A REVIEW OF SWARMING UNMANNED AERIAL VEHICLES

This paper in if fact an overview of state of the art in mobile multi-robot systems as an initial part of our research in implementing a system based on swarm robotics concepts to be used in natural disaster search and rescue missions. The system is to be composed of a group of drones that can detect survivor mobile cell signals and exhibit some other features as well. This paper surveys the swarm robotics research landscape to provide a theoretical background to the implementation and help determine the techniques available to create the system. The Particle swarm optimization (PSO) and Glowworm swarm optimization (GSO) algorithms are briefly described and there is also insight into Bird flocking behavior and the model behind i

Combustion Synthesis of SrAl₂O₄: Eu²⁺, Dy³⁺ Phosphorescent Pigments for Glow-in-the-Dark Safety Markings

This study deals with SrAl2O4: Eu2+, Dy3+ phosphor pigments prepared by an optimized perchlorate-assisted combustion synthesis and tested for developing glow-in-the-dark safety markings. Recipes with different oxidizer/fuel ratios were designed to create an in-situ reducing-reaction atmosphere and promote Eu3+ → Eu2+ reduction, which is responsible for the specific long-lasting, green emission of the pigments. The obtained data proved the efficiency of glycine-rich mixtures (up to 200% glycine excess), which led to improved optical features, as compared to the reference stoichiometric sample. The best results in terms of emission intensity and decay time were obtained in the case of 100% glycine excess. The sample with optimum emission characteristics was successfully tested in making glow-in-the-dark coatings applied to two different substrates and using pigment concentrations between 10 and 33% weight

Combustion Synthesis of SrAl2O4: Eu2+, Dy3+ Phosphorescent Pigments for Glow-in-the-Dark Safety Markings

This study deals with SrAl2O4: Eu2+, Dy3+ phosphor pigments prepared by an optimized perchlorate-assisted combustion synthesis and tested for developing glow-in-the-dark safety markings. Recipes with different oxidizer/fuel ratios were designed to create an in-situ reducing-reaction atmosphere and promote Eu3+ → Eu2+ reduction, which is responsible for the specific long-lasting, green emission of the pigments. The obtained data proved the efficiency of glycine-rich mixtures (up to 200% glycine excess), which led to improved optical features, as compared to the reference stoichiometric sample. The best results in terms of emission intensity and decay time were obtained in the case of 100% glycine excess. The sample with optimum emission characteristics was successfully tested in making glow-in-the-dark coatings applied to two different substrates and using pigment concentrations between 10 and 33% weight

Women and constitution-making in post-communist Romania

Online publication date: March 2019The role of women in constitution-making in Central and Eastern Europe is an under-researched topic, as is the topic of women’s role in the transition of the region to democracy. Literature regarding women’s role in organizations involved in the collapse of communism such as the Solidarity Movement in Poland, or on women dissidents in Romania, does exist. However, very little attention, if any, has been given to women’s involvement in constitution-making or constitutional litigation. This inattention reflects, to a certain extent, the dearth of constitutional scholarship on the region more generally. Very little is known about women as actors in constitution-making in Central and Eastern Europe and there is no serious gender analysis of the fundamental laws adopted in the region post-1989. This chapter begins to fill this gap in the literature by setting out the contours of women’s involvement in Romania’s constitution-making process after the fall of communism. It does so by looking at five key moments in Romania’s post-1989 constitutional path and evaluating to which extent women participated as actors in the process of constitution-making or had their interests included in the debates around the Romanian Constitution. The chapter therefore provides an initial but much-needed account of the Romanian Constitution’s foundations and evolution from a gender-sensitive perspective and should be seen as part of a broader research agenda forged around a gender analysis of Romanian constitutionalism