of B. Poonen
Creators: name: Srinivasan, Srimathy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 14G05, 14G50

description: In this paper we give a simpler proof of a deep theorem proved by Pellikan, Shen and van Wee that all linear codes are weakly algebraic-geometric using a theorem of B.Poonen.
description: Title modified, expository content shortened. Final version to appear in Discrete Math
title: Εκτίμηση της μεταφοράς οξυγόνου σε πιλοτική δεξαμενή αερισμού εφοδιασμένη με στατικούς διαχυτές pulsar
Creators: name: Οικονομίδης Γιάννης
Publisher: name: Technical University of Crete
Year: 2002

description: Μη διαθέσιμο
title: On the influence of Libet clock parameters on intentional binding and intention timing
Creators: name: Ivanof, Bianca Elena
Publisher: name: Goldsmiths, University of London
Year: 2021

description: The Libet clock method for subjective timing of events is a widely used implicit agency and intention timing measure. However, to date, it has been unclear how the properties of the Libet clock stimulus, as well as the participant instructions, affect these two cognitive phenomena and, by extension, the comparability of results across the volition literature. This is something this PhD thesis assessed for the very first time. In a series of experiments, I first investigated how manipulations of the Libet clock influenced intentional binding, a paradigm based on the Libet clock that provides an implicit measure of sense of agency. I found that certain manipulations of the clock, namely the rotation speed and radius, significantly impact on binding. I then moved beyond the clock stimulus per se and found that manipulations of Libet-style action initiation instructions influence binding. Finally, I turned the lens on intention timing itself, something the Libet clock was originally designed to measure. I found that manipulations of the Libet clock speed and number of clock markings have a significant effect on intention timing judgments. These findings are discussed in the context of their practical implications for the interstudy variability in results in volition research, and of their theoretical implications for theories of sense of agency and intention timing.
title: Sound Processing for Autonomous Driving
Creators: name: Furletov, Yury
Publisher: name: UNSPECIFIED
Year: 2022

description: Nowadays, a variety of intelligent systems for autonomous driving have been developed, which have already shown a very high level of capability. One of the prerequisites for autonomous driving is an accurate and reliable representation of the environment around the vehicle. Current systems rely on cameras, RADAR, and LiDAR to capture the visual environment and to locate and track other traffic participants. Human drivers, in addition to vision, have hearing and use a lot of auditory information to understand the environment in addition to visual cues. In this thesis, we present the sound signal processing system for auditory based environment representation. Sound propagation is less dependent on occlusion than all other types of sensors and in some situations is less sensitive to different types of weather conditions such as snow, ice, fog or rain. Various audio processing algorithms provide the detection and classification of different audio signals specific to certain types of vehicles, as well as localization. First, the ambient sound is classified into fourteen major categories consisting of traffic objects and actions performed. Additionally, the classification of three specific types of emergency vehicles sirens is provided. Secondly, each object is localized using a combined localization algorithm based on time difference of arrival and amplitude. The system is evaluated on real data with a focus on reliable detection and accurate localization of emergency vehicles. On the third stage the possibility of visualizing the sound source on the image from the autonomous vehicle camera system is provided. For this purpose, a method for camera to microphones calibration has been developed. The presented approaches and methods have great potential to increase the accuracy of environment perception and, consequently, to improve the reliability and safety of autonomous driving systems in general.
title: Γεωφυσική διασκόπηση στον χώρο στάθμευσης του κτιρίου της διοίκησης του πολυτεχνείου με τη μέθοδο του γεωραντάρ
Creators: name: Σακούλα Ευαγγελία
Publisher: name: Technical University of Crete
Year: 2008

description: Μη διαθέσιμο
Extreme wave runup on a vertical cliff
Creators: name: Carbone, Francesco
name: Dutykh, Denys
name: Dudley, John M.
name: Dias, Frédéric
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Physics (physics.class-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Wave impact and run-up onto vertical obstacles are among the most important phenomena which must be taken into account in the design of coastal structures. From linear wave theory, we know that the wave amplitude on a vertical wall is twice the incident wave amplitude with weakly nonlinear theories bringing small corrections to this result. In this present study, however, we show that certain simple wave groups may produce much higher run-ups than previously predicted, with particular incident wave frequencies resulting in run up heights exceeding the initial wave amplitude by a factor of 5, suggesting that the notion of the design wave used in coastal structure design may need to be revisited. The results presented in this study can be considered as a note of caution for practitioners, on one side, and as a challenging novel material for theoreticians who work in the field of extreme wave - coastal structure interaction.
description: 13 pages, 7 figures, 44 references. Other author's papers can be downloaded from http://www.denys-dutykh.com/
title: Γεωφυσική διασκόπηση στο τμήμα Λυγαριά-Περιβόλι του οδικού άξονα Ε65'
Creators: name: Αργύρης Κωνσταντίνος
Publisher: name: Technical University of Crete
Year: 2008

description: Μη διαθέσιμο
On a fractional binomial process
Creators: name: Cahoy, Dexter O.
name: Polito, Federico
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The classical binomial process has been studied by \citet{jakeman} (and the references therein) and has been used to characterize a series of radiation states in quantum optics. In particular, he studied a classical birth-death process where the chance of birth is proportional to the difference between a larger fixed number and the number of individuals present. It is shown that at large times, an equilibrium is reached which follows a binomial process. In this paper, the classical binomial process is generalized using the techniques of fractional calculus and is called the fractional binomial process. The fractional binomial process is shown to preserve the binomial limit at large times while expanding the class of models that include non-binomial fluctuations (non-Markovian) at regular and small times. As a direct consequence, the generality of the fractional binomial model makes the proposed model more desirable than its classical counterpart in describing real physical processes. More statistical properties are also derived.
The homotopy theory of cyclotomic spectra
Creators: name: Blumberg, Andrew J.
name: Mandell, Michael A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: Primary 19D55, Secondary 18G55, 55Q91

description: We describe spectral model category structures on the categories of cyclotomic spectra and $p$-cyclotomic spectra (in orthogonal spectra) with triangulated homotopy categories. We show that the functors $TR$ and $TC$ are corepresentable in these categories. Specifically, the derived mapping spectrum out of the sphere spectrum in the category of cyclotomic spectra corepresents the finite completion of $TC$ and the derived mapping spectrum out of the sphere spectrum in the category of $p$-cyclotomic spectra corepresents the $p$-completion of $TC(-;p)$.
description: This is a last draft version (May 5, 2015) of an article whose final version was first published in Geometry & Topology in 2015, published by Mathematical Sciences Publishers
Representations of quantum groups at roots of unity, Whittaker vectors and q-W algebras
Creators: name: Sevostyanov, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 17B37

description: Let $U_\varepsilon({\mathfrak g})$ be the standard simply connected version of the Drinfeld-Jumbo quantum group at an odd primitive m-th root of unity $\varepsilon$. The center of $U_\varepsilon({\mathfrak g})$ contains a huge commutative subalgebra isomorphic to the algebra $Z_G$ of regular functions on (a finite covering of a big cell in) a complex connected, simply connected algebraic group $G$ with Lie algebra $\mathfrak g$. Let $V$ be a finite-dimensional representation of $U_\varepsilon({\mathfrak g})$ on which $Z_G$ acts according to a non-trivial character $η_g$ given by evaluation of regular functions at $g\in G$. Then $V$ is a representation of the finite-dimensional algebra $U_{η_g}=U_\varepsilon({\mathfrak g})/U_\varepsilon({\mathfrak g}){\rm Ker}~η_g$. We show that in this case, under certain restrictions on $m$, $U_{η_g}$ contains a subalgebra $U_{η_g}({\mathfrak m}_-)$ of dimension $m^{{\frac{1}{2}}{\rm dim}~\mathcal{O}}$, where $\mathcal{O}$ is the conjugacy class of $g$, and $U_{η_g}({\mathfrak m}_-)$ has a one-dimensional representation $\mathbb{C}_{χ_g}$. We also prove that if $V$ is not trivial then the space of Whittaker vectors ${\rm Hom}_{U_{η_g}({\mathfrak m}_-)}(\mathbb{C}_{χ_g},V)$ is not trivial and the algebra $W_{η_g}={\rm End}_{U_{η_g}}(U_{η_g}\otimes_{U_{η_g}({\mathfrak m}_-)}\mathbb{C}_{χ_g})$ naturally acts on it which gives rise to a Schur-type duality between representations of the algebra $U_{η_g}$ and of the algebra $W_{η_g}$ called a q-W algebra.
description: 25 pages; this paper contains the part of the previous version of the text covering the results on Whittaker vectors in modules over quantum groups at roots of unity; the proof of the De Concini-Kac-Procesi conjecture and the related results on q-W-algebras at roots of unity can be found in arXiv:2102.03208. arXiv admin note: text overlap with arXiv:1011.2431
Additional file 1 of Epigenome-wide association study of Alzheimer’s disease replicates 22 differentially methylated positions and 30 differentially methylated regions
Creators: name: Li, Qingqin S.
name: Sun, Yu
name: Wang, Tania
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Supplemental Figures S1–S4.
title: Προσδιορισμός και μελέτη οργανικού και ανόργανου θείου σε ελληνικούς λιγνίτες
Creators: name: Αμαργιανιτάκη Μαρία
Publisher: name: Technical University of Crete
Year: 2008

description: Μη διαθέσιμο
Towards a replicator dynamics model of age structured populations
Creators: name: Argasinski, Krzysztof
name: Broom, Mark
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Classical Analysis and ODEs (math.CA)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper we present a new modelling framework combining replicator dynamics (which is the standard model of frequency dependent selection) with the model of an age-structured population. The new framework allows for the modelling of populations consisting of competing strategies carried by individuals who change across their life cycle. Firstly the discretization of the McKendrick von Foerster model is derived. It is shown that the Euler--Lotka equation is satisfied when the new model reaches a steady state (i.e. stable frequencies between the age classes). This discretization consists of the unit age classes and the timescale is chosen that only a fraction of individuals play single game round. This implies linear dynamics within single time unit when individuals not killed during game round are moved from one age class to another. Since its local linear behaviour the system is equivalent to large Bernadelli-Lewis-Leslie matrix. Then the methodology of multipopulation games is used for the derivation of two, mutually equivalent systems of equations. The first contains equations describing the evolution of the strategy frequencies in the whole population completed by subsystems of equations describing the evolution of the age structure for each strategy. The second system contains equations describing the changes of the general population's age structure, completed with subsystems of equations describing the selection of the strategies within each age class. Then the obtained system of replicator dynamics is presented in the form of the mixed ODE-PDE system. The obtained results are illustrated by example of the sex ratio model which shows that when different mortalities of both sexes are assumed, the sex ratio of 0.5 is obtained but that Fisher's mechanism driven by the reproductive value of the different sexes is not in equilibrium.
description: 52 pages, 8 figures
title: Revisiting linear stability of the asymptotic suction boundary layer and plane Couette flow
Creators: name: Yalcin, Alparslan
Publisher: name: UNSPECIFIED
Year: 2022

description: One of the unsolved problems of fluid mechanics revolves around the prediction and description of large-scale turbulent structures, so-called turbulent superstructures, in various wall-bounded shear flows such as the asymptotic suction boundary layer (ASBL) or plane Couette flow (PCF). It is assumed that the origin of such superstructures is to be sought in the laminar-turbulent transition phenomenon. In the present dissertation, linear stability theory (LST) is therefore revisited for aforementioned ASBL and PCF with the goal of disclosing phenomena describing and influencing the formation of large-scale structures. In the context of the ASBL, the present understanding of linear stability is extended by investigating the analytical solution of the underlying Orr–Sommerfeld equation (OSE). One of the key results in the present work is the establishment of a clear interrelation between Reynolds number and streamwise wavelength of perturbations through asymptotic analyses, which demonstrably is of universal nature and, thus, applicable to any wall-bounded shear flow. Furthermore, continuous modes are derived and examined for the ASBL, where in the spatial stability problem one solution branch gives novel unstable continuous modes. A curiosity of PCF is that LST predicts linear stability exclusively, whereas experiments and numerical simulations provide evidence of laminar-turbulent transition leading to fully turbulent PCF. It is shown in this work that, in contrast to suction boundary layers, transpiration destabilizes PCF and above a minimal transpiration rate yields PCF linearly unstable. It is additionally demonstrated that in the infinite limit of the transpiration rate, PCF can be converted to the ASBL via specific parameter and coordinate transformations. The final part of this thesis revolves around the discovery of novel unstable three-dimensional (3D) spatial modes. An extension of Squire’s transformation to the spatial stability framework discloses the mathematical necessity of additionally introducing complex spanwise wave numbers and, thus, possible growth in the spanwise direction, which in previous research was neglected in view of Squire’s theorem. Thereof, it is demonstrated that these novel modes with oblique growth may lead to subcritical transition in potentially linearly unstable two-dimensional (2D) flows. Linearly stable 2D flows in turn experience growth of the perturbation velocity field in spanwise direction, which is reminiscent of large-scale laminar-turbulent patterns known from numerical simulations of transitioning PCF. Therefore, 3D PCF superposed by such oblique modes is studied in conclusion through a direct numerical simulation (DNS) with a spectral element solver.
title: Κατανομή ανακτώμενου και ολικού χρυσού σε ιζήματα από κυκλοστρωματογραφικές ακολουθίες του νεογενούς της δυτικής Κρήτης
Creators: name: Δημόπουλος Νικόλαος
Publisher: name: Technical University of Crete
Year: 2008

description: Μη διαθέσιμο
title: A comparative study of landmark-based image registration techniques
Creators: name: Μαρεντάκης Ιωάννης
Publisher: name: Technical University of Crete
Year: 2005

description:  Introduction -- 2. Content-based image retrieval (CBIR) in medical applications -- 3. Medical image registration methods -- 4. Norm-based approaches in orientation problems -- 5. Active shape models (ASM) - "Smart Snakes" -- 6. The iretative closest point algorithm (ICP) -- 7. Nelder-Mead algorithm
title: Ansprachen gehalten in der Stadtkirche in Frauenfeld am 28. Februar 1947 an der Trauerfeier für Heinz Häberlin, Bundesrat
title: Heinz Häberlin (1868-1947)
titleType: AlternativeTitle
title: Heinz Häberlin
titleType: AlternativeTitle
title: 6. September 1868 - 26. Februar 1947
titleType: Subtitle
Creators: name: Bolli, H.
name: Etter, Philipp
name: Altwegg, Paul
Publisher: name: Huber
Year: 1947
Subjects: subject: 320 Politikwissenschaft
subject: 920 Biografien, Genealogie, Insignien
subject: Nachruf
subject: Häberlin, Heinrich
subject: Frauenfeld
subject: Schweiz. Bundesrat

description: Inhalt: Lebenslauf ; Abdankungsrede von Herrn Dekan H. Bolli ; Ansprache von Herrn Bundespräsident Dr. Ph. Etter ; Worte der Erinnerung von Herrn Ständerat Dr. Paul Altwegg
title: Robust scheduling for real-time and non-real-time traffic in UMTS systems employing HSDPA
Creators: name: Γουγούσης Αλέξανδρος
Publisher: name: Technical University of Crete
Year: 2005

description:  Εισαγωγή στο UMTS και το WCDMA -- 2. Περιγραφή της HSDPA αρχιτεκτονικής -- 3. Προσομοίωση της HSDPA αρχιτεκτονικής -- 4. Best effort χρονοδρομολόγηση -- 5. QoS-based χρονοδρομολόγηση -- 6. Ανάλυση των παραμέτρων λειτουργίας του HSDPA
A unified approach to structural limits, and limits of graphs with bounded tree-depth
Creators: name: Nesetril, Jaroslav
name: De Mendez, Patrice Ossona
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In this paper we introduce a general framework for the study of limits of relational structures in general and graphs in particular, which is based on a combination of model theory and (functional) analysis. We show how the various approaches to graph limits fit to this framework and that they naturally appear as "tractable cases" of a general theory. As an outcome of this, we provide extensions of known results. We believe that this put these into next context and perspective. For example, we prove that the sparse--dense dichotomy exactly corresponds to random free graphons. The second part of the paper is devoted to the study of sparse structures. First, we consider limits of structures with bounded diameter connected components and we prove that in this case the convergence can be "almost" studied component-wise. We also propose the structure of limits objects for convergent sequences of sparse structures. Eventually, we consider the specific case of limits of colored rooted trees with bounded height and of graphs with bounded tree-depth, motivated by their role of elementary brick these graphs play in decompositions of sparse graphs, and give an explicit construction of a limit object in this case. This limit object is a graph built on a standard probability space with the property that every first-order definable set of tuples is measurable. This is an example of the general concept of {\em modeling} we introduce here. Our example is also the first "intermediate class" with explicitly defined limit structures.
description: added journal reference
Additional file 1 of Improved thermostability of creatinase from Alcaligenes Faecalis through non-biased phylogenetic consensus-guided mutagenesis
Creators: name: Bai, Xue
name: Li, Daixi
name: Ma, Fuqiang
name: Deng, Xi
name: Luo, Manjie
name: Feng, Yan
name: Yang, Guangyu
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified

description: Additional file 1. Fig. S1. Phylogenetic tree of CR homologous sequences. Fig. S2. AfCR homologous sequences alignment. Fig. S3. Distribution of the stability mutation sites in the CR structural homology model. Fig. S4. Sequence information and branch weight results. Fig. S5. The structural comparison between the wild type and thermostability-associated mutant CR variants. Table S1. CR homologous sequences information. Table S2. Primers of afCR single-site mutants. Table S3. Molecular mechanism of the stabilizing mutations.
Morphology and photocatalytic activity of highly oriented mixed phase titanium dioxide thin films
Creators: name: Hanaor, D. A. H.
name: Triani, G.
name: Sorrell, C. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Thin TiO2 films on quartz substrates were prepared by spin coating of undoped and metal-ion-doped Sol Gel precursors. These films were characterised by Scanning Electron Microscopy, Laser Raman Microspectroscopy, Xray Diffraction and UV Vis Transmission. The photocatalytic performances of the films were assessed by the photo-degradation of methylene-blue in aqueous solution under UV irradiation. Films exhibited a high degree of orientation and a thermal stabilization of the anatase phase as a result of substrate effects. In the absence of dopants, the rutile phase formed as parallel bands in the anatase which broadened as the transformation progressed. TiO2 films doped or co-doped with transition metals exhibited the formation of rutile in segregated clusters at temperatures under 800C as a result of increased levels of oxygen vacancies. Photocatalytic activity of the films synthesised in this work was low as likely a result of poor TiO2 surface contact with dye molecules in the solution. The presence of transition metal dopants appears detrimental to photocatalytic activity while the performance of mixed phase films was not observed to differ significantly from single phase material.
title: Gene Conversion amongst Alu SINE Elements
Creators: name: Doronina, Liliya
name: Reising, Olga
name: Schmitz, Jürgen
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2022
Subjects: subject: 610 Medicine and health

description: The process of non-allelic gene conversion acts on homologous sequences during recombination, replacing parts of one with the other to make them uniform. Such concerted evolution is best described as paralogous ribosomal RNA gene unification that serves to preserve the essential house-keeping functions of the converted genes. Transposed elements (TE), especially 'Alu' short interspersed elements (SINE) that have more than a million copies in primate genomes, are a significant source of homologous units and a verified target of gene conversion. The consequences of such a recombination-based process are diverse, including multiplications of functional TE internal binding domains and, for evolutionists, confusing divergent annotations of orthologous transposable elements in related species. We systematically extracted and compared 68,097 'Alu' insertions in various primates looking for potential events of TE gene conversion and discovered 98 clear cases of 'Alu–Alu' gene conversion, including 64 cases for which the direction of conversion was identified (e.g., 'AluS' conversion to 'AluY'). Gene conversion also does not necessarily affect the entire homologous sequence, and we detected 69 cases of partial gene conversion that resulted in virtual hybrids of two elements. Phylogenetic screening of gene-converted 'Alus' revealed three clear hotspots of the process in the ancestors of Catarrhini, Hominoidea, and gibbons. In general, our systematic screening of orthologous primate loci for gene-converted TEs provides a new strategy and view of a post-integrative process that changes the identities of such elements.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
title: Detection and classification of winding faults in windmill genarators using WT and ANN
Creators: name: Γκέτσης Ζαχαρίας
Publisher: name: Technical University of Crete
Year: 2006

description:  Introduction -- 2. Windings model -- 3. Algoritms overview: FT and WT -- 4. Artificial neural networks -- 5. Wavelet analysis and ANN classification
Green Methods for Extraction of Polysaccharides from the Fruits of Pithecellobium dulce
Creators: name: A. Mary Saral
name: S. Preethi
Publisher: name: Zenodo
Year: 2021
Subjects: P. dulce
polysaccharide
microwave assisted extraction
microwave assisted soxhlet extraction

description: A study was conducted to develop a rapid, simple microwave assisted extraction (MAE) methods for the extraction of for the polysaccharide from Pithecellobium dulce pods utilizing fundamental principles of “green” chemistry. The plant is reported to be a folk remedy for ear and toothache. It also acts as an emollient, anodyne and larvicidal in folk medicine. As the fruit is liked by common people throughout the country especially by the local residents of Vellore, a scientific investigation on the edible part of the plant was initiated in our laboratory. Optimization of extraction procedures using modern technologies significantly reduces the quantity of solvent consumed and waste generated during an extraction process. Thus microwave assisted extraction combined with soxhlet extraction (MASE) is demonstrated in our lab. Analysis of variance showed that the contribution of the quadratic model was significant for the responses. Under the optimum conditions, the extraction yield of crude polysaccharides was 63.7%. Whereas the combined experimental model (MASE) with 20% alcohol as extracting solvent resulted in the percentage of yield as 72.8%. This chapter outlines a systematic approach for optimization of an extraction procedure for isolation of potential polysaccharide from plant sources. The extracts were tested to determine the total polysaccharide content, total phenolic content and total flavonoid content and the quantitative analysis was correlated with the methods established.
Orthogonal polynomials, a short introduction
Creators: name: Koornwinder, Tom H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42-01, 42C05, 33-01, 33C45

description: This paper is a short introduction to orthogonal polynomials, both the general theory and some special classes. It ends with some remarks about the usage of computer algebra for this theory.
description: v2: 23 pp., minor corrections
title: Statistical evaluation of image segmentation algorithms' responses employed to detect corrosion damage on stonework
Creators: name: Καψάλας Πέτρος
Publisher: name: Technical University of Crete
Year: 2006

description:  Problem Spesification -- 2. Segmentation Approaches -- 2.A. Theoritical Background of the Segmentation Algorithms, Image Filtering -- 2.B. Approaches Employed for Segmentation -- 2.C. Segmentation Results -- 3 Performance Evaluation Schemes -- 3. A. Theoritical Background and Related Work -- 3. B. Implementation -- 4. Results -- 4.1. Overview -- 4.2. Comparison of Algorithms' Performance Over the Ground Truth -- 4.3. Comparison in Terms of Performance Curves -- 4.4. Comparison of Population Differences for Various Structural and Cleaning Conditions -- 4.5. Shape Features Analysis under different Structural and Cleaning Conditions -- 4.6. Comparison of Motoring Modalities
On transverse invariants from Khovanov homology
Creators: name: Lipshitz, Robert
name: Ng, Lenhard
name: Sarkar, Sucharit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25, 57R17

description: O. Plamenevskaya associated to each transverse knot K an element of the Khovanov homology of K. In this paper, we give two refinements of Plamenevskaya's invariant, one valued in Bar-Natan's deformation of the Khovanov complex and another as a cohomotopy element of the Khovanov spectrum. We show that the first of these refinements is invariant under negative flypes and SZ moves; this implies that Plamenevskaya's class is also invariant under these moves. We go on to show that for small-crossing transverse knots K, both refinements are determined by the classical invariants of K.
description: 32 pages. V2: updated to accepted version
Untangling the frictions and cohesions between (digital) democracy and open source
Creators: name: Steele, Anne Lee
Publisher: name: Zenodo
Year: 2023
Subjects: digital democracy
open source

description: Presented at 'Moving frontiers of the demos: Enfranchisement, youth participation, and digital technologies' conference in Geneva, Switzerland, hosted at the Geneva Graduate Institute of International and Development Studies on 12-14 June 2023 Where does “open source” fit into discussions around (digital) democracy? When we discuss “digital transformations” by and for communities, from where – and for whom – are these transformations developing? In the present day, the notion of “open” seems to be ubiquitous: from OpenAI’s groundbreaking ventures in the field of Large Language Models (LLMs) (1), to the European Commission’s upcoming “open source software strategy” as a part of their Cyber Resilience Act (2). While these parallel developments highlight the urgency of the current discourse, the socio-technical histories of “open” have a much longer history that are important to untangle in order to understand both their frictions and cohesions (3). This presentation will aim to untangle these threads, as informed by ethnographic study of two open source communities: more than one year supporting an open source series of guides for data science called The Turing Way as a Community Manager, as well as more than 1.5 years of academic fieldwork with OpenStreetMap, a data-making project often called the “Wikipedia of maps”. While this work draws upon these overlapping strains of research, it seeks to push the debate surrounding digital democracy and digital democracy in an ethnographic direction, untangling understandings “openness” as they are lived in real time, as scaffolded by theories of bureaucratic technology, infrastructure, political economy, and humanitarianism.
Zwei Kanonbilder in Missalebänden des Nürnberger Katharinenklosters
Creators: name: Wilckens, Leonie Von
Publisher: name: Anzeiger des Germanischen Nationalmuseums
Year: 2017

description: Anzeiger des Germanischen Nationalmuseums, 1963: Anzeiger des Germanischen Nationalmuseums
title: A fast and effective multidimensional scaling approach for node localization in wireless sensor networks
Creators: name: Λατσούδας Γεώργιος
Publisher: name: Technical University of Crete
Year: 2006

description:  Introduction -- 2. Multidimensional Scaling -- 3. Fastmap -- 4. Proposed two-stage Approach -- 5. Costa's algorithm -- 6. Measurement noise model and Cramer-Rao Bound -- 7. Simulation results -- 8. Conclusions
title: Ανάλυση και εκτίμηση ευστάθειας απορριμματικών πρανών ΧΥΤΑ Αμαρίου
Creators: name: Χρυσικος Γεωργιος
Publisher: name: Technical University of Crete
Year: 2015

description: Η υγειονομική ταφή στο παρελθόν, αλλά και σήμερα, είναι η κύρια μέθοδος για τη διάθεση των αστικών στερεών αποβλήτων. Κατά τα τελευταία χρόνια, έχουν συμβεί σε αρκετές χώρες καταστροφικές αστοχίες πρανών, σε χώρους υγειονομικής ταφής απορριμμάτων, μερικές από αυτές θανατηφόρες. Για να αποφευχθούν φαινόμενα αστοχίας, τα οποία μπορούν να οδηγήσουν σε απώλειες ανθρώπινων ζωών αλλά και σε σημαντικές περιβαλλοντικές επιπτώσεις, απαιτείται περισσότερη έρευνα για τους μηχανισμούς και τις παραμέτρους που συνεισφέρουν αρνητικά στην ευστάθεια των απορριμματικών πρανών.
Στόχος της παρούσας διατριβής, είναι η ανάλυση της ευστάθειας των απορριμματικών πρανών του χώρου υγειονομικής ταφής απορριμμάτων Αμαρίου, με τη χρήση μεθόδων οριακής ισορροπίας και του λογισμικού GeoSlope. Ο ΧΥΤΑ Αμαρίου κλήθηκε να καλύψει τις ανάγκες του συνόλου της Περιφερειακής Ενότητας Ρεθύμνου, χωρίς αυτό να έχει ληφθεί υπόψη από τις αρχικές μελέτες. Οπότε, σε συνδυασμό με τις αστοχίες που παρατηρούνται στο πεδίο, κρίθηκε απαραίτητη η διεξαγωγή νέων μελετών.
Αρχικά, παρουσιάζονται τα διάφορα δεδομένα για τον εξεταζόμενο ΧΥΤΑ. Στη
συνέχεια, γίνεται μια ανασκόπηση της βιβλιογραφίας για τον αναμενόμενο τύπο αστοχίας σε ένα απορριμματικό πρανές, τους παράγοντες που επηρεάζουν την ευστάθεια του και τις συνήθεις μεθόδους ανάλυσης. Γίνεται, επίσης, εκτενής αναφορά στα διαθέσιμα βιβλιογραφικά δεδομένα για τις μηχανικές ιδιότητες των αστικών στερεών αποβλήτων. Στη συνέχεια, παρατίθεται η υπολογιστική μεθοδολογία που ακολουθήθηκε, βασισμένο στο λογισμικό SLOPE/W, αλλά και οι αριθμητικές τιμές που επελέγησαν για τις παραμέτρους, που είναι απαραίτητες για την διενέργεια της ανάλυσης ευστάθειας των πρανών της εξεταζόμενης γεωκατασκευής.
Στην επόμενη ενότητα, παρουσιάζονται τα αποτελέσματα της ντετερμινιστικής και στατιστικής ανάλυσης. Κατ’ αυτόν τον τρόπο, εισάγεται το πλαίσιο για την αξιολόγηση του κινδύνου της αστοχίας των πρανών του υπό εξέταση χώρου υγειονομικής ταφής. Επιπλέον, υπολογίζεται ο συντελεστής ασφαλείας για το απορριμματικό πρανές υπό την ταυτόχρονη εξέταση όλων των δυσμενών δράσεων.
Τα συμπεράσματα που εξάγονται από την ντετερμινιστική ανάλυση, αφορούν στην εύρεση της πιο κρίσιμης θέσης του ΧΥΤΑ, αλλά και την επίδραση των σεισμικών δράσεων στον συντελεστή ασφαλείας. Επίσης, από την στατιστική ανάλυση προέκυψαν διαγράμματα κατανομής των συντελεστών ασφαλείας, όταν οι μηχανικές ιδιότητες αλλά και το ύψος της πιεζομετρικής γραμμής παίρνουν τυχαίες τιμές από ένα προκαθορισμένο εύρος. Από την διεξαχθείσα διερεύνηση προέκυψε ότι ο ΧΥΤΑ είναι επαρκώς ευσταθής, αφού οι τιμές του
συντελεστή ασφαλείας είναι μεγαλύτερες από τα όρια που τίθενται από τον Ευρωκώδικα 7.
title: Συγκριτική ανάλυση παρεμβάσεων για τη δημιουργία ξενοδοχείων μηδενικής ενεργειακής κατανάλωσης για διάφορες κλιματικές ζώνες στην Ελλάδα
Creators: name: Ζουριδακη Μαρια
Publisher: name: Technical University of Crete
Year: 2015

description: Στις μέρες μας, η τουριστική βιομηχανία είναι ένας από τους πιο δυναμικούς και επικερδής κλάδους του τριτογενούς τομέα παραγωγής τόσο σε εθνικό, όσο και σε παγκόσμιο επίπεδο. Η Ελλάδα, προσελκύει κάθε χρόνο εκατομμύρια τουρίστες, τονώνοντας με αυτόν τον τρόπο κατά πολύ το Εθνικό Ακαθάριστο Εγχώριο Προϊόν. Παρ’ όλα αυτά, η κατανάλωση ενέργειας στα ξενοδοχεία είναι από τις υψηλότερες στον κτηριακό τομέα. Έτσι, σε διεθνές επίπεδο, η αύξηση της ανταγωνιστικότητας με παράλληλη μείωση του κόστους όσον αφορά τον περιβαλλοντικό σχεδιασμό των ξενοδοχειακών μονάδων, φαίνεται να αποτελεί μία πρόκληση. Σύμφωνα με αυτό, η Ευρωπαϊκή Ένωση έχει θέσει νέες βάσεις για την ενίσχυση του τουρισμού, μέσω των κοινοτικών Οδηγιών, θέτοντας ως στόχο να  παρατείνει την περίοδο λειτουργίας, τη βελτίωση των υφιστάμενων υποδομών και το πιο σημαντικό να ενθαρρυνθεί η εισαγωγή εναλλακτικών μορφών τουρισμού.
Σκοπός της εργασίας είναι να εστιάσουμε στην συγκριτική ανάλυση παρεμβάσεων για τη δημιουργία κτηρίων σχεδόν Μηδενικής Κατανάλωσης ενέργειας για διάφορες κλιματικές ζώνες σε όλη την Ελλάδα. Πιο συγκεκριμένα, τα υπό μελέτη κτήρια αφορούν ξενοδοχειακές μονάδες διάφορων τύπων (ένα αστικού τύπου, ένα παραλιακού τύπου και ένα ορεινού τύπου). Έτσι, μετρήσαμε την ενεργειακή κατανάλωση των ξενοδοχείων και τρέξαμε σενάρια βελτίωσης της ενεργειακής του απόδοσης ανά κλιματική ζώνη σε όλη την Ελλάδα. Πιο συγκεκριμένα τα σενάρια βελτίωσης που επιλέχθηκαν είναι η αλλαγή του φωτισμού σε LED σε όλο το ξενοδοχείο, η τοποθέτηση μόνωσης, η αλλαγή κουφωμάτων, η εγκατάσταση ηλιακού θερμοσίφωνα και η χρήση Φωτοβολταϊκών πλαισίων. Έπειτα, για τα επιλεχθέντα σενάρια κάναμε την ανάλυση κύκλου ζωής τους ως προς το κόστος τους και υπολογίσαμε την περίοδο αποπληρωμής του κάθε σεναρίου βελτίωσης, όπου αποδείχθηκε τελικά ότι είναι υλοποιήσιμο και βιώσιμο ένα ξενοδοχείο με σχεδόν μηδενική ενεργειακή κατανάλωση σε όλες τις κλιματικές ζώνες στην Ελλάδα και όλους τους τύπους μονάδων.
Mitofusin-2 in nucleus accumbens D2-MSNs regulates social dominance and neuronal function
Creators: name: Sriparna Ghosal
name: Gebara, Elias
name: Ramos-Fernández, Eva
name: Chioino, Alessandro
name: Grosse, Jocelyn
name: Schneider, Bernard
name: Zorzano, Antonio
name: Astori, Simone
name: Sandi, Carmen
Publisher: name: Zenodo
Year: 2022

description: The nucleus accumbens (NAc) is a brain hub regulating motivated behaviors, including social
 competitiveness. Mitochondrial function in the NAc is critically implicated in the association between
 anxiety and social competitiveness, and the mitochondrial fusion protein mitofusin 2 (Mfn2) in NAc
 neurons has been shown to regulate anxiety-related behaviors. However, it remains unexplored
 whether accumbal Mfn2 levels also affect social behavior and whether Mfn2 actions in the emotional
 and social domain are driven by distinct cell types. Here, we found that subordinate-prone highly
 anxious rats show reduced accumbal Mfn2 levels and that Mfn2 overexpression promotes dominant
 behavior. In mice, selective Mfn2 downregulation in NAc dopamine D2 receptor-expressing medium
 spiny neurons (D2-MSNs) induced social subordination, accompanied by reduced mitochondrial
 function and decreased neuronal excitability. Instead, D1-MSN-targeted Mfn2 downregulation
 affected competitive ability only transiently mainly by increases in anxiety-like behaviors. Our results
 assign dissociable cell-type specific roles to Mfn2 in the NAc in modulating social dominance and
 anxiety.
D2.16 White paper of science innovation through citizen science
Creators: name: Austen, Kat
name: Hölker, Franz
Publisher: name: Zenodo
Year: 2022
Subjects: Citizen science
Accelerator model
Mentoring
Co-design
science innovation
White Paper

description: This white paper details the potential of citizen science to foster innovation in science, from a sociological and political perspective based on the work carried out through the ACTION project and activities of projects during the ACTION Accelerator.
title: First laser spectroscopy of Mg⁺ at CRYRING@ESR and He-Like Boron at HITRAP
Creators: name: Mohr, Konstantin Thilo
Publisher: name: UNSPECIFIED
Year: 2022

description: At the storage ring CRYRING@ESR, which was installed at GSI in 2014, the infrastructure requirements for laser spectroscopy were established within the scope of this work. This includes the installation of the laser systems, the laser beam transport as well as the coupling units to the storage ring and the infrastructure for the superposition of ion and laser beam. Moreover, a Labview-based interface for laser frequency control was developed, which uses a Fizeau interferometer of type WSU10 (HighFinesse) as a frequency standard. In the first part of this work, the experimental conditions at CRYRING@ESR were investigated with respect to laser spectroscopic studies on singly charged Mg+-ions. Particularly, the properties of the electron cooler and possible applications of the laser Doppler-velocimetry are discussed. One very interesting aspect was the laser-based observation of the excitation of synchrotron oscillations due to a slight misalignment of electron and ion beam in the electron cooler section. The main objective of the laser spectroscopic studies on Mg+ was to investigate a possible polarization build-up and preservation by optical pumping. This technique is already well established at linear accelerator facilities around the world, but has not yet been demonstrated unambiguously in storage rings. While an efficient resonant population transfer of the complete ion ensemble between different hyperfine structure states in 25Mg+ was clearly proven, an enduring polarization of the ion beam was not obtained under the current experimental conditions. From the first analysis of the recorded data, novel approaches for further systematic studies of this aspect are discussed. In the second part of the thesis, collinear laser spectroscopy was performed at the HITRAP facility. In a proof-of-principle experiment it was demonstrated that the meta-stable triplet state 2 3S1 in helium-like 11B3+ ions is sufficiently populated for laser spectroscopic studies when produced by an electron beam ion source (EBIS) of the DREEBIT type. To analyze the data, a fit-model including relativistic configuration mixing in He-like systems was applied and the so far most accurate experimental values for the rest-frame transition frequencies of the fine-structure transitions 2s 3S1 <-> 2p 3P0 and 2s 3S1 <-> 2p 3P2 were reproduced with similar accuracy. Based on these results, more accurate measurements of He-like ions are ongoing at the Collinear Apparatus for Laser Spectroscopy and Applied Sciences (COALA) at TU Darmstadt.
title: Προσδιορισμός Geosmin και 2-Methylisoborneol με χρήση καινοτόμου τεχνικής μικροεκχύλισης στερεάς φάσης υπό συνθήκες κενού
Creators: name: Γλυκιωτη Μαρια-Λητω
Publisher: name: Technical University of Crete
Year: 2015

description: Η παρούσα πτυχιακή εργασία έγινε με σκοπό την απόδειξη ότι η μειωμένη πίεση κατά τη δειγματοληψία υπερκείμενης του δείγματος αέριας φάσης με χρήση μικροεκχύλισης στερεής φάσης προτού επέλθει ισορροπία μεταξύ της ίνας και της υπερκείμενης φάσης (non-equilibrium VAC-HSSPME) ενισχύει την κινητική διαδικασία σε σύγκριση με την εκτέλεση της δειγματοληψίας υπό συνθήκες ατμοσφαιρικής πίεσης. Σύμφωνα με τα πειράματα που έλαβαν χώρα στην πτυχιακή εργασία, παρατηρούμε ότι η εκχύλιση των πτητικών και ημιπτητικών ενώσεων, δηλαδή αυτές με χαμηλή και ενδιάμεσή τιμή συντελεστή Henry (
K
H ), ενισχύεται σε συνθήκες ελαττωμένης πίεσης. Με τον τρόπο αυτό αντιμετωπίζεται το εμπόδιο της αντίστασης της μεταφοράς μάζας από την υγρή στην αέρια φάση η οποία ελέγχει τον ρυθμό εξάτμισης των ημιπτητικών ενώσεων. Έτσι μειώνεται ο χρόνος εκχύλισης. Οι παράμετροι οι οποίες μελετήθηκαν και βελτιστοποιήθηκαν είναι το υλικό της επικάλυψης της ίνας, η επίδραση της ιοντικής ισχύς (NaCl), η θερμοκρασία, η ταχύτητα ανάδευσης, ο όγκος του δείγματος και ο χρόνος εκχύλισης στην απόδοση της VAC-HSSPME. Αποδείχτηκε ότι η VAC-HSSPME είναι ένα πολύ ισχυρό εργαλείο για την εκχύλιση ημιπτητικών ενώσεων από υδατικό περιβάλλον κάτω από ήπιες συνθήκες.
title: Εκτίμηση τοξικότητας ινδίου και αρσενικού σε απόβλητες οθόνες LCD
Creators: name: Παπαγεωργιου Παναγιωτα-Παρασκευη
Publisher: name: Technical University of Crete
Year: 2015

description: Η ραγδαία αύξηση της παραγωγής Ηλεκτρικών και Ηλεκτρονικών Συσκευών έχει οδηγήσει σε αντίστοιχα ταχύτατη ανάπτυξη Αποβλήτων Ηλεκτρικού και Ηλεκτρονικού Εξοπλισμού (ΑΗΗΕ) και αναμένεται να παρουσιάσει εντονότερη αυξητική τάση τα αμέσως επόμενα έτη. Λόγω της πολύπλοκης σύνθεσής τους, της επικινδυνότητάς τους, της ταχείας αύξησης του όγκου τους και των σημαντικών επιπτώσεων που προκαλεί η παραγωγή τους στο περιβάλλον και εξαιτίας της υψηλής κατανάλωσης ενέργειας, η διαχείριση των ΑΗΗΕ αποτελεί ένα σύγχρονο και πολυδιάστατο περιβαλλοντικό θέμα.
Ο κύριος άξονας της εργασίας αφορά το μέταλλο ίνδιο και το μεταλλοειδές αρσενικό, και πως αυτά επηρεάζουν την τοξικότητα και την επικινδυνότητα των οθονών LCDs (Liquid Crystal Display). Οι οθόνες LCD, που είναι μια συνηθισμένη μορφή επίπεδης οθόνης, απαντάται σε τηλεοράσεις, ηλεκτρονικούς υπολογιστές, κινητά και πληθώρα άλλων συσκευών. Η σύστασή τους είναι ιδιαίτερα πολύπλοκη μιας και απαρτίζονται από πολλές επικίνδυνες ουσίες, όπως το αρσενικό, αλλά και από πολύτιμες ουσίες, όπως το ίνδιο. Η διαχείρισή τους βρίσκεται ακόμα σε εξέλιξη, ενώ από έρευνες έχει διαπιστωθεί ότι η απομάκρυνση επικινδύνων ουσιών, η ανάκτηση πολύτιμων υλικών αλλά και η ανακύκλωση του γυαλιού των LCD πάνελ είναι προτιμητέες αλλά και εφαρμόσιμες διεργασίες υπό προϋποθέσεις. Ωστόσο για τα δύο μέταλλα που εξετάστηκαν δεν υφίσταται το ανάλογο νομοθετικό πλαίσιο, ούτε έχει γίνει εκτενής έρευνα.
Έμφαση λοιπόν δίνεται αφενός στην διαχείριση, την ασφαλή εναπόθεση αλλά και τα επιτρεπτά όρια των ρυπογόνων ουσιών που εμπεριέχονται στις οθόνες γενικά, αλλά κυρίως στα ιδιαίτερα χαρακτηριστικά του αρσενικού και του ινδίου και στην προσπάθεια αντικατάστασης του πρώτου και ανάκτησης του δεύτερου. Όλα αυτά κοινό στόχο έχουν να μειώσουν τους κινδύνους που απειλούν τόσο το περιβάλλον, όσο και την ανθρώπινη υγεία. Για το λόγο αυτό στα πλαίσια της εργασίας ακολουθήθηκε μια πειραματική διαδικασία και τα κατάλληλα βήματα για τη διαλογή και τον διαχωρισμό του γυαλιού (αποσυναρμολόγηση, τεμαχισμός, κονιορτοποίηση, χώνευση, ανάλυση) οθονών LCD από ηλεκτρονικές συσκευές που κυκλοφορούν σήμερα στην αγορά, με απώτερο στόχο να εξεταστούν οι συγκεντρώσεις του αρσενικού και του ινδίου.
title: Τεχνολογίες αυτόματης αναγνώρισης προϊόντων με χρήση ραδιοκυμάτων για την ολοκλήρωση της εφοδιαστικής αλυσίδας
Creators: name: Πρωτονοτάριος Δημήτριος
Publisher: name: Technical University of Crete
Year: 2004

description: Μη διαθέσιμο
title: Τεχνικοοικονομική μελέτη επενδυτικού έργου κατασκευής μονάδας επεξεργασίας κτηνοτροφικών προιόντων
Creators: name: Κατερινάκης Βαγγέλης
name: Μακρής Βαγγέλης
Publisher: name: Technical University of Crete
Year: 1996

description: Μη διαθέσιμο