cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ASSESSMENT OF PARTICULATE MATTER IN INDUSTRIAL AREA OF ELEME COMMUNITIES OF RIVERS STATE, NIGER DELTA, NIGERIA
Creators: name: Abubakar, Idris Abubakar (Ph.D.)
Publisher: name: TOP JOURNAL
Year: 2024
Subjects: Particulate matter, Industrial area, Automobile emissions, Eleme community

description: The study assessed levels of Particulate matter in Eleme communities of Rivers State, Nigeria. The work was carried out between 27th September and 24th of November, 2019, using a purposive sampling technique. Data was analysed statistically by Pearson correlation and Chi-square test method. The parameters tested were PM2.5 and PM10. CW-HAT 20 handheld portable counter was used, while meteorological parameters tested were Temperature, Relative Humidity, Wind speed, and direction. The result showed that PM10 and PM2.5 concentrations were 93.40 and 64.30µg/m3 respectively. PM10 was within the NESREA limit of 150µg/m3, while PM2.5 was above NESREA limit of 40.0µg/m3. The elevated values of PM2.5 could be attributed to emissions from industries, vehicles, and soot particles from illegal refining and highway clouds of dust in the area. Akpajo community was identified as the most air polluted community which could be due to proximity to the petrochemical industry, the highway that experiences gridlock, and wind transportation action, While Aleto, where petrochemical industry is located, was identified as the less air polluted community. Particulate matter level increases from September through to November which could be attributed to cessation of rainfall that could have diluted the PM. The study suggests that industries should seek alternative sources of energy, efficient traffic management systems should be instituted, and public enlightenment on the advantages of tree planting to reduce the health effects of PM on the residents of the study area.
The Effect of Body-Worn Cameras on the Adjudication of Citizen Complaints of Police Misconduct
Creators: name: Cubukcu, Suat
name: Sahin, Nusret
name: Tekin, Erdal
name: Topalli, Volkan
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: We use citizen complaint data from the Chicago Police Department and Civilian Office of Police Accountability filed between 2013-2020 to determine the extent to which Body-worn camera (BWC) footage enhances the efficacy of evidence used to formulate a conclusion of responsibility, and whether racial disparities in investigation outcomes would subsequently be reduced. Accordingly, we exploit the staggered deployment of BWCs across 22 Chicago police districts over time to estimate the effect of BWCs on these outcomes. Findings indicate BWCs led to a significant decrease in the dismissal of investigations due to insufficient evidence (“not sustained”) and a significant increase in disciplinary actions against police officers (“sustained” “outcomes”) with sufficient evidence to sanction their misconduct. We further find that disparities in complaints across racial groups for the “unsustained” category faded away with the implementation of BWCs. The article concludes with theoretical and research implications based on the findings.
The mix masters: a tribute to children with a blend of harmony
Creators: name: Silver, Patricia F
Publisher: name: University of British Columbia
Year: 2008

description: Music is a powerful mode of interpreting our complicated worlds. Human beings are gifted with the ability to listen and move and respond to music. As a form of expression, music should pervade the learning environment, thereby enriching the lives of elementary students. This thesis presents an original script to be used as the basis for a one hour school-touring musical production. The intention is for as many elementary students as possible to become exposed to and involved in the experiential joy of singing and producing music through their voices. The production is organized in performance format where children are interactive participants. Twelve numbers comprise the basic structure of the show. These songs include original material as well as traditional numbers with which the students are most likely familiar. Students will also be exposed to a professional calibre of artistic endeavours in the performing arts. Children will be surrounded by quality singing which could challenge learners by arousing interest, giving confidence, encouraging reflection and giving joy. In order to inspire students to strive for excellence in the performing arts and to understand the role that the musical art form plays in their own lives, they should be exposed to professional musical productions. Exposure to a high standard of musical performance may lead to the attainment of personal life-long artistic goals, including the ability to appreciate music and to make music. Led by three professional musicians/actors, students will explore harmony, rhythm, melodic interpretation, genres of music, dynamics of sound, pitch, tempo, form, descants and chants. The overall encouragement to use the singing voice as a source of pleasure and entertainment will be emphasized throughout. The underlying intent is that an inspirational feeling will extend to the classroom where more music will occur.
Carbon Nanotubes as Electrodes for Dielectrophoresis of DNA
Creators: name: Tuukkanen, Sampo
name: Toppari, J. Jussi
name: Kuzyk, Anton
name: Hirviniemi, Lasse
name: Hytonen, Vesa P.
name: Ihalainen, Teemu
name: Torma, Paivi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Dielectrophoresis can potentially be used as an efficient trapping tool in the fabrication of molecular devices. For nanoscale objects, however, the Brownian motion poses a challenge. We show that the use of carbon nanotube electrodes makes it possible to apply relatively low trapping voltages and still achieve high enough field gradients for trapping nanoscale objects, e.g., single molecules. We compare the efficiency and other characteristics of dielectrophoresis between carbon nanotube electrodes and lithographically fabricated metallic electrodes, in the case of trapping nanoscale DNA molecules. The results are analyzed using finite element method simulations and reveal information about the frequency dependent polarizability of DNA.
description: 5 pages with 6 figures
Nonlinear functional models for functional responses in reproducing kernel Hilbert spaces
Creators: name: Lian, Heng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: An extension of reproducing kernel Hilbert space (RKHS) theory provides a new framework for modeling functional regression models with functional responses. The approach only presumes a general nonlinear regression structure as opposed to previously studied linear regression models. Generalized cross-validation (GCV) is proposed for automatic smoothing parameter estimation. The new RKHS estimate is applied to both simulated and real data as illustrations.
Ο σεξουαλικός προσανατολισμός ως παράγοντας διαμόρφωσης της σχολικής εμπειρίας
Creators: name: Ροδοπούλου, Αναστασία Θεοφάνη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Σεξουαλικός προσανατολισμός
Σχολικό κλίμα
Ετεροκανονικότητα
Ομοφοβικός λόγος
ΛΟΑΤΚ+ ταυτότητες
Sexual orientation
School climate
Heteronormativity
Homophobic discourse
LGBTQ+ identities

description: Η παρούσα εργασία καταπιάνεται με τον σεξουαλικό προσανατολισμό στην εκπαίδευση. Στόχος μας είναι να διερευνήσουμε τις εμπειρίες των μη ετεροφυλόφιλων μαθητριών και μαθητών στο ελληνικό σχολείο. Το σχολείο κατέχει, μεταξύ άλλων, ένα ρόλο παραγωγής και αναπαραγωγής έμφυλων και σεξουαλικών ταυτοτήτων. Το προσεγγίζουμε ως οργανισμό της ετεροκανονικής κοινωνίας που εντός του συντηρούνται και διαιωνίζονται ο ετεροσεξισμός και ο ομοφοβικός Λόγος. Η ανάπτυξη της σεξουαλικής ταυτότητας των παιδιών που δεν εμπίπτουν στα ετεροκανονικά πλαίσια συμπεριφορών συναντά δυσκολίες στην Ελλάδα καθώς απουσιάζουν από την εκπαιδευτική πολιτική σχέδια, παρεμβάσεις και πολιτικές που προστατεύουν τα ΛΟΑΤΚ+ άτομα στην εκπαίδευση. Διεξήγαμε μια μελέτη περίπτωσης στην οποία συμμετείχαν ΛΟΑ άτομα που έχουν αποφοιτήσει πρόσφατα από το ελληνικό σχολείο. Τα άτομα που συμμετείχαν ανέφεραν ότι έχουν βιώσει περιστατικά ομοφοβικών διακρίσεων και τόνισαν την αορατότητα των μη ετεροκανονικών ταυτοτήτων στην εκπαίδευση. Από τα δεδομένα προέκυψε ότι οι δυσκολίες που συνάντησαν οι συμμετέχουσες/οντες τις/τους είχαν συνέπειες στη σχολική τους επίδοση και στην συναισθηματική και ψυχική τους υγεία.
description: The present dissertation undertakes sexual orientation in educational settings. Our aim is to study the experiences of non-heterosexual students in Greek school. The schools have a productive and reproductive role of gendered and sexual identities. We see school as an institution of the heteronormative society in which heterosexism and homophobic discourse maintain and perpetuate. The sexual identities’ growth of children who do not conform with the heteronormative behaviors face difficulties as Greece still lacks plans, interventions and policies that protect LGBTQ+ people in education. To better understand this, we conducted a case study with LGB recent graduates from Greek schools. The participants reported experiences of prejudice and homophobic incidents and highlighted the invisibility of the non-heteronormative identities in education. The data showed that participants faced difficulties that had consequences at school outcomes and at their emotional and mental health.
BIBAL- Rede Intermunicipal das Bibliotecas do Algarve
Creators: name: Vargues, Maria Margarida
name: Ferreira, Paula
name: Oliveira, Teresa
Publisher: name: Cadernos BAD
Year: 2021
Subjects: Bibliotecas
Redes de bibliotecas
Cooperação
Algarve-Portugal
027

description: Este artigo apresenta o estudo feito sobre a Rede Intermunicipal das Bibliotecas do Algarve (BIBAL). Para além da introdução, para enquadramento das bibliotecas na região do Algarve, refere-se a sua criação, ou a sua renovação, que ocorreu entre 1991 e 2009, pois algumas não seguiram o modelo da Rede Nacional de Bibliotecas Públicas (RNBP). Assinalam-se as três fases de práticas de cooperação entre as bibliotecas, que culminaram na formalização da rede, através de um Acordo de cooperação subscrito pela Comunidade Intermunicipal do Algarve/AMAL, pela Universidade do Algarve, e pela Direção-Geral do Livro, dos Arquivos e das Bibliotecas (DGLAB). Em seguida, apresentam-se os dados estatísticos que se consideraram mais relevantes e que se basearam nos indicadores estatísticos recolhidos, pela Direção-Geral do Livro, dos Arquivos e das Bibliotecas, na Rede Nacional de Bibliotecas Públicas (RNBP) desta região, para caracterizar os seus utilizadores, os recursos e serviços prestados à população
description: Cadernos BAD, N.º 1-2 (2020)
Universal decoherence induced by an environmental quantum phase transition
Creators: name: Cucchietti, Fernando Martin
name: Fernandez-Vidal, Sonia
name: Paz, Juan Pablo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Decoherence induced by coupling a system with an environment may display universal features. Here we demostrate that when the coupling to the system drives a quantum phase transition in the environment, the temporal decay of quantum coherences in the system is Gaussian with a width independent of the system-environment coupling strength. The existence of this effect opens the way for a new type of quantum simulation algorithm, where a single qubit is used to detect a quantum phase transition. We discuss possible implementations of such algorithm and we relate our results to available data on universal decoherence in NMR echo experiments.
A General Approach to Robust Controller Analysis and Synthesis
Creators: name: Tseng, Shih-Hao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Robust controller synthesis attracts reviving research interest, driven by the rise of learning-based systems where uncertainty and perturbation are ubiquitous. Facing an uncertain situation, a robustly stabilizing controller should maintain stability while operating under a perturbed system deviating from its nominal specification. There have been numerous results for robust controller synthesis in multiple forms and with various goals, including mu-synthesis, robust primal-dual Youla, robust input-output, and robust system level parameterizations. However, their connections with one another are not clear, and we lack a general approach to robust controller analysis and synthesis. To serve this purpose, we derive robust stability conditions for general systems and formulate the general robust controller synthesis problem. The conditions hinge on the realization-stability lemma, a recent analysis tool that unifies existing controller synthesis methods. Not only can the conditions infer a wide range of existing robust results, but they also lead to easier derivations of new ones. Together, we demonstrate the effectiveness of the conditions and provide a unified approach to robust controller analysis and synthesis.
GPU programming for image/video analysis. CUDA Implementation of Fast CNN convolution algorithms
Creators: name: Μπάσια, Παρασκευή Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Συνέλιξη
Μονάδα Επεξεργασίας Γραφικών
Νευρωνικά Δίκτυα
Convolution
GPU (Graphics Processing Unit)
CUDA (Compute Unified Device Architecture)

description: 1D, 2D and multidimensional convolutions are the basic tool in several computer vision tasks such as image/video analysis, object detection and tracking as well as Convolutional Neural Networks (CNNs). The following diploma thesis report implements novel convolution algorithms with minimal multiplicative and additive complexity in CUDA, speeding up convolutions executed on GPUs and compares the performance of the implementation both in terms of time and accuracy to analogous algorithms which are incorporated in existing libraries (cuDNN).
description: Οι μονοδιάστατες, δισδιάστατες και πολυδιάστατες συνελίξεις συνιστούν το βασικό εργαλείο σε ποικίλες εφαρμογές τεχνητής όρασης, όπως ανάλυση εικόνας και video, ανίχνευση και παρακολούθηση αντικειμένων, όπως επίσης και στα Συνελικτικά Νευρωνικά Δίκτυα. Η παρούσα διπλωματική εργασία υλοποιεί καινοτόμους αλγορίθμους συνέλιξης με ελάχιστη υπολογιστική πολυπλοκότητα στον αριθμό των απαιτούμενων πολλαπλασιασμών και προσθέσεων. Η υλοποίηση των αλγορίθμων έγινε με τη χρήση της CUDA, με στόχο την επιτάχυνση που προσφέρει η παράλληλη εκτέλεση ενός αλγορίθμου σε μία πολυπύρηνη μονάδα επεξεργασίας γραφικών (GPU). Οι επιδόσεις των νέων αλγορίθμων σε ακρίβεια και ταχύτητα συγκρίνονται με αυτές αναλόγων κορυφαίων σε επιδόσεις αλγορίθμων που είναι ενσωματωμένοι σε γνωστές βιβλιοθήκες (cuDNN).
Description of longitudinal space charge effects in beams and plasma through dielectric permittivity
Creators: name: Yampolsky, Nikolai
name: Bishofberger, Kip
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We develop a universal framework which allows quickly solve a wide class of problems for longitudinal space charge effects in beams and plasmas in cylindrical geometry. We introduce the longitudinal dielectric permittivity for the beam of charged particles, which describes its collective space charge response. The analyis yields an effective plasma frequency, which depends on the transverse geometry of the system. This dielectric permittivity mirrors the dielectric permittivity of plasma and matches the one dimensional (1D) expression once the transverse size of the beam is large. Several particle species can be included as additive terms describing susceptibility of each specie. The developed approach allows to study stability criteria for collective beam-beam and beam-plasma instabilities for arbitrary transverse distributions in particle densities.
Αυτοματοποιημένη οριοθέτηση χαρτογραφικών εδαφικών μονάδων με χρήση δορυφορικών δεδομένων για την ψηφιακή χαρτογράφηση
Creators: name: Χατζηαντωνίου, Νικόλαος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Απόψεις φιλολόγων
Γλωσσική επίδοση
Μαθησιακές δυσκολίες
Accuracy of teachers' aspects
Language school achievement, low school achievement, underachievement
Learning difficulties

description: Η μέθοδος μη επιβλεπόμενης ταξινόμησης της ψηφιακής χαρτογράφησης εδαφών αξιολογήθηκε με την βοήθεια των χαρτογραφημένων περιοχών στις περιοχές της Ανατολικής Μακεδονίας και της Θράκης. Η μείωση των αρχικών μεταβλητών (δορυφορικών εικόνων και υψομετρικού μοντέλου DEM) με την μέθοδο Principal Component Analysis (PCA), η μέθοδος μη επιβλεπόμενης ταξινόμησης ISODATA, ο γραμμικός συνδυασμός των κύριων συνιστωσών, ο μέσος όρος του γραμμικού συνδυασμού από την κλάση ISODATA, η τμηματοποίηση της εικόνας σε πολύγωνα και η απόδοση των πολυγώνων κατά τάξη πλειοψηφίας της ISODATA ταξινόμησης περιέλαβαν τα βήματα εξαγωγής μοναδικών εδαφικών μονάδων. Οι μεταβλητές εισόδου περιέλαβαν τις δορυφορικές εικόνες MODIS (500m) και Sentinel 2 (30m) και το υψομετρικό μοντέλο (DEM) του δορυφόρου Terra / ASTER (30m) για περιβαλλοντικές μεταβλητές που αντιπροσωπεύουν τους παράγοντες σχηματισμού εδάφους. Τα αποτελέσματα δείχνουν ότι το μοντέλο αυτό κατέγραψε γενικές κατηγορίες εδάφους σε σύγκριση με μια υπάρχουσα εδαφολογική έρευνα. Η μεθοδολογία που ακολουθήθηκε μπορεί να χρησιμοποιηθεί ως ένα αρχικό στάδιο χαρτογράφησης από εδαφολόγους-χαρτογράφους, αντικαθιστώντας στη φυσιογραφική μέθοδο, την αρχική χονδρική χάραξη και οριοθέτηση χαρτογραφικών μονάδων και εν συνεχεία με δειγματοληψία πεδίου να εισαχθούν δεδομένα για πλήρη διαχωρισμό χαρτογραφικών μονάδων.
description: Digital soil mapping unsupervised classification methods were evaluated to aid soil survey of mapped areas in Eastern Macedonia and Thrace. Principal component data reduction, ISODATA classification, Linear combination of principal components, Zonal averaging of linear combination by ISODATA class, Segmentation of the image into polygons and Attribution of polygons by majority ISODATA class comprised steps isolating unique soil-landscape units. Input data included MODIS (500m) and Sentinel 2 (30m) satellite imagery and Terra / Aster (30m) elevation layers for environmental proxy variables representing soil forming factors. Results indicate that this model captured general soil patterns when compared to an existing soil survey. This method demonstrates potential for soil pre-mapping and sampling design efforts for soil survey.
Processo de criação dos arquivos distritais
Creators: name: Janeiro, Jorge
Publisher: name: Cadernos BAD
Year: 2021

description: Este estudo tem como objetivo divulgar, de forma muito sintética e parcial, o complexo e longo processo de criação de arquivos estatais especializados de âmbito distrital em Portugal. Após constatação da impossibilidade de continuar a centralizar a documentação em Lisboa, os arquivos distritais foram a solução encontrada pela República para chamar à sua responsabilidade a proteção, tratamento e disponibilização do património arquivístico do resto do País. Desde logo, a sua natureza de serviços partilhados, aliada à falta de meios do Estado para implementar rapidamente uma rede de arquivos distritais, desembocou num modelo misto em que a criação de cada arquivo dependia, sobretudo, da disponibilização de meios de entidades como municípios, juntas distritais e da Universidade de Coimbra. Contingência que iria condicionar todo o processo de criação dos arquivos distritais até à década de 1980, facilitando nuns casos e dificultando noutros. No estudo que se apresenta são enumeradas as quatro fases da criação dos arquivos distritais, entre 1916 e 1992, assim como um conjunto de outras transformações afetaram a forma de gestão da rede de arquivos distritais entre 1973 e 2012.
description: Cadernos BAD, N.º 1-2 (2020)
Full-wave invisibility of active devices at all frequencies
Creators: name: Greenleaf, Allan
name: Kurylev, Yaroslav
name: Lassas, Matti
name: Uhlmann, Gunther
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 78A40; 35P25

description: There has recently been considerable interest in the possibility, both theoretical and practical, of invisibility (or "cloaking") from observation by electromagnetic (EM) waves. Here, we prove invisibility, with respect to solutions of the Helmholtz and Maxwell's equations, for several constructions of cloaking devices. Previous results have either been on the level of ray tracing [Le,PSS] or at zero frequency [GLU2,GLU3], but recent numerical [CPSSP] and experimental [SMJCPSS] work has provided evidence for invisibility at frequency $k\ne 0$. We give two basic constructions for cloaking a region $D$ contained in a domain $Ω$ from measurements of Cauchy data of waves at $\p Ω$; we pay particular attention to cloaking not just a passive object, but an active device within $D$, interpreted as a collection of sources and sinks or an internal current.
description: Final revision; to appear in Commun. in Math. Physics
Γυναίκες γυμνασίαρχοι και αγωνοθέτιδες κατά την αυτοκρατορική εποχή
Creators: name: Καϊσίδης, Παναγιώτης Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Γυμνασίαρχοι
Αγωνοθέτιδες
Ρόλος γυναικών
Gymnasiarchoi
Agonothetides
Role of women

description: Σκοπός της διπλωματικής εργασίας ήταν να καταδειχθεί ο κοινωνικός και οικονομικός ρόλος των γυναικών μέσα από παραδείγματα γυναικών που ανέλαβαν τα αξιώματα της γυμνασιαρχίας και της αγωνοθεσίας κατά την αυτοκρατορική εποχή. Τα αξιώματα αυτά προϋπέθεταν οικονομικές συνεισφορές που αποσκοπούσαν στη διενέργεια και οργάνωση εορτών και αγώνων στο πλαίσιο της λατρείας τοπικών θεοτήτων αλλά και της αυτοκρατορικής, στη συντήρηση του γυμνασίου και σε άλλες γενναιόδωρες ευεργεσίες προς το ευρύ κοινό. Η δημιουργία ενός προσωπογραφικού καταλόγου, που παρατίθεται στην αρχή της εργασίας, υποβοήθησε στην εξέλιξη της και στην εξαγωγή ποσοτικών συμπερασμάτων. Εξετάσθηκε το νομικό πλαίσιο, που όριζε το περιουσιακό κριτήριο ανάληψης αξιωμάτων από γυναίκες, και στη συνέχεια, παρουσιάσθηκαν παραδείγματα γυναικών που ακολούθησαν ή συνέχισαν την οικογενειακή ή και τη συζυγική παράδοση στα εν λόγω αξιώματα. Η εργασία κατέληξε σε παρατηρήσεις και συμπεράσματα, που ανέκυψαν επί του θέματος, λαμβάνοντας υπόψη τις έως σήμερα απόψεις της έρευνας. Τελικά, διαπιστώθηκε ότι οι γυναίκες αυτές τις περισσότερες φορές ανέλαβαν τα αξιώματα ως κληρονόμοι της πατρικής ή και της συζυγικής περιουσίας.
description: The aim of the present thesis was to show the social and economic role of women, by studying examples of women that appear as holders of the offices of gymnasiarchia and agonothesia during the Roman Imperial Period. These offices depended on financial contributions that aimed to the organization of local and imperial festivals and games, the maintenance of gymnasium and other generous benefactions towards the public. The creation of a prosopographical catalogue, that is included in the beginning of this study, aided the progress of this study and helped reach some quantitative conclusions. The study examined the legal framework that defined the wealth requested for the offices and moved on to presentation of women following or continuing a family or husband’s tradition in these offices or both. The study ended with observations and conclusions that came up from the subject of the study, taking into concideration the opinions of the research until today. Finally, was realised that these women was most of the time heiresses either of the paternal or husband’s property.
Studying discrete dynamical systems trough differential equations
Creators: name: Cima, Anna
name: Gasull, Armengol
name: Manosa, Victor
Publisher: name: arXiv
Year: 2007
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37C05, 37C27, 37E10, 39A20

description: In this paper we consider dynamical systems generated by a diffeomorphism F defined on U an open subset of R^n, and give conditions over F which imply that their dynamics can be understood by studying the flow of an associated differential equation, $\dot x=X(x),$ also defined on U. In particular the case where F has n-1 functionally independent first integrals is considered. In this case X is constructed by imposing that it shares with $F$ the same set of first integrals and that the functional equation $μ(F(x))=\det((DF(x))μ(x),$ for x in U has some non-zero solution. Several examples for n=2,3 are presented, most of them coming from several well-known difference equations.
description: 22 pages; 3 Figures
Novel mutations of the A mating-type idiomorph in Neurospora crassa
Creators: name: Stenberg, Leisa M.
Publisher: name: University of British Columbia
Year: 2008

description: The mating-type idiomorphs of Neurospora crassa, A and a, function in the sexual cycle to initiate mating and meiosis (A x a is fertile) and during vegetative growth to prevent heterokaryosis (A + a is incompatible). The A and a idiomorphs encodeputative regulatory polypeptides of 288 amino acids (mt A-1) and 382 amino acids(mt a-1), respectively, that are thought to control the expression of mating-specificgenes and determine a self versus non-self mechanism of recognition. The present study is an attempt to isolate new mutants of the A mating-type locus to further delineate the functional domains of the mt A-1 ORF that controls these seemingly unrelated functions. Previously, all A mating-type mutants isolated using UV mutagenesis were sterile and heterokaryon compatible, the result of frame shift mutations within mt A-1. In an attempt to isolate fertile and heterokaryon compatible A mutants, mutational analysiswas performed on mating-type A strains using 6-N-hydroxylaminopurine (H.A.P.), achemical mutagen that produces GC-*AT base pair substitutions, in addition to UV. All of the mutants isolated with UV were heterokaryon compatible and sterile. Onemutant isolated with H.A.P., Am99, was heterokaryon compatible and sterile as themale, but fertile as the female, producing near normal numbers of asci and ascopsores, although reduced numbers of perithecia. The mutant phenotype segregated with the A mating-type in all of the progeny tested. Sequencing analysis of the mt A-1 ORF showed that the mutant phenotype was the result of a base pair substitution that changed Trp-86 to a stop codon that would result in a truncated polypeptide of 85 amino acids. A second mutant isolated with H.A.P., Am13, was heterokaryon compatible and sterile as the male, but produced near normal numbers of perithecia, but not ascospores, as the female. Sequencing analysis of the mt A-1 ORF of Am13 showed a frame shift mutation at amino acid 208 produced the mutant phenotype. The different phenotypes observed between Am99, Am13 and A wild-type strains can thus be ascribed to differences in function of the polypeptides encoded by their mt A-1 ORFs. A model for mt A-1 function is presented to account for the phenotypes of these mutants in comparison to A wild-type strains.
Square Pegs, Round Holes and Missing Puzzle Pieces — The Conundrum of Administering Community Titles Scheme Terminations: An Argument for Law Reform
Creators: name: Pocock, Melissa
name: Dickfos, Jennifer
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 489999
subject: Other law and legal studies not elsewhere classified

description: The Body Corporate and Community Management Act 1997 (Qld) facilitates termination of a Queensland community titles scheme (‘CTS’) in two ways — by resolution of the owners, or a District Court order that it is just and equitable to terminate the CTS. This article investigates the court-ordered terminations of Nobbys Outlook CTS 14822 and Village Square CTS 24175. Through an interpretive research approach informed by a qualitative case study, the authors investigated the Village Square termination and identified three concerns. When compared to Village Square, the approach adopted in the Nobbys Outlook termination raised jurisdictional problems relevant for future terminations. Secondly, the termination process is largely undefined as compared to the statutory trustee for sale process in the Property Law Act 1974 (Qld), despite the arguably greater potential for complexity in CTS terminations. Finally, there is a lack of prescription around administrators’ roles, powers, obligations and protections, unlike the equivalent provisions in the Corporations Act 2001 (Cth). The authors provide recommendations for statutory reform to protect CTS owners.
RSN: Range Sparse Net for Efficient, Accurate LiDAR 3D Object Detection
Creators: name: Sun, Pei
name: Wang, Weiyue
name: Chai, Yuning
name: Elsayed, Gamaleldin
name: Bewley, Alex
name: Zhang, Xiao
name: Sminchisescu, Cristian
name: Anguelov, Dragomir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The detection of 3D objects from LiDAR data is a critical component in most autonomous driving systems. Safe, high speed driving needs larger detection ranges, which are enabled by new LiDARs. These larger detection ranges require more efficient and accurate detection models. Towards this goal, we propose Range Sparse Net (RSN), a simple, efficient, and accurate 3D object detector in order to tackle real time 3D object detection in this extended detection regime. RSN predicts foreground points from range images and applies sparse convolutions on the selected foreground points to detect objects. The lightweight 2D convolutions on dense range images results in significantly fewer selected foreground points, thus enabling the later sparse convolutions in RSN to efficiently operate. Combining features from the range image further enhance detection accuracy. RSN runs at more than 60 frames per second on a 150m x 150m detection region on Waymo Open Dataset (WOD) while being more accurate than previously published detectors. As of 11/2020, RSN is ranked first in the WOD leaderboard based on the APH/LEVEL 1 metrics for LiDAR-based pedestrian and vehicle detection, while being several times faster than alternatives.
Square Pegs, Round Holes and Missing Puzzle Pieces — The Conundrum of Administering Community Titles Scheme Terminations: An Argument for Law Reform
Creators: name: Pocock, Melissa
name: Dickfos, Jennifer
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 489999
subject: Other law and legal studies not elsewhere classified

description: The Body Corporate and Community Management Act 1997 (Qld) facilitates termination of a Queensland community titles scheme (‘CTS’) in two ways — by resolution of the owners, or a District Court order that it is just and equitable to terminate the CTS. This article investigates the court-ordered terminations of Nobbys Outlook CTS 14822 and Village Square CTS 24175. Through an interpretive research approach informed by a qualitative case study, the authors investigated the Village Square termination and identified three concerns. When compared to Village Square, the approach adopted in the Nobbys Outlook termination raised jurisdictional problems relevant for future terminations. Secondly, the termination process is largely undefined as compared to the statutory trustee for sale process in the Property Law Act 1974 (Qld), despite the arguably greater potential for complexity in CTS terminations. Finally, there is a lack of prescription around administrators’ roles, powers, obligations and protections, unlike the equivalent provisions in the Corporations Act 2001 (Cth). The authors provide recommendations for statutory reform to protect CTS owners.
libros de Bartolomé París
Creators: name: Ruiz Astiz, Javier
Publisher: name: Cadernos BAD
Year: 2021
Subjects: Librería
Inventario
Bartolomé París
Pamplona
Siglo XVII
655.1

description: Se estudia la figura del librero francés Bartolomé París en la Pamplona del siglo XVII. Para esto se analiza un inventario con los libros que poseía su librería en 1623, lo que permite comprobar los títulos y la procedencia de aquellas obras. Junto a las modas editoriales del momento se aprecian las fluidas relaciones mercantiles que mantuvo con diversas ciudades españolas y francesas. Se evidencia, por tanto, que el inventario de una librería del Siglo de Oro es un testimonio documental de primera magnitud para recuperar el pasado.
description: Cadernos BAD, N.º 1-2 (2020)
Reconstructing the Extreme Ultraviolet Emission of Cool Dwarfs Using Differential Emission Measure Polynomials
Creators: name: Duvvuri, Girish M.
name: Pineda, J. Sebastian
name: Berta-Thompson, Zachory K.
name: Brown, Alexander
name: France, Kevin
name: Kowalski, Adam F.
name: Redfield, Seth
name: Tilipman, Dennis
name: Vieytes, Mariela C.
name: Wilson, David J.
name: Youngblood, Allison
name: Froning, Cynthia S.
name: Linsky, Jeffrey
name: Loyd, R. O. Parke
name: Mauas, Pablo
name: Miguel, Yamila
name: Newton, Elisabeth R.
name: Rugheimer, Sarah
name: Schneider, P. Christian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Characterizing the atmospheres of planets orbiting M dwarfs requires understanding the spectral energy distributions of M dwarfs over planetary lifetimes. Surveys like MUSCLES, HAZMAT, and FUMES have collected multiwavelength spectra across the spectral type's range of Teff and activity, but the extreme ultraviolet flux (EUV, 100 to 912 Angstroms) of most of these stars remains unobserved because of obscuration by the interstellar medium compounded with limited detector sensitivity. While targets with observable EUV flux exist, there is no currently operational facility observing between 150 and 912 Angstroms. Inferring the spectra of exoplanet hosts in this regime is critical to studying the evolution of planetary atmospheres because the EUV heats the top of the thermosphere and drives atmospheric escape. This paper presents our implementation of the differential emission measure technique to reconstruct the EUV spectra of cool dwarfs. We characterize our method's accuracy and precision by applying it to the Sun and AU Mic. We then apply it to three fainter M dwarfs: GJ 832, Barnard's Star, and TRAPPIST-1. We demonstrate that with the strongest far ultraviolet (FUV, 912 to 1700 Angstroms) emission lines, observed with Hubble Space Telescope and/or Far Ultraviolet Spectroscopic Explorer, and a coarse X-ray spectrum from either Chandra X-ray Observatory or XMM-Newton, we can reconstruct the Sun's EUV spectrum to within a factor of 1.8, with our model's formal uncertainties encompassing the data. We report the integrated EUV flux of our M dwarf sample with uncertainties between a factor of 2 to 7 depending on available data quality.
description: 37 pages, 22 figures, and 5 tables. A citation to Woods et al. (2009) in Table 5 was altered to plain text because of issues with Arxiv's AutoTex processing, but the full reference is preserved in the bibliography
Kelly Criterion revisited: optimal bets
Creators: name: Piotrowski, Edward W.
name: Schroeder, Malgorzata
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Portfolio Management (q-fin.PM)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Kelly criterion, that maximizes the expectation value of the logarithm of wealth for bookmaker bets, gives an advantage over different class of strategies. We use projective symmetries for a explanation of this fact. Kelly's approach allows for an interesting financial interpretation of the Boltzmann/Shannon entropy. A "no-go" hypothesis for big investors is suggested.
description: APFA5 Conference, Torino, 2006
Home range behavior of Roosevelt elk in Strathcona Park
Creators: name: Sovka, David G.
Publisher: name: University of British Columbia
Year: 2008

description: This thesis investigates the population, group composition, and home rangesizes of 5 groups of Roosevelt elk (Cervus elaphus roosev -It) in 4 regions of Strathcona Provincial Park on Vancouver Island, British Columbia. Ten elk were successfully radio-collared and re-located for 12-21 months, beginning in March 1991, and ending in January 1993. Eight of the 10 study animals were non-migratory. Sizes of cumulative and seasonal ranges, and core use areas were determined for each study animal using the harmonic mean estimator of Program Home Range. Three seasonal models (summer, mild winter, and severe winter) of habitat suitability were tested using a non-migratory elk group. A Geographic Information System (GIS) was used to create a digital map of the study area. The models were applied to the map to generate habitat suitability values for each of the polygons comprising the study area. This study provides additional support for a correlation between habitat suitability as predicted by the model and elk habitat selection. Elk were not randomly selecting habitats in the study area with respect to modeled habitat suitability values. Habitat suitability of elk cumulative range was higher than portions of the study area unused by elk. Core use areas had higher habitat suitability than cumulative range. No one model best predicted the habitat suitability of the home range selected by the non-migratory study animals. Use of the model as a predictor of suitable elk habitat in areas currently unused by elk is validated, but not warranted given the time and money required to collect the information necessary to use the model.
Fermionic Casimir effect in toroidally compactified de Sitter spacetime
Creators: name: Saharian, A. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the fermionic condensate and the vacuum expectation values of the energy-momentum tensor for a massive spinor field in de Sitter spacetime with spatial topology $\mathrm{R}^{p}\times (\mathrm{S}^{1})^{q}$. Both cases of periodicity and antiperiodicity conditions along the compactified dimensions are considered. By using the Abel-Plana formula, the topological parts are explicitly extracted from the vacuum expectation values. In this way the renormalization is reduced to the renormalization procedure in uncompactified de Sitter spacetime. It is shown that in the uncompactified subspace the equation of state for the topological part of the energy-momentum tensor is of the cosmological constant type. Asymptotic behavior of the topological parts in the expectation values is investigated in the early and late stages of the cosmological expansion. In the limit when the comoving length of a compactified dimension is much smaller than the de Sitter curvature radius the topological part in the expectation value of the energy-momentum tensor coincides with the corresponding quantity for a massless field and is conformally related to the corresponding flat spacetime result. In this limit the topological part dominates the uncompactified de Sitter part. In the opposite limit, for a massive field the asymptotic behavior of the topological parts is damping oscillatory for both fermionic condensate and the energy-momentum tensor.
description: 19 pages, 5 figures
The Planck submillimeter properties of Galactic high-mass star forming regions: dust temperatures, luminosities, masses and Star Formation Efficiency
Creators: name: Paladini, R.
name: Mottram, J. C.
name: Veneziani, M.
name: Traficante, A.
name: Schisano, E.
name: Giardino, G.
name: Falgarone, E.
name: Urquhart, J. S.
name: Harrison, D. L.
name: Joncas, G.
name: Umana, G.
name: Molinari, S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Massive star formation occurs in the interior of giant molecular clouds (GMC) and proceeds through many stages. In this work, we focus on massive young stellar objects (MYSOs) and Ultra-Compact HII regions (UCHII), where the former are enshrouded in dense envelopes of dust and gas, which the latter have begun dispersing. By selecting a complete sample of MYSOs and UCHII from the Red MSX Source (RMS) survey data base, we combine Planck and IRAS data and build their Spectral Energy Distributions (SEDs). With these, we estimate the physical properties (dust temperatures, mass, luminosity) of the sample. Because the RMS database provides unique solar distances, it also allows investigating the instantaneous Star Formation Efficiency (SFE) as a function of Galactocentric radius. We find that the SFE increase between 2 and 4.5 kpc, where it reaches a peak, likely in correspondence of the accumulation of molecular material at the end of the Galactic bar. It then stays approximately constant up to 9 kpc, after which it linearly declines, in agreement with predictions from extragalactic studies. This behavior suggests the presence of a significant amount of undetected molecular gas at R$_G$ $>$ 8 kpc. Finally we present diagnostic colors that can be used to identify sites of massive star formation.
description: Accepted for publication to ApJ
The Pauli equation in scale relativity
Creators: name: Celerier, Marie-Noelle
name: Nottale, Laurent
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In standard quantum mechanics, it is not possible to directly extend the Schrodinger equation to spinors, so the Pauli equation must be derived from the Dirac equation by taking its non-relativistic limit. Hence, it predicts the existence of an intrinsic magnetic moment for the electron and gives its correct value. In the scale relativity framework, the Schrodinger, Klein-Gordon and Dirac equations have been derived from first principles as geodesics equations of a non-differentiable and continuous spacetime. Since such a generalized geometry implies the occurence of new discrete symmetry breakings, this has led us to write Dirac bi-spinors in the form of bi-quaternions (complex quaternions). In the present work, we show that, in scale relativity also, the correct Pauli equation can only be obtained from a non-relativistic limit of the relativistic geodesics equation (which, after integration, becomes the Dirac equation) and not from the non-relativistic formalism (that involves symmetry breakings in a fractal 3-space). The same degeneracy procedure, when it is applied to the bi-quaternionic 4-velocity used to derive the Dirac equation, naturally yields a Pauli-type quaternionic 3-velocity. It therefore corroborates the relevance of the scale relativity approach for the building from first principles of the quantum postulates and of the quantum tools. This also reinforces the relativistic and fundamentally quantum nature of spin, which we attribute in scale relativity to the non-differentiability of the quantum spacetime geometry (and not only of the quantum space). We conclude by performing numerical simulations of spinor geodesics, that allow one to gain a physical geometric picture of the nature of spin.
description: 22 pages, 2 figures, accepted for publication in J. Phys. A: Math. & Gen
Understanding How and Why Developers Seek and Analyze API-related Opinions
Creators: name: Uddin, Gias
name: Baysal, Olga
name: Guerrouj, Latifa
name: Khomh, Foutse
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: With the advent and proliferation of online developer forums as informal documentation, developers often share their opinions about the APIs they use. Thus, opinions of others often shape the developer's perception and decisions related to software development. For example, the choice of an API or how to reuse the functionality the API offers are, to a considerable degree, conditioned upon what other developers think about the API. While many developers refer to and rely on such opinion-rich information about APIs, we found little research that investigates the use and benefits of public opinions. To understand how developers seek and evaluate API opinions, we conducted two surveys involving a total of 178 software developers. We analyzed the data in two dimensions, each corresponding to specific needs related to API reviews: (1) Needs for seeking API reviews, and (2) Needs for automated tool support to assess the reviews. We observed that developers seek API reviews and often have to summarize those for diverse development needs (e.g., API suitability). Developers also make conscious efforts to judge the trustworthiness of the provided opinions and believe that automated tool support for API reviews analysis can assist in diverse development scenarios, including, for example, saving time in API selection as well as making informed decisions on a particular API features.
Measurement of CP Asymmetry in B0 to Ks pi0 pi0 Decays
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay into the CP = +1 final state Ks pi0 pi0, with Ks -> pi+ pi-. We use a sample of approximately 227 million B-meson pairs recorded at the Upsilon(4S) resonance with the BABAR detector at the PEP-II B-Factory at SLAC. From an unbinned maximum likelihood fit we extract the mixing-induced CP-violation parameter S = 0.72 +/- 0.71 +/- 0.08 and the direct CP-violation parameter C = 0.23 +/- 0.52 +/- 0.13, where the first uncertainty is statistical and the second systematic.
description: 8 pages, 6 figures, submitted to Phys. Rev. D (Rapid Communications)
À procura do conceito de preservação digital
Creators: name: Ferreira, Nuno Menezes
name: Martins, Óscar Dinis
Publisher: name: Cadernos BAD
Year: 2021
Subjects: Preservação digital
Curadoria digital
Artigo de pesquisa
Segurança da informação
004

description: Com este artigo pretende-se fazer um levantamento do conceito de preservação digital das origens à atualidade. Para tal, foi feita uma revisão da literatura com o objetivo de auxiliar todos os projetos e estudos que desenvolvem ou pretendam vir a desenvolver trabalhos na área da preservação, conservação e curadoria informacional digital. A metodologia adotada consistiu na pesquisa de publicações científicas, utilizando o método qualitativo, conjugando a realidade nacional com a realidade internacional. O presente trabalho faz uma abordagem sobre as diversas escolas e a seu reflexo na evolução do pensamento e das soluções encontradas até ao momento. A importância de estudos atualizados sobre esta temática são essenciais para a definição de um conjunto de soluções tecnológicas adequadas ao momento informacional em que vivemos, tendo em conta o desmesurado crescimento de informação digital.
description: Cadernos BAD, N.º 1-2 (2020)