427 research outputs found
LIPIcs, Volume 251, ITCS 2023, Complete Volume
LIPIcs, Volume 251, ITCS 2023, Complete Volum
From P.E. to Protests: the History of Dance Activism in Academia: 1920–2022
Title from PDF of title page, viewed June 15, 2023Dissertation advisor: Donna DavisVitaIncludes bibliographical references (pages 179-190)Dissertation (Ed.D.)--Department of Educational Leadership, Policy, and Foundations. University of Missouri--Kansas City, 2023Throughout history, dance has been regarded as an act of rebellion. This art form has persisted to become a means for the common person to demonstrate impassioned objections to issues from racism and religious oppression to communism, plastic waste, and human trafficking. As early as the plantation era, dance has provided a means of physical intervention throughout U.S. history. With its origins in departments of physical education, dance became a fixture in higher education—first as an artistic aesthetic, then as a weapon for battle. While much has been written about the history and development of dance in U.S. institutions of higher education and about the role of dance in American activism, little has been written about the history of how these roles emerged to exist in tandem. This historical study discusses the role of dance activism in higher education. Firstly, how dance has historically existed as the embodiment of opposition, followed by a discussion about how the introduction of dance into higher education served as a form of activism for women. This study delves into the social injustices that exist within and outside of the academy, as well as the historical events that have led to advances in thought and the practice of dance in higher education. The literature revealed that at every turn in the evolution of dance in higher education, there was activism.Introduction -- Early dance academe and activism (1920s-1970s) -- Here to stay - the solidification of dance in higher education (1970s-2000s) -- From the stage to the streets: dance activism in academia (2000-2022) -- Dance activism in higher education: current experiences, perspectives, and progressive thoughts -- The power of storie
The University of Montana: A History Through the Lens of Physical Culture, PE, Health, Athletics, and Recreation 1897-2019: The Evolution of a Department
https://scholarworks.umt.edu/burns/1000/thumbnail.jp
Linear programming bounds for hyperbolic surfaces
We adapt linear programming methods from sphere packings to closed hyperbolic
surfaces and obtain new upper bounds on their systole, their kissing number,
the first positive eigenvalue of their Laplacian, the multiplicity of their
first eigenvalue, and their number of small eigenvalues. Apart from a few
exceptions, the resulting bounds are the current best known both in low genus
and as the genus tends to infinity. Our methods also provide lower bounds on
the systole (achieved in genus to , , and ) that are sufficient
for surfaces to have a spectral gap larger than .Comment: v1: 53 pages, 6 plots, 7 tables, 20 ancillary files. v2: corrected a
mistake in one of the ancillary files, which changed some values in Table 3
and Figure 1(c
Anticodes and error-correcting for digital data transmission
The work reported in this thesis is an investigation in the field of error-control coding. This subject is concerned with increasing the reliability of digital data transmission through a noisy medium, by coding the transmitted data. In this respect, an extension and development of a method for finding optimum and near-optimum codes, using N.m digital arrays known as anticodes, is established and described. The anticodes, which have opposite properties to their complementary related error-control codes, are disjoined fron the original maximal-length code, known as the parent anticode, to leave good linear block codes. The mathematical analysis of the parent anticode and as a result the mathematical analysis of its related anticodes has given some useful insight into the construction of a large number of optimum and near-optimum anticodes resulting respectively in a large number of optimum and near-optimum codes. This work has been devoted to the construction of anticodes from unit basic (small dimension) anticodes by means of various systematic construction and refinement techniques, which simplifies the construction of the associated linear block codes over a wide range of parameters. An extensive list of these anticodes and codes is given in the thesis. The work also has been extended to the construction of anticodes in which the symbols have been chosen from the elements of the finite field GF(q), and, in particular, a large number of optimum and near-optimum codes over GF(3) have been found. This generalises the concept of anticodes into the subject of multilevel codes
Erd\H{o}s-Ko-Rado theorem in Peisert-type graphs
The celebrated Erd\H{o}s-Ko-Rado (EKR) theorem for Paley graphs (of square
order) states that all maximum cliques are canonical in the sense that each
maximum clique arises from the subfield construction. Recently, Asgarli and Yip
extended this result to Peisert graphs and other Cayley graphs which are
Peisert-type graphs with nice algebraic properties on the connection set. On
the other hand, there are Peisert-type graphs for which the EKR theorem fails
to hold. In this paper, we show that the EKR theorem of Paley graphs extends to
almost all pseudo-Paley graphs of Peisert-type. Furthermore, we establish the
stability results of the same flavor.Comment: 10 pages, typos correcte
LIPIcs, Volume 261, ICALP 2023, Complete Volume
LIPIcs, Volume 261, ICALP 2023, Complete Volum
Bioprospecção de fungos produtores de biosurfactantes e desenvolvimento de bioprocessos aplicados à micorremediação de solos contaminados com hidrocarbonetos
Environmental contamination by hydrocarbons and toxic metals is a global problem that harms
all living beings. Fungi are biological resources in bioprocesses development that may be used
in environmental remediation due to their ability to interact and/or produce metabolites that
favor interacting with the contaminant, e.g., biosurfactants. This work aimed to explore fungal
bioprocesses and bioproducts for environmental remediation and industrial applications and
begin biosurfactant production development by filamentous fungi. In this context, technicalscientific advances in developing fungal bioproducts for remediation of petroleum hydrocarbons and toxic metals were reviewed, as well as the main classes of biosurfactants and the
bioprocessing of fungal biosurfactants from the isolation of strains to their formulation into
commercial products. A culture collection of 58 fungi isolated from hydrocarbon-contaminated
soils (REMA/UFSC) was created. Strains were identified as Fusarium (n= 40), Penicillium (n=
8), Paecilomyces (n= 4), Scolecobasidium (n= 1), Scopulariopsis (n= 1) and Ilyonectria (n= 1),
using morphological characteristics and/or ITS region sequencing. These isolates and other
strains from contaminated soils (n = 7), Antarctic soils (n = 46), and mangrove plant endophytes
(n = 7) were bioprospecting for biosurfactant production by drop collapse test, emulsification
index, and tensiometry. These tests revealed the potential of Aspergillus sp. SC21P3, Fusarium
sp. AF99PD, Thelebolus sp. SC29P3, Paecilomyces sp. AF45D and Ilyonectria sp. AF25D for
drop collapse (>4 mm), and except the last two for tensiometry. The use of yeast extract (Medium X and Y) or NaNO3 (Medium N) at concentrations of 0.5 g•L
-1
(Medium X) and 5 g•L
-
1
(Medium Y and N) together with glucose (20 g•L
-1
) and soybean oil (0.5%) influenced the
surface activity of biosurfactants, as well as the kinetic profile of this production. In 168h, the
N medium composition promoted the highest surface tension reduction using inoculum Trichoderma sp. P05R2 (26.9 mN•m-1
) and RASC1B10122 (42.3 mN•m-1
), Pseudogymnoascus sp.
SC23P3 (36.2 mN•m-1
), Penicillium sp. SCUV02.P1(33.1 mN•m-1
), P10R6 (27 mN•m-1
),
AF38D (40.1 mN•m-1
) and AF41D (40.8 mN•m-1
) and Curvularia sp. ILRR1A20047 (37.7
mN•m-1
), while medium X for Buergenerula spartinae (40.6 mN•m-1). The results presented
in this study comprehensively show the potential of fungi in environmental remediation and/or
use in industrial bioprocesses, as well as reveal that bioprospecting led to the discovery of previously undescribed strains for biosurfactant production.A contaminação ambiental por hidrocarbonetos e metais tóxicos é um problema global que
acarreta danos a todos seres vivos. Os fungos sĂŁo recursos biolĂłgicos no desenvolvimento de
bioprocessos voltados a remediação ambiental, devido sua capacidade de interagir e/ou produzir metabólitos que favorecem a interação com o contaminante como, por exemplo, os biosurfactantes. Este trabalho objetivou explorar os bioprocessos e bioprodutos fúngicos para remediação ambiental e aplicações industriais, bem como iniciar o desenvolvimento de produção de
biosurfactantes por fungos filamentosos. Neste contexto, os avanços tĂ©cnicos-cientĂficos no desenvolvimento de bioprodutos fĂşngicos para remediação de hidrocarbonetos de petrĂłleo e metais tĂłxicos foram revisados, bem como as principais classes de biosurfactantes e o bioprocessamento de biosurfactantes fĂşngicos desde o isolamento de linhagens atĂ© a sua formulação em
produtos comerciais. Uma coleção de culturas de 58 fungos isolados de solos contaminados
com hidrocarbonetos (REMA/UFSC) foi criada, e linhagens foram identificados como Fusarium (n= 40), Penicillium (n= 8), Paecilomyces (n= 4), Scolecobasidium (n= 1), Scopulariopsis
(n= 1) e Ilyonectria (n= 1), usando caracterĂsticas morfolĂłgicas e/ou sequenciamento da regiĂŁo
ITS. Estes isolados e outros de solos contaminados (n = 7), solos antárticos (n= 46) e endofĂticos
de plantas de mangue (n = 7) foram bioprospectados para produção de biosurfactantes por meio
do teste colapso da gota, Ăndice de emulsificação e tensiometria. Estes testes revelaram o potencial de Aspergillus sp. SC21P3, Fusarium sp. AF99PD, Thelebolus sp. SC29P3, Paecilomyces sp. AF45D e Ilyonectria sp. AF25D para o colapso da gota (>4 mm), exceto as duas Ăşltimas
para tensiometria. O uso de extrato de levedura (Meio X e Y) ou NaNO3 (Meio N) nas concentrações de 0.5 g•L-1(Meio X) e 5 g•L-1(Meio Y e N) juntamente com glicose (20 g•L-1) e Ăłleo de soja (0,5%) influenciou na atividade de superfĂcie dos biosurfactantes, bem como o perfil cinĂ©tico desta produção. Em 168h, a composição do meio N promoveu as maiores reduções da tensĂŁo superficial usando como inĂłculos as linhagens Trichoderma sp. P05R2 (26,9 mN•m-1) e RASC1B10122 (42,3 mN•m-1), Pseudogymnoascus sp. SC23P3 (36,2 mN•m-1), Penicillium sp. SCUV02.P1(33,1 mN•m-1), P10R6 (27 mN•m-1), AF38D (40,1 mN•m-1) e AF41D (40,8 mN•m1) e Curvularia sp. ILRR1A20047 (37,7 mN•m-1), enquanto em meio X para Buergenerula spartinae (40,6 mN•m-1 ). Os resultados apresentados neste estudo mostram abrangentemente o potencial de fungos em remediação ambiental e/ou uso em bioprocessos industriais; bem como revela que a bioprospecção tem permitido a descobertas de linhagens anteriormente nĂŁo descritas para produção de biosurfactantes
Integrality and cutting planes in semidefinite programming approaches for combinatorial optimization
Many real-life decision problems are discrete in nature. To solve such problems as mathematical optimization problems, integrality constraints are commonly incorporated in the model to reflect the choice of finitely many alternatives. At the same time, it is known that semidefinite programming is very suitable for obtaining strong relaxations of combinatorial optimization problems. In this dissertation, we study the interplay between semidefinite programming and integrality, where a special focus is put on the use of cutting-plane methods. Although the notions of integrality and cutting planes are well-studied in linear programming, integer semidefinite programs (ISDPs) are considered only recently. We show that manycombinatorial optimization problems can be modeled as ISDPs. Several theoretical concepts, such as the Chvátal-Gomory closure, total dual integrality and integer Lagrangian duality, are studied for the case of integer semidefinite programming. On the practical side, we introduce an improved branch-and-cut approach for ISDPs and a cutting-plane augmented Lagrangian method for solving semidefinite programs with a large number of cutting planes. Throughout the thesis, we apply our results to a wide range of combinatorial optimization problems, among which the quadratic cycle cover problem, the quadratic traveling salesman problem and the graph partition problem. Our approaches lead to novel, strong and efficient solution strategies for these problems, with the potential to be extended to other problem classes
Facilitating meta-learning through yoga: supporting dance students' embodied learning
Facilitating meta-learning through yoga: supporting dance students' embodied learning is the title of the PhD-research project of yoga teacher and former dance artist Caroline Ribbers. In this project, she successfully designed a new yoga method for students of the Fontys Dance Academy in Tilburg. Central to the method is that it supports the students in developing their embodied learning, as this approach is often, at least initially, challenging for them. By engaging in meta-learning (or learning about learning) through yoga, students increase their understanding of and responsibility for their own embodied learning. This paves the way for a healthy and autonomous approach to dance training, which is a prerequisite for building a sustainable professional dance career.To develop the yoga method, educational design research was used as a basis. By integrating body-based methods such as yoga and meditation, the research eventually took the form of an embodied educational design research. Alongside the evidence-based yoga method, the study also yielded a refined set of educational design principles. These principles provide insight into the characteristics of the yoga method and guidelines for its design. They serve as inspiration for (dance) educators and other professionals interested in facilitating embodied learning, especially if they are curious about how to approach this through yoga and meta-learning. This research can also inspire researchers who want to explore the potential of embodied research methods in educational design research
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