Search results for "General Decision Sciences"

Exploring the application of blockchain to humanitarian supply chains: insights from Humanitarian Supply Blockchain pilot project

2021

PurposeSome studies and reports have recently suggested using blockchain technology to improve transparency and trust in humanitarian supply chains (HSCs). However, evidence-based studies to display the utility and applicability of blockchains in HSCs are missing in the literature. This paper aims to investigate the key drivers and barriers of blockchain application to HSCs and explore whether evidence could support that the application of blockchain improves transparency and trust in HSCs.Design/methodology/approachThis paper puts forward a two-stage approach to explore the blockchain application in HSCs: an initial exploration of humanitarian practitioners and academicians interested in b…

Loss of habitats, naturalness and species diversity in Eurasian forest landscapes

2010

Abstract Man has exploited land and forests in Western and Central Europe longer and more intensively than in Northern Europe and further east in Eurasia. We estimated forest naturalness and modelled expected biodiversity loss in seven different landscapes (2500 km2 each) in the Netherlands, Sweden, Finland, Poland, St. Petersburg (Western European Russia), Perm (Eastern European Russia), and Irkutsk (Central Siberia) across the distribution of Pinus sylvestris L. in Eurasia. Field inventories showed that the mean living tree volumes were relatively similar in the studied sites, but the volumes of dead wood differed greatly. In Irkutsk and Perm the volume of dead trees per ha was about 5–10…

Early warning of systemic risk in global banking: eigen-pair R number for financial contagion and market price-based methods

2021

AbstractWe analyse systemic risk in the core global banking system using a new network-based spectral eigen-pair method, which treats network failure as a dynamical system stability problem. This is compared with market price-based Systemic Risk Indexes (SRIs), viz. Marginal Expected Shortfall (MES), Delta Conditional Value-at-Risk (Delta-CoVaR), and Conditional Capital Shortfall Measure of Systemic Risk (SRISK) in a cross-border setting. Unlike paradoxical market price based risk measures, which underestimate risk during periods of asset price booms, the eigen-pair method based on bilateral balance sheet data gives early-warning of instability in terms of the tipping point that is analogou…

Banks’ business strategies on the edge of distress

2019

AbstractThe paper investigates the importance of banks’ business classification in shaping the risk profile of financial institutions on a global scale. We employ a rare-event logit model based on a state-of-the-art list of major global distress events from the global financial crisis. When clustering banks by their business strategies using a community detection approach, we show that (i) capital enhanced resilience only for traditional banks that were on average less capitalized than other banks; (ii) boosting ROE, usually associated with riskier exposures, improved resilience for stable funded and asset diversified banks; (iii) conversely, higher levels of ROA exacerbated banks’ vulnerab…

Competition and cooperation for intermodal container transhipment: A network optimization approach

2018

Abstract This study presents an analysis of cross-border competition and cooperation between ports in Bangladesh and India. Nepal and Bhutan are countries without access to seaports — two landlocked countries in South Asia, depending solely on the Indian port of Kolkata for their international seaborne trade. Alternatives do exist in the Bangladeshi ports of Chittagong and Mongla but these are not exploited, in spite of trade agreements that allow access to a third country's port, and/or crossing the land of a third, intermediate, country. We formulate a mixed integer linear programming optimization model to find the optimum economic benefit of port users (serving Bhutan, Nepal and Northeas…

The humanities are not our patient

2021

When inviting contributions to a special issue of this journal titled ‘Management Learning and the Unsettled Humanities’ the guest editors did not simply encourage contributors to explore possibilities ‘for reciprocal integration’ between the two realms. Stressing that ‘the humanities . . . [are] facing a complex crisis on their own’, they stated that ‘the humanities . . . need to be enriched, nuanced, and critiqued through . . . the ideas and perspectives of organisational research’. While we may agree that all is not well in the humanities and share their scepticism towards ‘just prescribing the value of the humanities to ameliorate the ills of management education’, we are less confiden…

The Performative University: ‘Targets’, ‘Terror’ and ‘Taking Back Freedom’ in Academia

2020

The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link. This special issue assembles eight papers which provide insights into the working lives of early career to more senior academics, from several different countries. The first common theme which emerges is around the predominance of ‘targets’, enacting aspects of quantification and the ideal of perfect control and fabrication. The second theme is about the ensuing precarious evocation of ‘terror’ impacting on mental well-being, albeit enacted in diverse ways. Furthermore, several papers highlight a particular type of response, beyond complicity to…

Characterization of the consistent completion of analytic hierarchy process comparison matrices using graph theory

2018

Scenario optimization asset and liability modelling for individual investors

2006

We develop a scenario optimization model for asset and liability management of individual investors. The individual has a given level of initial wealth and a target goal to be reached within some time horizon. The individual must determine an asset allocation strategy so that the portfolio growth rate will be sufficient to reach the target. A scenario optimization model is formulated which maximizes the upside potential of the portfolio, with limits on the downside risk. Both upside and downside are measured vis- `a-vis the goal. The stochastic behavior of asset returns is captured through bootstrap simulation, and the simulation is embedded in the model to determine the optimal portfolio. …

A Cross-Regional Exploration of Barriers to the Adoption and Use of Electronic Meeting Systems

2007

Originally published in the journal Group Decision and Negotiation: http://www.springerlink.com/content/100270/ Electronic Meeting Systems (EMS) are intended to support group collaboration in completing tasks. While there have been many case studies and laboratory experiments on how EMS can support group tasks, large scale macro investigations exploring EMS adoption and use have been practically non-existent. Furthermore, while several barriers to EMS adoption and use have been suggested, their validation across organizations remains unexplored. We undertook a global initiative to explore information technology support for task-oriented collaboration in the US, Australia, Hong Kong, and Nor…