National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Economical LoRaWAN security device
Varhola, Oliver ; Zeman, Václav (referee) ; Škorpil, Vladislav (advisor)
This master thesis contains a proposal of the solution for economical and energy saving security device with its communications part in a LoRaWAN network. Theoretical part of the thesis describes the most widespread LPWAN networks, i.e. the networks for low-power devices, such as NB-IOT based on LTE technology, Sigfox and LoRaWAN. Also briefly analyses security threats in case of the interference exploitation of the communication channel and describes LoRaWan security in detail. In the practical part there is hardware, power, mechanical solution implemented including the cover of the device. Realization of the software part covers, which types of events should be operated, power saving methods and mesage sending inverval are described. All requirements were implemented at application layer utilizing - LoRaWAN network server and virtual machine applications: MQTT broker, NoreRED, OpenHAB and cloud database InfluxDB with visualisation of the data in Grafana application.
Finančná analýza spoločnosti GKR Praha Engineering s.r.o.
Kostovčík, Tibor ; Eisler, Jan (advisor) ; Lédl, Petr (referee)
The aim of the thesis is closing theoretical approaches of financial analysis and implement it into the practical part. The thesis is divided into four parts and nine chapters. The core chapter is Analýza výkazu ziskov a strát. General summary of the thesis can be found in chapter Záver. The annex and list of used literature are also contained.

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