6,369 research outputs found
AKARI-CAS --- Online Service for AKARI All-Sky Catalogues
The AKARI All-Sky Catalogues are an important infrared astronomical database
for next-generation astronomy that take over the IRAS catalog. We have
developed an online service, AKARI Catalogue Archive Server (AKARI-CAS), for
astronomers. The service includes useful and attractive search tools and visual
tools.
One of the new features of AKARI-CAS is cached SIMBAD/NED entries, which can
match AKARI catalogs with other catalogs stored in SIMBAD or NED. To allow
advanced queries to the databases, direct input of SQL is also supported. In
those queries, fast dynamic cross-identification between registered catalogs is
a remarkable feature. In addition, multiwavelength quick-look images are
displayed in the visualization tools, which will increase the value of the
service.
In the construction of our service, we considered a wide variety of
astronomers' requirements. As a result of our discussion, we concluded that
supporting users' SQL submissions is the best solution for the requirements.
Therefore, we implemented an RDBMS layer so that it covered important
facilities including the whole processing of tables. We found that PostgreSQL
is the best open-source RDBMS products for such purpose, and we wrote codes for
both simple and advanced searches into the SQL stored functions. To implement
such stored functions for fast radial search and cross-identification with
minimum cost, we applied a simple technique that is not based on dividing
celestial sphere such as HTM or HEALPix. In contrast, the Web application layer
became compact, and was written in simple procedural PHP codes. In total, our
system realizes cost-effective maintenance and enhancements.Comment: Yamauchi, C. et al. 2011, PASP..123..852
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Interactive product catalogue with user preference tracking
In the context of m-commerce, small screen size poses serious difficulty for users to browse effectively through a product catalogue, given the limited number of products that may be presented on-screen. Despite the availability of search engines, filters and recommender systems to aid users, these techniques focus on a narrow segment of product offering. The users are thus denied the opportunity to do a more expansive exploration of the products available. This paper describes a novel approach to overcome the constraints of small screen size. Through integration of a product catalogue with a recommender system, an adaptive system has been created that guides users through the process of product browsing. An original technique has been developed to cluster similar positive examples together to identify areas of interest of a user. The performance of this technique has been evaluated and the results proved to be promising
Recent Developments in Cultural Heritage Image Databases: Directions for User-Centered Design
published or submitted for publicatio
A zoomable shopping browser using a graphic-treemap
Effective and efficient navigation and representation of the entire structure of the product catalogue is one of the important factors for on-line market. This paper proposes an application using Treemaps visualization to enhance the functionality of online product category. We aim to develop high-quality catalog interfaces in terms of readability, understandability and comprehension by integrating graphics into Treemaps. We applied two types of Treemaps: 1) Slice-and-Dice Treemap, 2) Squarified Treemap, into the on-line catalogue to address the small windowproblem allowing buyers to overview and navigate large product categories dynamically. We also use a history bar that locates on the top of each category and sub-category to provide a 2.5-dimensional view of contextual information. © 2009 IEEE
The Auroral Planetary Imaging and Spectroscopy (APIS) service
The Auroral Planetary Imaging and Spectroscopy (APIS) service, accessible
online, provides an open and interactive access to processed auroral
observations of the outer planets and their satellites. Such observations are
of interest for a wide community at the interface between planetology and
magnetospheric and heliospheric physics. APIS consists of (i) a high level
database, built from planetary auroral observations acquired by the Hubble
Space Telescope (HST) since 1997 with its mostly used Far-UltraViolet
spectro-imagers, (ii) a dedicated search interface aimed at browsing
efficiently this database through relevant conditional search criteria and
(iii) the ability to interactively work with the data online through plotting
tools developed by the Virtual Observatory (VO) community, such as Aladin and
Specview. This service is VO compliant and can therefore also been queried by
external search tools of the VO community. The diversity of available data and
the capability to sort them out by relevant physical criteria shall in
particular facilitate statistical studies, on long-term scales and/or
multi-instrumental multi-spectral combined analysis
Adding Bricks to Clicks: The Contingencies Driving Cannibalization and Complementarity in Multichannel Retailing
This paper empirically explores the contingencies that drive cannibalizing and complementary effects across channels to provide sales forecasting, promotion planning, and customer relationship management guidance to multichannel managers. We investigate three contingencies in a sales analysis of a leading U.S. retailer who adds a new retail store channel to existing catalog and online channels. We show that the emergence and strength of cannibalizing and complementary effects varies over time, across type of channel, and by type of customer, and provide insight into when and where managers can expect these effects to dominate and how to counter cannibalization and promote complementarity across channels. We find that opening retail stores cannibalizes sales in the catalog and online channels in the short term, but produces complementary effects in both channels in the long term; cannibalization is magnified in the catalog channel, while complementarity is magnified in the online channel. Customer analysis suggests that opening retail stores paves the way for higher rates of customer acquisition and higher rates of repeat purchasing among existing customers in the direct channels in the long term.Multichannel Retailing, Channels of Distribution, Direct Marketing, E-commerce, Channel Management
Branded apps in Spain as a means of communicating trends in fashion
Apps are of great interest and curiosity for the users of mobile phones, being already highly unloaded and used for the users of smartphones.
The fashion mobile applications represent only a fraction of the mobile global applications (almost 0,2 %), nevertheless they are starting to deserve special attention from designers and researchers in this area. Brands want to know about the new trends in the market to be able to continue surprising and impressing their public.
In this study, we seek to identify the most relevant aspects of the applications that help to improve the image of the Spanish prĂŞt-Ă -porter fashion brands such as Zara, Pull and Bear, Stradivarius, Shana, Bimba y Lola,...
The study considers the position in the ranking of downloads, the category, the opinions, valuations of the users and the criteria described by Jami Lawrence (2010): amusement, saving of time and / or comfort in the use.
Findings:
In this analysis, we seek to identify the most relevant aspects of the applications that help to improve the image of the brand, in this particular case of the Spanish prĂŞt-Ă -porter fashion brands.
- It is indispensable that the applications entertain the user, save time and / or comfort, we have observed that they are these characteristics those that are valued by the users.
- Another factor that is valued in the applications, is that the application should make sense for the user and to have an added value that doesn't necessarily have to be related with the nature of the brand.
- But it is important that applications to be developed have to be coherent with the identity of the brand. As in any other area, the appearance of new mass media, like the mobile, is the introduction of new challenges. –
Finally, it is important for the brand to adapt constantly to the new technologies, but we must not forget that a precarious incorporation and badly developed app it can be more harmful than beneficial
The NASA Exoplanet Archive: Data and Tools for Exoplanet Research
We describe the contents and functionality of the NASA Exoplanet Archive, a
database and tool set funded by NASA to support astronomers in the exoplanet
community. The current content of the database includes interactive tables
containing properties of all published exoplanets, Kepler planet candidates,
threshold-crossing events, data validation reports and target stellar
parameters, light curves from the Kepler and CoRoT missions and from several
ground-based surveys, and spectra and radial velocity measurements from the
literature. Tools provided to work with these data include a transit ephemeris
predictor, both for single planets and for observing locations, light curve
viewing and normalization utilities, and a periodogram and phased light curve
service. The archive can be accessed at
http://exoplanetarchive.ipac.caltech.edu.Comment: Accepted for publication in the Publications of the Astronomical
Society of the Pacific, 4 figure
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