| 1. |
- Asplund, Mikael, 1981-, et al.
(författare)
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Emerging Information Infrastructures : Cooperation in Disasters
- 2009
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Ingår i: Critical Information Infrastructure Security. - Berlin, Heidelberg : Springer Berlin/Heidelberg. - 9783642035517 - 9783642035524 ; , s. 258-270
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Konferensbidrag (refereegranskat)abstract
- In this paper we describe how to include high level semantic information, such as aesthetics and emotions; into Content Based Image Retrieval. We present a, color-based emotion-related image descriptor that can be used for describing the emotional content of images. The color emotion metric used is derived from psychophysical experiments rind based oil three variables: activity, weight and teat. It was originally designed for single-colors, bill, recent research has shown that the salve emotion estimates call be applied in the retrieval of multi-colored images. Here we describe a new approach, based oil the assumption that perceived color emotions in images are mainly affected by homogenous regions, defined by the emotion metric; and transitions between regions. RGB coordinates are converted to emotion coordinates, mid for each emotion channel, statistical measurements of gradient magnitudes within a. stack of low-pass filtered images are used for finding interest; points corresponding to homogeneous regions and transitions between regions. Emotion characteristics are derived for patches surrounding cacti interest, point, and saved in a, bag-of-emotions; that for instance, can be used for retrieving images based oil emotional content.
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| 2. |
- Asplund, Mikael, et al.
(författare)
-
Emerging Information Infrastructures : Cooperation in Disasters
- 2009
-
Ingår i: Critical Information Infrastructure Security. - Berlin : Springer. - 9783642035517 ; , s. 258-270
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- Disasters are characterised by their devastating effect on human lives and the society’s ability to function. Unfortunately, rescue operations and the possibility to re-establish a working society after such events is often hampered by the lack of functioning communication infrastructures. This paper describes the challenges ahead in creating new communication networks to support post-disaster operations, and sets them in the context of the current issues in protection of critical infrastructures. The analysis reveals that while there are some common concerns there are also fundamental differences. The paper serves as an overview of some promising research directions and pointers to existing works in these areas.
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| 3. |
- Flammini, Francesco, Senior Lecturer, 1978-, et al.
(författare)
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A study on multiformalism modeling of critical infrastructures
- 2009
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Ingår i: Critical Information Infrastructure Security. CRITIS 2008. - Berlin, Heidelberg : Springer. - 3642035515 - 9783642035517 ; , s. 336-343
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Konferensbidrag (refereegranskat)abstract
- This paper explores the possibility of using multiformalism techniques for critical infrastructure modeling and proposes a general scheme for intra and inter infrastructure models. Multiformalism approaches allow modelers to adapt the choice of formal languages to the nature, complexity and abstraction layer of the subsystems to be modeled. Another advantage is the possibility of reusing existing (and validated) dependability models and solvers. Complexity and heterogeneity are managed through modularity, and composition allows for representing structural or functional dependencies. © 2009 Springer Berlin Heidelberg.
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| 4. |
- Flammini, Francesco, Senior Lecturer, 1978-, et al.
(författare)
-
Quantitative security risk assessment and management for railway transportation infrastructures
- 2009
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Ingår i: Critical Information Infrastructure Security. CRITIS 2008. - Berlin, Heidelberg : Springer. - 3642035515 - 9783642035517 ; , s. 180-189
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Konferensbidrag (refereegranskat)abstract
- Scientists have been long investigating procedures, models and tools for the risk analysis in several domains, from economics to computer networks. This paper presents a quantitative method and a tool for the security risk assessment and management specifically tailored to the context of railway transportation systems, which are exposed to threats ranging from vandalism to terrorism. The method is based on a reference mathematical model and it is supported by a specifically developed tool. The tool allows for the management of data, including attributes of attack scenarios and effectiveness of protection mechanisms, and the computation of results, including risk and cost/benefit indices. The main focus is on the design of physical protection systems, but the analysis can be extended to logical threats as well. The cost/benefit analysis allows for the evaluation of the return on investment, which is a nowadays important issue to be addressed by risk analysts. © 2009 Springer Berlin Heidelberg.
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