Hardware

Abstract—This paper describes an experimental setup for detecting
electric fields using electrooptic lithium niobate (LiNbO
)
sensors and coherence modulation of light. In this detection
scheme, the sensed electric fields modulate optical delays, which
are introduced by LiNbO
coherence modulators when associated
to low-coherence optical sources. The optical delays act as
coherence-multiplexed carriers of the sensed electric fields and
are transmitted through an optical fiber channel. At the receiver,
the electric fields are detected by measuring the auto-correlation
of the received light by using two-wave interferometers, which are
matched to the introduced optical delays on the sensing devices.

Collision processes between a single gold atom and a gold cluster are investigated by means of ab initio techniques. The targets we consider are minimum energy 13 gold atom clusters. The kinetic energy of the projectile and its impact parameter are chosen within a range such that the three regimes we are mainly interested in studying (fusion, scattering and fragmentation) are realized. The results of the collision processes are treated using density functional theory molecular dynamics (DFT-MD), analyzed in detail, and compared with previous work, which was carried out using phenomenological potentials and classical molecular dynamics. The differences between classical MD and DFT-MD are quite significant.

The development of the Computer-Aided Design (CAD) system FORTU-FEM, which is based on the Finite-Element Method (FEM), is considered in the paper. Unlike other CAD systems, which does not allow to its users to change the schema of calculation, FORTU-FEM has the open architecture and allows to engineers to develop the various methods for analysis of non-standard constructions. The example of application of FORTU-FEM for calculation of the tensional and the deformed states of constructions from elastomers is given.

Introduction of modern computer technologies, namely the development of interactive virtual objects in the learning process can achieve significant results in terms of dynamic update of the educational process organization, its forms and methods; it will also give students an opportunity to actively participate in the preparation and implementation of these changes.Development of an interactive model of architectural tour to Berdyansk State Pedagogical University with the help of three-dimensional graphics is actual because, firstly, in the present time there is no visualization of this architectural complex from the aesthetic and historical perspective. The University building has an interesting history, and we as the heirs need to preserve the memory of it. Secondly, there's a cognitive and informative component: you can always help an applicant, a student, a lecturer or a visitor to plunge into the atmosphere of the educational establishment, see the plan of the lecture rooms, and show to a general viewer the architectural elements and to interact with many elements of the interior space. Thirdly, this project can be used in advertising and career-oriented work. And it is an affordable and easy resource due to intensive development of computer technologies, one of the important directions of which is Internet-based technologies.

the techniques used to compress data allow a bigger transfer of information due to the processing that is performed, by means of numerical and statistical transformations, it is possible to represent the same information in a smaller space. One of the main problems that exist in communications systems lies in the use of the channel. The current studies focus on the study of the characteristics and effects of the noise present in the channel and the disturbances generated in the transmitted information. This paper studies the efficiency of the Run Length Encoding (RLE) compression algorithm in a wired communication channel, by measuring some parameters it is possible to determine the efficiency of the use of the channel, using the RLE algorithm, a methodology is used for the study, which allows determining the efficiency of the use of the channel, prior to the use of ©*

In this article an experimental system of sensor network for monitoring physical variables applied to green technology in conjunction with internet of things (IoT) is presented. This, in a controlled ambient, that can guarantee the development and growth of the plants (exemplary/specimen). This application is focused on agriculture. Using Wireless Sensor Network (WSN) has a promising future due to current technical advances and its almost unlimited applications. This work propose WSN topologies, the measurement methodology, the sensors distribution and the visualization of the registered data in function of the area monitored, the communication protocol established by  Wi-Fi and the reads of the environmental temperature (ET), environmental humidity (EH) and ground humidity (GH) are registered and displayed in the web, during the registry of this measurements the data is analyzed and processed to perform relevant actions oriented to the control of physical variables at the monitored...

This paper reports the effect of applying strain to the birefringent optical fiber segment in anall fiber acousto-optic transducer. Such transducer is based on a Sagnac interferometer. The system is an acousto-optic modulator (AOM), used for sensing acoustic signals in the audible frequency range. The AOM uses an optical source (laser) at 1550 nm. Key-Words: -Transducer, acousto-optic, voice, transmittance, audible, interferometer, Sagnac,optic fiber, strain function.