7,867 research outputs found
Highlights of the Foundation Center's 2000 Study: International Grantmaking II - An Update on U.S. Foundation Trends
International Grantmaking II: An Update on U.S. Foundation Trendsrepresents the Foundation Center's second examination of the role of private grantmakers in funding cross-border and U.S.-based international programs. The Center's first study of international giving trends, International Grantmaking: A Report on U.S. Foundation Trends, mapped funding patterns from 1990, the start of the post-Cold War era, to 1994. This update carries the analysis through 1998. Both the original report and this update were developed in collaboration with the Council on Foundations, a nonprofit membership association of foundation and corporate donors
Understanding Foundation Expenses: Focus on Illinois
Understanding Foundation Expenses: Focus on Illinois defines and delineates charitable (programrelated) administrative and operating expenses, which are those that count toward a foundation's payout requirement. The report addresses specific questions such as: Which foundation costs are included in charitable administrative expenses? What are the limitations of Form 990-PF for reporting expenditures? How are charitable administrative expense levels measured? What are the most important factors driving expense levels? It also offers first-ever multi-year trend information (2008– 2010) detailing the expense practices of large Illinois independent foundations and compares them to the national experience.Intended for foundation leaders, policymakers, advocates, journalists, and the general public, this brief serves as a key resource for understanding foundation operating and administrative expenses and as an unbiased source of facts on actual practice in Illinois
Developments in space power components for power management and distribution
Advanced power electronic components development for space applications is discussed. The components described include transformers, inductors, semiconductor devices such as transistors and diodes, remote power controllers, and transmission lines
High-current, high-frequency capacitors
The NASA Lewis high-current, high-frequency capacitor development program was conducted under a contract with Maxwell Laboratories, Inc., San Diego, California. The program was started to develop power components for space power systems. One of the components lacking was a high-power, high-frequency capacitor. Some of the technology developed in this program may be directly usable in an all-electric airplane. The materials used in the capacitor included the following: the film is polypropylene, the impregnant is monoisopropyl biphenyl, the conductive epoxy is Emerson and Cuming Stycast 2850 KT, the foil is aluminum, the case is stainless steel (304), and the electrode is a modified copper-ceramic
Foundation Funding for the Humanities: An Overview of Current and Historical Trends
Foundation Funding for the Humanities: An Overview of Current and Historical Trends, finds that funding for fields such as art history, history and archeology, languages and linguistics, area studies, and the humanistic social sciences increased two and one-half times (149.8 percent) from 335 million in 2002. At the same time the report notes that, despite the overall increase, some scholarly disciplines actually lost ground over the ten year period. Support for the humanities grew more slowly than overall foundation giving during this period (up 199.8 percent), and the share of giving for the humanities slipped from 2.5 percent in the early 1990s to 2.1 percent in 2002
Highlights of the Foundation Center's 1999 Study: Arts Funding 2000 - Funder Perspectives on Current And Future Trends
Arts Funding 2000: Funder Perspectives on Current and Future Trends represents the Foundation Center's fourth examination of the role of foundation and corporate grantmakers in supporting arts and culture. Developed in partnership with Grantmakers in the Arts (GIA), the new study explores the current practice of arts funding viewed through the eyes of grantmakers. GIA's purpose in sponsoring this research was to learn about the changing context for arts funding and about the ways grantmakers are responding to changes in the arts field and within their own organization
Perturbative and Numerical Methods for Stochastic Nonlinear Oscillators
Interferometric gravitational wave detectors are devoted to pick up the
effect induced on masses by gravitational waves. The variations of the length
dividing two mirrors is measured through a laser interferometric technique. The
Brownian motion of the masses related to the interferometer room temperature is
a limit to the observation of astrophysical signals. It is referred to as
thermal noise and it affects the sensitivity of both the projected and the
future generation interferometers. In this paper we investigate the relevance
of small non-linear effects and point out their impact on the sensitivity curve
of interferometric gravitational wave detectors (e.g. VIRGO, LIGO, GEO, ...)
through perturbative methods and numerical simulations. We find that in the
first order approximation the constants characterizing the power spectrum
density (PSD) are renormalized but it retains its typical shape. This is due to
the fact that the involved Feynman diagrams are of tadpole type. Higher order
approximations are required to give rise to up-conversion effects. This result
is predicted by the perturbative approach and is in agreement with the
numerical results obtained by studying the system's non-linear response by
numerically simulating its dynamics.Comment: 12 pages, REVTeX + 7 PostScript figure
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