Whiff of Black Ice

This document is a concentration of thoughts, peripheral and direct, that occurred around the making of my thesis exhibition at the Anderson Gallery, Whiff Of Black Ice. While these thoughts meekly occupy space on the following pages, I assure the reader that they are quite physical, even extending three-dimensionality to them. My awareness of their form and their containment within the inner space of the mind, which also extends to the body, becomes central to understanding their meaning and, finally, knowing them

North America\u27s Most Ambitious No-Fault Law: Quebec\u27s Auto Insurance Act

In this Article, the authors describe the Automobile Insurance Act of Quebec, its provisions for damages, and its exceptions

Stepping Off The Conveyor Belt: Gap Year Effects on the First Year College Experience

Thesis advisor: Karen D. ArnoldTaking a gap year between high school and college has become more common in the United States in recent years, yet little research attempts to describe or analyze the experience of the students who arrive on college campuses after such a year out. This qualitative study followed 12 first-year students attending highly-selective private institutions in the northeastern U.S. as they experienced the transitions from high school to gap year to college. With varying levels of family support and high levels of personal motivation, the students participated in a wide range of gap-year endeavors. The findings indicate that students were heavily influenced by their encounters during the gap year, leading to strong evidence of self-authorship among the participants, which in turn shaped the way students pursued their goals when they arrived at college. Particularly influential were encounters that involved independent problem-solving, participating in multigenerational relationships, and immersion in new cultural settings. The students' transitions to college during the first year were marked by patterns of Sovereign Engagement with regard to learning, relationships, and decision-making. Commonly marked by internalized goals, authenticity in relationships, and greater individual agency, "Sovereign Engagement" captures the self-authored perspective that these students brought to their college experience. Contrary to suggestions in the popular media, not all gap-year students found the transition to be seamless; nor were they uniformly motivated to earn good grades. As a summary of the findings, the Gap Year Impact Model provides an important frame of reference for understanding the experiences, needs, and sovereign decision-making patterns of gap-year students. The results offer students, parents, colleges and universities an introduction to the lived experiences of gap-year students, who are arriving on campus in increasing numbers each year.Thesis (PhD) — Boston College, 2015.Submitted to: Boston College. Lynch School of Education.Discipline: Educational Leadership and Higher Education

Conformal and non-conformal hyperloop deformations of the 1/2 BPS circle

We construct new large classes of BPS Wilson hyperloops in three-dimensional N=4 quiver Chern-Simons-matter theory on S3. The main strategy is to start with the 1/2 BPS Wilson loop of this theory, choose any linear combination of the supercharges it preserves, and look for deformations built out of the matter fields that still preserve that supercharge. This is a powerful generalization of a recently developed approach based on deformations of 1/4 and 1/8 BPS bosonic loops, which itself was far more effective at discovering new operators than older methods relying on complicated ansatze. We discover many new moduli spaces of BPS hyperloops preserving varied numbers of supersymmetries and varied subsets of the symmetries of the 1/2 BPS operator. In particular, we find new bosonic operators preserving 2 or 3 supercharges as well as new families of loops that do not share supercharges with any bosonic loops, including subclasses of both 1/8 and 1/4 BPS loops that are conformal

Entropia de emaranhamento em Teorias de calibre

Dissertação (mestrado)—Universidade de Brasília, Instituto de Física, Programa de Pós-Graduação em Física, 2017.Neste trabalho, começa-se um estudo sistemático de emaranhamento em teorias de gauge. Adota-se a teoria de Yang-Mills no cilindro como modelo principal. Parte-se da Lagrangiana de Yang-Mills e obtém-se que, resolvendo o vínculo da lei de Gauss, a dinâmica do sistema pode ser reduzida àquela de uma partícula livre movendo-se ao longo da variedade do grupo de gauge. Isso significa que o sistema apresenta somente um grau de liberdade físico. Portanto, não é possível que haja emaranhamento. Acopla-se então a teoria de YangMills à uma partícula livre não-relativística. Uma primeira abordagem é feita considerando o caso abeliano. Obtém-se que o sistema apresenta não só emaranhamento, mas também degenerescência e anomalia axial. Com respeito à anomalia, cálculos analíticos são feitos e sua dependência com relação a outros parâmetros, como energia e degenerescência, é analisada. Com relação ao emaranhamento, cálculos numéricos de entropia de emaranhamento são feitos considerando o estado fundamental. Guiado pelo projeto acima delineado, essa dissertação tem também um objetivo pedagógico, no sentido de introduzir os conceitos de teoria de gauge, teoria de vínculo e teoria de grupos de Lie.In this work a systematic study of entanglement in gauge theories is started. The Yang-Mills theory on a cylinder is adopted as the main model. Starting from the Yang-Mills Lagrangian one obtains that, by solving the Gauss law constraint, the dynamics of the system can be reduced to that of a free particle moving along the gauge group manifold. This means that the system has only one physical degree of freedom. Therefore, the system does not present entanglement. The Yang-Mills theory is then coupled to a non-relativistic free particle. A first approach is made considering the abelian case. One obtains that the system presents not only entanglement, but also degeneracy and axial anomaly. With respect to anomaly, analytical calculations are carried out and its dependence on other parameters, such as energy and degeneracy, is analysed. Concerning entanglement, numerical calculations of entanglement entropy are made considering the ground-state. Guided by the project outlined above, this dissertation also has a pedagogical purpose, in the sense that it introduces concepts of gauge theory, constrained systems and Lie group theory

Classifying BPS bosonic Wilson loops in 3d N=4 Chern-Simons-matter theories

We study the possible BPS Wilson loops in three-dimensional N = 4 Chern-Simons-matter theory which involve only the gauge field and bilinears of the scalars. Previously known examples are the analogues of the Gaiotto-Yin loops preserving four supercharges and “latitude” loops preserving two. We carry out a careful classification and find, in addition, loops preserving three supercharges, further inequivalent classes of loops preserving two supercharges and loops preserving a single supercharge. For each of the classes of loops, we present a representative example and analyse their full orbit under the broken symmetries

Romanikielen pohjoismurteiden variaatio

Itämeren alueen romanikielen murteissa esiintyy vaihtelua. Tätä vaihtelua on pyritty historiallisesti liittämään murteiden geneettisellä suhteella tai murrepiirteiden maantieteellisellä diffuusiolla. Tässä artikkelissa esittelemme Itämeren alueen romanikielen murteiden vaihtelun analyysin olemassa olevien lähteiden perusteella ja argumentoimme maantieteellisen diffuusion puolesta

Subject Retention in Prehospital Stroke Research Using a Telephone-Based Physician-Investigator Driven Enrollment Method.

Background and purposeSubject retention into clinical trials is vital, and prehospital enrollment may be associated with higher rates of subject withdrawal than more traditional methods of enrollment. We describe rates of subject retention in a prehospital trial of acute stroke therapy.MethodsAll subjects were enrolled into the NIH Field Administration of Stroke Therapy-Magnesium (FAST-MAG) phase 3 clinical trial. Paramedics screened eligible subjects and contacted the physician-investigator using a dedicated in-ambulance cellular phone. Physician-investigators obtained explicit informed consent from the subject or on-scene legally authorized representative (LAR) who reviewed and signed a consent form. Exception from informed consent (EFIC) was utilized in later stages of the study.ResultsThere were 1,700 subjects enrolled; 1,017 provided consent (60%), 662 were enrolled via LAR (39%), and 21 were enrolled via EFIC (1%). Of the 1,700 patients, 1,413 (83%) completed the 90-day visit, 265 (16%) died prior to the 90-day visit, and 22 (1.3%) withdrew from the study before completion. There were no differences in rates of withdrawal by method of study enrolment, i.e., self-consent (n = 14), 1.4%; LAR (n = 8), 1.2%; EFIC (n = 0) 0%.ConclusionThere was a high rate of retention when subjects were enrolled into prehospital stroke research using a phone-based method to obtain explicit consent