Conceptual model of client health and safety (H&S) culture

Purpose: This paper presents a conceptual six factor client H&S culture model referred to as the LIP+3C. The factors leadership, involvement, procedures, commitment, communication and competence were theorised to explain the client H&S culture construct. The postulated model is based on theory obtained from literature as well as from a Delphi research. H&S culture has been recognised as the feasible way to improve H&S performance in the construction industry. Design/methodology/approach: A Delphi study as well as a synthesis of literature was conducted and resulted in a theorised conceptual model. To validate the model, a questionnaire survey with a response of 281 was conducted. Findings from the questionnaire survey were analysed using Structural Equation Modelling (SEM) with EQS version 6.1 software. Findings: The six factor client H&S culture model was found to be well fitting to the sample data through the confirmatory factor analysis. Consequently client H&S culture findings were that client culture could be explained by the level of leadership, involvement, procedures, commitment, communication and competence. Research limitations/implications: The size of the sample may affect the generalisability the findings in view of the complexity of the model. Practical implications: The proposed model in this study makes it possible to determine and predict the client H&S culture. The indicator variables can be used as check items for performance measurement and thus operationalize the concept of H&S culture. Originality/value: Adopting the LIP+3C culture model composed of elements that can easily be implemented and understood will contribute to improving the current H&S statu

Cost efficiency of small-scale commercial broiler production in Zambia: A stochastic cost frontier approach

Over the last two decades Zambia has experienced a rapid growth in poultry production and a large share of broiler meat production has been contributed by small scale urban producers. This study aims to estimate the economies of scale and cost efficiency of small scale broiler farmers in Zambia using a Cobb-Douglas cost function and the inefficiency effects model.  Data were collected from 90 small scale broiler farmers in the city of Lusaka selected using a snowball sampling method. The results show that cost efficiency scores ranged from 0.76 to 0.99 with a mean of 0.958. The frequency distribution indicate that cost efficiency scores for 10% of the farmers were between 0.78 and 0.89 and the majority (90%) the scores were between 0.9 and 0.99. Thus, most small scale broiler farmers were highly cost efficient in broiler production. For a farmer with the minimum efficiency, she/he could make cost savings of about 24% and yet produce the same level of output using the available technology.  The cost inefficiency significantly decreased with age, education and poultry training. Policy implications are that government should encourage young people be efficient poultry producers, enhance farmer’s level of education, training on poultry rearing skills including feeds and feeding since feed is a major determinant of broiler production cost. This can be achieved through short term trainings and extension services arranged during weekends and holidays to allow small scale poultry keepers with full-time jobs to participate. The analysis of scale effects found that the small scale broiler farmers were experiencing positive economies of scale and were in stage I and thus a need exists to move them to the more efficient stage II, through increased production of birds and efficient use of feeds. Key words: Broiler, stochastic frontier model, cost efficiency

Identifying factors of health and safety (H&S) culture for the construction industry

Construction H&S performance improvement has in recent years become a priority and thus has gained industry-wide attention (Cheung et al, 2004 and Hamalainen et al, 2009) because of the economic benefits, the need to improve construction industry image, the need for organisations to be socially responsible and the need for an improved general regard and respect for people working in the construction industry. In addition, the legislative pressure coupled with debate concerning the personal responsibility that senior managers should bear for their organisations on H&S failures (Fitzgerald, 2005) has contributed to most organisations to focus on H&S improvement. However improving H&S performance in the construction industry has also proved to be somewhat challenging partly due to the industryʼs complex nature. Despite this complexity of the industry, H&S performance improvement remains a crucial issue and its importance or need has been demonstrated in numerous studies (Smallman and John, 2001; Lee et al, 2006; ILO, 2003; and Hoonakker et al, 2005)

A correlation study of nutrition and factors influencing food choices among construction workers

Abstract: Nutrition is known to be linked with worker health and safety (H&S) performance. Literature suggests that construction workers have poor nutrition and this adversely affects their health, wellbeing and safety on construction sites. Strategies to improve their nutrition warrant considerable attention. This paper aims to identify significant relationships between factors influencing nutrition and the food choices of construction workers. Empirical data for the correlational study were collected through a field questionnaire survey on site construction workers in the Gauteng Province of South Africa. Principal components analysis and Pearson‘s correlation analysis were conducted. Findings revealed that food context, nutritional knowledge, resources and personal ideas and systems were significantly associated with choice of foods. By highlighting the factors which are correlated with nutritional choices amongst construction workers, the study provides valuable evidence which will allow for the development and implementation of efficient and successful intervention programs geared towards improving construction workers' nutrition and thus site safety performance

Identifying factors influencing construction workers’ food choices in Gauteng, South Africa: A pilot investigation

Abstract: Background: Nutrition is linked with health and safety performance of workers. However, there is scant literature focusing on the nutrition of construction workers, especially in South Africa. Methods: This pilot study investigated the factors that influence the nutrition of construction workers. A survey was conducted and data were analysed using Microsoft Excel to determine mean scores and to rank the factors. Results: Nutritional knowledge, economic factors and physiological factors were identified as influencing construction workers’ food choices. Conclusion: These findings provide information that can be used for targeting construction workers’ nutrition which could, in turn, improve health and safety performance on construction sites. Identifying nutrition-influencing factors allows for the design of intervention programmes for construction workers

Development of a scale for assessing determinants of construction workers’ food choices

Abstract: Research on the factors influencing construction workers’ food choices and overall nutrition is limited, in South Africa and indeed Africa. The aim of the present paper is to develop and validate a questionnaire of factors influencing construction workers’ food choices. A quantitative, purposive approach was used in the study. Fourty-two items, divided into six constructs, were used to develop a field survey questionnaire after an extensive literature review. Principal components analysis (PCA) was conducted to examine the structures and validity of the constructs. Cronbach’s alpha test and mean inter-item correlations were used to examine internal consistency reliability. After repeated factor analysis, the questionnaire of food choice factors revealed seven different factors: food context, biological factors, nutritional knowledge, personal ideas and systems, economic factors, resources and cultural background. These factors explained 60.09% variance. Cronbach’s alpha coefficients ranged from 0.62 to 0.85, indicating good internal consistency reliability. The factors which influence construction workers’ food choices are important considerations when designing and implementing nutrition interventions in the South African construction industry. Future research can adopt the instrument when conducting psychometric assessments of construction workers’ food choices

Relationship between nutrition and construction safety performance : experimental work

Abstract: It is known that nutrition is linked with worker health and safety (H&S) performance. However, this relationship has not been evaluated empirically. The present paper evaluates the relationship between nutrition and safety performance on construction sites. Empirical data were collected through a field questionnaire survey conducted on site construction workers in South Africa. Principal components analysis and Spearman’s correlation analysis were used to analyze the data. Findings revealed that increased consumption of certain foods termed “alternatives” in the current study, including dairy products, eggs, nuts, fish and cereals, was associated with improved safety performance. No significant correlation was found between nutritional choice and negative performance measures. By providing evidence of which foods may be correlated with safety performance of construction workers on construction sites, the design of explicit nutrition interventions for construction workers, particularly including planning for these significant foods, will be allowed. The study will also result in nutrition being given more attention in H&S considerations on construction sites

Developing a framework of food choice determinants among construction workers in South Africa

Abstract: A plethora of factors are known to influence an individual’s food choice and overall nutrition, which in turn, influences their health and safety performance. However, it appears that little research has been conducted in South Africa, on the factors which influence the food choices and intake of construction workers in particular. The paper develops a framework of food choice determinants from literature review and tests the framework using principal components analysis of empirical data from a field questionnaire survey. Results evinced that food choices among South African construction workers aredeterminable by seven factors as opposed to six theorized factors. The study provides evidence which defines the factors that influence construction workers’ food choice. The study will be useful to construction managers and stakeholders in planning for nutrition improvement in the construction industry. Improving nutrition will contribute to improvement in health and safety performance on construction sites

Application of multicomponent reactions to antimalarial drug discovery. Part 3: discovery of aminoxazole 4-aminoquinolines with potent antiplasmodial activity in vitro.

The synthesis and antimalarial activity of a novel series of first generation 4-aminoquinoline-containing 2,4,5-trisubstituted aminoxazoles against two strains of the Plasmodium falciparum parasite in vitro is described. A number of compounds significantly more potent than the standard drug chloroquine were identified

SUSTAINABILITY IN RETAIL BUILDINGS: A CASE STUDY OF SHOPPING MALLS IN LAGOS STATE

This study investigates with empirical data, the influence of supply chain management practices on building development projects undertaken by estate firms in Lagos State. Structured questionnaires were administered to principal officers of the 200 firms of estate surveying and valuation in the state while 136 were returned completed constituting 68.0% rate of response. Uni-variate analysis was performed to present the profile of the respondents while further analysis carried out with correlation regression analysis. Pearson correlation coefficient was used to establish the relationship among the aspects of SCM practices and efficiency of the firms while linear regression analysis was used to investigate the strength of the relationships. Results revealed that the p-value of the independent variables are all less than 0.05, signifying that these variables are all significant to SCM practices, hence the efficiency of the firms. Moreover, the correlation coefficient indicates a varying degree of positive and direct relationship between the SCM aspects and productivity. The results of the regression analysis showed among others that although the six integral components of the SCM practices are all significant, only the primary supply chain and human resource supply chain currently have the highest contributory capacity (61.8% and 54.4% respectively) to the firms’ productivity while the ICT, finance and payment, mutual trust among stakeholders each had less or weak impact on the firms’ productivity. The study concluded by suggesting that estate firms strengthen these aspects of the firms’ SCM practices to improve productivity