Ovidiu Banias

Ovidiu Banias, Camil Octavian Milincu

In the last two decades, Interactive White Boards (IWBs) have been widely available as a pedagogic tool. The usability of these boards for teaching disciplines where complex drawings are needed, we consider debatable in multiple regards. In a previous study, we proposed an alternative to the IWBs as a blackboard augmented with a minimum of necessary digital elements. The current study continues our previous research on hybrid design tools, analyzing the limitations of the developed hybrid system regarding the perceived quality of the images being repeatedly captured, annotated, and reprojected onto the board. We validated the hybrid system by evaluating the quality of the projected and reprojected images over a blackboard, using both objective measurements and subjective human perception in extensive and realistic case studies. Based on the results achieved in the current research, we conclude that the proposed hybrid system provides good quality support for teaching disciplines that require complex drawings and board interaction.

Camil Octavian Milincu, Otilia Alexandra Tudoran, Paul Florin Tarce et al.

The way that design is being taught is continuously changing under the pressure of the transition from analogical to digital environments. This becomes even more important as the novelty and the alleged superiority of the digital world is used as a marketing tool by competing universities. Even though in some fields of application this approach is desirable, some particular aspects of teaching design and architecture make this transition debatable. The advantages of drawing on blackboards over drawing on whiteboard surfaces in regards of line aesthetic and expression possibilities were previously identified, along with the complementary necessary features for improvement. This study showcases a proof of concept in digitally augmenting a blackboard surface. The system allows the capturing, processing and making real time projections of images over the blackboard surface as trace references. Such a hybrid system, along with providing support for design and architecture related presentations and discussions could also mediate the contradictory relation towards technology that students and teachers have.

Ovidiu Banias, Daniel-Ioan Curiac

Sensor Networks technologies had proved their great practicability in the real world, being just a matter of time until this kind of networks will be standardized and used in the field. We focus on security issues in Distributed Sensor Networks like useful cryptosystems, attacks, preventing and detecting possible attacks, describing state of the art in domain and proposing new methods for further investigation

Ovidiu Banias, Daniel-Ioan Curiac, Radu-Emil Precup

In this paper we present a sensor network based architecture for urban traffic management, hierarchically structured on three layers: sensing, processing& aggregation and control. On proposed architecture we define traffic decongestion methods for vehicles and also for pedestrians. Finally, we presented a case study on how traffic control can be implemented in a concrete situation, based on the proposed architecture, pointing future directions of development.

Daniel-Ioan Curiac, Florin Dragan, Ovidiu Banias et al.

Sensor networks technologies had proved their great practicability in the real world, being just a matter of time until this kind of networks will be standardized and used in the field. This paper presents a new approach to secure the transmission of information in sensor networks and is based on a combined hardware-software architecture using three components: a) a mechanism to provide sensor authentication and secret key distribution; b) AES symmetrical encryption algorithm with predistributed keys; and c) an attack detection stratagem using an expert system based on the prediction of the values provided by the sensors, followed by reducing the sensor trust coefficient.