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Space systems security is an emerging discipline in cyberphysical systems security domain. The research conducted in the field has to be done using realistic assumptions and pieces of equipment that take into account multi-disciplinary character of space systems. In CritiX, we've built the Space Systems Safety and Security lab to facilitate the research on space systems and to support the education of future generation of space systems security specialists.

Introduction. Although body image distortion in anorexia nervosa (AN) has been extensively studied over the past decades, its underlying mechanisms are not yet fully understood. Neuro-imaging studies have identified functional and structural alterations in brain areas involved in visual body perception, but the time course of visual body processing in AN remains mostly unexplored. The current study used event-related brain potentials (ERPs) to investigate single processing steps along the time course, particularly the visual processing of physical body image characteristics (featural processing, P1) and the recognition of a body as such (configural processing, N1). Methods. Twenty in-patients with AN, and 20 healthy women viewed photographs of themselves, of another woman’s body and of their own and another woman’s standardized object (cup) with concurrent EEG recording. Results. Body images elicited an accentuation of the P1 component (105-160 ms), which was absent for the comparison between own-body and own-cup images in the AN group. Results regarding the N1 component suggest alterations in object processing in AN. Conclusions. Our results demonstrate that individuals with AN show reduced featural processing of their own body image, a process which, due to its position early in the visual processing stream, is unlikely to involve higher cognitive stimulus processing. This suggests a possible role of previously undetected pre-conscious mechanisms in body image disturbance.

GNSS, particularly the GPS and GLONASS satellite constellations are commonly used for accurate estimation of atmospheric parameters. The high accuracy is accomplished by sophisticated analysis methods and expensive high-end receivers and antennas along with precise products and bias corrections. The recent market introduction of low-cost dual frequency receivers that can produce raw data from multiple constellations offers an insight into the potential use of these receivers for meteorological applications. Here we demonstrate that GPS and GLONASS measurements from a low-cost dual-frequency receiver can be used to estimate the Zenith Total Delay ( ZTD) commensurate to meteorological applications.

We study how to modify the Simpson moduli spaces of 1-dimensional coherent sheaves on a projective plane in order to obtain a space of vector bundles on curves.

Background: Cannabis is the most widely used illegal drug globally, with almost 200 million users in 2019. This use is associated with many negative health consequences and social problems, such as low school performance and other drug use. Cannabis use can be articularly harmful if it starts early, if it’s excessive or if it occurs associated with other forms of problematic behaviours. A lot of health behaviours, good or bad, emerge during adolescence and remain through the life course. Changing unhealthy behaviours in adolescence would significantly impact society, such as reducing the load of disease, injuries, and economic costs. The objective of this study is to explore cannabis consumption profiles and the factors related to it during adolescence. Methods: This study is based on the 2017/2018 Health Behaviour in School-aged Children Luxembourg survey. Participated 6 880 adolescents, aged 12 to 18-year-old, that attended schools in Luxembourg that teach according to the national. Adolescents answered if they used cannabis during their lifetime and during the past month. Following, they were categorized into 4 groups: 1. never consumed cannabis in a lifetime; 2. consumed in a lifetime but not in the past month; 3. non-daily use during the past month and; 4. daily use (or almost) during the past month. To compare and characterize the groups, descriptive and bivariate analyzes were undertaken, as well as their significance level. Results: Results show that most of the adolescents (81.8%) never consumed cannabis in their lifetime; 9.4% declared a consumption during their lifetime but not the past month; 6.6% used during the past month, non-daily; and 2.2% used (almost) daily during the past month. Different profiles emerge between the groups, particularly with regard to socio-demographic characteristics and risky behaviours. In the case of social relationships and indicators of health and well-being, differences exist but are not as pronounced. Boys, older students and those who do not live with both parents are more likely to be part of groups that have used cannabis. In addition, most risk behaviours show a dose-response relationship with cannabis use. The increase in risky behaviours translates into not only a greater likelihood of using cannabis but also a greater frequency of use. Conclusion: The four different profiles evolve gradually with the frequency of cannabis consumption. This dose-effect relationship has been highlighted between cannabis consumption and the other variables present but is especially true for risk behaviours. Prevention strategies should distinguish adolescents from each of these groups, starting in early adolescence and focus on risk behaviours as a whole.