Detection of Differentially Modified Pathogen Proteins by Western Blot after 2D Gel Electrophoresis and Identification by MALDI-TOF/TOF

in Stulik, J; Toman, R; Butaye, P (Eds.) et al BSL3 and BSL4 agents : proteomics, glycomics, and antigenicity (2011)

The detection of proteomic changes after viral infection, especially those which are due to post-translational modifications of host and pathogen proteins is of particular importance for the understanding ... [more ▼]

The detection of proteomic changes after viral infection, especially those which are due to post-translational modifications of host and pathogen proteins is of particular importance for the understanding of the fast interplay between pathogen and host components in viral infections. The characterization of modified isoforms of such proteins can benefit considerably from the combination of fluorescence labelled monospecific antibodies and 2D-DIGE differential proteomic studies. The potential of this approach is illustrated with a study of essential proteins in a measles virus-host cell system using small 2D gels and low sample amounts. [less ▲]

Detection of Irregular Power Usage using Machine Learning

Scientific Conference (2018)

Electricity losses are a frequently appearing problem in power grids. Non-technical losses (NTL) appear during distribution and include, but are not limited to, the following causes: Meter tampering in ... [more ▼]

Electricity losses are a frequently appearing problem in power grids. Non-technical losses (NTL) appear during distribution and include, but are not limited to, the following causes: Meter tampering in order to record lower consumptions, bypassing meters by rigging lines from the power source, arranged false meter readings by bribing meter readers, faulty or broken meters, un-metered supply, technical and human errors in meter readings, data processing and billing. NTLs are also reported to range up to 40% of the total electricity distributed in countries such as India, Pakistan, Malaysia, Brazil or Lebanon. This is an introductory level course to discuss how to predict if a customer causes a NTL. In the last years, employing data analytics methods such as machine learning and data mining have evolved as the primary direction to solve this problem. This course will present and compare different approaches reported in the literature. Practical case studies on real data sets will be included. As an additional outcome, attendees will understand the open challenges of NTL detection and learn how these challenges could be solved in the coming years. [less ▲]

Detection of pilot contamination attack using random training and massive MIMO

in Personal Indoor and Mobile Radio Communications (PIMRC), 2013 IEEE 24th International Symposium on (2013)

Channel estimation attacks can degrade the performance of the legitimate system and facilitate eavesdropping. It is known that pilot contamination can alter the legitimate transmit precoder design and ... [more ▼]

Channel estimation attacks can degrade the performance of the legitimate system and facilitate eavesdropping. It is known that pilot contamination can alter the legitimate transmit precoder design and strengthen the quality of the received signal at the eavesdropper, without being detected. In this paper, we devise a technique which employs random pilots chosen from a known set of phase-shift keying (PSK) symbols to detect pilot contamination. The scheme only requires two training periods without any prior channel knowledge. Our analysis demonstrates that using the proposed technique in a massive MIMO system, the detection probability of pilot contamination attacks can be made arbitrarily close to 1. Simulation results reveal that the proposed technique can significantly increase the detection probability and is robust to noise power as well as the eavesdropper's power. [less ▲]

Detection of qubit-oscillator entanglement in nanoelectromechanical systems

in Physical Review Letters (2010), 104

Experiments over the past years have demonstrated that it is possible to bring nanomechanical resonators and superconducting qubits close to the quantum regime and to measure their properties with an ... [more ▼]

Experiments over the past years have demonstrated that it is possible to bring nanomechanical resonators and superconducting qubits close to the quantum regime and to measure their properties with an accuracy close to the Heisenberg uncertainty limit. Therefore, it is just a question of time before we will routinely see true quantum effects in nanomechanical systems. One of the hallmarks of quantum mechanics is the existence of entangled states. We propose a realistic scenario making it possible to detect entanglement of a mechanical resonator and a qubit in a nanoelectromechanical setup. The detection scheme is all done by standard current and noise measurements of an atomic point contact coupled to an oscillator and a qubit. This setup could allow for the first observation of entanglement between a continuous and a discrete quantum system in the solid state. [less ▲]

Detection of sparse random signals using compressive measurements

in Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on (2012)

We consider the problem of detecting a sparse random signal from the compressive measurements without reconstructing the signal. Using a subspace model for the sparse signal where the signal parameters ... [more ▼]

We consider the problem of detecting a sparse random signal from the compressive measurements without reconstructing the signal. Using a subspace model for the sparse signal where the signal parameters are drawn according to Gaussian law, we obtain the detector based on Neyman-Pearson criterion and analytically determine its operating characteristics when the signal covariance is known. These results are extended to situations where the covariance cannot be estimated. The results can be used to determine the number of measurements needed for a particular detector performance and also illustrate the presence of an optimal support for a given number of measurements. [less ▲]

Detection of Temporally Correlated Primary User Signal with Multiple Antennas

in International Conference on Cognitive Radio Oriented Wireless Networks (CROWNCOM) (2015)

In this paper, we address the problem of multiple antenna spectrum sensing in cognitive radios (CRs) when the samples of the primary user (PU) signal as well as samples of noise are assumed to be ... [more ▼]

In this paper, we address the problem of multiple antenna spectrum sensing in cognitive radios (CRs) when the samples of the primary user (PU) signal as well as samples of noise are assumed to be temporally correlated. We model and formulate this multiple antenna spectrum sensing problem as a hypothesis testing problem. First, we derive the optimum Neyman-Pearson (NP) detector for the scenario in which the channel gains, the PU signal and noise correlation matrices are assumed to be known. Then, we derive the sub-optimum generalized likelihood ratio test (GLRT)-based detector for the case when the channel gains and aforementioned matrices are assumed to be unknown. Approximate analytical expressions for the false-alarm probabilities of the proposed detectors are given. Simulation results show that the proposed detectors outperform some recently-purposed algorithms for multiple antenna spectrum sensing. [less ▲]

Detention and alternatives to detention in international protection and return procedures in Luxembourg

Report (2021)

The main objective of this study of the European Migration Network is to provide objective and reliable information about the usage of detention and alternatives to detention in international protection ... [more ▼]

The main objective of this study of the European Migration Network is to provide objective and reliable information about the usage of detention and alternatives to detention in international protection and return procedures in Luxembourg. Luxembourgish legislation, namely the amended Law of 29 August 2008 on Free Movement of Persons and Immigration (Immigration Law) and the Law of 18 December 2015 on International Protection and Temporary Protection (Asylum Law), foresees three alternatives to detention: - Alternative 1: Reporting obligations, which includes the obligation to surrender a passport, travel document or identity document; - Alternative 2: Home custody (+ electronic monitoring, if necessary); - Alternative 3: Deposition of a financial guarantee of 5.000€. In principle, the assessment between detention or alternatives to detention is made at the same time as when the grounds for detention are considered, as long as the Directorate of Immigration, as the responsible authority, has all the necessary information to decide if an alternative to detention can be ordered. Furthermore, the possibility to impose an alternative to detention is in principle systemically considered, as both relevant laws foresee that the detention decision is ordered in writing by the Minister on the basis of a case-by-case assessment, where necessary and if other less coercive measures cannot be effectively applied. Grounds for detention are generally rejected in favour of an alternative to detention if the person concerned falls within the category of vulnerable groups and if person is able to proof effective guarantees of representation to prevent the risk of absconding. This latter obligation on the third-country national to revert the legal presumption that there is a risk of absconding remains the main challenge because effective guarantees of representation are not defined by law. This is particularly challenging in the context of return procedures, where this legal presumption exists in nearly all cases where a third-country national has no valid identity, travel or residence documents. In the absence of such effective guarantees of representation, the Minister in charge of Immigration and Asylum generally does not make the decision to apply an alternative to detention. Consequently, the research in the context of this study has shown that alternatives to detention are only rarely used in Luxembourg, with the important exception of home custody in the Emergency Housing Structure of Kirchberg (‘Structure d’hébergement d’urgence Kirchberg’ – SHUK). The SHUK serves as a semi-open return facility for applicants for international protection and irregularly staying third-country nationals whose fingerprints have already been registered in Eurodac by another Member State and are therefore likely to be transferred to that Member State, in accordance with the Dublin III Regulation. A placement at the SHUK corresponds to home custody. The rare use of alternatives to detention also results in the fact that there is generally not much data available in this regard, with the important exception of home custody in the SHUK, which is more widely used. [less ▲]

La détention systématique des personnes secourues en mer et transférées à Malte: comment l'immigration devient une ressource

in Fouchard, Isabelle; Larralde, Jean-Manuel; Lévy, Benjamin (Eds.) et al Les sens de la privation de liberté (2019)

La detenzione “amministrativa” dello straniero e la riserva di giurisdizione in materia di libertà personale.

in Criminalia. Annuario di Scienze Penalistiche (2012)

Determinant representation of the domain-wall boundary condition partition function of a Richardson–Gaudin model containing one arbitrary spin

in Journal of Physics. A, Mathematical and Theoretical (2016)

In this work we present a determinant expression for the domain-wall boundary condition partition function of rational (XXX) Richardson–Gaudin models which, in addition to N-1 spins 1/2, contains one ... [more ▼]

In this work we present a determinant expression for the domain-wall boundary condition partition function of rational (XXX) Richardson–Gaudin models which, in addition to N-1 spins 1/2, contains one arbitrarily large spin S. The proposed determinant representation is written in terms of a set of variables which, from previous work, are known to define eigenstates of the quantum integrable models belonging to this class as solutions to quadratic Bethe equations. Such a determinant can be useful numerically since systems of quadratic equations are much simpler to solve than the usual highly nonlinear Bethe equations. It can therefore offer significant gains in stability and computation speed. [less ▲]