Link
Koji Yatani University of Tokyo, Chiba, Japan
Koiti Tamura University of Tokyo, Chiba, Japan
Keiichi Hiroki University of Tokyo, Chiba, Japan
Masanori Sugimoto University of Tokyo, Chiba, Japan
Hiromichi Hashizume National Institute of Informatics, Tokyo, Japan
Conference on Human Factors in Computing Systems archive
CHI '05 extended abstracts on Human factors in computing systems table of contents
Portland, OR, USA
SESSION: Late breaking results: short papers table of contents
Pages: 1881 - 1884
Year of Publication: 2005
ISBN:1-59593-002-7
Abstract:
In recent years, mobile devices have rapidly penetrated into our daily lives. However, several drawbacks of mobile devices have been mentioned so far. The proposed system called Toss-It provides intuitive information transfer techniques for mobile devices, by fully utilizing their mobility. A user of Toss-It can send information from the user's PDA to other electronic devices with a toss or swing action, as the user would toss a ball or deal cards to others. This paper describes the current implementation of Toss-It and its user studies.
My Discussion:
The new idea for a method to quickly transfer data from one device to another is laid out well here, from the intital thinking and requirement, the work done to make a hardware implementations, all the way to a short user study. It is presented clearly, and quite clear then is also that this method as described comes with enormous problems for very many people in the population who do not have very accurate motor skills. While the issue of how intuitive it actually is to fling data from one device to another is not addressed -- is it for example something that users would come up with to try? How much visual or audio queueing does it require? -- the requirements of having to be able to fling data over one user to the user behind them in line-of-sight such that the person in the middle does not receive it puts a very big burden of accurate motion on the user. As their user studies point out, they cannot do it with any reliability of more than, on average, 70% using able-bodied users in a very controlled environment. If my Copy/Paste system only worked 7 out of 10 times in the best of conditions because I couldn't type in the exact right speed, I would probably Toss the system.
Using treemaps to visualize threaded discussion forums on PDAs
Koji Yatani University of Tokyo, Chiba, Japan
Koiti Tamura University of Tokyo, Chiba, Japan
Keiichi Hiroki University of Tokyo, Chiba, Japan
Masanori Sugimoto University of Tokyo, Chiba, Japan
Hiromichi Hashizume National Institute of Informatics, Tokyo, Japan
Conference on Human Factors in Computing Systems archive
CHI '05 extended abstracts on Human factors in computing systems table of contents
Portland, OR, USA
SESSION: Late breaking results: short papers table of contents
Pages: 1881 - 1884
Year of Publication: 2005
ISBN:1-59593-002-7
Abstract:
In recent years, mobile devices have rapidly penetrated into our daily lives. However, several drawbacks of mobile devices have been mentioned so far. The proposed system called Toss-It provides intuitive information transfer techniques for mobile devices, by fully utilizing their mobility. A user of Toss-It can send information from the user's PDA to other electronic devices with a toss or swing action, as the user would toss a ball or deal cards to others. This paper describes the current implementation of Toss-It and its user studies.
My Discussion:
The new idea for a method to quickly transfer data from one device to another is laid out well here, from the intital thinking and requirement, the work done to make a hardware implementations, all the way to a short user study. It is presented clearly, and quite clear then is also that this method as described comes with enormous problems for very many people in the population who do not have very accurate motor skills. While the issue of how intuitive it actually is to fling data from one device to another is not addressed -- is it for example something that users would come up with to try? How much visual or audio queueing does it require? -- the requirements of having to be able to fling data over one user to the user behind them in line-of-sight such that the person in the middle does not receive it puts a very big burden of accurate motion on the user. As their user studies point out, they cannot do it with any reliability of more than, on average, 70% using able-bodied users in a very controlled environment. If my Copy/Paste system only worked 7 out of 10 times in the best of conditions because I couldn't type in the exact right speed, I would probably Toss the system.
Link
Björn Engdahl Royal Institute of Technology, Stockholm, Sweden
Malin Köksal Royal Institute of Technology, Stockholm, Sweden
Gary Marsden University of Cape Town, Cape Town, South Africa
Conference on Human Factors in Computing Systems archive
CHI '05 extended abstracts on Human factors in computing systems table of contents
Portland, OR, USA SESSION: Late breaking results: short papers table of contents
Pages: 1355 - 1358
Year of Publication: 2005
ISBN:1-59593-002-7
Abstract:
This paper describes a new way of visualizing threaded discussion forums on compact displays. The technique uses squarified treemaps to render the threads in discussion forums as colored rectangles, thereby using 100% of the limited screen space. We conducted a preliminary user study, which compared the treemap version and a traditional text based tree interface. This showed that the contents of the discussion forum were easily grasped when using a treemap, even though there were in excess of one hundred threads. In particular our technique showed a significant improvement in time for finding the largest and most active threads. Overall, it was shown that the benefits derived from using treemaps on desktop computers are still valid for small screens.
My Discussion:
Short and sweet results paper describing an experiment with a visualization technique. It highlights that, even with a test-population 6 computer-savvy users, a little user-testing can quickly bring a UI designer's feet back firmly on the ground with regards to something like color coding (the user's did not immediatly understand the coding, much in line with earlier but often neglected experimental results). The visualization technique used, treemaps, can be useful for more than just forums, so papers like this can serve as creative stimulation when having to tackle design problems.
A context based storage system for mobile computing applications
Björn Engdahl Royal Institute of Technology, Stockholm, Sweden
Malin Köksal Royal Institute of Technology, Stockholm, Sweden
Gary Marsden University of Cape Town, Cape Town, South Africa
Conference on Human Factors in Computing Systems archive
CHI '05 extended abstracts on Human factors in computing systems table of contents
Portland, OR, USA SESSION: Late breaking results: short papers table of contents
Pages: 1355 - 1358
Year of Publication: 2005
ISBN:1-59593-002-7
Abstract:
This paper describes a new way of visualizing threaded discussion forums on compact displays. The technique uses squarified treemaps to render the threads in discussion forums as colored rectangles, thereby using 100% of the limited screen space. We conducted a preliminary user study, which compared the treemap version and a traditional text based tree interface. This showed that the contents of the discussion forum were easily grasped when using a treemap, even though there were in excess of one hundred threads. In particular our technique showed a significant improvement in time for finding the largest and most active threads. Overall, it was shown that the benefits derived from using treemaps on desktop computers are still valid for small screens.
My Discussion:
Short and sweet results paper describing an experiment with a visualization technique. It highlights that, even with a test-population 6 computer-savvy users, a little user-testing can quickly bring a UI designer's feet back firmly on the ground with regards to something like color coding (the user's did not immediatly understand the coding, much in line with earlier but often neglected experimental results). The visualization technique used, treemaps, can be useful for more than just forums, so papers like this can serve as creative stimulation when having to tackle design problems.
Link
Sharat Khungar University of Oulu, Finland
Jukka Riekki University of Oulu, Finland
ACM SIGMOBILE Mobile Computing and Communications Review archive
Volume 9 , Issue 1 (January 2005) table of contents COLUMN: Special feature on MOBICOM 2004 posters table of contents
Pages: 64 - 68
Year of Publication: 2005
Abstract:
In this paper, we describe a novel context based storage system that use context to manage user data and make it available to him based on his situation. First, we examine several existing systems that use context with documents. Subsequently, a new storage system is presented that uses context to aid in the capture of and access to documents in mobile environment. We describe file browser and calendar applications that we have developed within our mobile computing infrastructure utilizing the features of context based storage. Novel features of our system include the access rights mechanism for data and support for group activity.
My Discussion:
A nice paper about a system that actually implements some ideas about context-based computing. The system described, CBS, is layered on top of a replicated distributed storage system that can work on wired computers and handhelds, making it appropriate for experiments in including contextual queues like location, time, and participants as metadata to store files.The actual applications do not get many page inches, but already hint at interesting crosslinks between data retrieval and occasions, like storing files with pointers to a meeting so that returning to the meeting becomes an entry portal to the files, that currently is not so easily done. I would like to see future work in this system.
Change In Search
Sharat Khungar University of Oulu, Finland
Jukka Riekki University of Oulu, Finland
ACM SIGMOBILE Mobile Computing and Communications Review archive
Volume 9 , Issue 1 (January 2005) table of contents COLUMN: Special feature on MOBICOM 2004 posters table of contents
Pages: 64 - 68
Year of Publication: 2005
Abstract:
In this paper, we describe a novel context based storage system that use context to manage user data and make it available to him based on his situation. First, we examine several existing systems that use context with documents. Subsequently, a new storage system is presented that uses context to aid in the capture of and access to documents in mobile environment. We describe file browser and calendar applications that we have developed within our mobile computing infrastructure utilizing the features of context based storage. Novel features of our system include the access rights mechanism for data and support for group activity.
My Discussion:
A nice paper about a system that actually implements some ideas about context-based computing. The system described, CBS, is layered on top of a replicated distributed storage system that can work on wired computers and handhelds, making it appropriate for experiments in including contextual queues like location, time, and participants as metadata to store files.The actual applications do not get many page inches, but already hint at interesting crosslinks between data retrieval and occasions, like storing files with pointers to a meeting so that returning to the meeting becomes an entry portal to the files, that currently is not so easily done. I would like to see future work in this system.
Because my binder in the ACM digital library was not updating, I decided to create a new one. Since mobile technology changes so fast, I decided to focus on modern papers. My search string is no longer UI connected mobile devices but is now +connected +2005 +"mobile device" +"user interface".
