The lack of terminology in Zulu can be overcome if it is developed to meet international scientific and technical demands. This lack of terminology can be traced back to the absence of proper language policy implementation with regard to the African languages. Even though Zulu possesses the basic elements that are necessary for its development, such as orthographical standards, dictionaries, grammars and published literature, a number of problems exist within the technical elaboration and standardisation processes: * Inconsistencies in the application of standard rules, in relation to both orthography and terminology. * The lack of standardisation of the (technical) word-formation patterns in Zulu. (Generally the role of culture in elaboration has largely been overlooked). * The avoidance of exploiting written technical text corpora as a resource for terminology. (Text encoding by means of corpus query tools in term extraction has just begun in Zulu and needs to be properly exemplified). * The avoidance of introducing oral technical corpora as a resource for improving the acceptability of technical terminology by, for instance, designing a type of reusable corpus annotation. This study contributes towards solving these problems by offering a practical approach within the context of the real written, standard and oral Zulu language, mainly within the medical terminological domain. This approach offers a reusable methodological foundation with proper language exemplification that can guide terminologists in terminological research, or to some extent even train them, to achieve effective technical elaboration and eventual standardisation. This thesis aims at attaining consistent standardisation on the orthographical level in order to ease the elaboration task of the terminologist. It also aims at standardising the methods of word- (term-) formation linking them to cultural factors, such as taboo. However, this thesis also emphasises the significance of using written and oral technical corpora as terminology resource. This, for instance, is made possible through the application of corpus linguistics, in semi-automatic term extraction from a written technical corpus to aid lemmatisation (listing entries) and in corpus annotation to improve the acceptability of terminology, based on the comparison of standard terms with oral terms. / Linguistics / D. Litt et Phil. (Linguistics)

Le début de l’adolescence est une période de changements rapides où la détresse psychologique et l’expérimentation de la marijuana sont choses fréquentes. Certaines études longitudinales ont démontré que ces deux phénomènes ont tendance à se manifester conjointement tandis que d’autres n’ont pu observer de tel lien. Ces résultats divergents suggèrent que plusieurs questions persistent concernant la nature de cette relation. Cette thèse a pour objectif d’explorer la consommation de marijuana et la détresse psychologique en début d’adolescence afin de mieux saisir les changements à travers le temps, ainsi que d’examiner si ces deux problématiques évoluent conjointement et s’influencent réciproquement. Un échantillon de 448 adolescents garçons et filles fréquentant deux écoles secondaires de Montréal, ont été suivi de secondaire I à secondaire III. De 1999 à 2001, les participants ont complété un questionnaire à chaque année de l’étude incluant des mesures portant sur la consommation de marijuana et la détresse psychologique (IDPESQ-14). Un modèle de mixture semi-paramétrique (Nagin, 2005) a été utilisé afin d’identifier les trajectoires développementales de la consommation de marijuana et de détresse psychologique. Des analyses ont également été effectuées afin d’établir les liens d’appartenance entre chacune des trajectoires de consommation identifiées et la détresse psychologique lors de la première année de l`étude, ainsi qu’entre chacune des trajectoires de détresse psychologique et la consommation de marijuana en première année du secondaire. Finalement, des analyses de trajectoires jointes ont été effectuées afin de déterminer l’interrelation entre la consommation de marijuana et la détresse psychologique. Les résultats de notre étude suggèrent qu’il existe une grande hétérogénéité au niveau de la consommation de marijuana et la détresse psychologique. Trois trajectoires développementales ont été identifiées pour la consommation de marijuana: consommation légère, consommation grandissante et consommation élevée et stable. Trois trajectoires ont également été observées pour la détresse psychologique : basse, moyenne et élevée. Nos résultats démontrent la présence d’un lien entre la détresse psychologique rapportée lors de la première année de l’étude et les trajectoires de consommation problématiques. Ce lien a également été observé entre la consommation de marijuana rapportée lors de première année de l’étude et les trajectoires problématiques de détresse psychologique. Les analyses de trajectoires jointes démontrent la présence d’une concordance entre la consommation de marijuana et la détresse psychologique. Cette interrelation est toutefois complexe puisque les trajectoires de détresse psychologique élevée sont associées à un niveau de consommation de marijuana plus problématique mais l’inverse de cette association est moins probable. Notre étude met en lumière la nature asymétrique de la concordance entre la consommation de marijuana et la détresse psychologique. / Early adolescence is period of rapid changes where psychological distress and marijuana use experimentation are common occurrences. Longitudinal studies examining the association between these two phenomena have provided mixed results and many questions prevail regarding the nature of this association. The purpose of this study is to examine the patterns of co-occurrence between marijuana use and psychological distress in early adolescence. A sample of 448 adolescent boys and girls attending two high schools in Montreal, Canada was followed from Grade 7 to 9. From 1999 to 2001, the participants completed an annual survey which included measures of marijuana use and psychological distress (IDPESQ-14). Using a semi-parametric group based modeling strategy, the study has for objectives to establish the developmental trajectories of marijuana use and psychological distress in early adolescence, to explore how marijuana use or psychological distress measured at baseline is associated with various developmental trajectories and to examine the interrelationship of these two phenomena as they concurrently develop over the span of our study. Our results provide evidence that marijuana use and psychological distress are phenomena with great heterogeneity as they develop over time. We identified 3 trajectories of marijuana use: Light Users, Increasers and High Chronics and 3 trajectories of psychological distress: Low, Medium and High. Our findings also demonstrate that adolescents who reported psychological distress at baseline were more likely to follow problematic trajectories of marijuana use when compared to light users and the reverse of the association was also true since adolescent who reported marijuana use at baseline were more likely to follow an elevated trajectory of psychological distress. Our joint trajectory analysis demonstrated that the developmental patterns of co-occurrence of marijuana use and psychological distress are complex. Our study provides evidence that adolescents following a trajectory of elevated psychological distress are at increased risk of also following a trajectory of elevated marijuana use but adolescents following a problematic trajectory of marijuana use are not necessarily at greater risk of following an elevated trajectory of psychological distress. Our study highlights the presence of an asymmetrical relationship between marijuana use and psychological distress in early adolescence.

Made available in DSpace on 2016-04-28T20:56:19Z (GMT). No. of bitstreams: 1 Elisabete Honorio Custodio Cezar.pdf: 5116283 bytes, checksum: 3466b870d377071b29fc6faa9d47a642 (MD5) Previous issue date: 2010-11-26 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / The failure of school continues to be part of the reality of our country, mainly in elementary school in São Paulo. Many students present performance deficient, so we need to search new methodologies to help students. Behavioral researchers have conducted studies based on the equivalence of stimuli model, with positive results. The present work proposes to teach adequate use of verbs to 20 students retained at the end of the elementary school. The teaching program is based in the equivalence of stimuli model and was applied with educational software Mestre® (Goyos e Almeida, 1996). First, there was the assessment of the Repertoire of Verbal Agreement by the Repertoire in Verbal Agreement (DRCV) which evaluated different relationships between name/number/pronoun/person of verbal/verb conjugation present perfect/past tense/ future with regular conjugation. Some relations were teached and, after than, emergence of other not trained and held the Test of Generalization for other verbs not taught. Finally, the DRCV was applied again, to measure performance after the experimental treatment. Comparing the prior performance with performance obtained with of the teaching procedure, except one participant, all the others presented have improved performance, getting the desirable goal, which was 80% correct answer at their least. The results show the adequate use of relations between name, number, pronoun, person of verbal conjugation by participants and point out that equivalence relations can be use with efficacy to improve the adequate use of verbs by individuals / O fracasso escolar continua a fazer parte da realidade de nosso país, principalmente em alunos concluintes do Ciclo II do Ensino Fundamental. Muitos apresentam desempenho deficitário para a relação série/idade, por isso é necessário realizar pesquisas com novas metodologias que auxiliem os alunos em seu aprendizado. Pesquisadores da abordagem comportamental têm realizados estudos baseados no paradigma de equivalência de estímulos, com resultados positivos. O presente trabalho teve como propósito aplicar uma programação de ensino de Concordância Verbal em alunos retidos no final do Ciclo II do Ensino Fundamental, tendo como base o paradigma de equivalência de estímulos e utilizando o software educativo Mestre® (Goyos e Almeida, 1996). Participaram 20 alunos do Ensino Fundamental de uma escola estadual da grande São Paulo. Inicialmente, ocorreu a avaliação do repertório de Concordância Verbal, por meio do Diagnóstico do Repertório em Concordância Verbal (DRCV), no qual se avaliaram diferentes relações entre nome/número/pronome/pessoa da conjugação verbal/verbo no presente/verbo no pretérito perfeito/ verbo no futuro do presente, sendo os verbos no Modo Indicativo com terminações AR, ER, IR com conjugação regular. Ocorreu o ensino de diferentes relações, e testou-se a emergência de outras relações não treinadas e realizou-se o Teste de Generalização para outros verbos não ensinados. Por fim, reaplicou-se o instrumento de avaliação do repertório de Concordância Verbal após encerrado o procedimento de ensino. Comparando o desempenho prévio com o apresentado após finalizado o ensino programado, verificou-se que todos os participantes melhoraram o desempenho, sendo que, com exceção de um deles, todos chegaram ao patamar desejável de 80% de acertos no mínimo. Os resultados mostrando o uso adequado das relações entre nome, número, pronome, pessoa da conjugação verbal e declinações do verbo pelos participantes, evidenciam que propostas de ensino com base na equivalência de estímulos, são eficazes no aperfeiçoamento do repertório de Concordância Verbal

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Agreement between raters on a categorical scale is not only a subject of scientific research but also a problem frequently encountered in practice. Whenever a new scale is developed to assess individuals or items in a certain context, inter-rater agreement is a prerequisite for the scale to be actually implemented in routine use. Cohen's kappa coeffcient is a landmark in the developments of rater agreement theory. This coeffcient, which operated a radical change in previously proposed indexes, opened a new field of research in the domain. In the first part of this work, after a brief review of agreement on a quantitative scale, the kappa-like family of agreement indexes is described in various instances: two raters, several raters, an isolated rater and a group of raters and two groups of raters. To quantify the agreement between two individual raters, Cohen's kappa coefficient (Cohen, 1960) and the intraclass kappa coefficient (Kraemer, 1979) are widely used for binary and nominal scales, while the weighted kappa coefficient (Cohen, 1968) is recommended for ordinal scales. An interpretation of the quadratic (Schuster, 2004) and the linear (Vanbelle and Albert, 2009c) weighting schemes is given. Cohen's kappa (Fleiss, 1971) and intraclass kappa (Landis and Koch, 1977c) coefficients were extended to the case where agreement is searched between several raters. Next, the kappa-like family of agreement coefficients is extended to the case of an isolated rater and a group of raters (Vanbelle and Albert, 2009a) and to the case of two groups of raters (Vanbelle and Albert, 2009b). These agreement coefficients are derived on a population-based model and reduce to the well-known Cohen's kappa coefficient in the case of two single raters. The proposed agreement indexes are also compared to existing methods, the consensus method and Schouten's agreement index (Schouten, 1982). The superiority of the new approach over the latter is shown. In the second part of the work, methods for hypothesis testing and data modeling are discussed. Firstly, the method proposed by Fleiss (1981) for comparing several independent agreement indexes is presented. Then, a bootstrap method initially developed by McKenzie et al. (1996) to compare two dependent agreement indexes, is extended to several dependent agreement indexes (Vanbelle and Albert, 2008). All these methods equally apply to the kappa coefficients introduced in the first part of the work. Next, regression methods for testing the effect of continuous and categorical covariates on the agreement between two or several raters are reviewed. This includes the weighted least-squares method allowing only for categorical covariates (Barnhart and Williamson, 2002) and a regression method based on two sets of generalized estimating equations. The latter method was developed for the intraclass kappa coefficient (Klar et al., 2000), Cohen's kappa coefficient (Williamson et al., 2000) and the weighted kappa coefficient (Gonin et al., 2000). Finally, a heuristic method, restricted to the case of independent observations, is presented (Lipsitz et al., 2001, 2003) which turns out to be equivalent to the generalized estimating equations approach. These regression methods are compared to the bootstrap method extended by Vanbelle and Albert (2008) but they were not generalized to agreement between a single rater and a group of raters nor between two groups of raters. / Sujet d'intenses recherches scientifiques, l'accord entre observateurs sur une échelle catégorisée est aussi un problème fréquemment rencontré en pratique. Lorsqu'une nouvelle échelle de mesure est développée pour évaluer des sujets ou des objets, l'étude de l'accord inter-observateurs est un prérequis indispensable pour son utilisation en routine. Le coefficient kappa de Cohen constitue un tournant dans les développements de la théorie sur l'accord entre observateurs. Ce coefficient, radicalement différent de ceux proposés auparavant, a ouvert de nouvelles voies de recherche dans le domaine. Dans la première partie de ce travail, après une brève revue des mesures d'accord sur une échelle quantitative, la famille des coefficients kappa est décrite dans différentes situations: deux observateurs, plusieurs observateurs, un observateur isolé et un groupe d'observateurs, et enfin deux groupes d'observateurs. Pour quantifier l'accord entre deux observateurs, le coefficient kappa de Cohen (Cohen, 1960) et le coefficient kappa intraclasse (Kraemer, 1979) sont largement utilisés pour les échelles binaires et nominales. Par contre, le coefficient kappa pondéré (Cohen, 1968) est recommandé pour les échelles ordinales. Schuster (2004) a donné une interprétation des poids quadratiques tandis que Vanbelle and Albert (2009c) se sont interessés aux poids linéaires. Les coefficients d'accord correspondant au coefficient kappa de Cohen (Fleiss, 1971) et au coefficient kappa intraclasse (Landis and Koch, 1977c) sont aussi donnés dans le cas de plusieurs observateurs. La famille des coefficients kappa est ensuite étendue au cas d'un observateur isolé et d'un groupe d'observateurs (Vanbelle and Albert, 2009a) et au cas de deux groupes d'observateurs (Vanbelle and Albert, 2009b). Les coefficients d'accord sont élaborés à partir d'un modèle de population et se réduisent au coefficient kappa de Cohen dans le cas de deux observateurs isolés. Les coefficients d'accord proposés sont aussi comparés aux méthodes existantes, la méthode du consensus et le coefficient d'accord de Schouten (Schouten, 1982). La supériorité de la nouvelle approche sur ces dernières est démontrée. Des méthodes qui permettent de tester des hypothèses et modéliser des coefficients d'accord sont abordées dans la seconde partie du travail. Une méthode permettant la comparaison de plusieurs coefficients d'accord indépendants (Fleiss, 1981) est d'abord présentée. Puis, une méthode basée sur le bootstrap, initialement développée par McKenzie et al. (1996) pour comparer deux coefficients d'accord dépendants, est étendue au cas de plusieurs coefficients dépendants par Vanbelle and Albert (2008). Pour finir, des méthodes de régression permettant de tester l'effet de covariables continues et catégorisées sur l'accord entre deux observateurs sont exposées. Ceci comprend la méthode des moindres carrés pondérés (Barnhart and Williamson, 2002), admettant seulement des covariables catégorisées, et une méthode de régression basée sur deux équations d'estimation généralisées. Cette dernière méthode a été développée dans le cas du coefficient kappa intraclasse (Klar et al., 2000), du coefficient kappa de Cohen (Williamson et al., 2000) et du coefficient kappa pondéré (Gonin et al., 2000). Enfin, une méthode heuristique, limitée au cas d'observations indépendantes, est présentée (Lipsitz et al., 2001, 2003). Elle est équivalente à l'approche par les équations d'estimation généralisées. Ces méthodes de régression sont comparées à l'approche par le bootstrap (Vanbelle and Albert, 2008) mais elles n'ont pas encore été généralisées au cas d'un observateur isolé et d'un groupe d'observateurs ni au cas de deux groupes d'observateurs. / Het bepalen van overeenstemming tussen beoordelaars voor categorische gegevens is niet alleen een kwestie van wetenschappelijk onderzoek, maar ook een probleem dat men veelvuldig in de praktijk tegenkomt. Telkens wanneer een nieuwe schaal wordt ontwikkeld om individuele personen of zaken te evalueren in een bepaalde context, is interbeoordelaarsovereenstemming een noodzakelijke voorwaarde vooraleer de schaal in de praktijk kan worden toegepast. Cohen's kappa coëfficiënt is een mijlpaal in de ontwikkeling van de theorie van interbeoordelaarsovereenstemming. Deze coëfficiënt, die een radicale verandering met de voorgaande indices inhield, opende een nieuw onderzoeksspoor in het domein. In het eerste deel van dit werk wordt, na een kort overzicht van overeenstemming voor kwantitatieve gegevens, de kappa-achtige familie van overeenstemmingsindices beschreven in verschillende gevallen: twee beoordelaars, verschillende beoordelaars, één geïsoleerde beoordelaar en een groep van beoordelaars, en twee groepen van beoordelaars. Om de overeenstemming tussen twee individuele beoordelaars te kwantificeren worden Cohen's kappa coëfficiënt (Cohen, 1960) en de intraklasse kappa coëfficiënt (Kraemer, 1979) veelvuldig gebruikt voor binaire en nominale gegevens, terwijl de gewogen Kappa coëfficiënt (Cohen, 1968) aangewezen is voor ordinale gegevens. Een interpretatie van de kwadratische (Schuster, 2004) en lineaire (Vanbelle and Albert, 2009c) weegschema's wordt gegeven. Overeenstemmingsindices die overeenkomen met Cohen's Kappa (Fleiss, 1971) en intraklasse-kappa (Landis and Koch, 1977c) coëfficiënten kunnen worden gebruikt om de overeenstemming tussen verschillende beoordelaars te beschrijven. Daarna wordt de familie van kappa-achtige overeenstemmingscoëfficiënten uitgebreid tot het geval van één geïsoleerde beoordelaar en een groep van beoordelaars (Vanbelle and Albert, 2009a) en tot het geval van twee groepen van beoordelaars (Vanbelle and Albert, 2009b). Deze overeenstemmingscoëfficiënten zijn afgeleid van een populatie-gebaseerd model en kunnen worden herleid tot de welbekende Cohen's coëfficiënt in het geval van twee individuele beoordelaars. De voorgestelde overeenstemmingsindices worden ook vergeleken met bestaande methodes, de consensusmethode en Schoutens overeenstemmingsindex (Schouten, 1982). De superioriteit van de nieuwe benadering over de laatstgenoemde wordt aangetoond. In het tweede deel van het werk worden hypothesetesten en gegevensmodellering besproken. Vooreerst wordt de methode voorgesteld door Fleiss (1981) om verschillende onafhankelijke overeenstemmingsindices te vergelijken, voorgesteld. Daarna wordt een bootstrapmethode, oorspronkelijk ontwikkeld door McKenzie et al. (1996) om twee onafhankelijke overeenstemmingsindices te vergelijken, uitgebreid tot verschillende afhankelijke overeenstemmingsindices (Vanbelle and Albert, 2008). Al deze methoden kunnen ook worden toegepast op de overeenstemmingsindices die in het eerste deel van het werk zijn beschreven. Ten slotte wordt een overzicht gegeven van regressiemethodes om het eect van continue en categorische covariabelen op de overeenstemming tussen twee of meer beoordelaars te testen. Dit omvat de gewogen kleinste kwadraten methode, die alleen werkt met categorische covariabelen (Barnhart and Williamson, 2002) en een regressiemethode gebaseerd op twee sets van gegeneraliseerde schattingsvergelijkingen. De laatste methode was ontwikkeld voor de intraklasse kappa coëfficiënt (Klar et al., 2000), Cohen's kappa coëfficiënt (Williamson et al., 2000) en de gewogen kappa coëfficiënt (Gonin et al., 2000). Ten slotte wordt een heuristische methode voorgesteld die alleen van toepassing is op het geval van onafhankelijk waarnemingen (Lipsitz et al., 2001, 2003). Ze blijkt equivalent te zijn met de benadering van de gegeneraliseerde schattingsvergelijkingen. Deze regressiemethoden worden vergeleken met de bootstrapmethode uitgebreid door Vanbelle and Albert (2008) maar werden niet veralgemeend tot de overeenstemming tussen een enkele beoordelaar en een groep van beoordelaars, en ook niet tussen twee groepen van beoordelaars.

While the study of complete sources is very valuable, and has contributed greatly to what is understood of music history, the perspective they contribute is limited because they cannot reveal information about how music and music sources were most often used. The study of functional sources, more probably created for use, allows for more insight into how music was performed and understood, and how such sources were created, used and valued. This study examines twelve fragmentary early sixteenth-century English sources from the Digital Image Archive of Medieval Music (DIAMM) database, constituting a sample of functional music sources in this period. The study of this sampling reveals information about how functional manuscripts were created, used and valued in England during this time period. Some of the fragments contain works with concordances. These concordances are compared using variant comparison, where differences in the versions of the work are considered and weighed. The comparative study of concordances provides insight into the transmission of the versions, scribal and performance culture, as well as into music culture in general. Overall, the study of this sampling of early sixteenth-century functional English sources provides a clearer understanding of the use of accidentals, scribes and scribal culture, performers, performance practice and music culture in England at this time, contributing to the understanding of music history.

While the study of complete sources is very valuable, and has contributed greatly to what is understood of music history, the perspective they contribute is limited because they cannot reveal information about how music and music sources were most often used. The study of functional sources, more probably created for use, allows for more insight into how music was performed and understood, and how such sources were created, used and valued. This study examines twelve fragmentary early sixteenth-century English sources from the Digital Image Archive of Medieval Music (DIAMM) database, constituting a sample of functional music sources in this period. The study of this sampling reveals information about how functional manuscripts were created, used and valued in England during this time period. Some of the fragments contain works with concordances. These concordances are compared using variant comparison, where differences in the versions of the work are considered and weighed. The comparative study of concordances provides insight into the transmission of the versions, scribal and performance culture, as well as into music culture in general. Overall, the study of this sampling of early sixteenth-century functional English sources provides a clearer understanding of the use of accidentals, scribes and scribal culture, performers, performance practice and music culture in England at this time, contributing to the understanding of music history.

In the Commedia of Dante, a poem 14,233 lines in length, some 7,500 words occur only once. These are the hapax. Fewer than 2% of these constitute a minute but distinct subset—the hapax for which there are one or more words in the poem whose spelling is identical but whose meaning is different. These are what I call same-spelling hapax. I identify four categories: part-of-speech, homograph, locus, and name. Analysis of the same-spelling hapax illuminates a poetic strategy continuously in use throughout the poem. This is to use the one-word overlap of Rhyme and line number. Not only is it highly probable that a same-spelling hapax will be a rhyme-word, but it is also probable that it will occupy a rhyme-word’s most significant position—the one place—the single word—where the two intertwined formal entities that shape each canto coincide. Every three lines, their tension-resolving this-word-only union intensifies the reader’s attention and understanding alike.

Le début de l’adolescence est une période de changements rapides où la détresse psychologique et l’expérimentation de la marijuana sont choses fréquentes. Certaines études longitudinales ont démontré que ces deux phénomènes ont tendance à se manifester conjointement tandis que d’autres n’ont pu observer de tel lien. Ces résultats divergents suggèrent que plusieurs questions persistent concernant la nature de cette relation. Cette thèse a pour objectif d’explorer la consommation de marijuana et la détresse psychologique en début d’adolescence afin de mieux saisir les changements à travers le temps, ainsi que d’examiner si ces deux problématiques évoluent conjointement et s’influencent réciproquement. Un échantillon de 448 adolescents garçons et filles fréquentant deux écoles secondaires de Montréal, ont été suivi de secondaire I à secondaire III. De 1999 à 2001, les participants ont complété un questionnaire à chaque année de l’étude incluant des mesures portant sur la consommation de marijuana et la détresse psychologique (IDPESQ-14). Un modèle de mixture semi-paramétrique (Nagin, 2005) a été utilisé afin d’identifier les trajectoires développementales de la consommation de marijuana et de détresse psychologique. Des analyses ont également été effectuées afin d’établir les liens d’appartenance entre chacune des trajectoires de consommation identifiées et la détresse psychologique lors de la première année de l`étude, ainsi qu’entre chacune des trajectoires de détresse psychologique et la consommation de marijuana en première année du secondaire. Finalement, des analyses de trajectoires jointes ont été effectuées afin de déterminer l’interrelation entre la consommation de marijuana et la détresse psychologique. Les résultats de notre étude suggèrent qu’il existe une grande hétérogénéité au niveau de la consommation de marijuana et la détresse psychologique. Trois trajectoires développementales ont été identifiées pour la consommation de marijuana: consommation légère, consommation grandissante et consommation élevée et stable. Trois trajectoires ont également été observées pour la détresse psychologique : basse, moyenne et élevée. Nos résultats démontrent la présence d’un lien entre la détresse psychologique rapportée lors de la première année de l’étude et les trajectoires de consommation problématiques. Ce lien a également été observé entre la consommation de marijuana rapportée lors de première année de l’étude et les trajectoires problématiques de détresse psychologique. Les analyses de trajectoires jointes démontrent la présence d’une concordance entre la consommation de marijuana et la détresse psychologique. Cette interrelation est toutefois complexe puisque les trajectoires de détresse psychologique élevée sont associées à un niveau de consommation de marijuana plus problématique mais l’inverse de cette association est moins probable. Notre étude met en lumière la nature asymétrique de la concordance entre la consommation de marijuana et la détresse psychologique. / Early adolescence is period of rapid changes where psychological distress and marijuana use experimentation are common occurrences. Longitudinal studies examining the association between these two phenomena have provided mixed results and many questions prevail regarding the nature of this association. The purpose of this study is to examine the patterns of co-occurrence between marijuana use and psychological distress in early adolescence. A sample of 448 adolescent boys and girls attending two high schools in Montreal, Canada was followed from Grade 7 to 9. From 1999 to 2001, the participants completed an annual survey which included measures of marijuana use and psychological distress (IDPESQ-14). Using a semi-parametric group based modeling strategy, the study has for objectives to establish the developmental trajectories of marijuana use and psychological distress in early adolescence, to explore how marijuana use or psychological distress measured at baseline is associated with various developmental trajectories and to examine the interrelationship of these two phenomena as they concurrently develop over the span of our study. Our results provide evidence that marijuana use and psychological distress are phenomena with great heterogeneity as they develop over time. We identified 3 trajectories of marijuana use: Light Users, Increasers and High Chronics and 3 trajectories of psychological distress: Low, Medium and High. Our findings also demonstrate that adolescents who reported psychological distress at baseline were more likely to follow problematic trajectories of marijuana use when compared to light users and the reverse of the association was also true since adolescent who reported marijuana use at baseline were more likely to follow an elevated trajectory of psychological distress. Our joint trajectory analysis demonstrated that the developmental patterns of co-occurrence of marijuana use and psychological distress are complex. Our study provides evidence that adolescents following a trajectory of elevated psychological distress are at increased risk of also following a trajectory of elevated marijuana use but adolescents following a problematic trajectory of marijuana use are not necessarily at greater risk of following an elevated trajectory of psychological distress. Our study highlights the presence of an asymmetrical relationship between marijuana use and psychological distress in early adolescence.

While the study of complete sources is very valuable, and has contributed greatly to what is understood of music history, the perspective they contribute is limited because they cannot reveal information about how music and music sources were most often used. The study of functional sources, more probably created for use, allows for more insight into how music was performed and understood, and how such sources were created, used and valued. This study examines twelve fragmentary early sixteenth-century English sources from the Digital Image Archive of Medieval Music (DIAMM) database, constituting a sample of functional music sources in this period. The study of this sampling reveals information about how functional manuscripts were created, used and valued in England during this time period. Some of the fragments contain works with concordances. These concordances are compared using variant comparison, where differences in the versions of the work are considered and weighed. The comparative study of concordances provides insight into the transmission of the versions, scribal and performance culture, as well as into music culture in general. Overall, the study of this sampling of early sixteenth-century functional English sources provides a clearer understanding of the use of accidentals, scribes and scribal culture, performers, performance practice and music culture in England at this time, contributing to the understanding of music history.