Addressing the Current Pedagogical Challenges of Architectural Education in Nigeria; a Study of Curriculum Contents and Factors Affecting Physical Learning Environment

The current curriculum design, program and the state of the physical learning environment in the Nigerian schools of architecture seem inadequate and ineffective. The study examined the teaching of architecture in Nigerian tertiary institutions. The aim is to ascertain the state of the present curriculum contents and learning facilities. Major Challenges identified in this study include dearth of learning facilities, inability to reform the curriculum contents and limited financial resources allocation to run the schools. Also increasing unemployment for architecture graduates and unskilled nature of practicing graduates were also included. Highlighted in the discussion for necessary intervention by stakeholders of Nigerian tertiary institutions includes review and upgrading of existing curriculum, efficient time-management skills and collaborative teaching and learning techniques. For physical learning environment, literature points that a clean, bright, organized and open-plan ventilated space strengthens learning by motivation. The result from the survey carried out on physical classroom environment among students of tertiary institutions, indicates that the level of satisfaction was fairly satisfactory and that the students expressed that large halls, large corridors were the most available facilities (63.2% and 52.8% respectively). The major equipment in the classroom were whiteboards (100%), personal computers (47.2%) and digital projector or smart board (30.4%), while the available facilities for pleasant environment were attractive surroundings (100.0%). Adjustment of training methodology, improving training skills, retraining the trained, upgrading infrastructure and facilities; expansion of the curriculum and training program were recommended in order to comply with the current global trends

The Impact of Time in Doctor-Patient Encounters on Perceived Health Status of Children with Diabetes: Potential Mediating Roles of Shared Decision Making and Resilient Parents

In 2019, diabetes affected approximately 283,000 individuals, aged 20 years or younger, in the U.S. Due to illness symptoms (e.g., hypo/hyperglycemia) and disease-related complications (e.g., nephropathy), individuals report poor health-related quality of life. However, individual-level, family-oriented, and health care system factors may affect perceptions of a child’s overall health status. For example, beliefs of having spent enough time with the doctor may predict proactive health behaviors and perceptions of health. Overall health status may also be indirectly related to time spent in medical conversations. For instance, perceptions of shared decision-making (e.g., exploring pros and cons of treatments together) between families and providers may, in turn, foster family empowerment and resiliency (i.e., ability to adapt, cope, and overcome challenges) in the context of caring for a child with a chronic illness, with positive implications for perceived health status of their child. This study aims to examine the relationships of these variables. At the bivariate level, it was hypothesized that time spent in visits, shared decision making, family resilience, and perceived health status of the child would all be positively related. At the multivariate level, it was hypothesized that doctors working collaboratively with parents and family resilience would serially mediate the relation between time spent in medical visits and perceived health, such that more time spent with the doctor would be associated with perception of collaborative decision making and, in turn, higher levels of resiliency and better overall health status from parents’ perspectives. Utilizing data from the National Survey of Child and Adolescent Health from 2020-2021, this study examined survey responses from 369 parents of children with a reported diabetes diagnosis. Responses were extracted from a larger survey for questions related to time spent with providers in prevention focused visits, collaborative decision-making, family resilience, and health status of the child. Bivariate correlations and serial mediation analyses, per Hayes (2013), were conducted, covarying age, sex, ethnicity of child, health insurance, family structure, income, and education level of parents. Bivariate analyses showed some variables were significantly related in hypothesized directions (p \u3c .05). In serial mediation analyses (10,000 bootstrapped samples), the total effect of time spent with the doctor on overall health status was nonsignificant (t = 0.7767, p = 0.4383), and the direct effect was also nonsignificant when mediators (i.e., collaborative decision making, family resilience) were added (t = 0.805 CI= -0.0044, 0.0122), indicating no serial mediation. Controlling for the effects of the other mediator, a significant indirect effect was found through collaborative decision making (t= 1.9181 CI = 0.0015-0.0940) but not family resilience (t = 0.9565 CI=-0.0059-0.478). This study demonstrates that collaborative decision making with parents mediates the relationship between time spent in preventative health care visits and overall health status. Changes such as policies that incentivize quality of care rather than number of billable visits, or establishment of patient centered medical homes, could support appointments of sufficient length that would allow for collaboration and, in turn, better perceived health status for those affected by diabetes

The effects of rhythm on building openings and fenestrations on airflow pattern in tropical low-rise residential buildings

Effective passive airflow in low-rise residential buildings in hot-humid environment is crucial to maintaining good indoor thermal comfort for occupants. However, investigation of effects of the rhythm of window openings on achieving a passive airflow pattern in such buildings in the tropical climate of sub-Saharan Nigeria have been rarely studied. Therefore, this research aimed to evaluate the effects of the rhythm of window openings on passive airflow patterns for indoor thermal comfort in low-rise residential buildings in the hot-humid environment of Obosi, Nigeria. It involved experimental research using the Anemometer TA465 instrument for measuring wind velocity, relative humidity, and temperature of the purposively designated buildings in the three layouts of the study area for both wet and dry seasons. Employing the Yamane statistical formula, a sample size of 433 was obtained, and questionnaires were administered to occupants of the studied buildings and analyzed using categorical Regression Analysis (CATREG). The regression analysis showed that p=0.000, i.e. p<0.05 indicating that there was a significant relationship between the type and sizes of windows (elements used in measuring rhythm) and the intensity or force of breeze (a measure of passive airflow pattern). Further analysis of the data involved the use of Autodesk CFD 2018 (Computational Fluid Dynamics) for building wind flow simulations. The result showed variations in temperature levels (indications of differences in indoor thermal comfort) of various indoor spaces of the investigated designated floors and buildings, especially ground floors and the top-most floors of the buildings. The study underscored the need to use architectural rhythm design strategies to create a positive impact on airflow patterns in low-rise buildings, especially in densely built-up urban areas. The results of this study are instructive in noting that in order to attain passive airflow in buildings in the face of challenge of land restrictions, vertical stacking of building floors could be used once an adequate rhythm of window openings is adopted

Impact of Landuse Morphology on Urban Transportation

People, cities, nations and the world, in general, would remain largely underdeveloped without transportation systems. However, Transportation puts significant pressure on land use and poses a great challenge to urban sustainability in developing countries. This study examines the influence of Land use structure on Intra-urban transportation in the developing city of cities in the West African sub-region – using Enugu city as a case study. The study uses a descriptive research method. A survey was carried out in six districts within the Enugu metropolis based on a stratified, purposive sampling technique. Questionnaires were used as data collection instruments; 400 respondence participated in the study employing Yamane equation. Furthermore, a twelve-hour (7 am to 7 pm) traffic count was conducted to assess traffic volume. The study finding revealed that Transportation within the urban areas is significantly impacted by Land-use structure, city morphology, neighbourhood characteristics in terms of population and residential density of the city. The hypothesis suggests no significant difference between the various land uses across the Enugu metropolis (p = 0.129). It was also discovered that an average of 122,431 Passenger Car Units (PCU) constantly ply the metropolis roads to service a total population of 564,725 daily, indicated a high rate of car dependency. The study surmises that land use generates vehicular traffic, which impacts the socio-economic environment and the effectiveness of the transportation system. The significance of this study is that the findings contribute to the existing knowledge base that would advance stratic policy formation towards acceleration of the uptake of sustainable urban transportation systems in the region. Doi: 10.28991/cej-2021-03091758 Full Text: PD

The Effects of Rhythm on Building Openings and Fenestrations on Airflow Pattern in Tropical Low-Rise Residential Buildings

Effective passive airflow in low-rise residential buildings in hot-humid environment is crucial to maintaining good indoor thermal comfort for occupants. However, investigation of effects of the rhythm of window openings on achieving a passive airflow pattern in such buildings in the tropical climate of sub-Saharan Nigeria have been rarely studied. Therefore, this research aimed to evaluate the effects of the rhythm of window openings on passive airflow patterns for indoor thermal comfort in low-rise residential buildings in the hot-humid environment of Obosi, Nigeria. It involved experimental research using the Anemometer TA465 instrument for measuring wind velocity, relative humidity, and temperature of the purposively designated buildings in the three layouts of the study area for both wet and dry seasons. Employing the Yamane statistical formula, a sample size of 433 was obtained, and questionnaires were administered to occupants of the studied buildings and analyzed using categorical Regression Analysis (CATREG). The regression analysis showed that p=0.000, i.e. p<0.05 indicating that there was a significant relationship between the type and sizes of windows (elements used in measuring rhythm) and the intensity or force of breeze (a measure of passive airflow pattern). Further analysis of the data involved the use of Autodesk CFD 2018 (Computational Fluid Dynamics) for building wind flow simulations. The result showed variations in temperature levels (indications of differences in indoor thermal comfort) of various indoor spaces of the investigated designated floors and buildings, especially ground floors and the top-most floors of the buildings. The study underscored the need to use architectural rhythm design strategies to create a positive impact on airflow patterns in low-rise buildings, especially in densely built-up urban areas. The results of this study are instructive in noting that in order to attain passive airflow in buildings in the face of challenge of land restrictions, vertical stacking of building floors could be used once an adequate rhythm of window openings is adopted. Doi: 10.28991/CEJ-2023-09-08-016 Full Text: PD

Strategic Agility: A prospect for sustainable performance of micro-businesses in South-Eastern Nigeria

Purpose: To investigate the role strategic agility plays in the sustainable performance of micro-businesses, while specifically, it sort to examine the link between micro-businesses decision-making and technology adoption in South-eastern Nigeria Research methodology: A survey research method was adopted with a population quoted at 210 Micro-business registered owners in South-eastern Nigeria. The sample size of 136 was arrived at using Krejcie and Morgan's (1970) formula. A questionnaire set was designed for data collection and analyzed using the Linear Regression Statistics at a 5% level of significance. Results: Decision-making and technology adoption have a statistical significant relationship with Micro-businesses in South-eastern Nigeria (R2 = .959; F = 1180.390; p-value &lt; 0.05). Limitations: The study did not cover all the five states in the region where the study was conducted. Contribution: The study excruciates strategic agility's role, its prospect for Micro-businesses, and its link with sustainable performance in a turbulent and dynamic business environment

Automatic lineaments mapping and extraction in relationship to natural hydrocarbon seepage in Ugwueme, South-Eastern Nigeria

The study focus on the integration of Remote Sensing and Geographic Information System for identification and delineation of lineaments in relation to natural hydrocarbon seepage, which occur in Ugwueme, South-Eastern Nigeria. To achieve this objective, remotely sensed data (ASTER Digital Elevation Model and Landsat 8 OLI/TIRS) were used to depict the surface expression of faults, folds and fractures which are expressed in the form of lineaments.  The global positioning system (GPS) was also used for ground verification. The geology map of the study area, which is elucidated in the geology of Nigeria was used to show the distribution of rocks and other geologic structures. The delineation of lineament features was done automatically with the PCI Geomatica while the Rock ware was used to generate the Rose diagram for demonstration of the direction of the extracted lineaments. The classification of the lineaments density and the lineaments intersection analysis were categorized as very low, low, moderate, high and very high classes respectively. Areas classified as very high to high lineaments density are potential zone, which act as conduits for hydrocarbon seepage. The result shows that a total lineament frequency of 947 km and a total lineament length of 946 km were delineated from the satellite data. The result further shows that areas with high lineaments density are concentrated in the southwest, south, central and northern part of the study area while areas with low lineament density were found within the eastern part of Ugwueme. The Rose diagram highlight the major trend in the (NE-SW), (N-S) and (NW-SE) directions, and the minor trend in the (W-E) direction.  These directional trends depict the directions of lineaments which act as conduits zones for hydrocarbon seepage in the region.  The overall findings of the study shows that lineament density, lineament intersection and rose diagrams are concepts applicable in hydrocarbon oil and gas seepages

Transit, walking and cycling infrastructure and sustainable development in Enugu city, Nigeria.

In a predominantly urban world, people's ability to move within cities is a critical driver of sustainability. The transportation system which constitutes a large percentage of the physical urban environment provides mobility and aid economic sector. However, it contributes to several major environmental pressures including pollution, congestion, accidents, waste accumulation, resources depletion and disruption of nature. While urban population growth and increase in economic activities combine to generate higher demand for transportation services and heighten the problem. How to effectively deal with these imposing threats and simultaneously provide optimal mobility for city dwellers is the backbone of this research. Drawing experiences from developed cities, the study used Achara layout in Enugu as a case study. From observation, surveys and published literature data were collected and analysed qualitatively. The primary data include, physical traffic count, existing road character, traffic infrastructure and demographic statistics. Findings show the extensive sterility of Enugu’s urban infrastructure to motorized traffic and lack of provision for walking and cycling. It recommends strategies for planning and managing the urban environment which recognizes and acknowledged the social, environmental and economic realities. The conclusion demonstrates that cities designed for pedestrians and cyclist are cities designed for people and sustainable development