A5015575251- Insect and Arachnid Ecology and Behavior
- Plant and animal studies
- Animal Behavior and Reproduction
- Noise Effects and Management
- Hearing Loss and Rehabilitation
- Aeroelasticity and Vibration Control
- Acoustic Wave Phenomena Research
- Neurobiology and Insect Physiology Research
- Facilities and Workplace Management
- Plant and Biological Electrophysiology Studies
- Structural Engineering and Vibration Analysis
- Advanced Optical Imaging Technologies
- Marine animal studies overview
- Olfactory and Sensory Function Studies
- Mechanical and Thermal Properties Analysis
- Image Processing Techniques and Applications
- Wind and Air Flow Studies
- Slime Mold and Myxomycetes Research
- Vibration Control and Rheological Fluids
- Teleoperation and Haptic Systems
- Soft Robotics and Applications
- Advanced MEMS and NEMS Technologies
- Dynamics and Control of Mechanical Systems
- Material Properties and Applications
- Animal Vocal Communication and Behavior
Czech Technical University in Prague
2012-2024
Center for Economic Research and Graduate Education – Economics Institute
2024
Czech University of Life Sciences Prague
2022
Bridge University
2022
Okinawa Institute of Science and Technology Graduate University
2022
University of Kansas
2022
Termites (Blattodea: Isoptera) have evolved specialized defensive strategies for colony protection. Alarm communication enables workers to escape threats while soldiers are recruited the source of disturbance. Here, we study vibroacoustic and chemical alarm in wood roach Cryptocercus 20 termite species including seven nine families, all life-types, feeding nesting habits. Our multidisciplinary approach shows that vibratory signals represent an ethological synapomorphy termites Cryptocercus....
ABSTRACT Alarm signalling is of paramount importance to communication in all social insects. In termites, vibroacoustic and chemical alarm are bound operate synergistically but have never been studied simultaneously a single species. Here, we inspected the functional significance both channels Constrictotermes cyphergaster (Termitidae: Nasutitermitinae), confirming hypothesis that these not exclusive, rather complementary processes. natural situations, predominantly attracts soldiers, which...
The article focuses on the determination of acoustic properties (sound transmission loss, sound absorption and coefficient under plane wave excitation) membrane-type specimens by means a combination incident pressure membrane surface displacement information, measuring with microphone laser Doppler vibrometer. An overview known measurement methods theoretical background proposed so-called mobility-based method (MM) is presented. was compared conventional for loss in impedance tube, both...
The use of materials based on the mycelial growth recycled is widely studied. absorbent properties such composites can be found in a number articles. However, this one focuses possibility using mycelium-based for design sound diffusers. Diffusion parameters were determined form normalized and non-normalized diffusion coefficient free field according to ISO 17497-2. measured results show that mycelium construction diffusers promising. are not best, which due architectural design. . For...
Theoretical foundation of sound power determination from a radiating surface using volume velocity and acoustic radiation matrix (ARM) is well established in the literature. However, detailed experimental investigation accuracy this method over wide frequency band has not been presented. In study, ARM analyzed thoroughly to identify factors that can affect calculated power. To do so observed closely as main parameter responsible for Further experiments are performed calculate results were...
Only a few bird species are known to produce low-frequency vocalizations. We analyzed the display vocalizations of Western Capercaillie males kept in breeding centers and identified harmonically structured signals with fundamental frequency 28.7 ± 1.2 Hz (25.6–31.6 Hz). These components temporally overlap Whetting phase (96% its duration) they significantly contribute distinct vocal expression between individuals. The resulting model discrimination analysis classified 67.6% (63%,...
Abstract Termites (Blattodea: Isoptera) have evolved specialized defensive strategies for colony protection. Alarm communication enables workers to escape threats while soldiers are recruited the source of disturbance. Here, we studied vibroacoustic and chemical alarm in wood roach Cryptocercus 20 termite species including seven nine families, all life-types, feeding nesting habits. Using a multidisciplinary approach, found that vibratory signals represent an ethological synapomorphy...
This paper deals with the effect of secondary actuator positioning in an active structural acoustics control (ASAC) experiment. The ASAC approach is based on minimizing sound radiation from structures to far field by controlling vibrations. In this article a rectangular steel plate structure was assumed one attached it. As actuator, specially designed piezoelectric stripe used. We studied position pattern and radiated vibration, without control. total power also measured. experimental data...