Ontology of building in war and reconstruction

Post-war cities epitomise both a disjuncture and resonance between the end of the nation-state, on the one hand, and a preoccupation with reinventing the city through building, on the other. Programs of 'reconstruction' and 'remaking a city' are preceded by destruction: a destructive force has altered the face of the city, buildings have been destroyed and damaged, their ordered and ordering materiality is eroded, and the city is no longer an image of an idealized symbol of unity and identity. Belying the mythical power of architecture as a material and symbolic force, is also its fragility. Architecture can be monumentally erected and can have a presence and persistence that inspires awe and wonder, but it can also, just as easily be de-erected, demolished, destroyed. It can be de-constructed in a way that the literal sense of the term signals its symbolic frailty. Perceiving the symbolic as intrinsically tied to the physical articulation and presence of the architectural edifice, both reveals and conceals that the symbolic is also tied to fantasy, memory and fiction. Drawings that precede construction are projections of an idealized image of something that does not yet exist, and photographs that remain after a building is demolished are representations of a past realist that is now fictional.

The architectural edifice and the phantoms of history

Starting with the literal and physical role of the "ground," this article attempts to bring this "ground" into a discursive arena. In particular, the author is thinking about the period at the end of a war, the period in between destruction and reconstruction, exemplified in some classic postwar films in which the architecture of the city is in a state of ruin—deformed, eroded, and dark—but there is no further destruction. The article calls this period "a gap of history" and its investigation is set against a claim that architecture is a reconstructive practice, that it is enlightening and aspiring. History, on the other hand, is captured by scenes of the battlefield and dominated by a narrative of war and destruction. The article makes reference to the real and fantasy desire for destruction (war and history) and reconstruction (architecture), and how through the connecting plane of the ground architecture is entangled in war and history of destruction as it figures in reconstruction. Architecture is contingent on history as discursive—history that is not unified, fixed, or evolutionary but rather contested and rewritten within a conflictual battlefield.

Mathematical modelling of the refractive index reconstruction through global optimization

We examine a mathematical model of non-destructive testing of planar waveguides, based on numerical solution of a nonlinear integral equation. Such problem is ill-posed, and the method of Tikhonov regularization is applied. To minimize Tikhonov functional, and find the parameters of the waveguide, we use two new optimization methods: the cutting angle method of global optimization, and the discrete gradient method of nonsmooth local optimization. We examine how the noise in the experimental data influences the solution, and how the regularization parameter has to be chosen. We show that even with significant noise in the data, the numerical solution is of high accuracy, and the method can be used to process real experimental da.ta..

A computational approach to the reconstruction of surface geometry from early temple superstructures

Recovering the control or implicit geometry underlying temple architecture requires bringing together fragments of evidence from field measurements, relating these to mathematical and geometric descriptions in canonical texts and proposing "best-fit" constructive models. While scholars in the field have traditionally used manual methods, the innovative application of niche computational techniques can help extend the study of artefact geometry. This paper demonstrates the application of a hybrid computational approach to the problem of recovering the surface geometry of early temple superstructures. The approach combines field measurements of temples, close-range architectural photogrammetry, rule-based generation and parametric modelling. The computing of surface geometry comprises a rule-based global model governing the overall form of the superstructure, several local models for individual motifs using photogrammetry and an intermediate geometry model that combines the two. To explain the technique and the different models, the paper examines an illustrative example of surface geometry reconstruction based on studies undertaken on a tenth century stone superstructure from western India. The example demonstrates that a combination of computational methods yields sophisticated models of the constructive geometry underlying temple form and that these digital artefacts can form the basis for in depth comparative analysis of temples, arising out of similar techniques, spread over geography, culture and time.

Reconstruction in Aceh: building whose capacity?

One of the dominant themes in development programmes over the last fifteen years has been a commitment to capacity building. This paper investigates the forms of capacity building in Aceh, Indonesia, since the devastating earthquake and tsunami that hit the province on 26 December 2004. Despite the preference of the Acehnese people for reconstruction processes based on the principles of community development, local people have been largely marginalized by both the Indonesian government and the international aid and development agencies. The paper suggests some of the reasons for this marginalization.

Reconstruction of the refractive index profile of planar waveguides using ray tracing analysis

We propose a method for refractive index profiling based on measuring coordinates and angles of laser beams passing across the waveguide layer. Calculations are performed by solving an integral equation using new global optimization methods.

Reconstruction of megalake Chad using shuttle radar topographic mission data

In the 2,500,000 km² Lake Chad Basin in central Africa, the 2000 Shuttle Radar Topographic Mission (SRTM) data have been used to supplement the existing topographic data. SRTM data produce much sharper images of the region's topography and provide new insights into debates about the nature and extent of late Quaternary Lake Chad. This paper shows that the accuracy of SRTM30, the recently released 30 arc seconds topographic data from SRTM, largely surpasses that of previous global Digital Elevation Models (DEMs) available in the region. Using a GIS we identified from SRTM30 elevation data key features in the landscape topography providing further evidence for the existence of a Megalake Chad. The SRTM30 data corroborate the presence of two ancient shorelines associated with stillstands of the paleolake at the elevation of the Mayo Kebbi and Bahr el Ghazal spillovers. We found a general flattening of the topography in the region covered by Megalake Chad which is most likely the result of wave-cut action. The SRTM30 data show that the remains of the highest paleoshoreline have a constant elevation of 325 ± 5 m amsl. At its maximum extent, Megalake Chad had an area of about 340 000 km² (only 8% less than the present-day world's largest lake, the Caspian Sea). The SRTM30 data also revealed ancient drainage networks in the Sahara that lead to Megalake Chad. We compiled available 14C dates to constrain Holocene Megalake Chad events. The results presented in this paper have significant consequences for improving our knowledge of regional paleohydrology and continental climate change. This study is also the first step for a GIS-based reconstruction of late Quaternary paleohydrology in tropical Africa.

Changes in bacterial concentration in the liver correlate with that in the hepaticojejunostomy after bile duct reconstruction: implication in the pathogenesis of postoperative cholangitis

Postoperative cholangitis is a frequent and unpredictable complication of unknown etiology following bile duct reconstruction (BDR), particularly for biliary atresia. This study was undertaken to correlate the growth of bacteria in the hepaticojejunostomy with that in the liver after BDR. Quantitative bacterial culture was done on the specimens taken from the liver and from the hepaticojejunostomy at 1 week (group 1, n = 7), 1 month (group 2, n = 7), and 2 months (group 3, n = 7) following BDR with Roux-en-Y hepaticojejunostomy in piglets after 2 weeks of common bile duct ligation. The histological examination of the liver and the hepaticojejunostomy, as well as serial monitoring of hemogram and liver function tests, were performed to correlate the findings with the bacterial concentration of the liver and the hepaticojejunostomy following BDR. The bacterial concentration of the hepaticojejunostomy, expressed as log10 colony-forming units per gram (log10 CFU/g) of the hepaticojejunostomy, showed a progressive decrease from 8.38 ± 1.36 in group 1, 7.07 ± 2.54 in group 2, to 3.56 ± 1.31 in group 3 (p = 0.001). The log10 CFU/g of the liver also showed a progressive decrease from 5.02 ± 1.59 in group 1, 3.16 ± 1.56 in group 2, to 2.19 ± 1.09 in group 3 (p = 0.006). There was a significant positive correlation of the log10 CFU/g of the liver (n = 21) with that of the hepaticojejunostomy (n = 21) following BDR (r = 0.600, p = 0.004). Most of the infectious pathogens isolated from the liver were also isolated from the hepaticojejunostomy. The changes in hemoglobin, bilirubin, albumin, and ammonia significantly correlated with the changes of the bacterial concentration of the liver. The results of the study suggests that hepatic bacterial proliferation after BDR is significantly affected by microbial overgrowth in the bilioenteric anastomosis and is associated with deteriorated liver function and hemogram.

Postdeconstruction-reconstruction of journals as a methodological solution for the postmodern researcher

Many in the postmodern era recognise the subjectivity of the research process and in doing so seek to dismantle the traditional barrier between the researcher and the researched. How may the standpoint of this research subject be incorporated? How may this be implemented in practical terms? And how may this be analysed without theoretical recourse to essentialism? This paper proposes a new application of journalling to solve these methodological dilemmas drawing on a wider research project that investigates how practitioners conceptualise and enact policy reform. Responses to related postmodern methodological dilemmas and solutions will be invited from conference discussants.