laan in (ph.d thesis, tartu. 1999) introduced the principal weak form of condition $(p)$ as condition $(pwp)$ and gave some characterization of monoids by this condition of their acts. in this paper first we introduce condition (g-pwp), a generalization of condition $(pwp)$ of acts over monoids and then will give a characterization of monoids when all right acts satisfy this condition. we also ...

We examine a new approach to modeling uncer­ tainty based on plausibility measures, where a plausibility measure just associates with an event its plausibility, an element is some partially or­ dered set. This approach is easily seen to gener­ alize other approaches to modeling uncertainty, such as probability measures, belief functions, and possibility measures. The lack of structure in a plau...

Based on the observation that spleen cells from Adriamycintreated mice could develop augmented levels of cytotoxic Tlymphocyte activity in response to heat-treated and/or X-irradiated alloantigens, it was postulated that modulations in soluble mediators could be involved in this phenomenon. In fact, in this study Adriamycin-induced increases in the levels of prostaglandin E2 and interleukin 2 a...

Literary theorists today tend to locate the source of the meaning of liter­ ature in its structure or context (the known) rather than in the author or reader (the knower). Maharishi Vedic Science, on the other hand, locates an absolute value of meaning in the integration of the knower, known, and process of knowing and provides a means of experiencing this value in tran­ scendental consciousnes...

Estimer la prévalence de lombalgie chronique et identifier les facteurs risque liés à maladie parmi salariés d’une entreprise transport. Cent dix-huit patients lombalgiques chroniques ont été sélectionnés sur 468 admis pour troubles musculosquelettiques pendant une année. Dans un premier temps, a étudiée dans cette population atteinte au moyen d’un questionnaire soumis l’ensemble des patients. ...

En parcourant la littérature scientifique et professionnelle en enseignement supérieur, il arrive fréquemment de lire qu’un doctorant sur deux abandonne ses études. Un tel taux d’abandon est-il alarmant? Est-il réaliste, voire souhaitable, que tous les doctorants achèvent leurs études? Quelles soient réponses à ces questions, est généralement admis l’encadrement joue un rôle prépondérant dans p...