cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A classification theory based information systems model
Creators: name: Parsons, Byron Jeffrey
Publisher: name: University of British Columbia
Year: 2009

description: Information systems (IS) development is viewed as a process of transforming users' knowledge about some subject matter into a computer-based system which faithfully represents that knowledge. A critical step in this process is conceptual modelling - the development of an implementation-independent representation of the relevant knowledge. While the importance of conceptual modelling has gained increasing recognition, many existing conceptual models remain based on software, rather than knowledge, constructs. This research adopts the premise that a conceptual model should provide constructs for directly modelling knowledge. Since the subject matter of organizational IS is typically things in organizations, theories of concepts (classification), which deal with the structure and organization of knowledge about things, are an appropriate source of modelling constructs. A classical theory of concepts suggests five knowledge constructs - instance, property, concept, specialization, and composition. The thesis develops formal definitions of each of these constructs. The notion of direct correspondence is then used to define a conceptual information systems model called MIMIC, which contains a corresponding set of constructs - object, attribute, class, specialized class, and composite class. The model offers several contributions to conceptual modelling research and practice, including: 1)minimal requirements for a "good" class structure; 2)naturalness of a lattice structure for class organization; 3)refinements to the meaning of IS-A connections between classes in a lattice; 4)distinction between simple relationships and those which can be regarded as objects; 5)simple foundation for treating time in conceptual modelling; and 6)a normative model of objects under the assumption that a fundamental objective of the object paradigm of computing is to provide a set of natural modelling constructs. The value of the model is further illustrated by using it as a framework to evaluate several other conceptual modelling approaches. The results of this comparison indicate that, while other models do support cognitive constructs to varying degrees, each is weak in supporting some elements of the classical view of concepts. Finally, a detailed example is used to demonstrate the capability of the model for uniformly representing knowledge across several classes of applications.
สภาวะที่เหมาะสมของการอบแห้งเห็ดนางฟ้าด้วยพลังงานแสงอาทิตย์ร่วมรังสีอินฟราเรด
Creators: name: อีลีหย๊ะ สนิโซ
name: มาดีฮะ ประดู่
name: ฟาตีฮะ ยะยี
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2556
Subjects: การอบแห้ง, พลังงานแสงอาทิตย์, รังสีอินฟราเรด, เห็ด

description: 2, 8, วารสารมหาวิทยาลัยราชภัฏยะลา
Two Bright M Dwarfs Hosting Ultra-Short-Period Super-Earths with Earth-like Compositions
Creators: name: Hirano, Teruyuki
name: Livingston, John H.
name: Fukui, Akihiko
name: Narita, Norio
name: Harakawa, Hiroki
name: Ishikawa, Hiroyuki Tako
name: Miyakawa, Kohei
name: Kimura, Tadahiro
name: Nakayama, Akifumi
name: Fujita, Naho
name: Hori, Yasunori
name: Stassun, Keivan G.
name: Bieryla, Allyson
name: Cadieux, Charles
name: Ciardi, David R.
name: Collins, Karen A.
name: Ikoma, Masahiro
name: Vanderburg, Andrew
name: Barclay, Thomas
name: Brasseur, C. E.
name: de Leon, Jerome P.
name: Doty, John P.
name: Doyon, René
name: Esparza-Borges, Emma
name: Esquerdo, Gilbert A.
name: Furlan, Elise
name: Gaidos, Eric
name: Gonzales, Erica J.
name: Hodapp, Klaus
name: Kusakabe, Nobuhiko
name: Kuzuhara, Masayuki
name: Lafrenière, David
name: Latham, David W.
name: Massey, Bob
name: Mori, Mayuko
name: Murgas, Felipe
name: Nishikawa, Jun
name: Nishiumi, Taku
name: Omiya, Masashi
name: Paegert, Martin
name: Palle, Enric
name: Parviainen, Hannu
name: Quinn, Samuel N.
name: Howell, Steve B.
name: Isogai, Keisuke
name: Jacobson, Shane
name: Jenkins, Jon M.
name: Jensen, Eric L. N.
name: Kawauchi, Kiyoe
name: Kotani, Takayuki
name: Kudo, Tomoyuki
name: Kurita, Seiya
name: Kurokawa, Takashi
name: Ricker, George R.
name: Schwarz, Richard P.
name: Seager, Sara
name: Tenenbaum, Peter
name: Terada, Yuka
name: Vanderspek, Roland K.
name: Watanabe, Noriharu
name: Winn, Joshua N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present observations of two bright M dwarfs (TOI-1634 and TOI-1685: $J=9.5-9.6$) hosting ultra-short period (USP) planets, identified by the TESS mission. The two stars are similar in temperature, mass, and radius ($T_\mathrm{eff}\,\approx\,3500$ K, $M_\star\,\approx\,0.45-0.46\,M_\odot$, and $R_\star\approx 0.45-0.46\,R_\odot$), and the planets are both super-Earth-sized ($1.25\,R_\oplus
description: 29 pages, 21 figures, 4 tables; AJ in press
การใช้ปุ๋ยและแนวทางการจัดการดินปลูกยางพาราในที่ลุ่มและที่ดอนในจังหวัดสงขลา
Creators: name: หทัยกานต์ นวลแก้ว
name: จักรกฤษณ์ พูนภักดี
name: จุฑามาศ แก้วมโน
name: จำเป็น อ่อนทอง
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2556
Subjects: ปุ๋ยยางพารา, การจัดการสวนยาง, ดินปลูกยางพารา, การปลูกยางพาราในที่ลุ่ม

description: 2, 8, วารสารมหาวิทยาลัยราชภัฏยะลา
สมบัติของเปลือกผลยางพาราที่เคลือบใช้เป็นมวลรวมสีเขียวและน้ำปูนข้นผสมซีโอไลต์ดัดแปร
Creators: name: ดนุพล ตันนโยภาส
name: อิสเฮาะ ยูโซะ
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2556
Subjects: สมบัติของเปลือกผลยางพารา, ซีโอไลต์ดัดแปร, อุณหภูมิของปฏิกิริยาไฮเดรชัน

description: 2, 8, วารสารมหาวิทยาลัยราชภัฏยะลา
Δασοκομική έρευνα των χαρακτηριστικών συστάδων μαύρης Πεύκης του Νομού Γρεβενών
Creators: name: Μησιάκας, Μιχαήλ Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Μαύρη Πεύκη
Δασοαποδοτικά πρότυπα
Ανάλυση δομής συστάδων
Pinus Nigra
Calculation models
Silvicultural stand analysis

description: Σκοπός της έρευνας είναι η δασοκομική ανάλυση της δομής φυσικών συστάδων μαύρης Πεύκης (Pinus nigra Arn.) στην περιοχή του Νομού Γρεβενών. Με βάση την εγκατάσταση ενός σημαντικού αριθμού δειγματοληπτικών επιφανειών στο πεδίο μετρήθηκε μια σειρά βασικών δενδρομετρικών χαρακτηριστικών (ύψος, διάμετρος κόμης, στηθιαία διάμετρος, ύψος έναρξης κόμης, ηλικία) σε επίπεδο συστάδας ώστε να διερευνηθούν στατιστικά οι σχέσεις των επιμέρους μεταβλητών και να δημιουργηθούν δασοαποδοτικά πρότυπα υπολογισμού τους. Για τις ανάγκες της έρευνας χρησιμοποιήθηκαν σύγχρονα λογισμικά ανάλυσης χώρου και στατιστικής επεξεργασίας, ενώ η ακρίβεια των εκτιμήσεων ενισχύθηκε από τον πλέον σύγχρονο εξοπλισμό. Τα αποτελέσματα της έρευνας αναμένεται να ενισχύσουν σημαντικά την αειφορική διαχείριση των συγκεκριμένων δασικών οικοσυστημάτων, προσφέροντας νέες κατευθύνσεις προς μια ολοκληρωμένη προσέγγιση πολλαπλής χρήσης, ενώ ο σημαντικός αριθμός των σχετικών ερευνών σε διεθνές, κυρίως, επίπεδο φανερώνει τη σημαντικότητα της έρευνας
description: The aim of the current study is the silvicultural analysis of the natural stands of Black Pines (Pinus nigra Arn.) at the region of Grevena. Via sampling with plots, basic tree characteristics (height, diameter, crown diameter, crown length, age) estimated for its stand, in order to investigate the statistical relation and variability between them and to create efficient calculation models. At the framework of this study, specialized software of statistical and geospatial analysis have been used. Moreover, the accuracy of measurements increased by using state of the art equipment. The results of current study is expected to enhance the sustainable management of black pine forests, offering new directions to a holistic approach of multifunctional use of this forests. As conclusion, the plenty of similar studies, international, reveals the significance of the current study
Additional file 1: of Enrichment of cancer stem cells via Î˛-catenin contributing to the tumorigenesis of hepatocellular carcinoma
Creators: name: Pandit, Harshul
name: Li, Yan
name: Li, Xuanyi
name: Zhang, Weizhong
name: Li, Suping
name: Martin, Robert
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Chemical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Supplementary experiments and routine methods. Figure S1. Spheroid formation capability of HCC cell lines. Figure S2. Î˛-catenin expression in HepG2 cell line. Figure S3. Knockdown efficiency of siRNA transfection. Routine Methods: Immunocytochemistry (ICC) Staining, Flow-Cytometry Analysis, Protein Extraction and Western Blot. Table S1. Primary antibodies (catalog info and dilution). Table S2. HRP conjugated secondary antibodies (catalog info and dilution). Table S3. Important reagents (catalog info). Table S4. Sequence details for RNA interference experiments. (DOCX 573 kb)
Negativity of the excess noise in a quantum wire capacitively coupled to a gate
Creators: name: Dolcini, F.
name: Trauzettel, B.
name: Safi, I.
name: Grabert, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electrical current noise of a quantum wire is expected to increase with increasing applied voltage. We show that this intuition can be wrong. Specifically, we consider a single channel quantum wire with impurities and with a capacitive coupling to nearby metallic gates and find that its excess noise, defined as the change in the noise caused by the finite voltage, can be negative at zero temperature. This feature is present both for large ($c \gg c_q$) and small ($c \ll c_q$) capacitive coupling, where $c$ is the geometrical and $c_q$ the quantum capacitance of the wire. In particular, for $c \gg c_q$, negativity of the excess noise can occur at finite frequency when the transmission coefficients are energy dependent, i.e. in the presence of Fabry-Pérot resonances or band curvature. In the opposite regime $c \lesssim c_q$, a non trivial voltage dependence of the noise arises even for energy independent transmission coefficients: at zero frequency the noise decreases with voltage as a power law when $c < c_q/3$, while, at finite frequency, regions of negative excess noise are present due to Andreev-type resonances.
description: 11 pages, 5 figures. Revised version, references and technical details added, typos corrected
INTERNET TARMOG`I ORQALI TUZILADIGAN TASHQI IQTISODIY BITIMLARNI TUZISH VA BAJARISH TARTIBI
Creators: name: Tursunaliyeva, Gulbahor
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada hozirgi kunda ommalashib borayotgan internet tarmog`i orqali tuziladigan iqtisodiy bitimlar tushunchasi, ularni tuzish va bajarish tartiblari to`g`risida so`z boradi. Shuningdek, elekrtron tartibda tuziladigan bitimlarda shartnoma ishtirokchisi bo`lgan tomondan chiquvchi oferta va uni qabul qilib oluvchi tomonning askepti xususida va shartnomaga kiritilishi kerak bo`lgan shartlar to`g`risidagi ma`lumotlar ham keltirib o`tiladi.
On transfer operators for C*-dynamical systems
Creators: name: Kwaśniewski, B. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 46L55, 46L30

description: The theme of the paper is the question of existence and basic structure of transfer operators for endomorphisms of a unital C*-algebra. We establish a complete description of non-degenerate transfer operators, characterize complete transfer operators and clarify their role in crossed product constructions. Also, we give necessary and sufficient conditions for existence of transfer operators for commutative systems, and discuss their form for endomorphisms of B(H) which is relevant to Kadison-Singer problem.
description: 12 pages, to appear in Rocky Mountain J. Math
The chinese struggle for literacy : villagers and the state in Guangdong, 1949-1976
Creators: name: Peterson, Glen
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation is a social and intellectual history of the struggle for literacy in Mao's China from 1949 to1976. The major objective of the dissertation is to assess the nature and significance of this struggle in one part of China: the southeastern coastal province of Guangdong. In order to achieve this objective, I pursue three central aims. First, the dissertation seeks to illuminate elite influences which shaped state literacy policy in the PRC. Since we are dealing with literacy ideologies prescribed by the state for various social groups, it is crucial to understand how those ideologies were formed and articulated. Second, the dissertation attempts to uncover popular mentalites toward literacy in order to bring into focus the tension between two educational worlds: the one that existed in the minds and in the organizational blueprints of China's state leaders, and the other that guided village educational thought and practice. In this way I show the struggle for literacy to be a process of continuous, dynamic interaction between villagers and the state. The third aim of the dissertation is to show how literacy is related to the social structure. I argue that it is insufficient and potentially misleading to assess the history of Chinese literacy in terms of statistical growth patterns alone. I demonstrate how changing literacy ideologies for different social groups played a crucial role in the formation and reproduction of social differences after 1949. In showing how the literacy map is also a map of the class structure, the dissertation involves itself with larger theoretical controversies over the role of literacy in society. In particular, this dissertation adds to a growing body of critical scholarship that challenges established, Enlightenment-derived assumptions about the relationship of literacy and societal progress.
Amalgamation of Synchronous & Asynchronous Learning Tool for Blended Pedagogy
Creators: name: Garg, HK
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390102
subject: Curriculum and pedagogy theory and development
classificationCode: 390199
subject: Curriculum and pedagogy not elsewhere classified
classificationCode: 390115
subject: Work integrated learning (incl. internships)
classificationCode: 390114
subject: Vocational education and training curriculum and pedagogy
classificationCode: 390113
subject: Science, technology and engineering curriculum and pedagogy
classificationCode: 390303
subject: Higher education
classificationCode: 390307
subject: Teacher education and professional development of educators

description: The National Education Policy is undeniably student centric, wherein the students are the key stakeholders and the system acts as a medium to cater to their dreams and aspirations. This approach allows a number of teaching-learning modalities to adopt that include face-to-face learning, online learning, and learning through distance or virtual mode. It also endorses the use of vocational courses, multidisciplinary courses and multi-modal approaches, founding a blended pedagogy. With this pedagogical approach, one can make learning processes more effective and student-friendly by integrating synchronous and asynchronous learning tools into face-to-face and online activities. Students and teachers, both can make physical presence at the same place and control the pace of learning and actual take-ways through digital devices. In the flipped classroom program, students can be encouraged to access digital learning materials, through a cloud-based learning platform, during their time offs.
พฤติกรรมของคอนกรีตมวลรวมเปลือกผลยางพาราที่เคลือบผสมซีโอไลต์ดัดแปร
Creators: name: อิสเฮาะ ยูโซะ
name: ดนุพล ตันนโยภาส
Publisher: name: มหาวิทยาลัยราชภัฏยะลา
Year: 2556
Subjects: เปลือกผลยางพารา, คอนกรีตมวลเบา, ซีโอไลต์ดัดแปร, การหดตัวแบบแห้งเชิงปริมาตร

description: 2, 8, วารสารมหาวิทยาลัยราชภัฏยะลา
The $β$ Pictoris b Hill sphere transit campaign. Paper I: Photometric limits to dust and rings
Creators: name: Kenworthy, M. A.
name: Mellon, S. N.
name: Bailey, J. I.
name: Stuik, R.
name: Dorval, P.
name: Talens, G. -J. J.
name: Crawford, S. R.
name: Mamajek, E. E.
name: Laginja, I.
name: Ireland, M.
name: Lomberg, B.
name: Kuhn, R. B.
name: Snellen, I.
name: Zwintz, K.
name: Kuschnig, R.
name: Kennedy, G. M.
name: Abe, L.
name: Agabi, A.
name: Mekarnia, D.
name: Guillot, T.
name: Schmider, F.
name: Stee, P.
name: de Pra, Y.
name: Buttu, M.
name: Crouzet, N.
name: Kalas, P.
name: Wang, J. J.
name: Stevenson, K.
name: de Mooij, E.
name: Lagrange, A. -M.
name: Lacour, S.
name: Etangs, A. Lecavelier des
name: Nowak, M.
name: Strøm, P. A.
name: Hui, Z.
name: Wang, L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Photometric monitoring of Beta Pictoris in 1981 showed anomalous fluctuations of up to 4% over several days, consistent with foreground material transiting the stellar disk. The subsequent discovery of the gas giant planet Beta Pictoris b and the predicted transit of its Hill sphere to within 0.1 au projected distance of the planet provided an opportunity to search for the transit of a circumplanetary disk in this $21\pm 4$ Myr-old planetary system. Continuous broadband photometric monitoring of Beta Pictoris requires ground-based observatories at multiple longitudes to provide redundancy and to provide triggers for rapid spectroscopic followup. These observatories include the dedicated Beta Pictoris monitoring observatory bRing at Sutherland and Siding Springs, the ASTEP400 telescope at Concordia, and observations from the space observatories BRITE and Hubble Space Telescope. We search the combined light curves for evidence of short period transient events caused by rings and for longer term photometric variability due to diffuse circumplanetary material. We find no photometric event that matches with the event seen in November 1981, and there is no systematic photometric dimming of the star as a function of the Hill sphere radius. We conclude that the 1981 event was not caused by the transit of a circumplanetary disk around Beta Pictoris b. The upper limit on the long term variability of Beta Pictoris places an upper limit of $1.8\times 10^{22}$ g of dust within the Hill sphere. Circumplanetary material is either condensed into a non-transiting disk, is condensed into a disk with moons that has a small obliquity, or is below our detection threshold. This is the first time that a dedicated international campaign has mapped the Hill sphere transit of a gas giant extrasolar planet at 10 au.
description: 12 pages, 9 figures, 1 table, accepted for publication in A&A. Reduced data and reduction scripts on GitHub at https://github.com/mkenworthy/beta_pic_b_hill_sphere_transit
Prevalence of Haplorchis taichui Infection in Snails from MaeTaeng Basin, Chiang Mai Province, by Using Morphological and Molecular Techniques
Creators: name: Thapana Chontananarth
name: Chalobol Wongsawad
Publisher: name: Yala Rajabhat University
Year: 2013
Subjects: Intestinal trematodes, Prevalence, Molecular identification, mCOI gene

description: 1, 8, Journal of Yala Rajabhat University
Additional file 2: of Blockade of ARHGAP11A reverses malignant progress via inactivating Rac1B in hepatocellular carcinoma
Creators: name: Dai, Bin
name: Zhang, Xuan
name: Shang, Runze
name: Wang, Jianlin
name: Yang, Xisheng
name: Zhang, Hong
name: Liu, Qi
name: Wang, Desheng
name: Wang, Lin
name: Dou, Kefeng
Publisher: name: figshare
Year: 2018
Subjects: Biochemistry
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Mathematical Sciences not elsewhere classified
Cancer
Virology

description: Table S2. Antibodies used for western blotting. (DOCX 16 kb)
Where was Mean Solar Time first adopted?
Creators: name: Bianchi, Simone
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: It is usually stated in the literature that Geneva was the first city to adopt mean solar time, in 1780, followed by London (or the whole of England) in 1792, Berlin in 1810 and Paris in 1816. In this short paper I will partially revise this statement, using primary references when available, and provide dates for a few other European cities. Although no exact date was found for the first public use of mean time, the primacy seems to belong to England, followed by Geneva in 1778-1779 (for horologists), Berlin in 1810, Geneva in 1821 (for public clocks), Vienna in 1823, Paris in 1826, Rome in 1847, Turin in 1849, and Milan, Bologna and Florence in 1860.
description: 5 pages. Text changed to match the published version
Low Luminosity Activity in Hickson Compact Groups
Creators: name: Martinez, M. A.
name: del Olmo, A.
name: Perea, J.
name: Coziol, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: With the aim of studying the influence of environment on the nuclear activity of galaxies, we have selected a well defined sample of 65 Compact Groups of galaxies with concordant redshift in the Hickson Catalog. In this proceeding, we present the results of the classification of nuclear activity for 42 galaxies, based on newly obtained spectral observations. In this subsample, 71% of the galaxies turned out to have emission lines in their nuclei. 73% of these emission-line galaxies were found to have characteristics consistent with low luminosity AGN (LLAGN), which makes compact groups extremely rich in such objects.
description: 5 pages with 5 figure, submitted to the proceedings of the ESO workshop "Groups of Galaxies in the Nearby Universe"
Continuum-Mediated Self-Interacting Dark Matter
Creators: name: Chaffey, Ian
name: Fichet, Sylvain
name: Tanedo, Philip
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark matter may self-interact through a continuum of low-mass states. This happens if dark matter couples to a strongly-coupled nearly-conformal hidden sector. This type of theory is holographically described by brane-localized dark matter interacting with bulk fields in a slice of 5D anti-de Sitter space. The long-range potential in this scenario depends on a non-integer power of the spatial separation, in contrast to the Yukawa potential generated by the exchange of a single 4D mediator. The resulting self-interaction cross section scales like a non-integer power of velocity. We identify the Born, classical and resonant regimes and investigate them using state-of-the-art numerical methods. We demonstrate the viability of our continuum-mediated framework to address the astrophysical small-scale structure anomalies. Investigating the continuum-mediated Sommerfeld enhancement, we demonstrate that a pattern of resonances can occur depending on the non-integer power. We conclude that continuum mediators introduce novel power-law scalings which open new possibilities for dark matter self-interaction phenomenology.
description: 31 pages + 6 appendices + references, 10 figures
Χρονικός Προγραμματισμός και Οικονομοτεχνική Μελέτη Έργου Ενεργειακού Κυματοθραύστη
Creators: name: Λαζάρου, Αναστάσιος Αστέριου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ενεργειακός
Κυματοθραύστης
Πράσινη Ενέργεια
Energy
Breakwater
Green Energy

description: Στα πλαίσια της διπλωματικής εργασίας μου για το μεταπτυχιακό πρόγραμμα: «Δίκαιο και Μηχανική της Ενέργειας» ασχολήθηκα με τον χρονικό προγραμματισμό και την οικονομοτεχνική μελέτη έργου ενεργειακού κυματοθραύστη. Ο κυματοθραύστης που μελετάται εκμεταλλεύεται τον αναρριχόμενο κυματισμό και μετατρέπει την δυναμική ενέργεια του αναρριχόμενου νερού σε ηλεκτρική μέσω της περιστροφής ρότορα και την χρήση μαγνητικής γεννήτριας. Σύμφωνα με την έρευνα που έγινε και τις εκτιμήσεις που έγιναν το συνολικό κόστος της κατασκευής εκτιμήθηκε στα 4.351.041 €, με τα ετήσια κέρδη να ανέρχονται στα 453.014,64 €. Οι φάσεις κατασκευής του έργου σύμφωνα με την έρευνα θα είναι 3, όπου στην πρώτη φάση γίνονται οι εκσκαφές και τα χωματουργικά, στην δεύτερη φάση γίνεται η θωράκιση της κατασκευής με αδρανή (φυσικά ή τεχνητά) μέγιστης διαμέτρου και στην τρίτη φάση γίνεται η εγκατάσταση του εξοπλισμού. Η συνολική διάρκεια της κατασκευής του έργου υπολογίζεται στις 182 μέρες. Εν τέλει λαμβάνοντας υπ’ όψιν όλα τα λειτουργικά έξοδα και τα περιβαλλοντικά οφέλη καταλήγουμε στο συμπέρασμα ότι η επένδυση θα αποφέρει συνολικά κέρδη 5.756.820 €.
description: In the context of my diploma thesis on the postgraduate program: "Law and Engineering of Energy", I dealt with the time planning and the economic and technical study of an energy breakwater project. The breakwater explored exploits the climbing waves and converts the dynamic energy of climbing water into electrical through the rotation of the rotor and the use of a magnetic generator. According to the survey carried out and the estimates made the total cost of construction was estimated at 4,351,041 €, with annual profits amounting to 453,014.64 €. The phases of construction of the project according to the research will be 3, where in the first phase excavations and earthworks will be carried out, the second phase will be the shielding of the construction with inert (natural or artificial) maximum diameter and in the third phase the installation of the equipment . The total duration of the construction of the project is 182 days. Finally, taking into account all operating costs and environmental benefits, we come to the conclusion that the investment will generate a total profit of 5,756,820 €.
Constrained MC for QCD evolution with rapidity ordering and minimum kT
Creators: name: Jadach, S.
name: Placzek, W.
name: Skrzypek, M.
name: Stephens, P.
name: Was, Z.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: With the imminent start of LHC experiments, development of phenomenological tools, and in particular the Monte Carlo programs and algorithms, becomes urgent. A new algorithm for the generation of a parton shower initiated by the single initial hadron beam is presented. The new algorithm is of the class of the so called ``constrained MC'' type algorithm (an alternative to the backward evolution MC algorithm), in which the energy and the type of the parton at the end of the parton shower are constrained (predefined). The complete kinematics configurations with explicitly constructed four momenta are generated and tested. Evolution time is identical with rapidity and minimum transverse momentum is used as an infrared cut-off. All terms of the leading-logarithmic approximation in the DGLAP evolution are properly accounted for. In addition, the essential improvements towards the so-called CCFM/BFKL models are also properly implemented. The resulting parton distributions are cross-checked up to the 0.1% precision level with the help of a multitude of comparisons with other MC and non-MC programs. We regard these tests as an important asset to be exploited at the time when the presented MC will enter as a building block in a larger MC program for W/Z production process at LHC.
description: Submitted to Computer Physics Communications
Mapping the Galactic centre's dark cluster via Resonant Relaxation
Creators: name: Tep, Kerwann
name: Fouvry, Jean-Baptiste
name: Pichon, Christophe
name: Heißel, Gernot
name: Paumard, Thibaut
name: Perrin, Guy
name: Vincent, Frederic
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Supermassive black holes in the centre of galaxies dominate the gravitational potential of their surrounding stellar clusters. In these dense environments, stars follow nearly Keplerian orbits, which get slowly distorted as a result of the potential fluctuations generated by the stellar cluster itself as a whole. In particular, stars undergo a rapid relaxation of their eccentricities through both resonant and non-resonant processes. An efficient implementation of the resonant diffusion coefficients allows for detailed and systematic explorations of the parameter space describing the properties of the stellar cluster. In conjunction with recent observations of the S-cluster orbiting SgrA*, this framework can be used to jointly constrain the distribution of the unresolved, old, background stellar cluster and the characteristics of a putative dark cluster. Specifically, we show how this can be used to estimate the typical mass and cuspide exponent of intermediate-mass black holes consistent with the relaxed state of the distribution of eccentricities in the observed S-cluster. This should prove useful in constraining super massive black hole formation scenarios.
description: 13 pages, 10 figures, submitted to MNRAS
Δημιουργία διαδικτυακού περιβάλλοντος διαχείρισης αρχειακών ηχογραφήσεων
Creators: name: Αξενόπουλος, Αθανάσιος Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ηχογραφήσεις
Αρχειακές
Αποθορυβοποίηση
Archive
Restoration
Preserving

description: Η παρούσα εργασία πραγματεύεται τη δημιουργία ενός διαδικτυακού περιβάλλοντος όπου θα παρέχονται υπηρεσίες διαχείρισης αρχειακού υλικού. Το συγκεκριμένο υλικό αφορά ιστορικές ηχογραφήσεις ελληνικής παραδοσιακής μουσικής οι οποίες ανήκουν σε προσωπικές ατομικές συλλογές αλλά και σε συλλογές διαφόρων πολιτιστικών φορέων. Στις υπηρεσίες που παρέχονται συγκαταλέγονται η επεξεργασία και αποκατάσταση των ηχογραφήσεων και έπειτα η δημοσίευσή τους. Στόχος είναι να δημιουργηθεί μια κοινότητα μουσικών και μουσικόφιλων στην οποία είναι όλοι ενεργά μέλη που διαμοιράζονται και διαχειρίζονται τα μουσικά τους αρχεία προάγοντας την ελληνική μουσική παράδοση.
description: The purpose of this project is primarily the creation of a web interface where services of file material administration are provided. This particular material concerns historic recordings of Greek traditional music, which they belong to personal collections and collections of cultural organizations. Among with the provided services there are also the recording processing and restoration and finally their publication. The aim is to create a community of people who occupy with music as a profession or as a hobby and who wish to share and handle their music archive fostering the Greek musical tradition.
description: Σε συνεργασία με: Λογιστικής και Χρηματοοικονομικής (Πανεπιστήμιο Μακεδονίας)
Copolymers at selective interfaces: new bounds on the phase diagram
Creators: name: Bodineau, T.
name: Giacomin, G.
name: Lacoin, H.
name: Toninelli, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35; 82B44; 60K37

description: We investigate the phase diagram of disordered copolymers at the interface between two selective solvents, and in particular its weak-coupling behavior, encoded in the slope $m_c$ of the critical line at the origin. In mathematical terms, the partition function of such a model does not depend on all the details of the Markov chain that models the polymer, but only on the time elapsed between successive returns to zero and on whether the walk is in the upper or lower half plane between such returns. This observation leads to a natural generalization of the model, in terms of arbitrary laws of return times: the most interesting case being the one of return times with power law tails (with exponent 1+alpha, alpha=1/2 in the case of the symmetric random walk). The main results we present here are: 1. The improvement of the known result 1/(1+alpha) smaller or equal to m_c smaller or equal to 1, as soon as alpha >1 for what concerns the upper bound, and down to alpha = 0.65 for the lower bound. 2. A proof of the fact that the critical curve lies strictly below the critical curve of the annealed model for every non-zero value of the coupling parameter. We also provide an argument that rigorously shows the strong dependence of the phase diagram on the details of the return probability (and not only on the tail behavior). Lower bounds are obtained by exhibiting a new localization strategy, while upper bounds are based on estimates of non-integer moments of the partition function.
description: A few minor changes through the text, statement of Th. 2.9 slightly improved. To appear on J. Statist. Phys.
Exact propagators for atom-laser interactions
Creators: name: del Campo, A.
name: Muga, J. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A class of exact propagators describing the interaction of an $N$-level atom with a set of on-resonance $δ$-lasers is obtained by means of the Laplace transform method. State-selective mirrors are described in the limit of strong lasers. The ladder, V and $Λ$ configurations for a three-level atom are discussed. For the two level case, the transient effects arising as result of the interaction between both a semi-infinite beam and a wavepacket with the on-resonance laser are examined.
description: 13 pages, 6 figures
Interaction-Induced Resonance in Conductance and Thermopower of Quantum Wires
Creators: name: Lunde, Anders Mathias
name: Flensberg, Karsten
name: Glazman, Leonid I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effect of electron-electron interaction on the transport properties of short clean quantum wires adiabatically connected to reservoirs. Interactions lead to resonances in a multi-channel wire at particular values of the Fermi energy. We investigate in detail the resonance in a two-channel wire. The (negative) conductance correction peaks at the resonance, and decays exponentially as the Fermi energy is tuned away; the resonance width being given by the temperature. Likewise, the thermopower shows a characteristic structure, which is surprisingly well approximated by the so-called Mott formula. Finally, four-fold splitting of the resonance in a magnetic field provides a unique signature of the effect.
description: 4 pages, 4 figures
The Kinematics of z ~ 6 Quasar Host Galaxies
Creators: name: Neeleman, Marcel
name: Novak, Mladen
name: Venemans, Bram P.
name: Walter, Fabian
name: Decarli, Roberto
name: Kaasinen, Melanie
name: Schindler, Jan-Torge
name: Banados, Eduardo
name: Carilli, Chris L.
name: Drake, Alyssa B.
name: Fan, Xiaohui
name: Rix, Hans-Walter
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore the kinematics of 27 z~6 quasar host galaxies observed in [CII]-158 micron ([CII]) emission with the Atacama Large Millimeter/sub-millimeter Array at a resolution of ~0.25''. We find that nine of the galaxies show disturbed [CII] emission, either due to a close companion galaxy or recent merger. Ten galaxies have smooth velocity gradients consistent with the emission arising from a gaseous disk. The remaining eight quasar host galaxies show no velocity gradient, suggesting that the gas in these systems is dispersion-dominated. All galaxies show high velocity dispersions with a mean of 129+-10 km/s. To provide an estimate of the dynamical mass within twice the half-light radius of the quasar host galaxy, we model the kinematics of the [CII] emission line using our publicly available kinematic fitting code, qubefit. This results in a mean dynamical mass of 5.0+-0.8(+-3.5) x 10^10 Msun. Comparison between the dynamical mass and the mass of the supermassive black hole reveals that the sample falls above the locally derived bulge mass--black hole mass relation at 2.4sigma significance. This result is robust even if we account for the large systematic uncertainties. Using several different estimators for the molecular mass, we estimate a gas mass fraction of >10%, indicating gas makes up a large fraction of the baryonic mass of z~6 quasar host galaxies. Finally, we speculate that the large variety in [CII] kinematics is an indication that gas accretion onto z~6 super massive black holes is not caused by a single precipitating factor.
description: 33 pages. Kinematic fitting code is available at https://github.com/mneeleman/qubefit
Πολιτιστική κληρονομιά, ευρωπαϊκή ταυτότητα, νέες τεχνολογίες: ανιχνεύοντας τις πολλαπλές διαστάσεις της πλατείας Κοτζιά μέσα από το project CoHere. ( Cultural heritage, European identity, new technologies: detecting the multiple dimensions of Kotzia square through the CoHere project.)
Creators: name: Kassaveti Orsalia-Eleni
name: Lia, Galani
name: Kakaboura Rea
Publisher: name: Zenodo
Year: 2017
Subjects: Kotzia square, visual rhetoric, geostream

description: The purpose of this paper is to present the theoretical framework, the methodology and the ongoing work of the Greek research CoHere Group, which focuses on the study of Kotzia Square in Athens. Focused on Square as a public space, CoHere attempts to record and analyze on-line and off-line "dialogues" that arise in a digital environment and relate to common practices in the use of photographs and the analysis of the relationship between cultural heritage and identity.
description: Proceeding of the conference Euromed 2017, σσ. 554-561. The paper was presented in the 2nd Panhellenic Conference on Cultural Heritage Digitization - 2017
Instantaneous processing of "slow light": amplitude-duration control, storage, and splitting
Creators: name: Shakhmuratov, R. N.
name: Kalachev, A. A.
name: Odeurs, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nonadiabatic change of the control field or of the low-frequency coherence allows for an almost instantaneous change of the signal field propagating in a thick resonant absorber where electromagnetically induced transparency is realized. This finding is applied for the storage and retrieval of the signal, for the creation of a signal copy and separation of this copy from the original pulse without its destruction.
description: 9 pages, 1 figure, submitted to PRL on 18, December, 2006
The Stabilized Poincare-Heisenberg algebra: a Clifford algebra viewpoint
Creators: name: Gresnigt, N. G.
name: Renaud, P. F.
name: Butler, P. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The stabilized Poincare-Heisenberg algebra (SPHA) is the Lie algebra of quantum relativistic kinematics generated by fifteen generators. It is obtained from imposing stability conditions after attempting to combine the Lie algebras of quantum mechanics and relativity which by themselves are stable, however not when combined. In this paper we show how the sixteen dimensional Clifford algebra CL(1,3) can be used to generate the SPHA. The Clifford algebra path to the SPHA avoids the traditional stability considerations, relying instead on the fact that CL(1,3) is a semi-simple algebra and therefore stable. It is therefore conceptually easier and more straightforward to work with a Clifford algebra. The Clifford algebra path suggests the next evolutionary step toward a theory of physics at the interface of GR and QM might be to depart from working in space-time and instead to work in space-time-momentum.
description: 14 pages
Thermodynamic and vortic fine structures of real Schur flows
Creators: name: Zhu, Jian-Zhou
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: A two-component-two-dimensional coupled with one-component-three-dimensional (2C2Dcw1C3D) flow may also be called a real Schur flow (RSF), as its velocity gradient is uniformly of real Schur form, the latter being the intrinsic local property of any general flows. The thermodynamic and `vortic' fine structures of RSF are exposed and, in particular, the complete set of equations governing a (viscous and/or driven) 2C2Dcw1C3D flow are derived. The Lie invariances of the decomposed vorticity 2-forms of RSFs in $d$-dimensional Euclidean space $\mathbb{E}^d$ for any interger $d\ge 3$ are also proven, and many Lie-invariant fine results, such as those of the combinations of the entropic and vortic quantities, including the invariances of the decomposed Ertel potential vorticity (and their multiplications by any interger powers of entropy) 3-forms, then follow.
Σχεδιασμός μονοπατιών γεωργικών οχημάτων
Creators: name: Κατικαρίδης, Δημήτριος Χρυσοστόμου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ρομποτική
Σχεδιασμός μονοπατιού
Γεωργία
Robotics
Path planning
Agriculture

description: Αγροτικές εργασίες, όπως ο ψεκασμός, η συγκομιδή και η σπορά, αποτελούν εν δυνάμει εργασίες που μπορούν να αυτοματοποιηθούν και να εκτελεστούν είτε μέσω αυτοματοποιημένης υποβοήθησης, είτε εξ ολοκλήρου από αυτόνομα γεωργικά οχήματα. Στη συγκεκριμένη εργασία αναπτύχθηκε αλγοριθμική προσέγγιση με στόχο την επίλυση ενός, εκ των πολλών, προβλημάτων που συναντώνται στην αυτοματοποίηση των εργασιών στον αγρό. Το συγκεκριμένο πρόβλημα αφορά στην πλοήγηση οχημάτων στο ημι-δομημένο περιβάλλον οπωρώνων. Το λογισμικό που αναπτύχθηκε δέχεται ως είσοδο προ-επεξεργασμένα δεδομένα γεωδεμένης αποτύπωσης του αγρού των οποίων η συλλογή πραγματοποιείται από ένα μη-επανδρωμένο εναέριο όχημα. Με βάση τα δεδομένα αυτά, το λογισμικό δημιουργεί τον τοπολογικό χάρτη του αγρού σε σχέση με τις προσβάσιμες διαδρομές, στον οποίο χάρτη, στη συνέχεια εφαρμόζεται αλγόριθμος επίλυσης γράφου ο οποίος παράγει την αρχική τοπολογική λύση του προβλήματος εύρεσης μονοπατιού. Έπειτα, η λύση αυτή μεταφράζεται ως μία σειριακή αλληλουχία συντεταγμένων που ορίζει το παραγόμενο βέλτιστο μονοπάτι
description: Agricultural field operations, such as spraying, harvesting and seeding, can potentially be automated and executed either by conventional machinery equipped with automation systems, or by autonomous machines. An automated operation must be planned and organised in a manner that, on one hand reduces risk and failure potential and, on the other hand, optimises productivity and efficiency. In the context of this Thesis an algorithmic approach was developed aiming at solving one of the various problems encountered in the autonomous agricultural operations. Specifically, the problem addressed is the navigation in the semi-structured environment of orchards. The developed software receives as input pre-processed data, a geotagged depiction of an orchard farm, which is obtained by an unmanned aerial vehicle. The pre-processing formats the coordinates which define the field's tracks. Based on this data, the software creates a grid-based map related to the accessible areas, utilized by a graph-based algorithm that produces the topological path planning solution. Subsequently, the solution is translated as a sequence of coordinates which define the produced optimal path
3D Printed Metallic Dual-Polarized Vivaldi Arrays on Square and Triangular Lattices
Creators: name: Pfeiffer, Carl
name: Massman, Jeffrey
name: Steffen, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: We report the first Vivaldi arrays monolithically fabricated exclusively using commercial, low-cost, 3D metal printing (direct metal laser sintering). Furthermore, we developed one of the first dual-polarized Vivaldi arrays on a triangular lattice, and compare it to a square lattice array. The triangular lattice is attractive because it has a 15.5% larger cell size compared to the square lattice and can be more naturally truncated into a wide range of aperture shapes such as a rectangle, hexagon, or triangle. Both arrays operate at 3-20 GHz and scan angles out to 60 degree from normal. The fabrication process is significantly simplified compared to previously published Vivaldi arrays since the antenna is ready for use directly after the standard printing process is complete. This rapid manufacturing is further expedited by printing the 'Sub-Miniature Push-on, Micro' (SMPM) connectors directly onto the radiating elements, which simplifies assembly and reduces cost compared to utilizing discrete RF connectors. The arrays have a modular design that allow for combining multiple sub-arrays together for arbitrarily increasing the aperture size. Simulations and measurement show that our arrays have similar performance as previously published Vivaldi arrays, but with simpler fabrication.
description: IEEE Transactions on Antennas and Propagation
Characterization of genes of the elongation factor 2 (EF-2) family of caenorhabditis elegans
Creators: name: Ofulue, Esther Ngozi
Publisher: name: University of British Columbia
Year: 2009

description: A gene eft- 1 encoding a protein synthesis elongation factor 2-like protein was isolated from chromosome III of C. elegans, and was mapped approximately 50 kb downstream from ubq-l. Five overlapping cosmids spanning 150 kb in this region were mapped by restriction endonuclease digestion, and hybridized to cDNA probes made from embryo polyA+RNA. One positive fragment B3255 was analyzed by sequencing, and was also used as a specific probe to isolate a eDNA clone pEF1.35 encoding eft-1 mRNA. The entire eft-l gene of 3.8 kb predicted a protein (EFT-l) of 849 amino acid residues which shared 38% overall identity with mammalian and Drosophila elongation factor 2 (EF-2) sequences. Sequence segments implicated in GTP-binding and GTPase activity in EF-2 were found in the N-terminal region, while segments characteristic of EF-2 and its prokaryotic counterpart EF-G were found at the coffesponding C-terminal portion of EFT-1; the latter region shared 40 - 50% similarity with, the hamster EF-2. However, the histidyl residue target for ADP-ribosylation and inactivation of EF-2 by diphtheria toxin, which is thought to be of functional importance in EF-2, was replaced by a tyrosyl residue in EFT- 1. By rapid amplification of C elegans DNA sequences using primers specific for highly conserved regions of mammalian and Drosophila EF-2 using the polymerase chain reaction, cDNA and genomic clones containing a C. elegans gene (eft-2) were isolated and characterized. One cDNA clone, pCef6A, encoding the entire eft-2 mRNA predicted a polypeptide of 852 amino acid residues which shared greater than 80% identity with the hamster and Drosophila EF-2 sequences. The GTP-binding domains, ADP-modifiable histidyl residue, and high homology regions shared between EF-2 and EF-G were 80 - 100% conserved in the C elegans protein. These results suggested that eft-2 and not eft-1 encoded the C elegans homolog of EF-2. The conservation of functional domains of EF-2 in EFT- 1 implied that the two genes were derived at least in part from a common ancestor. The copy numbers of eft- 1 and eft-2 were examined and their expression was monitored throughout nematode development. The results revealed that both genes are unique and each encodes a 3 kilobase mRNA species which does not appear to be under nutritional or developmental regulation.