The hippocampus and cerebellum in adaptively timed learning, recognition, and movement

The concepts of declarative memory and procedural memory have been used to distinguish two basic types of learning. A neural network model suggests how such memory processes work together as recognition learning, reinforcement learning, and sensory-motor learning take place during adaptive behaviors. To coordinate these processes, the hippocampal formation and cerebellum each contain circuits that learn to adaptively time their outputs. Within the model, hippocampal timing helps to maintain attention on motivationally salient goal objects during variable task-related delays, and cerebellar timing controls the release of conditioned responses. This property is part of the model's description of how cognitive-emotional interactions focus attention on motivationally valued cues, and how this process breaks down due to hippocampal ablation. The model suggests that the hippocampal mechanisms that help to rapidly draw attention to salient cues could prematurely release motor commands were not the release of these commands adaptively timed by the cerebellum. The model hippocampal system modulates cortical recognition learning without actually encoding the representational information that the cortex encodes. These properties avoid the difficulties faced by several models that propose a direct hippocampal role in recognition learning. Learning within the model hippocampal system controls adaptive timing and spatial orientation. Model properties hereby clarify how hippocampal ablations cause amnesic symptoms and difficulties with tasks which combine task delays, novelty detection, and attention towards goal objects amid distractions. When these model recognition, reinforcement, sensory-motor, and timing processes work together, they suggest how the brain can accomplish conditioning of multiple sensory events to delayed rewards, as during serial compound conditioning.Air Force Office of Scientific Research (F49620-92-J-0225, F49620-86-C-0037, 90-0128); Advanced Research Projects Agency (ONR N00014-92-J-4015); Office of Naval Research (N00014-91-J-4100, N00014-92-J-1309, N00014-92-J-1904); National Institute of Mental Health (MH-42900

The Architecture of Communal Living: Lessons from Arcosanti in Arizona

Paolo Soleri's arcology model (architecture + ecology addresses issues of sustainability by advocating living in a balanced relationship between urban morphology and performance within dense, integrated and compact structures. Within these structures material recycling, waste reduction and the use of renewable energy sources are adopted as part of a sustainable strategy aimed at reducing the flow of resources and energy through the urban system. Today, as governments, eager to deliver major environmental improvements, press on with as yet untried and largely untested 'centrist' policies of urban living, there is a need to research relevant models of the 'compact city' approach. Issues involved with the intensification in the use of space, higher residential densities, centralisation, compactness, the integration of land uses and aspects of self-containment need to be examined. Over the last ten years, as the criteria of sustainability have become more widely accepted and understood, the relevance of the Soleri's urban model has become clearer. Arcosanti, begun in 1970, offers a laboratory for testing the validity of Soleri's ideas. This paper examines arcology and Arcosanti within the context of sustainability. Since the energy crisis of the mid 1970s, efforts at Arcosanti have been directed toward the definition and testing of various architectural effects on a community-wide scale that could offer a response to many of today's environmental problems. But progress is painstakingly slow. Lacking the level of funding and resources that would enable it to be convincing, Arcosanti now represents not so much a specific prototypal solution, but an activist-engaged strategy that advocates the possibility of building our dreams and visions. In a world plagued by so many problems and so few alternatives, it nevertheless continues to offer a beacon of hope on the threshold of a new millennium

Changing the Architectural Profession - Evidence-Based Design, the New Role of the User and a Process-Based Approach

The construction industry is characterised by ever-changing projects that constantly involve new clients, teams and people. This results in the need to build up new sets of relationships each time. Within these relationships the perspective of the users of space is mostly neglected, partly due to the ephemeral nature of the industry, but partly also because of the character and culture of the architectural profession. In contrast, this paper argues that the architectural profession needs to make a double turn: firstly, the needs and wishes of the user need to be in the centre of the architectural business. Secondly, the whole industry may change from a project-centred one into a process-based one where the process of finding out what the client needs, of engaging the users, proposing a design solution, managing the project, and evaluating its use and appropriation in the end in order to learn from it, is nearly as important as aesthetics, form and function. This involves a lot more intelligence and research about cultures and characteristics of the client, may it be a private person, a city council or a corporation, hence architectural and organisational research may play a new role in the architectural professional culture

Organizing information on the next generation web - Design and implementation of a new bookmark structure

The next-generation Web will increase the need for a highly organized and ever evolving method to store references to Web objects. These requirements could be realized by the development of a new bookmark structure. This paper endeavors to identify the key requirements of such a bookmark, specifically in relation to Web documents, and sets out a suggested design through which these needs may be accomplished. A prototype developed offers such features as the sharing of bookmarks between users and groups of users. Bookmarks for Web documents in this prototype allow more specific information to be stored such as: URL, the document type, the document title, keywords, a summary, user annotations, date added, date last visited and date last modified. Individuals may access the service from anywhere on the Internet, as long as they have a Java-enabled Web browser

Problems and Opportunities of Interdisciplinary Work involving Users in Speculative Research for Innovation of Novel ICT Applications

In this article we focus upon some challenges of multidisciplinary teams working interdisciplinary in research for innovation of novel ICT applications. We start by defining some general challenges of especially social scientists when working interdisciplinary. The formulated challenges are grounded in our personal experiences. In the next part of the article we focus upon research methods that are used when involving users in the research of novel ICT applications. We shortly describe the different methods and the value they have for social scientists, designers, marketing people and engineers. In the latest part of the article we argument why, from our opinion, using this speculative research methods involving users can help facilitating interdisciplinary work

Player agency in interactive narrative: audience, actor & author

The question motivating this review paper is, how can computer-based interactive narrative be used as a constructivist learn- ing activity? The paper proposes that player agency can be used to link interactive narrative to learner agency in constructivist theory, and to classify approaches to interactive narrative. The traditional question driving research in interactive narrative is, ‘how can an in- teractive narrative deal with a high degree of player agency, while maintaining a coherent and well-formed narrative?’ This question derives from an Aristotelian approach to interactive narrative that, as the question shows, is inherently antagonistic to player agency. Within this approach, player agency must be restricted and manip- ulated to maintain the narrative. Two alternative approaches based on Brecht’s Epic Theatre and Boal’s Theatre of the Oppressed are reviewed. If a Boalian approach to interactive narrative is taken the conflict between narrative and player agency dissolves. The question that emerges from this approach is quite different from the traditional question above, and presents a more useful approach to applying in- teractive narrative as a constructivist learning activity

Photo-FETs: phototransistors enabled by 2D and 0D nanomaterials

The large diversity of applications in our daily lives that rely on photodetection technology requires photodetectors with distinct properties. The choice of an adequate photodetecting system depends on its application, where aspects such as spectral selectivity, speed, and sensitivity play a critical role. High-sensitivity photodetection covering a large spectral range from the UV to IR is dominated by photodiodes. To overcome existing limitations in sensitivity and cost of state-of-the-art systems, new device architectures and material systems are needed with low-cost fabrication and high performance. Low-dimensional nanomaterials (0D, 1D, 2D) are promising candidates with many unique electrical and optical properties and additional functionalities such as flexibility and transparency. In this Perspective, the physical mechanism of photo-FETs (field-effect transistors) is described and recent advances in the field of low-dimensional photo-FETs and hybrids thereof are discussed. Several requirements for the channel material are addressed in view of the photon absorption and carrier transport process, and a fundamental trade-off between them is pointed out for single-material-based devices. We further clarify how hybrid devices, consisting of an ultrathin channel sensitized with strongly absorbing semiconductors, can circumvent these limitations and lead to a new generation of highly sensitive photodetectors. Recent advances in the development of sensitized low-dimensional photo-FETs are discussed, and several promising future directions for their application in high-sensitivity photodetection are proposed.Peer ReviewedPostprint (author's final draft

ROTOЯ Review

The ROTOЯ partnership between Huddersfield Art Gallery and the University of Huddersfield was established in 2011. ROTOЯ I and II was a programme of eight exhibitions and accompanying events that commenced in 2012 and was completed in 2013. ROTOЯ continues into 2014 and the programme for 2015 and 2016 is already firmly underway. In brief, the aim of ROTOЯ is to improve the cultural vitality of Kirklees, expand audiences, and provide new ways for people to engage with and understand academic research in contemporary art and design. Why ROTOЯ , Why Now? As Vice Chancellors position their institutions’ identities and future trajectories in context to national and international league tables, Professor John Goddard1 proposes the notion of the ‘civic’ university as a ‘place embedded’ institution; one that is committed to ‘place making’ and which recognises its responsibility to engaging with the public. The civic university has deep institutional connections to different social, cultural and economic spheres within its locality and beyond. A fundamental question for both the university sector and cultural organisations alike, including local authority, is how the many different articulations of public engagement and cultural leadership which exist can be brought together to form one coherent, common language. It is critical that we reach out and engage the community so we can participate in local issues, impact upon society, help to forge well-being and maintain a robust cultural economy. Within the lexicon of public centered objectives sits the Arts Council England’s strategic goals, and those of the Arts and Humanities Research Council – in particular its current Cultural Value initiative. What these developments reveal is that art and design education and professional practice, its projected oeuvre as well as its relationship to cultural life and public funding, is now challenged with having to comprehensively audit its usefulness in financially austere times. It was in the wake of these concerns coming to light, and of the 2010 Government Spending Review that ROTOЯ was conceived. These issues and the discussions surrounding them are not completely new. Research into the social benefits of the arts, for both the individual and the community, was championed by the Community Arts Movement in the 1960s. During the 1980s and ‘90s, John Myerscough and Janet Wolff, amongst others, provided significant debate on the role and value of the arts in the public domain. What these discussions demonstrated was a growing concern that the cultural sector could not, and should not, be understood in terms of economic benefit alone. Thankfully, the value of the relationships between art, education, culture and society is now recognised as being far more complex than the reductive quantification of their market and GDP benefits. Writing in ‘Art School (Propositions for the 21st Century)’, Ernesto Pujol proposes:‘…it is absolutely crucial that art schools consider their institutional role in support of democracy. The history of creative expression is linked to the history of freedom. There is a link between the state of artistic expression and the state of democracy.’ When we were approached by Huddersfield Art Gallery to work collaboratively on an exhibition programme that could showcase academic staff research, one of our first concerns was to ask the question, how can we really contribute to cultural leadership within the town?’ The many soundbite examples of public engagement that we might underline within our annual reports or website news are one thing, but what really makes a difference to a town’s cultural identity, and what affects people in their daily lives? With these questions in mind we sought a distinctive programme within the muncipal gallery space, that would introduce academic research in art, design and architecture beyond the university in innovative ways