11,406 research outputs found
Now the wars are over: The past, present and future of Scottish battlefields
Battlefield archaeology has provided a new way of appreciating historic battlefields. This paper provides a summary of the long history of warfare and conflict in Scotland which has given rise to a large number of battlefield sites. Recent moves to highlight the archaeological importance of these sites, in the form
of Historic Scotland’s Battlefields Inventory are discussed, along with some of the problems associated with the preservation and management of these important
cultural sites
Model studies of Helmholtz resonances in rooms with windows and doorways
Numerical analysis of Helmholtz resonator system established between windows and open doors when subjected to sonic boom impulsive load
Rescue litter flotation assembly Patent
Development and characteristics of rescue litter with inflatable flotation device for water rescue applicatio
Parallel execution of horn claus programs
Imperial Users onl
Discrete-valued Levy processes and low latency financial econometrics
Motivated by features of low latency data in finance we study in detail discrete-valued Levy processes as the basis of price processes for high frequency econometrics. An important case of this is a Skellam process, which is the difference of two independent Poisson processes. We propose a natural generalisation which is the difference of two negative binomial processes. We apply these models in practice to low latency data for a variety of different types of futures contracts.futures markets; high frequency econometrics; low latency data; negative binomial; Skellam distribution.
Recent developments in the application of risk analysis to waste technologies.
The European waste sector is undergoing a period of unprecedented change driven
by business consolidation, new legislation and heightened public and government
scrutiny. One feature is the transition of the sector towards a process industry
with increased pre-treatment of wastes prior to the disposal of residues and the
co-location of technologies at single sites, often also for resource recovery
and residuals management. Waste technologies such as in-vessel composting, the
thermal treatment of clinical waste, the stabilisation of hazardous wastes,
biomass gasification, sludge combustion and the use of wastes as fuel, present
operators and regulators with new challenges as to their safe and
environmentally responsible operation. A second feature of recent change is an
increased regulatory emphasis on public and ecosystem health and the need for
assessments of risk to and from waste installations. Public confidence in waste
management, secured in part through enforcement of the planning and permitting
regimes and sound operational performance, is central to establishing the
infrastructure of new waste technologies. Well-informed risk management plays a
critical role. We discuss recent developments in risk analysis within the sector
and the future needs of risk analysis that are required to respond to the new
waste and resource management agenda
Preliminary investigation of pressure influence on multiphase heat transfer report no. ii
Pressure and surface condition in multiphase boiling heat transfe
European household waste management schemes: Their effectiveness and applicability in England.
This paper reviews European household waste management schemes and provides an
insight into their effectiveness in reducing or diverting household waste. The
paper also considers the feasibility of replicating such schemes in England.
Selected case studies include those implemented using variable charging schemes,
direct regulation and household incentivisation (reduced disposal charges). A
total of 15 case studies were selected from developed countries in the EU where
some schemes have operated for more than a decade. Criteria for assessing the
effectiveness and replicability of schemes were developed using scheme progress
towards targets, response time, compatibility with government policy, ease of
administration and operation, and public acceptance as attributes. The study
demonstrates the capability of these schemes to significantly reduce household
waste and suggests changes to allow their possible adoption in England. One of
the main barriers to their adoption is the Environmental Protection Act, 1990
that prevents English local authorities (LAs) from implementing the variable
charging method for household waste management. This barrier could be removed
through a change in legislation. The need to derive consistent data and
standardise the method of measuring the effectiveness of schemes is also
highlighted
Buoyant stokes litter assembly used for sea rescue operations
Standard stokes litter is fastened to inflatable flotation units for sea rescue operations. The assembly keeps an injured person immobilized during transportation to a first aid station
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