„Stuttgart 21“ im Spiegel von Facebook-Aktivitäten der Befärworter und der Gegner des Projektes

Maier, Tim

doi:10.1007/978-3-658-01380-6_1

Cited by 5 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…26 Therefore during thermal expansion under inert atmosphere, the SiSiC layers as well as the C/C blocks in transverse direction expand faster and more than the C/C blocks in longitudinal direction. 16 This is confirmed by Wanner et al who observed increase in flexural modulus and closure of microcracks in bidirectional carbon/carbon composites inside C/C-blocks along the temperature.…”

Section: C/c-sic Sample ρ [G/cm 3 ]supporting

confidence: 66%

“…4,5 This measurement technique is based on the treatment of the resulting acoustic signal after mechanical excitation of the sample with the help of a light mechanical impulse. At high temperatures the mechanical tests must be performed in inert atmosphere in order to prevent oxidation 16 Some typical flexural properties of C/C-SiC materials are given in. Therefore, RFDA turns out to be a beneficial experimental procedure as both, room temperature and high temperature measurements can be performed under specific atmospheric conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, RFDA turns out to be a beneficial experimental procedure as both, room temperature and high temperature measurements can be performed under specific atmospheric conditions. 8,16,[19][20][21] Different to quasi-static mechanical testing the RFDA method by IMCE (Integrated Material Control Engineering, Belgium) applied at the Institute of Mineral Engineering of the RWTH Aachen is of great advantage for analyzing the flexural modulus at high temperatures. Their lower density compared to metallic alloy used for high temperature application is also a key advantage.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of dynamic modulus measurement for C/C‐SiC composites at different temperatures

Hönig

Koch

Weber³

et al. 2019

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

The determination of elastic properties at application temperature is fundamental for the design of fibre reinforced ceramic composite components. An attractive method to characterize the flexural modulus at room and high temperature under specific atmosphere is the nondestructive Resonant Frequency Damping Analysis (RFDA). The objective of this paper was to evaluate and validate the modulus measurement via RFDA for orthotropic C/C‐SiC composites at the application temperature. At room temperature flexural moduli of C/C‐SiC with 0/90° reinforcement were measured under quasi‐static 4‐point bending loads and compared with dynamic moduli measured via RFDA longitudinally to fibre direction. The dynamic modulus of C/C‐SiC was then measured via RFDA up to 1250°C under flowing inert gas and showed an increase with temperature which fitted with literature values. The measured fundamental frequencies were finally compared to those resulting from numerical modal analyses. Dynamic and quasi‐static flexural moduli are comparable and the numerical analyses proved that bending modes are correctly modeled by means of dynamic modulus measured via RFDA. The nondestructive RFDA as well as the numerical modeling approach are suitable for evaluation of C/C‐SiC and may be transferred to other fibre reinforced ceramic composite materials.

show abstract

Section: C/c-sic Sample ρ [G/cm 3 ]supporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of dynamic modulus measurement for C/C‐SiC composites at different temperatures

Hönig

Koch

Weber³

et al. 2019

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

show abstract

“…Urban transport planning is ‘inherently political’, with priority settings and decisions on huge investments that serve some groups better than others (Legacy, 2016: 3108). Studies of S21 scrutinise the emphasis on justice sensitivity (Rothmund et al, 2014), the use of Twitter for the organisation of collective action (Jungherr and Jürgens, 2014), Facebook activities of proponents and opponents (Maier, 2013), voting behaviours and the NIMBY effect (cf. Vatter and Heidelberger, 2013).…”

Section: Brief History Of Stuttgart 21mentioning

confidence: 99%

Protesting iconic megaprojects. A discourse network analysis of the evolution of the conflict over Stuttgart 21

Nagel¹,

Satoh²

2018

Urban Studies

View full text Add to dashboard Cite

The past decades witnessed enormous transformations in the built environment of cities, and one of these trends is the development of iconic megaprojects. Public protests against these projects occur frequently, and scholars in urban governance have diagnosed this as an emerging 'postpolitical' condition, that is, as a sign of a deficient democratic politics. Others criticise this kind of reasoning as a 'post-political-trap' (Beveridge and Koch, 2017), and demand more research. This article responds to this debate with an empirical study of the popular protests against the infrastructural public transport project Stuttgart 21 in Germany. We apply discourse network analysis to investigate the evolution of the discourse, illuminate multiple dynamic connections between issues and actors, and apply factor analysis to identify the key issues of the conflict. Our study complicates and qualifies the arguments for a 'post-political' state of urban politics.

show abstract

“…Gründe hierfür sind die Komplexität der Sachverhalte und die selbstgewählte, nur fachspezifische Kommunikation der Raumplanung. Gleichwohl haben punktuell in den letzten Jahren einige Planungsverfahren große mediale Resonanz erfahren, wie beispielsweise die Live-Berichterstattung des Mediationsverfahrens Stuttgart 21 im Phoenix-TV 2010(Brettschneider/Schuster 2013Maier 2013;Stuckenbrock 2013), oder die häufige Darstellung des pannenreichen Projekts Flughafen Berlin-Brandenburg, das sich zum medialen Symbol struktureller Politikdefizite entwickelt hat.…”

Section: Introductionunclassified

Die Dritte und die Vierte Gewalt in Raumplanungsprozessen

Diller

2018

RuR

View full text Add to dashboard Cite

ZusammenfassungAuch wenn institutionalisierte Medien und rechtsprechende Justiz zu den Akteuren der Raumplanung gezählt werden können, so ist dennoch in der Raumplanungsforschung sowohl national als auch international nur wenig darüber bekannt, welche Rolle sie in Raumplanungsprozessen im Vergleich zu Akteuren aus Politik, Verwaltung, Zivilgesellschaft und Wirtschaft spielen. Ob und inwieweit beeinflussen sie konkrete Planungsentscheidungen? In anderen Politikfeldern (z. B. der Außen-und Finanzpolitik) ist dagegen vor allem der Einfluss der Medien auf politische Prozesse deutlich besser erforscht und zur Rolle der Justiz gibt es immerhin einige Befunde. Aus diesen Erkenntnissen werden in dem ausschließlich literaturbasierten Beitrag erste Hypothesen für das Politikfeld Raumplanung formuliert. Demnach variieren die Rollen der Medien und der Justiz in den einzelnen Phasen des Politikprozesses (policy cycle) derart, dass sie nahezu komplementär zueinander sind: Während die Rolle der Medien vor allem am Anfang bei der Problemformulierung und dem Agenda-Setting sehr bedeutend sein kann, um dann im weiteren politischen Prozess eher abzunehmen, hat die Justiz in Form von Rechtsprechung eher in den späteren Phasen des Politikprozesses sehr selektiven, dann aber unter Umständen maßgeblichen Einfluss. Gemeinsam können die Akteurgruppen Medien und Justiz Planungsprozesse maßgeblich prägen, daher hat auch ihre gemeinsame Betrachtung in empirischen Untersuchungen Sinn. AbstractAlthough institutionalized media and jurisdiction could be counted to the actors of spatial planning, only few is known in international and national spatial planning research about their role in spatial planning processes in relation to actors in politics, administration, civil society and economy. If and to which extend do they have an influence on planning processes? In other policy areas (e.g. foreign and finance policy) -especially the influence of the media on political processe -is quite better explored and for the role of jurisdiction there are at least some findings. Based on this knowledge in this exclusive literature-based article first hypothesises for the policy area spatial planning are formulated. Thus, the roles of media und jurisdiction are varying between the specific phases of the policy cycle in a complementing manner: While the media play an important role in the phases of problem formulation and agenda setting and loose importance in the following political process, the jurisdiction has a selective but probabely leading influence in the later phases. Together, both groups of actors in media and jurisdiction can form planning processes significantly, therefore their common analysis in empirical studies makes sense. Die Rolle von traditionellen Medien und Justiz in Raumplanungsprozessen: ein kaum erforschtes ThemaAuch wenn in den letzten Jahren der Einsatz neuer sozialer Medien 2 -und hierbei vor allem ihre Rolle bei der Partizipation in Planungsprozessen -erhebliche Aufmerksamkeit auf sich gezogen hat, so geht es hier dennoch um die...

show abstract

„Stuttgart 21“ im Spiegel von Facebook-Aktivitäten der Befärworter und der Gegner des Projektes

Cited by 5 publications

References 4 publications

Evaluation of dynamic modulus measurement for C/C‐SiC composites at different temperatures

Evaluation of dynamic modulus measurement for C/C‐SiC composites at different temperatures

Protesting iconic megaprojects. A discourse network analysis of the evolution of the conflict over Stuttgart 21

Die Dritte und die Vierte Gewalt in Raumplanungsprozessen

Contact Info

Product

Resources

About