Testing independence with additional information

Let X = (X^j : j = 1,…, n) be n row vectors of dimension p independently and identically distributed multinomial. For each j, X^j is partitioned as X^j = (X^j₁, X^j₂, X^j₃), where p_i is the dimension of X^j_i with p₁ = 1,p₁+p₂+p₃ = p. In addition, consider vectors Y^j_i, i = 1,2j = 1,…,n_i that are independent and distributed as X¹_i. We treat here the problem of testing independence between X¹₁ and X¹₃ knowing that X¹₁ and X¹₂ are uncorrected. A locally best invariant test is proposed for this problem.     

Equivariant estimators of the covariance matrix

Given a Wishart matrix S [S ∽ W_p(n, Σ)] and an independent multinomial vector X [X ∽ N_p (μ, Σ)], equivariant estimators of Σ are proposed. These estimators dominate the best multiple of S and the Stein-type truncated estimators.     

Intangible culture,cooperation and intercultural dialogue among university students

This paper focuses on intercultural competence and dialogue across cultural borders between university students from different Portuguese‐speaking countries. Various principles and strategies for intercultural education are summarised, and the project cultures@esec, based on such principles and strategies, is described. The project was focused on cultural heritage. The identities of African students and the intangible culture were also explored. Part of the project involved frequent contacts between domestic and international students, cooperation under equal‐status conditions, joint decision‐making and active learning. Results show that sharing knowledge and ideas, and working under pleasant learning conditions, can help reduce cultural barriers and prejudice and contributes to intercultural sensitivity and competence.

Este artigo centra‐se na competência intercultural dos estudantes universitários de países lusófonas e no diálogo entre culturas. São identificados, de forma sumária, alguns princípios e estratégias de educação intercultural e apresentado o projecto cultures@esec, que se baseia em tais princípios. O projecto esteve orientado para a valorização da herança cultual dos estudantes africanos e respectivas identidades e explorou a cultura intangível dos seus países. O trabalho desenvolvido implicou frequentes contactos entre os estudantes nacionais e estrangeiros, decisões conjuntas e cooperação em igualdade de estatuto. Os resultados mostram que partilhar conhecimentos e ideias e trabalhar em condições de aprendizagem agradáveis ajuda a quebrar barreiras culturais e a combater o preconceito e estimula a sensibilidade e a competência intercultural dos estudantes.     

The environmental value of buildings: a proposal for performance assessment with reference to the case of the tall office building

Buildings consume approximately 33% of the world's energy, equivalent to 21% of global CO₂ emissions (IEA 2009, World energy outlook 2009, http://www.iea.org/weo/electricity.asp). Given the current scenario of energy consumption in buildings, the objective of this paper is to present some of the key issues related to assessment of the environmental performance of buildings, supported by the proposal of strategic indicators (with reference to the tall office building), followed by a critical review of the value of environmental design. Fieldwork has shown that a group of European case-studies show signs of change beginning to emerge considering value ahead of first cost, challenging the conventional commercial model. Energy savings and environmental quality in the operation of buildings bring marketability benefits to tenants, whilst future-proofing investments are of benefit to investors. In addition, buildings need to go beyond governmental targets to be able to remain competitive, adding value to environmentally considerate design.     

Creating egalitarian families among the adult children of Turkish- and Polish-origin immigrants in Sweden

This article analyzes the factors shaping egalitarian family relationships among those with two Swedish‐born parents and those with at least one parent born in Poland or Turkey. We ask: (1) What factors affect sharing domestic tasks and do they also shape the division of child care responsibilities? (2) Do these effects differ, depending on the extent of exposure to Swedish life? We analyze data from a longitudinal survey conducted between 1999 and 2003. Holding egalitarian work–family attitudes affects actual sharing of housework, but much more for those growing up in more socially integrated than in less integrated families.     

Reflexive audiovisual methodology: The emergence of “minority practices” among pluriactive stock farmers

This paper proposes a new way for sociology, through both methodology and theory, to understand the reality of social groups and their “minority practices.” It is based on an experiment that concerns a very specific category of agriculturalists called “pluriactive” stock farmers. These stock farmers, who engage in raising livestock part-time alongside another full-time job, form a minority category within the agricultural profession.We address the question of how to analyze and represent the practices of this kind of “social” group or category through participatory filmmaking. Our research shows that beyond the collaborative production and screening of the film done in close cooperation with the stock farmers themselves, a second unexpected dynamic emerged around the sequences that were cut in the final editing round. These cut sequences reveal hesitations and disagreements among the breeders about their own practices in relation to their work and to animal welfare. These hesitations are not considered weaknesses, but rather as proof of the emergence of this group of stock farmers as “practitioners”. In the realm of intervention research, the participatory film-making process is attractive because it enables the farmers to raise new questions on their own, discuss them, and eventually resolve them, while also encouraging the researchers to identify the conditions that must be met in order to achieve this fragile linkage. This process and its outcomes force us to revisit the theoretical question of what constitutes a pragmatic definition of a “practice.”     

Utilization of administrative files in health research

Many authors have suggested that administrative health data files could provide the solution to the well-known research problem of obtaining data about volunteer subjects. However, many authors have failed to achieve satisfactory results because the use of these data files leads to special difficulties. Thus, unless the proper methodology is applied, use of health data files does not produce valuable results. In this paper we propose a conceptual framework which can be used to examine the suitability of health data files. More specifically, five aspects are discussed: (1) research team knowledge and skills; (2) identification and documentation of an accessible file; (3) file adequacy to answer the research question; (4) data quality; and (5) data processing. This conceptual framework should help health policy planners and researchers to better identify the problems they will meet and to find adequate solutions to these problems before embarking on the venture of using public data files.     

Differences Between Men and Women in Social Relations, Resource Deficits, and Depressive Symptomatology During Later Life in Four Nations

This article examines gender differences in social relations and resource deficits in France ( N = 553), Germany ( N = 516), Japan ( N = 491), and the United States ( N = 514). These data, from regionally representative samples, indicate few gender differences in quantity or quality of social relations, but that women are more likely than men to experience widowhood, illness, and financial strain. In all countries, more deficits and more negative social interactions are associated with higher levels of depressive symptoms. Interestingly, among women in France and Japan but not among men in any country, quality of social relations offsets the negative consequences of resource deficits. Findings suggest that quality of social relations may have important implications for helping people, particularly women, cope with resource deficits common in late life.