Journal of Naval Sciences and Engineering

1-22

Authors: Gülçin SEDEFOĞLU, Gülşen AKMAN

Nowadays competition among companies is rapidly increasing with the progress of technology. In order to stand out in this competition environment, companies need to be renovated in their own fields. Many companies use lean manufacturing techniques to achieve this renewal. This study was performed in a company operating in the automotive industry. In this study, the production line which will be improved is determined by using the Analytical Hierarchy Process method. Next, Value Stream Mapping has been applied to the determined product line. We revealed the current situation of the production line by drawing current state mapping. Second, the future state mapping is drawn up to solve the problems presented in the current state mapping, and an action plan was presented for improvements.

32-53

Authors: İbrahim GÜLATAŞ, Selçuk BAKTIR

The Unmanned Aerial Vehicle (UAV) technology is a rapidly emerging technology and it has found widespread usage. While UAVs are still in their development phase without any existing commonly accepted standards for their underlying technologies and their forensic investigation, they have an increasing record of criminal usage. This urges the research community to develop techniques to detect and prevent illegal usage of UAVs. With this work, we present a seven-phase UAV digital forensics investigation framework to standardize the investigation process for UAVs. We tested our framework on the DJI Phantom III Professional UAV which is one of the most popular commercial UAVs in the market. Three kinds of forensic artifacts are found on the sample UAV and these artifacts are examined deeply. Two of the artifacts are log files stored as binary files and the other artifact is the EXIF header of the images that are captured by UAV's onboard camera. As a result of our investigation, we are able to regenerate the flight path of the UAV. As a final step of our research, we compare our investigation framework with the existing framework on the literature and reveal the differences of both frameworks.