SWS Academic Research eLibraryEarth & Planetary Sciences

Browse

Search Results

Now showing 1 - 3 of 3

Author publications

Alexandru Dobre

3 linked publication records

Author: Alexandru DobreYear: 2017clear all
Showing 1-3 of 3 records
1
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Informatics, Geoinformatics and Remote Sensing
Publication

ACTIVE IMAGE AUTHENTICATION AND FORGERY LOCALIZATION FOR MOBILE DEVICES

(STEF92 Technology, 2017-06-20, Robert Alexandru Dobre, Radu Ovidiu Preda, Ionut Pirnog, Cristina Oprea)

Show more

The paper presents a method for authenticating images that were shot using a mobile phone. Thanks to the newest advances in integrated cameras, smartphones represent one of the most popular ways to take a photograph. A picture could be critical evidence in a trial and, with the abundance of free editing software, a forgery is easy to achieve. A method to secure and test photographs for authenticity was developed, implemented as a mobile application, tested and detailed in this paper. The watermarking algorithm is ...

Informatics2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Informatics, Geoinformatics and Remote Sensing
Publication

PID CONTROL OF AN INERTIA WHEEL INVERTED PENDULUM

(STEF92 Technology, 2017-06-20, Vlad Niculescu, Robert Alexandru Dobre)

Show more

The paper consists of a method to implement a control system algorithm for an inertia wheel inverted pendulum. Like any control system application, the transfer function of the plant should be known in order to design the proper controller. The key point of this paper is that the behaviour of the plant is consider unknown, so a system identification should be done at first. Even if the classical way to obtain the transfer function is by writing the physical equations, the result obtained from system identification...

Informatics2017
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Energy and Clean Technologies
Publication

REDUNDANT STEERING SYSTEMS FOR ARTICULATED VEHICLES

(STEF92 Technology, 2017-06-20, Toma Cojocaru-Greblea, Daniel Bontos, Nicolae Vasiliu, Alexandru Dobre)

Show more

The paper is devoted to the performance of a new combination between a classical closed center hydraulic feedback steering unit and an electrohydraulic servo system based on the modern generation of digital servo valves. This type of combination may represent a solution for autonomous agricultural machinery based on the high-level technologies. The research is generated by increasing world population requesting more supplies on one hand, and the obvious decreasing of rural inhabitants, augmented by the translation...

Ecology and Environmental Protection2017
Showing 1-3 of 3 records
1