86 research outputs found
Contesting sovereignty - making a state : Maoist mobilization in Nepal and its interrelation with local subjectivities and the state in Dang
No full textHecker FN. Contesting sovereignty - making a state : Maoist mobilization in Nepal and its interrelation with local subjectivities and the state in Dang. Bielefeld; 2012
Ethnisierung und De- Ethnisierung des Politischen. Aushandlungen um Inklusion und Exklusion im andinen und im südasiatischen Raum
No full textEthnisierung und De-Ethnisierung des Politischen. Aushandlungen um Inklusion und Exklusion im andinen und im südasiatischen Raum
No full textPfaff-Czarnecka J, Büschges C, Hecker F, Kaltmeier O. Ethnisierung und De-Ethnisierung des Politischen. Aushandlungen um Inklusion und Exklusion im andinen und im südasiatischen Raum. In: Büschges C, Pfaff-Czarnecka J, eds. Die Ethnisierung des Politischen. Identitätspolitiken in Lateinamerika, Asien und den USA. Historische Politikforschung. Vol 12. Frankfurt/New York: Campus; 2007: 19-63
Connexed information: the hyper-representation of Andrea Palladio's Villas
No full textClassical or digital representation is not just a simple mean of reproduction or imitation of reality, its enormous potential passes through complex mechanisms of interpretation, creating new possible worlds: the purpose of representation, therefore, lies in its creative potential. If we consider the planning process, at any architectural scale, it is also evident that the representation has an important role of virtual mediation, in fact, it communicates the spatial, aesthetic, material, functional and metric information: the architecture becomes reality only if it is represented. Another important function, which representation may successfully cover, is the mapping of the historical architectural heritage, which today is losing the link with its culture, in fact, even in the most intact town centre there are a lot of appearances which have altered or destroyed the original space and the system of signs; we always see all around new changed landscapes not only from a naturalistic point of view but also considering infrastructural and architectural aspects. It is not Semantics (the system of signs), which are changing, but how to read them: Media have influenced our experience of the visual world with fluid images. For all these reasons and to coordinate the vast amount of existing data, we can broaden the definition of the usual hypertext, which is seen as a combination, which changing values run free from all kind of references, the information is exchanged outside the constraints of specific locations. Sailing within a hypertext can be read as a metaphor for the dynamic and discontinuous perception of current space (architecture, city and landscape), because hypertext allows reading reality through many codes, all valid at the same time and all bringing legitimate messages – we can consider the vision of a spatial configuration not like the result of a single author, but as the sum of the individualism of each reader-authors – .
Another example of connected reading is the Augmented Reality, it combines the images of the world with computer data, creating a virtual reality in which computer graphic objects are blended into real footage in real time: in other words, AR uses live video imagery 'augmented' by the addition of computer graphics. If we refer to hypertext as an extraordinary coexistence of text, tells, documents, biographies, repertories or if we refer to the Augmented Reality in order to show and analysis of the characteristics of an actual reality, adding computer qualities; then it would be better to use an Hyper-representation to study architecture and landscape, because they are not only exterior entities. In fact, as the hypertext – the textual information arrives usually to the reader in a linear and sequential manner – is an associative and interactive link between information placed in different points of the same document, and as the Augmented Reality is an overlap of virtual and real images, then Hyper-representation of architecture, city and landscape, can be seen as a new tool not only for visualization, but also for knowledge and communication of a rapid and accurate analysis of complex data and variables. Only the Paper is inadequate for representation of all aspects of architecture and urban configurations, to which we add the dynamic space, so it is necessary to turn our attention to a 'digital organization', an Hyper-representation of a 3D model, in which one can find connections between measurements, iconographical images, historical maps, movies, synthetic reconstructions of CAD; this management allows to provide the highest level of completeness through the analysis of the available resources.
In this context, we suggest the following procedural steps:
• planning the GIS – Geographic Information System – of the space, where the studied architectural object is, verifying the real functionality;
• testing the GIS and its standards, identified by the digital formats for architecture, city and landscape;
• testing Hyper-representation as a tool to show, know and communicate data;
• defining the possible procedures to validate a digital architectural model in its landscape
Friso; Waarom niet hergebruiken?
No full textHet omvormen van de frisoloods naar een basisschoolRMITArchitectur
Kabinet, zet in op een Nationale InvesteringsAgenda
No full textOm de grote ruimtelijke opgaven waar Nederland voor staat aan te pakken, is het nodig dat rijksmiddelen gebundeld worden in een Nationale Investeringsagenda. (emeritus) hoogleraren Co Verdaas en Friso de Zeeuw vertellen waarom. "Een samenhangende aanpak is cruciaal om nationale en regionale middelen van publieke en private partijen gerichter en effectiever in te zetten," stellen zij in een voorpublicatie van de Gebiedsontwikkeling.krant die volgende week uitkomt.Practice Chair Urban Area Developmen
Een nieuwe rolverdeling: Privaat 'in the lead', publiek faciliteert
No full textWaar Friso de Zeeuw zijn bijdrage baseert op het perspectief vanuit de gemeente en grondbedrijven, blijft een blik vanuit de praktijk van private ontwikkelaars met betrekking tot grond en gebiedsontwikkeling achterwege, alsmede de publieke-private rolverdeling die bij deze situatie hoort. Op basis van zijn promotieonderzoek geeft Erwin Heurkens een korte toevoeging op zijn zienswijze.Real Estate and HousingArchitecture and The Built Environmen
Characterization of a phase camera for the Virgo gravitational wave detector
No full textGravitational waves predicted by Einstein have been measured in a few observatories worldwide. These detectors are complex interferometers with sizes of kilometers. Misalignments and aberrations in their optical set-up can create higher-order modes in the laser beam. These higher-order mode effects should be compensated to improve the sensitivity of the interferometer. Such a compensating control system requires a real-time wavefront sensor. The phase cameras developed for the Virgo gravitational wave detector can simultaneously create intensity and phase images of the laser wavefront at 11 demodulation frequencies. Currently, the phase images are not used due to difficulties in the interpretation. Therefore, the goal of this research is to improve the understanding of the phase images of a phase camera for the Virgo gravitational wave detector.A prototype set-up of the phase camera was built at Nikhef. The beam is modulated and sidebands are created such that a beat signal of 80 MHz and the first upper and lower sidebands at 75 and 85 MHz are measured. Images are created by scanning the laser beam across a pinhole diode and digital demodulation. In the chosen optical set-up only one of the two beams that give the measurable beat signal is scanned. This leads to systematic phase effects caused by length differences in the optical path as a function of the scanning angle. To predict the phase images, the interference of two Gaussian beams with a scanning mirror is mathematically derived. Phase images are created with a simulation, which matches within 10 to 20% compared to measurements. To improve the results, the input parameters of the simulation should be measured more accurately and the optical set-up layout should be checked. Also, the phase stability of the prototype set-up is measured. Due to the high sensitivity of the phase camera, very small optical path length differences, for example caused by airflow or temperature differences, lead to significant phase offsets. The long timescale fluctuations in the phase measurements can be reduced by covering the optical set-up. The measured high-frequency phase resolution is Δ𝜙 = 7.1 ± 0.4 mrad and behaves as a function of power as expected.Applied Physics | Physics for Instrumentatio
Behaviour of ODS 12Cr steel under thermal treatment at micro and macro level: A positron annihilation and Vickers hardness study
No full textThe behaviour of ODS 12Cr steel under thermal treatment is studied in this report at micro and macro level. ODS 12Cr steel is always in the ferrite phase and has a melting point at 1500 ºC. Before studying,the retrieved samples were metallographically prepared in four steps: mounting, grinding, mechanically polishing and electrolytically polishing. A measurement was done to analyse the effect of electrolytically polishing on bulk S and W parameters. This showed that mechanically polishing with 0.04 μm alumina particles has the same effect as electrolytically polishing. Next, the alloy was studied with three different measurement techniques: positron annihilation Doppler broadening spectroscopy, Vickers hardness test and positron lifetime measurements. Before these measurements the samples were annealed at selected temperatures for 10 minutes and naturally cooled.The Doppler broadening spectroscopy was done with the Variable Energy Positron beam (VEP) at the Reactor Institute Delft (RID). With this set-up the S and W parameter were measured at different im-plantation energies and converging bulk values of them were determined. The results were fitted with VEPFIT. This measurement was done in the as received state and after annealing from 200 ºC up to1300 ºC in steps of 100 ºC. The Vickers hardness test was done with a load of 0.3 kgf and in the same temperature range as the VEP measurements but with steps of 200 ºC. A lifetime spectrum was measured in the as received state with two sample sandwiching a 22Na source packed with kapton. The average lifetime was determined by fitting the spectrum with LT 9.2. This measurement was repeatedafter annealing for 10 minutes from 200 ºC up to 700 ºC in steps of 100 ºC.The three different measurement techniques show corresponding results. Up to annealing temperatures of 1000 ºC the results stay constant. The bulk S and W parameters are respectively 0.475 and 0.078.The Vickers hardness stays at 395 HV and is comparable to literature values. The average lifetime is approximately 208 ps, which corresponds with defects with sizes comparable to or at least larger thanthat of divacancies. At this temperatures most thermal vacancies are trapped by the nano-oxide particles and are not able to liberate themselves which causes the constant results. At higher temperatures (larger than 1100 ºC) the thermal vacancy concentration increases and the vacancies gain enough energy to be liberated. This causes, in combination with oxide particles clustering, more defects in the material and explains the increasing bulk S value for temperatures up from 1100 ºC. The high bulk S values, compared with an iron alloy with less chromium, can also originate from clustering of chromium atoms. The surface S parameters are also increased in this temperature domain due to the formation of an oxide layer which can be seen with the naked-eye. Finally, the hardness value decreases to 374 HV after annealing at 1200 ºC which is a significant decrease and indicates that the pinning of the nano-particles decreases, resulting in grains growing easier.Applied Physic
In Shadows we Boogie: Light, Shadow and the Repression of Darkness
No full textLight, shadow and shade are at the foundation of our cartesian understanding of 3D space. Where light falls on matter the difference in shading allows us to see this space. However, light also breaks this understanding creating the potential for a phenomenological understanding instead. Which is seen with an extradimensionality in certain situations, where space does not make sense. In this moment, where matter falls on light, the very fabric of the world is distorted. This thesis investigates what happens in between these moments, the infinite movement within the finite moment. The spatial implications of the movement between states are echoed in the material approach, where the relation between figure and ground is investigated and reversed. The polished building and the resulting quarry become the polished quarry and the resulting built form. Creating a monolithic structure, suspended in different states, at once a careful balance between addition and subtraction and between matter and light as principal shaper of space.Architecture, Urbanism and Building Science
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