The paper aims at proposing a criterion to optimize the initial level of spare parts inventory for a ship. Adequate stockholding of critical spare parts becomes essential in naval industry characterized by heavy utilization of equipment and machinery and by really specific operating conditions. Generic approaches are inadequate and specific ones result in analysis too shallow. An application fo...

Dünyanın %71'i denizlerle kaplıdır. Denizcilik, sunduğu ekonomik maliyetler nedeniyle uluslararası ticari taşımacılıkta en çok tercih edilen sektördür. Enerji, tıbbi ekipman, ilaç, gıda ve benzeri hammadde ürünlerin nakliyesi çoğunlukla deniz yoluyla yapılmaktadır. Bu çalışmada; Denizcilerin bilgi birikimleri ile çalışma performansları gemiye uyumları arasındaki ilişkinin incelenmesi amaçlanmak...

BACKGROUND Hydrocarbons which are among the major components of petroleum products are considered toxic and have been implicated in a number of human diseases. Tanker drivers are continuously exposed to hydrocarbons by inhalation and most of these drivers do not use protective devices to prevent inhalation of petroleum products; nor do they visit hospital regularly for routine check-up. OBJEC...

A modification to the Dantzig and Fulkerson tanker scheduling problem is described. An insufficient number of vehicles and a utility associated with each vehicle delivery are assumed. The new problem is shown to be equivalent to a transshipment problem, the solution of which is the same as the maximal utility solution of the modified tanker scheduling problem. An example is given.

Articulated liquid cargo vehicles transporting inflammable fuels and dangerous chemical products require special consideration when traveling on urban roads or cruising at highway speeds. The road safety and handling of these kinds of vehicles may be adversely affected when negotiating sharp turns or travelling on slippery roads, which may result in either lateral instabilities or complete roll...

This paper attempts to investigate the possibility of structural change in tanker freight volatilities pre-and during the financial crisis. The aim is to apply a Markov-switching general autoregressive conditional heteroskedasticity (MS-GARCH) model that identifies and estimates the parameters of high and low volatility states, which are associated with different stages in the business cycle. T...

Energy supply routes to a given TIAM region (say E.U.) are subject to randomness, resulting in partial or total closure of a route (corridor). For instance: a pipeline may be subject to technical problems that reduce its capacity. Or, oil supply by tanker may be reduced for political reasons or because of equipment mishaps at the point of origin, or again by a conscious decision by the supplier...

Work on deck on eight oil product tankers was examined. The purpose was to evaluate the need for improvement of the working environment to reduce the risk of occupational cancer. Benzene, polyaromatic hydrocarbons (PAHs) and organic lead compounds were sampled, and the crew answered a questionnaire on acute health effects. By area monitoring, benzene was generally found to be in the range from ...

As you requested in your letter of September 25, 2003, the Congressional Budget Office (CBO) has evaluated the Department of Defense’s response to your request that it examine alternative strategies for acquiring 100 Boeing KC-767A tanker aircraft. According to the department’s analysis, implementing the options described in its response would save from $0.8 billion to $5.5 billion in acquisiti...