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- Jao, C. -S, et al.
(författare)
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Zero Velocity Detector for Foot-mounted Inertial Navigation System Assisted by a Dynamic Vision Sensor
- 2020
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Ingår i: 2020 DGON Inertial Sensors and Systems, ISS 2020 - Proceedings. - : Institute of Electrical and Electronics Engineers Inc..
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Konferensbidrag (refereegranskat)abstract
- In this paper, we proposed a novel zero velocity detector, the Dynamic-Vision-Sensor (DVS)-Aided Stance Phase Optimal dEtection (SHOE) detector, for Zero-velocity-UPdaTe (ZUPT)-Aided Inertial Navigation Systems (INS) augmented by a foot-mounted event-based camera DVS128. We observed that the firing rate of the DVS consistently increased during the swing phase and decreased during the stance phase in indoor walking experiments. We experimentally determined that the optimal placement configuration for zero-velocity detection is to mount the DVS next to an Inertial Measurement Unit (IMU) and face the sensor outward. The DVS-SHOE detector was derived in a General Likelihood Ratio Test (GLRT) framework, combining statistics of the conventional SHOE detector and the DVS firing rate. This paper used two methods to evaluate the proposed DVS-SHOE detector. First, we compared the detection performances of the SHOE detector and the DVS-SHOE detector. The experimental results showed that the DVS-SHOE detector achieved a lower false alarm rate than the SHOE detector. Second, we compared the navigation performance of the ZUPT-Aided INS using the SHOE detector and the DVS detector. The experimental results showed that the Circular Error Probable (CEP) of the case using DVS-SHOE was reduced by around 25 % from 1.2 m to 0.9 m, as compared to the case of the SHOE detector.
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- Kowalski, Stewart, et al.
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Two case studies in using chatbots for security training
- 2013
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Ingår i: IFIP Advances in Information and Communication Technology. - Berlin, Heidelberg : Springer Berlin Heidelberg. - 9783642393761 ; , s. 265-272
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Konferensbidrag (refereegranskat)abstract
- This paper discusses the result of two case studies performed in a large international company to test the use of chatbots for internal security training. The first study targeted 26 end users in the company while the second study examined 80 security specialists. From a quantitative analytical perspective there does not appears to be any significant findings when chatbots are used for security training. However there does appear to be qualitative data that suggest that the attitudes of the respondents appear to be more positive to security when chatbots are used than with the current traditional e-learning security training courses at the company.
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- Nohlberg, Marcus, et al.
(författare)
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Ask and you shall know : Using interviews and the SBC model for social-engineering penetration testing
- 2008
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Ingår i: IMETI - Int. Multi-Conf. Eng. Technol. Innov., Proc.. - Orlando : International Institute of Informatics and Systemics. - 1934272434 - 9781934272435 ; , s. 121-128
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Konferensbidrag (refereegranskat)abstract
- This paper presents the result of a case study where the SBC model was used as a foundation to perform semi-structured interviews to test the security in a medical establishment. The answers were analyzed and presented in an uncomplicated graph. The purpose was to study the feasibility of letting the users participate, instead of exploiting their weaknesses. It was found that the approach of interviewing the subjects rendered interesting, and relevant, results, making it an approach that should be studied further due to its apparent gains: less ethically troublesome penetration testing, increased awareness, improved coverage and novel information as added bonuses.
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