Biomedical Engineering Reference
In-Depth Information
The Application Layer of E-Learning Cloud
The application softwares or services provided by a school or university, the
students to pay in the similar way of on-demand access, according to the amount to
calculate the cost, complete the production, marketing, trading, and management.
E-Learning cloud environment provides user-oriented ubiquitous adaptive hard-
ware resources, computing environment, and software services. In e-learning cloud
space, users can access to digital services transparently at any time in anywhere.
The users can obtain the necessary network and computing services very naturally
at any position. The information space and physical space will be integrated
because of ubiquitous computing capability. And the ubiquitous information
terminals together with the embedded system equipment will be the vehicles of
e-commerce in the future.
E-Learning Application Model Based on Cloud Computing
With the progress and application of technology, the emergence of cloud
computing offers e-learning good opportunity to develop, so we are convinced that
it also can resolve the problem mentioned above properly. School or the enterprise
neither needs to worry about the construction of the environment of e-learning
software and hardware nor invest enormous capital and human and material
resources to construct the system. All those issues can be handed to service
providers of e-learning cloud, who can customize for users. In e-learning cloud
model, data storage is highly distributed, data management is highly centralized,
and data service is highly virtualized, all of which offer a much safer data service.
Intelligent business policy-making. E-leaning cloud environment provides large
data center with mass data storage and high-speed computation. This architecture
for the cloud platform provides a variety of user interface forms, such as Web
Service interfaces, Java interfaces, C interfaces, Shell interface, etc. Cloud
computing platform provides resource services to teachers and students in the form
of rental. A module is designed which is based on the consumption billing to
ensure that users only pay for the resources they have used.
A promise of the cloud computing is the virtualization which reduces the number
of servers required. Therefore, the key is to identify the user to meet the expected
demand for the infrastructure needed to balance the amount of cloud: too few
computing resources, the request from the user must wait for the release of
resources or reject those requests until more hardware is added to the environment.
Too much computing resources, hardware costs, and other expenses will be denied
cost-cutting promises of cloud computing. In the cloud platform, teachers and
administrators enter their requests for IT resources website (server, software,
storage, etc.), immediately know whether these resources are available. If resources
are available, submit a request immediately and automatically routed to the cloud
administrator for approval. This process is automated, so it can be met in a very
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