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See detailAnosognosia in very mild Alzheimer's disease but not in mild cognitive impairment
Kalbe, E.; Salmon, Eric ULg; Perani, D. et al

in Dementia & Geriatric Cognitive Disorders (2005), 19(5-6), 349-356

Objective: To study awareness of cognitive dysfunction in patients with very mild Alzheimer's disease (AD) and subjects with mild cognitive impairment (MCI). Methods: A complaint interview covering 13 ... [more ▼]

Objective: To study awareness of cognitive dysfunction in patients with very mild Alzheimer's disease (AD) and subjects with mild cognitive impairment (MCI). Methods: A complaint interview covering 13 cognitive domains was administered to 82 AD and 79 MCI patients and their caregivers. The patient groups were comparable according to age and education, and Mini Mental State Examination (MMSE) scores were ≥ 24 in all cases. The discrepancy between the patients' and caregivers' estimations of impairments was taken as a measure of anosognosia. Results: Self-reports of cognitive difficulties were comparable for AD and MCI patients. However, while in comparison to caregivers MCI patients reported significantly more cognitive impairment (p < 0.05), AD patients complained significantly less cognitive dysfunctions (p < 0.001). Conclusions: While most MCI patients tend to overestimate cognitive deficits when compared to their caregiver's assessment, AD patients in early stages of disease underestimate cognitive dysfunctions. Anosognosia can thus be regarded as a characteristic symptom at a stage of very mild AD (MMSE ≥ 24) but not MCI. Accordingly, medical history even in mildly affected patients should always include information from both patient and caregiver. Copyright (C) 2005 S. Karger AG, Basel. [less ▲]

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See detailL’anosognosie dans la maladie d’Alzheimer est-elle observée pour les modifications de comportement et de personnalité?
Feyers, Dorothée ULg; Bastin, Christine ULg; Jaspar, Mathieu ULg et al

in Proceedings du XIème Colloque International sur le Vieillissement Cognitif (2010)

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See detailAnother etiology for inflammatory syndrome of unknown origin.
MEDART, L.; WITHOFS, Nadia ULg; HUSTINX, Roland ULg et al

in PROCEEDINGS OF XIIIth SYMPOSIUM OF THE BELGIAN SOCIETY OF NUCLEAR MEDICINE (2007, May)

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See detailAnother Generalization of Abelian Equivalence: Binomial Complexity of Infinite Words
Rigo, Michel ULg; Salimov, Pavel ULg

in Lecture Notes in Computer Science (2013), 8079

The binomial coefficient of two words u and v is the number of times v occurs as a subsequence of u. Based on this classical notion, we introduce the m-binomial equivalence of two words refining the ... [more ▼]

The binomial coefficient of two words u and v is the number of times v occurs as a subsequence of u. Based on this classical notion, we introduce the m-binomial equivalence of two words refining the abelian equivalence. The m-binomial complexity of an infinite word x maps an integer n to the number of m-binomial equivalence classes of factors of length n occurring in x. We study the first properties of m-binomial equivalence. We compute the m-binomial complexity of the Sturmian words and of the Thue-Morse word. We also mention the possible avoidance of 2-binomial squares. [less ▲]

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See detailAnother Generalization of Abelian Equivalence: Binomial Complexity of Infinite Words (long version)
Rigo, Michel ULg; Salimov, Pavel

in Theoretical Computer Science (2015), 601

The binomial coefficient of two words $u$ and $v$ is the number of times $v$ occurs as a subsequence of $u$. Based on this classical notion, we introduce the $m$-binomial equivalence of two words refining ... [more ▼]

The binomial coefficient of two words $u$ and $v$ is the number of times $v$ occurs as a subsequence of $u$. Based on this classical notion, we introduce the $m$-binomial equivalence of two words refining the abelian equivalence. Two words $x$ and $y$ are $m$-binomially equivalent, if, for all words $v$ of length at most $m$, the binomial coefficients of $x$ and $v$ and respectively, $y$ and $v$ are equal. The $m$-binomial complexity of an infinite word $x$ maps an integer $n$ to the number of $m$-binomial equivalence classes of factors of length $n$ occurring in $x$. We study the first properties of $m$-binomial equivalence. We compute the $m$-binomial complexity of two classes of words: Sturmian words and (pure) morphic words that are fixed points of Parikh-constant morphisms like the Thue--Morse word, i.e., images by the morphism of all the letters have the same Parikh vector. We prove that the frequency of each symbol of an infinite recurrent word with bounded $2$-binomial complexity is rational. [less ▲]

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See detailAnother kind of 'BOLD Response': answering multiple-choice questions via online decoded single-trial brain signals.
Sorger, Bettina; Dahmen, Brigitte; Reithler, Joel et al

in Progress in Brain Research (2009), 177

The term 'locked-in'syndrome (LIS) describes a medical condition in which persons concerned are severely paralyzed and at the same time fully conscious and awake. The resulting anarthria makes it ... [more ▼]

The term 'locked-in'syndrome (LIS) describes a medical condition in which persons concerned are severely paralyzed and at the same time fully conscious and awake. The resulting anarthria makes it impossible for these patients to naturally communicate, which results in diagnostic as well as serious practical and ethical problems. Therefore, developing alternative, muscle-independent communication means is of prime importance. Such communication means can be realized via brain-computer interfaces (BCIs) circumventing the muscular system by using brain signals associated with preserved cognitive, sensory, and emotional brain functions. Primarily, BCIs based on electrophysiological measures have been developed and applied with remarkable success. Recently, also blood flow-based neuroimaging methods, such as functional magnetic resonance imaging (fMRI) and functional near-infrared spectroscopy (fNIRS), have been explored in this context. After reviewing recent literature on the development of especially hemodynamically based BCIs, we introduce a highly reliable and easy-to-apply communication procedure that enables untrained participants to motor-independently and relatively effortlessly answer multiple-choice questions based on intentionally generated single-trial fMRI signals that can be decoded online. Our technique takes advantage of the participants' capability to voluntarily influence certain spatio-temporal aspects of the blood oxygenation level-dependent (BOLD) signal: source location (by using different mental tasks), signal onset and offset. We show that healthy participants are capable of hemodynamically encoding at least four distinct information units on a single-trial level without extensive pretraining and with little effort. Moreover, real-time data analysis based on simple multi-filter correlations allows for automated answer decoding with a high accuracy (94.9%) demonstrating the robustness of the presented method. Following our 'proof of concept', the next step will involve clinical trials with LIS patients, undertaken in close collaboration with their relatives and caretakers in order to elaborate individually tailored communication protocols. As our procedure can be easily transferred to MRI-equipped clinical sites, it may constitute a simple and effective possibility for online detection of residual consciousness and for LIS patients to communicate basic thoughts and needs in case no other alternative communication means are available (yet)--especially in the acute phase of the LIS. Future research may focus on further increasing the efficiency and accuracy of fMRI-based BCIs by implementing sophisticated data analysis methods (e.g., multivariate and independent component analysis) and neurofeedback training techniques. Finally, the presented BCI approach could be transferred to portable fNIRS systems as only this would enable hemodynamically based communication in daily life situations. [less ▲]

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See detailAnother look at the empirical research on bankruptcy
Van Caillie, Didier ULg

Scientific conference (2000, May)

This conference proposes a state-of-the-art of the current empirical research devoted to business failure prediction and discusses some avenues for future research.

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See detailAnother reason why simple discretizations of rotated diffusion operators cause problems in ocean models: Comments on "Isoneutral diffusion in a z-coordinate ocean model"
Beckers, Jean-Marie ULg; Burchard, H.; Campin, J. M. et al

in Journal of Physical Oceanography (1998), 28(7), 1552-1559

A method to improve the behavior of the numerical discretization of a rotated diffusion operator such as, for example, the isopycnal diffusion parameterization used in large-scale ocean models based on ... [more ▼]

A method to improve the behavior of the numerical discretization of a rotated diffusion operator such as, for example, the isopycnal diffusion parameterization used in large-scale ocean models based on the so-called z-coordinate system is presented. The authors then focus exclusively on the dynamically passive tracers and analyze some different approaches to the numerical discretization. Monotonic schemes are designed but are found to be rather complex, while simpler, linear schemes are shown to produce unphysical undershooting and vershooting. It is suggested that the choice of an appropriate discretization method depends on the importance of the rotated diffusion in a given simulation, whether the field to be diffused is dynamically active or not. [less ▲]

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See detailAnother way of thinking about ADHD: The predictive role of early attachment deprivation in adolescents’ level of symptoms.
Roskam, Isabelle; Stievenart, Marie ULg; Tessier, Rejan et al

in Social Psychiatry & Psychiatric Epidemiology (2014), 49(1),

Attention deficit and hyperactivity disorder (ADHD) is one of the most frequent disorders in childhood and adolescence. Both neurocognitive and environmental factors have been related to ADHD. The current ... [more ▼]

Attention deficit and hyperactivity disorder (ADHD) is one of the most frequent disorders in childhood and adolescence. Both neurocognitive and environmental factors have been related to ADHD. The current study contributes to the documentation of the predictive relation between early attachment deprivation and ADHD. Data were collected from 641 adopted adolescents (53.2 % girls) aged 11–16 years in five countries, using the DSM oriented scale for ADHD of the Child Behavior Checklist (CBCL) (Achenbach and Rescorla, Manual for the ASEBA school-age forms and profiles. University of Vermont, Research Center for Children, Youth and Families, Burlington, 2001). The influence of attachment deprivation on ADHD symptoms was initially tested taking into consideration several key variables that have been reported as influencing ADHD at the adoptee level (age, gender, length of time in the adoptive family, parents’ educational level and marital status), and at the level of the country of origin and country of adoption (poverty, quality of health services and values). The analyses were computed using the multilevel modeling technique. The results showed that an increase in the level of ADHD symptoms was predicted by the duration of exposure to early attachment deprivation, estimated from the age of adoption, after controlling for the influence of adoptee and country variables. The effect of the age of adoption was also demonstrated to be specific to the level of ADHD symptoms in comparison to both the externalizing and internalizing behavior scales of the CBCL. Deprivation of stable and sensitive care in infancy may have long-lasting consequences for children’s development. [less ▲]

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See detailANP et BNP : marqueurs biologiques de l’insuffisance cardiaque
Frippiat, Thibault ULg; Vélu, Céline

Learning material (2006)

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See detailAnsiedad y rendimiento academico
Egido, A.; Born, Michel ULg; Sineiro, Garcia

in Revista Galega de Psicopedagogia (1994), 9(6), 157-168

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See detailanswer to a question from the general reporter in session B2, question 1.6
Lilien, Jean-Louis ULg

Conference (2012, August)

Technology to forecast up to 2 days ahead the ampacity of power lines is now mature owing to european project TWENTIES

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See detailAnswers to frequently asked questions concerning hepatitis C
Gerard, Christiane ULg; Delwaide, Jean ULg

in Decker, R.; Troonen, H. (Eds.) Hepatitis C 1997: Essays and Expert Opinions on its Natural History, Epidemiology, Diagnosis and Therapy (1997)

Supporting a referral center in a university hospital, our staff is regularly exposed to amultitude of questions concerning hepatitis C from a great variety of individuals including laboratorians, general ... [more ▼]

Supporting a referral center in a university hospital, our staff is regularly exposed to amultitude of questions concerning hepatitis C from a great variety of individuals including laboratorians, general practitioners and their patients, nurses, gastroenterologists, and affiliated health care professionals. The following reflects our collective experience in answering the most frequently posed questions. [less ▲]

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See detailAn Ant Colony System for Responsive Dynamic Vehicle Routing
Schyns, Michael ULg

in European Journal of Operational Research (2015), 245(3), 704-718

We present an algorithm based on an Ant Colony System to deal with a broad range of Dynamic Capacitated Vehicle Routing Problems with Time Windows, (partial) Split Delivery and Heterogeneous fleets ... [more ▼]

We present an algorithm based on an Ant Colony System to deal with a broad range of Dynamic Capacitated Vehicle Routing Problems with Time Windows, (partial) Split Delivery and Heterogeneous fleets (DVRPTWSD). Besides the traditional distance criterion, we address the important case of responsiveness. Responsiveness is defined here as completing a delivery as soon as possible, within the time window, such that the client or the truck may restart its activities. This is crucial for many production or service activities in different fields: express parcel deliveries, taxi services, Just in Time production, express repair services, medical care, petrol station replenishment, etc. We develop an interactive web-based solution to allow dispatchers to take new information into account in real-time. The algorithm and its parametrization were tested on real and artificial instances. We first illustrate our approach with a problem submitted by Liege Airport, the 8th biggest cargo airport in Europe. The goal is to develop a decision system to optimize the journey of the refueling trucks. We then consider some classical VRP benchmarks with extensions for more complex problems. [less ▲]

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See detail"Ant'Phipoda", the reference centre for Antarctic crustaceans: A tool for developing and managing Antarctic marine biodiversity information
De Broyer, Claude; Duchesne, Paul-André; Vander Linden, Charles et al

in Polish Archives for Hydrobiology (2000), 47

Detailed reference viewed: 20 (2 ULg)