Search results for "Project"
showing 10 items of 3466 documents
User requirements and resource control for cooperative multimedia applications
1997
The spread of distributed multimedia applications is setting forth a new set of challenges in the management of host and network resources for guaranteeing Quality of Service (QoS). When the multimedia applications compete for resources as in the case of a cooperative multimedia environment, the management task becomes even more difficult. In this work, we first discuss QoS for multimedia applications. We then present the architectural and implementation details of a Cooperative Multimedia Environment (CME) made up of Cooperative Multimedia Applications (COMMA), one for each user. A COMMA presents a user with a single interface that allows him to invite other users to a cooperative session,…
Presenting the Past: A Framework for Facilitating the Externalization and Articulation of User Activities in Desktop Environment
2006
Work processes are conducted in various contexts and they involve different tasks, interruptions, activities and actions. In all of these, tacit knowledge plays a part. Some part of that tacit knowledge can be externalized and articulated by continuously monitoring the users activities. Because the desktop environment is an integral part of almost any office work context, we chart the demands the unstructured and discontinuous nature of work puts on the management of desktop working context. We discuss possibilities to augment the users awareness of his/her desktop working environment by providing a context-aware application that can act as a map-like resource for the users past activiti…
A mobile agent tool for resource discovery
2004
Publisher Summary This chapter discusses a mobile agent based tool for arranging communities whose members want to share computing resources. Such a tool enables community members to arrange their own parallel virtual machine, using resources available within the community. Mobile agents are used to search among available addresses inside the community, and are instructed to select the ones which correspond to the users' requirements. The agent is the key component of the system, because it takes care of the server availability test and of the decision on whether to include them into the virtual machine, according to the user's requirements. The database acts as an intermediary between the …
Search Interfaces and Learning about Controversial Topics
2019
Search engine results pages (SERPs) are a frequent gateway to Internet content. Prior research has extensively documented strong effects of SERPs (e.g. rank order or the spatial distribution of the results) on users' attention to and selection of particular Web pages [1,2]. In the context of Web search, a common user behavior is the 'top link' or 'Google trust' heuristic, that is, the inspection and selection of only the first few search results presented by the search engine, without evaluating all other search results available. This heuristic behavior allows users to find information in an efficient way, as search engines tend to provide relevant documents on top of the list, especially …
Short-Term Adaptation to Stress and Task-Demands: Covariation of Psychological and Physiological Manifestations
1986
Energetic aspects of adaptation to stress and task demands are reflected in autonomic and somatic nervous system (ANS/SNS) changes (see, eg Lyytinen, 1985). Related psychophysiological individual differences have been illustrated widely in the literature. The reported differences have varied from constitutional ones, like temperament (see, for recent references Nebylitsyn, 1972; Strelau, 1983), via dispositions/traits (Eysenck, 1983) and tonic states (Fahrenberg, Walschburger, Forster, Myrtek and Muller, 1983) to situation-dependent individual differences (eg research on type A; Contrada, Wright and Glass, 1984). The present paper argues that experimential and situational factors are import…
First Dark Matter Search Results from the XENON1T Experiment
2017
We report the first dark matter search results from XENON1T, a ∼2000-kg-target-mass dual-phase (liquid-gas) xenon time projection chamber in operation at the Laboratori Nazionali del Gran Sasso in Italy and the first ton-scale detector of this kind. The blinded search used 34.2 live days of data acquired between November 2016 and January 2017. Inside the (1042±12)-kg fiducial mass and in the [5,40] keVnr energy range of interest for weakly interacting massive particle (WIMP) dark matter searches, the electronic recoil background was (1.93±0.25)×10-4 events/(kg×day×keVee), the lowest ever achieved in such a dark matter detector. A profile likelihood analysis shows that the data are consisten…
Poner el trabajo al servicio de un proyecto de vida : estrategias contra la precariedad
2019
A partir de 20 historias de vida, este artículo se propone presentar las estrategias que algunos jóvenes italianos altamente cualificados han encontrado para eludir la doble amenaza de la precariedad laboral y de la invasión del trabajo en la vida. Centrando sus biografías en un proyecto de innovación social o ligado a la vertiente expresiva del trabajo, los jóvenes investigados se han enfrentado a un destino de explotación, incertidumbre, fragmentación e individualización del itinerario laboral y vital, común a una generación entera. Se ha utilizado la técnica de la entrevista en profundidad. La investigación ha permitido identificar en sus discursos las siguientes estrategias: 1) colocar …
Toward a virtual reconstruction of an antique three-dimensional marble puzzle
2017
International audience; Abstract | Introduction | Related Work | Acquisition Setup, Proposed Prototype: Calibration and Visibility | Preprocessing of Scanned Three-Dimensional Fragment Data | Processing of Scanned Three-Dimensional Surface Data: Matching | Conclusion and Future Works | Appendices | Acknowledgments | ReferencesAbstract. The reconstruction of broken objects is an important field of research for many applications, such as art restoration, surgery, forensics, and solving puzzles. In archaeology, the reconstruction of broken artifacts is a very time-consuming task due to the handling of fractured objects, which are generally fragile. However, it can now be supported by three-dim…
Extending CSG with projections: Towards formally certified geometric modeling
2015
We extend traditional Constructive Solid Geometry (CSG) trees to support the projection operator. Existing algorithms in the literature prove various topological properties of CSG sets. Our extension readily allows these algorithms to work on a greater variety of sets, in particular parametric sets, which are extensively used in CAD/CAM systems. Constructive Solid Geometry allows for algebraic representation which makes it easy for certification tools to apply. A geometric primitive may be defined in terms of a characteristic function, which can be seen as the zero-set of a corresponding system along with inequality constraints. To handle projections, we exploit the Disjunctive Normal Form,…
Approche coopérative pour l'acquisition et l'observation de formes tridimensionnelles
2009
Technologic progres can reduce the barrier between real image and virtual image so far it is really difficult to recognize them. When virtual reality is well done, augmented reality, from virtual world to real world, is still developped. We want to project a virtual texture onto a 3D real object. By using cameras and projector, we estimate its real pose in the virtual reference by projecting a coded pattern to find points of correspondence between cameras and projector onto the textureless object, where common detector of points of correspondence are useless. We combine the calibration of the system and these points to estimate the 3D position of the object, and then register with a fine mo…