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Assessment of the technical condition of the air conditioning system of a passenger aircraft during operation

The air conditioning system is one of the most important life support systems in an aircraft, therefore the assessment of technical condition and maintenance of reliability at an appropriate level are of great importance in ensuring flight safety. Thesis evaluates the technical condition of the air conditioning system of short flight passenger aircraft. To solve the tasks, the author has developed a prototype of a short flights passenger transportation aircraft and proposed an air conditioning system scheme and calculated the structural reliability of the air conditioning system for one flight shift. This work has practical application and the approaches described can be used to assess the reliability and technical condition of the aircraft during exploitation.

Author: Darja Ivanova

Supervisor: Sergey Junusov

Degree: Bachelor

Year: 2024

Work Language: Latvian

Study programme: Aviation Engineering

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Company development using e-commerce technologies

The first part is devoted to theoretical considerations on the topic of e-commerce, basic principles and development strategies, obstacles and problems faced by companies when implementing regulation and international standards.In the second part of the study, the cosmetics market in Latvia was studied, the main actors of the cosmetics industry were analyzed, trends were analyzed and the impact of socio-cultural and economic factors on consumer choice was assessed.In the third part, the author analyzed SIA "BEAUTY PLACE GROUP OU Filiāle Latvija", got acquainted with its history, main types of services and products, evaluated the advantages and disadvantages of the competition, conducted a survey and analysis, and also identified the company's problems.In the fourth part, based on the results of the survey, the author developed a development project plan with the use of e-commerce technologies, set innovative goals, assessed resources, predicted results and further development opportunities.The final part summarizes the results and provides recommendations for the company's future development.

Author: Daņiils Urbans

Supervisor: Oksana Skorobogatova

Degree: Bachelor

Year: 2024

Work Language: Latvian

Study programme: Business and Management

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Comparative analysis of RPL protocol objective functions impact on energy consumption in low-power and lossy networks

This bachelor thesis explores the impact of different RPL protocol objective functions on energy consumption in low-power and lossy networks. Given the critical role of low-power and lossy networks in applications like environmental monitoring, industrial automation, and smart cities, optimising energy consumption is paramount. Using the Contiki-NG operating system and the Cooja network simulator, this study conducts a comparative analysis of two primary objective functions: Objective Function Zero and Minimum Rank with Hysteresis Objective Function. Simulations are performed under 18 network scenarios including different node densities (10, 30, 50), node positioning, and receive ratios. The findings indicate that Objective Function Zero generally consumes less energy, particularly in high-density networks and environments with high packet delivery ratios. Conversely, Minimum Rank with Hysteresis Objective Function may be more suitable for dynamic and unpredictable environments despite its higher energy consumption. This research offers practical recommendations for selecting objective functions to optimise the energy consumption of constrained networks, contributing to the development of more sustainable IoT solutions.

Author: Deniss Bogdans

Supervisor: Jeļena Baranova

Degree: Bachelor

Year: 2024

Work Language: English

Development of an Alternative Mean of Compliance for inspecting passenger door stops on Embraer ERJ - 145 using Fluorescent penetrant Non-destructive Testing method.

This bachelor thesis focused on Development of an Alternative Mean of Compliance (AltMoC) for Inspecting the passenger door stops from Embraer ERJ - 145 aircraft Using Non-Destructive Testing Fluorescent penetrant method. The main goal of this work is to simplify the task with the help of a developed inspection for checking a structural component. A structural component is subject to fatigue and physical stress on it, as well as corrosion. Detailed detection of the smallest damage and metal fatigue. The developed AltMoC is aimed at significantly accelerating work processes, making inspection cheaper as well as having a simplified and clear process using penetrant testing. Having carried out research, the Author, carefully select the appropriate method for inspecting a structural component based on the type of material from which it is made, considering its’ its physical and chemical properties. Develop the correct sequence of actions in the instructions. Thanks to this, the workflow time and the risk of errors occurred due to Employees' misunderstanding significantly reduced.

Author: Deniss Zaharovs

Supervisor: Iyad Alomar

Degree: Bachelor

Year: 2024

Work Language: English

Study programme: Aviation Engineering

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Research on effective finding of network anomalies in Intrusion Detection Systems using ML/DL methods

In this paper, the process of testing datasets and ML/DL methods using the Weka platform in order to obtain results of their effectiveness and how high the accuracy of detecting network anomalies they provide is described. During the experiment, many ML/DL algorithms and the most common datasets (KDD99, NSL-KDD, UNSW-NB15) were analyzed, as a result of which it was revealed that the best result of detection accuracy and time required on the experiment was produced by the NSL-KDD dataset.

Author: Dmitrijs Bulaks

Supervisor: Jeļena Baranova

Degree: Bachelor

Year: 2024

Work Language: English

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