The study evaluates the level of mechanisation and its sustainability, the relationship between mechanisation and its sustainability and between mechanisation and project outcome. To achieve these, a ...field survey involving a sample of eighty projects was conducted with the aid of questionnaires. Data were collected on the production methods adopted in excavation and concreting, whether or not the use of plant for the operations were sustainable and the initial and actual delivery time and cost of the projects sampled. The data were analysed using ranking, mean, t-test and Spearman correlation test. The study reveals that the levels of mechanisation and sustainability of mechanisation in the two operations are slightly above average. It also reveals that the level of sustainability of mechanisation has significant influence the level of mechanisation while of mechanisation has significant influence on quality standards and productivity. The study concludes that there is a strong need for measures that will improve the level of mechanisation and its sustainability in the industry and recommend the introduction of plant mobilisation fund by clients, incentives on importation of construction plant and an effective and functional lease market for construction plant as some of the measures that will improve mechanised construction.
In this insightful book, development historian Bekeh Utietiang Ukelina addresses the crisis of development in Africa by locating it in its colonial historical past. Using Nigeria as a case study, he ...argues that the nature and practice of British colonialism in this colony created social and economic deficiencies that have left a legacy of underdevelopment. Ukelina outlines the processes that led to the 1945 Nigerian Development Plan and the evolution of colonial agricultural policy and practices in Nigeria. He argues that a few key factors led to the failure of development in the late colonial period: the imperial and neocolonial imperative to exploit African resources and people, poor planning as a result of this imperative, and the racial ideologies of the colonial state that resulted in a total rejection of local African experience and knowledge in favor of Western 'experts.' The Second Colonial Occupation uncovers and analyzes the short and long term impact of colonialism. It reveals that though colonial rule was promoted as a benevolent mission, at heart, it was a system that guaranteed that Africans continuously paid for their own exploitation. Ukelina argues that 'postcolonial' Africa will continue to face development challenges unless it breaks free from the intellectual relics of colonial rule and the economic shackles of neocolonialism.
The subject of the book is about attitudes and reactions to different kinds of disabilities as well as remediation policies in Nigeria. It covers a number of areas including disabilities studies, ...education and philosophy of education.
Combined together in three volumes are the author's writings on labour and employments relations in Nigeria spanning over three and a half decades. Volume one covers the Nigerian industrial relations ...industrial relations institutional and legal framework, trade unions and trade unionism, wage bargains and conflict relations.
This study compares the levels of planning and the outcome of projects procured by direct labour and traditional contract procurement options. For this comparison, a survey of 130 projects was ...carried out. Data were collected using structured questionnaires and analysed using percentage, mean and t-test. The study discovers that whereas the levels of conception and overall planning done in projects procured by the two options are the same, the levels of design and construction planning done in DBB and DL projects differ. The study also discovers that the time-overruns of projects procured by the two methods differ but their cost-overruns are the same. The study concludes that projects procured by DBB and DL options differ in planning and time-overrun and suggests improved planning at the design stage when DL option is adopted and improved planning at the construction stage when DBB option is adopted.
A conceptual model examining job embeddedness as a mediator of the impact of perceived ethical climate on job performance and extra-role customer service is developed and tested. Data obtained from ...frontline hotel employee-supervisor dyads in Nigeria were used to assess these relationships via structural equation modeling. The results suggest that job embeddedness fully mediates the effect of perceived ethical climate on frontline employees' performance outcomes. Specifically, employees with favorable perceptions of the firm's ethical climate are embedded in their jobs. Such employees in turn display elevated levels of job performance and extra-role customer service behaviors. Implications of the results are discussed and their implications for future research are offered.
Phenotypic variation present in a population arises due to genotypic and environmental effects, and the magnitude of phenotypic variability differs under different environmental conditions, ...therefore, the purpose of this study was to objectively describe the linear type traits of extensively managed mature indigenous goats of Southern Nigeria and to predict body weight from their orthogonal shape characters using principal component analysis. Body weight and four body measurements namely, height at withers, neck length, body length and heart girth were measured in 265 randomly selected West African Dwarf (WAD) and Red Sokoto (RS) goats of both sexes. RS goats had significantly (P < 0.05) higher morphological traits compared to their WAD counterparts. Sexual dimorphism was observed in all the traits with higher values recorded for males. Phenotypic correlations among body weight and biometric traits were positive and highly significant (r = 0.76-0.91 versus 0.82-0.97 and 0.66-0.94 versus 0.83-0.91 for WAD and RS female and male goats, respectively). In the varimax rotated principal component factor analysis, two factors were extracted for each sex of the two breeds, although with varying degrees of factor loadings. The principal component based regression models, which are preferable for selecting animals for optimal balance, accounted for 89.00 and 96.00% as well as 81.00 and 91.00% of the variation in body weight of female and male WAD and RS goats, respectively. The information obtained could be useful in designing appropriate management, selection and breeding programmes for utilization of goat genetic resources.
Fenotipska variabilnost v populaciji je pogojena z delovanjem genetskih in okoljskih dejavnikov. Ker je obseg fenotipske variabilnosti različen v različnih okoljih, smo skušali v tej študiji objektivno predstaviti linearne eksterierne lastnosti ekstenzivno vzrejanih avtohtonih koz v južni Nigeriji in z analizo glavnih komponent napovedati telesno maso na osnovi lastnosti, ki opredeljujejo njihovo telesno obliko. Izmerili smo telesno maso in štiri telesne mere (višina v vihru, dolžina vratu, dolžina trupa in obseg prsi) pri 265 naključno izbranih zahodno afriških pritlikavih kozah (West African Dwarf, WAD) in rdečih sokoto kozah (Red Sokoto, RS) obeh spolov. Vrednosti za merjene lastnosti so bile pri RS kozah statistično značilno (p < 0,05) večje kot pri WAD kozah. Spolni dimorfizem smo zabeležili pri vseh lastnostih, z večjimi vrednostmi za samce. Fenotipske korelacije med telesno maso in biometričnimi lastnostmi so bile pozitivne in statistično visoko značilne (r = 0,76-0,91 in 0,82-0.97 ter 0,66-0,94 in 0,83-0,91 za WAD in RS živali ženskega ter moškega spola). S faktorsko analizo z Varimax rotacijo smo za vsako od obeh pasem in vsak spol dobili po dva faktorja. Regresijski modeli, ki temeljijo na analizi glavnih komponent in so primerni za selekcijo živali, so pojasnili 89,00 in 96,00 %, ter 81,00 in 91,00 % variance telesne teže ženskih in moških živali pasem WAD in RS. Zbrane informacije bodo uporabne pri upravljanju, selekciji in načrtovanju rejskih programov za boljše izkoriščanje genskih virov pri kozah.
This book explores the theory and practice of security conflict intervention by examining the Boko Haram security conflict. It provides pragmatic approaches to strategic security and suggests ways to ...enact political controls, military and police mobilization, intelligence management, and counterterrorism procedures to sustainably resolve conflict.
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