32 results on '"theory and models"'
Search Results
2. Conception et production d'un guide patient pour accompagner la reprise du travail après un cancer du sein: une application de l'Intervention Mapping.
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Broc, Guillaume, Carretier, Julien, Rouat, Sabrina, Guittard, Laure, Péron, Julien, Fervers, Béatrice, Letrilliart, Laurent, Sarnin, Philippe, Fassier, Jean-Baptiste, and Lamort-Bouché, Marion
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PATIENT education ,FOCUS groups ,BREAST tumors ,EMPIRICAL research ,QUESTIONNAIRES ,BEHAVIOR ,CANCER patients ,HEALTH planning ,RESEARCH ,MATHEMATICAL models ,THEORY ,PUBLIC health ,HEALTH promotion ,EMPLOYMENT reentry ,INDUSTRIAL hygiene - Abstract
Copyright of Psycho-Oncologie is the property of Tech Science Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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3. Metaphors of communication professionals in higher education : between the trivial and significant
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Sataøen, Hogne L., Lövgren, Daniel, Neby, Simon, Sataøen, Hogne L., Lövgren, Daniel, and Neby, Simon
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This study explores the evolving, however also “messy”, role of communication professionals in higher education institutions (HEIs), who are involved in organizational science communication. Despite substantial growth and professionalization within HEIs’ communication departments, limited research delves into these professionals’ own perspectives and their self-understanding. Our investigation employs a metaphors-in-use perspective, through 26 interviews in ten Scandinavian HEIs. The paper contributes to the research on organizational science communication by unraveling the metaphors used by communication professionals: the salesman, the marketplace-facilitator, the police, the missionary, the storyteller, and the overhead-cost, gaining an understanding of how communication professionals perceive their own role., PROMUNI (financed by the Swedish Research Council under grant number 2020-03421)
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- 2024
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4. The Antecedents of Intelligent Personal Assistants Adoption
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Orehovački, Tihomir, Etinger, Darko, Babić, Snježana, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, and Nunes, Isabel L., editor
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- 2019
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5. Visual Model Fit Estimation in Scatterplots: Influence of Amount and Decentering of Noise.
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Reimann, Daniel, Blech, Christine, Ram, Nilam, and Gaschler, Robert
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SCATTER diagrams ,NOISE ,DATA visualization - Abstract
Scatterplots with a model enable visual estimation of model-data fit. In Experiment 1 (N = 62) we quantified the influence of noise-level on subjective misfit and found a negatively accelerated relationship. Experiment 2 showed that decentering of noise only mildly reduced fit ratings. The results have consequences for model-evaluation. [ABSTRACT FROM AUTHOR]
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- 2021
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6. Analytical Challenges for Neoinstitutional Theories of Institutional Change in Comparative Political Science
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Flávio Rezende
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Comparative political science ,institutional change theory ,new institutionalism ,theory and models ,research design ,Political science (General) ,JA1-92 - Abstract
This article analyses the core critiques on institutional change theories within the neoinstitutional research agenda in comparative political science. If offers an explanatory typology using analytical challenges for the development of theories with new institutional approaches. This typology provides key critical issues that should be seriously considered by political scientists when analyzing change. The framework suggests that the analytical challenges be posed in five interwoven dimensions: a) inclusion of institutional variables; b) agency and cognition; c) contextual sensitivity; d) increasing precision in the concept of institution (and institutional change); and, e) recursive interaction between agents and institutions in the process of institutional change. Based on these challenges, the article conducts a comparative analysis of the theories of change suggested by North and Aoki to understand how they deal with such issues.
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- 2009
7. Relations between pressurized triaxial cavities and moment tensor distributions
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Claudio Ferrari, Maurizio Bonafede, and Elisa Trasatti
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Theory and Models ,Algorithms and implementation ,Crustal deformations ,Gravity variations ,General or miscellaneous ,Meteorology. Climatology ,QC851-999 ,Geophysics. Cosmic physics ,QC801-809 - Abstract
Pressurized cavities are commonly used to compute ground deformation in volcanic areas: the set of available solutions is limited and in some cases the moment tensors inferred from inversion of geodetic data cannot be associated with any of the available models. Two different source models (pure tensile source, TS and mixed tensile/shear source, MS) are studied using a boundary element approach for rectangular dislocations buried in a homogeneous elastic medium employing a new C/C++ code which provides a new implementation of the dc3d Okada fortran code. Pressurized triaxial cavities are obtained assigning the overpressure in the middle of each boundary element distributed over the cavity surface. The MS model shows a moment domain very similar to triaxial ellipsoidal cavities. The TS and MS models are also compared in terms of the total volume increment limiting the analysis to cubic sources: the observed discrepancy (~10%) is interpreted in terms of the different deformation of the source interior which provides significantly different internal contributions (~30%). Comparing the MS model with a Mogi source with the some volume, the overpressure of the latter must be ~37% greater than the former, in order to obtain the same surface deformation; however the outward expansion and the inner contraction separately differ by ~±10% and the total volume increments differ only by ~2%. Thus, the density estimations for the intrusion extracted from the MS model and the Mogi model are nearly identical.
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- 2015
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8. The Challenge of the ‘Art and Science’ of Health Promotion
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Glenn Laverack
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health promotion ,community engagement ,‘art and science’ ,evidence-based ,theory and models ,Technology ,Science (General) ,Q1-390 - Abstract
Health promotion has a key role to play in preventing disease and promoting healthy lifestyles. Health promotion work is part science and part art. The science emerges from research and theory and the art emerges from our professional intuition and experience. The goal is to apply the science to achieve the best health promotion outcomes. However, an application of the theory, models and even the evidence, does not guarantee a desired outcome. To achieve this is an art and something that is often missing in practice. An understanding of how best to apply the ‘art and science’ of health promotion requires an appreciation that it is not only about being scientifically right but also about being real. The challenge for health promoters is to understand how they can use their judgement to best apply the available science to deliver successful approaches.
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- 2017
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9. Phase-field modeling of submonolayer growth with the modulated nucleation regime.
- Author
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Dong, X.L., Xing, H., Chen, C.L., Wang, J.Y., and Jin, K.X.
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PHASE transitions , *NUCLEATION , *KINETIC energy , *QUANTITATIVE research , *COEFFICIENTS (Statistics) - Abstract
In this letter, we perform the phase-field simulations to investigate nucleation regime of submonolayer growth via a quantified nucleation term. Results show that the nucleation related kinetic coefficients have changed the density of islands and critical sizes to modulate the nucleation regime. The scaling behavior of the island density can be agreed with the classical theory only when effects of modulations have been quantified. We expect to produce the quantitative descriptions of nucleation for submonolayer growth in phase-field models. [ABSTRACT FROM AUTHOR]
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- 2015
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10. One size does not fit all: gender implications for the design of outcomes, evaluation and assessment of science communication programs
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O'Connell, Christine, McKinnon, Merryn, LaBouff, Jordan, O'Connell, Christine, McKinnon, Merryn, and LaBouff, Jordan
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As science communication programs grow worldwide, effective evaluation and assessment metrics lag. While there is no consensus on evaluation protocols specifically for science communication training, there is agreement on elements of effective training: listening, empathy, and knowing your audience - core tenets of improvisation. We designed an evaluation protocol, tested over three years, based on validated and newly developed scales for an improvisation-based communication training at the Alan Alda Center for Communicating Science. Initial results suggest that 'knowing your audience' should apply to training providers as they design and evaluate their curriculum, and gender may be a key influence on outcomes.
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- 2020
11. The Challenge of the 'Art and Science' of Health Promotion.
- Author
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Laverack, Glenn
- Subjects
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ART & science , *ORGANIZATIONAL change , *COMMUNITY development , *HEALTH promotion - Abstract
Health promotion has a key role to play in preventing disease and promoting healthy lifestyles. Health promotion work is part science and part art. The science emerges from research and theory and the art emerges from our professional intuition and experience. The goal is to apply the science to achieve the best health promotion outcomes. However, an application of the theory, models and even the evidence, does not guarantee a desired outcome. To achieve this is an art and something that is often missing in practice. An understanding of how best to apply the 'art and science' of health promotion requires an appreciation that it is not only about being scientifically right but also about being real. The challenge for health promoters is to understand how they can use their judgement to best apply the available science to deliver successful approaches. [ABSTRACT FROM AUTHOR]
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- 2017
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12. The Australian science communicators conference 2020
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Scott Daniel, Jenny Martin, Mia Cobb, Lisa M. Bailey, Linden Ashcroft, Ashcroft, Linden, Cobb, Mia, Bailey, Lisa, Martin, Jenny, and Daniel, Scott
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Public awareness of science ,scholarly communication ,business.industry ,Communication ,Professional development ,Research stream ,theory and models ,Public relations ,science communication ,Scholarly communication ,2001 Communication and Media Studies, 2099 Other Language, Communication and Culture ,public engagement with science and technology ,Science communication ,Sociology ,business ,Range (computer programming) - Abstract
This special issue of JCOM features six commentary articles from the research stream of the Australian Science Communicators conference, held in February 2020. These opportunistic assessments and deliberate analyses explore important themes of trust, engagement, and communication strategy across a diverse range of scientific contexts. Together, they demonstrate the importance of opportunities to come together and share the research that underpins our practice. The conference and these commentaries enable us to engage in professional development during these exceptional times when successful evidence-based science communication is of critical significance Refereed/Peer-reviewed
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- 2020
13. Science stories as culture:Experience, identity, narrative and emotion in public communication of science
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Davies, Sarah R., Halpern, Megan, Horst, Maja, Kirby, David A., Lewenstein, Bruce, Davies, Sarah R., Halpern, Megan, Horst, Maja, Kirby, David A., and Lewenstein, Bruce
- Abstract
The last three decades have seen extensive reflection concerning how science communication should be modelled and understood. In this essay we propose the value of a cultural approach to science communication - one that frames it primarily as a process of meaning-making. We outline the conceptual basis for this view of culture, drawing on cultural theory to suggest that it is valuable to see science communication as one aspect of (popular) culture, as storytelling or narrative, as ritual, and as collective meaning-making. We then explore four possible ways that a cultural approach might proceed: by mobilising ideas about experience; by framing science communication through identity work; by focusing on fiction; and by paying attention to emotion. We therefore present a view of science communication as always entangled within, and itself shaping, cultural stories and meanings. We close by suggesting that one benefit of this approach is to move beyond debates concerning 'deficit or dialogue' as the key frame for public communication of science.
- Published
- 2019
14. DA EXOGENEIDADE AO GRADUALIMO Inovações na teoria da mudança institucional.
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da Cunha Rezende, Flávio
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INSTITUTIONALISM (Religion) ,LOGIC ,EXOGENEITY (Econometrics) ,POLITICAL stability ,CONCEPTUALISM ,TECHNOLOGICAL innovations ,CURRICULUM frameworks ,EXPLANATION (Linguistics) - Abstract
Copyright of Revista Brasileira de Ciencias Sociais is the property of Revista Brasileira de Ciencias Sociais and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2012
- Full Text
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15. Atomicity Analysis of Service Composition across Organizations.
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Chunyang Ye, Cheung, S. C., Chan, W. K., and Chang Xu
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PRIVACY , *INTERNET , *INTERNET service providers , *ALGEBRA software , *ORGANIZATIONAL transparency , *INTERNET users - Abstract
Atomicity is a highly desirable property for achieving application consistency in service compositions. To achieve atomicity, a service composition should satisfy the atomicity sphere, a structural criterion for the backend processes of involved services. Existing analysis techniques for the atomicity sphere generally assume complete knowledge of all involved backend processes. Such an assumption is invalid when some service providers do not release all details of their backend processes to service consumers outside the organizations. To address this problem, we propose a process algebraic framework to publish atomicity-equivalent public views from the backend processes. These public views extract relevant task properties and reveal only partial process details that service providers need to expose. Our framework enables the analysis of the atomicity sphere for service compositions using these public views instead of their backend processes. This allows service consumers to choose suitable services such that their composition satisfies the atomicity sphere without disclosing the details of their backend processes. Based on the theoretical result, we present algorithms to construct atomicity-equivalent public views and to analyze the atomicity sphere for a service composition. Two case studies from the supply chain and insurance domains are given to evaluate our proposal and demonstrate the applicability of our approach. [ABSTRACT FROM AUTHOR]
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- 2009
- Full Text
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16. Analyzing Image Structure by Multidimensional Frequency Modulation.
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Pattichis, Marios S. and Bovik, Alan C.
- Subjects
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IMAGE analysis , *EIGENVECTORS , *DIFFERENTIAL equations , *MATHEMATICAL analysis , *DIGITAL images , *FM radio receivers - Abstract
We develop a mathematical framework for quantifying and understanding multidimensional frequency modulations in digital images. We begin with the widely accepted definition of the instantaneous frequency vector (IF) as the gradient of the phase and define the instantaneous frequency gradient tensor (IFGT) as the tensor of component derivatives of the IF vector. Frequency modulation bounds are derived and interpreted in terms of the eigendecomposition of the IFGT. Using the IFGT, we derive the ordinary differential equations (ODEs) that describe image flowlines. We study the diagonalization of the ODEs of multidimensional frequency modulation on the IFGT eigenvector coordinate system and suggest that separable transforms can be computed along these coordinates. We illustrate these new methods of image pattern analysis on textured and fingerprint images. We envision that this work will find value in applications involving the analysis of image textures that are nonstationary yet exhibit local regularity. Examples of such textures abound in nature. [ABSTRACT FROM AUTHOR]
- Published
- 2007
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17. Science stories as culture:Experience, identity, narrative and emotion in public communication of science
- Author
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Bruce V. Lewenstein, Megan K. Halpern, David A. Kirby, Sarah R. Davies, and Maja Horst
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Communication ,05 social sciences ,Media studies ,Identity (social science) ,theory and models ,050905 science studies ,050105 experimental psychology ,Science communication ,0501 psychology and cognitive sciences ,Narrative ,Sociology ,0509 other social sciences ,art and literature ,Science and technology - Abstract
The last three decades have seen extensive reflection concerning how science communication should be modelled and understood. In this essay we propose the value of a cultural approach to science communication — one that frames it primarily as a process of meaning-making. We outline the conceptual basis for this view of culture, drawing on cultural theory to suggest that it is valuable to see science communication as one aspect of (popular) culture, as storytelling or narrative, as ritual, and as collective meaning-making. We then explore four possible ways that a cultural approach might proceed: by mobilising ideas about experience; by framing science communication through identity work; by focusing on fiction; and by paying attention to emotion. We therefore present a view of science communication as always entangled within, and itself shaping, cultural stories and meanings. We close by suggesting that one benefit of this approach is to move beyond debates concerning ‘deficit or dialogue’ as the key frame for public communication of science. Science stories as culture: experience, identity, narrative and emotion in public communication of science Copyright The Author(s). This article is licensed under the terms of the Creative Commons Attribution — NonCommercial — NoDerivativeWorks 4.0 License.
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- 2019
- Full Text
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18. Communicating Trust and Trusting Science Communication
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Theory and models ,Science communication - Abstract
Written in response to a previous article by Weingart and Guenther [2016]in JCOM, this letter aims to open up some critical issues concerning the‘new ecology of communication’. It is argued that this evolving ecologyneeds to be openly explored without looking back to a previous idyll of‘un-tainted’ science.
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- 2016
19. Revisiting public debate on Genetic Modification and Genetically Modified Organisms. Explanations for contemporary Dutch public attitudes
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Hanssen, Lucien (author), Dijkstra, Anne M. (author), Sleenhoff, S. (author), Frewer, Lynn J. (author), Gutteling, Jan M. (author), Hanssen, Lucien (author), Dijkstra, Anne M. (author), Sleenhoff, S. (author), Frewer, Lynn J. (author), and Gutteling, Jan M. (author)
- Abstract
Genetic Modification (GM) has been a topic of public debates during the 1990s and 2000s. In this paper we explore the relative importance of two hypothesized explanations for these controversies: (i) people's general attitude toward science and technology and (ii) their trust in governance, in GM actors, and in GM regulations, in explaining the Dutch public's Attitude toward GM applications, and in addition to that, the public's GM Information seeking behaviour. This will be conducted through the application of representative survey methodology. The results indicate that Attitudes toward GM applications are best predicted by both the attitude toward science and technology and three trust measures. GM information seeking is predicted by gender and educational level, as well as attitude toward science and technology, trust in organisations and trust in regulations (negative). Overall, psychological variables seem better predictors than demographics. Implications for future research on information seeking behaviour are discussed., Beheer Grootschalige (EU) Projecten
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- 2018
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20. Revisiting public debate on Genetic Modification and Genetically Modified Organisms. Explanations for contemporary Dutch public attitudes
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Susanne Sleenhoff, Lynn J. Frewer, Anne M. Dijkstra, Lucien Hanssen, Jan M. Gutteling, Communication Science, and Psychology of Conflict, Risk and Safety
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Public perception of science and technology ,Demographics ,business.industry ,Information seeking ,Communication ,Corporate governance ,Science communication: theory and models ,Public debate ,theory and models ,Public relations ,science communication ,Genetically modified organism ,Risk communication ,Survey methodology ,business ,Psychology - Abstract
Genetic Modification (GM) has been a topic of public debates during the 1990s and 2000s. In this paper we explore the relative importance of two hypothesized explanations for these controversies: (i) people's general attitude toward science and technology and (ii) their trust in governance, in GM actors, and in GM regulations, in explaining the Dutch public's Attitude toward GM applications, and in addition to that, the public's GM Information seeking behaviour. This will be conducted through the application of representative survey methodology. The results indicate that Attitudes toward GM applications are best predicted by both the attitude toward science and technology and three trust measures. GM information seeking is predicted by gender and educational level, as well as attitude toward science and technology, trust in organisations and trust in regulations (negative). Overall, psychological variables seem better predictors than demographics. Implications for future research on information seeking behaviour are discussed.
- Published
- 2018
21. Science communication and the issue of trust
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Lars Guenther and Peter Weingart
- Subjects
Science and policy-making ,business.industry ,Communication ,Communication studies ,Social science education ,theory and models ,Public relations ,Human-centered computing ,Science education ,Science and media ,Information science ,Science communication ,Political science ,Engineering ethics ,Communication sciences ,Science, technology, society and environment education ,business - Abstract
Science communication, whether internally or to the general public depends on trust, both trust in the source and trust in the medium of communication. With the new 'ecology of communication' this trust is endangered. On the one hand the very term of science communication has been captured by many different actors (e.g., governments, PR experts, universities and research institutions, science journalists, and bloggers) apart from scientists themselves to whom science communication means different things and whose communication is tainted by special interests. Some of these actors are probably more trusted by the general public than others. On the other hand, the channels that are used to communicate science are also not trusted equally. Particularly the widespread use of social media raises doubts about the credibility of the communication spread through them.
- Published
- 2016
22. Erweiterung der automatischen statischen Codeanalyse um Social Coding
- Author
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Mindermann, Kai and Mindermann, Kai
- Abstract
In dieser Masterarbeit wird zunächst eine Definition für Social Coding hergeleitet. Danach werden verschiedenen Ansätze für Social Coding in die drei Kategorien, Kommunikation, Kooperation und Koordination des 3C-Modells sowie nach der grundlegenden Art des Ansatzes eingeteilt. Zu den analysierten Ansätzen gehören Online-Plattformen wie Stack Overflow und GitHub sowie Entwicklungsumgebungen und Erweiterungen davon wie Cloud9 und Visual Studio Anywhere. Im Weiteren werden zwei Ansätze zur Erweiterung der statischen Code-Analyse Software FindBugs um Social Coding vorgestellt. Die erste Erweiterung bietet dem Benutzer die Möglichkeit gefundene Bugs zu Online-Plattformen zu exportieren während die zweite Erweiterung ein eigenes Bug-Tracking-System mit dem Hauptaugenmerk auf einem Kommentarsystem im Quellcode-Repository des Projekts abbildet und mit einer modernen Oberfläche präsentiert., A definition for the term social coding is derived first in this thesis. Afterwards different approaches for social coding are put in the three categories, communication, cooperation and coordination of the 3C-Model as well as grouped by the kind of their approach. The analyzed approaches consist of online platforms like Stack Overflow and GitHub and also development environments and extensions of them like Cloud9 and Visual Studio Anywhere. Apart from that two approaches that add social coding to the static code analysis software FindBugs are being presented. The first approach offers an export possibility to an online platform for bugs whereas the second approach implements social coding itself in form of a bug-tracking-system with focus on a commenting-system and presenting that through a modern user interface.
- Published
- 2014
23. De l'éxog énéité au gradualisme: innovations dans la théorie du changement institutionnel
- Author
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Rezende, Flávio da Cunha
- Subjects
Ciência política comparada ,Historical new institutionalism ,Modèles et théories ,Novo institucionalismo histórico ,Science politique comparée ,Theory and models ,Modelos e teorias ,Teoria da mudança institucional ,Comparative political science ,Institutional change theory ,Nouvel institutionnalisme historique ,Théorie du changement institutionnel - Abstract
Este artigo analisa três inovações analíticas produzidas pela segunda geração do novo institucionalismo histórico sobre o problema da mudança na ciência política comparada. A análise reside na compreensão das alternativas encontradas para superar os limites tradicionais dos modelos centrados em premissas de estabilidade e ênfase causal nos fatores exógenos. O argumento é de que a segunda geração de pesquisas tem produzido um conjunto de sensíveis transformações analíticas e conceituais, incluindo novos conceitos, categorias analíticas e mecanismos causais para compreender a mudança de forma mais apropriada. This paper explores three core analytical innovations: Lieberman (2002), Greif (2006), and Mahoney and Thelen (2010), produced by the second generation of historical new institutionalism about endogenous institutional change. It explores the logic of the key conceptual and analytical transformations in the recent methodological debate over issues on how to expand the explanatory powers of traditional models overcoming the exogeneity and stability bias problems. The main argument is that there is a substantial set of transformations coming through in the new institutional agenda via the introduction of new conceptualizations, theoretical frameworks and, fundamentally, through the consideration of a new set of causal mechanisms that allows new models to expand and deepen the analysis of institutional change mainly taking into account institutional causes. Cet article analyse trois innovations analytiques produites par la seconde génération du nouvel institutionnalisme historique à propos du problème du changement dans la science politique comparée. L'analyse réside sur la compréhension des alternatives rencontrées pour dépasser les limites traditionnelles des modèles centrés sur des prémisses de stabilité et de l'accent de causalité sur les facteurs exogènes. L'argument est celui selon lequel la seconde génération de recherches produit un ensemble d'importantes transformations analytiques et conceptuelles, incluant de nouveaux concepts, des catégories analytiques et des mécanismes de causalité pour comprendre le changement de forme le plus appropriée.
- Published
- 2012
24. Visuelle Modellierung von Screenflows
- Author
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Giuliani, Timotheus and Giuliani, Timotheus
- Abstract
Automatisierte Prozesse erfordern häufig Interaktionen mit Menschen. Für diese Human Tasks werden in der Regel Benutzungsschnittstellen benötigt. Für die Umsetzung und Bereitstellung von Benutzungsschnittstellen eignen sich Portale sehr gut. Im Portal werden die einzelnen Human Tasks durch die Nutzung von Task Listen einer potenziellen Gruppe an Nutzern zur Verfügung gestellt. Über die Task Liste wird in der Regel ein Human Task einer entsprechenden Portalseite (Screen) zugeordnet. Allerdings hat sich herausgestellt, dass eine einfache 1:1 Abbildung zwischen Human Tasks und Portalseiten nicht immer ausreichend ist. Oft ergibt sich die Notwendigkeit, eine von einem einzelnen Nutzer schnell zu prozessierende Abfolge von Human Tasks über mehrere Screens abzuarbeiten. Es ist unnötig und unpraktikabel jeden dieser Screens auf einen Human Task abzubilden, vor allem wenn die Prozessierung kurzlebig und kein Wechsel zwischen Nutzern notwendig ist. Als Lösung wurden Screenflows eingeführt, die es erlauben, eine Abfolge von Screens im Portal deklarativ zu modellieren. Im Zusammenspiel mit einem Workflow kann nun die Kontrolle für einen einzelnen Human Task an das Portal übergeben werden. Das Portal stellt dann eine Abfolge von Screens, entsprechend des modellierten Screenflows, zur Verfügung. Anschließend gibt es die Kontrolle an das Workflowsystem zurück. Diese Lösung erlaubt eine Abbildung eines Human Tasks auf einen Screenflow. Die Modellierung der Screenflows geschieht derzeit noch über komplexe XML-Beschreibungen, welche für technisch nicht versierten Nutzer unverständlich sind. In dieser Arbeit wird der Entwurf und die Entwicklung eines Modellierungswerkzeugs für die visuelle Modellierung von Screenflows beschrieben. Es werden Konzepte vorgestellt, welche für die Umsetzung einer geeigneten Lösung benötigt werden. Diese Konzepte werden anschließend prototypisch in einem webbasierten Modellierungswerkzeug umgesetzt. Abschießend werden die erarbeiteten Konzepte auf Modelli
- Published
- 2013
25. Interaktionskonzept zur Datenanalyse auf Basis eines Tabletop-Computers und Tangible-Objekten
- Author
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Duschek, Alexander and Duschek, Alexander
- Abstract
Neue Interaktionskonzepte basieren auf Tangible User Interfaces oder Finger- und Gestensteuerung. Sie ermöglichen kollaboratives Arbeiten, natürlichere Interaktion und machen mehr Spaß. Die kollaborative Datenanalyse lässt sich mit traditionellen Eingabegeräten wie Maus und Tastatur nur schwer durchführen. Daher stellt diese Diplomarbeit ein Interaktionskonzept zur Datenanalyse auf Basis eines Tabletop-Computers und Tangible-Objekten vor. Die Tangibles verfügen dabei über Sensoren und Kommunikationsgeräte (Active Tangibles), um neue Interaktionsmodalitäten anzubieten und die Benutzererfahrung zu verbessern. Das Konzept sowie der entstandene Prototyp wurden jeweils an Hand einer Studie evaluiert., New interaction techniques can be based on Tangible User Interfaces or finger and gesture control. These types of interfaces allow users to collaboratively work in a team with natural interactions and to have fun. Due to that a collborative data analysis is difficult to realize with standard input devices like mice and keyboards, this work presents an interaction concept for data analysis based on a tabletop computer and tangible objects. The tangible objects have sensors and communication modules (Active Tangibles) to offer new interaction modalities and enhance user experience. The concept and the developed prototype were both evaluated by a user study.
- Published
- 2013
26. Herramienta para modelado conceptual de bases de datos
- Author
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Antonetti, María Soledad, Miglio, Carlos Ariel, Thomas, Pablo Javier, and Bertone, Rodolfo Alfredo
- Subjects
Modeling techniques ,Theory and models ,modelos conceituais ,design de banco de dados ,modelos conceptuales ,diseño de base de datos ,Ciencias Informáticas ,conceptual models ,design database - Abstract
La tarea de modelado conceptual no es sencilla y comprende un proceso iterativo, durante el cual se comienza con una versión inicial, la que va sufriendo transformaciones que terminan generando la versión definitiva. El modelo obtenido finalmente representa la información del problema a resolver y las necesidades del usuario. El diseño conceptual tiene diferentes enfoques. El utilizado por la cátedra de Introducción a las Bases de Datos de la Facultad de Informática es el propuesto por [1], el cual actualmente carece de soporte de una herramienta de software. De esta forma, el proceso de definición de un modelo conceptual se transforma en una tarea manual muy tediosa, utilizando solo papel y lápiz, o basándose en herramientas de edición gráfica que no están diseñadas para trabajar con un modelo de datos que se ajuste en forma precisa a los conceptos teóricos vistos en la cátedra. En este marco se establece la necesidad de implementación de una herramienta que se incorpore en los trabajos prácticos de la materia, y de ese modo, provea soporte en la generación de modelos conceptuales., Facultad de Informática
- Published
- 2009
27. Tabletop-Computer-basierte Steuerung für Powerwall-Visualisierungen
- Author
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Püttmann, Edwin and Püttmann, Edwin
- Abstract
Bei der Analyse von Daten aus komplexen Themengebieten werden trotz moderner visueller Werkzeuge oft interessante Muster und Details nach wie vor leicht übersehen. Aus diesem Grund werden komplexe Daten meist von mehreren Personen analysiert. Dazu können großflächige Displays zur Anzeige der Daten genutzt werden, die jedoch mit herkömmlichen Eingabegeräten, wie Maus und Tastatur, sich nur sehr eingeschränkt bedienen lassen. Seit einigen Jahren stehen Geräte zur kollaborativen Arbeit zur Verfügung beispielsweise in Form von Tabletops. Diese Arbeit stellt ein Interaktionskonzept für die kollaborative Arbeit von Benutzern mit einer Powerwall basierend auf einer Tabletop-Steuerung vor. Es wurde auf Basis des Konzepts ein Framework entwickelt, das die Steuerung einer Powerwall durch einen Tabletop sowie die Einbindung von weiteren Geräten zur Interaktion ermöglicht. Das Interaktionskonzept der Tabletop-Steuerung wurde anhand einer Studie evaluiert und daraufhin ein Prototyp entwickelt., While analyzing data belonging to complex subjects, interesting details or patterns are still easily overlooked, even with modern visualization tools. Therefore, those analyses are mostly performed by several persons. For this, large-scaled screens are used to display the data, but those screens are only limited operable with common input devices, like keyboard and mouse. For a couple of years devices for collaborative work are available, for example in the form of tabletops. This thesis introduces a concept for the interaction of users with a powerwall and a tabletop-based control for collaborative work. Based on this concept, a framework was developed which allows the control of a powerwall through a tabletop and the integration of additional devices. The interaction concept of the tabletop control was evaluated by a study and subsequently a prototype was developed.
- Published
- 2012
28. Omnidirektionale Datenvisualisierung - Kollaborative Arbeit auf horizontalen Displays
- Author
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Auwärter, Patrick, Berger, Peter, Sonnauer, Oliver, Auwärter, Patrick, Berger, Peter, and Sonnauer, Oliver
- Abstract
Diese Fachstudie befasst sich mit der Vorstellung und Bewertung von Konzepten, welche für die Informationsdarstellung auf horizontalen, von verschiedenen Richtungen aus bedienbaren Displays geeignet sind. Aus recherchierten Erfahrungsberichten über die kollaborative Arbeit an horizontalen Displays wurde zunächst ein Katalog von wichtigen Anforderungen an die Darstellungskonzepte zusammengestellt. Zu den gefundenen Anforderungen zählen zum Beispiel die Betrachtbarkeit der Darstellung aus mehreren Blickwinkeln und die Möglichkeit der gleichzeitigen Benutzung von Objekten durch mehrere Akteure. Danach wurden existierende und angedachte Darstellungskonzepte gesucht. Die verschiedenen Konzepte wurden anschließend auf Basis des Anforderungskatalogs miteinander verglichen. Dabei ergab sich, dass das Konzept "Lark" den Großteil der gestellten Anforderungen erfüllt und somit zu den fortgeschrittensten Konzepten zählt. Da jedoch keines der vorgestellten Konzepte alle Anforderungen erfüllt, wurden zuletzt noch Verbesserungsvorschläge erarbeitet und vorgestellt.
- Published
- 2012
29. Atomicity Analysis of Service Composition across Organizations
- Author
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Ye, Chunyang, Cheung, Shing Chi, Chan, W.K., Xu, Chang, Ye, Chunyang, Cheung, Shing Chi, Chan, W.K., and Xu, Chang
- Abstract
Atomicity is a highly desirable property for achieving application consistency in service compositions. To achieve atomicity, a service composition should satisfy the atomicity sphere, a structural criterion for the backend processes of involved services. Existing analysis techniques for the atomicity sphere generally assume complete knowledge of all involved backend processes. Such an assumption is invalid when some service providers do not release all details of their backend processes to service consumers outside the organizations. To address this problem, we propose a process algebraic framework to publish atomicity-equivalent public views from the backend processes. These public views extract relevant task properties and reveal only partial process details that service providers need to expose. Our framework enables the analysis of the atomicity sphere for service. compositions using these public views instead of their backend processes. This allows service consumers to choose suitable services such that their composition satisfies the atomicity sphere without disclosing the details of their backend processes. Based on the theoretical result, we present algorithms to construct atomicity-equivalent public views and to analyze the atomicity sphere for a service composition. Two case studies from the supply chain and insurance domains are given to evaluate our proposal and demonstrate the applicability of our approach.
- Published
- 2009
30. Consistency Algorithms and Protocols for Distributed Interactive Applications
- Author
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Vogel, Jürgen and Vogel, Jürgen
- Abstract
The Internet has a major impact not only on how people retrieve information but also on how they communicate. Distributed interactive applications support the communication and collaboration of people through the sharing and manipulation of rich multimedia content via the Internet. Aside from shared text editors, meeting support systems, and distributed virtual environments, shared whiteboards are a prominent example of distributed interactive applications. They allow the presentation and joint editing of documents in video conferencing scenarios. The design of such a shared whiteboard application, the multimedia lecture board (mlb), is a main contribution of this thesis. Like many other distributed interactive applications, the mlb has a replicated architecture where each user runs an instance of the application. This has the distinct advantage that the application can be deployed in a lightweight fashion, without relying on a supporting server infrastructure. But at the same time, this peer-to-peer architecture raises a number of challenging problems: First, application data needs to be distributed among all instances. For this purpose, we present the network protocol RTP/I for the standardized communication of distributed interactive applications, and a novel application-level multicast protocol that realizes efficient group communication while taking application-level knowledge into account. Second, consistency control mechanisms are required to keep the replicated application data synchronized. We present the consistency control algorithms local lag, Timewarp, and state request, show how they can be combined, and discuss how to provide visual feedback so that the session members are able to handle conflicting actions. Finally, late-joining participants need to be initialized with the current application state before they are able to participate in a collaborative session. We propose a novel late-join algorithm, which is both flexible and scalable. All alg, Das Internet hat sich zu einem alltäglichen und universellen Werkzeug der Informationsbeschaffung und der zwischenmenschlichen Kommunikation entwickelt. Durch den Austausch von multimedialen Inhalten über das Internet ermöglichen es so genannte verteilte interaktive Anwendungen einer Gruppe von Benutzern, miteinander zu kommunizieren und zusammenzuarbeiten. Beispiele für verteilte interaktive Anwendungen sind Mehrbenutzer-Texteditoren, Systeme zur Unterstützung von Projektteams, virtuelle Realitäten und Shared Whiteboards. Letztere dienen zum Präsentieren und Erstellen von Dokumenten in Videokonferenz-Szenarien. Die Entwicklung eines solchen Shared Whiteboards, des multimedia lecture boards (mlb), ist ein zentraler Beitrag dieser Dissertation. Wie viele andere verteilte interaktive Anwendungen auch hat das mlb eine replizierte Architektur, bei der jeder Benutzer auf seinem lokalen Rechner eine vollwertige und gleichberechtigte Anwendungsinstanz ausführt. Eine solche Architektur hat den Vorteil, dass die Anwendung ohne die Installation von zentralen Serverkomponenten sofort einsetzbar ist. Gleichzeitig birgt eine replizierte Architektur aber auch eine Reihe von technischen Herausforderungen, die von einer verteilten interaktiven Anwendung gelöst werden müssen: Zunächst ist es erforderlich, die Anwendungsdaten über geeignete Netzwerkprotokolle zwischen den beteiligten Anwendungsinstanzen auszutauschen. Zu diesem Zweck wurden im Rahmen dieser Dissertation das RTP/I-Protokoll zur standardisierten Kommunikation und ein neuartiges Protokoll zur effizienten Multicast-Kommunikation auf Anwendungsebene unter Berücksichtigung von Anwendungswissen entwickelt. Des Weiteren werden Verfahren zur Konsistenzerhaltung benötigt, die die replizierten Anwendungsdaten miteinander abgleichen und auf dem neuesten Stand halten. Die Dissertation stellt die Konsistenzerhaltungs-Mechanismen Local Lag, Timewarp und Zustandsanfrage vor und zeigt, wie diese kombiniert werden können. Zusätzlich w
- Published
- 2004
31. Phenomenological theory for ±s-wave superconducting states of iron-based superconductors
- Author
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Machida, M., Nagai, Y., Ota, Y., Nakai, N., Nakamura, H., and Hayashi, N.
- Subjects
- *
PHENOMENOLOGICAL theory (Physics) , *SHEAR waves , *SUPERCONDUCTIVITY , *ENERGY bands , *SYMMETRY (Physics) , *CRITICAL currents , *JOSEPHSON junctions - Abstract
Abstract: We briefly present three phenomenological theoretical works for superconducting properties in iron-based superconductors. The first is a suggestion of multi-band ±s-wave pairing model consistently explaining different measurement data, the second a proposal to detect ±s-wave signature, and the third an evaluation of the critical current in poly-crystalline samples by considering ±s-wave symmetry. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
32. Small jump of specific heat and small gap in iron pnictide superconductors
- Author
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Nakai, N., Nakamura, H., Ota, Y., Nagai, Y., Hayashi, N., and Machida, M.
- Subjects
- *
SPECIFIC heat , *BAND gaps , *IRON compounds , *SUPERCONDUCTORS , *ENERGY bands , *PHOTOELECTRON spectroscopy - Abstract
Abstract: We demonstrate that a realistic multi-band model consistently explains the specific heat of typical iron-based superconductor. With density of states of each band obtained by first principle calculations, we evaluate multiple full-gap amplitudes from the angle resolved photoemission spectroscopy and successfully reproduce the specific heat. Consequently, it is found that the specific heat strongly depends density of states. In addition, the present calculations reveal that superconducting states of the iron-based pnictide are mainly characterized by two factors. One is an amplitude difference between large and small gaps, and the other is the distribution of their gap amplitudes. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
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