Abstract. Long-range, low-power, wide-area network modulation technique (LoRa) is already used in a variety of fields, such as agriculture and healthcare, to reliably transmit small amount data above ground. Research measuring the reliability signal strength LoRa devices underground, however, rare. The purpose this study test from shallow-depth, underground conditions. experiments are divided i...

Understanding variation in SW (seed weigh) is of major importance in understanding SY (seed yield) variation. The objective of this study was to determine factors such as SN (seed number) per unit area, SFD (seed filling duration) and SFR (seed filling rate) and temperature, LAI (leaf area index), LAD (leaf area duration), above-ground dry matter, CGR (crop growth rate), leaf dry matter re...

JAXA has been developing an aircraft noise propagation model by applying the GF-PE method. To predict aircraft noise propagation precisely, it is necessary to assume meteorological condition and ground property in the sound field appropriately. In order to study how to model those conditions in the predictions and to verify the model, outdoor sound propagation experiments were conducted in Nove...