cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
La spécificité de transmission des petites et moyennes entreprises en Côte d'Ivoire
Creators: name: SORO, Sientionhon Amadou
name: SONZAÏ, Théodore
Publisher: name: Zenodo
Year: 2024
Subjects: Transmission ; entrepreneuriat ; qualitative ; croyances ; africaines.

description: La transmission entrepreneuriale est une préoccupation majeure car elle est susceptible d’aboutir à une disparition pure et simple d’entreprises fleurissantes. Cette source de destruction non créatrice de valeur est peu étudiée dans notre contexte. La présente étude essaie de décrire cette réalité à la lumière de la polygynie et certaines croyances africaines. Pour atteindre l’objectif, l’étude s’est appuyée sur la théorie de la transition, d’une double approche basée sur des entretiens semi-directifs et de l’observation interactionnelle de cinq (05) cas durant plusieurs années. Les résultats révèlent que la primauté est d’emblée accordée à la transmission interne ; elle devient externe à défaut. Dans le cas d’une transmission externe la préoccupation majeure de l’entrepreneur devient la transmission de l’activité entrepreneuriale sans le patrimoine. La polygynie et certaines croyances africaines sont des facteurs perturbateurs du processus de transfert. Cela plonge ainsi le cédant dans une réflexion profonde et parfois le pousse à un laisser-faire. Cette situation est source d’échec entrepreneurial.
Discretizing Distributions with Exact Moments: Error Estimate and Convergence Analysis
Creators: name: Tanaka, Ken'ichiro
name: Toda, Alexis Akira
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 41A25, 41A29, 62E17, 62P20, 65D30, 65K99

description: The maximum entropy principle is a powerful tool for solving underdetermined inverse problems. This paper considers the problem of discretizing a continuous distribution, which arises in various applied fields. We obtain the approximating distribution by minimizing the Kullback-Leibler information (relative entropy) of the unknown discrete distribution relative to an initial discretization based on a quadrature formula subject to some moment constraints. We study the theoretical error bound and the convergence of this approximation method as the number of discrete points increases. We prove that (i) the theoretical error bound of the approximate expectation of any bounded continuous function has at most the same order as the quadrature formula we start with, and (ii) the approximate discrete distribution weakly converges to the given continuous distribution. Moreover, we present some numerical examples that show the advantage of the method and apply to numerically solving an optimal portfolio problem.
description: 20 pages, 14 figures
Sonnenfleckenzeichnung Nr. 203.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.09.2015, 09:00, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Experiences of Self-Compassion in Young Adults with Non-Binary Gender Identities
Creators: Budzan, Brittany N
Publisher: name: University of Alberta Library
Year: 2023

Despite accounting for a significant proportion of the transgender population, non-binary individuals are often neglected within research. Studies that do include non-binary participants are often focused on deficit, stigma, and mental health disparities, resulting in a narrow and one-sided understanding of the experiences of non-binary people. Although it is important to be aware of the impacts of societal marginalization, it is crucial that health professionals also understand the strengths and resiliency of this group.

Young adulthood is a particularly important development period for non-binary individuals. A defining feature of this developmental stage is identity instability, often accompanied by a sense of confusion and uncertainty. Considering that many non-binary individuals transition during this time period, an understanding of the strengths and potential coping skills of non-binary young adults is beneficial for all helping professionals.

A potential coping skill for non-binary young adults is self-compassion. Broadly, self-compassion can be conceptualized as the capacity to treat oneself with kindness and understanding. Existing research has found that self-compassion helps to improve mental well-being and life satisfaction, and can also act as a protective force, buffering against the effects of trauma, discrimination, and internalized stigma. Accordingly, self-compassion merits investigation as a source of resiliency for non-binary young adults. However, this area of study currently represents a significant gap within the existing literature.

The purpose of this study was to explore the experiences of self-compassion in non-binary young adults. To this end, I utilized an interpretative phenomenological analysis approach, engaging in in-depth interviews with seven participants. Transcripts for each interview were coded and grouped into higher order themes. After analyzing individual cases, I conducted a cross-case analysis, from which emerged five super-ordinate themes: (a) intentional self-care; (b) developing a positive sense of self; (c) living with authenticity; (d) improved coping through perspective taking, and (e) self-compassion as an interpersonal process. The findings from this study suggest that self-compassion may be a positive strategy for promoting mental health and well-being in non-binary young adults. Implications for clinical practice are discussed, in addition to limitations and future research directions.
This Way to Fun: Tourism Advertising in a Changing Deep South (1976-1981)
Creators: name: Santangeli Valenzani, Giuliano
Publisher: name: USAbroad – Journal of American History and Politics
Year: 2020

description: The tourist image of the South has experienced a profound transformation in the last decades. From a romantic, exotic and anti-modern destination linked with the Lost Cause narrative, the former Confederacy shifted its image towards a more complex and almost chaotic mixture of different images and themes. Analyzing advertisements and documents produced by tourism bureaus in four southern states, the author argues how the main and decisive phase of this transition took place in the years between the mid-1970s and early 1980s both as a reaction to internal developments in the tourism industry and to profound changes in American culture.
description: USAbroad – Journal of American History and Politics, Vol. 3 No. 1S (2020): Special Issue
For a Racial and Transnational History of the Origins of American Socialism
Creators: name: Costaguta, Lorenzo
Publisher: name: USAbroad – Journal of American History and Politics
Year: 2020

description: This essay provides a historiographical contextualization to the research that the author will publish in his forthcoming monograph, provisionally titled The Origins of Colorblind Socialism: Race and Class in the American Left, 1876-1899. Through a research in the multilingual socialist press, party archives and personal papers of socialist leaders, the book offers the first investigation of ideas of race in the American socialist movement at the end of the nineteenth century.
description: USAbroad – Journal of American History and Politics, Vol. 3 No. 1S (2020): Special Issue
The History of the United States in Italy: Generations in Dialogue – Special Issue in Celebration of Tiziano Bonazzi's 80th Birthday
Creators: name: Battistini, Matteo
name: Santese, Angela
Publisher: name: USAbroad – Journal of American History and Politics
Year: 2020

description: USAbroad – Journal of American History and Politics, Vol. 3 No. 1S (2020): Special Issue
Additional file 1 of Novel diaminoguanidine functionalized cellulose: synthesis, characterization, adsorption characteristics and application for ICP-AES determination of copper(II), mercury(II), lead(II) and cadmium(II) from aqueous solutions
Creators: name: Akl, Magda A.
name: Hashem, Mohammed A.
name: Ismail, Mohammed A.
name: Abdelgalil, Dina A.
Publisher: name: figshare
Year: 2022
Subjects: subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1: Fig. S1. FTIR of (a)Native cellulose, (b)DAC, (c) DiGu.MC. (d) DiGu.MC-Cu(II). Fig. S2 TGA curves of (a) DiGu-MC, (b) Cu-DiGu-MC, (c) Hg-DiGu-MC, (d) Pb-DiGu-MC (e) Cd-DiGu-MC. Fig. S3. Effect of initial concentration on adsorption of heavy metals by DiGu-MC. Table S1: Specific Surface areas of native cellulose and DiGu-MC fibers.
Sonnenfleckenzeichnung Nr. 202.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.09.2015, 10:15, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
title: Kaimei KM21-E02 cruise report
Creators: name: Nomaki, Hidetaka
Publisher: name: JAMSTEC
Year: 2021
Subjects: subject: Cruise report
subject: R/V KAIMEI
subject: oceans

description: [CRUISE REPORT] This document is a preliminary report of KM21-E02 on R/V KAIMEI from 2021-02-02 to 2021-02-06.
Sonnenfleckenzeichnung Nr. 235.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.11.2015, 10:45, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 37.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.02.2015, 08:45, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 222.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.10.2015, 08:30, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 238.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.11.2015, 09:45, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Solving Witness-type Triangle Puzzles Faster with an Automatically Learned Human-Explainable Predicate
Creators: Stevens, Justin D
Publisher: name: University of Alberta Library
Year: 2023

The Witness is a game with difficult combinatorial puzzles that are challenging for both human players and artificial intelligence based solvers. Indeed, the number of candidate solution paths to the largest puzzle considered in this thesis is on the order of 10^(15) and search-based solvers can require large amounts of time and memory to solve such puzzles. We accelerate search by automatically learning human-explainable predicates that predict whether a partial path to a Witness-type puzzle is not completable to a solution path. We prove a key property of one of the learned predicates which allows us to use it for pruning successor states in search. Our method accelerates search by an average of six times while maintaining completeness of the underlying search. We also explain how our predicate speeds up search on a specific puzzle instance by over 1000 times. Conversely given a fixed search time budget per puzzle our predicate-accelerated search can solve more puzzle instances of larger sizes than the baseline search. We also empirically compare the performance of our learned predicate to two popular competitors, weighted A* and Levin tree search with neural networks, and show that our learned predicate outperforms both of them in terms of how much they speed up a baseline.
Sonnenfleckenzeichnung Nr. 13.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.01.2015, 11:30, erstellt von Andrea Manna
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Visual State Estimation for Autonomous Navigation
Creators: Salimzadeh, Ali
Publisher: name: University of Alberta Library
Year: 2023

This thesis aims at improving robot perception for autonomous navigation in highly dynamic environments. In the first part of this research, a fixed frame visual localization method utilizing a fisheye monocular camera is proposed to enhance the navigation accuracy for autonomous mobile robots in dynamic indoor environments (with direct application to warehouse or service robotics). The method develops an optimal variance filter with covariance adaptation for visual state estimation and is able to address challenging scenarios due to full/partial occlusion. In the second part of this thesis, a novel and computationally-efficient visual-inertial dynamic object detection and tracking framework is proposed, using onboard visual and inertial sensors for autonomous navigation in highly-dynamic environments to address challenges of existing localization and navigation methods that heavily rely on the assumption of static features in the scene or use learning-based methods to detect dynamic objects. The novel framework combines prediction over inertial data with the measurements from stereo vision-based state estimation to form a stochastic filter with Bayesian tracking for motion classification. In this pipeline, point cloud clustering, disparity map generation, and consistent tracking have also been conducted for both fixed- and moving-frame scenarios.

The proposed frameworks are experimentally validated in several autonomous navigation scenarios in highly dynamic indoor/outdoor environments and in urban settings. The two distinct solutions presented in this thesis, are designed to resolve challenges imposed by the dynamic nature of the environment including occlusions and unreliable feature selection for localization. The results of this thesis confirm the reliable, consistent, and real-time performance of the developed frameworks in both fixed frame (i.e., infrastructure-based) and moving frame state estimation using multimodal visual-inertial data. Combining the two solutions proposed in this thesis for networked robotic systems and connected autonomous driving leads to more precise, robust, and efficient autonomous navigation systems that can be used for both indoor and outdoor applications.
A Systematic Review of Think Alouds in Computational Thinking Research
Creators: Pan, Zexuan
Publisher: name: University of Alberta Library
Year: 2023

Computational thinking (CT) has become an essential literacy for the digital age, as it enables individuals to approach complex problems systematically and adapt to a rapidly changing technological landscape. Despite the educational benefits of CT being largely supported in the literature, the cognitive processes associated with CT are not yet well understood, restricting researchers and practitioners from designing more effective instructional strategies and personalized learning experiences. This warrants the investigation of alternative data collection methods that can provide deeper insights into individuals’ cognitive processes during CT-related activities. One such method is think-aloud interviews, which involve participants verbalizing their real-time thoughts while engaging in problem-solving tasks. This systematic review examines 35 empirical studies featuring the use of think-aloud interviews in CT research. Findings show that think-aloud interviews (1) are typically conducted in Computer Science classrooms and with K-12 students; (2) are usually combined with other exploratory CT assessment tools; (3) have the potential to benefit learners with special needs and identify the competency gaps through involving diverse participants; (4) are conducted in the absence of cognitive models and standard procedures; and (5) display insufficient definitional and methodological rigor. Theoretically, this review presents a systematic assessment of the application of think-aloud interviews in CT studies and identifies gaps in existing CT-related think-aloud studies. Practically, this review serves as a reference for studying the cognitive processes during CT problem-solving and provides suggestions for CT researchers who intend to incorporate think-aloud interviews in their studies.
Sonnenfleckenzeichnung Nr. 114.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.06.2015, 06:45, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 67.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.04.2015, 08:30, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
A Study of Complaint Sequences on WeChat: a Chinese Instant Messaging Application
Creators: Yang, Yining
Publisher: name: University of Alberta Library
Year: 2023

Instant messaging, as a type of Internet-mediated communication, is prevalent in people’s daily lives. It allows people to use various multimodal resources—e.g., images, emojis, audio, and videos—to interact with each other remotely (Herring and Androutsopoulos, 2015). This research focuses on one specific social action sequence—the complaint sequence—in Chinese instant-messaging interactions. Specifically, this research explores third-party complaint sequences on WeChat, one of the most popular instant messaging applications among Chinese speakers.

Adopting the methodology of conversation analysis (CA), interactional linguistics (IL), and multimodal analysis, this study investigates the sequential organization and multimodal design of complaint sequences. Complaint sequences consist of the initiating action of the complaint (hereafter referred to as a complaint) and the response to the complaint (hereafter referred to as a response). This is also how a complaint sequence is consisted in WeChat interactions. The data used in this study are 36 excerpts of complaint sequences on WeChat. An examination of the data shows that complaints consist of two parts: problem presentation and display of negative affect. Based on the order of the two components, complaints exhibit two structure patterns: 1) problem presentation + display of affect, and 2) display of affect + problem presentation. In terms of the response to complaints, three types of responsive action have been identified: display of affiliation, consolement, and suggestion. Displays of affiliation are accomplished through four practices: exclamations and expletives, assessments, expressions of empathy, and rhetorical questions. Regarding the design of complaint sequences, both complaints and responses are accomplished through a variety of multimodal resources. For example, in complaints, participants may use images in problem presentations and emojis in displays of negative affect. In responses, hug emojis are used by complainees to show their consolement. The findings of this study contribute to our understanding of how people make and respond to complaints in Chinese instant messaging interactions.
Identifying the most crucial parameters of the initial curvature profile for primordial black hole formation
Creators: name: Nakama, Tomohiro
name: Harada, Tomohiro
name: Polnarev, A. G.
name: Yokoyama, Jun'ichi
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Primordial black holes (PBHs) are an important tool in cosmology to probe the primordial spectrum of small-scale curvature perturbations that reenter the cosmological horizon during radiation domination epoch. We numerically solve the evolution of spherically symmetric highly perturbed configurations to clarify the criteria of PBHs formation using an extremely wide class of curvature profiles characterized by five parameters, (in contrast to only two parameters used in all previous papers) which specify the curvature profiles not only at the central region but also at the outer boundary of configurations. It is shown that formation or non-formation of PBHs is determined entirely by only two master parameters one of which can be presented as an integral of curvature over initial configurations and the other is presented in terms of the position of the boundary and the edge of the core.
description: 25 pages, 9 figures, typos corrected, remarks added, figures modified
Invisible barriers : underpasses as a highway legacy
Creators: name: Samiliv, Tetyana
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: Underpasses
Walkability
Pedestrian safety
Connectivity

description: Exploring the interaction between cars and non-motorized road users, this report aims to analyze the physical and perceived safety of I-35 underpasses in Austin, TX. Inspired by the lived experience of using the underpasses and literature on pedestrian safety design, I decided to survey and map the quality and safety of 20 underpasses. Here, pedestrians are often at odds with the danger of high-speed traffic, narrow or non-existent sidewalks, short traffic light cycles, and broken or subpar intersection amenities. To document the quality of underpasses, I conducted a study and an in-person survey of underpasses and an analysis of the level of traffic stress experienced by non-motorized road users. This study suggests that underpasses are a collateral of highways and prevent connectivity between two sides of the city, East and West in the case of Austin, and how that affects people’s access to space. I further explore ways that underpasses can become a better environment for all road users and how that space can be reclaimed. Finally, I identify ways in which the cap and stitch project for the proposed I-35 expansion in Central Austin can be successful and beneficial to the East-West connectivity.
Local Conformal Symmetry in Physics and Cosmology
Creators: name: Bars, Itzhak
name: Steinhardt, Paul
name: Turok, Neil
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show how to lift a generic non-scale invariant action in Einstein frame into a locally conformally-invariant (or Weyl-invariant) theory and present a new general form for Lagrangians consistent with Weyl symmetry. Advantages of such a conformally invariant formulation of particle physics and gravity include the possibility of constructing geodesically complete cosmologies. We present a conformal-invariant version of the standard model coupled to gravity, and show how Weyl symmetry may be used to obtain unprecedented analytic control over its cosmological solutions. Within this new framework, generic FRW cosmologies are geodesically complete through a series of big crunch - big bang transitions. We discuss a new scenario of cosmic evolution driven by the Higgs field in a \textquotedblleft minimal\textquotedblright% \ conformal standard model, in which there is no new physics beyond the standard model at low energies, and the current Higgs vacuum is metastable as indicated by the latest LHC data.
description: 34 pages, 1 figure, v2 improves the presentation
Recurrent Linear Transformers for Reinforcement Learning
Creators: Pramanik, Subhojeet
Publisher: name: University of Alberta Library
Year: 2023

The transformer architecture is effective in processing sequential data, both because of its ability to leverage parallelism, and because of its self-attention mechanism capable of capturing long-range dependencies. However, the self-attention mechanism is slow for streaming data, that is when the input sequence is received one at a time. This limits its application in sequential decision-making problems such as online reinforcement learning. The self-attention mechanism requires past activations, that is the history, to be provided as context. As such, the inference cost, the cost of applying self-attention to a single element in a sequence, depends on the length of the input context. Increasing the context length of self-attention directly increases the inference cost. In this thesis, we present recurrent alternatives to the transformer self-attention that offer a context-independent inference cost, while also leveraging long-range dependencies. Our approaches are called the Recurrent Linear Transformer (ReLiT) and Approximate Recurrent Linear Transformer (AReLiT). We evaluate them on T-Maze, a partially observable reinforcement learning task that requires long-term memory, demonstrating their effectiveness when compared to existing RNN and transformer baselines. Additionally, we provide results in Memory Maze, a 3D pixel-based environment, and we empirically demonstrate the computational efficiency of our approach compared to standard transformer architectures.
Sonnenfleckenzeichnung Nr. 154.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.07.2015, 08:30, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Transition From Laminar to Turbulent Flow in Non-Newtonian Channel Flows: The Impact of Drag Reducing Polymer Additives
Creators: Fathizadeh, Ali
Publisher: name: University of Alberta Library
Year: 2023

This thesis investigates the effect of a drag-reducing polymer on laminar-turbulent transition in a gravity-driven channel flow. The drag-reducing polymer is polyacrylamide (PAM) dissolved in water at concentrations of 50, 75, 100, and 150 parts per million (ppm). An extensive experimental campaign utilizing particle image velocimetry is conducted to measure the velocity field in streamwise-wall-normal and streamwise-spanwise planes across a range of Reynolds numbers (Re). The transition to turbulence is delayed by the introduction of PAM, with the delay increasing with the relaxation time of the polymer solution.

For low PAM concentrations of 50 and 75 ppm, the skin friction coefficient (Cf) increases with increasing Re before the onset of drag reduction around Re = 2500. After the drag reduction onset, Cf values will decline with further increase in Re. The transitional flow structures in the streamwise-wall-normal plane resemble Newtonian turbulence, containing recognizable turbulent spots. In the streamwise-spanwise plane, the turbulent core appears connected to chaotic streaks attached to the leading edge of the spot.

In contrast, the higher PAM concentrations of 100 and 150 ppm display substantially different transitional physics. The Cf values depart the laminar trend at Re ≈ 3000, approaching the maximum drag reduction asymptote without demonstrating an onset point. The solutions undergo a remarkably smoother transition spanning over a Re range of approximately 1000 units. Turbulent spots are minimal, and elongated streamwise streaks dominate the flows instead.

Analysis of turbulence statistics reveals concentration-dependent modifications. At 50 and 75 ppm, turbulence intensity matches the Newtonian value of around 1% in laminar regions between turbulent spots. However, at 100 and 150 ppm, the intensity grows to 1.7% in laminar regions, indicating enhanced fluctuations. Within turbulent regions, intensity declines from 5% in Newtonian cases to 3% at 150 ppm, suggesting substantial turbulence attenuation.

In summary, this thesis demonstrates the impact of polymer additives on transitional channel flows. The additives expand the transitional regime and transform the emergence of coherent structures in a concentration-dependent manner, as evidenced by elongated streaks dominating at higher concentrations.
Sonnenfleckenzeichnung Nr. 121.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 18.06.2015, 09:30, erstellt von Michele Bianda
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Rural Chinese Older Adults Use of Social Media as a Learning Tool: Opportunities and  Obstacles to Learning
Creators: Wang, Zhongrui
Publisher: name: University of Alberta Library
Year: 2023

Because of the development of digital technology, social media is becoming an indispensable software in everyone's mobile phones and computers. The rise of social media has led educators and learners to explore the possibilities of integrating it into the field of learning. Social media's unique features of personalisation, comprehensiveness and breadth make it an invaluable learning tool. In China's vast rural areas, social media is gradually becoming a major learning tool for older adults. However, in such an era of rapid development of the Internet and social media, older people in rural areas, who are in a weaker position in the composition of all Internet users, are becoming more and more marginalised.

Currently, academics widely discuss how social media are used by students in their learning, but few studies have focused on the use of social media for learning by older adults in rural China, nor have they examined what social media older adults in rural China use for learning, and what is the current situation they face in their learning. Therefore, it is important to understand the experiences of rural Chinese older learners using social media as a means of learning in order to better integrate social media technologies into the learning of rural older adults, which can contribute to the development of education as well as the ability of rural older adults to develop themselves.

This qualitative study captured the experiences of older learners using social media as a learning tool through interviews in Mulan Township, Wuhan City, Hubei Province, China.Four participants took part in this study through semi-structured interviews, all of whom were between 60 and 75 years old, spoke Mandarin, and at the time of the interviews had at least 1-3 years of experience in using social media for learning. The data analysis methodology of grounded theory was used in this study, specifically, through a three-step process, open, axial, and selective coding were extracted from the raw data, and these codes were combined into different main categories and elements based on the research questions. This study concludes that social media has now become a major learning tool for older adults in rural China, and that in using social media for learning, there are benefits such as security and content richness, but there are also challenges such as information leakage and lack of instruction.

Finally, based on the results of this study, some suggestions for future research and practice are made, such as investigating the influence of family members on older adults' use of social media as a learning tool.
Sonnenfleckenzeichnung Nr. 5.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.01.2015, 09:15, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 217.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 20.10.2015, 08:00, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
The contact property for nowhere vanishing magnetic fields on the two-sphere
Creators: name: Benedetti, Gabriele
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 37J05 (Primary), 53D05, 53D10 (Secondary)

description: In this paper we give some positive and negative results about the contact property for the energy levels $Σ_c$ of a symplectic magnetic field on $S^2$. In the first part we focus on the case of the area form on a surface of revolution. We state a sufficient condition for an energy level to be of contact type and give an example where the contact property fails. If the magnetic curvature is positive, the dynamics and the action of invariant measures can be numerically computed. This hints at the conjecture that an energy level of a symplectic magnetic field with positive magnetic curvature should be of contact type. In the second part we show that, for small energies, there exists a convex hypersurface $N_c$ in $\mathbb C^2$ and a covering map $p_c:N_c \rightarrow Σ_c$ such that the pull-back via $p_c$ of the characteristic distribution on $Σ_c$ is the standard characteristic distribution on $N_c$. As a corollary we prove that there are either two or infinitely many periodic orbits on $Σ_c$. The second alternative holds if there exists a contractible prime periodic orbit.
description: 31 pages, 1 figure. Minor typos corrected. Published online in "Ergodic Theory and Dynamical Systems"
A Python Library for Nuclear Astrophysics
Creators: name: Smith Clark, Alexander
name: Johnson, Eric T.
name: Chen, Zhi
name: Eiden, Kiran
name: Willcox, Donald E.
name: Boyd, Brendan
name: Cao, Lyra
name: DeGrendele, Christopher J.
name: Zingale, Michael
Publisher: name: Zenodo
Year: 2022

description: This submission contains all the supplemental Jupyter notebooks that generates the figures of the journal article entitled: A Python Library for Nuclear Astrophysics.
Un ignoto incisore di gemme: lo scultore e ceroplasta Francesco Pozzi
Creators: name: Tassinari, Gabriella
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:

This study resolves the rebus of identifying the unknown engraver not mentioned in any text of glyptic, nor testified by casts of gems and glass pastes, which signs POZZI three intaglios and two cameos, almost all unpublished, and which demonstrate great skill. This is the renowned Tuscan Francesco Pozzi (1790-1844), sculptor in Florence and Rome, and wax modeler. Its varied activity is reconstructed, then both the numerous and prestigious commissions and the five high quality gems are analyzed. An intaglio reproduces the famous painting by Jacques-Louis David, with Napoleon Bonaparte at the Passo del Gran S. Bernardo, two cameos portray the dukes of Modena and Reggio, Francesco IV and his wife Maria Beatrice Vittoria, an intaglio depicts Leopold I king of the Belgians and another an unidentified male bust.

description: MDCCC 1800
Sonnenfleckenzeichnung Nr. 194.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 14.09.2015, 11:30, erstellt von Sergio Cortesi
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 2.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Effect of scalar leptoquarks on the rare decays of B_s meson
Creators: name: Mohanta, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effect of scalar leptoquarks on some rare decays of $B_s$ mesons involving the quark level transition $b\rightarrow s$ $l^{+} l^{-}.$ In particular we consider the decays $B_{s} \rightarrow μ^{+} μ^{-}$, $\bar B_d^0 \to X_s μ^+ μ^-$ and $B_{s} \rightarrow ϕ$ $μ^{+} μ^{-}$. The leptoquark parameter space is constrained using the recently measured branching ratio of the $B_{s} \rightarrow μ^{+} μ^{-}$ process at LHCb and CMS experiments. Using such parameters we obtain the branching ratio, forward backward asymmetry and the CP asymmetry parameters in the angular distribution of $B_s \rightarrow ϕ$ $μ^+ μ^-$ process.
description: 25 pages, 7 figures, published version
Le lettere di Francesco Paolo Como a Ettore Ferrari.
Creators: name: Castellana, Stefania
Publisher: name: Fondazione Università Ca’ Foscari Venezia, Italia
Year: 2020

description:

In 1923 the sculptor Francesco Paolo Como (Taranto, 1888-Rome, 1973) wins the contest for the Monumento ai caduti in Taranto. As known, the realization of this work suffers many delays because of tension between the author and the various committees. Only in 1953, the last group, the Aquilifero, can be set up. The article analyses the sequence of events related to the monument through a series of missives between Como and his mentor Ettore Ferrari (Rome, 1845-1929). Through this correspondence is possible to write a clearer history of the monument and his author, explaining the reasons of Como’s anxiety, his relationship with Ferrari and his social role into the ‘fascistissima’ Taranto.

description: MDCCC 1800
Sonnenfleckenzeichnung Nr. 51.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 13.03.2015, 08:15, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 68.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.04.2015, 08:45, erstellt von Marco Cagnotti
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 2015

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Gradient estimates for solutions of the Lamé system with partially infinite coefficients
Creators: name: Bao, Jiguang
name: Li, Haigang
name: Li, Yanyan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We establish upper bounds on the blow up rate of the gradients of solutions of the Lamé system with partially infinite coefficients in dimension two as the distance between the surfaces of discontinuity of the coefficients of the system tends to zero.
description: 42 pages. The title is changed slightly, and some Korn inequalities are recalled for readers' convenience. to appear in Arch. Ration. Mech. Anal