58,811 research outputs found
Gendering translation: the 'female voice' in postcolonial Senegal
Using observations from translation theorists such as George Steiner, this article questions whether women's education in Senegal and separate male/female pools of communication have resulted in the development of distinct forms of writing. It examines extracts from texts by female Senegalese writers such as Mariama Bâ, Awa Ndiaye, and Ndeye Coumba Mbengue Diakhate in light of cultural and linguistic research, exploring the ways in which we can apply knowledge of Senegalese societies to our understanding of a text in pre-translation analysis. Along with extracts from both published and unpublished, new translations, the article also explores the way in which a translator may use research such as this to inform the translation process
Why African stock markets should formally harmonise and integrate their operations
Despite experiencing rapid growth in their number and size, existing evidence suggests that
African stock markets remain highly fragmented, small, illiquid and technologically weak,
severely affecting their informational efficiency. Therefore, this study attempts to empirically
ascertain whether African stock markets can improve their informational efficiency by formally
harmonising and integrating their operations. Employing parametric and non-parametric
variance-ratios tests on 8 African continent-wide and 8 individual national daily share price
indices from 1995 to 2011, we find that irrespective of the test employed, the returns of all the 8
African continent-wide indices investigated appear to have better normal distribution properties
compared with the 8 individual national share price indices examined. We also report evidence
of statistically significant weak form informational efficiency of the African continent-wide
share price indices over the individual national share price indices irrespective of the test statistic
used. Our results imply that formal harmonisation and integration of African stock markets may
improve their informational efficiency
Why African stock markets should formally harmonise and integrate their operations
Despite experiencing rapid growth in their number and size, existing evidence suggests that African stock markets remain highly fragmented, small, illiquid and technologically weak, severely affecting their informational efficiency. Therefore, this study attempts to empirically ascertain whether African stock markets can improve their informational efficiency by formally harmonising and integrating their operations. Employing parametric and non-parametric variance-ratios tests on 8 African continent-wide and 8 individual national daily share price indices from 1995 to 2011, we find that irrespective of the test employed, the returns of all the 8 African continent-wide indices investigated appear to have better normal distribution properties compared with the 8 individual national share price indices examined. We also report evidence of statistically significant weak form informational efficiency of the African continent-wide share price indices over the individual national share price indices irrespective of the test statistic used. Our results imply that formal harmonisation and integration of African stock markets may improve their informational efficiency
2Planning for Contingencies: A Decision-based Approach
A fundamental assumption made by classical AI planners is that there is no
uncertainty in the world: the planner has full knowledge of the conditions
under which the plan will be executed and the outcome of every action is fully
predictable. These planners cannot therefore construct contingency plans, i.e.,
plans in which different actions are performed in different circumstances. In
this paper we discuss some issues that arise in the representation and
construction of contingency plans and describe Cassandra, a partial-order
contingency planner. Cassandra uses explicit decision-steps that enable the
agent executing the plan to decide which plan branch to follow. The
decision-steps in a plan result in subgoals to acquire knowledge, which are
planned for in the same way as any other subgoals. Cassandra thus distinguishes
the process of gathering information from the process of making decisions. The
explicit representation of decisions in Cassandra allows a coherent approach to
the problems of contingent planning, and provides a solid base for extensions
such as the use of different decision-making procedures.Comment: See http://www.jair.org/ for any accompanying file
Universality of soft and collinear factors in hard-scattering factorization
Universality in QCD factorization of parton densities, fragmentation
functions, and soft factors is endangered by the process dependence of the
directions of Wilson lines in their definitions. We find a choice of directions
that is consistent with factorization and that gives universality between
e^+e^- annihilation, semi-inclusive deep-inelastic scattering, and the
Drell-Yan process. Universality is only modified by a time-reversal
transformation of the soft function and parton densities between Drell-Yan and
the other processes, whose only effect is the known reversal of sign for T-odd
parton densities like the Sivers function. The modifications of the definitions
needed to remove rapidity divergences with light-like Wilson lines do not
affect the results.Comment: 4 pages. Extra references. Text and references as in published
versio
Low density gas dynamic wall boundary conditions
Low density nozzles or large expansion ratio nozzles used in space experience rarefaction effects near their exit in the form of velocity slip and temperature jump at the walls. In addition, the boundary layers become very thick and there is a very strong viscous/inviscid interaction. For these reasons no existing design technique has been found to accurately predict the nozzle flow properties up to the nozzle exit. The objective of this investigation was to examine the slip boundary conditions and formulate them in a form appropriate for use with a full Navier-Stokes numerical code. The viscous/inviscid interaction would automatically be accounted for by using a compressible Navier-Stokes code. Through examination of the interaction of molecules with solid surfaces, a model for the distribution function of the reflected molecules has been determined and this distribution function has been used to develop a new slip boundary condition that can be shown to yield more realistic surface boundary conditions
QCD Factorization for Semi-Inclusive Deep-Inelastic Scattering at Low Transverse Momentum
We demonstrate a factorization formula for semi-inclusive deep-inelastic
scattering with hadrons in the current fragmentation region detected at low
transverse momentum. To facilitate the factorization, we introduce the
transverse-momentum dependent parton distributions and fragmentation functions
with gauge links slightly off the light-cone, and with soft-gluon radiations
subtracted. We verify the factorization to one-loop order in perturbative
quantum chromodynamics and argue that it is valid to all orders in perturbation
theory.Comment: 28 pages, figures include
Computation of nozzle flow fields using the PARC2D Navier-Stokes code
Supersonic nozzles which operate at low Reynolds numbers and have large expansion ratios have very thick boundary layers at their exit. This leads to a very strong viscous/inviscid interaction upon the flow within the nozzle and the traditional nozzle design techniques which correct the inviscid core with a boundary layer displacement do not accurately predict the nozzle exit conditions. A full Navier-Stokes code (PARC2D) was used to compute the nozzle flow field. Grids were generated using the interactive grid generator code TBGG. All computations were made on the NASA MSFC CRAY X-MP computer. Comparison was made between the computations and in-house wall pressure measurements for CO2 flow through a conical nozzle having an area ratio of 40. Satisfactory agreement existed between the computations and measurements for a stagnation pressure of 29.4 psia and stagnation temperature of 1060 R. However, agreement did not exist at a stagnation pressure of 7.4 psia. Several reasons for the lack of agreement are possible. The computational code assumed a constant gas gamma whereas gamma for CO2 varied from 1.22 in the plenum chamber to 1.38 at the nozzle exit. Finally, it is possible that condensation occurred during the expansion at the lower stagnation pressure
Information literacy skills for preservice teachers: do they transfer to K-12 classrooms?
This study surveyed current education majors (n=70) in two Kansas universities to gain a perspective on their understanding of Information Literacy (IL) concepts and skills and to learn whether they anticipated teaching such concepts to their future K‐12 students. School Media Specialists in the state were also surveyed (n=85) and asked to share their observations of teachers new to the profession as to their understanding and practice of IL. Results indicate many education students were not familiar with IL concept terminology and at least some new teachers in the state do not have a clear understanding or priority for teaching such skills in K‐12 classrooms
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