381 research outputs found
Geoinformatics for applied coastal and marine management
In the twenty-first century, the world is becoming increasingly dependent on the economic, social and environmental benefits derived from ocean and coastal services and resources. This is of course primarily true of those countries that have coastlines but, as Bruce McCormack has suggested in the preface to this book, even those communities that lie far inland from the sea will benefit as well. The âocean economyâ has become a recognized and measured contributor to national gross domestic product (GDP) (Pauli, 2010; Economist Intelligence Unit, 2015). According to the national account of many countries, the ocean economy and marine-based industries may produce from 1-5% of their GDP (Park and Kildow, 2014). Not only has there been greater emphasis on implementing strategies to develop the economic sector, but there is also an increasing urgency for protection of marine resources. This is mirrored by Sustainable Development Goal 14, which is to conserve and sustainably use the oceans, seas and marine resources for sustainable development
Comparative analysis of the USAâs Washington Ferries and road transport carbon emissions using the Trozzi and Vaccaro and Greatest Integer functions
Countriesâ sectors are currently under great scrutiny for their response to the greenhouse gas (GHG) emission profle and the general efect of the sectoral activities on the environment. As in the agenda of all sectors, environmental concerns and investigations are of high importance in shipping and maritime transport. Amidst the rising forms of globalization, the need for sustainable transportation is constantly increasing. However, the machines that are the cornerstone of transportation largely depend on fossil fuels, thus resulting in environmental degradation. Notably, environmental-related degradation
has continued to account for global warming, climate change, and ocean acidifcation. Shipping is considered the most environmentally friendly mode of transportation in terms of carbon dioxide (CO2) emissions per ton per mile of transported unit load when compared against road transportation. In this study, six ferry lines (FLs) of Washington State Ferries were calculated to compare ship-generated carbon dioxide (CO2) emissions with those from road transportation as if the carried vehicles had used the highway instead of transport by FL. While making these calculations, the Greatest Integer function (GIF) and Trozzi and Vaccaro function (TVF) were utilized. From the examined three scenarios, i.e., all passengers travel by car instead of ferry as scenario 1, all ferries carry both cars and passengers as scenario 2, and all car-free passengers travel by bus instead of ferry as scenario 3, the outlined results are as follows: (i) none of the cars were carried by the ferry, and car free passengers preferred traveling by their own cars as observed in scenario 1; (ii) hypothetical scenarios (1 to 3) in which the road vehicles carried on FLs had instead used the highway, and the total potential CO2 emissions of these road vehicles
were calculated as 2,638,858.138, 704,958.2998, and 1,394,148.577 tonnes per year, respectively. Policy-wise, this study revealed the management strategies for CO2 emissions reduction for two transport modes, shipping and road transportation, under current conditions.publishedVersio
THE GEOPOLITICS OF POWER: UNDERSTANDING CHINAâS MILITARIZATION OF THE SOUTH CHINA SEA
The South China Sea (SCS) has become an international focal point in recent years largely due to Chinaâs reclamation and militarization of island features in contested waters. Many pundits, journalists, analysts, and researchers distill the motivation behind Chinaâs activities, and the broader SCS international disputes, down to control of and access to resourcesâprimarily fisheries and hydrocarbon reservesâand shipping routes. Most scholars and experts on the region agree that these factors play an important role; however, many also point to broader motivations for Chinaâs staunch defense of its ânational sovereignty.â Nonetheless, a key element is often lacking in many of the most thorough analyses of the SCS conflicts: the geographic perspective. A wide range of publicly-available spatial data makes such an assessment possible. This thesis examines the existing body of scholarly work on the SCS, its significance, and causes of conflict; assesses the main hypotheses for Chinaâs militarization of contested features in the SCS geographically; and ultimately places each hypothesis within the broader framework of Chinaâs practical and strategic considerations
MSP Plans in MSPMED; main facts
El objetivo de este informe es la creaciĂłn de fichas comparativas de los planes nacionales de ordenaciĂłn del espacio marĂtimo de los paĂses socios de MSPMED con el fin de detectar los puntos comunes y las principales diferencias entre ellos
Journal of Applied Hydrography
Fokusthema: International Issue: Joint publication by AFHy and DHyG for HYDRO 2
Fatigue Detection for Ship OOWs Based on Input Data Features, from The Perspective of Comparison with Vehicle Drivers: A Review
Ninety percent of the worldâs cargo is transported by sea, and the fatigue of ship officers of the watch (OOWs) contributes significantly to maritime accidents. The fatigue detection of ship OOWs is more difficult than that of vehicles drivers owing to an increase in the automation degree. In this study, research progress pertaining to fatigue detection in OOWs is comprehensively analysed based on a comparison with that in vehicle drivers. Fatigue detection techniques for OOWs are organised based on input sources, which include the physiological/behavioural features of OOWs, vehicle/ship features, and their comprehensive features. Prerequisites for detecting fatigue in OOWs are summarised. Subsequently, various input features applicable and existing applications to the fatigue detection of OOWs are proposed, and their limitations are analysed. The results show that the reliability of the acquired feature data is insufficient for detecting fatigue in OOWs, as well as a non-negligible invasive effect on OOWs. Hence, low-invasive physiological information pertaining to the OOWs, behaviour videos, and multisource feature data of ship characteristics should be used as inputs in future studies to realise quantitative, accurate, and real-time fatigue detections in OOWs on actual ships
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Towards a WHAT-WHY-HOW Taxonomy of Trajectories in Visualization Research
Effective analysis of movement often requires a comprehensive approach where computational and visual methods are combined to address a wide variety of tasks involving movers with diverse characteristics. In order to help the process of designing effective methods for a wide range of movement analysis cases, we develop a provisional taxonomy that links what Brehmer et al. [BM13] term statements of WHY-WHAT-HOW with tasks, types of movers, context and methods used to compute or visualize data. Within this document we present the origin of this taxonomy, the process we followed to populate it, discuss the novel categories within it, and finally use it to explore relationships between elements of trajectory analysis. Our main contribution is to provide a new means of connecting elements of WHY-WHAT-HOW when analysing trajectories
A Hybrid MCDM Approach to Transshipment Port Selection
Port selection is an intrinsic supply-chain problem that has substantial impact on development of local economies. Shipping business environment developed into complex system where decision making is derived from uncertain and incomplete data. In this study we present a conceptual integrated Multi-Criteria Decision solution to transshipment port selection problem based on Best-Worst MCDM and Artificial Bee Colony Algorithm. Through literature review and expert analysis, 50 relevant criteria have been identified as relevant to the transshipment port selection problem. Decision makers within liner shipping companies evaluate transshipment port selection criteria and establish ranking that is used to determine crisp solution with lowest consistency ratio. ABC based algorithm is used to reduce computational complexity and deliver a single optimal solution by solving both objective and constraint violation functions
Assessing the costs and environmental benefits of IMO regulations of ship-originated SOx and NOx emissions in the Baltic Sea
To assess the value of the environmental benefits of the Sulphur Emission regulation (SECA) that came into force in 2015, changes in depositions of SOx and NOx from ship exhaust gas emissions were modelled and monetized for the Baltic Sea region for the years 2014 and 2016. During this period, the total deposition of SOx in the study area decreased by 7.3%. The decrease in ship-originated SOx deposition from 38 kt to 3.4 kt (by over 88%) was translated into a monetary value for the ecosystem impacts of nearly 130 million USD, according to the EcoValue08 model. This is less than the modelled health benefits, but it is not insignificant. For NOx, there was no decreasing trend. The exceedance of the critical loads of SOx and NOx was also estimated. The effect of Baltic shipping on the exceedance of critical loads of acidification after SECA is very small, but Baltic shipping still has a considerable effect on the exceedance of critical loads for eutrophication
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