Integrating Geospatial Analysis Kent, Steve
Business intelligence journal,
07/2010, Letnik:
15, Številka:
3
Magazine Article
Geospatial business intelligence (BI) has been discussed by BI professionals for some time. Simply stated, geospatial BI relates analytical data to geography, usually through the use of visualization ...techniques, to relate metrics to their locations on a map. Connecting key business metrics to physical locations yields business insights into how to optimize resources and address the effects of geography. As director of BI, the author is constantly trying to keep abreast of the latest features and functions offered by BI vendors. This article describes his experiences in selecting and using software that incorporates geospatial data in the pharmaceutical industry, and provides recommendations and considerations for selecting BI software to handle geospatial data. In his research, he only found two tools with an integrated geospatial capability. The capability provided by one vendor was a very simple, out-of-the-box approach: you tagged one of the data elements as a geocoded attribute and you were ready to go.
We present the ensemble properties of 31 comets (27 resolved and 4 unresolved) observed by the Sloan Digital Sky Survey (SDSS). This sample of comets represents about 1 comet per 10 million SDSS ...photometric objects. Five-band (u,g,r,i,z) photometry is used to determine the comets' colors, sizes, surface brightness profiles, and rates of dust production in terms of the Af{\rho} formalism. We find that the cumulative luminosity function for the Jupiter Family Comets in our sample is well fit by a power law of the form N(< H) \propto 10(0.49\pm0.05)H for H < 18, with evidence of a much shallower fit N(< H) \propto 10(0.19\pm0.03)H for the faint (14.5 < H < 18) comets. The resolved comets show an extremely narrow distribution of colors (0.57 \pm 0.05 in g - r for example), which are statistically indistinguishable from that of the Jupiter Trojans. Further, there is no evidence of correlation between color and physical, dynamical, or observational parameters for the observed comets.
We use SDSS photometry of 73 million stars to simultaneously obtain best-fit main-sequence stellar energy distribution (SED) and amount of dust extinction along the line of sight towards each star. ...Using a subsample of 23 million stars with 2MASS photometry, whose addition enables more robust results, we show that SDSS photometry alone is sufficient to break degeneracies between intrinsic stellar color and dust amount when the shape of extinction curve is fixed. When using both SDSS and 2MASS photometry, the ratio of the total to selective absorption, \(R_V\), can be determined with an uncertainty of about 0.1 for most stars in high-extinction regions. These fits enable detailed studies of the dust properties and its spatial distribution, and of the stellar spatial distribution at low Galactic latitudes. Our results are in good agreement with the extinction normalization given by the Schlegel et al. (1998, SFD) dust maps at high northern Galactic latitudes, but indicate that the SFD extinction map appears to be consistently overestimated by about 20% in the southern sky, in agreement with Schlafly et al. (2010). The constraints on the shape of the dust extinction curve across the SDSS and 2MASS bandpasses support the models by Fitzpatrick (1999) and Cardelli et al. (1989). For the latter, we find an \(R_V=3.0\pm0.1\)(random) \(\pm0.1\)(systematic) over most of the high-latitude sky. At low Galactic latitudes (|b|<5), we demonstrate that the SFD map cannot be reliably used to correct for extinction as most stars are embedded in dust, rather than behind it. We introduce a method for efficient selection of candidate red giant stars in the disk, dubbed "dusty parallax relation", which utilizes a correlation between distance and the extinction along the line of sight. We make these best-fit parameters, as well as all the input SDSS and 2MASS data, publicly available in a user-friendly format.
In many scientific disciplines - especially long running, data- intensive collaborations - it is important to track all aspects of data capture, production, transformation, and analysis. In ...principle, one can then audit, validate, reproduce, and/or re-run with corrections various data transformations. We have recently proposed and prototyped the Chimera virtual data system, a new database-driven approach to this problem. We present here a major application study in which we apply Chimera to a challenging data analysis problem: the identification of galaxy clusters within the Sloan Digital Sky Survey. We describe the problem, its computational procedures, and the use of Chimera to plan and orchestrate the workflow of thousands of tasks on a data grid comprising hundreds of computers. This experience suggests that a general set of tools can indeed enhance the accuracy and productivity of scientific data reduction and that further development and application of this paradigm will offer great value.
Staying The Course Kent Gibbons, Steve Donohue
Multichannel news,
04/2004, Letnik:
25, Številka:
16
Journal Article
John Pascarelli: The digital-sub loss has a lot to do with how we focused our digital packaging. Our digital packaging was primarily driven from premium television, premium services.
This paper discusses the suitability of work teams in a shipbuilding pre-erection outfitting area. Of special interest is NASSCO'S attempt at implementing work teams in their pre- election outfitting ...area, the On-Block Department. Although the On-Block work teams were disbanded, they could be implemented again provided the company is ready for them. Therefore, recommendations for a more effective design and implementation of work teams in the On-Block Department are given. A work team is a group of people who coordinate dependant tasks with one another in order to reach a collective goal. Common characteristics of work teams include: responsibility for completing a relatively whole task; members who possess a variety of skills relevant to the group task; empowerment to make such decisions as methods of work, task schedules, and assignment of members to different tasks; responsibility to control and improve their work process, and the acquisition of new training as necessary.
In many scientific disciplines -- especially long running, data-intensive collaborations -- it is important to track all aspects of data capture, production, transformation, and analysis. In ...principle, one can then audit, validate, reproduce, and/or re-run with corrections various data transformations. We have recently proposed and prototyped the Chimera virtual data system, a new database-driven approach to this problem. We present here a major application study in which we apply Chimera to a challenging data analysis problem: the identification of galaxy clusters within the Sloan Digital Sky Survey. We describe the problem, its computational procedures, and the use of Chimera to plan and orchestrate the workflow of thousands of tasks on a data grid comprising hundreds of computers. This experience suggests that a general set of tools can indeed enhance the accuracy and productivity of scientific data reduction and that further development and application of this paradigm will offer great value.
The only other bidder, local developer Bob Thorud, went to $3.75 million before conceding. After the sale, Thorud and Eugene Shumann, another local developer, exchanged contact information with Mary ...Turke. Thorud, Shumann and Turke declined to comment after the sale. Thorud, Shumann and William Kratt bought the former Ridgeview Inn property in 2003, and Thorud formerly was an owner of Cedar Creek Country Club in Onalaska, Wis. His other projects have included Cedar Meadows in Holmen, which he developed with Don Zietlow, condominiums at 4828 Mormon Coulee Road and Countryside Park in Holmen, Wis. The purchase will have no bearing on a possible suit by U.S. Bank N.A. against the city of La Crosse, said City Attorney Pat Houlihan. Last November, U.S. Bank N.A. filed a claim against La Crosse, contending the city did not ensure the apartments were constructed according to city codes and ordinances.
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