Showing papers by "Université du Québec à Montréal published in 1978"

Isostasy and eustasy of Hudson Bay

Abstract: In the eastern Hudson Bay area, a “staircase” of 185 Holocene strand-lines provides a continuous record of emergence from about 8,000 yr B.P. (sidereal) to the present. Ages were obtained from corrected radiocarbon analyses of shells and from application of a newly discovered 45-yr cycle in beach building that is presumed to be related to the “double Hale” solar cycle. Thus, we deduced a record of climatic storminess. The mean curve of emergence confirms Andrews9s model of glacio-isostatic uplift. Analysis of the residuals in the emergence curve can be transformed to an approximate eustatic curve, which shows some degree of coincidence with other sea-level curves derived from low latitudes as well as with several climatic indicators. The strandline analysis appears to be a powerful new tool for Holocene climate analysis and prediction.

Dominion Capitalism: A First Statement

Abstract: The capitalist social orders of Canada, Australia, and New Zealand, as well as Argentina and Uruguay, exhibit a specific configuration of parallel economic structures which distinguish these five nations as a distinctive category within the world economy. Given the formal status of Canada, Australia and New Zealand as self-governing white dominions within the British Empire, and the informal economic integration of Argentina and Uruguay as ’honorary dominions’ within the Empire up until World War I, we label this specific category as ’dominion capitalism’. The salient features of dominion capitalism are :-

Continuities in maternal reports and child behaviors over time in hyperactive and comparison groups.

Abstract: Maternal reports, observations of nursery and elementary school behavior, and teacher ratings of problems were available for hyperactive and control children who had participated in a longitudinal study. This paper examines consistencies in maternal reports and child behaviors over time, and their relationship to teacher ratings in elementary school. Maternal reports of infant sleep difficulties were related to maternal ratings of hyperactivity at 4 1/2 and 6 1/2 years. Maternal ratings of activity at 4 1/2 were predictive of 6 1/2-year ratings of hyperactivity and conduct problems. In addition, behavior in a research nursery at 4 1/2 predicted teacher ratings of problems and classroom behavior in grade two. Hyperactive preschoolers who left the table most during structured activities were more often out-of-seat and off-task in school. Controls who were more aggressive in the nursery were more disruptive in the classroom. These data indicate continuities in both maternal reports and child behaviors.

Social aggression and power relations among preschool children

Abstract: Social agonism and dominance relations were assessed in two preschool groups. An average of 30 hours of observational data was obtained for each group during free-play over a six-week period. A Social Agonism Inventory describing specific initiation and response behaviors during episodes of social conflict was used to code agonistic activity. Dyadic interactions were examined to determine whether the resolution of agonistic interactions conformed to a linear model of social dominance. Although there were group differences in the relative frequency of different forms of conflict, systematic comparison of agonistic wins and losses re vealed similarly rigid and linear dominance structures at both preschools. The relation of aggression and dominance was empirically examined by comparing the initiation and receipt of agonism by high vs low dominance status children. Higher dominance status children engaged in more agonistic interactions, but a majority of these interactions were directed toward other high-ranking group members.

An infrared study of the basicity of non‐aromatic imines: relation to visual pigments

Abstract: — The knowledge of the basicity of non-aromatic Schiff-bases is important for the interpretation of the photochemical primary step of vision. In order to obtain an estimate of it, the infrared spectra in chloroform d solution of a number of aliphatic amines, pyridine derivatives and non-aromatic Schiff- bases have been measured. From the known pKa values of the aliphatic and pyridine bases and the free-associated frequency shift (Av) of the C—D. N hydrogen bonds, the pKa values for the Schiff-bases were inferred. They range from 6 to 8. 5, less basic than aliphatic amines but somewhat more basic than pyridine bases.

The perception of preschool social dominance

Abstract: Children's and teachers' perception of social dominance was examined using a behavioral criterion for determining accuracy of verbal judgments. Video records of agonistic interactions were obtained during approximately 60 hours of free-play at two preschool centers. Analyses of social conflict episodes ending in submission revealed linear dominance structures for both groups. Dominance perception was assessed in two ways. Both teachers and children were asked to rank-order a subgroup of children according to dominance. They were also asked to select the more dominant children in a number of predetermined pairs. Results indicated that teachers could accurately judge dyadic dominance relations, and that accuracy among children varied as a function of their status within the group hierarchy. Findings have implications for social dominance assessment methodology, and for the issue of consensual versus ecological validity in developmental studies of social perception.

Théorie relativiste de l’information et télécommunication. Perspectives

Abstract: La description de toute quantite d’information I doit necessairement faire reference a la source S qui emet cette information et a l’observateur R qui la recoit a ses propres fins; S introduisant la syntaxe du message et R la semantique. Il en resulte qu’une theorie visant a inclure ces deux aspects syntaxique et semantique de l’information sera alors une theorie du triplet (S, I, R) ou, plus generalement, S est un systeme quelconque, qu’il soit biologique, social, ou purement informationnel. Du fait de la presence de R, cette theorie sera alors necessairement une theorie relativiste. L’introduction quantitative de la semantique dans une formulation mathematique de la theorie de l’information doit permettre, en principe, d’ameliorer les resultats obtenus par la theorie de Shannon dans les problemes de transmissions. Apres une introduction a la nature relativiste de la notion d’information, on decrit qualitativement les systemes informationnels d’un point de vue relativiste, et on definit ensuite formellement l’information relativiste interne et l’information relativiste externe, soit syntaxe et semantique. On applique ensuite ces concepts au codage, a la traduction automatique, a la linguistique, aux ensembles flous et a la reconnaissance des formes. La conclusion suggere des perspectives generales, dont, en particulier, une re-interpretation du calcul des probabilites qui pourrait permettre d’aborder certains paradoxes de la mecanique quantique.

Start-Up Torques in Synchronous Motor Drives

Abstract: During run-up as an induction motor, the torque produced by a synchronous machine has oscillating components in addition to the natural frequencies of torsional oscillation of the complete drive system so that the shaft torque may differ substantially from the motor electromagnetic torque. The latter can be divided into four components: 1) a unidirectional or accelerating component, 2) an oscillating component due to magnetic saliency and nonuniform rotor windings, 3) oscillating components due to higher harmonics of air gap permeance and winding magnetomotive force, and 4) components caused by switching the supply. In addition, slot effects and magnetic saturation may also lead to oscillating torque components. The factors affecting the magnitude and frequency of these components are discussed and related to recordings of actual shaft torque.

Contributions of stimulus-incentive and stimulus-response-incentive contingencies to response acquisition and maintenance

Abstract: The effects of stimulus-incentive (S:IS) contingency, stimulus-response-incentive (S:R:IS) contingency, and stimulus-no-response-incentive (S:R:IS) contingency on the acquisition and maintenance of an instrumental approach-contact response in the rat were studied. The experiment, concerned mainly with the temporal distribution of responses, showed that (1) the S:IS contingency and the S:R:IS contingency produced the same temporal distribution of responses; (2) the S:R:IS contingency produced higher rates of response than the S:IS contingency; (3) the negative S:R:IS contingency did not completely eradicate already established responses; and (4)post-CS responding occurred on reinforced trials. Consideration of these results indicates that the critical factor determining the higher rates of response under the S:R:IS contingency may be the S:R:IS occasions experienced only in the instrumental procedure.

Radio-Québec: A Case Study of Institution-Building

Abstract: Radio-Quebec, or the Office de Radio-T616diffusion du Quebec, was founded by the Quebec government in 1969 as an educational television service. This meant that it was parallel, in some respects, to the Ontario Educational Communications Authority or to the "ETV" stations of the Public Broadcasting Service in the United States. It was also perceived (within Quebec) as an historic affirmation of Quebec's constitutional rights in the field of broadcasting. Subsequent to its foundation, Radio-Quebec began a process of development which passed through two distinct phases. The first was that of the foundation itself: the transition from "symbolic affirmation" to "quiescence," characterized by the adoption of a "low profile" and by the concentration on audio-visual documentaries. The second saw a return to a more dynamic, more broadcasting-oriented stance. These "reinterpretations" of Radio-Quebec's mandate took place without any change in the Radio-Quebec Act. It will be argued in this paper that these changes in Radio-Quebec's view of its mandate can be related to the organization's need to secure a certain minimally-acceptable level of support from its environment. The process by which an organization establishes itself successfully within a particular environment may be referred to as "institutionalization," or "legitimization" or-as in the present paper -"institution-building." What these different notions have in common is the idea of a progressive evolution toward "institutionality";1 that is, toward a growing acceptance of the "rightness" of the organization's goals, methods, and procedures, and hence of its right

Le choix du mode d’occupation sur le marché du logement à Montréal : influence de l’origine ethnique

Abstract: The housing conditions in Montreal are mainly characterized by the two following features: firstly, the high percentage of tenants, secondly, the excessively high proportion of French Canadians in that type of tenure. In spite of this important disequilibrium, there are few systematic analysis of the economic, demographic or cultural factors explaining such a phenomenon. The following paper is aimed at filling this gap. The first part deals with theoretical considerations; the second part contains the specification of the model, the method of estimation and the statistical data used for the estimation; the third part analyses the results and brings up the main conclusions.

Existe-t-il un foyer sémantique?

Abstract: Citer cet article Isabelle, P. (1978). Existe-t-il un foyer sémantique?. Cahier de linguistique, (8), 257–271. https://doi.org/10.7202/800068ar Ce document est protégé par la loi sur le droit d'auteur. L'utilisation des services d'Érudit (y compris la reproduction) est assujettie à sa politique d'utilisation que vous pouvez consulter en ligne. [https://apropos.erudit.org/fr/usagers/politique-dutilisation/]