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The increasing number of urban areas conditioned by increasing number of people has led to significant innovations in the concept of living. The implementation and widespread use of modern technologies have enabled the rapid development of the smart cities. As population growth is accompanied by an increase in the number of cars and other vehicles, one of the most important problems facing cities is the development of an efficient parking system. Today's biggest problem in big cities is finding free parking spot, but also it is important to consider problems that arise in form of: longer time spent on cruising for parking, which increases pollution through the emission of CO2, more frequent traffic accidents, and a higher level of requests regarding the maintenance of traffic infrastructure. In order to successfully solve these problems with the adequate use of modern and advanced technologies, it is necessary to establish an effective planning system by the innovative parking management. This paper aims to show and compare some of the most important parking solutions in modern cities, as well as the use of advanced technologies for this purpose.

Many applications including Industry 4.0, Smart City, Building Management, Car of the Future, Smart Home and Connected Health use IoT (Internet of Things). IoT is changing the way businesses and consumers, even whole cities interact through connected devices. In the future, with Internet of Everything (IoE), every entity (people, machines, animals, cars, buildings, etc.) will have possibilities for direct interconnections. Forecasts show that over 20 billion connected devices will reach the market by 2020. Ninety percent of cars are expected to be connected, too. These wide range of industry and consumer applications have growing needs for IoT and many common elements such as decentralization, real-time requirements, sensory or measurement capabilities, a communications layer and Big Dataanalytics/intelligence. Besides these well know common elements, also in many applications exit the need for payment. This additional requirement is known as the idea of IoT payments. In this paper is present some of challenges in implementation of IoT payments.

UDK 631.4:632.954; 633.1:632.954(497.6) The aim of the study is to present the elements which must be considered while determining the risk of the mobility of the herbicides. Herbicides used for maize production have the special eco toxical significance and special risk because some are potentially mobile, they are used on the large surfaces during the rainy period and near rivers. Behaviour of the herbicides in the environment, particularly in the soil is very complex. It does not depend only on the characteristics of the herbicide, but on the many factors of the environment which are very variable. Regardless of this fact, there are experimentally determined physical-chemical indicators for each herbicide that show the possible behaviour of herbicides in the environment. Studied physical-chemical indicators of herbicide behavior are: Distribution Coefficient (Kd); Organic Carbon Partitioning Coefficient (Koc); Time of the Semi-Decomposition (DT50); Water Solubility (S); Groundwater Ubiquity Score (GUS); Henry's Law Constant (Kh), Vapor Pressure (PV) and the Dissociation Constant (pKa). Namely, herbicides, in larger or smaller measure, have “leaching potential“, which is ability to reach the underground water. One of the basic criteria for evaluating the herbicide ability to reach the underground water is related to indicators of mobility and persistency (DT50) herbicides, but neglecting some other criteria in that evaluation such as the amount of applying, characteristics of the soil and the aim of the crop growth. According to the EPA criteria, for the herbicides used in maize production in Bosnia and Herzegovina (BiH), the “trigger“ value will indirectly indicate if the herbicides have large leaching potential.