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See detailVisualizing Visions: Re-viewing the seventeenth-century genre of constcamer paintings
Koeleman, Floor Anna UL

Doctoral thesis (2021)

Constcamer paintings or pictures of collections were created almost exclusively in Antwerp, and to a lesser extent in Brussels, in the seventeenth century. Until now, no attempt had been made to collect ... [more ▼]

Constcamer paintings or pictures of collections were created almost exclusively in Antwerp, and to a lesser extent in Brussels, in the seventeenth century. Until now, no attempt had been made to collect all known examples, partly because of the contemporary distribution of such works across collections throughout the Western world. Another difficulty in studying constcamer paintings is the great complexity of the rich variety of subjects, objects, and concepts on display in the images that combine many disciplines separated today. Advances in the field of computer science have made it possible to systematically collect, archive, and analyze artworks and associated information on a large scale. My digital approach to the genre aimed to determine what a constcamer painting is, in terms of form, content, and meaning. In addition to looking at pictorial features and cognitively identifying what we see, contextualization played a key role in achieving understanding. Pictorial, historical, social, cultural, and intellectual contexts served as the framework for interpretation. Special attention has been paid to the interplays between collecting and recollecting, art and science, and physical and metaphysical vision. This thesis argues that pictures of collections primarily lay claim to the active intellect to generate insights by uncovering the multitude of meanings embedded in the seventeenth-century genre. The examination of constcamer paintings through a dataset led to enhanced perception and highlighted the prominence of visuality in the transmission and acquisition of knowledge, both then and now. [less ▲]

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See detailExcess Control Rights, Multiple Large Shareholders, and Corporate Cash Holding Behavior
Benkraiem, Ramzi; Boubaker, Sabri; Derouiche, Imen UL et al

Scientific Conference (2021, October 01)

This article examines the effects of excess control rights of the controlling shareholder and the presence of multiple large shareholders on the propensity of firms to save cash out of cash flow, i.e. the ... [more ▼]

This article examines the effects of excess control rights of the controlling shareholder and the presence of multiple large shareholders on the propensity of firms to save cash out of cash flow, i.e. the sensitivity of cash to cash flow. Using a data set covering 6,430 firm–year observations of 634 French listed firms, the evidence shows that firms have high cash flow sensitivity of cash when the controlling shareholder‘s control rights exceed its cash-flow ownership. However, this sensitivity decreases with the contestability of the controlling owner‘s power. Taken together, these findings provide empirical support to the argument that firms experiencing excess control rights save more cash out of cash flow due to their considerable financial constraints that are lowered in the presence of high control contestability. [less ▲]

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See detailPresenter: Migration and Border Research at C2DH
Venken, Machteld UL

Presentation (2021, October 01)

Detailed reference viewed: 13 (1 UL)
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See detailFrom SLAM to Situational Awareness: Challenges and Survey
Bavle, Hriday UL; Sanchez Lopez, Jose Luis UL; Schmidt F, Eduardo et al

E-print/Working paper (2021)

Detailed reference viewed: 65 (1 UL)
See detailL'influence des leaders d'opinion. Un modèle pour l'étude des usages et de la réception des réseaux socionumériques. Préface de Rémy Rieffel.
Lukasik, Stéphanie UL; Rieffel, Remy

Book published by L'Harmattan (2021)

Les phénomènes des « influenceurs » et des « réseaux sociaux » soulèvent de nouvelles questions de société, notamment celles des usages et de la réception de l’information, de la diffusion de l’opinion et ... [more ▼]

Les phénomènes des « influenceurs » et des « réseaux sociaux » soulèvent de nouvelles questions de société, notamment celles des usages et de la réception de l’information, de la diffusion de l’opinion et de l’influence. Cet ouvrage, issu d’une recherche scientifique, est une invitation à réfléchir différemment sur les leaders d’opinion, les influenceurs et les réseaux sociaux en revenant au fondement de leurs fonctionnements. En prenant soin de revenir aux textes originels du modèle de l’école de Columbia, qui a forgé la figure du leader d’opinion et la théorie de l’influence personnelle, le livre examine les situations d’influence d’opinion à l’oeuvre dans les activités de circulation et de réception de l’information. Ce que les « gens de la vie quotidienne » choisissent et font des contenus médiatiques sur les réseaux socionumériques. Un livre qui éclaire les enjeux et les ressorts très actuels de l’influence socionumérique. [less ▲]

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See detailA Formalisation of Abstract Argumentation in Higher-Order Logic
Steen, Alexander UL; Fuenmayor Pelaez, David UL

E-print/Working paper (2021)

We present an approach for representing abstract argumentation frameworks based on an encoding into classical higher-order logic. This provides a uniform framework for computer-assisted assessment of ... [more ▼]

We present an approach for representing abstract argumentation frameworks based on an encoding into classical higher-order logic. This provides a uniform framework for computer-assisted assessment of abstract argumentation frameworks using interactive and automated reasoning tools. This enables the formal analysis and verification of meta-theoretical properties as well as the flexible generation of extensions and labellings with respect to well-known argumentation semantics. [less ▲]

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See detailRequirements And Threat Models of Adversarial Attacks and Robustness of Chest X-ray classification
Ghamizi, Salah UL; Cordy, Maxime UL; Papadakis, Mike UL et al

E-print/Working paper (2021)

Vulnerability to adversarial attacks is a well-known weakness of Deep Neural Networks. While most of the studies focus on natural images with standardized benchmarks like ImageNet and CIFAR, little ... [more ▼]

Vulnerability to adversarial attacks is a well-known weakness of Deep Neural Networks. While most of the studies focus on natural images with standardized benchmarks like ImageNet and CIFAR, little research has considered real world applications, in particular in the medical domain. Our research shows that, contrary to previous claims, robustness of chest x-ray classification is much harder to evaluate and leads to very different assessments based on the dataset, the architecture and robustness metric. We argue that previous studies did not take into account the peculiarity of medical diagnosis, like the co-occurrence of diseases, the disagreement of labellers (domain experts), the threat model of the attacks and the risk implications for each successful attack. In this paper, we discuss the methodological foundations, review the pitfalls and best practices, and suggest new methodological considerations for evaluating the robustness of chest xray classification models. Our evaluation on 3 datasets, 7 models, and 18 diseases is the largest evaluation of robustness of chest x-ray classification models. We believe our findings will provide reliable guidelines for realistic evaluation and improvement of the robustness of machine learning models for medical diagnosis. [less ▲]

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See detailLabor Market Effects of Technology Shocks biased Toward the Traded Sector
Bertinelli, Luisito UL; Cardi; Restout

E-print/Working paper (2021)

Motivated by recent evidence pointing at an increasing contribution of asymmetric shocks across sectors to economic fluctuations, we explore the labor market effects of technology shocks biased toward the ... [more ▼]

Motivated by recent evidence pointing at an increasing contribution of asymmetric shocks across sectors to economic fluctuations, we explore the labor market effects of technology shocks biased toward the traded sector. Our VAR evidence for seventeen OECD countries reveals that the non-traded sector alone drives the increase in total hours worked following a technology shock that increases permanently traded relative to non-traded TFP. The shock generates a reallocation of labor toward the non-traded sector which contributes to 35% on average of the rise in non-traded hours worked. Both labor reallocation and variations in labor income shares are found empirically connected with factor-biased technological change. Our quantitative analysis shows that a two-sector open economy model with flexible prices can reproduce the labor market effects we document empirically once we allow for imperfect mobility of labor, gross substitutability between home- and foreign-produced traded goods, and factor-biased technological change. When calibrating the model to country-specific data, its ability to account for the cross-country reallocation and redistributive effects we estimate increases once we let factor-biased technological change vary between sectors and across countries. [less ▲]

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See detailExplicar los impactos de la globalización en las zonas transfronterizas a través de la calidad de la democracia. Un marco interregional comparativo
Koff, Harlan UL; Mejía Idarraga, Santiago

in Estudios Políticos (2021), 62

Globalisation has significantly affected the ability of States to govern flows. Important questions which have recently emerged in international relations ask: how has globalisation affected border ... [more ▼]

Globalisation has significantly affected the ability of States to govern flows. Important questions which have recently emerged in international relations ask: how has globalisation affected border regions and what explains these impacts? Employing a comparative, cross-regional research design, this article proposes two originalresponses to these questions: first, it questions whether border communities benefit or suffer from globalization and, in doing so, it addresses the impacts of globalization on border communities. Second, an attempt is made to explain these impacts by studying the democratic quality of border integration processes. Thus, globalization is examined as a system in which the benefits are distributed or concentrated according to the quality of the integration processes. [less ▲]

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See detailAnalysis of the geometrical imperfections of a dry-stacked masonry block based on Miscanthus
Pereira Dias, Patrick; Jesuino Kammer, Vanessa; Waldmann, Daniele UL

in Construction and Building Materials (2021)

Detailed reference viewed: 76 (1 UL)
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See detailLeveraging Temporal Information for 3D Trajectory Estimation of Space Objects
Mohamed Ali, Mohamed Adel UL; Ortiz Del Castillo, Miguel UL; Al Ismaeil, Kassem UL et al

in Proceedings of the IEEE/CVF International Conference on Computer Vision (ICCV) Workshops (2021, October)

Detailed reference viewed: 73 (24 UL)
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See detailIntelligent Autonomous Agents and Trust in Virtual Reality
Sun, Ningyuan UL; Botev, Jean UL

in Computers in Human Behavior Reports (2021)

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See detailChronique de droit des marchés financiers
Conac, Pierre-Henri UL

in Revue des Sociétés (2021)

Detailed reference viewed: 39 (0 UL)
Peer Reviewed
See detailFlight to Safety and Retail Investor Behavior
Lehnert, Thorsten UL

Scientific Conference (2021, October)

Detailed reference viewed: 42 (3 UL)
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See detailThe Moderating Role of Attention Control in the Relationship Between Pain Catastrophizing and Negatively-Biased Pain Memories in Youth With Chronic Pain
Wauters, Aline; Noel, Melanie; van Ryckeghem, Dimitri UL et al

in Journal of Pain (2021), 22(10), 1303-1314

The present study examined the role of attention control in understanding the development of negatively-biased pain memories as well as its moderating role in the relationship between pain catastrophizing ... [more ▼]

The present study examined the role of attention control in understanding the development of negatively-biased pain memories as well as its moderating role in the relationship between pain catastrophizing and negatively-biased pain memories. Youth with chronic pain (N = 105) performed a cold pressor task (CPT) and completed self-report measures of state/trait pain catastrophizing and attention control, with the latter comprising both attention focusing and attention shifting. Two weeks after the CPT, youth's pain-related memories were elicited via telephone allowing to compute pain and anxiety memory bias indices (ie, recalling pain intensity or pain-related anxiety, respectively, as higher than initially reported). Results indicated no main effects of attention control and pain catastrophizing on pain memories. However, both components of attention control (ie, attention focusing and attention shifting) moderated the impact of pain catastrophizing on youth's memory bias, with opposite interaction effects. Specifically, whereas high levels of attention shifting buffered the influence of high pain catastrophizing on the development of pain memory bias, high levels of attention focusing strengthened the influence of high pain catastrophizing on the development of anxiety memory bias. Interaction effects were confined to trait catastrophizing (ie, not state catastrophizing). Theoretical and clinical implications are discussed. PERSPECTIVE: This article investigates the role of attention control in the development of negatively-biased pain memories in children with chronic pain. Findings underscore the importance of targeting differential components of attention control and can inform intervention efforts to minimize the development of negatively biased pain memories in youth with chronic pain. [less ▲]

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See detailCan perioperative psychological interventions decrease the risk of post-surgical pain and disability? A systematic review and meta-analysis of randomized controlled trials
Nadinda, Putu G; van Ryckeghem, Dimitri UL; Peters, Madelon L

in Pain (2021)

Many patients experience pain after surgery. Psychological factors such as emotion and cognition are shown to be associated with the development of acute and chronic post-surgical pain. Therefore, the ... [more ▼]

Many patients experience pain after surgery. Psychological factors such as emotion and cognition are shown to be associated with the development of acute and chronic post-surgical pain. Therefore, the question arises whether targeting these psychological factors can reduce negative post-surgical outcomes. The aim of the current review is to investigate the efficacy of perioperative psychological interventions in reducing (sub)acute and chronic post-surgical pain and disability in adults. Randomized controlled trials were identified through four databases (Web of Science, PsycINFO, PubMed, and CINAHL). The outcomes of interest were (sub)acute (i.e., within 3 months after surgery) and chronic (> 3 months after surgery) pain and disability. After screening, 21 studies were included in the final analyses. It was found that psychological interventions significantly reduced (sub)acute pain (d = -0.26, 95% CI [-0.48 to -0.04]), and disability (d = -0.43, 95% CI [-0.84 to -0.03]), as well as chronic post-surgical pain (d = -0.33, 95% CI [-0.61 to -0.06]), and disability (d = -0.43, 95% CI [-0.68 to -0.18]). Additionally, interventions delivered after surgery and interventions delivered by a psychologist tended to be more effective than interventions delivered before surgery and interventions delivered by another healthcare provider. Furthermore, the current review points to the need for more research to determine which specific type of intervention may be most beneficial for surgical patients. Finally, the current review identified that research in this domain has concerns regarding bias in missing outcomes data due to withdrawal and drop out. [less ▲]

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See detailLaurent Menager (1835-1902). Kritische Gesamtausgabe, Abteilung I: Vokalwerke, Band 4, Weltliche Vokalwerke
Anders, Ursula UL; Reuter, Caroline; Sagrillo, Damien François UL et al

Book published by Merseburger (2021)

Detailed reference viewed: 50 (6 UL)