0000000001069279

AUTHOR

Iulian Bouleanu

showing 3 related works from this author

Adaptivity in E-Learning Systems

2018

Abstract The differentiated designing of lessons from the virtual environment can have beneficial effects on the student. In order to achieve the objectives proposed in the course, the content should not only meet the student’s expectations but must be designed adaptively according to the defining elements of each learner. Adaptability in content is an essential factor in maintaining motivation, involving the student, and engaging him/her in the study. The paper analyses approaches for the adaptive building of content by identifying the elements that can influence the achievement of the objectives - motivation, expectation, learner’s style, a priori knowledge

Military policyE-learning (theory)Mathematics educationSociologyBusiness managementInternational conference KNOWLEDGE-BASED ORGANIZATION
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Low-Cost Sensor Based on SDR Platforms for TETRA Signals Monitoring

2021

The paper presents the design and implementation of an electromagnetic field monitoring sensor for the measurement of the Terrestrial Truncked Radio (TETRA) signals using low-cost software defined radio (SDR) platforms. The sensor includes: an SDR platform, a Global Positioning System (GPS) module and a hardware control module. Several SDR platforms having different resolutions of the analog–digital converters were tested in the first phase. The control module was implemented in two variants: a fixed one, using a laptop, and a mobile one, using a Raspberry Pi. The tests demonstrate the following achieved performances: instantaneous acquisition band of 5.12 MHz

business.product_categoryComputer sciencePhase (waves)TP1-118502 engineering and technology01 natural sciencesBiochemistryArticleAnalytical Chemistryelectromagnetic field monitoringSoftware portabilitylow-cost0202 electrical engineering electronic engineering information engineeringTETRA signalsElectrical and Electronic EngineeringInstrumentationsoftware defined radiobiologyDynamic rangebusiness.industryChemical technology010401 analytical chemistry020206 networking & telecommunicationsSoftware-defined radioConvertersbiology.organism_classificationAtomic and Molecular Physics and Opticsreal-time sensor0104 chemical sciencesLaptopGlobal Positioning SystemTetrabusinessComputer hardwareSensors
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HF Noise Measurements Based on Software Defined Radio Dual Receiver and Two Orthogonal Inverted Vee Antennas

2020

Increasing the data transfer rate in the High Frequency (HF) range involves enlarging the bandwidth of the channel from the standard value of 3 kHz to values of 6, 12, 24, 48 and even 96 kHz. Real-time evaluation of the noise power in the channel under such conditions is essential. This paper aims to implement an automated system for real-time measurement of noise in the HF range. It is composed of two Software Defined Radio (SDR) synchronized receivers and two orthogonal Inverted Vee antennas. Testing the system demonstrates its ability to distinguish between noise and signals generated as a result of human activity. Preliminary results of measurements performed in an urban location are co…

Noise powerNoise measurementComputer sciencebusiness.industry020209 energyAcoustics020208 electrical & electronic engineeringBandwidth (signal processing)02 engineering and technologySoftware-defined radioNoise (electronics)Software0202 electrical engineering electronic engineering information engineeringbusinessCommunication channelData rate units2020 International Conference and Exposition on Electrical And Power Engineering (EPE)
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