505 research outputs found
An Examination of Critical Behaviors and Functions Exhibited by Teacher-Coordinators in Cooperative Work Training Programs
Field trials of a NASA-developed mobile satellite terminal
Various field trials have been performed to validate and optimize the technologies developed by the Mobile Satellite Experiment (MSAT-X). For each of the field experiments performed, a brief description of the experiment is provided, followed by a summary of the experimental results. Emphasis is placed on the two full scale land mobile and aeronautical mobile experiments. Experiments planned for the near future are also presented
Training of Crisis Mappers and Map Production from Multi-sensor Data: Vernazza Case Study (Cinque Terre National Park, Italy)
This aim of paper is to presents the development of a multidisciplinary project carried out by the cooperation between Politecnico di Torino and ITHACA (Information Technology for Humanitarian Assistance, Cooperation and Action). The goal of the project was the training in geospatial data acquiring and processing for students attending Architecture and Engineering Courses, in order to start up a team of "volunteer mappers". Indeed, the project is aimed to document the environmental and built heritage subject to disaster; the purpose is to improve the capabilities of the actors involved in the activities connected in geospatial data collection, integration and sharing. The proposed area for testing the training activities is the Cinque Terre National Park, registered in the World Heritage List since 1997. The area was affected by flood on the 25th of October 2011. According to other international experiences, the group is expected to be active after emergencies in order to upgrade maps, using data acquired by typical geomatic methods and techniques such as terrestrial and aerial Lidar, close-range and aerial photogrammetry, topographic and GNSS instruments etc.; or by non conventional systems and instruments such us UAV, mobile mapping etc. The ultimate goal is to implement a WebGIS platform to share all the data collected with local authorities and the Civil Protectio
An Empirical Investigation of Factors that Improve Employeesâ Satisfaction in a Municipality Allowing the Use of BYOD
Municipalities all over the world are now encouraging employees to use Bring Your Own Device (BYOD) to perform their daily work tasks and activities to improve employee-self growth, employee self-advancement, job promotion, job security, job satisfaction, and employee performance. To the best of our knowledge, there are no published studies that have investigated factors that improve Employeesâ Satisfaction for Municipality that allows the use of BYOD. To fill the gap in the literature, we use the job characteristics model and the equitable needs fulfillment model to explain factors that improve employeesâ satisfaction when using BYOD. We also, present the research and practical implications
Gas and Dust in the Taffy Galaxies: Ugc12914/15
We present a comprehensive study of the dust and gas properties in the
after-head-on-collision UGC12914/15 galaxy system using multi-transition CO
data and SCUBA sub-mm continuum images at both 450 and 850m. CO(3-2) line
emission was detected in the disks of UGC 12914 and UGC 12915 as well as in a
bridge connecting the two galaxies. Dust emission at 450m was detected for
the first time in the two galactic disks and in the connecting bridge. Using an
LVG excitation analysis model we have obtained good estimates of the physical
parameters in different regions of this system and the amount of molecular gas
was found to be 3-4 times lower than that estimated by other investigators
using the standard Galactic CO-to-H2 conversion factor. Comparing with the dust
mass derived from the SCUBA data, we found that the gas-to-dust ratio was
comparable to the Galactic value in the two galaxy disks but a factor of ~3
higher in the bridge. The physical condition of the molecular gas in the bridge
is comparable to that in the diffuse clouds in our Galaxy. Our result is
consistent with the scenario that the bridge molecular gas originated from the
disk molecular clouds and has been drawn out of the galactic disks due to
direct cloud-cloud collision.
Our data indicate that the global star formation efficiency (SFE) in UGC
12915 is comparable to that of normal spiral galaxies, and the SFE is 40% lower
in UGC 12914 than in UGC 12915. Little star formation activity was found in the
bridge except in an HII region adjacent to the disk of UGC 12915.Comment: Accepted by AJ. 45 pages, 10 figures (Fig 1-5 and Fig 7 in gif
format
A non-conserved amino acid variant regulates differential signalling between human and mouse CD28
CD28 superagonistic antibodies (CD28SAb) can preferentially activate and expand immunosuppressive
regulatory T cells (Treg) in mice. However, pre-clinical trials assessing
CD28SAbs for the therapy of autoimmune diseases reveal severe systemic inflammatory
response syndrome in humans, thereby implying the existence of distinct signalling abilities
between human and mouse CD28. Here, we show that a single amino acid variant within the
C-terminal proline-rich motif of human and mouse CD28 (P212 in human vs. A210 in mouse)
regulates CD28-induced NF-ÎșB activation and pro-inflammatory cytokine gene expression.
Moreover, this Y209APP212 sequence in humans is crucial for the association of CD28 with
the Nck adaptor protein for actin cytoskeleton reorganisation events necessary for CD28
autonomous signalling. This study thus unveils different outcomes between human and
mouse CD28 signalling to underscore the importance of species difference when transferring
results from preclinical models to the bedside
- âŠ