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  • Author: Andrzej Lewiński x
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Andrzej Lewiński, Tomasz Perzyński and Lucyna Bester

Abstract

The paper deals with computer support of safety analysis of railway control system corresponding to each stage of its life cycle, especially design, testing and maintenance. It is related to the reliability estimation of actually designed, manufactured or exploited from several years railway control systems. But is possible to analyze with computer support the occurrence of critical situations using FTA method, estimation of probability connected with such situations and verification of obtained results using simulation methods. The paper is final report of research works realized in Electronics&Diagnostics Department in Faculty of Transport and Electrical Engineering UTH in Radom.

Open access

Andrzej Lewiński, Zbigniew Łukasik and Andrzej Toruń

Abstract

The work deals with the rules of safety communication applied in public, open data transmission systems according to obligatory standard PN-EN 50159-2011. The innovative systems manufactured by chosen manufactures applying such solutions and elaborated concepts of future systems giving new functional possibilities with regard to existing safety standards assigned to railway control and management.

Open access

Daria Dranka-Bojarowska, Adam Lewiński, Andrzej Grabarczyk and Paweł Lampe

Abstract

Primary adenocarcinoma in the esophageal gastric graft is a rare complication diagnosed in patients with long-term survival. Most data concerning the diagnosis and treatment of patients with metachronic cancer in esophageal grafts is derived from Japan and South Korea. The diagnosis of cancer in esophageal gastric grafts in the European countries is rare.

The study presented a case of a 66-year old male patient who, 30 months after an esophageal squamous cell cancer resection, was diagnosed with adenocarcinoma of the esophageal gastric graft. Despite control follow-up after the esophagectomy, cancer in the esophageal graft was detected during the stage that prevented performing radical surgery. The study presented the recommended diagnostic procedures and treatment options for esophageal gastric graft cancer, as well as review of available literature data