Napredak tehnologije izrade senzora i pametnih uređaja sa ugrađenim senzorima, omogućili su razvoj koncepta bežičnih senzorskih mreža, kao i interneta stvari, čiju posebnu formu predstavljaju Mobile Crowd-Sensing (MCS) sistemi. Realna primena ovih sistema kroz prikupljanje velike količine mernih podataka za potrebe donošenje odluka i automatizaciju procesa uz uštedu novca i resursa omogućava poboljšanje kvaliteta života ljudi, lakše i ekonomski isplativije nadgledanje, nadzor i kontrolu pojava u okruženju. Ovaj pregledni rad daje opis MCS koncepta, uz poseban osvrt na tehnike lokalizacije, i uporednu analizu MCS u odnosu na klasične WSN sisteme.
Presented study introduces the software implementation of the Georeferenced Information System of power grid infrastructure in the vicinity of State Road IB 34 in the Republic of Serbia. The exact locations of power substations and traces of HV overhead lines are used in the form of Geospatial data (GeoJSON), in order to determine the optimal power supply of road infrastructure and to avoid interference with the HV power grid. Appropriate georeferenced and technical data can greatly improve the quality and reliability of newly planned low-voltage power installations needed for safe public transport. This will give rise to more economical and timesaving supervision of the state road IB 34 power installation system.
Usage of electrical energy obtained from the renewable sources are rapidly increasing. Distributed solar systems will be widely used. The paper propose solution for monitoring and management of distributed Photo Voltaic (PV) systems from the integrated center. The main parts of the system are cloud infrastructure at the Data Center and Internet of Things (IoT) devices at distributed sites. Also, networks that are used for communication between main parts are important piece of the proposed solution.
The goal of this paper is to compare the file system performance of physical operating system and Docker as container-based virtualization using its mechanism for persisting data with Volumes and Bind mounts. The importance of virtualization and its popularity with container-based virtualization is mentioned with an emphasis on OS-type virtualization. In addition, this article contains a detailed description of the Dockers mechanism for persistent data, its operating mode and the difference between Volumes and Bind mounts. The main purpose of this paper is the comparison of Docker Volumes and Bind Mounts file system performance. Thus, we have selected FileBench, one of the best open-source benchmarks for testing file system capabilities.
Security landscape in 5G networks differs from the previous generations of wireless networks, mainly due to the emergence of new applications and implemented technologies that require new security concept in order to provide efficient and secure connectivity. Thus, 5G security architecture has been built using security-by-design approach which takes into account basic challenges and risks. While such architecture is evidently robust with a number of advanced security measures and mechanisms, increasing diversity of connected devices, services and networking technologies means new and more complex security threats and vulnerabilities Therefore, this paper aims at identifying gaps and potential shortcomings in the existing 5G security framework. On that basis, recommendations for addressing these issues are specified so that secure and trustworthy implementation and operation of 5G networks would be ensured.
