396 research outputs found
Deformation of the mirror segments for fluorescent detector in Pierre Auger observatory by its own weight
No full textThe Pierre Auger fluorescent detectors are optical telescopes, mirror in the each of them is composes of 60 hexagonal ultrathin segments in gravitational field of the Earth are here presented
Zkušenosti s měřením reflexních vrstev u zrcadel používaných pro projekt Pierre Auger
No full textThe Pierre Auger Observatory is designed for study of the universe's high energy particles, which evolve in the high layers of the atmosphere, where an elementary particle strikes with energy above 10.sup.19./sup. eV (1.6 J!). However, there is no scientific consensus about cosmic ray origin. The Auger Observatory is projected to gather the data needed to solve that puzzle. One of the detection technique is to observe these showers by fluorescent detectors, which are able to record the cascade development where the secondary particle causes atmospheric nitrogen to fluoresce
"Dear Lord,what's the painting hanging on the wall?" Miroslav Rada's paintings in protestant church in Vinohrady, Prague and reflection of his work by members of the church
No full textFrom 1997 to 2000 Miroslav Rada prepared paintings for protestant church in Korunní street 60 in Prague. I would like to analyze those five paintings and their iconographic themes. The main goal of my research is to describe reflexion of this painting by members of the church. My research uses antopological approach - method of qualitative interview and analysis of historical materials and literature
Nová měřící metoda tvaru konkávních zrcadel na principu digitálního zpracování Hartmanova testu
No full textThe theory, optical, mechanical, and software design for a special Hartmann wavefront analyzer is presented. This method is applied for the non-contact method of concave mirrors shape measurements. The so-called Hartmann test is used with the digital image reading and the fast computer data evaluation. In this method a transparent spatial modulator is used instead of binary mask. Our institute Joint Laboratory of Optics produces segmented mirrors for the Pierre Auger observatory fluorescent detector [1]. We use this method as the qualitative measuring of this spherical mirror segments. These segments are unique because they are light and ultrathin. The production of mirrors is based on standard operations commonly used in the optical industry (cutting, drilling, milling, grinding and polishing), with the difference that they are extremely thin. This fact can cause segment shape instability in the production process
Introduction to roughness ASR measurement method with mirror roughness measurement example
No full textIn this paper attention is concentrated on one of the main factor which affects image quality of the optical elements - a surface roughness. There are presented physical background and usage of the special measuring system. Thereinafter there is presented quantitative measurement method of the microscopic surface quality with example in measuring of the PAO mirror segments scattering parameters
All Sky Camera for the CTA Atmospheric Calibration work package
No full textThe All Sky Camera (ASC) is a passive non-invasive imaging system for rapid night sky atmosphere monitoring. By design, the operation of the ASC will not affect the measurement procedure of the CTA observatory, for which we discuss its application in this report. The data collected should enable improved productivity and increased measurement time for the CTA observatory. The goal of ASC is to identify cloud position, atmosphere attenuation and time evolution of the sky condition, working within the CTA Central Calibration Facilities (CCF) group. Clouds and atmosphere monitoring may allow near-future prediction of the night-sky quality, helping scheduling. Also, in the case of partly cloudy night sky the cameras will identify the uncovered regions of the sky during the operation time, and define potential observable sources that can be measured. By doing so, a higher productivity of the CTA observatory measurements may be possible
Indigenous Lands in a Developing Region: A Historical Ethnogeography of the Pech Indians of Eastern Honduras, With Emphasis on Recent Settlement and Land Use Changes.
No full textSince before Spanish Contact, the Pech Indians have occupied a large portion of northeastern Honduras. Like other native American populations, they have suffered significant territorial reductions and cultural alterations at the hands of European colonists and modern ladino immigrants. Utilizing the methodologies of cultural geography, ethnohistory, and ethnogeography, the Pech, formerly known as the Paya, are scrutinized to illustrate the process by which indigenous peoples are reduced and incorporated into a developing national setting. Part One examines the scholarly record on the ethnohistory of the Pech and their neighbors to delimit their habitats and to document Pech incorporation into the Spanish colonial realm. Part Two describes their post-Independence settlement and land use patterns, and explains the most recent changes. The pivotal role of Padre Manuel Subirana in establishing the original Pech land grants is highlighted, and early Honduran censuses and travelers\u27 accounts by Karl Sapper and Eduard Conzemius are employed to reconstruct settlement locations. From fieldwork in 1991-2, the author identified the Pech\u27 current three-fold use and characterization of the local habitat: montana, serrania, and vega. The eastward expansion of Honduran (ladino) population and the accompanying economic activities that forged into the Pech lands of eastern Olancho during the last three decades is proposed as the mechanism that recently altered the settlement and land tenure of the Pech. National and local migration studies, mapped intensively, indicate clearly the movement of the ladino frontier eastward to overwhelm the lands of the Pech. Road improvements triggered alterations of Pech lands and their attempts to reconstruct their land tenure system. Today, of the approximately 1,900 Pech, about 90 percent occupy a much-reduced bi-nodal core region in two upland valleys in the municipios of Dulce Nombre de Culmi and San Esteban. eastern Olancho. A few Pech also live in outlier lowland aseas at Silin (near Trujillo) and at Las Marias on the Rio Platano
A comparison of Landau-Ginzburg models for odd-dimensional Quadrics
No full textIn [Rie08], the second author defined a Landau-Ginzburg model for homogeneous spaces G/P, as a regular function on an affine subvariety of the Langlands dual group. In this paper, we reformulate this LG model (X^, W_t) in the case of the odd-dimensional quadric, as a rational function on a Langlands dual projective space, in the spirit of work by R. Marsh and the second author for type A Grassmannians and by both authors for Lagrangian Grassmannians. We also compare this LG model with the one obtained independently by Gorbounov and Smirnov, and we use this comparison to deduce part of a conjecture of the second author for odd-dimensional quadrics
To Seize the Masses. Philosophy, Ideology and Propaganda by Karl Marx
No full textTitle: "To Seize the Masses". Philosophy, ideology and propaganda by Karl Marx Author: Robin Pech Department: Ústav filosofie a religionistiky Supervisor: Mgr. Petr Kouba, Ph.D. Abstract: The aim of the diploma thesis is to thematize and clarify the interdependence of philosophy, ideology and propaganda by Karl Marx. The realization of philosophy, according to Marx, is a critique of modern society. The aim of this critique, however, is not only the understanding and interpretation of social relations but, above all, their change. For these purposes, Marx has developed his philosophy of history. On this basis is explained the nature of modern society and formulated the political programme of its transformation. That is further publicly promoted to ensure adequate - mass - support for the revolution. Thus, arises remarkable combination of philosophy, political ideology and propaganda, which seems to be an integral part of Marx's thought and his literary work and therefore, also a serious problem of his interpretation. Keywords: Marx, Philosophy, Ideology, Prapagand
Na tropie szamanizmu w paleolicie – na przykładzie jaskiń Cougnac i Pech-Merle .
No full textThe author of this thesis searches for traces of shamanism in paleolithic period through identification of signs and anthropomorphic resemblances that can have a connection with different stages of trance and shamanistic visions. For this article, Pech-Merle and Cougnac cave were chosen. Chronological range in this paper covers a period when Gravettian and Magdalenian cultures functioned. In order to carry out the above assumptions, the author used the results of structuralist research- search- ing for deep meaning and symbols, neuropsychological research – influence of altered states of con- sciousness on human and role of rites in simple societies, ethnographic research- different types of shamanic vocation and visions of shamanistic cosmology as well as interpretation of paintings and engravings based on the above mentioned scientific instruments. In the conclusion, the author shows that magical and religious practices similar to shamanism could function in paleolithic hunter-gatherer societies.The author of this thesis searches for traces of shamanism in paleolithic period through identification of signs and anthropomorphic resemblances that can have a connection with different stages of trance and shamanistic visions. For this article, Pech-Merle and Cougnac cave were chosen. Chronological range in this paper covers a period when Gravettian and Magdalenian cultures functioned. In order to carry out the above assumptions, the author used the results of structuralist research- search- ing for deep meaning and symbols, neuropsychological research – influence of altered states of con- sciousness on human and role of rites in simple societies, ethnographic research- different types of shamanic vocation and visions of shamanistic cosmology as well as interpretation of paintings and engravings based on the above mentioned scientific instruments. In the conclusion, the author shows that magical and religious practices similar to shamanism could function in paleolithic hunter-gatherer societies
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