110,744 research outputs found
Adrian Caesar speaking at Alex Miller author: A Celebration, held at the National Library, Canberra, 30 October 2011 /
No full textTitle from information supplied by photographer.; Part of the collection: Alex Miller author: A Celebration, held at the National Library of Australia theatre, 30 October 2011.; Mode of access: Online.; Photographed by a staff member of the National Library of Australia
X-ray emission and internal kinematics in early-type galaxies - I. Observations
No full textLong-slit spectroscopic data for seven early-type galaxies with X-ray emission have been analysed to derive velocity dispersion and radial velocity profiles. Major axis rotation curves out to R ∼ Re are presented. Adding these new data to those available in the literature, we have built a sample of early-type galaxies with detected X-ray emission and known kinematics (central velocity dispersion σc and maximum rotational velocity νrot). This sample is used to investigate from an observational point of view the role of rotation and flattening in the X-ray emission, particularly with regard to the X-ray underluminosity of flat systems. The trend between the X-ray to optical ratio LX/LB, a measure of the hot gas content of the galaxies, and νrot/σc is L-shaped, with the X-ray-brightest objects confined at νrot/σc ≲ 0.4, for both Es and S0s. Neither for low or intermediate LX/LB nor for high LX/LB is there any clear correlation between X-ray emission and rotational properties. The trend between LX/LB and the ellipticity ∈ is also L-shaped, and resembles that between LX/LB and νrot/σc: there are no high-Lx/LB objects with high ∈. The relationships between LX/LB, the anisotropy parameter (ν/σ)*, and the isophotal shape parameter a4/a have also been analysed, but no significant trends have been found. The existence of a relation between νrot/σc and ∈ makes it difficult to assess on purely observational grounds whether rotation or flattening is the basis of the L-shaped trends found, although the trend with νrot/σc is sharper than that with ∈. Our observational findings are discussed in connection with the effects that rotation and flattening are predicted to have in the steady-state cooling flow and in the evolutionary wind/outflow/inflow scenarios for the hot gas behaviour. © 1997 RAS
Minimum Mean Cycle Instances
No full textThis data set contains some large real-world instances of the minimum mean cycle problem.
They are reported as the bonn01 to bonn09 instances in the paper:
Georgiadis, L., Goldberg, A. V., Tarjan, R. E., & Werneck, R. F.
"An experimental study of minimum mean cycle algorithms",
in 2009 Proceedings of the Eleventh Workshop on Algorithm Engineering and Experiments (ALENEX), pp. 1–13,
SIAM.
The instances arise in clock skew scheduling in chip design, e.g. see
Held, S., Korte, B., Rautenbach, D. and Vygen, J.
"Combinatorial optimization in VLSI design. Combinatorial Optimization",
in Combinatorial Optimization, NATO Science for Peace and Security Series - D: Information and Communication Security, pp. 33–96, 2011.
The clock skew scheduling problem in chip design is, given a directed graph G with edge delays d:E(G)-> R,
find a minimum cycle time T and arrival times (a schedule) a: V(G) -> R such that
a(v) + d(v,w) <= a(w) + T for all (v,w) in E(G).
G is called a latch graph. The nodes represent latches and registers, and the edges represent the longest signal paths between registers.
The problem of minimizing T is equivalent to maximizing the worst slack min{s(v,w) := a(w) + T - a(v) - d(v,w) | (v,w) in E(G)} for a fixed cycle time T.
The instances provided in the tar file below consist of directed graphs with edge costs c(v,w) = T - d(v,w),
i.e. edge slacks w.r.t. a zero-skew schedule where a = 0.
The maximum achievable worst slack by varying the schedule 'a' equals the value of a minimum mean cycle in (G,c).
Instance sizes range from 70346 nodes and 898220 edges to 1065274 nodes and 104340248 edges.
Other instances are very dense, e.g. 5361 nodes and 4169878 edges.
Note that the instances may not be strongly connected or even connected.
Format: Ignore empty lines and lines starting with '#', then:
1st line: number_of_nodes number_of_edges
next lines: from_node to_node edge_cost (i.e., zero skew slack
Models of Democracy
No full textThe first two editions of Models of Democracy have proven immensely popular among students and specialists worldwide. In a succinct and far-reaching analysis, David Held provides an introduction to central accounts of democracy from classical Greece to the present and a critical discussion of what democracy should mean today.
This new edition has been extensively revised and updated to take account of significant transformations in world politics, and a new chapter has been added on deliberative democracy which focuses not only on how citizen participation can be increased in politics, but also on how that participation can become more informed.
Like its predecessor, the third edition of Models of Democracy combines lucid exposition and clarity of expression with careful scholarship and originality, making it highly attractive to students and experts in the field. The third edition will prove essential reading for all those interested in politics, political theory and political philosophy.
A companion website to Models of Democracy provides lecturer and student resources; including a study guide, an interview with the author and links to develop the reader's understanding of the topics covered
JHK photometry of Leo I AGB and red giants (Held+, 2010)
No full textObservations of Leo I were carried out on 2005 April 19-20 using the NIR
Wide Field Camera (WFCAM) at the UKIRT at Mauna Kea, Hawaii
Legal regulation of prices in Tanzania : an examination of the Regulation of Prices Act 1973 as a tool of social change and development
No full textDrawing mainly from the Tazanian experience this study
attempts to review the principal issues in the legal regulation of
prices, by identifying both the general and specific importance
of law in this respect. The position I shall present is that
legal control is both necessary and desirable for the welfare
and social development of the people. The key issue is whether
the market-place will perform its function satisfactory: Will
it produce socially desirable results? If it will not, why will
it not? And will legal regulation help to do the job a little
better?
In an attempt to answer some of these questions,
first of all, outline the basic issues raised by the study in
the first Chapter. Then I examine the general case for price
controls - the theory about the controls, the motives and reasons
for their imposition and the manner in which they are effected
in different economic systems. This is done in Chapter Two. Relying
most on the available literature on the regulatory process, this
Chapter also looks at the relationship between law and economic
regulation and concludes that the effectiveness of law depends
on the existence of a conducive socio-economic environment. In
Chapter Three I describe the past record of price control laws
in Tanzania. I conclude that despite the failure in the past,
the controls still constitute an important policy instrument
in the transition to socialism. In Chapters Four and Five I describe
the manner in which the current regulations are implemented and
the problems encountered. I conclude that the operational performance
of the controls is constrained by internal and external influences on the economic and political life of the country. In the concluding
Chapter I assess the impact of the controls: Do the controls
work? Do people buy goods at the controlled prices? Why today
the controls are almost popularly accepted as worthwhile? I conclude
that while there may be no measurable economic gains derived
by consumers, the controls have a stabilising effect on the social
and political front. In the final section I argue that the
future success of the legislation depends on creating a correspondence
between the economic structures and the control system. What
makes the controls ineffective is not so much defects in the
law but the contradictions between the orientation of and functioning
of the economic system and the ideological commitment
Letter to Dr. George L. Haller re: attached letter from second author in praise of L.--Correspondence
No full textLetter to Dr. George L. Haller re: attached letter from second author in praise of L. D. Miles' contribution to the Value Engineering Conference held in Boston
Author\u27s account of a dinner party that she unexpectedly held for Hilton Kramer
No full textAuthor\u27s account of a dinner party that she unexpectedly held for Hilton Kramer, the art critic, and his wife Esta
A union list of New Jersey annual publications in the library collections of the New Jersey Historical Society and Rutgers University
No full textA fully subject indexed guide to hundreds of annual publications held at the New Jersey Historical Society and Rutgers University Libraries.compiled by Ronald L. Becker, E. Richard McKinstr
Self-archiving practice and the influence of publisher policies in the social sciences
No full textAuthors in different disciplines exhibit very different behaviours on the so-called ‘green’ road to open access, i.e. self-archiving. This study looks at the self-archiving behaviour of authors publishing in leading journals in six social science disciplines. It tests the hypothesis that authors are self-archiving according to the norms of their respective disciplines rather than following self-archiving policies of publishers, and that, as a result, they are self-archiving significant numbers of publisher PDF versions. It finds significant levels of
self-archiving, as well as significant self-archiving of
the publisher PDF version, in all the disciplines
investigated. Publishers’ self-archiving policies have
no influence on author self-archiving practice
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