cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Εφαρμογή της ανάλυσης Swot στο συνεταιριστικό οινοποιείο ΑΜΥΝΤΑΣ στην περιοχή Αμύνταιου Φλώρινας
Creators: name: Ταβελάρης, Γεώργιος Στεργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Συνεταιριστικό οινοποιείο
Ανάλυση Swot
Πωλήσεις οίνου
Wine market
Wine industry
Swot analysis
Sales, competitive enterprise
Bottled wine

description: Η οινική αγορά την τελευταία δεκαετία παρουσιάζεται ανταγωνιστική ιδιαίτερα στην εμπορία του οίνου από συνεταιριστικές γεωργικές επιχειρήσεις. Στο παράδειγμα του συνεταιριστικού οινοποιείου Αμύντας παρατηρείται από την εφαρμογή της ανάλυσης Swot η ύπαρξη εμπορικού περιθωρίου κέρδους επί των πωλήσεων κυρίως ερυθρού ποιοτικού οίνου στο εξωτερικό με δυνατότητα μεγιστοποίησης του ύψους των πωλήσεων μελλοντικά από τις εξαγωγές οίνου
description: As the wine market is competive, due to the wine is trade from agricultural cooperative enterprises, the wine industry of Amyntas is shown that it develops market profit from the growth of sales especially of the sales of red quality wines abroad.The extra profit of wine trade show that the sales of wine abroad could be increased over to 337.000 euro and the sale of wine in Greece could be increased too. This is confirmed also from the analysis Swot, where factors of it are qualitated and is represented the position of the cooperative wine industry at the wine market
Γυναίκες σε διευθυντικές θέσεις στη Β'θμια εκπαίδευση: μία φεμινιστική θεωρητική και εμπειρική προσέγγιση
Creators: name: Αντωνοπούλου, Ζωή-Μαρίνα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γυναίκες-φύλο
ηγεσία
Εκπαιδευτική διοίκηση
Επαγγελματισμός
Υποαντιπροσώπευση
Δημόσια-ιδιωτική σφαίρα
Women-gender
Leadership
Educational administation
Professionalism
Underepresentation
Public-private sphere

description: Η εργασία αυτή έχει σκοπό να διερευνήσει τον τρόπο που οι γυναίκες διευθύντριες σε Β'θμια σχολεία αντιλαμβάνονται και κάνουν πράξη τους όρους ηγεσία, εκπαιδευτική δικοίκηση, επάγγελμα, καριέρα. Ταυτόχρονα διερευνά την παρουσία των γυναικών στη διοίκηση της β'θμιας εκπαίδευσης και επιχειρεί να εντοπίσει τα αίτια υπονατιπροσώπευσής τους σε διευθυντικές θέσεις. Η ερευνητική προσέγγιση είναι φεμινιστική και το ερευνητικό εργαλείο που χρησιμοποιήθηκε είναι η ημιδομημένη συνέντευξη. Στόχος της έρευνας είναι η ανάδειξη των φωνών των γυναικών διευθυντριών έτσι ώστε να αποτελέσουν μοντέλα ρόλων, να περιγραφεί το διοικητικό τους στυλ και να καταγραφεί ο τρόπος που οι γυναίκες αυτές προσπαθούν να συνδυάσουν την προσωπική με την επαγγελματική τους ζωή. Η μέθοδος που χρησιμοποιήθηκε για την ανάλυση των 15 συνεντεύξεων είναι η ποιοτική ανάλυση περιεχομένου
description: The aim of this research is to investigate the way women head teachers in secondary education perceive and accomplish terms like leadership, educational administration, profession, career. At the same time, it investigates the presence of women in the administration of secondary education and attempts to locate the causes of underepresantation of women. The research approach is feministic and the research tool that is used is the semi-constructive interview. The goal of this research is the proof of the voices of the headmistresses in such a way as to constitute role-models, to describe their administrative style and to write down the way these women try to combine their personal and professional life.The method used for the analysis of the 15 interviews is the qualitative content analysis
Identification of salmon can-filling defects using machine vision
Creators: name: O’Dor, Matthew Arnold
Publisher: name: University of British Columbia
Year: 2009

description: During the salmon can-filling process, a number of can-filling defects can result from the incorrect insertion of the salmon meat into the cans. These can-filling defects must be repaired before sealing the cans. Thus, in the existing industrial process, every can is manually inspected to identify the defective cans. This thesis details a research project on the use of machine vision for the inspection of filled cans of salmon. The types of can-filling defects were identified and defined through consultations with salmon canning quality assurance experts. Images of can-filling defects were acquired at a production facility. These images were examined and feature extraction algorithms were developed to extract the features necessary for the identification of two types of can-filling defects. Radial basis function networks and fuzzy logic methods for classifying the extracted features were developed. These classification methods are evaluated and compared. A research prototype was designed and constructed to evaluate the machine vision algorithms on-line.
Hadron structure at small momentum transfer
Creators: name: Walcher, Thomas
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Giving three examples, the form factors of the nucleon, the polarisability of the charged pion and the interference of the $S_{11}(1535)$ with the $D_{13}(1520)$ excitation of the nucleon in the $ηp$-decay channel, it is argued that the hadron structure at low momentum transfer is highly significant for studying QCD.
description: 7 pages, 9 figures. Contribution to the International School of Nuclear Physics, 29th Ccourse, "Quarks in Hadrons and Nuclei", Erice, Sicily, 16 - 24 September 2007
A vacuum tracking method for oscillating stars
Creators: name: Τσακίρης, Νίκος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Υπολογιστική υδροδυναμική
Κρουστικά κύματα
Μαγνητοϋδροδυναμική
Υπολογιστική Αστροφυσική
Περιστρεφόμενοι αστέρες
Υπολογιστική Φυσική
Computational fluid dynamics
Shock waves
Magnetohydrodynamics (MHD)
Computational astrophysics
Rotating stars
Computational physics

description: Κύριος σκοπός της εργασίας είναι να παρουσιάσει αποτελέσματα που αφορούν μια μέθοδο για τον εντοπισμό του ορίου κενού-ύλης και η οποία μπορεί να αποδειχτεί ιδιαίτερα χρήσιμη όταν μελετώνται στατικά και περιστρεφόμενα αστέρια.
description: The main purpose of this master thesis is to present results concerning a new method for tracking the vacuum boundary and which can be extremenly helpful when static and rotating stars are studied. The vacuum boundary tracking method is combined with a high-order reconstruction algorithm, such as PPM. It can be introduced in a numerical code and in the present thesis it way used to simulate static and rotating stars in newtonian gravity, which were surrounded by a vaccum regin. Up to now, most of the simulations assumed the existence of an artificial atmosphere around the stars which were dynamically evolved. The results of the simulations using the vacuum boundary tracking algorithm appear promising
Tree Automata Make Ordinal Theory Easy
Creators: name: Cachat, Thierry
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: We give a new simple proof of the decidability of the First Order Theory of (omega^omega^i,+) and the Monadic Second Order Theory of (omega^i,
title: Cost Effective Maintenance Contracting
title: A Literature Review
titleType: Subtitle
Creators: name: Meade, Bobby W.
name: Hunsucker, David Q.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1991
Subjects: subject: Transportation Engineering

description: Faced with ever increasing maintenance needs and constrained resources for meeting those needs, government agencies are searching for the most cost effective means of conducting highway maintenance. One alternative being used is contracting highway maintenance to private agencies. This report includes the findings of a literature search of articles pertaining to contract maintenance.  Review of the articles acquired in the literature search indicates that contract maintenance is increasing in usage and is a cost effective alternative.
Evaluation of Modified Asphalt Mixtures
Creators: name: Mahboub, Kamyar C.
name: Simpson, Amy
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1991
Subjects: subject: Transportation Engineering

description: The primary objective of this study was to conduct a comparative analysis on various modified asphalt mixture systems in order to determine their suitability for conditions that are commonly encountered in Kentucky.  Several modified asphalt mixture systems were selected for laboratory and field testing (one-mile long field test section on KY 80, Pulaski County). These systems included the following asphalt mixtures: Control, Vestoplast, Polypropylene Fiber, Gilsonite, PMAC #1, Polyester Fiber, and PMAC #2. Laboratory testing included: Marshall stability and flow, mixture air voids and density, indirect tensile strength, moisture damage susceptibility, freeze-thaw damage susceptibility, resilient modulus, and repeated load permanent deformation. Statistically based comparative analyses were conducted in order to determine any significant relative differences in the performance potential of different modified systems. All statistical analyses were conducted at 90% level of significance (i.e., alpha error rate = 10%).
Pairs of Giant Shock Waves (N-Waves) in Merging Galaxy Clusters
Creators: name: Zhang, Congyao
name: Churazov, Eugene
name: Zhuravleva, Irina
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: When a subcluster merges with a larger galaxy cluster, a bow shock is driven ahead of the subcluster. At a later merger stage, this bow shock separates from the subcluster, becoming a "runaway" shock that propagates down the steep density gradient through the cluster outskirts and approximately maintains its strength and the Mach number. Such shocks are plausible candidates for producing radio relics in the periphery of clusters. We argue that, during the same merger stage, a secondary shock is formed much closer to the main cluster center. A close analog of this structure is known in the usual hydrodynamics as N-waves, where the trailing part of the "N" is the result of the non-linear evolution of a shock. In merging clusters, spherical geometry and stratification could further promote its development. Both the primary and the secondary shocks are the natural outcome of a single merger event and often both components of the pair should be present. However, in the radio band, the leading shock could be more prominent, while the trailing shock might conversely be more easily seen in X-rays. The latter argument implies that for some of the (trailing) shocks found in X-ray data, it might be difficult to identify their "partner" leading shocks or the merging subclusters, which are farther away from the cluster center. We argue that the Coma cluster and A2744 could be two examples in a post-merger state with such well-separated shock pairs.
description: 9 pages, 8 figures, submitted to MNRAS. Comments are welcome
Ανάλυση ατελειών δομής σε ημιαγωγούς νιτριδίων
Creators: name: Καλεσάκη, Ευτέρπη Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Νιτρίδια
Ενεργειακό χάσμα
Διεπιφάνειες
Βουρτσίτης
Σφαλερίτης
Nitrides
Band gap
Interfaces
Wurtzite
Sphlaretie
Abinitio

description: Οι ΙΙΙ-V ημιαγωγικές ενώσεις συνιστούν ένα σημαντικό τμήμα του τομέα τεχνολογίας και έρευνας καθώς βρίσκουν πλήθος εφαρμογών κυρίως στον τομέα της οπτοηλεκτρονικής. Στην παρούσα εργασία υπολογίσαμε το ενεργειακό χάσμα των Gan, Aln, ImN αλλά και αυτό ενός slab από Gan, η επιφάνεια του οποίου έχει αδρανοποιηθεί με "ψευδουδρογόνα". Οι υπολογισμοί έγιναν στο πλαίσιο της Density Functional Theory χρησιμοποιώντας τη μέθοδο ψευδοδυναμικών επιπέδων σώματος. Στο δεύτερο στάδιο της μελέτης μας δημιουργήσαμε τις διεπιφάνειες APN/GaN και InN/GaN εξετάζοντας και τις δύο πιθανές πολικότητες. Κατά το σχηματισμό αυτό παρατηρήσαμε ότι μπορεί να προκύψουν δύο τύποι διεπιφανειών: σφαλεριτικής και βουρτσιτικής δομής. Μελετήσαμε και τις δύο περιπτώσεις κατασκευάζοντας στρώματα πάχους 2,7 nm GaN, 5,8 nm InN για τις InN/GaN διεπιφάνειες ώστε να λάβουμε υπόψη την ύπαρξη εξάρμοσης προσαρμογής μεταξύ των δύο δομών λόγω της διαφοράς των πλεγματικών σταθερών τους.
description: We performed density functional calculations of the band structure of Gan, AlN and InN using the pseudopotential plane wave method and the SFHIngX code. The calculated bandgaps are underestimated as expected since we choose the GGA approximation. Our next step was to study how the passivation of a GaN-slab with pseudobydrogens affects its band gap.The resulting raise of the energy bandgap is not remarkable. In the last part of this thesis we constructed the interfaces of APN/GaN and InN/GaN, taking into consideration both III and V polarities, which exhibit many interesting features such as the possibility of the interface to be grown either on sphalerite or wurttite units. For the relaxation of the strain we considered the existence of a misfit dislocation in our structures.
19B isotope as a 17B-n-n three-body cluster close to unitary limit
Creators: name: Carbonell, J.
name: Hiyama, E.
name: Lazauskas, R.
name: Marqués, F. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We describe 19B in terms of a 17B-n-n three-body system, where the two-body subsystems 17B-n and n-n are unbound (virtual) states close to the unitary limit. The energy of 19B ground state is well reproduced and two low-lying resonances are predicted. Their eventual link with the Efimov physics is discussed. This model can be extended to describe the recently discovered resonant states in 20,21B.
description: 27th International Nuclear Physics Conference (INPC2019). arXiv admin note: substantial text overlap with arXiv:1912.05427
Κοινωνική τάξη και γλωσσική διαφοροποίηση ως παράμετροι της σχολικής επίδοσης: μια διερεύνηση της ελληνικής πραγματικότητας
Creators: name: Χρυσάφη, Βαρβάρα Χρυσάφη
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γλωσσική κατάρτιση-κοινωνικοοικονομική προέλευση-σχολική επιτυχία
Σχολική αποτυχία
Linguistic competence-socialeconomic background-school success
School failure

description: Οι θεωρητικές ερμηνείες του φαινομένου των άνισων σχολικών επιδόσεων έδωσαν το έναυσμα για τη διεξαγωγή μιας μικρής έρευνας σε έξι γυμνάσια της Θεσ/νικης με σκοπό να διαπιστωθεί αν η γλωσσική κατάρτιση των μαθητών μπορεί να συσχετιστεί με : α. το φύλο β. το κοινωνικοοικονικό επίπεδο των γονέων και γ. τη σχολική επιτυχία καθώς και να καταγραφούν οι εκτιμήσεις των φιλολόγων σχετικά με τη βελτίωση του μαθήματος και της επίδοσης των μαθητών.Οπως προκύπτει από τη στατιστική επεξεργασία των δεδομένων, παρατηρείται στατιστικά σημαντική διαφορά στην επίδοση στα γλωσσικά τεστ μεταξύ αγοριών και κοριτσιών. Η συνολική βαθμολογία των μαθητών από τα χαμηλότερα κοινωνικά στρώματα εμφανίζεται μικρότερη σε σχέση με εκείνη των παιδιών από τα άλλα κοινωνικά στρώματα (μεσαίο, ανώτερο). Η επίδοση των μαθητών στα γλωσσικά τεστ είναι αντίστοιχη της σχολικής τους επίδοσης συνεπώς σχετίζεται άμεση με τη σχολική επιτυχία πόπως αυτή εκφράζεται από τη συνολική σχολική επίδοση στα μαθήματα. Επηρεάζεται δε κυρίως από την επαγγελματική θέση της μητέρας. Τέλος, ιδιαίτερη βαρύτητα δίνεται από τους φιλολόγους στην αναθεώρηση του σχολικού εγχειριδίου στην αύξηση των ωρών διδασκαλίας στην επιμόρφωσή τους και στη θετική στάση απέναντι στις γλωσσικές ιδιαιτερότητες των μαθητών
description: The theoretical explanations of unequal school performances inspired a small research conducted in six High Schools of Thessaloniki in order to find out whether the linguistic competence of the students can be related to six, the socialeconomic status of the parents and the school success. We also present the greek language teacher's proposals concerning ways of improving the students performance. Statistical difference was found between boys and girls in their linguistic tests performance. The marks of students of the higher social classes at the linguistic tests were better compared to those of the students of the lower classes. The students performance at the linguistic tests is equivalent to their school performance so it is directly related to their school success as its is proven by their school records. It is mainly influenced by the mother's professional status. Finally, teachers lay stress on the revision of the school book, the increase of the teaching hours in the school schedule and the positive attitude towards the linguistic differences
A Superspace Dirac Operator in NCG and the "factorization" of the Ordinary Dirac Operator
Creators: name: Ciurla, Dominik
name: Hadasz, Leszek
name: Williams, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review a procedure of factorizing the Minkowski space Dirac operator over a~suitable superspace, discuss its Euclidean space version and apply the worked out formalism in the case od an almost-commutative Dirac operator. The presented framework is an attempt to reconcile non-commutative geometry and supersymmetry.
description: 11 pages, no figures
Druggability and Amino Acid Variability of the Catalytic Site of SARS-CoV-2 Nsp15 Across Coronaviruses and SARS-CoV-2 Samples
Creators: name: Yazdani, Setayesh
name: Maio, Nicola De
name: Schapira, Matthieu
Publisher: name: Zenodo
Year: 2021

description: This report contains the druggability and amino acid variability analysis of the catalytic pocket of nsp15 across coronaviruses and SARS-CoV-2 samples. This report accompanies this post on OpenLabNotebooks.org.
Extension of the Huttner-Barnett model to a magnetodielectric medium
Creators: name: Kheirandish, Fardin
name: Soltani, Morteza
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Huttner$-$Barnett model is extended to a magnetodielectric medium by adding a new matter field to this model. The eigenoperators for the coupled system are calculated and electromagnetic field is written in terms of these operators. The electric and magnetic susceptibility of the medium are explicitly derived and shown to satisfy the Kramers$-$Kronig relations. It is shown that the results obtained in this model are equivalent to the results obtained from the phenomenological methods.
description: 25 pages
Physics guided machine learning using simplified theories
Creators: name: Pawar, Suraj
name: San, Omer
name: Aksoylu, Burak
name: Rasheed, Adil
name: Kvamsdal, Trond
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Recent applications of machine learning, in particular deep learning, motivate the need to address the generalizability of the statistical inference approaches in physical sciences. In this letter, we introduce a modular physics guided machine learning framework to improve the accuracy of such data-driven predictive engines. The chief idea in our approach is to augment the knowledge of the simplified theories with the underlying learning process. To emphasise on their physical importance, our architecture consists of adding certain features at intermediate layers rather than in the input layer. To demonstrate our approach, we select a canonical airfoil aerodynamic problem with the enhancement of the potential flow theory. We include features obtained by a panel method that can be computed efficiently for an unseen configuration in our training procedure. By addressing the generalizability concerns, our results suggest that the proposed feature enhancement approach can be effectively used in many scientific machine learning applications, especially for the systems where we can use a theoretical, empirical, or simplified model to guide the learning module.
Engineering Estimates and FHWA Accuracy Criterion
Creators: name: Hunsucker, David Q.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1991
Subjects: subject: Transportation Engineering

description: The Federal Highway Administration requires the construction cost estimate of the highway engineer to be a projection of the low bid, and be within +/- 10 percent of the low bid for at least 50 percent of the projects awarded. Construction cost estimates developed by the Estimating Staff of the Kentucky Department of Highways have not always met this criterion in years past.  The Estimating Staff of the Kentucky Department of Highways use an actual cost approach to generate construction cost estimates. It was concluded that the Department's estimating staff possess the ability to do very thorough and accurate work. The Estimating Staff produce a construction cost estimate for a project that is considered to be a reasonable and equitable price for an average contractor to complete the proposed work in an approved manner. The Kentucky Department of Highways considers the engineer's estimate to be a fair price for the project. The percent o!the engineer's estimates within +/- 10 percent of the low bid improved during the period reviewed. Proper assessment of the affect of competition on the bids for bituminous projects would virtually guarantee compliance with FHWA's accuracy standard.  Advantages and disadvantages of determining a fair price tor a construction project versus predicting the low bid were examined.
On the binary orbit of Henry Draper one (HD 1)
Creators: name: Strassmeier, Klaus G.
name: Weber, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present our final orbit for the late-type spectroscopic binary HD 1. Employed are 553 spectra from 13 years of observations with our robotic STELLA facility and its high-resolution echelle spectrograph SES. Its long-term radial-velocity stability is $\approx$50m/s . A single radial velocity of HD 1 reached a rms residual of 63m/s, close to the expected precision. Spectral lines of HD 1 are rotationally broadened with $v\sin i$ of 9.1$\pm$0.1 km/s . The overall spectrum appears single-lined and yielded an orbit with an eccentricity of 0.5056$\pm$0.0005 and a semi-amplitude of 4.44km/s . We constrain and refine the orbital period based on the SES data alone to 2318.70$\pm$0.32d, compared to 2317.8$\pm$1.1d when including the older data set published by DAO and Cambridge/Coravel. Owing to the higher precision of the SES data, we base the orbit calculation only on the STELLA/SES velocities in order not to degrade its solution. We redetermine astrophysical parameters for HD 1 from spectrum synthesis and, together with the new {\it Gaia} DR-2 parallax, suggest a higher luminosity than published previously. We conclude that HD 1 is a slightly metal-deficient K0 III-II giant 217 times more luminous than the Sun. The secondary remains invisible at optical wavelengths. We present evidence for the existence of a third component.
Η διαχείριση της καλλιέργειας βιομηχανικής τομάτας στα πλαίσια της συμβολαιικής γεωργίας
Creators: name: Αμβροσιάδου, Σοφία Λαζάρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Βιομηχανική τομάτα
Συμβολαιική γεωργία
Συμβόλαιο
Μονάδες μεταποίησης βιομηχανικής τομάτας
Διαχείριση
Processing tomato
Contract farming
Tomato-processing industry
Management

description: Η παραγωγή αγροτικών προϊόντων στα πλαίσια της συμβολαιικής γεωργίας υφίσταται εδώ και πολλά χρόνια.Η παρούσα εργασία χρησιμοποιεί εκτεταμένα στοχεία που προέρχονται αφενος από γεωργικές εκμεταλλεύσεις βιομηχανικής τομάτας και αφετέρου από μονάδες μεταποίησης βιομηχανικής τομάτας στην Ελλάδα, στοχεύοντας στη διερεύνηση της λειτουργίας τους στα πλαίσια των ευρωπαϊκών κανονισμών. Αρχικά εκτιμώνται τα οικονομικά αποτελέσματα των γεωργικών εκμεταλλεύσεων βιομηχανικής τομάτας υπό τις παρούσες συνθήκες αλλά και ύστερα από πιθανές μελλοντικές αλλαγές. Στη συνέχεια μελετώνται τα κίνητρα που παρέχονται από τις εγχώριες μονάδες μεταποίησης βιομηχανικής τομάτας μέσω των συμβολαίων τους. Τέλος αναλύεται η σημασία της σωστής διαχείρισης τόσο από πλευράς παραγωγού όσο και μεταποιητών στην επιτυχία του συστήματος της συμβολαιικής γεωργίας
description: The contracting of crops has existed from time immemorial.This paper uses extensive data from both processing tomato growers and processing tomato industry in Greece to examine their operation within the European Union regulations. We first estimate the economic results achieved by processing tomato growers under given circumstances and after possible future changes. We then examine the incentive provisions in contracts used by greek tomato processing industries. Finally, we stress the importance of good farm and agribusiness management in the success of the contract farming system
Bearing Capacity Analysis of Pavements
Creators: name: Hopkins, Tommy C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1991
Subjects: subject: Transportation Engineering

description: A multilayered, mathematical model for analyzing the ultimate bearing capacity of soil subgrades and asphalt pavements is presented. Theoretical considerations and mathematical derivations of limit equilibrium equations, based on plasticity principles, for analyzing the ultimate bearing capacity of soil subgrades and partially completed asphalt pavements, and the extension of these equations to the analyses of asphalt pavements composed of multiple layers, are presented. The model is unique since shear strength parameters, Φ and c, (the angle of internal friction and cohesion, respectively) are used to describe each layer of material of the pavement structure and a factor of safety against failure is calculated. Problems involving total stress and effective stress analyses may be solved using the new model. Theoretical derivations of the shear surface selected for the model analyses is presented. The theoretical failure mass consists of three failure zones -- active and passive wedges connected by a central wedge whose shear surface is a logarithmic spiral curve. Creditibility of the model is established by solving three classes of pavement bearing capacity problems. Bearing capacity factors, Nc, Nq, and Ny, are computed from the new theoretical model and compared to the classical bearing capacity factors (Prandtl). Solutions obtained from a two-layered, semiempirical formula described by Vesic are compared to solutions obtained from the new mathematical model. Finally, factors of safety of asphalt pavements that failed during construction are analyzed. Factors of safety obtained from the model are compared to the failure factor of safety. These different analyses and comparisons show that the new model yields very reasonable solutions. Additionally, factors of safety of some 237 pavement sections of Loops 3, 4, 5, and 6 of the AASHO Road Test (1962) are computed and correlated to weighted. 18-kip. ESAL applications (P = 2.0). Analyses of the AASHO (flexille pavement) Road Test Equation (1962) and the 1981 Kentucky asphalt pavement curves using the new model show that there are situations where these design methods may yield pavement designs that may fail. Analyses of soil subgrades under typical construction traffic loadings using the model show that subgrade CBR-values should be in the range of about 6 to 8.5 to avoid bearing capacity failures during construction of subgrades and pavements. Several deficiencies of current design methods are identified and recommendations are made to correct these design and construction deficiencies.
Druggability and Genetic Variability at nsp9 Peptide-bound Pockets and Beta-barrel Pockets Across Coronaviruses and SARS-CoV-2 Samples
Creators: name: Yazdani, Setayesh
name: Maio, Nicola De
name: Yining Ding
name: Schapira, Matthieu
Publisher: name: Zenodo
Year: 2021

description: This report contains the druggability and genetic variability analysis of the peptide-bound pocket and beta-barrel pocket of nsp9 across coronaviruses and SARS-CoV-2 samples. This Zenodo report accompanies this post on OpenLabNotebooks.org.
The fraction of DA white dwarfs with kilo-Gauss magnetic fields
Creators: name: Jordan, S.
name: Cuadrado, R. Aznar
name: Napiwotzki, R.
name: Schmid, H. M.
name: Solanki, S. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Weak magnetic field has been searched for on only a small number of white dwarfs. Current estimates for white dwarfs with fields in excess of 1MG are about 10%; according to previous studies this number increases up to about 25% in the kG regime. Our aim is to improve the statistics by a new sample of ten white dwarfs in order to determine the ratio of magnetic to field-free white dwarfs. Mean longitudinal magnetic fields strengths were determined by means of high-precision circular polarimetry of Hbeta and Hgamma with the FORS1 spectrograph of the VLT ``Kueyen'' 8 m telescope. In one of our objects (LTT 7987) we detected a statistically significant (97% confidence level) longitudinal magnetic field varying between (-1+-0.5$)kG and (+1+-0.5)kG. This would be the weakest magnetic field ever found in a white dwarf, but at this level of accuracy, systematic errors cannot completely be ruled out. We also observed the sdO star EC11481-2303 but could not detect a magnetic field. VLT observations with uncertainties of typically 1000 G or less suggest that 15-20% of WDs have kG fields. Together with previous investigations, the fraction of kG magnetic fields in white dwarfs amounts to about 11-15%, which is close to the current estimations for highly magnetic white dwarfs (>1MG).
description: 11 pages, 4 figures, accepted for publication in A&A
Evaluation of PE Film
Creators: name: Funk, James E.
name: Hopwood, Theodore
name: Oberst, Christopher M.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1991
Subjects: subject: Transportation Engineering

description: Laboratory tests were conducted to assess the ability of a 3-mil thick adhesive-backed polyethylene film (Polymask) to protect vehicle paint finishes from acid-rain damage. The laboratory tests employed conditions known to be relevant to actual service conditions including: 1) automotive paints of various colors, 2) simulated acid-rain solutions (of pH values from 2.2 to 5.5), and 3) service temperatures (120 to 160 °F). Laboratory tests included cyclic evaporation and soak tests similar to those employed in a previous series of tests for Toyota (1). Cyclic evaporation tests were performed for 12 cycles and the soak tests were performed for 5 days. Two types of tests were performed: 1) permeability tests to determine the ability of acid rain to damage automotive paints through the protective coating and 2) edge tests to determine the effect of acid rain along the edge (seam) between the unprotected paint and the polyethylene film.  The permeability tests revealed that the film provided excellent resistance to permeability damage. The level of protection was superior to the acrylic polymer transit coating previously tested. However, the edges were sites of elevated damage which was more severe than for the exposed paint. Some undercutting was detected under the film. The undercutting was not prevalent at lower test temperatures and higher acid rain pH values. The edge damage might be prevented by careful placement of the seams or by caulking along the edges.
Bra-Ket Representation of the Inertia Tensor
Creators: name: Kim, U-Rae
name: Kim, Dohyun
name: Lee, Jungil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We employ Dirac's bra-ket notation to define the inertia tensor operator that is independent of the choice of bases or coordinate system. The principal axes and the corresponding principal values for the elliptic plate are determined only based on the geometry. By making use of a general symmetric tensor operator, we develop a method of diagonalization that is convenient and intuitive in determining the eigenvector. We demonstrate that the bra-ket approach greatly simplifies the computation of the inertia tensor with an example of an $N$-dimensional ellipsoid. The exploitation of the bra-ket notation to compute the inertia tensor in classical mechanics should provide undergraduate students with a strong background necessary to deal with abstract quantum mechanical problems.
description: 18 pages, 1 figure, Version published in J. Korean Phys. Soc
Συνδυασμός στοιχείων τεχνικής ανάλυσης με δένδρα αποφάσεων για δημιουργία χαρτοφυλακίου
Creators: name: Παπαβασιλείου, Βασίλειος Λεωνίδα
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Χαρτοφυλάκιο
Τεχνική ανάλυση
Δένδρα αποφάσεων
Μοντέλο αποτίμησης κεφαλαιουχικών αγαθών
Capm
Decision pro
Metastock

description: Στην παρούσα εργασία ερευνάται μία μέθοδος υπολογισμού της μέγιστης αναμενόμενης κεφαλαιοποίησης χαρτοφυλακίου, μέσα από την αξιολόγηση της αποδοτικότητας δεικτών τεχνικής ανάλυσης. Για τον σκοπό αυτό συνδυάζεται η χρήση του excel, του χρηματιστηριακού προγράμματος Metastock και του προγράμματος Decision Pro για τον υπολογισμό της αναμενόμενης κεφαλαιοποίησης μετοχής και κατ' επέκταση του χαρτοφυλακίου που σχηματίζεται. Στην πραγματικότητα αυτό που πετυχαίνει η παρούσα έρευνα είναι να αξιολογήσει την αποδοτικότητα των τεχνικών δεικτών ανάλυσης με βάση την μέγιστη αναμενόμενη κεφαλαιοποίηση δεδομένης μετοχής, όπως αυτή προκύπτει από τα σήματα αγοραπωλησιών που υποδεικνύει συγκεκριμένος τεχνικός δείκτης. Όλη η διαδικασία βασίζεται στην παραδοχή ότι κάθε μετοχή του Χ.Α.Α. έχει κάποιον τεχνικό δείκτη με τον οποίο συνεργάζεται καλύτερα απ' ότι με κάποιο άλλο και αυτό φαίνεται από το ιστορικό και την πορεία της μετοχής στο άμεσο παρελθόν. Δηλαδή δεν συγκρίνονται οι τεχνικοί δείκτες σε διάφορες μετοχές για να αξιολογηθεί η αποδοτικότητά τους, αλλά στην ίδια μετοχή για την οποία η έρευνα πιστεύει πώς έχει συγκεκριμένα χαρακτηριστικά που ταιριάζουν στο προφίλ συγκεκριμένου τεχνικού δείκτη
description: In the present work is inquired into a method of calculation of the maximum expected capitalisation of portfolio, through the evaluation of efficiency of indicators of technical analysis. For this purpose is combined the use of Excel, a stock exchange program Metastock and the program Decision Pro for the calculation of expected capitalisation of stocks and to an extent of the portfolio that takes shape. What is actually achieved from the present research is to evaluate the efficiency of the technical indicators of analysis aiming the biggest expected capitalisation of a given stock, as this results from the transaction signals that indicates a specified technical indicator. All the process is based on the admission that each stock of the Athens Stock Exchange has a certain technical indicator with which it collaborates better than with some other and this appears from the background and the course of action in the direct past. That is the technical indicators are not compared in various stocks in order to evaluate their efficiency, but in the same stock that the research believes that it has specified characteristics that suit in the profile of the specified technical indicator.
Massive kite diagrams with elliptics
Creators: name: Bezuglov, M. A.
name: Onishchenko, A. I.
name: Veretin, O. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the results for two-loop massive kite master integrals with elliptics in terms of iterated integrals with algebraic kernels. The key ingredients are new integral representations for sunset subgraphs in $d=4-2ε$ and $d=2-2ε$ dimensions together with differential equations for considered kite master integrals in $A+Bε$ form. The obtained results can be easily generalized to all orders in $ε$-expansion and show that the class of functions defined as iterated integrals with algebraic kernels may be large enough for writing down results for a large class of massive Feynman diagrams.
description: 21 page, 4 figures
Ελεγχος ενδοβαθμολογικής αξιοπιστίας στο Κρατικό Πιστοποιητικό Γλωσσομάθειας
Creators: name: Κλειδαρά, Χριστίνα Δήμου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Ενδοβαθμολογική αξιοπιστία
Κρατικό Πιστοποιητικό Γλωσσομάθειας
Συντελεστής συσχέτισης αξιοπιστίας
Intrarater reliability
Written assessment criteria grid
National Certificate of Knowledge in Foreign Languages

description: Η παρούσα εργασία έγινε με σκοπό να αποδείξει την ύπαρξη της ενδοβαθμολογικής αξιοπιστίας στο Κρατικό Πιστοποιητικό Γλωσσομάθειας. Η έρευνα έγινε σε αυθεντικά κείμενα της γραπτής δοκιμασίας στα επίπεδα Β2 και Γ1 της ιταλικής γλώσσας, για να αποδειχθεί το κατά πόσο υπάρχει ή όχι η ενδοβαθμολογική αξιοπιστία. Δηλαδή, κατά πόσο οι βαθμολογητές έχοντας μια συγκεκριμένη σχάρα αξιολόγησης μπορούν να είναι ικανοί να αξιολογούν σε διαφορετική χρονική στιγμή με την ίδια βαθμολογία
description: In this assessment are checked the factors that are external to the purpose of the written part can impact the manner in which a giver rater scores student responses. A rater may become fatigued with the scoring process and devote less attention to the analysis over time. Certain responses may revei different scores that they would have had they been scored earlier in the evaluation. A rater's mood on the given day or knowing who a respondent is may also impact the scoring process. Throughout the scoring process the rater should revisit the established criteria in order to ensure that consistency is maintained
The microscopic pairing gap in a slab of nuclear matter for the Argonne v18 NN-potential
Creators: name: Pankratov, S. S.
name: Baldo, M.
name: Lombardo, U.
name: Saperstein, E. E.
name: Zverev, M. V.
name: ;
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Ab initio gap equation for ^1S_0 pairing in a nuclear slab is solved for the Argonne v18 NN-potential. The gap function is compared in detail with the one found previously for the separable form of the Paris potential. The difference between the two gaps turned out to be about 10%. Dependence of the gap on the chemical potential mu is analyzed.
description: 20 pages, 8 figures
Εμπόδια στις προσωπικές κοινοτικές ελευθερίες από τους άμεσους φόρους των κρατών μελών ιδίως υπό το πρίσμα της νομολογίας του Δικαστηρίου των Ευρωπαϊκών Κοινοτήτων
Creators: name: Σπυρίδου, Αννα Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Αμεσοι φόροι
Κοινοτικό δίκαιο
Κοινοτικές ελευθερίες
Ελευθερία εργασίας
Ελευθερία εγκατάστασης
Ελεύθερος ανταγωνισμός
Direct taxes
European law
European freedoms
Freedom of working
Trade freedom
Free competition

description: Η εναρμόνιση στον τομέα των άμεσων φόρων σε κοινοτικό επίπεδο είναι περιορισμένη. Για το λόγο λοιπον ότι οι άμεσοι φόροι ανήκουν ακόμη στην αρμοδιότητα των κρατών-μελών, είναι συχνό το φαινόμενο οι βασικές κοινοτικές ελευθερίες, ήτοι η ελευθερία εργασίας, εγκατάστασης, παροχής υπηρεσιών και κίνησης κεφαλαίων να υφίστανται περιορισμούς. Με άλλα λόγια, είναι δυνατόν οι άμεσοι φόροι που επιβάλλουν τα κράτη-μέλη να αποτελούν εμπόδο στην άσκηση των παραπάνω ελευθεριών. Το γεγονός αυτό όμως δεν είναι συμβατό με το κοινοτικό δίκαιο καθώς τα κράτη μέλη κατά την άσκηση των αρμοδιοτήτων τους δεν επιτρέπεται να παραβιάζουν τις υποχρεώσεις τους που απορρέουν από τη Συνθήκη, όπως είναι η ανεμπόδιστη άσκηση των παραπάνω ελευθεριών, παρά μόνο αν υπάρχει λόγος δημόσιου συμφέροντος, συμβατός με τη Συνθήκη και εφόσον τηρείται η αρχής της αναλογικότητας. Το δικαστήριο των Ευρωπαϊκών κοινοτήτων έχει να επιδείξει πλούσια νομολογία στον τομέα αυτό και εντοπίζοντας τις παραβιάσεις, εξαναγκάζει τα κράτη-μέλη να συμμορφωθούν προς το κοινοτικό δίκιαο, τροποποιώντας πολλές φορές το φορολογικό καθεστώς τους
description: There is a restricted common policy for direct taxes in European Union. As a result the direct taxes of the countries-members restrict many times the basic European freedoms, such as working freedom, trade freedom, freedom of services and movement. But this fact is against the purposes of the European Union and law. So, the European Court by its decisious forces the countries to change their tax law and policty in order to respect the european freedoms refered above
The Joint Concept Development and Experimentation Campaign Plan FY2004-2011
Creators: name: Commander, US Joint Forces Command
Publisher: name: Digital Repository at the University of Maryland
Year: 2004
Subjects: Government Publications
Department of Defense
campaign plan
strategy and methodology

description: As the Department of Defense (DOD) Executive Agent for Joint Experimentation, USJFCOM develops a broad, multi-year, iterative Campaign Plan for the Chairman, Joint Chiefs of Staff. Principal authorities for development of this campaign plan are found in the Secretary's Transformation Planning Guidance and the Chairman's Joint Experimentation Guidance.2 This plan has been developed through extensive collaboration with Combatant Command, Service, Joint Staff, Office of the Secretary of Defense and selected interagency and multinational partners. The strategy and methodology described in this plan have been in execution for over one year. The campaign has already improved joint warfighting and resulted in innovative joint concepts. Unclassified
Argo Project: Machine vision based motion capture for tracking the trajectory of the pose of a mobile rigid body
Creators: name: Liggins, Geoffrey Allan
Publisher: name: University of British Columbia
Year: 2009

description: The objective of the Argo Project is to develop a tool that will track in real-time the motion of unconstrained, self-propelled, model ships in seakeeping tests done in towing tanks and manoeu-vring basins. To meet the unconstrained requirement, the tracking system must be non- contact and can not interfere with the operation or motion of the model ship. An additional operating requirement is that the sensor must cover an area in excess of thirty square metres. An optical based sensor was selected as it satisfied these constraints. Tracking the motion of the model ship is achieved with a predictive, extended Kalman filter (EKF), using feature point extraction from multiple synchronized images. The EKF is used because it can readily integrate and filter multiple noisy data sets. As well, it can generate an estimate of the pose, namely the position and orientation, of the model ship relative to the reference frame of the test tank. While this project is focused on ship tracking there are many other applications for a system of this kind. TM The system under development makes use of the Qualisys camera and video processor hardware that extract image feature points and return them to a host computer. The incoming image TM feature points are then fed into tracking software developed in MATLAB . The tracking software uses estimates of the image to do feature point correspondence and sorts the incoming data vector into the expected order. The sorted data vector is then used as the input vector for the EKF which computes the photogrammetric equations and computes the state vector for the pose of the mobile object being tracked. This work is being undertaken at the University of British Columbia (UBC), Deparment of Mechanical Engineering, Maritime Engineering and Naval Architecture Research Laboratory. The organizaitons that assisted in this research effort are the Centre for Cold Ocean Resources Engineering, Intelligent Systems Group
Waveguide Components and Aperture Antennas With Frequency- and Time-Domain Selectivity Properties
Creators: name: Barbuto, Mirko
name: Lione, Daniele
name: Monti, Alessio
name: Vellucci, Stefano
name: Bilotti, Filiberto
name: Toscano, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Physics (physics.class-ph)
subject: Signal Processing (eess.SP)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Filtering modules are essential devices of modern microwave systems given their capability to improve the signal-to-noise ratio of the received signal or to eliminate the unwanted interferences. For discriminating between different components, a filter exhibits a frequency-selective response that, however, is not able to distinguish between different signals whose spectrum falls within the passband of the filter itself. In this regard, some electromagnetic structures exhibiting, at the same frequency, different responses depending on the waveform of the incoming waves have been recently proposed. In this communication, we extend the aforementioned approach to the case of a standard waveguide filtering module. In particular, by loading a bandpass filtering iris with a proper lumped-element circuit, we design a waveguide component able to distinguish between different pulsed waves, even at the same frequency, depending on their pulsewidth. Moreover, by using this filter for capping an open-ended rectangular waveguide, a radiating element with both frequency- and time-domain selectivity properties is presented. The structures discussed in this communication may pave the way to a new class of microwave systems that, being both frequency selective and time selective, are less sensitive to noise and interferences.
The joint role of geometry and illumination on material recognition
Creators: name: Lagunas, Manuel
name: Serrano, Ana
name: Gutierrez, Diego
name: Masia, Belen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Graphics (cs.GR)
subject: FOS: Computer and information sciences

description: Observing and recognizing materials is a fundamental part of our daily life. Under typical viewing conditions, we are capable of effortlessly identifying the objects that surround us and recognizing the materials they are made of. Nevertheless, understanding the underlying perceptual processes that take place to accurately discern the visual properties of an object is a long-standing problem. In this work, we perform a comprehensive and systematic analysis of how the interplay of geometry, illumination, and their spatial frequencies affects human performance on material recognition tasks. We carry out large-scale behavioral experiments where participants are asked to recognize different reference materials among a pool of candidate samples. In the different experiments, we carefully sample the information in the frequency domain of the stimuli. From our analysis, we find significant first-order interactions between the geometry and the illumination, of both the reference and the candidates. In addition, we observe that simple image statistics and higher-order image histograms do not correlate with human performance. Therefore, we perform a high-level comparison of highly non-linear statistics by training a deep neural network on material recognition tasks. Our results show that such models can accurately classify materials, which suggests that they are capable of defining a meaningful representation of material appearance from labeled proximal image data. Last, we find preliminary evidence that these highly non-linear models and humans may use similar high-level factors for material recognition tasks.
description: 15 pages, 16 figures, Accepted to the Journal of Vision, 2021