Quantitative traits correlative analysis and growth comparison among different populations of bay scallop, Argopecten irradians

The shell traits and weight traits are measured in cultured populations of bay scallop, Argopecten irradians. The results of regression analysis show that the regression relationships for all the traits are significant (P < 0.01). The correlative coefficients between body weight, as well as tissue weight with shell length, shell height and shell width are significant (P < 0.05). But the correlative coefficients between the anterior and posterior auricle length with body weight as well as tissue weight are not significant (P > 0.05). The multiple regression equation is obtained to estimate live body weight and tissue weight. The above traits except anterior and posterior auricle length are used for the growth and production comparison among three cultured populations, Duncan's new multiple range procedure analysis shows that all the traits in the Lingshuiqiao (LSQ) population are much more significant than those of the other two populations (P < 0.01), and there is no significant difference between the Qipanmo (QPM) and Dalijia (DLJ) populations in all traits (P > 0.05). The results indicate that the LSQ population has a higher growth rate and is expected to be more productive than the other two populations.

A psychometric evaluation of the Learning Styles Questionnaire : 40-item version

Sixty-six English-speaking postgraduate distance-education medical students completed the Learning Styles Questionnaire (LSQ: 40-item version). This was completed while attending a residential workshop at the beginning of the semester, and 44 of these students completed the same LSQ questionnaire 5 months later at the completion of the semester. The psychometric properties of the LSQ were assessed using Cronbach’s alpha (internal consistency), test-retest, correlational analyses and factor analysis. The results indicated that the LSQ (40-item version) has poor reliability and validity, and therefore requires further development and psychometric evaluation.

Integração de redes GNSS: uma proposta metodológica de densificação da rede SIRGAS na América do Sul

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise de séries temporais de coordenadas estimadas com GPS: uma proposta metodológica para detecção, remoção e recuperação de efeitos sazonais

GPS active networks are more and more used in geodetic surveying and scientific experiments, as water vapor monitoring in the atmosphere and lithosphere plate movement. Among the methods of GPS positioning, Precise Point Positioning (PPP) has provided very good results. A characteristic of PPP is related to the modeling and/or estimation of the errors involved in this method. The accuracy obtained for the coordinates can reach few millimeters. Seasonal effects can affect such accuracy if they are not consistent treated during the data processing. Coordinates time series analyses have been realized using Fourier or Harmonics spectral analyses, wavelets, least squares estimation among others. An approach is presented in this paper aiming to investigate the seasonal effects included in the stations coordinates time series. Experiments were carried out using data from stations Manaus (NAUS) and Fortaleza (BRFT) which belong to the Brazilian Continuous GPS Network (RBMC). The coordinates of these stations were estimated daily using PPP and were analyzed through wavelets for identification of the periods of the seasonal effects (annual and semi-annual) in each time series. These effects were removed by means of a filtering process applied in the series via the least squares adjustment (LSQ) of a periodic function. The results showed that the combination of these two mathematical tools, wavelets and LSQ, is an interesting and efficient technique for removal of seasonal effects in time series.

Análise de séries temporais de coordenadas estimadas com gps: Uma proposta metodológica para detecção, remoção e recuperação de efeitos sazonais

GPS active networks are more and more used in geodetic surveying and scientific experiments, as water vapor monitoring in the atmosphere and lithosphere plate movement. Among the methods of GPS positioning, Precise Point Positioning (PPP) has provided very good results. A characteristic of PPP is related to the modeling and / or estimation of the errors involved in this method. The accuracy obtained for the coordinates can reach few millimeters. Seasonal effects can affect such accuracy if they are not consistent treated during the data processing. Coordinates time series analyses have been realized using Fourier or Harmonics spectral analyses, wavelets, least squares estimation among others. An approach is presented in this paper aiming to investigate the seasonal effects included in the stations coordinates time series. Experiments were carried out using data from stations Manaus (NAUS) and Fortaleza (BRFT) which belong to the Brazilian Continuous GPS Network (RBMC). The coordinates of these stations were estimated daily using PPP and were analyzed through wavelets for identification of the periods of the seasonal effects (annual and semi-annual) in each time series. These effects were removed by means of a filtering process applied in the series via the least squares adjustment (LSQ) of a periodic function. The results showed that the combination of these two mathematical tools, wavelets and LSQ, is an interesting and efficient technique for removal of seasonal effects in time series.

Gray's Reinforcement Sensitivity Theory: a psychometric critique

This study identifies valid orthogonal scales of Gray's animal learning paradigms, upon which his Reinforcement Sensitivity Theory (RST) is based, by determining a revised structure to the Gray-Wilson Personality Questionnaire (GWPQ) (Wilson, Gray, & Barrett, 1990). It is also determined how well Gray's RST scales predict the surface scales of personality, which were measured in terms of Eysenck Personality Profiler (EPP) scales, the EPQ-R and the learning styles questionnaire (LSQ) scales. First, results suggest that independent pathways of RST scales may exist in humans. Second, Fight seems related to Anxiety and not the Fight/Flight system as proposed by RST. Third. a remarkably consistent story emerges in that Extraversion scales are predicted by Fight, Psychoticism scales are predicted by Active-avoidance, Fight and/or Flight, and Neuroticism scales tend not to be predicted at all (except for Anxiety). Fourth, Gray's revised scales are Unrelated to gender and age effects and show a predictable overlap with the LSQ and original GWPQ scales. It is concluded that Gray's model of personality might provide a stable biological basis of many surface scales of personality, but that there must also be other influences on personality. These results question the finer structure of Gray's RST whilst also showing that RST has greater range of applicability than a strict interpretation of theory implies. (C) 2002 Elsevier Science Ltd. All rights reserved.

Conception d'une situation d'apprentissage qui permettra le passage de l'oral signé à l'écrit chez des apprenants sourds de niveau présecondaire, selon la syntaxe du français de la majorité

De nos jours, la communication écrite joue un rôle primordial pour tout individu qui désire se faire une place dans la société tant sur le plan personnel que socioprofessionnel. Chez les apprenants sourds, le passage à l’écrit du français de la majorité représente un grand défi et leurs phrases contiennent souvent des erreurs de syntaxe. Par exemple, les apprenants sourds auraient tendance à reproduire à l’écrit la syntaxe de la LSQ croyant que les règles de la grammaire de la phrase sont identiques. Dans cet essai, nous nous interrogeons sur les stratégies à adopter pour amener des adultes sourds gestuels à effectuer un transfert efficace de l’oral signé vers le français écrit. Pour ce faire, une situation d’apprentissage (S.A) destinée aux apprenants sourds de niveau présecondaire a été élaborée. Basée sur l’enseignement stratégique et la grammaire de la phrase de base, cette S.A exploite d’abord les bases du fonctionnement de la langue des signes québécoise (LSQ) pour ensuite introduire les notions de la phrase de base et de ses constituants selon la grammaire rénovée. Cette S.A a ensuite été soumise pour validation et rétroaction à la conseillère pédagogique du Centre d’éducation aux adultes où nous travaillons. Ses commentaires, conjugués aux observations notées lors de la mise à l’essai auprès de trois apprenants, ont permis de prendre conscience des forces de cette S.A et d’apporter des ajustements visant à optimiser l’efficacité des différentes activités d’apprentissage.

Étude des critères d'utilité, d'iconicité et d'ergonomie : base théorique pour l'élaboration d'un code de communication fonctionnelle destiné à des personnes aveugles devenues sourdes à un âge avancé

La population dont il est question ici, soit celle des personnes aveugles devenues-sourdes a perdu, tardivement, un sens essentiel à la communication; sans l'ouïe, elle est confinée à un monde de silence et d'isolement auquel elle n'est pas préparée. Elle se trouve dépourvue de moyens de communication, d'où l'urgence de mettre en oeuvre un programme pour rétablir une communication fonctionnelle dans ses activités de la vie quotidienne. La langue des signes québécoise (LSQ) constituant pour ces personnes une langue seconde, son apprentissage se révèle complexe, aussi, notre mobile est clair et délimité : restaurer une communication déficiente à l'aide d'un code de signes fonctionnels tout en favorisant la possibilité ultérieure d'acquérir la LSQ, s'il y a lieu. Pour cette raison, les signes sont choisis à même le répertoire de la LSQ et ils le sont selon des critères d'utilité, d'iconicité et d'ergonomie. Suite à l'étude de ces critères, des constituants andragogiques seront analysés, ce qui permettra l'élaboration d'un code de communication fonctionnelle.