On the presence of a day-of-the-week effect in the foreign exchange market

in Managerial Finance (1995), 21(8), 32-43

The purpose of this paper is to study the presence of the day-of-the-week effect in the foreign exchange market using an extensive data set of six exchange rates and employing two alternative types of ... [more ▼]

The purpose of this paper is to study the presence of the day-of-the-week effect in the foreign exchange market using an extensive data set of six exchange rates and employing two alternative types of distributional assumptions and also distribution-free tests. Our findings support the hypotheses of higher Wednesday returns prior to October 1, 1981, for the British pound, the Canadian dollar, the Deutsch mark, the French franc, the Swiss franc and the Japanese yen. Pursuant to the change in the settlement procedures which took effect October 1, 1981, the differential Wednesday returns disappear. [less ▲]

Proximal Migration of Vena Caval Filters: Report of Two Cases with Operative Retrieval

in Annals of Vascular Surgery (1995), 9(6), 571-5

Operative retrieval of two proximally migrated vena caval filters was performed in two patients, ages 42 and 45 years, respectively. In the first patient the filter was encrusted in the right ventricle ... [more ▼]

Operative retrieval of two proximally migrated vena caval filters was performed in two patients, ages 42 and 45 years, respectively. In the first patient the filter was encrusted in the right ventricle, and in the second one the filter was found in the pulmonary artery. Both filters were retrieved under cardiopulmonary bypass via an incision in the right atrium and the pulmonary artery, respectively. These two observations underscore the risk of increased unwarranted indications and consequent higher complication rates of vena caval filters. [less ▲]

An Automata-Theoretic Approach to Presburger Arithmetic Constraints

in Lecture Notes in Computer Science (1995), 983

This paper introduces a finite-automata based representation of Presburger arithmetic definable sets of integer vectors. The representation consists of concurrent automata operating on the binary ... [more ▼]

This paper introduces a finite-automata based representation of Presburger arithmetic definable sets of integer vectors. The representation consists of concurrent automata operating on the binary encodings of the elements of the represented sets. This representation has several advantages. First, being automata-based it is operational in nature and hence leads directly to algorithms, for instance all usual operations on sets of integer vectors translate naturally to operations on automata. Second, the use of concurrent automata makes it compact. Third, it is insensitive to the representation size of integers. Our representation can be used whenever arithmetic constraints are needed. To illustrate its possibilities we show that it can handle integer programming optimally, and that it leads to a new original algorithm for the satisfiability of arithmetic inequalities. [less ▲]

Problèmes rencontrés par des stagiaires dans l’enseignement des activités physiques et sportives. Analyse par la technique des incidents critiques

in Revue de l'Education Physique (1995), 35(1), 37-48

Les auteurs se sont attachés à identifier les problèmes rencontrés par des futurs enseignants lorsqu'ils font face à une classe. Il est évident qu'il est primordial de dépasser le simple aspect descriptif ... [more ▼]

Les auteurs se sont attachés à identifier les problèmes rencontrés par des futurs enseignants lorsqu'ils font face à une classe. Il est évident qu'il est primordial de dépasser le simple aspect descriptif des problèmes pour analyser les conduites adoptées par l'enseignant pour les résoudre et de découvrir sa perception de l'efficacité de son intervention. [less ▲]

Efficacité des solutions envisagées par des enseignants en formation face à des problèmes rencontrés dans des leçons d’éducation physique

in Revue de l'Education Physique (1995), 35(4), 173-179

La recherche sur l'efficacité de l'enseignement s'est concrétisée et a trouvé application dans plusieurs ouvrages de didactique. Elle a été menée à partir de données directement observables, les ... [more ▼]

La recherche sur l'efficacité de l'enseignement s'est concrétisée et a trouvé application dans plusieurs ouvrages de didactique. Elle a été menée à partir de données directement observables, les comportements et stratégies d'enseignement dans l'action en classe. L'observation des comportements des enseignants, des élèves et des interactions entre ces différents acteurs a contribué à identifier des variables du processus en relation positive ou négative avec les progrès des élèves. ... [less ▲]

Chimiosensibilité in vivo et in vitro de Plasmodium falciparum à Brazzaville (Congo)

in Santé : Cahiers d'Etude et de Recherches Francophones (1995), 5(1), 25-29

Various projects were launched in 1993 to monitor the chemosensitivity of Plasmodium falciparum in Congo. Resistance of 34 strains in Brazzaville to chloroquine, quinine and mefloquine and of 35 to ... [more ▼]

Various projects were launched in 1993 to monitor the chemosensitivity of Plasmodium falciparum in Congo. Resistance of 34 strains in Brazzaville to chloroquine, quinine and mefloquine and of 35 to halofantrine was investigated in an in vitro survey using an isotopic micro test. The resistance rates were 61.8, 14.7, 3.0 and 0.0% respectively. Thus, the chemoresistance which first appeared in 1990 is confirmed and is stable in the population. This finding was further confirmed by a parallel in vitro analysis of sensitivity to chloroquine in Brazzaville. A chloroquine monitoring network is now being established throughout the country based on simplified WHO tests of 100 asymptomatic schoolchildren conducted every six months. The first results in 1993, from three Southern regions indicate that parasites are found in 20 to 60% of cases seven days after a standard 3 day treatment with 25 mg/kg, according to the region. The results of in vitro and in vivo tests are very variable. Indeed, the value of such results for these tests for national monitoring is questionable: a more reliable system of identifying true therapeutic failures would be better suited. [less ▲]

Du corps sanctifié au corps sacrifié : Benetton, fragments d’un dispositif

in Drouin Anne-Marie (Ed.) Le Corps et ses discours (1995)

Régime hydrologique et dynamique fluviale des rivières ardennaises

in L'Ardenne: Essai de Géographie Physique (1995)

Number and relative size of thenar motor units estimated by an adapted multiple point stimulation method.

in Muscle & nerve (1995), 18(9), 969-79

An adapted multiple point stimulation (AMPS) method is described for estimating the number and relative size of thenar motor units. With this method, the median nerve was stimulated at various sites from ... [more ▼]

An adapted multiple point stimulation (AMPS) method is described for estimating the number and relative size of thenar motor units. With this method, the median nerve was stimulated at various sites from the wrist to the elbow. To avoid alternation, only two or three clearly identifiable surface-recorded motor unit action potentials (S-MUAPs) were recruited at each point by incremental stimulation. A total of 10 S-MUAPs, elicited from four to five distinct stimulation points, was used to calculate the average S-MUAP size. By dividing the maximum M-potential size by that value, a motor unit number estimate (MUNE) was derived. In 59 healthy volunteers, from 19 to 87 years old, the mean average S-MUAP size was 87 +/- 27.6 microV.ms and the mean MUNE was 278 +/- 113 motor units. When performed repeatedly, the results were reproducible. The number of motor units declined exponentially with age while average S-MUAP sizes increased only moderately. To assess the validity of the AMPS method, its results were correlated with those obtained using the F-response technique. The correlation coefficient was 0.83 (P < 0.001). [less ▲]

Viability of cloned bovine embryos after one or two cycles of nuclear transfer and in vitro culture

in Theriogenology (1995), 44

We described an exclusively in vitro procedure for cloning and recloning bovine embryos. Embryos obtained by IVM/IVF/IVC developed to the morula stage were used as blastomere donors in cunjunction with ... [more ▼]

We described an exclusively in vitro procedure for cloning and recloning bovine embryos. Embryos obtained by IVM/IVF/IVC developed to the morula stage were used as blastomere donors in cunjunction with IVM recipient oocytes. Reconstructed embryos were developed in vitro in co-culture using bovine oviductal epithelial cells. The resulting morulae were used as donors for recloning under the same experimental conditions. No significant difference was observed between cloning and recloning in terms of development (rates of blastocysts: 12.9 versus 14.9%), in the number of nuclei per blastocyst (63.8 versus 49.1), or in pregnancy rates (35.7 versus 33.3%). The high variability observed between replicates and the correlation between results in first and second cycle nuclear transfer may suggest an inherant potential of individual donor embryos to support development by cloning [less ▲]