In this paper, the morphometric characteristics of the Una River basin (Bosnia and Herze­ govina) were analyzed using geographic information systems (GIS). Quantitative geomor­ phological analysis was carried out (hypsometric characteristics, slope inclination,vertical relief dissection, and slope exposition). Analyzed parameters are indicators of shapes and recent processes in relief. The significance of this analysis is reflected in the fact that the obtained data have numerical value, are verifiable and multiple applicable in practice for the purposes of agriculture water management, construction sector urbanism, tourism, spatial planning, etc.

This work was carried out calculating and research the deflection of the vertical on line traverse in the geodetic network of the City of Sarajevo. Determination of vertical deflection is done using Quadar. Computations consist of two segments. The first segment is the calculation of the coordinates of points without taking into account the vertical deflection, while the second segment dealt with the calculation of the coordinates of points by taking into account the vertical deflection.

An assessment of the effectiveness of inertization of coal dust with inert dust is an important step in prevention of coal dust explosions. According to the tests on their explosive properties, coal dusts from all the mines in Bosnia and Herzegovina present an explosion hazard. The measure applied in order to prevent the transmission of deposited coal dust explosion, in both methaneous and non-methaneous pits, is wetting. The prescribed content of solid non-combustible particles in coal dust which makes the dust non-explosive (defined by BH regulations)  is based on the figures taken from Polish regulations. In order to get the content of inert component in coal dust which will prevent the transmission of explosion, relevant for BH coals, a research was conducted on brown coal dusts from the three largest producing coal mines in BH. In this case, limestone rock dust was used to inert coal dust. Tests were conducted in accordance with the methods defined by EN 14034-1 and EN 14034-2. The tests conducted indicate that the content of inert component in BH coal dusts differs from the amounts defined by the adopted Polish regulations and, consequently, that BAS (Bosnian and Herzegovinian) standards need to be changed accordingly.

The medieval heritage in the context of cultural and historical tourism in Bosnia and Herzegovina is often neglected, but the practice of other European countries shows that this segment of history can be exploited on a very high level. This is primarily related to large objects in the form of fortresses, which generally have a dominant position over the surrounding area. In Bosnia and Herzegovina there are a large number of such forts (over a hundred), which testify to the turbulent medieval past. The fact is also that a large number of such facilities are in an inadequate state, but there are also those who may or already have their tourist function. Within this paper, four examples of medieval forts in Bosnia and Herzegovina - two in the Bosna River valley and two in Northeast Bosnia, from the aspect of their tourism attractiveness and degree of valorization have been analyzed. The methodology in this paper is based on detailed empirical research conducted through very extensive field observation, with the application of combined qualitative and quantitative comparative method of tourism valorization. The particular method used in the paper was based on the application of GIS cartographic models for adequate spatial representation of the study objects.

<p>The heating of residential and commercial premises in urban areas during winter periods is mostly performed by use of the heat energy which is distributed through central or city heating systems. Water, steam and gas are used as the basic working media in these heating systems. The thermal energy that is used in the city of Kakanj and its surrounding<br />settlements is produced in the Thermal Power Plant Kakanj and then delivered to the final consumers, which are usually located at relatively large distances from the heat source.<br />This paper describes the district heating system in Kakanj and the process<br />of heat energy distribution carried out by JP &bdquo;Grijanje&ldquo; d.o.o. Kakanj.<br /><br /></p>

The main aims of our study were (1) to determine the flora in the railway areas with special emphasis on the presence of neophytes ; (2) to describe the features of flora throughout analyses of taxonomic composition, chorotypes, life forms and the phytosociological character of species found at 15 stations in the Mediterranean and sub-Mediterranean areas of the Croatia and Bosnia and Herzegovina (SE Europe). According to their floristic composition, two broad groups of stations were recognized: i) stations in the most south of the area with higher annual precipitation and air temperature (cities of Ploce, Metkovic, Capljina, Mostar), and ii) stations in sub- Mediterranean rural areas located exclusively on the higher altitudes, including stations in three Dalmatian large cities (Zadar, Sibenik, Split). Altogether, 359 vascular plant taxa (336 species and 23 subspecies) were identified within 62 families and 230 genera. Therophytes, and Mediterraneans with a considerable proportion of Cosmopolitans were predominant. Neophytes contributed 14% of identified flora, the majority being invasive. In the phytosociological spectrum, the largest element was made up of taxa from Stellarietea mediae and Festuco valesiacae-Brometea erecti classes. The most studied railway stations, excluding those in large cities, retain a link with the floristic composition of the plant communities of its biogeographic context.