673 research outputs found
An Instrumental Music Method For Teaching Band Instruments In Classes In The Fourth And Fifth Grades
The Basic Instrumental Method is an attempt to provide music materials suitable for the teaching of instrumental music to children in the grade schools using the class method. Four approaches have been used in developing this method. They are the following: (1) The selection of six basic instruments suitable for small children, (2) arrangement of the material in such a manner as to allow for individual advancement, (3) a well graded presentation of rhythmic problems, and (4) a recognition of the psychological value of motivation
Contracts - Forum Selection - Absent Bad Faith, Fraud, or Overreaching, a Reasonable Forum Selection Clause in a Commercial Cruise Form Contract Is Enforceable - Carnival Cruise Lines, Inc. v. Shute, 111 S. Ct. 1522 (1991).
Multilingual Lexical Semantic Resources for Ontology Translation
We describe the integration of some multilingual language resources in ontological descriptions, with the purpose of providing ontologies, which are normally using concept labels in just one (natural) language, with multilingual facility in their design and use in the context of Semantic Web applications, supporting both the semantic annotation of textual documents with multilingual ontology labels and ontology extraction from multilingual text sources
Continuous Centrifuge Decelerator for Polar Molecules
Producing large samples of slow molecules from thermal-velocity ensembles is
a formidable challenge. Here we employ a centrifugal force to produce a
continuous molecular beam with a high flux at near-zero velocities. We
demonstrate deceleration of three electrically guided molecular species,
CHF, CFH, and CFCCH, with input velocities of up to
to obtain beams with velocities below
and intensities of several .
The centrifuge decelerator is easy to operate and can, in principle, slow down
any guidable particle. It has the potential to become a standard technique for
continuous deceleration of molecules.Comment: 5 pages, 4 figures; version accepted for publication in PR
Productive Partnerships for Food: Principles and Strategies
This article guides Extension educators in facilitating university-community partnerships in their locality. Principles and strategies for building effective and productive university-community partnerships around food that integrate research, education, and action are discussed, drawing from three examples. Partnerships are based on the principles of building off of community assets, diverse stakeholder involvement, guidance by community interests, and integration of research with practice. The partnership strategies encourage partners to develop common goals, clarify roles and responsibilities, develop protocols, commit the necessary resources, and create a flexible and trusting atmosphere. The need to balance multiple interests in a partnership is discussed
Observed spatiotemporal variability of boundary-layer turbulence over flat, heterogeneous terrain
In the spring of 2013, extensive measurements with multiple Doppler lidar systems were performed. The instruments were arranged in a triangle with edge lengths of about 3 km in a moderately flat, agriculturally used terrain in northwestern Germany. For 6 mostly cloud-free convective days, vertical velocity variance profiles were calculated. Weighted-averaged surface fluxes proved to be more appropriate than data from individual sites for scaling the variance profiles; but even then, the scatter of profiles was mostly larger than the statistical error. The scatter could not be explained by mean wind speed or stability, whereas time periods with significantly increased variance contained broader thermals. Periods with an elevated maximum of the variance profiles could also be related to broad thermals. Moreover, statistically significant spatial differences of variance were found. They were not influenced by the existing surface heterogeneity. Instead, thermals were preserved between two sites when the travel time was shorter than the large-eddy turnover time. At the same time, no thermals passed for more than 2 h at a third site that was located perpendicular to the mean wind direction in relation to the first two sites. Organized structures of turbulence with subsidence prevailing in the surroundings of thermals can thus partly explain significant spatial variance differences existing for several hours. Therefore, the representativeness of individual variance profiles derived from measurements at a single site cannot be assumed
Why Do Only Some Galaxy Clusters Have Cool Cores?
Flux-limited X-ray samples indicate that about half of rich galaxy clusters
have cool cores. Why do only some clusters have cool cores while others do not?
In this paper, cosmological N-body + Eulerian hydrodynamic simulations,
including radiative cooling and heating, are used to address this question as
we examine the formation and evolution of cool core (CC) and non-cool core
(NCC) clusters. These adaptive mesh refinement simulations produce both CC and
NCC clusters in the same volume. They have a peak resolution of 15.6 h^{-1} kpc
within a (256 h^{-1} Mpc)^3 box. Our simulations suggest that there are
important evolutionary differences between CC clusters and their NCC
counterparts. Many of the numerical CC clusters accreted mass more slowly over
time and grew enhanced cool cores via hierarchical mergers; when late major
mergers occurred, the CC's survived the collisions. By contrast, NCC clusters
experienced major mergers early in their evolution that destroyed embryonic
cool cores and produced conditions that prevented CC re-formation. As a result,
our simulations predict observationally testable distinctions in the properties
of CC and NCC beyond the core regions in clusters. In particular, we find
differences between CC versus NCC clusters in the shapes of X-ray surface
brightness profiles, between the temperatures and hardness ratios beyond the
cores, between the distribution of masses, and between their supercluster
environs. It also appears that CC clusters are no closer to hydrostatic
equilibrium than NCC clusters, an issue important for precision cosmology
measurements.Comment: 17 emulateapj pages, 17 figures, replaced with version accepted to
Ap
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