Ing. Yelena Trofimova, Ph.D.

Projects

Software Architecture of Distributed ICT Systems

Program
Studentská grantová soutěž ČVUT
Code
SGS16/123/OHK3/1T/18
Period
2016
Description
The project covers 3 topics in the software architecture of distributed ICT systems: 1) Integration of the current architecture of the non-dedicated cluster system Clondike with an implementation of a distributed log in Apach Cassandra with the aim to realize sophisticated management of process migration and security management of the whole cluster. 2) Research of optimal policies of trust establishment and selfishness limitations in ad-hoc and sensor networks with the aim to find the required mix of requirements for computational tasks and requirements for forwarding and transmission of data within the network. The result will serve as a base for developping a method that will take into account not only message routing and trust establishment among modules of the network, but efficiency with respect to power awareness as well. 3) Research of the extension of the concept of Software Defined Networks (SDN) to dynamic circuit switching in optical networks with dense wave multiplex (DWDM) and research of impact of dynamic insertion and deletion of DWDM channels on the monitored parameters of the optical route (especially the impact of various signal levels of added channels on the quality of the DWDM signal at various parts of the route) with the aim to provide more efficient services for network applications requiring direct access to the photonic network layer.

Trust Establishment and Selfishness Limitation in Wireless Ad-Hoc and Sensor Networks

Program
Studentská grantová soutěž ČVUT
Code
SGS15/121/OHK3/1T/18
Period
2015
Description
Ad-hoc and sensor networks are distributed wireless networks in which each device generally fulfils two functions: a task (or set of tasks) and relaying (helping other devices to communicate). All these devices are powered by batteries and thus the two functions are colliding in goals. The devices should relay but also conserve power. Too helpful for others results in quick battery depletion. Too selfish results in a disconnected network. There can be a threshold between helpfulness and selfishness and this is the goal of this project is to find this zone of fairness.

Videostream Hunter

Program
CESNET - Fond rozvoje
Provider
Another domestic provider
Code
686R1/2021
Period
2021 - 2023
Description
Currently, a large amount of multimedia content (audio/video) is offered through online platforms, typically at the request of the user (Video-on-Demand). This practice is quite common today for paid services (eg online video rentals), but it also appears on data sharing platforms (eg. Ulož.to), where the legality of the origin of the data cannot be guaranteed. There are even platforms where it can even be argued (see the document "On the Net") that your own content, regardless of origin, can be extremely harmful (eg. terrorism, child pornography, etc.). The whole thing is further complicated by the fact that the majority of this traffic is currently encrypted using the HTTPS protocol, which makes it very difficult to identify. The purpose of the project is to search for ways and mechanisms for finding the fingerprint of specific video streams and then identify them from the network traffic reported via the NetFlow / IPFix protocol. The solution of the project presupposes the creation of a common research infrastructure over a distributed data storage (created from SSD or NVMe disks) between the two university workplaces, the interconnection of which will be realized through the Cesnet backbone network.