| 1. |
- Fjelstad, Jens
(författare)
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On 7-D TFT and 6-D chiral CFT
- 2002
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Annan publikation (populärvet., debatt m.m.)abstract
- We perform a canonical and BRST analysis of a seven-dimensional Chern-Simons theory on a manifold with boundary. The main result is that the 7D theory induces for consistency a chiral two-form on the 6D boundary. We also comment on similar behaviour in a five-dimensional Chern-Simons theory relevant for $\N=4$ supersymmetric Yang-Mills theory in four dimensions.
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| 2. |
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| 3. |
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| 4. |
- Biel, Lena, et al.
(författare)
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Active perception in a sensor fusion model
- 2002
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- During the last decades the research in the sensor fusion area has mainly been focused on fusion methods and feature selection methods. A possible further development in this area is to incorporate a process referred to as active perception. This means that the system is able to manipulate the sensing mechanisms to create a focus on selected information in the surrounding environment. This process may also be able to handle the feature selection process with respect to which features to be used and/or the number of features to use. This paper presents a model that contains a decision system based on active perception integrated with previous sensor fusion algorithms. The human body has perhaps one of the most advanced perceptual processing systems. The human perception process can be divided into sensation (measurement collection) and perception (interpret the surroundings). During the sensation process a huge amount of data is collected from different sensors that reflect the environment. The information has to be interpreted in an effective way, i.e. in the fusion process. The interpretation together with a decision system to control the sensors to focus on important information will correspond to the (active) perception process. The model presented in this paper capitalizes on the properties presented by the biological counterpart to achieve more human-like processes for a sensor fusion. Finally, the paper presents the testing of the model in two examples. The applications used have a safety approach of fire indication, identification and decision-making. The goal is to enlarge a conventional fire alarm system to not only detect fire, but also to propose different actions for a human in a dangerous area for example.
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| 5. |
- Biel, Lena, et al.
(författare)
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ECG analysis : a new approach in human identification
- 2001
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- In this paper a new approach in human identification is investigated, For this purpose, a standard 12-lead electrocardiogram (ECG) recorded during rest is used. Selected features extracted from the ECG are used to identify a person in a predetermined group. Multivariate analysis is used for the identification task. Experiments show that it is possible to identify a person by features extracted from one lead only. Hence, only three electrodes have to be attached on the person to be identified. This makes the method applicable without too much effort.
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| 6. |
- Edvardsson, Bo, 1944-
(författare)
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Kryssboxarnas tyranni - ett enkätexempel
- 2002
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Annan publikation (populärvet., debatt m.m.)abstract
- En artikel där ett konkret exempel med missbruk av enkätteknik inordnat i politiskt maktmissbruk diskuteras. (2 sidor)
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