6,995 research outputs found
Index to Library Trends Volume 11
published or submitted for publicatio
Demographic Change, Social Security Systems, and Savings
In theory, improvements in healthy life expectancy should generate increases in the average age of retirement, with little effect on savings rates. In many countries, however, retirement incentives in social security programs prevent retirement ages from keeping pace with changes in life expectancy, leading to an increased need for life-cycle savings. Analyzing a cross-country panel of macroeconomic data, we find that increased longevity raises aggregate savings rates in countries with universal pension coverage and retirement incentives, though the effect disappears in countries with pay-as-you-go systems and high replacement rates
Topological Twistons in Crystalline Polyethylene
We introduce an alternate model to describe twistons in crystalline
polyethylene. The model couples torsional and longitudinal degrees of freedom
and appears as an extension of a model that describes only the torsional
motion. We find exact solutions that describe stable topological twistons, in
good agreement with the torsional and longitudinal interactions in
polyethylene.Comment: Latex, 10 pages; some stylistic corrections, to appear in Chemical
Physics Letter
A Reexamination of the Temporal Dimension in Property and Takings
Prof. Marla Mansfield, Professor of Law and NELPI Fellow The University of Tulsa College of Law, discusses the time aspects of takings
A Primer on Public Land Law
This article will examine the major missions and jurisdictions of the main federal land management systems, namely the public domain, the national forests, national parks, wildlife refuges, and wilderness areas. To introduce this examination, the constitutional provisions which justify the governing statutes will be explored. Additionally, as a prelude to the specific statutory mandates, this Article will review the system of reservations, withdrawals, and classifications. Preemption doctrine also will be addressed because states often desire to regulate activities on federal lands. Finally, the Article will distinguish between multiple use and dominant use
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