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See detailBridging the gap between GRACE and GRACE follow-on: the potential of SWARM and SLR to detect time-variable gravity
Baur, O.; Reubelt, T.; Weigelt, Matthias UL

Scientific Conference (2013, September)

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See detailBridging the gap between growth theory and the new economic geo-graphy : The spatial Ramsey model
Boucckine, Raouf; Camacho, Carmen; Zou, Benteng UL

in Macroeconomic Dynamics (2009), 13(1), 20-45

We study a Ramsey problem in in¯nite and continuous time and space. The problem is discounted both temporally and spatially. Capital flows to locations with higher marginal return. We show that the ... [more ▼]

We study a Ramsey problem in in¯nite and continuous time and space. The problem is discounted both temporally and spatially. Capital flows to locations with higher marginal return. We show that the problem amounts to optimal control of parabolic partial differential equations (PDEs). We rely on the existing related mathematical literature to derive the Pontryagin conditions. Using explicit representations of the solutions to the PDEs, we first show that the resulting dynamic system gives rise to an ill-posed problem in the sense of Hadamard (1923). We then turn to the spatial Ramsey problem with linear utility. The obtained properties are significantly different from those of the non-spatial linear Ramsey model due to the spatial dynamics induced by capital mobility. [less ▲]

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See detailBridging the Gap between Requirements Modeling and Behavior-driven Development
Alferez, Mauricio UL; Pastore, Fabrizio UL; Sabetzadeh, Mehrdad UL et al

in Proceedings of 22nd IEEE / ACM International Conference on Model Driven Engineering Languages and Systems (MODELS) (2019, September)

Acceptance criteria (AC) are implementation agnostic conditions that a system must meet to be consistent with its requirements and be accepted by its stakeholders. Each acceptance criterion is typically ... [more ▼]

Acceptance criteria (AC) are implementation agnostic conditions that a system must meet to be consistent with its requirements and be accepted by its stakeholders. Each acceptance criterion is typically expressed as a natural-language statement with a clear pass or fail outcome. Writing AC is a tedious and error-prone activity, especially when the requirements specifications evolve and there are different analysts and testing teams involved. Analysts and testers must iterate multiple times to ensure that AC are understandable and feasible, and accurately address the most important requirements and workflows of the system being developed. In many cases, analysts express requirements through models, along with natural language, typically in some variant of the UML. AC must then be derived by developers and testers from such models. In this paper, we bridge the gap between requirements models and AC by providing a UML-based modeling methodology and an automated solution to generate AC. We target AC in the form of Behavioral Specifications in the context of Behavioral-Driven Development (BDD), a widely used agile practice in many application domains. More specially we target the well-known Gherkin language to express AC, which then can be used to generate executable test cases. We evaluate our modeling methodology and AC generation solution through an industrial case study in the financial domain. Our results suggest that (1) our methodology is feasible to apply in practice, and (2) the additional modeling effort required by our methodology is outweighed by the benefits the methodology brings in terms of automated and systematic AC generation and improved model precision. [less ▲]

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See detailBRIDGING THE GAP: CHILDHOOD LANGUAGE ACQUISITION AND CREOLE GENESIS
Ehrhart, Sabine UL

in Journal of the Linguistic Society of Papua New Guinea (2017)

This article presents two cases of specific language ecologies that emerged in the South Pacific at the end of the nineteenth and the beginning of the twentieth century: Palmerston English, spoken on a ... [more ▼]

This article presents two cases of specific language ecologies that emerged in the South Pacific at the end of the nineteenth and the beginning of the twentieth century: Palmerston English, spoken on a remote atoll in the Cook Islands, and Tayo, a school creole from the Catholic mission of Saint-Louis in New Caledonia. Both are still spoken and even expanding at present. Findings from these creoles with English and French lexifiers may be of interest to studies of German-based contact languages with similar initial ecologies. Based on the description of the environment where those two contact languages emerged, we would like to start a discussion about the parameters that influence the creation of new languages in specific contexts, such as these languages and Unserdeutsch. [less ▲]

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See detailBridging the space systems performance-reliability gap for future deep space resources exploration and exploitation.
Pinto Gouveia, Ines UL; Graczyk, Rafal UL; Volp, Marcus UL

Poster (2021, April)

In building equipment for space exploitation, one has to trade system robustness for the high processing capabilities and low energy consumption. The high performance, low robustness approach, is ... [more ▼]

In building equipment for space exploitation, one has to trade system robustness for the high processing capabilities and low energy consumption. The high performance, low robustness approach, is acceptable, especially in Earths’ vicinity. However, in more demanding (especially high-radiation) environments, attempts had disappointing outcomes. The processing-reliability gap, between highly reliable and highly performant systems, spans 2-3 orders of magnitude. This gap brings hope, that some of this excess processing power can be utilized, in building a combination of hardware and software mechanisms that is capable of increasing robustness and resilience of otherwise susceptible semiconductor devices, while allowing to harness the remaining processing power to build affordable space systems with large degrees of autonomy, rich functionality and high bandwidth. At the CritiX research group, we aim to bridge this performance-reliability gap, by researching the enabling building blocks for constructing more reliable and more secure System-on-Chips. [less ▲]

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See detailBridging two worlds: Reconciling practical risk assessment methodologies with theory of attack trees
Gadyatskaya, Olga UL; Harpes, Carlo; Mauw, Sjouke UL et al

in Proc. of GraMSec (2016)

Security risk treatment often requires a complex cost-benefit analysis to be carried out in order to select countermeasures that optimally reduce risks while having minimal costs. According to ISO/IEC ... [more ▼]

Security risk treatment often requires a complex cost-benefit analysis to be carried out in order to select countermeasures that optimally reduce risks while having minimal costs. According to ISO/IEC 27001, risk treatment relies on catalogues of countermeasures, and the analysts are expected to estimate the residual risks. At the same time, recent advancements in attack tree theory provide elegant solutions to this optimization problem. In this short paper we propose to bridge the gap between these two worlds by introducing optimal countermeasure selection problem on attack-defense trees into the TRICK security risk assessment methodology. [less ▲]

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See detailBrief announcement: Asynchronous bounded expected delay networks
Bakhshi, R.; Endrullis, Joerg; Fokkink, W. J. et al

in Proc. 29th Annual ACM Symposium on Principles of Distributed Computing (2010)

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See detailBrief DISCERN, six questions for the evaluation of evidence-based content of health-related websites.
Khazaal, Yasser; Chatton, Anne; Cochand, Sophie et al

in Patient Education and Counseling (2009), 77(1), 33-7

OBJECTIVE: To extract and to validate a brief version of the DISCERN which could identify mental health-related websites with good content quality. METHOD: The present study is based on the analysis of ... [more ▼]

OBJECTIVE: To extract and to validate a brief version of the DISCERN which could identify mental health-related websites with good content quality. METHOD: The present study is based on the analysis of data issued from six previous studies which used DISCERN and a standardized tool for the evaluation of content quality (evidence-based health information) of 388 mental health-related websites. After extracting the Brief DISCERN, several psychometric properties (content validity through a Factor analysis, internal consistency by the Cronbach's alpha index, predictive validity through the diagnostic tests, concurrent validity by the strength of association between the Brief DISCERN and the original DISCERN scores) were investigated to ascertain its general applicability. RESULTS: A Brief DISCERN composed of two factors and six items was extracted from the original 16 items version of the DISCERN. Cronbach's alpha coefficients were more than acceptable for the complete questionnaire (alpha=0.74) and for the two distinct domains: treatments information (alpha=0.87) and reliability (alpha=0.83). Sensibility and specificity of the Brief DISCERN cut-off score > or =16 in the detection of good content quality websites were 0.357 and 0.945, respectively. Its predictive positive and negative values were 0.98 and 0.83, respectively. A statistically significant linear correlation was found between the total scores of the Brief DISCERN and those of the original DISCERN (r=0.84 and p<0.0005). CONCLUSION: The Brief DISCERN seems to be a reliable and valid instrument able to discriminate between websites with good and poor content quality. PRACTICE IMPLICATIONS: The Brief DISCERN is a simple tool which could facilitate the identification of good information on the web by patients and general consumers. [less ▲]

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See detailBrief hypnotherapeutic-behavioral intervention for functional abdominal pain and irritable bowel syndrome in childhood: A randomized controlled trial
Gulewitsch, Marco; Müller, Judith; Hautzinger, Martin et al

in European Journal of Pediatrics (2013)

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See detailA Brief Introduction to the Shkop Approach to Conflict Resolution in Formal Argumentation
Gabbay, Dov M. UL; Kampik, Timotheus

in Liao, Beishui; Jieting, Luo; van der Torre, Leon (Eds.) Logics for New-Generation AI 2021 (2021)

In this paper, we formalise the Shkop approach to conflict resolution in formal argumentation, in which we start with an empty abstract argumentation framework AF and an initially empty set of inferred ... [more ▼]

In this paper, we formalise the Shkop approach to conflict resolution in formal argumentation, in which we start with an empty abstract argumentation framework AF and an initially empty set of inferred arguments. Then, we expand AF one argument at a time, and evaluate after each expansion if i) arguments that have previously been inferred can be kept (or have to be discarded due to sufficient doubt) and ii) if the newly added argument can be added to the set of inferred arguments. Based on this idea, we introduce a novel approach for designing abstract argumentation semantics. As a particular semantics, we define grounded Shkop semantics – a naive set-based argumentation semantics that does not inhibit a well-known problem of CF2 semantics. [less ▲]

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See detailBrief knowledge scales for the measurement of crystallized intelligence.
Schipolowski, S.; Wilhelm, O.; Schroeders, U. et al

Scientific Conference (2012, July)

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See detailEin Brief über den »Phöbus«. Adam Müller an den Verleger Reimer, 23.1.1801
Amann, Wilhelm UL

in Brandenburger Kleist-Blätter (1996), 6

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See detailBriefe, Freundschaft und religiöse Netzwerke im frühen Christentum
Ghetta, Marcello UL

in Daniel Bauerfeld und Lukas Clemens (Hg.): Gesellschaftliche Umbrüche und religiöse Netzwerke. Analysen der Antike bis zur Gegenwart (2014)

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See detailBriefwechsel zwischen Eduard Spranger und Käthe Hadlich 1903-1960. Digitale Briefedition.
Priem, Karin UL; Horn, Klaus-Peter

E-print/Working paper (2011)

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See detailBrillouin light scattering during shearing of complex fluids
Lehr, Claudius Moritz UL; Astasheva, Olga UL; Baller, Jörg

in Optics Express (2021), 29(11), 16019-16031

A setup for the optical measurement of elastic properties during the flow of complex fluids is presented. Brillouin light scattering and rotational rheology are combined in order to simultaneously measure ... [more ▼]

A setup for the optical measurement of elastic properties during the flow of complex fluids is presented. Brillouin light scattering and rotational rheology are combined in order to simultaneously measure the high-frequency longitudinal elastic modulus in a classical rheometer along with the zero-shear viscosity. Brillouin light scattering allows for the contactless determination of local elastic properties. First measurements of a diluted polymer system suggest a homogeneous orientation of polymer molecules throughout the sample as soon as a critical shear rate has been reached at one spatial position. [less ▲]

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See detailBrillouin spectroscopy applied to the characterization of SAW propagation losses in langasite
Vincent, Brice; Aubert, Thierry; Elmazria, Omar et al

in Abstract book of 2010 IEEE International Ultrasonics Symposium (2010)

High performance Brillouin microscopy has been used in order to directly measure the propagation losses of surface acoustic wave in Langasite substrate. The interdigital transducers (IDTs) were designed ... [more ▼]

High performance Brillouin microscopy has been used in order to directly measure the propagation losses of surface acoustic wave in Langasite substrate. The interdigital transducers (IDTs) were designed to generate several harmonics leading to induce acoustic waves with different wavelengths. The induced phonons were detected and characterized at different frequencies and at different distance from IDTs leading to precisely determine the propagation losses for all the excited frequencies 681, 1267 and 1463 MHz. [less ▲]

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See detailBringing Digital Oral History to Luxembourg
Lambert, Douglas UL

Scientific Conference (2019, September 13)

Oral history is a field with a growing digital component and, as with other DH fields, computer-based techniques and systems have revolutionized the way we process and present content. One particular set ... [more ▼]

Oral history is a field with a growing digital component and, as with other DH fields, computer-based techniques and systems have revolutionized the way we process and present content. One particular set of activities, which I refer to as Oral History Digital Indexing (OHDI), has been important in shaping new processes and methods for organization, analysis, and curation of digital oral history. I have been directly involved with this work in the United States and am currently working in Luxembourg to explore what aspects of OHDI will be appropriate in Europe. In this presentation I will introduce the organizations, projects, and tools that have helped shape OHDI. Among these projects/products is the Oral History Metadata Synchronizer, or OHMS, which has two important modes of digital indexing for oral histories. One is a transcript synchronization tool and the second an indexing tool, both of which help create multimedia webpages that connect interviews in an audio/video media player with text representations of the content. OHMS and other tools will be highlighted briefly, while emphasizing that no two systems have exactly the same features. One unifying principle behind OHDI tools is that indexing processes, i.e., creating shorter, summarizing text tied to time points in the a/v media, can and should take priority over word-for-word transcription. The indexing concept leads to multiple options for processing, analyzing, and presenting an oral history and OHDI also provides a framework for operating under the inevitable reality that not all digital processing options are feasible to pursue. [less ▲]

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See detailBringing empathy into play: On the effects of empathy in violent and nonviolent video games
Happ, Christian UL; Melzer, André UL; Steffgen, Georges UL

in Anacleto, J.L.; Fels, S.; Graham, N. (Eds.) et al Entertainment Computing - ICEC 2011: 10th International Conference, ICEC 2011, Vancouver, BC, Canada, October 5-8, 2011, 6972 (2011)

While violent media has adverse effects on cognition, emotion and behavior, prosocial content promotes these variables in a prosocial way. Greater individual levels of empathy as well as increasing the ... [more ▼]

While violent media has adverse effects on cognition, emotion and behavior, prosocial content promotes these variables in a prosocial way. Greater individual levels of empathy as well as increasing the level of empathy in media content typically foster prosocial behavior and reduce aggression. Two experiments replicated game content findings, and also showed that inducing empathy prior to a video game had a positive influence on behavior. However, under certain circumstances, inducing empathy before playing a violent video game may even have negative effects on behavior. As empathy is a common tool in prevention programs, the implications of these findings are discussed. [less ▲]

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See detailBringing Mankind to the Moon: The Human Rights Narrative in the Space Age
Blount, Percy UL; Molina, David M.

in Odum, Brian; Waring, Stephen (Eds.) NASA and the Long Civil Rights Movement (2019)

Detailed reference viewed: 27 (1 UL)