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See detailEffect of Dopant Ordering on the Stability of Ferroelectric Hafnia
Sangita Dutta; Hugo Aramberri; Tony Schenk et al

in Physica Status Solidi. Rapid Research Letters (2020)

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See detailMicro-reversibility and thermalization with collisional baths
Ehrich, Jannik; Esposito, Massimiliano UL; Barra, Felipe et al

in Physica A. Statistical Mechanics and its Applications (2020)

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See detailWhich App to Choose? An Online Tool that Supports the Decision-making Process of Recreational Runners to Choose an App
Janssen, Mark; Lallemand, Carine UL; Hoes, Kevin et al

in Proceedings of the 6th International Conference on Design4Health Amsterdam 2020 (2020)

In recent years, there has been an exponential increase in the use of health and sports-related smartphone applications (apps). This is also reflected in App-stores, which are stacked with thousands of ... [more ▼]

In recent years, there has been an exponential increase in the use of health and sports-related smartphone applications (apps). This is also reflected in App-stores, which are stacked with thousands of health- and sports-apps, with new apps launched each day. These apps have great potential to monitor and support people’s physical activity and health. For users, however, it is difficult to know which app suits their needs. In this paper, we present an online tool that supports the decision-making process for choosing an appropriate app. We constructed and validated a screening instrument to assess app content quality, together with the assessment of users’ needs. Both served as input for building the tool through various iterations with prototypes and user tests. This resulted in an online tool which relies on app content quality scores to match the users’ needs with apps that score high in the screening instrument on those particular needs. Users can add new apps to the database via the screening instrument, making the tool self supportive and future proof. A feedback loop allows users to give feedback on the recommended app and how well it meets their needs. This feedback is added to the database and used in future filtering and recommendations. The principles used can be applied to other areas of sports, physical activity and health to help users to select an app that suits their needs. Potentially increasing the long-term use of apps to monitor and to support physical activity and health. [less ▲]

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See detailStochastic and Quantum Thermodynamics of Driven RLC Networks
Freitas, Jose Nahuel UL; Delvenne, Jean-Charles; Esposito, Massimiliano UL

in Physical Review X (2020)

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See detailThe office jungle: A vision for wildness to turn offices into jungles
Nieuweboer, I.; Damen, I.; Brombacher, H. et al

in DIS 2020 Companion - Companion Publication of the 2020 ACM Designing Interactive Systems Conference (2020)

The Office Jungle is an experimental office environment designed to make offices more "wild". Through this demonstration and associated design vision, we make a first attempt to reflect on and to define ... [more ▼]

The Office Jungle is an experimental office environment designed to make offices more "wild". Through this demonstration and associated design vision, we make a first attempt to reflect on and to define what characterizes wildness and how it could empower people in more playful and active lifestyles, particularly in the workplace. In our understanding, wildness is not an exclusive property of nature, but rather a condition that can be designed for. How wildness can be designed is described here in a set of design principles called "Design for Wildness", inspired by the work of Gibson. The Office Jungle, a large geodesic sphere of 2 meters in diameter, is part and parcel of these design principles and can be used as a tool to design other wild environments. Such environments could benefit people working in the office, many of whom have been suffering the consequences of a sedentary lifestyle. © 2020 Owner/Author. [less ▲]

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See detailStructural and Raman study of the thermoelectric solid solution Sr1.9La0.1Nb2O7
Ojeda-Galván, Hiram Joazet; Rodríguez-Aranda, Ma. del Carmen; Rodríguez, Angel Gabriel et al

in Journal of Raman Spectroscopy (2020)

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See detailPositionPeak: Stimulating position changes during meetings
Damen, Ida; Heerkens, Lidewij; Van Den Broek, Annabel et al

in Conference on Human Factors in Computing Systems - Proceedings (2020)

In office environments, workers spend the majority of their workday sitting in a static position behind a desk or around a meeting table. Prolonged sitting time and sedentary behavior have severe negative ... [more ▼]

In office environments, workers spend the majority of their workday sitting in a static position behind a desk or around a meeting table. Prolonged sitting time and sedentary behavior have severe negative health effects. Through this explorative study, we studied how different postures can be stimulated during meetings. We designed PositionPeak: three pieces of furniture aimed at composing a 'dynamic meeting room', subtly encouraging participants to avoid static postures. We video-recorded 5 meetings (N=16) and coded the number of position changes per participant. Participants also filled out a pre- and post-questionnaire about their experience. Our findings show that PositionPeak triggers people to adopt a variety of postures. Participants on average experienced a more efficient meeting but reported physical discomfort with some objects. We discuss the influence of PositionPeak on the meetings' social dynamics, the acceptance of new conventions and design recommendations for new meeting facilities. © 2020 Owner/Author. [less ▲]

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See detailThe hub: Facilitating walking meetings through a network of interactive devices
Damen, Ida; Kok, Anika; Vink, Bas et al

in DIS 2020 Companion - Companion Publication of the 2020 ACM Designing Interactive Systems Conference (2020)

Walking meetings are a promising means to improve healthy behavior at work. By providing a physically active way of working, walking meetings can reduce our sitting time. Several obstacles that limit the ... [more ▼]

Walking meetings are a promising means to improve healthy behavior at work. By providing a physically active way of working, walking meetings can reduce our sitting time. Several obstacles that limit the social acceptance and wider adoption of walking meeting practice have been highlighted in previous research. Amongst these, the difficulty to take notes or present files is a recurring concern for office workers. To address these barriers, we designed the Hub, a network of stand-up meeting stations that accommodate different work-related tasks during walking meetings. We report on two pilot user tests investigating users' experiences and ideas for improvement, and present future research steps. We discuss the usefulness and relevance of the Hub concept to overcome the obstacles associated with walking meetings. © 2020 Owner/Author. [less ▲]

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See detailIvy: A qualitative interface to reduce sedentary behavior in the office context
Menheere, Daphne; Damen, Ida; Lallemand, Carine UL et al

in DIS 2020 Companion - Companion Publication of the 2020 ACM Designing Interactive Systems Conference (2020)

This paper describes Ivy, an office chair that represents sitting time of an office worker through growing ivy strands. The longer one sits, the more strands will grow onto the chair. By means of a ... [more ▼]

This paper describes Ivy, an office chair that represents sitting time of an office worker through growing ivy strands. The longer one sits, the more strands will grow onto the chair. By means of a qualitative interface called Ivy, we illustrate a design approach that is currently underrepresented in sedentary behavior interventions. With this approach, we counter the current trend of digitalization and quantification of health interventions. Instead of graphs and numbers, Ivy uses data physicalization as a qualitative interface that represents sitting. We describe the design, the process, and future research steps of Ivy as a critical perspective on sedentary behavior interventions. We aim to spark discussion amongst designers and researchers in the field of Human-Computer Interaction to use qualitative interfaces as a promising approach to deepen the user's relationship with the targeted behavior and enrich the ability to construct meaning from the feedback. © 2020 Owner/Author. [less ▲]

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See detailIvy: Reading a critical design for sedentary behavior in the office context
Damen, Ida; Menheere, Daphne; Lallemand, Carine UL et al

in DIS 2020 Companion - Companion Publication of the 2020 ACM Designing Interactive Systems Conference (2020)

In this paper, we present and discuss Ivy, a critical artifact offering a novel design perspective on interventions that aim to reduce sedentary behavior in office workers. Ivy is an interactive office ... [more ▼]

In this paper, we present and discuss Ivy, a critical artifact offering a novel design perspective on interventions that aim to reduce sedentary behavior in office workers. Ivy is an interactive office chair that represents the amount of sitting time through growing ivy strands. Using the matrix of common argument types by Bardzell et al., we propose a structured "reading" of Ivy, as an example supporting reasoned and accessible conversations about criticality in design. Our reading of Ivy emphasized that its criticality emerges mainly from data physicalization as a new form of interactivity intended to trigger reflectiveness. The insights of this design study contribute towards a critical perspective on designing interventions to reduce sedentary time and spark discussion amongst designers and researchers in the field of Human-Computer Interaction. © 2020 Owner/Author. [less ▲]

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See detailOn the distribution of coefficients of half-integral weight modular forms and the Bruinier-Kohnen Conjecture
Inam, Ilker; Demirkol Özkaya, Zeynep; Tercan, Elif et al

E-print/Working paper (2020)

This work represents a systematic computational study of the distribution of the Fourier coefficients of cuspidal Hecke eigenforms of level Gamma_0(4) and half-integral weights. Based on substantial ... [more ▼]

This work represents a systematic computational study of the distribution of the Fourier coefficients of cuspidal Hecke eigenforms of level Gamma_0(4) and half-integral weights. Based on substantial calculations, the question is raised whether the distribution of normalised Fourier coefficients with bounded indices can be approximated by a generalised Gaussian distribution. Moreover, it is argued that the apparent symmetry around zero of the data lends strong evidence to the Bruinier-Kohnen Conjecture on the equidistribution of signs and even suggests the strengthening that signs and absolute values are distributed independently. [less ▲]

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See detailFaye: An Empathy Probe to Investigate Motivation Among Novice Runners
Menheere, D.; Lallemand, Carine UL; Funk, M. et al

in Communications in Computer and Information Science (2020), 1294

The popularity of recreational sports such as running, has increased substantially due to its low threshold to start and it is attractive for a wide range of people. However, despite the growing ... [more ▼]

The popularity of recreational sports such as running, has increased substantially due to its low threshold to start and it is attractive for a wide range of people. However, despite the growing popularity, running has a high drop-out rate due to injuries and motivational loss, especially among novice runners. To investigate factors influencing motivation among novice runners and design opportunities, we deployed an empathy probe at a women-only running event. Faye is a running shirt that reveals motivational feedback on the shirt, during the warm-up phase of the run. In this paper, we both inform on the impact of motivational feedback while warming up on running motivation and reflect on the use of an empathy probe to investigate motivational strategies among novice runners. © 2020, Springer Nature Switzerland AG. [less ▲]

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See detailThe Runner's Journey: Identifying Design Opportunities for Running Motivation Technology
Menheere, D.; Lallemand, Carine UL; Van Der Spek, E. et al

in ACM International Conference Proceeding Series (2020)

Running is a popular recreational sport, yet for many amateur runners it remains challenging to turn intentions into sustainable running behavior. Although the market offers a myriad of running-related ... [more ▼]

Running is a popular recreational sport, yet for many amateur runners it remains challenging to turn intentions into sustainable running behavior. Although the market offers a myriad of running-related devices that aim to motivate runners, these often focus on the training itself and not on overcoming the barriers experienced prior to the run. A better understanding of these barriers to running is essential to identify design opportunities for technologies supporting amateur runners. We conducted two complementary studies among participants of a women-only running event. Combining an online survey (N = 114) and a journey mapping activity (N = 13), we investigated the influence of motivational barriers and enablers in runners' rituals. Based on our findings, we created the Runner's Journey, a visual narrative highlighting actionable design opportunities for running motivation technology. We propose five design recommendations to overcome barriers among amateur runners. © 2020 ACM. [less ▲]

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See detailEstimating Long Memory in Panel Random‐Coefficient AR(1) Data
Leipus, Remigijus; Philippe, Anne; Pilipauskaite, Vytauté UL et al

in Journal of Time Series Analysis (2020), 41

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See detailVibrational properties of LaNiO3 films in the ultrathin regime
Schober, Alexander; Fowlie, Jennifer; Guennou, Mael UL et al

in APL Materials (2020)

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See detailGoal-Driven Structured Argumentation for Patient Management in a Multimorbidity Setting
Oliveira, Tiago; Dauphin, Jérémie UL; Satoh, Ken et al

in Logic and Argumentation - Third International Conference, CLAR 2020 Hangzhou, China, April 6-9, 2020, Proceedings (2020)

The formalization of multimorbidity decisions serves two purposes: to support the stakeholders in choosing which treatment to apply and to identify the reasons behind decisions. We investigate the use of ... [more ▼]

The formalization of multimorbidity decisions serves two purposes: to support the stakeholders in choosing which treatment to apply and to identify the reasons behind decisions. We investigate the use of computational argumentation to both analyse and generate decisions in multimorbidity about consistent recommendations, according to the different goals of stakeholders. Decision-making in this setting carries a complexity related with the multiple variables involved. These variables reflect the concomitant health conditions that should be considered when defining a proper therapy. However, current Clinical Decision Support Systems (CDSSs) are not equipped to deal with such a situation. They do not go beyond the straightforward application of the rules that build their knowledge base and simple interpretation of Computer Interpretable Guidelines (CIGs). We provide a computational argumentation system equipped with goal seeking mechanisms to combine independently generated recommendations, then identify and discuss its advantages over multiple-criteria decision analysis in this particular setting. [less ▲]

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See detailEye tracking correlates of acute alcohol consumption: A systematic and critical review.
Maurage, Pierre; Masson, Nicolas UL; Bollen, Zoé et al

in Neuroscience and biobehavioral reviews (2020), 108

Eye tracking has emerged as a reliable neuroscience tool indexing the eye movements' correlates of impairments resulting from alcohol-use disorders, ranging from perceptive abilities to high-level ... [more ▼]

Eye tracking has emerged as a reliable neuroscience tool indexing the eye movements' correlates of impairments resulting from alcohol-use disorders, ranging from perceptive abilities to high-level cognitive functions. This systematic review, following PRISMA guidelines, encompasses all human studies using eye tracking in participants presenting acute alcohol consumption. A literature search was conducted in PsycINFO, PubMed and Scopus, and a standardized methodological quality assessment was performed. Eye tracking studies were classified according to the processes measured (perception, attentional bias, memory, executive functions, prevention message processing). Eye tracking data centrally showed a global visuo-motor impairment (related to reduced cerebellar functioning) following alcohol intoxication, together with reduced memory and inhibitory control of eye movements. Conversely, the impact of such intoxication on alcohol-related attentional bias is still debated. The limits of this literature have been identified, leading to the emergence of new research avenues to increase the understanding of eye movements during alcohol intoxication, and to the proposal of guidelines for future research. [less ▲]

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See detailA First Approach to Argumentation Label Functions
Cramer, Marcos; Dauphin, Jérémie UL

in Computational Models of Argument - Proceedings of COMMA 2020, Perugia Italy, September 4-11, 2020 (2020)

An important approach to abstract argumentation is the labeling-based approach, in which one makes use of labelings that assign to each argument one of three labels: in, out or und. In this paper, we ... [more ▼]

An important approach to abstract argumentation is the labeling-based approach, in which one makes use of labelings that assign to each argument one of three labels: in, out or und. In this paper, we address the question, which of the twenty-seven functions from the set of labels to the set of labels can be represented by an argumentation framework. We prove that in preferred, complete and grounded semantics, eleven label functions can be represented in this way while sixteen label functions cannot be represented by any argumentation framework. We show how this analysis of label functions can be applied to prove an impossibility result: Argumentation frameworks extended with a certain kind of weak attack relation cannot be flattened to the standard Dung argumentation frameworks. [less ▲]

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See detailMicrobial Active Matter: A Topological Framework
Sengupta, Anupam UL

in Frontiers in Physics (2020), 8(184),

Topology transcends boundaries that conventionally delineate physical, biological, and engineering sciences. Our ability to mathematically describe topology, combined with recent access to precision ... [more ▼]

Topology transcends boundaries that conventionally delineate physical, biological, and engineering sciences. Our ability to mathematically describe topology, combined with recent access to precision tracking and manipulation approaches, has triggered a fresh appreciation of topological ramifications in biological systems. Microbial ecosystems, a classic example of living matter, offer a rich test bed for exploring the role of topological defects in shaping community compositions, structure, and functions spanning orders in length and time scales. Microbial activity—characteristic of such structured, out-of-equilibrium systems—triggers emergent processes that endow evolutionary and ecological benefits to microbial communities. The scene stealer of this developing cross-disciplinary field of research is the topological defects: singularities that nucleate due to spontaneous symmetry breaking within the microbial system or within the surrounding material field. The interplay of geometry, order, and topology elicit novel, if not unexpected dynamics that are at the heart of active and emergent processes in such living systems. In this short review, I have put together a summary of the key recent advances that highlight the interface of active liquid crystal physics and the physical ecology of microbes; and combined it with original data from experiments on sessile species as a case to demonstrate how this interface offers a biophysical framework that could help to decode and harness active microbial processes in true ecological settings. Topology and its functional manifestations—a crucial and well-timed topic—offer a rich opportunity for both experimentalists and theoreticians willing to take up an exciting journey across scales and disciplines. [less ▲]

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See detailExploring chemical compound space with quantum-based machine learning
O. Anatole von Lilienfeld; Klaus- Robert Müller; Tkatchenko, Alexandre UL

in Nature Reviews Chemistry (2020)

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