Bus Rapid Transit Systems as a Governance Reform Project

Bus Rapid Transit systems exist in over 206 cities and 45 countries around the world. They are seen to provide a much lower cost option of mass mobility than fixed rail or underground systems which developing countries struggle to afford. Whilst BRT systems have undoubtedly been seen to be successful from a transport system perspective, they are more than a transport system innovation. They are often introduced to replace what is seen to be a failing, unsafe and poorly regulated informal transit system. This paper therefore focuses on the process of BRT introduction as a governance reform. The paper draws on African experience where adoption of BRT has been slow relative to South America and South East Asia. Using an in-depth analysis of the introduction of a new system in Ghana and data on levels of governance maturity across the African sub-continent, the paper finds that to understand BRT implementation requires an understanding of how the incumbent transport regime could and will be able to be reorganized. The success of BRT systems that result will depend at least as much on how the reforms are achieved as it will on the usual design concerns which typically occupy transport planners

The determinants of demand for public transport services in Kumasi, Ghana

The objective of the study was to establish the major factors influencing demand as well as develop a demand model for urban passenger transport services in Kumasi, Ghana. Data for this study were obtained from 400 commuters grouped into strata with definite characteristics such as income levels and trip making characteristics using the framework defined by Department of Urban Roads during two main field surveys using the simple random sampling technique. The analysis of the data showed that key determinants such as employment status of commuters, trip duration, and population influence the demand for public transport services in Kumasi. In addition, it was found that Taxi is the dominant mode used in Kumasi,  carrying about 44% of respondents. This is mainly because it is the fastest mode in the city. The minibus is the next patronised mode carrying 32% of the respondents while Metro Mass Transit buses were the least patronised, even though they have the capacity to carry more passengers. This is mainly because of the long travel time these buses offer to passengers. The study therefore recommends among others, the use of large  occupancy vehicles by providing them with exclusive lanes to help reduce travel time to make them the preferred option of commuters.Keywords: Demand, Passenger Transport Services, Public Transport, Passenger-kilometre

Colour and Architecture: An Empirical Study of a New Paradigm of Painting of Residential Buildings and Ownership in Kumasi

Colours have been classically used to inspire taste in architecture from antiquity. Colours provide ‘joie de vivre’ (joy of life). However, a cursory observation reveals a noticeable trend in Ghana where residential buildings are receiving paints and colour notations of multinational companies. This paper presents empirical research on colour through multiple methodological approaches and tactics. The research findings presented in this paper used Kumasi, the Capital of the Ashanti Region of Ghana as main case study area. The data analysis of findings revealed that about seventy-five percent of the houses painted in multinational companies’ colours along major arterial roads in Kumasi were approached for advertisement purposes. In addition, the owners of the sampled houses chose to paint with a particular colour for a mark of distinction and monetary reasons. This paper concludes that the companies’ objectives were adhoc and were not guided by any planned scheme as required to enhance the sensibility and aesthetic appeals through the use of colour for buildings and their genus loci in an urban environment. The paper recommends revisions to the current Ghana National Building Regulations of 1996 – The Legislative Instruments 1630 to recognize the importance of colour aesthetics in city environments. Keywords: Company colour and paint, Architecture, Incentivization, Building regulations, Kumasi-Ashant

Developing Novel Prognostic Biomarkers for Multivariate Fracture Risk Prediction Algorithms

Multivariate prediction algorithms such as FRAX® and QFracture Scores provide an opportunity for new prognostic biomarkers to be developed and incorporated, potentially leading to better fracture prediction. As more research is conducted into these novel biomarkers, a number of factors need to be considered for their successful development for inclusion in these algorithms. In this review, we describe two well-known multivariate prediction algorithms for osteoporosis fracture risk applicable to the UK population, FRAX and QFracture Scores, and comment on the current prognostic tools available for fracture risk; dual X-ray assessment, quantitative ultrasonography, and genomic/biochemical markers. We also highlight the factors that need to be considered in the development of new biomarkers. These factors include the requirement for prospective data, collected in new cohort studies or using archived samples; the need for adequate stability data to be provided; and the need for appropriate storage methods to be used when retrospective data are required. Area under the receiver operating characteristic curve measures have been found to have limited utility in assessing the impact of the addition of new risk factors on the predictive performance of multivariate algorithms. New performance evaluation measures, such as net reclassification index and integrated discrimination improvement, are increasingly important in the evaluation of the impact of the addition of new markers to multivariate algorithms, and these are also discussed. © Springer Science+Business Media, LLC 2012

Diorama Art – A Potential Medium For Museum Educationm

The study recognizes the traditional role diorama plays as an effective medium for museum education and employed both descriptive and experimental methods to produce a diorama to popularize it for the Ghanaian populace. It explored the use of non-traditional modelling material (corn shucks and cobs) in the preparation of diorama. The results of the study  indicate that corn shucks and cobs which have less use in our environment as raw materials can be used as modelling medium to produce sculpture. As such other unconventional materials could be explored for modelling in order to open more avenues to sculptors. Besides, diorama could be a minimuseum, a potent tool to keep proper records, document valuable cultural and historic information to inspire and educate the public; as well as a way of building museums on school campuses to expand classroom teaching and learning.Keywords: Diorama, Museum, Education, Aperture, Assemblage

Clinical Risk Factors for Osteoporosis in Ireland and the UK: A Comparison of FRAX and QFractureScores

Recently two algorithms have become available to estimate the 10-year probability of fracture in patients suspected to have osteoporosis on the basis of clinical risk factors: the FRAX algorithm and QFractureScores algorithm (QFracture). The aim of this study was to compare the performance of these algorithms in a study of fracture patients and controls recruited from six centers in the United Kingdom and Ireland. A total of 246 postmenopausal women aged 50-85 years who had recently suffered a low-trauma fracture were enrolled and their characteristics were compared with 338 female controls who had never suffered a fracture. Femoral bone mineral density was measured by dual-energy X-ray absorptiometry, and fracture risk was calculated using the FRAX and QFracture algorithms. The FRAX algorithm yielded higher scores for fracture risk than the QFracture algorithm. Accordingly, the risk of major fracture in the overall study group was 9.5% for QFracture compared with 15.2% for FRAX. For hip fracture risk the values were 2.9% and 4.7%, respectively. The correlation between FRAX and QFracture was R = 0.803 for major fracture and R = 0.857 for hip fracture (P ≤ 0.0001). Both algorithms yielded high specificity but poor sensitivity for prediction of osteoporosis. We conclude that the FRAX and QFracture algorithms yield similar results in the estimation of fracture risk. Both of these tools could be of value in primary care to identify patients in the community at risk of osteoporosis and fragility fractures for further investigation and therapeutic intervention. © 2011 Springer Science+Business Media, LLC

Systematics and historical biogeography of the old world butterfly subtribe Mycalesina (Lepidoptera: Nymphalidae: Satyrinae).

BACKGROUND: Butterflies of the subtribe Mycalesina have radiated successfully in almost all habitat types in Africa, Madagascar, the Indian subcontinent, Indo-China and Australasia. Studies aimed at understanding the reasons behind the evolutionary success of this spectacular Old World butterfly radiation have been hampered by the lack of a stable phylogeny for the group. Here, we have reconstructed a robust phylogenetic framework for the subtribe using 10 genes from 195 exemplar taxa. RESULTS: We recovered seven well supported clades within the subtribe corresponding to the five traditional genera (Lohora, Heteropsis, Hallelesis, Bicyclus, Mycalesis), one as recently revised (Mydosama) and one newly revised genus (Culapa). The phylogenetic relationships of these mycalesine genera have been robustly established for the first time. Within the proposed phylogenetic framework, we estimated the crown age of the subtribe to be 40 Million years ago (Mya) and inferred its ultimate origin to be in Asia. Our results reveal both vicariance and dispersal as factors responsible for the current widespread distribution of the group in the Old World tropics. We inferred that the African continent has been colonized at least twice by Asian mycalesines within the last 26 and 23 Mya. In one possible scenario, an Asian ancestor gave rise to Heteropsis on continental Africa, which later dispersed into Madagascar and most likely back colonised Asia. The second colonization of Africa by Asian ancestors resulted in Hallelesis and Bicyclus on continental Africa, the descendants of which did not colonise other regions but rather diversified only in continental Africa. The genera Lohora and Mydosama are derivatives of ancestors from continental Asia. CONCLUSION: Our proposed time-calibrated phylogeny now provides a solid framework within which we can implement mechanistic studies aimed at unravelling the ecological and evolutionary processes that culminated in the spectacular radiation of mycalesines in the Old World tropics

Conserved patterns of integrated developmental plasticity in a group of polyphenic tropical butterflies

Background: Developmental plasticity is thought to have profound macro-evolutionary effects, for example, by increasing the probability of establishment in new environments and subsequent divergence into independently evolving lineages. In contrast to plasticity optimized for individual traits, phenotypic integration, which enables a concerted response of plastic traits to environmental variability, may affect the rate of local adaptation by constraining independent responses of traits to selection. Using a comparative framework, this study explores the evolution of reaction norms for a variety of life history and morphological traits across five related species of mycalesine butterflies from the Old World tropics. Results: Our data indicate that an integrated response of a suite of key traits is shared amongst these species. Interestingly, the traits that make up the functional suite are all known to be regulated by ecdysteroid signalling in Bicyclus anynana, one of the species included in this study, suggesting the same underlying hormonal regulator may be conserved within this group of polyphenic butterflies. We also detect developmental thresholds for the expression of alternative morphs. Conclusions: The phenotypic plasticity of a broad suite of morphological and life history traits is integrated and shared among species from three geographically independent lineages of mycalesine butterflies, despite considerable periods of independent evolution and exposure to disparate environments. At the same time, we have detected examples of evolutionary change where independent traits show different patterns of reaction norms. We argue that the expression of more robust phenotypes may occur by shifting developmental thresholds beyond the boundaries of the typical environmental variation