Sub-center formation is closely come out when urban environment started to grow and by decentralization and sub-urbanization process to lower the congestions and increase the efficiency in urban life. Besides, by means of rising problems of the growth in an urban area, there emerged the need to share the central activities within the metropolitan region. The growth followed by creation of new towns in the peripheries. Within that organization of the city, sub-centers started to appear to share the burden of the city centers. In this study, the sub-center evolution will be examined with respect to its relationship to urban growth and development. Hence the sub-center formation will be defined and studied in terms of city center, neighborhood center and shopping center developments of the settlements. The criteria on land-use, planning process, design of the built environment, district and neighborhood centers and policies of revisions in the suburb within world examples will help the study to develop principles for sub-center formation. This will provide us to build up some criteria for the central area especially in New Development areas. After the 1970s, the city of Ankara expanded rapidly and there emerged new development areas of the metropolitan region in the West Corridor. With respect to these, Ankara is analyzed with a new urban development area in that corridor called Batikent. With the help of discussions and analysis on sub-center formation on smaller plots belonging to private and a world example of sub-center development produced by the government, design and planning principles of Sub-center growth and development will be proposed in case of Batikent.

The aim of this thesis is to examine the affects of mobile communication practices on urban public places, particularly on meeting places in urban space. The contribution of mobile communication technologies into daily practices and rapid penetration of them into everyday-life is quite obvious in the last decade. The inevitable presence of mobile phones in everyday-life practices encourages urban researchers to consider their impacts on urban social context and consequently on urban public places. The objective of the research is to understand the incompatibility between the existing urban image and the mental image of mobile society. Mobile phones enable people to organize meetings independent from the scheduled program. This device not only increases the mobility of the user within the city but also enhances the individual&rsquo / s ability to develop coherent cognitive maps / because it gives the freedom of choice to pick-up the location for &ldquo / meeting places&rdquo / . For instance, beside landmarks, paths have been given new identities by mobile society. An increase in the number of indoor or outdoor meeting places (some being entirely random in selection), contributes to the cognitive maps and thus to the identity of the city. This stands as a contradicting argument to the classical understanding of the city and its parts, which is by and large accepted to be based on visual experiences. The predetermined and limited components (nodes, landmarks) which help individuals meet (and socialize) are now modest items of a larger inventory of settings. This thesis is aiming to analyze the behavioral and perceptual changes that derive from mobile communication practices. Through this research, the architectural and spatial qualities of the old and new inventories of meeting places are also a part of the study to reveal the differences, if any.

The mainstream accounts on local growth politics, which generally conceptualize the current context around the globalization of investments and the prominent role of local entrepreneuralism, argue for the tendency towards local coalitions. In opposition, the main argument of the thesis is that an increasingly fragmented and conflictual local growth politics is the defining feature of the contemporary localities. Defining the current context around the increased involvement of the business actors in directing the path of local economic growth and of the local state institutions in entrepreneurial activities, it was shown in Manisa case that intra-local conflicts are likely to deepen under conditions of increased inter-urban competition. By critically employing the concept of local dependence, it was shown that different local dependence factors result in the differentiation of the local actors&rsquo / priorities and preferences with regard to the utilization of local resources. Thus, it is concluded that a common local interest is not possible and that conflicts and contentions (between different-fractions of capital and between local labor and capital) stemming from the existence of different local dependence factors mark the process of local growth politics. As a special dependence factor in terms of local politics, the generation of land-rent was identified to be a potential basis for local collaborations whereas it was also found out that such coalitions are likely to be temporary and open to political contention. On the other hand, the supra-local relations of actors, which are essential for the pursuasion of local interests, are observed to have a determinant effect on local conflicts.

To a large extent, natural phenomenon like earthquakes, floods, lanslides and etc may seem &ldquo / natural events&rdquo / which are out of human control. In fact, the sociopolitical structure is the main cause of earth tremors which turn into disasters. What is notable and striking is that, because of institutional and social vulnerabilities and little or misguided efforts for disaster loss mitigation, natural events may turn into disasters resulting negative and devastating consequences. Institutional vulnerabilities connote a lack of local administrations&rsquo / capacity for disaster mitigation planning, furthermore awareness for accreting local stakeholders for disaster loss reduction. Social vulnerabilities, refers to miss-knowledge and lack of awareness for disasters in the society. In Turkey, it is hard to say that there has never been efforts for disaster loss reduction, whereas / the main focus of the state agencies has been on post-disaster emergency relief, literally wound healing for decades. Generally speaking, localities which experience a disaster may encounter significant losses in development, hence a significant decrease in local capacities which takes enormous resources to restore. The housing stock and urban fabric, which inherit an historical background weaved by missguided disaster policy that only focus on post-disaster emergency relief phase, pictures the extent of the problem in Turkey. In addition, both &ldquo / institutional errors which lead to underachievement in disaster policy and practice&rdquo / and &ldquo / opportunities for building robust and resilient forms of institutions&rdquo / come into local agenda. Errors, which might have been altered by long term and comprehensive modes of local planning for disasters, may lead to underachievement by local agents. To achieve such a model, we are in need to carry out qualitative and quantitative data collecting and analyzing techniques in different phases. The two analysis techniques are in-depth interviews (IDI) and drawing Concept Maps that will be conducted in the analyses process with local respondents selected by snowball technique.

All living things mostly the humans, as builders of civilizations, have always been in intrinsic bonds with water. This interaction between water (oceans, seas, lakes, rivers etc.) and settlements has existed since ancient civilizations. Among water resources, &lsquo / flowing waters&rsquo / such as rivers, streams, creeks, etc. have a prominent role as they are the lifeblood of most cities in terms of providing transportation, security, energy, irrigation, commerce, and recreation. By the late 19th century, developments of terrestrial transportation modes diminished the magnetism of rivers and riverfronts, and growing industries led to the deterioration of rivers. Owing to these reasons, along with many others, they turned into sewage channels, were covered up, and became water scopes detached from the urban life. Particularly since the 1970s, with more attention given to sustainability of resources, a greater awareness has grown of the vital role of urban rivers as a resource for humans and a lifeline for cities. After being neglected for decades, urban rivers have started to be rehabilitated to solve the related problems. The new approach to urban river rehabilitation beyond classical practices that aim at recovering the physical conditions of rivers has come to the fore to address the problems comprehensively. Instead of independent and one-dimensional practices, the urban rivers have become to be seen as a vital part of urban water system and of the city itself. While rehabilitating urban rivers, recovering river health can be ensured provided that the entire urban water ecosystem is taken into consideration. The ecocity approach is one of the major new approaches that geared toward achieving a healthy city, and sustainability of water system is the significant goal within this approach. In this regard, the thesis first asserts that the ecocity criteria are likely to give way to a more sustainable future for urban rivers. Besides being a part of the ecosystem, urban rivers have transformed together with the surrounding built environment throughout the history of cities. Significant focal elements of the urban pattern, urban rivers should be dealt with other urban focal points, with the introduced concept of river-city integration, which is proposed as the second assertion of the thesis. In this respect, the study attempts to investigate urban rivers and their rehabilitation in relation with both the ecocity approach, and the river-city integration concept. The research methodology in the present study involves comparative anaysis of best practices and case study analysis. Porsuk River and the city of Eskisehir, which the river passes through, were selected as a case for empirical study. Criteria sets that determined within the frames of ecocity and river-city integration, and the testing of the criteria in the case area offers an opportunity to contribute to literature of river and city coexistence.

The thesis evaluates the case of Ortahisar where natural rock-caved storage sector has been the major dominant traditional economic activity since 1950s. However this economic sector has begun to recess because of conservation priorities after the declaration of G&ouml / reme Historical National Park including Ortahisar settlement in World Heritage List by UNESCO in 1986. In addition, the tourism sector has begun to develop gradually in the Region as large amounts of tourists began to invade because of the world heritage advertisement of UNESCO and has begun to threaten the town&rsquo / s local economy, natural rock-caved storage sector. The aim of this thesis is to balance the stone-caved storage sector and tourism sector facilities and integrate the sustainable sides of them with conservation and sustainability objectives in a socio-spatial planning model and to ensure these two sectors&rsquo / positive contributions to each other and local economy. Finally, the thesis will emphasize the contribution of heritage planning to the sustainability of the local economy, ensuring of each sectors contribution to each other and local economy and heritage conservation process.

This thesis explores the relationship between urban restructuring and working-class communities in the context of post-industrial neoliberalism. While working-class communities were the bedrock of classical sociological analysis in the industrial period, it is thought that class no longer provides a meaningful social identity and increasing individualisation is often said to signify that agency is set free from the confines of structure. In this thesis, I attempt to, first, confront these assertions by reasserting the relationship between urban restructuring working-class communities and, second, represent contemporary working-class lives, through an ethnographic case study of gentrification in working-class neighbourhood, Partick in Glasgow. Substantively, in this thesis I take gentrification as a key process of class restructuring which is spatially articulated and is the leading edge of urban policy both in the UK and globally. While gentrification intimates that urban restructuring and working-class communities are inextricably connected, this relationship is not always fully explicated within research; orthodox definitions separate economic and cultural fields and working-class experiences are underrepresented. Thus theoretically, in this thesis, I attempt to attend to these shortcomings by using hegemony as framework. Hegemony refers to a form of rule relevant to how transformations in social relations are managed whilst the capitalist system is maintained overall. This involves a mix of consent and coercion which combine structural and agential processes, highlighting the reciprocal relationship between material and the phenomenological levels. Within this, gentrification is conceived as a political strategy, which not only seeks to create space for the more affluent user; it seeks to, consensually, create the more affluent user which, in the context of neoliberalism, relates to a moral and financial economy. This new sociological perspective on gentrification combines cultural and material understandings, whilst making working-class communities and their everyday lives the centre point of analysis. This focus is imperative since working-class people and places are the principal targets of policy-led gentrification, yet current representations of and conceptual language used to describe working-class lives have waned within mainstream sociology. I examine how working-class residents receive, negotiate and resist gentrification processes to reveal the ‘hidden injuries’ as well as the ‘hidden rewards’ of urban restructuring. This study aims to do this by collecting ‘locational narratives’ of 49 residents of Partick. These accounts revealed that respondents’ rejection of traditional class identity did not signify the end of class, rather, it demonstrated that there was a material rationale underpinning individualisation and their disassociation with class, which relate to neoliberal ideologies that decontextualise class and promote self-determination. Residents’ place-based attachment is revealed to be a crucial class signifier – on both phenomenological and material levels. Elective fixity describes the choice and control residents’ have over their ability to stay fixed within their neighbourhood. Respondents are shown to have a paradoxical relationship with gentrification whereby they are invited to participate in processes as consumer citizens, through homeownership or consuming privatised neighbourhoods services, yet are not provided with the means to consume. Residents’ experiences of gentrification are characterised by tensions around control and choice and lack thereof. While gentrification brought new rewards whereby working-class respondents could, provided they had the means, act as gentrifiers, they were also confronted with novel forms of displacement, identified as new typologies which relate to the increased privatisation of social housing. Thus, an emergent negotiated culture of contemporary working-class communities is revealed which is set within the confines of structure within a post-industrial neoliberal context. Using a framework of hegemony to understand the political project of gentrification reveals the reciprocal relationship between urban restructuring and the remaking of the working-class subject.

This work focuses on crustal interaction in magmatic systems, drawing on experimental petrology and elemental and isotope geochemistry. Various magma-chamber processes such as magma-mixing, fractional crystallisation and magma-crust interaction are explored throughout the papers comprising the thesis. Emphasis is placed on gaining insights into the extent of crustal contamination in ocean island magmas from the Canary Islands and the processes of magma-crust interaction observed both in nature and in experiments. This research underscores that the compositions of ocean island magmas, even primitive types which are classically used as probes of the mantle, are susceptible to modification by crustal contamination. The principal mechanisms of contamination identified from work on both Tenerife and Gran Canaria (Canary Islands) are assimilation and partial melting of the pre-existing island edifice and intercalated sediments by newly arriving magma (i.e. “island recycling”). The information that we can gain from studying solidified magma and entrained crustal xenoliths concerning the rates and mechanisms of crustal assimilation is, however, limited. To address this shortcoming, a series of time-variable crustal carbonate assimilation experiments were carried out at magmatic pressure and temperature using natural materials from Merapi volcano, Indonesia. A temporally constrained reaction series of carbonate assimilation in magma has hence been constructed. The experiments were analysed using in-situ techniques to observe the progressive textural, elemental, and isotopic evolution of magma-carbonate interaction. Crucially, carbonate assimilation was found to liberate voluminous crustally-derived CO2 on a timescale of only seconds to minutes in the experiments. This points to the role of rapid crustal degassing in volcanic volatile budgets, and, pertinently, in magnifying hazardous volcanic behaviour. This thesis, therefore, delivers detailed insights into the processes of magma-crust interaction from experiments and geochemistry. The outcomes confirm that crustal processes are significant factors in both, i) ocean island magma genesis, and ii) magma differentiation towards compositions with greater explosive potential which can, in turn, manifest as hazardous volcanism. / Felaktigt tryckt som Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 707

Depuis au moins 540 Ma deux grands systèmes de subduction coexistent sur Terre : d'une part, les systèmes de subduction-collision (chaînes Hercynienne, Himalayenne ou Alpine) et d'autre part, les systèmes de subduction de type péri-pacifique. Pour ces derniers, l'avant-arc constitue une zone clef pour retracer l'évolution de la subduction au cours du temps. En effet ces zones au contact avec le slab peuvent enregistrer des événements tectoniques et/ou des conditions métamorphiques variées (e.g. formation de " paired metamorphic belts "), qui sont autant d'indicateurs du contexte géodynamique. Le massif métamorphique de El Oro en Equateur est un exemple exeptionnel où une section complète et basculée de l'avant-arc Triasique est préservée. L'ensemble est constitué d'une série métasédimentaire de bas à haut grade métamorphique intrudée par des granitoïdes de type S, juxtaposé avec un laccolithe gabbroïque et des schistes bleus. Ce travail de thèse s'est concentré sur l'étude du métamorphisme de haute-température basse-pression et ses relations les schistes bleu. Afin de contraindre l'événement tectono-métamorphique affectant l'avant-arc Equatorien au Trias et la formation d'une "paired metamorphic belt", nous avons utilisé des outils structuraux, métamorphiques, géochimiques, géochronologiques et de modélisation thermique. Nos résultats montrent que durant cette période l'avant-arc Equatorien connait un intense épisode de fusion partielle en régime extensif. La base de la croûte est migmatisée sur une épaisseur de 10km. Les estimations Pression-Température indiquent que les conditions de fusion partielle varient de 4.5 kbar et 650°C pour la partie supérieure métaxitique et jusqu'à 7.5 kbar et 720°C pour la partie inférieure diatexitique. La gradient géothermique inféré est divisé en deux segments : un segment supérieur caractérisé par un gradient de 40°C/km et un segment inférieur caractérisé par un gradient quasi-isothermique. L'absence de paragénèse de ultra-haute température est attribuée à la grande fertilité du protolithe métasédimentaire. Les résultats géochimiques montrent que les plutons granodioritiques sont issus d'un mélange entre : (1) les liquides de fusion partielle produit par la réaction de deshydration de la muscovite des métasédiments et (2) un magma basique. Les âges U-Pb sur zircons et monazites révèlent que l'événement anatectique fût bref entre 229 et 225 Ma. La source de chaleur à l'origine de l'événement thermique est attribuée à la mise en place d'un pluton gabbroïque à ~ 230 Ma en base de croûte. Successivement, se sous-plaque les schistes-bleu refroidissant rapidement l'avant-arc. L'événement anatectique observé dans le massif de El Oro au Trias s'insrit à plus grande échelle au sein d'une large anomalie thermique affectant l'ensemble du continent sud Américain entre 260 et 220 Ma. Durant cette période la marge est un soumise à un régime extensif accompagné d'un important magmatisme d'origine crustal, principalement en position d'arc et d'avant-arc. Nous attribuons cette anomalie thermique d'ampleur continental à une "avalanche mantellique". A la lumière du contexte géodynamique globale nous inteprétons la formation de la paired metamorphic belt de El Oro à la rupture du slab.

Major depression is a serious mood disorder affecting more than 120 million people worldwide, irrespective of their race or socio-economic status. This psychiatric disorder is predicted to become the second leading cause of disability by the year 2020, second only to heart diseases in the global population, without distinguishing differences in the incidence within defined age groups. Depression is known to affect people across all age groups, including children, adolescents, adults and geriatrics, although older age is associated with an increased susceptibility to major depression and other psychiatric conditions. Until the 1970‘s depression during childhood and adolescence was thought to be uncommon or non-existent. Recent epidemiological studies have demonstrated that there is a persistent escalation in the prevalence of depression in children and adolescents. Accordingly, the number of prescriptions for drugs to treat this disorder in juveniles has escalated significantly. With our current limited understanding of the safety and long-term effects of treatment with antidepressants, the clinician is left making decisions without sound evidence of safety. In addition, psychotropic drugs may affect neurodevelopment during childhood and adolescence and may consequently modulate susceptibility to psychiatric disorders later in life. The objective of the current study was to investigate the effects of early-life (pre-natal and postnatal) chronic treatment with venlafaxine, a dual action serotonin-noradrenalin reuptake inhibitor, during the developmental phase of the serotonin and norepinephrine pathways in stress-sensitive rats on measures of cognition, anxiety-like and depressive-like behaviour later in life. The study also investigated which age shows optimal behavioural changes later in life, following the above mentioned administration of venlafaxine. In addition we also determined the effects that the administration of venlafaxine has on the levels of monoamines l-norepinephrine (l-NE) and serotonin (5-HT) in the prefrontal cortex and the hippocampus. A number of translational animal models of psychiatric disorders have been described and validated, and is suitable for such investigations. For the current study we used stress-sensitive Flinders Sensitive Line (FSL) rats and their controls, Flinders Resistant Line (FRL) rats. Pregnant dams were injected subcutaneously for 14 days with 10 mg/kg venlafaxine or saline from pre-natal day 15 (ND-15) to ND-01. New-born pups were then injected subcutaneously with 3 mg/kg venlafaxine or saline for 14 days from postnatal day 3 (ND+03) to ND+17. These doses were determined from previous studies reported in literature. Four rat treatment groups of both FSL and FRL rats received injections during pre-natal + postnatal ages as follows: saline + saline, venlafaxine + saline, saline + venlafaxine and venlafaxine + venlafaxine. Following the drug treatments, all rat groups were housed under normal conditions until the indicated time to be subjected to a battery of behavioural tests, including the novel object recognition test (nORT), locomotor activity test (Digiscan®), elevated plus maze (EPM) and forced-swim test (FST), scheduled on either ND+35, ND+60 or ND+90. Separate treatment groups were used for each age group. After the behavioural tests animals were decapitated, the brains removed and the prefrontal cortex and hippocampus dissected out. These were analysed at a later stage using an HPLC with electrochemical detection to determine the levels of the monoamines l-NE and 5-HT. All animal procedures were approved by the Ethics Committee of the North-West University (approval number: NWU-00045-10-S5), and are in accordance with the recommendations of the National Institutes of Health guide for the care and use of laboratory animals. The data from the current study suggest that in general FRL rats were not influenced by the early-life treatment with venlafaxine, as observed in the nORT, EPM or FST on ND+35, ND+60 or ND+90. There was minimal changes seen in the immobile behaviour in the FST of FRL rats that received prenatal venlafaxine. As expected, depressive-like behaviour in the FST was significantly enhanced in FSL rats relative to corresponding FRL rat groups as observed at ND+35 and ND+60, but not ND+90. Importantly, depressive-like behaviour was reversed following pre- and postnatal treatment with venlafaxine in FSL rats at ND+60, relative to the corresponding FRL rat groups. Reversal of depressive-like behaviour in FSL rats were not observed at ND+35 or ND+90, suggesting a delayed response that is reversed later in adulthood. The data from the nORT, Digiscan® or EPM did not reveal any significant differences between the various FSL treatment groups, including at ND+60. The current study therefore demonstrated that the treatment regimen employed had a transient effect on depressive-like behaviour later in life and suggested that genetic susceptibility plays an important role in the treatment of depression. This was suggested by the venlafaxine-induced decrease in immobile behaviour exhibited by FSL rats at ND+60 in the FST, and the subsequent increase in immobile behaviour at ND+90. In general, the most significant venlafaxine-induced effects were seen in FSL rats, suggesting genetic susceptibility plays an important role. / MSc (Pharmacology), North-West University, Potchefstroom Campus, 2014