Search results

Ramadan intermittent fasting (RIF) has produced heterogeneous and domain-specific effects on cognitive function. This study aims to investigate the effect of RIF on verticality perception or estimation of subjective visual vertical (SVV) in young adults. The significance of SVV is that it is essential for spatial orientation, upon which many daily activities depend.

Verticality perception was assessed with a computerized rod and frame test (CRFT) in two visual conditions: without a surrounding frame and with a distracting tilted frame. The tilted frame condition measures level of visual dependence or reliance of visual cues for posture and orientation. In total, 39 young adult men were recruited at different stages of Ramadan fasting: 21 were tested at the end of the first week (Week 1) and 18 others at the end of the third week (Week 3) of Ramadan. Also, 39 participants were recruited to serve as a non-fasting control group. Factorial ANOVA analyses were conducted to identify the main effects of fasting status, time-of-day and the interaction between them on blood glucose levels, nocturnal sleep duration and vertical alignment errors.

The main effect of fasting status on glucose level was significant (p = 0.03). There was a significant time-of-day main effect on glucose levels (p = 0.007) and sleep duration (p = 0.004) only in fasting participants. Neither the main effects of fasting status nor time-of-day were significant for rod alignment errors in both visual conditions. The interaction of fasting status and time-of-day was not significant either. This may indicate that any negative effect of Ramadan fasting on activities that are critically dependent on verticality perception and spatial orientation, such as sports and driving, may not be due to verticality misperception.

The present study was the first to investigate the effect of Ramadan fasting on spatial orientation. It demonstrated robustness of verticality perception to fasting status and the point of fasting during Ramadan. Verticality perception was also unaffected by time-of-day effects in non-fasting and fasting groups at two different points of Ramadan. This study corroborates others reporting heterogeneous effects of Ramadan fasting on cognitive function.

Lean business ideology has been one of the recent dominant research areas in operations management. However, there is a dearth of research focusing on Lean in small- and medium-sized enterprises (SMEs). The purpose of this paper is to fill this gap by systematically reviewing the literature in relation to the implementation of Lean in SMEs.

Tranfield et al.’s (2003) systematic review methodology was employed covering three stages: planning, conducting and reporting/dissemination.

A descriptive analysis of the papers reviewed is provided. From the thematic analysis of the literature four main themes are identified: the scope/type of Lean being adopted by SMEs, how Lean is used in SMEs, the impact of Lean implementation on SMEs and the critical success factors for Lean implementation in SMEs. Key inhibitors and enablers related to firm size when implementing Lean are also identified in the concluding discussion.

Nine recommendations for future research are developed associated with Lean implementation in SMEs.

The authors suggest SMEs to integrate organisational factors such as employee empowerment and the development of a supportive strategy into their Lean implementation plans. A preliminary “Staircase Road Map” to guide SMEs in implementing Lean is also developed.

This paper goes beyond previous literature reviews of Lean by systematically and critically evaluating key themes of Lean implementation within an SME environment. It not only provides a road map for SME owners/managers who intend to implement Lean, but also provides the academic community with an agenda for future research.

The purpose of this paper is to use a systems lens to assess the comparative performance of healthcare supply chains and provide guidance for their improvement.

A well-established and rigorous multi-method audit methodology, based on the uncertainty circle model, yields an objective assessment of value stream performance in eight Australasian public sector hospitals. Cause-effect analysis identifies the major barriers to achieving smooth, seamless flows. Potentially high-leverage remedial actions identified using systems thinking are examined with the aid of an exemplar case.

The majority of the healthcare value streams studied are underperforming compared with those in the European automotive industry. Every public hospital appears to be caught in the grip of vicious circles of system uncertainty, in large part being caused by problems of their own making. The single exception is making good progress towards seamless functional integration, which has been achieved by elevating supply chain management to a core competence; having a clearly articulated supply chain vision; adopting a systems approach; and, managing supplies with accurate information.

The small number of cases limits the generalisability of the findings at this time.

Hospital supply chain managers endeavouring to achieve smooth and seamless supply flows should attempt to elevate the status of supplies management within their organisation to that of a core competence, and should use accurate information to manage their value streams holistically as a set of interwoven processes. A four-level prism model is proposed as a useful framework for thus improving healthcare supply delivery systems.

Material flow concepts originally developed to provide objective assessments of value stream performance in commercial settings are adapted for use in a healthcare setting. The ability to identify exemplar organisations via a context-free uncertainty measure, and to use systems thinking to identify high-leverage solutions, supports the transfer of appropriate best practices even between organisations in dissimilar business and economic settings.

The purpose of this paper is to identify criteria according to which e-dictionaries can be evaluated. Information technology can be used to enhance e-dictionaries, but if not done carefully, information tools that completely overwhelm a user with irrelevant information can be developed. Criteria are necessary according to which e-dictionaries can be developed and evaluated to ensure tools that only provide relevant information on demand.

A literature review was conducted to identify trends in lexicography and modern information technology. Previous usability studies were considered to identify key usability issues. The information was synthesised to identify a set of criteria.

It was found the e-dictionaries should be evaluated according to their content, information architecture, navigation, access (searching and browsing), help, customisation and use of other innovative technologies.

A comprehensive set of criteria has been identified that can be used to evaluate e-dictionaries and to guide lexicographers in the development of e-dictionaries.