Chartering strategies for shipping companies

This paper describes a model which may be used in the evaluation of the relative effectiveness of policies used in the areas of ship chartering and the switching of combined carriers between the dry cargo market and the tanker market. The policies for chartering and market switching are expressed in the form of ‘desired proportions’ of the fleet operating in a particular charter-mode or a particular market. Graphical illustration of this form of expression of policies can be easily understood, so that alternative policies can be designed with relative ease. The effectiveness of a particular form of policy under various freight market conditions can be determined from the model, the use of which is illustrated by its application to the deployment of the fleet of an hypothetical shipping company. It is assumed that the feedback connection between the company's actions and the marketplace is negligible.     

Age group differences in political activism in Malaysia

ABSTRACT

There is a dearth of studies on age-related patterns of political activism in Malaysia, specifically on young people’s patterns of political participation relative to their elders, and in relation to the rich literature that has developed in Western democracies. By analysing survey data from Wave 6 (2010–2014) of the World Values Surveys (WVS), this study aims to investigate the differences in political engagement between younger and older people in Malaysia, including new repertoires outside the mainstream politics, by addressing the question of whether young Malaysians are more active in political activities compared to older groups. The findings conform to the expected patterns in the literature that young people are less likely to participate in conventional political activities than their respective elders. However, we find no significant differences for unconventional political participation. The study further shows that demographic indicators such as the levels of education, gender and ethnic group belonging do not appear to be linked to the age gap between youth and their elders in political activism. As such, the study provides evidence that young people in Malaysia are less likely to be politically active than their elders and that this is not clearly attributable to the socio-demographic factors analysed.     

Poster Abstracts

Objectives. To analyse the relation between results of the Aging Males' Symptoms (AMS) questionnaire for aging males, and of quality of life (QOL) questionnaire SF-12 and cardiovascular risk factors.

Methods. 1,927 men aged 55–85 years were interviewed by 56 general practitioners. During the interview the men were asked to fill in the AMS scale and the QOL questionnaire SF-12.

Results. Of 1,927 men 1,806 men filled correctly the AMS questionnaire. The mean SF-12 mental index was respectively 55.9 in men with a total AMS score indicating no impairment, 50.9 mild, 42.8 moderate, and 32.8 severe impairment. The corresponding values for the physical index were 51.2, 46.7, 40.8 and 32.3.

A history of diabetes was associated with an increased risk of reporting moderate/severe impairment: in relation to the total AMS score the odds ratio, (OR), of moderate/severe impairment in comparison with no impairment was 1.6 (95%CI 1.2–2.1). A history of myocardial infarction and hypertension increased the risk (respectively OR 1.4 (95%CI 1.1–18) and 1.7 (95%CI 1.2–2.4)).

Conclusions. This study shows that higher AMS scores are associated with lower SF-12 indices and suggests that elevated values of the AMS score are associated with cardiovascular risk factors or diseases.     

Exchange curves for fixing batch quantities

The problem considered is that of choosing batch quantities to minimize costs, subject to the constraints that neither overall set-up costs nor overall set-up time can be increased beyond certain limits. Theoretical and graphical solutions are obtained for two possible formulations of the problem, and a simple practical procedure is suggested.