Sirvi Autor "Villemson, Jan, juhendaja" järgi

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Ajaakendega transpordiülesande lahendamine
(2005) Jaeger, Jaanus; Villemson, Jan, juhendaja
Deepfakes for Paper Vote Privacy Defence
(Tartu Ülikool, 2025) Habanen, Anette; Villemson, Jan, juhendaja; Laur, Sven, juhendaja; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Arvutiteaduse instituut
The recent rise of artificial intelligence (AI) solutions has also had a significant impact on electoral processes. Most notably, deepfakes created by generative AI applications can (and have been) used to spread misinformation during the campaigns, but they can also be used for cyberattack automation, biased social media bots, etc. This thesis instead presents a positive use case for generative AI in manipulating video material required as proof of voting by potential coercers. For this, I have created a pipeline that takes a video of a voting ballot and replaces its critical content (in our case, the digits on the ballot). To achieve this, a YOLO model is used to find the digits, a WavePaint image inpainting model is used to cover up the old digits, and a separate image of the new digits is used to place it into the video. Additionally, I have implemented the prototype application in the form of a webpage.
Diskreetse logaritmi probleemi entroopiline teisendus ja selle rakendused
(Tartu Ülikool, 2023) Hankewitz, Brett Johannes; Laan, Valdis, juhendaja; Villemson, Jan, juhendaja; Tartu Ülikool. Matemaatika ja statistika instituut; Tartu Ülikool. Loodus- ja täppisteaduste valdkond
2023. aastal avaldas D. Gligoroski artikli, kus ta konstrueeris uue algebralise struktuuri nimega entropoid, mille abil oleks võimalik olemasolevaid krüptograafilisi skeeme teisendada postkvant-turvalisteks. Käesolevas bakalaureusetöös tutvustame entropoide ja seletame lahti vastava teisenduse. Anname ülevaate entropoidide baasteooriast, anname edasi vajalikke krüptograafilisi teadmisi ning kirjeldame entroopilist teisendust ja selle rakendusi
E-election Processes on the Example of the Parliamentary Elections of the Republic of Estonia
(Tartu Ülikool, 2024) Ütsik, Lauri; Krips, Kristjan, juhendaja; Villemson, Jan, juhendaja; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Arvutiteaduse instituut
The scope of this master's thesis is the modelling of the processes of Estonian e-elections in the BPMN modelling language, from the obligation to organise elections arising from the Constitution of the Republic of Estonia to the last sub-process, which is the destruction of the system disk, key shares and e-votes used for e-election procedures. The more precise focus of the work is aimed at auditing e-elections. The process modelling is followed by the analysis part, in which inconsistencies between the instructional material and the actual situation are pointed out, and opportunities for improvement are proposed. The research was carried out using the example of the Parliamentary elections of the Republic of Estonia.
Path planning and learning strategies for mobile robots in dynamic partially unknown environments
(2006) Heero, Kristo; Kruusmaa, Maarja, juhendaja; Villemson, Jan, juhendaja
Plokiahela kasutamine avalikes e-teenustes Eesti näitel
(Tartu Ülikool, 2024) Pajoma, Pirgit; Villemson, Jan, juhendaja; Krips, Kristjan, juhendaja; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Arvutiteaduse instituut
Today, Estonia is a country with a highly developed digital infrastructure, where most important public services are available online. It is often claimed that one of the keys to success in the development of Estonian public e-services is the use of blockchain. This master's thesis examines in more detail the actual scope of blockchain use in Estonian public e-services. The research methods used were a systematic literature analysis, which resulted in a literature review, and interviews, which resulted in an overview of the actual use of blockchain in three Estonian public e-services. This research helps to better understand whether and how the blockchain is integrated into Estonian digital services and what is the added value of its use to the systems.
Обзор уязвимостей продуктов Macromedia Flash
(Tartu Ülikool, 2004) Зайцева, Анастасия; Villemson, Jan, juhendaja; Tartu Ülikool. Loodus- ja täppisteaduste valdkond; Tartu Ülikool. Arvutiteaduse instituut