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Karlsson, Gunnar, ProfessorORCID iD iconorcid.org/0000-0002-3704-1338
Alternative names
Publications (10 of 28) Show all publications
Karlsson, G. & Lundén, P. (2023). AGILE EDUCATION IMAGINEDA - report from Cybercampus Sweden – Workshop on Agile Education.
Open this publication in new window or tab >>AGILE EDUCATION IMAGINEDA - report from Cybercampus Sweden – Workshop on Agile Education
2023 (English)Other (Other academic)
Abstract [en]

Cybercampus Sweden is a national initiative to provide education, research, innovation and advice in cybersecurity and cyber-defense. This brochure addresses needs for cybersecurity training and education: There is a manifest imbalance between the cybersecurity workforce required in Sweden and the number of skilled graduates being produced by Swedish universities. There is also a gap between the needed cybersecurity skillset and the contents of existing education programs. For these reasons, Cybercampus Sweden aims at building capacity for work force training and to facilitate new cross-university cybersecurity programs, taking advantage of the specific teaching and research expertise from different universities. These comprise bachelor-level programs that provide a strong base with deep technical knowledge, and master-level and continuous education programs that train the cybersecurity workforce needed in Swedish organizations through applied and advanced courses with direct contact to ongoing research.

Publisher
p. 14
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-71496 (URN)
Available from: 2024-01-26 Created: 2024-01-26 Last updated: 2024-01-26Bibliographically approved
Janson, S. & Karlsson, G. (2021). PROMPT LEARNINGS.
Open this publication in new window or tab >>PROMPT LEARNINGS
2021 (English)Report (Other academic)
Abstract [en]

The PROMPT project has resulted in a great number of second cycle courses for professionals in software engineering and development. It has also led to an accumulation of learning experiences regarding the offering of such courses online. This report summarizes the learnings that project partner RISE has made and its contributions towards the common project goal of establishing a catalog of continuous-education courses for Swedish software industry. We report on how courses should be designed and conducted. The experience is that a clear structure and set of goals is needed, with teaching that activates the participants and supports retention. Professional training may require different formats for given contents to suit both part-time students as well as those who quickly want to learn full-time. Online education requires good system support and we summarize the experiences from Scalable Learning, a tool provided by RISE, which can inform other system providers of useful functionality. We end with a look at design exercises for the future of technical universities.

Publisher
p. 24
Series
RISE Rapport ; 2021:52
Keywords
Continuous education, life-long learning, professional training, online learning, distance education, software engineering, network course, pedagogics
National Category
Pedagogy
Identifiers
urn:nbn:se:ri:diva-56099 (URN)978-91-89385-41-2 (ISBN)
Available from: 2021-08-26 Created: 2021-08-26 Last updated: 2023-06-08Bibliographically approved
Hagsand, O., Más, I., Marsh, I. & Karlsson, G. (2004). Self-admission control for ip telephony using early quality estimation (1ed.). In: NETWORKING 2004, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications (Third International IFIP-TC6 Networking Conference, Athens, Greece, May 9-14, 2004. Proceedings): (pp. 381-391). Springer
Open this publication in new window or tab >>Self-admission control for ip telephony using early quality estimation
2004 (English)In: NETWORKING 2004, Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications (Third International IFIP-TC6 Networking Conference, Athens, Greece, May 9-14, 2004. Proceedings), Springer , 2004, 1, , p. 1513p. 381-391Chapter in book (Refereed)
Abstract [en]

If quality of service could be provided at the transport or the application layer, then it might be deployed simply by software upgrades, instead of requiring a complete upgrade of the network infrastructure. In this paper, we propose a self-admission control scheme that does not require any network support or external monitoring schemes. We apply the admission control scheme to IP telephony as it is an important application benefiting from admission control. We predict the quality of the call by observing the packet loss over a short initial period using an in-band probing mechanism. The quality prediction is then used by the application to continue or to abort the call. Using over 9500 global IP telephony measurements, we show that it is possible to accurately predict the quality of a call. Early rejection of sessions has the advantage of saving valuable network resources plus not disturbing the on-going calls.

Place, publisher, year, edition, pages
Springer, 2004. p. 1513 Edition: 1
Series
Lecture Notes in Computer Science ; 3042
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22346 (URN)10.1007/b97826 (DOI)978-3-540-21959-0 (ISBN)
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2023-05-19Bibliographically approved
Marsh, I., Li, F. & Karlsson, G. (2003). Wide Area Measurements of Voice Over IP Quality (1ed.). Swedish Institute of Computer Science
Open this publication in new window or tab >>Wide Area Measurements of Voice Over IP Quality
2003 (English)Report (Other academic)
Abstract [en]

Time, day, location and instantaneous network conditions largely dictate the quality of Voice over IP calls. In this paper we present the results of over 18000 VoIP measurements, taken from nine sites connected in a full-mesh configuration. We measure the quality of the routes on a hourly basis by transmitting a pre-recorded call between a pair of sites. We repeat the procedure for all nine sites during the one hour interval. Based on the obtained jitter, delay and loss values as defined in RFC 1889 (RTP) we conclude that the VoIP quality is acceptable for all but one of the nine sites we tested. We also conclude that VoIP quality has improved marginally since we last conducted a similar study in 1998.

Place, publisher, year, edition, pages
Swedish Institute of Computer Science, 2003. p. 10 Edition: 1
Series
SICS Technical Report, ISSN 1100-3154 ; T2003:08
Keywords
VoIP, Measurement, loss, delay, jitter
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22047 (URN)
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2023-05-19Bibliographically approved
Dam, M., Karlsson, G. & Sadighi, B. (2002). A research agenda for distributed policy-based management (2ed.). In: Proceedings of RVK'02, Radiovetenskap och Kommunikation: . Paper presented at RVK'02, Radiovetenskap och Kommunikation, 10-13 June 2002, Stockholm, Sweden.
Open this publication in new window or tab >>A research agenda for distributed policy-based management
2002 (English)In: Proceedings of RVK'02, Radiovetenskap och Kommunikation, 2002, 2Conference paper, Published paper (Refereed)
Abstract [en]

Policy-based management is based on defining a set of global rules, according to which a network or distributed system must operate. In the last few years, policy-based management has begun to emerge as the dominant paradigm for developing network and systems management functions, primarily, since it can reduce complexity in management applications. Although attempts are underway to standardize policy-based management, significant research challenges remain. At KTH and SICS, a joint activity has been started to focus on some of the key issues. The paper outlines the research agenda for this activity.

National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22510 (URN)
Conference
RVK'02, Radiovetenskap och Kommunikation, 10-13 June 2002, Stockholm, Sweden
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2020-12-02Bibliographically approved
Nilsson, S. & Karlsson, G. (1999). IP-address lookup using LC-tries (1ed.). IEEE Journal on Selected Areas in Communications, 17(6), 1083-1092
Open this publication in new window or tab >>IP-address lookup using LC-tries
1999 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008, Vol. 17, no 6, p. 1083-1092Article in journal (Refereed) Published
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22732 (URN)
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2023-03-14Bibliographically approved
Karlsson, G. & Orava, F. (1999). The DIY approach to QoS (1ed.). In: Proceedings of Seventh International Workshop on Quality of Service (IWQOS), 6-8 June 1999, London, UK: . Paper presented at Seventh International Workshop on Quality of Service (IWQOS), 6-8 June 1999, London, UK.
Open this publication in new window or tab >>The DIY approach to QoS
1999 (English)In: Proceedings of Seventh International Workshop on Quality of Service (IWQOS), 6-8 June 1999, London, UK, 1999, 1Conference paper, Published paper (Refereed)
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22726 (URN)
Conference
Seventh International Workshop on Quality of Service (IWQOS), 6-8 June 1999, London, UK
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2020-07-29Bibliographically approved
Mowbray, M., Karlsson, G. & Köhler, T. (1998). Capacity reservation for multimedia traffics (1ed.). Distributed Systems Engineering, 5(1), 12-18
Open this publication in new window or tab >>Capacity reservation for multimedia traffics
1998 (English)In: Distributed Systems Engineering, ISSN 0967-1846, E-ISSN 1361-6390, Vol. 5, no 1, p. 12-18Article in journal (Refereed) Published
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22787 (URN)
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2020-07-29Bibliographically approved
Nilsson, M. & Karlsson, G. (1998). Fast address lookup for Internet routers (1ed.). In: Broadband Communications: The future of telecommunications. Paper presented at Fourth International Conference on Broadband Communications (BC '98), 1-4 Apr 1998, Stuttgart, Germany (pp. 11-22). Paper presented at Fourth International Conference on Broadband Communications (BC '98), 1-4 Apr 1998, Stuttgart, Germany. London: Elsevier, 22
Open this publication in new window or tab >>Fast address lookup for Internet routers
1998 (English)In: Broadband Communications: The future of telecommunications, London: Elsevier , 1998, 1, Vol. 22, p. 11-22Chapter in book (Refereed)
Place, publisher, year, edition, pages
London: Elsevier, 1998 Edition: 1
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22792 (URN)0-412-84410-9 (ISBN)
Conference
Fourth International Conference on Broadband Communications (BC '98), 1-4 Apr 1998, Stuttgart, Germany
Note

Paper from Fourth International Conference on Broadband Communications (BC '98), 1-4 Apr 1998, Stuttgart, Germany.

Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2020-07-29Bibliographically approved
Karlsson, G. & Djuknic, G. (1998). On the efficiency of statistical-bitrate service for video. In: Performance of Information and Communication Systems: (pp. 205-215). Kluwer Academic Publishers
Open this publication in new window or tab >>On the efficiency of statistical-bitrate service for video
1998 (English)In: Performance of Information and Communication Systems, Kluwer Academic Publishers , 1998, , p. 344p. 205-215Chapter in book (Refereed)
Place, publisher, year, edition, pages
Kluwer Academic Publishers, 1998. p. 344
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:ri:diva-22820 (URN)0412837307 (ISBN)
Available from: 2016-10-31 Created: 2016-10-31 Last updated: 2020-07-29Bibliographically approved
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Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-3704-1338

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