The digitalization of public life modifies old phenomena. Some of these changes prove to be detrimental to certain public spheres, including politics. Digital hate speech is one of the most obvious ...examples of digitalization’s impact on political processes. The manifestation of hatred online became an urgent challenge to political systems globally. In this respect, a theoretical and practical elaboration is necessary to counter the new threat. This study aims to identify the social mechanisms that make hate speech an instrument in information campaigns. The article illustrates the discursive and emotional aspects of the public manifestation of hatred. The theoretical basis of this work is the theory of “emotional regimes” and the concept of “regimes of truth”, which express the mutual influence of subjectivity and public discourse. Comparing the theoretical framework with the practical aspects of hate speech demonstrates that digital platforms and social networks form an environment that accelerates and facilitates the dissemination of hatred in the public space. As a result, various forms of hatred are accepted as a new social norm, which leads to such phenomena as harassment, humiliation, or even physical persecution. The modern technical reality allows to instrumentalize hate speech for manipulation, which results in three main scenarios for social impact: 1) large impact with low personalization; 2) targeted impact with high personalization; 3) broad and decentralized targeted impact using artificial intelligence. While countering each of these scenarios, a key challenge is to combine long-term and specialized measures.
This study analyses EU and Lithuanian documents on countering disinformation/fake news to present the plurality of the Union’s approaches to ensuring resilience. Currently, there are three approaches ...to the problem in the EU. The first one, used by the European Commission, is the recognition of citizens’ right to information as well as of the need to promote critical thinking and information literacy. This approach fits into the adaptive paradigm of action in the information space and the concept of autopoietic resilience. The second approach, taken by the European External Action Service, is to expose fake news and the media spreading it. In combining adaptive and paternalistic paradigms of action in the information space, this approach employs a more static interpretation of resilience. Lithuania has adopted a third approach, which is dominated by the paternalistic paradigm and homeostatic resilience. This approach consists of the state isolating citizens from certain information. Thus, the popular use of the term ‘resilience’ in the EU disguises the plurality of approaches to both disinformation and resilience itself. Theoretically, this study draws on the concept of resilience and paradigms for countering disinformation/fake news. Methodologically, it relies on critical discourse analysis. The article suggests several possible causes of intra-EU differences in countering disinformation/fake news/propaganda and interpreting resilience
The KASCADE experiment measures extensive air showers induced by cosmic rays in the energy range around the so-called knee. The data of KASCADE have been used in a composition analysis showing the ...knee at 3–5
PeV to be caused by a steepening in the light-element spectra T. Antoni et al., (KASCADE Coll.), Astropart. Phys. 24 (2005) 1–25. Since the applied unfolding analysis depends crucially on simulations of air showers, different high-energy hadronic interaction models (QGSJet and SIBYLL) were used. The results have shown a strong dependence of the relative abundance of the individual mass groups on the underlying model. In this update of the analysis we apply the unfolding method with a different low energy interaction model (FLUKA instead of GHEISHA) in the simulations. While the resulting individual mass group spectra do not change significantly, the overall description of the measured data improves by using the FLUKA model. In addition data in a larger range of zenith angle are analysed. The new results are completely consistent, i.e. there is no hint to any severe problem in applying the unfolding analysis method to KASCADE data.
Aims.The capability of radio antenna arrays to measure cosmic ray air showers with very large zenith angles is explored. This is important, since a possible neutrino detection has to fulfill two ...requirements. First: antennas should be able to detect very inclined cosmic ray air showers, and second: it should be possible to estimate the distance to the shower maximum, since neutrinos are most likely to travel far through the Earth's atmosphere without interaction and induce air showers close to the ground. Methods.LOPES (LOFAR PrototypE Station; LOFAR – LOw Frequency ARray), an array of dipole antennas, is used for the detection of inclined cosmic ray air showers. LOPES is co-located and triggered by the KASCADE (KArlsruhe Shower Core and Array DEtector) experiment, which also provides information on air shower properties such as electron and muon numbers on the ground, as well as the arrival direction. Radio emission of nearly vertical cosmic ray air showers has been detected by LOPES. Results.LOPES-10 (the first phase of LOPES, consisting of 10 antennas) detected a significant number of cosmic ray air showers with a zenith angle larger than 50°, and many of these have very high radio field strengths. The most inclined event that has been detected with LOPES-10 has a zenith angle of almost 80°. This is proof that the new technique is also applicable for cosmic ray air showers with high inclinations, which in the case that they are initiated close to the ground, can be a signature of neutrino events. Conclusions.Our results indicate that arrays of simple radio antennas can be used for the detection of highly inclined air showers, which might be triggered by neutrinos. In addition, we found that the radio pulse height (normalized with the muon number) for highly inclined events increases with the geomagnetic angle, which confirms the geomagnetic origin of radio emission in cosmic ray air showers.
The nature of ultrahigh-energy cosmic rays (UHECRs) at energies >1020 eV remains a mystery. They are likely to be of extragalactic origin, but should be absorbed within ∼50 Mpc through interactions ...with the cosmic microwave background. As there are no sufficiently powerful accelerators within this distance from the Galaxy, explanations for UHECRs range from unusual astrophysical sources to exotic string physics. Also unclear is whether UHECRs consist of protons, heavy nuclei, neutrinos or γ-rays. To resolve these questions, larger detectors with higher duty cycles and which combine multiple detection techniques are needed. Radio emission from UHECRs, on the other hand, is unaffected by attenuation, has a high duty cycle, gives calorimetric measurements and provides high directional accuracy. Here we report the detection of radio flashes from cosmic-ray air showers using low-cost digital radio receivers. We show that the radiation can be understood in terms of the geosynchrotron effect. Our results show that it should be possible to determine the nature and composition of UHECRs with combined radio and particle detectors, and to detect the ultrahigh-energy neutrinos expected from flavour mixing.
AbstractKASCADE (KArlsruhe Shower Core and Array DEtector) is determining flux spectra for different primary mass groups to disentangle the knee feature of the primary cosmic-ray energy spectrum. The ...energy spectra of the light element groups result in a knee-like bending and a steepening above the knee. The topology of the individual knee positions suggests a rigidity dependence. To proof the rigidity dependence the KASCADE array is now extended by a factor 10 in area. The major goal of KASCADE-Grande is the observation of the ’iron-knee’ in the cosmic-ray spectrum at around 100 PeV which is expected following the KASCADE observations. PACS: 98.70.Sa Cosmic rays
The KASCADE-grande experiment Blümer, J; Apel, W D; Arteaga, J C ...
Journal of physics. Conference series,
07/2008, Letnik:
120, Številka:
6
Journal Article
Recenzirano
Odprti dostop
KASCADE-Grande is an extensive air shower array co-located with the original KASCADE air shower experiment at Forschungszentrum Karlsruhe, Germany. The multi-detector system allows to investigate the ...energy spectrum, composition, and anisotropies of cosmic rays in the energy range extended up to 1018 eV. An overview on the performance of the apparatus and first results are presented.
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