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  • Other Sources  (92)
  • RKK, Pécs  (48)
  • Univ. Bochum  (35)
  • Univ. Freiburg (Breisgau)  (9)
  • English  (92)
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  • 2010-2014  (92)
  • 2000-2004
  • 1
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    Univ. Bochum
    Publication Date: 2020-10-07
    Description: Die Dissertation behandelt die Konzepte sowie die Implementierung der operativen Aspekte der Kontrollsoftware des LUCIFER Instruments. Diese ist in vier Schichten aufgeteilt. Die Schnittstelle zwischen Software und Hardware bildet die Control-Schicht. In der Instrument-Schicht sind alle Komponenten des Instruments als Software-Dienste abgebildet und erfüllen die jeweils für diese Komponente notwendigen Aufgaben. In der obersten Schicht sind die wesentlichen Manager-Dienste beheimatet. Durch Beobachtungsskripte ist eine automatische Steuerung von Instrument und Teleskop möglich. Weiterhin wurden die stellaren Populationen im Zentrum von vier Galaxien untersucht. Ein Vergleich mit publizierten Werten für ähnliche Galaxien zeigt keinen signifikanten Trend zu jüngeren Populationen in den Galaxien, die einen Pseudo-Bulge zeigen. Eine Galaxie zeigt deutliche Hinweise auf eine sehr alte stellare Population im Buge, deutlich älter als die Populationen von elliptischen Galaxien.
    Description: thesis
    Keywords: 520 ; TCM 000 ; TIE 400 ; Mathematische und EDV-Verfahren {Astronomie} ; Spektren und Leuchtkraft von Sternsystemen {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 142 S.
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  • 2
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    Univ. Freiburg (Breisgau)
    Publication Date: 2021-03-29
    Description: Observations of the solar corona show loop-like structures formed by plasma at temperatures of one million degrees and higher. Since the solar surface is much cooler than the corona, a heating mechanism must be responsible for the high temperatures. The dissipation of magnetic fields in the corona could provide such a heating mechanism. However, the process of transforming magnetic energy into thermal energy is still not yet understood in detail. To investigate this process and its impact on the heating of the corona, we employ a three-dimensional magneto-hydrodynamical model. This numerical model synthesizes the temporal evolution of the magnetic field above an Active Region. It includes the solar atmosphere from the photosphere up to the corona. The magnetic field in the corona is braided by foot point motions in the photosphere. This is done imilarly to the braiding through granulation in reality. The stressed agnetic field induces currents which are then dissipated in the corona. This dea is known as the DC model (direct current) and was proposed by Parker in 1972. The model reaches a quasi-stationary state, i.e. the energy input by hotospheric motions is counterbalanced by radiative losses in the optically thin corona. As a result, the described heating process creates and sustains a hot corona with a temperature of one million degrees and higher ...
    Description: thesis
    Keywords: 523 ; TGC 765 ; TGC 800 ; Korona {Astronomie: Sonne} ; Magnetfelder {Astronomie: Sonne}
    Language: English
    Type: monograph , publishedVersion
    Format: 108 S.
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  • 3
    Publication Date: 2021-03-29
    Description: The CERN Axion Solar Telescope (CAST) is searching for solar axions, which could be produced in the core of the Sun via the so-called Primakoff effect. For this purpose, CAST uses a decommissioned LHC prototype magnet. In its magnetic field of 9 Tesla axions could be reconverted into X-ray photons. The magnet is mounted on a structure built to follow the Sun during sunrise and sunset for a total of about 3 hours per day. The analysis of the data acquired during the first phase of the experiment with vacuum in the magnetic field region yielded the best experimental upper limit on the axion-to-photon coupling constant for axion masses up to about 0.02 eV. In order to extend the sensitivity of the experiment to a wider mass range, the CAST experiment continued its search for axions with helium in the magnet bores. In this way it is possible to restore coherence for larger masses. Changing the pressure of the helium gas enables the experiment to scan different axion masses. In the first part of this second phase of CAST, helium-4 has been used and the axion mass region was extended up to 0.4 eV ...
    Description: thesis
    Keywords: 523 ; TII 100 ; TCE 380 ; Dunkle Materie {Astronomie: Interstellare Materie} ; CCD, Photodetektoren {Astronomische Instrumente}
    Language: English
    Type: monograph , publishedVersion
    Format: 266 S.
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  • 4
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    Univ. Bochum
    Publication Date: 2021-03-29
    Description: thesis
    Keywords: 523 ; TEG 000 ; THT 800 ; Kosmogonie {Astronomie} ; Massenreiche Sterne {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 131 S.
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  • 5
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    Univ. Freiburg (Breisgau)
    Publication Date: 2021-03-29
    Description: The solar surface outside sunspots and active regions, i.e., the quiet Sun, shows the ubiquitous pattern of granulation in the photosphere. The quiet solar photosphere harbors small-scale magnetic structures inside and between granules. This thesis presents thermodynamic properties of the small-scale magnetic flux concentrations in the quiet Sun using high spatial and temporal resolution observations along with numerical simulations. Spectral line profiles of the Fe I 630 nm pair and Ca II H were used to trace the photospheric and chromospheric layers of the magnetic elements. In the presence of magnetic field spectral lines split and are polarized via the Zeeman effect. The difference of a spectral line profile, measured in left and right circular polarized light, is a Stokes-V profile with two lobes. In the absence of any gradients of velocity or magnetic field along the line of sight, Stokes-V profiles are anti-symmetric. The different area of the two lobes, the Stokes-V area asymmetry, provides information about the gradients of the magnetic and velocity fields along the line of sight. Comparing high resolution spectropolarimetric data with synthetic maps of a 3D MHD simulation, we found several magnetic elements in the photosphere showing a central region of negative Stokes-V area asymmetry surrounded by a peripheral region with larger positive asymmetry ...
    Description: thesis
    Keywords: 523 ; TGC 745 ; TGC 755 ; TGC 800 ; Photosphäre {Astronomie: Sonne} ; Chromosphäre {Astronomie: Sonne} ; Magnetfelder {Astronomie: Sonne}
    Language: English
    Type: monograph , publishedVersion
    Format: 146 S.
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  • 6
    Publication Date: 2021-03-29
    Description: We investigate the double-peak profile of the emission of powerful cosmic non-thermal radiation sources with dominant magnetic field self-generation like TeV blazars. Therefore, we assume a flare to occur in the emission knot due to the uniform instantaneous injection of monoenergetic ultra-relativistic electrons via a relativistic pick-up process. The electrons are subjected to a linear or nonlinear synchrotron radiation cooling and the synchrotron photons are multiple Thomson scattered off their generating electrons (SSC process). We work out the differences between single and multiple instantaneous injections of monoenergetic relativistic electrons. This is of great interest, because it is very likely that injections into the plasmoids occur repeatedly, so that this would explain the short-time energy variability of blazars. We also compute for the first time the nonlinear SSC radiation quantities using a Thomson limit approximation and the full Klein-Nishina cross section.
    Description: thesis
    Keywords: 523 ; TIE 900 ; Sonstige Sternensysteme {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 84 S.
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  • 7
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    Univ. Bochum
    Publication Date: 2021-03-29
    Description: This work deals with the search for substructures in four nearby galaxies (NGC 300, NGC 7793, M 33, M 83) in which it is possible to resolve single stars in their outer parts.The search is based on the photometry of wide field imaging data. This photometry is further analysed by the use of classical methods (colour-magnitude-diagrams, star counts) and by the use of data-mining tools (fuzzy c-means clustering). Finally, it could be shown that three out of four galaxies show signs of substructure. In NGC 300 the analysis of the red-giant-branch stars revealed a truncation in the outer parts, while in NGC 7793 hints for a tidal stream or spiral arm were found. In case of M 83 it was possible to recover an already known surface brightness arc first seen on old photographic plates.
    Description: thesis
    Keywords: 523 ; TIE 400 ; TIE 500 ; Spektren und Leuchtkraft von Sternsystemen {Astronomie} ; Aufbau und Struktur von Sternsystemen {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 151 S.
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  • 8
    Publication Date: 2021-03-29
    Description: Die vorliegende Dissertation untersucht, ob heiße und expandierende Gasstrukturen gravitativ an ihre Galaxie gebunden sind (Ausfluss) oder ob sie das Gravitationspotential der Galaxie verlassen können (galaktischer Wind). Galaktische Winde, d.h. Massenverlust für die Galaxie und Anreicherung des intergalaktischen Mediums haben direkte Auswirkungen auf die Entwicklung von Galaxien und Galaxienhaufen. Spektroskopische Untersuchungen des neutralen und ionisierten Wasserstoffs wurden in einer Auswahl von vier nahen irregulären Zwerggalaxien durchgeführt. In allen vier Galaxien wurden expandierende Gasstrukturen gefunden und ihre Expansionsgeschwindigkeiten vermessen. Aus Dunkle Materie Halo Modellen wurde das Gravitationspotential der Galaxien abgeschätzt. Dadurch konnte gezeigt werden, dass das Gas in allen Fällen gravitativ gebunden bleibt. Dieses Ergebnis ist in Übereinstimmung mit hydrodynamischen Simulationen und legt nahe, dass galaktische Winde in masseärmeren Galaxien zu finden sind.
    Description: thesis
    Keywords: 523 ; TII 500 ; Emissionsnebel {Astronomie: Interstellare Materie}
    Language: English
    Type: monograph , publishedVersion
    Format: 136 S.
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  • 9
    Publication Date: 2021-03-29
    Description: Beim Ras-RasGAP-Komplex ist die Hydrolyse des Guanosintriphosphats stark beschleunigt im Vergleich zu Ras allein. Dies wird hauptsächlich durch den Argininfinger R789 verursacht, der direkt zur Triphosphatgruppe zeigt. QM/MM-Simulationen wurden durchgeführt, bei denen das Triphosphat quantenmechanisch mithilfe der DFT behandelt wurde, während der Proteinkomplex und die Wasserumgebung klassisch beschrieben wurden. Im Vergleich zu Ras sind beim Ras-RasGAP-Komplex die entscheidende Elektronenverschiebung, die Bindungsverlängerung und die Verdrillung hin zu einer ekliptischen gamma-beta-Orientierung wesentlich stärker ausgeprägt. Der Argininfinger interagiert durch Verdrängung von Wassermolekülen aus der Bindenische. Das resultierende verstärkte elektrische Feld katalysiert den Bindungsbruch. Eine hypothetische Protonierung des beta-Phosphats führt zum Bindungsbruch. Nach Abschluss der Hydrolyse sind die Schwingungen des Mono- und Diphosphats über Dipol-Dipol-Wechselwirkung gekoppelt.
    Description: thesis
    Keywords: 523 ; TIE 400 ; Spektren und Leuchtkraft von Sternsystemen {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 149 S.
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  • 10
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    Univ. Bochum
    Publication Date: 2021-03-29
    Description: Diese Dissertation untersucht, ob die Dynamik von Galaxien in Einklang mit den Ergebnissen aus CDM (cold dark matter) Simulationen ist. Im Wesentlichen wurden 19 Galaxien hinsichtlich Abweichungen von kreisförmigen Bewegungen analysiert. Diese nicht-kreisförmigen Bewegungen werden von den Simulationen vorhergesagt, um das lang bestehende cusp/core Problem zu erklären. Es konnte jedoch gezeigt werden, dass die Abweichungen von den kreisförmigen Bewegungen zu klein sind, um die Ergebnisse von CDM Simulationen mit den Beobachtungen in Einklang zu bringen. Große nicht-kreisförmige Bewegungen finden sich vor allem in den Zentren von massereichen Galaxien und Balkengalaxien. Dies lässt jedoch vermuten, dass diese Bewegungen durch baryonische Materie hervorgerufen werden und nicht durch den DM Halo. Die vorliegende Dissertation unterstreicht die Notwendigkeit, die CDM Simulationen zu verändern, bzw. alternative Lösungen zu CDM Modellen zu suchen.
    Description: thesis
    Keywords: 523 ; TII 100 ; Dunkle Materie {Astronomie: Interstellare Materie}
    Language: English
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  • 11
    Publication Date: 2021-03-29
    Description: We have investigated the implications of isotropically distributed interstellar magnetohydrodynamic plasma waves on the scattering mean free path and the spatial anisotropy of high-energy cosmic rays. We demonstrate a drastic modification of the energy dependence of both cosmic ray transport parameters compared to previous calculations that have assumed that the plasma waves propagate only parallel or antiparallel to the ordered magnetic field (slab turbulence).
    Description: thesis
    Keywords: 539.7223 ; 523 ; 550 ; TFE 000 ; TFG 000 ; Kosmische Elektrodynamik {Astrophysik} ; Magnetohydrodynamik und Plasma-Astrophysik
    Language: English
    Type: monograph , publishedVersion
    Format: 91 S.
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  • 12
    Publication Date: 2021-03-29
    Description: Observations of the sun are almost always impaired by the turbulent motion of air in Earth's atmosphere. The turbulence would limit the theoretical resolution of modern large telescopes to that of amateur telescopes without additional tools.Today however, high-resolution data of the Sun are necessary to invesitgate its small-scale structure. This structure is likely to be connected to the radially outward increasing temparature distribution of the solar atmosphere. An introduction into further details of this topic that has also been the motivation for this work is presented in Chapt. 1. A theory of atmospheric turbulence that builds the basis for several results of this work is described in Chapt. 2. Here, two modern tools to enhance the resolution of groundbased observations are reviewed, on the one hand adaptive optics (AO) systems and on the other hand speckle interferometry. Until recently, these two techniques were only used separately. In Chapt. 3 the necessary modifications for analytical models of transfer functions are developed that include the changes made by an AO system to the incoming wave front, thus making a combination of AO systems and speckle interferometry possible ...
    Description: thesis
    Keywords: 523 ; TGC 100 ; TGC 740 ; Sonnenbeobachtung {Astronomie} ; Sonnenatmosphäre
    Language: English
    Type: monograph , publishedVersion
    Format: 137 S.
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  • 13
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    Univ. Bochum
    Publication Date: 2021-03-29
    Description: In this work we introduced basic turbulence theory into the framework of the interstellar medium. In many cases turbulence simulations are applied to the interstellar medium (ISM) merely because it is a medium, where extremely high Reynolds numbers are actually realised, and the parameters of the ISM are only taken into account as far as they are needed for the turbulence research. Here, however, we investigated the basic turbulence properties, while at the same time we modelled the properties of the ISM as thoroughly as possible. The important point is that there are many physical processes going on in the ISM, which should be incorporated in the corresponding simulations. These processes reachfrom external influences of the radiation field originating from hot stars to the internal interaction of the particles culminating in the intricate chemistry of the molecular cloud medium. Each of the different phases of the ISM has its own dominant processes to be taken into account for a realistic modelling...
    Description: thesis
    Keywords: 523 ; TII 000 ; Interstellare Materie {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 141 S.
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  • 14
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    Univ. Bochum
    Publication Date: 2021-03-29
    Description: This thesis presents an imaging and spectroscopic study of the narrow-line region (NLR) in active galactic nuclei (AGNs). We find a correlation between size and luminosity of the NLR with different slopes for type-1 and type-2 AGNs which can be explained by the observers viewing angle and a receding torus. The radial properties of the NLR gas, such as reddening, electron density, ionization parameter, and velocity field are analyzed. We derive pure emission-line spectra and use the resulting absorption-line free ratios for spatially resolved spectral diagnostics. We find a transition between the AGN-excited NLR and the surrounding star-forming regions, allowing us to determine the NLR size independent of stellar contamination. The electron density and ionization parameter decrease with radius indicating that the NLR is photoionized by the central source only.The velocity fields suggest a disky NLR gas distribution with the torus axis lying in the galaxy disk.
    Description: thesis
    Keywords: 523 ; TIE 400 ; Spektren und Leuchtkraft von Sternsystemen {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 222 S.
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  • 15
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    Univ. Freiburg (Breisgau)
    Publication Date: 2021-03-29
    Description: Photospheric bright points are proxies for small-scale magnetic flux concentrations.These magnetic elements are thought to be the building blocks of the solar magnetic field and are important to understand many physical processes on the Sun, e.g. the variability of the solar irradiance.Because of their small size (100-200 km in diameter) the observations of photospheric bright points put special requirements on the seeing conditions, instrumental setup and post-processing techniques ...
    Description: thesis
    Keywords: 523 ; TGC 800 ; TGC 745 ; Magnetfelder {Astronomie: Sonne} ; Photosphäre {Astronomie: Sonne}
    Language: English
    Type: monograph , publishedVersion
    Format: 105 S.
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  • 16
    Publication Date: 2021-03-29
    Description: In der vorliegenden Dissertation wird die vertikale Struktur von edge-on Scheibengalaxien mit einer 'box or peanut shaped' (B/PS) Struktur in der Bulgeregion unter Verwendung von nahinfrarot Beobachtungen untersucht. Durch Nutzung von Konturhervorhebungsverfahren und Flaechenhelligkeitsprofilen entlang der Hauptachse der Galaxie kann gezeigt werden, dass Material aus der Scheibe in vertikaler Richtung umverteilt wird, und zur Entstehung der B/PS Struktur fuehrt. Dies ist in Einklang mit dem auf der vertikalen Ausdehnung eines in der Galaxie vorhandenen stellaren Balkens sich stuetzenden sekulaeren Evolutionsmodell. Die Analyse der vertikalen Flaechenhelligkeitsverteilung zeigt eine Variation der Skalenhoehe entlang der radialen Ausdehnung der stellaren Scheibe. Diese Variation wird hier zum ersten Mal deutlich beobachtet, wobei an der Position der B/PS Struktur ein lokales Maximum der Skalenhoehe festzustellen ist, im Einklang mit dem sekulaeren Evolutionsmodell.
    Description: thesis
    Keywords: 523 ; TBG 000 ; TIE 400 ; TIE 500 ; Infrarot-Astronomie ; Spektren und Leuchtkraft von Sternsystemen {Astronomie} ; Aufbau und Struktur von Sternsystemen {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 178 S.
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  • 17
    Publication Date: 2021-03-29
    Description: In the present work analytical solutions of the transport equation for hadronic cosmic rays are calculated. With these, it is possible for the first time to fit the energy spectra of the cosmic protons measured at the position of the earth. A focus lies on the investigation of the spatial diffusion of the galactic cosmic ray nuclei and their stochastic reacceleration by plasma waves superimposed on the interstellar medium. A realistic spatial distribution of supernova remnants as primary sources of the galactic cosmic rays and, as an additional process, the solar modulation are taken into account. Different fit parameters are obtained. Additionally, analytical approximations of the momentum solution for a power law injection spectrum for small and large momenta are calculated for the case without and for the case with spallation losses.
    Description: thesis
    Keywords: 523 ; TFE 000 ; Kosmische Elektrodynamik {Astrophysik}
    Language: English
    Type: monograph , publishedVersion
    Format: 192 S.
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  • 18
    Publication Date: 2021-03-29
    Description: Triaxial compression experiments were performed on the synthesized samples and Fe-bearing clinopyroxenite in a solid medium apparatus at a confining pressure of 0.75 to 2.5 GPa, temperatures 900 to 1175oC, and strain rates between 1.1x10-6 s-1 to 8.5x 10-5 s-1. Samples of calcic compositions deformed at high differential stresses reveal abundant mechanical (100)[001] twins, whereas jadeite aggregates deformed at low differential stress show well developed subgrain boundaries. Combining the mechanical data and observed microstructures for deformed synthetic samples reveal that the deformation of diopside aggregates is controlled by dislocation glide, while the kinetics of dislocation climb controls the deformation of jadeite aggregates. The variation in strength with composition obeys scaling by the dependence of melting temperature and shear modulus on composition. In contrast to climb-controlled deformation, glide-controlled deformation should be insensitive to impurity concentrations.
    Description: thesis
    Keywords: 549 ; TQL 000 ; VAE 140 ; VGF 300 ; Sonstige Verfahren {Geophysik} ; Gesteinsdeformation {Strukturgeologie} ; Experimentelle Mineralogie
    Language: English
    Type: monograph , publishedVersion
    Format: 99 S.
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  • 19
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    Univ. Bochum
    Publication Date: 2021-03-29
    Description: Löslichkeitsdaten gesteinsbildender Minerale unter hohen Drücken sind für unser Verständnis von Fluideigenschaften und Massentransport von Mineralen in der Erdkruste und oberen Mantel von großer Wichtigkeit. In dieser Arbeit wurden neue in situ Masseverlust Methoden entwickelt um Löslichkeiten zu bestimmen, die dann in einer hydrothermalen Diamant Stempel Zelle getestet wurden. In der ersten Methode wird die Tendenz von Kristallen ausgenutzt während eines Experiments eine idiomorphe Form anzunehmen. Die zweite Methode basiert auf Messung und Analyse der Doppelbrechung eines Kristalls um dessen Dicke zu bestimmen. Masseverluste von wenigen æg können so bestimmt werden. Beide Methoden sind bis in den ppm Bereich anwendbar. Die Ergebnisse dieser Arbeit tragen sowohl zu unserem technischen Verständnis von Hockdruck/Hochtemperatur Equipment bei als auch zu unserem allgemeinen Verständnis der chemischen Eigenschaften von Fluiden in Hochdruck Umgebungen wie z.B. in Subduktionszonen.
    Description: thesis
    Keywords: 549 ; TQL 000 ; VGF 300 ; VAE 140 ; Sonstige Verfahren {Geophysik} ; Experimentelle Mineralogie ; Gesteinsdeformation {Strukturgeologie}
    Language: English
    Type: monograph , publishedVersion
    Format: 232 S.
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  • 20
    Publication Date: 2021-03-29
    Description: Die physikalischen und mechanischen Eigenschaften von tonartigen Materialien, die für die Skalierung von Analogexperimenten relevant sind, werden mit Hilfe von Konzepten der modernen Bodenmechanik analysiert. Ein Verfahren zur Bestimmung dieser Eigenschaften wird vorgestellt. Skalierte Tonexperimente mit Riedelschem Mechanismus wurden durchgeführt. Sie erzeugen typische Pull-apart Strukturen entlang Riedel Frakturen sowie Push-up Strukturen in dazwischen liegenden Flachen. Die Scherfestigkeit und die Dicke des Tonkuchens beeinflussen sowohl die Geometrie der Scherzonen als die benötigte Hauptverschiebungsgröße für die Entstehung der Riedel Scherfrakturen an der Oberflache des Tonkuchens. Pull-apart Becken, die durch Riedelschen Mechanismus erzeugt wurden, lassen sich auf der Insel Gozo (Strait of Sicily rift zone) beobachten. Die gleichzeitige Entwicklung der Push-up Horste ist im komplexen Blattverschiebungsbecken des Meers von Marmara zu finden.
    Description: thesis
    Keywords: 551.8 ; VAE 130 ; VAE 400 ; Geomechanik ; Tektogenese {Geologie}
    Language: English
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  • 21
    Publication Date: 2021-03-29
    Description: Diese Arbeit beschäftigt sich mit der Verknüpfung von manuellen und automatischen Inversionmethoden für die Interpretation gravimetrischer Anomalien. Eine neue Software mit dem Namen 3GRAINS wird vorgestellt. Sie wurde für das manuelle Modellieren entwickelt und benutzt rechteckförmige Prismen zur Berechnung des gravimetrischen Effekts eines Modells. Die Software bietet eine graphische Benutzeroberfläche, um eine komfortable Arbeit mit einer modellierten Struktur zu ermöglichen. Ein automatischer Inversionsalgorithmus basiert auf der Idee der evolutionären Berechnung. Die dargestellten Methoden werden auf die Interpretation der gravimetrischen Anomalien der Hellenischen Subduktionszone angewendet. Die tektonische Situation dieser Region und seismische Beobachtungen werden vorgestellt. Der Prozess der Datengewinnung und der Datenbearbeitung wird beschrieben. Schließlich werden die Ergebnisse der Interpretation der gravimetrischen Anomalien präsentiert.
    Description: thesis
    Keywords: 551 ; 622.15 ; 550 ; TOF 000 ; TQA 000 ; TSF 300 ; VAE 880 ; VEF 300 ; Schwerkraft {Geophysik} ; Gravimetrische Verfahren {Geophysik} ; Griechenland und griechische Inseln {Geophysik} ; Passive und aktive Kontinentalränder {Geologie} ; Griechenland und griechische Inseln {Geologie}
    Language: English
    Type: monograph , publishedVersion
    Format: 139 S.
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  • 22
    Publication Date: 2021-03-29
    Description: In dieser Studie wird das Potential von Indentationsexperimenten bei erhöhten Temperaturen in der Gesteinsmechanik erkundet. Mikrohärtemessungen mit einem pyramidenförmigen Indenter werden an Olivin- und Klinopyroxen-Körnern innerhalb eines Gesteinsaggregates durchgeführt. Die Abhängigkeit der Härte der Olivin-Kristalle von der Kristallorientierung wird untersucht und die Orientierung von Gleitstufen auf der Probenoberfläche verwendet, um die während der Indentationsexperimente aktivierten Gleitsysteme zu ermitteln. Mikrohärtemessungen an Jadeit und Diopsid dienen dazu, die relative Festigkeit dieser Mitglieder einer Mischkristallreihe zu analysieren. Indentationskriechexperimente mit einem zylindrischen Indenter werden verwendet, um das rheologische Verhalten einer Legierung zu untersuchen, die als Modelmaterial für ein silikatisches Gesteinsaggregat dient. Die Ergebnisse dieser Tests an der TiAl-Legierung werden mit denen einachsiger Kriechversuche am gleichen Material verglichen.
    Description: thesis
    Keywords: 551.1 ; 550 ; VAE 140 ; VAE 120 ; VBB 000 ; VAE 140 ; VAE 120 ; VBB 000 ; Gesteinsdeformation {Strukturgeologie} ; Methodik {Strukturgeologie} ; Experimentelle Geologie
    Language: English
    Type: monograph , publishedVersion
    Format: 78 S.
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  • 23
    Publication Date: 2021-03-29
    Description: Die Isla Margarita (Venezuela) am Südrand der Karibischen Platte besteht aus einem heterogenen Krustenkomplex aus Peridotiten, Metamorphiten, diversen Magmatiten und sedimentärem Deckgebirge. Die jüngsten Magmatite sind Lamprophyrgänge und Gabbros basaltisch-andesitischer Zusammensetzung, deren hoher Anteil an kompatiblen Elementen und intermediärer Zusammensetzung auf starke Fraktionierung bei relativ hohen partiellen Aufschmelzgraden deutet. Variable Anreicherung an leichten Seltenen Erden und LILE sowie erhöhte Strontium- und Blei-Isotopenverhältnisse lassen auf eine zusätzliche Subduktionskomponente schließen. Die Entstehung der Magmen und die zeitliche Einordnung der Platznahme sind wichtige Anhaltspunkte für die Aufschlüsselung der tektonischen Entwicklung des Südrandes der Karibischen Platte und erlauben eine Korrelation mit plattentektonischen Modellen.
    Description: thesis
    Keywords: 552.1 ; 551.701 ; 550 ; VBN 500 ; VKB 130 ; VEW 200 ; Geochronologie einzelner Regionen im allgemeinen ; Petrologie der Ganggesteine ; Karibischer Raum {Geologie}
    Language: English
    Type: monograph , publishedVersion
    Format: 233 S.
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  • 24
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 43 S.
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  • 25
    Publication Date: 2021-03-29
    Description: The emphasis between theoretical, global and regional geography, proportion from research to publication has changed several times during the history of Hungarian geography. Certain scholars of Hungarian geography (geo-philosophers, and some theorists) were explicitly attached to theoretical issues of geographic science, yet the majority of geographers advantaged the concrete territorial descriptions and analysis. The regional approach appeared in the Hungarian geography much earlier than the demand on clarification of the theoretic issues of landscape. The first attempt to divide the country into macro landscapes was carried out in the first half of the 1500's. From this time on the geographic science formulated a demand to analyse the internal structure of the country within the frameworks of public administration or in the framework of some other way delimited geographic macro-regions. The administrative space enjoyed for centuries a favoured role, yet the demand for analyses based on the macro regional delimitation was always represented too. On general level the issues of landscape have already been present in Hungarian geographic science (the formulation of concepts, categories, border marking theories etc.), but Hungarian geographic science concerning the territorial research of Hungary has achieved the greatest results mostly in the fields of analytical landscape research, and evaluation ...
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 51 S.
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  • 26
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 102 S.
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  • 27
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 126 S.
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  • 28
    Publication Date: 2021-03-29
    Description: The paper is concerned with the development stages and the spatial transformation of the Hungarian banking system in the economic transition & post-transition periods. It gives an overview of the development tendencies of the financial re-integration into the global market and particularly concentrates on the spatial polarisation factors (concentration de-concentration; centralisation decentralisation) which affect banking. The paper explores the arguments behind the extremely high centralisation of headquarter functions in Budapest and the factors that have impact on the establishment of locally-regionally based banks. This is followed by an introduction of the different organisational (institutional) and territorial (location strategies) level of the Hungarian banking system, dealing with either the domestic or the international financial central-function of Budapest and the reorganisation of the bank network and with its social consequences (financial exclusion) in the regions. The paper argues that EU membership is not a dramatic event in the integration process of the Hungarian banking sector, partly due to its particular ownership structure, the integration of the banking sector has already taken place. The paper concludes that the EMU integration could have been affected more adversely the Hungarian regions already characterised by the endogenous disparities, which are to a large extent rooted in the deficiency of their financial base.
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 68 S.
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  • 29
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 46 S.
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  • 30
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 130 ; Angewandte Geographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 40 S.
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  • 31
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 194 ; Budapest {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 54 S.
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  • 32
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 33 S.
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  • 33
    Publication Date: 2021-03-29
    Description: Paläoseismologische Daten lassen vermuten, dass viele aktive Störungen in unterschiedlichen tektonischen Settings eine Veränderung in der Bewegungsrate auf der Störung kurz nach dem Ende des letzten glazialen Maximums erfahren haben. Als Beispiel seien die postglazial entstandenen oder reaktivierten Pärve Überschiebung oder die Stuoragurra Überschiebung in Nord Skandinavien (Lappland Fault Province), aber auch die über Millionen Jahre aktive Wasatch Abschiebung in der Basin and Range Province oder die Tote Mehr Transform Störung genannt. In dieser Arbeit werden dreidimensionale Finite Elemente Modelle benutzt um den Einfluss von Lastwechseln auf der Erdoberfläche auf das Verhalten einzelner Störungen zu untersuchen. Die Resultate dieser Arbeit zeigen, dass klimabedingte Volumenänderungen von Gletschern und Seen auf der Erdoberfläche das Spannungsfeld der Kruste beeinflussen. Generell gilt: Lastzunahme führt zu verringerten, Entlastung zu erhöhten Bewegungsraten auf der Störung.
    Description: thesis
    Keywords: 551 ; 550 ; VAE 130 ; VAE 140 ; TOH 800 ; Paläoerdbeben {Geophysik} ; Geomechanik ; Gesteinsdeformation {Strukturgeologie}
    Language: English
    Type: monograph , publishedVersion
    Format: 94 S.
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  • 34
    Publication Date: 2021-03-29
    Description: Human activities result in climate changes with various impacts on forest ecosystems. An increase in global surface temperature, compared to pre-industrial levels, is already recorded and further elevation is expected. Extreme events, such as hot and dry periods, would increase in frequency and duration in near future. Due to the low adaptive capacity of forest ecosystems to rapid climate changes, high priority is given to the assessment of their responses. Particularly, studies on forests dominated by the drought susceptible European beech, especially when grown on limestone-derived soils with low water storage capacity, being common in Central and Southern Europe, are important. Moreover, climate models emphasize the significance of management practices for the adaptation to the expected changes, since they could contribute to the mitigation of possible adverse effects of climate change. The present study assessed the effects of different climatic conditions on the nitrogen and water status of natural beech regeneration grown in managed (thinned) and not managed (control) stands in a forest in Southern Germany. A SW-exposed site, characterized by low water availability and high temperature and radiation interception, was regarded as representative of the climate conditions expected in the future, whereas a NE-exposed site was used as typical of present climatic conditions...
    Description: thesis
    Keywords: 551.6 ; TUG 000 ; Biometeteorologie und Bioklimatologie
    Language: English
    Type: monograph , publishedVersion
    Format: 41 S.
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  • 35
    Publication Date: 2021-03-29
    Description: Anhand des Modellfalls der Sesia Zone in den West-Alpen werden mikrostrukturelle Kriterien für syn- und postseismische Deformation in der oberen Plastosphäre in Folge eines großen Erdbebens in der überlagernden Schizosphäre ausgearbeitet. Die Orientierungsverteilung von mechanisch verzwillingten Jadeiten liefert Hinweise auf Spitzten-Spannungen 〉0,5 GPa. Die Vielfalt unterschiedlicher Quarz-Mikrostrukturen spiegelt progressive Deformation bei relaxierenden Spannungen in einem Temperaturbereich von 300-350 ʿC wider. Ein dazu konsistentes Bild liefert die kataklastische Deformation von Granat. Verheilte Mikrorisse in Quarz, verfüllte Risse in Granat sowie mesoskopische, diskordante Quarz-Gänge mit rekristallisierter Füllung geben Hinweise auf einen fluktuierenden Porenfluiddruck. Dieses Beispiel aus der Sesia Zone veranschaulicht die Bedeutung nicht-stationärer Deformation in der oberen Plastosphäre, entgegen konventionellen Vorstellungen von dominierend stationärem Fließen.
    Description: thesis
    Keywords: 551.8 ; 551.1 ; 552.4 ; 551 ; 550 ; VAE 400 ; VAE 811 ; VAE 140 ; VEB 169 ; VAE 400 ; VAE 811 ; VAE 140 ; VEB 169 ; Tektogenese {Geologie} ; Alpidische Orogene {Geologie} ; Gesteinsdeformation {Strukturgeologie} ; Französisch-italienische Westalpen {Geologie}
    Language: English
    Type: monograph , publishedVersion
    Format: 97 S.
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  • 36
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    Univ. Bochum
    Publication Date: 2021-03-29
    Description: Zur Untersuchung der Rheologie der Mischkristallreihe Jadeit-Diopsid wurden experimentelle Untersuchungen am Endglied Jadeit durchgeführt. Polykristalline Jadeit Proben wurden aus einem Glas in einer Stempel-Zylinder-Apparatur synthetisiert. Diese Proben wurden in einer modifizierten Griggs-Apparatur bei einem Umschließungsdruck von 2.5 GPa bei verschiedenen Temperaturen und Verformungsraten in axialer Richtung deformiert. Parameter für ein Fließgesetz für Versetzungskriechen wurden abgeleitet. Deformation im Regime des Versetzungskriechens konnte aus einer Analyse der Mikrogefüge abgeleitet werden. Die erzeugten Mikrostrukturen wurden mit denen von natürlichen, deformierten Omphaziten verglichen. Anwendung des Fließgesetzes erlaubt eine Abschätzung von Spannungsmagnituden in der Eklogitschicht in Subduktionszonen. Aus Experimenten an natürlichen Proben wurde die kritische Scherspannung für mechanische Zwillingsbildung in Jadeit abgeleitet.
    Description: thesis
    Keywords: 549 ; VAE 140 ; VGF 300 ; VAE 130 ; Gesteinsdeformation {Strukturgeologie} ; Experimentelle Mineralogie ; Geomechanik
    Language: English
    Type: monograph , publishedVersion
    Format: 162 S.
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  • 37
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 020 ; Kulturgeographie von Südosteuropa
    Language: English
    Type: article , publishedVersion
    Format: 58 S.
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  • 38
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QEN 520 ; Sowjetisch geprägte sozialistische Stadt {Siedlungsgeographie}
    Language: English
    Type: article , publishedVersion
    Format: 51 S.
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  • 39
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGG 420 ; Kulturgeographie der ehemaligen UDSSR
    Language: English
    Type: article , publishedVersion
    Format: 63 S.
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  • 40
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 150 ; Teilräume von Ungarn {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 68 S.
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  • 41
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 44 S.
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  • 42
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; QEI 000 ; Kulturgeographie Ungarns ; Politische Geographie, Geopolitik
    Language: English
    Type: article , publishedVersion
    Format: 90 S.
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  • 43
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 137 S.
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  • 44
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGD 425 ; Einzelne Orte von England {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 60 S.
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  • 45
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 65 S.
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  • 46
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 130 ; Angewandte Geographie Ungarns
    Language: English
    Type: article , publishedVersion
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  • 47
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 194 ; Budapest {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 75 S.
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  • 48
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 76 S.
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  • 49
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: This paper is introducing a method for analysing the differences and dynamics of the social utilisation of space. The essence of this method lies in the registration of changes in the spatial structure of settlements through analysing the spatial shifts of settlements within settlement network hierarchy with the identification of coherent spatial units. The analysis of spatial relations, i.e. microregional planning is a very useful method as it helps in mapping the interrelationship of settlements, and their major linking points, as well as in identifying their positions in the settlement hierarchy and through the analysis of the directions of gravitational force may localise their gravitational zones as well. Hereinafter, this method will be named as spatial relationship analysis. The startup phase for the workout of this method was funded by the Hungarian Scientific Research Fund's Programme titled 'The Integration Ability of Rural Spaces in Hungary's Socio-economic Process' (registration no. T 7236).
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
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  • 50
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 101 S.
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  • 51
    Publication Date: 2021-03-29
    Description: The main purposes of the academic research commissioned by the Rural Development Department of the Ministry of Agriculture and Rural Development were: to examine the interrelation between long-term unemployment and individual as well as family life strategies, the regional characteristics of the labour market and the territorial development of rural areas, as well as explore governmental and local ambitions to alleviate long-term unemployment and evaluate their efficiency. The basic issues of the research were as follows: 1) Which are the regions where the concentrations of long-term unemployment can be found and what are the reasons for it? 2) What kind of interrelation can be observed between long-term unemployment and the potential of the social and economic development of the regions? 3) What central and local attempts have there been to alleviate long-term unemployment? 4) What results did these initiatives have and what were the reasons for their success or failure? 5) What foreign models can be followed when trying to alleviate long-term unemployment? 6) Which are the economic sectors, in which employment of those long-term unemployed is the most possible? The research was carried out by the horizontal work-team of rural development of the Centre for Studies Research of the Hungarian Academy of Sciences.
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
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  • 52
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
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  • 53
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
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  • 54
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 92 S.
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  • 55
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 140 ; Teilfragen zu Ungarn {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 30 S.
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  • 56
    Publication Date: 2021-03-29
    Description: This paper examines the impact of the Hungarian banking system on regional and urban development in the early 20th century, when local banks were important territorial elements of the financial space developing close links to regional economic structures. The basic concept of the study is that there is closer connection not only between the banking sector and the economy as a whole, but between the banking sector and urban development as well. This is coincided with the argument of the American Historical Geographical school (Conzen, 1977) says that the features of the urban network are in strong correlation with the spatial structure of banking system and the diffusion of financial innovations. We considered the spatial breakdown of capital flows are one of the most important indicators of the regional and urban transformation (Gál, 2005). The Hungarian banking system looks back to a history of more than 160 years. Examining the impact of the banking system on regional and urban development is reasonable in the second half of the 19th century, since in Hungary developed an extensive financial system with a well researchable statistical database (Vargha, 1913). The Hungarian banking system was well developed in comparison to international standards by the first decade of the 20th century (Kövér, 1991; Tomka, 1996). Moreover, it became one of the most rapidly growing sectors of the domestic economy of that time ...
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 73 S.
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  • 57
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 130 ; Angewandte Geographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 55 S.
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  • 58
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 194 ; Budapest {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 73 S.
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  • 59
    Publication Date: 2021-03-29
    Description: Wechselwirkungen und insbesondere Kollisionen von Galaxien sind zwei der wichtigsten Elemente der Galaxienentwicklung. Bisher lag das Hauptaugenmerk auf der Untersuchung von Kollisionen von Spiralgalaxien (S+S). In der vorliegenden Arbeit wurden zum ersten Mal Kandidaten fuer eine Kollisionen zwischen einer Spirale und einer Elliptischen (S+E) eingehend beobachtet. Die stellare Komponente wurde mithilfe von optischen und nahinfraroten CCD Bildern sowie optischen Spektren auf ihre Verteilung und Sternenstehungsrate untersucht. Durch Interferometerbeobachtungen konnte die Verteilung und Kinematik des atomaren Gases analysiert werden, mit Fokus auf die Kollisionsgeschichte. Ausserdem wurden CO Beobachtungen durchgefuehrt, um die Masse des molekularen Gases als Rohmaterial fuer Sternentstehung zu bestimmen. Es konnte gezeigt werden, dass sich S+E Kollisionen in ihren Eigenschaften von S+S Kollisionen unterscheiden und ebenfalls einen bedeutsamen Einfluss auf die Galaxienentwicklung haben...
    Description: thesis
    Keywords: 523 ; TEG 200 ; Kosmogonie von Sternsystemen {Astronomie}
    Language: English
    Type: monograph , publishedVersion
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  • 60
    Publication Date: 2021-03-29
    Description: In der vorliegenden Dissertation wurde die Lage von Low Surface Brightness (LSB) Galaxien innerhalb der großskaligen Struktur untersucht. Dazu wurde der Sloan Digital Sky Survey herangezogen. Mit diesem Datensatz wurde die mittlere umgebende Galaxiendichte von LSBs innerhalb von Sphären mit einem Radius, der zwischen 0.8 und 8 Mpc variiert wurde, bestimmt. Zum Vergleich wurde die mittlere umgebende Galaxiendichte von High Surface Brightness (HSB) Galaxien ermittelt. Ferner wurde erstmalig das LSB-HSB Galaxy Bias berechnet. Aus diesen Studien resultiert, dass LSBs im Vergleich zu HSBs eher in Gebieten mit geringer umgebender Galaxiendichte zu finden sind. LSBs favorisieren die äußeren Bereiche der Wände und Filamente, die die großskalige Struktur des Universums bilden. Darüber hinaus wurden die Daten auf das Vorkommen von Aktiven Galaktischen Kernen (engl.: AGN) in LSBs analysiert ...
    Description: thesis
    Keywords: 523 ; TIE 300 ; TIE 900 ; TIF 000 ; Räumliche Verteilung der Sternsysteme {Astronomie} ; Sonstige Sternensysteme {Astronomie} ; Galaxienhaufen {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 157 S.
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  • 61
    Publication Date: 2021-03-29
    Description: The most prominent features on the surface of the solar disc are the sunspots, which have been studied since their detection in the 17th century. Despite this years and centuries of scientific investigations, surprisingly many facets of sunspots are not well understood. In this thesis, the properties of a sunspots' penumbra are derived from the observed spectra by means of an inversion, a forward modeling technique. A method for the construction of a 3-dimensional model of the field topology from the inversion results is presented. It offers the possibility to build a toy-model of the spot. This allows to investigate the relationships between the geometry and other properties of the sunspot like flow velocities, intensity, temperature, or field strength. The application of the procedure to time series of observations will allow to study the temporal evolution of the geometry and the other properties, to determine the physical processes happening and their respective drivers. A second part of the thesis is devoted to the analysis of isolated field concentrations in the surroundings of the sunspot. These isolated magnetic elements are assumed to be the elementary building blocks of the solar surface magnetism. In the turbulent surroundings of the solar atmosphere, only relatively strong concentrations with a field strength above 1 kG are assumed to be stable at all ...
    Description: thesis
    Keywords: 523 ; TGC 800 ; Magnetfelder {Astronomie: Sonne}
    Language: English
    Type: monograph , publishedVersion
    Format: 166 S.
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  • 62
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    Univ. Freiburg (Breisgau)
    Publication Date: 2021-03-29
    Description: Satellite observations with high spatial and temporal resolution have revealed the highly dynamic nature of the solar corona and enabled us to study physical processes in the outer atmosphere of our mother star in great detail. This thesis deals with dynamic processes in coronal loops, i.e. magnetic structures which may be thought of as the elementary building blocks of the solar corona. Using computational fluid dynamics as a tool, I calculate time-dependent models of solar coronal loops in order to address the following questions: Are dynamic processes in coronal loops, such as flows and transient brightenings, necessarily the result of a time-dependent driving mechanism? Can various observations of fast downflows be explained by a common mechanism? Which parameters determine the dynamics of coronal loops? It is found that coronal loops which are predominantly heated around their footpoints can develop a thermal instability in the upper part of the loop. This instability results in a self-amplifying catastrophic cooling process and leads to the formation of dense, cool plasma condensations. The first part of the work focuses on plasma condensations in short cool loops, which presumably constitute the solar transition region, and describes how the catastrophic cooling process leads to transient brightenings in spectral lines formed in the transition region ...
    Description: thesis
    Keywords: 523 ; TGC 765 ; TBI 000 ; Korona {Astronomie: Sonne} ; Ultraviolett-Astronomie
    Language: English
    Type: monograph , publishedVersion
    Format: 161 S.
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  • 63
    Publication Date: 2021-03-29
    Description: thesis
    Keywords: 523 ; TIE 825 ; TEG 000 ; Magellansche Wolken {Astronomie: Unregelmäßige Sternsysteme} ; Kosmogonie {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 123 S.
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  • 64
    Publication Date: 2021-03-29
    Description: In this study we present a finite-volumen scheme for solving the equations of radiation magnetohydrodynamics in two and three space dimensions. Among other applications this system is used to model the plasma in the solar convection zone and in the solar photosphere. It is a non--linear system of balance laws derived from the Euler equations of gas dynamics and the Maxwell equations; the energy transport through radiation is also included in the model. The starting point of our presentation is a standard explicit first and second order finite-volume scheme on both structured and unstructured grids. We first study the convergence of a finite-volume scheme applied to a scalar model problem for the full system of radiation magnetohydrodynamics. We then present modifications of the base scheme. These make it possible to approximate the system of magnetohydrodynamics with an arbitrary equation of state; they reduce errors due to a violation of the divergence constraint on the magnetic field, and they lead to an improved accuracy in the approximation of solution near an equilibrium state. These modifications significantly increase the robustness of the scheme and are essential for an accurate simulation of processes in the solar atmosphere ...
    Description: thesis
    Keywords: 523 ; TGC 400 ; Strahlung der Sonne {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 305 S.
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  • 65
    Publication Date: 2021-03-29
    Description: The nature of compact galaxy groups, which is important concerning the influence of the environment on member galaxies, is largely unknown. In this work dwarf galaxies are investigated in the outer regions of compact galaxy groups in order to determine the evolutionary state of the groups. This is reasonable, because dwarf galaxies are the most common galaxy type and their evolution is influenced by their environment. The results of this work show, that the investigated compact galaxy groups are not chance configurations, but physically bound systems. In all investigated groups dwarf galaxies extend far beyond the density centers of the groups. Further the extension of the groups was estimated and the calculated radii are of the order of 2 Mpc indicating sizes similar to large galaxy groups. This result suggests that compact galaxy groups are centers of larger systems.
    Description: thesis
    Keywords: 523 ; TIF 000 ; TIE 300 ; Galaxienhaufen {Astronomie} ; Räumliche Verteilung der Sternsysteme {Astronomie}
    Language: English
    Type: monograph , publishedVersion
    Format: 128 S.
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  • 66
    Publication Date: 2021-03-29
    Description: Diese experimentelle Studie untersucht Fluide in natürlichen Gesteinszusammensetzungen unter UHP-metamorphen Bedingungen. Die UHP-Fluide werden quantifiziert, ihre chemische Zusammensetzung und ihre Verteilung im Kornmaßstab beschrieben, sowie Schlüsse hinsichtlich ihrer Eigenschaften unter Versuchsbedingungen und ihrem Verhalten beim Abschrecken gezogen. Mikrogefüge und Phasenparagenesen werden in Abhängigkeit von Druck, Temperatur, Versuchszeit, Wassergehalt und Gesteinstyp charakterisiert.
    Description: thesis
    Keywords: VGF 300 ; VKB 200 ; VJC 400 ; Experimentelle Mineralogie ; Petrologie der Metamorphite ; Fluid-Gestein-Wechselwirkungen {Geochemie}
    Language: English
    Type: monograph , publishedVersion
    Format: 269 S.
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  • 67
    Publication Date: 2021-03-29
    Description: Ziel der Arbeit ist sowohl eine Lokalisierung der rezent aktiven seismogenen Zonen in diesem Gebiet sowie eine Deutung dieser Seismizität und ihrer Charakteristik im Kontext der regionalen Seismotektonik. Die seismische Kopplung des Plattenkontaktes sowie ihre raum-zeitliche Variabilität wird untersucht. Dazu werden einerseits historische und instrumentelle Kataloge der Seismizität ausgewertet und andererseits Ergebnisse eigener temporärer kurzperiodischer landgestützter wie amphibischer Netzwerke ausgewertet. Die rezente Seismizität konzentriert sich hauptsächlich im süd-östlichen off-shore Bereich entlang des intra-krustalen Grabensystems des Forearcs, wobei Schwarmaktivität auf Fluidbewegungen hinweist, sowie entlang einer 100 km breiten Zone des Plattenkontaktes zwischen der Südküste Kretas und der südlichen Grenze des Grabensystems ohne Hinweise auf einen möglichen aktuellen Spannungsaufbau. Die seismische Kopplung des Plattenkontakts ist schwach und raum-zeitlich variabel.
    Description: thesis
    Keywords: 552.4 ; VKB 291 ; VKB 210 ; VEB 167 ; TSB 169 ; TOH 400 ; Metamorphe Komplexe, Alpen {Petrologie} ; Gefüge und Mineralogie metamorpher Gesteine {Petrologie} ; Westalpen {Geologie} ; Französisch-italienische Westalpen {Geophysik} ; Übertragungsmedien {Geophysik}
    Language: English
    Type: monograph , publishedVersion
    Format: 140 S.
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  • 68
    Publication Date: 2021-03-29
    Description: Die Gefüge diskordanter Quarzgänge in der hochdruck/niedertemperaturmetamorphen Styra-Ochieinheit in süd Evia / Griechenland gewähren Einblick in kurzzeitige (auf dem geologischen Zeitmaßstab) und episodische Deformation in einem Krustenabschnitt direkt unterhalb des langzeit Spröd-Duktilüberganges. Die Gefüge zeigen sprödes Versagen gefolgt von duktiler Verformung des Gesteins bei zunächst hohen, aber abnehmenden Spannungen und Strainraten. Der finite Strain ist niedrig. Die Entstehung der Gefüge wird durch Rissausbreitung während des koseismischen Spannungsaufbaus gefolgt von duktiler Deformation des Nebengesteins begleitet von Mineralausfällung in den entstehenden Hohlraum während der postseismischen Spannungserholung erklärt. Die Zielsetzung der vorliegenden Arbeit ist es, Einblick in die Größenordnung und die Zeitskalen der Spannungs- und Porenfluiddruckänderungen während des seismischen Zyklusses zu erhalten.
    Description: thesis
    Keywords: 551.22 ; 550 ; VAE 130 ; TOH 510 ; Geomechanik ; Charakteristik seismischer Störungen {Geophysik}
    Language: English
    Type: monograph , publishedVersion
    Format: 109S.
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  • 69
    Publication Date: 2021-03-29
    Description: Untersucht werden die Wechselwirkungen zwischen Poren und Korngrenzen in Polykristallen, insbesondere das Ziehen einer Pore mit und die Separation einer Pore von einer wandernden Korngrenze. Zwei relevante Transportmechanismen werden betrachtet: Oberflächendiffusion an der Pore-Festphasen Grenze und Volumendiffusion durch eine fluidgefüllte Pore. Die Mobilität einer gezogenen Pore und die kritische Geschwindigkeit, bei der sich eine Pore von einer wandernden Korngrenze löst, werden berechnet, und der Einfluss von Poren auf die Korngrenzwanderung abgeschätzt. Kritische Geschwindigkeit und Porenmobilität werden in kompakter analytischer Form angegeben und zur Abschätzung der Beiträge der beiden Transportmechanismen verwendet. Es wird gezeigt, dass fluidgefüllte Poren dazu tendieren an Korngrenzen haften zu bleiben und über schnelle Korngrenzdiffusion aus dem System entfernt zu werden, während gasgefüllte Poren sich leichter von Korngrenzen lösen und in einem Korn eingeschlossen werden.
    Description: thesis
    Keywords: 550 ; VGD 000 ; VKA 200 ; Mineralphysik ; Gefügekunde der Gesteine
    Language: English
    Type: monograph , publishedVersion
    Format: 117 S.
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  • 70
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    Unknown
    Univ. Bochum
    Publication Date: 2021-03-29
    Description: The focus of this research is on the socio-political effects of community-based natural resource management (CBNRM) in Namibia. CBNRM transfers responsibility for and profits from wildlife to the local level. This is expected to have ecological, economic and socio-political effects. The main aim of this research was to assess the effects on local resource use governance. The institutional framework was analysed in relation to actor-specific factors. To this end an interactive visualisation tool (the power game) was developed. While CBNRM devolved power from the national to the local level, elite capture was prevalent locally. Interviewees saw the following problems: A gap between CBNRM actors and the rest of the community, an unclear and explosive role of the traditional authorities, a tense relations between NGOs and government, both following complementary goals but competing for power, high expectations that overburdened the projects
    Description: thesis
    Keywords: 910
    Language: English
    Type: monograph , publishedVersion
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  • 71
    Publication Date: 2021-03-29
    Description: Die Exhumierungsgeschichte der ultrahochdruckmetamorphen (UHPM) Gesteine am Lago di Cignana wurde rekonstruiert. Die Eklogite wurden unter UHPM Bedingungen (ca. 600 ʿC, 2,7 GPa) verformt. Bei Temperaturen (T) um 500 ʿC und Drücken (P) um 1,2 GPa fing statische Ersetzung der UHPM Minerale an. Weitere statische Ersetzungen benötigten Fluid-Infiltration entlang von Zugrissen, die als verschiedene Generationen von Quarzgängen vorliegen. Durch Korrelation der Ganggenerationen und Stadien der Ersetzung kann eine Änderung in der Orientierung des Spannungsfeldes bei T um 500 ʿC und P um 0,8 GPa abgeleitet werden. Bei P und T unter 0,6 GPa und 450 ʿC wurden die metasedimentären Gesteine durchgreifend verformt. In den Eklogiten fand die Verformung lokal statt und führte zur Bildung von Grünschiefern. Weitere Verformung war für beide Gesteinstypen lokalisiert und fand bei T um 350 ʿC statt. Für die erste Phase der Exhumierung wird das Model eines Subduktionskanals postuliert.
    Description: thesis
    Keywords: 552.4 ; 551.701 ; 550 ; VKB 291 ; VBN 500 ; VEB 169 ; VAE 300 ; Metamorphe Komplexe, Alpen {Petrologie} ; Geochronologie einzelner Regionen im allgemeinen ; Französisch-italienische Westalpen {Geologie} ; Epirogenese {{Geologie}}
    Language: English
    Type: monograph , publishedVersion
    Format: 191 S.
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  • 72
    Publication Date: 2021-03-29
    Description: Das industrielle Erbe des Ruhrgebiets ist ein Zukunftspotential dieses altindustriellen Raums. Die Industriekultur stellt daher eins der Leitthemen der Europäischen Kulturhauptstadt 2010. Industriekultur ist mehr als das bauliche Erbe des Industriezeitalters, sie ist die Entstehung der industriellen Kulturlandschaft, die Sozial- und Alltagsgeschichte der Region und ihre Mentalitätengeschichte. Zu ihrer Präsentation mangelt es an Grundlagenforschung, weshalb die Potentiale eines Teilraums untersucht wurden: Die Zechenlandschaft Hannover-Hannibal-Königsgrube im Bochum-Herner Grenzsaum weist im vierten Jahrzehnt nach Schließung dieser drei kruppschen Bergwerke aufgrund eines nur geringen Neunutzungsdrucks eine Fülle aussagefähiger Zeugnisse auf, die dokumentiert wurden. Nicht die Zechen, sondern die Entstehung der typischen Stadtlandschaft und die bergmännische Alltagskultur sind die potentiellen Präsentationsthemen dieses Raums, der sich als städtetouristisch noch nahezu ungenutzt erwies.
    Description: thesis
    Keywords: 910
    Language: English
    Type: monograph , publishedVersion
    Format: 360 S.
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  • 73
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: Our study analyses changes undergoing in the relation system of metropolitan areas2 and the issues of social and economic relations arising from the restructuring of spatial and regional disparity systems. Global-scale economic, social and political integration, the processes of global urbanisation, globalising urban networks and the transformation of their subsystems are increasing the importance of large cities and their metropolitan areas. They are squeezing out the earlier systems of spatial relations having shaped up behind nation-state boundaries in the past. All these trends are also manifested by the vigorously increasing importance of cities (Barta, 1998; Cséfalvay, 1999; Enyedi, 2001, 2003, 2006; Knox, 2002). The spatial structuring force of cities and metropolitan areas is leaving its marks on the relation system of cities and their urban areas as well. The earlier hierarchical, mono-centric and core-periphery3 based spatial disparity model of urban areas is now in transition (Ascher, 1995; Baron et al., 2005; Barta - Beluszky, 1999; Enyedi, 2003; Merlin, 2003; Mirloup, 2002; Szirmai et al. 2007). The social, economic and environmental impacts of the newly structured and urbanised regions (Enyedi, 2001, 2003) will reconfigure the system of earlier spatial disparities (Beckouche et al. 1997; Marcuse, 1989; Szirmai, 2004). Besides (and partly instead of) monocentric and hierarchical schemed relations, horizontal cooperation models based on the functional division of labour and networked organisational systems will operate as the driving engines of spatial organisation ...
    Description: report
    Keywords: 910 ; 914 ; QGF 100 ; Ungarn {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 53 S.
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  • 74
    Publication Date: 2021-03-29
    Description: Territory as we know it is in constant change; distances shorten, new synergies are established, and new challenges make mankind search for answers and ways to develop in a sustainable and environment-friendly way. New contacts with people having different experiences are important because they give the opportunity to learn from others. The European Union is a great example of what is described above. Borders are open, people can freely move within the Schengen Area, territorial harmonisation is an objective of this community in order to provide better living conditions for all citizens, strengthen the economy and equilibrate disparities among regions in each country and all European members. The present study is a result of a European programme called Leonardo da Vinci, which offers work experience for post-graduates. In this case the synergy is between Letters Faculty of Lisbon University and Centre for Regional Studies of the Hungarian Academy of Sciences (Transdanubian Research Institute). The objective of the report is to provide a comparative work on the Portuguese and Hungarian territorial planning system. It is divided into three parts: first, the explanation and comprehension of the Portuguese territorial management system, its instruments and institutions are presented, which is followed by the discussion of the same issues for the Hungarian territory we identify instruments and institutions responsible for territorial organisation in connection with planning; and finally, a comparison of the two systems is given.
    Description: report
    Keywords: 910 ; 914 ; QGF 100 ; Ungarn {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 48 S.
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  • 75
    Publication Date: 2021-03-29
    Description: With the concept generally known as Wider Europe, the European Union has mapped out an ambitious vision of regional Neighbourhood that goes beyond cooperation to involve a significant measure of integration. Furthermore, the EU sees this new quality of regional interaction and partnership as bringing enormous gains to all involved in terms of increased stability, security and well being. The EUDIMENSIONS (Local Dimensions of a Wider European Neighbourhood: Developing Political Community through Practices and Discourses of Cross-Border Co-operation) research project, financed under the European Union 6th Framework Programme, priority 7, chapter 4.2.1 (New Borders, New Visions of Neighbourhood), has sought to map and analyse crossborder cooperation and political contact-building between the European Union and neighbouring states, with a special emphasis on the development of civil society, economic interaction and the specific issue of gender in the crossborder relationship network. Crossborder cooperation in this respect has been understood as subject to changing political constellation and rhetoric, involving considerable tension between inclusion, or Neighbourhood (the European Union's efforts to integrate its wider neighbourhood in various forms of political and economic partnership) and exclusion, or Fortress Europe (the increasing securitisation of Europe's external borders in order to protect the community from unregulated flows of goods and people) ...
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; QGG 530 ; Kulturgeographie Ungarns ; Ukraine {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 65 S.
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  • 76
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 67 S.
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  • 77
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 218 S.
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  • 78
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QER 800 ; Verkehrsgeographie {Wirtschaftsgeographie}
    Language: English
    Type: article , publishedVersion
    Format: 72 S.
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  • 79
    Publication Date: 2021-03-29
    Description: The results of the representative sociological research of Hungarian cities and their centres are showing a Hungarian way in the general development tendencies of the European and East Central-European city centres. The processes of transition, the impacts of European and global economic integration have adjusted the characteristic features of Hungarian big city centres to the inner space character of European big cities. According to the results of research the central areas of Hungarian big cities following the major features of West European big cities re concentrating high social classes: people with high educational level and high professional qualifications and with high incomes. The marketable, younger and more active demographic groups also prefer settling down in the internal zones of urban space10. The presence of low social classes is higher in suburbs and in backwarded urban peripheries. However handicapped social classes are present in city centres as well and the members of high social classes have also emerged in urban peripheries. The controversial situation of European and East Central European city centres can be well illustrated by the fact that Hungarian big city centres are concentrating not only high social classes and advanced economy (with high-tech infrastructure and sophisticated institutional system and services) but the majority of physical and social problems as well. The central zones of Hungarian big cities are facing much more social problems than their suburbs and peripheries. The further we are moving away from city centres the lower severity of social problems we meet ...
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 39 S.
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  • 80
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; QGG 360 ; Kulturgeographie Ungarns ; Slowakei {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 80 S.
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  • 81
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 45 S.
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  • 82
    facet.materialart.
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 41 S.
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  • 83
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 130 ; Angewandte Geographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 47 S.
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  • 84
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGG 560 ; Europäisches Rußland {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 57 S.
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  • 85
    facet.materialart.
    Unknown
    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 150 ; Teilräume von Ungarn {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 146 S.
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  • 86
    facet.materialart.
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 120 ; Kulturgeographie Ungarns
    Language: English
    Type: article , publishedVersion
    Format: 127 S.
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  • 87
    facet.materialart.
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    RKK, Pécs
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 100 ; Ungarn {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 63 S.
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  • 88
    Publication Date: 2021-03-29
    Description: report
    Keywords: 910 ; 914 ; QGF 140 ; Teilfragen zu Ungarn {Geographie}
    Language: English
    Type: article , publishedVersion
    Format: 51 S.
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  • 89
    facet.materialart.
    Unknown
    RKK, Pécs
    Publication Date: 2021-03-29
    Description: This short discussion paper is a cross section or a thematic summary of a considerably longer work. The limited scope of the Discussion Papers series does not allow lengthy, detailed explanations or extensive references, only the presentation of mainly summarizing statements. In spite of the ensuing vulnerability, I did not refrain from the publication of my ideas in this form, hoping that they will become accessible to a wider readership in this way and the positive of negative feedback received will help me improve or further elaborate my theory. Hungary abandoned the practice of the former 'socialist' type planning in the early 1990s and even wound up the institutions related to it, but the development of a new planning system seems to take a longer time than expected. I believe that in a situation like this the best thing we can do to assist practice is to offer a sound theoretical foundation. A general theory can not only lead to a better understanding of the gist and possible forms of planning but can also serve as a basis for a continuously developing methodology of learning and rationalization. My purpose is to foster changes in attitudes to planning and to develop a new philosophy of planning with emphasis on teleology. I also intend to raise awareness concerning the limitations we have to face in the exploration of a given situation ...
    Description: report
    Keywords: 910 ; 914 ; QFG 000 ; Raumordnung und Raumplanung {Anthropogeographie}
    Language: English
    Type: article , publishedVersion
    Format: 89 S.
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  • 90
    Publication Date: 2021-03-29
    Description: Ziel der Arbeit ist sowohl eine Lokalisierung der rezent aktiven seismogenen Zonen in diesem Gebiet sowie eine Deutung dieser Seismizität und ihrer Charakteristik im Kontext der regionalen Seismotektonik. Die seismische Kopplung des Plattenkontaktes sowie ihre raum-zeitliche Variabilität wird untersucht. Dazu werden einerseits historische und instrumentelle Kataloge der Seismizität ausgewertet und andererseits Ergebnisse eigener temporärer kurzperiodischer landgestützter wie amphibischer Netzwerke ausgewertet. Die rezente Seismizität konzentriert sich hauptsächlich im süd-östlichen off-shore Bereich entlang des intra-krustalen Grabensystems des Forearcs, wobei Schwarmaktivität auf Fluidbewegungen hinweist, sowie entlang einer 100 km breiten Zone des Plattenkontaktes zwischen der Südküste Kretas und der südlichen Grenze des Grabensystems ohne Hinweise auf einen möglichen aktuellen Spannungsaufbau. Die seismische Kopplung des Plattenkontakts ist schwach und raum-zeitlich variabel.
    Description: thesis
    Keywords: 550 ; TSF 200 ; TOH 530 ; TSF 300$jGriechenland und griechische Inseln {Geophysik} ; TOH 530$jHäufigkeit und Verbreitung von Erdbeben {Geophysik} ; 551.22
    Language: English
    Type: monograph , publishedVersion
    Format: 140 S.
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  • 91
    Publication Date: 2021-03-29
    Description: Die Methodik zur Deformationsberechnung wird beschrieben. Wir nehmen eine Sensitivitätsanalyse vor, um den Einfluss der Eingabeparameter auf das modellierte Verschiebungsfeld zu bewerten. Wir betrachten GPS Messungen in Südchile, wo das große 1960er Erdbeben stattgefunden hat und leiten die wahrscheinlichsten Werte mehrerer Medium- und Quellparameter ab. Das 1960er Ereignis ist die wahrscheinlichste Ursache der Geschwindigkeitskomponente, die nicht durch Plattenkonvergenz erklärt werden kann. Wir betrachten den Einfluss von 10 Erdbeben entlang der Nord-Anatolischen Verwerfungszone seit 1939 und analysieren die Entwicklung des Coulombspannungsfeldes. Wir beziehen die zeitabhängigen Effekte der viskoelastischen Relaxation auf die Deformation ein. Diese Effekte sind teilweise größer als diejenige aus stetiger tektonischer Belastung und sollten nicht vernachlässigt werden. Die Ergebnisse können für die Planung geodätischer Kampagnen oder numerischer Inversionen nützlich sein.
    Description: thesis
    Keywords: 551.8 ; 550 ; VAE 130 ; TOH 700 ; VAE 130 ; TOH 700 ; Geomechanik ; Erdbebenwirkungen/Erdbeben-Engineering {Geophysik}
    Language: English
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  • 92
    Publication Date: 2021-03-29
    Description: Fission track (FT) thermochronology of zircon and apatite combined with structural analyses on deformed rocks was applied to investigate the cooling and denudation history of the Southern Chilean Andes at 41ʿ-42ʿS in relation to the late Cenozoic activity of the Liquiñe-Ofqui Fault Zone (LOFZ). At the Main Range, three different types of intrusives of the North Patagonian Batholith were characterized by their cooling histories: (a) Cretaceous intrusions in the upper crust with rapid initial cooling after emplacement, followed by slow cooling and rapid exhumation along the LOFZ in the late Miocene-Pliocene, (b) Cretaceous to Early Miocene deep intrusions, with steady cooling rates during the Miocene, denuded along the LOFZ in the Late Miocene-Pliocene, (c) Miocene shallow intrusions, distributed over the batholith, and with younger ages towards the LOFZ. The denudation episode is coeval to the arrival and subduction of the Chile Rise beneath the Taitao Peninsula.
    Description: thesis
    Keywords: 551.1 ; 550 ; TOO 000 ; VEX 100 ; VEX 500 ; VAE 400 ; VAJ 300 ; TSX 100 ; Geothermik {Geophysik} ; Anden {Geologie} ; Chile {Geologie} ; Tektogenese {Geologie} ; Abtragung durch Denudation {Geologie} ; Anden {Geophysik}
    Language: English
    Type: monograph , publishedVersion
    Format: 150 S.
    Format: application/pdf
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