Abstract: A server includes a first statistic processor configured to calculate, for each of different types of screens displayed on a display; a first statistic value of display time of a screen of each type display on the display, to generate first statistic values corresponding to the different types of screens; a first determiner configured to determine, for each type of the screens, whether a user is concentrating on a screen of each type, based on, from among the first statistic values, a first statistic value calculated for the screen of each type; and a generator configured to generate a list including screen identification information for identifying, from among the different types of screens, a type of screen for which a corresponding determination result from the first determiner is affirmative.

Abstract: An information generation apparatus includes a feature information generator that generates feature information on transition to a first screen based on a log including a transition timepoint and identification information, the transition timepoint being a timepoint when a foreground screen transitioned from a second screen to the first screen among a plurality of screens displayed by a plurality of program modules that differ from each other, and the identification information identifying from among the program modules a first program module for displaying the first screen, an index value generator that generates an index value indicative of a degree to which the first screen draws attention from a user based on the feature information, and a determiner that determines based on the index value whether to use the identification information that identifies the first program module in a process of estimating the state of the user.

Abstract: A feature extraction device is a device that extracts a feature quantity to be input to a state estimation model for estimating a state related to a terminal where the activity is executed or a user of the terminal, which includes an acquisition unit that acquires activity history information indicating an execution history of the activity in a specified period of time and including time-series activity logs, an extraction unit that extracts co-occurrence relationship information indicating a co-occurrence relationship of activities in a specified period of time based on the activity history information, a generation unit that aggregates activity feature quantities indicating a feature of each activity based on the co-occurrence relationship information and generates an activity history feature quantity indicating a feature of the activity history information, and an output unit that outputs the activity history feature quantity as a feature quantity to be input to the state estimation model.

Abstract: An information generation apparatus includes a feature information generator that generates feature information on transition to a first screen based on a log including a transition timepoint and identification information, the transition timepoint being a timepoint when a foreground screen transitioned from a second screen to the first screen among a plurality of screens displayed by a plurality of program modules that differ from each other, and the identification information identifying from among the program modules a first program module for displaying the first screen, an index value generator that generates an index value indicative of a degree to which the first screen draws attention from a user based on the feature information, and a determiner that determines based on the index value whether to use the identification information that identifies the first program module in a process of estimating the state of the user.

Abstract: A feature extraction device is a device that extracts a feature quantity to be input to a state estimation model for estimating a state related to a terminal where the activity is executed or a user of the terminal, which includes an acquisition unit that acquires activity history information indicating an execution history of the activity in a specified period of time and including time-series activity logs, an extraction unit that extracts co-occurrence relationship information indicating a co-occurrence relationship of activities in a specified period of time based on the activity history information, a generation unit that aggregates activity feature quantities indicating a feature of each activity based on the co-occurrence relationship information and generates an activity history feature quantity indicating a feature of the activity history information, and an output unit that outputs the activity history feature quantity as a feature quantity to be input to the state estimation model.

Abstract: An object is to provide an information processing device capable of reducing power consumption for acquiring sensor values and preventing a loss of an important sensor value. A power saving model server (100) is an information processing device for controlling a plurality of sensors (acceleration sensor 201, etc.) that respectively detect a plurality of terminal states. The power saving model server (100) includes a sensor control unit (104) that stops an operation related to one or a plurality of sensors among the plurality of sensors on the basis of the plurality of terminal states.

Abstract: A server includes a first statistic processor configured to calculate, for each of different types of screens displayed on a display; a first statistic value of display time of a screen of each type display on the display, to generate first statistic values corresponding to the different types of screens; a first determiner configured to determine, for each type of the screens, whether a user is concentrating on a screen of each type, based on, from among the first statistic values, a first statistic value calculated for the screen of each type; and a generator configured to generate a list including screen identification information for identifying, from among the different types of screens, a type of screen for which a corresponding determination result from the first determiner is affirmative.

Abstract: An object is to provide an information processing device capable of reasonably presenting grounds of an estimation result using a state estimation model.

Abstract: Two opening through which a refrigerant runs are connected by a first connecting pipe and a second connecting pipe. One end of the first connecting pipe is connected to a first opening by a planar seal. Another end of the first connecting pipe is connected to one end of a second connecting pipe by a shaft seal. Another end of the second connecting pipe is connected to a second opening by a planar seal. An axial direction of a shaft seal is perpendicular to a plane that includes the first opening.

Abstract: A power converter includes a capacitor, a case, and a filler. The case houses the capacitor and includes a metal plate and a partition wall. The filler is interposed between the case and the capacitor. The metal plate is positioned between the capacitor and another electronic component, inside the power converter. Also, the partition wall separates the capacitor from the metal plate.

Abstract: This description relates to an electrical power converter including a series connection of two transistors, and provides a technology for suppressing increase in electrical current flowing through the transistors when the two transistors are turned on at the same time for some defective reason. An electrical power converter disclosed herein includes a series connection of a first transistor and a second transistor. The electrical power converter includes a clamp circuit configured to inhibit an abnormal rise in gate voltage, which is provided in at least either the first transistor or the second transistor. The clamp circuit includes a diode and a capacitor. The diode has an anode connected with a gate of the transistor. The capacitor has one electrode connected with a cathode of the diode and the other electrode connected with an emitter of the transistor.

Abstract: Two opening through which a refrigerant runs are connected by a first connecting pipe and a second connecting pipe. One end of the first connecting pipe is connected to a first opening by a planar seal. Another end of the first connecting pipe is connected to one end of a second connecting pipe by a shaft seal. Another end of the second connecting pipe is connected to a second opening by a planar seal. An axial direction of a shaft seal is perpendicular to a plane that includes the first opening.

Abstract: A power converter includes a capacitor, a case, and a filler. The case houses the capacitor and includes a metal plate and a partition wall. The filler is interposed between the case and the capacitor. The metal plate is positioned between the capacitor and another electronic component, inside the power converter. Also, the partition wall separates the capacitor from the metal plate.

Abstract: A switching frequency setting unit sets switching frequency of a switching element, based on both the temperature of a cooling medium which cools a DC-DC converter and the temperature of a switching element of the DC-DC converter. A switching controller controls the voltage conversion ratio of the DC-DC converter by controlling switching operation of the switching element at the set switching frequency.

Abstract: A PCU has an inside sealed by a case made of aluminum and a bottom plate. Interior space of the PCU accommodates an IPM, a control substrate, and a capacitor. The IPM is provided to abut an upper surface of the bottom plate. The control substrate is a rectangular plate having mounted thereon a control circuit including electronic components such as a gate driver, a transformer and the like, and is provided above the IPM. The capacitor is accommodated in a housing in a substantially parallelepiped form. A reflector made of aluminum of high thermal reflectivity and high thermal conductivity is provided on the entire lower surface of the capacitor.

Abstract: An electrically powered vehicle includes: a boost converter that boosts a power supply voltage and outputs a boosted voltage; an inverter that receives the boosted voltage from the boost converter and controls a rotating electric machine for travel; and a control device that performs control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both an accelerator and a brake are not operated to be on.

Abstract: A surge voltage generated by the switching operation of an IGBT element and voltage variation generated in an equivalent series resistance of a capacitor are superimposed on an input voltage of an inverter. The equivalent series resistance has a temperature dependence that a resistance value increases with a decrease in a capacitor temperature. The IGBT element has a temperature dependence that an element withstand voltage decreases with a decrease in an inverter temperature. When capacitor temperature is lower than a predetermined threshold value, a control device reduces an upper limit value of the input voltage by an amount corresponding to the voltage variation from its upper limit value at a high temperature, and controls a target voltage of a boost converter such that an output voltage does not exceed the upper limit value. Consequently, the allowable range of the surge voltage can be ensured.

Abstract: A switching frequency setting unit sets switching frequency of a switching element, based on both the temperature of a cooling medium which cools a DC-DC converter and the temperature of a switching element of the DC-DC converter. A switching controller controls the voltage conversion ratio of the DC-DC converter by controlling switching operation of the switching element at the set switching frequency.

Abstract: An electrically powered vehicle includes: a boost converter that boosts a power supply voltage and outputs a boosted voltage; an inverter that receives the boosted voltage from the boost converter and controls a rotating electric machine for travel; and a control device that performs control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both an accelerator and a brake are not operated to be on.

Abstract: A PCU has an inside sealed by a case made of aluminum and a bottom plate. Interior space of the PCU accommodates an IPM, a control substrate, and a capacitor. The IPM is provided to abut an upper surface of the bottom plate. The control substrate is a rectangular plate having mounted thereon a control circuit including electronic components such as a gate driver, a transformer and the like, and is provided above the IPM. The capacitor is accommodated in a housing in a substantially parallelepiped form. A reflector made of aluminum of high thermal reflectivity and high thermal conductivity is provided on the entire lower surface of the capacitor.