4,094 research outputs found
Topological Connectedness and Behavioral Assumptions on Preferences: A Two-Way Relationship
This paper offers a comprehensive treatment of the question as to whether a
binary relation can be consistent (transitive) without being decisive
(complete), or decisive without being consistent, or simultaneously
inconsistent or indecisive, in the presence of a continuity hypothesis that is,
in principle, non-testable. It identifies topological connectedness of the
(choice) set over which the continuous binary relation is defined as being
crucial to this question. Referring to the two-way relationship as the
Eilenberg-Sonnenschein (ES) research program, it presents four synthetic, and
complete, characterizations of connectedness, and its natural extensions; and
two consequences that only stem from it. The six theorems are novel to both the
economic and the mathematical literature: they generalize pioneering results of
Eilenberg (1941), Sonnenschein (1965), Schmeidler (1971) and Sen (1969), and
are relevant to several applied contexts, as well as to ongoing theoretical
work.Comment: 47 pages, 4 figure
Food Production; Can it be Used as a Tool in Empowerment of Rural Women? A Case Study from Turkey
This study contains the basics on certain problems that food producing-as an earning activity that is used empowerment of women- face in rural areas and some advice on how those difficulties could be overcome. The results of âWinpeaceâ project are evaluated from the point of view of women empowerment and food production. After the project, women faced several problems. Those problems are negotiated by the help of the strength and weaknesses in the presence head of the cooperative. The discussion results are highly appreciable to evolve effective thoughts about reinforcing the rural women.food production in rural areas, women, empowerment
Geometric explanation of anomalous finite-size scaling in high dimensions
We give an intuitive geometric explanation for the apparent breakdown of
standard finite-size scaling in systems with periodic boundaries above the
upper critical dimension. The Ising model and self-avoiding walk are simulated
on five-dimensional hypercubic lattices with free and periodic boundary
conditions, by using geometric representations and recently introduced
Markov-chain Monte Carlo algorithms. We show that previously observed anomalous
behaviour for correlation functions, measured on the standard Euclidean scale,
can be removed by defining correlation functions on a scale which correctly
accounts for windings.Comment: 5 pages, 4 figure
Integrable discrete systems on R and related dispersionless systems
The general framework for integrable discrete systems on R in particular
containing lattice soliton systems and their q-deformed analogues is presented.
The concept of regular grain structures on R, generated by discrete
one-parameter groups of diffeomorphisms, through which one can define algebras
of shift operators is introduced. Two integrable hierarchies of discrete chains
together with bi-Hamiltonian structures are constructed. Their continuous limit
and the inverse problem based on the deformation quantization scheme are
considered.Comment: 19 page
Godel-type Metrics in Various Dimensions II: Inclusion of a Dilaton Field
This is the continuation of an earlier work where Godel-type metrics were
defined and used for producing new solutions in various dimensions. Here a
simplifying technical assumption is relaxed which, among other things,
basically amounts to introducing a dilaton field to the models considered. It
is explicitly shown that the conformally transformed Godel-type metrics can be
used in solving a rather general class of Einstein-Maxwell-dilaton-3-form field
theories in D >= 6 dimensions. All field equations can be reduced to a simple
"Maxwell equation" in the relevant (D-1)-dimensional Riemannian background due
to a neat construction that relates the matter fields. These tools are then
used in obtaining exact solutions to the bosonic parts of various supergravity
theories. It is shown that there is a wide range of suitable backgrounds that
can be used in producing solutions. For the specific case of (D-1)-dimensional
trivially flat Riemannian backgrounds, the D-dimensional generalizations of the
well known Majumdar-Papapetrou metrics of general relativity arise naturally.Comment: REVTeX4, 17 pp., no figures, a few clarifying remarks added and
grammatical errors correcte
Lifted Worm Algorithm for the Ising Model
We design an irreversible worm algorithm for the zero-field ferromagnetic
Ising model by using the lifting technique. We study the dynamic critical
behavior of an energy estimator on both the complete graph and toroidal grids,
and compare our findings with reversible algorithms such as the
Prokof'ev-Svistunov worm algorithm. Our results show that the lifted worm
algorithm improves the dynamic exponent of the energy estimator on the complete
graph, and leads to a significant constant improvement on toroidal grids.Comment: 9 pages, 6 figure
Food Production; Can it be Used as a Tool in Empowerment of Rural Women? A Case Study from Turkey
This study contains the basics on certain problems that food producing-as an earningactivity that is used empowerment of women- face in rural areas and some advice onhow those difficulties could be overcome. The results of âWinpeaceâ project areevaluated from the point of view of women empowerment and food production. Afterthe project, women faced several problems. Those problems are negotiated by the helpof the strength and weaknesses in the presence head of the cooperative. The discussionresults are highly appreciable to evolve effective thoughts about reinforcing the ruralwomen
Histopathological image analysis : a review
Over the past decade, dramatic increases in computational power and improvement in image analysis algorithms have allowed the development of powerful computer-assisted analytical approaches to radiological data. With the recent advent of whole slide digital scanners, tissue histopathology slides can now be digitized and stored in digital image form. Consequently, digitized tissue histopathology has now become amenable to the application of computerized image analysis and machine learning techniques. Analogous to the role of computer-assisted diagnosis (CAD) algorithms in medical imaging to complement the opinion of a radiologist, CAD algorithms have begun to be developed for disease detection, diagnosis, and prognosis prediction to complement the opinion of the pathologist. In this paper, we review the recent state of the art CAD technology for digitized histopathology. This paper also briefly describes the development and application of novel image analysis technology for a few specific histopathology related problems being pursued in the United States and Europe
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