Observations sous Cass., 20 janvier 1994 (n° 6653)

in Revue Pratique des Sociétés Civiles et Commerciales (1994), (4), 408-409

Commentaire de l'une des rares décisions précisant que la règle stipulant l'irrecevabilité de l'action en justice d'une société demeurée en défaut de procéder au dépôt de son acte constitutif au greffe du ... [more ▼]

Commentaire de l'une des rares décisions précisant que la règle stipulant l'irrecevabilité de l'action en justice d'une société demeurée en défaut de procéder au dépôt de son acte constitutif au greffe du tribunal compétent n'est pas d'ordre public [less ▲]

Observer design for Lightweight Robotic arm actuated by Shape Memory Alloy (SMA) wire

in Quintanar Guzman, Serket; Kannan, Somasundar; Voos, Holger (Eds.) et al 14th International Workshop on Advanced Control and Diagnosis, Bucharest, Romania, 16-17 November 2017 (2017)

Observer-Based Approach for Fractional-Order Chaotic Synchronization and Communication

in European Control Conference (ECC), Switzerland, July 17-19, 2013 (2013)

This paper presents a method based on the state observer design for constructing a chaotically synchronized systems. Fractional-order direct Lyapunov theorem is used to derive the closed-loop asymptotic ... [more ▼]

This paper presents a method based on the state observer design for constructing a chaotically synchronized systems. Fractional-order direct Lyapunov theorem is used to derive the closed-loop asymptotic stability. The gains of the observer and observer-based controller are obtained in terms of linear matrix inequalities (LMIs) formulation. The proposed approach is then applied to secure communications. The method combines chaotic masking and chaotic modulation, where the information signal is injected into the transmitter and simultaneously transmitted to the receiver. Chaotic synchronization and chaotic communication are achieved simultaneously via a state observer design technique. An numerical fractional-order chaotic Lorenz system is given to demonstrate the applicability of the proposed approach. [less ▲]

Observer-Based Approach for Fractional-Order Chaotic Synchronization and Secure Communication

in IEEE Journal on Emerging and Selected Topics in Circuits and Systems (2013), 3(3), 442-450

This paper presents a method based on the state observer design for constructing a chaotically synchronized systems. Fractional-order direct Lyapunov theorem is used to derive the closed-loop asymptotic ... [more ▼]

This paper presents a method based on the state observer design for constructing a chaotically synchronized systems. Fractional-order direct Lyapunov theorem is used to derive the closed-loop asymptotic stability. The gains of the observer and observer-based controller are obtained in terms of linear matrix inequalities (LMIs) formulation. The proposed approach is then applied to secure communications. The method combines chaotic masking and chaotic modulation, where the information signal is injected into the transmitter and simultaneously transmitted to the receiver. Chaotic synchronization and chaotic communication are achieved simultaneously via a state observer design technique. The fractional-order chaotic Lorenz and Lü systems are given to demonstrate the applicability of the proposed approach. [less ▲]

Observer-based Event-triggered Attack-Tolerant Control Design for Cyber-physical Systems

in 14th International Workshop on Advanced Control and Diagnosis, Bucharest, Romania, November 2017 (2017, November)

In the present paper, a model-based fault/attack tolerant scheme is proposed to cope with cyber-threats on Cyber Physicals Systems. A common scheme based on observers is designed and a state feedback ... [more ▼]

In the present paper, a model-based fault/attack tolerant scheme is proposed to cope with cyber-threats on Cyber Physicals Systems. A common scheme based on observers is designed and a state feedback control based on an aperiodic event-triggered framework is given with control synthesis and condition on the switching time. Classical fault tolerant control with Bilinear Matrix Inequality (BMI) approaches are used to achieve novel and better security strategy based on an event-triggered control implementation. The purpose in using the event-based implementation would be to reduce (limit) the total number of transmissions to only instances when the networked control system (NCS) needs attention. An illustrative example of the proposed approach applied to a three-tank system is presented. [less ▲]

Observing and assessing non-tidal ocean loading using ocean, continuous GPS and gravity data in the Adriatic area

in Geophysical Research Letters (2004), 31(L23609), 1-5

The effect of nontidal ocean loading (NTOL) is observed in the height series of four permanent GPS stations in the northern Adriatic. A validation of the ECCO model is performed by comparing model ... [more ▼]

The effect of nontidal ocean loading (NTOL) is observed in the height series of four permanent GPS stations in the northern Adriatic. A validation of the ECCO model is performed by comparing model estimates of sea-level anomalies from tide-gauges with TOPEX/ POSEIDON data, and ECCO model estimates of bottom pressure with those derived from temperature and salinity observations. The amplitudes of theECCO sea-level anomaly are found to be 1.4 times smaller than observations; bottom pressure is 2 times smaller. Using a Green’s functions approach to determine elastic deformations, the ECCO ocean bottom pressure is used to estimate surface displacements at the GPS sites. Model results were compared with the height series and with the observed NTOL effect. The height series and the predicted NTOL are highly correlated at all four stations. The analysis performed on superconducting gravimeter data at the Medicina station also shows high correlation. [less ▲]

Observing Many Researchers Using the Same Data and Hypothesis Reveals a Hidden Universe of Uncertainty

E-print/Working paper (2021)

How does noise generated by researcher decisions undermine the credibility of science? We test this by observing all decisions made among 73 research teams as they independently conduct studies on the ... [more ▼]

How does noise generated by researcher decisions undermine the credibility of science? We test this by observing all decisions made among 73 research teams as they independently conduct studies on the same hypothesis with identical starting data. We find excessive variation of outcomes. When combined, the 107 observed research decisions taken across teams explained at most 2.6 of the total variance in effect sizes and 10 of the deviance in subjective conclusions. Expertise, prior beliefs and attitudes of the researchers explain even less. Each model deployed to test the hypothesis was unique, which highlights a vast universe of research design variability that is normally hidden from view and suggests humility when presenting and interpreting scientific findings. [less ▲]

Obstacles in Transfer of Qualification and Knowledge to National Labour Market. Case Study Luxembourg

Scientific Conference (2017, June)

Occitan: 'classical' and 'Mistralian' spelling

in Bunčić, Daniel (Ed.) Biscriptality a sociolinguistic typology (2016)

Occupant Classification Using Range Images

in IEEE Transactions on Vehicular Technology (2007), 56(2)(4), 19831993