Jugendliche Alltagsgestaltung und Identitätsbildung mit Fantasy-Rollenspielen - Schule öffnen für Elemente des Spiels und spielerische Aktionsformen

Gerade männliche Jugendliche nutzen in ihrer Pubertät und Adoleszenz zu einer gelingenden Gestaltung ihres Alltags und zur Ausbildung ihrer Identität zahlreiche Erscheinungsformen des Fantasy-Rollenspielens. In einem Prozess von Aneignung und Entäußerung integrieren dabei die Jugendlichen das überaus reiche multimediale Angebot, welches die Spiele bieten, in ihre Alltagsgestaltung, indem sie sich daraus spezifische Medien-, Text- und Ereignisarrangements bauen. Diese dienen einerseits der sozialen Integration und Distinktion, andererseits der Präsentation ihrer Identitätsentwürfe sich und anderen. Die Jugendlichen schaffen sich mittels dieser spezifischen Medien-, Text- und Ereignisarrangements eine in weiten Teilen von ihnen selbst bestimmte Welt, in der sie ihre Phantasie wie Kreativität mit großer Intensität, ja Obsession, innerhalb integrativer und solidarischer Interaktionsformen selbststeuernd und professionell ausleben. Diese Medien-, Text- und Ereignisarrangements zeigen Angebots- und Nutzungsformen, die sich nach einem medienkommunikativen Aneignungs- und Entäußerungsmodell in der Tradition der Cultural Studies (Stuart Hall) beschreiben lassen. Die Langzeitbeobachtung der Jugendlichen zeigt, dass sie alltagspragmatische Kulturtechniken zur selbstbestimmten Gestaltung von Alltag entwickeln: zunächst eine Strukturierung ihrer kognitiven, affektiven und pragmatischen Interaktion nach Kriterien erfolgreicher intrinsischer Interaktion, mit dem Ziel derer Perpetuierung im Flow-Erleben (Mihalyi Csikszentmihalyi), dann eine Ästhetisierung von Alltagswirklichkeit mittels kollektiver Fiktionalisierung in der Tradition des Collective Story Telling (Janet H. Murray). Diese Kulturtechniken stellen vor dem Hintergrund der Enkodierung und Dekodierung sozialer Codes spezifische Adaptionen von Prozessen der Bedeutungszuweisung und Subjekt- bzw. Identitätskonstitution dar. Die sie evozierenden und mit ihnen korrespondierenden handlungsleitenden Themen der Jugendlichen sind der Wunsch nach Rekonstitution von Gesamtheit in einer sich fragmentarisierenden Wirklichkeit, die Affirmation von Selbstbestimmung- und Autonomieerfahrungen, das Erleben von Reintegration und Solidarität für das sich dissoziiert erfahrende Individuum. Das Handeln der Jugendlichen basiert damit auf dem momentan dominanten Prozess einer Individualisierung von Lebenswelt unter den Bedingungen von Reflexivität und Erlebnisrationalität in der postmodernen Gesellschaft. Mit ihren Versuchen selbstbestimmter Gestaltung folgen sie dem aktuellen gesellschaftlichen Auftrag einer weitgehend in eigener Regie vorzunehmenden Lokalisierung dieses Prozesses. Zunehmend tritt diese von den Jugendlichen selbstgesteuerte Sozialisation neben die traditionell heteronome Sozialisation von gesellschaftlichen Instituten wie etwa die von Schule. Damit wird das Handeln der Jugendlichen zu einer Herausforderung an Pädagogik und Schule. Schule muss, wenn sie ihrem eigentlichen Auftrag von Förderung gerecht werden will, eine Sensibilität für diese Eigenständigkeit von Jugendlichen entwickeln und in der Beobachtung ihres Handelns didaktische Innovationen für Lehren und Lernen entwickeln. Im Mittelpunkt steht dabei die Wiederentdeckung des pädagogischen Dialogs, besonders aber die Entwicklung einer individualisierten Lernkultur und die Förderung jugendlicher Gestaltungskompetenzen, welche von deren alltagsästhetischen Erfahrungen und Kompetenzen im Umgang mit multimedialen Kulturprodukten ausgeht. Schule kann und muss für diese Prozesse selbstgesteuerten Lernens angemessene pädagogische Räume bereitstellen, in denen die Jugendlichen innerhalb eines geschützten Kontextes in der Auseinandersetzung mit eigenen wie fremden Entwürfen ihre Identität entwickeln können.

Continuation and discontinuation of local institution in community based natural resource management

Currently the push toward frontier areas, which until twenty years ago were still largely untouched by commercial agriculture, is taking place on a massive scale. This push is being driven not the least by global economic developments, such as the price increase of agriculture commodities like coffee and cocoa. In most cases the indigenous communities become trapped between the state monopoly in natural resource management and the competition for resources by external actors. In this processes the indigenous communities start to lose their access to resources. Another victim in this process is the environment where the natural resources are imbedded. International and national organizations working to conserve environment have became conscious of the important role that indigenous people could fulfill as partners in this endeavour. This partnership in struggle has produced a new discourse on the relationship between indigenous people and their environment. As a further consequence, programs were set up to develop what became known as Community Based Natural Resource Management (CBNRM) with its numerous variations. Based on a case study in a village on the eastern border of the Lore Lindu National Park in Central Sulawesi, this study questioned the basic assumption behind the concept of Community Based Natural Resource Management (CBNRM). Namely the assumption that communities living at the margin of forest are socially and culturally homogenous, still more or less egalitarian, and basically living in harmony with their natural environment. This study was inspired by the persistent critique – although still a minority – on the basic assumption the CBNRM from academicians and practitioners working through the Entitlement perspective. Another inspiration was the mounting critique toward the participatory approach. In its effort the study explore further the usefulness of certain approaches. One of the approach much relied on in this study was the local history of the community studied, through exerting oral and local written documents on local history, legends and local stories. These sources proofed quite capable in bringing the local history into the light. Another was the actor oriented approach, which later came to be supported by the concept of Social Pool Resources. The latter concept proofed to be useful as analytical instrument to integrate social institutions and the common pool resources, as a field of action for the different actors as human agencies.

Influence of the buffer environment on the Relative Biological Effectiveness of carbon ion radiation, investigated by Scanning Force Microscopy and gel electrophoresis

This work focuses on the analysis of the influence of environment on the relative biological effectiveness (RBE) of carbon ions on molecular level. Due to the high relevance of RBE for medical applications, such as tumor therapy, and radiation protection in space, DNA damages have been investigated in order to understand the biological efficiency of heavy ion radiation. The contribution of this study to the radiobiology research consists in the analysis of plasmid DNA damages induced by carbon ion radiation in biochemical buffer environments, as well as in the calculation of the RBE of carbon ions on DNA level by mean of scanning force microscopy (SFM). In order to study the DNA damages, besides the common electrophoresis method, a new approach has been developed by using SFM. The latter method allows direct visualisation and measurement of individual DNA fragments with an accuracy of several nanometres. In addition, comparison of the results obtained by SFM and agarose gel electrophoresis methods has been performed in the present study. Sparsely ionising radiation, such as X-rays, and densely ionising radiation, such as carbon ions, have been used to irradiate plasmid DNA in trishydroxymethylaminomethane (Tris buffer) and 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES buffer) environments. These buffer environments exhibit different scavenging capacities for hydroxyl radical (HO0), which is produced by ionisation of water and plays the major role in the indirect DNA damage processes. Fragment distributions have been measured by SFM over a large length range, and as expected, a significantly higher degree of DNA damages was observed for increasing dose. Also a higher amount of double-strand breaks (DSBs) was observed after irradiation with carbon ions compared to X-ray irradiation. The results obtained from SFM measurements show that both types of radiation induce multiple fragmentation of the plasmid DNA in the dose range from D = 250 Gy to D = 1500 Gy. Using Tris environments at two different concentrations, a decrease of the relative biological effectiveness with the rise of Tris concentration was observed. This demonstrates the radioprotective behavior of the Tris buffer solution. In contrast, a lower scavenging capacity for all other free radicals and ions, produced by the ionisation of water, was registered in the case of HEPES buffer compared to Tris solution. This is reflected in the higher RBE values deduced from SFM and gel electrophoresis measurements after irradiation of the plasmid DNA in 20 mM HEPES environment compared to 92 mM Tris solution. These results show that HEPES and Tris environments play a major role on preventing the indirect DNA damages induced by ionising radiation and on the relative biological effectiveness of heavy ion radiation. In general, the RBE calculated from the SFM measurements presents higher values compared to gel electrophoresis data, for plasmids irradiated in all environments. Using a large set of data, obtained from the SFM measurements, it was possible to calculate the survive rate over a larger range, from 88% to 98%, while for gel electrophoresis measurements the survive rates have been calculated only for values between 96% and 99%. While the gel electrophoresis measurements provide information only about the percentage of plasmids DNA that suffered a single DSB, SFM can count the small plasmid fragments produced by multiple DSBs induced in a single plasmid. Consequently, SFM generates more detailed information regarding the amount of the induced DSBs compared to gel electrophoresis, and therefore, RBE can be calculated with more accuracy. Thus, SFM has been proven to be a more precise method to characterize on molecular level the DNA damage induced by ionizing radiations.

Tanzanian Food Origins and Protected Geographical Indications

As the world`s population is constantly growing, food security will remain on the policy Agenda, particularly in Africa. At the same time, global food systems experience a new wave focusing on local foods and food sovereignty featuring high quality food products of verifiable geographical origin. This article argues that Geographical Indications (GI´s) hold the potential to help transform the Tanzanian agriculture-dependent economy through the tapping of value from unique products, attributing taste and colour to place or regional geography. This study aims to identify the existence and characteristics of food origin products in Tanzania that have potential for GI certification. The hypothesis was that there are origin products in Tanzania whose unique characteristics are linked to the area of production. Geographical indications can be useful policy instruments contributing to food security and sovereignty and quality within an efficient marketing system with the availability of government support, hence the need to identify key candidates for GI certification. Five Tanzanian origin products were selected from 14 candidate agricultural products through a scoping study. Rice from Kyela, Aloe vera, Coffee and Sugar from Kilimanjaro and Cloves from Zanzibar are some of the product cases investigated and provides for in-depth case study, as ´landscape´ products incorporating ´taste of place´. Interviews were conducted to collect quantitative and qualitative data. Data was collected on the production area, product quality perceived by the consumer in terms of taste, flavour, texture, aroma, appearance (colour, size) and perceptions of links between geography related factors (soil, land weather characteristics) and product qualities. A qualitative case study analysis was done for each of the (five) selected Tanzanian origin products investigated with plausible prospects for Tanzania to leapfrog into exports of Geographical Indications products. Framework conditions for producers creating or capturing market value as stewards of cultural and landscape values, environments, and institutional requirements for such creation or capturing to happen, including presence of export opportunities, are discussed. Geographical indication is believed to allow smallholders to create employment and build monetary value, while stewarding local food cultures and natural environments and resources, and increasing the diversity of supply of natural and unique quality products and so contribute to enhanced food security.