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This paper is concerned with the determination of the transient stress and deformational state of plate‐like discontinua subject to flexural cracking. Such a phenomenon can be easily visualized as the type of fragmentation to floating sea ice impacted by an ice‐breaker or offshore platform. The discrete element method is used to solve the dynamic equilibrium equations for each distinct deformable body and the interaction between bodies. Each body may deform elastically and fracture into further pieces if a brittle failure criterion for flexure is exceeded. The discrete plate element is a hybrid thin‐plate (Kirchhoff) mode lumped at element boundaries with transverse shear deformation computed at element centroids. Errors in computed stresses near point loads and cracks by the current element warrant the use of an improved mixed mode plate element. A three‐dimensional application of the discrete element method is presented for the case of fragmentation of floating sea ice impacting an arctic offshore platform. A semi‐implicit solution scheme is introduced to overcome the stringent explicit time step stability conditions due to stiff members in the discrete element formulation.

In the southern hemisphere, the Antarctic continent is also experiencing a net loss in ice from the extensive glaciers and ice sheets that cover it. However, the connection between changes in Antarctic ice sheets and the global warming trend are much more uncertain than in the Arctic. The complex of changes in the Antarctic climate and the ice sheets are described in a later section of this chapter.

The ice pack covering the Arctic basin is composed of a multitude of ice parcels of different areas, ages, thicknesses, and deformation histories that are frozen together into larger plates that combine and break apart in response to the demands of ever changing boundary conditions and forcing. Current Arctic sea ice models are Eulerian continuum models that use a plastic yield surface to characterize the constitutive behavior of the pack. An alternative is to adopt a discontinuous Lagrangian approach, based on a discrete element model and explicitly simulate individual ice parcels and the interactions between them. The mechanics of the Lagrangian sea ice model are outlined in detail along with the methods that will be used for validation.

This paper aims to present the physics of climate and climate change in an accessible manner to the layman in the context of shifting spheres.

This paper presents the physics of climate and climate change in an accessible manner to the layman in the context of shifting spheres. This is a viewpoint and more of a literature review than new findings.

Earth's climate is changing due to man's influence.

Climate change will be a major factor in the future of our society.

The text is original. The information is not. There is recent information in this article. The author even updated things during the review process. The science is always improving.

Presents over sixty abstracts summarising the 1999 Employment Research Unit annual conference held at the University of Cardiff. Explores the multiple impacts of globalization on work and employment in contemporary organizations. Covers the human resource management implications of organizational responses to globalization. Examines the theoretical, methodological, empirical and comparative issues pertaining to competitiveness and the management of human resources, the impact of organisational strategies and international production on the workplace, the organization of labour markets, human resource development, cultural change in organisations, trade union responses, and trans‐national corporations. Cites many case studies showing how globalization has brought a lot of opportunities together with much change both to the employee and the employer. Considers the threats to existing cultures, structures and systems.

The purpose of this study is to evaluate the profitability of the Northern Sea Route (NSR) as a shipping lane from the financial perspective of shipping companies under post 2020 sulphur regulations.

This study develops profit estimation model, and the profitability of the NSR is assessed for a Handymax Medium Range (MR) tanker vessel using scenarios in combination with spot market earning levels, the regulation compliance method and destination ports. The required freight rates are calculated to justify the decision of shipowners to transit a tanker from the Baltic spot market to the NSR navigation.

Results suggest that the required freight rates from the Arctic trade to justify the transit to the NSR are higher than the actual agreed rates in the past, which implies low viability of the NSR as a regular shipping lane. It was also found that the required freight rates are affected by the spot market earning levels, compliance method and duration of the voyage.

This study takes a new approach on assessing the NSR viability by comprehensively assessing the annual profitability and including the spot market trade as an opportunity cost for the NSR shipping. Despite various scenarios used in this study, a sensitivity analysis would be useful for future research.

This study suggests how much freight rates a shipping company would need to charge if it were to offer tanker shipping services to four major Asian ports while simultaneously operating at the Baltic Sea during the remainder of the year.

This study adopts a market-oriented approach by incorporating both earnings and costs (including opportunity costs) in the profitability model rather than merely analyzing the total cost of shipping via the NSR. This study also analyzes impact of IMO 2020 Sulphur regulation on the NSR profitability.

The Incheon Region has numerous assets that fall within a Pentaport model.' These include the Incheon International Airport, the Port of Incheon, a coastal industrial park, free economic zones, a leisure port, and Songdo new town designed to be the future Silicon Valley of Korea. This paper looks at how Northeast Asia trade flows between China and Korea might be enhanced by application of the Pentaport model in making the Incheon region a North East Asian Hub. It looks also at their trade and logistics systems as well as their water borne commerce. It proposes an integrated transportation system for the Yellow Sea Region being beneficial to the economies of the Northeast Asia. It also stresses that innovative technologies for ships, terminals and cargo handling systems should be introduced to develop a competitive short sea shipping system in the region and cooperation among the regional countries will be essential to achieve the final goal. The potential of methods of container shipping is discussed as it might apply to short sea shipping in the Yellow Sea Region that could greatly facilitate Incheon's situation with respect to the broader region in application of the Pentaport model.

The Northern Sea Route (NSR) could become viable in the near future. If this happens, it will radically reduce sailing times and distances on routes from Asia to Northern Europe. However, although much has been written about the feasibility of the NSR, about the issues involved and about the possible opening of the route, the views of key stakeholders from companies who would potentially benefit from the route have been little explored. The purpose of this paper is to complement the existing literature on the feasibility of and issues related to the NSR by presenting and discussing the results from in-depth qualitative interviews with nine key stakeholders based in Shanghai and Taiwan who have extensive research, knowledge and practical experience of NSR.

Based on a grounded theory analysis, a total of nine key stakeholders knowledgeable about NSR and the majority with sailing experience of NSR are interviewed, including one government official, two professors, shipping experts in six liner and one bulk shipping companies.

The authors present interviewees’ thoughts regarding the feasibility of NSR at the current time in terms of practicalities, ships, costs, information and wider issues.

These thoughts show that whilst the potential of NSR is huge in theory, in practice the overall perception of it in terms of current feasibility from a company perspective is one of challenges and unknown issues. Shipping companies can benefit from the authors findings when considering the feasibility of NSR as a shipping route. Ultimately, the picture emerges that without one country, probably Russia, taking the lead on the route, it will remain only a theoretical one.

In-depth interviews with grounded theory are used to investigate current and actual thoughts on NSR. This paper highlights correlations and additions to show a fuller picture of current knowledge and adds views from Shanghai and Taiwan.