Optimism Experiment and Development of Space-qualified Seismometers in France

The OPTIMISM experiment will put two magnetometers and two seismometers on the Martian floor in 1995, within the framework of the Mars '94 mission. The seismometers are put within the two small surface stations. The seismometer sensitivity will be better than 10 exp -9 g at 1 Hz, 2 orders of magnitude higher than the Viking seismometer sensitivity. A priori waveform modeling for seismic signals on Mars shows that it will be sufficient to detect quakes with a seismic moment greater than 10 exp 15 Nm everywhere on Mars. Such events, according to the hypothesis of a thermoelastic cooling of the Martian lithosphere, are expected to occur at a rate close to one per week and may therefore be observed within the l-year lifetime of the experiment. Other aspects of the experiment are discussed

Development of a CFD model for propeller simulation.

The article presents a development of numerical model for a single propeller simulation and comparison of obtained results with experimental data available from a test campaign in scale 1:1. Described simulation is a steady state computation taking advantage of Multiple Reference Frame model implemented in Ansys CFX. The paper includes an analysis of rotating domain thickness influence on numerical values of thrust and power. The results indicate that this type of simulation may be sensitive to the sizing of rotating domain especially when disc solidity is low, or when the number of blades is 2, a frequent situation in all electric flight vehicles. The analysis shows that performing simulations, using one domain sizing, for a number of flight scenarios requiring analysis of a few rotational speeds can produce unintuitive results. Therefore, it is suggested to calibrate the model, preferably by experimental results

Czy politologia to „nauka interdyscyplinarna”? Kilka słów o przedmiocie poznania i tożsamości dyscypliny

The article provides a short and synthetic analysis about condition of political science in Poland. It is a voice in the debate about the subject of cognition in the discipline. The article focuses on the problem of interdisciplinarity in political science. Author argues that the lack of reflection on the subject of discipline knowledge leads to the impoverishment of its achievements

Generalized Probabilistic Description of Noninteracting Identical Particles

We investigate an operational description of identical noninteracting particles in multiports. In particular we look for physically motivated restrictions that explain their bunching probabilities. We focus on a symmetric 3-port in which a triple of superquantum particles admitted by our generalized probabilistic framework would bunch with probability 3/4. The bosonic bound of 2/3 can then be restored by imposing the additional requirement of product evolution of certain input states. These states are characterized by the fact that, much like composite systems, their entropy equals the sum of entropies of its one-particle substates. This principle is however not enough to exclude the possibility of superquantum particles in higher-order multiports.Comment: 6 pages, comments welcom

More than just "Iron Man": A Brief History of Comic Books and Graphic Novels

Comic books and graphic novels are a significant part of today’s culture. Popularity of blockbuster movies about superheroes such as "Iron Man" or "The Dark Knight" clearly indicates that stories created for the comic medium can captivate large audiences. Unfortunately, such stories are often considered to be lacking in substance and are often perceived as a very simple form of entertainment. The aim of this article is to briefly show how comic books and graphic novels developed throughout history. While observing how this form evolved, it is much easier to notice that this medium can actually be used to tackle serious subject matter and, contrary to popular belief, even superhero stories can have a significant level of [email protected] Karczewski is currently an MA student at the Faculty of Philology, University of Bialystok, Poland. His interests include storytelling in popular culture (graphic novels, video games) and translation.University of Bialystok3475

Geología y control hidroquímico del salar Aguas Calientes Sur, II Región de Antofagasta, Chile: relación con el desarrollo de sus facies evaporíticas

Tesis (Geólogo)El salar Aguas Calientes Sur se caracteriza por la poca cantidad de información respecto a su comportamiento geológico e hidrogeológico debido a que es un área protegida. Sin embargo, de acuerdo con trabajos previos y junto con el uso de metodologías de carácter remoto y nuevos datos obtenidos en terreno, el depósito salino está geológicamente caracterizado por situarse en una cuenca rodeada principalmente por material volcánico y sedimentario de edad Mioceno Superior-Holoceno, presentando una composición mineralógica mixta y cuya distribución se basa en la ocurrencia de dos facies principales, una de mayor distribución superficial y conformada por halita, yeso, nitratos, boratos y material detrítico, seguida por una segunda facies constituida por un alto enriquecimiento en sulfatos (yeso y otros), concentraciones subordinadas de carbonatos, cloruros y material detrítico de origen volcánico. Tal rasgo, así como el comportamiento hidroquímico dominantemente sódico-clorurado del depósito salino, podrían estar relacionados tanto con las variaciones climáticas dentro del sector altoandino como bien al aporte iónico de las sales evaporíticas producto de procesos continuos de disolución y precipitación.The salar of Aguas Calientes Sur is characterized by the limited amount of information regarding their geological and hydrogeological behavior because it’s a protected area. However, according to previous work and together with the use of remote methodologies and new field data, the saline deposit is geologically characterized to be in a basin surrounded of Late Miocene-Holocene volcanic and sedimentary material, presenting a mixed mineralogical composition and which it’s distribution is based in the occurrence of two main facies, one with a higher superficial distribution and conformed by halite, gypsum, nitrates, borates and detritic material, followed by a second facies constituted by a higher sulfate enrichment (gypsum and others), subordinated carbonate and chloride concentrations and detritic material with volcanic support. Such feature, as well as the dominant sodic-chloride hydrochemical behavior of the deposit, could be related both to climatic variations inside of the High-Andean sector and to the ionic contribution of the evaporitic salts product of continuous processes of dissolution and precipitation