Kubota Corporation

Sumitomo Electric Industries, Limited

Yasuhiro Nishida

Hirokazu Sasamoto

Yuji Fukuda

Hiroaki Nakagawa

Ryota Hamamoto

Daiki Abe

Shin-ichi Akai

Keiichiro Fujita

Takeru Ibuki

Sakura Sasakura

A farming support system includes a position detector provided in one of a work vehicle and a rake implement attachable to the work vehicle, and a processor configured or programmed to obtain, based on information about the rake implement, a positional relationship between a reference point to be positioned by the position detector and a swath to be formed by the rake implement, in a local coordinate system that is defined for the work vehicle and the rake implement attached thereto. The processor is configured or programmed to generate swath position information indicating a position of the swath in a geographic coordinate system, based on information indicating a position of the reference point in the geographic coordinate system detected by the position detector during forming of the swath, and the positional relationship.

Farming support system, position information generation method, computer program, and processing device

A control method for a fan of a work vehicle includes supplying, when an engine is started, a first current to a solenoid of a variable relief valve such that the hydraulic fluid flows by a first flow rate, supplying, when a rotational speed of the engine becomes larger than a first rotational speed threshold value, a second current larger than the first current to the solenoid such that the hydraulic fluid flows by a second flow rate smaller than the first flow rate to reduce the rotational speed of the fan, and supplying, when the rotational speed of the engine becomes larger than a second rotational speed threshold value that is larger than the first rotational speed threshold value, a current to the solenoid to change the rotational speed of the fan, the current corresponding to a temperature of liquid flowing in the work vehicle.

Work vehicle and control method for fan of work vehicle

A yield calculation system comprises a position sensor configured to detect a position. A baler comprises a bale chamber in which crop material is to be formed into a bale, a volume measurement sensor provided in the bale chamber and configured to measure a volume of the bale in the bale chamber, the volume corresponding to the position detected by the position sensor, and a moisture measurement sensor provided in the bale chamber and configured to measure a moisture amount in the bale, the moisture amount corresponding to the position detected by the position sensor. Circuitry is configured to calculate, based on the volume of the bale and the moisture amount corresponding to the position, a yield corresponding to the position by excluding the moisture amount from an amount of the bale.

Yield calculation system, yield map generation system, method of calculating yield for baler, and computer readable storage medium

In a semi-insulating gallium arsenide single crystal containing at least one of deep acceptor impurities and at least one of deep donor impurities and having a resistivity of at least about 10.sup.6 .OMEGA..multidot.cm at 300 .degree. K., (1) at least one of the deep donor impurities is oxygen, the oxygen concentration in the single crystal being at least about 4.times.10.sup.16 cm.sup.-3, while the silicon concentration in the single crystal being simultaneously at most about 2.times.10.sup.15 cm.sup.-3, (2) at least one of the deep acceptor impurities is chromium, the chromium concentration in the single crystal being within a range of about 3.times.10.sup.15 to about 3.times.10.sup.17 cm.sup.-3 and (3) at least one of tellurium, tin, selenium and sulfur is contained as another shallow donor impurity than silicon so to satisfy the relationship of N.sub.AA &gt;N.sub.D -N.sub.A &gt;-N.sub.DD wherein N.sub.AA represents the sum of concentrations of the deep acceptor impurities including chromium, N.sub.DD represents the sum of concentrations of the deep donor impurities including oxygen, N.sub.D represents the sum of concentrations of the shallow donor impurities including electrically active lattice defects and N.sub.A represents the sum of concentrations of the shallow acceptor impurities including electrically active lattice defects.

Semi-insulating gallium arsenide single crystal

Growing community of inventors

Sakai, Japan

Yasuhiro Nishida