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To join a Virtual Organisation you need to be able to prove who you are electronically. This is similar to the way that a passport is used to prove your identity when you cross international borders. Within the Grid community this is frequently done through the use of a certificate – generally issued by proving your identity to someone at your local institute. Some organisations allow you to generate a certificate through your existing ability to access your organisation’s own network.

Once you are able to identify yourself you can apply to join a Virtual Organisation. Different Virtual Organisations exist to cover the needs of different communities. A community may have more than one Virtual Organisation within it with each one having different entry criteria and possibly providing access to different resources.

Information

With many thousands of services potentially available to a user, discovering which one to use presents many challenges. The infrastructure is continually changing – services are appearing, disappearing or being upgraded as the sites evolve. Being able to discover, in near real-time, the types of services that are available, the Virtual Organisations that are able to access them, and the characteristics of each service (i.e. the data that it stores or the speed of the processors), and the load on the service, are all information points that can drive which service to select.

The information collected by gLite on the resources within the infrastructure can be presented in many ways. The information can be browsed directly through a web portal, searched manually through command line tools, or programmatically from within an application.

Data

Many of the researchers that use EGEE’s infrastructure do so in order to analyse data stored in files. Frequently these files are stored at locations different from the currently available computational resources. EGEE provides services that allow users to retrieve a file from off-line tape storage onto disk, and to then move that file to the site where the computational resources for that user is going to be available. (This method of data storage and retrieval is normal in high energy physics experiments and frequently used in other communities dealing with large archived data sets such as climate modelling and satellite observation records.)

How does a user locate the file that they need to use on an infrastructure where the location of files is continually changing? File catalogues run by some communities provide a register where a ‘logical’ file name can be mapped to a number of physical replicas. Having files stored in multiple places has many benefits - files are still available even if one of the sites storing the files is temporarily disconnected from the network or the service is down. Software can be written to exploit the distributed location of the files so as to run an application on the computing resources located near to their storage location – thereby reducing the time taken to move the files from their storage location to the compute resources.

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Research in a connected world. OpenStax CNX. Nov 22, 2009 Download for free at http://cnx.org/content/col10677/1.12
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