Download - Peter de Moel SEFI IGIP conference
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Challenge the future
DelftUniversity ofTechnology
Expanding the usabilityof recorded lecturesin Watermanagement
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2Expanding the usability of recorded lectures
Personal details authors
Peter de MoelLecturer Drinking water Engineering /Project manager Pilot Delft
OpenCourseWareDelft University of Technology
(Netherlands)Erwin de MoelMSc graduate Computer ScienceUniversity of Twente (Netherlands)
Jasper VerberkAssociate professor Drinking Water
EngineeringDelft University of Technology
(Netherlands)
Willem van ValkenburgDirector TU Delft OpenCourseWareDelft University of Technology
(Netherlands)
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3Expanding the usability of recorded lectures
Netherlands and waterWatermanagement since 1200 AD
Reclaimed land and others...
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4Expanding the usability of recorded lectures
TU Delft OpenCourseWareSince 2006
http://ocw.tudelft.nl/
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5Expanding the usability of recorded lectures
TU Delft OpenCourseWareSince 2006
http://vimeo.com/5458064
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6Expanding the usability of recorded lectures
TU Delft OpenCourseWare
BSc
• Watermanagement (Dutch)• Sanitary Engineering
(English)
8 courses in Watermanagement (2 BSc / 6 MSc)
http://ocw.tudelft.nl/watermanagement/
MSc (English)
• Water Management in Urban Areas
• Public Hygiene and Epidemiology
• Drinking water Technology• Drinking water Design• Pumping Stations and
Transport Pipelines• Civil Engineering in
Developing Countries
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7Expanding the usability of recorded lectures
Recorded lectures
Collegerama (Mediasite) in Blackboard:
Since 2007
http://blackboard.tudelft.nl/
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8Expanding the usability of recorded lectures
Expanding the use of recorded lectures
Backgrounds:• TU Delft OpenCourseWare • Recorded lectures at Delft and Twente (identical recording
systems)• Speech recognition for video searching in Twente
MSc project in Computer Science
http://www.citg.tudelft.nl/live/pagina.jsp?id=69192d7e-3eaf-4788-b936-21808aa8de29&lang=en
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9Expanding the usability of recorded lectures
Recorded lectures
Course size 1 lecture 30-40 lecturesRecording duration 15 minutes 100-120 minutesVideo resolution 340x240 (iPOD)
1920x1280 (HD)File location Streaming DownloadMovie content All-in-one video
Video + screenshots
Large variation
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10Expanding the usability of recorded lectures
Watermanagement 2009/2010
• Monday/Friday 1+2
• Lecture hall A• max. 350
students
• recording with “live video connection”
• full house
550 students for BSc course
http://blackboard.tudelft.nl
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11Expanding the usability of recorded lectures
Watermanagement 2009/2010
• Lecture hall D• “Theatre room”
• 1st hour - 8 stud.• 2nd hour - 23
stud.
• not further used
550 students for BSc course
http://blackboard.tudelft.nl
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12Expanding the usability of recorded lectures
Watermanagement 2009/2010
• Live streaming ?
• Same as on my laptop
• Lectures at home
550 students for BSc course
http://blackboard.tudelft.nl
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13Expanding the usability of recorded lectures
Watermanagement 2009/2010
• In the coffee break...
• Next lecture will be the online recorded lecture....
• Or later !!
550 students for BSc course
http://blackboard.tudelft.nl
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14Expanding the usability of recorded lectures
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15Expanding the usability of recorded lectures
Watermanagement 2009/2010“Lecture attendance”
Recorded lectures are favourite
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16Expanding the usability of recorded lectures
Watermanagement 2009/2010
• Lorem ipsum dolor sit amet, consectetuer adipiscing• Cras vestibulum ipsum in lorem.• Aliquam libero magna
• Eget fermentum quis rutrum eu erat. • Suspendisse tempus dui ut eros. • Aenean pulvinar eleifend ipsum.
At what time do students “attend” recorded lectures ?
Recorded lecture are viewed live, or on demand the same day,or a week later, but mostly on the day(s) direct before the exam
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17Expanding the usability of recorded lectures
Potential developmentsReuse of recorded lectures
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18Expanding the usability of recorded lectures
Reuse of recorded lecturesLectures download
• iTunes / YouTube
• 320 x 240• MP4
• 7 MB • 1:48 min
Watermanagement• 28 lectures• 85 downloads
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19Expanding the usability of recorded lectures
Content of a course / lectures
• What is in this course ? Lectures / Subject per lecture• What is in this lecture ? Subjects• How do I navigate ? Time slider or Table Of Content• Where starts the subject…..?• Where is something on ……..?
Main questions for students
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20Expanding the usability of recorded lectures
Content of a course / lectures
• Overview of lectures• Text / pictures / pictures+text
Table of Content
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21Expanding the usability of recorded lectures
Content of a lecture
• Chapters and Paragraphs• Link to start time• Combined in ELS
Table of Content
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22Expanding the usability of recorded lectures
Content of a lectureInteractive Table of Content
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23Expanding the usability of recorded lectures
SubtitlesAnd translated subtitles (online in YouTube)
http://www.youtube.com/watch?v=9na2hHJmmvE
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24Expanding the usability of recorded lectures
Subtitels
Mean word correctness 50% (range 25 – 75%)
Creation with speech recognition
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25Expanding the usability of recorded lectures
Meta data of lecturesCourse with 28 lectures (45 minutes)
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26Expanding the usability of recorded lectures
Collegerama lecture search
• Lecture titles • Slide titles
Table of content
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27Expanding the usability of recorded lectures
Collegerama lecture search
• Human made subtitles better than speech recognition• Slide content is not a good source for search engines• Multiple keyword result per slide: much shorter viewing
time
Search engine
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28Expanding the usability of recorded lectures
Presentation in ELSTOC – downloads – search engine
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29Expanding the usability of recorded lectures
International curriculum exchange
• Distant learning as preparation for MSc Delft• Short courses• Intensive courses• Local modifications
Recorded lectures – books - assignments - exams
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30Expanding the usability of recorded lectures
International curriculum exchangeRecorded lectures – books - assignments - exams
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Challenge the future
DelftUniversity ofTechnology
http://ocw.tudelft.nlhttp://drinkwater.tudelft.nlcontact: [email protected]