Thesis (doctoral)--Albert-Ludwigs-Universität Freiburg im Breisgau, 1891.

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Bakalauro darbas „Moteris – Sirena“ atspindi, kaip galima remiantis Gustavo Klimto tapybos darbais sukurti kolekciją. Darbe nagrinėjama G. Klimto kūryba, aiškinamasi, kaip jo tapybos darbai atsispindi įvairiose drabuţių kolekcijose. Bakalauro darbą sudaro dvi dalys: teorinis aprašas ir moteriškų drabuţių kolekcija G. Klimto kūrybos motyvais.Aptariama, kokios įtakos menas turi aprangos dizaineriams, apţvelgiama, kaip tapybos darbai tampa įkvėpimo šaltiniu,apibūdinama mitologinių sirenų samprata bei jų atspindţiai G. Klimto kūryboje,analizuojamas fatališkos moters įvaizdis istorijoje bei šiuolaikiniame gyvenime. Pateikiamos dizainerių kolekcijos, formuojančios fatališkos moters įvaizdį,pristatomos įvairių dizainerių drabuţių kolekcijos, remiantis G. Klimto kūrybos motyvais,pagrindţiama idėja, pateikiami eskizai, projektai, technologiniai mėginiai, aprašomas drabuţių kolekcijos kūrimo procesas – konstravimas, modeliavimas, siuvimas. Taip pat pateikiamos įvykdytų drabuţių modelių fotografijos ir numatomas kolekcijos pristatymas. / This bachelor work "Women - Siren" show how can based Gustav Klimt paintings create a collection in which a woman is like a work of art. Analyzed by G. Klimt works, examines how the paintings are reflected in different clothing collections.Reviews the concept of mythological sirens and their reflections in G. Klimt works,analyzes the image of the femme fatale in the history and today life. Designers' collections are presented based on a femme fatale image.The various collections of clothing based on G. Klimt art motifs are presents.There is also analysis of peculiarities of form, texture, symbols and colors in order to interpret it in the clothes collection there is a well-founded idea. Sketches, projects and technological samples are presented. The process of creation of clothes ensemble (construction, modeling, sewing) is also described. There are photos of accomplished models and the presentation is foreseen.

Avant leur lancement dans l'espace, les satellites font l'objet de tests afin d'éprouver leurs comportements à diverses sollicitations (thermiques, acoustiques, etc.). Pour les essais acoustiques, la société Intespace soumet les satellites à de forts niveaux sonores (de l'ordre de 145 dB SPL dans la chambre réverbérante) comparables à ceux existant lors du décollage du lanceur. Elle utilise pour cela des sources électropneumatiques couplées à des pavillons débouchant dans une chambre réverbérante. Ce système acoustique assure sa mission avec succès mais la société Intespace s'interroge sur ses possibilités d'amélioration. Deux prototypes de sources pneumatiques (à disque oscillant ou rotatif, à l'échelle 1 sur 5) sont développés et construits. Les prédictions théoriques avec vena contracta sont comparées aux données expérimentales issues d'un banc de mesure. Leurs différences concernant les niveaux sonores à la sortie de la source n'excèdent pas 1 dB pour des pressions d'alimentation de 1 à 3,5 bars absolus. Un prototype de pavillon de géométrie optimisée a été construit à l'échelle 1 sur 5. Les mesures montrent des performances intéressantes. Compte tenu des niveaux sonores générés par la source, une étude de la propagation dans le pavillon met en évidence des phénomènes non linéaires, qui s'avèrent peu influencés par la présence d'un écoulement moyen pour les vitesses envisagées dans l'étude. Finalement, des mesures sont réalisées sur l'ensemble du système à l'échelle 1 sur 5, afin d'en évaluer les performances. Les niveaux sonores mesurés sont comparés aux prédictions d'un modèle issu de la théorie de Sabine. Les différences n'excèdent pas plus ou moins 3 dB. / Before their launch in space, satellites are the object of tests in order to test their behaviors with diverse constraints (thermal, acoustic, etc.). In terms of acoustic qualification, the Intespace company submits the satellites to high sound levels (of the order of 145 dB SPL in the reverberating room) comparable to those existing during the take-off phase of the launcher. For this purpose, it uses electropneumatic sources coupled to horns opening into a reverberating room. This acoustic system ensures its mission successfully but Intespace is wondering about the possibilities of improving the system. Two prototypes of pneumatic sources (oscillating or rotating disk, 1 on 5 scale) are developed and constructed. Theoretical predictions taking into account the vena contracta are compared with the experimental data from an instrumented measuring bench. Their differences in the sound levels at the source outlet do not exceed 1 dB at supply pressures of 1 to 3.5 bars absolute. A horn prototype whose shapes have been optimized was built on a 1 on 5 scale. The measurements show interesting performances. Considering the sound levels generated by the source, a study of the propagation in the horn highlights nonlinear phenomena. The latter are not influenced by the presence of an average flow for the velocities envisaged in the study. Finally, measurements are realized on the whole system at 1 on 5 scale, in order to evaluate their performance. The measured sound levels are compared to the predictions of a model derived from the Sabine theory. The differences do not exceed 3 dB or less.

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In my thesis I focused on the level of public knowledge in the field of protection of general population, because I wanted to identify the current state and to find out if cancellation of teaching this subject matter affected the public´s knowledge on this issue. The subject matter education was ended up after the change of the political system in the Czech Republic and the fall of communist regimes in Central Europe, where the population in the response to changes in domestic and global politics, that eliminated a military assault of the Czech Republic, lost interest in the issue. However, people do not realize that although the danger of war is eliminated, there are other dangers of human inventions such as industrial production, transport of chemicals, or energy production and other activities, and other dangers on the part of nature, such as excessive rainfall, strong winds and other natural calamities. In the introductory section of the thesis information on history of the public warning system and the current state of warning, evacuation and protection of population is given. Data was gathered through questionnaires, where respondents had to indicate the type of a recorded sound of a siren and the subsequent response to the sound of the siren. Other questions in the questionnaire were focused on evacuation of population and improvised protection from hazardous substances. The introductory section is followed by the description of the obtained data evaluation. The hypothesis assuming that the current population has little knowledge in the field of protection of population and that a part of the population who have undergone lessons in the subject called national defence education have greater knowledge than those who did not have this education, was confirmed after evaluation of the questionnaires. Only one quarter of respondents identified the recorded sound of a siren, which is a warning value. For other questions higher values were obtained. Another part of the population, which had not undergone lessons in national defence education, reached a lower percentage of correct answers. In the final section of the thesis evaluation of individual questions is mentioned. The situation is reviewed and measures proposed to improve the level of knowledge of the Czech Republic population in the response to warning signals.

In the continuous search for Hydrocarbon and Geothermal resources in the earth, wells are drilled for various purposes. Wildcat, Appraisal, Production and Injection wells are drilled for proper field development and operation. Based on the purpose and plan for the wells, trajectory and targets are defined. During drilling, continuous monitoring of trajectory, rock and fluid characteristics are required to achieve defined objectives. Measurement while Drilling (MWD) and Logging while Drilling (MWD) systems are included as part of the Bottom Hole Assembly (BHA) to perform continuous measurement and transmission of downhole data to the surface. Measured data are converted to binary form and transferred to the surface for further processing and interpretation. Several methods of data transfer are possible albeit with various pros and cons. Currently, the most widely used method of transfer still remains the Mud Pulse Telemetry (MPT) system which makes use of the mud (drilling fluid) within the system for transmission of data. The major focus of this research was to further expand the envelope in the research towards increasing data transmission rates using the mud siren, a form of mud pulse telemetry. This research includes practical investigations which was conducted within the unique Flow Loop Laboratory at the Institute of Drilling and Fluid Mining, TU Bergakademie Freiberg. Within the research, minor adjustments were made to the flow loop facility to align with realities expected on the Rig. Effects of the changes made were evaluated and presented. The pulser section of the flow loop was also redesigned and new mud sirens manufactured to allow for the practical investigation in series and parallel. The major concept for increasing data transmission rate investigated in this research is the Multifrequency Mud Siren transmission in series and parallel. Following up with previous research, simulation of the flop loop scenario using ANSYS CFX was done to allow for numerical evaluation of the multifrequency transmission concept. Simulation runs were performed with various scenarios both in series and parallel, results evaluated and analyzed thereafter. A little mention on the amplification theory was also investigated and results shown. For the practical experiments, the pulser section was redesigned to allow investigations both into the series and parallel conditions for multifrequency transmission. Various experimental flow runs were successfully performed, observations recorded, data analyzed using MATLAB and results discussed. In closing, a conceptual design that contributes towards the possible field application of the Multifrequency transmission concept was developed. The Compact Double Multifrequency Siren concept was designed to aid easier adaptation of the Multifrequency transmission concept both in series and parallel.:Table of Contents Declaration ii Abstract iii Acknowledgements v List of Abbreviations vi List of Symbols viii Table of Contents x 1. Introduction 1 2. Literature Review and Fundamentals 5 2.1. Historical perspective 5 2.1.1. Introduction 5 2.1.2. Mud Pulse Telemetry 6 2.1.3. Telemetry drill pipe 7 2.1.4. Electromagnetic telemetry 7 2.1.5. Acoustic Telemetry 8 2.2. Mud Pulse Telemetry devices 9 2.2.1. Positive Pulser 9 2.2.2. Negative Pulser 10 2.2.3. Mud Siren 11 2.2.4. Oscillating Shear Valve 12 2.3. Modulation Techniques for Data Transmission 13 2.3.1. Baseband Transmission 13 2.3.2. Passband Transmission 15 2.4. Signal Transformation and Processing 16 2.4.1. Fourier Transformation 17 2.4.2. Short time Fourier Transformation 17 2.4.3. Continuous Wavelet Transformation 18 2.5. Summary of Previous Research Work on the Flowloop 19 3. Flowloop setup and current changes 21 3.1. Description of Flowloop 21 3.1.1. General overview of Flowloop 21 3.1.2. Pulser Prototypes 25 3.2. Improvement in Flow Loop Set-Up 28 3.2.1. Pump Change Justification 28 3.2.2. Pump replacement 35 3.2.3. Analysis of Pump Replacement 36 4. ANSYS Modelling and Simulation of the Multi Frequency Mud Siren in Series and Parallel 47 4.1. Basics of Numerical simulation with ANSYS CFX 48 4.2. Mesh Generation and Quality 51 4.3. Modelling 53 4.4. CFX-Pre Set-up and Post view 54 4.5. Flow Simulation Results in Series and Parallel 57 5. Laboratory Investigation on the Multi-Frequency Mud Siren Concept 64 5.1. Experiment Background and setup 64 5.2. Laboratory Practical Results and Analysis 68 5.2.1. Series Transmission Test 1: Single Siren vs Double Siren, Same Frequency 69 5.2.2. Series Transmission Test 2: Double Siren, Multi Frequency 72 5.2.3. Series Transmission Test 3: Double Siren, Multi Frequency Data String Transmission 75 5.2.4. Parallel Transmission Test 1: Single Siren vs Double Siren, Same Frequency 79 5.2.5. Parallel transmission test 2: Double siren, multi frequency 82 5.2.6. Parallel transmission test 3: Double siren, multi frequency Data String Transmission 84 6. Discussion on the Multi-Frequency Mud Siren Simulation and Practical Results 89 6.1. Result Discussion 89 6.2. Challenges and Sources of Errors 93 7. Outlook 100 7.1 Future Work (Compact Multifrequency Mud Siren) 100 7.2 Recommendations 106 8. Conclusion 107 9. References 111 10. List of Figures 114 11. List of Tables 120 12. Appendix 121

L’objet de la présente étude est le développement, l’application et la diffusion de la technologie associée à divers types d’alliages de cuivre, en particulier l’alliage du plomb-bronze, en Grèce ancienne, dans ses colonies, ainsi qu’en Étrurie. Le plomb-bronze est un mélange de diverses proportions d’étain, de cuivre et de plomb. Le consensus général chez les archéométallurgistes est que le plomb-bronze n’était pas communément utilisé en Grèce avant la période hellénistique; par conséquent, cet alliage a reçu très peu d’attention dans les documents d’archéologie. Cependant, les analyses métallographiques ont prouvé que les objets composés de plomb ajouté au bronze ont connu une distribution étendue. Ces analyses ont aussi permis de différencier la composition des alliages utilisés dans la fabrication de divers types de bronzes, une preuve tangible que les métallurgistes faisaient la distinction entre les propriétés du bronze d’étain et celles du plomb-bronze. La connaissance de leurs différentes caractéristiques de travail permettait aux travailleurs du bronze de choisir, dans bien des cas, l’alliage approprié pour une utilisation particulière. L’influence des pratiques métallurgiques du Proche-Orient a produit des variations tant dans les formes artistiques que dans les compositions des alliages de bronze grecs durant les périodes géométrique tardive et orientalisante. L’utilisation du plomb-bronze dans des types particuliers d’objets coulés montre une tendance à la hausse à partir de la période orientalisante, culminant dans la période hellénistique tardive, lorsque le bronze à teneur élevée en plomb est devenu un alliage commun. La présente étude analyse les données métallographiques de la catégorie des objets coulés en bronze et en plomb-bronze. Elle démontre que, bien que l’utilisation du plomb-bronze n’était pas aussi commune que celle du bronze d’étain, il s’agissait néanmoins d’un mélange important d’anciennes pratiques métallurgiques. Les ères couvertes sont comprises entre les périodes géométrique et hellénistique. / The subject of this study is the development, application and diffusion of the technology of various types of copper alloys, particularly that of leaded bronze, in ancient Greece, its colonies, and in Etruria. Leaded bronze is a mixture of tin, copper and lead in various proportions. The general consensus among archaeometallurgists is that leaded bronze was not commonly used in Greece until the Hellenistic period, and thus this alloy has not received very much attention in archaeological literature. However, metallographic analyses demonstrate that objects composed of leaded bronze had a wide distribution. The analyses also show differentiation in the composition of alloys that were used in the manufacture of various types of bronzes, a tangible indication that metalworkers distinguished between the properties of both tin bronze and leaded bronze. The knowledge of their different working characteristics is what enabled a bronzeworker to choose, in many cases, the appropriate alloy for a specific application. The influence of Near Eastern metallurgical practices produced variations in both the artistic forms as well as alloy compositions of Greek bronzes during the Late Geometric and Orientalizing periods. The use of leaded bronze for particular types of cast objects shows an increasing tendency from the Orientalizing period onwards, culminating in the late Hellenistic period when high-lead bronze became a common alloy. This study analyzes the metallographic data of specific categories of bronze and leaded bronze cast objects, and it will demonstrate that although the use of leaded bronze was not as prevalent as that of tin bronze, it was nevertheless a significant adjunct of ancient metallurgical practices. The periods surveyed range from the Geometric to the Hellenistic periods.

L’objet de la présente étude est le développement, l’application et la diffusion de la technologie associée à divers types d’alliages de cuivre, en particulier l’alliage du plomb-bronze, en Grèce ancienne, dans ses colonies, ainsi qu’en Étrurie. Le plomb-bronze est un mélange de diverses proportions d’étain, de cuivre et de plomb. Le consensus général chez les archéométallurgistes est que le plomb-bronze n’était pas communément utilisé en Grèce avant la période hellénistique; par conséquent, cet alliage a reçu très peu d’attention dans les documents d’archéologie. Cependant, les analyses métallographiques ont prouvé que les objets composés de plomb ajouté au bronze ont connu une distribution étendue. Ces analyses ont aussi permis de différencier la composition des alliages utilisés dans la fabrication de divers types de bronzes, une preuve tangible que les métallurgistes faisaient la distinction entre les propriétés du bronze d’étain et celles du plomb-bronze. La connaissance de leurs différentes caractéristiques de travail permettait aux travailleurs du bronze de choisir, dans bien des cas, l’alliage approprié pour une utilisation particulière. L’influence des pratiques métallurgiques du Proche-Orient a produit des variations tant dans les formes artistiques que dans les compositions des alliages de bronze grecs durant les périodes géométrique tardive et orientalisante. L’utilisation du plomb-bronze dans des types particuliers d’objets coulés montre une tendance à la hausse à partir de la période orientalisante, culminant dans la période hellénistique tardive, lorsque le bronze à teneur élevée en plomb est devenu un alliage commun. La présente étude analyse les données métallographiques de la catégorie des objets coulés en bronze et en plomb-bronze. Elle démontre que, bien que l’utilisation du plomb-bronze n’était pas aussi commune que celle du bronze d’étain, il s’agissait néanmoins d’un mélange important d’anciennes pratiques métallurgiques. Les ères couvertes sont comprises entre les périodes géométrique et hellénistique. / The subject of this study is the development, application and diffusion of the technology of various types of copper alloys, particularly that of leaded bronze, in ancient Greece, its colonies, and in Etruria. Leaded bronze is a mixture of tin, copper and lead in various proportions. The general consensus among archaeometallurgists is that leaded bronze was not commonly used in Greece until the Hellenistic period, and thus this alloy has not received very much attention in archaeological literature. However, metallographic analyses demonstrate that objects composed of leaded bronze had a wide distribution. The analyses also show differentiation in the composition of alloys that were used in the manufacture of various types of bronzes, a tangible indication that metalworkers distinguished between the properties of both tin bronze and leaded bronze. The knowledge of their different working characteristics is what enabled a bronzeworker to choose, in many cases, the appropriate alloy for a specific application. The influence of Near Eastern metallurgical practices produced variations in both the artistic forms as well as alloy compositions of Greek bronzes during the Late Geometric and Orientalizing periods. The use of leaded bronze for particular types of cast objects shows an increasing tendency from the Orientalizing period onwards, culminating in the late Hellenistic period when high-lead bronze became a common alloy. This study analyzes the metallographic data of specific categories of bronze and leaded bronze cast objects, and it will demonstrate that although the use of leaded bronze was not as prevalent as that of tin bronze, it was nevertheless a significant adjunct of ancient metallurgical practices. The periods surveyed range from the Geometric to the Hellenistic periods.