50,621 research outputs found
LCG MCDB -- a Knowledgebase of Monte Carlo Simulated Events
In this paper we report on LCG Monte Carlo Data Base (MCDB) and software
which has been developed to operate MCDB. The main purpose of the LCG MCDB
project is to provide a storage and documentation system for sophisticated
event samples simulated for the LHC collaborations by experts. In many cases,
the modern Monte Carlo simulation of physical processes requires expert
knowledge in Monte Carlo generators or significant amount of CPU time to
produce the events. MCDB is a knowledgebase mainly dedicated to accumulate
simulated events of this type. The main motivation behind LCG MCDB is to make
the sophisticated MC event samples available for various physical groups. All
the data from MCDB is accessible in several convenient ways. LCG MCDB is being
developed within the CERN LCG Application Area Simulation project
ImageJ2: ImageJ for the next generation of scientific image data
ImageJ is an image analysis program extensively used in the biological
sciences and beyond. Due to its ease of use, recordable macro language, and
extensible plug-in architecture, ImageJ enjoys contributions from
non-programmers, amateur programmers, and professional developers alike.
Enabling such a diversity of contributors has resulted in a large community
that spans the biological and physical sciences. However, a rapidly growing
user base, diverging plugin suites, and technical limitations have revealed a
clear need for a concerted software engineering effort to support emerging
imaging paradigms, to ensure the software's ability to handle the requirements
of modern science. Due to these new and emerging challenges in scientific
imaging, ImageJ is at a critical development crossroads.
We present ImageJ2, a total redesign of ImageJ offering a host of new
functionality. It separates concerns, fully decoupling the data model from the
user interface. It emphasizes integration with external applications to
maximize interoperability. Its robust new plugin framework allows everything
from image formats, to scripting languages, to visualization to be extended by
the community. The redesigned data model supports arbitrarily large,
N-dimensional datasets, which are increasingly common in modern image
acquisition. Despite the scope of these changes, backwards compatibility is
maintained such that this new functionality can be seamlessly integrated with
the classic ImageJ interface, allowing users and developers to migrate to these
new methods at their own pace. ImageJ2 provides a framework engineered for
flexibility, intended to support these requirements as well as accommodate
future needs
UML-F: A Modeling Language for Object-Oriented Frameworks
The paper presents the essential features of a new member of the UML language
family that supports working with object-oriented frameworks. This UML
extension, called UML-F, allows the explicit representation of framework
variation points. The paper discusses some of the relevant aspects of UML-F,
which is based on standard UML extension mechanisms. A case study shows how it
can be used to assist framework development. A discussion of additional tools
for automating framework implementation and instantiation rounds out the paper.Comment: 22 pages, 10 figure
Flare: Architecture for rapid and easy development of Internet-based Applications
We propose an architecture, Flare, that is a structured and easy way to
develop applications rapidly, in a multitude of languages, which make use of
online storage of data and management of users. The architecture eliminates the
need for server-side programming in most cases, creation and management of
online database storage servers, re-creation of user management schemes and
writing a lot of unnecessary code for accessing different web-based services
using their APIs. A Web API provides a common API for various web-based
services like Blogger [2], Wordpress, MSN Live, Facebook [3] etc. Access
Libraries provided for major programming languages and platforms make it easy
to develop applications using the Flare Web Service. We demonstrate a simple
micro-blogging service developed using these APIs in two modes: a graphical
browser-based mode, and a command-line mode in C++, which provide two different
interfaces to the same account and data.Comment: 4 pages, 5 figure
Thesauri on the Web: current developments and trends
This article provides an overview of recent developments relating to the application of thesauri in information organisation and retrieval on the World Wide Web. It describes some recent thesaurus projects undertaken to facilitate resource description and discovery and access to wide-ranging information resources on the Internet. Types of thesauri available on the Web, thesauri integrated in databases and information retrieval systems, and multiple-thesaurus systems for cross-database searching are also discussed. Collective efforts and events in addressing the standardisation and novel applications of thesauri are briefly reviewed
1st INCF Workshop on Sustainability of Neuroscience Databases
The goal of the workshop was to discuss issues related to the sustainability of neuroscience databases, identify problems and propose solutions, and formulate recommendations to the INCF. The report summarizes the discussions of invited participants from the neuroinformatics community as well as from other disciplines where sustainability issues have already been approached. The recommendations for the INCF involve rating, ranking, and supporting database sustainability
User Applications Driven by the Community Contribution Framework MPContribs in the Materials Project
This work discusses how the MPContribs framework in the Materials Project
(MP) allows user-contributed data to be shown and analyzed alongside the core
MP database. The Materials Project is a searchable database of electronic
structure properties of over 65,000 bulk solid materials that is accessible
through a web-based science-gateway. We describe the motivation for enabling
user contributions to the materials data and present the framework's features
and challenges in the context of two real applications. These use-cases
illustrate how scientific collaborations can build applications with their own
"user-contributed" data using MPContribs. The Nanoporous Materials Explorer
application provides a unique search interface to a novel dataset of hundreds
of thousands of materials, each with tables of user-contributed values related
to material adsorption and density at varying temperature and pressure. The
Unified Theoretical and Experimental x-ray Spectroscopy application discusses a
full workflow for the association, dissemination and combined analyses of
experimental data from the Advanced Light Source with MP's theoretical core
data, using MPContribs tools for data formatting, management and exploration.
The capabilities being developed for these collaborations are serving as the
model for how new materials data can be incorporated into the Materials Project
website with minimal staff overhead while giving powerful tools for data search
and display to the user community.Comment: 12 pages, 5 figures, Proceedings of 10th Gateway Computing
Environments Workshop (2015), to be published in "Concurrency in Computation:
Practice and Experience
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