19 research outputs found
Creativity among Undergraduate Architecture Students of University of Uyo, Uyo, Nigeria, 2009 - 2012
Architectural design is a process that relies on creativity to arrive at acceptable solutions in the bid to alter, shape and create or re-create the built environment for satisfactory human use. To achieve this, design skills have to be developed either through apprenticeship or formal education. The main objective of this study is to examine how architectural design creativity is assessed by educators in the University of Uyo, Nigeria. Poor design output by majority of students has become a cause for concern. The study population consists of all the twelve lecturers involved in design studio mentoring. Qualitative research methodology was used involving interviews and examination of official documents relating to architectural design. The findings of the study reveal that three major criteria are used for the assessment as follows; Investigativeness/understanding of the project, application of lessons from existing projects, and the ability to proffer novel solutions. Based on these, a standard assessment format was developed with marks or points assigned to each unit for ease of appraisal. The study also reveals that five of the studio mentors use checklist method and brain storming sessions to boast creativity. The assessment of creativity is subjective and is based on the assessors’ interpretation of the design. The paper concludes by advocating that creativity concepts of decision making, problem solving, originality, imaginativeness, ingenuity, adaptation and resourcefulness should be applied to design studio mentoring and assessment
How Creativity Manipulates Nature and Space to Produce Architecture
Architecture has always been meant to solve problems by satisfying the enduser emotionally, psychologically or physiologically. This is why architecture is seen as a product of a way of thinking and creativity which requires manipulation of space and nature as source of inspiration and tools to relate with in order to solve problems. This paper examines architecture as a product of creativity through the manipulation of space and nature. It further explains the importance of space and natural elements as source of inspiration and interaction for architecture. Methodology of study is qualitative approach using the data collection techniques of archival documents, observation, and typological analysis of buildings / works of some renowned architects as well as content analysis of selected literatures on the subject matter. Findings reveals that architecture built on effective manipulated space and nature inspired structures affect the total wellbeing of humans, people‟s perception of the built environment and the beauty to behold and iconic. The study also reveals that creativity is an important asset in the practice of architecture
Factors Affecting Architectural Design for Crime in Nigeria: Role of the Architect
It has been acknowledged by researchers and practitioners of crime prevention that design is an important tool that could be used to prevent crime and reduce fear of crime while increasing sense of community. However, the architect faces several challenges in the attempt to address crime prevention issues in his design. This paper assessed the factors that hinder architects in Nigeria from addressing issues of crime prevention holistically in their designs. Survey research method was adopted for the study. 132 questionnaires were administered to architects in Akwa Ibom and Cross River States of Nigeria. 87 properly filled and returned questionnaires were used for the study. Percentages and mean score analysis and ranking method were used as the analysis tools. Interviews were also carried out with key architects with 12 to 37 years of practice experience. The result revealed the major hindrances to architectural design for crime prevention to include lack of documented examples and no crime prevention requirements in planning and building regulations in Nigeria among others. These factors are knowledge related. This suggests that knowledge has a significant and positive effect on architectural design for crime prevention as it helps architects to take good and informed design decisions. It notes that documented examples have three major functions namely, knowledge sharing, knowledge transfer and knowledge preservation. The paper concluded that these factors affect the ability of architects to design against crime because architectural design is knowledge dependent and knowledge driven. It recommended that physical security concepts and crime prevention through environmental design should be made part of formal architectural education raining and/or professional continuing development programme in Nigeria
Activation of STAT signaling pathways and induction of suppressors of cytokine signaling (SOCS) proteins in mammalian lens by growth factors
PURPOSE. This study was conducted to examine whether the effects of growth factors are mediated in the lens by Janus kinase/signal transducers and activators of transcription (JAK/ STAT) pathways and whether they induce expression of suppressors of cytokine signaling (SOCS), a novel family of feedback regulators of cytokine and growth factor activities. METHODS. STAT activation and SOCS expression were analyzed in transgenic or wild-type mouse lens and lens epithelial cells stimulated with growth factors by immunohistochemistry, RT-PCR, Northern, Western, proliferation, or transient reporter assays. RESULTS. STATs were constitutively expressed at low levels and activated by insulin-like growth factor (IGF)-1, platelet-derived growth factor (PDGF)-aa, and FGF-1 or -2 in the lens. The Intensity of STAT signaling increased at high FGF-2 concentration and FGFs act in synergy with IGF-1 or PDGFaa to enhance STAT signaling and SOCS expression. Growth factor-induced proliferation of lens cells is inhibited by AG-490, a specific inhibitor of JAK2/STAT3. CONCLUSIONS. This is the first report that FGFs activate STAT pathways in the lens and that SOCS proteins are constitutively expressed and upregulated by growth factors in this tissue. Physiological relevance of STAT pathways in the lens is underscored by inhibition of lens cell proliferation by inhibitors of JAK/STAT pathways and by the aberrant proliferation of lens epithelium in the posterior pole of transgenic mice with constitutively activated STAT1 in the lens. Common activation of STAT pathways by FGF-1, FGF-2, IGF-1, or PDGFaa and their synergistic activation of STATs and SOCS in lens cells suggest that activities and crosstalk between these factors are sensitive to the steady state levels of activated STATs in the lens and may be under feedback regulation by SOCS family proteins. (Invest Ophthalmol Vis Sci
Calcitonin Gene-Related Peptide Partially Reverses Decreased Production of Chemokines KC and MIP-2 Following Murine Sepsis
The secretion of calcitonin gene-related peptide (CGRP) and the chemokines KC and MIP-2 are increased in the animal models of endotoxemic and septic shock. We tested whether CGRP could modulate KC and MIP-2 secretion from different sources of macrophages after murine sepsis induced by cecal ligation and puncture (CLP). Macrophages were obtained from the peritoneal exudate and lung of female BALB/c mice 16 h after CLP and plated in culture with CGRP and/or LPS for 12 h. The results showed that peritoneal macrophage production of the chemokines (KC, MIP-2) and cytokines (TNF-α, IL-6) was markedly decreased in CLP mice. Alveolar macrophages did not display decreased cytokine/chemokines production after CLP. CGRP (0.1 nM–10 nM) partially reversed this decreased production of LPS-induced KC and MIP-2 from peritoneal macrophages. These results suggest that CGRP might be intimately involved in recruitment of neutrophils by promoting local production of the chemokines KC and MIP-2 in murine sepsis.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/44531/1/10753_2004_Article_376569.pd
East Africa International Center of Excellence for Malaria Research: Impact on Malaria Policy in Uganda
Malaria is the leading cause of disease burden in sub-Saharan Africa. In 2010, the East Africa International Center of Excellence for Malaria Research, also known as the Program for Resistance, Immunology, Surveillance, and Modeling of Malaria (PRISM), was established to provide a comprehensive approach to malaria surveillance in Uganda. We instituted cohort studies and a robust malaria and entomological surveillance network at selected public health facilities that have provided a platform for monitoring trends in malaria morbidity and mortality, tracking the impact of malaria control interventions (indoor residual spraying of insecticide [IRS], use of long-lasting insecticidal nets [LLINs], and case management with artemisinin-based combination therapies [ACTs]), as well as monitoring of antimalarial drug and insecticide resistance. PRISM studies have informed Uganda's malaria treatment policies, guided selection of LLINs for national distribution campaigns, and revealed widespread pyrethroid resistance, which led to changes in insecticides delivered through IRS. Our continuous engagement and interaction with policy makers at the Ugandan Ministry of Health have enabled PRISM to share evidence, best practices, and lessons learned with key malaria stakeholders, participate in malaria control program reviews, and contribute to malaria policy and national guidelines. Here, we present an overview of interactions between PRISM team members and Ugandan policy makers to demonstrate how PRISM's research has influenced malaria policy and control in Uganda
The impact of stopping and starting indoor residual spraying on malaria burden in Uganda.
The scale-up of malaria control efforts has led to marked reductions in malaria burden over the past twenty years, but progress has slowed. Implementation of indoor residual spraying (IRS) of insecticide, a proven vector control intervention, has been limited and difficult to sustain partly because questions remain on its added impact over widely accepted interventions such as bed nets. Using data from 14 enhanced surveillance health facilities in Uganda, a country with high bed net coverage yet high malaria burden, we estimate the impact of starting and stopping IRS on changes in malaria incidence. We show that stopping IRS was associated with a 5-fold increase in malaria incidence within 10 months, but reinstating IRS was associated with an over 5-fold decrease within 8 months. In areas where IRS was initiated and sustained, malaria incidence dropped by 85% after year 4. IRS could play a critical role in achieving global malaria targets, particularly in areas where progress has stalled
The evolving SARS-CoV-2 epidemic in Africa: Insights from rapidly expanding genomic surveillance
INTRODUCTION
Investment in Africa over the past year with regard to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) sequencing has led to a massive increase in the number of sequences, which, to date, exceeds 100,000 sequences generated to track the pandemic on the continent. These sequences have profoundly affected how public health officials in Africa have navigated the COVID-19 pandemic.
RATIONALE
We demonstrate how the first 100,000 SARS-CoV-2 sequences from Africa have helped monitor the epidemic on the continent, how genomic surveillance expanded over the course of the pandemic, and how we adapted our sequencing methods to deal with an evolving virus. Finally, we also examine how viral lineages have spread across the continent in a phylogeographic framework to gain insights into the underlying temporal and spatial transmission dynamics for several variants of concern (VOCs).
RESULTS
Our results indicate that the number of countries in Africa that can sequence the virus within their own borders is growing and that this is coupled with a shorter turnaround time from the time of sampling to sequence submission. Ongoing evolution necessitated the continual updating of primer sets, and, as a result, eight primer sets were designed in tandem with viral evolution and used to ensure effective sequencing of the virus. The pandemic unfolded through multiple waves of infection that were each driven by distinct genetic lineages, with B.1-like ancestral strains associated with the first pandemic wave of infections in 2020. Successive waves on the continent were fueled by different VOCs, with Alpha and Beta cocirculating in distinct spatial patterns during the second wave and Delta and Omicron affecting the whole continent during the third and fourth waves, respectively. Phylogeographic reconstruction points toward distinct differences in viral importation and exportation patterns associated with the Alpha, Beta, Delta, and Omicron variants and subvariants, when considering both Africa versus the rest of the world and viral dissemination within the continent. Our epidemiological and phylogenetic inferences therefore underscore the heterogeneous nature of the pandemic on the continent and highlight key insights and challenges, for instance, recognizing the limitations of low testing proportions. We also highlight the early warning capacity that genomic surveillance in Africa has had for the rest of the world with the detection of new lineages and variants, the most recent being the characterization of various Omicron subvariants.
CONCLUSION
Sustained investment for diagnostics and genomic surveillance in Africa is needed as the virus continues to evolve. This is important not only to help combat SARS-CoV-2 on the continent but also because it can be used as a platform to help address the many emerging and reemerging infectious disease threats in Africa. In particular, capacity building for local sequencing within countries or within the continent should be prioritized because this is generally associated with shorter turnaround times, providing the most benefit to local public health authorities tasked with pandemic response and mitigation and allowing for the fastest reaction to localized outbreaks. These investments are crucial for pandemic preparedness and response and will serve the health of the continent well into the 21st century
How Creativity Manipulates Nature and Space to Produce Architecture
Architecture has always been meant to solve problems by satisfying the enduser emotionally, psychologically or physiologically. This is why architecture is seen as a product of a way of thinking and creativity which requires manipulation of space and nature as source of inspiration and tools to relate with in order to solve problems. This paper examines architecture as a product of creativity through the manipulation of space and nature. It further explains the importance of space and natural elements as source of inspiration and interaction for architecture. Methodology of study is qualitative approach using the data collection techniques of archival documents, observation, and typological analysis of buildings / works of some renowned architects as well as content analysis of selected literatures on the subject matter. Findings reveals that architecture built on effective manipulated space and nature inspired structures affect the total wellbeing of humans, people‟s perception of the built environment and the beauty to behold and iconic. The study also reveals that creativity is an important asset in the practice of architecture
Optimizing bio-physical conditions and pre-treatment options for breaking lignin barrier of maize stover feed using white rot fungi
The greatest limitation to utilization of maize stover by ruminants as a feed is the high concentration of lignin, which limits fibre digestibility. However, ruminants can effectively utilize maize stover if its nutritive value is improved using white rot fungal species. This study was designed to determine optimal bio-physical conditions for mycelial growth and select the most ideal fungal species and pre-treatment options for improving nutritive value of maize stover. Four popular edible Pleurotus fungal species (viz. Pleurotus florida, Pleurotus ostreatus, Pleurotus sajor caju and Pleurotus pulmonarius) were subjected to varying temperatures, pH levels, hydrogen peroxide (H2O2) concentration and illumination to establish the extent of mycelial growth rate. Inclusion of H2O2 was used to determine optimal levels for preservation and prevention of contamination from other indigenous microbiota. Effects of pre-treatment options on chemical composition and nutritive value of maize stover were also examined. Mycelial growth rate of Pleurotus species on potato dextrose agar (PDA) varied (P < 0.05) with temperature, pH level and H2O2 concentration following a quadratic trend. Optimal temperature, pH and H2O2 concentration for mycelial growth on PDA were 25 °C, 5 and 0.01 mL/L, respectively. Under the different bio-physical conditions, P. sajor caju had the highest mycelia density and growth rate. Chemical composition of solid-state fermented maize stover differed (P < 0.05) among the Pleurotus species. Maize stover fermented with P. sajor caju had the highest crude protein (CP) of 86.6 g/kg DM, in-vitro dry matter digestibility (IVDMD) of 731 g/kg DM, in-vitro organic matter digestibility (IVOMD) of 670.4 g/kg DM and metabolizable energy (ME) of 10.0 MJ/kg DM but with the lowest lignin (sa) of 50 g/kg DM. At 25 °C, P. sajor caju had the highest mycelial growth rate on PDA and highest lignin (sa) breakdown in the maize stover substrate. It was, therefore, selected as the most ideal fungal species for improving nutritive value of maize stover. Pre-treatment of maize stover with Lactobacillus plantarum and molasses under anaerobic condition for 7 days before inoculation with P. sajor caju resulted into a substrate with the highest (P < 0.05) CP (96.6 g/kg DM), IVDMD (752.3 g/kg DM), IVOMD (687.2 g/kg DM) and ME (10.2 MJ/kg DM). However, neutral detergent fiber exclusive of residual ash (NDFom) and lignin (sa) fractions decreased (P < 0.05) as a result of subjecting maize stover to pre-treatment with L. plantarum and molasses prior to fermentation with P. sajor caju. Therefore, pre-treatment of maize stover with L. plantarum and molasses for 7 days prior to fermentation with P. sajor caju for 14 days in darkness at 25 °C offered the greatest potential for breaking the lignin barrier