LU|ZONE|UL @ Laurentian UniversityThe LU|ZONE|UL digital repository system captures, stores, indexes, preserves, and distributes digital research material.http://zone.biblio.laurentian.ca:802024-03-28T22:46:44Z2024-03-28T22:46:44ZDéveloppement de la pensée critique des élèves : une étude des pratiques pédagogiques effectives d’un enseignant d’eps en République du CongoLemvo Makoumbou, ExaucetMandoumou, PaulinKpazaï, Georgeshttps://zone.biblio.laurentian.ca/handle/10219/41162024-03-28T07:09:49Z2023-12-01T00:00:00ZTitle: Développement de la pensée critique des élèves : une étude des pratiques pédagogiques effectives d’un enseignant d’eps en République du Congo
Authors: Lemvo Makoumbou, Exaucet; Mandoumou, Paulin; Kpazaï, Georges
Abstract: La présente étude a pour objectif d’examiner le lien entre les pratiques pédagogiques effectives d’un enseignant d’EPS du collège et le développement de la pensée critique des élèves lors du processus enseignement-apprentissage. Pour ce faire, des pratiques pédagogiques d’un cycle d’enseignement de sept cours d’EPS ont été observées et analysées. Des entrevues semi-dirigées ante et post-classe ont été réalisées avec cet enseignant. Chaque séance d’EPS a été enregistrée et observée au moyen d’une fiche d’observation. Une méthodologie d’études de cas unique selon une approche qualitative a été utilisée pour analyser et interpréter les données recueillies. Les résultats obtenus ont montré une forte proportion de temps didactique en faveur des élèves (71% pour les élèves versus 29% pour l’enseignant) et seulement deux types de styles d’enseignement mis de l’avant selon les approches de Mosston et Ashworth (2006): le style d’enseignement par commandement et le style d’enseignement par découverte guidée. De plus, les résultats révèlent que 20 situations éducatives (dont 9 situations simples et 11 situations complexes) ont été mises en place par l’enseignant lors du cycle d’enseignement. Toutefois, aucune sollicitation cognitive explicite n’a été faite aux élèves lors de la réalisation de ces situations éducatives. Ce qui ne permet pas de penser à un développement optimal réel des attitudes et des habiletés cognitives relatives à la pensée critique des élèves.2023-12-01T00:00:00ZLa pertinence des styles d’enseignement de Mosston et Ashworth au regard des réalités de l’enseignement de l’éducation physique et sportive en République du CongoMoudoudou Loubota, Ghislain ArmandMandoumou, PaulinKpazaï, Georgeshttps://zone.biblio.laurentian.ca/handle/10219/41152024-03-28T07:09:48Z2023-06-01T00:00:00ZTitle: La pertinence des styles d’enseignement de Mosston et Ashworth au regard des réalités de l’enseignement de l’éducation physique et sportive en République du Congo
Authors: Moudoudou Loubota, Ghislain Armand; Mandoumou, Paulin; Kpazaï, Georges
Abstract: Cette étude a pour objectif de vérifier la pertinence des styles d’enseignement de Mosston et Ashworth (2002) au regard des réalités de l’enseignement de l’éducation physique et sportive (EPS) au Congo. Pour ce faire, la Technique du Groupe Nominale (TGN) a été utilisée comme technique de collecte des données pour recueillir les informations. Dix (10) enseignants d’EPS ayant pris part préalablement a une formation sur les styles d’enseignement de Mosston et Ashworth se sont portés volontaires à participer à l’étude. Les résultats obtenus montrent qu’en République du Congo, les styles d’enseignement de Mosston et Ashworth n’ont tous pas été jugés pertinents. Cinq (5) raisons ont été évoquées par les participants : le livre programme de l’INRAP suggère uniquement l’utilisation des styles d’enseignement reproducteurs ; l’insuffisance du volume horaire accordé à l’enseignement de l’EPS ; l’effectif pléthorique des classes ; le manque criard du matériel didactique et le manque d’installations sportives.2023-06-01T00:00:00ZNortheastern Ontario nurses' perceptions of violence in acute care settingsAkpomi-Eferakeya, Oghenefegohttps://zone.biblio.laurentian.ca/handle/10219/41142024-03-27T07:41:31Z2023-01-13T00:00:00ZTitle: Northeastern Ontario nurses' perceptions of violence in acute care settings
Authors: Akpomi-Eferakeya, Oghenefego
Abstract: The incidence of workplace violence (WPV) is increasing and has become a worldwide
concern. This is particularly true among medical workers, especially nurses, who are at a high
risk of exposure, as they are the first and closest contact with patients. The Ontario Council of
Hospital Unions and the Ontario division of the Canadian Union of Public Employees conducted
a survey in Northeastern Ontario in 2019 and found that 96% of personal support workers and
registered practical nurses experienced physical violence while working. This was 8% higher
than the provincial average. This study explores Northeastern Ontario nurses’ perceptions of
violence in an acute-care setting through two research questions: What are Northeastern Ontario
nurses’ perceptions of violence and challenges to preventing violence? What improvements or
changes are needed to reduce or prevent WPV? This study uses Sally Thorne’s (2016)
interpretive description qualitative methodology guided by the Haddon matrix conceptual
framework of WPV. Registered nurses (n = 14) participated in one of three virtual focus groups
from three patient care units. The overarching theme, nurses surviving violence in acute-care
settings, is supported by three key themes: nurses’ different perceptions and levels of threshold
of violence, nurses in jeopardy, and changes needed to the status quo. The findings indicate that
violence against nurses occurs daily and should never be justified. Education, training, and
supports involving hospital staff, the local police department, the community, and the public are
crucial to preventing WPV.2023-01-13T00:00:00ZNumerical modeling and investigations of oxygen transport in microcirculationAbbasi Amiri, Farhadhttps://zone.biblio.laurentian.ca/handle/10219/41132024-03-27T07:41:31Z2023-05-18T00:00:00ZTitle: Numerical modeling and investigations of oxygen transport in microcirculation
Authors: Abbasi Amiri, Farhad
Abstract: Several aspects are involved in the oxygen transport in capillaries, such as the red blood
cell (RBC) membrane mechanics, the cytoplasm/plasma flow fields, and the mass transport
across the semipermeable deformable membrane. The transport process is also influenced
by association and dissociation kinetics, which considers the interaction between oxygen
and hemoglobin molecules within the RBCs. Therefore, a model of oxygen transport must
include these factors to accurately represent the process.
In chapter 1, the microcirculation system, human RBC structure and properties, and oxygenhemoglobin
kinetics have been briefly introduced to provide basic background information
for oxygen transport process in microcirculation. Then, the effects of several important
factors (RBC shape, plasma/cytoplasm convective effect, RBC membrane treatment) on
gas transport in microcirculation have been reviewed. The literature review has shown that
an efficient and robust numerical scheme for simulating oxygen transport in capillaries is
missing and the effects of RBC properties and behaviors have not been well addressed.
The motivation of this Ph.D. research is to develop a transport model to study the effects of
various RBC flows on oxygen transport in capillaries. Several specific research objectives
have been outlined in Section 1.5.
In Chapter 2, we propose a new method called the immersed membrane method for mass
transfer across flexible semipermeable membranes. This method is based on the classical
immersed boundary method used for interaction between structures and flow, and it replaces
the sharp interface of the membrane with an artificial fluid layer. This layer does not
affect the fluid flow or the membrane deformation, but it does add resistance to mass transiii
fer, based on the membrane’s original permeability. By using this approach, we can solve
the mass transfer problem using a single numerical scheme on the same Eulerian mesh,
and we can avoid the complicated interface treatment required for the membrane interface
condition. We also validated this method by comparing numerical results with theoretical
solutions, and satisfactory agreement has been observed.
In Chapter 3, we consider a tank-treading capsule in shear flow, which is generated with
two parallel plates moving in opposite directions: the top plate represents the core of RBCs
in a microvessel with a high oxygen pressure (PO2 ), while the bottom plate represents the
microvessel wall with a lower PO2 . Numerical simulations are conducted to investigate the
individual and combined effects of cytoplasm convection and oxygen-hemoglobin (O2-Hb)
reaction on the oxygen transport efficiency across the tank-treading capsule, and different
PO2 situations and shear rates are also tested.
In Chapter 4, we conduct numerical simulations for the blood flow and RBC deformation
along a capillary and the oxygen transfer from RBCs to the surrounding tissue. We look at
different values of capillary hematocrit, the oxygen tension in the arterioles, and metabolic
rate of oxygen consumption. Our results show that there are two competing factors that
affect the tissue oxygenation while the capillary hematocrit increases: the positive effect
of higher RBC density and the negative effect of the slower RBC movement; and the relevant
strength of these two mechanisms is related to the oxygen-hemoglobin reaction and
hemoglobin concentration and affinity in cytoplasm.
In Chapter 5, we simulate the oxygen uptake processes in stopped-flow experiments with
different cell shapes, membrane permeability and unstirred layer thickness considered. Our
results show that the uptake process from the spherical model is much slower than those
from the ellipsoidal and biconcave shapers, meaning that results form previous studies
using spherical cell models may need to be revisited. Also we find that it is difficult to
distinguish the individual influences from the membrane permeability and unstirred layer,
and more comprehensive models will be required for future studies.
At last, in Chapter 6, concluding statements and future work based on the research results
are presented.2023-05-18T00:00:00Z