This thesis is divided into two parts. In the first, we generalize results of Greenberg-Vatsal on the behavior of algebraic lambda-invariants of p-ordinary modular forms under congruence. In the second, we generalize a result of Emerton on maps between locally algebraic parabolically induced representations and unitary Banach space representations of GL₂ over a p-adic field. / text

This article provides an overview of recent developments relating to the application of thesauri in information organisation and retrieval on the World Wide Web. It describes some recent thesaurus projects undertaken to facilitate resource description and discovery and access to wide-ranging information resources on the Internet. Types of thesauri available on the Web, thesauri integrated in databases and information retrieval systems, and multiple-thesaurus systems for cross-database searching are also discussed. Collective efforts and events in addressing the standardisation and novel applications of thesauri are briefly reviewed.

Artificial Intelligence Lab, Department of MIS, University of Arizona / We report results of an investigation where thirty subjects were observed performing subject-based search in an online catalog system. The observations have revealed a range of misconceptions users have when performing subject-based search. We have developed a taxonomy that characterizes these misconceptions and a knowledge representation which explains these misconceptions. Directions for improving search performance are also suggested.

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This dissertation addresses the complex status of Teotihuacan, officially demarcated as a "zone of archaeological monuments," at the center of Mexico, which is a pluralistic nation-state. Located 40 kilometers from the modern capital, its largest pyramid, the Pyramid of the Sun, was built almost 2,000 years ago. Attracting hundreds of thousands of visitors every year, it is not only an important source of revenue but also a powerful symbol of Mexican national identity and immense historical pride. Leaving this site's prehistoric origins and significance for archaeologists to sort out, this thesis focuses on its position near the core of the political system and its role in articulating and commemorating national identity. By examining how the site has survived through history, how it has been represented, and how people interact with the site and at its premises, this thesis elaborates on the extent to which Teotihuacan should be conceived specifically as a nation-state formation place and on what other factors have shaped the place in its current form. The diversity that is revealed by this examination indicates, moreover, that the nation-state formation paradigm focuses too narrowly on ideological connotations, and fails to acknowledge some of the underlying aspects of materiality that form the site as well. The case-study examines the diverse ways in which meaning is constructed at Teotihuacan and proposes to study Teotihuacan as a 'total site.' Taking after French anthropologist Marcel Mauss's `total social phenomenon,' the `total site' concept describes a place that features diversely in the collective imagination and must be understood as such, and is used to integrate a variety of perspectives that relate to and give meaning to Teotihuacan as a diverse place. Serving as a heuristic device to characterize the complexity of Teotihuacan, the term captures both material and ideological aspects. This discussion, finally, exposes Mexico as a country with a strong nation-state formation tradition, but suggests that there is more to Mexico than that nation-state formation agenda.

In its annual report, "How Are We Doing?", British Columbia's Ministry of Education assesses Aboriginal students' participation and graduation rates, both of which have been consistently below those of non-Aboriginal students. In addressing the question, "How are we doing?", this thesis examines the visual images and representations of Aboriginal peoples in British Columbia's secondary Social Studies textbooks as well as the Aboriginal programs offered in the Surrey School District. The implications affect both Aboriginal and non-Aboriginal students as the study hopes to encourage and improve cross-cultural responsiveness between and among them and to promote public discourse in the education for and of Aboriginal peoples. Negative portrayals and representations of Aboriginal peoples were common in textbooks of the past as documented by various studies. In reviewing the Surrey School District's currently recommended Social Studies textbooks, four main concerns continue to exist and persist: Aboriginal peoples continue to be marginalized, essentialized, seen as a problem, and decontextualized. However, one of the ministry's approved courses, BC First Nations Studies 12, attempts to address these inequities. Its recommended textbook is based on Aboriginal knowledge and epistemology, empowering and giving voice to Aboriginal peoples. Through the interviews of eight educators who assist Aboriginal students in the Surrey School District, this study offers some of their insights to improve student "success". Aboriginal students need to accept and embrace their identity, not only to build their self-esteem but also to honour their own cultures. Educators need to redefine "success" beyond academic achievement to include Aboriginal knowledge and epistemology within their teaching and evaluating practices and become more cognizant of and sensitive to the challenges and triumphs of their students, both Aboriginal and non-Aboriginal. Universities need to re-address the training of future educators to include Aboriginal issues in order for them to gain greater historical understanding and, in turn, empathy and compassion. These practical initiatives reflect the progress and movement in addressing the challenges and hopes of Aboriginal peoples in their journey toward real self-determination and decolonization.

This thesis is a study in Representation Theory and Geometry. These two branches of mathematics have a fruitful interaction, with many applications to Physics and other sciences. Central objects of interest are homogeneous spaces and their symmetry groups. The geometric and analytic properties of homogeneous spaces relate to the structure and representation theory of the corresponding groups. The focus of this work is on certain representation theoretic phenomena related to equivariant embeddings of homogeneous spaces. The Borel-Weil-Bott theorem, a milestone in Representation Theory and Geometry, provides realizations for every irreducible module of a semisimple complex Lie group as various cohomology spaces of homogeneous vector bundles on flag manifolds of the group. The purpose of this dissertation is to initiate a study of the behaviour of the Borel-Weil-Bott construction under pullbacks along equivariant embeddings of flag manifolds. These pullbacks provide certain geometric branching rules for representations. This is where the notion of a cohomological component arises from. The central result of the dissertation is a criterion for nonvanishing of the pullback. The framework used for the formulation and proof of the result is Kostant's theory of Lie algebra cohomology. After the general criterion is established, various specializations and applications are presented: special classes of embeddings are considered, for which the criterion takes simpler forms; relations are established between pullbacks along embeddings of complete and partial flag manifolds; properties of the set of cohomological components are obtained; various examples are considered, the most interesting of which is related to the theory of invariants of semisimple Lie algebras. / Thesis (Ph.D, Mathematics & Statistics) -- Queen's University, 2011-08-23 11:55:57.845

I denna studie undersöks hur romer representeras i media. Detta görs utifrån två aktuella nyhetshändelser under 2013 där jag söker svar på vilka som får framträda i artiklarna, vilka nyckelord som används i texterna samt hur romer representeras genom en bildanalys.  En jämförelse görs också historiskt med tidigare skildringar av romer för att se om representationen av romer är liknande sedan tidigare. Jag blev intresserad att göra denna studie om romer och media då romer inte alltför längesedan blivit en erkänd minoritetsgrupp men som historiskt varit en väldigt utsatt grupp i Sverige och länder runt om i Europa.  Resultatet av studien visar att romer idag beskrivs med liknande negativa konnotationer som de gjort historiskt men att detta inte uttrycks i media på samma sätt idag. Skillnaden mellan hur romer representeras idag och under tidigt 1900-tal är att det förut skrevs öppet negativt om romer – idag används inte språkbruket för att identifiera romer utan det uttrycks mellan raderna.

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