Audiovisual preservation strategies, data models and value-chains

This is a report on preservation strategies, models and value-chains for digital file-based audiovisual content. The report includes: (a)current and emerging value-chains and business-models for audiovisual preservation;(b) a comparison of preservation strategies for audiovisual content including their strengths and weaknesses, and(c) a review of current preservation metadata models, and requirements for extension to support audiovisual files

Snakes or Ladders? Skill Upgrading and Occupational Mobility in the US and the UK during the 1990s

It is frequently argued that the process of skill upgrading has both worsened the employment prospects and decreased the relative wages of unskilled workers. However, workers are not immutably either low skill or high skill, and skill upgrading may offer the opportunity for workers to move up the ‘skill ladder’. In this paper we examine the balance of these two effects. We use comparable individual-level panel data from the US and the UK to relate the probability of individual occupational movement to the extent of skill upgrading at the industry level. We find that whilst skill upgrading does indeed have a positive impact on the probability of moving up the job ladder, this is insufficient to outweigh the increased probability of unemployment. We also find that workers moving down or off the ladder suffer large wage penalties.Skill upgrading, occupational mobility, promotions and demotions

Dynamical evolution of star forming regions - II. Basic kinematics

We follow the dynamical evolution of young star-forming regions with a wide range of initial conditions and examine how the radial velocity dispersion, $\sigma$, evolves over time. We compare this velocity dispersion to the theoretically expected value for the velocity dispersion if a region were in virial equilibrium, $\sigma_{\rm vir}$ and thus assess the virial state ($\sigma / \sigma_{\rm vir}$) of these systems. We find that in regions that are initially subvirial, or in global virial equilibrium but subvirial on local scales, the system relaxes to virial equilibrium within several million years, or roughly 25 - 50 crossing times, according to the measured virial ratio. However, the measured velocity dispersion, $\sigma$, appears to be a bad diagnostic of the current virial state of these systems as it suggests that they become supervirial when compared to the velocity dispersion estimated from the virial mass, $\sigma_{\rm vir}$. We suggest that this discrepancy is caused by the fact that the regions are never fully relaxed, and that the early non-equilibrium evolution is imprinted in the one-dimensional velocity dispersion at these early epochs. If measured early enough ($<$2 Myr in our simulations, or $\sim$20 crossing times), the velocity dispersion can be used to determine whether a region was highly supervirial at birth without the risk of degeneracy. We show that combining $\sigma$, or the ratio of $\sigma$ to the interquartile range (IQR) dispersion, with measures of spatial structure, places stronger constraints on the dynamical history of a region than using the velocity dispersion in isolation.Comment: 20 pages, 14 figures, accepted for publication in MNRA

Optimising medicines administration for patients with dysphagia in hospital:Medical or nursing responsibility?

Dysphagia is common—not only associated with stroke, dementia, Parkinson’s but also in many non-neurological medical problems—and is increasingly prevalent in ageing patients, where malnutrition is common and pneumonia is frequently the main cause of death. To improve the care of people with dysphagia (PWD) and minimise risk of aspiration and choking, the textures of food and drinks are frequently modified. Whilst medicines are usually concurrently prescribed for PWD, their texture is frequently not considered and therefore any minimisation of risk with respect to food and drink may be being negated when such medicines are administered. Furthermore, evidence is starting to emerge that mixing thickeners with medicines can, in certain circumstances, significantly affect drug bioavailability and therefore amending the texture of a medicine may not be straightforward. Research across a number of hospital trusts demonstrated that PWD are three times more likely to experience medication administration errors than those without dysphagia located on the same ward. Errors more commonly seen in PWD were missed doses, wrong formulation and wrong preparation through medicines alteration. Researchers also found that the same patient with dysphagia would be given their medicines in entirely different ways depending on the person administering the medicine. The alteration of medicines prior to administration has potential for patient harm, particularly if the medicine has been designed to release medicines at a pre-defined rate or within a pre-defined location. Alteration of medicines can have significant legal implications and these are frequently overlooked. Dispersing, crushing or mixing medicines can be part of, or misconstrued as, covert administration, thus introducing a further raft of legislation. Guidance within the UK recommends that following identification of dysphagia, the ongoing need for the medicine should be considered, as should the most appropriate route and formulation, with medicines alteration used as a last resort. The patient should be at the centre of any decision making. Evidence suggests that in the UK this guidance is not being followed. This article considers the clinical and legal issues surrounding administration of medicines to PWD from a UK perspective and debates whether medicines optimisation should be the primary responsibility of the prescriber when initiating therapy on the ward or the nurse who administers the medicine

Physically inspired interactive music machines: making contemporary composition accessible?

Much of what we might call "high-art music" occupies the difficult end of listening for contemporary audiences. Concepts such as pitch, meter and even musical instruments often have little to do with such music, where all sound is typically considered as possessing musical potential. As a result, such music can be challenging to educationalists, for students have few familiar pointers in discovering and understanding the gestures, relationships and structures in these works. This paper describes on-going projects at the University of Hertfordshire that adopt an approach of mapping interactions within visual spaces onto musical sound. These provide a causal explanation for the patterns and sequences heard, whilst incorporating web interoperability thus enabling potential for distance learning applications. While so far these have mainly driven pitch-based events using MIDI or audio files, it is hoped to extend the ideas using appropriate technology into fully developed composition tools, aiding the teaching of both appreciation/analysis and composition of contemporary music

GLOBALIZATION AND ECON0MIC CONVERGENCE: AN ASSESSMENT

This paper offers a critical survey of a strong globalization thesis that predicts a direct link from more open trade and investment regimes to faster economic growth in developing countries and income convergence across the global economy. Its examination of recent experience suggests that while in a more open and integrated world economy both the quantity and the quality of investment are influenced by external factors the forces driving capital accumulation retain strong domestic roots and remain open to the influence of various types of policy initiative.

GLOBALIZATION RELOADED: AN UNCTAD PERSPECTIVE

This paper rejects the characterization of globalization as an autonomous and irresistible process driven by the impersonal forces of the market and technical progress. Whether domestic or global, market forces are shaped and controlled by policy choices and the institutional frameworks in which they are made. In the absence of adequate institutional frameworks and productive capacities, rapid liberalization is as likely to lead to stagnation and unemployment as to growth and rising incomes per head. We show that the major economic forces presumed to be crucial for spreading the benefits of globalization have been less global than often presented, have proved to be much weaker than widely predicted and carry potentially damaging effects as well as benefits. Accordingly, and without denying that by the late 1970s many developing countries needed to find new ways of inserting themselves into the international economy, we argue that the new policy orientation of macroeconomic stringency, downsizing the public sector and the rapid opening of developing country markets to foreign trade and capital after the debt crisis, has failed to produce an economic environment that supports faster economic growth and strengthens productivity performance. In suggesting the outlines of a more strategic approach to economic development the emphasis is on the need for domestic investment to be mobilized as the basis for industrialization and for a gradual approach to integration with the global economy.

GLOBALIZATION MYTHS: SOME HISTORICAL REFLECTIONS ON INTEGRATION, INDUSTRIALIZATION AND GROWTH IN THE WORLD ECONOMY

It has become popular to draw a parallel between current globalization trends and the half century of international economic integration before the First World War. Indeed, some writers suggest that current trends mark a return to this earlier period, from which they draw strong conclusions about growth prospects and convergence associated with globalization. This paper assesses this historical parallel. It accepts that many features of today´s international economy are not unique. However, it is sceptical of efforts to make a direct parallel with the earlier period. In particular, the paper shows that the period before 1913 was not one of trade liberalization, nor one of reduced expectations about the role of the State, and suggests that rapid industrial growth in some economies cannot be explained by globalization pressures. More generally, a description of this earlier period of globalization as one of rapid growth and convergence is questioned, and instead associated with uneven economic development, during which a very small group of countries were able to reinforce their domestic growth efforts through links to the international economy, while for others these same links did little to alter long-term growth prospects, and in some cases even hindered them.

The effect of finite ion larmor radius on the stability of a cylindrically confined plasma

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