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Technically speaking, HyperCities is a generalizable, easily scalable data model for linking together and publishing geo-temporal content using a unified front-end delivery system and a distributed back-end architecture. HyperCities consists of a geo-temporal markup server and a front-end visualization platform built on the Google Maps/Earth APIs that enable users to explore, manipulate, and contribute to any geographically aware environment. At its core are databases of openly accessible, geo-temporal content defined by KML, a mark-up language chosen because its development is funded by private enterprise (Google) but governed by the Open Geospatial Consortium, which ensures a robust user-base and an open-source development model for specification and implementation. (External Link)   HyperCities generates real-time, KML-based network links connected to geo-temporal content, offering a non-exclusive front-end for contributing to, organizing, and exploring independent repositories. While HyperCities hosts and stores some data locally, it is important to underscore that a central aim of the project is to host metadata connections to content stored and maintained in external repositories and on external servers. These servers range from commercially available platforms (such as Google's 3D warehouse, YouTube and Flickr) to library and archival platforms for maps, oral histories, videos, photograph collections, and other media files.  In this way, HyperCities provides the connective tissue for the community of geo-spatial time travelers by leveraging the extensive development of data repositories and social networks. HyperCities is not a "walled garden"; rather, it is an aggregation and integration platform built to facilitate interoperable, shareable, and embeddable archival objects that are connected though network links and real-time KML feeds.

The HyperCities system architecture follows one of the central trends often identified as Web 2.0: The front-end is almost entirely separated from its back-end, without following the standard model-view-controller architecture frequently used by web applications. Although a web-based platform, HyperCities behaves more like a desktop application because the front-end follows an event-driven programming model rather than a standard webpage submission model. The front-end is written entirely in Javascript/AJAX and makes extensive use of complex event processing and dynamically-generated User Interface components (rather than prewritten HTML). At its core, the HyperCities platform is a collaboration of web services, compiling a combination of digital content from disparate sources through the use of XML/KML and Javascript.  The Google Maps/Earth APIs define a set of JavaScript objects and methods that HyperCities utilizes to put maps on its interface, allowing instant integration of satellite imagery with other layers such as markers, pathways, images, historical maps, 3D objects, and other kinds of data. 

When a user first visits Hypercities, what is shown is a general Google Map zoomed out to show the world with the "historical cities" featured in HyperCities. Each time the user moves the map (zooms in, pans, jumps to a new city) or adjusts the time-bar, the application interacts with one or more external servers without reloading the entire page; instead, only the relevant data (based on spatial and temporal bounding coordinates as well as pre-defined user privileges/permissions) is displayed while the front-end maintains its own state. The server back-end (written in PHP and running off a MySQL database) is limited to pulling new data to display and input any changes a user might make to the objects being displayed. The front-end is almost a complete application itself because it contains all the display logic. This means that it is not only fairly easy to use HyperCities with different data sources, but it is also possible to pull the data from the back-end into any geographically aware environment.

Questions & Answers

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.
yes that's correct
I think
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
analytical skills graphene is prepared to kill any type viruses .
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
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Source:  OpenStax, Online humanities scholarship: the shape of things to come. OpenStax CNX. May 08, 2010 Download for free at http://cnx.org/content/col11199/1.1
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