cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Design and experimental investigation of a planar metamaterial Silicon based lenslet
Creators: name: Gascard, Thomas
name: Pisano, Giampaolo
name: Doyle, Simon
name: Shitvov, Alexey
name: Austermann, Jason
name: Beall, James
name: Hubmayr, Johannes
name: Raymond, Benjamin
name: Halverson, Nils
name: Jaehnig, Gregory
name: McKenney, Christopher M.
name: Suzuki, Aritoki
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The next generations of ground-based cosmic microwave background experiments will require polarisation sensitive, multichroic pixels of large focal planes comprising several thousand detectors operating at the photon noise limit. One approach to achieve this goal is to couple light from the telescope to a polarisation sensitive antenna structure connected to a superconducting diplexer network where the desired frequency bands are filtered before being fed to individual ultra-sensitive detectors such as Transition Edge Sensors. Traditionally, arrays constituted of horn antennas, planar phased antennas or anti-reflection coated micro-lenses have been placed in front of planar antenna structures to achieve the gain required to couple efficiently to the telescope optics. In this paper are presented the design concept and a preliminary analysis of the measured performances of a phase-engineered metamaterial flat-lenslet. The flat lens design is inherently matched to free space, avoiding the necessity of an anti-reflection coating layer. It can be fabricated lithographically, making scaling to large format arrays relatively simple. Furthermore, this technology is compatible with the fabrication process required for the production of large-format lumped element kinetic inductance detector arrays which have already demonstrated the required sensitivity along with multiplexing ratios of order 1000 detectors/channel.
description: 10 pages, 8 figures, published in SPIE Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X (https://nanolithography.spiedigitallibrary.org/conference-proceedings-of-spie/11453/1145307/Design-and-experimental-investigation-of-a-planar-metamaterial-silicon-based/10.1117/12.2562692.full)
Πειραματική διερεύνηση για την εύρεση μιας νέας σχέσης μεταξύ της αστράγγιστης διατμητικής αντοχής και του δείκτη υδαρότητας
Creators: name: Αγγελίδης, Τριαντάφυλλος Χ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Αστράγγιστη Διατμητική Αντοχή
Όρια Αtterberg
Ανεμπόδιστη μονοαξονική θλίψη
Δείκτης υδαρότητας
Undrained shear strength
Αtterberg limits
Unconfined uniaxial compression
Liquidity index

description: Η έμμεση εκτίμηση της αστράγγιστης συνοχής Cu από την τιμή του δείκτη υδαρότητας αποτελεί μία από τις πιο γνωστές και ενδιαφέρουσες εμπειρικές σχέσεις στην εδαφομηχανική, καθώς επιτρέπει την εκτίμηση μιας βασικής παραμέτρου της αντοχής των εδαφών με χρήση τιμών φυσικών παραμέτρων. Έχει αποδειχθεί ότι η Cu εξαρτάται από τα γνωστά όρια του Atterberg και παρουσιάζει ιδιαίτερη ευαισθησία στο δείκτη υδαρότητας. Διαπιστώθηκε ότι ενώ τα όρια του Atterberg αναφέρονται σε εδαφικό υλικό διερχόμενο από το κόσκινο Νο40 η περιεχόμενη υγρασία αντιπροσωπεύει όλο το εδαφικό δείγμα. Έτσι επαναπροσδιορίζεται η τιμή της φυσικής υγρασίας Wn για το αργιλικό κλάσμα και κατ’ επέκταση προκύπτει διορθωμένη τιμή για το IL. Για τη συγκεκριμένη έρευνα συλλέχτηκαν δείγματα αργιλικού εδάφους από την ευρύτερη περιοχή του Ν. Θεσσαλονίκης. Έγινε υπολογισμός του δείκτη υδαρότητας IL και της διορθωμένης τιμής ILcor με τη βοήθεια των WL και WP και της αστράγγιστης διατμητικής αντοχής Cu με τη μέθοδο α) πτερυγίου τσέπης και β) ανεμπόδιστης μονοαξονικής θλίψης. Για εδάφη που η θέση τους στο διάγραμμα Casagrande είναι πάνω από τη γνωστή ευθεία Α με τιμές του WL από 35 έως 105 ελέγχθηκαν οι εξισώσεις παλινδρόμησης και προέκυψε μία εξίσωση. Η εξίσωση αυτή αποτελεί μια ικανοποιητική προσεγγιστική εκτίμηση της Cu-IL.
description: The indirect assessment of undrained shear strength Cu from the liquidity index rate, constitutes one of the most known and interesting empirical relations in soil mechanics, as it allows the assessment of a basic parameter of soil strength using natural parameter values. It has been proven that Cu depends on the known Atterberg limits and demonstrates particular sensitivity to the liquidity index. It has been noticed that while the limits of Atterberg refer to soil material passing through the sieve No40, the contained moisture represents the entire soil sample. Thus redefining the value of natural moisture Wn for the clay fraction results to a corrected value for IL. For this particular research clay soil samples were collected from the area of Thessaloniki. The liquidity index IL and the corrected value of IL, ILcor, were calculated using WL, WP and undrained shear strength Cu with the method of a) Vane Test and b ) unconfined uniaxial compression test. The regression equations were tested, for soils’ positions in Casagrande diagram above the known straight line A with values of WL from 35 to 105 and an equation has emerged that gives us the value of undrained shear strength Cu. This equation provides a satisfactory approximation of Cu-IL.
Η Προσωποκεντρική Προσέγγιση του Carl Rogers και η σημασία της για τον Πολιτισμό μας
Creators: name: Ευαγγελινού, Κωνσταντία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Προσωποκεντρική Προσέγγιση
Καρλ Ρότζερς
Σύγχρονος Ελληνικός Πολιτισμός
Person-centered Approach
Carl Rogers
Modern Greek Culture

description: Με βάση όσα παρουσιάστηκαν σε αυτή τη Διπλωματική Εργασία με τίτλο: «Η Προσωποκεντρική Προσέγγιση του Carl Rogers και η Σημασία της για τον Πολιτισμό μας» καταλήγουμε στις εξής συμπερασματικές διαπιστώσεις: Η παρούσα εργασία επιχείρησε να παρουσιάσει ένα οργανωμένο πλαίσιο προτάσεων για την συνεισφορά της Προσωποκεντρικής Προσέγγισης στον Πολιτισμό μας, όπου φαίνεται να υπάρχει μια τεράστια ανάγκη για δημιουργικότητα και έμπνευση στην κοινωνική, εκπαιδευτική, προσωπική και οικογενειακή ζωή. Με δεδομένο ότι οι επιστημονικές ανακαλύψεις και οι αλλεπάλληλες τεχνολογικές εφευρέσεις παρουσιάζουν ρυθμό γεωμετρικής προόδου, διαπιστώνεται ότι οι γενικά πολιτισμικά περιορισμένοι άνθρωποι, κοινότητες και λαοί δεν μπορούν να ανταπεξέλθουν στα προβλήματα που αντιμετωπίζουν. Πολλές από τις σοβαρές επικρίσεις για τον πολιτισμό μας και την πορεία του θα μπορούσαν να αποδοθούν στην έλλειψη δημιουργικότητας. Η Προσωποκεντρική Προσέγγιση ως πρόταση πολιτισμού προτείνει τις συνθήκες που καλλιεργούν την εποικοδομητική δημιουργικότητα επιλέγοντας αξίες που προάγουν τον άνθρωπο μέσω της ανάπτυξης των δυνατοτήτων του, διευρύνοντάς τον μέσω της δημιουργικής προσαρμογής σε ένα μεταβαλλόμενο κόσμο.
description: Based on what was presented in this Diplomatic Thesis entitled: "The Person-Centered Approach of Carl Rogers and its Importance for our Culture" we come to the following concluding remarks: This paper attempted to present an organized framework of proposals for the contribution of the Person-Centered Approaching our Culture, where there seems to be a huge need for creativity and inspiration in social, educational, personal, and family life. Given that scientific discoveries and successive technological inventions present a rate of geometric progress, it is found that generally culturally limited people, communities, and peoples cannot cope with the problems they face. Many of the serious criticisms of our culture and its course could be attributed to a lack of creativity. Person-centered Approaching, as a cultural proposal, proposes the conditions that cultivate constructive creativity by choosing values that promote man through the development of his potential, expanding him through creative adaptation to a changing world.
description: Σε συνεργασία με: Κοινωνικής Θεολογίας (Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών)
Free-stream coherent structures in parallel compressible boundary-layer flows at subsonic Mach numbers
Creators: name: Johnstone, Eleanor C.
name: Hall, Philip
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: As a first step towards the asymptotic description of coherent structures in compressible shear flows, we present a description of nonlinear equilibrium solutions of the Navier--Stokes equations in the compressible asymptotic suction boundary layer (ASBL). The free-stream Mach number is assumed to be $< 0.8$ so that the flow is in the subsonic regime and we assume a perfect gas. We extend the large-Reynolds number free-stream coherent structure theory of \cite{deguchi_hall_2014a} for incompressible ASBL flow to describe a nonlinear interaction in a thin layer situated just below the free-stream which produces streaky disturbances to both the velocity and temperature fields, which can grow exponentially towards the wall. We complete the description of the growth of the velocity and thermal streaks throughout the flow by solving the compressible boundary-region equations numerically. We show that the velocity and thermal streaks obtain their maximum amplitude in the unperturbed boundary layer. Increasing the free-stream Mach number enhances the thermal streaks, whereas varying the Prandtl number changes the location of the maximum amplitude of the thermal streak relative to the velocity streak. Such nonlinear equilibrium states have been implicated in shear transition in incompressible flows; therefore, our results indicate that a similar mechanism may also be present in compressible flows.
description: 20 pages, 3 figures
Influence of hydrographic properties in Saanich Inlet on ontogenetic migration and retainment of the calanoid copepod Neocalanus plumchrus
Creators: name: French, Shirley E.
Publisher: name: University of British Columbia
Year: 2010

description: During some years Neocalanus plumchrus overwinters in Saanich Inlet while in other years they are absent from the fjord (Harrison et al., 1983). The cause of this variation is not known but the annual development of anoxic conditions followed by an intrusion of dense, oxygenated water, was suspected to influence their distribution and abundance. Vertical and horizontal haul samples collected from Saanich Inlet indicated the overwintering population in 1985 (September 1985 to March 1986) was sparse; in September 1986 the population of N. plumchrus was comparably low. In the spring and summer, N. plumchrus is introduced from the Strait of Georgia and Juan de Fuca Strait, and in some years may arise from reproduction within the inlet. So few adults were collected at the three stations in Saanich Inlet in January-March 1986 (<0.20 m⁻³) that their potential contribution to the spring population was considered negligible. Decline in the overwintering population in September 1985 and 1986 appears to be correlated with the occurrence of an extensive deep water renewal. The distribution of N. plumchrus during early stages of their deep water migration (June to August), is influenced by the low oxygen concentrations in the bottom of the inlet (i.e. 0.10-0.30 mL L⁻¹). During the renewal, copepods occurred above the oxygen minimum (75 m) possibly due to their displacement or their avoidance of the low oxygen zone. Subsequently, they were exposed to tidal transport out of the inlet and perhaps to increased predation. On two occasions in which N. plumchrus was present during the winter in Saanich Inlet (1969 & 1974), a high volume of dense water intruded, disrupting the copepod layer during the mixing of the two water masses. Even though a greater volume of water left the inlet some of the copepods could have remained in the water, below sill depth. Neocalanus plumchrus successfully overwinters and reproduces in Sechelt Inlet which is well-oxygenated but has a very shallow sill (15 m) that 'locks' the copepods into the inlet. The fifth copepodite stages also occupy deeper depths in Sechelt Inlet than in Saanich Inlet, even though the bottom depths are comparable. In low oxygen tolerance experiments many factors such as the period of captivity, and the region of origin (i.e. Saanich Inlet versus the Strait of Georgia) caused variable results. Although the minimum oxygen level tolerable during their migration could not be determined, N. plumchrus tolerated levels as low as 0.56 mL L⁻¹ (12% mortality). Sediment trap samples indicate that a massive die off could not account for the loss of N. plumchrus from Saanich Inlet.
title: Business English Elementary. Vocabulary and Practice
Creators: name: ELS IPR BOOKS
Publisher: name: Международный банковский институт имени Анатолия Собчака
Year: 2018

description: Учебное пособие представляет собой вспомогательный элемент для изучающих деловой английский язык, а также для преподавателей, при работе с учебником «Market Leader, Elementary» с целью улучшения освоения лексического и лексико-грамматического материала, представленного в данном учебнике, а также для организации контроля усвоения этого материала.
The impact of Canada/U.S. free trade on the B.C. food processing and beverage sector
Creators: name: Lapointe, Bernard
Publisher: name: University of British Columbia
Year: 2010

description: This research was undertaken to provide a quantitative assessment of the impact of a Canada/U.S. free trade agreement on six B.C. food and beverage processing industries. The objective was achieved by building a partial equilibrium model simulating changes in trade policy. The six industries were modelled as oligopolists in which the degree of oligopolistic behaviour and the industries' characteristics were captured through specified parameters. Following the abolition of trade barriers the model allowed the industries to rationalize, where necessary, and the highest-cost firms in an industry left for the benefit of lower-cost ones. The final effect is measured for each industry through changes in output, employment, trade volume and prices. As different policy scenarios have been simulated for each industry, the results obtained are quite diverse but they generally follow the a priori expectations. In open industries such as meat, fruit and vegetable and flour mixes, results, however differents for each scenario, tend to leave the industries in a better off or no worse off situation. For heavily protected industries like dairy and poultry, very sensitive to the elimination or not of the quota system, the range of possible results between the scenarios is pronounced. It was concluded that the final effect of the abolition of trade barriers on each industry cannot be assessed specifically but in rather general terms.
Wind Power Research for Agriculture
Creators: name: Clark, R. Nolan
name: Clark, R. Nolan
Publisher: name: Unknown
Year: 1981
Subjects: Crop Production/Industries
Livestock Production/Industries
Research and Development/Tech Change/Emerging Technologies
Resource /Energy Economics and Policy

description: Excerpts from the report: The U.S. Department of Agriculture has studied the use of wind energy to generate power for farming and rural applications. The research, carried on by the Department's Agricultural Research Service (ARS), was funded through the U.S. Department of Energy. The purpose of the research was to determine reliability and performance of wind machines, and to identify applications in which wind energy can be most useful and economical. The studies presented here cover six specific applications in using wind power to heat water and cool milk in dairy operations, heat rural structures, operate high- and low-lift irrigation pumping systems, and cool apple storage facilities.
Exploring the relationships of recalled weight-based teasing during childhood with current eating behaviors and psychological characteristics among mothers of preschool-aged children
Creators: name: Park, Kyunghyun
Publisher: name: No Publisher Supplied
Year: 2021

description: Positive healthy eating behaviors and adequate nutrition is critical for preventing diet-related chronic illnesses. Subsequently, emerging studies have consistently recognized weight-based teasing as a salient contributor to pathological eating behaviors and psychological consequences among youth and young adults. Yet, there is limited research concerning the effects of childhood weight-based teasing in the population of mothers which may hamper further research focusing on maternal influences such as eating attitudes and behaviors on their child’s growth and development. Thus, this study sought to explore relationships of current eating behavior and psychological traits, particularly among mothers of preschool-aged children, between those that were and were not weight teased as a child. This is a cross-sectional secondary data analysis from the Home Obesogenicity Measure of Environments (HOMES) online survey of mothers (N=550; mean age 32.35±5.90) with preschool-aged children (i.e., 2 to 5 years old). Findings indicate that nearly a half of mothers (48%) were targeted for weight-based teasing as a child. Binary logistic regression analyses revealed that compared to mothers not weight-teased, mothers that were weight teased were significantly (p<0.05) more likely to be overweight or obese, and have greater emotional, disinhibited, and restraint eating, higher percent total daily calories from fat in their diet, and greater depression severity. Overall, findings emphasize the increased burden of health complications associated with maternal childhood history of weight-based teasing and implications for further research among mothers with young children.
Superconductivity provides a giant enhancement to the spin battery effect
Creators: name: Ojajärvi, Risto
name: Heikkilä, Tero T.
name: Virtanen, P.
name: Silaev, M. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop a theory of the spin battery effect in superconductor/ferromagnetic insulator (SC/FI) systems taking into account the magnetic proximity effect. We demonstrate that the spin-energy mixing enabled by the superconductivity leads to the enhancement of spin accumulation by several orders of magnitude relative to the normal state. This finding can explain the recently observed giant inverse spin Hall effect generated by thermal magnons in the SC/FI system. We suggest a non-local electrical detection scheme which can directly probe the spin accumulation driven by the magnetization dynamics. We predict a giant Seebeck effect converting the magnon temperature bias into the non-local voltage signal. We also show how this can be used to enhance the sensitivity of magnon detection even up to the single-magnon level.
description: 6 pages, 4 figures. Supplementary material: 11 pages, 4 figures
DOAS: Diamond Open Access Standard
Creators: name: de Pablo Llorente, Virginia
name: Rico-Castro, Pilar
name: Rooryck, Johan
Publisher: name: Zenodo
Year: 2024

description: The presentation offers a brief overview of the Diamond Open Access Standard, a new tool developed by the DIAMAS project to promote quality in Diamond open access (OA) publishing.

Presentation slides for the second edition of the DIAMAS Conversation Series for Libraries, held on 24 September 2024.
Input referred low-frequency noise analysis for single-layer graphene FETs
Creators: name: Mavredakis, Nikolaos
name: Jimenez, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The bias-dependence of input referred low-frequency noise (LFN), SVG, is a considerable facet for RF circuit design. SVG was considered constant in silicon transistors but this was contradicted by recent experimental and theoretical studies. In this letter, the behaviour of SVG is investigated for single-layer graphene transistors based on a recently established physics-based complete compact LFN model. A minimum of SVG is recorded at the bias point where maximum transconductance is located which coincides with the peak of the well-known M-shape of the normalized output LFN and the model precisely captures this trend. Mobility fluctuation effect increases SVG towards to lower currents near charge neutrality point (CNP) while carrier number fluctuation and series resistance effects mostly contribute away from CNP; thus, SVG obtains a parabolic shape vs. gate voltage similarly to CMOS devices.
Between time savings and additional effort: Generative AI in the workplace
Creators: name: von Richthofen, Georg
Publisher: name: Zenodo
Year: 2024

description: AI-based chatbots are transforming the workplace significantly. They assist in information retrieval, analysis, and text creation, promising substantial productivity gains. Consequently, generative AI is often portrayed in the media as a catalyst for employee productivity. In practice, however, employees experience it in contradictory ways. While ChatGPT saves time on research, for example, it also requires additional work for fact-checking. This blog post explores the paradoxical impact of generative AI in the workplace.
Energy Research for the Farm: An Overview
Creators: name: Enlow, Robert E.
name: Enlow, Robert E.
Publisher: name: Unknown
Year: 1982
Subjects: Crop Production/Industries
Livestock Production/Industries
Research and Development/Tech Change/Emerging Technologies
Resource /Energy Economics and Policy

description: Excerpt from the report Preface: This Agriculture Information Bulletin (AIB) provides a general overview of agricultural research activities in the area of energy as it relates to farming and ranching. It is an awareness document that tells generally what is being done and what has been accomplished largely during the 1970's in significant areas of agricultural research funded wholly or partially by the U.S. Department of Agriculture (USDA) and State governments, unless otherwise stated. It is written for agricultural leaders, practitioners, farmers, and ranchers—all who advise about farming or who actually till the soil.
Οι μελλοντικές τάσεις της ψηφιακής τεχνολογίας στην ανάπτυξη των εναλλακτικών μορφών τουρισμού. Μελέτη περίπτωσης ο αμπελοοινικός κλάδος στην Ελλάδα
Creators: name: Παρίση, Ευαγγελία
Publisher: name: Culture - Journal of Culture in Tourism, Art & Education
Year: 2023

description: Οι εναλλακτικές μορφές τουρισμού περιλαμβάνουν ειδικά χαρακτηριστικά στοιχεία τα οποία τις διαφοροποιούν από τον μαζικό τουρισμό που γίνεται για λόγους αναψυχής και ψυχαγωγίας. Αποτελούν μια καινούρια φιλοσοφία των τελευταίων χρόνων που δίνει νέες αναπτυξιακές προοπτικές στις τουριστικές χώρες. Απευθύνεται σε κοινό που αναζητάει άλλες μορφές τουρισμού, πέρα από τον παραδοσιακό, ανάλογα με τις ιδιαίτερες ανάγκες, τις προτιμήσεις και τα κίνητρά του. Η τεχνολογία και οι ψηφιακές πλατφόρμες διαδραματίζουν σημαντικό ρόλο στην έγκυρη ενημέρωση για τις υπηρεσίες ή τα προϊόντα, αλλά και στη διαρκή ανανέωση των παροχών που προσφέρει ένας τουριστικός προορισμός, αποτελώντας αναγκαίο εργαλείο που μεταμορφώνει τον τρόπο με τον οποίο σχεδιάζονται και παρέχονται οι τουριστικές εμπειρίες. Ιδιαίτερα για την οινοτουριστική εμπειρία αποτελούν βασικά μέσα υποστήριξης. Η μελέτη επικεντρώνεται στον αμπελοοινικό κλάδο, της οποίας στο θεωρητικό μέρος της παρουσιάζονται στοιχεία που αφορούν την πορεία του Οινοτουρισμού στην Ελλάδα και το εξωτερικό. Στο εμπειρικό μέρος, παρουσιάζεται η μεθοδολογία της έρευνας που εστιάζεται στα οινοποιεία του Νομού Κρήτης. Σκοπός της έρευνας αποτέλεσε η διερεύνηση κατά πόσο τα οινοποιεία του νησιού, έχουν εισάγει τα νέα μέσα της τεχνολογίας στην επιχείρησή τους, πόσο αποδεκτά είναι από τους επισκέπτες τους και ποιες ενέργειες-δράσεις γίνονται για την ανάπτυξη του οινοτουρισμού στην περιοχή. Το ερωτηματολόγιο αποτέλεσε το βασικό ερευνητικό εργαλείο, που συμπληρώθηκε από τους υπευθύνους των οινοποιείων του νομού. Τα αποτελέσματα έδειξαν πως η υιοθέτηση των νέων τεχνολογιών από τις οινοποιητικές επιχειρήσεις επηρεάζουν τις επιλογές των οινοτουριστών. Επιπλέον, επισημάνθηκε η σημαντική πορεία που έχει κάνει η Κρητική αγορά οίνου και τα οινοποιεία γενικότερα για τον κλάδο και οι ενέργειες που χρειάζονται, ώστε να μπορέσει να ανθίσει ο οινοτουρισμός στο νησί.
description: Culture - Journal of Culture in Tourism, Art & Education, Τόμ. 3, Αρ. 3 (2023): Culture
Real-time Nonrigid Mosaicking of Laparoscopy Images
Creators: name: Zhou, Haoyin
name: Jayender, Jagadeesan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The ability to extend the field of view of laparoscopy images can help the surgeons to obtain a better understanding of the anatomical context. However, due to tissue deformation, complex camera motion and significant three-dimensional (3D) anatomical surface, image pixels may have non-rigid deformation and traditional mosaicking methods cannot work robustly for laparoscopy images in real-time. To solve this problem, a novel two-dimensional (2D) non-rigid simultaneous localization and mapping (SLAM) system is proposed in this paper, which is able to compensate for the deformation of pixels and perform image mosaicking in real-time. The key algorithm of this 2D non-rigid SLAM system is the expectation maximization and dual quaternion (EMDQ) algorithm, which can generate smooth and dense deformation field from sparse and noisy image feature matches in real-time. An uncertainty-based loop closing method has been proposed to reduce the accumulative errors. To achieve real-time performance, both CPU and GPU parallel computation technologies are used for dense mosaicking of all pixels. Experimental results on \textit{in vivo} and synthetic data demonstrate the feasibility and accuracy of our non-rigid mosaicking method.
description: published on IEEE Transactions on Medical Imaging
Learning to Expand Audience via Meta Hybrid Experts and Critics for Recommendation and Advertising
Creators: name: Zhu, Yongchun
name: Liu, Yudan
name: Xie, Ruobing
name: Zhuang, Fuzhen
name: Hao, Xiaobo
name: Ge, Kaikai
name: Zhang, Xu
name: Lin, Leyu
name: Cao, Juan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: In recommender systems and advertising platforms, marketers always want to deliver products, contents, or advertisements to potential audiences over media channels such as display, video, or social. Given a set of audiences or customers (seed users), the audience expansion technique (look-alike modeling) is a promising solution to identify more potential audiences, who are similar to the seed users and likely to finish the business goal of the target campaign. However, look-alike modeling faces two challenges: (1) In practice, a company could run hundreds of marketing campaigns to promote various contents within completely different categories every day, e.g., sports, politics, society. Thus, it is difficult to utilize a common method to expand audiences for all campaigns. (2) The seed set of a certain campaign could only cover limited users. Therefore, a customized approach based on such a seed set is likely to be overfitting. In this paper, to address these challenges, we propose a novel two-stage framework named Meta Hybrid Experts and Critics (MetaHeac) which has been deployed in WeChat Look-alike System. In the offline stage, a general model which can capture the relationships among various tasks is trained from a meta-learning perspective on all existing campaign tasks. In the online stage, for a new campaign, a customized model is learned with the given seed set based on the general model. According to both offline and online experiments, the proposed MetaHeac shows superior effectiveness for both content marketing campaigns in recommender systems and advertising campaigns in advertising platforms. Besides, MetaHeac has been successfully deployed in WeChat for the promotion of both contents and advertisements, leading to great improvement in the quality of marketing. The code has been available at \url{https://github.com/easezyc/MetaHeac}.
description: accepted by KDD2021
Anisotropic quasiparticle scattering rates in slightly underdoped to optimally doped high-temperature \LSCO\ superconductors
Creators: name: Chang, J.
name: Shi, M.
name: Pailhes, S.
name: Maansson, M.
name: Claesson, T.
name: Tjernberg, O.
name: Bendounan, A.
name: Sassa, Y.
name: Patthey, L.
name: Momono, N.
name: Oda, M.
name: Ido, M.
name: Mudry, S. Guerrero C.
name: Mesot, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: An angle-resolved photoemission study of the scattering rate in the superconducting phase of the high-temperature superconductor \LSCO\ with $x=0.145$ and $x=0.17$, as a function of binding energy and momentum, is presented. We observe that the scattering rate scales linearly with binding energy up to the high-energy scale $E_1\sim0.4$ eV. The scattering rate is found to be strongly anisotropic, with a minimum along the (0,0)-($π,π$) direction. A possible connection to a quantum-critical point is discussed.
description: Final version published in PRB
The Maslov cocycle, smooth structures and real-analytic complete integrability
Creators: name: Butler, Leo T.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Symplectic Geometry (math.SG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37J30, 37K10, 53D12, 53D25, 57R55, 70H06, 70H07

description: This paper studies smooth obstructions to integrability and proves two main results. First, it is shown that if a smooth topological n-torus admits a real-analytically completely integrable convex hamiltonian on its cotangent bundle, then the torus is diffeomorphic to the standard n-torus. This is the first known result where the smooth structure of a manifold obstructs complete integrability. Second, it is proven that each one of the Witten-Kreck-Stolz 7-manifolds admit a real-analytically completely integrable geodesic flow on its cotangent bundle. This gives examples of topological manifolds all of whose smooth structures admit a real-analytically completely integrable convex hamiltonian on its cotangent bundle. Additional examples are provided by Eschenburgh and Aloff-Wallach spaces.
description: 19 pages; v2: Proposition 4.1 is corrected. Main results are unchanged
On the Number of Facets of Three-Dimensional Dirichlet Stereohedra IV: Quarter Cubic Groups
Creators: name: Sabariego, Pilar
name: Santos, Francisco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 52C22 (Primary), 20H15, 52B10 (Secondary)

description: In this paper we finish the intensive study of three-dimensional Dirichlet stereohedra started by the second author and D. Bochis, who showed that they cannot have more than 80 facets, except perhaps for crystallographic space groups in the cubic system. Taking advantage of the recent, simpler classification of three-dimensional crystallographic groups by Conway, Delgado-Friedrichs, Huson and Thurston, in a previous paper we proved that Dirichlet stereohedra for any of the 27 "full" cubic groups cannot have more than 25 facets. Here we study the remaining "quarter" cubic groups. With a computer-assisted method, our main result is that Dirichlet stereohedra for the 8 quarter groups, hence for all three-dimensional crystallographic groups, cannot have more than 92 facets.
description: 23 pages, 10 figures, 14 tables. Changes from v1: editing and typographic correction
Development of a ³²P-postlabeling assay for O⁶-methylguanine
Creators: name: Lauener, Ronald William
Publisher: name: University of British Columbia
Year: 2010

description: Monitoring of the promutagenic DNA adduct, O⁶-methylguanine, in the exfoliated cells (e.g. oral mucosal) of tissues from individuals exposed to tobacco-specific N-nitrosamines may aid in the evaluation of tissue-specific risk of carcinogenesis. People with high levels of this adduct could be identified and the appropriate intervention taken. Current techniques for detection of O⁶-methylguanine are unsuitable for the measurement of low adduct levels in small tissue samples. This thesis describes the development of a ³²P-postlabeling method for detection of O⁶-methylguanine in microgram amounts of DNA. In the first part of the project I synthesized O⁶-methyldeoxyguanosine 3'-monophosphate (0⁶mdG3'p), needed as a chromatography marker. This was achieved using a two step approach; preparation of 0⁶-methyldeoxyguanosine (0⁶ mdG) followed by chemical phosphorylation with KH₂PO₄ in formamide. The identity of the compound was confirmed by U.V. spectroscopy and enzymatic analysis. This is the first reported synthesis of the modified nucleotide. Using the synthetic marker, high performance liquid chromatography (HPLC) procedures were then developed for isolation of 0⁶mdG3'p from digested DNA prior to postlabeling. The basic method for analysis of 0⁶-methylguanine by ³²P-postlabeling comprises five steps, a) digestion of DNA containing 0⁶-methylguanine to deoxynucleoside 3'-monophosphates using micrococcal nuclease and spleen phosphodiesterase, b) isolation of 0⁶mdG3'p from normal nucleotides using reverse-phase HPLC, c) ³²P-labeling of 0⁶mdG3'p to give 0⁶- methyldeoxyguanosine 3',5'³²P-bisphosphate (0⁶mdG3'5'p) using ³²P-ATP and polynucleotide kinase, d) 2-dimensional polyethyleneimine cellulose thin layer chromatography (PEI-TLC) to resolve 0⁶mdG3'5'p from other radioactive materials and e) autoradiography and scintillation counting to quantitate 0⁶mdG3'5'p. Several variations of the basic technique were then investigated with the goal of improving the sensitivity. One modification, encompassing a second HPLC purification of 0⁶mdG3'5'p showed the greatest sensitivity: 0.5 micromole 0⁶-methylguanine per mole normal nucleotide (0.5 µmole/mole) . Using this method, 0⁶-methylguanine was detected in the DNA of mammalian tissue-culture cells treated with an agent, N-methyl-N-nitrosourea (MNU) known through independent techniques to form this adduct. The development of ³²P-postlabeling methods for detection of other small DNA adducts is feasible using the approach described here for 0⁶- methylguanine. The performance of the ³²P-postlabeling method for 0⁶- methylguanine equals that of the best available methods when microgram quantities of DNA are assayed. This new method will complement existing techniques.
Identification of risk groups : study of infant mortality in Sri Lanka
Creators: name: Kan, Lisa
Publisher: name: University of British Columbia
Year: 2010

description: Multivariate statistical methods, including recent computing-intensive techniques, are explained and applied in a medical sociology context to study infant death in relation to socioeconomic risk factors of households in Sri Lankan villages. The data analyzed were collected by a team of social scientists who interviewed households in Sri Lanka during 1980-81. Researchers would like to identify characteristics (risk factors) distinguishing those households at relatively high or low risk of experiencing an infant death. Furthermore, they would like to model temporal and structural relationships among important risk factors. Similar statistical issues and analyses are relevant to many sociological and epidemiological studies. Results from such studies may be useful to health promotion or preventive medicine program planning. With respect to an outcome such as infant death, risk groups and discriminating factors or variables can be identified using a variety of statistical discriminant methods, including Fisher's parametric (normal) linear discriminant, logistic linear discrimination, and recursive partitioning (CART). The usefulness of a particular discriminant methodology may depend on distributional properties of the data (whether the variables are dichotomous, ordinal, normal, etc.,) and also on the context and objectives of the analysis. There are at least three conceptual approaches to statistical studies of risk factors. An epidemiological perspective uses the notion of relative risk. A second approach, generally referred to as classification or discriminant analysis, is to predict a dichotomous outcome, or class membership. A third approach is to estimate the probability of each outcome, or of belonging to each class. These three approaches are discussed and compared; and appropriate methods are applied to the Sri Lankan household data. Path analysis is a standard method used to investigate causal relationships among variables in the social sciences. However, the normal multiple regression assumptions under which this method is developed are very restrictive. In this thesis, limitations of path analysis are explored, and alternative loglinear techniques are considered.
From Nano-Communications to Body Area Networks: A Perspective on Truly Personal Communications
Creators: name: Kulakowski, Pawel
name: Turbic, Kenan
name: Correia, Luis M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: This article presents an overview of future truly personal communications, ranging from networking inside the human body to the exchange of data with external wireless devices in the surrounding environment. At the nano- and micro-scales, communications can be realized with the aid of molecular mechanisms, Forster resonance energy transfer phenomenon, electromagnetic or ultrasound waves. At a larger scale, in the domain of Body Area Networks, a wide range of communication mechanisms is available, including smart-textiles, inductive- and body-couplings, ultrasounds, optical and wireless radio transmissions, a number of mature technologies existing already. The main goal of this article is to identify the potential mechanisms that can be exploited to provide interfaces in between nano- and micro-scale systems and Body Area Networks. These interfaces have to bridge the existing gap between the two worlds, in order to allow for truly personal communication systems to become a reality. The extraordinary applications of such systems are also discussed, as they are strong drivers of the research in this area.
Hyperbolic plasmon modes in tilted Dirac cone phases of borophene
Creators: name: Torbatian, Zahra
name: Novko, Dino
name: Asgari, Reza
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Hyperbolic materials are receiving significant attention due to their ability to support electromagnetic fields with arbitrarily high momenta and, hence, to achieve very strong light confinement. Here, based on first-principles calculations and many-body perturbation theory, we explore the characteristic of two-dimensional plasmon modes and its hyperbolic properties for two phases of single layer boron hosting tilted Dirac cone, namely, the $hr$-$sB$ and $8Pmmn$ borophene. In-plane anisotropy in borophene is manifested in the structural, electronic, vibrational and optical properties. We find two hyperbolic regimes for both phases of borophene, where the high-energy one is located in the visible range. The $hr$-$sB$ borophene is characterised with an intrinsic high carrier density and it supports strong hyperbolic plasmon modes in the visible part of the spectrum. The $8Pmmn$ borophene, on the other hand, resembles the prototypical Dirac material graphene, and upon carrier doping acquires anisotropic Dirac plasmons in the mid-infrared. We have also investigated the impact of the electron-phonon coupling and Landau damping on these hyperbolic plasmon modes. Our results show that borophene, having high anisotropy, intrinsic high carrier concentration, low-loss hyperbolic Dirac plasmon modes, and high confinement can represent a promising candidate for low-loss broad band surface plasmon polariton devices.
description: 10 pages, 7 figures
Afforestation supported by agroforestry systems - ERDŐTELEPÍTÉS TÁMOGATÁSA AGROERDÉSZETI RENDSZEREKKEL
Creators: name: Kovács, Klaudia
name: Vityi, Andrea
Publisher: name: Zenodo
Year: 2019
Subjects: agroforestry
afforestation
alley cropping
agroerdészet
erdősítés
köztes termesztés

description: A faanyag iránti növekvő igény kielégítése miatt egyre nagyobb nyomás nehezedik az erdőgazdálkodásra. Az erdőből és faültetvényekből származó dendromassza kihozatal mennyiségi és minőségi paramétereinek javításában az agroerdészeti gyakorlatok alkalmazásának is szerepe lehet a jövőben. Az erdei köztes termesztés hagyományos gyakorlat a Kárpát medencében. Hazai tapasztalatok és vizsgálati eredmények e gyakorlat pozitív hatását igazolják a talaj-mikroklímára, valamint a faegyedek növekedési paramétereire, mely jelentősen befolyásolhatja az erdőfelújítások sikerességét.
Role of chain stiffness on the conformation of single polyelectrolytes in salt solutions
Creators: name: Wei, Yu-Fu
name: Hsiao, Pai-Yi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Conformation of single polyelectrolytes in tetravalent salt solutions is investigated under the framework of a coarse-grained model, using Langevin dynamics simulations. The chain size, studied by the radius of gyration, shows three different variational behaviors with salt concentration, depending on the chain stiffness. According to these behaviors, polyelectrolytes of fixed chain length are classified into three categories: flexible chain, semiflexible chain, and rigid chain. The worm-like chain model with persistence length predicted by the Odijk-Skolnick-Fixman theory is found to be able to qualitatively describe the end-to-end distance at low salt concentration. In a low-salt region, a flexible polyelectrolyte extends more significantly than a semiflexible chain, and in a high-salt region, regardless of chain stiffness, a chain attains a dimension comparable to that of its neutral polymer. The chain stiffness influences both the local and the global chain structures. A flexible chain exhibits a zigzagged local structure in the presence of salt ions and the condensed structure is a disordered, random globule. A semiflexible chain is locally smooth, and the condensed structure is orderly packed, taking a form such as hairpin or toroid. Moreover, the chain stiffness can also affect the nature of the coil-globule transition. The transition is occurred in a discrete manner for semiflexible chain, whereas in a continuous way for flexible chain. This discrete feature is happened not only at low salt concentration when a semiflexible chain is collapsed, but also at high salt concentration when the collapsed chain is reexpanded. At the end, the effects of chain stiffness and salt concentration on the conformation of single polyelectrolytes are summarized in a schematic state diagram.
description: 52 pages, 15 figures, accepted for publication in JCP
Όταν η λογοτεχνία συναντά τον κινηματογράφο στη σχολική τάξη. Ένα διδακτικό παράδειγμα
Creators: name: Σύρμου, Ευανθία
Publisher: name: Culture - Journal of Culture in Tourism, Art & Education
Year: 2023

description: Η σχέση του κινηματογράφου με τη λογοτεχνία υπήρξε από την αρχή της εμφάνισής του πολύ στενή. Το μαρτυρά το πλήθος των κινηματογραφικών ταινιών που βασίζονται σε λογοτεχνικά έργα, η μεγάλη εμπορική επιτυχία που τα ακολούθησε αλλά και η καλλιτεχνική αναγνώριση και η αποδοχή που εισπράττουν. Η λογοτεχνία και ο κινηματογράφος διαλέγονται, καθώς ο κινηματογράφος χρησιμοποιεί την αφηγηματική παράδοση της λογοτεχνίας ως αφετηριακό υλικό για τη διαμόρφωση των κινηματογραφικών ειδών. Ωστόσο, υπάρχει διαφορά ανάμεσα σε κινηματογράφο και λογοτεχνία, όσον αφορά στη χρήση των μέσων αφήγησης. Βασικό μέσο του κινηματογράφου είναι η εικόνα, ενώ της λογοτεχνίας η γλώσσα. Συνεπώς, οι αλλαγές που προκύπτουν κατά τη μεταφορά λογοτεχνικού έργου στον κινηματογράφο είναι λογικά αναπόφευκτες, καθώς, τόσο οι πρώτες ύλες των τεχνών όσο και η γλώσσα τους και οι συμβάσεις που χρησιμοποιούνται, είναι διαφορετικές. Στην παρούσα ανακοίνωση, θα παρουσιαστεί ένα διδακτικό παράδειγμα, όπου επιχειρείται η συγκριτική προσέγγιση του διηγήματος «Μετά τον χαρακτηριστικό ήχο» του Αχιλλέα Κυριακίδη και της κινηματογραφικής μεταφοράς του, της ταινίας μικρού μήκους «Μετά τον χαρακτηριστικό ήχο», σε σενάριο και σκηνοθεσία Αχιλλέα Κυριακίδη, με την αξιοποίηση των μεθοδολογικών εργαλείων της συγκριτικής αφηγηματολογίας αλλά και του κώδικα της κινηματογραφικής γλώσσας. Η διδακτική εφαρμογή πραγματοποιήθηκε στο σχολείο της διδάσκουσας, στο πλαίσιο εργαστηρίου για τη Λογοτεχνία. Στόχος του εργαστηρίου ήταν οι μαθητές/ τριες, μέσα από τη δημιουργική ανάγνωση του διηγήματος και την ενεργό παρακολούθηση της ταινίας, να συζητήσουν, να σκεφτούν και να αποκτήσουν γνώσεις πάνω σε ζητήματα/ ερωτήματα όπως: ομοιότητες και διαφορές των δυο τεχνών, χαρακτηριστικά των διαφορετικών κωδίκων που χρησιμοποιούν, αλληλεπιδράσεις μεταξύ τους, το ζήτημα της πιστότητας της κινηματογραφικής μεταφοράς ενός λογοτεχνικού έργου. Με κατάλληλα φύλλα εργασίας, οι μαθητές/ τριες εργάστηκαν συνεργατικά, με στόχο τον εντοπισμό των διαφορών στην κινηματογραφική μεταφορά του έργου αλλά και την κατανόηση των προθέσεων και των επιλογών του δημιουργού του διηγήματος και της ταινίας.
description: Culture - Journal of Culture in Tourism, Art & Education, Τόμ. 3, Αρ. 3 (2023): Culture
Εφαρμογή των συνθετικών πολυμερών στη συντήρηση ιστορικών υφασμάτων
Creators: name: Καραγιαννίδου, Ευρύκλεια
Publisher: name: Culture - Journal of Culture in Tourism, Art & Education
Year: 2023

description: Ορισμένα υφάσματα, κεντήματα και παραδοσιακές φορεσιές, δημιουργούν ένα εντυπωσιακό σύvoλo σε μουσειακές και ιδιωτικές συλλογές. H ταυτοποίηση της χημικής τους σύστασης, καθώς και οι συνθήκες κάτω από τις οποίες αυτά επηρεάζονται, παίζουν σημαντικό ρόλο στη σωστή συντήρησή τους. Γενικά, τα υφάσματα επηρεάζονται από διάφορους παράγοντες όπως είναι το φως, η ατμοσφαιρική ρύπανση, τα έντομα, ορισμένοι μικροοργανισμοί, οι οποίοι μεμονωμένα ή συνεργατικά μπορούν να προκαλέσουν σημαντική απώλεια της αντοχής τους και τελικά την ολοκληρωτική καταστροφή τους. H ταχύτητα της αποσύνθεσης εξαρτάται σε μεγάλο βαθμό από το περιβάλλον, αλλά δεν πρέπει να αγνοηθεί και η φύση των ινών των υφασμάτων. Κατά τα τελευταία 50 χρόνια έχει χρησιμοποιηθεί ένας μεγάλος αριθμός συνθετικών πολυμερών ως μέσο συντήρησης των υφασμάτων που δρουν είτε ως στερεωτικές, είτε ως συγκολλητικές ύλες.
description: Culture - Journal of Culture in Tourism, Art & Education, Τόμ. 3, Αρ. 3 (2023): Culture
Control of stripe domain wall magnetization in perpendicular anisotropy multilayers
Creators: name: Salikhov, Ruslan
name: Samad, Fabian
name: Böhm, Benny
name: Schneider, Sebastian
name: Pohl, Darius
name: Rellinghaus, Bernd
name: Ullrich, Aladin
name: Albrecht, Manfred
name: Lindner, Jürgen
name: Kiselev, Nikolai S.
name: Hellwig, Olav
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the controlled switching of domain wall (DW) magnetization in aligned stripe domain structures, stabilized in [Co (0.44 nm)/Pt (0.7 nm)]$_X$ ($X = 48$, 100, 150) multilayers with perpendicular magnetic anisotropy. The switching process, induced by an external magnetic field, is monitored by measuring the evolution of the in-plane magnetization. % We show that the remanent in-plane magnetization originates from the polarization of the Bloch-type DWs. With micromagnetic simulations, we reveal that the reversal of the DW polarization is the result of the emergence and collapse of horizontal Bloch lines within the DWs at particular strengths of the external magnetic field, applied opposite to the DW polarization. Our findings are relevant for DW-based magnonics and bubble skyrmion applications in magnetic multilayers.
description: 11 pages, 6 figures