The main issue of this article are eco-bridges, pedestrian-friendly imaginary sites (enclave) of greenery in urban tissues. Discussed cases include the implementations of projects such as: the High Line in New York and the Garden Bridge in London. The main theme of the article is to compare the green bridges in the urban tissue embedded with “living root bridges”. The author of the article highlights the potential limits for “living root bridges” in the urban tissue, resulting from the climate, time of their creation and limits of urban space. She also notes the strong tendency to create green areas in the “concrete” urban structure, but also the use of artificial materials in tissue of “living root bridges”.
One of the most effective designs to control the road traffic noise is the T-shaped barrier. The aim of this study was to examine the performance of T-shape noise barriers covered with oblique diffusers using boundary element method. A 2D simulation technique based on the boundary element method (BEM) was used to compute the insertion loss at the center frequency of each one-third octave band. In designed barriers, the top surface of the T-shaped noise barriers was covered with oblique diffusers. The width and height of the barrier stem and the width of its cap were 0.3, 2.7, and 1 m, respectively. Angles of he oblique diffusers were 15, 30, and 45 degrees. The oblique diffusers were placed on the top surface with two designs including same oblique diffusers (SOD) and quadratic residue oblique diffusers (QROD). Barriers considered were made of concrete, an acoustically rigid material. The barrier with characteristics of QROD, forward direction, and sequence of angles (15, 30, and 45 degrees) had the greatest value of the overall A-weighted insertion loss equal to 18.3 to 21.8 dBA at a distance of 20 m with various heights of 0 to 6 m.
According to European Bison Pedigree Book, wisent population in Poland by the end of 2016 counted 1698 individuals, including 1455 animals in freedom. Therefore in Poland, live over 25% of presently living wisents, i.e. the largest population of this species in the world. Next to our state borders, there are free ranging populations in Belarus – Białowieska Forest about 480 individuals, in Ukraine – National Park Beskyd Skolyvski – 33, and Slovakia – National Park Poloniny – 27 wisents. Planned is the establishment of new transboundary populations at Landscape Park of Lower Oder River Valley, at Romincka, and Augustowska Forests. In many places where transboundary populations already exist or are planned, their potential joint home ranges are divided by anthro-pogenic (fencing – Ukraine, Belarus) or natural barriers (Oder River – Germany). The basic prob-lem for creating such populations will be either elimination of such barriers or introduction of passages allowing for animals' movements. Benefits provided by transboundary populations are: larger area of available habitats, a possi-bility for the maintenance of larger populations, and a chance for mitigation of isolation among particular herds. However possible problems include: more difficult population management due to differences in formal status of the species in particular countries, complicated budgeting of costs connected with maintenance of such herds and compensation of damages, and a possibility for a transmission of infectious diseases, not occurring at territory of one of neighbouring countries. Therefore, creation of transboundary populations of wisents is desirable regarding the possibility of extension of their home ranges and increase of effective numbers. Effectiveness of such initiatives will however depend upon a possibility for stable international agreements and routine coopera-tion. Very important is an establishment of an uniform formal status of this species in Europe or at last in EU member countries.
The article presents issues related to designing recreational and green areas and spatial planning of public areas in the context of physical disability. It gives exemplary proposals of public space development and spatial solutions for people with disabilities. It also discusses issues related to the designing and construction of selected items of landscape architecture for physically disabled people, which were created as part of the education of landscape architects.
Lean manufacturing has been the most deliberated concept ever since its introduction. Many organization across the world implemented lean concept and witnessed dramatic improvements in all contemporary performance parameters. Lean manufacturing has been a sort of mirage for the Indian automotive industry. The present research investigated the key lean barriers to lean implementation through literature survey, confirmatory factor analysis, multiple regression, and analytic network process. The general factors to lean implementation were inadequate lean planning, resource constraints, half-hearted commitment from management, and behavioral issues. The most important factor in the context of lean implementation in Indian automotive industry was inadequate lean planning found with the help of confirmatory factor analysis and multiple regression analysis. Further analysis of these extracted factors through analytic network process suggested the key lean barriers in Indian automotive industry, starting from the most important were absence of proper lean implementation methodology, lack of customer focus, absence of proper lean measurement system, inadequate capital, improper selection of lean tools & practices, leadership issues, resistance to change, and poorly defined roles & responsibilities. Though literature identifying various lean barriers are available. The novelty of current research emerges from the identification and subsequent prioritization of key lean barriers within Indian automotive SMEs environment. The research assists in smooth transition from traditional to lean system by identifying key barriers and developing customized framework of lean implementation for Indian automotive SMEs.