People,Planning and Adaptability

This article is based on a survey of the New Residential Area in Tangshan.The purposes of the survey were tounderstand the characteristics of the residents' activities,probe into the state of adaptability between people andplanning where conflict lies,and search for the ways to improve planning in residential area.     

Maintenance and management of civil infrastructure based on condition,safety, optimization,and life-cycle cost∗

Cost-competent maintenance and management of civil infrastructure requires balanced consideration of both the structure performance and the total cost accrued over the entire life-cycle. Most existing maintenance and management systems are developed on the basis of life-cycle cost minimization only. The single maintenance and management solution thus obtained, however, does not necessarily result in satisfactory long-term structure performance. Another concern is that the structure performance is usually described by the visual inspection-based structure condition states. The actual structure safety level, however, has not been explicitly or adequately considered in determining maintenance management decisions. This paper reviews the recent development of life-cycle maintenance and management planning for deteriorating civil infrastructure with emphasis on bridges using optimization techniques and considering simultaneously multiple and often competing criteria in terms of condition, safety and life-cycle cost. This multiple-objective approach leads to a large pool of alternative maintenance and management solutions that helps active decision-making by choosing a compromise solution of preferably balancing structure performance and life-cycle cost.     

Methylmercury in water, seston, and epiphyton of an Amazonian river and its floodplain, Tapajós River, Brazil

Levels and accumulation of MeHg were characterized in filtered water, suspended organo-mineral matter, phytoplankton, zooplankton and epiphyton during the dry season and the wet season. In open water of the lentic and lotic ecosystems, the MeHg in filtered water (< 0.2 microm) was near or below the detection limit (< 0.02-0.03 ng/l). These concentrations represent < 5% of the Hgtot. content in filtered water. Inundated forests (Igapó) and macrophyte floating mats were the only sites where MeHg was significantly detected (0.07-0.24 ng/l), representing 3-22% of the Hgtot. in filtered water. MeHg concentrations in organo-mineral suspended matter (2-26 ng/g dry wt. representing 0.6-7.3% of Hgtot.) were correlated with the N content but not with the C content. Data suggest that MeHg enrichment of suspended matter is strongly influenced by the presence of degraded planktonic remains relatively rich in N and MeHg. In zooplankton, MeHg concentrations (20-140 ng/g dry wt.) increased from the dry season to the end of the wet season. This increase was followed by higher proportions of MeHg during the wet season in comparison to the dry season (15-40 to 50-70% of the Hgtot.). The epiphytic material collected from the roots of macrophyte floating mats contained 2-8.5 ng/g dry wt. of MeHg. The proportion of MeHg to Hgtot. in epiphyton (1.5-8.3%) correlated with its C and N contents. The data suggest a greater bioavailability of MeHg in the Tapaj6s River ecosystems due to the seasonal increase in water level and the consequent inundation of the floodplain. Inundation favours the development of large macrophyte floating mats which increases the bioavailability of epiphyton to herbivorous/detritivorous fish. The root zone of floating macrophytes and the flooded organic horizon of the Igapó forest are the only sites along the Tapajós River where significant MeHg can be detected in the water column and sediment. This new study supports the hypothesis that MeHg production and transfer to the first link of the food chain in Amazonian river systems is closely related to organic matter biogeochemistry in the floodplain environment.     

‘Race’, Deprivation and the Research Agenda: Revisiting Housing,Ethnicity and Neighbourhoods

Building on a general account of recent changes and on local case study material, this paper develops an overview of contemporary issues in the interconnected research domains of UK ethnic relations, disadvantage and housing neighbourhoods. It aims to contribute to some rethinking of ethnic disadvantage and discrimination within analytical frameworks, while looking towards more defensible research strategies. Matters referred to in our overview of change include regulatory developments, diversities within and between settled minority ethnic groups, changed patterns of in-migration, disadvantage amongst low-income white households and convergence between ethnic groups in internal socio-economic differentiation. A West Midlands case study used to complement this broad coverage provides reminders of shared problems across ethnic boundaries, and of the merits of caution when hypothesising causative links between deprivation and ethnicity in disadvantaged areas. The section ‘Towards Better Research Practice?’ discusses research approaches and priorities, suggesting that it may be useful to revisit the ‘traditional repertoire’ deployed in the UK ethnic relations and housing.     

Pedro and Inês Bridge,Coimbra, Portugal

Jeremy Melvin describes how Cecil Balmond of Arup and Antonio Adao da Fonseca have created ‘the first bridge that does not meet in the middle’ for Portugal's oldest university town. The bridge's dislocated apex provides not only a focus for a formal investigation into dynamic symmetry, but also a layered narrative that makes sense of its historical setting. Copyright © 2007 John Wiley & Sons, Ltd.     

“Ripple effects” and forecasting home prices in Los Angeles, Las Vegas, and Phoenix

We examine the time-series relationship between house prices in Los Angeles, Las Vegas, and Phoenix. First, temporal Granger causality tests reveal that Los Angeles house prices cause house prices in Las Vegas (directly) and Phoenix (indirectly). In addition, Las Vegas house prices cause house prices in Phoenix. Los Angeles house prices prove exogenous in a temporal sense and Phoenix house prices do not cause prices in the other two markets. Second, we calculate out-of-sample forecasts in each market, using various vector autoregressive and vector error-correction models, as well as Bayesian, spatial, and causality versions of these models with various priors. Different specifications provide superior forecasts in the different cities.     

Figurations of spatiality and temporality in participatory design and after – networks,meshworks and patchworking

In recent years, many have combined actor–network theory (and after) and collective design. In this emerging field that we call participatory design and after, many have proposed and appropriated figurations such as networks, fluid, fire, thing and meshwork. In this paper, we argue that figurations do not only contribute to knowing the world, they also intervene in the becoming of worlds. This recognition of the performative character of figuration suggests that knowledge-making and world-making are inseparable, and makes it very important to be careful what figurations we imagine, articulate and use. In order to continue the work done in ANT and collective design that focuses on uncertainties, boundary-making, complexities and time, we propose the figuration of patchworking. What we particularly find generative with the figuration of patchworking is that it figures design as entanglements in multiple temporalities. Through the figuration of patchworking, we offer an approach that allows for understanding and working with multiple and overlapping collectives. This means to refigure how and where to draw the boundaries of co-designing in technological societies.     

Scale,Site Selection and Function of Economic and Technological Development Zones

This article analyses different characteristics of scale,site selection and function of the current economic andtehnological development zones in our country.It further proposes that it is inappropriate for the economic andtechnological development zones to follow the“pattern of the special zones”,but a new pattern of“small scale,unitaryfunction and closeness to old city”should be adopted to fit in with the practical conditions in our country.The scale,landuse structure and the relations between the development zone and the old city are the basic issues in planning forthe development zones.These three essential elements constitute the pattern of planning which determines to a certainextent the success or failure of the development zones.     

Trace element partitioning and soil particle characterisation around mining and smelting areas at Tharsis, Ríotinto and Huelva, SW Spain

Trace elements may present an environmental hazard in the vicinity of mining and smelting activities. However, the factors controlling trace element distribution in soils around ancient and modern mining and smelting areas are not always clear. Tharsis, Ríotinto and Huelva are located in the Iberian Pyrite Belt in SW Spain. Tharsis and Ríotinto mines have been exploited since 2500 B.C., with intensive smelting taking place. Huelva, established in 1970 and using the Flash Furnace Outokumpu process, is currently one of the largest smelter in the world. Pyrite and chalcopyrite ore have been intensively smelted for Cu. However, unusually for smelters and mines of a similar size, the elevated trace element concentrations in soils were found to be restricted to the immediate vicinity of the mines and smelters, being found up to a maximum of 2 km from the mines and smelters at Tharsis, Ríotinto and Huelva. Trace element partitioning (over 2/3 of trace elements found in the residual immobile fraction of soils at Tharsis) and soil particles examination by SEM-EDX showed that trace elements were not adsorbed onto soil particles, but were included within the matrix of large trace element-rich Fe silicate slag particles (i.e. 1 mm ? at least 1 wt.% As, Cu and Zn, and 2 wt.% Pb). Slag particle large size (1 mm ?) was found to control the geographically restricted trace element distribution in soils at Tharsis, Ríotinto and Huelva, since large heavy particles could not have been transported long distances. Distribution and partitioning indicated that impacts to the environment as a result of mining and smelting should remain minimal in the region.     

Antwerp Central and Liège-Guillemins,Belgium

David Littlefield describes how Belgian railway company NMBS/SNCB is realising a new holistic vision for high-speed rail in the country with railway stations that are being envisaged as destinations in themselves that connect their urban contexts. This is epitomised by Jacques Voncke's recently completed renovation and expansion of the fin-de-siècle Antwerp Central and Santiago Calatrava's dramatic white canopy for the new station at Liège-Guillemins. Copyright © 2010 John Wiley & Sons, Ltd.     

Physical exercise,health, and post-socialist landscapes—recreational running in Sofia,Bulgaria

Abstract

The changes that have been brought about since the end of state socialism include modifications to the urban landscape of cities like Sofia, Bulgaria. There has been a decline in the number of green spaces, sports facilities and state-run sports programmes. The changing urban landscape has seen an increase in car travel, car parking and projects such as the Sofia Metro. Citizens from Bulgaria are among the least active in Europe; this has an enormous effect on the prevalence of obesity and non-communicable diseases. However, during the last decade, there has been an increase in recreational running, and in particular informal running clubs in Sofia. This paper uses recreational running to understand the changing landscape of post-socialist cities and its effect on techniques of public health. Using data from two in-depth qualitative case studies of informal running clubs from Sofia to examine the effects of the changing urban landscape on recreational fitness practices and well-being, the rationale of this paper is that this has the potential to generate fresh suggestions about the effective promotion of public health through exercise in view of how and where urban running is currently conducted in post-socialist landscapes.     

Property rights,urban land markets and the contradictions of redevelopment in centrally located informal settlements in Bogotá, Colombia,and Buenos Aires,Argentina

Following rapid urban growth over the past four decades, informal settlements originally located in peripheral areas of large Latin American cities are now occupying increasingly valuable land in the central city. As a result, these communities are facing intense redevelopment pressures with important implications for housing accessibility. Although this situation is common in the region, central city redevelopment assumes a variety of forms depending on shifting approaches to land titling under different urban governance regimes, resulting in variegated, formal, and informal land markets. This comparative historical case study of Bogotá, Colombia, and Buenos Aires, Argentina, suggests that urban redevelopment planning has drawn on two contrasting discourses of property rights: one privileging private market approaches based in the economic theory of Libertarianism; the other favouring state authority and redistribution building on the ethics of Utilitarianism. In both Bogotá and Buenos Aires, however, de facto land-titling policies have shifted between the principles of Libertarianism and Utilitarianism under different political regimes, and neither market- nor state-oriented approaches have served to safeguard low-income residents’ access to housing. Instead, the shifting influence of each discourse has structured formal and informal land markets in ways that complicate long-standing debates surrounding land titling in informal settlements.     

Architectural Relationship among China, Korea and Japan

一、干栏构造和席居方式 Chinaee anchitecture,Koreanavchitecture or Japanlse architec-ture,在构造上的一致性是人所共知的:这种构造起于干栏。干栏这种古老的居住建筑类型,发源于灵长类动物的巢居。作为人类近亲的猿猴,绝大部分是巢居的,科学家们在非洲只发现南端的开普敦和北端的埃     

Memory,narrative and display – city museums in recent initiatives and debates

Currently, the study and the exhibition of the history and artistic traces of city development are gaining new interest. Several Italian and European cities are proposing, or have just established, organisations or museums intended to ‘display’ their past. Recently a research group has been constitued at the University IUAV of Venice based on the premiss that a contemporary City Museum has to be a conduit for knowledge to a large and varied public including, on equal terms: citizens, immigrants, tourists and people with cultural and professional interests in the urban environment. In this sense Venice seems to be a very good clase‐study. While an important initiative, such as the constitution of a new Museum of the twentieth century in Mestre (the mainland of Venice) is going on, the research group thinks that this kind of institution, within the framework of a very complex and rich system of museums, such as the Venetian one, could have a wide remit. In fact, one of the special key issues for Venice in the twentieth century has been opening up its cultural and productive activities to the external world. Foreigner visitors, as well as many citizens have always had the vision of Venice as a medieval and renaissance city with a very old historical centre. Yet in the course of the twentieth century, the urban settlement had greatly changed in a very interesting and innovative way. This has to be explained and shown to both tourists and the Venetians.     

Correlation between Schmidt hardness,uniaxial compressive strength and Young’s modulus for andesites,basalts and tuffs

Volcanic rocks from the Bodrum Peninsula have been studied to establish a relationship between the uniaxial compressive strength (UCS), Youngs modulus (E) and Schmidt hammer rebound number (N). Test results obtained on andesites, basalts and tuffs have been assessed statistically and the parameters obtained correlated. Regression equations were established between N, E and UCS.The study suggests the following empirical relationships: UCS=2.75 N–36.83, E=0.17 UCS+0.28 and E=0.47 N–6.25. The relationships are somewhat different from the correlations suggested by previous studies and should therefore be used only for andesites, basalts and tuffs with degrees of weathering and mineralogical structure similar to those used in the present study. The results obtained using solely the Schmidt hammer test for estimating mechanical properties of rocks are less accurate than when a full suite of laboratory tests is carried out but it is hoped that these empirical equations will help geotechnical engineers making practical decisions at a preliminary site investigation stage.