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Correlation properties of magnetosheath fluctuations
Gutynska, Olga ; Šafránková, Jana (advisor) ; Vandas, Marek (referee) ; Souček, Jan (referee)
Title: Correlation properties of magnetosheath fluctuations Author: Olga Gutynska Department: Department of Surface and Plasma Science Supervisor: Prof. RNDr. Jana Šafránková, DrSc. e-mail address: Jana.Safrankova@mff.cuni.cz Abstract: This thesis deals with fluctuations of the magnetic field (MF) and plasma density in different magnetosheath locations. The statistical study of the correlation length of these quantities has shown that these lengths are surprisingly low for both the ion flux and MF (approx. 1 RE). However, the correlation length increases with an increasing correlation between the magnetosheath and interplanetary magnetic fields (IMF). Further, we have found that the correlation length of MF fluctuations depends on the solar wind speed, on a correlation between IMF and magnetosheath MF fluctua- tions, and on the amplitude of fluctuations. The statistical study of radial profiles of cross-correlations between MF and plasma density at the subsolar and flank regions based on Cluster and THEMIS magnetosheath observa- tions revealed better correlations toward the magnetopause. A study of the modification of the IMF direction in the magnetosheath has shown that a reliable prediction of the magnetosheath BZ sign requires |IMF BZ| > 2 nT and that this prediction is more precise during solar minimum....
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The Andokides' speech On the mysteries. Translation, commentary and introductory study
Novotný, Matěj ; Souček, Jan (advisor) ; Marek, Václav (referee)
In the end of the 5th century B.C., the Andokides' speech On the mysteries represents an interesting source of information. It focuses on the processes with impious criminals who mutilated herms and profaned Eleusinian mysteries in 415 B.C., and the revision of Athenian laws in 403 B.C. This thesis attempts to present this speech in historical context, to evaluate critically its credibility, and to point out general problems concerning the use of the corpus of the Attic orators as a source of information regarding political and legal history. Thus the centre of the thesis lies in the commentary attached to a completely new Czech translation of Andokides' speech.
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The Greek Colonies in Hispania
Gočová, Veronika ; Souček, Jan (advisor) ; Marek, Václav (referee)
The Greek colonization of the West Mediterranean and specifically Iberian Peninsula is within the scope of Greek colonization rather kind of peripheral subject. However, it is the principal subject of our work. The Greeks not by a long sight were the only merchants, settlers, visitors and discoverers of the West world at that times. They were taken over by the Phoenicians and is evident, that they were the protagonists of the Iberian Peninsula at that times. Based on the modern scientists the Phoenicians should not be seen as the only ones and charge to the account of the Greeks just the merchants's role. The new epigraphic aknowledgements and archeological research in "Contestania" are in witness of the essential presence of the Greeks in this area. The reflection of the historical sources is completed by the archeological remains. We would like to join all the new aknowledgements based on comparison of various sources that are at our disposal. Keywords Iberian Peninsula - colonization - Greeks - Contestania
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The Oligarchy of the Four Hundred in Athens in 411 B. C. E.
Nývlt, Pavel ; Souček, Jan (advisor) ; Marek, Václav (referee) ; Bednaříková, Jarmila (referee)
Before 1891, it was commonly accepted that the most important source for the rule of the Four Hundred in Athens in 411 BCE was Thucydides' description. The situation changed thanks to the publication of the Aristotelian treatise On the Athenian Constitution, whose version of events differed markedly from Thucydides' one. There followed many attempts at determining which of the two versions was most reliable, or at combining the two versions. These controversies are the focal point of this thesis, but its ambitions are not limited to them: its ambition is also to reconstruct the chronology of the rule of the Four Hundred as precisely as is possible in context of the Peloponnesian war; and to formulate the limitations that are imposed on us by the character of sources at our disposal. Continuity of the coup with earlier developments and its impact on subsequent events are dealt with more briefly.
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The Relation of Work to Zeus' World Order in Hesiod's Works and Days
Samec, Zdeněk ; Fischerová, Sylva (advisor) ; Souček, Jan (referee)
(in English) The presented thesis is dealing with the ethics of work in the world as described by ancient Greek poet Hesiod in his famous didactic epos Works and Days. In the first part of the thesis (chapters 1 and 2), it is assumed that Hesiod's ethics are anchored in a particular situation, in which he, as a Boeotian farmer, found himself due to his dispute with his brother Perses. In the next part, firstly three major myths in the Works and Days are analyzed and the importance of work is set in a wider context of Hesiod's religious and ideological beliefs (chapter 3); subsequently our analysis is supplemented by a broader reflection of work, exertion, recreation, good and evil (chapter 4). In conclusion we finally try to answer the question of the place of work in the world order as determined by Zeus' will.
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Dynamic and heat transfer analysis of a container with measuring instruments for space probes
Zolotarev, Igor ; Bula, Vítězslav ; Šnábl, Pavel ; Gabriel, Dušan ; Dobiáš, Jiří ; Masák, Jan ; Snížek, Jan ; Souček, Jan
Rocket boosters and spacecraft are subject to intense acoustic environments during launch, which induce high levels of vibration in structural elements and equipment. In addition, elastic structural interactions with propulsion systems and flight control systems can produce low-frequency, high-deflection flight instabilities. Natural vibration of the container with measuring equipment were studied by numerical and experimental methods in the laboratory of Institute termomechanics CAS. Heat transfer analysis inside the container was made by FEM with respect to the conditions during start of the rocket and work in space.\n
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Solar Wind Modification in the Earth Foreshock
Urbář, Jaroslav ; Němeček, Zdeněk (advisor) ; Souček, Jan (referee) ; Vandas, Marek (referee)
Title: Solar Wind Modification in the Earth Foreshock Author: Jaroslav Urbář Department: Department of Surface and Plasma Science Supervisor: Prof. Zdeněk Němeček, Department of Surface and Plasma Science Abstract: The thesis presents statistical studies of the solar wind deceleration and deflection in the foreshock and its potential causes. The multi-point observa- tions from the THEMIS mission in the foreshock are compared with a Wind solar wind monitor with motivation to estimate different factors influencing evolution of solar wind speed and its deflection. We have found a systematic deceleration of the solar wind mainly due to its proton component with a decreasing distance to the bow shock that is controlled by the compressibility and the level of magnetic field fluctuations in the ULF wave range associated with the flux of reflected and accelerated particles. We can conclude that the reflected particles excite waves of large amplitudes that decelerate the solar wind protons throughout the foreshock as well as in front of the Moon. Keywords: Earth foreshock; reflected protons; solar wind proton velocity recon- struction; deceleration; ULF waves 1
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Peisistratidai
Salavová, Lucie ; Souček, Jan (advisor) ; Marek, Václav (referee)
The main subject of my bachelor thesis is a treatise about Peisistratos, first tyrant of Athens, and about his family, particularly about his most famous sons Hippias and Hipparchos. This family ruled over Athens during the 6th century BC and was important for the development of this city. Their rule significantly weakened the political influence of nobility and unified all of Attica, whose political center became Athens. During their rule the city experienced economic expansion as well as religious and cultural growth. In the opening part of my bachelor thesis I will briefly describe primary sources, especially works of Herodotus, Thucydides and The Athenian constitution. Apart from this crucial writing I will describe another works in which we can find some mentions about Peisistratidai. These are for example works of Aristotle or Plutarch or dialogue Hipparchos. I will describe their literary work and present issues and positives, which they bring for research purposes. In addition, I will describe secondary sources very briefly. In the following section of the thesis I will summarise all the knowledge we have about the Peisistratidai family. I will focus both on generally accepted findings from their lives and on their political, cultural and religious activity. My endeavour will be to...
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Chest injuries in prehospital emergency care
SOUČEK, Jan
Chest injuries are one of the very common injuries that often endanger the patient's life. Therefore, it is important to quickly determine the severity of the injury, to define further procedures, such as medication, and to ensure the most careful and fastest transport to the hospital. It is therefore important that health rescuers have the best knowledge, practical skills and awareness of possible complications, which can significantly influence the course of the injury and the state of health of the patient. Aim of this bachelor´s thesis is to map knowledge of paramedics about chest injuries in Pre-hospital Emergency Medicine (PHME) and compare rescuer´s procedures in care of patients with chest injury. Research questions are following: How different is the knowledge of medical procedures for chest injuries? What is the difference in medical procedures in chest injuries? Empirical part of the thesis is based on the qualitative survey. Semi-structured interviews with opened questions were arranged with paramedics of region Vysočina and South Bohemia. Based on the results of this work, it can be said that health rescuers have good knowledge in their field. Moderate shortcomings include uncertainty in competencies, and slight deficiencies in theoretical knowledge and awareness of the possibilities of using aids in the Ambulance car. These deficiencies may be a reflection of unified equipment, the different competencies of rescuers, and the possibilities and responsibilities to further educate and improve on the topic.
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The Impiety in Classical Athens
Novotný, Matěj ; Souček, Jan (advisor) ; Bednaříková, Jarmila (referee) ; Kysučan, Lubor (referee)
Matěj Novotný - Impiety in Classical Athens Abstract The thesis discusses the definition and prosecution of impiety in democratic Athens during the Classical period, i.e. in 5th-4th centuries BCE. The question of "impiety" in the narrower sense, i.e. of what was denoted by the Greek word ἀσέβεια (literally, "the absence/negation of respect"), is set into larger context of other crimes of religious character, covered by special laws: "sacrilege" (ἱεροσυλία), digging out sacred olive-trees, offences against festivals and other delicts which were not subsumed under any more general term in the laws, pragmatically formulated as they were. The dissertation builds on the work of the researchers who show considerable scepticism towards the reliability of later sources, for example Plutarch or Diogenes Laertius - this is connected with doubts concerning processes against philosophers before Socrates. At the same time, the thesis follows the scholars who doubt the authenticity of the documents inserted in the speeches of the Attic Orators. For these reasons, a considerable part of the thesis is devoted to the rebuttal of late reports and inserted documents. A particular attention is given to the Decree of Diopeithes, which is mentioned in Plutarch's Life of Pericles and is usually interpreted as criminalising...
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