Abstract: A non-transitory computer readable recording medium stores instructions for an information processing device that comprises a processor, a display device, and an audio output device. The instructions cause the processor to execute: acquiring, from a distribution server, a game video; acquiring, from a management system, operation information regarding a player playing a game in the game video, and event information on an event having occurred in the game based on the operation information; combining the game video, the operation information, and the event information to generate a final video; and presenting the final video via the display device and the audio output device.

Abstract: A non-transitory computer readable recording medium stores instructions for an information processing device that includes a processor, a display device, and an audio output device. The instructions cause the processor to execute: acquiring a game video from a distribution server; identifying a game based on the game video; acquiring reference information for a viewer of the game video from a management system that stores various types of reference information such that a different type of the reference information is acquired depending on the game identified based on the game video; combining the game video and the reference information to generate a final video; and presenting the final video via the display device and the audio output device.

Abstract: An impeller for a centrifugal fan includes a main plate having a disc shape, a plurality of blades arranged along a circumferential direction about a center part of the main plate, and an outer ring having a ring shape connecting the respective blades. The outer ring is connected to tip end portions of the respective blades at a side of a fluid discharge opening, and each of the blades has a shape which is bent in a rotating direction of the impeller in a vicinity of the tip end portion.

Abstract: An impeller for a centrifugal fan includes a main plate having a disc shape, a plurality of blades arranged along a circumferential direction about a center part of the main plate, and an outer ring having a ring shape connecting the respective blades. The outer ring is connected to tip end portions of the respective blades at a side of a fluid discharge opening, and each of the blades has a shape which is bent in a rotating direction of the impeller in a vicinity of the tip end portion.

Abstract: A protection relay for determining whether or not a fault point of a power system exists in a predetermined range including a filter section for inputting sampling data of a voltage and a current in the power system to a digital filter having a predetermined transfer function and outputting a first voltage data and a first current data, and a second voltage data and a second current data normal to the first voltage data and the first current data, respectively, a calculator for calculating a predetermined measurement value based on the first and second voltage data, and the first and second current data at a first time and the first and second voltage data, and the first and second current data at a second time different from the first time, and an operation decision section for performing an operation decision based on the predetermined measurement value obtained by the calculator.

Abstract: A digital distance relay for deciding whether a fault point is within a stipulated operation region by obtaining an impedance to the fault point. The relay comprises: means for deciding whether the impedance is within a specified region by applying a value proportional to the relative phase; and means for deciding the fault point is within the stipulated operation region if: (a) when the load current indicates a sending direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, and the impedance is decided within the specified region; or (b) when the load current indicates a receiving direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, or the impedance is decided within the specified region.

Abstract: A protection relay for determining whether or not a faultal point of a power system exists in a predetermined range, comprises filter section for inputting sampling data of a voltage and a current in the power system to a digital filter having a predetermined transfer function and outputting a first voltage data and a first current data, and a second voltage data and a second current data normal to the first voltage data and the first current data, respectively, calculator for calculating a predetermined measurement value based on the first and second voltage data, and the first and second current data at a first time and the first and second voltage data, and the first and second current data at a second time different from the first time, and operation decision section for performing an operation decision based on the predetermined measurement value obtained by the calculator.

Abstract: A short-circuit distance relay has a short-circuit distance relay element that calculates a fault impedance from voltage and current which are introduced from a power system and that compares the fault impedance with a set impedance and uses the fault impedance comparison result within its protection zone. It calculates the amplitudes of the phase-to-phase differences of these voltage amplitudes and a sensitivity constant Vk.

Abstract: A digital distance relay for deciding whether a fault point is within a stipulated operation region by obtaining an impedance to the fault point. The relay comprises: means for deciding whether the impedance is within a specified region by applying a value proportional to the relative phase; and means for deciding the fault point is within the stipulated operation region if: (a) when the load current indicates a sending direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, and the impedance is decided within the specified region; or (b) when the load current indicates a receiving direction, the positive-phase resistance and reactance are within a stipulated region based on stipulated positive-phase resistance and reactance, or the impedance is decided within the specified region.

Abstract: A fault locator of a parallel transmission line includes a data receiving unit that receives the transmission and the received signal of each current differential relay provided with the transmission line, and measures the receiving timing of the transmission signal from a self-terminal. A fault detecting unit judges fault detection on the transmission line based on current data received with the data receiving unit, and outputs a starting signal. A data memory unit stores a predetermined fault generating range of a quantity of electric data of each self-terminal previously stored and an other side terminal when the quantity of electric data of each self terminal received with the data receiving unit and the other side terminal are stored and a starting signal is received.

Abstract: A protective relay system detects a first electric variable and a second electric variable of a power system to discriminate in a time series whether or not a fault portion of a line or equipment included in the power system exists within a predetermined range, so as to determine whether protection of the power system should be carried out. The system includes a digital filter for outputting a first difference electric variable data indicative of a difference between at least two sample data of plural sampling data of the first electric variable and a difference between at least two sample data of plural sample data of the second electric variable at plural sampling times of the time series. The system also includes an addition filter for outputting first and second additive electric variable data indicative of orthogonal vector data with respect to the first and second difference electric variable data.

Abstract: A frequency detecting method for detecting a frequency of an AC electric parameter of an electric power system. The frequency detecting method comprises a sampling step of sampling the AC electric parameter of the electric power system at a predetermined sampling period, an adding step of adding a sampling value v.sub.m sampled at a sampling time m and a sampling value v.sub.m-n sampled at a sampling time (m-n), thereby obtaining a sum w.sub.m of the sampling values, a first RMS value calculating step of calculating a first electric parameter E1 corresponding to a RMS value of the sum w.sub.m, a second RMS value calculating step of calculating a second electric parameter E2 corresponding to a RMS value of a time-differential value u.sub.m of the sum w.sub.m, a dividing step of dividing the second electric parameter E2 by the first electric parameter E1, and a frequency detecting step of detecting the frequency of the AC electric parameter from a division result (E2/E1).

Abstract: A digital type distance relay system comprises a sampling and hold circuit for sampling and holding the current in and voltage on a power transmission system, an A/D converter for receiving the outputs of the sampling and hold circuit through a multiplexer and converting the received analog quantities into corresponding digital quantities I and V, and a digital computer. The digital computer includes a data memory for memorizing the current I and voltage V and also a digital voltage V.sub.p having a predetermined relation to the voltage V, a setting memory for memorizing a setting value Z.sub.0 for setting a range of protection of the power transmission system, a ROM for memorizing a program for executing an arithmetic operation according to the formula .vertline.I.multidot.Z.sub.0 +K.sub.1 V.sub.p .vertline.-.vertline.I.multidot.Z.sub.0 -V-K.sub.2 V.sub.p .vertline..gtoreq.K.sub.0 as well as the constants K.sub.1 and K.sub.2 and minimum sensitivity value K.sub.0, and a CPU.