Geospatial evaluation of belgrade for the purposes of determination of suitable locations for the construction of PV plants

The aim of this paper is to identify the most suitable locations for the construction of Solar Photovoltaic Plants (PVP) on the territory of the City of Belgrade (Republic of Serbia). The city is rich in natural resources and abundant in energy potential. The climatic and spatial characteristics favor the use of solar energy: the average annual solar radiation in Belgrade is 1446.8 kWh/m(2)/year, and the sunshine duration is around 2200 h/year. The analysis covered the area of 3240.7 km(2) (administrative area of Belgrade). Geospatial evaluation was based on three basic criteria: aspect, slope and land use. The Method of elimination in combination with modern methods in geospatial research (GIS) was applied. Based on the mentioned geospatial factors, thematic maps were made and later, their overlapping resulted in obtaining a synthesis Map of the suitability of the terrain for the construction of the PV plants. Of the total considered area, 13.68% were evaluated as suitable for the given purpose

Elemental Disappearances

The things sought after here are apparitional: they appear and disappear at will; they perfect the art of materialization and vanishing. Such is the nature of living dangerously, and with it the short duration of enchantment. This collection tracks provocative ideas, artifacts, and phenomena rising and fading across different territories of the contemporary world. Through a constellation of powerful thought-images, the authors uncover spaces of an ephemeral and fugitive nature in order to generate a fractal vision of our time and beyond. A former communist prison island in the Adriatic Sea, now abandoned and overgrown with wild plants; the stone garden of a deaf Iranian peasant who dances ecstatically among his geological formations; a Belgian sculptor who combines wax and flesh to depict human and animal forms in states of half-manifestation, incompletion (missing limbs), or branching (morphing into other organisms); a cultural movement in Brazil that takes the discarded debris of urban centers and transforms their splintered wood pieces into massive labyrinths and underground caverns; a blacksmith poet in Afghanistan who alternates between tasks of hammering metal and writing lyrical verses amidst the smoke-clouds of his forge; a Cuban writer whose delirious fixation with the sea compels him to invent a language of pure untimeliness. There are countless sites of disturbance within the postmodern landscape, and yet far too often these disruptive “scenes” remain untheorized and misaligned, treated as random deviations and thus afforded no surpassing consequence or philosophical complexity. Such micro-trajectories necessitate an archive and conceptual matrix that will steal them from their false obscurity and decipher them instead as the passcodes to an imminent global turn. For this, one must return to the amorphous outlook of “the marauder” or “the wanderer.” This book, then, aims to devise an ever-expanding configuration of radical outsides: elemental fronts that lead to unforeseen principles; alternative profiles of experience (intense becomings); incendiary, ominous, or vitalistic signs in circulation across the epochal horizon

Landscape evaluation for the purposes of ecotourism - case study of Burgenland

The objective of this paper is the landscape evaluation of Burgenland (federal state of Austria) for the purposes of ecotourism, based on the Quantitative method of diversity (V-Wert method), where the natural elements of landscape (forests, water surfaces, relief, climate) and land use of considered area are taken as the main criteria for the evaluation. The research was carried out using modern mapping methods and GIS software. By applying this method, more or less favorable surfaces are determinated for the given purposes, with the aim of identifying landscape units which have a high degree of convenience for the development of different types of sustainable and ecotourism, where the main motives of tourist activity are natural heritage and natural touristic values, which are making that landscape more exclusive and more attractive among tourists and visitors. The results of geospatial analysis and landscape evaluation of considered spatial entity in this paper could greatly contribute to an additional tourist valorization of Burgenland

An Integrated Intelligent CAD/CAPP Platform: Part I-Product Design Based on Elementary Machining Features

We present a platform for integrated CAD/CAPP part design based on Elementary Machining Features (EMF) and intelligent approach for setup planning and operation sequencing based on a genetic algorithm through two papers. In this paper, as Part I of this platform, CAD design is executed by destructive method using objects in the form of EMF. We developed this platform based on EMF in the form of extension of the SolidWorks program system, based on Application Programming Interface (API). Also, completely new informational structure of the EMF`s, database and management of the database of the EMF`s were developed. During design phase, child EMF (generated via parent EMF from database) was enriched with a wide range of technological information. Production rules, based on the existing (geometrical) and additional (technological) information generated from the EMF, were developed and further used to generate a list of elementary machining operations (EMO) for each EMF. All previously mentioned pieces of information were necessary in the later phase of the proposed platform which was described in Part II of this paper. In this paper we present a case study applied to one new industrial example-body of the hydraulic cylinder, confirming a high level of usability of this part of integrated intelligent platform

Synthesis of calcium oxide based catalysts for biodiesel production

In this work, synthesis of several types of calcium oxide based catalysts by mechanochemical treatment and subsequent calcination is presented. Prepared nanocomposite CaO·ZnO, calcium containing perovskites CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5, a series of CaO·SiO2 mixed oxides and calcium diglyceroxide (CaDG) were characterized and tested in the methanolysis of sunflower oil under different working conditions: catalyst amount, agitation speed, temperature and methanol to oil molar ratio

Synthesis of calcium oxide based catalysts for biodiesel production

In this work, synthesis of several types of calcium oxide based catalysts by mechanochemical treatment and subsequent calcination is presented. Prepared nanocomposite CaO·ZnO, calcium containing perovskites CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5, a series of CaO·SiO2 mixed oxides and calcium diglyceroxide (CaDG) were characterized and tested in the methanolysis of sunflower oil under different working conditions: catalyst amount, agitation speed, temperature and methanol to oil molar ratio

Legal and planning framework for nature protection - comparative analysis of Austria and the Republic of Serbia

The topic of the study is specificity of the system of protection of natural parks in Austria and the Republic of Serbia. Similarities and differences of the system in analyzed countries are shown through the analysis of planning documents, legal and other legal regulations referring to nature protection, with special emphasis on problems of protection of areas of natural parks. The aim is to indicate to the possibilities of improvement and future direction of development of the system of protection of national parks in Serbia on the basis of examples of good practice of EU member countries

An evaluation of summer discomfort in Nis (Serbia) using humidex

The bioclimatic analysis of the central area of the city of Nis conducted in this paper is based on the use of the bioclimatic index Humidex, which represents subjective outdoor temperature that one feels in warm and humid environment. The purpose of this research is to observe the index change on a daily basis during the hottest part of the year (June, July, and August) over the period from 1998 to 2017. For the purposes of this analysis, hourly (7:00, 14:00), maximum and mean daily values of meteorological parameters (air temperature and relative humidity) were used, for the period of 20 years (1998-2017), which were measured at Nis weather station (43 degrees 19'N, 21 degrees 53'E, at an altitude of 202 meters). The findings indicate a gradual change in the bioclimatic characteristics of this area during this period, especially over the last decade. After 2007 there has been a decrease in the total number of the days described as "comfortable". However, there has been an increase in the index values in all the other heat stress categories characterized by a higher or lower degree of thermal discomfort. The years 1998, 2000, 2003, 2007, 2011, 2016, 2015, and 2017 stand out as adverse years

The impact of infrastructure planning in spatial plans on carrying capacity assessment in mountain tourist areas

This paper analyses the impact of infrastructure planning on carrying capacity assessment in mountain tourist areas, aiming to define the procedure, as well as to present an algorithm that could enable the application of carrying capacity methods in the process of developing planning documents. This would, in addition to the common practice of the hitherto used research methods, pay appropriate attention to the impact of infrastructure systems. In this regard, the paper first presents the basic theoretical and methodological problems of carrying capacity assessment, and then it considers the basic characteristics of evaluating carrying capacity in mountain tourist areas. Following this is a review of the basic principles of infrastructure planning, which gives practical recommendations for the infrastructure planning process in mountain tourist areas, with a particular emphasis on the impact of infrastructure on carrying capacity assessment. The example of Tara National Park, a mountainous area in Serbia which served as a place for verification of this procedure, shows the need to review the current planning solutions defined for this protected area

Landscape evaluation for the purposes of ecotourism - case study of Burgenland

The objective of this paper is the landscape evaluation of Burgenland (federal state of Austria) for the purposes of ecotourism, based on the Quantitative method of diversity (V-Wert method), where the natural elements of landscape (forests, water surfaces, relief, climate) and land use of considered area are taken as the main criteria for the evaluation. The research was carried out using modern mapping methods and GIS software. By applying this method, more or less favorable surfaces are determinated for the given purposes, with the aim of identifying landscape units which have a high degree of convenience for the development of different types of sustainable and ecotourism, where the main motives of tourist activity are natural heritage and natural touristic values, which are making that landscape more exclusive and more attractive among tourists and visitors. The results of geospatial analysis and landscape evaluation of considered spatial entity in this paper could greatly contribute to an additional tourist valorization of Burgenland