1,979 research outputs found
The role of earth-based observations of asteroids during the next decade
Present reconnaissance studies of asteroids shift ground based programs to more specialized, intensive studies of selected individual bodies and special classes. Two powerful techniques--radar and mid-IR spectroscopy--have yet to be widely applied to asteroids; high priority should be given to: (1) search programs with a large Schmidt telescope (especially for Mars- and Earth-approaching bodies); (2) a moderate resolution visible and near-IR spectrophotometric survey of at least half the asteroids; (3) high resolution spectrophotometry and radiometry of unusual objects; (4) radar studies of representative main belt asteroids; and (5) application of the full complement of astrophysical techniques to objects of high scientific interest and to potential space mission targets. The infrared astronomical satellite also has high potential for contributing to asteroid science
Corrigendum to "A new modeling tool for the diffusion of gases in ice or amorphous binary mixture in the polar stratosphere and the upper troposphere" published in Atmos. Chem. Phys., 10, 3099â3105, 2010
No abstract available
2002-05 The ARAR Error Model for Univariate Time Series and Distributed Lag Models
We show that the use of prior information derived from former empirical findings and/or subject matter theory regarding the lag structure of the observable variables together with an AR process for the error terms can produce univariate and single equation models that are intuitively appealing, simple to implement and work well in practice
Innovation Influences Liking for Chocolates Among Neophilic Consumers
The fear of trying new foods is a major barrier for entry for innovative ingredients, foods, flavors, or cuisines into the market place. We explored the relationship between perceived innovation and liking for chocolates and degree of neophobia. Line scales were used to measure: innovation, liking, and perceived dollar value for three chocolate confections. One was a traditional confection (palette dâČor), and two others were designed to be more innovative (white miso with dark chocolate and white chocolate with candied black olive). An analysis of variance found that panelists (n=44) perceived significant (p\u3c0.01) differences among the chocolates in innovation, and liking, but not dollar value or estimated caloric content. The chocolate rated as the most innovative was also rated as the least liked. This finding is significant since the mean neophobia score of our subjects was quite low and very few of them would have been classified as neophobic. This current work suggests that acceptance of innovative new foods is dependent, in part, upon factors that transcend neophobic mindsets. Chefs and product developers should be aware of the fact that even among neophilic consumers who are quite willing to consume novel foods, there is a possibility that a food might be too innovative, resulting in a negative impact on liking
Harold Jeffreys's Theory of Probability Revisited
Published exactly seventy years ago, Jeffreys's Theory of Probability (1939)
has had a unique impact on the Bayesian community and is now considered to be
one of the main classics in Bayesian Statistics as well as the initiator of the
objective Bayes school. In particular, its advances on the derivation of
noninformative priors as well as on the scaling of Bayes factors have had a
lasting impact on the field. However, the book reflects the characteristics of
the time, especially in terms of mathematical rigor. In this paper we point out
the fundamental aspects of this reference work, especially the thorough
coverage of testing problems and the construction of both estimation and
testing noninformative priors based on functional divergences. Our major aim
here is to help modern readers in navigating in this difficult text and in
concentrating on passages that are still relevant today.Comment: This paper commented in: [arXiv:1001.2967], [arXiv:1001.2968],
[arXiv:1001.2970], [arXiv:1001.2975], [arXiv:1001.2985], [arXiv:1001.3073].
Rejoinder in [arXiv:0909.1008]. Published in at
http://dx.doi.org/10.1214/09-STS284 the Statistical Science
(http://www.imstat.org/sts/) by the Institute of Mathematical Statistics
(http://www.imstat.org
VerĂ€nderungen der SchilddrĂŒsenfunktion bei Behandlung von Brandwunden mit Polyvinylpyrrolidon-Jod-Komplex
Asset Management in Volatile Markets
The 27th SUERF Colloquium in Munich in June 2008: New Trends in Asset Management: Exploring the Implications was already topical in the Summer of 2008. The subsequent dramatic events in the Autumn of 2008 made the presentations in Munich even more relevant to investors and bankers that want to understand what happens in their investment universe. In the present SUERF Study, we have collected a sample of outstanding colloquium contributions under the fitting headline: Asset Management in Volatile Markets.derivatives, financial innovation, asset management, finance-growth-nexus; Relative Value Strategy, Pair Trading, Slippage, Implementation Shortfall, Asset Management, Fin4Cast
The Orbital and Absolute Magnitude Distributions of Main Belt Asteroids
We have developed a model-independent analytical method for debiasing the
four-dimensional (a,e,i,H) distribution obtained in any asteroid observation
program and have applied the technique to results obtained with the 0.9m
Spacewatch Telescope. From 1992 to 1995 Spacewatch observed ~3740 deg^2 near
the ecliptic and made observations of more than 60,000 asteroids to a limiting
magnitude of V~21. The debiased semi-major axis and inclination distributions
of Main Belt asteroids in this sample with 11.5<= H <16 match the distributions
of the known asteroids with H <11.5. The absolute magnitude distribution was
studied in the range 8< H <17.5. We have found that the set of known asteroids
is complete to about absolute magnitudes 12.75, 12.25 and 11.25 in the inner,
middle and outer regions of the belt respectively. The number distribution as a
function of absolute magnitude cannot be represented by a single power-law
(10^{alpha H}) in any region. We were able to define broad ranges in H in each
part of the belt where alpha was nearly constant. Within these ranges of H the
slope does not correspond to the value of 0.5 expected for an equilibrium
cascade in self-similar collisions (Dohnanyi, 1971). The value of alpha varies
with absolute magnitude and shows a `kink' in all regions of the belt for H~13.
This absolute magnitude corresponds to a diameter ranging from about 8.5 to
12.5 km depending on the albedo or region of the belt.Comment: 33 pages, 6 figures, 6 tables. published in Icaru
Effects of hunger state on flavour pleasantness conditioning at home: flavour-nutrient learning vs. flavour-flavour learning
This study examined acquired liking of flavour preferences through flavour-flavour and flavour-nutrient learning under hungry or sated conditions in a naturalistic setting. Each participant consumed one of three versions of a test drink at home either before lunch or after lunch: minimally sweetened (CONTROL: 3% sucrose, 40kcal), artificially sweetened (3% sucrose 40kcal plus artificial sweeteners ASPARTAME) and sucrose-sweetened (SUCROSE: 9.9% sugar, 132kcal). The test drink was an uncarbonated peach-flavoured iced tea served in visually identical drink cans (330ml). Participants preselected as "sweet likers" evaluated the minimally sweetened flavoured drink (conditioned stimulus, CS) in the same state (hungry or sated) in which they consumed the test drink at home. Overall, liking for the CS flavour increased in participants who consumed the SUCROSE drink, however, this increase in liking was significantly larger when tested and trained hungry than sated, consistent with a flavour-nutrient model. Overall increases in pleasantness for the CS flavour in participants who consumed the SUCROSE drink when sated or the ASPARTAME drink independent of hunger state, suggest that flavour-flavour learning also occurred. These results are discussed in light of current learning models of flavour preference
A revised asteroid polarization-albedo relationship using WISE/NEOWISE data
We present a reanalysis of the relationship between asteroid albedo and
polarization properties using the albedos derived from the Wide-field Infrared
Survey Explorer. We find that the function that best describes this relation is
a three-dimensional linear fit in the space of log(albedo)-log(polarization
slope)-log(minimum polarization). When projected to two dimensions the
parameters of the fit are consistent with those found in previous work. We also
define p* as the quantity of maximal polarization variation when compared with
albedo and present the best fitting albedo-p* relation. Some asteroid taxonomic
types stand out in this three-dimensional space, notably the E, B, and M Tholen
types, while others cluster in clumps coincident with the S- and C-complex
bodies. We note that both low albedo and small (D<30 km) asteroids are
under-represented in the polarimetric sample, and we encourage future
polarimetric surveys to focus on these bodies.Comment: 16 pages, Accepted to Ap
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