Ultra-high-resolution wall displays feature a very high pixel density over a large physical surface, which makes them well-suited to the collaborative, exploratory visualization of large datasets. We introduce FITS-OW, an application designed for such wall displays, that enables astronomers to navigate in large collections of FITS images, query astronomical databases, and display detailed, complementary data and documents about multiple sources simultaneously. We describe how astronomers interact with their data using both the wall's touchsensitive surface and handheld devices. We also report on the technical challenges we addressed in terms of distributed graphics rendering and data sharing over the computer clusters that drive wall displays.

resulting transient emfs tend to drive the current to the Abstract center of the armature. The U.S. Army Armament Research, Development, and II. MODEL Engineering Center's Benet Laboratories is currently developing a diagnostic launcher for use as an erosion A model of the launcher is being developed as an simulator to investigate issues associated with the bore life of rail guns. The launcher being developed at Benet gm g g predicting performance. It is also being used to estimate provides as b forvliti o f new erosion ioncet the location and energies associated with the dominant candidatere atfalIt for peliminar to of erosion mechanisms that result from the redistribution of cetadidsabute coematerinal thasboreenroptionmizedtohpvid currents in the rails and armature. The model is based on d retais labou th stedominan boeeoin ehnss transient circuit solutions of sequentially pulsed capacitive energy sources coupled with the Lorentz forces associated with the currents in a sliding contact on parallel 1. EROSIONconductive rails. The solution of the differential equations involving the state variables associated with the linear storage elements is solved using one step methods while There are significantly more reports in the literature the behavior of nonlinear circuit elements is modeled regarding damage to solid armatures than erosion on rail using an iterative linear companion solution. Figure 1 surfaces. This is presumably because of the severity of the shows the equivalent circuit of the launcher model for a damage typically observed in armatures. Aluminum series of switched parallel capacitor banks. Several armatures are usually employed, offering the advantage of capacitor banks are discharged in a sequence that melt lubrication which tends to produce a "zero friction" optimizes the current/force profile in an effort to condition. The low melting temperature of aluminum maximize the erosion effects we are trying to reproduce. leads to more thermal damage in the armature than in the The capacitance, resistance, and inductance are assumed rails which are usually made of Glidcop. Persad, et al [1] to be identical for each bank and are given by RI, R2, and studied armature-rail erosion phenomena using solid L1. L2 and R3 are common to all banks. The armature is aluminum armatures; armature-rail contact was accelerated by the current in the loop created by the linear maintained all along the rail in their experiments. They companion model of a diode (Geq, Ieq, and rs) and the observed that, upon firing, most of the rail surface became circuit inductance. In the equivalent circuit, R1 = Res, + coated with a protective layer of quenched aluminum Rbusbarl +Rfuse, R2 = RL, R3 = Rcable + Rbusbar2 + Rbreech + film, so no actual damage to the Glidcop rail surface was Rarmature + 2Rcontact + Rrails, LI = Lbank, and L2 = Lcable + detected. It is commonly observed in rails from firing Lbreech + Lrails The capacitor esr (Resr) and fusing (Rfuse), tests that erosion grooves initially form near the outer busbar resistance (Rb...

The ALMA radio-telescope's operations depend on the availability of high-level, easy-to-understand status information about all of its components. The ALMA Dashboard aims at providing an all-in-one-place near-real-time overview of the observatory's key elements and figures to both line and senior management. The Dashboard covers a wide range of elements beyond antennas, such as pads, correlator and central local oscillator. Data can be displayed in multiple ways, including: a table view, a compact view fitting on a single screen, a timeline showing detailed information over time, a logbook, a geographical map.

HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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