M. Šlezingr, J. Synková, L. Foltýnová and H. Uhmannová
Possibility of utilization directing structures in river revitalization
Directing and concentrating structures are mainly used on water courses with unstable channels and major sediment transport or in areas with major bank erosion. The main purpose of these structures is to redirect water flow from the stressed and very often eroded bank to the centre of the channel or other parts of the channel, where the water flow may be used, e.g., for dispersion of unsuitable deposits before its eventual stabilization by natural succession. Another important goal is to achieve a desired change in a stream channel by using the transporting power of the water flow and targeted deposition of any sediment. The area of a deflecting structure, a so-called hydraulic shadow, also appears where sediment is deposited (deflector). The objective is to achieve the deposition of sediments at desired places in the stream. It is possible to design a whole range of suitable or less suitable types of flow deflectors. In our article, we will particularly focus on problems of revitalizing a water course; i.e., the design of structures from biological or biotechnical elements for channel stabilization.
K. Vrána, T. Dostál, P. Koudelka, V. David and K. Uuléřová
The effect of the conditions of a landscape on its retention capacity
Questions related to the occurrence, frequency, intensity, duration, characteristics and causes of floods have been discussed more in recent years. Two basic approaches to flood control often conflict. The first is based on the assumption of the considerable effect of a landscape's retention capacity, which can in fact prevent surface runoff generation and flood formation and can significantly transform flood wave. The second approach asserts that the retention capacity of a landscape is nearly negligible and that the only reliable flood protection can be provided by extending the technical structures of flood control measures mainly and directly on water courses. Two different approaches were applied to assess the effect of landscape conditions and revitalization measures on surface runoff and flood formation within a catchment and floodplain. The conclusion shows that the effect of landscape revitalization is very important, but mainly for low return periods of flood events, while for extreme events, the effect on landscapes and floodplains becomes less important and even negligible.
The Conception of Cultural Space Revitalization as a Way to Increase Downtown Attractiveness. A Case Study of Chosen Medium-Sized Towns in the Wielkopolska Region
This paper deals with chosen aspects of revitalization within the downtown area of Polish medium-sized towns. The author underlines the necessity of introducing a mixed-use offer in the city centre. Not only commerce and services, but also cultural functions and values should be promoted in the contemporary city centre. Therefore the idea is presented of turning the downtown public space into a single, homogeneous and integrated spatial-functional system. The system is to introduce cultural functions on the basis of so-called cultural space, which is defined here as a specific kind of public space of historical or cultural value, or that has the potential to develop this kind of new functions.
The paper presents the situation regarding the reclamation of post-mining land in the case of particular lignite mines in Poland until 2012 against the background of the whole opencast mining. It discusses the process of land purchase for mining operations and its sales after reclamation. It presents the achievements of mines in the reclamation and regeneration of post-mining land as a result of which-after development processes carried out according to European standards-it now serves the inhabitants as a recreational area that increases the attractiveness of the regions.
The article discusses the influence of macro-social processes and issues of assimilation, acculturation, ethnic and linguistic revitalization on the example of one particular group of German woodsmen in the social context of Western Slovakia. It attempts to analyse how historical and political changes during the 20th century influenced changes in the structure, system of values and hierarchy of ethnic group and whether that helped or prevented the assimilation of the group’s members. The article also attempts to indicate the possibilities of today’s ethnic and linguistic revitalization.
Our PhD researches include brownfield revitalization,1 the application of the methods of interim utilizations on greeneries,2 and the formation background and potential of community gardens.3 We compared our systems of criteria in hope of extensive research conclusions. In order to trace the urban development possibilities in Budapest, we analysed brownfield revitalizations where the interim utilizations included allotment gardens, too. We concluded that such developments are likely to create environmental and social added value. Early results of the valorization process are important by themselves, but the perpetuation of interim land utilization holds even greater values.
The study presents a management model for post-mining areas, which includes the process of reclamation and management in the context of the socio-ecological system. This means that it is necessary to include the relations in the management system that occur between the main stakeholders (internal relations) and the ecological, economic and socio-cultural conditions of the environment (external relations). Verification of the recommended model was carried out on the basis of the analysis of environmental, economic and socio-cultural processes currently observed in the Adamów Brown Coal Basin, which is in the phase of liquidation. The conclusion presents constraints in the legal system that are not propitious for comprehensive solutions in the field of revitalization.
Demographic problems, obsolescence of existing buildings, unstable economy, as well as misunderstanding of the mechanism that turn city quarters into areas in need for intervention result in the implementation of improvement measures that prove inadequate. The paper puts forward an algorithm of revitalization program for housing developments and presents its implementation. It also showed the effects of periodically run (10 years) three-way diagnostic tests in correlation with the concept of settlement management.
In recent decades, the number of craft breweries in the United States has increased dramatically, increasing from around a thousand in 1996 to over six thousand today. In order to minimize start-up and initial operating costs, many craft breweries have located in older buildings in economically distressed neighborhoods. Craft breweries are particularly adept at engaging in adaptive reuse, with the result that they occupy buildings that were previously once churches, cinemas, fire stations, etc. This investment by craft breweries, in conjunction with investment by other businesses (as well as the public sector), has resulted in the revitalization of many of these neighborhoods. Neighborhoods that were once full of abandoned buildings and suffered from social problems such as high crime rates have become destinations for residents and tourists alike. At the same time, however, there is a dark side to this neighborhood revitalization as rising real estate values has forced many established, often low-income, residents to leave these neighborhoods. In this paper, I examine the growth of the craft brewing in the United States and the preference of many craft breweries for inexpensive building space in economically distressed neighborhoods.
The article presents issues connected with renovating multi-storey precast concrete buildings, resulting from the consequences of construction defects occurring over the course of the building process and use of the buildings, as well as design flaws and construction defects when insulating external partitions. Analyses and conclusions which stem from them cover issues of renovation in the light of: damage in the vertical and horizontal joints, damage to the connection of layers in three-layer load-bearing and curtain walls, the effect of the damage on the possibilities of carrying out functional modernization of residential units, the effect of the damage on the effectiveness of thermo-modernization - new problems related to faulty insulation