Volume XIV |

Seismic loss estimates for buildings in Bucharest’s historic centre in case of another 1977 Vrancea earthquake

Abstract: As past seismic events showed, Bucharest (capital of Romania) can be significantly affected by another intermediate depth (or subcrustal) Vrancea earthquake. The 1940 (Mw 7.7) and 1977 (Mw 7.4) earthquakes put the number of casualties in Bucharest over 1600. Although most people and authorities are aware of the exposure, the mitigation actions are still improper and there is actually a very uncertain image of the current damage extent. The paper provides scientifically based answers, through quantitative earthquake loss estimation based on recently developed analytical methods, applied for buildings in the historic centre of Bucharest. The approach offers a relevant picture of the actual possible damage distribution after an earthquake similar to the 1977 event, in an area with heavy traffic and a high number of tourists. The Improved Displacement Coefficient Method used in this study relies on the description of structural behaviour within different limits due to specific ground motion parameters like spectral acceleration. The 358 buildings in the study area are assessed individually and specific vulnerability curves are assigned to each typology, based on height, construction year and material. The same classification as in the Near Real-Time System for Estimating the Seismic Damage in Romania is used. The results are evaluated in order to be further included in the system. In addition, an empirical loss assessment procedure reflecting the economic impact of the previously calculated situation was employed. Relevant maps for mean damage ratio and economic losses are presented and interpreted.

Volume XIV |

An object based building extraction method and classification using high resolution remote sensing data

Abstract: The increasing availability of the high spatial resolution satellite images has provided a new data source for building extraction. This paper proves the concept of object oriented classification using high-resolution satellite data (Cartosat-1 satellite data fused with IRS-1C, LISS IV data) for automatic building extraction using eCognition software. In this study, the overall accuracy of classified image is 0.94 and Kappa accuracy is 0.92. The producer accuracy for building, vegetation and shadow are 0.9745, 1.0 and 0.8999, respectively, whereas user accuracy for building, vegetation and shadow are 1.0, 0.9475 and 1.0 respectively. The classification overall accuracy is based on TTA mask (training and test area mask) and it is 0.98 and Kappa accuracy is 0.96. The producer accuracy for building, forest and shadow are 1.0, 1.0 and 0.7344, respectively and user accuracy for building, vegetation and shadow are 1.0, 0.9475 and 1.0, respectively.

Volume XII |

Pécs, a possible gateway city

Abstract: When Hungary’s borders were fixed after the World War I, Szeged and Pécs became towns managing the relations of Hungary with the countries in the south. In our paper we examine the factors that make Pécs suitable for the Southern intermediate role, and whether the goals and achievements of Pécs2010 European Capital of Culture programme series reinforced this position.
Pécs has an outstanding status among the Hungarian towns of county rank and it is the most powerful regional centre. Its opening towards the south, its multicultural composition, its institutionalised system of foreign affairs, and its roles in various cooperations contribute to the city’s success in fulfilling the “gateway” role towards the South-Western direction.

Volume XI |

Urban image analysis through visual surveys. Craiova town (Romania) as a case study

Abstract: The cities were affected by the processes of urban revitalization, aiming to be included in the global market competition where they try to attract more economic resources and to achieve an important position, thus transforming their perceptual urban representations. Some cities opted to reshape their urban spaces, projecting an image that attracts the visitor and the resident, while at the same time they try to manage the issues and tensions associated with this process of urban transformation.
Thus, the city image is increasingly exposed to recent progresses and transformations of infrastructures and land use. This article aims to outline the perception of the urban image at micro- level scale with the help of data analysis resulting from the VPS- Visual Preference Survey, conducted in Craiova town, Romania. A new urbanistic approach to measure the urban image, avoiding the classical Lynch model of analysis, is the VPS, developed by Anton Nelessen, which is a process that allows the residents to take part in the urban assessment and to create a new development vision for the future. By ranking different images of places, people from Craiova express their perception on the urban image, taking into consideration four urban aspects: public spaces, built environment, transportation and socio-cultural environment, and building in this way the community they want to see in the future. The results show that the city image needs some major urban interventions in terms of design, architecture and functionality of the public urban spaces. Consequently, some principles are proposed to public actors for improving the four main sections discussed in the survey.

Volume X |

The ‘Museum Night’ Event – the Demographic Profile of the Visitors in Serbia

Abstract: The aim of this paper is to consider the differences in the structure of visitors in tourist events, depending on the place of holding. The “Museum Night” tourist event was first held in Germany (Berlin) in 1997, with the aim of popularizing cultural tourism and museum complexes. This touristically considerable event has been very popular and frequented in Serbia since 2005. At first it was held only in Belgrade, when in the year 2007, gradually, other cities also joined the programme. Therefore, a public opinion poll was carried out for the purposes of this paper (analysis according to age, sex structure and economic activity). The sample of the population was divided into three age groups. The research, at the territorial level, included the cities of Belgrade and Novi Sad.