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With ever growing population and shrinkage of agricultural land, food security is an extremely important research topic. Besides human activates, natural disasters such as flood, drought also play adverse effect on food productivity. Understanding impact of these disaster on crop yield and making early estimation could help planning for any global food crisis. Among various available crop yield estimation...
The Remote Sensing Flood Crop Loss Assessment (RF-CLASS) is a system of geospatial Web services that provide comprehensive services to decision makers in assessing flood-induced crop loss. It serves a series of vector-based geospatial data. Traditionally, these data are visualized on the Web through a open Web Map Service (WMS) while the geospatial data are kept in either a geo-database or a vector-feature...
Statistics show the volume of Earth Observation (EO) data increases in the exponential level during the past decade. As the new generation computing platform to meet the big data challenge, cloud computing significantly facilitates the large-scale EO data processing depending on its powerful computing capability. In this paper, we propose a Cloud WPS architecture integrating the cloud computing environment...
Agriculture is one of the most affected sectors by the flood. Spaceborn remote sensing is widely used for flood mapping and monitoring in recent decades. Some applications such as flood crop loss assessment require data with fine temporal resolution to monitor short-lived flood. MODIS is providing remote sensing data with 1–2 days temporal resolution which has frequently been used for flood mapping...
The paper reports on a mass-charge spectrometry study of ion beams extracted from the plasma of a vacuum arc discharge with a compound lanthanum hexaboride cathode. The elemental composition of the ion beams was analyzed using a magnetic separator. The vacuum arc operated in repetitive pulsed mode with a current amplitude of 140 A, full width at the base of ∼350 μs, and frequency of 2 Hz. The ion-extracting...
Boron plasmas are widely used in various ion beam and plasma technologies, including semiconductor ion doping. Of interest is also its use for deposition of hard coatings and surface modification to enhance the performance and lifetime of machine parts and tools. The paper reports on the generation of boron-rich plasma in a short high-current pulsed vacuum arc with a lanthanum hexaboride cathode,...
The generation of highly charged metal ions in vacuum arc plasmas is of interest to plasma physicists because of the possibility to extract new data on the ionization in cathode spots. In practical terms, e.g., in metal ion sources, increasing the ion charge provides a proportional increase in ion energy at a given accelerating voltage. In the last two decades, various techniques have been used to...
During the last decade the high power impulse magnetron sputtering technique (HiPIMS) has been developed intensively. A self-sputtering mode can be realized using HiPIMS, for a limited number of materials used as a sputtering target, which is characterized by a fraction of target material ions in the discharge plasma at least more than a half. Pure boron is almost nonconductive and therefore conventionally...
the unified dynamic rate system of generation and transmission based on technology of condition monitoring for overhead transmission line was introduced. Theories, components and structure of the system were analyzed. Condition monitoring technique and primary constrain condition applied in the system were discussed. The technical economy was proved in theory. The field test results and effects during...
The report presents experimental results on the parameters of vacuum arc plasmas produced with composite Sn-Pb cathodes differing in atomic composition. The plasma was generated on a Mevva-V.Ru ion source. The mass-charge state of the plasma was studied using a time-of-flight spectrometer. The plasma parameters were compared with those for pure Sn and Pb cathodes. It is shown that the ion fraction...
We report on ongoing technology activities on the Elegant Breadboard for the LOCUS telescope and its 1.15THz receiver. LOCUS is a Low-Earth orbit small satellite (150kg category) with the objective of linking observations of climate, the upper atmosphere and space weather by performing simultaneous high spectral resolution measurements of molecular signatures of molecules which drive the thermal exchange...
Traditional method of visiting field and surveying farmers to estimate crop yield has been considered inefficient and impractical especially in cases when fields are not easily accessible. Remote sensing techniques, therefore, has been utilize to overcome these obstacles with good success. Normalize Difference Vegetation Index (NDVI) based models are considered to be most effective and utilized technique...
Remote sensing derived NDVI data is fundamental to crop monitoring and crop yield estimation research. The usefulness of NDVI relies on reducing noise caused by varying atmospheric conditions such as cloud, haze, and dust as well as by sensor viewing geometry. Different techniques have been applied for noise reduction of composite NDVI products. However, the noise reduction for daily NDVI remains...
WOFOST (WOrld FOod STudies) is a well-known, widely applied simulation model to analyze quantitatively the growth and production annual field crops that was originally developed for crops in European countries. It is the base model for Monitoring Agricultural ResourceS (MARS) Crop Growth Monitoring System (CGMS) in operational use for yield estimation in European Union. The model is of great potential...
It is well known that automatic control of any process implies continuous or infrequent monitoring process parameters. At the ore dressing mills and metallurgical plants, such parameters may include composition of feedstock, fluxes, reagents, intermediate products, final tailings and wastewater. Usually, this information is supplied by the automated analytical monitoring system (AAMS), in which the...
We demonstrate effective time domain detection and differentiation of single particles and cells with a simple radio-frequency interferometer. Solutions of particle mixtures (∼4 μm silica and ∼10 μm polystyrene) and cell mixtures (viable and non-viable yeast cells, normal and cancer human breast cells, healthy and malaria infected red blood cells) are infused into a microfluidic channel, separately,...
The CW/263 GHz gyrotron is developed at IAP RAS for future application as microwave power source in DNP/NMR spectrometers. The new experimental facility with computerized control was built to test this and subsequent gyrotrons. The maximum power up to 1 kW in 15 kV/0.4A operation regime has been obtained. The power about 10W, which looks enough for spectroscopy, was realized in low current 14 kV /...
The electric drive system is one of the most important parts of electric vehicles (EVs), whose function is the conversion between electric energy and mechanical energy. Switched reluctance motor (SRM) has the features of simple construction, high starting torque, wide speed range, high efficiency and high reliability which are appropriate for EVs drive system. Firstly, instantaneous torque control...
Electromagnetic limited-angle torque motors (LATMs) which have a limited angular movement less than 180 degrees are widely applied in industry, particularly for positioning tasks. Compared with common rotating motors, LATMs have many advantages such as simple structure, high reliability, and uncomplicated control mode. In general, radial-flux permanent-magnet LATMs have two conventional types which...
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