214 research outputs found
Profiles
Short biographical sketches of Henry Whitcom Sweeney by A.N. Mosich, DR Scott by James R. Morton, John Bennett Canning by William Robert Smith, and F.R.M. de Paula by Stephen A. Zeff
Air entrainment through free-surface cusps
In many industrial processes, such as pouring a liquid or coating a rotating
cylinder, air bubbles are entrapped inside the liquid. We propose a novel
mechanism for this phenomenon, based on the instability of cusp singularities
that generically form on free surfaces. The air being drawn into the narrow
space inside the cusp destroys its stationary shape when the walls of the cusp
come too close. Instead, a sheet emanates from the cusp's tip, through which
air is entrained. Our analytical theory of this instability is confirmed by
experimental observation and quantitative comparison with numerical simulations
of the flow equations
Bias Correction of Hydrologic Projections Strongly Impacts Inferred Climate Vulnerabilities in Institutionally Complex Water Systems
Water-resources planners use regional water management models (WMMs) to identify vulnerabilities to climate change. Frequently, dynamically downscaled climate inputs are used in conjunction with land-surface models (LSMs) to provide hydrologic streamflow projections, which serve as critical inputs for WMMs. Here, we show how even modest projection errors can strongly affect assessments of water availability and financial stability for irrigation districts in California. Specifically, our results highlight that LSM errors in projections of flood and drought extremes are highly interactive across timescales, path-dependent, and can be amplified when modeling infrastructure systems (e.g., misrepresenting banked groundwater). Common strategies for reducing errors in deterministic LSM hydrologic projections (e.g., bias correction) can themselves strongly distort projected climate vulnerabilities and misrepresent their inferred financial consequences. Overall, our results indicate a need to move beyond standard deterministic climate projection and error management frameworks that are dependent on single simulated climate change scenario outcomes
A weak lensing analysis of a STIS dark-lens candidate
We perform a weak lensing analysis on a previously reported dark-lens
candidate on STIS Parallel data (Miralles et al. 2002). New VLT-data indicate
that the reported signal originates from a small number of galaxies
tangentially aligned towards the center of the STIS field but no signature for
an extended mass distribution is found. We argue that we should be able to
detect a massive cluster () through its
lensing signal up to a redshift of with our data. Also the
double image hypothesis of two galaxies with very similar morphologies in the
STIS data is ruled out with colour information.Comment: 9 pages, 8 figures, submitted to A&A main journa
Theoretical studies of the historical development of the accounting discipline: a review and evidence
Many existing studies of the development of accounting thought have either been atheoretical or have adopted Kuhn's model of scientific growth. The limitations of this 35-year-old model are discussed. Four different general neo-Kuhnian models of scholarly knowledge development are reviewed and compared with reference to an analytical matrix. The models are found to be mutually consistent, with each focusing on a different aspect of development. A composite model is proposed. Based on a hand-crafted database, author co-citation analysis is used to map empirically the entire literature structure of the accounting discipline during two consecutive time periods, 1972â81 and 1982â90. The changing structure of the accounting literature is interpreted using the proposed composite model of scholarly knowledge development
Analyzing European Union Politics
The speed and depth with which the European Communities/
European Union has evolved is breathtaking and
has radically shaped the life of the continent. Ever since the
beginning of this ambitious economic and political project,
scholars around the world have tried to explain the underlying
logic behind it and the mechanisms of its functioning.
Thus, a plethora of studies developed alongside the evolution
of the EU.
SENT (Network of European Studies) is an innovative
and ambitious project which brought together about 100
partners from the EU member states, candidate and associated
countries, and other parts of the world. It was a far
reaching project aimed to overcome disciplinary and geographical-
linguistic boundaries in order to assess the state
of EU studies today, as well as the idea of Europe as transmitted
by schools, national politicians, the media, etc.
SENTâs main goal was to map European studies, in order
to get a comprehensive picture of the evolution of European
studies over the last decades in different disciplines and
countries. This approach permitted to achieve a better understanding
of the direction these studies are now taking.
Five disciplines were identified where EU studies have particularly
evolved: law, politics, economics, history, and social
and cultural studies. The mapping of EU studies thus includes
a review of the most studied issues in EU studies today,
the main academic schools, the most influential journals
and books published, but it also shows how local realities
and national identities affect the study and teaching of Europe
around the world. In addition, an important work was
done in mapping and discussing teaching methodologies in
relation to European studies with the aim of introducing and
diffusing the most up-to-date techniques
Wave instabilities in the presence of non vanishing background in nonlinear Schrodinger systems
We investigate wave collapse ruled by the generalized nonlinear Schroedinger (NLS) equation in 1+1 dimensions, for localized excitations with non-zero background, establishing through virial identities a new criterion for blow-up. When collapse is arrested, a semiclassical approach allows us to show that the system can favor the formation of dispersive shock waves. The general findings are illustrated with a model of interest to both classical and quantum physics (cubic-quintic NLS equation), demonstrating a radically novel scenario of instability, where solitons identify a marginal condition between blow-up and occurrence of shock waves, triggered by arbitrarily small mass perturbations of different sign
Publication Records of Faculty Promoted to Professor: Evidence from the UK Accounting and Finance Academic Community
This study investigates the publication profiles of 140 accounting and finance faculty promoted to the senior rank of professor at UK and Irish universities during the period 1992 to 2007. On average, approximately 9 papers in Association of Business Schools (ABS) (2008)-listed journals, with 5 at the highest 3*/4* quality levels in a portfolio of 20 outputs are required for promotion to professor. Multivariate analysis provides evidence that publication requirements in terms of ABS ranked journal papers have increased over time, an effect attributed to the government research assessment exercise. There is no evidence that requirements differ for: internal versus external promotion, male versus female candidates; accounting versus finance professors, research intensity of institution peer group; or government research ranking of unit. There is also no evidence of a substitution effect in relation to increased recent publication history, quantity of non-ABS outputs or sole-authorship, all of which show a significant complementary effect. It is noted that there is very limited overlap in the UK and US publication journal sets, suggesting underlying geographically-based paradigm differences. The benchmarks provided in this study are informative in a range of decision settings: recruitment; those considering making an application for promotion to a chair and those involved in promotion panels; cross-disciplinary comparisons; and resource allocation. The evidence presented also contributes to the emerging policy debates concerning the aging demographic profile of accounting faculty, the management of academic labour and the Research Excellence Framework
The impact of non-serial publications on research in accounting and finance
This study examines the role of books and official publications in accounting and finance research. From an analysis of thirteen leading journals for the year 1987-8 we report on the characteristics of such non-serial materials used by authors to support their research. We find that the accounting discipline in particular has become more open to influence from other disciplines. The individual perspectives of these thirteen journals can be partially revealed by their use of non-serial materials. Using cluster analysis we examine inter-journal variations in the disciplinary pattern of book citations and the distribution of citations to official bodies. Several relatively homogeneous groupings are identified
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