cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Subspace tracking for nested arrays
title: Παρακολούθηση υποχώρου για ένθετες συστοιχίες κεραιών

Creators: name: Φουντουλακης Εμμανουηλ
Publisher: name: Technical University of Crete
Year: 2016

description: In radar, sonar, and mobile communications, the estimation of the directions from which multi-
ple signals arrive at a point is called the direction of arrival (DoA) estimation problem and, over
the past decades, has been performed often through uniform linear arrays (ULAs) in conjunc-
tion with high-resolution subspace-based algorithms. Such techniques, however, have limited
capability of the number of directions they can estimate; if the ULA consists of N antenna
elements, then high-resolution subspace-based algorithms can estimate the directions of up to
N − 1 signals. To increase this number, a novel structure that consists of N antenna elements
and enables the estimation of O (N^2 ) signal directions has been developed recently. It lies on
specific nonuniform-array structures which are called nested arrays.
In this thesis, we first overviewed the structure and properties of nested arrays and eval-
uated their performance through computer simulations. We observed that the nested arrays
with conventional subspace-based signal-processing algorithms can offer high performance but
require high complexity, which makes them impractical for real-time applications. Then, we
developed novel subspace tracking techniques for nested arrays that have lower complexity,
are proven to converge to the optimal, subspace-based estimator, and are capable of tracking
changes in the directions of the arriving signals (for example, when a source is moving with
respect to the array receiver).
How To Monitor AGN Intra-Day Variability at 230 GHz
Creators: name: Kim, Jae-Young
name: Trippe, Sascha
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We probe the feasibility of high-frequency radio observations of very rapid flux variations in compact active galactic nuclei (AGN). Our study assumes observations at 230 GHz with a small 6-meter class observatory, using the SNU Radio Astronomical Observatory (SRAO) as example. We find that 33 radio-bright sources are observable with signal-to-noise ratios larger than ten. We derive statistical detection limits via exhaustive Monte Carlo simulations assuming (a) periodic, and (b) episodic flaring flux variations on time-scales as small as tens of minutes. We conclude that a wide range of flux variations is observable. This makes high-frequency radio observations - even with small observatories - a powerful probe of AGN intra-day variability; especially, those observations complement observations at lower radio frequencies with larger observatories like the Korean VLBI Network (KVN).
description: 10 pages, 5 figures, 2 tables; final version with minor updates; to appear in JKAS (submitted 2012 December 21; revised 2013 February 5; accepted 2013 February 5)
Bertalan László összeállítása: A kontextuális elemzésről II. rész, Szociológia 1986, 3-4. szám.
Creators: name: László, Bertalan
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 441006
subject: Sociological methodology and research methods

description: Bertalan László összeállítása: A kontextuális elemzésről II. rész, Szociológia 1986, 3-4. szám.
Additional file 1 of Hyperbaric oxygen therapy for long COVID (HOT-LoCO), an interim safety report from a randomised controlled trial
Creators: name: Kjellberg, Anders
name: Hassler, Adrian
name: Boström, Emil
name: El Gharbi, Sara
name: Al-Ezerjawi, Sarah
name: Kowalski, Jan
name: Rodriguez-Wallberg, Kenny A.
name: Bruchfeld, Judith
name: Ståhlberg, Marcus
name: Nygren-Bonnier, Malin
name: Runold, Michael
name: Lindholm, Peter
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. AE listing, AE Interim 1 Safety report.pdf.
title: Performance analysis, middleware and hardware for bistatic, ultra-low power scatter radio networks
Creators: name: Τουντας Κωνσταντινος
Publisher: name: Technical University of Crete
Year: 2016

description: For environmental sensing applications that require dense deployments, scatter ra- dio is a promising communication scheme; since modulation is achieved by means of reflection, ultra low-cost and ultra-power RF front-ends are possible. However, scatter radio utilization in sensor networks has been limited, since commercial scatter radio applications, like Radio Frequency Identification (RFID), are limited to ranges of a few meters. This work compares the two most prominent scatter radio architec- tures, namely the monostatic and the bistatic, exploiting both communication and microwave theory basics. The comparison metrics include the bit error rate (BER) under maximum-likelihood detection for the single-user case and the outage proba- bility for the multi-user (network) case. Exact BER and tight, tag/sensor-topology independent outage probability bounds based on the Jensen inequality are derived for Rayleigh fading, in both monostatic and bistatic scatter radio networks/architectures. It is shown that the bistatic architecture improves field coverage and system reliability, compared to monostatic, for scatter wireless sensor networks (WSNs). Based on this observation, a complete, low-cost, embedded, digital, bistatic scatter radio sensor network, perhaps the first of its kind, using frequency-shift keying (FSK) modulation and frequency division multiplexing (FDM), along with randomized time division mul- tiplexing (TDM), is implemented and demonstrated. This work is perhaps a concrete step towards ultra-large scale, scatter radio sensor networks and relevant low-cost environmental monitoring applications.
A network-based microfoundation of Granovetter’s threshold model for social tipping
Creators: name: Wiedermann, Marc
name: Smith, E. Keith
name: Heitzig, Jobst
name: Donges, Jonathan F.
Publisher: name: [London] : Macmillan Publishers Limited, part of Springer Nature
Year: 2020
Subjects: subject: adult
subject: controlled study
subject: human
subject: hysteresis
subject: social interaction
subject: theoretical study
subject: 500
subject: 600

description: Social tipping, where minorities trigger larger populations to engage in collective action, has been suggested as one key aspect in addressing contemporary global challenges. Here, we refine Granovetter’s widely acknowledged theoretical threshold model of collective behavior as a numerical modelling tool for understanding social tipping processes and resolve issues that so far have hindered such applications. Based on real-world observations and social movement theory, we group the population into certain or potential actors, such that – in contrast to its original formulation – the model predicts non-trivial final shares of acting individuals. Then, we use a network cascade model to explain and analytically derive that previously hypothesized broad threshold distributions emerge if individuals become active via social interaction. Thus, through intuitive parameters and low dimensionality our refined model is adaptable to explain the likelihood of engaging in collective behavior where social-tipping-like processes emerge as saddle-node bifurcations and hysteresis. © 2020, The Author(s).
Additional file 2 of Hyperbaric oxygen therapy for long COVID (HOT-LoCO), an interim safety report from a randomised controlled trial
Creators: name: Kjellberg, Anders
name: Hassler, Adrian
name: Boström, Emil
name: El Gharbi, Sara
name: Al-Ezerjawi, Sarah
name: Kowalski, Jan
name: Rodriguez-Wallberg, Kenny A.
name: Bruchfeld, Judith
name: Ståhlberg, Marcus
name: Nygren-Bonnier, Malin
name: Runold, Michael
name: Lindholm, Peter
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2. Protocol from DSMB meeting, DSMB protocol 2022-05-09.pdf.
Strain-dependent modulation of conductivity in single layer transition-metal dichalcogenides
Creators: name: Ghorbani-Asl, Mahdi
name: Borini, Stefano
name: Kuc, Agnieszka
name: Heine, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Quantum conductance calculations on the mechanically deformed monolayers of MoS$_2$ and WS$_2$ were performed using the non-equlibrium Green's functions method combined with the Landauer-Büttiker approach for ballistic transport together with the density-functional based tight binding (DFTB) method. Tensile strain and compression causes significant changes in the electronic structure of TMD single layers and eventually the transition semiconductor-metal occurs for elongations as large as ~11% for the 2D-isotropic deformations in the hexagonal structure. This transition enhances the electron transport in otherwise semiconducting materials.
description: Submitted to PRB on 15.01.13, contains 13 pages, 6 figures
Particle number emission rates of aerosol sources in 40 German households and their contributions to ultrafine and fine particle exposure
Creators: name: Zhao, Jiangyue
name: Birmili, Wolfram
name: Hussein, Tareq
name: Wehner, Birgit
name: Wiedensohler, Alfred
Publisher: name: Oxford : Wiley-Blackwell
Year: 2020
Subjects: subject: coagulation loss
subject: correction factors of emission rates
subject: indoor air model (IAM) simulation
subject: particle number emission rate
subject: penetration factor
subject: source contribution to particle exposure
subject: 690

description: More representative data on source-specific particle number emission rates and associated exposure in European households are needed. In this study, indoor and outdoor particle number size distributions (10–800 nm) were measured in 40 German households under real-use conditions in over 500 days. Particle number emission rates were derived for around 800 reported indoor source events. The highest emission rate was caused by burning candles (5.3 × 1013 h−1). Data were analyzed by the single-parameter approach (SPA) and the indoor aerosol dynamics model approach (IAM). Due to the consideration of particle deposition, coagulation, and time-dependent ventilation rates, the emission rates of the IAM approach were about twice as high as those of the SPA. Correction factors are proposed to convert the emission rates obtained from the SPA approach into more realistic values. Overall, indoor sources contributed ~ 56% of the daily-integrated particle number exposure in households under study. Burning candles and opening the window leads to seasonal differences in the contributions of indoor sources to residential exposure (70% and 40% in the cold and warm season, respectively). Application of the IAM approach allowed to attribute the contributions of outdoor particles to the penetration through building shell and entry through open windows (26% and 15%, respectively). © 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd
Simulations of the non-linear thin shell instability
Creators: name: McLeod, A. D.
name: Whitworth, A. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use three-dimensional smoothed particle hydrodynamics simulations to study the non-linear thin shell instability (NTSI) in supersonic colliding flows. We show that for flows with monochromatic perturbations and for flows with white-noise perturbations, growth speeds approximate quite well to the analytic predictions of Vishniac (1994). For flows with subsonic turbulence, growth speeds match Vishniac's predictions only at short wavelengths where the turbulence is weaker. We find that supersonic turbulence, of a lower Mach number than the colliding flows, completely suppresses the NTSI. Our results provide a diagnostic for identifying the presence of the NTSI in colliding flows with turbulence.
description: 13 pages, 17 figures; published in MNRAS and available at http://mnras.oxfordjournals.org/cgi/content/abstract/stt203
Confronting Mueller-Navelet jets in NLL BFKL with LHC experiments at 7 TeV
Creators: name: Ducloué, B.
name: Szymanowski, L.
name: Wallon, S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: More than 25 years ago, Mueller Navelet jets were proposed as a decisive test of BFKL dynamics at hadron colliders. We here study this process at NLL BFKL accuracy, taking into account NLL corrections to the Green's function and to the jet vertices. We present detailed predictions for various observables that can be measured at LHC in ongoing experiments like ATLAS or CMS at sqrt{s}=7 TeV: the cross-section, the azimuthal correlations and the angular distribution of these jets. For this purpose, we apply realistic kinematical cuts and binning, and study the dependence of our results with respect to several parameters. We then compare our results with those that can be obtained in a fixed order NLO treatment, and propose specific observables which could actually be used as a probe of BFKL dynamics.
description: 30 pages, 25 figures
title: Σύνθεση οξειδίου του γραφενίου και αναγωγή του με διάφορα αναγωγικά αντιδραστήρια
title: Synthesis of graphene oxide and reduction with various reducing reagents
Creators: name: Μουστακης Γεωργιος
Publisher: name: Technical University of Crete
Year: 2018

description: This particular dissertation aims to preparing graphene oxide GO and reduced graphene oxide RGO. More specifically, the aim was to optimize the process of oxidizing graphite and preparing graphene oxide. For this reason various graphite oxide compositions were made by oxidation with potassium permanganate. High importance was given in the detailed control of the experimental oxidation conditions, as these significantly affect the properties, form and even the quantity of the final product.
Aqueous suspensions of graphene oxide were then prepared by exfoliating graphite oxide in aqueous solutions under the influence of ultrasound radiation. Subsequently, various reducing agents such as ascorbic acid, sodium boron hydride and hydrogen iodide were added to the graphene aqueous suspensions to prepare the reduced graphene oxide RGO.

description: Η παρούσα διπλωματική εργασία έχει ως στόχο την παρασκευή οξειδίου του γραφενίου GO και αναγμένου οξειδίου του γραφενίου RGO.  Πιο συγκεκριμένα, ο στόχος ήταν να βελτιστοποιηθεί η διαδικασία οξείδωσης του γραφίτη και παρασκευής του οξειδίου του γραφενίου. Για το λόγο αυτό πραγματοποιήθηκαν διάφορες συνθέσεις οξειδίου του γραφίτη με οξείδωσή του με υπερμαγγανικό κάλλιο. Ιδιαίτερη προσοχή δόθηκε στο λεπτομερή έλεγχο των πειραματικών συνθηκών οξείδωσης, καθώς αυτές επηρεάζουν σημαντικά τις ιδιότητες, την μορφή ακόμη και την ποσότητα του τελικού προϊόντος.
Στη συνέχεια παρασκευάστηκαν υδατικά αιωρήματα οξειδίου του γραφενίου με απολέπιση του οξειδίου του γραφίτη σε υδατικά διαλύματα υπό την επίδραση ακτινοβολίας υπερήχων. Μετέπειτα ακολούθησε η προσθήκη διαφόρων αναγωγικών αντιδραστηρίων όπως ασκορβικό οξύ, νάτριο βόριο υδρίδιο και υδροϊώδιο στα υδατικά αιωρήματα του γραφενίου προς παρασκευή του αναγμένου οξειδίου του γραφενίου RGO.
Extended phase space description of human-controlled systems dynamics
Creators: name: Zgonnikov, Arkady
name: Lubashevsky, Ihor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Humans are often incapable of precisely identifying and implementing the desired control strategy in controlling unstable dynamical systems. That is, the operator of a dynamical system treats the current control effort as acceptable even if it deviates slightly from the desired value, and starts correcting the actions only when the deviation has become evident. We argue that the standard Newtonian approach does not allow to model such behavior. Instead, the physical phase space of a controlled system should be extended with an independent phase variable characterizing the operator motivated actions. The proposed approach is illustrated via a simple non-Newtonian model capturing the operators fuzzy perception of their own actions. The properties of the model are investigated analytically and numerically; the results confirm that the extended phase space may aid in capturing the intricate dynamical properties of human-controlled systems.
description: 8 pages, 7 figures
IDPL: Intra-subdomain adaptation adversarial learning segmentation method based on Dynamic Pseudo Labels
Creators: name: Li, Xuewei
name: Zhang, Weilun
name: Gao, Jie
name: Fu, Xuzhou
name: Yu, Jian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Unsupervised domain adaptation(UDA) has been applied to image semantic segmentation to solve the problem of domain offset. However, in some difficult categories with poor recognition accuracy, the segmentation effects are still not ideal. To this end, in this paper, Intra-subdomain adaptation adversarial learning segmentation method based on Dynamic Pseudo Labels(IDPL) is proposed. The whole process consists of 3 steps: Firstly, the instance-level pseudo label dynamic generation module is proposed, which fuses the class matching information in global classes and local instances, thus adaptively generating the optimal threshold for each class, obtaining high-quality pseudo labels. Secondly, the subdomain classifier module based on instance confidence is constructed, which can dynamically divide the target domain into easy and difficult subdomains according to the relative proportion of easy and difficult instances. Finally, the subdomain adversarial learning module based on self-attention is proposed. It uses multi-head self-attention to confront the easy and difficult subdomains at the class level with the help of generated high-quality pseudo labels, so as to focus on mining the features of difficult categories in the high-entropy region of target domain images, which promotes class-level conditional distribution alignment between the subdomains, improving the segmentation performance of difficult categories. For the difficult categories, the experimental results show that the performance of IDPL is significantly improved compared with other latest mainstream methods.
description: Accepted at The 29th International Conference on Neural Information Processing (ICONIP 2022)
Magnetized Accretion and Dead Zones in Protostellar Disks
Creators: name: Dzyurkevich, Natalia
name: Turner, Neal J.
name: Henning, Thomas
name: Kley, Wilhelm
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The edges of magnetically-dead zones in protostellar disks have been proposed as locations where density bumps may arise, trapping planetesimals and helping form planets. Magneto-rotational turbulence in magnetically-active zones provides both accretion of gas on the star and transport of mass to the dead zone. We investigate the location of the magnetically-active regions in a protostellar disk around a solar-type star, varying the disk temperature, surface density profile, and dust-to-gas ratio. We also consider stellar masses between 0.4 and 2 $M_\odot$, with corresponding adjustments in the disk mass and temperature. The dead zone's size and shape are found using the Elsasser number criterion with conductivities including the contributions from ions, electrons, and charged fractal dust aggregates. The charged species' abundances are found using the approach proposed by S. Okuzumi. The dead zone is in most cases defined by the ambipolar diffusion. In our maps, the dead zone takes a variety of shapes, including a fish-tail pointing away from the star and islands located on and off the midplane. The corresponding accretion rates vary with radius, indicating locations where the surface density will increase over time, and others where it will decrease. We show that density bumps do not readily grow near the dead zone's outer edge, independently of the disk parameters and the dust properties. Instead, the accretion rate peaks at the radius where the gas-phase metals freeze out. This could lead to clearing a valley in the surface density, and to a trap for pebbles located just outside the metal freeze-out line.
description: 58 pages, 25 figures, 2 tables, accepted to ApJ
Disperis trilineata Croix & Bosser & Cribb 2002
Creators: name: Croix, Isobyl la
name: Bosser, Jean
name: Cribb, Phillip J.
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Disperis
Disperis trilineata

description: 2.Disperis trilineata Schltr. Feddes Repert. Spec. Nov. Regni Veg. Beih. 33: 112 (1925); H. Perrier in Humbert H. (ed.), Fl. Madag., 49 e fam., Orchidées 1: 181 (1939); Du Puy et al., Orch. Madag.: 136 (1999). — Type: Perrier de la Bâthie 15705, Madagascar, Sambirano valley (holo-, P!, photo K!). Slender terrestrial herb 5-15 cm high. Tubers 2, oblong, villous. Leaves 2, at about the middle of the stem, opposite or subopposite, 1.5-4 × 0.8- 1.8 cm, ovate, acute, with 3 pale longitudinal veins. Inflorescence 1-3-flowered; bracts 4 × 5 mm, broadly ovate. Flowers dull pink or violet, rather small; pedicel and ovary c. 11 mm long. Dorsal sepal 3-4 mm long, linear; lateral sepals 3-4 mm long, free more or less to the base, obliquely elliptic, each with a conical short spur around the middle. Petals 3-4 mm long, elliptic, with the median vein prominent on the outer surface, adnate to the dorsal sepal to form an open hood. Lip 4 mm long, fused to the column at base then with an obcuneiform claw bearing at the top a 5-lobed appendage, the side lobes short and farinose-tomentose, the mid-lobe larger, lanceolate and glabrous. Rostellum suborbicular, completely covering the anther. — Fig. 1. DISTRIBUTION. — Madagascar, Comores. HABITAT. — In humus in moist forest; c. 400 m. MATERIAL STUDIED. — MADAGASCAR: Perrier de la Bâthie 15705, Sambirano, sides of the valley, Jan. 1923 (P!). — COMORES: Humblot 1484, Anjouan, 9 Mar. 1896 (P!). This is a small delicate species of dark and humid forests at low elevation, found once in Madagascar and once on Anjouan in the Comores. The leaf is dull green on the upper side with three main rose-pink veins, the lower surface is red-purple.
description: Published as part of Croix, Isobyl la, Bosser, Jean & Cribb, Phillip J., 2002, The genus Disperis (Orchidaceae) in Madagascar, the Comores, the Mascarenes and the Seychelles, pp. 55-87 in Adansonia (3) (3) 24 (1) on page 58, DOI: 10.5281/zenodo.5180356
The geometry of lightlike surfaces in Minkowski space
Creators: name: Carlsen, Brian
name: Clelland, Jeanne N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We investigate the geometric properties of lightlike surfaces in the Minkowski space $\R^{2,1}$, using Cartan's method of moving frames to compute a complete set of local invariants for such surfaces. Using these invariants, we give a complete local classification of lightlike surfaces of constant type in $\R^{2,1}$ and construct new examples of such surfaces.
Biomimic Vein-Like Transparent Conducting Electrodes with Low Sheet Resistance and Metal Consumption
Creators: name: Jia, Guobin
name: Plentz, Jonathan
name: Dellith, Andrea
name: Schmidt, Christa
name: Dellith, Jan
name: Schmidl, Gabriele
name: Andrä, Gudrun
Publisher: name: Berlin ; Heidelberg [u.a.] : Springer
Year: 2020
Subjects: Biomimic leaf vein network
Metal consumption
Sheet resistance
Transparent conducting electrode

description: Abstract: In this contribution, inspired by the excellent resource management and material transport function of leaf veins, the electrical transport function of metallized leaf veins is mimicked from the material transport function of the vein networks. By electroless copper plating on real leaf vein networks with copper thickness of only several hundred nanometre up to several micrometre, certain leaf veins can be converted to transparent conductive electrodes with an ultralow sheet resistance 100 times lower than that of state-of-the-art indium tin oxide thin films, combined with a broadband optical transmission of above 80% in the UV–VIS–IR range. Additionally, the resource efficiency of the vein-like electrode is characterized by the small amount of material needed to build up the networks and the low copper consumption during metallization. In particular, the high current density transport capability of the electrode of > 6000 A cm−2 was demonstrated. These superior properties of the vein-like structures inspire the design of high-performance transparent conductive electrodes without using critical materials and may significantly reduce the Ag consumption down to < 10% of the current level for mass production of solar cells and will contribute greatly to the electrode for high power density concentrator solar cells, high power density Li-ion batteries, and supercapacitors.[Figure not available: see fulltext.]. © 2020, © 2020, The Author(s).
A double Fourier sphere method for d-dimensional manifolds
Creators: name: Mildenberger, Sophie
name: Quellmalz, Michael
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: double Fourier sphere method
subject: approximation on manifolds
subject: Fourier series

description: The double Fourier sphere (DFS) method uses a clever trick to transform a function defined on the unit sphere to the torus and subsequently approximate it by a Fourier series, which can be evaluated efficiently via fast Fourier transforms. Similar approaches have emerged for approximation problems on the disk, the ball, and the cylinder. In this paper, we introduce a generalized DFS method applicable to various manifolds, including all the above-mentioned cases and many more, such as the rotation group. This approach consists in transforming a function defined on a manifold to the torus of the same dimension. We show that the Fourier series of the transformed function can be transferred back to the manifold, where it converges uniformly to the original function. In particular, we obtain analytic convergence rates in case of Hölder-continuous functions on the manifold.
Direct visualization and control of antiferromagnetic domains and spin reorientation in a parent cuprate
Creators: name: Seyler, K. L.
name: Ron, A.
name: Van Beveren, D.
name: Rotundu, C. R.
name: Lee, Y. S.
name: Hsieh, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report magnetic optical second-harmonic generation (SHG) polarimetry and imaging on Sr$_2$Cu$_3$O$_4$Cl$_2$, which allows direct visualization of the mesoscopic antiferromagnetic (AFM) structure of a parent cuprate. Temperature- and magnetic-field-dependent SHG reveals large domains with 90$^{\circ}$ relative orientations that are stabilized by a combination of uniaxial magnetic anisotropy and the Earth's magnetic field. Below a temperature $T_R$ $\sim$ 97 K, we observe an unusual 90$^{\circ}$ spin reorientation transition, possibly driven by competing magnetic anisotropies of the two copper sublattices, which swaps the AFM domain states while preserving the domain structure. This allows deterministic switching of the AFM states by thermal or laser heating. Near $T_R$, the domain walls become exceptionally responsive to an applied magnetic field, with the Earth's field sufficient to completely expel them from the crystal. Our findings unlock opportunities to study the mesoscopic AFM behavior of parent cuprates and explore their potential for AFM technologies.
description: 7 pages main text, 4 figures, 13 pages supplementary information
title: Παρουσία πολυανθεκτικών βακτηρίων σε αντιβιοτικά στα υγρά απόβλητα κι έλεγχος αδρανοποίησής τους με την οζόνωση ως μέθοδο απολύμανσης
title: Occurence of multiple antibiotic resistant bacteria in wastewater and investigation of their inactivation during ozonation, as a disinfection technique
Creators: name: Σδρακα Ανδρονικη
Publisher: name: Technical University of Crete
Year: 2018

description: Η ανθεκτικότητα των μικροοργανισμών στα αντιβιοτικά συνεχίζει να αναπτύσσεται, ενώ ο αγωγός για την ανάπτυξη νέων αντιβιοτικών ουσιών στερεύει. Σαν αποτέλεσμα, βακτηριακές λοιμώξεις που κάποτε θεραπεύονταν εύκολα, γίνονται ανίατες. Ειδικότερα, η Ελλάδα συγκαταλέγεται σε μία από τις πλέον απειλούμενες χώρες όσον αφορά την μικροβιακή αντοχή, ως συνέπεια των υψηλών επιπέδων κατανάλωσης αντιμικροβιακών ουσιών που έχουν καταγραφεί (ΚΕΕΛΠΝΟ).
Ως μία άκρως σημαντική πηγή ανθεκτικών μικροβίων στα αντιβιοτικά, χαρακτηρίζονται οι εγκαταστάσεις επεξεργασίας υγρών αποβλήτων, λόγω των εξαιρετικών συνθηκών για την ανάπτυξη τους (Marti et al. 2014)
Σκοπός της παρούσας διπλωματικής εργασίας ήταν αφενός ο εντοπισμός των ανθεκτικών βακτηρίων που απομονώθηκαν από την Εγκατάσταση Επεξεργασίας Λυμάτων στα Χανιά, στα αντιβιοτικά Σουλφαμεθοξαζόλη-Τριμεθοπρίμη, Τετρακυκλίνη και Σιπροφλοξασίνη, και αφετέρου ο έλεγχος μεταβολής του προφίλ της ανθεκτικότητας μερικών εξ' αυτών μετά την εφαρμογή οζόνωσης ως  μεθόδου απολύμανσης. Τα στελέχη που εξετάστηκαν ανήκαν στις ευρύτερες βακτηριακές οικογένειες Enterobacteriaceae, Enterococcaceae, Aeromonadaceae, Rhizobiaceae και Vibrionaceae. Η μέθοδος που εφαρμόστηκε για την εύρεση του ποσοστού μείωσης του 60% του συνολικού πληθυσμού του εκάστοτε βακτηρίου, ήταν αυτή της Ελάχιστης Ανασταλτικής Συγκέντρωσης (Minimum Inhibitory Concentration-MIC). Για την απολύμανση χρησιμοποιήθηκε γεννήτρια Aqua-FloCD1B. Στη Σουλφαμεθοξαζόλη-Τριμεθοπρίμη εντοπίστηκε η μεγαλύτερη ανθεκτικότητα εκ των τριών ουσιών, με ποσοστό θνησιμότητας των βακτηρίων 82,36% κατά τη δράση της. Για τη σιπροφλοξασίνη και την τετρακυκλίνη το ποσοστό εμφάνισης  ανθεκτικών βακτηρίων ως προς αυτές ήταν στο 5.88%. Συνολικά, παρατηρήθηκε ότι εκ των 17 στελεχών που εξετάστηκαν, η πλειονότητα των ανθεκτικών για τις τρεις αντιβιοτικές ουσίες, προέρχονταν από την εκροή της δευτεροβάθμιας επεξεργασίας, γεγονός που έχει επιβεβαιωθεί και από τις μελέτες άλλων ερευνητών (Manaia et al. 2018). Για περαιτέρω επεξεργασία με οζόνωση, οδηγήθηκαν τα στελέχη Aeromonas hydrophila, Klebsiella oxytoca, Enterococcus faecium και Rhizobium radiobacter, τα οποία αδρανοποιήθηκαν πλήρως με δόσεις όζοντος 9.9 mg/L, 16.76 mg/L, 9.2 mg/L και 12.98 mg/L αντίστοιχα. Τέλος, στα εναπομείναντα βακτήρια μετά την απολύμανση, ελέγχθηκε η μεταβολή του προφίλ ανθεκτικότητας τους και ως προς τα τρία αντιβιοτικά. Τα αποτελέσματα έδειξαν ότι η οζόνωση επηρέασε έντονα την αντοχή τους στις ουσίες είτε θετικά είτε αρνητικά, δεδομένης της εκάστοτε δόσης όζοντος, του είδους του βακτηρίου και της προέλευσής του.
Additional file 2 of Noninvasive prenatal diagnosis of monogenic disorders based on direct haplotype phasing through targeted linked-read sequencing
Creators: name: Chen, Chao
name: Chen, Min
name: Zhu, Yaping
name: Jiang, Lu
name: Li, Jia
name: Wang, Yaoshen
name: Lu, Zhe
name: Guo, Fengyu
name: Wang, Hairong
name: Peng, Zhiyu
name: Yang, Yun
name: Sun, Jun
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S1. The NIPD results of α-thalassemia and β-thalassemia
Rapid laser-free ion cooling by controlled collision
Creators: name: Lau, Hoi-Kwan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: I propose a method to remove the axial motional excitation from an ion qubit within a few oscillation periods of a harmonic trap. The principle is to prepare another coolant ion in its motional ground state, and then apply a phonon beam splitter to swap the motional state between the ions without affecting the internal state. This method requires only the precise control of the trapping potential, thus its performance does not suffer from the limitations of current laser-cooling schemes. With sufficient coolant ions pre-prepared, this method can rapidly re-cool ion qubits during quantum information processing.
description: 5 pages, 3 figures. (v2) Substantially re-written with corrected theory and more details
Additional file 1 of BRD4 is involved in viral exacerbation of chronic obstructive pulmonary disease
Creators: name: Duan, Yifei
name: Zhou, Siyi
name: Wang, Jianmiao
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 1: Fig. S1. The viral RNA levels in influenza virus-infected BEAS-2B cells with different treatments.
Fermions coupled to the Palatini action in $n$ dimensions
Creators: name: Romero, Jorge
name: Montesinos, Merced
name: Escobedo, Ricardo
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study minimal and nonminimal couplings of fermions to the Palatini action in $n$ dimensions ($n\geq 3$) from the Lagrangian and Hamiltonian viewpoints. The Lagrangian action considered is not, in general, equivalent to the Einstein-Dirac action principle. However, by choosing properly the coupling parameters, it is possible to give a first-order action fully equivalent to the Einstein-Dirac theory in a spacetime of dimension four. By using a suitable parametrization of the vielbein and the connection, the Hamiltonian analysis of the general Lagrangian is given, which involves manifestly Lorentz-covariant phase-space variables, a real noncanonical symplectic structure, and only first-class constraints. Additional Hamiltonian formulations are obtained via symplectomorphisms, one of them involving half-densitized fermions. To confront our results with previous approaches, the time gauge is imposed.
description: It matches published version. We have improved a line breaking
Disperis ciliata Bosser 2002, sp. nov.
Creators: name: Croix, Isobyl la
name: Bosser, Jean
name: Cribb, Phillip J.
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Disperis
Disperis ciliata

description: 6.Disperis ciliata Bosser, sp. nov. Affinis Disperis latigaleatae H. Perrier sed petalis ad marginem ad apicemque longe ciliatis, et lobo mediale labelli triangulare satis differt. TYPUS. — Humbert & Capuron 25002, Madagascar, mountains N of Mangindrano (High Maevarano, near the summits of Ambohimiravavy (Central–North), 1800-2000 m, 19 Jan.-12 Feb. 1951 (holo-, P!; iso-, K!, MO!, P!). Known only from the type collection. A terrestrial herb, 15-20 cm tall. Stem slender glabrous. Leaves 2, opposite, inserted shortly above the middle of the stem, lanceolate, acute, rounded at the base and retracted into a short petiole, 2-4.5 × 0.8-2 cm. Inflorescence 2-5-flowered; bracts ovate, acute, those at the base largest, leafy, up to 8 × 5 mm. Flowers rose-coloured; pedicel and ovary 7-10 mm long. Dorsal sepal narrowly lanceolate to linear, acute, 7 × 1.5 mm, glabrous, with a median nerve and two fine lateral ones. Lateral sepals obliquely and broadly ovate, obtuse, connate at the base for about 2.5 mm, lacking a spur or gibbosity, 7.5 × 5.5 mm. Petals broadly and obliquely ovate, 6-6.5 × 4.5 mm, rounded at the tips, with the margins and apical part longly ciliate, adnate to the dorsal sepal to form a very concave hood of 6 × 6 mm. Lip 3-3.5 mm long; basal part linear, attached to the column for 1.7-1.9 mm; terminal part enlarged into a trilobed appendix, the lateral lobes linear, curved, involute on the margins, dilated-claviform at the apex, more or less 2 mm long; mid-lobe triangular, of the same length or a little longer than the side lobes, the upper face of the 3 lobes densely covered with a short papillose pubescence. Rostellar arms 1.7-1.8 mm long, slightly curved and spathulate at the apex. — Fig. 6D. DISTRIBUTION. — Madagascar; endemic. HABITAT. — Under trees in humid montane forest on laterite of gneiss, transition to lichenrich forest; 1700-1900 m. Because of its habit and the general appearance of its flowers, this species recalls D. latigaleata. It can be readily distinguished, however, by its ciliate petals and by the terminal appendage of its lip in which the midlobe is relatively short and covered by a short papillate pubescence while in D. latigaleata that lobe is lengthened into a linear glabrous extention which is slightly dilated at the tip. The lip appendage also resembles that of some forms of D. oppositifolia, but the flower is glabrous, with the lateral sepals more extensively connate and contracted at the narrow base.
description: Published as part of Croix, Isobyl la, Bosser, Jean & Cribb, Phillip J., 2002, The genus Disperis (Orchidaceae) in Madagascar, the Comores, the Mascarenes and the Seychelles, pp. 55-87 in Adansonia (3) (3) 24 (1) on page 64, DOI: 10.5281/zenodo.5180356
Der Zentrumbereichskern Wilmersdorfer Straße in Berlin-Charlottenburg in Zeiten multipler Krisen – gestärkt durch Nutzungsmischung, Kiezcharakter und Kuration?
Creators: name: Suwala, Lech
name: Pfeil, Nina
name: Lange, Max
name: Pfeiffer, Linus
name: Albers, Hans-Hermann
Publisher: name: Springer Science and Business Media LLC
Year: 2023
Subjects: subject: 900 Geschichte und Geografie::910 Geografie, Reisen::910 Geografie, Reisen
subject: Einzelhandel
subject: Stadtplanung
subject: gewerbliche Erdgeschosse
subject: Geschäftsstraßenmanagement
subject: Berlin City-West
subject: retail
subject: urban planning
subject: ground-floor commerce
subject: high street management
subject: Berlin City West

description: Die Coronapandemie hat zwischenzeitlich für einen durchschnittlichen Rückgang der Passantenfrequenzen von bis zu 40 % in den Hauptgeschäftsstraßen der deutschen Großstädte gesorgt. In Kombination mit den Schreckgespenstern Onlinehandel, der zunehmenden Einzelhandels- und Filialdichte und neuerdings der Inflation kommen besondere Herausforderungen auf innerstädtische Geschäftsstraßen und ihre Erdgeschosseinheiten zu. Dieser Beitrag setzt sich mit dem Zentrumbereichskern Wilmersdorfer Straße in Berlin-Charlottenburg auseinander und hat das Ziel, zu zeigen, dass Nutzungsmischung, Kiezcharakter und Kuration im Verbund innerstädtischen Geschäftsstraßen und ihren Erdgeschosseinheiten gerade in Krisenzeiten helfen können. Dies geschieht basierend auf einem sozio- und regionalökonomischen Profil der Geschäftsstraße, das sich aus lokalen sekundärstatistischen Daten, einer Kartierung der Liegenschaften und 13 Expertengesprächen mit mannigfaltigen Stakeholdern speist. Es kann gezeigt werden, dass ein breit gefächerter Nutzungs- und Funktionsmix jenseits von Handelsaktivitäten mit einer integrierten Nahversorgungsfunktion, gepaart mit Kiezcharakter und einer Kuration, die offen für neuartige institutionelle Verbünde mit der Zivilgesellschaft ist, innerstädtische Geschäftsstraßen sehr widerstandsfähig machen kann. Dies gilt insbesondere dann, wenn die Geschäftsstraße zusätzlich in einen Kiez eingebettet ist, auf einen räumlich verwurzelten Kundenstamm trifft und eben auf dessen lokaleren Lebensradien (z. B. als gesellschaftlicher Treffpunkt) Bezug nimmt.
Designing Hierarchical ZSM-5 Materials for Improved Production of LPG Olefins in the Catalytic Cracking of Triglycerides
Creators: name: Vu, Xuan Hoan
name: Armbruster, Udo
Publisher: name: New York, NY : Hindawi
Year: 2019
Subjects: subject: oil
subject: conversion
subject: zeolites
subject: hydrocarbons
subject: fuels
subject: nanocrystalline
subject: biomass
subject: 670

description: LPG olefins (propene and butenes) are key building blocks in the petrochemical industry whose demand has been expanding steadily in recent years. The use of FCC (fluid catalytic cracking) units for conversion of triglycerides is a promising option for the future to boost production of LPG olefins. However, a need for innovative cracking catalysts is rising due to the different nature between petroleum and biomass-derived feedstocks. In this study, series of hierarchical ZSM-5 materials, namely, mesoporous ZSM-5, nanosized ZSM-5, and composite ZSM-5 were prepared, aiming to enhance the production of LPG olefins along with transportation fuels. Mesoporous ZSM-5 materials were synthesized by the postsynthetic modifications involving base treatment and subsequent acid washing, whereas nanosized ZSM-5 and composite ZSM-5 were synthesized by the direct-synthetic routes for a comparative purpose. The obtained materials were characterized by XRD, FTIR, N2 sorption, TEM, AAS, ICP-AES, and NH3-TPD, and their catalytic performance was assessed in the cracking of triolein as a representative of triglycerides under FCC conditions. It was found that the subsequent strong acid washing step of alkaline treated ZSM-5 for removal of aluminum debris and external acid sites is needed to improve the catalytic performance. The resulting mesoporous ZSM-5 material shows higher yields of the desired products, i.e., gasoline and LPG olefins than its parent, commercial ZSM-5 at the almost complete conversion (ca. 90 wt.%). The selectivity toward LPG olefins is also enhanced over all the hierarchical ZSM-5 materials, particularly high for composite ZSM-5 (ca. 94 wt.%). The improved diffusion and lowered acidity of the hierarchical ZSM-5 materials might be responsible for their superior catalytic performance. © 2019 Xuan Hoan Vu and Udo Armbruster.
50 pico arcsecond astrometry of pulsar emission
Creators: name: Pen, Ue-Li
name: Macquart, J. P.
name: Deller, Adam
name: Brisken, Walter
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We use VLBI imaging of the interstellar scattering speckle pattern associated with the pulsar PSR 0834+06 to measure the astrometric motion of its emission. The ~ 5AU interstellar baselines, provided by interference between speckles spanning the scattering disk, enable us to detect motions with sub nanoarcsecond accuracy. We measure a small pulse deflection of ~18+/-2 km (not including geometric uncertainties), which is 100 times smaller than the native resolution of this interstellar interferometer. This implies that the emission region is small, and at an altitude of a few hundred km, with the exact value depending on field geometry. This is substantially closer to the star than to the light cylinder. Future VLBI measurements can improve on this finding. This new regime of ultra-precise astrometry may enable precision parallax distance determination of pulsar binary displacements.
description: 5 pages, corrected type in arxiv abstract
title: Κόστος μεταφοράς συσκευασμένων λυπαντικών και ανάλυση των χρόνων όλων των εργασιών του τμήματος αποθήκης της εταιρείας Mobil Oil Hellas στην εγκατάσταση Δραπετσώνας
Creators: name: Ξύδης Ιωάννης
Publisher: name: Technical University of Crete
Year: 2000

description: Μη διαθέσιμο
Ehretia P. Browne
Creators: name: Miller, James S.
Publisher: name: Zenodo
Year: 2002
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Boraginales
Ehretiaceae
Ehretia

description: EHRETIA P. Browne Civ. Nat. Hist., Jamaica: 168 (1756). TYPE. — Ehretia tinifolia L. Trees or shrubs, often multi-stemmed; glabrous or with an evident indument of simple, 2-3-celled, or multicellular, capitate, glandlular hairs. Leaves alternate, or clustered near the apices of short lateral branches, petiolate, the margin entire or serrate, the venation pinnate, brochididromous or less commonly semicraspedodromous or craspedodromous. Inflorescences terminal, cymose to paniculate. Flowers bisexual; calyx deeply 5-lobed, imbricate or open in bud, the margin ciliate, inner surface glabrous; corolla white, blue, or pink, tubular with 5 spreading to reflexed lobes, these often as long as or longer than the tube; stamens 5, usually exserted, the anthers oblong to ellipsoid; ovary ovoid, 2- or 4-locular, the style 1, terminal, bifid, the stigmas 2, clavate to capitate. Fruits drupaceous, ovoid to nearly spherical, the endocarp separating into 2, 2-seeded pyrenes or into 4, 1-seeded pyrenes, or rarely remaining entire, the pyrenes often reticulate or ridged on the exterior surface, but not winged. A pantropical genus with three species in the Neotropics, about 10 in Africa, and perhaps 20 more in Asia. Seven species are known from Madagascar and the Comores, five of which are newly described.
description: Published as part of Miller, James S., 2002, A revision of Ehretia (Boraginaceae) for Madagascar and the Comoro Islands, pp. 137-157 in Adansonia (3) (3) 24 (2) on page 142, DOI: 10.5281/zenodo.5180490
Searching for Outbursts in the Ground-Based Photometry of 67P/Churyumov-Gerasimenko
Creators: name: Gardener, Daniel
name: Snodgrass, Colin
name: Ligier, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: 67P/Churyumov-Gerasimenko is a Jupiter-family comet that was the target of the Rosetta mission, the first mission to successfully orbit and land a probe on a comet. This mission was accompanied by a large ground-based observing campaign. We have developed a pipeline to calibrate and measure photometry of comet 67P during its 2016 perihelion passage, making use of all visible wavelength broadband imaging collected across a wide range of facilities. The pipeline calibrates the brightness of the comet to a common photometric system (Pan-STARRS 1) using background stars within the field allowing for compilation and comparison of multiple data sets. Results follow the predictions based on previous apparitions: 67P shows no obvious change in activity levels from orbit-to-orbit and coma colours remain constant throughout the apparition. We detected an outburst on 2015 August 22 of $\sim$0.14 mag. The brightness and estimated mass of this outburst puts it in line with the outbursts directly observed on the nucleus by Rosetta. An in situ outburst was observed at the same time as the one seen from the ground, however linking these two events directly remains challenging.
description: 13 pages, 8 figures, accepted for publication in MNRAS
title: Ομαδοποίηση m-αντικειμένων σε n-ομάδες με χρήση  μεθόδων του μαθηματικού προγραμματισμού
Creators: name: Καλενδέρογλου Παύλος
Publisher: name: Technical University of Crete
Year: 2000

description: Μη διαθέσιμο