Results 31 to 40 of about 18,279 (230)

The square-kagome quantum Heisenberg antiferromagnet at high magnetic fields: The localized-magnon paradigm and beyond [PDF]

open access: yes, 2013
We consider the spin-1/2 antiferromagnetic Heisenberg model on the two-dimensional square-kagome lattice with almost dispersionless lowest magnon band. For a general exchange coupling geometry we elaborate low-energy effective Hamiltonians which emerge ...
Honecker A.   +9 more
core   +2 more sources

Matching Mechanisms for Refugee Resettlement

open access: yesThe American Economic Review, 2023
Current refugee resettlement processes account for neither the preferences of refugees nor the priorities of hosting communities. We introduce a new framework for matching with multidimensional knapsack constraints that captures the (possibly ...
David Delacrétaz   +2 more
semanticscholar   +1 more source

Integration of immigrants and the role of policy in the OECD countries

open access: yesEconomics and Business Review, 2020
With the increase in global spatial mobility the importance of migration policy (including integration policy) is increasing day by day, both in developed countries and new market economies.
Woźniak Katarzyna
doaj   +1 more source

Trans-dimensional inversion of modal dispersion data on the New England Mud Patch [PDF]

open access: yes, 2019
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Bonnel, J., Dosso, S. E., Eleftherakis, D., & Chapman, N. R.
Bonnel, Julien   +3 more
core   +2 more sources

Can You Move to Opportunity? Evidence from the Great Migration

open access: yesThe American Economic Review, 2022
This paper shows that racial composition shocks during the Great Migration (1940–1970) reduced the gains from growing up in the northern United States for Black families and can explain 27 percent of the region’s racial upward mobility gap today.
Ellora Derenoncourt
semanticscholar   +1 more source

Factors Affecting Mental Models in CD-ROM Searching: A Preliminary Investigation [PDF]

open access: yesJournal of Library and Information Studies, 2000
This article attempts to investigate possible factors affecting mental models in CD-ROM searching. The subjects were college and graduate students of National Taiwan University. They used PsyLIT CD-ROM database to search their own questions.
Mu-Hsuan Huang
doaj   +1 more source

Accreditation and Standards of Library and Information Science Education in the United States [PDF]

open access: yesJournal of Library and Information Studies, 2000
Accreditation is the main means to maintain good quality of library and information science education in the United States . Standards for accreditation are used to evaluate master’s programs in library and information science.
Mei-Ling Wang
doaj   +1 more source

Operator Product Expansion of the Lowest Weight CPOs in N=4 SYM_4 at Strong Coupling [PDF]

open access: yes, 2000
We present a detailed analysis of the 4-point functions of the lowest weight chiral primary operators $O^{I} \sim \tr \phi^{(i}\phi^{j)}$ in $\N =4$ SYM$_4$ at strong coupling and show that their structure is compatible with the predictions of AdS/CFT ...
Anastasios C. Petkou   +53 more
core   +3 more sources

The comparison between LAC and ALA [PDF]

open access: yesJournal of Library and Information Studies, 2000
A good library association serves its members, improves the librarianship, andhelps library institutions achieving their missions. This article describes the history,missions and goals, organization structure, membership, financial sources,professional ...
Tzu-Heng Chiu
doaj   +1 more source

The complete LQG propagator: I. Difficulties with the Barrett-Crane vertex [PDF]

open access: yes, 2007
Some components of the graviton two-point function have been recently computed in the context of loop quantum gravity, using the spinfoam Barrett-Crane vertex. We complete the calculation of the remaining components.
A. Ashtekar   +7 more
core   +2 more sources

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