A5087906151- Analog and Mixed-Signal Circuit Design
- Soil erosion and sediment transport
- Hydrology and Watershed Management Studies
- Sensor Technology and Measurement Systems
- Advancements in PLL and VCO Technologies
- Hydrology and Sediment Transport Processes
- Radio Frequency Integrated Circuit Design
- Neuroscience and Neural Engineering
- Advancements in Semiconductor Devices and Circuit Design
- Aeolian processes and effects
- Low-power high-performance VLSI design
- Soil and Water Nutrient Dynamics
- Advanced MEMS and NEMS Technologies
- Soil and Unsaturated Flow
- Advanced Control Systems Design
- Soil Moisture and Remote Sensing
- 3D Modeling in Geospatial Applications
- Precipitation Measurement and Analysis
- Flood Risk Assessment and Management
- CCD and CMOS Imaging Sensors
- Remote Sensing and LiDAR Applications
- Land Use and Ecosystem Services
- Soil Mechanics and Vehicle Dynamics
- Integrated Water Resources Management
- Digital Filter Design and Implementation
Czech Technical University in Prague
2010-2024
Universidad Santo Tomás
2022
Polytechnic University
2020
College of Polytechnics Jihlava
2010-2019
Brno University of Technology
2006-2016
Namık Kemal University
2013
TU Bergakademie Freiberg
2000
Soil erosion by water is one of the most severe soil degradation processes. Splash initial stage water, resulting from destructive force rain drops acting on surface aggregates. Apart rainfall properties, constant physical properties (texture and organic matter) are crucial in understanding splash erosion. However, there lack information about effect variable such as content condition (seal formation) The objective present study was to determine how affected under simulated rainfall. changes...
This paper addresses changes in land use and the spatial distribution of units their influence on soil erosion risk two areas with a different geomorphology historical political development: an intensively-used lowland agricultural watershed central Bohemia, Czech Republic, partially hilly wine-producing municipality northern Austria. Our analyses sum up development these study sites, which forces driving structure differ due to background countries since World War II. A definition landscape...
Optical disdrometers can be used to estimate rainfall erosivity; however, the relative accuracy of different is unclear. This study compared three types optical laser-based quantify differences in measured characteristics and develop correction factors for kinetic energy (KE). Two identical PWS100 (Campbell Scientific), one Laser Precipitation Monitor (Thies Clima) a first-generation Parsivel (OTT) were collocated with weighing rain gauge (OTT Pluvio2) at site Austria. All underestimated...
The sustainable management of crops in areas at risk soil health degradation is crucial, particularly given their vulnerability the current context climate change. Decision Support Tools (DSTs) designed specifically for farmers are essential assessing risks, analyzing impact agricultural practices, and defining strategies to mitigate negative impacts on health. In response this need, TUdi DSTs were developed (in app web format), integrating functionalities tailored address different types...
Rainfall erosivity is a critical parameter for soil degradation assessment. It especially important in areas prone to erosion due frequent or intense rainfall events. typically quantified through the EI30 index, which combines rainfall's kinetic energy (E) with its maximum 30-minute intensity (I30). data high temporal resolution (e.g., 5-minute) are often limited availability, particularly across large spatial scales. Gridded products usually provide half-hourly hourly and frequently used...
One of the main outputs TUdi project is a catalogue strategies and measures for improving soil quality. This document (alone or in combination with other outputs) serves farmers to find suitable methods quality their soil.This aims present restoration fertilization feedback from stakeholders EU China. The consists list practices degradation processes. processes were defined multidisciplinary approach by scientists different fields (soil physics, hydrology, plant environmental sciences,...
Rainfall simulators are indispensable in soil hydrology and erosion research, offering controlled conditions to investigate water erosion. Despite their widespread use, the absence of standardized methodologies leads variability design rainfall characteristics across simulators. To address this challenge, key parameters such as drop size distribution terminal velocity, uniformity spatial raindrops over sprinkled surface area (Christiansen coefficient; CU), kinetic energy (KE), intensity used...
Soil erosion is a major challenge in agriculture, leading to land degradation, reduced fertility, and water pollution. Effective management crucial for controlling runoff, limiting sediment transport, sustaining soil productivity. Among various conservation practices, vegetative buffer strips are particularly effective, enhancing infiltration, slowing trapping sediment.This study assessed the impact of different grass strip lengths on retention under controlled conditions. Experiments were...
The environment of the Czech Republic has long been significantly affected by anthropogenic influences that negatively impact condition landscape ecosystems. One such influence is accelerated soil erosion and excessive sediment loading watercourses, primarily from agricultural landscapes. This process reduces fertility, degrades water quality, increases transfer contaminants into aquatic systems.This study analyzes transport in Elbe basin using monitoring data Labe (Elbe) Vltava (Moldau)...
This paper introduces interesting active element and its application in the field of square triangular wave generators. Active element, so-called Z-Copy Controlled Gain Voltage Differencing Current Conveyor (ZC-CG-VDCC), has availability three mutually independently electronically adjustable parameters (transconductance, intrinsic resistance current input terminal gain between two terminals) that are very popular for control applications today. In addition, a proposed device utilizes useful...
A modified version of voltage differencing current conveyor (VDCC) and its performance in detail is presented this paper. Modified VDCC, so-called z-copy controlled gain (ZC-CG-VDCC), offers interesting features from adjustability point view. The active element allows independent electronic control three adjustable parameters: intrinsic resistance input terminal, transconductance the output stage which not possible case conventional VDCC. characteristics proposed CMOS implementation designed...
Abstract Preventing and reversing soil degradation is essential to maintaining the ecosystem services provided by soils guaranteeing food security. In addition scientific community, it critical engage multiple stakeholders assess degree of mitigation strategies' impact meet United Nations' Sustainable Development Goals, European Union's Common Agricultural Policy, other national international goals. A semi‐structured questionnaire was distributed across countries participating in EU...
Accelerated soil erosion is a major threat to soil, and there are great variations in the rate of over time due natural human-induced factors. The temperate forest zone Russia characterized by complex stages land-use history (i.e. active urbanization, agricultural development, land abandonment, etc.). We have for first estimated rates WaTEM/SEDEM model (rainfall erosion) regional (snowmelt past 250 years (from 1780 2019) 100-km2 study site Moscow region Russia. calculations were made on...
This paper deals with operational transconductance amplifiers (OTAs) -based active voltage-mode biquad filter electronically reconfigurable transfer functions. Due to utilization of the very favourable devices, this design is ready for immediate CMOS design. Presented filtering solution contains four elements where each them directly used reconnection-less change function or modification including electronic control quality factor and tuning. The offers availability all-pass, high-pass,...
In the European Union, soil erosion is identified as one of main environmental threats, addressed with a variety rules and regulations for water conservation. The by far most often officially used tool to determine Universal Soil Loss Equation (USLE) its regional adaptions. aim this study use three different USLE-based approaches in test catchments Czech Republic, Germany, Austria differences model results compare these revised USLE-base map. adaptations implementation techniques result...
Several behavioral models of current active elements for experimental purposes are introduced in this paper.These based on commercially available devices.They suitable tests current-and mixed-mode filters, oscillators, and other circuits (employing current-mode elements) frequently used analog signal processing without necessity onchip fabrication proper element.Several methods electronic control intrinsic resistance the proposed discussed.All predictions theoretical assumptions supported by...