| 1. |
- Sutinen, Martti, et al.
(author)
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Web-Based Analytical Decision Support System
- 2010
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In: Proceedings of the 2010 10th International Conference on Intelligent Systems Design and Applications, ISDA'10. - : IEEE conference proceedings. - 9781424481347 - 9781424481354 ; , s. 575-579
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Conference paper (peer-reviewed)abstract
- This paper presents a web-application supporting structured decision modelling and analysis. The application allows for decision modelling with respect to different preferences and views, allowing for numerically imprecise and vague background probabilities, values, and criteria weights, which further can be adjusted in an interactive fashion when considering calculated decision outcomes. The web-application is based on a decision tool that has been used in a large number of different domains over the last 15 years, ranging from investment decision analysis for companies to public decision support for local governments.
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| 2. |
- Humble, Niklas, et al.
(author)
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Design science for Small Scale Studies : Recommendations for Undergraduates and Junior Researchers
- 2023
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In: European Conference on Research Methodology for Business and Management Studies. - Reading (UK) : Academic Conferences and Publishing International Limited. - 9781914587719 - 9781914587726 ; , s. 87-92
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Conference paper (peer-reviewed)abstract
- Design science is a research methodology that can be applied for both small scale studies at undergraduate level and for large scale application in the industry. Design science is a research methodology with several branches, with slightly different processes built around a common foundation. This paper has a focus on the branch developed by Johannesson and Perjons, and the five-phase model that is included in this branch: 1) explicate problem, 2) define requirements, 3) design and develop artefact, 4) demonstrate artefact, and 5) evaluate artefact. All these five phases must of course be carried out in a complete large-scale project in many real-world developments. However, the problem with applying a design science research project for undergraduates is that a thorough implementation of all the five phases is often too demanding for a Bachelor’s or a Master's thesis. A reason for this is that several of the phases are better carried out in an iterative manner to obtain a quality result, which is time-consuming. The aim of this paper is to discuss the challenges and opportunities in applying design science for small scale studies, such as those conducted by undergraduates in their theses or by researchers new to the field. Based on this discussion, the paper concludes with a set of recommendations for how the design science methodology can be modified and applied to accommodate these smaller studies. The main recommendation is, as the principle for quality research, to delimit and to choose a specific focus that is carried out in depth. Some examples of focuses, that also are recommended by Johannesson and Perjons, are requirements and development focused design science research or evaluation focused design science research. An interesting follow-up to this position paper would be to study the application of design science in Bachelor’s theses and where the emphasis is placed? Moreover, it would be interesting to investigate how design science is applied by researchers and compare if their emphasis in the design science methodology differs from that of undergraduates.
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| 3. |
- Sodhro, Ali Hassan, 1986-, et al.
(author)
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Internet of medical things for independent living and re-learning
- 2021
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In: GLOBAL HEALTH 2021 : The Tenth International Conference on Global Health Challenges At: Barcelona, Spain. - 9781612088921 ; , s. 1-5, s. 1-5
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Conference paper (other academic/artistic)abstract
- This position paper gives better insight about the role and importance of Internet of Medical Things (IoMT) for independent living and re-learning for older adults. Sensing Technologies are the paradigm shift for transforming conventional healthcare practices into the smart, and self-assisted activities, which are envisioned for today's medical world. Internet of Things (IoT) and IoMT are the interrelated technologies for promoting independent living and re-learning practices. In this paper, re-learning is defined as the process for adults to recover useful instrumental activities of daily living skills that have been lost after an impairment.
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| 4. |
- Ekenberg, Love, et al.
(author)
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Second order effects in interval valued decision graph models
- 2005
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In: Proceedings of the Eighteenth International Florida Artificial Intelligence Research Society Conference, FLAIRS 2005 - Recent Advances in Artifical Intelligence. - : AAAI Press. - 1577352343 ; , s. 728-733
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Conference paper (peer-reviewed)abstract
- Second-order calculations may significantly increase a decision maker's understanding of a decision situation when handling aggregations of imprecise representations, as is the case in decision trees or influence diagrams, while the use of only first-order results gives an incomplete picture. The results apply also to approaches which do not explicitly deal with second-order distributions, instead using only first-order concepts such as upper and lower bounds.
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| 5. |
- Asproth, Viveca, et al.
(author)
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Communication and Information Exchange among SMEs and their local environment
- 2007
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In: IRIS 30. - Tampere.
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Conference paper (peer-reviewed)abstract
- In this paper the results from a pilot study in the project Arena for Sustainable Innovative Development of small and medium-sized enterprises. The project aims to create and test a model for collaboration and sustainable development among small and medium sized companies in local areas. The questions raised in the study were: What kind of problems and requirements can be found in small enterprises with respect to information exchange and communication with others? Which information is needed to promote active engagement among the interested parties? How does the knowledge creation and exchange work between the actors? The method used was qualitative and explorative with semi-structured interviews.
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| 6. |
- Eriksson, Magnus, et al.
(author)
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Dynamic Radio Resource Management Schemes for Interactive Services in DVB-T and DAB
- 1999
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In: Proceedings of Radiovetenskap och kommunikation. - Karlskrona : Högskolan i Karlskrona/Ronneby. - 9163081563
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Conference paper (other academic/artistic)abstract
- The topic of this paper is dynamic schemes for downlink packet radio resource management. The results can be applied to personal communication services in the terrestrial digital video and audio broadcasting systems (DVB-T and DAB). Dynamic single frequency networks (DSFN) are investigated, meaning that the macro diversity capability of the COFDM modulation scheme is utilised for cellular communication. The concept of PARPS (Packet and Resource Plan Scheduling) is introduced. PARPS reduces the combined problem of dynamic radio resource management, including DSFN, dynamic channel allocation, power control, link adaptation, etc, to a scheduling problem. We propose several optimised and heuristic PARPS schemes. Our results show that some of the heuristic schemes have near-optimal delay performance. We also have results indicating that the capacity of the PARPS schemes for 2D Poisson traffic can be evaluated with static analyses, i.e. without simulation of a queuing system.
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| 7. |
- Eriksson, Magnus
(author)
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Evaluation of Packet-by-Packet Downlink Radio Resource Management Schemes
- 2001
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In: IEEE VTS 53rd vehicular technology conference, 2001. VTC 2001 spring, vol. 2. - New York : IEEE. - 0780367286 ; , s. 967-971
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Conference paper (peer-reviewed)abstract
- The OFDM based terrestrial digital video broadcasting system (DVB-T) can be utilized for asymmetric Internet access with a downlink peak bit rate of 10-20Mbps. A narrow-band cellular communications system can be used as uplink. This paper is a comparison of centralized dynamic radio resource management schemes for this downlink packet radio system. Spectrum efficiency in bit/s/Hz/transmitter, and fairly shared spectrum efficiency in bit/s/Hz/transmitter, are evaluated for a best-effort traffic snapshot model. The Dynamic Packet Assignment (DPA) algorithm performs combined packet scheduling and rapid Dynamic Channel Allocation. Even better performance is achieved by the Dynamic Single Frequency Networks (DSFN) scheme. It exploits the macro-diversity capability of OFDM modulation. The base station transmitters are dynamically divided into groups that send the same information at the same channel frequency simultaneously.
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| 8. |
- Eriksson, Magnus, et al.
(author)
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The Concepts of PARPS : Packet and Resource Plan Scheduling
- 1999
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In: Multiaccess, Mobility and Teletraffic for Wireless Communications (MMT '99), Venice, Italy, October 6-8, 1999.
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Conference paper (other academic/artistic)abstract
- Dynamic schemes for downlink packet radio resource management (RRM) are the topic of this paper. The concept of PARPS (Packet And Resource Plan Scheduling) is introduced. PARPS reduces the combined proble m of dynamic RRM, including statistical multiplex, dynamic channel allocation, power control, link adaptation, reuse partitioning, soft handover, admission control, etc, to a scheduling problem. PARPS makes it possible to achieve dynamic RRM individually for each data packet, without performing signal-to-interference ratio calculations for every single packet. A PARPS algorithm assigns a so-called resource plan to each timeslot, and assigns data packets to timeslots and transmitters. A resource plan is a combination of several radio parameters, e.g. transmitter power levels, coding rates and modulation schemes, for a group of centrally controlled and synchronised transmitters. We propose several optimised and heuristic PARPS algorithms. Optimised PARPS is NP hard, i.e. it is not realistic to solve in real time for a big system, but it can be used for finding an upper bound for the compound effect of several RRM techniques by means of computer simulations. The heuristic algorithms are realistic to implement in real systems. Our results show that some of the heuristic algorithms have delay performance very near an optimised algorithm, and that the capacity and coverage of a set of resource plans for 2D Poisson traffic can be evaluated with static analyses, i.e. without queuing system simulation. We apply PARPS to cellular systems based on the COFDM modulation scheme. Especially, we have personal communication services in the MEMO system in mind, where the terrestrial digital audio or video broadcasting system (DAB or DVB-T) is used as a broadband downlink, in combination with some narrowband uplink, e.g. GSM.
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| 9. |
- Forsström, Stefan, 1984-, et al.
(author)
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Collecting Indoor Environmental Sensor Values for Machine Learning Based Smart Building Control
- 2021
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In: IoTaIS 2020 - Proceedings. - : Institute of Electrical and Electronics Engineers Inc.. - 9781728194486 ; , s. 37-43
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Conference paper (peer-reviewed)abstract
- This research presents a solution for collecting indoor environmental sensor values and how the gathered sensor values then could be used for green building certification and in turn also machine learning based smart building control. We have created and implemented a proof of concept system consisting of a sensor collecting device using off the shelf hardware to complement the existing sensor information from buildings, as well as a cloud system for persistently storing this data for later usage. We have measured and evaluated our implemented system for our envisioned scenarios. In which we could observe that our proof-of-concept could scale to handle almost four sensor value updates per second at maximum stress, as well as having a latency for uploading a sensor value from our sensor of about 130 ms. Finally, we present our future and ongoing work based on these results which outlines our work for smart building control, green building certification, and the energy signature of buildings.
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| 10. |
- Idefeldt, Jim, et al.
(author)
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Multi-Criteria Decision Analysis Software for Uncertain and Imprecise Information
- 2006
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In: Proceedings of the 11th Annual Conference of Asia Pacific Decision Sciences Institute - INNOVATION & SERVICE EXCELLENCE FOR COMPETITIVE ADVANTAGE IN THE GLOBAL ENVIRONMENT. - : ASIA PACIFIC DECISION SCIENCES INST. ; , s. 342-345, s. 342-
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Conference paper (peer-reviewed)abstract
- This paper presents a multi-criteria decision tool built on theories of uncertainty representation and evaluation. The tool supports interval probabilities, interval values (utili¬ties), interval criteria weights, as well as com¬para¬tive statements, not requiring input on single variables, but rather allowing interval statements on differences between variables. The user input is represented as constraints to the solution set of the variables representing the decision problem. The problem is then evaluated using several available evaluation methods each giving a different perspective on the decision problem modeled. Instead of applying separate sensitivity analyses on top of the evalua¬tion, it tries to incorporate the sensitivity analyses into the repre¬sentation, making uncertainty a first-class citizen in the model. The support of interval and comparative state¬ments, in addition to embedded sensitivity analyses and optionally using separate probabilistic event trees for each criterion, makes the tool, to our knowledge, the first of its kind.
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