Abstract:The fluvial process is characterized by an intense meandering riverbed. The aim of this study was to perform a reconstruction of the lateral migration of a 15 km length of an active meandering river during the period 1930-2016. River morphological changes were analyzed and quantified from cadastral maps and aerial photographs as well as by geodetic survey and GIS. Hydrological characteristics and extreme hydrological events were evaluated in relation to bank erosion rate. The rate of bank erosion was markedly different from the long-term studied meanders, just like in the short-term period. During the 87 years of observation (from 1930 to 2016), the length of the Kolubara River was enlarged by 3.44 km. The average migration rate of the Kolubara River for monitored meanders in the period 1930-2010 was 1.9 m·year −1 , while in the period 2010-2016, the average migration rate was 3.3 m·year −1 . The rate of bank erosion was more intensive across the entire short-term period than during the longer period, and the maximum annual rate of bank erosion during the period 2010-2016 varied between 0.3 and 11.5 m. It is very likely that in the period from 2010, frequent discharge variations and rapid change of its extreme values caused more intensive bank erosion. These research results will be valuable for river channel management, engineering (soft and hard engineering), and planning purposes (predicting changes in river channel form) in the Kolubara River Basin.

Natural conditions of certain area imply to the complex influence of various elements of the environment (surface, relief, climate, water, vegetation type) and man, and knowledge of their recent state represents basis of an integrated approach in the land use planning. Analysis of natural conditions and processes in the Serbian-Macedonian border area is usually done through the valorization of natural potentials, but aspect of their limiting influence on the development of this territory - natural hazards assessment has remained unresolved. Degree of natural hazards vulnerability of a certain territory is an important factor in land use planning, because it represents a threat to the undisturbed development of a certain teritory. The basic idea of this paper is to provide multi-hazard assessment and the integral map of areas vulnerable to various types of natural hazards in Serbian-Macedonian border area. In this way seclusion of areas where natural conditions can represent the limiting factor for the development of the analyzed territory shall be performed

Геопросторна и временска дистрибуција кривичних дела разбојништва на територији Полицијске управе у Зрењанину 2009-2018. Апстракт: Разбојништво представља једно од кривичних дела са високим степеном опасности по живот и тело оштећеног, а свакако најнасилније и најопасније из групе имовинских кривичних дела. Разбојништво представља деликт чији негативан утицај као и карактеристике учинилаца приморавају целокупан систем безбедности да против овог феномена делује проактивно. Једна од претпоставки успешног деловања полиције против наведеног деликта јесте геоинформациона (аналитичка) подршка одлучивању у планирању и организовању свакодневних безбедносних задатака. У вези с тим, у раду су презентоване могућности мапирања криминала уз ослонац на ГИС технологије као један од сегмената полицијскообавештајног модела. У раду су презентовани резултати истраживања геопросторне и временске дистрибуције кривичног дела разбојништва на територији Полицијске управе у Зрењанину, који се огледају у идентификацији и анализи криминалних жаришта ("хот-спотова"), анализи услова и узрока настанка третираног вида имовинског криминала, предвиђању његовог будућег извршења и долажењу до информација потребних за осмишљавање и примену најефикаснијих превентивних, 

Riverbank erosion and lateral channel migration are important geomorphological processes which cause various landscape, socio-economic, and environmental consequences. Although those processes are present on the territory of Serbia, there is no available data about the soil loss caused by riverbank erosion for the entire country. In this study, the spatial and temporal dynamics of the riverbank erosion for the largest internal rivers in Serbia (Velika Morava, Zapadna Morava, Juzna Morava, Pek, Mlava, Veliki Timok, Kolubara) was assessed using remote sensing and GIS. The aim of this paper is to determine the total and average soil loss over large-scale periods (1923-2020), comparing data from the available sources (aerial photographs, satellite images, and different scale paper maps). Results indicated that lateral migration caused significant problems through land loss (approximately 2,561 ha), especially arable land, and land use changes in river basins, but also economic loss due to the reduction of agricultural production. Total and average soil loss was calculated for five most representative meanders on all studied rivers, and on the basis of the obtained values, certain regularities about further development and dynamics of riverbank movement are presented. A better understanding of river channel migration in this area will be of a great importance for practical issues such as predicting channel migration rates for river engineering and planning purposes, soil and water management and land use changes, environment protection.

By the use of digital cartographic visualization, a wide range of relevant data can be systematically integrated, presented and analyzed. In particular, this refers to the connection between thematic and topographic maps and their application in the study of the environment. The specific purpose of the map implies that in certain situations there is no clear difference between the thematic and topographic maps, that is, there is no clear boundary between the thematic and the topographic content of the representation. The paper points to the importance of modeling geoenvironmental data (topographic and thematic) for different scientific and practical research needs. Bearing in mind the global size of orienteering, the heterogeneity of the geoenvironment in which competitions and ways of orientation are organized, it is necessary to standardize this topic at the international level. The conducted experiment of cartographic modeling in the orienteering function has examined the possibilities of application of topographic inventory methods of geoenvironment for this purpose, the importance of using GPS devices for collecting geoenvironmental data and CAD software for cartographic visualization of the issues in question.