cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Leadership for Transformation in Tourism Education
Creators: name: Schott, Christian
name: Gretzel, U
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: classificationCode: 3904
subject: Specialist studies in education
classificationCode: 3901
subject: Curriculum and pedagogy
classificationCode: 3508
subject: Tourism
subject: FOS: Economics and business
classificationCode: 3903
subject: Education systems

description: No description supplied
Ectaesthesius Rathbun 1898
Creators: name: Ng, Peter K. L.
name: Ahyong, Shane T.
name: Castro, Peter
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Xanthidae
Ectaesthesius

description: Ectaesthesius Rathbun, 1898
 Ectaesthesius Rathbun, 1898: 591, 1930: 460; Garth, 1946: 466; Balss, 1957: 1648; Ng et al., 2008: 202; Poore & Ahyong, 2023: 728, 729, 730, fig. 14.139b.
 Diagnosis. As for family.
 Type species. Ectaesthesius bifrons Rathbun, 1898, by monotypy.
 Remarks. See discussion for family.
description: Published as part of Ng, Peter K. L., Ahyong, Shane T. & Castro, Peter, 2023, Re-appraisal of the families and subfamilies of Trapezioidea Miers, 1886, with establishment of a new family, Ectaesthesiidae (Crustacea: Decapoda: Brachyura), pp. 606-631 in Raffles Bulletin of Zoology 71 on page 616, DOI: 10.26107/RBZ-2023-0047, http://zenodo.org/record/10271307
Nature-Based Social–Emotional Learning: An Exploratory Qualitative Study in Alberta
Creators: name: Pires, André Gonçalo Marques
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: social–emotional learning
subject: outdoor/environmental education
subject: qualitative research
subject: Educational Psychology

description: Research in psychology and education is beginning to show that nature-based learning (NBL)—learning about the natural world, in natural settings, or using natural elements indoors—promotes academic, social, and emotional learning by improving learners’ attention, self-discipline, and enjoyment in learning, along with opportunities for experiencing empathy, engaging in teamwork, and fostering environmental stewardship. Social–emotional learning (SEL) entails how individuals acquire and apply the knowledge, skills, and attitudes to develop healthy identities, manage emotions, achieve personal and collective goals, feel and show empathy for others, establish and maintain supportive relationships, and make responsible and caring decisions. The state of the evidence points to complementary effects between NBL and SEL, including in developing perseverance, self-efficacy, and resilience, and in promoting emotion regulation, social skills, and responsible and ethical behaviour such as environmental stewardship. However, little research has examined the intentional integration of these two fields, or what may be called nature-based social–emotional learning (NBSEL). Using an exploratory-descriptive qualitative design, this study interviewed a sample of Alberta teachers to explore how they are currently using NBL to promote SEL in K–12 students, as well as barriers and advice to doing this work. This study presents exploratory and preliminary findings on a variety of NBL practices and principles that have helped in fostering students’ SEL. Teachers have experienced unique challenges in delivering NBSEL, but they recommended several actions to overcome any barriers and to begin or advance this work. With its contextualized perspectives from educators who are currently practicing NBSEL in Alberta, this study opens avenues and creates a foundation for future research on NBSEL. Strengths and limitations are discussed, along with implications for practice and directions for future research.
Genericity aspects in gravitational collapse to black holes and naked singularities
Creators: name: Joshi, Pankaj S.
name: Malafarina, Daniele
name: Saraykar, Ravindra V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate here the genericity and stability aspects for naked singularities and black holes that arise as the final states for a complete gravitational collapse of a spherical massive matter cloud. The form of the matter considered is a general Type I matter field, which includes most of the physically reasonable matter fields such as dust, perfect fluids and such other physically interesting forms of matter widely used in gravitation theory. We first study here in some detail the effects of small pressure perturbations in an otherwise pressure-free collapse scenario, and examine how a collapse evolution that was going to the black hole endstate would be modified and go to a naked singularity, once small pressures are introduced in the initial data. This allows us to understand the distribution of black holes and naked singularities in the initial data space. Collapse is examined in terms of the evolutions allowed by Einstein equations, under suitable physical conditions and as evolving from a regular initial data. We then show that both black holes and naked singularities are generic outcomes of a complete collapse, when genericity is defined in a suitable sense in an appropriate space.
description: 24 pages, 6 figures, some changes in text and figures to match the version accepted for publication by IJMPD
Jet Physics from Static Charges in AdS
Creators: name: Chien, Yang-Ting
name: Schwartz, Matthew D.
name: Simmons-Duffin, David
name: Stewart, Iain W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Soft interactions with high-energy jets are explored in radial coordinates which exploit the approximately conformal behavior of perturbative gauge theories. In these coordinates, the jets, approximated by Wilson lines, become static charges in Euclidean AdS. The anomalous dimension of the corresponding Wilson line operator is then determined by the potential energy of the charges. To study these Wilson lines we introduce a "conformal gauge" which does not have kinetic mixing between radial and angular directions, and show that a number of properties of Wilson lines are reproduced through relatively simple calculations. For example, certain non-planar graphs involving multiple Wilson lines automatically vanish. We also discuss the linear growth of the charges' imaginary potential energy with separation, and a relationship between Wilson line diagrams and Witten diagrams.
description: 34 pages, 7 figures; V2: minor edits, added references
Re(writing) the rule of law : text and expertise in humanitarian intervention
Creators: name: Bruch, Elizabeth Marie
Publisher: name: University of British Columbia
Year: 2012

description: This dissertation examines humanitarian intervention through the texts and experts of human rights field work in inter-governmental organization (IGO) missions in conflict and post-conflict situations. Humanitarian intervention, understood as coercive collective intervention by the ‘international community’ against a state to protect the population(s) within that state, is one of the most challenging and controversial issues in international law and policy today. Humanitarian intervention involves the exercise of geo-political and institutional power, and it requires the massive mobilization of personnel and resources from around the world in complex and on-going projects of peacekeeping and nation building. Although humanitarian intervention is largely justified in the name of human rights and the rule of law, there has been little empirical study of the institutions and individuals conducting the work of human rights and the rule of law in contexts of intervention. Human rights field officers are primary actors as translators, instructors, advocates and practitioners of the rule of law in the field of humanitarian intervention. This research uses an approach of Institutional Ethnography, informed by Actor-Network Theory, to understand the dynamics of human rights field work in IGO field missions. Its approach is to trace relations of power in humanitarian intervention through an empirical investigation into how law is constituted, deployed, adapted, and redefined in human rights field work. This project relies upon in-depth interviews with human rights field officers and analysis of three central categories of texts – international treaties, UN Security Council resolutions, and human rights field reports. This research examines law in the everyday context, but in humanitarian intervention that context is an exceptional one, and both law and expertise take on particular significance in the field. The texts of law cross temporal and spatial scales to establish normative frameworks, create institutions, deploy personnel, and assess outcomes. The experts deployed to the field are uniquely empowered as impartial outsiders, even as they are connected to and imbricated in larger networks of rule. Close consideration of the texts of international law and the everyday work of field officers offers important insights into this emerging exercise of institutional and global governance.
Twisted forms of classical groups
Creators: name: Voronetsky, Egor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 14L35

description: We give a unified description of twisted forms of classical reductive groups schemes. Such group schemes are constructed from algebraic objects of finite rank, excluding some exceptions of small rank. These objects, augmented odd form algebras, consist of $2$-step nilpotent groups with an action of the underlying commutative ring, hence we develop basic descent theory for them. In addition, we describe classical isotropic reductive groups as odd unitary groups up to an isogeny.
description: We added a description of classical isotropic reductive groups via odd form algebras
On the shape-from-moments problem and recovering edges from noisy Radon data
Creators: name: Goldenshluger, Alexander
name: Spokoiny, Vladimir
Publisher: name: Weierstrass Institute
Year: 2002
Subjects: subject: minimax estimation
subject: optimal rates of convergence
subject: shape
subject: moments
subject: support function
subject: Radon transform
subject: tomography
subject: 62C20
subject: 62G20
subject: 94A12

description: We consider the problem of reconstructing a planar convex set from noisy observations of its moments. An estimation method based on pointwise recovering of the support function of the set is developed. We study intrinsic accuracy limitations in the shape-from-moments estimation problem by establishing a lower bound on the rate of convergence of the mean squared error. It is shown that the proposed estimator is near-optimal in the sense of the order. An application to tomographic reconstruction is discussed, and it is indicated how the proposed estimation method can be used for recovering edges from noisy Radon data.
Analytic Study for the String Theory Landscapes via Matrix Models
Creators: name: Chan, Chuan-Tsung
name: Irie, Hirotaka
name: Yeh, Chi-Hsien
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We demonstrate a first-principle analysis of the string theory landscapes in the framework of non-critical string/matrix models. In particular, we discuss non-perturbative instability, decay rate and the true vacuum of perturbative string theories. As a simple example, we argue that the perturbative string vacuum of pure gravity is stable; but that of Yang-Lee edge singularity is inescapably a false vacuum. Surprisingly, most of perturbative minimal string vacua are unstable, and their true vacuum mostly does not suffer from non-perturbative ambiguity. Importantly, we observe that the instability of these tachyon-less closed string theories is caused by ghost D-instantons (or ghost ZZ-branes), the existence of which is determined only by non-perturbative completion of string theory.
description: v1: 5 pages, 2 figures; v2: references and footnote added; v3: 7 pages, 4 figures, organization changed, explanations expanded, references added, reconstruction program from arbitrary spectral curves shown explicitly
MPEC 2024-S46 : 2024 SK
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 SK

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
3.5_WP3 ISSR Technical Report 2_May2023_first-version (1)
Creators: name: Tomaszewski, Wojtek
name: KUBLER, Matthias
name: Tomasz, Zajac
Publisher: name: Zenodo
Year: 2023

description: Information in this report is divided into two main parts. The first one (Section 2) focuses on
survey data to be augmented with information about places drawn from the Australian Bureau
of Statistics (ABS) Census. The second part of the report (Sections 3 through 5) focuses on conceptual, methodological, and   issues related to linking area-based data (e.g., derived from the Census) to person level
data and using spatial characteristics as predictors in the analysis of individual outcomes.1
Kompetenzmonitor OpenBiblioJobs
Creators: name: Blümel, Ina
name: Heller, Lambert
name: Hermes, Jürgen
name: Tu, Pascal Ngoc Phu
name: Witt, Andreas
name: Zellmann, Cedrik
Publisher: name: Zenodo
Year: 2019
Subjects: Openbibliojobs
Skill Analytics
Data Mining
Open Science

description: Idee für die Weiterentwicklung des Stellenanzeigen-Portals OpenBiblioJobs incl. Skizze für ein Einjahresprojekt:

	Aufbau einer offenen Datenbasis strukturierter Informationen aus Stellenanzeigen, die für weitere Forschungs- und Entwicklungsvorhaben nachgenutzt werden kann

	Visualisierung der in bibliothekarischen Stellenangeboten enthaltenen Informationen, insbesondere der gefragten Kompetenzen, um unterschiedliche Nutzergruppen und Fragestellungen zu unterstützen und unter anderem dabei zu helfen, Open Science und die Digitalisierung der Wissenschaft als einen Aspekt veränderter Arbeitsweisen besser zu verstehen

	Konzeption und Erprobung des Workflows von Harvesting, Analyse, Informationsextraktion und Visualisierung

	Langfristige Ermöglichung einer fortlaufenden automatischen Analyse der in Openbibliojobs gelisteten Stellenanzeigen-Volltexte hinsichtlich geforderter Qualifikation sowie Visualisierung der Änderung von geforderten Kompetenzen

	Online-Veröffentlichung mit Visualisierung und Kommentierung der Ergebnisse unter einigen ausgewählten Hauptaspekten, mit dem Ziel, den Wandel der Infrastruktur angesichts sich wandelnder wissenschaftlicher Arbeitsweisen besser verständlich zu machen
Additional file 1: of Prevalence of insomnia symptoms and their associated factors in patients treated in outpatient clinics of four general hospitals in Guangzhou, China
Creators: name: Zheng, Wei
name: Luo, Xin-Ni
name: Li, Hai-Yan
name: Ke, Xiao-Yin
name: Dai, Qing
name: Zhang, Chan-Juan
name: Ng, Chee
name: Ungvari, Gabor
name: Xiang, Yu-Tao
name: Ning, Yu-Ping
Publisher: name: figshare
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology
subject: Computational Biology

description: The number of patients from the four outpatient clinics. (DOCX 31 kb)
Model For Polygonal Hydraulic Jumps
Creators: name: Martens, Erik A.
name: Watanabe, Shinya
name: Bohr, Tomas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Dynamical Systems (math.DS)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We propose a phenomenological model for the polygonal hydraulic jumps discovered by Ellegaard et al., based on the known flow structure for the type II hydraulic jumps with a "roller" (separation eddy) near the free surface in the jump region. The model consists of mass conservation and radial force balance between hydrostatic pressure and viscous stresses on the roller surface. In addition, we consider the azimuthal force balance, primarily between pressure and viscosity, but also including non-hydrostatic pressure contributions from surface tension in light of recent observations by Bush et al. The model can be analyzed by linearization around the circular state, resulting in a parameter relationship for nearly circular polygonal states. A truncated, but fully nonlinear version of the model can be solved analytically. This simpler model gives rise to polygonal shapes that are very similar to those observed in experiments, even though surface tension is neglected, and the condition for the existence of a polygon with N corners depends only on a single dimensionless number ϕ. Finally, we include time-dependent terms in the model and study linear stability of the circular state. Instability occurs for suffciently small Bond number and the most unstable wave length is expected to be roughly proportional to the width of the roller as in the Rayleigh-Plateau instability.
description: 17 pages; Phys. Rev. E (2012)
Factors that Influence Adequacy of Bowel Preparation in Inpatients Undergoing Colonoscopy: A Scoping Review Protocol
Creators: name: Marchildon, Marianne
name: Jackson, Jennifer
name: Hayden, Alix
name: Rankin, Janet
Publisher: name: Nursing
Year: 2023
Subjects: Colonoscopies
Bowel preparation
Inpatient

description: Objective: The objective of this scoping review is to examine the extent and type of research related to the rate of adequate bowel preparation in adult inpatients undergoing colonoscopy. Our intent is to establish an understanding the factors, both modifiable and non-modifiable, that influence the rate of adequate bowel preparation hospitalized patients undergoing colonoscopy. Introduction: Adequate bowel cleansing is necessary to perform successful colonoscopies, detect adenomas, and identify sources of gastrointestinal bleeding. Inpatients, however, experience a higher-than-average rate of inadequate bowel preparation leading to cancelled procedures, increased stress for the patient, increased time in hospital, and increased cost to the healthcare system. Inclusion criteria: This scoping review will consider all studies examining factors that influence the adequacy of bowel preparation in adult inpatients 18 years and older undergoing colonoscopy who have been admitted to hospital as inpatients. Studies published in English between 2000 and 2023 will be included. Methods: An initial search of MEDLINE, CINAHL, SCOPUS, and EMBASE was undertaken to identify seed articles, followed by a systematic search using keywords and subject headings. Study abstracts will be independently screened by two reviewers against inclusion criteria. Discrepancies will be resolved by consensus. Data extraction will be performed in tabular form and include data related to modifiable and non-modifiable factors that influence bowel preparation in adult inpatients.
SARS-CoV-2 virus RNA sequence classification and geographical analysis with convolutional neural networks approach
Creators: name: Yazar, Selcuk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Covid-19 infection, which spread to the whole world in December 2019 and is still active, caused more than 250 thousand deaths in the world today. Researches on this subject have been focused on analyzing the genetic structure of the virus, developing vaccines, the course of the disease, and its source. In this study, RNA sequences belonging to the SARS-CoV-2 virus are transformed into gene motifs with two basic image processing algorithms and classified with the convolutional neural network (CNN) models. The CNN models achieved an average of 98% Area Under Curve(AUC) value was achieved in RNA sequences classified as Asia, Europe, America, and Oceania. The resulting artificial neural network model was used for phylogenetic analysis of the variant of the virus isolated in Turkey. The classification results reached were compared with gene alignment values in the GISAID database, where SARS-CoV-2 virus records are kept all over the world. Our experimental results have revealed that now the detection of the geographic distribution of the virus with the CNN models might serve as an efficient method.
Airflow Loading Patterns for Truck Shipments of Early Potatoes
Creators: name: Hinds, Russell H.
name: Robertson, J. Kenneth
name: Hinds, Russell H.
name: Robertson, J. Kenneth
Publisher: name: Unknown
Year: 1965
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Research and Development/Tech Change/Emerging Technologies

description: Report Highlights: During three seasons, five airflow loading patterns were developed for bagged potatoes shipped by motortruck. These patterns use a single basic design for improving air circulation by providing a number of continuous longitudinal channels through the load. Data from test shipments showed that when the trucks operated at approximately 50 miles per hour under ventilation, the average velocity of air ranged from 141 feet per minute to 274 f.p.m. in the circulation channels and from 280 f.p.m. to 472 f.p.m. over the top of the load. Air movement through the channels provided by the stacking pattern caused temperatures throughout the load to change directly with the ambient (outside air) temperature. The air moving through the channels sometimes made it possible to remove excess moisture from damp potatoes. These patterns are easy to load in any size vehicle and provide the trucker a full payload with proper weight distribution. The patterns are stable, remaining intact during transit, and do not increase damage to containers or product.
Tourism's Imperative for Global Citizenship
Creators: name: Caton, K
name: Schott, Christian
name: Daniele, R
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: classificationCode: 35
subject: Commerce, management, tourism and services
classificationCode: 39
subject: Education
classificationCode: 3901
subject: Curriculum and pedagogy
classificationCode: 3508
subject: Tourism
subject: FOS: Economics and business
classificationCode: 3903
subject: Education systems
classificationCode: 3904
subject: Specialist studies in education

description: No description supplied
Mitigation of nutrient leaching from bioretention systems using amendments
Creators: name: Zhang, Yihui
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: Bioretention
subject: Nutrient leaching
subject: Amendments
subject: Environmental Sciences
subject: Engineering--Environmental

description: Bioretention systems have been showcased to be effective in reducing stormwater quantity and improving stormwater quality. However, the systems can also leach nutrients, especially during their initial operation, which needs to be mitigated to optimize their benefits. To examine the efficiency of six amendments selected primarily for reducing phosphorus (P) leaching, six amended and two control cells were constructed and monitored soon after their construction in the field of the 2020 growing season. The effects of the amendments on both the hydrological performance (in terms of water retention rate (WRR)) and water quality performance (in terms of the event mean concentration and pollutant removal rate) were investigated. The results showed that all amendments had the capability of preventing or mitigating P leaching from bioretention systems to varying degrees, with the water treatment residual (WTR) outperforming all other amendments, followed by the activated aluminum (AA) and sorptiveMEDIA (SM) amendments. In addition, some of the amendments (i.e., drywall (DRY), WTR, and SM) were also found to be beneficial in reducing the nitrogen (N) leaching to a slight degree, whereas eggshell (EGG) introduced an extra source of N leached. Furthermore, the temporal evolution of the P leaching of the amendment cells was found to be different from that of the control cells. The same result was not observed for the temporal evolution of the N leaching, implying that the amendments (except EGG) did not largely affect the N leaching. Among the amendments’ effect on WRR, there was no obvious difference. Whereas the observed differences between the control cells and some amendment cells in vegetation growth and antecedent media moisture condition might imply their potential impacts on the hydrologic performance. Overall, other than P leaching, the use of amendments affected other functions of bioretention systems, which should be taken into consideration when selecting an amendment for practice.
Emergent stability in complex network dynamics
Creators: name: Meena, Chandrakala
name: Hens, Chittaranjan
name: Acharyya, Suman
name: Haber, Simcha
name: Boccaletti, Stefano
name: Barzel, Baruch
Publisher: name: arXiv
Year: 2020
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: The stable functionality of networked systems is a hallmark of their natural ability to coordinate between their multiple interacting components. Yet, strikingly, real-world networks seem random and highly irregular, apparently lacking any design for stability. What then are the naturally emerging organizing principles of complex-system stability? Encoded within the system's stability matrix, the Jacobian, the answer is obscured by the scale and diversity of the relevant systems, their broad parameter space, and their nonlinear interaction mechanisms. To make advances, here we uncover emergent patterns in the structure of the Jacobian, rooted in the interplay between the network topology and the system's intrinsic nonlinear dynamics. These patterns help us analytically identify the few relevant control parameters that determine a system's dynamic stability. Complex systems, we find, exhibit discrete stability classes, from asymptotically unstable, where stability is unattainable, to sensitive, in which stability abides within a bounded range of the system's parameters. Most crucially, alongside these two classes, we uncover a third class, asymptotically stable, in which a sufficiently large and heterogeneous network acquires a guaranteed stability, independent of parameters, and therefore insensitive to external perturbation. Hence, two of the most ubiquitous characteristics of real-world networks - scale and heterogeneity - emerge as natural organizing principles to ensure stability in the face of changing environmental conditions.
Double-Lepton Polarization Asymmetries and Branching Ratio of the $B\rar γl^+ l^- $ transition in Universal Extra Dimension
Creators: name: Azizi, K.
name: Pak, N. K.
name: Sirvanli, B. B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the radiative dileptonic $B \rar γl^+ l^- $ transition in the presence of a universal extra dimension in the Applequist-Cheng-Dobrescu model. In particular, using the corresponding form factors calculated via light cone QCD sum rules, we analyze the branching ratio and double lepton polarization asymmetries related to this channel and compare the results with the predictions of the standard model. We show how the results deviate from predictions of the standard model at lower values of the compactification factor ($1/R $) of extra dimension.
description: 20 Pages and 8 Figures
Identification of genes and interactions involved in syntrophic biodegradation under methanogenic conditions
Creators: name: Goldsmith, Ciara Ayame
Publisher: name: Graduate Studies
Year: 2023
Subjects: subject: hydrocarbon biodegradation
subject: syntrophy
subject: methanogenesis
subject: environmental microbiology
subject: petroleum microbiology
subject: metatranscriptomics
subject: metagenomics
subject: Microbiology
subject: FOS: Biological sciences
subject: Energy
subject: Environmental Sciences
subject: Biology--Molecular

description: Biodegradation, or the breakdown of pollutants by microorganisms, occurs in many global environments. Hydrocarbon biodegradation can be carried out by a diverse range of microorganisms, such as sulfate reducing microorganisms (SRM), and methanogens. Syntrophy, or the partnership of two species to metabolize a substrate despite an energetic barrier, is a dominant metabolic process in many environments where hydrocarbon biodegradation occurs. Understanding the syntrophic interactions that occur within microbial communities is important, since there is a possibility of uncovering novel microbial mechanisms and devise potential industrial applications. There is still much to be discovered about the specific interactions that occur within syntrophic partnerships, which is what this thesis project aimed to investigate. Metatranscriptomics was used to determine how gene expression changed when a bacterium maintained a syntrophic lifestyle, compared to an independent lifestyle in a pure culture. Co-cultures of the marine SRM Desulfatibacillum alkenivorans strain AK01 and either the methanogen Methanospirillum hungatei strain JF-1, or the marine methanogen Methanococcus maripaludis strain S2 were established. The differential gene expression analysis revealed that certain genes believed to be associated with syntrophic metabolic pathways and energy conservation were upregulated in both lactate-amended co-cultures. An additional contaminant organism within the cultures, Anaerovirgula multivorans, also may act as a syntroph based on gene expression and chemical activity data. Additionally, a co-occurrence network analysis was performed on eight mixed methanogenic hydrocarbon degrading consortia amended with different substrates. Multiple networks containing potential syntrophic organisms and methanogens were present, which could be used to establish future co-culture experiments.
Computing Multiplicities of Lie Group Representations
Creators: name: Christandl, Matthias
name: Doran, Brent
name: Walter, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computational Complexity (cs.CC)
subject: Representation Theory (math.RT)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: For fixed compact connected Lie groups H \subseteq G, we provide a polynomial time algorithm to compute the multiplicity of a given irreducible representation of H in the restriction of an irreducible representation of G. Our algorithm is based on a finite difference formula which makes the multiplicities amenable to Barvinok's algorithm for counting integral points in polytopes. The Kronecker coefficients of the symmetric group, which can be seen to be a special case of such multiplicities, play an important role in the geometric complexity theory approach to the P vs. NP problem. Whereas their computation is known to be #P-hard for Young diagrams with an arbitrary number of rows, our algorithm computes them in polynomial time if the number of rows is bounded. We complement our work by showing that information on the asymptotic growth rates of multiplicities in the coordinate rings of orbit closures does not directly lead to new complexity-theoretic obstructions beyond what can be obtained from the moment polytopes of the orbit closures. Non-asymptotic information on the multiplicities, such as provided by our algorithm, may therefore be essential in order to find obstructions in geometric complexity theory.
description: 10 pages
Shortest Watchman Tours in Simple Polygons under Rotated Monotone Visibility
Creators: name: Nilsson, Bengt J.
name: Orden, David
name: Palios, Leonidas
name: Seara, Carlos
name: Żyliński, Paweł
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences

description: We present an $O(nrG)$ time algorithm for computing and maintaining a minimum length shortest watchman tour that sees a simple polygon under monotone visibility in direction $θ$, while $θ$ varies in $[0,180^{\circ})$, obtaining the directions for the tour to be the shortest one over all tours, where $n$ is the number of vertices, $r$ is the number of reflex vertices, and $G\leq r$ is the maximum number of gates of the polygon used at any time in the algorithm.
description: 18 pages, 3 figures, an extended abstract will appear in Proceedings of COCOON 2020 (Lecture Notes in Computer Science)
Academic Integrity in an Age of Educational Transformation (or_ Why Robots Won't Inherit the Earth)
Creators: name: Eaton, Sarah
Publisher: name: University of Calgary Conference on Postsecondary Learning and Teaching
Year: 2023
Subjects: academic integrity
assessment
teaching
Artificial intelligence

description: Join us for an interactive session in which you, the participants, will share ideas and effective practices about what works to help students (1) understand what academic integrity is; (2) analyze which aspects of academic integrity need to transform in the age of artificial intelligence, which remain constant, and why; and (3) connect academic integrity to ethical-decision making in daily life beyond the classroom. There is no magic bullet to ensure that students uphold academic integrity and there is no “one size fits all” approach. Instead, in this facilitated session, we share ideas, resources, and tips that can be used in different contexts. You will come away having been inspired by academic and professional peers with concrete ideas to apply in their own teaching practice. Most of all, you may find fears about threats to academic integrity from emerging technologies diminished. By the end of this session engaged participants will: • Understand the connection between academic integrity in the classroom and ethical-decision making in daily life. • Analyze the impact of transformative technologies such as artificial intelligence on teaching, learning, assessment, and academic integrity. • Gain new strategies and ideas to use in teaching and assessment.
Reducing Costs of Packing Mature-Green Tomatoes at Florida Shipping Points
Creators: name: Grizzell, William G.
name: Grizzell, William G.
Publisher: name: Unknown
Year: 1965
Subjects: subject: Crop Production/Industries
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies

description: Excerpt from the report: A study was made to determine the labor and equipment requirements and costs of the present system of packing mature-green tomatoes and to develop more efficient systems of packing. These systems were developed around work methods now in use in Florida packinghouses. For purposes of comparison in this report, a packinghouse packing an annual volume of 12 million pounds of mature-green tomatoes (200,000 60-pound boxes or 300,000 40-pound boxes) with a 31-man crew was taken as being representative of the present packing system.
Graded Semigroups
Creators: name: Hazrat, Roozbeh
name: Mesyan, Zachary
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M10, 18B40, 20M18 (primary), 20M17, 20M25, 20M50 (secondary)

description: We systematically develop a theory of graded semigroups, that is semigroups S partitioned by groups G, in a manner compatible with the multiplication on S. We define a smash product S#G, and show that when S has local units, the category S#G-Mod of sets admitting an S#G-action is isomorphic to the category S-Gr of graded sets admitting an appropriate S-action. We also show that when S is an inverse semigroup, it is strongly graded if and only if S-Gr is naturally equivalent to S_1-Mod, where S_1 is the partition of S corresponding to the identity element 1 of G. These results are analogous to well-known theorems of Cohen/Montgomery and Dade for graded rings. Moreover, we show that graded Morita equivalence implies Morita equivalence for semigroups with local units, evincing the wealth of information encoded by the grading of a semigroup. We also give a graded Vagner-Preston theorem, provide numerous examples of naturally-occurring graded semigroups, and explore connections between graded semigroups, graded rings, and graded groupoids. In particular, we introduce graded Rees matrix semigroups, and relate them to smash product semigroups. We pay special attention to graded graph inverse semigroups, and characterise those that produce strongly graded Leavitt path algebras.
description: 47 pages. The final version has improvements in the exposition and typo corrections
The Role of Intentional Equity and Care in Collective Transformation
Creators: name: Bali, Maha
Publisher: name: University of Calgary Conference on Postsecondary Learning and Teaching
Year: 2023
Subjects: teaching
equity
care
relationship
teacher
student

description: In education, change often comes to us either as a crisis "shock" (like COVID, or ChatGPT) or a slower "slide" (like the return to in-person teaching after many months of remote for many around the world). It is our responsibility as educators and educational institutions to "harness the shocks and direct the slides" (adrienne maree brown, 2017, p. 80). In this session, we explore the importance of centering equity and care in our approaches to addressing institutional change in order to create sustainable collective transformation that includes all stakeholders in the educational process, especially the most marginalized. We will discuss the micro-elements like relationships among teachers and their students, as well as the systemic elements and allyships that are necessary for our strategies to be truly transformative and cultivate socially just care.
A hierarchical spatio-temporal model to analyze relative risk variations of COVID-19: a focus on Spain, Italy and Germany
Creators: name: Jalilian, Abdollah
name: Mateu, Jorge
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: 62M30, 62M10, 91G70

description: The novel coronavirus disease (COVID-19) has spread rapidly across the world in a short period of time and with a heterogeneous pattern. Understanding the underlying temporal and spatial dynamics in the spread of COVID-19 can result in informed and timely public health policies. In this paper, we use a spatio-temporal stochastic model to explain the temporal and spatial variations in the daily number of new confirmed cases in Spain, Italy and Germany from late February to mid September 2020. Using a hierarchical Bayesian framework, we found that the temporal trend of the epidemic in the three countries rapidly reached their peaks and slowly started to decline at the beginning of April and then increased and reached their second maximum in August. However decline and increase of the temporal trend seems to be sharper in Spain and smoother in Germany. The spatial heterogeneity of the relative risk of COVID-19 in Spain is also more pronounced than Italy and Germany.
description: 20 pages, 4 figures
Probing background ionization: Positive streamers with varying pulse repetition rate and with a radioactive admixture
Creators: name: Nijdam, S.
name: Wormeester, G.
name: van Veldhuizen, E. M.
name: Ebert, U.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Positive streamers need a source of free electrons ahead of them to propagate. A streamer can supply these electrons by itself through photo-ionization, or the electrons can be present due to external background ionization. Here we investigate the effects of background ionization on streamer propagation and morphology by changing the gas composition and the repetition rate of the voltage pulses, and by adding a small amount of radioactive Krypton 85. We find that the general morphology of a positive streamer discharge in high purity nitrogen depends on background ionization: at lower background ionization levels the streamers branch more and have a more feather-like appearance. This is observed both when varying the repetition rate and when adding Krypton 85, though side branches are longer with the radioactive admixture. But velocities and minimal diameters of streamers are virtually independent of the background ionization level. In air, the inception cloud breaks up into streamers at a smaller radius when the repetition rate and therefore the background ionization level is higher. When measuring the effects of the pulse repetition rate and of the radioactive admixture on the discharge morphology, we found that our estimates of background ionization levels are consistent with these observations; this gives confidence in the estimates. Streamer channels generally do not follow the paths of previous discharge channels for repetition rates of up to 10 Hz. We estimate the effect of recombination and diffusion of ions and free electrons from the previous discharge and conclude that the old trail has largely disappeared at the moment of the next voltage pulse; therefore the next streamers indeed cannot follow the old trail.
description: 30 pages, 13 figures
Tropical time series, iterated-sums signatures and quasisymmetric functions
Creators: name: Diehl, Joscha
name: Ebrahimi-Fard, Kurusch
name: Tapia, Nikolas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 60L10, 60L70, 16Y60, 93C55

description: Aiming for a systematic feature-extraction from time series, we introduce the iterated-sums signature over arbitrary commutative semirings. The case of the tropical semiring is a central, and our motivating example. It leads to features of (real-valued) time series that are not easily available using existing signature-type objects. We demonstrate how the signature extracts chronological aspects of a time series, and that its calculation is possible in linear time. We identify quasisymmetric expressions over semirings as the appropriate framework for iterated-sums signatures over semiring-valued time series.
description: fix notational errors, clarify certain proofs
Ungrading and Alternative Assessment
Creators: name: Stommel, Jesse
Publisher: name: University of Calgary Conference on Postsecondary Learning and Teaching
Year: 2023
Subjects: LGBTQ2S+
grading
assessment
pedagogy
diversity

description: "Ungrading" means raising an eyebrow at grades as a systemic practice, distinct from simply not grading. The word is a present participle, an ongoing process, not a static set of practices. Too many of our approaches to grades treat students like they’re interchangeable and fail to recognize their complexity. Can we imagine flexible approaches to assessment, pedagogies which center intrinsic more than extrinsic motivation, encouraging and supporting learning, rather than policing behavior? We have to design to ensure a focus on equity, diversity, inclusion and accessibility, especially for those who identify within equity-deserving groups, including women, Indigenous peoples, visible/racialized minorities, persons with disabilities, and people who identify as LGBTQ2S+. This workshop will balance presentation with practical activities and discussion.
Bounding the forward classical capacity of bipartite quantum channels
Creators: name: Ding, Dawei
name: Khatri, Sumeet
name: Quek, Yihui
name: Shor, Peter W.
name: Wang, Xin
name: Wilde, Mark M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We introduce various measures of forward classical communication for bipartite quantum channels. Since a point-to-point channel is a special case of a bipartite channel, the measures reduce to measures of classical communication for point-to-point channels. As it turns out, these reduced measures have been reported in prior work of Wang et al. on bounding the classical capacity of a quantum channel. As applications, we show that the measures are upper bounds on the forward classical capacity of a bipartite channel. The reduced measures are upper bounds on the classical capacity of a point-to-point quantum channel assisted by a classical feedback channel. Some of the various measures can be computed by semi-definite programming.
description: v3: 29 pages, 6 figures, final version accepted for publication in IEEE Transactions on Information Theory
Spin-Peierls Quantum Phase Transitions in Coulomb Crystals
Creators: name: Bermudez, A.
name: Plenio, M. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The spin-Peierls instability describes a structural transition of a crystal due to strong magnetic interactions. Here we demonstrate that cold Coulomb crystals of trapped ions provide an experimental testbed in which to study this complex many-body problem and to access extreme regimes where the instability is triggered by quantum fluctuations alone. We present a consistent analysis based on different analytical and numerical methods, and provide a detailed discussion of its feasibility on the basis of ion-trap experiments. Moreover, we identify regimes where this quantum simulation may exceed the power of classical computers.
description: slightly longer than the published version