cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Union-set Multi-source Model Adaptation for Semantic Segmentation
Creators: name: Li, Zongyao
name: Togo, Ren
name: Ogawa, Takahiro
name: haseyama, Miki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper solves a generalized version of the problem of multi-source model adaptation for semantic segmentation. Model adaptation is proposed as a new domain adaptation problem which requires access to a pre-trained model instead of data for the source domain. A general multi-source setting of model adaptation assumes strictly that each source domain shares a common label space with the target domain. As a relaxation, we allow the label space of each source domain to be a subset of that of the target domain and require the union of the source-domain label spaces to be equal to the target-domain label space. For the new setting named union-set multi-source model adaptation, we propose a method with a novel learning strategy named model-invariant feature learning, which takes full advantage of the diverse characteristics of the source-domain models, thereby improving the generalization in the target domain. We conduct extensive experiments in various adaptation settings to show the superiority of our method. The code is available at https://github.com/lzy7976/union-set-model-adaptation.
description: Accepted by ECCV2022
title: Πρωτόκολλα ασυρμάτων δικτύων
titleType: AlternativeTitle
Creators: name: Νέος, Στέφανος
Publisher: name: University of Thessaly
Year: 2009
Subjects: subject: ΗΛΕΚΤΡΟΝΙΚΟΙ ΥΠΟΛΟΓΙΣΤΕΣ -- ΔΙΚΤΥΑ
subject: ΠΡΩΤΟΚΟΛΛΟ ΔΙΚΤΥΟΥ ΥΠΟΛΟΓΙΣΤΩΝ

description: Σκοπός αυτής της μεταπτυχιακής διατριβής ήταν η μελέτη του προγραμματισμού των ζεύξεων ενός δικτύου. Η διαδικασία αυτή συνίσταται στη λήψη αποφάσεων σχετικά με την επιλογή των ζεύξεων του δικτύου που τίθενται σε λειτουργία κάθε χρονική στιγμή. Αρχικά παρουσιάστηκε ο Back - Pressure Algorithm, που αποτελεί έναν ευρέως γνωστό αλγόριθμο για τον προγραμματισμό των ζεύξεων ενός δικτύου. Ορίστηκε το μοντέλο του συστήματος που χρησιμοποιήθηκε στην εργασία και περιγράφηκαν τα βήματα του αλγορίθμου. Ο Back - Pressure Algorithm εφαρμόστηκε σε κάποια δίκτυα και παρουσιάστηκαν τα αποτελέσματα καθώς και συμπεράσματα από τη χρήση του. Στη συνέχεια παρουσιάστηκε ένας διαφορετικός τρόπος χρήσης του Back - Pressure Algorithm, ο Alternative Back - Pressure Algorithm. Η ιδέα για αυτόν τον αλγόριθμο βασίστηκε στα προηγούμενα συμπεράσματα. Συγκεκριμένα προτείνεται η χρήση του Back - Pressure Algorithm ώστε να δημιουργηθεί αρχικά μια βιβλιοθήκη από σύνολα ζεύξεων, που μπορούν να λειτουργήσουν ταυτόχρονα για κάθε δεδομένη τοπολογία, με βάση κάποιες ενδεικτικές τιμές ζήτησης των ζεύξεων του δικτύου. Κατά τη λειτουργία του συστήματος επιλέγεται απλά το κατάλληλο σύνολο ενεργών ζεύξεων που ανταποκρίνεται καλύτερα στις ανάγκες του δικτύου. Ο προτεινόμενος αλγόριθμος εφαρμόστηκε σε διάφορα δίκτυα και συγκρίθηκε με τον Back - Pressure Algorithm. Τα αποτελέσματα των συγκρίσεων έδειξαν ότι πράγματι ο Alternative Back - Pressure Algorithm μπορεί να λειτουργήσει σε πολύ μικρότερο χρόνο σε σχέση με τον Back - Pressure Algorithm, περιορίζοντας όμως την περιοχή λειτουργίας του δικτύου.
THEORETICAL DESCRIPTION OF THERMAL PROCESSES IN THE ENGINE COOLING SYSTEM OF THE TZST CE-220 COTTON PICKER
Creators: name: Tojiboyev, Sherali
name: Axunov, Javlon
Publisher: name: Zenodo
Year: 2023

description: In this article, how thermal processes occur in the cooling system of tractor engines and how to make a separate system for each of the processes, a separate solution has been found for thermal processes in all parts of the engine in the overall system. In addition, the temperature change in the cooling system at different ambient temperatures was calculated.
Anisotropic Transport for Parabolic, Non-Parabolic and Linear Bands of Different Dimensions
Creators: name: Tang, Shuang
name: Dresselhaus, Mildred
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Anisotropic thermoelectrics is a very interesting topic among recent research. The transport distribution function plays the central role on modeling the anisotropic thermoelectrics. The methodology of numerical integrations is used in previous literature on anisotropic transport, which does not capture the sharp change of transport distribution function and density of states at band edges. However, the sharp change of transport distribution function and density of states at band edges plays the central role in enhancing the thermoelectric performance. Thus, an analytical methodology that is robust on modeling the sharp change of transport distribution function and density of states at a band edges is needed. To our best knowledge, there has not been a paper giving the systematic study on the analytical models of anisotropic transport distribution function for different kinds of band valleys in different dimensions under different assumptions. Therefore, the main focus of this present paper is to develop such a robust analytical methodology on modeling the anisotropic transport distribution function. So our contributions are 1) we have developed a systematic method on model the anisotropic transport distribution function, for 3D, 2D and 1D systems, in parabolic, non-parabolic and linear dispersion relations, under both the relaxation time approximation and the mean free path approximation; 2) we have found that the Onsage's relation of transport can be violated under certain conditions; 3) we have compared our newly developed methodology with the traditional used numerical methodology.
Additional file 1 of Phosphoproteomics revealed cellular signals immediately responding to disruption of cancer amino acid homeostasis induced by inhibition of l-type amino acid transporter 1
Creators: name: Okanishi, Hiroki
name: Ohgaki, Ryuichi
name: Xu, Minhui
name: Endou, Hitoshi
name: Kanai, Yoshikatsu
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer
subject: Hematology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1: Figure S1. Amino acid levels of BTC cells treated with JPH203. Each amino acid amount was normalized by protein amount (pmol/μg protein): LAT1 substrates in KKU-055 (A), KKU-100 (C), and KKU-213 (E); non-LAT1 substrates in KKU-055 (B), KKU100 (D), and KKU-213 (F). Figure S2. Reproducibility between biological replicates of phosphoproteomics conducted on KKU-055, KKU-100, and KKU-213. Scatter plots showing log2 fold changes of phosphoproteome between biological replicates of JPH203-treated/Control samples of 15 min (A) and 30 min (B) treatment are shown in each cell line. Plots of differentially phosphorylated sites are shown in red. Figure S3. Changes of phosphorylation caused by LAT1 inhibition in phosphoproteomics conducted on KKU-055, KKU-100, and KKU-213 cells. Volcano plots were generated by plotting –log10 p-values against log2 fold changes of relative abundance ratio between JPH203-treated and control samples. Differentially phosphorylated sites are indicated in green and cyan for upregulation and downregulation, respectively. Figure S4. Networks of proteins with upregulated (A) and downregulated (B) phosphorylation commonly detected in phosphoproteomics. Proteins with phosphorylation commonly changed in at least two phosphoproteomics results analyzing three cell lines of BTC treated with JPH203 for 15 min and 30 min (a total of 6 results) were subject to SPRING. Figure S5. Changes in the phosphorylation of substrates of suggested key kinases by LAT1 inhibition. Protein extracted from cells treated with 50 mM BCH and control cells was analyzed by Western blot. The phosphorylation at Ser-1469 of TOP2A were decreased by BCH treatment KKU-055 and KKU-100 for 1 h, and KKU-213 for 30 min. Figure S6. Phosphorylation of CK2 substrates of BTC cells treated with JPH203 for 15 and 30 min in Western blot. Phosphorylation on the consensus CK2 substrate motif was detected by a specific antibody. Figure S7. CK2 activity of BTC cells treated with JPH203. The extracted protein of BTC cells treated with 30 μM JPH203 for 15 min was subject to CK2 activity assay by ELISA using p53 N-terminal peptide and p53-pS46 antibody conjugated with horseradish peroxidase.
Modelling Archaeological Excavations. Theoretical Patterns and Practical Recipes
Creators: name: Nenova, Denitsa
Publisher: name: Zenodo
Year: 2022
Subjects: Archaeology
Semantic modelling

description: This presentation discusses the appreciation of modelling patterns while describing the archaeological excavation universe. As a part of the ARIADNEplus project, work has been directed on recognising the immediate necessities and issues of archaeo-modelling and the potential moves forward. The development of standard models and patterns based on a wide range of archaeological experience and a variety of methodologies has the potential to cover the core entities and extensively out-branch within each individual model. Those models can then be documented and made available for use within the community, either as a whole or as individual fields or collections of fields. Common excavation practices have been targeted to identify core entities and problematic areas that need further development.
title: Μεικτή ακέραια βελτιστοποίηση ελάχιστων τετραγώνων για σχεδιασμό πτήσεων και συντηρήσεων αεροσκαφών αποστολών
titleType: AlternativeTitle
title: Mixed integer least squares optimization for flight and maintenance planning of mission aircraft
Creators: name: Κωσταρέλου, Ευτυχία
Publisher: name: University of Thessaly
Year: 2009
Subjects: subject: ΑΕΡΟΣΚΑΦΗ -- ΣΥΝΤΗΡΗΣΗ ΚΑΙ ΕΠΙΣΚΕΥΗ
subject: ΑΛΓΟΡΙΘΜΟΙ

description: Η παρούσα μελέτη αφορά τη βελτιστοποίηση ενός μη γραμμικού μεικτού ακέραιου προβλήματος ελάχιστων τετραγώνων, για το σχεδίασμά πτήσεων και συντηρήσεων αεροσκαφών αποστολών. Η επίλυση του προβλήματος έγινε με τη χρήση ενός αναλυτικού αλγόριθμου αναζήτησης, ο οποίος βασίστηκε σε έναν προγενέστερο αλγόριθμο τετραγωνικού προγραμματισμού (quadratic programming). Φυσικά, επί του συγκεκριμένου αλγόριθμου έγιναν όλες οι τροποποιήσεις οι οποίες κρίθηκαν απαραίτητες για την επίλυση του προβλήματος που πραγματεύεται η παρούσα εργασία. Αρχικά, παρουσιάζεται το κύριο μοντέλο στο οποίο βασίστηκε η παρούσα μελέτη. Στη συνέχεια, αναπτύσσεται ένα θεωρητικό υπόβαθρο σχετικά με την επίλυση του συγκεκριμένου προβλήματος, και βάσει αυτού, η μεθοδολογία που μπορεί να χρησιμοποιηθεί στην πράξη και ο τρόπος με τον οποίον αυτή μπορεί να εφαρμοστεί στο συγκεκριμένο πρόβλημα. Παράλληλα, περιγράφονται και ερεξηγούνται οι προσθήκες στο βασικό μοντέλο και αναπτύσσεται το μαθηματικό μοντέλο του προβλήματος που επιλύθηκε σε αυτή τη μελέτη, το οποίο αποτελεί και το κύριο μέρος αυτής της μεταπτυχιακής εργασίας. Ο κώδικας που χρησιμοποιήθηκε για την υλοποίηση του αλγόριθμου, γράφτηκε σε γλώσσα προγραμματισμού C, και τα απαραίτητα αριθμητικά πειράματα εκτελέστηκαν σε έναν από τους εξυπηρετητές του πανεπιστημίου. Τέλος, παρέχονται τα αποτελέσματα των πειραμάτων αυτών, δύο αριθμητικά παραδείγματα για την κατανόηση της διαδικασίας επίλυσης, καθώς και συμπεράσματα και προτάσεις για μελλοντικές βελτιώσεις αυτού του προβλήματος.
title: Η δραστηριότητα ευρεσιτεχνιών στην Ελλάδα και διεθνώς: διαχρονική εξέλιξη, πρότυπα κατανομής και τεχνολογική εξειδίκευση
titleType: AlternativeTitle
Creators: name: Μαρκάτου, Μαρία Κ.
Publisher: name: University of Thessaly
Year: 2002
Subjects: subject: ΕΥΡΕΣΙΤΕΧΝΙΕΣ
subject: ΤΕΧΝΟΛΟΓΙΚΕΣ ΚΑΙΝΟΤΟΜΙΕΣ

description: Παρατηρήσεις έκδοσης: παρουσιάζεται μερική απώλεια περιεχομένου λόγου βιβλιοδεσίας.
An Ap star catalog based on LAMOST DR9
Creators: name: Shi, Fangfei
name: Zhang, Huawei
name: Fu, Jianning
name: Kurtz, Donald
name: Xiang, Maosheng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a sample of 2700 Ap stars in LAMOST DR9. The candidates are first selected to be in a temperature range typical of Ap stars by using the $BP$-$RP$ color index from Gaia DR3. Then the 5200\,Å flux depression features characteristic of Ap stars are visually checked in LAMOST DR9 spectra. The detailed spectral features are given by applying a modified spectral classification program, MKCLASS. Stellar parameters of these Ap stars such as $T_{\rm eff}$, $\log g$, [Fe/H], [Si/H], and $v{\sin}i$ are either extracted from a hot star catalog or derived through empirical relations and then a statistical analysis is carried out. The evolutionary stages are also discussed. Finally, we discuss the rotation and pulsation features of those who have TESS or Kepler light curves. Among these Ap stars we find 7 new rotation variables, 1 new roAp star, and new $δ$ Scuti pulsation of a previously known roAp star.
Bibliotheken mit Vorstellungskraft – Bausteine für einen Lehrplan für zukünftige Bibliotheksarbeit
Creators: name: Bruijnzeels, Rob
name: Sternheim, Joyce
Publisher: name: Humboldt-Universität zu Berlin
Year: 2018
Subjects: subject: Architektur
subject: Bibliotheksbestand
subject: konzeptuelles Zeitalter
subject: Partizipation
subject: Kreativität
subject: Curriculum
subject: Architecture
subject: FOS: Civil engineering
subject: library collection
subject: conceptual age
subject: participation
subject: creativity
subject: curriculum
subject: 020 Bibliotheks- und Informationswissenschaften

description: Um die Wissensschaffung und Interaktion in ihren Gemeinschaften zu verbessern, müssen Bibliotheken die kollektiven Kenntnisse der Menschen nutzen und deren Aktivitäten und Wissen in ihre Sammlung einbeziehen. Um dies zu erreichen, hat das niederländische Ministerium für Vorstellungskraft einen neuen Arbeitsprozess entwickelt, der die Nutzung des Bibliotheksraums berücksichtigt und zu einem neuen Lehrplan für Bibliothekare und einer neuen Typologie für öffentliche Bibliotheksgebäude führen könnte.
description: To enhance knowledge creation and interaction in their communities, libraries need to tap into the collective insight of people and allow their activities and knowledge to become part of the collection. To achieve this, the Dutch Ministry of Imagination has developed a new work process that affects the use of space and could lead to a new curriculum for librarians and a new typology for public library buildings.
On the motion of charged particles subject to random forces and fields
Creators: name: Πανταζής, Σαράντης
Publisher: name: University of Thessaly
Year: 2009
Subjects: subject: ΡΕΥΣΤΟΔΥΝΑΜΙΚΗ
subject: ΜΕΤΑΦΟΡΑ, ΘΕΩΡΙΑ ΤΗΣ

description: Παρατηρήσεις έκδοσης: α) παρόραμα στη σελιδαρίθμηση. β) παρουσιάζεται μερική απώλεια περιεχομένου λόγου βιβλιοδεσίας.
description: In plasma physics, it is often necessary to study the motion of a charged particle in a magnetic field, modelling the effect of collisions by additive random forces. Following Langevin, the force is taken to be the sum of a friction term, proportional to the velocity, and a fluctuating component referred to as “noise”. This stochastic term is assumed to be a Gaussian stationary process with vanishing mean and a covariance matrix characterized by correlation times which may vanish (“white noise”) or be finite (e.g. “coloured noise”). This problem, for the case of a uniform field, leads to two systems of equations, one for the ID longitudinal motion along the direction of the field and another for the 2D transverse motion perpendicular to it. These two systems can be studied independently. Because of the linearity of the equations, formal solutions are written and expressions for the expectation values of powers of the position and/or the velocity of the particle are obtained. For white noise, the problem has been studied analytically and numerically. However, the case of a stochastic term with finite correlation time has not been considered in detail. Here, the influence of non-white noises is studied and numerical simulations based on two different approaches are presented. In the first approach, by adding an equation for the evolution of the stochastic term, the problem is reduced essentially to that of white noise. However, this technique is not to be adopted in general since it can only reproduce specific kinds of noise. In the second approach the forcing term is modelled by a Fourier series with random, uniformly distributed, phases and may be considered as more general. Simulations with the latter method are presented for a random force with the correlation function of coloured, Gaussian or Lorentzian noise. To judge the extracted accuracy from the computational approaches, the numerical results have also been compared with available analytical solutions. In addition, an extensive parametric study has been performed with respect to various involved parameters including the correlation time and the friction coefficient. This numerical investigation serves for validating and benchmarking purposes of the implemented computational schemes and will be used in more complex problems. The problem of motion of a charged particle inside a space dependent electric field has also been investigated. The governing system of equations is non-linear and can only be solved numerically using the Fourier series approach because the explicit form of the field is not available. Results show good qualitative agreement with benchmark problems. In the future, random motion in electromagnetic fields and inhomogeneous magnetic fields will also be considered.
Multicenter randomized controlled trial of the effects of individual reminiscence therapy on cognition, depression and quality of life: Analysis of a sample of older adults with Alzheimer’s disease and vascular dementia
Creators: name: Pérez-Sáez, Enrique
name: Justo-Henriques, Susana I.
name: Apóstolo, João L. Alves
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective: To determine the effectiveness of a 13-week individual reminiscence therapy (RT) intervention on cognition, memory, executive function, mood, and quality of life of people with Alzheimer’s disease and vascular dementia. Method: Non-protocolized analysis using data from a larger multicenter, single-blind, randomized, parallel two-arm RCT of RT for people with neurocognitive disorders. A sample of 148 people with probable Alzheimer’s disease or vascular dementia attending 23 Portuguese institutions providing care and support services for older adults were selected. Intervention group (n = 74) received 26 individual RT sessions, twice a week for 13 weeks. Control group (n = 74) maintained their treatment as usual. Outcomes were global cognitive function (MMSE), memory (MAT), executive function (FAB), mood (GDS-15), and self-reported quality of life (QoL-AD). All participants were assessed at baseline (T0) and 15 weeks later (T1). Results: The results showed a significant effect of the intervention on global cognition (Group X Time interaction F(1, 128) = 10.542, p = .001, ηp2 = .076), memory (F(1,128) = 9.881, p = .002, ηp2 = .072), and quality of life (F(1,128) = 0.181, p = .671, ηp2 = .001), with medium effect sizes. A small effect on executive function (F(1,127) = 11.118, p = .001, ηp2 = .080) was also found. No effects were found on depressive symptoms (F(1,128) = 0.181, p = .671, ηp2 = .001). Conclusion: Individual RT may have beneficial effects on cognition and quality of life of people with Alzheimer’s disease or vascular dementia.
What is Thermal Runaway? (Introduction)
Creators: name: Office Of Research Experiences & Education
Publisher: name: UL Research Institutes
Year: 2024
Subjects: classificationCode: 400911
subject: Power electronics
classificationCode: 400803
subject: Electrical energy generation (incl. renewables, excl. photovoltaics)
classificationCode: 400507
subject: Fire safety engineering

description: In lithium-ion cells, the movement of electrons and lithium produces electricity. The process of charge and discharge is normally accompanied by a small amount of heat. In ideal conditions, the heat is able to dissipate from the cell. In thermal runaway, the lithium-ion cell generates heat at a rate several times higher than the rate at which heat dissipates from the cell.
Мера актуальности ценности и мера ценности актуальности
Creators: name: Баранецкий А.Н.
Publisher: name: Архонт
Year: 2018
Subjects: МЕРА ЦЕННОСТИ
МЕРА АКТУАЛЬНОСТИ
СОЦИОЛОГИЧЕСКИЕ ПОКАЗАТЕЛИ
СМЕНА ОСНОВ СОЦИУМА
МОРАЛЬНЫЙ ВЫБОР
ПРОЗРЕНИЕ

description: В данном докладе ставилась задача отразить важность мониторинга количественно измеримых параметров инициативности социума. Эти параметры актуальность доминирующих ценностей в динамике изменений и ценностные отношения к растущей или снижающейся актуальности. Последние являют себя в изменении способности общества в целом понимать, чувствовать, ценить и вообще видеть, признавать актуальность.
Конструирование этнотерриториальной идентичности как конфликтогенный фактор (на примере каталонского сецессионизма)
Creators: name: Баранов А.В.
Publisher: name: Архонт
Year: 2018
Subjects: ЭТНОТЕРРИТОРИАЛЬНАЯ ИДЕНТИЧНОСТЬ
КОНСТРУИРОВАНИЕ
КОНФЛИКТОГЕННЫЙ ФАКТОР
СЕЦЕССИОНИЗМ
КАТАЛОНИЯ

description: Статья посвящена выявлению роли конструирования этнотерриториальной идентичности в качестве конфликтогенного фактора сецессионизма в Каталонии (2005-2017 гг.). Внимание автора сосредоточено на политике идентичности партий и предвыборных коалиций, органов власти Каталонии.
Религия и ценности поколений в современной России
Creators: name: Богданова М.В.
Publisher: name: Архонт
Year: 2018
Subjects: РЕЛИГИЯ
ЦЕННОСТИ
ОТНОШЕНИЕ К РЕЛИГИИ
МОЛОДЕЖЬ СОВРЕМЕННОЙ РОССИИ
ВЕРУЮЩИЕ
НЕВЕРУЮЩИЕ

description: Статья посвящена осмыслению взаимосвязи и взаимообусловленности ценностей и такой формы общественного сознания как религии. Показано, что вследствие отсутствия общечеловеческой системы ценностей намечается тенденция к обращению российского общества, в частности, молодого поколения к религии. Религия в данной ситуации является источником конструктивных ценностей, обеспечивающее удовлетворение насущных потребностей российского общества.
Half-lives of $α$ decay from natural nuclides and from superheavy elements
Creators: name: Qian, Yibin
name: Ren, Zhongzhou
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recently, experimental researches on the $α$ decay with long lifetime are one of hot topics in the contemporary nuclear physics [e.g. N. Kinoshita {\sl et al.} (2012) and J. W. Beeman {\sl et al.} (2012) ]. In this study, we have systematically investigated the extremely long-lived $α$-decaying nuclei within a generalized density-dependent cluster model involving the experimental nuclear charge radii. In detail, the important density distribution of daughter nuclei is deduced from the corresponding experimental charge radii, leading to an improved $α$-core potential in the quantum tunneling calculation of $α$-decay width. Besides the excellent agreement between theory and experiment, predictions on half-lives of possible candidates for natural $α$ emitters are made for future experimental detections. In addition, the recently confirmed $α$-decay chain from $^{294}$117 is well described, including the attractive long-lived $α$-decaying $^{270}$Db, i.e., a positive step towards the "island of stability" in the superheavy mass region.
description: 14 pages
Высшее образование в контексте современных глобализационных процессов
Creators: name: Габриелян А.М.
Publisher: name: Архонт
Year: 2018
Subjects: ВЫСШЕЕ ОБРАЗОВАНИЕ
ОБРАЗОВАТЕЛЬНАЯ ПОЛИТИКА
ГЛОБАЛИЗАЦИЯ
ТЕОРИЯ «КОНЦА ГЛОБАЛИЗАЦИИ»

description: Объективно протекающий процесс глобализации породил ряд вызовов и задач системе высшего образования, как на национальном, так и на общемировом уровне. Сегодня помимо государства в процессе принятия решений в этой сфере уже активно участвуют бизнес, гражданское общество, международные организации и союзы. Однако на рубеже второго десятилетия XXI в. актуализируется научный и общественный дискурс, касающийся жизнеспособности глобализационных проектов. Знаковым является ряд политических событий последних лет. В статье исследована теория «конца глобализации» Б. Эммотта, С. Кинга, Ф. Ливеси. Автор приходит к выводу, что, амбивалентность, нелинейность процесса глобализации является ее качественным свойством. Сама глобализация порождает своего ограничителя и регулятора и трансформируется в глокализацию. Несмотря на наличие разных подходов к пониманию современных мировых процессов, система высшего образования должна найти достойные ответы на порождаемые вызовы. От адекватного внедрения в образование составляющих элементов глобализации зависит сама модель будущей системы высшего образования.
Multicenter randomized controlled trial of the effects of individual reminiscence therapy on cognition, depression and quality of life: Analysis of a sample of older adults with Alzheimer’s disease and vascular dementia
Creators: name: Pérez-Sáez, Enrique
name: Justo-Henriques, Susana I.
name: Apóstolo, João L. Alves
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective: To determine the effectiveness of a 13-week individual reminiscence therapy (RT) intervention on cognition, memory, executive function, mood, and quality of life of people with Alzheimer’s disease and vascular dementia. Method: Non-protocolized analysis using data from a larger multicenter, single-blind, randomized, parallel two-arm RCT of RT for people with neurocognitive disorders. A sample of 148 people with probable Alzheimer’s disease or vascular dementia attending 23 Portuguese institutions providing care and support services for older adults were selected. Intervention group (n = 74) received 26 individual RT sessions, twice a week for 13 weeks. Control group (n = 74) maintained their treatment as usual. Outcomes were global cognitive function (MMSE), memory (MAT), executive function (FAB), mood (GDS-15), and self-reported quality of life (QoL-AD). All participants were assessed at baseline (T0) and 15 weeks later (T1). Results: The results showed a significant effect of the intervention on global cognition (Group X Time interaction F(1, 128) = 10.542, p = .001, ηp2 = .076), memory (F(1,128) = 9.881, p = .002, ηp2 = .072), and quality of life (F(1,128) = 0.181, p = .671, ηp2 = .001), with medium effect sizes. A small effect on executive function (F(1,127) = 11.118, p = .001, ηp2 = .080) was also found. No effects were found on depressive symptoms (F(1,128) = 0.181, p = .671, ηp2 = .001). Conclusion: Individual RT may have beneficial effects on cognition and quality of life of people with Alzheimer’s disease or vascular dementia.
Demystifying the Notion of Charisma: Micro-Ethnography on a Veteran-Teacher’s Classroom Practices
Creators: name: Gould-Yakovleva, Olga
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: This IRB-approved and grounded in social semiotics theory micro-ethnographic case study was conducted within a longitudinal ethnography project and is focused on the teaching style of one veteran teacher in a public urban elementary school in the North-Eastern United States. The data in this qualitative micro-ethnographic case study were collected from multiple sources (e.g., field notes, observations, interviews, audio- and video-recordings). The interview data were analyzed using Saldaña’s (2013) thematic and value coding. The focus research participants’ verbal and non-verbal behaviors during her interactions with her students were analyzed in accordance with the micro-ethnographic research traditions. The above data were triangulated with the ones from the multimodal language analysis. This research found that teachers may set the goal and develop in themselves highly attractive for students so-called charismatic professional qualities.
The Rapid Naming Test: Development and initial validation in typically aging adults
Creators: name: Stiver, Jordan
name: Staffaroni, Adam M.
name: Walters, Samantha M.
name: You, Michelle Y.
name: Casaletto, Kaitlin B.
name: Erlhoff, Sabrina J.
name: Possin, Katherine L.
name: Lukic, Sladjana
name: La Joie, Renaud
name: Rabinovici, Gil D.
name: Zimmerman, Molly E.
name: Gorno-Tempini, Maria Luisa
name: Kramer, Joel H.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Objective Progressive word-finding difficulty is a primary cognitive complaint among healthy older adults and a symptom of pathological aging. Classic measures of visual confrontation naming, however, show ceiling effects among healthy older adults. To address the need for a naming test that is sensitive to subtle, age-related word-finding decline, we developed the Rapid Naming Test (RNT), a computerized, one-minute, speeded visual naming test. Method Functionally intact older (n = 145) and younger (n = 69) adults completed the RNT. Subsets of older adults also completed neuropsychological tests, a self-report scale of functional decline, amyloid-β PET imaging, and repeat RNT administration to determine test-retest reliability. Results RNT scores were normally distributed and exhibited good test-retest reliability. Younger adults performed better than older adults. Within older adults, lower scores were associated with older age. Higher scores correlated with measures of language, processing speed, and episodic learning and memory. Scores were not correlated with visuospatial or working memory tests. Worse performance was related to subjective language decline, even after controlling for a classic naming test and speed. The RNT was also negatively associated with amyloid-β burden. Conclusions The RNT appears to be a reliable test that is sensitive to subtle, age-related word-finding decline. Convergent and divergent validity are supported by its specific associations with measures relying on visual naming processes. Ecological validity is supported by its relationship with subjective real-world language difficulties. Lastly, worse performance was related to amyloid-β deposition, an Alzheimer’s disease biomarker. This study represents a key step toward validating a novel, sensitive naming test in typically aging adults.
Проблемы рекрутирования молодежи в состав политической элиты Крыма
Creators: name: Иванков К.В.
Publisher: name: Архонт
Year: 2018
Subjects: КРЫМ
ЭЛИТА
МОЛОДЕЖЬ
УПРАВЛЕНЧЕСКИЕ КАДРЫ

description: В статье рассматриваются некоторые проблемы, связанные с рекрутированием молодежи в состав политической элиты Крыма. Приводятся сведения об основных этапах трансформации политической элиты полуострова, указываются причины её замкнутого характера. Кроме того, рассматриваются основные проекты по подготовке управленческих кадров в Республике Крым.
title: Συναισθηματική νοημοσύνη και εκπαιδευτική ηγεσία
titleType: AlternativeTitle
Creators: name: Νάνου-Ζήση, Σταματία Γ.
Publisher: name: University of Thessaly
Year: 2009
Subjects: subject: ΣΥΝΑΙΣΘΗΜΑΤΙΚΗ ΝΟΗΜΟΣΥΝΗ
subject: ΣΧΟΛΙΚΟΙ ΔΙΕΥΘΥΝΤΕΣ

description: Η έννοια της Συναισθηματικής Νοημοσύνης αναδύθηκε σχετικά πρόσφατα, καθώς για ογδόντα χρόνια περίπου και συγκεκριμένα από τη στιγμή που ο Θορντάϊκ μίλησε για την κοινωνική νοημοσύνη, ελάχιστοι ασχολήθηκαν με τη λειτουργία της και την επιστημονική της ταυτότητα. Η Συναισθηματική Νοημοσύνη, μπορεί να επηρεάσει την κοινωνική αλληλεπίδραση, τη συμπεριφορά των ανθρώπων και σχετίζεται με την εργασία και τις ηγετικές ικανότητες. Η συγκεκριμένη έρευνα αφορά τη Συναισθηματική Νοημοσύνη των Διευθυντών-ντριών σχολείων Δευτεροβάθμιας εκπαίδευσης του Νομού Μαγνησίας, καθώς και ένα δείγμα εκπαιδευτικών και των δύο φύλων και τη σχέση της με το φύλο και τα χρόνια υπηρεσίας. Στην έρευνα πήραν μέρος συνολικά 174 εκπαιδευτικοί, οι οποίοι συμπλήρωσαν ερωτηματολόγιο αυτοαναφοράς, που περιλαμβάνει κλίμακα συναισθηματικής νοημοσύνης με τέσσερις υποκλίμακες. Τα αποτελέσματα κατέδειξαν ότι δεν παρατηρείται γενικά διαφορά στις ικανότητες της Συναισθηματικής Νοημοσύνης σε σχέση με την ηλικία, το φύλο, και τα χρόνια υπηρεσίας τόσο στους Διευθυντές-ντριες όσο και στους εκπαιδευτικούς, ούτε διαφορές μεταξύ των δύο ομάδων. Μια μικρή διαφορά, υπέρ των γυναικών, βρέθηκε μόνο ως προς την ενσυναίσθηση. Επίσης βρέθηκε μια τάση για μείωση της χρήσης του συναισθήματος με την ηλικία, στους Διευθυντές/τριες.
Locus Lock : a business proposal for the commercialization of software-defined GNSS
Creators: name: Nichols, Hailey Alexandra
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Software-defined radio
GNSS
Locus Lock
Commercialization
Business plan

description: This report formalizes a business case for the widespread use of GNSS software-defined radio. Locus Lock, a start-up spinning out of the Radionavigation Lab directed by Dr. Todd Humphreys, is commercializing a software-defined GNSS receiver developed over the past 16 years in the laboratory. The software processing suite, GRID, has been operating in commercial applications over several years. Locus Lock pairs a low-cost Radio-Frequency front-end that downmixes, filters, and digitizes the signal from the satellites with this GNSS software-defined processing suite. The combination of the hardware platform with the software deployed on a general-purpose processor provides end-users with a fully functional receiver that is a key asset for agile and assured position, navigation, and timing (PNT). Locus Lock's mission is to offer centimeter-accurate real-time positioning to ensure globally available, high integrity positioning at a fraction of the cost of current market GNSS solutions. The business case highlights the importance of secure and robust PNT for automated systems, and throughly explains Locus Lock's product and its potential use cases. This report provides a brief status update and performance review of the state-of-the-art software-defined GNSS receiver, GRID, that is to be commercialized. In this performance review, it is noted that GRID's performance has recently achieved a remarkable inflection point: under some processing configurations, the correlation operation, by which each channel's signal is mixed to baseband and de-spread via multiplication against local code and carrier replicas, is no longer the bottleneck process. This represents a major milestone for software-defined GNSS, and paves the way for commercialization opportunities. The proposal further gives insight into the current competitor ecosystem of GNSS receivers and compares their features to Locus Lock's key value propositions: affordability, accuracy, robustness, security, and flexibility. This contribution highlights the clear market need for a robust and secure PNT system, such as Locus Lock's, and offers insight into the largest companies that dominate the GNSS receiver market today. This business proposal's final contribution is to provide an overview of the business operations that are necessary to build and grow Locus Lock into a reputable GNSS receiver provider. Locus Lock aims to revolutionize the market by providing access to a high-performance, high-fidelity GNSS receiver that is applicable to many different use cases globally.
Phase behaviour of fluids in undulated nanopores
Creators: name: Pospíšil, Martin
name: Malijevský, Alexandr
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The geometry of walls forming a narrow pore may qualitatively affect the phase behaviour of the confined fluid. Specifically, the nature of condensation in nanopores formed of sinusoidally-shaped walls (with amplitude $A$ and period $P$) is governed by the wall mean separation $L$ as follows. For $L>L_t$, where $L_t$ increases with $A$, the pores exhibit standard capillary condensation similar to planar slits. In contrast, for $L
Electronic and magnetic properties of the Ti$_5$O$_9$ Magnéli phase
Creators: name: Slipukhina, I.
name: Ležaić, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Structural, electronic and magnetic properties of Ti$_5$O$_9$ have been studied by \textit{ab initio} methods in low-, intermediate- and high-temperature phases. We have found the charge and orbital order in all three phases to be non-stable, and the formation of Ti$^{3+}$-Ti$^{3+}$ bipolaronic states less likely as compared to Ti$_4$O$_7$. Several quasidegenerate magnetic configurations were calculated to have different width of the band gap, suggesting that the reordering of the unpaired spins at Ti$^{3+}$ ions might at least partially be responsible for the changes in conductivity of this material.
description: 8 pages, 5 figures. Submitted to Phys. Rev. B
Региональная идентичность как фактор устойчивого развития территории (на примере ХМАО)
Creators: name: Мартынов М.Ю.
name: Пуртова В.С.
Publisher: name: Архонт
Year: 2018
Subjects: РЕГИОНАЛЬНАЯ ИДЕНТИЧНОСТЬ
ЖИЗНЕННЫЕ СТРАТЕГИИ
ЦЕННОСТИ
УСТОЙЧИВОЕ РАЗВИТИЕ

description: Рассматриваются социально-экономические и социкультурные факторы формирования региональной идентичности. На основе данных социологических исследований анализируется сформированность региональной идентичности в Ханты-Мансийском автономном округе. Делается вывод о важной роли формирования региональной идентичности как фактора устойчивого развития территории.
Формирование городского бренда на примере Ростова-на-Дону
Creators: name: Муравьева Н.Н.
Publisher: name: Архонт
Year: 2018
Subjects: ГОРОДСКАЯ ИДЕНТИЧНОСТЬ
БРЕНД ГОРОДА; БРЕНДИНГ; КРАУДСОРСИНГ

description: Территории как участники конкурентной борьбы и глобальных информационных связях, географическая удаленность между которыми уже не имеет существенного значения, выбирают эффективный курс развития располагать не просто выгодными конкурентными условиями, но и неповторимым символическим капиталом брендом.
Recipes for Success: Quality Control in Mass Spectrometry-based Proteomics
Creators: name: Benjamin, Neely
Publisher: name: Zenodo
Year: 2024

description: Recognizing the critical importance of quality control (QC) is essential in all bioanalytical fields. Fortunately, QC in mass spec-based proteomics is more accessible than ever with a variety of available QC materials and user-friendly QC software. This talk will provide an overview of the different levels of QC, various materials and their applications, detail some QC design options and best practices, and highlight some current QC software. If implemented, these approaches will ensure confidence in proteomics results and minimize laboratory downtime by aiding in experimental, technical, and analytical troubleshooting from sample processing to final results.
Supplementary document for Dynamic correction of astigmatism. - 6277288.pdf
Creators: name: BHOWMICK, AMIT
name: Jamali, Afsoon
name: Bryant, Doug
name: pintz, sandro
name: Bos, Philip
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Details of the steps for multiwave theory for birefringence material.
Этноконфессиональная составляющая гражданского общества
Creators: name: Парахина В.Ю.
Publisher: name: Архонт
Year: 2018
Subjects: ЭТНОКОНФЕССИОНАЛЬНЫЕ ОТНОШЕНИЯ
РЕЛИГИОЗНЫЕ ОРГАНИЗАЦИИ
НАЦИОНАЛЬНО-КУЛЬТУРНЫЕ АВТОНОМИИ
ГОСУДАРСТВЕННО-КОНФЕССИОНАЛЬНЫЕ ОТНОШЕНИЯ
ГРАЖДАНСКОЕ ОБЩЕСТВО

description: В статье рассматривается деятельность религиозных организаций и национально-культурных автономий в качестве институтов гражданского общества и их роль в развитии социального партнерства государства и общественных организаций.
Влияние советской представительной и законодательной власти на государственную внешнюю политику
Creators: name: Пашковский П.И.
Publisher: name: Архонт
Year: 2018
Subjects: СССР
ВНЕШНЕПОЛИТИЧЕСКИЙ МЕХАНИЗМ
ВЕРХОВНЫЙ СОВЕТ
СЪЕЗД НАРОДНЫХ ДЕПУТАТОВ
ПРЕДСТАВИТЕЛЬНАЯ И ЗАКОНОДАТЕЛЬНАЯ ВЛАСТЬ
СОВЕТСКАЯ НОМЕНКЛАТУРА
АППАРАТ ЦК КПСС

description: Предметом исследования является проблема участия советской представительной и законодательной власти во внешнеполитической жизни государства в период 1917-1991 гг. Приведены подходы исследователей. Показано, что в советский период влияние Верховного Совета СССР на внешнюю политику государства не имело определяющего значения. Задачи формирования и реализации внешнеполитического курса страны решались узким кругом лиц высшей советской номенклатурой, а в послевоенные годы в аппарате ЦК КПСС, обладавшим достаточными полномочиями, информацией и экспертными ресурсами. Вследствие реформирования времен «перестройки» роль Верховного Совета во внешнеполитической жизни государства увеличивается. В 1989-1991 гг. этим институтом были осуществлены крупные международно-политические и дипломатические акции для исполнения курса, утвержденного первым Съездом народных депутатов, что привело к значительным изменениям внешнеполитического позиционирования СССР и его отношений с рядом государств, обусловив последующую трансформацию международной системы.
Particle acceleration at ultrarelativistic, perpendicular shock fronts
Creators: name: Kirk, John G.
name: Reville, Brian
name: Huang, Zhi-Qiu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Using an eigenfunction expansion to solve the transport equation, complemented by Monte-Carlo simulations, we show that ultrarelativistic shocks can be effective particle accelerators even when they fail to produce large amplitude turbulence in the downstream plasma. This finding contradicts the widely held belief that a uniform downstream magnetic field perpendicular to the shock normal inhibits acceleration by the first order Fermi process. In the ultrarelativistic limit, we find a stationary power-law particle spectrum of index s=4.17 for these shocks, close to that predicted for a strictly parallel shock.
description: 9 pages, 6 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society
Study Majorana Neutrino Contribution to B-meson Semi-leptonic Rare Decays
Creators: name: Wang, Ying
name: Bao, Shou-Shan
name: Li, Zuo-Hong
name: Zhu, Nan
name: Si, Zong-Guo
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: B meson semi-leptonic rare decays are sensitive to new physics beyond standard model. We study the $B^{-}\to π^{-}μ^{+}μ^{-}$ process and investigate the Majorana neutrino contribution to its decay width. The constraints on the Majorana neutrino mass and mixing parameter are obtained from this decay channel with the latest LHCb data. Utilizing the best fit for the parameters, we study the lepton number violating decay $B^{-}\to π^{+}μ^{-}μ^{-}$, and find its branching ratio is about $6.4\times10^{-10}$, which is consistent with the LHCb data reported recently.
description: 10 pages, 3 figures
Cupid is Doomed: An Analysis of the Stability of the Inner Uranian Satellites
Creators: name: French, Robert S.
name: Showalter, Mark R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have explored the stability of the inner Uranian satellites using simulations based on the most recent observational data. We find that, across a wide range of mass assumptions, the system is unstable, resulting in the eventual crossing of orbits and probable subsequent collision of moons. Cupid and Belinda are usually the first satellites to cross orbits, and they do so on a time scale of 10^3-10^7 years. Cressida and Desdemona are generally the next pair to cross, on a time scale of 10^5-10^7 years. We show that the crossing times are highly sensitive to initial conditions and that Cupid's instability is related to its resonant interactions with Belinda. We also show that a previously discovered power law, which relates orbit crossing time to satellite mass, is valid across a wide range of masses. We generalize the power law to handle two unstable orbital pairs with overlapping lifetimes and show that it can be used to extend the time span of studies of orbital stability in a computationally efficient manner. Our results suggest that the current Uranian satellite system is in transition and that the moons will continue to collide and reaccrete for the foreseeable future.
description: 22 pages, 6 figures, 5 tables
title: Φωτολυτική και φωτοχημική αποχρωμάτωση βαφής τύπου procion hexl navy blue
titleType: AlternativeTitle
Creators: name: Ρήγα, Ανθούλα Π.
Publisher: name: University of Thessaly
Year: 2003
Subjects: subject: ΥΓΡΑ ΑΠΟΒΛΗΤΑ
subject: ΑΠΟΒΛΗΤΑ -- ΕΠΕΞΕΡΓΑΣΙΑ

description: Παρατηρήσεις έκδοσης: κακέκτυπες σελίδες.
description: Η εμφάνιση των προβλημάτων ρύπανσης σήμερα κατέστησε παγκοσμίως αναγκαία την προσπάθεια αναζήτησης και ανάπτυξης μεθόδων αντιρυπανσης Φιλικών προς το περιβάλλον (καθαρές τεχνολογίες). Στην παρούσα Μεταπτυχιακή εργασία γίνεται αφ ενός μέν εκτενής αναφορα στις λεγάμενες «ΓΙΟΜΑ» (Προχωρημένες Οξειόωτικές Μέθοδοι Αντιρύπανσης) αφετέρου γίνεται εφαρμογή μίας εξ αυτών . Στόχος της μελέτης ήταν η εξέταση του αποχρωματισμού του διαλύματος βαφης τυπου Procion Hexl Blue , τοσο μέσω της φωτολυτικης ( αποκλειστικής χρήσής της UV- ακτινοβολίας ) οσο και μεσω της φωτοχημικης επεξεργασίας ( όηλ. του συνδυασμού της UV- ακτινοβολίας και του οξειδωτικού μέσου (Η2Ο2) Προς υλοποίηση αυτου του στοχου , πραγματοποιήθηκε σειρά πειραμάτων σε αντιδραστήρα διαλειποντος έργου όπου η συγκέντρωση του χρώματος προσδιορίστηκε Φασματοφωτομετρικά. Περαιτέρω εκτιμήθηκε η επιρροή των παραμέτρων της αντίδρασης όπως το ΡΗ του διαλύματος, η συγκέντρωση οξειδωτικού μέσου, η αρχική συγκέντρωση της βαφής στο διάλυμα και η ένταση της UV- ακτινοβολίας μέσω του υπολογισμού του χρόνου ημισειας ζωής της αντίδρασης. Ο χρόνος ημίσειας ζωής της αντίδρασης (ti 2 ) ή άλλως ο ρυθμός αποχρωματισμού ελήφθη ως μέτρο σύγκρισης στη συμπεριφορά της κάθε αντίδρασης ξεχωριστά απέναντι στο μηχανισμό απορρόφησης. Παρατηρήθηκαν φαινόμενα ενθαρρυντικά για ενδιάμεσες συγκεντρώσεις του οξειδωτικού (0,10/ο-10/ο) οπού ο 11/2 ήταν μικρότερος έναντι πολύ μικρών συγκεντρώσεων του οξειδωτικού! 0,001%-0,1%). Στην τελευταία περίπτωση καθοριστικό ρολο επαιζε το ΡΗ του διαλύματος όπου μικρές συγκεντρώσεις FhOo ευνοούνται σε όσο πιο αλκαλικό γινόταν περιβάλλον. Μία αύξηση δε του χρόνου ημίσειας ζωής με ανάλογη αύξηση της βαφής ήταν αναμενόμενη. Συμπερασματικά η χρήση των μεθόδων «ΠΟΜΑ» υπερτερούν σαφώς των κλασσικών φυσικοχημικών μεθόδων επεξεργασίας .