cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Area, Delay, and Energy-Efficient Full Dadda Multiplier
Creators: name: Munawar, Muteen
name: Shabbir, Zain
name: Akram, Muhammad
Publisher: name: arXiv
Year: 2023
Subjects: subject: Systems and Control (eess.SY)
subject: Hardware Architecture (cs.AR)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: B.6.0; B.7.0
subject: 03B80

description: The Dadda algorithm is a parallel structured multiplier, which is quite faster as compared to array multipliers, i.e., Booth, Braun, Baugh-Wooley, etc. However, it consumes more power and needs a larger number of gates for hardware implementation. In this paper, a modified-Dadda algorithm-based multiplier is designed using a proposed half-adder-based carry-select adder with a binary to excess-1 converter and an improved ripple-carry adder (RCA). The proposed design is simulated in different technologies, i.e., Taiwan Semiconductor Manufacturing Company (TSMC) 50nm, 90nm, and 120nm, and on different GHz frequencies, i.e., 0.5, 1, 2, and 3.33GHz. Specifically, the 4-bit circuit of the proposed design in TSMCs 50nm technology consumes 25uW of power at 3.33GHz with 76ps of delay. The simulation results reveal that the design is faster, more power-energy-efficient, and requires a smaller number of transistors for implementation as compared to some closely related works. The proposed design can be a promising candidate for low-power and low-cost digital controllers. In the end, the design has been compared with recent relevant works in the literature.
description: 16 pages, 15 figures, 6 tables
Creep of a quartz polycrystal in controlled chemical environments
Creators: name: Wang., Jian Nong
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
ASOSIY KAPITALGA KIRITILGAN INVESTITSIYALARNING IQTISODIY MOHIYATI
Creators: name: Berdialiyev, Xaydar
name: Saydullayeva, Zaynab
name: Tursunova, Shaxnoza
Publisher: name: Zenodo
Year: 2024

description: Maqolada O'zbekiston respublikasida investitsiyalarning asosiy kapitalga yo’ltirishning asosiy mohiyati va iqtisodiy o’sishning dolzarbligi o’rganiladi. Chunki, investitsiyalar ko'p jihatdan nafaqat alohida mintaqalarning rivojlanishini va tashkilotlarning asosiy fondalarini o'sishini, balki butun davlatning iqtisodiy o'sishini ta'minlaydi, bandlik darajasini oshirishga yordam beradi. Iqtisodiy o’sishni ta’minlash va mo’tadil investitsion muhitni shakllantirish uchun investitsiyalarni jalb etishning samarali strategiyasi va mexanizmlarini ishlab chiqish uchun mamlakatimizdagi investitsiya faolligining hozirgi holatini ilmiy jihatdan tahlil qilish zarur. Tayanch so'zlar: investitsiyalar, asosiy kapital, asosiy vositalar, kpital qo'yilmalar, investitsiyalarning mintaqaviy tarkibi, to'g'ridan-to'g'ri xorijiy investitsiyalar, statistik tahlil, iqtisodiy o’sish.
title: Simulation and experimental wettability studies on low salinity water injection and CO₂ low salinity water-alternating-gas injection
Creators: name: Ma, Shijia
Publisher: name: Memorial University of Newfoundland
Year: 2022

description: Low salinity water injection (LSWI) and CO₂ low salinity water-alternating-gas (LSWAG) injection are promising enhanced oil recovery (EOR) methods with economic and environmental advantages. Wettability alteration is considered as one of the important mechanisms. Over the past decades, there have been studies conducted to model LSWI process using shift in relative permeability curves as an indicator for wettability alteration and understand the changes in wettability induced by CO₂ and low salinity water using contact angle measurements. However, inherent limitation exits in these measurements and linking the measured contact angle to relative permeability curves for oil recovery prediction requires more research. The objective of this research is to examine whether changes in quick contact angle measurements during the injection of low salinity water or CO₂ can be used to predict oil recovery instead of conducting time-consuming core flooding or relative permeability experiments. This will be achieved first by a comprehensive literature review on CO₂ LSWAG injection to understand the mechanisms and the effect of different parameters. Secondly, the effect of temperature and interpolation techniques to relative permeability curves considering different driving forces to wettability alteration is studied. Thirdly, a newly-proposed “displacement” method for measuring contact angle is employed to study the effect of CO₂, low salinity water and injection schemes. Finally, the possibility of linking contact angle to relative permeability curves for oil recovery prediction is explored. It is found that the inclusion of hysteresis in CO₂ LSWAG injection optimization is crucial. Increasing injection temperature in the sandstone block model leads to an increase in oil recovery due to the promotion of chemical reactions with increasing temperature. The proposed “displacement” method is capable of capturing the effect of geochemical reactions and surface forces and can be used for screening optimal brine composition and injection schemes. Linking the measured contact angle to relative permeability curves has a potential for predicting oil recovery.
Πώς μπορεί η έννοια του Safe- and - Sustainable -by-design να υποστηρίξει τους στόχους της Ευρωπαϊκής Πράσινης Συμφωνίας σε σχέση με την κλιματική ουδετερότητα
Creators: name: Χαλκιά, Ιωάννα Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Ευρωπαϊκή Πράσινη Συμφωνία
Κυκλική οικονομία
Βιωσιμότητα
European Green Deal
Circular economy
Sustainability
Safe and sustainable by design

description: Η Ευρωπαϊκή Πράσινη Συμφωνία (Green Deal), το νέο Σχέδιο Δράσης της Ευρωπαϊκής Επιτροπής για μια Κυκλική Οικονομία, η νέα Ευρωπαϊκή Βιομηχανική Στρατηγική και η Στρατηγική Χημικών για την Αειφορία που ξεκίνησε τον Οκτώβριο του 2020 είναι κάποια από τα φιλόδοξα σχέδια για την επίτευξη μιας βιώσιμης, δίκαιης και χωρίς αποκλεισμούς οικονομίας της Ευρωπαϊκής Ένωσης. Σύμφωνα με τους Στόχους Βιώσιμης Ανάπτυξης των Ηνωμένων Εθνών για το 2030, αυτές οι πολιτικές απαιτούν κάθε νέο υλικό ή προϊόν να είναι όχι μόνο λειτουργικό και οικονομικά αποδοτικό, αλλά ασφαλές και βιώσιμο για να διασφαλίζεται η συμμόρφωση με τους κανονισμούς και η αποδοχή από τους καταναλωτές. Σε αυτή την εργασία αρχικά πραγματοποιήθηκε μία βιβλιογραφική έρευνα πάνω στις έννοιες της κυκλικής οικονομίας, της πράσινης χημείας και της βιωσιμότητας. Μελετήθηκε η Ευρωπαϊκή Πράσινη Συμφωνία της Ευρωπαϊκής Ένωσης και τα μέτρα που πάρθηκαν για μία κλιματικά ουδέτερη Ευρώπη, ενώ αναλύθηκε πώς τα “Safe and sustainable by design” προϊόντα και υλικά θα μας βοηθήσουν να πετύχουμε αυτούς τους στόχους.
description: The European Green Deal (Green Deal), the European Commission's new Action Plan for a Circular Economy, the new European Industrial Strategy and the Chemicals Strategy for Sustainability launched in October 2020 are an ambitious plan to achieve a sustainable, equitable and the inclusive economy of the European Union. In line with the United Nations 2030 Sustainable Development Goals, these policies require that any new material or product be not only functional and cost-effective, but safe and sustainable to ensure compliance and consumer acceptance. In this thesis, a literature review on the concepts of circular economy, green chemistry and sustainability was initially conducted. The European Green Deal of the European Union and the measures taken for a climate neutral Europe were studied, while it was analyzed how the "Safe and sustainable by design" products, and processes will help us to achieve these goals.
Physical habitat changes and benthic macroinvertebrate assemblages at tributary confluences in cobble-bed upland streams
Creators: name: Wallis., Elizabeth
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Aξιολόγηση ex vivo της επίδρασης του διμεθυλικού σουλφοξειδίου (DMSO) στην προσφυτική ικανότητα του ενδοδοντικού φυράματος εποξικής ρητίνης ΑΗ26 στην οδοντίνη
Creators: name: Δημόπουλος, Φώτιος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Προσφυτική ικανότητα
Φύραμα
Διμεθυλικό σουλφοξείδιο
Bond strength
Sealer
Dimethyl sulfoxide

description: Σκοπός της παρούσας ερευνητικής μελέτης είναι να εξεταστεί η προσφυτική ικανότητα του φυράματος ΑΗ26 σε ανθρώπινη μυλική οδοντίνη επεξεργασμένη με διμεθυλικό σουλφοξείδιο (DMSO).Χρησιμοποιήθηκαν 35 τρίτοι γομφίοι οι οποίοι εξάχθηκαν από το εργαστήριο Οδοντοφατνιακής Χειρουργικής. Πριν τη χρήση τους απολυμάνθηκαν και στη συνέχεια πραγματοποιήθηκαν κατάλληλες τομές με μικροτόμο σκληρών οδοντικών ιστών και τα δοκίμια εγκιβωτίστηκαν σε χάλκινες μήτρες. Η επιφάνεια πρόσφυσης ορίστηκε με κύλινδρο PLA εκτυπωμένου σε 3D εκτυπωτή και έγινε η επεξεργασία της οδοντίνης με τα απαραίτητα υγρά διακλυσμού και τοποθέτηση DMSO. Τέλος, πραγματοποιήθηκε η τοποθέτηση του φυράματος.Tα δείγματα διατηρήθηκαν σε επωαστικό κλιβανο και υποβλήθηκαν σε δοκιμασία διάτμησης. Δεν παρατηρήθηκε στατιστικά σημαντική διαφορά μεταξύ των ομάδων.Σημειώθηκε ότι οι μέσες τιμές των δειγμάτων, αλλά και οι τυπικές αποκλίσεις ήταν εξαιρετικά παρόμοιες μεταξύ των δύο δειγμάτων. Η αντοχή δεσμού πρόσφυσης του φυράματος AH26 ήταν αντίστοιχη με αυτή μετά από επεξεργασία της οδοντίνης με DMSO, υποδηλώνοντας τη μη στατιστικά σημαντική επίδραση του DMSO στην προσφυτική ικανότητα του φυράματος.
description: The purpose of this study was to examine the bond strength of AH26 to human coronal dentine exposed to DMSΟ. Thirty-five mandibular third molar human teeth from extracted within 4-month period were used and stored in 0,2% thymol at 4ﹾC. All teeth disinfected and sectioned below the cementoenamel junction with a diamond wafering blade. The crown was then split longitudinally in buccolingual direction from both mesial and distal surface of the teeth with a low-speed diamond disk saw. The remaining specimen was cut by the same diamond in the middle and outer mesial and distal surfaces of each specimen was wet-polished until it was smooth and flat using 600-grit silicon carbide paper. Every specimen was pre-treated with 2 ml of 2,5% NaOCl and 17% EDTA solution for 2 minutes each to remove smear layer. Dentine sample embedded in copper ring resting on a glass slab. A light-cured acrylic material was used to fill the remaining volume of the ring in order to secure the specimens. Modified stationary clamps were used to stabilize the plastic cylinders over substrate and standardize bonding area.The mean shear bond strengths and standard deviations were almost the same between the two groups. Examination of all fractured surfaces revealed the bond failure was mainly adhesive to dentine for AH26 sealer without DMSO. From the results of this study, we conclude that DMSO has no substantial effect on the bond strength of AH26 root sealer to dentine. Further studies should investigate the optimal use of DMSO to enhance the bond strength to dentine in an effort to improve the adhesion and seal of obturation materials.
Electrical Detection of Spin Backflow from an Antiferromagnetic Insulator/Y3Fe5O12 Interface
Creators: name: Lin, Weiwei
name: Chien, C. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Spin Hall magnetoresistance (SMR) has been observed in Pt/NiO/Y3Fe5O12 (YIG) heterostructures with characteristics very different from those in Pt/YIG. We show that the SMR in Pt/NiO/YIG strongly correlates with spin conductance, both sharing very strong temperature dependence due to antiferromagnetic magnons and spin fluctuation. This phenomenon indicates that spin current generated by spin Hall effect in the Pt transmits through the insulating NiO and is reflected from the NiO/YIG interface. Inverted SMR has been observed below a temperature which increases with the NiO thickness, suggesting spin-flip reflection from the antiferromagnetic NiO exchange coupled with the YIG.
description: 12 pages, 4 figures
Η πνευματική και φιλανθρωπική κίνηση της Μεγαλωνύμου Κοινότητας Σταυροδρομίου Πέραν Κωνσταντινουπόλεως κατά την περίοδο 1923 – 1955
Creators: name: Εφφές, Νικόλαος (Αρχιμ. Σαμουήλ)  Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Σταυροδρόμι
Εκπαίδευση
Λωζάννη
Stavrodromion
Education
Lausanne

description: Η παρούσα μελέτη πραγματεύεται το πνευματικό και φιλανθρωπικό κίνημα της Κοινότητας Σταυροδρομίου Κωνσταντινουπόλεως από το 1923 έως το 1955. Η περίοδος αυτή θεωρείται, όπως τελικά φαίνεται από τις πηγές, η πιο γόνιμη περίοδος από την ίδρυση της Τουρκικής Δημοκρατίας το 1923. Δυστυχώς, διακόπτεται από τις δύσκολες καταστάσεις, που βίωσε η ελληνική κοινότητα με τα γεγονότα του πογκρόμ του 1955 και έκτοτε δεν έχει επιστρέψει στην προηγούμενη κατάσταση.Έμφαση δίνεται στην πνευματική κίνηση, και σε όλους τους φορείς που την αποτελούν. Εξετάζονται επίσης η Παιδεία, οι σχέσεις και η συνεργασία της Εκκλησίας με την κεντρική επιτροπή (εφορεία) της κοινότητας, οι σχέσεις με τους κληρικούς που υπηρετούν στις Εκκλησίες της και το ειδικό καθεστώς εξάρτησης που υπήρχε μεταξύ τους. Στη συνέχεια, μια δεύτερη πτυχή που αναπτύσσεται σε αυτή τη μελέτη, είναι η φιλανθρωπική κίνηση. Διερευνώνται οι πόροι, το προσφυγικό ζήτημα και ο αντίκτυπός του στη ζωή της Κοινότητας και τη μεταχείρισή του, τη φροντίδα των φτωχών και των απόρων όπως και των φιλανθρωπικών αδελφοτήτων και γενικά των φιλανθρωπικών οργανώσεων που έχουν συσταθεί για την αντιμετώπιση των πιο αδύναμων μελών της Κοινότητας.
description: The present study deals with the spiritual and charitable movement of the Stavrodromion Community of Constantinople, from 1923 to 1955. This period is considered, as finally viewed from the sources, to be the most fruitful period since the foundation of the Turkish Republic in 1923. Unfortunately, it is interrupted by the difficult situations, that the Greek community experienced with the events of the pogrom of 1955, and since then it has not returned to the previous state. Emphasis is given to the spiritual movement, and to all the carriers that constitutes it. The Education, the relations and the cooperation of the Church with the central committee (ephorate) of the community, the relations with the clergy who serve in its Churches, and the special status of dependence that ruled between them are examined as well. Afterwards, a second aspect which is developed in this study, is namely the Community charity movement. Its resources, the refugee issue and its impact on the life of the Community and its treatment, the care of the poor and needy and the philanthropic fraternities and in general the charities set up to deal with the weakest members of the Community are investigated.
title: Implementierung und Vergleich zweier Skelettierungsalgorithmen für Baum-Punktwolken
Creators: name: Schaake, Jannis
Publisher: name: Hochschule Hannover
Year: 2023
Subjects: subject: 004 Informatik

description: Im Rahmen dieser Bachelorarbeit werden zwei Skelettierungsalgorithmen für Baum-Punktwolken implementiert und miteinander verglichen. Darüber hinaus werden zwei Erweiterungen für einen der beiden Algorithmen präsentiert.
LogitMat : Zeroshot Learning Algorithm for Recommender Systems without Transfer Learning or Pretrained Models
Creators: name: Wang, Hao
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Recommender system is adored in the internet industry as one of the most profitable technologies. Unlike other sectors such as fraud detection in the Fintech industry, recommender system is both deep and broad. In recent years, many researchers start to focus on the cold-start problem of recommender systems. In spite of the large volume of research literature, the majority of the research utilizes transfer learning / meta learning and pretrained model to solve the problem. Although the researchers claim the effectiveness of the approaches, everyone of them does rely on extra input data from other sources. In 2021 and 2022, several zeroshot learning algorithm for recommender system such as ZeroMat, DotMat, PoissonMat and PowerMat were invented. They are the first batch of the algorithms that rely on no transfer learning or pretrained models to tackle the problem. In this paper, we follow this line and invent a new zeroshot learning algorithm named LogitMat. We take advantage of the Zipf Law property of the user item rating values and logistic regression model to tackle the cold-start problem and generate competitive results with other competing techniques. We prove in experiments that our algorithm is fast, robust and effective.
Heat and charge transport measurements to access single-electron quantum characteristics
Creators: name: Moskalets, Michael
name: Haack, Geraldine
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the framework of the Floquet scattering-matrix theory we discuss how electrical and heat currents accessible in mesoscopics are related to the state of excitations injected by a single-electron source into an electron waveguide. We put forward an interpretation of a single-particle heat current, which differs essentially from that of an electrical current. We show that the knowledge of both a time-dependent electrical current and a time-dependent heat current allows the full reconstruction of a single-electron wave function. In addition we compare electrical and heat shot noise caused by splitting of a regular stream of single-electron excitations. If only one stream impinges on a wave splitter, the heat shot noise is proportional to the well-known expression of the charge shot noise, reflecting the partitioning of the incoming single particles. The situation differs when two electronic streams collide at the wave splitter. The shot noise suppression, due to the Pauli exclusion principle, is governed by different overlap integrals in the case of charge and of heat.
description: 15 pages, 5 figures, invited contribution for a focus issue on 'Single-electron control in solid-state devices' in Physica Status Solidi (b)
Abiotic catalysis : the nexus between soil chemistry and catalysis in organic chemistry
Creators: name: Wallis., Philip James
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Spectral Analysis of ionospheric density variations measured with the large radio telescope in the Low-Latitude region
Creators: name: Mangla, Sarvesh
name: Datta, Abhirup
Publisher: name: arXiv
Year: 2023
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Geophysics (physics.geo-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The low-latitude ionosphere is a dynamic region with a wide range of disturbances in temporal and spatial scales. The Giant Metrewave Radio Telescope (GMRT) situated in the low-latitude region has demonstrated its ability to detect various ionospheric phenomena. It can detect total electron content (TEC) variation with precision of 1 mTECU and also can measure TEC gradient with an accuracy of about $\rm7\times 10^{-4}\,TECU\,km^{-1}$. This paper describes the spectral analysis of previously calculated TEC gradient measurements and validates them by comparing their properties using two bands. The analysis tracked individual waves associated with medium-scale traveling ionospheric disturbances (MSTIDs) and smaller waves down to wavelengths of $\sim$ 10 km. The ionosphere is found to have unanticipated changes during sunrise hours, with waves changed propagation direction as the sun approached the zenith. Equatorial spread\,$F$ disturbances during sunrise hours is observed, along with smaller structures moving in the same direction.
description: 17 pages, 2 figures, 2 Tables, accepted for publication in Geophysical Research Letters
A synthetic model of the gravitational wave background from evolving binary compact objects
Creators: name: Dvorkin, Irina
name: Uzan, Jean-Philippe
name: Vangioni, Elisabeth
name: Silk, Joseph
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Modeling the stochastic gravitational wave background from various astrophysical sources is a key objective in view of upcoming observations with ground- and space-based gravitational wave observatories such as Advanced LIGO, VIRGO, eLISA and PTA. We develop a synthetic model framework that follows the evolution of single and binary compact objects in an astrophysical context. We describe the formation and merger rates of binaries, the evolution of their orbital parameters with time and the spectrum of emitted gravitational waves at different stages of binary evolution. Our approach is modular and allows us to test and constrain different ingredients of the model, including stellar evolution, black hole formation scenarios and the properties of binary systems. We use this framework in the context of a particularly well-motivated astrophysical setup to calculate the gravitational wave background from several types of sources, including inspiraling stellar-mass binary black holes that have not merged during a Hubble time. We find that this signal, albeit weak, has a characteristic shape that can help constrain the properties of binary black holes in a way complementary to observations of the background from merger events. We discuss possible applications of our framework in the context of other gravitational wave sources, such as supermassive black holes.
description: 13 pages, 6 figures. Accepted for publication in Phys. Rev. D. Revised to reflect final version
Awareness and willingness to participatein community based health insurance scheme in Dubti woreda of, Afar region
Creators: name: Mohammed, Lubaba
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Background:In Ethiopia There are major challenges in the quality of services provided. First, contracted providers differ in their readiness in terms such as pharmacy services, laboratory facilities, reception, and outpatient services. Second, health facilities, especially hospitals, are frequently short of drugs and patients must buy items from outside (private) retailers. Health facilities attribute the shortages mainly to shortages at Pharmaceutical Fund and Supply Agency (PFSA) hubs. The practice of moral hazard by pharmacists at contracted health facilities was reported to exacerbate the shortages. Third, there are frequent breakdowns of medical equipment, due mainly to lack of preventive maintenance but also to health worker negligence and mishandling. Fourth, there are complaints about availability and capacity of staff. Finally, no pilot woreda has systematic, regular, and standard mechanisms for collecting and properly addressing complaints. Evidence from the experience of countries worldwide informed Ethiopia's CBHI design, which eschewed small-scale, voluntary membership and included mechanisms to finance the membership of the poor. The willingness and ability to pay of the pilot woreda population conducted by HSFR during the design phase as well as the assessment of readiness of facilities in the pilot woredas to provide health services informed the design parameters. Objectives:Awareness and willingness to participate in a community based health insurancescheme among household in Dubti woreda of, Afar region. Methodology: community based cross sectional study will be conduct from July 2018 up to June 2019will use recorded information and, structured and pre-test questionnaire will develop and administer to gather information. The data collect from structured questionnaire will be intered in to epi info and analyse by using latest version spss version21. Descriptive statistics as well as bivariate logit analysis and multi variate logistic regression will be used to asses factors affecting participation in a community based health insurance schemes in the study are. Budget: this study will be conduct in a way that minimizes cost, as try to mention below in budget break down34,783.35 Ethiopian birr will need to perform the study. 6
Η ιδιωτική εκπαίδευση στη Θεσσαλονίκη κατά την περίοδο 1949-1974. Σκιαγράφηση του τοπίου της ιδιωτικής εκπαίδευσης στην πόλη της Θεσσαλονίκης
Creators: name: Γκαραγκάνη, Ελένη Φωτίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Κατοχή, Εμφύλιος
Εκπαίδευση
Δευτεροβάθμια Ιδιωτική Εκπαίδευση στη Θεσσαλονίκη
Occupation, Greek Civil War
Education
Private, Secondary Education in Thessaloniki

description: Η παρούσα εργασία επιχειρεί να διερευνήσει τα αίτια του φαινομένου της επέκτασης της Δευτεροβάθμιας Ιδιωτικής Εκπαίδευσης με το τέλος του Εμφυλίου, το οποίο αφορά κυρίως στα μεγάλα αστικά κέντρα, στην Αθήνα και στη Θεσσαλονίκη και αναζητά απαντήσεις σε δύο ερωτήματα: α) σε ποιες κοινωνικές ομάδες στη μετεμφυλιακή Ελλάδα απευθύνονταν τα νεοϊδρυθέντα ιδιωτικά σχολεία Μέσης Εκπαίδευσης και β) με ποιες εκπαιδευτικές -και όχι μόνο- πολιτικές, πάνω στο κατεστραμμένο εκπαιδευτικό και κοινωνικό τοπίο, κτίζεται το «νέο». Η εργασία διαιρείται σε δύο μέρη. Το Α’ μέρος αναφέρεται στο ιστορικό πλαίσιο της Κατοχής, και του Εμφυλίου και στο αντίστοιχο εκπαιδευτικό πλαίσιο. Στο Β’ μέρος η εστίαση μεταφέρεται στη Θεσσαλονίκη και, τελικά, σε ένα σχολείο, που επιλέχθηκε ως «πεδίο δοκιμής», με βάση κριτήρια που προέκυψαν από τη μελέτη του ιστορικού και εκπαιδευτικού πλαισίου, με σκοπό την ανίχνευση συνδέσεων ανάμεσα στα κοινωνικά χαρακτηριστικά του σχολείου και στα γενικότερα χαρακτηριστικά της ελληνικής κοινωνίας, που εντοπίστηκαν κατά την μελέτη του ιστορικού πλαισίου.
description: The aim of the present thesis is to investigate into the causes of the expansion of private, Secondary Education occurred in big, urban centres, mostly in Athens and Thessaloniki, in the aftermath of the Greek Civil War and seeks to answer two questions 1.Which social groups were the newly formed private schools of Secondary Education intended for? 2. Which educational, and political, strategies and practices were employed and put into practice in order to promote this “new” educational landscape since the educational and social background was destructed in the wake of the preceding wars? The study is divided into two (2) parts. In the first one, the study revolves around the historical and the respective educational context during the historical eras of the Occupation and the Greek Civil War. In the second part, Thessaloniki and finally a school in Thessaloniki becomes the focal point provided that it was chosen as a point of reference and as a plateau for assessment and feedback on the basis of the criteria that resulted from the study of the educational and historical context. The ultimate objective was to spot any possible connections between the social profile of the specific school and the more general characteristics of the Greek society, which were brought to light in the process of delving into the historical context.
Time evolution of linearized gauge field fluctuations on a real-time lattice
Creators: name: Kurkela, Aleksi
name: Lappi, Tuomas
name: Peuron, Jarkko
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Classical real-time lattice simulations play an important role in understanding non-equilibrium phenomena in gauge theories and are used in particular to model the prethermal evolution of heavy-ion collisions. Due to instabilities, small quantum fluctuations on top of the classical background may significantly affect the dynamics of the system. In this paper we argue for the need for a numerical calculation of a system of classical gauge fields and small linearized fluctuations in a way that keeps the separation between the two manifest. We derive and test an explicit algorithm to solve these equations on the lattice, maintaining gauge invariance and Gauss's law.
description: 8 pages, 4 figures, v2: typos corrected, references added
A Machine-Learned Ranking Algorithm for Dynamic and Personalised Car Pooling Services
Creators: name: Campana, Mattia Giovanni
name: Delmastro, Franca
name: Bruno, Raffaele
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Car pooling is expected to significantly help in reducing traffic congestion and pollution in cities by enabling drivers to share their cars with travellers with similar itineraries and time schedules. A number of car pooling matching services have been designed in order to efficiently find successful ride matches in a given pool of drivers and potential passengers. However, it is now recognised that many non-monetary aspects and social considerations, besides simple mobility needs, may influence the individual willingness of sharing a ride, which are difficult to predict. To address this problem, in this study we propose GoTogether, a recommender system for car pooling services that leverages on learning-to-rank techniques to automatically derive the personalised ranking model of each user from the history of her choices (i.e., the type of accepted or rejected shared rides). Then, GoTogether builds the list of recommended rides in order to maximise the success rate of the offered matches. To test the performance of our scheme we use real data from Twitter and Foursquare sources in order to generate a dataset of plausible mobility patterns and ride requests in a metropolitan area. The results show that the proposed solution quickly obtain an accurate prediction of the personalised user's choice model both in static and dynamic conditions.
description: Accepted from the IEEE 19th International Conference on Intelligent Transportation Systems (ITSC), 2016
Role of personality and risky driving behavior on road traffic accidents among public transport drivers in Addis Abeba, Ethiopia: 2019.
Creators: name: Kemal, Teyiba
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Background: Road traffic accident is one of the top ten leading causes of death in world-wide. Every year 1.35 million peoples around the world die as a result of road traffic collisions. It"s the result of contribution of many factors including environmental, vehicle and human factors and from all factors human factors contribute the major role for the cause of road traffic accident. There is no much evidence how the personality of drivers affects driving behavior and as well as its contribution on accident. Objective: To assess the relationship between of personality and risky driving behavior and their role on road traffic accidents among the public transport drivers in Addis Ababa, Ethiopia 2019. Methods: Institutional based cross sectional study design was conducted from January 01 to February 30, 2019 G.C. Using random selection three hundred seventy seven public transport drivers were selected from operated terminals. Data were collected by trained data collectors through interview using standardized questionnaire. The collected data were entered in Epi-data version 3.1 software and exported to Stata version 14.0 statistical software for analysis. Bivariate and multivariable logistic regressions were used to know the final predictors with a cut of point of P-value < 0.05 level of significance. Structural equation modeling program was applied to assess the relationship between personality and risky driving behaviors. Result: Totally 374 drivers participated in the study with response rate of 99.2%. The overall magnitude of risky driving behavior the study participants was 49%. Those had anger personality and speeding behavior had increased odds of road traffic accident. Two of personality trait were found positively significant with risky driving behaviors, driver anger (β = 0.24, P= 0.000) and sensational seeking (β = 0.13, P=0.000) with 58% total variance. Both personality and risky driving behaviors directly predicted road traffic accident with 23% of variance. Conclusion and recommendation: The findings of the study show, anger and speeding had important contributor to accident and personality had significant association with risky driving behavior. And both personality and risky driving behavior had strong effect accident. And transport authority should design strategy and promote that helps to reduce speeding
Immer Ärger mit den Flächeninhalten!
Creators: name: Hammer, Christoph
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Ein Thema, das von der Grundschule bis zur Sekundarstufe II immer wieder auftaucht, zahlreiche Anwendungen im Alltag hat und anschaulichen Unterricht ermöglicht das sind doch beste Voraussetzungen für erfolgreiches Lernen! Allerdings zeigen Erfahrungen aus der Unterrichtspraxis erhebliche Probleme, die sich auch in verschiedenen Studien widerspiegeln. So konnten im nationalen Test PISA 2003 nur etwa 60% der beteiligten Schüler den Flächeninhalt eines L-förmigen Flächenstücks berechnen (Ulfig, 2013). Für diese offensichtlichen Schwierigkeiten gibt es vielfältige Ursachen. Hier soll diesbezüglich jedoch nicht ins Detail gegangen werden. Vielmehr werden auf der Basis grundlegender Betrachtungen Vorschläge für einen Unterricht gemacht, der nach Möglichkeit die genannten Probleme verringert.
Malnutrition and Measles ig. G. Elisa in 0-23 Months children Comparison of Seroconversion and Vaccine Side Effects, Addis Ababa
Creators: name: Abebe, Amare
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 1988

description: A cohort of 9 23 mo nths old Addis Ababa children were assessed as to their immune response to meas l es vaccine in relation to their nutriti o nal status. Of the 307 pairs of blood spec imens analyzed for meas les antibody, 207 ( 67.4 %) (32.6%) had had a negati ve preva c einiltion tit er while 10 0 prevaccination titers th a t we r e s e rop os iti~ e. Am 0 n g the s e ron ega t i ve s a 95% s e ro c 0 n "e r s ion rat e was obtained with no difference b et"r>en the malnourished and well n o urish e d. Ther!' Has n o differen ce in side e ffe cts repo rt e d to th e meas l es vaccin e betwe!'n well n ou ri shed and maln o urished c hildr e n. raccination of thos e wh o were seropositive at th e outset didn't r esults in an), booster e f f e c t, de fin e d by a f 0 u r f 0 I d r i s e fr o m the pre \- i 0 U s tite r'. Only 9 (9%) o f these ch ildr e n showed a booster effect. A va lidity test f or his to r y of measles aga inst the laboratory results gave a 9 5. 1% specificity and 3 1% sensitivity rat e . A secon
Οι αντιλήψεις των εκπαιδευτικών, ως προς την αλληλεπίδραση της γονικής ψυχικής διαταραχής και της ψυχοκοινωνικής ανάπτυξης και ακαδημαϊκής επίδοσης των παιδιών στην πρωτοβάθμια εκπαίδευση
Creators: name: Γκόγκα, Χρυσούλα Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Γονική Ψυχική Ασθένεια
Ψυχική Υγεία
Κοινωνικό Μοντέλο
Σχολείο
Οικογένεια
Parental Mental Illness
Mental Health
Social Model
School
Family

description: Η παρούσα διπλωματική εργασία διερευνά τις αντιλήψεις των εκπαιδευτικών, ως προς την αλληλεπίδραση μεταξύ της γονικής ψυχικής διαταραχής και της ψυχοκοινωνικής ανάπτυξης και ακαδημαϊκής επίδοσης των παιδιών στην πρωτοβάθμια εκπαίδευση. Το ενδιαφέρον εστιάζεται στις απόψεις και τις εμπειρίες των εκπαιδευτικών, αναφορικά με τους τρόπους αναγνώρισης και αντιμετώπισης, αντίστοιχα, παιδιών που βιώνουν τη γονική ψυχική ασθένεια στο οικογενειακό τους περιβάλλον. Η μελέτη υιοθετεί την ποιοτική προσέγγιση με τη χρήση ημι-δομημένων συνεντεύξεων σε οκτώ (8) έμπειρους εκπαιδευτικούς, τόσο στην ιδιωτική όσο και στη δημόσια εκπαίδευση. Το θεωρητικό μέρος πλαισιώνεται από βασικές θέσεις θεωρητικών της ψυχικής υγείας, συνάμα με άλλους ερευνητές, που στηρίχτηκαν στα θεωρητικά μοντέλα της ψυχικής υγείας, αλλά κυρίως στην επισκόπηση και τα αποτελέσματα παρόμοιων ερευνών. Κεντρικός σκοπός, αλλά και στόχος της εν λόγω εργασίας – πέρα από την παρουσίαση των αποτελεσμάτων που προέκυψαν από την υποκειμενική γνώμη και εμπειρία των συμμετεχόντων εκπαιδευτικών – είναι η εκ νέου εννοιολόγηση της γονικής ψυχικής διαταραχής με βάση το κοινωνικό μοντέλο της αναπηρίας στο πλαίσιο μιας ενταξιακής και πρωτοποριακής εκπαίδευσης.
description: This dissertation investigates the topic «Mental Illness & School» in the light of teachers' views, regarding the impact of parental mental illness on psychosocial development and academic performance of children in primary education. The interest is focused on the views and experiences of teachers, regarding the ways of recognizing and treating, respectively, children who experience parental mental illness in their family environment. The study adopts a qualitative approach and is conducted through semi-structured interviews with eight (8) experienced teachers, in both private and public education. The theoretical part is framed by basic positions of mental health theorists, along with other researchers, who relied on theoretical models of mental health, but mainly on the overview and results of similar research. The main purpose, but also the aim of this work – in addition to the presentation of the results obtained from the subjective opinion and experience of the participating teachers – is the re-conceptualization of parental mental disorder based on the social model of disability in an inclusive and pioneering education.
Topologically stable magnetization states on a spherical shell: curvature stabilized skyrmions
Creators: name: Kravchuk, Volodymyr P.
name: Rößler, Ulrich K.
name: Volkov, Oleksii M.
name: Sheka, Denis D.
name: Brink, Jeroen van den
name: Makarov, Denys
name: Fuchs, Hagen
name: Fangohr, Hans
name: Gaididei, Yuri
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topologically stable structures include vortices in a wide variety of matter, such as skyrmions in ferro- and antiferromagnets, and hedgehog point defects in liquid crystals and ferromagnets. These are characterized by integer-valued topological quantum numbers. In this context, closed surfaces are a prominent subject of study as they form a link between fundamental mathematical theorems and real physical systems. Here we perform an analysis on the topology and stability of equilibrium magnetization states for a thin spherical shell with easy-axis anisotropy in normal directions. Skyrmion solutions are found for a range of parameters. These magnetic skyrmions on a spherical shell have two distinct differences compared to their planar counterpart: (i) they are topologically trivial, and (ii) can be stabilized by curvature effects, even when Dzyaloshinskii-Moriya interactions are absent. Due to its specific topological nature a skyrmion on a spherical shell can be simply induced by a uniform external magnetic field.
description: 12 pages, 4 figures
Επίδραση θερμικής τροποποίησης στις φυσικές -θερμικές ιδιότητες ξυλείας κωνοφόρων
Creators: name: Ιωακειμίδου, Αναστασία Αναστάσιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Θερμική τροποποίηση
Θερμομονωτικές ιδιότητες
Κωνοφόρο
Thermal modification
Thermal insulation properties
Coniferous

description: Σε Ευρωπαικό και Παγκόσμιο επίπεδο σημαντικές είναι η έρευνες γύρω από τον τομέα της ξυλείας και της συντήρησης του. Βελτιωμένη ξυλεία εισέρχεται στην βιομηχανία και δίνει προιόντααξιόλογα. Στην έρευνα αυτή βλέπουμε την συμπεριφορά ξύλου κονωφόρων και συγκεκριμένα της ελάτης. Πάρθηκαν δείγματα σε διαστάσεις σύμφωνα με τα διεθνή πρότυπα, μια ομάδα από αυτά παρέμειναν ακατέργαστα και δύο αλλές επεξεργάστηκαν σε δύο επίπεδα. Έπειτα, μελετήθηκε η αντίδραση των δοκιμίων και του μάρτυρα και αυτών που τροποποιήθηκαν, σε εξωτερικές συνθήκες περιβάλλοντος για περίπου τέσσερις μήνες σε τεχνητή κατασκευή με την μία πλευρά να έρχεται σε άμεση επαφή με την ηλιακή ακτινοβολία. Η θερμική επεξεργασία αλλάζει τις ιδιότητες του ξύλου και το μετατρέπει σε βελτιωμένο υλικό. Κατά την έκθεση των δοκιμίων σε συνθήκες περιβάλλοντος διαπιστώθηκε ότι η μεταφορά της θερμότητας στα τμήματα ξύλου που χειρίστηκαν θερμικά μειώνεται σε σχέση με τα τμήματα που δεν επεξεργάστηκαν.
description: At European and global level, research into the timber sector and its preservation is important. Improved timber enters the industry and gives valuable products. In this research we see the behavior of coniferous wood and specifically of spruce. Dimensional samples were taken according to international standards, one group of them remained raw and two others were processed on two levels. Then, the reaction of the specimens and the control and those that were modified, in external environmental conditions for about four months in artificial construction with one side coming into direct contact with sunlight was studied. Heat treatment changes the properties of wood and turns it into an improved material. Exposure of the specimens to ambient conditions found that the heat transfer to the thermally treated wood sections was reduced compared to the untreated sections.
Mass-Metallicity Relation for Local Analogs of High-Redshift galaxies: Implications for the Evolution of the Mass-Metallicity Relations
Creators: name: Bian, Fuyan
name: Kewley, Lisa
name: Dopita, Michael
name: Blanc, Guillermo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We revisit the evolution of the mass-metallicity relation of low- and high-redshift galaxies by using a sample of local analogs of high-redshift galaxies. These analogs share the same location of the UV-selected star-forming galaxies at $z\sim2$ on the [OIII]/H$β$ versus [NII]/H$α$ nebular emission-line diagnostic (or BPT) diagram. Their physical properties closely resemble those in $z\sim2$ UV-selected star-forming galaxies being characterized in particular by high ionization parameters ($\log q\approx7.9$) and high electron densities ($n_e\approx100~\rm{cm}^{-3}$). With the full set of well-detected rest-frame optical diagnostic lines, we measure the gas-phase oxygen abundance in the SDSS galaxies and these local analogs using the empirical relations and the photoionization models. We find that the metallicity difference between the SDSS galaxies and our local analogs in the $8.5
description: 10 pages, 4 figures, accepted for ApJ
Ο ρόλος των ψηφιακών εφαρμογών στην αυτό-αντιλαμβανόμενη γνώση περιεχομένου φοιτητών/-τριών Τμημάτων Θετικών Επιστημών, Τεχνολογίας, Μηχανικών και Μαθηματικών (STEM) και αυτοπεποίθηση για επαγγελματική αποκατάσταση
Creators: name: Κάλφα, Βασιλική Αστέριου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: STEM και ψηφιακές εφαρμογές
Αυτο-αντιλαμβανόμενη γνώση περιεχομένου
Επαγγελματική αποκατάσταση
STEM and digital applications
Self-perceived content knowledge
Employability

description: Η παρούσα διπλωματική εργασία μελετά το ρόλο των ψηφιακών εφαρμογών σε δύο (2) βασικούς τομείς, την αυτο-αντιλαμβανόμενη γνώση των φοιτητών/τριών των Τμημάτων Θετικών Επιστημών, Τεχνολογίας, Μηχανικών και Μαθηματικών, αλλά και την αυτοπεποίθηση που έχουν ως προς την επαγγελματική τους αποκατάσταση. Η ανασκόπηση της βιβλιογραφίας που πραγματοποιήθηκε έδειξε ότι οι προηγούμενες έρευνες αναφέρονται γενικά είτε στην επαγγελματική αποκατάσταση είτε στις ψηφιακές εφαρμογές στην εκπαίδευση και διαπιστώθηκε ότι δεν υπάρχουν έρευνες που να εξετάζουν τα συγκεκριμένα ερωτήματα. Για την έρευνα χρησιμοποιήθηκε ερωτηματολόγιο κλειστού τύπου με 27 ερωτήσεις και στάλθηκε στους φοιτητές/τριες των αναφερόμενων Τμημάτων. Η ανάλυση πραγματοποιήθηκε μέσω περιγραφικών στατιστικών, τεστ σημαντικότητας και συσχετίσεων. Τα κυριότερα αποτελέσματα δείχνουν ότι οι φοιτητές/τριες θεωρούν ότι η χρήση των ψηφιακών εφαρμογών είναι σημαντική στο αντικείμενο σπουδών τους και επηρεάζει την ποιότητα των γνώσεών τους, σε ένα μεγάλο ποσοστό θεωρούν ότι αναπτύσουν τις πρακτικές τους ικανότητες, ενώ πιστεύουν ότι τους δίνουν περισσότερες ευκαιρίες εργασίας και αυτοπεποίθηση για εργασία στον κλάδο τους.
description: This thesis studies the impact of digital applications in 2 main fields, self-perceived content knowledge of students in the fields of Science, Technology, Engineering and Mathematics, as well as their confidence regarding their employability. During the literature review it was shown that any previous research that was conducted refers to either employability in general or the use of digital applications in education. It was concluded that there is no research to address the questions of the use of digital application in self-perceived content knowledge and employability. A questionnaire with 27 closed-ended questions was created and used to answer the research questions and was sent to the students in the fields of STEM. The analysis was performed with the help of descriptive statistics, significance tests and correlations. The main results show that students consider the use of digital applications to be important in their field of study and affect the quality of their knowledge. Moreover, they consider that they develop their practical skills, while they also believe that the knowledge of digital applications gives them more job opportunities and confidence.
PID Information Types WG final deliverable
Creators: name: Weigel, Tobias
name: DiLauro, Timothy
name: Zastrow, Thomas
Publisher: name: Research Data Alliance
Year: 2015
Subjects: PID
PID Information Types

description: The working group on Persistent Identifier Information Types of the Research Data Alliance concerned itself with the essential types of information associated with persistent identifiers. The working group developed a conceptual model for structuring typed information, an application programming interface for access to typed information and a demonstrator implementing the interface. The final deliverable consists of a summarizing report, the interface specification and a set of exemplary types.
Estimates of the Height and Date of the 25th Cycle of Solar Activity
Creators: name: Obridko, V. N.
name: Sokoloff, D. D.
name: Katsova, M. M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Further development of the work of Obridko et al. [1] based on recent data confirms the assumption that the 25th cycle of solar activity is a medium-low cycle. Its height is expected to be $125.2\pm5.6$, and the expected date of the maximum phase is the end of 2023 or the first quarter of 2024.
description: 4 pages, 2 figures. Published in Astronomical Circular 1658, July 2023