cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Educational Reconstruction as a Model for Designing Science Teaching at University
Creators: name: Petchey, Sara Elizabeth
name: Niebert, Kai
Publisher: name: Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung und Diskussion
Year: 2021

description: Dropout rates for university students in STEM fields are high, and students often cite poor teaching as contributing factor. Improving the teaching skills of university science instructors needs a different approach from school-teacher training, as university instructors often have different career goals and different views of the role of students in learning. In this paper, we present “Teaching Science at University,” a professional development course focused on developing pedagogical content knowledge (PCK) and grounded in the Model of Educational Reconstruction (MER) as a framework for the design of teaching interventions. Course participants are early career scientists (PhD researchers to tenure-track professors) with expertise in their scientific field, but little educational training. They start the course with sophisticated content knowledge (CK), and through the course, they gain content- and audience-specific pedagogical techniques (PCK). To assess the effects of the course, we analyzed participants’ assignments (n=63) and pre- and post-course surveys (n=100, 54). We found that participants demonstrated increased valuing of student-centered teaching, especially the consideration of students’ prior knowledge. We found participants were not only able to build conceptual change interventions specific to their learners’ levels of knowledge, but that they also expressed appreciation for the structure that the MER provided to the design of teaching and its role in emphasizing student conceptions. We conclude that PCK-based teaching training should have a role in improving instruction in higher education. We also conclude that the MER provides a useful framework for the design of teaching interventions by science instructors at the university level, and we propose a five-step MER approach for daily teaching practice.
description: Herausforderung Lehrer*innenbildung - Zeitschrift zur Konzeption, Gestaltung und Diskussion, Bd. 4 Nr. 2 (2021): Das Modell der Didaktischen Rekonstruktion – Rahmen und Impulsgeber für die Entwicklung von Fachdidaktik und Unterricht
Restricted Flows and the Soliton Equation with Self-Consistent Sources
Creators: name: Lin, Runliang
name: Yao, Haishen
name: Zeng, Yunbo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The KdV equation is used as an example to illustrate the relation between the restricted flows and the soliton equation with self-consistent sources. Inspired by the results on the Backlund transformation for the restricted flows (by V.B. Kuznetsov et al.), we constructed two types of Darboux transformations for the KdV equation with self-consistent sources (KdVES). These Darboux transformations are used to get some explicit solutions of the KdVES, which include soliton, rational, positon, and negaton solutions.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
N=4, d=3 nonlinear electrodynamics
Creators: name: Bellucci, S.
name: Krivonos, S.
name: Shcherbakov, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct a new off-shell $\mathcal{N}{=}4$, $d{=}3$ nonlinear vector supermultiplet. The irreducibility constraints for the superfields leave in this supermultiplet the same component content as in the ordinary linear vector supermultiplet. We present the most general sigma-model type action for the $\mathcal{N}{=}4$, $d{=}3$ electrodynamics with the nonlinear vector supermultiplet, which despite the nonlinearity of the supermultiplet may be written as an integral over a chiral superspace. This action share the most important properties with its linear counterpart. We also perform the dualization of the vector component into a scalar one and find the corresponding $\mathcal{N}{=}4$, $d{=}3$ supersymmetric action which describes new hyper-Kähler sigma-model in the bosonic sector.
description: 8 pages, LaTeX file, PACS numbers: 11.30.Pb, 03.65.-w
Transport of sorbing solutes in fractured media : a numerical and experimental analysis of dispersion and retardation
Creators: name: Wels, Christoph
Publisher: name: University of British Columbia
Year: 2009

description: The primary pathways for contaminant transport in lowpermeability fractured rock are likely to be through a network of hydraulically-connected fractures in the rock formation. Sorption of contaminants to the fracture walls may significantly retard their transport. The influence of sorption on solute transport is analyzed using both numerical and laboratory migration experiments. A random walk model is developed to simulate solute transport in a parallel plate fracture, assuming that fast, reversible, and linear sorption occurs in a small zone adjacent to the fracture wall. It is shown that a sorbing solute experiences greater longitudinal spreading than does a conservative solute. The magnitude of this enhanced dispersion reaches a maximum in the range of fluid velocities characteristic of Taylor dispersion. At the network scale, transport is simulated by tracking particles in discrete fracture networks, assuming that within each fracture, retardation varies in proportion to the product of a surface distribution coefficient and the specific surface area of the fracture. The results suggest that retardation at the plume scale is a non-uniform and anisotropic process. Different segments of the plume, or equivalently different breakthrough fractions at a downstream boundary, are retarded to a different degree. The degree to which various breakthrough fractions are retarded varies as a function of the orientation of the mean hydraulic gradient relative to the orientation of the fracture sets. This variation can be described in the form of a retardation ellipse. To test the surface retardation model used in the numerical analyses, the sorbing radionuclides strontium and uranium were injected in smooth-walled fractures in granite and steel, respectively. The retardation of uranium was inversely proportional to fracture aperture, providing qualitative support for the definition of the surface retardation factor. The influence of fracture aperture on the retardation of strontium was much greater than that predicted by the surface retardation factor. Strontium retardation was approximately an order of magnitude greater in a narrow fracture (b=450jim, Ra=45) compared to that in a wide fracture (b=780jim, Ra=3.5) . It is hypothesized that hysteresis in sorption, in conjunction with limited transverse mixing across the fracture, caused the apparent increase in sorption strength with a decrease in fracture aperture.
Ρητορικά σχήματα στη διαφήμιση μέσω του Google Adwords:
Creators: name: Κουμπής, Δημήτριος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ρητορικά σχήματα
Διαφήμιση
Σχήματα λόγου
Adwords
Rhetoric
Advertising

description: Η παρούσα διπλωματική εξέτασε τη χρήση ρητορικών σχημάτων λόγου στη διαφήμιση με σκοπό τη βελτίωση της αποτελεσματικότητας αυτών. Συγκεκριμένα, εξετάστηκε η αποτελεσματικότητα των διαδικτυακών διαφημίσεων μέσω της υπηρεσίας των Google Adwords. Αφού έγινε η επισκόπηση της ελληνικής αρθρογραφίας και βιβλιογραφίας, διεξήχθη ένα πείραμα με πραγματικές διαφημίσεις εκφρασμένες με διάφορα σχήματα λόγου ώστε να βγούν κάποια συμπεράσματα σχετικά με το ποια από αυτά είναι πιο αποδοτικά.
description: The aim of this thesis was the examination of different figures of rhetoric in advertising in order to improve their effectiveness. Advertisements were examined with the use of Google Adwords. Literature review of Google Adwords and rhetorical figures was presented and subsequently an experiment was made with some Google Adwords advertisements expressed in different ways with the help of rhetorical devices. This research has drawn many important conclusions for the effectiveness of use of rhetorical figures in Google Adwords language.
Code and data for Carinata in the Southeastern US
Creators: name: Field, John
Publisher: name: figshare
Year: 2022
Subjects: subject: 70301 Agro-ecosystem Function and Prediction
subject: FOS: Agriculture, forestry and fisheries
subject: 70104 Agricultural Spatial Analysis and Modelling
subject: FOS: Other agricultural sciences
subject: 70101 Agricultural Land Management
subject: 50301 Carbon Sequestration Science
subject: 50204 Environmental Impact Assessment
subject: FOS: Earth and related environmental sciences
subject: Environmental Science

description: Data and analysis code for:
JL Field, Y Zhang, E Marx, KJ Boote, M Easter, S George, N Hoghooghi, G Johnston, MFH Masum, MJ Mulvaney, K Paustian, R Seepaul, A Swan, S Williams, D Wright & P Dwivedi. (2022) Modeling yield, biogenic emissions, and carbon sequestration in southeastern cropping systems with winter carinata. Frontiers in Energy Research. https://www.frontiersin.org/articles/10.3389/fenrg.2022.837883/full

Please send questions/comments to John.L.Field@gmail.com
Spatial stochastic predator-prey models
Creators: name: Mobilia, Mauro
name: Georgiev, Ivan T.
name: Tauber, Uwe C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We consider a broad class of stochastic lattice predator-prey models, whose main features are overviewed. In particular, this article aims at drawing a picture of the influence of spatial fluctuations, which are not accounted for by the deterministic rate equations, on the properties of the stochastic models. Here, we outline the robust scenario obeyed by most of the lattice predator-prey models with an interaction "a' la Lotka-Volterra". We also show how a drastically different behavior can emerge as the result of a subtle interplay between long-range interactions and a nearest-neighbor exchange process.
description: 5 pages, 2 figures. Proceedings paper of the workshop "Stochastic models in biological sciences" (May 29 - June 2, 2006 in Warsaw) for the Banach Center Publications
Merger of black hole-neutron star binaries in full general relativity
Creators: name: Shibata, Masaru
name: Uryu, Koji
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present our latest results for simulation for merger of black hole (BH)-neutron star (NS) binaries in full general relativity which is performed preparing a quasicircular state as initial condition. The BH is modeled by a moving puncture with no spin and the NS by the $Γ$-law equation of state with $Γ=2$ and corotating velocity field as a first step. The mass of the BH is chosen to be $\approx 3.2 M_{\odot}$ or $4.0M_{\odot}$, and the rest-mass of the NS $\approx 1.4 M_{\odot}$ with relatively large radius of the NS $\approx 13$--14 km. The NS is tidally disrupted near the innermost stable orbit but $\sim 80$--90% of the material is swallowed into the BH and resulting disk mass is not very large as $\sim 0.3M_{\odot}$ even for small BH mass $\sim 3.2M_{\odot}$. The result indicates that the system of a BH and a massive disk of $\sim M_{\odot}$ is not formed from nonspinning BH-NS binaries irrespective of BH mass, although a disk of mass $\sim 0.1M_{\odot}$ is a possible outcome for this relatively small BH mass range as $\sim 3$--4$M_{\odot}$. Our results indicate that the merger of low-mass BH and NS may form a central engine of short-gamma-ray bursts.
description: 14 pages. To appear in a special issue of Classical and Quantum Gravity: New Frontiers in Numerical Relativity
Discrete Breathers in Two-Dimensional Anisotropic Nonlinear Schrodinger lattices
Creators: name: Gomez-Gardenes, J.
name: Floria, L. M.
name: Bishop, A. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the structure and stability of discrete breathers (both pinned and mobile) in two-dimensional nonlinear anisotropic Schrodinger lattices. Starting from a set of identical one-dimensional systems we develop the continuation of the localized pulses from the weakly coupled regime (strongly anisotropic) to the homogeneous one (isotropic). Mobile discrete breathers are seen to be a superposition of a localized mobile core and an extended background of two-dimensional nonlinear plane waves. This structure is in agreement with previous results on onedimensional breather mobility. The study of the stability of both pinned and mobile solutions is performed using standard Floquet analysis. Regimes of quasi-collapse are found for both types of solutions, while another kind of instability (responsible for the discrete breather fission) is found for mobile solutions. The development of such instabilities is studied, examining typical trajectories on the unstable nonlinear manifold.
description: 13 pages, 9 figures
The Development of Neuroangiography and Its Role In Cerebrovascular Surgery
Creators: name: Patel, Rahul
name: Farooq, Mustafa
name: Farooq, Maheen
name: Mehra, Mehul
Publisher: name: History of Radiology
Year: 2024

description: Abstract

Neuroangiography, a specialized imaging technique for visualizing cerebral blood vessels, has been a transformative tool in the diagnosis and treatment of cerebrovascular disorders such as aneurysms, arteriovenous malformations (AVMs), and strokes. Since its inception in the early 20th century, neuroangiography has evolved from high-risk, invasive procedures to advanced, minimally invasive techniques that have greatly improved diagnostic accuracy and surgical outcomes. The development of cerebral angiography by Egas Moniz in 1927 marked a significant milestone, enabling physicians to visualize intracranial vessels for the first time. Subsequent advancements, including the introduction of digital subtraction angiography (DSA) in the 1970s, revolutionized the field by providing clearer, high-resolution images with reduced risk to patients. DSA remains the gold standard for diagnosing cerebrovascular conditions, particularly aneurysms and AVMs. More recent innovations, such as computed tomography angiography (CTA) and magnetic resonance angiography (MRA), have further refined the ability to detect and treat cerebrovascular diseases with greater precision and safety. Additionally, neuroangiography has played a critical role in guiding endovascular treatments, such as aneurysm coiling and AVM embolization, and in stroke management through procedures like thrombectomy. Emerging technologies, including augmented reality and machine learning, promise to further enhance the accuracy and effectiveness of neuroangiography in the years to come. This review highlights the historical development of neuroangiography and its enduring impact on cerebrovascular surgery.
Functional transcription factor target discovery via compendia of binding and expression profiles
Creators: name: Banks, Christopher
name: Anagha Joshi
name: Michoel, Tom
Publisher: name: F1000Research
Year: 2015

description: Genome-wide experiments to map the DNA-binding locations of transcription-associated factors (TFs) have shown that the number of genes bound by a TF far exceeds the number of possible direct target genes. Distinguishing functional from non-functional binding is therefore a major challenge in the study of transcriptional regulation. We hypothesized that functional targets can be discovered by correlating binding and expression profiles across multiple experimental conditions. To test this hypothesis, we obtained ChIP-seq and RNA-seq data from matching cell types from the human ENCODE resource, considered promoter- proximal and distal cumulative regulatory models to map binding sites to genes, and used a combination of linear and non-linear measures to correlate binding and expression data. We found that a high degree of correlation between a gene’s TF-binding and expression profiles was significantly more predictive of the gene being differentially expressed upon knockdown of that TF, compared to using binding sites in the cell type of interest only . Remarkably, TF targets predicted from correlation across a compendium of cell types were also predictive of functional targets in other cell types. Finally, correlation across a time course of ChIP-seq and RNA-seq experiments was also predictive of functional TF targets in that tissue.
The Development of Neuroangiography and Its Role In Cerebrovascular Surgery
Creators: name: Farooq, Mustafa
name: Farooq, Maheen
name: Mehra, Mehul
Publisher: name: History of Radiology
Year: 2024

description: This review article, titled The Development of Neuroangiography and Its Role in Cerebrovascular Surgery, explores the historical evolution of neuroangiography from its early invasive techniques to modern, minimally invasive procedures. Authored by Mustafa Farooq, Maheen Farooq, and Mehul Mehra, the article details key technological advancements, including the introduction of digital subtraction angiography (DSA), and discusses the critical role neuroangiography plays in diagnosing and treating cerebrovascular conditions such as aneurysms, arteriovenous malformations (AVMs), and strokes. The review also highlights the impact of neuroangiography on surgical planning, patient outcomes, and the future potential of technologies such as augmented reality and machine learning in cerebrovascular surgery.
e – Government και πρόγραμμα «Δι@ύγεια»: Η περίπτωση του Δήμου Βέροιας:
Creators: name: Βικοπούλου, Αικατερίνη-Δέσποινα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ηλεκτρονική διακυβέρνηση
Δι@ύγεια
Δήμος Βέροιας
e–Government
Di@vgeia
Municipality of Veria

description: Στην έρευνα αυτή διερευνήσαμε τις απόψεις των διοικητικών υπαλλήλων του Δήμου Βέροιας σε σχέση με τις εφαρμογές ηλεκτρονικής διακυβέρνησης (e - Gov) γενικότερα και με το πρόγραμμα «Δι@ύγεια» ειδικότερα και την επίδραση αυτών των εφαρμογών στην εργασία τους. Καταγράψαμε την Πρόθεση Χρήσης του προγράμματος «Δι@ύγεια» από τους υπαλλήλους και προσπαθήσαμε να εντοπίσουμε τους παράγοντες που την επηρεάζουν. Για να καθορίσουμε ποιοι παράγοντες επηρεάζουν την Πρόθεση Χρήσης του προγράμματος χρησιμοποιήσαμε ανάλυση με απλή λογαριθμική και γραμμική παλινδρόμηση. Για επιβεβαίωση των αποτελεσμάτων χρησιμοποιήθηκε ανάλυση κατά Wald (backward stepwise analysis). Το Προσλαμβανόμενο Ηθικό Καθήκον ήταν ο παράγων με την μεγαλύτερη επιρροή στην Πρόθεση Χρήσης του προγράμματος.
description: In this study we investigated the Municipality of Veria’s employees’ aspects in relation to e-government applications in general and the program ««Di@vgeia»» in particular and the impact of these applications in their job. We wrote down the employees’ intention to use the program ««Di@vgeia»» and we attempted to determine the influential factors about it. To define the determinants in using the program «Di@vgeia» we used a simple logistic and linear regression analysis. To confirm the results of analysis we used a Wald backward stepwise analysis. The main determinant suggested by this analysis was Perceived Moral Duty.
On the Darboux-Nijenhuis Variables for the Open Toda Lattice
Creators: name: Grigoryev, Yuriy A.
name: Tsiganov, Andrey V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss two known constructions proposed by Moser and by Sklyanin of the Darboux-Nijenhuis coordinates for the open Toda lattice.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Μελέτη και βελτίωση της ακρίβειας της μεθόδου κατηγοριοποίησης Mahalanobis-Taguchi Strategy με τεχνικές Bootstrap και Bagging:
Creators: name: Παντράκη, Ευαγγελία Εμμανουήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Στρατηγική Mahalanobis-Taguchi
Δυαδική κατηγοριοποίηση
Βελτίωση ακρίβειας κατηγοριοποίησης
Mahalanobis-Taguchi strategy
Binary Classification
Classification accuracy improvement

description: Στόχος της παρούσας διπλωματικής είναι η διερεύνηση της στρατηγικής Mahalanobis-Taguchi, η οποία προβαίνει σε δυαδική κατηγοριοποίηση με την παροχή κατάλληλης κλίμακας μέτρησης για κάθε κατηγορία πληθυσμού, και υποβοηθά τη λήψη αποφάσεων σε συστήματα πολλών διαστάσεων. Η παρούσα διπλωματική εξετάζει την εφαρμογή των μεθόδων Bootstrap και Bagging με στόχο την βελτίωση της προβλεπτικής ικανότητας της στρατηγικής Mahalanobis-Taguchi. Συγκεκριμένα, με βάση τη μέθοδο Bootstrap προβαίνουμε σε εκτίμηση διαστημάτων εμπιστοσύνης για τις τιμές της κλίμακας μέτρησης που δημιουργείται από την στρατηγική Mahalanobis-Taguchi, καθώς και σε εκτίμηση της αναμενόμενης απόδοσης της κατηγοριοποίησης που επιτυγχάνει η στρατηγική, στα σύνολα δεδομένων στα οποία εφαρμόζεται. Ακόμα, στο πλαίσιο της διπλωματικής, η μέθοδος Bagging, η οποία υλοποιείται με χρήση της μεθόδου Bootstrap, εφαρμόζεται σε πραγματικά σύνολα δεδομένων και δίνει ενθαρρυντικά αποτελέσματα όσον αφορά την βελτίωση της απόδοσης της πρόβλεψης της στρατηγικής Mahalanobis-Taguchi.
description: The aim of the present thesis is the study of the Mahalanobis-Taguchi strategy, which implements binary classification by providing a suitable measurement scale for each class and helps the decision making process in multi-dimensional systems. The present thesis examines if the applying of the Bootstrap and the Bagging methods, leads to an improvement in the predictive accuracy of the Mahalanobis-Taguchi strategy. More specifically, using the Bootstrap method, we evaluate confidence intervals for the values of the measurement scale that is constructed by the Mahalanobis-Taguchi strategy. Furthermore, we evaluate confidence intervals for the expected classification performance of the strategy on the specific datasets that is applied. Moreover, in this thesis, the Bagging method, which is implemented using the Bootstrap method, is applied to real datasets and achieves promising results in the improvement of the classification prediction of the Mahalanobis-Taguchi strategy.
Sphingolipid Control Dermal Fibroblast Heterogeneity
Creators: name: Capolupo Laura
name: Guiet Romain
Publisher: name: Zenodo
Year: 2021
Subjects: mRNA-FISH, single cell, cell-to-cell variability

description: mRNA-FISH analysis in dermal human fibroblasts of glycosphingolipid synthetic enzymes
Galaxies Under the Cosmic Microscope: Resolved Spectroscopy and New Constraints on the z=1 Tully-Fisher relation
Creators: name: Swinbank, M.
name: Bower, R.
name: Smith, G. P.
name: Smail, Ian
name: Kneib, J. -P.
name: Ellis, R.
name: Stark, D.
name: Bunker, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We exploit the gravitational potential of massive cluster lenses to probe the emission line properties of six z=1 galaxies which appear as highly magnified luminous arcs. Using the GMOS integral field spectrograph together with detailed cluster lens models we reconstruct the intrinsic morphologies and two-dimensional velocity fields in these galaxies on scales corresponds to \~0.5kpc (unlensed) at z=1. Four of the galaxies have stable disk-like kinematics, whilst the other two resemble interacting or starburst galaxies. These galaxies lie close to the mean rest-frame I-band Tully-Fisher relation for nearby spirals suggesting a clear preference for hierarchical growth of structure. In the rest-frame B-band, the observations suggest 0.5+/-0.3mag of brightening, consistent with increased star-formation activity at z=1. However, the galaxies with stable disk kinematics have more slowly rising rotation curves than expected from galaxies with similar surface brightness in the local Universe. We suggest that this may arise because the distant galaxies have lower bulge masses than their local counter-parts. Whilst this study is based on only six galaxies, the gain in flux and in spatial resolution achieved via gravitational magnification provides a much more detailed view of the high redshift Universe than possible with conventional surveys.
description: 15 pages. Accepted for publication in MNRAS
Ναρκισσισμός στο περιβάλλον εργασίας των ένστολων:
Creators: name: Δουράνη, Μαρία Πασχάλη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ναρκισσισμός
Ανάγκη για δύναμη
Στολή
Narcissism
Need for power
Uniform – Organizational dress - Attire

description: Σκοπός της διπλωματικής μεταπτυχιακής εργασίας ήταν η μελέτη της συμπεριφοράς των ναρκισσιστών στο περιβάλλον εργασίας. Εξετάσαμε αν οι ναρκισσιστές έχουν ανάγκη για δύναμη και αν αυτή η ανάγκη είναι η αιτία που τους οδηγεί να επιλέξουν ένα ένστολο επάγγελμα. Συγκεκριμένα, επικεντρωθήκαμε σε εργαζομένους των Ενόπλων Δυνάμεων (Ελληνικός Στρατός και Ελληνική Πολεμική Αεροπορία). Στην ερευνά μας λοιπόν, πέρα από τη βιβλιογραφική επισκόπηση των τριών μεταβλητών (Ναρκισσισμός, Ανάγκη για δύναμη, Στολή) αποδείξαμε τη θετική σχέση του ναρκισσισμού με την ανάγκη για δύναμη και τη θετική σχέση του ναρκισσισμού με τη στολή. Επιπλέον, καταλήξαμε στη θετική σχέση της ανάγκης για δύναμη με τη στολή και τη μερική μεσολάβηση (partial mediation) της ανάγκη για δύναμη στη θετική σχέση του ναρκισσισμού και της στολής. Εξαιτίας της μερικής μεσολάβησης συμπεραίνουμε ότι ίσως υπάρχουν και άλλοι παράγοντες που μπορεί να παρεμβαίνουν στη σχέση ναρκισσισμού – στολής και γι’ αυτό τον λόγο ο μηχανισμός δεν μπορεί να εξηγηθεί πλήρως από τη δράση της μεταβλητής ανάγκη για δύναμη.
description: The aim of the present thesis was to study the behavior of narcissists in the workplace. We examined if narcissists have need for power and if that can lead them to choose a profession with uniform (or organizational dress or attire). Specifically, our research focused on employees of Armed Forces (Greek Army and Greek Air Force). So, except from the literature review of the three variables (Narcissism, Need for power, Uniform), we demonstrated positive relationship between narcissism and need for power and also positive relationship between narcissism and uniform. Furthermore, we proved positive relationship between need for power and uniform and also partial mediation of variable need for power in the positive relationship of narcissism and uniform. Because of the partial mediation, we concluded that probably there are also some other factors that can interfere in the relationship of narcissism and uniform, which means that the model can not be fully explained only by the variable need for power.
Design and manufacture of micro-optical arrays using 3D diamond machining techniques
Creators: name: Schmoll, Juergen
name: Robertson, David J.
name: Ryder, David A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe our work towards the manufacture of micro-optical arrays using freeform diamond machining techniques. Simulations have been done to show the feasibility of manufacturing micro-lens arrays using the slow-tool servo method. Using this technique, master shapes can be produced for replication of micro-lens arrays of either epoxy-on-glass or monolthic glass types. A machine tool path programme has been developed on the machine software platform DIFFSYS, allowing the production of spherical, aspherical and toric arrays. In addition, in theory spatially varying lenslets, sparse arrays and dithered lenslet arrays (for high contrast applications) are possible to produce. In practice, due to the diamond tool limitations not all formats are feasible. Investigations into solving this problem have been carried out and a solution is presented here.
description: 8 pages, 11 figures. Copyright 2006 Society of Photo-Optical Engineers. This paper will be published in SPIE Conf. Series 6273 and is made available as an electronic preprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or commercial purposes, or modification of the content of the paper are prohibited
Quantum Description of Nuclear Spin Cooling in a Quantum Dot
Creators: name: Christ, H.
name: Cirac, J. I.
name: Giedke, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study theoretically the cooling of an ensemble of nuclear spins coupled to the spin of a localized electron in a quantum dot. We obtain a master equation for the state of the nuclear spins interacting with a sequence of polarized electrons that allows us to study quantitatively the cooling process including the effect of nuclear spin coherences, which can lead to ``dark states'' of the nuclear system in which further cooling is inhibited. We show that the inhomogeneous Knight field mitigates this effect strongly and that the remaining dark state limitations can be overcome by very few shifts of the electron wave function, allowing for cooling far beyond the dark state limit. Numerical integration of the master equation indicates, that polarizations larger than 90% can be achieved within a millisecond timescale.
description: published version; 9 pages, 4 figures
Van Hove Singularity and Apparent Anisotropy in the Electron-Phonon Interaction in Graphene
Creators: name: Park, Cheol-Hwan
name: Giustino, Feliciano
name: McChesney, Jessica L.
name: Bostwick, Aaron
name: Ohta, Taisuke
name: Rotenberg, Eli
name: Cohen, Marvin L.
name: Louie, Steven G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that the electron-phonon coupling strength obtained from the slopes of the electronic energy vs. wavevector dispersion relations, as often done in analyzing angle-resolved photoemission data, can differ substantially from the actual electron-phonon coupling strength due to the curvature of the bare electronic bands. This effect becomes particularly important when the Fermi level is close to a van Hove singularity. By performing {\it ab initio} calculations on doped graphene we demonstrate that, while the apparent strength obtained from the slopes of experimental photoemission data is highly anisotropic, the angular dependence of the actual electron-phonon coupling strength in this material is negligible.
description: 5 pages 4 figures
The Fermi edge singularity of spin polarized electrons
Creators: name: Plochocka-Polack, P.
name: Groshaus, J. G.
name: Rappaport, M.
name: Umansky, V.
name: Gallais, Y.
name: Pinczuk, A.
name: Bar-Joseph, I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the absorption spectrum of a two-dimensional electron gas (2DEG) in a magnetic field. We find that that at low temperatures, when the 2DEG is spin polarized, the absorption spectra, which correspond to the creation of spin up or spin down electron, differ in magnitude, linewidth and filling factor dependence. We show that these differences can be explained as resulting from creation of a Mahan exciton in one case, and of a power law Fermi edge singularity in the other.
description: 4 pages, 4 figures, published in Phys. Rev. Lett
Irreducible Killing Tensors from Third Rank Killing-Yano Tensors
Creators: name: Popa, Florian Catalin
name: Tintareanu-Mircea, Ovidiu
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate higher rank Killing-Yano tensors showing that third rank Killing-Yano tensors are not always trivial objects being possible to construct irreducible Killing tensors from them. We give as an example the Kimura IIC metric were from two rank Killing-Yano tensors we obtain a reducible Killing tensor and from third rank Killing-Yano tensors we obtain three Killing tensors, one reducible and two irreducible.
description: 10 pages
Central Performance Testing: Purpose, Benefits, Impacts, and Trends
Creators: name: Gipson, Terry A.
name: Gipson, Terry A.
Publisher: name: Unknown
Year: 2020
Subjects: subject: Livestock Production/Industries
subject: Production Economics
subject: Central Performance Test
subject: Genetics
subject: FOS: Biological sciences
subject: Selection
subject: Evaluation
subject: Strengths-Weaknesses-Opportunities-Threats

description: The premise of the central performance test is that differences in performance of young animals raised in a common environment are largely attributed to genetics; however, this can be confounded by differences in pre-test environments. It is assumed top-ranking individual’s genetic advantage is a permanent change transferable to the next generation. The popularity of the central performance tests has waxed and waned over the past decades. A strengths-weaknesses-opportunities-threats analysis indicates factors influencing producer participation can include cost, time, geographical coverage, alignment with industry, association support, and relevancy. A second generation of central performance tests with innovative, targeted approaches is needed to face the challenges of the goat industry. Genomics has the potential to impact all aspects of the livestock industry, including central performance testing. However, the building of a reference population large enough to yield meaningful genomic estimated breeding value (GEBV) takes time. The future of central performance test remains unknown.
Evidence for complex order parameter in La_{1.83}Sr_{0.17}CuO_4
Creators: name: Khasanov, R.
name: Shengelaya, A.
name: Maisuradze, A.
name: La Mattina, F.
name: Bussmann-Holder, A.
name: Keller, H.
name: Müller, K. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The in-plane magnetic field penetration depth (λ_{ab}) in single-crystal La_{1.83}Sr_{0.17}CuO_4 was investigated by means of the muon-spin rotation (\muSR) technique. The temperature dependence of λ^{-2}_{ab} has an inflection point around 10-15K, suggesting the presence of two superconducting gaps: a large gap (Δ_1^d) with d-wave and a small gap (Δ_2^s) with s-wave symmetry. The zero-temperature values of the gaps at μ_0H=0.02T were found to be Δ_1^d(0)=8.2(2)meV and Δ_2^s(0)=1.57(8)meV.
description: 5 pages, 3 figures
Hologene evolution of the changuinola peat deposit, Panama: sedimentology of a marine-influenced tropical peat deposit on a tectonically active coat
Creators: name: Phillips, Stephen
Publisher: name: University of British Columbia
Year: 2009

description: The evolution and structure of a large peat deposit on the Caribbean coast of western Panama, Central America is evaluated as a possible analogue for the deposition of low-ash, low sulphur coals. Effects of earthquake-driven subsidence events on the peat and the peat-forming vegetation are investigated, and implications of tectonic subsidence on the evolution of this deposit and on the currently developing model of coastal tropical coal deposition are described. The deposit is approximately 80 km² in extent, averages 6.5 m in thickness, and occupies the width of the narrow coastal plain between the Talamanca Cordillera and barrier beach on a seismically active part of the Caribbean coast. Based on vegetation zonation, topography and hydrology, the modern Changuinola mire complex can be divided into a raised, concentrically zoned, ombrotrophic western section, and a dissected and partially rheotrophic eastern section. Differing hydrological regimes of these two sections are reflected in the physical and chemical stratigraphy of the peat. In the western section, a vertical succession of peat types, highly humified at the base and margins, and more fibric in the upper central part, is the result of internal hydrological boundaries, created by density and permeability variations in the peat. The mire is insulated from marine and fluvial influences by topography and hydrology, and displays no evidence of fluctuating sea level. Coal formed in such an environment would be low in sulphur and ash, dull and massive at the base and margins, and finely banded in the upper central part. The eastern section of the mire is in part rheotrophic, with a complex mosaic of vegetation types, and is segmented into distinct drainage areas by tidal blackwater creek channels. Effects of this marine influence are localized to the bay and channel margins. Coals formed in this environment would have large variations in sulphur over distances of a few metres laterally, and a few centimetres vertically. Earthquake-driven coastal subsidence is greatest in the southeast, and has lead to drowning of the deposit. Subsidence events raise the level in the blackwater creeks, moving the front of marine influence to the northwest (inland), and leading to the replacement of freshwater vegetation with mangroves. The degree of penetration of marine waters remains restricted, however, to marginal peats. An increase in the scale of subsidence events may overcome the response capability of the mangroves and lead to disruption of internal hydrological boundaries and ultimate deflation and drowning of the mire.
A crystallographic phase transition within the magnetically ordered state of Ce_2Fe_17
Creators: name: Kreyssig, A.
name: Chang, S.
name: Janssen, Y.
name: Kim, J. -W.
name: Nandi, S.
name: Yan, J. Q.
name: Tan, L.
name: McQueeney, R. J.
name: Canfield, P. C.
name: Goldman, A. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: X-ray diffraction experiments were performed on polycrystalline and single-crystal specimens of Ce$_{2}$Fe$_{17}$ at temperatures between 10 K and 300 K. Below $T_{\mathrm{t}}$ = 118$\pm$2 K, additional weak superstructure reflections were observed in the antiferromagnetically ordered state. The superstructure can be described by a doubling of the chemical unit cell along the $\mathbf{c}$ direction in hexagonal notation with the same space group $R \bar{3} m$ as the room-temperature structure. The additional antiferromagnetic satellite reflections observed in earlier neutron diffraction experiments can be conclusively related to the appearance of this superstructure.
description: 8 pages, figures, submitted for publication in Phys. Rev. B
Suitable Breed and Animal Selection For Production Efficiency
Creators: name: Whitley, Niki
name: Whitley, Niki
Publisher: name: Unknown
Year: 2020
Subjects: subject: Livestock Production/Industries
subject: Production Economics
subject: Suitable Breed
subject: Animal Selection
subject: Production Efficiency

description: Several goat breeds are available in the U.S. Selection of the breed should consider farm goals, production systems, markets and resources. Animal selection for breeding stock production and marketing needs to focus on breed characteristics, animal conformation, show winnings and animal pedigrees. Establishing at least one consistent market to include in a business/marketing plan that results in farm profitability prior to animal purchase is critical. After determining breed, animal selection will be critical, including choosing sellers, productive males and females with performance records, show animals, and animals with parasite resistance. For many farms, purchasing healthy, productive animals from sellers raising animals in a similar manner and environment as the buyer helps ensure animal production efficiency and thus farm profitability. Breed and animal selection research should start before investments are made in a farm to help support productivity and profitability and should consider goals, production system, markets and resources.
Η προστασία και η χρήση των διεθνών υδατικών πόρων στην Σύμβαση των Ηνωμένων Εθνών για το Δίκαιο των χρήσεων των διεθνών υδατορευμάτων πλην εκείνων που αφορούν τη ναυσιπλοΐα (1997):
Creators: name: Ιωάννου, Αγγελος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Διεθνές υδατόρευμα
Δίκαιο διεθνών υδατορευμάτων
Διεθνής Σύμβαση Η.Ε
International watercourses
Law of international watercourses
UN International Convention

description: Σκοπός της μεταπτυχιακής εργασίας ήταν η εξέταση του δικαίου που αφορά την προστασία και τη χρήση των διεθνών υδατικών πόρων μέσα από την σχετική Σύμβαση των Ηνωμένων Εθνών για το Δίκαιο των χρήσεων των διεθνών υδατορευμάτων πλην εκείνων που αφορούν τη ναυσιπλοΐα του 1997. Μέσα από την ανάλυση της Σύμβασης καταγράφονται οι βασικοί κανόνες που διέπουν τα διεθνή υδατορεύματα, ποιοι από αυτούς έχουν αποκτήσει εθιμική ισχύ, καθώς και η σχετική νομολογία του Διεθνούς Δικαστηρίου της Χάγης.
description: The aim of the thesis was to examine the law on the protection and use of international water resources through the United Nations Convention on the Law of the non-navigational uses of international watercourses (1997). Through the analysis of the Convention the basic rules governing international watercourses (and especially the ones that have become customary law) are presented. The relevant jurisprudence of the ICJ concerning international watercourses is presented too.
How periodic driving stabilises and destabilises Anderson localisation on random trees
Creators: name: Roy, Sthitadhi
name: Moessner, Roderich
name: Lazarides, Achilleas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by the link between Anderson localisation on high-dimensional graphs and many-body localisation, we study the effect of periodic driving on Anderson localisation on random trees. The time dependence is eliminated in favour of an extra dimension, resulting in an extended graph wherein the disorder is correlated along the new dimension. The extra dimension increases the number of paths between any two sites and allows for interference between their amplitudes. We study the localisation problem within the forward scattering approximation (FSA) which we adapt to this extended graph. At low frequency, this favours delocalisation as the availability of a large number of extra paths dominates. By contrast, at high frequency, it stabilises localisation compared to the static system. These lead to a regime of re-entrant localisation in the phase diagram. Analysing the statistics of path amplitudes within the FSA, we provide a detailed theoretical picture of the physical mechanisms governing the phase diagram.
description: 6 pages, 3 figures + Supplmentary Material (2 pages, 1 figure)
Modeling The Growth Of Listeria Monocytogenes In Soft Goat's Cheese "Jben" Under Various Storage Temperatures
Creators: name: Boussif, Kaoutar
name: Elidrissi, Ahmed
name: Elmoslih, Abdelkhaleq
name: Ezzaky, Youssef
name: Zanzan, Mariem
name: Achemchem, Fouad
Publisher: name: Zenodo
Year: 2024
Subjects: Soft goat cheese; L. monocytogenes; Predictive microbiology

description: Presented as Oral Presentation: EU PRIMA Online Seesion; and in Book of Abstracts of 16th AgroStat Conference (AgroStat 2024). Bragança, Portugal (3rd-6th September 2024).
Towards Noncommutative Fuzzy QED
Creators: name: Delgadillo-Blando, Rodrigo
name: Ydri, Badis
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study in one-loop perturbation theory noncommutative fuzzy quenched QED_4. We write down the effective action on fuzzy S**2 x S**2 and show the existence of a gauge-invariant UV-IR mixing in the model in the large N planar limit. We also give a derivation of the beta function and comment on the limit of large mass of the normal scalar fields. We also discuss topology change in this 4 fuzzy dimensions arising from the interaction of fields (matrices) with spacetime through its noncommutativity.
description: 33 pages
Η επίδραση της φιλοσοφίας του Μάρκετινγκ στην απόδοση των Ελληνικών Μουσείων:
Creators: name: Κώστογλου, Ειρήνη Ηλία
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: subject: Μάρκετινγκ
subject: Μουσεία
subject: Απόδοση
subject: Marketing
subject: FOS: Economics and business
subject: Museums
subject: Performance

description: Ο σημαντικός ρόλος που διαδραματίζουν τα μουσεία στον ορισμό, τη διατήρηση και την παρουσίαση του πολιτισμού, συμβάλλει στην καθιέρωση τους ως πολιτισμικού και ψυχαγωγικού θεσμού, ο οποίος βρίσκεται στην υπηρεσία της κοινωνίας. Ωστόσο, σε αντίθεση με τον παραπάνω ορισμό των μουσείων ως δημόσια ιδρύματα, τα οποία είναι ανοιχτά και προσβάσιμα στο ευρύ κοινό, τα μουσεία έρχονται αντιμέτωπα με την πρόκληση της προσέλκυσης και διατήρησης του υπάρχοντος κοινού τους. Αυτή η πρόκληση είναι ιδιαίτερα αισθητή στην Ελλάδα, όπου αρκετά μουσεία αγωνίζονται έντονα προκειμένου να επιτύχουν το ελάχιστα αποδεκτό επίπεδο επισκεψιμότητας. Υπό αυτήν την σκοπιά, ολοένα και περισσότερο αναγνωρίζεται ο ρόλος της φιλοσοφίας του μάρκετινγκ στην προσφορά σημαντικότατων ωφελειών στα μουσεία για την επίτευξη των στόχων τους. Ωστόσο, η υπάρχουσα βιβλιογραφία του στρατηγικού μάρκετινγκ των μουσείων παραμένει ανεπαρκής. Συνεπώς, σκοπός της παρούσας έρευνας είναι η διερεύνηση της επίδρασης των τεσσάρων σημαντικότερων συνιστωσών του μάρκετινγκ, και συγκεκριμένα του προσανατολισμού στην αγορά, του προσανατολισμού στην επωνυμία, του προσανατολισμού στην παροχή υπηρεσίας και της καινοτομίας στην απόδοση των μουσείων. Βασιζόμενη σε αξιόπιστα και έγκυρα εμπειρικά δεδομένα, η παρούσα έρευνα ευελπιστεί να προσφέρει κατευθυντήριες γραμμές στις διοικήσεις των μουσείων, στους επιμελητές των εκθέσεων αλλά και στους φορείς χάραξης πολιτικής σχετικά με την ενίσχυση της απόδοσης τους διαμέσου της υιοθέτησης της φιλοσοφίας του μάρκετινγκ.
description: Museums play a vital role in the world civilization in terms of education, heritage preservation and culture. However, the museum sector nowadays is faced with a serious challenge to maintain its audience. This challenge is particularly severe for Greek museums that are struggling the last years to attain the necessary level of visitation. In this vein, it is increasingly acknowledged that the marketing philosophy, if properly adopted and implemented, can provide important benefits to museums in their effort to achieve their goals. The existing literature on marketing strategy in the museum context is scarce though. Therefore, the proposed study aims at investigating the effect of four key aspects of marketing, namely market orientation, brand orientation, service orientation and innovation on museum performance. Based on strong empirical evidence, specific guidelines will be offered to curators and relevant policy makers regarding the way museum performance can be enhanced through a consistent adoption of the marketing philosophy.