Multi-scale cortical keypoint representation for attention and object detection

Keypoints (junctions) provide important information for focus-of-attention (FoA) and object categorization/recognition. In this paper we analyze the multi-scale keypoint representation, obtained by applying a linear and quasi-continuous scaling to an optimized model of cortical end-stopped cells, in order to study its importance and possibilities for developing a visual, cortical architecture.We show that keypoints, especially those which are stable over larger scale intervals, can provide a hierarchically structured saliency map for FoA and object recognition. In addition, the application of non-classical receptive field inhibition to keypoint detection allows to distinguish contour keypoints from texture (surface) keypoints.

Choosing Union Representation: The Role of Attitudes and Emotions

In the United States, most unions are recognized by a majority vote of employees through union representation elections administered by the government. Most empirical studies of individual voting behavior during union representation elections use a rational choice model. Recently, however, some have posited that voting is often influenced by emotions. We evaluate competing hypotheses about the determinants of union voting behavior by using data collected from a 2010 representation election at Delta Air Lines, a US-based company. In addition to the older rational choice framework, multiple regression results provide support for an emotional choice model. Positive feelings toward the employer are statistically significantly related to voting ‘no’ in a representation election, while positive feelings toward the union are related to a ‘yes’ vote. Effect sizes for the emotion variables were generally larger than those for the rational choice variables, suggesting that emotions may play a key role in representation election outcomes.

Knowledge representation for data integration and exploration in translational medicine

Tese de doutoramento, Informática (Bioinformática), Universidade de Lisboa, Faculdade de Ciências, 2014

The Long Range Transport of Birch (Betula) Pollen from Poland and Germany Causes Significant Pre-season Concentrations in Denmark

Background Birch pollen is highly allergic and has the potential for episodically long range transport. Such episodes will in general occur out of the main pollen season. During that time allergy patients are unprotected and high pollen concentrations will therefore have a full allergenic impact. Objective To show that Denmark obtains significant quantities of birch pollen from Poland or Germany before the local trees start to flower. Methods Simultaneous observations of pollen concentrations and phenology in the potential source area in Poland as well as in Denmark were performed in 2006. The Danish pollen records from 2000-2006 were analysed for possible long range transport episodes and analysed with trajectories in combination with a birch tree source map. Results In 2006 high pollen concentrations were observed in Denmark with bi-hourly concentrations above 500 grains/ m3 before the local trees began to flower. Poland was identified as a source region. The analysis of the historical pollen record from Copenhagen shows significant pre-seasonal pollen episodes almost every year from 2000-2006. In all episodes trajectory analysis identified Germany or Poland as source regions. Conclusion Denmark obtains significant pre-seasonal quantities of birch pollen from either Poland or Germany almost every year. Forecasting of birch pollen quantities relevant to allergy patients must therefore take into account long-range transport. This cannot be based on measured concentrations in Denmark. The most effective way to improve the current Danish pollen forecasts is to extend the current forecasts with atmospheric transport models that take into account pollen emission and transport from countries such as Germany and Poland. Unless long range transport is taken into account pre-seasonal pollen episodes will have a full allergic impact, as the allergy patients in general will be unprotected during that time.

Transformation or bureaucratisation?: the changing role of community representation in local strategic partnerships in England

The debate about the need to build social capital and to engage local communities in public policy has become a central issue in many advanced liberal societies and developing countries. In many countries new forms of governance have emerged out of a growing realisation that representative democracy by itself is no longer sufficient. One of the most significant public policy trends in the UK has been the involvement of community organisations and their members in the delivery of national policy, mediated through local systems of governance and management. One such policy area is urban regeneration. Central government now requires local authorities in England to set up Local Strategic Partnerships (LSPs) to bring together stakeholders who can prepare Community Strategies and deliver social and economic programmes which target areas of deprivation. This paper reviews the key institutional processes which must be addressed, such as representation, accountability and transformation.

Colonial architectures, urban planning and the representation of Portuguese imperial history

This article proposes a critical analysis of recent interpretations made to the history of architecture and urban planning in the Portuguese colonial context in the twentieth century, particularly in the former African territories. More generally, it intends to explore how the internal history produced by specific fields of activity, such as architecture or urbanism, can reinforce the logic of a national and nationalized history. This effect is due partly to the fact that the legitimacy of these fields is largely dependent on the national identification in the context of activities that are internationalized. I will argue that the specific field of activity, while creating this internal discourse, can directly or indirectly produce representations of the nation, its history and its people on a larger scale, penetrating popular culture and influencing a shared common sense. In the case in question, the internal discourse on architectural and urbanistic works, on authors and styles, eventually reinforces an idealized and idyllic image of Portuguese colonialism.

Liberalization of Labor Relations in Germany and the United States: A firm-centered comparison of cross-national labor organizing at Amazon and Volkswagen

Thesis (Master's)--University of Washington, 2015

(Un)settling the Irish emigrant identity: representation and construction of an Irish emigrant/exile identity in the travel narratives of Kathleen Nevin and William Bulfin

Through an examination of the travel works of William Bulfin, Tales of the Pampas (1900) and Kathleen Nevin's You'll Never Go Back this paper considers the representation of the Irish in Argentina and the contribution of these narratives in the construction of identity and the reconstruction of the emigrant identity into an exilic one. Escaping one colonial framework (Britain/Ireland), travelling to and writing from within another postcolonial construct (Argentina and the Spanish Empire), this paper analyses how Bulfin and Nevin use language as a tool to construct, and even invent, an Irish identity. This identity is inextricably linked to home and the desire to return there. Despite this desire, Argentina becomes internalised to some extent, which in Bulfin can be seen in the mix of the Spanish, English and Irish languages in his stories, highlighting that the Irish were doing with language what they had already done with their lives; trying to adapt it to their new situation. In Nevin, the contrast between us and them (Irish and 'Native') demonstrates her attempts to shape an exilic rather than emigrant mentality. Through these texts I analyse how Argentina never quite becomes a new home, but a place where Irish identity is played out and acquires form.

Gender and Assimilation: The Roles and Representation of Women in Modern Jewish History, pt. 1

Explores the relation between gender and the encounter of Jews with various conditions of Modernity. She makes clear that the study of the process of Jewish assimilation in contemporary times must include women and gender in its framework.

Gender and Assimilation: The Roles and Representation of Women in Modern Jewish History, pt. 3

Explores the relation between gender and the encounter of Jews with various conditions of Modernity. She makes clear that the study of the process of Jewish assimilation in contemporary times must include women and gender in its framework.

Gender and Assimilation: The Roles and Representation of Women in Modern Jewish History, pt. 2

Explores the relation between gender and the encounter of Jews with various conditions of Modernity. She makes clear that the study of the process of Jewish assimilation in contemporary times must include women and gender in its framework.

Do human resource practices enhance organizational commitment in SMEs with low employee satisfaction?

This paper considers a large matched employee–employer data set to estimate a model of organizational commitment. In particular, it focuses on the role of firm size and management formality to explain organizational commitment in British small and medium-sized enterprises (SMEs) with high and low levels of employee satisfaction. It is shown that size ‘in itself’ can explain differences in organizational commitment, and that organizational commitment tends to be higher in organizations with high employee satisfaction compared with organizations of similar size with low employee satisfaction. Crucially, the results suggest that formal human resource (HR) practices can be used as important tools to increase commitment and thus, potentially, effort and performance within underperforming SMEs with low employee satisfaction. However, formal HR practices commonly used by large firms may be unnecessary in SMEs which benefit from high employee satisfaction and positive employment relations within a context of informality.