8,756 research outputs found
STATUS OF CHECKOUT TECHNOLOGY
The author describes the various types of computerized checkout systems available and the relative merits of these systems.Agribusiness,
NATIONAL ORGANIC CERTIFICATION PROGRAM STATUS OCTOBER 1994
Agricultural and Food Policy,
Alternative Venues: An EFL Writing Center Outside the University
Recent years have seen an increasing presence of writing centers in diverse English as a Foreign Language (EFL) settings, particularly in East Asia and in Europe (Bräuer; Chang). These new centers face familiar issues such as a lack of resources, the need to adapt pedagogy to the local context (Reichelt et. al.; Broekhoff), and ideological resistance to the idea of peer learning (Turner) or even providing support for writing at all (Bräuer). In some cases, these difficulties may force potential writing centers to seek a platform entirely outside of the university, bringing both challenges and new possibilities as the center adapts to a community setting and clientele (Rousculp). This article describes the founding of a writing center in Niš, Serbia, in an alternative venue - an American Embassy-funded resource center. This institution has offered significant advantages, including a central location and strong preexisting member base, but it has also shifted the writing center’s focus away from university students towards the diverse writing needs of the broader community. This article discusses how these factors have affected the writing center’s mission, the tutors’ training and experiences, and the development of local pedagogy and concludes with suggestions for other writing center administrators on working in such alternative spaces.University Writing Cente
Pre-Processing and Post-Processing in Group-Cluster Mergers
Galaxies in clusters are more likely to be of early type and to have lower
star formation rates than galaxies in the field. Recent observations and
simulations suggest that cluster galaxies may be `pre-processed' by group or
filament environments and that galaxies that fall into a cluster as part of a
larger group can stay coherent within the cluster for up to one orbital period
(`post-processing'). We investigate these ideas by means of a cosmological
-body simulation and idealized -body plus hydrodynamics simulations of a
group-cluster merger. We find that group environments can contribute
significantly to galaxy pre-processing by means of enhanced galaxy-galaxy
merger rates, removal of galaxies' hot halo gas by ram pressure stripping, and
tidal truncation of their galaxies. Tidal distortion of the group during infall
does not contribute to pre-processing. Post-processing is also shown to be
effective: galaxy-galaxy collisions are enhanced during a group's pericentric
passage within a cluster, the merger shock enhances the ram pressure on group
and cluster galaxies, and an increase in local density during the merger leads
to greater galactic tidal truncation.Comment: Accepted for publication in MNRAS. 25 pages, 21 figure
Abstract Ces\`aro spaces: Integral representations
The Ces\`aro function spaces , , have
received renewed attention in recent years. Many properties of are
known. Less is known about when the Ces\`aro operator takes its values
in a rearrangement invariant (r.i.) space other than . In this paper
we study the spaces via the methods of vector measures and vector
integration. These techniques allow us to identify the absolutely continuous
part of and the Fatou completion of ; to show that is
never reflexive and never r.i.; to identify when is weakly sequentially
complete, when it is isomorphic to an AL-space, and when it has the
Dunford-Pettis property. The same techniques are used to analyze the operator
; it is never compact but, it can be completely continuous.Comment: 21 page
Detecting dark matter-dark energy coupling with the halo mass function
We use high-resolution simulations of large-scale structure formation to
analyze the effects of interacting dark matter and dark energy on the evolution
of the halo mass function. Using a chi-square likelihood analysis, we find
significant differences in the mass function between models of coupled dark
matter-dark energy and standard concordance cosmology Lambda-CDM out to
redshift z=1.5. We also find a preliminary indication that the Dark Energy
Survey should be able to distinguish these models from Lambda-CDM within its
mass and redshift contraints. While we can distinguish the effects of these
models from Lambda-CDM cosmologies with different fundamental parameters, DES
will require independent measurements of sigma-8 to confirm these effects.Comment: 5 pages, 3 figures, responded to referee comments, accepted by Ap
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