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Peer Reviewed
See detailA criterion for CV(X) to be quasinormable
Bastin, Françoise ULg; Ernst, Bruno

in Results in Mathematics (1988), 14(3-4), 223-230

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See detailCriterion-related validity of the revised Belgian Nursing Minimium Data Set (B-NMDS) throught the actual B-NMDS
THONON, Olivier ULg; VAN BOVEN, Caroline ULg; CODOGNOTTO, Jean ULg et al

in OUD, Nico; SERMEUS, Walter; EHNFORS, Margareta (Eds.) Proceedings of the fifth biennial European Conference of the Association for Common European Nursing Diagnoses, Interventions and Outcomes (2005, April)

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See detailLa crítica y la traducción como versiones de lo foráneo
Willson, Patricia ULg

in Freixa, Albert; López Guix, Juan Gabriel (Eds.) Actas del II Coloquio Internacional «Escrituras de la Traducción Hispánica», 5-7 noviembre de 2010 (2011, February)

Based on Julio Cortázar’s 1951 translation of Pierre Drieu la Rochelle’s "Récit secret", a text included by the latter in his journals, this lecture discusses the relationships of literary translation and ... [more ▼]

Based on Julio Cortázar’s 1951 translation of Pierre Drieu la Rochelle’s "Récit secret", a text included by the latter in his journals, this lecture discusses the relationships of literary translation and criticism. The translation is examined in comparison to the fiction and criticism of the 40s and 50s in Cortázar, and with certain works by Drieu. The source of aesthetic and ideological disagreement between both writers –surrealism– is used to establish the differences and homologies between the critical discourse of Cortázar, and his work as translator. [less ▲]

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See detailCritical analysis and alternative processing of Type Ia supernovae data
Hauret, Clémentine ULg; Magain, Pierre ULg

E-print/Working paper (2015)

Context: Type Ia Supernovae (SNIa) observations in the late 90’s were the first hints for an accelerated expansion of our Universe. Today, hundreds of objects have been observed and seem to confirm the ... [more ▼]

Context: Type Ia Supernovae (SNIa) observations in the late 90’s were the first hints for an accelerated expansion of our Universe. Today, hundreds of objects have been observed and seem to confirm the flat LambdaCDM model as the cosmological model best representing our Universe. Aims: We study the SNIa observations gathered in the Union 2.1 and in the JLA compilations. By analyzing correlations and different ways of comparing cosmological models to the data, we bring to light some statistical biases, due to the current way of computing SNIa luminosity corrections for light-curve shape, color and host galaxy mass. Methods: We suggest an alternative, safer and model-independent methodology to calibrate the luminosity corrections, using only nearby SNIa. Results: With our recalibrated data, biases are strongly reduced. Moreover, open cosmological models are shown to be favoured over flat models (Omega_m,0 = 0.26+-0.08, Omega_Lambda,0 = 0.66+-0.12 for the SCP compilation and Omega_m,0 = 0.20+-0.08, Omega_Lambda,0 = 0.56+- 0.13 for the JLA one). Conclusions: The usual method to process SNIa data, i.e. simultaneously determining the parameters of the cosmological model and of the luminosity corrections on the full sample, is prone to bias the data in favour of the assumed cosmology, currently a flat LambdaCDM model, as well as to bias the cosmological parameters of the assumed model. [less ▲]

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See detailCritical analysis and alternative treatment of Type Ia Supernovae data
Hauret, Clémentine ULg

Conference (2015, May 20)

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See detailCritical analysis of several analytical method validation strategies in the framework of the fit for purpose concept.
Rozet, Eric ULg; Bouabidi, A.; Fillet, Marianne ULg et al

in Journal of Chromatography. A (2010), 1217

Analytical method validation is a mandatory step at the end of the development in all analytical laboratories. It is a highly regulated step of the life cycle of a quantitative analytical method. However ... [more ▼]

Analytical method validation is a mandatory step at the end of the development in all analytical laboratories. It is a highly regulated step of the life cycle of a quantitative analytical method. However, even if some documents have been published there is a lack of clear guidance for the methodology to follow to adequately decide when a method can be considered as valid. This situation has led to the availability of several methodological approaches and it is therefore the responsibility of the analyst to choose the best one. The classical decision processes encountered during method validation evaluation are compared, namely the descriptive, difference and equivalence approaches. Furthermore a validation approach using accuracy profile computed by means of beta-expectation tolerance interval and total measurement error is also available. In the present paper all of these different validation approaches were applied to the validation of two analytical methods. The evaluation of the producer and consumer risks by Monte Carlo simulations were also made in order to compare the appropriateness of these various approaches. The classical methodologies give rise to inadequate and contradictory conclusions which do not allow them to answer adequately the objective of method validation, i.e. to give enough guarantees that each of the future results that will be generated by the method during routine use will be close enough to the true value. It is found that the validation methodology which gives the most guarantees with regards to the reliability or adequacy of the decision to consider a method as valid is the one based on the use of the accuracy profile. [less ▲]

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See detailCritical analysis of the "anaerobic threshold" during exercise at constant workloads.
Scheen, André ULg; Juchmes, J.; Cession-Fossion, A.

in European Journal of Applied Physiology and Occupational Physiology (1981), 46(4), 367-77

The method described by Wasserman for anaerobic threshold (AT) determination, based on the recording of ventilatory parameters, was supported by the simultaneous appearance of hyperlactacidemia and ... [more ▼]

The method described by Wasserman for anaerobic threshold (AT) determination, based on the recording of ventilatory parameters, was supported by the simultaneous appearance of hyperlactacidemia and hyperventilation during a standardized incremental work test. Our study aimed at testing the AT in another profile of exercise, viz., during exercises at constant workloads. A homogenous population of 66 healthy subjects performed on a treadmill a total of 100 exercises of 20 min duration at constant workloads (43, 48, 52, 57, 63, and 71% VO2 max). The VO2, V, and venous plasma lactic acid (LA) were determined every minute. LA showed an initial transient increase at 43% VO2 max and a steady-state elevated level above 48% VO2 max. In contrast, the hyperventilation threshold (HVT) was only observed above 57% VO2 max, simultaneously with a delayed steady-state VO2 and with a sustained increase of lactate until the end of exercise. The meaning of the simultaneity of these three events must still be studied. However, the dissociation between both early and steady-state lactate thresholds and HVT is not in keeping with the concept of AT. In these conditions, there is no evidence that HVT necessarily represents an AT, viz., a critical intensity of exercise inducing an insufficient oxygen delivery to the muscles. This conclusion does not imply that the measurement of HVT should be rejected as an empirical test of physical fitness. [less ▲]

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See detailA critical analysis of the efficacy of estrogens on spinal and non-spinal fracture reduction
REGINSTER, Jean-Yves ULg; Richy, Florent; Bruyère, Olivier ULg

in Reproduction Humaine et Hormones (2004), XVII(5), 419-423

During more than 20 years, estrogens replacement therapy (ERT) has been consistently regarded as the first choice for prevention of trabecular and cortical bone loss in postmenopausal women. However ... [more ▼]

During more than 20 years, estrogens replacement therapy (ERT) has been consistently regarded as the first choice for prevention of trabecular and cortical bone loss in postmenopausal women. However, there are more doubts upon the unequivocal demonstration of the anti-fracture efficacy of ERT, at the spine and hip. Controlled clinical trials and systematic reviews were retrieved, using Medline 1970-2002 and EMBASE 1980-2002. There is a convergent body of evidence that estrogens could significantly reduce the risk of vertebral and non-vertebral fractures, providing this treatment is started early after the menopause and pursued indefinitely. In the recent perspective of the published studies, reevaluating the non-skeletal benefits and harms of ERT in post-menopausal women, other chemical entities might be better options to be used for the specific purpose of preventing or treating post-menopausal osteoporosis. [less ▲]

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See detailA critical analysis of the efficacy of estrogens on spinal and non-spinal fracture reduction
Reginster, Jean-Yves ULg; Richy, Florent; Bruyère, Olivier ULg

in Osteoporosis International (2005, March), 16(Suppl.3), 47

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See detailCritical analysis of the paramagnetic to ferromagnetic phase transition in Pr0.55K0.05Sr0.4MnO3
Thaljaoui, R.; Pękała, M.; Fagnard, Jean-François ULg et al

in Physica B: Condensed Matter (2016), 482

The critical properties of monovalent doped manganite Pr0.55K0.05Sr0.4MnO3 around the paramagnetic to ferromagnetic phase transition were investigated through various methods: the modified Arrott plots ... [more ▼]

The critical properties of monovalent doped manganite Pr0.55K0.05Sr0.4MnO3 around the paramagnetic to ferromagnetic phase transition were investigated through various methods: the modified Arrott plots (MAP), the Kouvel-Fisher method and the critical isotherm analysis. Data obtained near Tc were examined in the framework of the mean field theory, the 3D–Heisenberg model, the 3D–Ising model, and tricritical mean field. The deduced critical exponents values obtained using MAP method were found to be β = 0.44(4) with TC ~ 303 K and γ = 1.04(1) with TC ~ 302 K. Kouvel-Fisher method supplies the critical values to be β = 0.41(2) with TC ~ 302 K and γ = 1.09(1) with TC ~ 302 K. The obtained critical parameters show a tendency towards the mean-field behavior, suggesting the existence of long-range ferromagnetic order in the compound studied. The exponent δ deduced separately from isotherm analysis at T= 303 K was found to obey to the Widom scaling relation δ = 1+ γ/ β. The reliability of obtained exponents was confirmed by using the universal scaling hypothesis. The itinerant character of ferromagnetism in the present system was also tested by using Rhodes-Wohlfarth’s criterion. [less ▲]

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See detailCritical analysis of the WORLDNET freight flow matrices
Chevalier, Simon; Limbourg, Sabine ULg

E-print/Working paper (2010)

The growing trade between Europe and the rest of the world and the enlargement of the European Union has led the European Commission’s Directorate-General for Energy and Transport to fund Worldnet – ... [more ▼]

The growing trade between Europe and the rest of the world and the enlargement of the European Union has led the European Commission’s Directorate-General for Energy and Transport to fund Worldnet – Worldwide Cargo Flows – within the Framework 6 research project under the Scientific Support to Policies initiative. The main outputs have been an extended freight origin-destination database for the year 2005, extended road and rail networks, and new maritime and air-cargo networks. Moreover, these outputs were developed according to TRANSTOOLS (Tools for TRansport forecasting ANd Scenario testing) specifications. Due to the magnitude of the project and to the consequences that its results could generate in transportation planning at European level, this study assesses the validity of the freight origin-destination matrix. Our analysis indicates multiple problem cases, inconsistencies and aberrations. [less ▲]

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See detailCritical and Political Stakes of a Philosophy of Norms, Part II : Theory of Norms and Social Criticism
Caeymaex, Florence ULg

in de Beistegui, Miguel; Bianco, Giuseppe; Gracieuse, Marjorie (Eds.) The Care of Life : Transdisciplinary perspectives in Bioethics and Biopolitics (2015)

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See detailA Critical Appraisal of Carbon Monoxide Uptake Measurements for the Follow-up of Experimental Respiratory Diseases in the Laboratory Mouse
Habyarimana, Jean Adélite; Flandre, Thierry; Faisca, Pedro et al

in Scandinavian Journal of Laboratory Animal Science (2009), 36(3), 229-240

Adaptation of double-chamber plethysmography to the laboratory mouse was recently proven to yield stable and reliable pulmonary function values. This approach to investigation of the respiratory function ... [more ▼]

Adaptation of double-chamber plethysmography to the laboratory mouse was recently proven to yield stable and reliable pulmonary function values. This approach to investigation of the respiratory function in mice owes its success to its decisive advantages in terms of non-invasiveness, practical implementation and generation of quantitative flow/volume measurements and nondisputed airway resistance calculation. When implemented to screen the resistance/susceptibility patterns to pathogens displayed by a panel of mouse inbred strains, the resistance value obtained was indeed able to detect tracheobronchic inflammation and to scale its severity. However, extension of the pathological process to most distal parts of the respiratory system did not translate in further alteration of resistance, suggesting that its value rather reflects constraints acting on airflow in the airways than pathologic processes located in the more distal parts of the lungs. In this context, we hypothesized that a more exhaustive functional picture could be obtained, still noninvasively, by combining double-chamber plethysmography with carbon monoxide (CO) uptake measurements. The feasibility of CO-uptake measurements in mice was demonstrated and the conditions under which reproducibility can be maximized were defined. Differences linked to strain, somatic growth, and sex were examined and discussed, and reference values in growing male and female conscious and healthy BALB/cBy, SJL/J, C57BL/6, C3H/HeN, DBA/2 and 129/Sv mice were given. Finally, double-chamber plethysmography and CO-uptake values were proven to be exquisitely complementary in assessing and dissecting the functional impact of Sendai virus pneumonia in the laboratory mouse. [less ▲]

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Peer Reviewed
See detailCritical appraisal of pressure-frequency relation for estimation of diaphragm function in conscious calves
Desmecht, Daniel ULg; Linden, Annick ULg; Lekeux, Pierre ULg

in American Journal of Veterinary Research (1994), 55(12), 1638-1646

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See detailCritical Aspects of Dendrochronology
Hoffsummer, Patrick ULg

in Hoffsummer, Patrick (Ed.) Roof Frames from the 11the to the 19th Century: Typology and Developmen in Northern France and in Belgium: Analysis of CRMH Documentation (2009)

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See detailA Critical Assessment of Approaches to Outpatient Monitoring.
Appelboom, Geoff; Sussman, Eric S.; Raphael, Pierre et al

in Current medical research and opinion (2014)

Abstract N/A.

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See detailCritical assessment of chick quality measurements as an indicator of posthatch performance.
Willemsen, H.; Everaert, Nadia ULg; Witters, A. et al

in Poultry science (2008), 87(11), 2358-66

For hatcheries, not only is it important to have a high level of hatchability, but the quality of the chicks provided also has to be good, because broiler farmers are looking for chicks with a high growth ... [more ▼]

For hatcheries, not only is it important to have a high level of hatchability, but the quality of the chicks provided also has to be good, because broiler farmers are looking for chicks with a high growth potential, resulting in a greater slaughter yield at the end of the rearing period. However, chick quality has proven to be a difficult and subjective matter to define. Therefore, the aim of this study was to investigate the predictive value of different chick quality measurements for BW at slaughter age. Body weight, chick length, shank length, and toe length measurements as well as Tona score determination were performed on 1-d-old chicks and were linked to posthatch performance parameters. Different breeder lines (Cobb and Ross) and breeder ages (39, 42, and 53 wk of age) were used to investigate line and age effects. In addition, variability between people and repeatability in time of these quality measurements were determined. Body weight at 7 d of age appeared to be the best predictor of BW at slaughter age among all the quality measurements performed. Body weight at 1 d of age had the second greatest predictive value, closely followed by the ratio between BW at 1 d of age and chick length squared. Chick length and shank length both had low to no predictive value whatsoever for posthatch performance. The lack of significant correlations between the Tona score and posthatch performance could be explained by the absence of day-old chicks with anomalies (and thus a suboptimal Tona score) because a distinction had already been made, as is done in practice, between top-grade and lower grade chicks. [less ▲]

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See detailCritical assessment of diabetic xerosis.
PIERARD, Gérald ULg; Franchimont, Claudine ULg; Scheen, André ULg

in Expert Opinion on Medical Diagnostics (2013), 7(2), 201-7

Introduction: Diabetes mellitus is commonly responsible for skin changes including discrete to mild xerosis. Areas covered: This review focuses on some selected relevant bioinstrumental methods assessing ... [more ▼]

Introduction: Diabetes mellitus is commonly responsible for skin changes including discrete to mild xerosis. Areas covered: This review focuses on some selected relevant bioinstrumental methods assessing diabetes xerosis. Peer-reviewed articles on objective non-invasive methods were scrutinized. The reviewed methods address i) the xerosis severity grading scale, ii) corneodynamics referring to the desquamation rate, iii) electrometric assessment of skin hydration including skin capacitance mapping and iv) implication of the imperceptible perspiration. The subjective clinical assessment often fails to disclose diabetic xerosis with confidence and precision. By contrast, a multipronged biometrological approach identifies a cluster of diabetic patients who experience alterations in the structural and functional maturation of the stratum corneum. Expert opinion: A multipronged biometrological approach helps identifying the changes in the stratum corneum of diabetic xerosis. There is a continuum between the 'dry skin' feeling, xerosis and ichthyosiform presentations, particularly on the shins and feet of diabetic patients. [less ▲]

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