Robust handling of out-of-vocabulary words in deep language processing

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

The Art of Nursing in a Postmodern Context

Notions of the "postmodern" pervade various fields of study, but have rarely been applied to the practice and theory of nursing. This paper uses some conceptions of the "postmodern" to remedy this. Though there are many contested usages of the term, here "postmodern" will be used broadly in a periodical sense to trace changes in society and culture from the "modernism" of the 18th and 19th centuries to current concerns about "postmodernism". How these changes have been reflected in nursing practice and nursing theory will be explored. The changing use of the term "modern" to describe up-to-date practice will be addressed in the course of this. It is suggested that contextualizing nursing as a social/cultural activity in this way offers perspectives which will help us untangle the conflicting agendas and issues which form the fabric of the social world in which current nursing takes place, enabling us to act more effectively in promoting our own professional agendas.

Professionalism and skills enhancement in the built environment: the role of higher education in a changing policy context in England

Since the election of the Labour Government in 1997 there have been a series of policy initiatives emphasising the importance of co-ordinated and integrated approaches to the delivery of urban regeneration and in particular Sustainable Communities. This changing policy context has given rise to a shortage of practitioners with both the technical skills to deliver specific programmes, and more especially the generic skills to work in multi-disciplinary teams in conjunction with partnership-based management boards. This paper discusses the origins of the debate about skills shortages and deficiencies and reviews the main government reports which have advocated a new approach to the provision of skills for community regeneration. It focuses particularly on the work of the Planning Network which was funded by the Centre for Education in the Built Environment (CEBE) to examine the contribution of higher education to the wider skills debate. It concludes by arguing that higher education has an important part to play in the provision of a more appropriate skills set for professional practice within a broader and more inclusive strategy involving all key stakeholders. However, employers also have a major responsibility in ensuring that key skills are maintained and enhanced within their own organisations.

Late twentieth century congressional leaders as shapers of and hostages to political context: Gingrich, Hastert, and Lott

Most contemporary explanations of congressional leadership postulate a version of contextual theory that typically places greatest emphasis on the strength of party and downplays the personal skills of individual leaders. By analyzing the leadership of just three recent individuals—Gingrich, Hastert, and Lott—this essay demonstrates the extent to which these leaders' different styles, skills, and characteristics interacted with changing political contexts and strategic environments to impact political and policy outcomes. Context matters, but so does leadership skill. Most graphically, Gingrich—a rare transforming leader in Burns' typology—demonstrates the importance of the right person and the right conditions being in place at the same time and the ability of an individual imaginative leader to intervene exogenously to have a significant effect on policy outcomes. Yet the essay also demonstrates that even where leaders adopt more conventional transactional styles, as Hastert and Lott did, the skill and success with which they juggle political pressures emanating from different, often conflicting, contexts—skills in context—also matters.

Prospects and Problems for Religious Education in England, 1967-1970: Curriculum Reform in Political Context

This article provides an historical case study of an abortive attempt to revise policy and legislation relating to Religious Education (RE) in English schools in the late 1960s and early 1970s. Drawing upon published sources, including parliamentary debates, as well as previously unutilised national archival sources from the Department of Education and Science, it comments upon events which have hitherto been omitted from the historiography of RE, but which help to contextualise significant changes in RE theory and practice at that time. Moreover, it demonstrates that the current parlous state of RE in schools is in part the result of latent and longstanding issues and problems, rather than a consequence of present-day government policy alone. Therefore, in reviewing and developing RE policies and practices, all stakeholders are urged to look more closely at both changes and continuities in the subject’s past and the contexts in which they occurred.

Understanding community empowerment in urban regeneration and planning in England: putting policy and practice in context

Community involvement in the fields of town planning and urban regeneration includes a wide range of opportunities for residents and service users to engage with networks, partnerships and centres of power. Both the terminology and degree of the transfer of power to citizens varies in different policy areas and contexts but five core objectives can be identified. This article approaches the subject of community empowerment by exploring the theoretical literature; reviewing recent policy pronouncements relating to community involvement in England and by discussing a recent case study of an Urban II project in London. The conclusions suggest that community empowerment is always likely to be partial and contingent on local circumstances and the wider context.

PREGNANCY-RELATED CHURN AND ACCESS TO CARE IN THE CONTEXT OF NARROW NETWORKS IN WASHINGTON STATE

Thesis (Master's)--University of Washington, 2016-03

Regeneration: the inner city in context

This chapter (12) reviews key publications by Sir Peter Hall in the period 1967-79. In this period he was particularly interested in the 'inner city' and how problems of deprivation, unemployment, poor housing, and increasingly immigration might best be addressed by public policy. Each chapter in the book reviews Sir Peter's publications over a long and distinguished career in research and policy advice to government in honour of his 80th birthday in 2013.

A case study in identifying acceptable bitrates for human face recognition tasks

Face recognition from images or video footage requires a certain level of recorded image quality. This paper derives acceptable bitrates (relating to levels of compression and consequently quality) of footage with human faces, using an industry implementation of the standard H.264/MPEG-4 AVC and the Closed-Circuit Television (CCTV) recording systems on London buses. The London buses application is utilized as a case study for setting up a methodology and implementing suitable data analysis for face recognition from recorded footage, which has been degraded by compression. The majority of CCTV recorders on buses use a proprietary format based on the H.264/MPEG-4 AVC video coding standard, exploiting both spatial and temporal redundancy. Low bitrates are favored in the CCTV industry for saving storage and transmission bandwidth, but they compromise the image usefulness of the recorded imagery. In this context, usefulness is determined by the presence of enough facial information remaining in the compressed image to allow a specialist to recognize a person. The investigation includes four steps: (1) Development of a video dataset representative of typical CCTV bus scenarios. (2) Selection and grouping of video scenes based on local (facial) and global (entire scene) content properties. (3) Psychophysical investigations to identify the key scenes, which are most affected by compression, using an industry implementation of H.264/MPEG-4 AVC. (4) Testing of CCTV recording systems on buses with the key scenes and further psychophysical investigations. The results showed a dependency upon scene content properties. Very dark scenes and scenes with high levels of spatial–temporal busyness were the most challenging to compress, requiring higher bitrates to maintain useful information.

Georg Lukács as a Communications Scholar: Cultural and Digital Labour in the Context of Lukács’ Ontology of Social Being

The task of this work is to apply thoughts from Georg Lukács’ final book, the Ontology of Social Being, for the theoretical analysis of cultural and digital labour. It discusses Lukács’ concepts of work and communication and relates them to the analysis of cultural and digital work. It also analyses his conception of the relation of labour and ideology and points out how we can make use of it for critically understanding social media ideologies. Lukács opposes the dualist separation of the realms of work and ideas. He introduces in this context the notion of teleological positing that allows us to better understand cultural and digital labour as well as associated ideologies, such as the engaging/connecting/sharing-ideology, today. The analysis shows that Lukács’ Ontology is in the age of Facebook, YouTube, and Twitter still a very relevant book, although it has thus far not received the attention that it deserves. This article also introduces the Ontology’s main ideas on work and culture, which is important because large parts of the book have not been translated from the German original into English. Lukács’ notion of teleological positing is crucial for understanding the common features of the economy and culture.

Developmental switch in the kinase dependency of long-term potentiation depends on expression of GluA4 subunit-containing AMPA receptors

The AMPA-receptor subunit GluA4 is expressed transiently in CA1 pyramidal neurons at the time synaptic connectivity is forming, but its physiological significance is unknown. Here we show that GluA4 expression is sufficient to alter the signaling requirements of long-term potentiation (LTP) and can fully explain the switch in the LTP kinase dependency from PKA to Ca2(+)/calmodulin-dependent protein kinase II during synapse maturation. At immature synapses, activation of PKA leads to a robust potentiation of AMPA-receptor function via the mobilization of GluA4. Analysis of GluA4-deficient mice indicates that this mechanism is critical for neonatal PKA-dependent LTP. Furthermore, lentiviral expression of GluA4 in CA1 neurons conferred a PKA-dependent synaptic potentiation and LTP regardless of the developmental stage. Thus, GluA4 defines the signaling requirements for LTP and silent synapse activation during a critical period of synapse development.

Context-aware Approach for Determining the Threshold Price in Name-Your-Own-Price Channels

Key feature of a context-aware application is the ability to adapt based on the change of context. Two approaches that are widely used in this regard are the context-action pair mapping where developers match an action to execute for a particular context change and the adaptive learning where a context-aware application refines its action over time based on the preceding action’s outcome. Both these approaches have limitation which makes them unsuitable in situations where a context-aware application has to deal with unknown context changes. In this paper we propose a framework where adaptation is carried out via concurrent multi-action evaluation of a dynamically created action space. This dynamic creation of the action space eliminates the need for relying on the developers to create context-action pairs and the concurrent multi-action evaluation reduces the adaptation time as opposed to the iterative approach used by adaptive learning techniques. Using our reference implementation of the framework we show how it could be used to dynamically determine the threshold price in an e-commerce system which uses the name-your-own-price (NYOP) strategy.