cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Current Advances in Chemistry and Biochemistry Vol. 6
Creators: name: Pinki Chakraborty
name: Singh, Poonam
name: Singh, Jyoti
name: Achala Tripathi
Publisher: name: Zenodo
Year: 2021
Subjects: Zn-Y hydroxide
UV properties
UV-absorbent molecules
PL spectroscopic techniques

description: The layered Zn-Y hydroxides with succinate, adipate, sebacate, and benzoate as interlayer anions were synthesised with the aim of combining organic molecules with inorganic structures to create hybrid materials that combine the benefits of both components in one material. Analytical techniques such as PXRD, FTIR, and TGA were used to classify the structures. UV-visible and PL spectroscopic techniques were used to test the optical properties of these samples. Although the monolayer structure inside the interlayer for succinate, adipate and sebacate could be deduced from their PXRD patterns and FTIR spectra, tilted bilayers of benzoate were discovered in the interlayer between Zn-Y hydroxides. The interlayer separation of the intercalated samples varied linearly with the number of -CH2 groups, n, in the aliphatic chain of dicarboxylates. As compared to the acetate intercalated method, intercalated samples showed better thermal stability. Surface defects of the Zn-Y hydroxide system were observed as luminescence emission in the visible region of the spectrum, in addition to the π-π* transitions from carboxylates. Using UV-visible and PL spectroscopic techniques, the presence of organic anions in the inorganic interlayer has also been demonstrated.
Dipole-dipole interactions in optical lattices do not follow an inverse cube power law
Creators: name: Wall, M. L.
name: Carr, L. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the effective dipole-dipole interactions in ultracold quantum gases on optical lattices as a function of asymmetry in confinement along the principal axes of the lattice. In particular, we study the matrix elements of the dipole-dipole interaction in the basis of lowest band Wannier functions which serve as a set of low-energy states for many-body physics on the lattice. We demonstrate that the effective interaction between dipoles in an optical lattice is non-algebraic in the inter-particle separation at short to medium distance on the lattice scale and has a long-range power-law tail, in contrast to the pure power-law behavior of the dipole-dipole interaction in free space. The modifications to the free-space interaction can be sizable; we identify differences of up to 36% from the free-space interaction at the nearest-neighbor distance in quasi-1D arrangements. The interaction difference depends essentially on asymmetry in confinement, due to the d-wave anisotropy of the dipole-dipole interaction. Our results do not depend on statistics, applying to both dipolar Bose-Einstein condensates and degenerate Fermi gases. Using matrix product state simulations, we demonstrate that use of the correct lattice dipolar interaction leads to significant deviations from many-body predictions using the free-space interaction. Our results are relevant to up and coming experiments with ultracold heteronuclear molecules, Rydberg atoms, and strongly magnetic atoms in optical lattices.
description: 22 pages, 6 figures
Medical student experiences of the first full clinical year, a focus on learning in the context of transitions “Absorbing and being Absorbed”
Creators: name: Ryan, Vanessa
name: Koshila Kumar
name: Jones, Alison
Publisher: name: F1000 Research Limited
Year: 2023

description: Health professions education is often referred to as a journey where students are prepared for seamless progression from one year to the next. The reality for students is they navigate complex and ambiguous contexts, particularly when learning transitions into the health system.
 Aimed at understanding how students optimise clinical learning in complex health environments, this PhD study examined learning experiences form a student and supervisor perspective in the third year of a four year medical course, where students begin to get fully immersed in clinical settings.
 Health professions education is often referred to as a journey where students are prepared for seamless progression from one year to the next. The reality for students is they navigate complex and ambiguous contexts, particularly when learning transitions into the health system.
 Aimed at understanding how students optimise clinical learning in complex health environments, this PhD study examined learning experiences form a student and supervisor perspective in the third year of a four year medical course, where students begin to get fully immersed in clinical settings.

 Optimising clinical learning involved the use of several different types of knowledge and skills that could only be learned through immersion in real life experiences. Learning what knowledge and skills they needed to apply, relied on students participating, observing, rehearsing, and contributing to the workplace. As expectations and non-codified knowledge was acquired, students reported learning gains. They continued to enact and adjust certain skills as they transitioned through different learning landscapes. Learning gains and affordances proportionately increased as students demonstrated these abilities. Developing and applying these abilities underpinned a ‘learning investment criteria’ where optimal learning and teaching takes place in the clinical environment.
title: Implementation of a tumor growth prediction system in reconfigurable logic
title: Υλοποίηση σε αναδιατασσόμενη λογική συστήματος πρόγνωσης εξέλιξης όγκου
Creators: name: Μαλαβαζος Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2018

description: In the last few years, the biomedical community is increasingly taking advantage of the increasing computational power, both to manage and analyze data and to model biological processes. Biomedical software applications usually require significant computational power, especially when they include the processing and analysis of large amounts of data, such as medical image sequences. This Master Thesis targets the acceleration of three different mathematical models, which are developed in the Technical University of Crete to model and predict the spatio-temporal evolution of glioma, using Reconfigurable Logic. Glioma is a rapidly evolving type of brain cancer, well known for its aggressive and diffusive behavior. The modeling applications presented in this Thesis fall under the category of multi-compartmental continuum approaches and aim to simulate the spatio-temporal evolution of a glioma tumor in an isotropic and heterogeneous brain tissue, which consists of different anatomic structures. The first model is the Oxygen-Glucose Diffusion-Proliferation 2D Model, simulating the proliferative cells and the necrotic core as a result of hypoxic and hypoglycemic-cells death, in single MRI images. The second is the Simple Diffusion-Proliferation 3D Model, which simulates only the proliferative cells in a sequence of MRI slices. The last is the Oxygen-Glucose Diffusion-Proliferation 3D Model, which simulates the same behaviors of the glioma as the 2D Model, in a sequence of MRI slices. The hardware acceleration is achieved using the Trenz platform, model TE0808 UltraSOM, which consists of a Xilinx Zynq UltraScale+ FPGA and an ARM Cortex A-53. The FPGA implementations of these Models are compared with the corresponding OpenMP software implementations on two different high-end Server systems, with up to 40 threads (Hyper-Threading). The results showed that the FPGA accelerators achieved runtime speedup and are up to 14 times more power efficient.
Modeling and Controlling the Spread of Epidemic with Various Social and Economic Scenarios
Creators: name: Lukyanets, S. P.
name: Gandzha, I. S.
name: Kliushnichenko, O. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Economics (econ.GN)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Economics and business
subject: FOS: Biological sciences

description: We propose a dynamical model for describing the spread of epidemics. This model is an extension of the SIQR (susceptible-infected-quarantined-recovered) and SIRP (susceptible-infected-recovered-pathogen) models used earlier to describe various scenarios of epidemic spreading. As compared to the basic SIR model, our model takes into account two possible routes of contagion transmission: direct from the infected compartment to the susceptible compartment and indirect via some intermediate medium or fomites. Transmission rates are estimated in terms of average distances between the individuals in selected social environments and characteristic time spans for which the individuals stay in each of these environments. We also introduce a collective economic resource associated with the average amount of money or income per individual to describe the socioeconomic interplay between the spreading process and the resource available to infected individuals. The epidemic-resource coupling is supposed to be of activation type, with the recovery rate governed by the Arrhenius-like law. Our model brings an advantage of building various control strategies to mitigate the effect of epidemic and can be applied, in particular, to modeling the spread of COVID-19.
description: 14 pages, 6 figures, 5 tables
Reconcile the AMS-02 positron fraction and Fermi-LAT/HESS total $e^{\pm}$ spectra by the primary electron spectrum hardening
Creators: name: Yuan, Qiang
name: Bi, Xiao-Jun
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recently reported positron fraction up to $\sim 350$ GeV by AMS-02 seems to have tension with the total electron/positron spectra detected by Fermi and HESS, for either pulsar or dark matter annihilation/decay scenario as the primary positron sources. In this work we will show that the tension will be removed by an adjustment of the primary electron spectrum. If the primary electron spectrum becomes harder above $\sim50$ GeV, similar as the cosmic ray nuclei spectrum, the AMS-02 positron fraction and Fermi/HESS data can be well fitted by both the pulsar and dark matter models. This result indicates that there should be a common origin of the cosmic ray nuclei and the primary electrons. Furthermore, this study also implies that the properties of the extra sources derived from the fitting to the AMS-02 data should depend on the form of background.
description: 9 pages, 8 figures and 3 tables. Published in Physics Letters B
title: Μοντέρνο "γένους θηλυκού" - πρωτοπορία και διαχρονικότητα στο έργο τεσσάρων γυναικών του Μοντερνισμού
title: Modern women - originality and timelessness in the work of four modernist women
Creators: name: Τσακιρη Ειρηνη
name: Τομαρα Αγαθη-Σταυρουλα
Publisher: name: Technical University of Crete
Year: 2019

description: Σκοπός της εργασίας είναι η διερεύνηση του έργου τεσσάρων γυναικών αρχιτεκτόνων του Μοντερνισμού, επικεντρωμένη στις παρεκκλίσεις που τυχόν αυτό εμφανίζει ως προς τις μοντερνιστικές αρχές, μαζί με μια προσπάθεια ερμηνείας των παρεκκλίσεων αυτών, καθώς και της περιθωριοποίησης των τεσσάρων γυναικών αρχιτεκτόνων στην ιστορία της αρχιτεκτονικής. Αντικείμενο της εργασίας είναι το έργο τεσσάρων γυναικών αρχιτεκτόνων του μοντερνισμού. Από τη Lilly Reich και την κρυφή της παρουσία στα έργα του Mies Van der Rohe, στην περιθωριοποιημένη ιστορικά Ιταλίδα Lina Bo Bardi, καθώς και στις δύο πολύ σημαντικές και αμφιλεγόμενες ως προς τη σχέση τους με το έργο του Le Corbusier, Eileen Gray και Charlotte Perriand. Γίνεται προσπάθεια να αναδειχθεί η συμβολή των γυναικών στη διαμόρφωση συγκεκριμένων πτυχών της αρχιτεκτονικής σκέψης, ενώ ταυτόχρονα και παράλληλα αναδεικνύονται οι γυναίκες ως αντικείμενα μελέτης. Το έργο των τεσσάρων γυναικών εξετάζεται βάσει των κειμένων από σύγχρονους σε αυτές ιστοριογράφους και θεωρητικούς της αρχιτεκτονικής (Bruno Zevi, Leonardo Benevolo, Sigfried Giedion, Henry-Russell Hitchcock, Reyner Banham) που συντάσσονται με  το πνεύμα  του Μοντέρνου.
Η παρούσα εργασία θα επιχειρήσει να απαντήσει στα παρακάτω ερωτήματα:
Που εντοπίζεται η θέση της γυναίκας στο Μοντέρνο κίνημα; Σε τι βαθμό υπάρχει συνέπεια στη σχεδιαστική τους ταυτότητα ως προς το Μοντέρνο κίνημα; Επηρέασαν την αρχιτεκτονική της εποχής τους μέσα από το έργο τους; Σε ποιους επιμέρους τομείς σχεδιασμού επικεντρώνονται οι σχεδιαστικές διαφοροποιήσεις από τις μοντερνιστικές αρχές; Διακρίνεται κοινή προσέγγιση στις απαντήσεις τους; Στη διάρκεια της επαγγελματικής τους δραστηριότητας, υπήρξε αρχιτεκτονική σύνδεση με άνδρες ομοτέχνους τους; Βάσει αυτών των τομών επηρεάστηκαν ή επηρέασαν αρχιτεκτονικά; Γιατί οι γυναίκες του Μοντέρνου κινήματος παραμένουν περιθωριοποιημένες στην αρχιτεκτονική ιστορία, ενώ συμμετείχαν ενεργά στην επαγγελματική πρακτική της αρχιτεκτονικής; Πότε ξεκίνησε ο διάλογος της αρχιτεκτονικής με το φύλο; Υπάρχει διαφορά στην αρχιτεκτονική προσέγγιση των δύο φύλων; Πώς εντάσσεται το φύλο στην αρχιτεκτονική σήμερα;
Einundsiebzigster Jahresbericht des Germanischen Nationalmuseum. Nürnberg, 31. Dezember 1924
Creators: name: Zimmermann, E. Heinrich
Publisher: name: Anzeiger des Germanischen Nationalmuseums
Year: 2017

description: Anzeiger des Germanischen Nationalmuseums, 1924-25: Anzeiger des Germanischen Nationalmuseums
M3PT: A Multi-Modal Model for POI Tagging
Creators: name: Yang, Jingsong
name: Han, Guanzhou
name: Yang, Deqing
name: Liu, Jingping
name: Xiao, Yanghua
name: Xu, Xiang
name: Wu, Baohua
name: Ni, Shenghua
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: H.3.0

description: POI tagging aims to annotate a point of interest (POI) with some informative tags, which facilitates many services related to POIs, including search, recommendation, and so on. Most of the existing solutions neglect the significance of POI images and seldom fuse the textual and visual features of POIs, resulting in suboptimal tagging performance. In this paper, we propose a novel Multi-Modal Model for POI Tagging, namely M3PT, which achieves enhanced POI tagging through fusing the target POI's textual and visual features, and the precise matching between the multi-modal representations. Specifically, we first devise a domain-adaptive image encoder (DIE) to obtain the image embeddings aligned to their gold tags' semantics. Then, in M3PT's text-image fusion module (TIF), the textual and visual representations are fully fused into the POIs' content embeddings for the subsequent matching. In addition, we adopt a contrastive learning strategy to further bridge the gap between the representations of different modalities. To evaluate the tagging models' performance, we have constructed two high-quality POI tagging datasets from the real-world business scenario of Ali Fliggy. Upon the datasets, we conducted the extensive experiments to demonstrate our model's advantage over the baselines of uni-modality and multi-modality, and verify the effectiveness of important components in M3PT, including DIE, TIF and the contrastive learning strategy.
description: Accepted by KDD 2023
CO2 flux emissions from the Earth’s most actively degassing volcanoes, 2005–2015
Creators: name: Aiuppa, Alessandro
name: Fischer, Tobias
name: Plank, Terry A.
name: Bani, Philipson
Publisher: name: Columbia University
Year: 2019
Subjects: subject: Geochemistry
subject: FOS: Earth and related environmental sciences
subject: Volcanology
subject: Volcanoes
subject: Atmospheric carbon dioxide

description: The global carbon dioxide (CO2) flux from subaerial volcanoes remains poorly quantified, limiting our understanding of the deep carbon cycle during geologic time and in modern Earth. Past attempts to extrapolate the global volcanic CO2 flux have been biased by observations being available for a relatively small number of accessible volcanoes. Here, we propose that the strong, but yet unmeasured, CO2 emissions from several remote degassing volcanoes worldwide can be predicted using regional/global relationships between the CO2/ST ratio of volcanic gases and whole-rock trace element compositions (e.g., Ba/La). From these globally linked gas/rock compositions, we predict the CO2/ST gas ratio of 34 top-degassing remote volcanoes with no available gas measurements. By scaling to volcanic SO2 fluxes from a global catalogue, we estimate a cumulative “unmeasured” CO2 output of 11.4 ± 1.1 Mt/ yr (or 0.26 ± 0.02·1012 mol/yr). In combination with the measured CO2 output of 27.4 ± 3.6 Mt/yr (or 0.62 ± 0.08·1012 mol/yr), our results constrain the time-averaged (2005–2015) cumulative CO2 flux from the Earth’s 91 most actively degassing subaerial volcanoes at 38.7 ± 2.9 Mt/yr (or 0.88 ± 0.06·1012 mol/yr).
title: Η χωρική έκφραση του εγκλεισμού: μια αρχιτεκτονική προσέγγιση των καταστημάτων κράτησης
title: Spatial expression of incarceration: an architectural approach to detention facilities
Creators: name: Νικολαου-Φραγκου Λητω
Publisher: name: Technical University of Crete
Year: 2019

description:  Στην εργασία αυτή μελετάται η χωρική έκφραση του εγκλεισμού στα καταστήματα κράτησης. Αρχικά γίνεται μια ιστορική αναδρομή ως προς την εξέλιξη της φυλακής και τις επιρροές που είχε από τον κοινωνικοπολιτικό χώρο από την αρχή του θεσμού μέχρι και σήμερα. Στην συνέχεια, εξετάζεται ως προς την ετεροτοπική της φύση, όπως αυτή αναπτύχθηκε από τον Foucault και η λειτουργική σημασία της επιτήρησης. Αναφέρονται τα βασικά σωφρονιστικά συστήματα που επικράτησαν και πως αυτά επηρέασαν στον σχεδιασμό των καταστημάτων κράτησης. Έπειτα, μέσω συγκεκριμένων παραδειγμάτων κατηγοριοποιούνται οι αρχιτεκτονικές τυπολογίες που προκύπτουν και εξετάζεται η σημασία της σχέσης τους με την γύρω περιοχή στην οποία βρίσκονται. Τέλος γίνεται μια αναφορά στον κινηματογράφο και την τηλεόραση ως βασική πηγή πληροφόρησης του κοινωνικού συνόλου αλλά και ως προς την αρχιτεκτονική τους σκοπιά.
The Poisson equation at second order in relativistic cosmology
Creators: name: Hidalgo, Juan Carlos
name: Christopherson, Adam J.
name: Malik, Karim A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the relativistic constraint equation which relates the curvature perturbation to the matter density contrast at second order in cosmological perturbation theory. This relativistic "second order Poisson equation" is presented in a gauge where the hydrodynamical inhomogeneities coincide with their Newtonian counterparts exactly for a perfect fluid with constant equation of state. We use this constraint to introduce primordial non-Gaussianity in the density contrast in the framework of General Relativity. We then derive expressions that can be used as initial conditions of N-body codes for structure formation which probe the observable signature of primordial non-Gaussianity in the statistics of the evolved matter density field.
description: V2: New appendix shows consistency with previous work. Matches version accepted by JCAP
Handling and Shipping Potatoes to Processing Plants in Pallet Boxes and Burlap Bags
Creators: name: Pawski, Leonard
name: Findlen, Herbert
name: Pawski, Leonard
name: Findlen, Herbert
Publisher: name: Unknown
Year: 1961
Subjects: subject: Crop Production/Industries
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpts from the report Introduction: Increased use of potatoes for processing into chips, flakes, granules, and other products has created a greater interest in bulk shipping of potatoes in pallet boxes rather than in 100-pound burlap bags from the grower's storage and packinghouse to the processing plant. One of the methods under development for several years and used today on a limited scale is shipping in 1-ton collapsible wooden pallet boxes. A study was undertaken to compare costs of handling in pallet boxes and 100-pound bags, from packing and handling by the grower through receiving and handling by the processor, with the objective of developing better handling methods and reducing costs. This study considers the costs of labor, equipment, materials, shipping full containers to the processor, returning empty containers to the grower, space, injury of the potatoes, and truck tie-up time.
Exploratory Landscape Analysis is Strongly Sensitive to the Sampling Strategy
Creators: name: Renau, Quentin
name: Doerr, Carola
name: Dreo, Johann
name: Doerr, Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Exploratory landscape analysis (ELA) supports supervised learning approaches for automated algorithm selection and configuration by providing sets of features that quantify the most relevant characteristics of the optimization problem at hand. In black-box optimization, where an explicit problem representation is not available, the feature values need to be approximated from a small number of sample points. In practice, uniformly sampled random point sets and Latin hypercube constructions are commonly used sampling strategies. In this work, we analyze how the sampling method and the sample size influence the quality of the feature value approximations and how this quality impacts the accuracy of a standard classification task. While, not unexpectedly, increasing the number of sample points gives more robust estimates for the feature values, to our surprise we find that the feature value approximations for different sampling strategies do not converge to the same value. This implies that approximated feature values cannot be interpreted independently of the underlying sampling strategy. As our classification experiments show, this also implies that the feature approximations used for training a classifier must stem from the same sampling strategy as those used for the actual classification tasks. As a side result we show that classifiers trained with feature values approximated by Sobol' sequences achieve higher accuracy than any of the standard sampling techniques. This may indicate improvement potential for ELA-trained machine learning models.
description: To appear in the proceedings of the 16th International Conference on Parallel Problem Solving from Nature (PPSN 2020)
On non-abelian U-duality of 11D backgrounds
Creators: name: Musaev, Edvard T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this letter we generalised the procedure of non-abelian T-duality based on a B-shift and a sequence of formal abelian T-dualities in non-isometric directions to 11-dimensional backgrounds. This consists of a C-shift followed by either a formal U-duality transformation or taking a IIB section. We investigate restrictions and applicability of the procedure and find that it can provide supergravity solutions for the SL(5) exceptional Drinfeld algebra only when a spectator field is present, which is consistent with examples known in the literature.
description: 20 pages, 7 figures. V2: added a discussion of restrictions and applicability of the suggested NAUD procedure
Flurteilung und Territorien in den römischen Rheinlanden
Creators: name: Schulten, [?]
Publisher: name: Bonner Jahrbücher
Year: 2017

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 103 (1898): Bonner Jahrbücher : Jahrbücher des Vereins von Altertumsfreunden im Rheinlande
title: Alvaro Siza και Peter Eisenman: δύο διαφορετικές προσεγγίσεις της αρχιτεκτονικής στα τέλη του 20ου αιώνα
title: Alvaro Siza and Peter Eisenman: two different approaches of architecture at the end of the 20th century
Creators: name: Μπρατσος Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2019

description: Η εργασία ερευνά ορισμένα από τα έργα και τα κείμενα των Alvaro Siza και Peter Eisenman, με στόχο την ανάδειξη της μεθοδολογίας, της αντίληψης και της γενικότερης φιλοσοφίας τους. Πρόκειται για δύο αρχιτέκτονες που ανήκουν στην ίδια γενιά και έχουν επιδράσει καθοριστικά στην εξέλιξη της Αρχιτεκτονικής μετά το δεύτερο μισό του 20ου αιώνα. Στο τέλος, θα γίνει μια προσπάθεια σύγκρισής τους, όπου οι εμφανείς διαφορές και βαθιές ομοιότητές τους θα οδηγήσουν σε γόνιμα ερωτήματα και συμπεράσματα.
Neural Invertible Variable-degree Optical Aberrations Correction
Creators: name: Cui, Shuang
name: Wang, Bingnan
name: Zheng, Quan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Optical aberrations of optical systems cause significant degradation of imaging quality. Aberration correction by sophisticated lens designs and special glass materials generally incurs high cost of manufacturing and the increase in the weight of optical systems, thus recent work has shifted to aberration correction with deep learning-based post-processing. Though real-world optical aberrations vary in degree, existing methods cannot eliminate variable-degree aberrations well, especially for the severe degrees of degradation. Also, previous methods use a single feed-forward neural network and suffer from information loss in the output. To address the issues, we propose a novel aberration correction method with an invertible architecture by leveraging its information-lossless property. Within the architecture, we develop conditional invertible blocks to allow the processing of aberrations with variable degrees. Our method is evaluated on both a synthetic dataset from physics-based imaging simulation and a real captured dataset. Quantitative and qualitative experimental results demonstrate that our method outperforms compared methods in correcting variable-degree optical aberrations.
Sum-free sets which are closed under multiplicative inverses
Creators: name: Benjamin, Katherine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B75

description: Let $A$ be a subset of a finite field $\mathbb{F}$. When $\mathbb{F}$ has prime order, we show that there is an absolute constant $c > 0$ such that, if $A$ is both sum-free and equal to the set of its multiplicative inverses, then $|A| < (0.25 - c)|\mathbb{F}| + o(|\mathbb{F}|)$ as $|\mathbb{F}| \rightarrow \infty$. We contrast this with the result that such sets exist with size at least $0.25|\mathbb{F}| - o(|\mathbb{F}|)$ when $\mathbb{F}$ has characteristic $2$.
description: 12 pages, 1 figure. Some computations are omitted but can be accessed through the source file
Face numbers of Engström representations of matroids
Creators: name: Klee, Steven
name: Stamps, Matthew T.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: A classic problem in matroid theory is to find subspace arrangements, specifically hyperplane and pseudosphere arrangements, whose intersection posets are isomorphic to a prescribed geometric lattice. Engström recently showed how to construct an infinite family of such subspace arrangements, indexed by the set of finite regular CW complexes. In this note, we compute the face numbers of these representations (in terms of the face numbers of the indexing complexes) and give upper bounds on the total number of faces in these objects. In particular, we show that, for a fixed rank, the total number of faces in the Engström representation corresponding to a codimension one homotopy sphere arrangement is bounded above by a polynomial in the number of elements of the matroid with degree one less than its rank.
description: 9 pages, 4 figures
A Predictive Model using Machine Learning Algorithm in Identifying Students Probability on Passing Semestral Course
Creators: name: Doctor, Anabella C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: This study aims to determine a predictive model to learn students probability to pass their courses taken at the earliest stage of the semester. To successfully discover a good predictive model with high acceptability, accurate, and precision rate which delivers a useful outcome for decision making in education systems, in improving the processes of conveying knowledge and uplifting students academic performance, the proponent applies and strictly followed the CRISP-DM (Cross-Industry Standard Process for Data Mining) methodology. This study employs classification for data mining techniques, and decision tree for algorithm. With the utilization of the newly discovered predictive model, the prediction of students probabilities to pass the current courses they take gives 0.7619 accuracy, 0.8333 precision, 0.8823 recall, and 0.8571 f1 score, which shows that the model used in the prediction is reliable, accurate, and recommendable. Considering the indicators and the results, it can be noted that the prediction model used in this study is highly acceptable. The data mining techniques provides effective and efficient innovative tools in analyzing and predicting student performances. The model used in this study will greatly affect the way educators understand and identify the weakness of their students in the class, the way they improved the effectiveness of their learning processes gearing to their students, bring down academic failure rates, and help institution administrators modify their learning system outcomes. Further study for the inclusion of some students demographic information, vast amount of data within the dataset, automated and manual process of predictive criteria indicators where the students can regulate to which criteria, they must improve more for them to pass their courses taken at the end of the semester as early as midterm period are highly needed.
Generalized Baumslag-Solitar groups: rank and finite index subgroups
Creators: name: Levitt, Gilbert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: A generalized Baumslag-Solitar (GBS) group is a finitely generated group acting on a tree with infinite cyclic edge and vertex stabilizers. We show how to determine effectively the rank (minimal cardinality of a generating set) of a GBS group; as a consequence, one can compute the rank of the mapping torus of a finite order outer automorphism of a free group $F_n$. We also show that the rank of a finite index subgroup of a GBS group G cannot be smaller than the rank of G. We determine which GBS groups are large (some finite index subgroup maps onto $F_2$), and we solve the commensurability problem (deciding whether two groups have isomorphic finite index subgroups) in a particular family of GBS groups.
description: Final version, to appear in Annales Institut Fourier
title: Το Παλίμψηστον ενός κενού. Σκέψεις με αφορμή ένα κενό στο ενετικό λιμάνι Χανίων
title: The Palimpsest of an empty space. Thoughts on an empty space at the Venetian harbor of Chania
Creators: name: Γαραντζιωτη Χαϊδω
Publisher: name: Technical University of Crete
Year: 2019

description: Σκοπός της ερευνητικής εργασίας είναι η διερεύνηση της ανθεκτικότητας του αστικού κενού σε ένα κομβικό σημείο του Ενετικού λιμανιού.
Αντικείμενο της εργασίας αποτελεί ο κενός χώρος που περιβάλλει το Τέμενος Κιουτσούκ Χασάν ( Γιαλί Tζαμισί), και η προσπάθεια ανάγνωσης του σε συσχετισμό με την ιστορία της περιοχής από την ενετοκρατία έως σήμερα.
Η πλήρωση του και η εξέλιξη της μορφής του χρονικά συνθέτει και τον ιστορικό χάρτη της πόλης των Χανίων, καθώς είναι άρρηκτα συνδεδεμένη με τις εκάστοτε ιστορικές και κοινωνικές συνθήκες.
Η ερμηνεία που θα επιχειρηθεί βασίζεται στην ανάλυση και την μελέτη του αστικού κενού στο Ενετικό λιμάνι, δίπλα από το Γιαλί Τζαμισί, παράλληλα με την ιστορική εξέλιξη του χώρου, τους αστικούς συντελεστές και τα όρια του χώρου, ορατά και μη.
Για το λόγο αυτό θα μελετηθεί ανά χρονική περίοδο, σε συνάρτηση με την εκάστοτε εξουσία-κατακτητή.
Τέλος έπειτα από αρχειακή έρευνα θα επιχειρηθεί εξαγωγή συμπερασμάτων για το αν παράγοντες όπως η συλλογική μνήμη και το διαφορετικό αποτύπωμα του χρόνου σε ιστορική και μοντέρνα αρχιτεκτονική, μόρφωσαν το κενό όπως συναντάται στο παρόν, έπειτα από την κατεδάφιση του τουριστικού περίπτερου , έργο του Πατρόκλου Καραντινού (1965) το οποίο αποτελούσε επέκταση του τεμένους.
Bright and Dark Solitons on the Surface of Finite-Depth Fluid Below the Modulation Instability Threshold
Creators: name: Gandzha, I. S.
name: Sedletsky, Yu. V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We use the high-order nonlinear Schrödinger equation (NLSE) derived to model the evolution of slowly modulated wave trains with narrow spectrum on the surface of ideal finite-depth fluid. This equation is the finite-depth counterpart of celebrated Dysthe's equation, which is usually used for the same purpose in the case of infinite depth. We demonstrate that this generalized equation admits bright soliton solutions for depths below the modulation instability threshold $kh\approx 1.363$ ($k$ being the carrier wave number and $h$ the undisturbed fluid depth), which is not possible in the case of standard NLSE. These bright solitons can exist along with the dark solitons that have recently been observed in a water wave tank [Phys. Rev. Lett. 110, 124101 (2013)].
description: 5 pages, 4 figures. arXiv admin note: text overlap with arXiv:1501.05933
title: Μη τόπος στον κινηματογράφο του Jacques Tati
title: The non-places of Jacques Tati
Creators: name: Σορα Ελευθερια
Publisher: name: Technical University of Crete
Year: 2019

description: H σχέση αρχιτεκτονικής και κινηματογράφου αποτελεί διαχρονικά, αντικείμενο μελέτης από θεωρητικούς και των δυο τεχνών. Αρχιτέκτονες και σκηνοθέτες διανύουν παράλληλες τροχιές καθώς και οι δύο παράγουν χώρο, άλλοτε πραγματικό και άλλοτε κινηματογραφικό.
O Dietrich Neumann  ορίζει την σχέση αρχιτεκτονικής και κινηματογράφου αναφερόμενος στην παραγωγή χώρου στο σινεμά, και συνοψίζει τους τρείς βασικούς ρόλους της φιλμικής αρχιτεκτονικής :
1.	Σαν εργαλείο προβληματισμού και σχολιασμού των σύγχρονων αρχιτεκτονικών εξελίξεων
2.	Σαν πεδίο δοκιμών πρωτοποριακών οραμάτων
3.	Σαν τόπος στον οποίο μια διαφορετική προσέγγιση της τέχνης και της πρακτικής της αρχιτεκτονικής μπορεί να πραγματοποιηθεί
Οι ταινίες του Jacques Tati, Mon Oncle και Playtime οι οποίες αναλύονται στη συνέχεια, μπορούν να αποτελέσουν σημαντικό εργαλείο προβληματισμού και σχολιασμού της αρχιτεκτονικής. Ο Jacques Tati ήταν ένας από τους μεγαλύτερους ευρωπαίους σκηνοθέτες του 20ου αιώνα, θεωρούσε τον κινηματογραφικό του χώρο σημαντικότερο ακόμα και από τους ηθοποιούς. Στο σύνολο του έργου του μπορούμε να εντοπίσουμε χώρους οι οποίοι αντικατοπτρίζουν την άποψη του σκηνοθέτη για την σύγχρονη αρχιτεκτονική. Στις περισσότερες περιπτώσεις οι ταινίες του αποτελούν κριτική στην μοντέρνα αρχιτεκτονική, την ομοιογένεια   των πόλεων και την αίσθηση του ανοίκειου η οποία την χαρακτηρίζει. Οι χώροι του θα μπορούσαν λοιπόν να έρθουν σε αναλογία με την έννοια του μη τόπου, όπως τον ορίζει στο βιβλίο του ο Γάλλος ανθρωπολόγος Marc Augé.
Ο κινηματογράφος αποτελεί ένα ιδιάζον μέσο διερεύνησης του τρόπου με τον οποίο φανταζόμαστε τις πόλεις ως εμπειρία, αλλά και ως θεωρητική κατασκευή. Το κινηματογραφικό υλικό μας επιτρέπει να βγάλουμε κάποια συμπεράσματα για το πως βιώνουμε τον πραγματικό αστικό χώρο, πως θα θέλαμε να είναι, τι φοβόμαστε ή ελπίζουμε ότι μπορεί να γίνει στο μέλλον. Είναι σύμφωνα με τον E. Soja το «αστικό φαντασιακό» (urban imaginery), που αποτελεί γνώμονα όχι μόνο κατανόησης, αλλά και αναπαραγωγής του αστικού χώρου ως τόπου και τρόπου ζωής, ενώ συγχρόνως επιβεβαιώνει η αντιτίθεται στις κρατούσες ερμηνείες, επιθυμίες και μυθολογίες.  Η διάθεση της τέχνης του κινηματογράφου ως προς την πόλη μπορεί είτε να είναι κριτική είτε να έχει χαρακτήρα προβολής και ανάδειξης της ιστορικότητας της.
Η πόλη ως ζωντανός οργανισμός αναδεικνύεται και αναδεικνύει ταινίες ως σημεία αναφοράς και μνήμης πρωταγωνιστεί ή ακόμα και νοσεί μέσα σ αυτές. Ενσωματώνεται στις μυθοπλασίες είτε ως παρουσία είτε ως υποκείμενο. Άλλοτε προκαθορίζει τη δράση των προσώπων και άλλοτε βρίσκεται η ίδια στο κέντρο της δράσης.
Στην παρούσα εργασία θα γίνει προσέγγιση της έννοιας του μη τόπου και έπειτα αναγνώρισης τέτοιου είδους χώρων στο έργο του Jacques Tati, κυρίως στο Mon Oncle και το Playtime, θα αναλυθεί η κριτική άποψη του σκηνοθέτη σχετικά με τον χώρο, την αρχιτεκτονική και την πόλη, και ο τρόπος με τον οποίο εντάσσεται στις ταινίες του ως στοιχείο της αφηγηματικής του δομής.
Asymptotic upper bound for tangential speed of parabolic semigroups of holomorphic self-maps in the unit disc
Creators: name: Cordella, Davide
Publisher: name: arXiv
Year: 2020
Subjects: subject: Complex Variables (math.CV)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We show that the tangential speed of a parabolic semigroup of holomorphic self-maps in the unit disc is asymptotically bounded from above by (1/2)logt, proving a conjecture by Bracci. In order to show the proof we need a result of "asymptotical monotonicity" of the tangential speed for proper pairs of parabolic semigroups with positive hyperbolic step.
description: 21 pages
title: Ανάπλαση του παραλιακού μετώπου της Καρύστου στη Ν. Εύβοια
title: Waterfront redevelopment in Karystos, Evia
Creators: name: Σταμουλακη Αλκηστις
Publisher: name: Technical University of Crete
Year: 2019

description: Η παρούσα διπλωματική εργασία αποτελεί πρόταση ανάπλασης του παραλιακού μετώπου της Καρύστου, κωμόπολης της Ν. Εύβοιας, και έχει ως κύριο στόχο τον επαναπροσδιορισμό χρήσης και λειτουργίας των υπαρχόντων στοιχείων καθώς και τον σχεδιασμό νέων για την κάλυψη ελλείψεων και την ενίσχυση της λειτουργικής προοπτικής των υφισταμένων.
Η πολεοδομική οργάνωση της Καρύστου έγινε το 1842 βάσει ρυμοτομικού σχεδίου του βαυαρού μηχανικού O. Mirbach. Το χαρακτηριστικό αυτό αποτέλεσε τη βάση της διπλωματικής εργασίας για τον σχεδιασμό ορθοκανονικών στοιχείων και γραμμικών διαδρομών κατά μήκος της παράκτιας ζώνης και του κάθετου σε αυτήν άξονα, που ορίζουν την περιοχή μελέτης.
Η προτεινόμενη ανάπλαση περιλαμβάνει δύο πλατείες, ένα πάρκο, δύο παιδικές χαρές, μια οργανωμένη παραλία, τον χώρο καθισμάτων των καταστημάτων εστίασης, γήπεδα και χώρους ιστορικού και πολιτιστικού ενδιαφέροντος. Πλάι στα νέα στοιχεία που προστέθηκαν προκειμένου να δώσουν σύγχρονο χαρακτήρα στη φυσιογνωμία του χώρου, διατηρήθηκαν όλα εκείνα τα στοιχεία, που θεωρούνται σημεία αναφοράς της περιοχής. Επισημαίνεται ότι δόθηκε ιδιαίτερη έμφαση στον σχεδιασμό του αστικού εξοπλισμού της περιοχής.
Βασική παράμετρο στον ανασχεδιασμό του παράκτιου μετώπου αποτέλεσε η επιλογή του υλικού επίστρωσης. Το υλικό αυτό, η πλάκα Καρύστου, συναντάται ως σήμερα —δεδομένου ότι αποτελεί βασικό φυσιογνωμικό υλικό της— σε ακανόνιστη μορφή μέσα στην πόλη. Στην προτεινόμενη ανάπλαση το υλικό αυτό χρησιμοποιείται με πιο σύγχρονη αντιμετώπιση, με στόχο η διάταξη των αποχρώσεων να προσφέρει ποικιλία σχημάτων και συνθέσεων.
Positional dependence of energy gap on line defect in armchair graphene nanoribbons: Two-terminal transport and related issues
Creators: name: Dutta, Paramita
name: Maiti, Santanu K.
name: Karmakar, S. N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The characteristics of energy band spectrum of armchair graphene nanoribbons in presence of line defect are analyzed within a simple non-interacting tight-binding framework. In metallic nanoribbons an energy gap may or may not appear in the band spectrum depending on the location of the defect line, while in semiconducting ribbons the gaps are customized, yielding the potential applicabilities of graphene nanoribbons in nanoscale electronic devices. With a more general model, we also investigate two-terminal electron transport using Green's function formalism.
description: 7 pages, 8 figures
Periodic perturbations of constrained motion problems on a class of implicitly defined manifolds
Creators: name: Calamai, Alessandro
name: Spadini, Marco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34C40, 34A09, 34C25

description: We study forced oscillations on differentiable manifolds which are globally defined as the zero set of appropriate smooth maps in some Euclidean spaces. Given a T-periodic perturbative forcing field, we consider the two different scenarios of a nontrivial unperturbed force field and of perturbation of the zero field. We provide simple, degree-theoretic conditions for the existence of branches of T-periodic solutions. We apply our construction to a class of second order Differential-Algebraic Equations.
description: 15 pages, 2 figures, to appear in Communications in Contemporary Mathematics. arXiv admin note: substantial text overlap with arXiv:1102.1562
How to measure diffusional decoherence in multimode rubidium vapor memories?
Creators: name: Chrapkiewicz, Radoslaw
name: Wasilewski, Wojciech
name: Radzewicz, Czeslaw
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Diffusion is the main limitation of storage time in spatially multimode applications of warm atomic vapors. Precise knowledge of diffusional decoherence in the system is desired for designing most of vapor memory setups. Here we present a novel, efficient and direct method of measuring unbiased diffusional decoherence, clearly distinguished from all other decoherence sources. We found the normalized diffusion coefficients of rubidium atoms in noble gases to be as follows: neon 0.20 cm$^{2}$/s, krypton 0.068 cm$^{2}$/s and we are the first to give an experimental result for rubidium in xenon: 0.057 cm$^{2}$/s. Our method consists in creating, storing and retrieving spatially-varying atomic coherence. Raman scattering provides a necessary interface to the atoms that allows for probing many spatial periodicities of atomic coherence concurrently. As opposed to previous experiments the method can be used for any single sealed glass cell and it does not require any setup alterations during the measurements and therefore it is robust and repeatable.
Nonlinear displaced Kerr state and its nonclassical properties
Creators: name: Chatterjee, Arpita
name: Ghosh, Rupamanjari
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81V80

description: We construct a distinct class of nonlinear displaced Kerr state by application of the displacement operator upon a state which is prepared by sending the well-known photon-added coherent state through a normal Kerr medium. A sketch for the experimental set-up for preparing the state is suggested. We evaluate some statistical properties such as the photon number distribution, Mandel's $Q$ parameter, Husimi-$Q$ and Wigner functions, and quadrature squeezing, for the nonlinear displaced Kerr state, and then analyze the nonclassicality in terms of these standard parameters. We reduce the infinite-level problem to a truncated discrete two-level system by using low Kerr parameter approximation and then convert the generated nonclassicality into bipartite entanglement between the two modes of an output state of a linear optical device.
description: 14 pages, 9 figures
5G-ROUTES: D1.3 Report on 5G-ROUTES CAM deployment plan and longer-term deployment strategies
Creators: name: Lindenbergs, Arturs
Publisher: name: Zenodo
Year: 2022

description: The aim of deliverable 1.3 is to summarise 5G-ROUTES CAM deployment plan giving a snapshot view of assumptions, challenges and opportunities identified in initial stage of the 5G-ROUTES project. The report is based on MNO`s perspective for setting up a new 5G trial network for large scale trials of Northern Europe. The project title proposes a longer-term deployment strategy, however, such strategy is dependent on delays of 3GPP releases, i.e. R.16 to 2021 and R.17 to 2022/2023 and associated uncertainties. This restricts availability and vendor readiness to provide the technology before 2023 and to propose longer term strategy for deployment at least in initial phase of the project. Cross-border 5G communication demonstration gives several challenges which should be addressed during the deployment phase of the project. Within the report a blending of use case requirements, enabling technologies and technical framework requirements are analysed alongside the technical challenges faced by geopolitical limitations and legislations. All above mentioned aspects are carefully summarised and pinned for further risk assessment type of analysis, identifying opportunities for deployment of the use cases, in particular at border crossing locations. The report also includes an analysis of Latvia, Estonia and Finland regulations in both CAM and radio spectrum, aiming to set the legislative landscape. Finally, the report presents the 5G-ROUTES demonstration 5G network deployment plan for large scale and localised trial sites in Latvia, Estonia and Finland.
Thermodynamic phase transition and Joule Thomson adiabatic expansion for dS/AdS Bardeen Black Holes with consistent 4D Gauss-Bonnet gravity
Creators: name: Ghaffarnejad, Hossein
name: Ghasami, Elham
name: Yaraie, Emad
name: Farsam, Mohammad
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Instead of the work \cite{1} which in according to the Lovelock theorem it could not applicable for all types of 4D curved spacetimes of Einstein Gauss Bonnet (EGB) gravity, authors of the work \cite{2} applied break of diffeomorphism property to present a consistent EGB gravity theory. In this work we use the latter model by adding a nonlinear electromagnetic field lagrangian density to study affects of GB coupling constant into the thermodynamic phase transition and Joule Thomson (JT) adiabatic expansion of a 4D $dS/AdS$ GB Bardeen black hole.
description: 22 pages, 2 figures
On the Hofer-Zehnder conjecture on $\mathbb{C}\text{P}^d$ via generating functions (with an appendix by Egor Shelukhin)
Creators: name: Allais, Simon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 70H12, 37J10, 58E05, 53N31

description: We use generating function techniques developed by Givental, Théret and ourselves to deduce a proof in $\mathbb{C}\text{P}^d$ of the homological generalization of Franks theorem due to Shelukhin. This result proves in particular the Hofer-Zehnder conjecture in the non-degenerated case: every Hamiltonian diffeomorphism of $\mathbb{C}\text{P}^d$ that has at least $d+2$ non-degenerated periodic points has infinitely many periodic points. Our proof does not appeal to Floer homology or the theory of $J$-holomorphic curves. An appendix written by Shelukhin contains a new proof of the Smith-type inequality for barcodes of Hamiltonian diffeomorphisms that arise from Floer theory, which lends itself to adaptation to the setting of generating functions.
description: 49 pages, 2 figures