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Generating and modelling network traffic
(Wydawnictwo Politechniki Łódzkiej, 2014) Zarzycki, Maciej; Romanowski, Andrzej; Sierszeń, Artur; Sturgulewski, Łukasz
[...] This chapter presents a flexible and scalable approach to automated network adapter testing. It defines a model that can be used to develop complete testing scenarios that reflect the usage patterns seen in todays networks. The work also implements a tool capable of understanding the model and conducting the test scenario. This application is written with performance and ease of extending in mind so it should evolve to meet the the ever changing requirements.[...]
Generating and modelling network traffic
(Wydawnictwo Politechniki Łódzkiej, 2015) Zarzycki, Maciej; Romanowski, Andrzej; Sierszeń, Artur; Sturgulewski, Łukasz
[...] This chapter presents a flexible and scalable approach to automated network adapter testing. It defines a model that can be used to develop complete testing scenarios that reflect the usage patterns seen in todays networks. The work also implements a tool capable of understanding the model and conducting the test scenario. This application is written with performance and ease of extending in mind so it should evolve to meet the the ever changing requirements.[...]
GNS3 environment in the aspect of testing software for management and monitoring of computer networks
(Oficyna Wydawnicza Politechniki Wrocławskiej, 2009) Sierszeń, Artur; Sturgulewski, Łukasz; Janicka, Joanna
The GNS3 environment is a Graphical Network Simulator designed for emulating complex highquality networks that consist of Cisco networking equipment. Devices emulated in GNS3 employ real Cisco Internetwork Operating System (abbreviated as IOS). It allows to examine properties of the Cisco IOS and to verify configurations that need to be implemented later on the Cisco devices. The emulation process takes places in a virtual environment on a personal computer without the need of an actual physical Cisco hardware. The GNS3 is mainly used to visualize the design process of complex network topologies. Therefore, it uses the Scalable Vector Graphics to provide high-quality symbols of Cisco networking equipment. There is a great amount of software for monitoring and managing networks. This kind of applications should be tested before they are purchased. It is usually impossible in a typical network environment; it poses too many risks to the security and functionality ofa network. The Graphical Network Simulator 3 environment is a good solution for testing software and learning how software should be used.
Prediction of Natural Image Saliency for Synthetic Images
(Wydawnictwo Politechniki Łódzkiej, 2021) Rudak, Ewa; Rynkiewicz, Filip; Daszuta, Marcin; Sturgulewski, Łukasz; Lazarek, Jagoda
Numerous saliency models are being developed with the use ofneural networks and are capable of combining various features and predicting the saliency values with great results. In fact, it might be difficult to replace the possibilities of artificial intelligence applied to algorithms responsible for predicting saliency. However, the low-level features are still important and should not be removed completely from new saliency models. This work shows that carefully chosen and integrated features, including a deep learning based one, can be used for saliency prediction. The integration is obtained by using Multiple Kernel Learning. This solution is quite effective, as compared to a few other models tested on the same dataset.
Real-time GPS tracking and product security system
(Wydawnictwo Politechniki Łódzkiej, 2016) Sierszeń, Artur; Sturgulewski, Łukasz; Waktola, Selam
The goal of this study was to provide a system which uses Global Positioning System (GPS) to track mobile devices in real-time and secures properties using bar-code technology. Even though, there are similar solutions in the current market, they are most frequently operated by large third-party companies with an expensive service fees. Considering the high demand for using such systems and the exaggerated service fees; the proposed system of this study provides a free service using ordinary devices and technologies: The new system focused on specific user groups ( such as production, logistics and transport companies) for providing very rich functionalities with a proper security. Users of the new solution of this study are able to track their trucks ( or any mobile property) at real time, retrieving tracked history, planning routes and searching for any location throughout the world. Additionally it allows them to secure products while on transport using bar-code technology.
Symulacja komunikacji w sieciach bezprzewodowych typu ad-hoc w środowisku OMNeT++
(Wydawnictwo Politechniki Łódzkiej, 2010) Sierszeń, Artur; Sturgulewski, Łukasz
Artykuł przedstawia zastosowanie środowiska OMNeT++ w symulacyjnym badaniu komunikacji w sieciach bezprzewodowych typu ad-hoc. Testy nowo opracowywanych rozwiązań w zakresie trasowania ad-hoc są w realnym środowisku trudne do przeprowadzenia i bardzo kosztowne. Wspomniane środowisko umożliwia przeprowadzanie doświadczeń z szerokiego zakres sieci bezprzewodowych: od osobistych (ang. Personal Area Network), przez metropolitarne (Wi-Fi/WaMAX), aż po globalne (GSM, czy łączność satelitarna).
Wykorzystanie Cisco Packet Tracer do nauczania podstawowych zagadnień transmisji danych głosowych w sieciach komputerowych
(Wydawnictwo Politechniki Łódzkiej, 2010) Sierszeń, Artur; Sturgulewski, Łukasz
Artykuł przedstawia zastosowanie środowiska Cisco Packet Tracer w nauczaniu obsługi technologii przesyłu połączeń głosowych w sieciach komputerowych. Wyspecjalizowane urządzenia służące do budowy infrastruktury sieciowej umożliwiającej obsługę przesyłania połączeń głosowych są wciąż drogie i trudno dostępne. Konieczność pracy w wyspecjalizowanych i drogich laboratoriach utrudnia studentom i kursantom pozalekcyjne uzupełnienie wiedzy i przeprowadzanie własnych eksperymentów w tym zakresie. Wspomniane środowisko jest rozwiązaniem tych problemów, przez co cieszy się coraz to większym uznaniem.