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Search Results: 1 - 10 of 678 matches for " Kathrin Heitz "
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Power-Sharing in the Local Arena: Man – a Rebel-Held Town in Western C te d’Ivoire Machtteilung auf lokaler Ebene: Man – eine von Rebellen kontrollierte Stadt im Westen der C te d’Ivoire
Kathrin Heitz
Africa Spectrum , 2009,
Abstract: In general, peace agreements with power-sharing provisions are analysed at a national level. This article offers insights into the practices of power-sharing in the local arena of western C te d’Ivoire, in the town of Man. It investigates what brought about a change towards peace in the region of Man and then presents local forms of power-sharing between the community leaders and the rebels who have established a rather complex system of domination and taxation in the territory they occupy. Moreover, the implementation of a territorial power-sharing device, which is part of the peace agreement negotiated among the warring parties at the national level, is analysed: the redeployment of state administration to the rebel-held zones of the country. The ethnographic data on which the article is based reveals that the actors at the local level have their own strategies to address urgent needs and that they play a more active role in peacemaking than is usually acknowledged. Im Allgemeinen werden Friedensabkommen, die Machtteilungsklauseln vorsehen, im nationalen Rahmen analysiert. Der vorliegende Beitrag vermittelt Einsicht in die praktische Wirkung solcher Klauseln in lokalem Rahmen, und zwar in der Stadt Man im Westen der C te d’Ivoire. Untersucht wird, wodurch in der umliegenden Region ein Wandel hin zum Frieden erreicht werden konnte. Es werden lokale Formen der Machtteilung zwischen den führenden Pers nlichkeiten lokaler Gemeinschaften und den Rebellen ermittelt, die ein komplexes Herrschafts- und Steuersystem in den von ihnen besetzten Gebieten eingerichtet haben. Zudem wird die Durchführung einer territorialen Machtteilungsregelung untersucht, die auf nationaler Ebene als Bestandteil des Friedensabkommens zwischen den Kriegsgegnern ausgehandelt worden war: die Wiedereinsetzung der staatlichen Verwaltung in den von den Rebellen gehaltenen Gebieten des Landes. Das ethnographische Material, auf dem der Artikel basiert, belegt, dass Akteure auf lokaler Ebene ihre eigenen Strategien haben, dr ngende Bedürfnisse anzugehen, und dass sie eine deutlich aktivere Rolle bei der Schaffung von Frieden spielen, als gew hnlich anerkannt wird.
De Ella a él: caras y máscaras en la “novela” de Mercedes Pinto (1926) y en la película de Luis Bu uel (1952)
Heitz, Fran?oise
Arbor : Ciencia, Pensamiento y Cultura , 2011, DOI: 10.3989/arbor.2011.748n2015
Abstract: Mercedes Pinto’s itinerary took her from the Canary Islands, where she was born, to Mexico, after a passage through Uruguay. She first met success through her writings and cultural activities, and was then forgotten. However, her book –published in Montevideo in 1926– was adapted for the cinema by Luis Bu uel in 1952, and the film gave new life to this autobiographical “novel” He. If self-fiction prevails in the literary work, with the clear commitment of a feminist who takes a stand in favour of freedom –the freedom to divorce in that case–, in Bu uel’s Mexican film the study of the clinical case of paranoia acquires a new form of complexity. The attack on a parasitic bourgeoisie is united to the subversion of the melodramatic genre, with a false happy end which distorts established codes and lets the principle of doubt impose itself. In the same way the exploration of sexual roles, heir to the surrealistic trend, is devoid of any manichean simplification and stands out as a fascinating object for any hermeneutic approach. Mercedes Pinto, cuya trayectoria se desarrolló desde Canarias, su tierra de nacimiento, hasta México, pasando por Uruguay, conoció el éxito por sus escritos y actividades culturales y luego quedó sumida en el olvido. Sin embargo, la adaptación de su “novela” autobiográfica él (Montevideo, 1926) a la gran pantalla por Luis Bu uel en 1952, le deparó otra vida al libro. Si en la obra literaria prevalece la autoficción y su claro compromiso feminista a favor del divorcio, adquiere nueva complejidad en la película mexicana de Bu uel el estudio del caso clínico de la paranoia. Al ataque a una burguesía parasitaria se une una subversión del género del melodrama, cuyo falso final feliz pervierte los códigos establecidos, dejando que se imponga el principio de duda. Asimismo, la exploración de los roles sexuales, heredera de la corriente surrealista, rehúye toda simplificación maniquea y se afirma como objeto fascinante para toda labor hermenéutica.
A Survey of Control Structures for Reconfigurable Petri Nets  [PDF]
Julia Padberg, Kathrin Hoffmann
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.32002
Abstract: Software systems are increasingly executed in dynamic infrastructures. These infrastructures are dynamic as they are themselves subject to change as they support various applications that may or may not share some of the resources. Dynamic software systems become more and more important, but are difficult to handle. Modeling and simulating dynamic systems requires the representation of their processes and the system changes within one model. To that effect, reconfigurable Petri nets consist of a Petri net and a set of rules that can modify the Petri net. Their main feature is the capability to model complex coordination behavior in dynamically adapting infrastructures. The interplay of both levels of dynamic behavior requires a very precise description, so the specification when and which rules are to be applied plays a crucial role for the convenient use of reconfigurable nets. We differentiate several types of reconfigurable Petri nets and present a survey of control structure for these types, reconfigurable Petri nets. These control structures either concern the infrastructure, i.e., the rules and transformations or the system part, i.e., the firing behavior, or both. They are introduced by a short characterization and illustrated by examples. We state the results for various Petri net types and the tools supporting the different control structures.
The Use of Inorganic Packing Materials during Methane Biofiltration
Josiane Nikiema,Michèle Heitz
International Journal of Chemical Engineering , 2010, DOI: 10.1155/2010/573149
Abstract: The objective behind this study is to select a suitable inorganic packing material for methane biofiltration. Three packing materials are to be compared: two rock materials (average particles' sizes: 2 and 5?mm) and one porous clay particles (average particle size of 7?mm). The main parameter used to assess the efficiency of the packing material is the methane elimination capacity. The study reveals that the rock material having an average particle size around 2?mm is to be preferred. This result is probably due to its high specific surface area and to its good surface properties as compared to the other 2 tested porous materials. The influence of the nonirrigation with the nutrient solution of the biofilter is also investigated. It has been found that nonirrigation of biofilter causes the biofilter performance to decrease significantly (e.g., 45% decrease in 1 week) even with the humidification of the gas phase prior to its introduction into the biofilter. 1. Introduction Methane (CH4) is the most important greenhouse gas (GHG) after carbon dioxide (CO2). Its worldwide contribution to the greenhouse effect is estimated to 15% while for CO2, it is 78%. Methane has a global warming potential of 21, when compared to CO2, for a lifespan in the atmosphere of around 12 years [1]. Methane emissions are encountered in agriculture, in the energy sector, and in landfills with the latter being responsible for 25% of the total CH4 emissions in Canada. It is to be noted that around 60% of the total worldwide emissions of CH4 are of anthropogenic sources [2]. To avoid direct emissions into the atmosphere of the deleterious CH4, biofiltration can be used. This bioprocess involves microorganisms that biodegrade the target pollutant. The interest given to biofiltration is due to its operational cost, generally considered as lower than other elimination techniques such as the flaring. For a successful operation of a biofilter, a solid phase, also called packing material, on which the microorganisms attach and then grow, is required. Nonoptimized selection of the packing material generally yields an inefficient biological process [3] while its optimization results in lower footprint requirements. Packing materials that may be used during CH4 biofiltration are grouped into 2 main categories: organic and inorganic materials. Organic materials include composts and soils and are generally considered by several authors as the preferred materials [4]. The main advantages of those materials are that they are easily accessible and can naturally contain methanotrophic bacteria,
Crack Bridging Mechanism for Glass Strengthening by Organosilane Water-Based Coatings
Renaud Briard,Caroline Heitz,Etienne Barthel
Physics , 2004, DOI: 10.1016/j.jnoncrysol.2004.11.004
Abstract: We used an epoxysilane/aminosilane coating deposited from an aqueous solution to strengthen flat glass. We studied film formation, interfacial and mechanical properties of the film. The film is highly cross-linked with a 6 GPa Young's modulus and good adhesion. Our results suggest that crack face bridging accounts for most of the 75 % reinforcement in this system.
Theoretical study of finite temperature spectroscopy in van der Waals clusters. I. Probing phase changes in CaAr_n
F. Calvo,F. Spiegelman,M. C. Heitz
Physics , 2002, DOI: 10.1063/1.1566950
Abstract: The photoabsorption spectra of calcium-doped argon clusters CaAr_n are investigated at thermal equilibrium using a variety of theoretical and numerical tools. The influence of temperature on the absorption spectra is estimated using the quantum superposition method for a variety of cluster sizes in the range 6<=n<=146. At the harmonic level of approximation, the absorption intensity is calculated through an extension of the Gaussian theory by Wadi and Pollak [J. Chem. Phys. vol 110, 11890 (1999)]. This theory is tested on simple, few-atom systems in both the classical and quantum regimes for which highly accurate Monte Carlo data can be obtained. By incorporating quantum anharmonic corrections to the partition functions and respective weights of the isomers, we show that the superposition method can correctly describe the finite-temperature spectroscopic properties of CaAr_n systems. The use of the absorption spectrum as a possible probe of isomerization or phase changes in the argon cluster is discussed at the light of finite-size effects.
Modifications of histone cores and tails in V(D)J recombination
Kathrin Muegge
Genome Biology , 2003, DOI: 10.1186/gb-2003-4-4-211
Abstract: The organization of DNA into chromatin allows dense packaging of the genetic material and protects it against damage. Chromatin packaging also allows functional organization of the genome into active regions of 'open' euchromatin, which are accessible to regulatory factors, and silent regions of condensed heterochromatin [1,2]. The reversible switch from euchromatin to heterochromatin provides a means of controlling processes occurring on the DNA, such as replication and transcription, and has been proposed - in the so-called 'accessibility hypothesis' - to be crucial for regulating V(D)J recombination during immune-system development [3].During V(D)J recombination, gene segments that encode variable receptors within the immune system are recombined and newly assembled to allow expression of distinct immunoglobulins or T-cell receptors (TCRs) [4,5]. The V(D)J recombinase, a dimer of the site-specific recombination proteins RAG1 and RAG2, binds to recombination signal sequences that flank the V, D and J gene segments and initiates the process of cleaving the DNA sequences that are to be rearranged. Because the same recombinase is present in both T and B cells, but only B cells fully rearrange their immunoglobulin loci and only T cells their TCR loci, it has been proposed that a specific modulation of chromatin structure might open up recombination signal sequences to provide access for the recombinase. This 'chromatin accessibility' model could explain lineage and allele specificity of recombination as well as the temporal order of V(D)J rearrangement during development. A recent study from the Struhl and Oettinger laboratories [6] has provided new evidence in support of this model.The accessibility model gained support from the observation of close association between the processes of transcription and recombination of unrearranged V, D and J fragments. Deletion of cis-acting enhancer or promoter sequences frequently inhibited both processes [5,7], and it was propos
Zur brasilianischen Textart "Memorial Acadêmico": wie man sich in Brasilien auf eine akademische Stelle bewirbt
Schweiger, Kathrin;
Pandaemonium Germanicum , 2009, DOI: 10.1590/S1982-88372009000100006
Abstract: this paper analyses the brazilian genre "memorial acadêmico" and its function, outlining similarities and differences in comparison with the german genre "akademischer lebenslauf. based on a corpus of seven "memoriais", differences in terms of proposition and illocution between these two genres were identified.
Communication and Language in Niklas Luhmann's Systems-Theory
Maurer, Kathrin;
Pandaemonium Germanicum , 2010, DOI: 10.1590/S1982-88372010000200002
Abstract: this article investigates the function and reality of language in niklas luhmann's systems theory. how can one interpret the systems-theoretical assumption that language is based on communication? luhmann describes language as a dynamic media/form relationship, which is able to couple the social and psychological system. this structural coupling, which constructs consciousness and language as two autonomous systems, raises problems if one defines language from a cognitive point of view. this article discusses these problems and aims to develop assumptions and questions within the systems-theoretical approach.
Editorial
Kathrin Franke
Behemoth : a Journal on Civilisation , 2009,
Abstract:
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