Network
Applications, Web 2.0, Distance Learning, and Telecommuting
Connected computers
Work together
Are interdependent
Exchange data with
each other
Network Applications
Discovery, Communications , Collaboration and Web services
Discovery
Discovery allows users
to browse and search data sources, in all topic areas,
on the Web.
Search engines are computer
programs that search for specific information
by key words and
report the results.
Metasearch engines search
several engines at once and integrate the findings of
the various search
engines to answer queries posted by users.
Examples for Largest
Search Engines
Google, Yahoo , Ask and Microsoft Network
Portal is a
Web-based, personalized gateway to information and knowledge that provides
relevant information from different IT systems and the Internet using advanced
search and indexing techniques.
Commercial (public) portals offer
content for diverse communities and are the most popular portals on the
Internet.
Affinity portals support
communities such as a hobby group or a political party.
Mobile portals are
accessible from mobile devices.
Corporate portals offer a personalized
single point of access through a Web browser.
Industry wide portals are for
entire industries.
Communication:
Electronic mail (e-mail) is the
largest-volume application running on the Internet.
Web-based call centers (customer call center) are services
that provide effective personalize customer contact as an imporant part of
Web-based customer support.
Electronic chat room is a virtual
meeting place where groups of regulars come to (gab)
Collaboration
Collaboration refers to
efforts of two or more entities (individuals, teams, groups,
or organizations) who work together to accomplish certain
tasks.
Work group refers
specifically to two or more individuals who act together to perform some task.
Virtual group (team) is when
group members are in different locations.
Virtual collaboration is the use
of digital technologies that enable organizations or individuals to
collaboratively plan, design, develop, manage and research products, services
and innovative applications.
Work flow technologies facilitate the movement of
information as it flows through the sequence of steps that make up an
organization’s work procedures. Includes workflow management and workflow
systems.
Groupware refers to
software products that support groups of people who share a common task or goal
and who collaborate to accomplish it.
Teleconferencing is the use
of electronic communication that allows two or more people at different
locations to hold a simultaneous conference.
Videoconference is when
participants in one location can see participants at other locations and share
data, voice, pictures, graphics and animation by electronic means.
Web conferencing is
videoconferencing conducted over the Internet.
Real-time collaboration tools support synchronous
communication of graphical and text-based information i.e. computer-based whiteboards.
Web 2.0
Web 2.0 is a loose
collection of information technologies and applications and the
Web sites that use them..
Categories of Web 2.0 Sites
Social Networking Sites: Allow users
to upload their content to the web in the form of text, voice, images, and
video.
Aggregators: Provide a
collection of content from the web (e.g., Technorati, Digg, Simple thred).
Mashups: A web site
that takes content from a number of other web sites and mixes them together to
create a new kind of content (e.g., SkiBonk, Healthmap, ChicagoCrime)
Web Services and Service-Oriented
Architecture
Web services are
applications delivered over the Internet that users can select and combine
through almost any device, from personal computers to cell phones.
A service-oriented
architecture is an IT architecture that makes it possible to construct business
applications using web services.
Four Protocols of Web Services
Extensible Markup
Language (XML) makes it easier to exchange data
among a variety of applications. All Web services documents are written in XML.
Simple Object Access
Protocol (SOAP) is a protocol that defines how
messages can be exchanged among different systems and applications through the
use of XML.
The Web Services
Description Language (WSDL) is used to create the
XML document that describes the tasks
performed by various Web services.
Universal Description,
Discovery, and Integration (UDDI) allows users to search
for needed Web services in public or private directories of such services.
Web services architecture
has three major components
Web
services provider
Web
services directory
Web services client (or consumer)
WSDL creates the XML document and describes the various
Web services in the directory.
UDDI allows Web services to be stored in the directory
and allows users to search for those
services
SOAP enables users to access needed Web services.
E-Learning refers to
learning supported by the Web.
Distance learning (DL) refers to
any learning situation in which teachers and students
do not meet
face-to-face.
Benefits of E-Learning
Self-paced learning increases content retention.
Online materials deliver high-quality, current content.
Students have the flexibility of learning from any place at
any time at their own pace.
Learning time generally is shorter, and more people can be
trained due to faster training time.
Training costs can be reduced.
Drawbacks of E-Learning
Instructors may need training to be able to teach
electronically.
The purchase of additional multimedia equipment may be
necessary.
Students must be computer literate and may miss the
face-to-face interaction with instructors.
There are issues with assessing students’ work, as
instructors really do not know who completed assignments
Telecommuting allows workers to work anytime and anyplace.
Telecommuting Benefit
For Employees
Reduced stress, improved family life
Employment opportunities for single parents and persons
with disabilities
For Employers
Increased productivity
Ability to retain skilled employees
Telecommuting Disadvantages
For Employees
Feelings of isolation
No workplace visibility
Potential for slower promotions
For Employers
Difficulties in supervising work
Potential information security problems
Additional training costs
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