A Review Of A De Technology


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A Review Of A De Technology

  1. 1. Sultan Qaboos University College of Education Department of Instructional & Learning Technologies A Review of a DE technology "Webcast" Amina Al Sarkhy 59211 1
  2. 2. o Define the technology: Webcast technology: • (v.) (1) To use the Internet to broadcast live or delayed audio and/or video transmissions, much like traditional television and radio broadcasts. For example, a university may offer on-line courses in which the instructor Webcasts a pre-recorded or live lecture, or an enterprise may Webcast a press conference in lieu of or in addition to a conference call. Users typically must have the appropriate multimedia application in order to view a Webcast. (2) To use push technology( sending data to a client without the client requesting it.), to send Web-based information to an Internet user. • (n.) The data transmission that results from one of the above methods. • Webcasts are typically live presentations in which a remote audience may participate, but real-time interactivity isn't critical to the definition of a Webcast. • the transmission of live or pre-recorded audio and/ or video to computers that are connected to the Internet. • The delivery of audio, video or both of these content formats to large groups either locally or distributed (Boettcher & Nardick, 2001). o Objectives of using the webcast technology in DE: 1. To create a forum for discussion that will allow students from all over the country to contribute and scrutinize. 2. To communicate with remote audience. 3. To allow meetings to take place with all contributors in different places by harnessing video conferencing technology 4. To allow members to work from home more effectively. 2
  3. 3. 5. To deliver large trainings to customers, partners, and students. 6. To Launch new products or corporate initiatives. 7. Present special events or conferences o Features/advantages of the webcast technology: 1. Webcasting makes meetings open to a wider audience. 2. archived webcasts can be recalled and reviewed at any point by anybody with a computer. 3. Allow schools, teams, universities, institutions, and broadcasters to produce their own webcasts. 4. Allow students to have full audio or video coverage online when they may not be able to book standard radio or TV time. 5. Webcasts are reliable and failures should be rare. 6. Webcasts are typically dependable and of acceptable quality. 7. Being accessible to anyone with an internet connection (i.e. relatives several states away), unlike the range and market limitations of terrestrial radio and TV. 8. Through accepting emails during appropriate council meetings, the public are able to engage in politics. 9. Gains the attention and interest of young people and can allow re- evaluation of the image of a local authority. 10. The implementation of webcasting will increase computer familiarization amongst those prepared to watch webcasts. o Limitations of the webcast technology: 1. Instructors have no control over the stability of the server on which the Webcast is located. As with any live demonstration involving Intemet sites network. 2. Actually, even if the Webcast works fine on a personal computer, delay the classroom presentation until it's been proven to work flawlessly in the room. 3
  4. 4. 3. Webcast can freeze up, lose audio, load slowly or produce any glitch that makes the Webcast difficult to view or hear. 4. There is always the chance that webcasting could be an expensive failure. 5. webcasting can be a costly venture initially. Not only is there the cost of purchasing all of the relevant hardware and software, there is the cost of installation and furthermore the cost of training staff in its use. These costs could be questioned by the public as excessive and unnecessary, especially if webcasting is replaced by digital television. o Discuss how this technology is used to deliver and support learning: Webcasting technology is an effective mean to support and deliver learning because it enables the teacher to deliver the courses or lectures via the internet, so students can see and listen to the lecture at any time or place independently with out the need to follow a scheduled programs like TVs. This is preferred by students how are doing their Master or doctorate program and for busy students. This would allow members to work from home more effectively. However, As meetings have the potential to reach a wide audience, participants in the meetings need to be aware of themselves and how their actions can reflect upon them and upon their institutions. The media is a very powerful and its powers can be harnessed by its correct use. Using it incorrectly however can cause great embarrassment. It is also important to consider what restraints the technology can place on actions. Moreover, Through accepting emails during appropriate council meetings, the students are able to engage in politics, thus increasing students' political participation with the potential to improve turn out at elections and increase legitimacy of local authorities. If they are taking part in council meetings they feel as though they are being listened to. Additionally, there are some elements to an ideal webcast including: • High quality production – this includes top notch equipment being used by a skilled production team, and is judged not only quality of picture, but on directorial approach. 4
  5. 5. • High quality presentation – the subject on discussion needs to be well researched and presented by skilled communicators. • Accessibility – The webcast must be easily accessible to the public / audience. • Worthiness – a subject that is worthy of being broadcast, if the subject is not interesting people will not watch, and may be deterred from watching again. • Interactivity – public involvement. o Webcast cost effectiveness: The majority of webcasting solutions support the creation, management, distribution, and delivery of rich media information and incorporate a wealth of content provider and attendee feature. • Webcasting allow you to see or here the rich media content without the need to download entire rich media files ( save time and effort). • Webcasting is much less expensive than audio or web conferencing. ASP( application service provider) service provide offerings combine little or no up-front cost and limited fixed fees. • Low cost to enjoy high impact, interactive rich media content. • There is no impact on the viewer's PCs since there is no software to load or plug in to install. • It has moderate up-front cost, low per participant cost. ( Weinstein, 2005) o Discuss concerns raised by researchers and distance students/tutors about this technology. The 1. Ben Taylor(2006) said that: 'it is also important to consider what restraints the technology can place on actions. The following is a 5
  6. 6. list of bullet points to written to guide participants on various aspects of webcasts: • Technical Advice:  Stay within range of cameras and microphones, by moving out of range the production will look amateur.  Avoid quick movement, this will show as a blur.  Ensure the background is plain, does not cause glare, and does not clash with speakers clothes.  Avoid using excessive text, and if text is to be used ensure it is of font size 30 or above.  Try to change shot regularly in order to maintain viewer interest. Do not allow speakers to become talking heads. • Personal Advice  Do not wear predominantly white. This usually causes glare on screen.  Avoid directly facing the camera, this give an appearance larger than reality. By sitting at a slight angle to the camera one appears more slender.  Lean a little forward when speaking.  Speak in a clear and confident voice.  Use hand movements and appropriate body language, but remember to keep large gesticulations to a minimum.  Do not do anything regarded as inappropriate such as swearing, belching, make slanderous remarks… etc. 1. The following suggestions by " Steven Bell" may assist the instructor in limiting or avoiding students passivity:  Assure that the learners' attention is focused on the appropriate aspects of the Webcast as they relate to the learning module; 6
  7. 7.  Assure that the learners understand the learning objectives prior to viewing the Webcast;  Integrate questions and/or activities into the session that will stimulate recall of prior knowledge;  Provide a cue or strategy that will promote retention of the materials presented (association of new data to existing knowledge);  Provide feedback as close to the completion of the aforementioned tasks as feasible. o some case studies/examples. One of webcasting technology is used by the University of California http://berkeley.edu/. It is an online service which Every semester, UC Berkeley webcasts select courses and events for on-demand viewing via the Internet. webcast.berkeley course lectures are provided as a study resource for students and are not sanctioned as a substitute for going to the course lectures. webcast.berkeley/courses is an “opt-in” program available to lecturers scheduled to teach in classrooms with installed video and/or podcast capture technology. Moreover, it provides the courses in both video and audio formats to allow for more accessibility and variousness. You can find this webcast service on: http://webcast.berkeley.edu/. o References: 1. Ira. M Weinstein ( 2005). Effective enterprise webcasting: optimizing your webcast solution for efficiency and success. Wainhouse research. October 2005 2. Steven Bell: Cyber-Guest Lecturers: Using Webcasts As a Teaching Tool. TechTrends, Volume 47, Issue 4. 3. Ben Taylor(2006): Webcasting and Local Authorities. HR & Business Support. 4. http://www.webopedia.com. 7