cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Renormalization group analysis of nuclear current operators
Creators: name: Nakamura, Satoshi X.
name: Ando, Shung-ichi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A Wilsonian renormalization group (WRG) equation for nuclear current operators in two-nucleon systems is derived. Nuclear current operators relevant to low-energy Gamow-Teller transitions are analyzed using the WRG equation. We employ the axial two-body current operators from phenomenological models and heavy-baryon chiral perturbation theory, which are quite different from one another in describing small scale physics. After reducing the model space of the operators using the WRG equation, we find that there still remains a significant model dependence at Λ= 200 MeV, where Λis the sharp cutoff specifying the size of the model space. A model independent effective current operator is found at a rather small cutoff value, Λ= 70 MeV. By simulating the effective current operator at Λ=70 MeV, we obtain a current operator based on a pionless theory, thereby arguing an equivalence relation between nuclear current operators of phenomenological models and those of effective field theories.
description: 26 pages, 11 figures
On the Distribution of the Domination Number of a New Family of Parametrized Random Digraphs
Creators: name: Ceyhan, E.
name: Priebe, C. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We derive the asymptotic distribution of the domination number of a new family of random digraph called proximity catch digraph (PCD), which has application to statistical testing of spatial point patterns and to pattern recognition. The PCD we use is a parametrized digraph based on two sets of points on the plane, where sample size and locations of the elements of one is held fixed, while the sample size of the other whose elements are randomly distributed over a region of interest goes to infinity. PCDs are constructed based on the relative allocation of the random set of points with respect to the Delaunay triangulation of the other set whose size and locations are fixed. We introduce various auxiliary tools and concepts for the derivation of the asymptotic distribution. We investigate these concepts in one Delaunay triangle on the plane, and then extend them to the multiple triangle case. The methods are illustrated for planar data, but are applicable in higher dimensions also.
description: 24 pages, 14 figures
Evaluation of Logistic Regression Applied to Respondent-Driven Samples: Simulated and Real Data
Creators: name: Sperandei, Sandro
name: Bastos, Leonardo S.
name: Ribeiro-Alves, Marcelo
name: Reis, Arianne
name: Bastos, Francisco I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Objective: To investigate the impact of different logistic regression estimators applied to RDS samples obtained by simulation and real data. Methods: Four simulated populations were created combining different connectivity models, levels of clusterization and infection processes. Each subject in the population received two attributes, only one of them related to the infection process. From each population, RDS samples with different sizes were obtained. Similarly, RDS samples were obtained from a real-world dataset. Three logistic regression estimators were applied to assess the association between the attributes and the infection status, and subsequently the observed coverage of each was measured. Results: The type of connectivity had more impact on estimators performance than the clusterization level. In simulated datasets, unweighted logistic regression estimators emerged as the best option, although all estimators showed a fairly good performance. In the real dataset, the performance of weighted estimators presented some instabilities, making them a risky option. Conclusion: An unweighted logistic regression estimator is a reliable option to be applied to RDS samples, with similar performance to random samples and, therefore, should be the preferred option.
description: 24 pages, 8 figures, 1 table
Investigation of driver selection policies in main-memory multi-way joins:
Creators: name: Βαλσοματζής, Εμμανουήλ Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Ροές δεδομένων
Τελεστής πολλαπλών ενώσεων
Κύρια μνήμη
Streams
Multi-way join
Main memory

description: Σκοπός της διπλωματικής ήταν η μελέτη πολιτικών επιλογής οδηγού για συνδέσεις πολλαπλών διαδρομών σε ροές δεδομένων στην κύρια μνήμη. Η επεξεργασία ερωτημάτων ροών δεδομένων διαθέτει ένα ιδιαίτερα ευρύ φάσμα εφαρ- μογών. Παρατηρείται στην επεξεργασία δεδομένων προερχόμενα από αισθητήρες, από το διαδίκτυο καθώς και από την παρακολούθηση χρηματιστηριακών δοσολ- ηψιών σε τρέχοντα χρόνο. Επίσης έχει εφαρμογές στην επεξεργασία δεδομένων του ιστορικού των χρηστών που φιλοξενείται σε υπολογιστές - εξυπηρετητές αλλά επιπλέον και σε επιστημονικές προσομοιώσεις. Η διπλωματκή επικεντρώνεται σε ερωτήματα πολλαπλών διαδρομών για ροές δεδομένων, τα οποία επεξεργάζονται με τη βοήθεια ενός πολλαπλού τελεστή σύνδεσης. Πιο συγκεκριμένα, προτείνουμε μία νέα παραλλαγή του MJoin τελεστή με εφαρμογή στην κύρια μνήμη, ο οποίος επεξεργάζεται τα δεδομένα εισόδου σε μικρά σύνολα, με σκοπό την βελτίωση της αποτελεσματικότητας της κεντρικής μονάδας επεξεργασίας του υπολογιστή. Επίσης ο τελεστής ελέγχει ρητά τη σειρά εκτέλεσης της επεξεργασίας των δεδομένων χωρίς να περιορίζεται από τον χρόνο άφιξης αυτών, όπως οι μέχρι τώρα καλύτερα εφαρ- μοζόμενες τεχνικές. Επιπλέον προτείνουμε πολιτικές για την επιλογή της σειράς εκτέλεσης και εξετάζουμε τα πλεονεκτήματα τους μέσω μίας εκτεταμένης πειρα- ματικής αξιολόγησης.
description: Stream query processing has a particularly broad range of applications from sensor data processing and internet traffic analysis to runtime monitoring of stock market and server logs, and scientific simulations. This dissertation focuses on multi-way join queries over streamed data, which are processed with the help of a n-ary join. More specifically, we propose a novel main-memory variant of the influential MJoin operator, which processes input data in batches with a view to improving the CPU efficiency, and explicitly controls the order of execution within each batch without being restricted by the time of input arrival, as current state-of-the-art solutions do. We also propose policies for selecting the execution order, and we examine their benefits through a thorough experimental evaluation.
Agricultural and Home Economics Extension in the United States: A Selected List of References
Creators: name: Feldkamp, Cora L.
name: Feldkamp, Cora L.
Publisher: name: Unknown
Year: 1928
Subjects: Teaching/Communication/Extension/Profession

description: Excerpt from the Preface: Agricultural and hone economics extension work as conducted under the Smith-Lever Act has been in operation since 1914. In the meantime, numerous publications on this method of teaching have been issued. The accompanying list, compiled by Cora L. Feldkamp, Librarian of the Office of Experiment Stations, is an attempt to meet an increasing need for a convenient list of references on the subject. In the compilation of the list it has been the aim of the compiler to include references that would aid in tracing the development of extension work. The references on farmers’ institutes include only the more important ones, and the references on farm bureaus refer to the county-agent work as conducted under the Smith-Lever Act.
Analysis of the vertices $ρNN$, $ρΣΣ$ and $ρΞΞ$ with light-cone QCD sum rules
Creators: name: Wang, Zhi-Gang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this article, we calculate the strong coupling constants of the $ρNN$, $ρΣΣ$ and $ρΞΞ$ in the framework of the light-cone QCD sum rules approach. The strong coupling constants of the meson-baryon-baryon are the fundamental parameters in the one-boson exchange model which describes the baryon-baryon interactions successfully. The numerical values are in agreement with the existing calculations in part. The electric and magnetic $F/(F+D)$ ratios deviate from the prediction of the vector meson dominance theory, the SU(3) symmetry breaking effects are very large.
description: 19 pages, 6 figures, revised version, add more discussions(Correct writing errors)
Research-based practices in the teaching of spelling
Creators: name: Asher, Waltraud Maria
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to (a) compile a list of research-supported teaching techniques, (b) ascertain which postulates a representative sample of elementary teachers used to teach spelling and (c) determine to what degree those procedures were used in those classrooms. The research and literature pertaining to the teaching of spelling was reviewed and summarized. From these summaries belief statements and procedural statements were developed and used as the basis for a survey. This survey was distributed to elementary teachers in a school district in suburban Vancouver, B.C. Of the 298 eligible teachers, 199 completed the survey. The results were tabulated and charts and graphs were created to ease the analysis of the data. It was found that much confusion surrounding the teaching of spelling existed among this representative sample of elementary teachers. Often belief statements did not match indicated classroom practices or vice versa. It is recommended that an efficient way be found by this school district to convey to its teachers effective, research-based practices in the teaching of spelling.
Donut: measuring optical aberrations from a single extra-focal image
Creators: name: Tokovinin, A.
name: Heathcote, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a practical method to calculate Zernike aberrations from analysis of a single long-exposure defocused stellar image. It consists in fitting the aberration coefficients and seeing blur directly to a realistic image binned into detector pixels. This "donut" method is different from curvature sensing in that it does not make the usual approximation of linearity. We calculate the sensitivity of this technique to detector and photon noise and determine optimal parameters for some representative cases. Aliasing of high-order un-modeled aberrations is evaluated and shown to be similar to a low-order Shack-Hartmann sensor. The method has been tested with real data from the SOAR and Blanco 4m telescopes.
description: 13 pages, 9 figures. Accepted at PASP
Optimal Manipulation Of Correlations And Temperature In Quantum Thermodynamics
Creators: name: Clivaz, Fabien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This thesis is devoted to studying two tasks: refrigeration and the creation of correlations. In the refrigeration part, two different paradigms of cooling, namely coherent and incoherent, are defined. The connection that these paradigms have with other existing refrigeration techniques such as heat bath algorithmic cooling (HBAC), the resource theoretic approach to quantum thermodynamics, and autonomous cooling is then made. Each paradigm is then investigated on its own. This in particular allows for the derivation of a general and attainable bound. The bound is striking in its simplicity: it depends on a single parameter of the environment/machine used to cool the system of interest. The creation of correlations part is devoted to the quantitative study of how much correlations can be created for a given amount of energy. After having precisely formulated the problem of interest, we solve it for arbitrary finite dimensional bipartite systems for vanishing background temperatures. For non-vanishing background temperature the symmetry of the problem breaks down, making it much harder to tackle. When both systems are copies of each other, enough symmetry is restored to formulate an upper bound valid for all (finite) dimensional systems and prove its attainability for dimension 3 and 4. We furthermore conjecture, as well as show evidence for, the bound to be attainable in any dimension.
description: PhD thesis, 135 pages
Consistency of the $πΔ$ interaction in chiral perturbation theory
Creators: name: Wies, N.
name: Gegelia, J.
name: Scherer, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We analyze the constraint structure of a spin-3/2 particle interacting with a pseudoscalar. Requiring the self consistency of the considered effective field theory imposes restrictions on the possible interaction terms. In the present case we derive two constraints among the three lowest-order $πΔ$ interaction terms. From these constraints we find that the total Lagrangian is invariant under the so-called point transformation. On the other hand, demanding the invariance under the point transformation alone is less stringent and produces only classes of relations among the coupling constants.
description: 14 pages, no figures, REVTeX 4
Turbulence Time Series Data Hole Filling using Karhunen-Loeve and ARIMA methods
Creators: name: Chang, M. P. J. L.
name: Nazari, H.
name: Font, C. O.
name: Gilbreath, G. C.
name: Oh, E
Publisher: name: arXiv
Year: 2007
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Measurements of optical turbulence time series data using unattended instruments over long time intervals inevitably lead to data drop-outs or degraded signals. We present a comparison of methods using both Principal Component Analysis, which is also known as the Karhunen--Loeve decomposition, and ARIMA that seek to correct for these event-induced and mechanically-induced signal drop-outs and degradations. We report on the quality of the correction by examining the Intrinsic Mode Functions generated by Empirical Mode Decomposition. The data studied are optical turbulence parameter time series from a commercial long path length optical anemometer/scintillometer, measured over several hundred metres in outdoor environments.
description: 8 pages, 9 figures, submitted to ICOLAD 2007, City University, London, UK
Superluminal dispersion relations and the Unruh effect
Creators: name: Rinaldi, Massimiliano
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of quantum gravity phenomenology, we study the Unruh effect in the presence of superluminal dispersion relations. In particular, we estimate the response function and the probability rate for an accelerated detector coupled to a massless scalar field, whose dispersion relation becomes essentially quadratic beyond a threshold momentum $k_p$. By means of perturbative analysis, we show that superluminal dispersion induces a correction to the Planckian spectrum, which tends to vanish as $k_p$ increases.
description: Final discussion expanded, references added. Version accepted for publication in Phys Rev D
Πειραματική διερεύνηση της φωνολογικής ομοιότητας σε μορφολογικά όρια:
Creators: name: Μαρκόπουλος, Γεώργιος Χαράλαμπου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: απλολογία
επανάληψη
μεσοδιάστημα
haplology
echoing
interval

description: Η εργασία αυτή έχει ως στόχο τη διερεύνηση, μέσω πειραματικών διαδικασιών, των φαινομένων που παρατηρούνται σε περιπτώσεις φωνολογικής ομοιότητας μεταξύ δύο μορφολογικών ορίων. Πιο συγκεκριμένα, στο πλαίσιο της παρούσας έρευνας εξετάζουμε τους ανομοιωτικούς και επαναληπτικούς μηχανισμούς που εφαρμόζονται σε μορφολογικά όρια, εστιάζοντας στις δύο βασικές μορφοφωνολογικές διαδικασίες για κάθε κατηγορία, στην απλολογία (haplology) όσον αφορά την αποφυγή της ομοιότητας και στον αναδιπλασιασμό (reduplication) όσον αφορά τη δημιουργία επανάληψης. Η εξέταση αφορά τόσο την ανίχνευση αυτών των μηχανισμών σε γλωσσικά παραδείγματα όσο και την πειραματική διερεύνηση της αντιπροσώπευσής τους στην εσωτερική γραμματική (internal grammar) των φυσικών ομιλητών/-τριών της Ελληνικής μέσα από ένα πείραμα προφορικής εκμαίευσης και ένα πείραμα πρόσληψης. Με βάση τα γλωσσικά και πειραματικά δεδομένα, καταλήγουμε στο συμπέρασμα ότι η απλολογία αποτελεί έναν αντιληπτικό μηχανισμό ο οποίος έχει κωδικοποιηθεί ως –μη δυναμικός– φωνολογικός κανόνας στην εσωτερική γραμματική των ομιλητών/-τριών, ενώ η δημιουργία επαναληπτικών δομών συνιστά μια αντιληπτική στρατηγική, η οποία δεν έχει αποτυπωθεί ως κανόνας στο γραμματικό σύστημα της Ελληνικής. Τέλος, υποστηρίζεται η ύπαρξη του μεσοδιαστήματος (interval), μιας προσωδιακής κατηγορίας που έχει μεν εντοπιστεί στη βιβλιογραφία αλλά δεν έχει διερευνηθεί διεξοδικά, και η οποία φάνηκε, μέσα από τα πειραματικά δεδομένα, ότι διαδραματίζει κεντρικό ρόλο στην εμφάνιση τόσο των ανομοιωτικών όσο και των επαναληπτικών μηχανισμών.
description: The aim of this thesis is the experimental investigation of phenomena triggered by phonological identity at morphological boundaries. More specifically, we examine the dissimilatory and repetitive mechanisms that emerge at morphological boundaries by focusing on the two basic morphophonological processes for each category: haplology (for identity avoidance) and reduplication (for repetition). In this framework, we explore the presence of these mechanisms in actual language and we investigate how they are encoded in the internal grammar of the Greek speakers via two experimental procedures (a production experiment and a perception one). Our findings suggest that haplology is a perceptual mechanism which has been encoded as a latent phonological rule in the internal grammar of the Greek speakers and echoing (i.e. reduplication) is a recuperation strategy that has not infiltrated into the Greek grammar. Finally, we provide evidence for the existence of the interval, a prosodic unit that, albeit attested in bibliography, has not yet been decsribed in detail, and which has borne out through our experimental results to play an important role in the emergence of both dissimilatory and repetitive procedures.
Accelerating cosmologies tested by distance measures
Creators: name: Barger, V.
name: Gao, Y.
name: Marfatia, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We test if the latest Gold set of 182 SNIa or the combined "Platinum" set of 192 SNIa from the ESSENCE and Gold sets, in conjunction with the CMB shift parameter show a preference between the LambdaCDM model, three wCDM models, and the DGP model of modified gravity as an explanation for the current accelerating phase of the universe's expansion. We consider flat wCDM models with an equation of state w(a) that is (i) constant with scale factor $a$, (ii) varies as w(a)=w_0+w_a(1-a) for redshifts probed by supernovae but is fixed at -1 at earlier epochs and (iii) varies as w_0+w_a(1-a) since recombination. We find that all five models explain the data with comparable success.
description: 15 pages, 7 figures, 1 table. New ESSENCE SN data included
Distribution amplitudes and decay constants for $(π,K,ρ,K^*)$ mesons in light-front quark model
Creators: name: Choi, Ho-Meoyng
name: Ji, Chueng-Ryong
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a calculation of the quark distribution amplitudes(DAs), the Gegenbauer moments, and decay constants for $π,ρ,K$ and $K^*$ mesons using the light-front quark model. While the quark DA for $π$ is somewhat broader than the asymptotic one, that for $ρ$ meson is very close to the asymptotic one. The quark DAs for $K$ and $K^*$ show asymmetric form due to the flavor SU(3)-symmetry breaking effect. The decay constants for the transversely polarized $ρ$ and $K^*$ mesons($f^T_ρ$ and $f^T_{K^*}$) as well as the longitudinally polarized ones($f_ρ$ and $f_{K^*}$) are also obtained. Our averaged values for $f^T_V/f_V$, i.e. $(f^T_ρ/f_ρ)_{\rm av}=0.78$ and $(f^T_{K^*}/f_{K^*})_{\rm av}=0.84$, are found to be consistent with other model predictions. Especially, our results for the decay constants are in a good agreement with the SU(6) symmetry relation, $f^T_{ρ(K^*)}=(f_{π(K)}+f_{ρ(K^*)})/2$.
description: 12 pages, 6figures
title: Herbert List als Industriefotograf. Die Ausstellung „Licht über Hamborn“ in Duisburg
Creators: name: Füßl, Wilhelm
Publisher: name: ZZF - Centre for Contemporary History: Visual History
Year: 2014

description: Als Industriefotograf ist uns Herbert List (1903-1975) praktisch nicht geläufig. Wir kennen seine hervorragenden Porträtfotografien, so von den Malern Chagall, Braque, Miró und Picasso, seine journalistischen und künstlerischen Arbeiten wie „Licht über Hellas“ und viele Aufnahmen für die Bildagentur „Magnum“. Industrieaufträge im engeren Sinne sind nur für die Phoenix-Gummiwerke in Hamburg und die August Thyssen-Hütte (ATH) nachgewiesen. In vier Kampagnen hat List 1954 bis 1959 in Duisburg-Hamborn dieses Werk fotografiert. Jetzt hat das ThyssenKrupp Konzernarchiv diesen exzeptionellen Fundus wiederentdeckt und zeigt ihn bis 31. Juli 2014 in einer Ausstellung im Foyer der Hauptverwaltung von ThyssenKrupp Steel Europe in Duisburg.
A new parameterized entanglement monotone
Creators: name: Yang, Xue
name: Luo, Ming-Xing
name: Yang, Yan-Han
name: Fei, Shao-Ming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement concurrence has been widely used for featuring entanglement in quantum experiments. As an entanglement monotone it is related to specific quantum Tsallis entropy. Our goal in this paper is to propose a new parameterized bipartite entanglement monotone which is named as $q$-concurrence inspired by general Tsallis entropy. We derive an analytical lower bound for the $q$-concurrence of any bipartite quantum entanglement state by employing positive partial transposition criterion and realignment criterion, which shows an interesting relationship to the strong separability criteria. The new entanglement monotone is used to characterize bipartite isotropic states. Finally, we provide a computational method to estimate the $q$-concurrence for any entanglement by superposing two bipartite pure states. It shows that the superposition operations can at most increase one ebit for the $q$-concurrence in the case that the two states being superposed are bi-orthogonal or one-sided orthogonal. These results reveal a series of new phenomena about the entanglement, which may be interesting in quantum communication and quantum information processing.
description: 15 pages, 4 figures. Comments welcome!
Electronic Thesis and Disserations in Acquisitions (Presentation Slides)
Creators: name: Flinchbaugh, Michelle
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Library Acquisitions
Digital Collections
Electronic Theses and Disserations
Albin O. Kuhn Library & Gallery

description: Presentation given at the 2010 USMAI (University System of Maryland and Affiliated Institutions) ASTG (Acquisitions Serials Task Group) Forum
Spectroscopic properties of $Δ$ Baryons
Creators: name: Menapara, Chandni
name: Shah, Zalak
name: Rai, Ajay Kumar
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The resonance state of $Δ$ baryon existing in four isospin ($I=\frac{3}{2}$) states, has been studied using Hypercentral Constituent Quark Model (hCQM) with a simple linear potential with added first order correction. The calculated data range for 1S-5S, 1P-5P, 1D-4D and 1F-2F with possible spin-parity assignments of all the states. The magnetic moments have also been obtained for all four configuration. The $Nπ$ decay channel width has been calculated for few states. The linear nature of the data has been verified through Regge trajectories.
description: Accepted in Chinese Physics C
Diagnosing Circumburst Environment with Multiband Gamma-Ray Burst Radio Afterglows
Creators: name: Zhang, Bo
name: Liu, Liang-Duan
name: Sun, Tian-Rui
name: Lyu, Fen
name: Wu, Xue-Feng
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It has been widely recognized that gamma-ray burst (GRB) afterglows arise from interactions between GRB outflow and circumburst medium, while their evolution follows the behaviors of relativistic shock waves. Assuming the distribution of circumburst medium follows a general power-law form, that is, $n = A_{\ast} R^{-k}$, where $R$ denotes the distance from the burst, it is obvious that the value of density-distribution index $k$ can affect the behaviors of the afterglow. In this paper, we analyze the temporal and spectral behaviors of GRB radio afterglows with arbitrary $k$-values. In the radio band, a standard GRB afterglow produced by forward shock exhibits a late-time flux peak, and the relative peak fluxes as well as peak times at different frequencies show dependencies on $k$. Thus with multi-band radio peak observations, one can determine the density profile of circumburst medium by comparing the relations between peak flux/time and frequency at each observing band. Also, the effects of trans-relativistic shock waves, as well as jets in afterglows are discussed. By analyzing 31 long and 1 short GRBs with multi-band data of radio afterglows, we find that nearly half of them can be explained with uniform interstellar medium ($k=0$), $\sim 1/5$ can be constrained to exhibiting stellar wind environment ($k=2$), while less than $\sim 1/3$ samples show $0< k< 2$.
description: 26 pages, 9 figures
Η προσταγή (άρθρο 21 Π.Κ.):
Creators: name: Ζαλαμήτσος, Μηνάς Ναούμ
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Προσταγή
Ανώτερος
Ποινικός Κώδικας
Defence
Superior Orders
Penal Code

description: Σκοπός της διπλωματικής εργασίας ήταν η μελέτη και προσεκτική διερεύνηση της διάταξης της προσταγής, του άρθρου 21 ΠΚ. Εξετάστηκε η ιστορική διαδρομή της εν λόγω ρύθμισης από το πρώτο ποινικό νομοθέτημα της νεώτερης Ελλάδας μέχρι και τον Ποινικό Κώδικα που σήμερα βρίσκεται σε ισχύ. Έγινε επίσης αναφορά και συγκριτική προσέγγιση των αντίστοιχων ρυθμίσεων που ισχύουν σε έννομες τάξεις του εξωτερικού καθώς και στα καταστατικά Διεθνών Δικαιοδοτικών Οργάνων. Στη συνέχεια, προχωρήσαμε σε ενδελεχή ανάλυση της διάταξης της προσταγής, εξετάζοντας την νομική της φύση, τα επιμέρους στοιχεία της, τις νόμιμες προϋποθέσεις που απαιτούνται ώστε να εφαρμοστεί, καθώς επίσης και τις ιδιαιτερότητες που εμφανίζει η εφαρμογή της στις βασικότερες κρατικές υπηρεσίες (Ένοπλες Δυνάμεις, Δικαιοσύνη, ΕΛ.ΑΣ., Δημόσιος Τομέας). Έπειτα αναφερθήκαμε στις συνέπειες που έχει η εφαρμογή ή μη της διάταξης της προσταγής. Τέλος, εξετάστηκε η ρύθμιση της προσταγής και από δικαιοπολιτική σκοπιά, με αναφορά των απόψεων που κατά καιρούς έχουν υποστηριχθεί από τους Έλληνες θεωρητικούς του Ποινικού Δικαίου, σχετικά με την δικαιοπολιτική της ορθότητα αλλά και με βελτιωτικές μεταρρυθμίσεις που θα έπρεπε να γίνουν στο μέλλον.
description: The aim of the present thesis was to study and carefully analyze the defence of superior orders, as it is constituted in article 21 of the Hellenic Penal Code. I examined the historical course of this provision, from the first penal law of Greece, to the Penal Code that is today in force. This was followed by a comparative presentation of the relevant provisions that can be found in other countries and in the statutes of International Criminal Tribunals. Next, an in-depth analysis of article 21 took place, examining its legal nature, its constituent elements, the legal conditions that are required in order for it to be applicable, as well as the special nature of its applicability in matters regarding the most important state agencies (Armed Forces, Judicial System, Police, Civil Services). After that, I examined the consequences that stem from the applicability of said article or the lack of it. Finally, I dealt with the provision of the defence of superior orders from a special point of view. That is, the one concerned with a «de lege ferenda» approach, presenting the opinions that have been stated, over the years, by Greek criminal law theorists, regarding its legal standing and also any potential reforms that should be considered and implemented in the future.
A publicação de dados em Humanidades Digitais com FAIR: datasets de pesquisa do projeto MPO compartilhados no Ckan da Unirio
Creators: name: Silva Ribeiro, Cláudio José
name: Tupinambá de Ulhôa, Martha
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão Pecha Kucha I, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
Degeneration of Heegaard genus, a survey
Creators: name: Bachman, David
name: Derby-Talbot, Ryan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M99, 57N10, 57M27

description: We survey known (and unknown) results about the behavior of Heegaard genus of 3-manifolds constructed via various gluings. The constructions we consider are (1) gluing together two 3-manifolds with incompressible boundary, (2) gluing together the boundary components of surface times I, and (3) gluing a handlebody to the boundary of a 3-manifold. We detail those cases in which it is known when the Heegaard genus is less than what is expected after gluing.
description: This is the version published by Geometry & Topology Monographs on 3 December 2007
Οι σχέσεις συνεργασίας των γονέων με τους εκπαιδευτικούς και τους επαγγελματίες της ψυχικής υγείας για την αντιμετώπιση των ψυχοκοινωνικών δυσκολιών των μαθητών με ειδικές μαθησιακές δυσκολίες: μια διερεύνηση της οπτικής των μητέρων
Creators: name: Μπαλδιμτσή, Ελένη Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Συνεργασία
Ψυχοκοινωνικά προβλήματα
Ειδικές μαθησιακές δυσκολίες
Partnership
Psychosocial problems
Specific learning disabilities

description: Ο γενικός και πρωταρχικός στόχος της έρευνας αυτής είναι η διερεύνηση των σχέσεων συνεργασίας των μητέρων με τους εκπαιδευτικούς και τους επαγγελματίες ψυχικής υγείας για την αντιμετώπιση των ψυχοκοινωνικών δυσκολιών των παιδιών με μαθησιακές δυσκολίες. Πιο συγκεκριμένα, η εργασία αυτή αποσκοπούσε στο να εντοπίσει και να καταγράψει τα ποιοτικά εκείνα χαρακτηριστικά που διέπουν την σχέση των μητέρων των παιδιών με ειδικές μαθησιακές δυσκολίες με τους λεγόμενους «ειδικούς». Ακόμη, η έρευνα φιλοδοξούσε να εντοπίσει τυχόν προβλήματα στις σχέσεις γονέων και ειδικών, τα οποία καταγράφονται στην διεθνή βιβλιογραφία. Τα δεδομένα συγκεντρώθηκαν μέσω ημι-δομημένων συνεντεύξεων από έξι μητέρες παιδιών με ειδικές μαθησιακές δυσκολίες, που φοιτούσαν σε δημόσια σχολεία της Κεντρικής Ελλάδας. Τα ευρήματα της έρευνας, όπως αυτά προέκυψαν μέσα από την ανάλυση των συνεντεύξεων των μητέρων, αποκάλυψαν μια σειρά από προβλήματα στις σχέσεις των τελευταίων με τους εκπαιδευτικούς αλλά και με τους επαγγελματίες ψυχικής υγείας στους οποίους κατά καιρούς απευθύνθηκαν προκειμένου να αντιμετωπίσουν τόσο τα μαθησιακά όσο και τα ψυχοκοινωνικά προβλήματα των παιδιών τους. Οι μητέρες έκαναν λόγο για τα προβλήματα στις σχέσεις συνεργασίας με εκπαιδευτικούς και ειδικούς αλλά και για περιορισμένη συμμετοχή στα προγράμματα παρέμβασης.
description: This study aims to investigate the partnership between mothers with teachers and practitioners in dealing with the psychosocial problems of children specific learning disabilities. The study was carried out with a sample of six mothers. The methodology employed consisted of interviewing the mothers (semi-structured).Views were sought from each mother around the quality of partnership between her and teachers or professionals in dealing with the psychosocial problems of children with SLD. The results indicated the problems in the relationship between mothers and professionals. These conclusions are supported by previous research findings presented in the literature review. This study concludes with a discussion of the findings of this study and the implications of that research. The study suggests that, for these particular mothers, their relationships with teachers and professionals are facing a number of problems.
Link between the diversity, heterogeneity and kinetic properties of amorphous ice structures
Creators: name: Koza, Michael Marek
name: Hansen, Thomas
name: May, Roland P.
name: Schober, Helmut
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Based on neutron wide-angle diffraction and small-angle neutron scattering experiments, we show that there is a correlation between the preparational conditions of amorphous ice structures, their microscopic structural properties, the extent of heterogeneities on a mesoscopic spatial scale and the transformation kinetics. There are only two modifications that can be identified as homogeneous disordered structures, namely the very high-density vHDA and the low-density amorphous LDA ice. Structures showing an intermediate static structure factor with respect to vHDA and LDA are heterogeneous phases. This holds independently from their preparation procedure, i.e. either obtained by pressure amorphisation of ice I_h or by heating of vHDA. The degree of heterogeneity can be progressively suppressed when higher pressures and temperatures are applied for the sample preparation. In accordance with the suppressed heterogeneity the maximum of the static structure factor displays a pronounced narrowing of the first strong peak, shifting towards higher Q-numbers. Moreover, the less heterogeneous the obtained structures are the slower is the transformation kinetics from the high--density modifications into LDA. The well known high-density amorphous structure HDA does not constitute any particular state of the amorphous water network. It is formed due to the preparational procedure working in liquid nitrogen as thermal bath, i.e. at about 77 K.
Soft leptogenesis in the inverse seesaw model
Creators: name: Garayoa, J.
name: Gonzalez-Garcia, M. C.
name: Rius, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider leptogenesis induced by soft supersymmetry breaking terms ("soft leptogenesis"), in the context of the inverse seesaw mechanism. In this model there are lepton number (L) conserving and L-violating soft supersymmetry-breaking B-terms involving the singlet sneutrinos which, together with the -- generically small-- L-violating parameter responsible of the neutrino mass, give a small mass splitting between the four singlet sneutrino states of a single generation. In combination with the trilinear soft supersymmetry breaking terms they also provide new CP violating phases needed to generate a lepton asymmetry in the singlet sneutrino decays. We obtain that in this scenario the lepton asymmetry is proportional to the L-conserving soft supersymmetry-breaking B-term, and it is not suppressed by the L-violating parameters. Consequently we find that, as in the standard see-saw case, this mechanism can lead to sucessful leptogenesis only for relatively small value of the relevant soft bilinear coupling. The right-handed neutrino masses can be sufficiently low to elude the gravitino problem. Also the corresponding Yukawa couplings involving the lightest of the right-handed neutrinos are constrained to be \sum |Y_{1k}|^2\lesssim 10^{-7} which generically implies that the neutrino mass spectrum has to be strongly hierarchical.
description: 28 pages, 1 figure; some references added; final version to appear in JHEP
Artefatos do Artigo "Key Performance Indicators in Brazilian Software Development Companies: a Survey"
Creators: name: Alexandre, Mariana
name: OliveiraJr, Edson
name: Carvalho, Ana Paula
name: Colanzi, Thelma
name: Balancieri, Renato
Publisher: name: Zenodo
Year: 2024
Subjects: Performance
Software Management
Key Performance Indicators
KPI
Software Process
Survey

description: Artefatos do Artigo "Key Performance Indicators in Brazilian Software Development Companies: a Survey"

 

Os autores agradecem o apoio do CNPq (processo 404027/2023-7) e da CAPES - Código Financeiro 001. Edson OliveiraJr agradece o apoio do CNPq processo 311503/2022-5.
On quark-lepton complementarity
Creators: name: Gonzalez-Canales, F.
name: Mondragon, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recent measurements of the neutrino solar mixing angle and the Cabibbo angle satisfy the empirical relation theta_{sol} + theta_{C} ~ 45^{o}. This relation suggests the existence of a correlation between the mixing matrices of leptons and quarks, the so called quark-lepton complementarity. Here, we examine the possibility that this correlation originates in the strong hierarchy in the mass spectra of quarks and charged leptons, and the seesaw mechanism that gives mass to the Majorana neutrinos. In a unified treatment of quarks and leptons in which the mass matrices of all fermions have a similar Fritzsch texture, we calculate the mixing matrices V_{CKM} and U_{MNSP} as functions of quark and lepton masses and only two free parameters, in very good agreement with the latest experimental values on masses and mixings. Three essential ingredients to explain the quark-lepton complementarity relation are identified: the strong hierarchy in the mass spectra of quarks and charged leptons, the normal seesaw mechanism and the assumption of maximal CP violation in the lepton sector.
description: 6 pages, to appear in "Particles and fields: Xth Mexican Workshop on Particles and Fields" (Morelia, Mich. Mexico, November 6-12, 2005), Eds. A. Bashir and L. Villasenor, AIP Conference proceedings (2006)
Scanning SQUID characterization of extremely overdoped $La_{2-x}Sr_{x}CuO_{4}$
Creators: name: Herrera, Chloe
name: Franklin, Jacob
name: Božović, Ivan
name: He, Xi
name: Sochnikov, Ilya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Recently, advances in film synthesis methods have enabled a study of extremely overdoped $La_{2-x}Sr_{x}CuO_{4}$. This has revealed a surprising behavior of the superfluid density as a function of doping and temperature, the explanation of which is vividly debated. One popular class of models posits electronic phase separation, where the superconducting phase fraction decreases with doping, while some competing phase (e.g. ferromagnetic) progressively takes over. A problem with this scenario is that all the way up to the dome edge the superconducting transition remains sharp, according to mutual inductance measurements. However, the physically relevant scale is the Pearl penetration depth, $Λ_{P}$, and this technique probes the sample on a length scale $L$ that is much larger than $Λ_{P}$. In the present paper, we use local scanning SQUID measurements that probe the susceptibility of the sample on the scale $L << Λ_{P}$. Our SQUID maps show uniform landscapes of susceptibility and excellent overall agreement of the local penetration depth data with the bulk measurements. These results contribute an important piece to the puzzle of how high-temperature superconductivity vanishes on the overdoped side of the cuprates phase diagram.
description: This work was accepted to Physical Review B
Doped Mott insulator as the origin of heavy Fermion behavior in LiV2O4
Creators: name: Arita, R.
name: Held, K.
name: Lukoyanov, A. V.
name: Anisimov, V. I.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the electronic structure of LiV2O4, for which heavy fermion behavior has been observed in various experiments, by the combination of the local density approximation and dynamical mean field theory. To obtain results at zero temperature, we employ the projective quantum Monte Carlo method as an impurity solver. Our results show that the strongly correlated a1g band is a lightly doped Mott insulator which -at low temperatures- shows a sharp (heavy) quasiparticle peak just above the Fermi level, which is consistent with recent photoemission experiment by Shimoyamada et al. [Phys. Rev. Lett. 96 026403 (2006)].
description: 4 pages, 5 figures
Analysis of the convergence of the degree distribution of contracting random networks towards a Poisson distribution using the relative entropy
Creators: name: Tishby, I.
name: Biham, O.
name: Katzav, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present analytical results for the structural evolution of random networks undergoing contraction processes via generic node deletion scenarios, namely, random deletion, preferential deletion and propagating deletion. Focusing on configuration model networks, which exhibit a given degree distribution $P_0(k)$ and no correlations, we show using a rigorous argument that upon contraction the degree distributions of these networks converge towards a Poisson distribution. To this end, we use the relative entropy $S_t=S[P_t(k) || π(k|\langle K \rangle_t)]$ of the degree distribution $P_t(k)$ of the contracting network at time $t$ with respect to the corresponding Poisson distribution $π(k|\langle K \rangle_t)$ with the same mean degree $\langle K \rangle_t$ as a distance measure between $P_t(k)$ and Poisson. The relative entropy is suitable as a distance measure since it satisfies $S_t \ge 0$ for any degree distribution $P_t(k)$, while equality is obtained only for $P_t(k) = π(k|\langle K \rangle_t)$. We derive an equation for the time derivative $dS_t/dt$ during network contraction and show that the relative entropy decreases monotonically to zero during the contraction process. We thus conclude that the degree distributions of contracting configuration model networks converge towards a Poisson distribution. Since the contracting networks remain uncorrelated, this means that their structures converge towards an Erd{\H o}s-Rényi (ER) graph structure, substantiating earlier results obtained using direct integration of the master equation and computer simulations [I. Tishby, O. Biham and E. Katzav, {\it Phys. Rev. E} {\bf 100}, 032314 (2019)]. We demonstrate the convergence for configuration model networks with degenerate degree distributions (random regular graphs), exponential degree distributions and power-law degree distributions (scale-free networks).
description: 41 pages, 9 figures. arXiv admin note: substantial text overlap with arXiv:2009.02890
Smart Resume Scoring & Recommendations
Creators: name: Gaviya S, Agnes Joshy S
Publisher: name: Zenodo
Year: 2025

description: A well-structured and optimized resume plays a crucial role in today’s competitive job market.Smart Resume Scoring & Recommendations is an AI-powered system designed to assist job seekers byevaluating resumes, providing insights, and suggesting improvements. This system combines resumeanalysis, Power BI visualization, and an intelligent resume builder to help users create high-qualityresumes tailored to industry standards. The system utilizes machine learning (ML) and natural languageprocessing (NLP) to assess resumes based on key parameters, offering structured scoring and detailedfeedback. A major feature is its interactive Power BI visualization, which presents resume strengths andareas for improvement through data-driven analytics. Additionally, it provides personalized courserecommendations and career tips, allowing users to enhance their skills and improve their employability.By automating resume evaluation, this system reduces the limitations of manual assessments and enhancesefficiency. Beyond resume optimization, the platform serves as a comprehensive career development tool,equipping individuals with the insights needed for professional growth.
Coulomb screening and collective excitations in a graphene bilayer
Creators: name: Wang, Xue-Feng
name: Chakraborty, Tapash
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have investigated the Coulomb screening properties and collective excitations in a graphene bilayer. The static screening effect is anisotropic and is much stronger in the undoped graphene bilayer than in a monolayer graphene [1]. The dynamic screening shows the properties of a Dirac gas in the low frequency and that of a Fermi gas in the high frequency. The transition from the Dirac to the Fermi gas is also observed in the plasmon spectrum. Finally, we find that an electron gas in a doped graphene bilayer has quite similar properties as those of a Fermi gas in materials containing two energy valleys.
description: 4 pages, 4 figures