56,324 research outputs found
A survey of eight successful enrichment programs.
Thesis (Ed.M.)--Boston Universit
Adam Smith Meets an Index of Specialization in International Trade
Development economists agree that increasing export diversification is a concomitant to economic development. An accepted explanation for Africa’s export stagnation is its dependence on monoculture, and on small number of commodities. Recently a large body of literature focuses on the relationship between economic growth and export specialization. However, there does not exist one generally acceptable measure or index for the concept of “Specialization in International Trade”. This paper suggest one such measure for specialization and its theoretical and conceptual framework are developed and applied to Singapore, South Korea, Malaysia, Mexico, Tunisia and Morocco, during the years of their take offs.Trade Specialization Indices; Development Theory; Developing Country Export Compositions; International Trade Theory; Trade in Manufactures; Trade and Transformation.
Probing the structure of entanglement with entanglement moments
We introduce and define a set of functions on pure bipartite states called
entanglement moments. Usual entanglement measures tell you if two systems are
entangled, while entanglement moments tell you both if and how two systems are
entangled. They are defined with respect to a measurement basis in one system
(e.g., a measuring device), and output numbers describing how a system (e.g., a
qubit) is entangled with that measurement basis. The moments utilize different
distance measures on the Hilbert space of the measured system, and can be
generalized to any N-dimensional Hilbert space. As an application, they can
distinguish between projective and non-projective measurements. As a particular
example, we take the Rabi model's eigenstates and calculate the entanglement
moments as well as the full distribution of entanglement.Comment: 5 pages, 5 figure
Active Object Localization in Visual Situations
We describe a method for performing active localization of objects in
instances of visual situations. A visual situation is an abstract
concept---e.g., "a boxing match", "a birthday party", "walking the dog",
"waiting for a bus"---whose image instantiations are linked more by their
common spatial and semantic structure than by low-level visual similarity. Our
system combines given and learned knowledge of the structure of a particular
situation, and adapts that knowledge to a new situation instance as it actively
searches for objects. More specifically, the system learns a set of probability
distributions describing spatial and other relationships among relevant
objects. The system uses those distributions to iteratively sample object
proposals on a test image, but also continually uses information from those
object proposals to adaptively modify the distributions based on what the
system has detected. We test our approach's ability to efficiently localize
objects, using a situation-specific image dataset created by our group. We
compare the results with several baselines and variations on our method, and
demonstrate the strong benefit of using situation knowledge and active
context-driven localization. Finally, we contrast our method with several other
approaches that use context as well as active search for object localization in
images.Comment: 14 page
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