نتایج جستجو برای: ships
تعداد نتایج: 10195 فیلتر نتایج به سال:
Ballast water treatment consists of the elimination of exotic species. Currently, the development of alternative methods for this process is directed toward treatment onboard ships. However, we present onshore treatment as a viable alternative for ballast water treatment. We investigated onshore treatment in two iron ore ports with movement capacities of 25 and 90 million tons annually (Mta) th...
Introduction The battle of Coronel was the fi rst British defeat in the First World War and is not often remembered. It played out in the southern Pacifi c Ocean, off the coast of Chile. On 1 November 1914, the Royal Navy (RN) confronted a German squadron outside the port of Coronel (36o 59’ 26.24’’ S, 73o 37’ 53.39’’ W), close to Chile’s second city of Concepción. The Germans won a resounding ...
In recent years, single object tracking has been extensively studied and achieved much development. However, multiple objects tracking is still an issue that remains to be addressed. Generally speaking, existing multiple objects tracking methods employ a manner of simultaneously tracking each object respectively. In this paper, we develop a multiple ship tracking algorithm based on deformable p...
In June 2006, reported outbreaks of norovirus on cruise ships suddenly increased; 43 outbreaks occurred on 13 vessels. All outbreaks investigated manifested person-to-person transmission. Detection of a point source was impossible because of limited investigation of initial outbreaks and data sharing. The most probable explanation for these outbreaks is increased norovirus activity in the commu...
One of the most difficult tasks of ship detection is detecting the ship which is docking at the port in remote sensing image. Traditional methods of automatic detection cannot be used to detect the land/waterboundaries, because both the gray values and textural features of a port are similar to those of the ships which are docking at the port. Therefore, ships cannot be accurately detected in t...
In 1601, the British ship captain James Lancaster tested what was then a little known innovation in naval dietary practice when he set sail for India with a fleet of four ships. While the crew of three of his ships followed their usual diets, all of the men on the fourth were required to consume a teaspoon of lemon juice three times a day. The utility of this innovation was irrefutable. By half...
Human resources management (HRM) have been increased its functionality and popularity in the shipping business, due to the expeditiously changes in technology, market strategies, risks and challenges in transportation industry. Despite the requirements of International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW), held by International Maritime Organi...
Scattering mechanism (SM) analysis is a promising technique for ship detection and classification in polarimetric SAR (PolSAR) images. In this paper, a four-component model-based decomposition method incorporating surface, double-bounce, volume and cross-polarized components is proposed for analyzing the SMs of ships. A novel cross-polarized scattering component capable of discriminating betwee...
Fluorescence by naturally occurring dissolved organic matter (FDOM) is a sensitive indicator of ballast water source, with high FDOM in coastal ballast water decreasing typically dramatically when replaced by oceanic seawater during ballast water exchange (BWE). In this study, FDOM was measured in 92 ships arriving at Pacific ports on the US west coast and in New Zealand, and used to assess the...
Recently, a basic pattern of coast seaway system networking has been established in China. As a result, a large number of precautionary areas will be gradually established. Because of the high frequency of ships’ encounters and accidents, these precautionary areas have been a weak but important facet of ships’ routeing. Navigational Traffic Conflict Technique (NTCT) was introduced to quantitati...
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