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Keywords
- Architektur (25)
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Die Instandhaltung der städtischen Trinkwassernetze ist Aufgabenschwerpunkt der Wasserversorgungsunternehmen bzw. Netzbetreiber. Dazu notwendige Rehabilitationsplanungen stützen sich zurzeit weitgehend auf die Trendprognose von Schadensraten und die Erfahrungen der Mitarbeiter. Der Einfluss wesentlicher Kenngrößen wie Werkstoffeigenschaften oder die Resttragfähigkeit des Rohres bleiben hierbei größtenteils unberücksichtigt. Über materialtechnische Untersuchungen werden die notwendigen Kenngrößen ermittelt, die eine zuverlässige Bewertung des technischen Zustands des Rohrstrangs ermöglichen. So lassen sich die Prognose der technischen Nutzungsdauer und Rehabilitationsplanungen auf eine solide Basis stellen. In dieser Dissertationsschrift wird hierzu ein Untersuchungs- und Bewertungsalgorithmus mit integrierten Prognoseverfahren erarbeitet.
Texts from the web can be reused individually or in large quantities. The former is called text reuse and the latter language reuse. We first present a comprehensive overview of the different ways in which text and language is reused today, and how exactly information retrieval technologies can be applied in this respect. The remainder of the thesis then deals with specific retrieval tasks. In general, our contributions consist of models and algorithms, their evaluation, and for that purpose, large-scale corpus construction.
The thesis divides into two parts. The first part introduces technologies for text reuse detection, and our contributions are as follows: (1) A unified view of projecting-based and embedding-based fingerprinting for near-duplicate detection and the first time evaluation of fingerprint algorithms on Wikipedia revision histories as a new, large-scale corpus of near-duplicates. (2) A new retrieval model for the quantification of cross-language text similarity, which gets by without parallel corpora. We have evaluated the model in comparison to other models on many different pairs of languages. (3) An evaluation framework for text reuse and particularly plagiarism detectors, which consists of tailored detection performance measures and a large-scale corpus of automatically generated and manually written plagiarism cases. The latter have been obtained via crowdsourcing. This framework has been successfully applied to evaluate many different state-of-the-art plagiarism detection approaches within three international evaluation competitions.
The second part introduces technologies that solve three retrieval tasks based on language reuse, and our contributions are as follows: (4) A new model for the comparison of textual and non-textual web items across media, which exploits web comments as a source of information about the topic of an item. In this connection, we identify web comments as a largely neglected information source and introduce the rationale of comment retrieval. (5) Two new algorithms for query segmentation, which exploit web n-grams and Wikipedia as a means of discerning the user intent of a keyword query. Moreover, we crowdsource a new corpus for the evaluation of query segmentation which surpasses existing corpora by two orders of magnitude. (6) A new writing assistance tool called Netspeak, which is a search engine for commonly used language. Netspeak indexes the web in the form of web n-grams as a source of writing examples and implements a wildcard query processor on top of it.
Inhaltliche Struktur:
Theoretischer Teil: Um Kulturtechniken des künstlerischen Ausdruckes, und damit den Bezug zwischen Kunst und Medientechnologie zu ergründen, wurde das Verhältnis zwischen dem Betrachter und dem Betrachteten erforscht. Begriffe wie Originalität, Repräsentation, Imitation sowie Aneignung und Rezeption kommen an historischen Beispielen zur Diskussion.
Praktischer Teil: Mit zwei Ausstellungen (Malerei, Installation) wurden verschiedene Modelle des Sehens problematisiert, um kulturelle und historische Variablen zu ermitteln, die visuelle Kultur begründen. Außerdem wurden die Unterschiede zwischen Beobachter und Betrachter/Zuschauer in Ausstellungssituationen hinterfragt.
Kurzfassung:
Medientechnologie hat sich selbst zu einer Kunstform entwickelt. Sie kann Künstler dabei unterstützen, ihre Ideen handwerklich umzusetzen (Beispiel: Camera Obscura) und zu reflektieren. Dabei geht es um mehr als um technische Hilfmittel für den künstlerischen Ausdruck. Wird die Beziehung zwischen Betrachter und Betrachtetem als eine Transaktion gesehen, in der beide Begriffe gleichermaßen aufs Spiel gesetzt werden, dann ist es notwendig eine Visualität zu bestimmen, an der der Betrachter (im Sinne von Jonathan Crary) aktiv teilnimmt. Das Sehen darf nicht als absolute Erfahrung verstanden werden, denn einzeln analysiert – ohne Einbeziehung anderer Sinneswahrnehmungen und deren mediale Erweiterungen – führt es zu keinem adäquaten Verständnis davon, wie Bedeutungen produziert werden. Daraus ergibt sich die Forschungsfrage, wie die künstlerische Reaktion auf die im 19. Jahrhundert aufstrebenden Fotografie die Ausdrucksformen beeinflusste und ob sich die gegenseitige Abhängigkeit von Malerei und Fotografie wissenschaftlich-künstlerisch rekonstruieren lässt.
Die theoretische Referenz für diese Forschung bildeten Theorieansätze nicht der Kunstgeschichte, sondern der „Visual Culture Studies“, konkret: Martin Jay („Scopic Regimes of Modernity“), Jonathan Crary („Techniques of the Observer“) und Rosalind Krauss („Originality“).
Dazu wurde die Rezeption der aufkommenden Fotografie in der künstlerischen Produktion beispielhaft untersucht, wobei mit Eugène Delacroix, Gustave Caillebotte sowie dem künstlerischen Dialog zwischen Henri Matisse und Brassai die Problematik herausgearbeitet wurde, mit der sich die bildende Kunst im Lauf jener Jahrzehnte, in denen die Fotografie sich etabliert hat, konfrontiert sah. Sie war eine medientechnische Neuheit mit älteren Wurzeln und diente der Malerei als Hilfsmittel (Camera Obscura) und hat durch ihr technische Potenzial dennoch das Verständnis von Kunst radikal verändert: sie löste das Ideal einer bestimmten Maltechnik ab, die sich mit dem Verbergen des Pinselstriches verband, und bedeutete in diesem gewissen Sinn das „Ende der Kunst“ (nach Paul Delaroche).
Bis in die heutige Kunstproduktion zieht sich die Frage, was nach dem Ende der Perfektionierung von Reproduktion durch ihre Übernahme mittels medientechnischer Apparatur, die nun selbst zum Ausdruck strebt, überhaupt noch ein „Kunstwerk“ ist oder sein kann. Technisch gestützte Formen der Aneignung und Imitation stellen das klassische Wertemodell der meisterlich ausgeführten Repräsentation von Wirklichkeit in Frage, obwohl „Originalität“ angesichts der Flut von Reproduktionen doch immer noch - oder gerade deswegen - eine Wertschätzung erfährt.
Daher wurden dann auch im künstlerischen Teil verschiedene Modelle des Sehens getestet, um kulturelle und historische Variablen zu ermitteln, die visuelle Kultur beeinflussen und festlegen. Dabei wurde vor allem auch die Rolle der Beobachter reflektiert - die anders als bei Unterhaltungsmedien - in Kunstkontexten eben keine passiven Zuschauer sind. Was den Künstler, und was den Betrachter von Kunst definiert, lässt sich gleichwohl weder auf ein bestimmte Sinnlichkeit noch eine bestimmte Medientechnologie reduzieren.
Wie schon nach dem Aufkommen der Fotografie werden Künstler weiterhin auf der Suche nach neuen Ausdrucksformen sein, um andere Weltwahrnehmungen und neue, andere Perspektiven menschlicher Existenz zu erlangen. Mediale Technologien haben sie dabei immer schon unterstützt. Aus meiner Untersuchung schließe ich, dass neue Technologien Kunst nicht definitv beeinflussen, wohl aber ihren Entstehungsprozess verändern und beeinflussen können. Die Frage, wie das geschieht und welche Effekte es zeitigt, bedarf einer stets erneuerten Verhandlung.
Daraus folgt die Schlussfolgerung, dass man von Künstlern verlangen kann oder sogar muss, sich vor der Wirklichkeit der Technologie nicht zurückzuziehen, sondern sich medientechnische Kompetenzen anzueignen und sich aktiv am Diskurs um neue Technologien zu beteiligen.
In this dissertation, a new, unique and original biaxial device for testing unsaturated soil was designed and developed. A study on the mechanical behaviour of unsaturated sand in plane-strain conditions using the new device is presented. The tests were mainly conducted on Hostun sand specimens. A series of experiments including basic characterisation, soil water characteristic curves, and compression biaxial tests on dry, saturated, and unsaturated sand were conducted. A set of bearing capacity tests of strip model footing on unsaturated sand were performed. Additionally, since the presence of fine content (i.e., clay) influences the behavior of soils, soil water characteristic tests were also performed for sand-kaolin mixtures specimens.
The Chinese Shopping Centre: Integration of a Western Commercial Format into Chinese Urban Space
(2009)
Being transposed to China and absorbed by its urban space, the Western shopping centre undergoes a process of “Sinicisation”, which turns it into a spatial hybrid: a Western retail format shaped by distinctive features of Chinese space production and space use. To a large extent, this study can be regarded as a marginal number of its kind which tries to scientifically understand the impact of a socially, culturally and economically absolutely different urban environment on the model (ideal type) of the Western shopping centre.
The main hypothesis of this research is that civil society’s participation is able to improve the planning results in the Chinese city of Qingdao in the contemporary age. Qingdao is a young city developed from a German colony in eastern China. Apart from the powers of the government and the market, the 'third power', including mainly the power of volunteer citizens and the citizens’ organisations, also positively promoted the spatial development in Qingdao’s history. Since 1978’s reform, Qingdao’s great progress in urban housing, historic preservation, public space and urban traffic results mainly from the increasing strength of both the government and the market, while the government has always been the dominant promoter for urban construction. The actual planning mechanism – the government formulates 'what to do' itself and decides 'how to do it' with the market – has much limit in reacting to the rapidly changing situation, serving diversified social interests, and raising sufficient funds for the city’s urgent demands in Qingdao. Searching for new development strategies based on the understanding of civil society in the Chinese context can provide a promising perspective on the urban studies of Qingdao. Chinese civil society can be understood as the intermediate sphere of individuals, families, citizen’s organisations, social movements, public communication, and of the non-governmental body’s non-for-profit involvement for the provision of public services between the state and the market. China has its own cultural tradition of civil society, and the modern civil society in China is showing its great potential in improving social integration and urban life. The Chinese government has started to advocate for civil society’s participation in urban construction, and encouraging the 'bottom-up' mechanism in the planning-related issues through political statements and legislative approaches since the last two decades. The existing planning practice in China is able to demonstrate that civil society’s participation helps improve the quality of Chinese urban planning realistically under present conditions, and that moderation of planning experts and the push of the authority are the key factors for successfully integrating the strength of civil society in planning. However, the power of civil society is not yet sufficiently discovered in Qingdao’s planning. For better planning results, the city of Qingdao needs more initiatives to mobilize civil society in the planning practice, as well as more support to enrich the related studies. This thesis recommends that Qingdao establishes the 'Foundation for Collaborative Urban Solutions' through the joint efforts of the authority and civil initiatives, which aims at moderating and facilitating the strength of civil society. The suggested pilot projects include: a. The Community-based Housing Workshop for regenerating the living environment of the run-down communities, where the residents are willing to collaborate with the foundation with own efforts. b. The Heritage Preservation Workshop for suggesting an efficient supervision mechanism involving civil society which protects the historic heritage from being destroyed in the urban construction. c. The Public Space Forum for improving accessibility, quantity and ecologic function in the development of Qingdao’s urban public space with the knowledge and creativity of both the government and the citizens. d. The Mass Transport Forum for a realistic strategy for funding the rail-based traffic system in Qingdao through enabling the civil society - especially the individual citizens and their households to invest. The 'Foundation of Collaborative Urban Solutions' is able to improve Qingdao’s planning to cope with the urban problems the city are facing in its contemporary development, as well as to provide valuable reference for the further research of civil society’s participation in Chinese urban planning.
Post Conflict Reconstruction is a very complex topic, whether it is to be undertaken by the Local or the International Community. The process of the Post Conflict Development is to be very hard to investigate, primarily for the combination of socio-cultural phenomena, war and political instability; having difficulties of conducting solid empirical analysis (obtaining reliable data) and dealing with war-torn communities. The multifaceted process of the reconstruction is ought to touch a lot of countries vital segments, whereas each of them requires different approach; coordination with one another; and unification in their common aim.
The emergency of the assistance programs are not equal, same as with the priority and weight when compared with each other, therefore occasionally there are programs for the success of which the other less important actions are violated or neglected.
The case is with the International Community presence ( the set up), which aside from their mission and projects, it is considered to play a very important role on the urban development of a post conflict city; the setting was never planned or considered in a holistic manner, therefore IC establishment was done ad hoc and it was guided by issues which did not help at its greatest to the urban development of the city and more over to the citizens who were most in need.
The study is about the Urban Development, due to the fact that the biggest concentration of the International Community is likely to be in the urban centers, and the experienced changes are of a much considerable magnitude. The reconstruction phase is likely to be lasting at about 10 years and more , consequently the International Community for that time being tends to be recognized as temporary citizens of the city, and it is inevitably that they will be having an impact on the urban development of the city; in that basis it is considered to be significant that the International Community Establishment/Set Up be included into the International Organizations mission and assist in the overall mission of the reconstruction.
The Garden Suburbs of Cairo. A morphological urban analysis of Zamālik, Ma‘ādī, and Heliopolis
(2019)
During the British occupation of Egypt in the beginning of the 20th century, several suburban developments were established on the periphery of the city of Cairo. These initially attracted the small British community and later foreigners and Egyptians, mainly from the elite community. These suburban developments, including Ma‘ādī, Zamālik, Heliopolis, Qubbah-Gardens, and Garden City, became the fashionable residential quarters of Cairo. Until now, some of these areas still represent the distinguishable residential settlements of the city. Ma‘ādī, Zamālik, and Heliopolis specifically are nostalgically appropriated in the design of recent suburban developments around Greater Cairo.
Some of the 20th century suburban developments around Cairo are labeled or described as “garden cities.” During the early 20th century, two thriving British town planning movements emerged, namely, the garden city movement and the garden suburb movement. This study investigates the hypothesis that these suburban developments, are indeed “garden suburbs” like the British movement, despite that few are labeled or described as “garden cities,”. Although several studies have examined the historical development of such settlements, their relation, however, to the British planning movements and their transfer process received little attention from planning historians. Few studies also analyze the urban design aspects that made these suburban developments distinguishable since their foundation and until today.
To guide the validity of this study’s hypothesis, a set of research questions are formulated: (1) What is the difference between the garden city and the garden suburb movements? (2) How were the British planning movements transferred to Egypt? (3) What are the urban design aspects that makes these suburban developments distinguishable as garden suburbs? To answer these research questions, a historical morphological urban analysis is conducted through case studies.
The study first studies the difference between the garden city and the garden suburb movements, mainly in Britain, through the analysis of publications on the promoter of both movements: for the garden city, E. Howards’ book “The Garden City of Tomorrow,” published in 1902, and for the garden suburb, R. Unwin’s books “Town Planning in Practice,” published in 1909, and “Nothing Gained from Overcrowding,” published in 1912. Then a morphological urban analysis of Letchworth Garden City and Brentham Garden Suburb, considered the first examples of each movement, is conducted. In order to analyze the transfer process, the study adopts M. Volait and J. Nasr’s theory on transporting planning, through investigating the authority in power responsible for the establishment of these suburban developments. This is followed by the morphological urban analysis of three suburban developments around Cairo, namely, Zamālik, Ma‘ādī, and Heliopolis. The morphological analysis focuses on the background of their establishment, authority in power responsible for the development, design principles, urban context, street typology, residential block typology, social infrastructure, and social target group.
Finally, the study compares between Brentham, Letchworth, Zamālik, Ma‘ādī, and Heliopolis. The comparative analysis aims to highlight the differences between the studied cases of Cairo and how they are different from or alike the British movements. This study concludes that the suburban developments around Cairo during the British occupation, are in fact garden suburbs, despite that some are being described or labeled as garden city. This movement was exported via urban land development companies with foreign European capital, rather than via colonial dominance. It finally highlights a set of urban design aspects that distinguish them as garden suburbs of Cairo. This study hopes to support future conservation plan of these areas and the design of future suburban developments.
Ein aktuelles Thema in der Forschung der Betonindustrie ist die gezielte Steuerung des Erstarrens und der Entwicklung der (Früh)Festigkeit von Betonen und Mörteln. Aus ökonomischer Sicht sind außerdem die Reduktion der CO2-Emission und die Schonung von Ressourcen und Energie wichtige Forschungsschwerpunkte. Eine Möglichkeit zum Erreichen dieser Ziele ist es, die Reaktivität/Hydratation der silikatischen Klinkerphasen gezielt anzuregen. Neben den bereits bekannten Möglichkeiten der Hydratationsbeschleunigung (u.a. Wärmebehandlung, Zugabe von Salzen) bietet die Anwendung von Power-Ultraschall (PUS) eine weitere Alternative zur Beschleunigung der Zementhydratation. Da bis zum jetzigen Zeitpunkt noch keine Erfahrungen zum Einsatz von PUS in der Zementchemie vorliegen, sollen mit der vorliegenden Arbeit grundlegende Kenntnisse zum Einfluss von PUS auf das Fließ- und Erstarrungsverhalten von Zementsuspensionen erarbeitet werden.
Dazu wurde die Arbeit in fünf Hauptuntersuchungsabschnitte aufgeteilt.
Im ersten Teil wurden optimale PUS-Parameter wie Amplitude und Energieeintrag ermittelt, die eine effiziente Beschleunigung der Portlandzement(CEM I)hydratation bei kurzen Beschallzeiten und begrenzter Zementleimtemperaturerhöhung erlauben. Mit Hilfe unabhängiger Untersuchungsmethoden (Bestimmung des Erstarrungsbeginns, der Festigkeitsentwicklung, zerstörungsfreier Ultraschallprüfung, isothermer Wärmeflusskalorimetrie, hochauflösender Rasterelektronmikroskopie (REM) wurde die Wirkung von PUS auf den Hydratationsverlauf von CEM I-Suspensionen charakterisiert. Die Ergebnisse zeigen, dass die Behandlung von CEM I-Suspensionen mit PUS grundsätzlich ein beschleunigtes Erstarren und eine beschleunigte (Früh)Festigkeitsentwicklung hervorruft.
Anhand von REM-Untersuchungen konnte eindeutig nachgewiesen werden, dass die Beschleunigung der CEM I-Hydratation mit einer beschleunigten Hydratation der Hauptklinkerphase Alit korreliert. Auf Grundlage dieser Erkenntnisse wurden die Ursachen der Aktivierung der Alithydratation untersucht. Dazu wurden Untersuchungen an Einzelsystemen des CEM I (silikatische Klinkerphase) durchgeführt.
Es ist bekannt, das die Hydratation der Hauptklinkerphase Alit (in der reinen Form Tricalciumsilikat 3CaO*SiO2; C3S) durch Lösungs-/Fällungsreaktionen (Bildung von Calcium-Silikat-Hydrat Phasen, C-S-H Phasen) bestimmt wird. Mit Hilfe von Untersuchungen zur Auflösung (C3S) und Kristallbildung (C-S-H Phasen) in Lösungen und Suspensionen (Aufzeichnung der elektrischen Leitfähigkeit sowie Bestimmung der Ionenkonzentrationen der wässrigen Phase, REM-Charakterisierung der Präzipitate) wurde die Beeinflussung dieser durch eine PUS-Behandlung charakterisiert. Die Ergebnisse zeigen, dass in partikelfreien Lösungen (primäre Keimbildung) eine PUS-Behandlung keinen Einfluss auf die Kinetik der Kristallisation von C-S-H Phasen hervorruft. Das heißt, auch die durch PUS eingetragene Energie reicht offensichtlich nicht aus, um in Abwesenheit von Oberflächen die C-S-H Phasen Bildung zu beschleunigen. Das weist darauf hin, dass die Bildung von C-S-H Phasen nicht durch eine Beschleunigung von Ionen in der Lösung (erhöhte Diffusion durch Anwendung von PUS) hervorgerufen wird. Eine Beschleunigung des Kristallisationsprozesses (Keimbildung und Wachstum von C-S-H Phasen) durch PUS wird nur in Anwesenheit von Partikeln in der Lösung (Suspension) erzielt. Das belegen Ergebnisse, bei denen die Bildung erster C-S-H Phasen bei geringer Übersättigung (heterogene Keimbildung, in Anwesenheit von Oberflächen) erfolgt. Unter diesen Bedingungen konnte gezeigt werden, dass PUS innerhalb der ersten 30 Minuten der Hydratation eine erhöhte Fällung von ersten C-S-H Phasen bewirkt. Diese fungieren dann vermutlich während der Haupthydratation als Keim bzw. geeignete Oberfläche zum beschleunigten Aufwachsen von weiteren C-S-H Phasen. Weiterhin ist vorstellbar, dass (in Analogie zu anderen Bereichen der Sonochemie) PUS durch Kavitation Schockwellen hervorruft, welche Partikel und wässriges Medium beschleunigen und damit erhöhte Partikelbewegungen und -kollisionen induziert. Dies wiederum bewirkt, dass die anfänglich auf der C3S-Oberfläche gebildeten C-S-H Phasen teilweise wieder entfernt werden. Damit ist das Inlösunggehen von Ca- und Si-Ionen aus dem C3S weiterhin möglich. Um den genauen Mechanismus weiter zu charakterisieren sollten mit geeigneten Methoden weitere Untersuchungen durchgeführt werden.
Im zweiten Teil der Arbeit wurde der Einfluss von PUS auf das Fließverhalten von CEM I-Suspensionen untersucht. Aus der Anwendung von PUS in anderen technischen Bereichen sind unter anderem Effekte wie das Entlüften, das Homogenisieren und das Dispergieren von Suspensionen und Emulsionen mittels PUS bekannt. Mit Hilfe der Bestimmung des Luftporengehaltes, Sedimentationsversuchen und cryo-SEM Untersuchungen wurde der Einfluss von PUS auf CEM I-Suspensionen charakterisiert. Die Ergebnisse belegen, dass durch PUS eine verbesserte Homogenität und Dispergierung der CEM I-Suspension erzielt wird. Damit wird für CEM I-Suspensionen unterschiedlichster w/z-Werte eine verbesserte Fließfähigkeit festgestellt. Ergebnisse der Bestimmung von Ausbreitmaßen und Trichterauslaufzeiten zeigen, dass PUS einen direkten Einfluss vor allem auf die Viskosität der CEM I-Suspensionen besitzt. Werden Fließmitteln (FM) der CEM I-Suspension zugegeben, wird nicht in jedem Fall eine verbesserte Fließfähigkeit festgestellt. Hier scheint unter bestimmten Voraussetzungen (w/z-Wert, FM-Gehalt, PUS) die Reaktion zwischen Aluminat- und Sulfatphase des Klinkers gestört. Zur eindeutigen Klärung dieses Sachverhaltes bedarf es jedoch weiterer quantitativer Untersuchungen zum Reaktionsumsatz.
Im dritten Teil der Arbeit wurden die am CEM I gewonnenen Erkenntnisse zum Einfluss von PUS auf die Hydratation an Portland-Hüttensand(HÜS)-Zement-Systemen verifiziert. Dafür
wurden auch in diesem Teil der Arbeit zunächst die optimalen PUS-Parameter festgelegt und der Einfluss auf das Erstarrung- und Erhärtungsverhalten dokumentiert. Untersuchungsmethoden sind unter anderem die Bestimmung des Erstarrungsbeginns und der (Früh)Festigkeitsentwicklung, Temperaturaufzeichnungen und isothermale Wärmeflusskalorimetrie sowie REM. Die Ergebnisse zeigen, dass auch die Reaktion von HÜS-Zementen durch PUS beschleunigt wird. Weiterführende Untersuchungen belegen, dass die erzielte Beschleunigung vorwiegend auf der Beschleunigung der Alitkomponente des CEM I beruht.
Im Fokus der Teile vier und fünf dieser Arbeit stand die Anwendbarkeit der PUS-Technik unter praktischen Bedingungen. Zum einen wurde die Anwendbarkeit von PUS in fertig gemischten Mörteln beurteilt. Anhand des Vergleichs wichtiger Frisch- und Festmörteleigenschaften unterschiedlich hergestellter Mörtel (beschallt im Anschluss an konventionelle Mischtechnik, beschallt im Anschluss an Suspensionsmischtechnik mit anschließender Zumischung der Gesteinskörnung und nicht beschallt) wird gezeigt, dass im Fall von Mörteln mit hohem Leimanteil eine durch PUS induzierte beschleunigte Festigkeitsentwicklung auch mit herkömmlichen Mischabläufen (ohne aufwendige Umstellung des Mischprozesses) möglich ist.
Abschließend wird untersucht, ob der Herstellungsprozess von Wandbauteilen im Fertigteilwerk durch den Einsatz von PUS optimiert werden kann und ob eine Einbindung der PUS-Technik in den Fertigungsprozess ohne größeren Aufwand möglich ist. Dazu wurden in einem ersten Schritt die Frisch- und Festbetoneigenschaften eines aktuell angewendeten selbstverdichtenden Betons im Labormaßstab (Mörtel) in Abhängigkeit einer PUS-Behandlung dokumentiert und mit der seiner unbeschallten Referenz verglichen. Aufgrund der durch PUS verursachten verbesserten Fließ- und Festigkeitseigenschaften kann die beschallte Mörtelrezeptur hinsichtlich Fließmittelgehalt und Dauer der Wärmebehandlung optimiert werden. Somit werden ca. 30 % der Fließmittelzugabe und 40 % der Dauer der Wärmebehandlung eigespart. Eine Einbindung der PUS-Technik in das betrachtete Fertigteilwerk ist nach Überprüfung der konstruktiven Gegebenheiten der Fertigungsstrukturen ohne größeren Aufwand möglich.
The conservation of living heritage sites is a highly complex process. Two factors need careful consideration in order to achieve a balance in the management of such sites: the conservation demands of conservation experts for built heritage and the needs of local people for development of their heritage living space. The complexity of factors involved make for an interesting study of living heritage, taken up by this research in its main case study of the town of Nan in Thailand.
Research into the historical background of Nan and its cultural heritage reveals a living heritage site, which is both unique and diverse. Present day Nan was examined using a variety of analysis tools, which were applied to data from interviews, empirical data, field surveys, and documents, in order to better understand the nature of the living heritage site and changing trends over time. Luang Prabang in Lao PDR, a World Heritage site since 1995, was also selected as a further case study with which to compare Nan’s potential World Heritage status from a point of view of changes to living heritage attributes.
The outcomes of the research indicate the importance of the management of the sites, which can be at risk of losing balance by focusing on one aspect of heritage to the detriment of the other. The conservation perspective, if allowed to dominate, as in Luang Prabang, can cause irreparable damage to the social fabric, where the development needs of the town are not met. This research concludes that a balance of power amongst stakeholders in the collaborative networks managing such sites is vital to sustaining a balance of living heritage attributes.
Space is a social product and a social producer. The main aim of this thesis is to reveal ‘the process of totalitarian city making in Pyongyang’, especially in the light of the interaction between the power and urban space.
The totalitarian city of Pyongyang was born out of modernization in the process of masses formation. During the growth of colonial capitalism and Christian liberal ideas, Pyongyang was modernized and displayed the characteristics of a modern city with industrialization and urbanization. During the introduction of Japanese colonial capitalism, peasants, women, and slaves became the first masses and urban poor, and they later transformed into the mob; their violence was finally demonstrated during the Anti-Chinese Riot.
After the 1945 independence, Kim’s regime formed the one-party state with a cry for revolution. They produced an atmosphere of imminent war to instill fear and hatred into the psyche of Pyongyang citizens. The regime eliminated all political opponents in 1967 and finally declared the totalitarian ideology in 1974. During this process, Pyongyang demonstrated two main characteristics of a totalitarian city: the space of terror and of ideology. The space of terror produces the fear of death and the space of ideology controls the thought and life of citizens.
After entry to the market, to keep Kim’s controlling power, the regime used the strategy of location exchange. The camp, market, and Foreign Currency Shop were effective tools to prepare for executives’ gifts. However, the market also produces the desire not only for consumption but also for freedom and truth; it is tearing down the foundation of the totalitarian city of Pyongyang.
This research focuses primarily on the interaction between political power and urban space. In the process of making a totalitarian city, the power produced urban space and it influenced the psyche of Pyongyang citizens. Even though this spatial transition has created the totalitarian city and helped maintain political power, it also led and produced intended or unintended social variation in Pyongyang society.
This research addresses the discourse of tourism as a tool for place-making of urban destination. Relevant to the study of place-making is the analysis of the commoditization and localization process dependent upon the appropriation of urban landscape and local cultures. In the research, localization is interpreted as the act of determining the attributes of locality, while commoditization is defined as the process by which local attributes that have commercial potential end up in becoming tourism commodity. Following this, the commoditization of intrinsic cultural value is disseminated within a branding strategy and intervention reflecting social and political relations. Therefore, the research suggests that tourism place-making has not only been constructed through the top-down regulatory body, but has been also generated through the attributes of its locality. By utilizing the critical and constructivist paradigm, the research depicts the conditions of the localization and commoditization process in establishing the base line of its realization within the symbolic economy. Thus, a qualitative case study approach was adopted. The study area of this dissertation is Palembang, as one of the capital cities in Indonesia advancing in its overall urban development. To investigate urban tourism as a tool for development strategy, it is useful to investigate the role of tourism which embodies (1) spatial transformation; how tourism gives significant impacts on urban form, and (2) the socio-cultural aspect; how neighbourhood is related to tourism industry. The findings suggest that tourism place-making involves the reciprocity of urban dynamics: cities take on tourism as a reference model of development, and tourist areas adopt the proliferation of cultural lifestyle to meet the industry’s demands.
The objective of this thesis was to understand the 20th-century history of informal urbanisation in Europe and its origins in Madrid and Paris. The concept of informal urbanisation was employed to refer to the process of developing shacks and precarious single-family housing areas that were not planned by the public powers and were considered to be substandard because of their below-average materials and social characteristics. Our main hypothesis was that despite being a phenomenon with ancient roots, informal urbanisation emerged as a public problem and was subsequently prohibited in connection with another historical process occurred: the birth of contemporary urban planning. Therefore, its transformation into a deviant and illegal urban growth mechanism would have been a pan-European process occurring at the same pace that urban planning developed during the first decades of the 20th century.
Analysing the 20th-century history of informal urbanisation in Europe was an ambitious task that required using a large number of sources. To contend with this issue, this thesis combined two main methods: historiographical research about informal urbanisation in Europe and archival research of two case studies, Madrid and Paris, to make the account more precise by analysing primary sources of the subject.
Our research of these informal areas, which were produced mainly through poor private allotments and housing developed on land squats, revealed two key moments of explosive growth across Europe: the 1920s and 1960s. The near disappearance of informal urbanisation throughout the continent seemed to be a consequence not of the historical development of urban planning—which was commonly transgressed and bypassed—but of the exacerbation of global economic inequalities, permitting the development of a geography of privilege in Europe.
Concerning the cases of Paris and Madrid, the origins of informal urbanisation—that is, the moment the issue started to be problematised—seemed to occur in the second half of the 19th century, when a number of hygienic norms and surveillance devices began to control housing characteristics. From that moment onwards, informal urbanisation areas formed peripheral belts in both cities. This growth became the object of an illegalisation process of which we have identified three phases: (i) the unregulated development of the phenomenon during the second half of the 20th century, (ii) the institutional production of “exception regulations” to permit a controlled development of substandard housing in the peripheral fringes of both cities, and (iii) the synchronic prohibition of informal urbanisation in the 1920s and its illegal reproduction.
There is a continuous exacerbation of environmental problems in big cities of today’s world, thereby, diminishing the quality of life in them. Of particular concern is the fact that today’s megacities are evolving in the developing world without corresponding growth in the economy, infrastructure and other human development indices. As urban population continues to grow in these cities of the Global South, governing institutions are usually unable to keep pace with their social responsibilities, thus, making the issue of urban governance very critical. This is because effective and efficient urban governance is highly essential for the creation, strengthening and sustenance of governing institutions.
Lagos, a mega-city of over 15.45 million people and the most populous metropolitan area on the African continent epitomizes the fundamental grave characteristics of the emerging megacities of the Global South, thereby, constituting an apt choice in understanding the emerging megacities of the next generation. Two out of every three Lagos residents live in slums and de-humanizing physical and social conditions. Many of them sleep, work, eat and cook under highway bridges, at the mercy of weather elements.
This research, therefore, evaluated urban governance through housing administration in Africa’s largest megacity. It examines the extent of housing problems in the city, the causal factors and the culpability of government agencies statutorily responsible for the provision, control and management of housing development in Lagos - the tenth largest city in the world. A representative geographic part of the city which manifests classic characteristics of slum life, listed by Mike Davis as the largest slum in Africa and the 6th largest in the world – Ajegunle - was adopted for case study. The research design combined rigorous literature search (desk research) with quantitative and, especially, qualitative approaches to data collection. The qualitative approach was more intensely adopted because government officials often respond to enquiries with ‘official answers and data’ which may not be reliable and the study had to rely on keen observation of physical traces, social interaction and personal investigation. The cross-sectional research method was adopted. Information was solicited from house-owners, building industry professionals, sociologists and officials of relevant government agencies, through research tools like questionnaires, interviews, focused group discussions and personal observations.
The analysis and discussion of these field data, in conjunction with the information from the desk research gave a better understanding of the status-quo, which informed the recommendations proposed in the dissertation for mitigating the problems. The research discovered that many of the statutory housing agencies have the capacity to effectively discharge their responsibilities. However, it was also shown that corruption and abdication of responsibilities by the staff of these agencies constitute primary causes of the chasm between the anticipated lofty outcome from the laudable building regulations/bye-laws and the appalling reality. It also discovered that lack of political will and apathy on the part of successive Governments of Lagos State to the improvement of housing conditions of the poor masses are major causes of the housing debacle in Lagos.
Several germane and realistic recommendations for redressing the situation were subsequently proffered. These include amongst others, the conduction of an accurate census for Lagos, in conjunction with credible international agencies, as a requisite basis for effective planning of any sort. The process of obtaining legal titles for land should also be made less cumbersome, while the housing administration process should be computerized; in order to reduce inter-personal contacts between applicants and government officials to the barest minimum, as a means of curbing the wide spread corruption in the system.
This is a work concerned with the increasing processes of social exclusion in cities nowadays. In approaching this phenomenon, the research highlights how people interact with their institutional environments. This is also, perhaps centrally, an investigation into the possibility to engage an individual perspective to understand the transformation in urban experience, which is orienting society to new uses and forms of exclusion. Following the perspective deployed by the so-called “sociology of individuals” in French sociology or “reengagement of agency” in the Anglo-Saxon world; I claim that individuals as well as collectives are gaining increasing power to question and re-organize institutions. This re-organization, in the case of socio-urban institutions, is no guarantee for major levels in integration, cohesion, and equality. Unfortunately, social institutions are becoming hard in its exclusionary capabilities under people intervention during the last four decades.
I believe that urban sociology is a field of struggle between different perspectives competing to “make sense” of social phenomena in cities. The orientation supported in this research is just one on many and it follows the roots of people and their life experiences within cities and how they influence the processes that shape the city. The last formulation is possibly not the clearest, because as we all know, references to “inhabitants” are presented in every variant of urban sociology. Nevertheless, there are not many variants focusing on peoples’ capability to influence institutional environments and by this way affecting the urban condition in which they find themselves. The particular institution selected for this study is the “School”.
This thesis is organized around two parts: part one includes the conceptual framework, methodological approach, and historical contextualization; part two describes three case studies produced to analyse the forms of and the relations between individuals and school institution. Part one starts from a premise: within the context of declining welfare State in the case of industrialized countries, an important part of urban studies focuses on economic and spatial restructuration. Confronted with the same situation, a part of social sciences shifts to the individuals’ agency and social uncertainty. This research is embedded in the last theoretical description presented above, thus, because it tries to observe urban processes from the perspective of the individual and outside of developed economies. In this sense, Latin America represents a fundamental reference because urban conditions are historically marked by weak institutional arrangements to integrating people and large levels of marginality and exclusion among population. In this scenario individuals’ practices around inclusion-exclusion have an essential meaning in everyday life.
Part two offers three study cases in which the relation between individuals and school institutions has been analyzed for the Metropolitan area of Santiago de Chile (MAS). Using different methodological resources an exhaustive account on three levels is presented: i) geo-referencing State intervention in public policies connected with neighborhood and schools to understand the form and extent of socio-urban exclusion in MAS, ii) narrative biographies applied to parents with children attending primary school, in order to reconstruct the familiar process of school selection and describing its impacts on the stabilization of school as an exclusionary device, and iii) autoethnography to describe in detail the temporal dimension involved in stabilizing actions which reinforces social mechanisms of urban integration-exclusion during the last three decades in Chile.
A key argument advanced by this research proposes that: the way in which the idea of integration is enacted by people in their biographical careers imprints changes on the institutional orientation and by this way, contributes to the reorganization urban life. The high level of social exclusion in Santiago de Chile is not accountable without considering transformation in all socio-urban institutions, especially the school. No family considers social integration with people from a low social, economical or cultural background as relevant orientation for school selection. This particularity of the Chilean social reality is not derivable from any big capitalistic or modernization processes impacting our cities.
Within the light of the thesis findings, I conclude that socio-urban institutions logics must be reassessment under the influences of people actions and representations. I also propose a consideration to major complementarities between urban studies and urban-institutions analysis. The school institutions is not just a sectorial field reserved to the researcher in education, on the contrary, it represent a key entrance to address people’s experience in their institutional urban environments. The re-emergence of social and urban movements in 2010, under the “Arab Spring” or the “Chilean Student Movements”, is not only a demonstration in the public space as result of major global trends. These situations are in essence, for this research, individuals gathering together and calling for recognition and autonomy inside institutional environment that tends to reject them. Similar situation was the focus of the Latin American urban sociology research, within the focus on grassroots and urban social movements at the end of the 1960s and beginning of the 1970s.
In both cases, socio-urban institutions, unaware of recognition requirements claimed by inhabitants, are not beyond individual or collective reach. My main concern is to show that socio-urban institutions are constantly re-shaped as a result of individual action, what makes the difference, is the spirit that we all, socially, imprint on the logics of our socio-urban institutions, moving them to inclusion or exclusion.
The thesis concerns a work of urban history intended not to describe the city but rather to interpret it. By doing so, I have interpreted the city by means of the role played by the so-called ‘great property’ in the European city-making process during the last three decades of the 20th century, specifically focused on the concrete case of military properties in Italy. I have also considered the role played by other kinds of great properties, i.e. industries and railway, which previously acted in the production of the built environment in a different way respect to the military one. As all of them have as common denominator the fact of being ‘capital in land’, I analysed great industrial and railway properties in order to extrapolate a methodology which helped me to interpret the relationship between military properties and city-making process in Europe in the late 20th century.
I have analysed the relationship between the capital in land and the city-making process on the ground of the understanding the interrelation between the great property, the urban development, and the agents involved in the urban and territorial planning. Here I have showed that urban planning is not the decisive factor influencing the citymaking process, but instead the power held by the capital in land. I have found that is the great property the trigger of the creation of new ‘areas of centrality’ intended as large areas for consumerism. As far as the role played by great property is concerned, I have also discovered that it has evolved over time. Originally, industrial and railway properties have been regenerated into a wide range of new profit-driven spaces; successively, I have found out that most of the regeneration of military premises aimed to materialise areas of centrality. The way of interpreting this factor has been based on focusing my attention on the military premises in Italy: I have classified their typology when they have been built and, most importantly, when they have been regenerated into new areas of centrality.
One of the main focuses of recent Chinese urban development is the creation and retrofitting of public spaces driven by the market force and demand. However, researches concerning human and cultural influences on shaping public spaces have been scanty. There still exist many undefined ambiguous planning aspects institutionally and legislatively. This is an explanatory research to address interactions, incorporations and interrelationship between the lived environment and its peoples. It is knowledge-seeking and normative. Theoretically, public space in a Chinese context is conceptualized; empirically, a selected case is inquired. The research has unfolded a comparatively complete understanding of China’s planning evolution and on-going practices. Data collection emphasizes the concept of ‘people’ and ‘space’. First-hand data is derived from the intensive fieldwork and observatory and participatory documentations. The ample detailed authentic empirical data empowers space syntax as a strong analysis tool in decoding how human’s activities influence the public space. Findings fall into two categories but interdependent. Firstly, it discloses the studied settlement as a generic, organic and incremental development model. Its growth and established environment is evolutionary and incremental, based on its intrinsic traditions, life values and available resources. As a self-sustaining settlement, it highlights certain vernacular traits of spatial development out of lifestyles and cultural practices. Its spatial articulation appears as a process parallel to socio-economic transitions. Secondly, crucial planning aspects are theoretically summarized to address the existing gap between current planning methodology and practicalities. It pinpoints several most significant and particular issues, namely, disintegrated land use system and urban planning; missing of urban design in the planning system, loss of a human-responsive environment resulted from standardized planning and under-estimation of heritage in urban development. The research challenges present Chinese planning laws and regulations through urban public space study; and pinpoints to yield certain growth leverage for planning and development. Thus, planning is able to empower inhabitants to make decisions along the process of shaping and sustaining their space. Therefore, it discusses not only legislative issues, concerning land use planning, urban design and heritage conservation. It leads to a pivotal proposal, i.e., the integration of human and their social spaces in formulating a new spatial strategy. It expects to inform policymakers of underpinning social values and cultural practices in reconfiguring postmodern Chinese spatiality. It propounds that social context endemic to communities shall be integrated as a crucial tool in spatial strategy design, hence to strengthen spatial attributes and improve life quality.
Abstract
In this research, based on socio-spatiality as the starting point, it has conducted extensive city space analysis to advance a new urban social space theory. Resting upon the basis of traditional continent philosophy, this social space theory has adopted the structuration methods, at the same time trying to build certain combination between theoretical frame work establishment and empirical observations. Therefore, the socio-spatial transition study is neither a macro theory of traditional structuralism nor a typology of urban planning theory, or a positivism social geography, but an operative theory on practical purpose. Firstly, what’s distinct from the traditional structuralism is that this study examines the endless transiting structural relations, not macroscopic narrations of absolute definition and structure. In fact, any city and space are always co-existed in their structurational transiting relationship, thus research in transition has become the main body of this study. And case study is a must for research in transition, as part of efforts to apply the structuration concept into practice reason. Secondly, this study first establishes the fundamental structuration concept of socio-spatial transition, which, as an operative tool, is applied to conduct transition analysis on specific case about the City of Beijing. Therefore, as a social space theory, referring to as science, remains criticism of traditional continent philosophy. However, this criticism did not working on the level of ideology or conceptions, but on transiting under structural relations, keeping it from incompetent ideology criticism of continental critical theory. Unfortunately contemporary urban and space development have now gone extremely unbalanced under a background of globalization; yet traditional macro theories are incapable of either producing significant impact on practice or helping people identify practical problems. While facing general issues, particularly the Chinese urban issue category established on a meta-structured city mode, the micro-case study has plunged into dilemma for unknowing either to ask questions or to answer questions. Therefore, this study is set to identify dilemma and find direction for future relevant research. In this dissertation, Beijing is used as a model, and structuration methods as tools. It has extensively analyzed the social-spatial transition of the city space of Beijing, acquiring brand-new knowledge of its urban space development. It is helpful to an in-depth understanding of the city space development not only in Beijing, but also in many other cities that were influenced by the capital model of Beijing. Since the start of reform and opening-up, China has created a unique development mode of the new-styled metropolitan and urbanization in history. This research is expected to analyze or decode what China’s urban development in between communal space and associative space.
This thesis examines urban partition in Nicosia, the capital of Cyprus, and how its changing roles and shifting perceptions in a post-conflict setting reflect power relations, and their constant renegotiation. Nicosia, the capital of Cyprus, was officially divided in 1974 in the aftermath of an eighteen-year-long conflict between the island’s Turkish- and Greek-Cypriot communities. As a result, a heavily militarized Buffer Zone, established as an emergency measure against perpetuation of intercommunal violence, has been cutting through its historic centre ever since.
This thesis departs from a genuine interest in the material and ideational dimensions of urban partition. How is it constructed, not merely in physical terms but in the minds of the societies affected by conflict? How is it established in official and everyday discourses? What kinds of mechanisms have been developed to maintain it, and make an inseparable part of the urban experience? Moreover, taking into account the consensus in relevant literature pertaining to the imperative for its removal, this thesis is inquiring into the relevance of peace agreements to overcoming urban partition. For this purpose, it also looks at narratives and practices that have attempted to contest it.
The examples examined in this thesis offer pregnant analytical moments to understand Nicosia’s Buffer Zone as a dynamic social construct, accommodating multiple visions of and for the city. Its space ‘in-between’ facilitates encounters between various actors, accommodates new meanings, socio-spatial practices and diverse imaginaries. In this sense, urban partition is explored in this thesis as a phenomenon that transcends scales as well as temporalities, entwining past, present, and future.
Settlement is human place to live and do various activities (Finch, 1980). Concept of settlement layout is closely associated with human and a set of thoughts and behaviors. In this case, idea of pattern of activities in a society that is core of a culture becomes main factor in process of formation of houses and environment in a settlement. Factors which affecting form (physical) of architecture in a settlement environment are socio-cultural, economic, and religious determinant factor that manifested architectural realization (Rapoport, 1969).
Yogyakarta as the continuation of kingdom city in the Java Island finally exists as an Islamic kingdom that still remain to survive up to now. Impacts of this issue is appearance of various Moslem settlements to support typical character of an Islamic Kingdom.
Mlangi is an area of oldest Moslem settlements in Yogyakarta has not been explored in details for progress especially in physical glasses recently. Everything basic group and individual who arrange houses and residences, starts from how it has spatial concept alone. Although concept is a very abstract thing to explain in details, but its existence can be detected by how they created their physical environment.
This research conducted by these research questions: (1) What are spatial concepts owned by people in Mlangi and (2) How do spatial concepts owned by the people affect the settlements pattern?
Process to search spatial concept owned by the people in Moslem residence, making Mlangi as study area, was approached by using phenomenological research method. The researcher have to self-involved directly in unstructured interviews, but remained in guideline framework of in interviews to make research process effective. Fistly, the researcher interviewed the key person, they are the head of Mlangi administration (pak Dukuh) in Mlangi and Sawahan. They were then give advices to who was capable person that could draw the spatial concept and had many story and knew the history of the settlements. Step by step of interview guided from one informant to next informant when the information had been told repeatedly. The next informant based on the last informant advice or who had close relationship with the last theme appeared. To complete the narration and draw the result of interview, researcher have to add additional information with photograph and descriptive picture that can be draw the settlement empirically.
In process, 17 information units which found in field were consistent with sequence of interview events and flowing of theme to theme associated with Moslem residence of residence. Finally the interviews succeeded in abstracting 16 themes that may be classified into historic, socio-cultural, and spatial-concept dimensions in Mlangi. Process of analysis to find spatial concept owned by the people in Moslem settlements was carried out by dialogue of themes to find available substantive relationship.
Four concepts successfully analyzed consist of concepts of personage, concept of religious implementation, concept of Jero-Jaba and concept of Interest. The four concepts are really associated with one and others in understanding how spatial concept owned by the people affects residence they occupy. Yet, concept of Jero-Jaba bases all concepts of people in Mlangi . This concept can be used to draw red yarn on how they utilize communal spaces in residence and layout rooms of their individual houses. This concept also eternalize residence patterns existing in Mlangi now where residence does not experience many changes from starting of this residence existence (from detection of generation currently still living), namely residence patterns concentrate on orientation to Masjid Pathok Negoro of Mlangi.
This research was opening the potential research area, at least for the sociology, anthropology and demography research interest. So many unique character in Mlangi if looked at from how they maintain their spatial concept and manifested in their daily activities. How the people will concern only for the religious activities and the economic concern only for survival aspect in live.
Keywords: spatial concept, moslem settlements, phenomenology method, Indonesia,