Search results for "CKS"

The battle of Konotop as recorded in Cossack chronicles

2016

The battle of Konotop on June 28, 1659 has gained particular resonance as a historical event in the independent Ukraine since the historical narrative has begun to be re-examined and ‘reconstructed’ in a new political climate. This has been possible since the theme of historical confrontation between Ukraine and Russia became free for discussion after many centuries of ta- boo. Interest in the subject has grown and progress in historiography may be acknowledged thanks to several new works published in recent years: these have provided a well-grounded picture of the event, while also raising a number of questions that still need to be investigated for a correct inter- pretation1. The chronic…

Defending Surveillance Sensor Networks Against Data-Injection Attacks Via Trusted Nodes

2018

By injecting false data through compromised sensors, an adversary can drive the probability of detection in a sensor network-based spatial field surveillance system to arbitrarily low values. As a countermeasure, a small subset of sensors may be secured. Leveraging the theory of Matched Subspace Detection, we propose and evaluate several detectors that add robustness to attacks when such trusted nodes are available. Our results reveal the performance-security tradeoff of these schemes and can be used to determine the number of trusted nodes required for a given performance target.

The safety of an industrial archaeological heritage

2013

The present paper analyses an underground and inactive quarry of calcarenite, which belong to a localised area called Cave di calcarenite in Contrada Cuccidenna that has been recognised as a typical example of industrial archaeological heritage. The study of this typical quarry is finalised to the preservation and safe fruition of this site, which represents the history of manufacturing technologies of rocky ashlars. Rock samples from the pillars have been collected and, at first, a petrographic characterisation has been performed. The strength parameters have been estimated by means of triaxial and isotropic compression tests. Through a finite element analysis, the mechanical characterizat…

Microstructure of a Discotic Polymer as Revealed by Electron Diffraction and High-Resolution Imaging

1989

Improving the Quality of the Comply or Explain Approach and Introducing Self-Monitoring Through Online Feedbacks

2017

Codes of corporate governance and comply or explain approach are always at the core of the European Union agenda. This paper will deal both with the evolution of codes of corporate governance across Europe, and with the 2014 Recommendation. The idea put forwards is that regulators, at both EU and national level, should mainly improve the environment where the comply or explain approach is applied and introduce a system of self-monitoring through online feedbacks only. Arguably, this proposal might offer Member States a light-touch way to comply with Art. 11 of the 2014 Recommendation laying down that “[i]n order to motivate companies to comply with the relevant corporate governance code or …

On the synthesis of functionalized porphyrins and porphyrin conjugates via β-aminoporphyrins

2016

International audience; The synthesis of functionalized porphyrins and their conjugates from meso-tetraarylporphyrins through the acylation and the oxidation of beta-aminoporphyrins was investigated. 2,3-Dioxochlorins were prepared by the oxidation of a variety of beta-aminoporphyrins and subsequently used in a condensation reaction with functionalized aromatic aldehydes and ammonium acetate to form beta-functionalized porphyrins bearing a fused imidazole ring. Under optimized experimental conditions both reactions tolerate various functional groups and afford the products in an appropriate overall yield. The mildness and usefulness of this methodology are illustrated by several examples in…

Retallades en l'estat del benestar i burnout

2013

The current recession and economic crisis of capital that is taking place throughout Europe, as well as the antisocial measures that accompany it, are causing the extinction in the short and medium term of the so-called Welfare State, at a different speed in every EU Member State. We are professionals of the social sphere and we are used to work with usual and recent victims of such crisis. However, this time we are victims too as a consequence of the cutbacks, privatization processes and elimination of benefits and services that are being put into practice. As Social Workers we should consider to take action from the teaching, professional practice and scientific thought fronts in order to…

Characterization of spatial porosity and mineral distribution of crystalline rock using X-ray micro computed tomography, C-14-PMMA autoradiography an…

2019

The spatial porosity and mineral distribution of geological materials strongly affects transport processes in them. X-ray micro computed tomography (X-mu CT) has proven to be a powerful tool for characterizing the spatial mineral distribution of geological samples in 3-D. However, limitations in resolution prevent an accurate characterization of pore space especially for tight crystalline rock samples and 2-D methods such as C-14-polymethylmethacrylate (C-14-PMMA) autoradiography and scanning electron microscopy (SEM) are needed. The spatial porosity and mineral distributions of tight crystalline rock samples from Aspo, Sweden, and Olkiluoto, Finland, were studied here. The X-mu CT were use…

On the (In)Security of 1090ES and UAT978 Mobile Cockpit Information Systems : An Attacker Perspective on the Availability of ADS-B Safety- and Missio…

2022

Automatic dependent surveillance-broadcast (ADS-B) is a key air surveillance technology and a critical component of next-generation air transportation systems. It significantly simplifies aircraft surveillance technology and improves airborne traffic situational awareness. Many types of mobile cockpit information systems (MCISs) are based on ADS-B technology. MCIS gives pilots the flight and traffic-related information they need. MCIS has two parts: an ADS-B transceiver and an electronic flight bag (EFB) application. The ADS-B transceivers transmit and receive the ADS-B radio signals while the EFB applications hosted on mobile phones display the data. Because they are cheap, lightweight, an…

Adversarial Attack’s Impact on Machine Learning Model in Cyber-Physical Systems

2020

Deficiency of correctly implemented and robust defence leaves Internet of Things devices vulnerable to cyber threats, such as adversarial attacks. A perpetrator can utilize adversarial examples when attacking Machine Learning models used in a cloud data platform service. Adversarial examples are malicious inputs to ML-models that provide erroneous model outputs while appearing to be unmodified. This kind of attack can fool the classifier and can prevent ML-models from generalizing well and from learning high-level representation; instead, the ML-model learns superficial dataset regularity. This study focuses on investigating, detecting, and preventing adversarial attacks towards a cloud dat…