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Rather than attempt an exhaustive analysis, it seems best to look at a number of categories of repository application: digital libraries, repositories of data sets, repositories of workflows and within workflows and repositories as Virtual Research Environments. Examination of each application will include concrete examples.

Repositories as digital libraries

While realising that the term is fuzzy, by digital library we understand here a system for managing, curating and delivering digital content that is primarily focused on (web) delivery to a human user, who is able to search, browse and access the material therein. While this also covers basic publication repositories, digital content may also be rich, varied and complex in structure, and digital libraries typically provide specialised access mechanisms and functionality for particular content types.

While some may dispute that the term should be so restricted – see for example the classic article ‘ What Is a Digital Library Anymore, Anyway? ’ – systems that provide functionality for manipulating, annotating etc. material may be better thought of as virtual research environments.

Examples of such repositories are many. Early examples are the University of Virginia Library or The Encyclopedia of Chicago , which use repositories to manage extensive collections of diverse material, including books, documents, images, maps and pre-existing websites. Many of these objects are themselves compound, and possess contextual relationships with other objects, all of which need to be represented in the data model. Different types of object are provided with particular access mechanisms that are required to be consistent across these object types.

More recently, there has been an emphasis on lightweight mechanisms for producing this sort of digital library. An interesting example is Active Fedora , which exploits RESTful web services (for an explanation, please see http://en.wikipedia.org/wiki/Representational_State_Transfer?) and rapid web development technologies to provide a low cost and low effort means for producing such applications, for example the Jewish Women’s Archive .

While a user may see only a website, there are important differences between using a repository and just using, say, a Content Management System (CMS); the structure of the information is entirely managed within the repository, and the services that support the behaviours and functionality of the information are associated with the repository objects. Both are decoupled from the online delivery mechanism, thus “future proofing” the content. Moreover, the repository provides a generic way of representing content, in contrast to specialised (often commercial) systems for delivering particular types of content, such as book digitisations, which provide high levels of specific functionality but less flexibility.

Repositories of datasets

Take up of repositories for managing more complex material occurred first in the arts, humanities and cultural heritage fields. In the sciences, the focus for data management was more on the need to manage, transfer and access large data sets distributed over multiple, collaborating research centres. The eCrystals archive, developed by the JISC-funded eBank project, was a pioneer in the use of digital repository technology – in this case EPrints – to archive, curate and disseminate research data, specifically chemistry datasets in the particular field of small-molecule crystallography. The repository here is integrated within the researcher’s work activities – datasets are deposited once the experiment is complete – and it exploits the publication mechanisms established for more traditional institutional repositories.

Questions & Answers

do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
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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