Abstract: A system comprising a self-propelled device and an accessory device. The self-propelled device includes a spherical housing, and a drive system provided within the spherical housing to cause the self-propelled device to roll. When the self-propelled device rolls, the self-propelled device and the accessory device magnetically interact to maintain the accessory device in contact with a top position of the spherical housing relative to an underlying surface on which the spherical housing is rolling on.

Abstract: A self-propelled device includes a spherical housing and an internal drive system including one or more motors. The internal drive system acts to provide power to an interior surface of the spherical housing, thereby causing the self-propelled device to move. A biasing assembly can be included to enable the internal drive system to continuously engage an inner surface of the spherical housing. An external accessory magnetically interacts with interior magnetic components through the spherical housing such that as the self-propelled device rotates and maneuvers, the accessory component maintains a positional relationship to a top portion of the self-propelled device.

Abstract: The configurations of photovoltaic system and methods thereof are provided. The proposed photovoltaic system includes a PI-INC MPPT controller using a constant-frequency variable-duty (CFVD) control and guided by an Ipv-Vpv curve and a Ppv-Vpv curve.

Abstract: A self-propelled device includes a spherical housing and an internal drive system including one or more motors. The internal drive system acts to provide power to an interior surface of the spherical housing, thereby causing the self-propelled device to move. A biasing assembly can be included to enable the internal drive system to continuously engage an inner surface of the spherical housing. An external accessory magnetically interacts with interior magnetic components through the spherical housing such that as the self-propelled device rotates and maneuvers, the accessory component maintains a positional relationship to a top portion of the self-propelled device.

Abstract: A self-propelled device includes a spherical housing and an internal drive system including one or more motors. The internal drive system acts to provide power to an interior surface of the spherical housing, thereby causing the self-propelled device to move. A biasing assembly can be included to enable the internal drive system to continuously engage an inner surface of the spherical housing. An external accessory magnetically interacts with interior magnetic components through the spherical housing such that as the self-propelled device rotates and maneuvers, the accessory component maintains a positional relationship to a top portion of the self-propelled device.

Abstract: A self-propelled device includes a spherical housing and an internal drive system including one or more motors. The internal drive system acts to provide power to an interior surface of the spherical housing, thereby causing the self-propelled device to move. A biasing assembly can be included to enable the internal drive system to continuously engage an inner surface of the spherical housing. An external accessory magnetically interacts with interior magnetic components through the spherical housing such that as the self-propelled device rotates and maneuvers, the accessory component maintains a positional relationship to a top portion of the self-propelled device.

Abstract: A system comprising a self-propelled device and an accessory device. The self-propelled device includes a spherical housing, and a drive system provided within the spherical housing to cause the self-propelled device to roll. When the self-propelled device rolls, the self-propelled device and the accessory device magnetically interact to maintain the accessory device in contact with a top position of the spherical housing relative to an underlying surface on which the spherical housing is rolling on.

Abstract: A system comprising a self-propelled device and an accessory device. The self-propelled device includes a spherical housing, and a drive system provided within the spherical housing to cause the self-propelled device to roll. When the self-propelled device rolls, the self-propelled device and the accessory device magnetically interact to maintain the accessory device in contact with a top position of the spherical housing relative to an underlying surface on which the spherical housing is rolling on.

Abstract: A system comprising a self-propelled device and an accessory device. The self-propelled device includes a spherical housing, and a drive system provided within the spherical housing to cause the self-propelled device to roll. When the self-propelled device rolls, the self-propelled device and the accessory device magnetically interact to maintain the accessory device in contact with a top position of the spherical housing relative to an underlying surface on which the spherical housing is rolling on.

Abstract: The configurations of photovoltaic system and methods thereof are provided. The proposed photovoltaic system includes a PI-INC MPPT controller using a variable-frequency constant-duty (VFCD) control and guided by an Ipv-Vpv curve and a Ppv-Vpv curve.

Abstract: A double density memory device including two synchronous dynamic random access memory chips, each having multiple data (DQ) signals, multiple address signals and multiple control signals. The chips are mounted in a package that provides interconnection terminals for conducting electrical signals to and from the memory chips. An interconnecting network is contained within the package to provide paths for electrically connecting the chip contact pad on each chip corresponding to a specific control or address signal to one interconnection terminal for that signal for both chips so that the control and address signals for the two chips are tied together. For each DQ signal, the chip contact pad on each chip corresponding to that DQ signal is connected by the interconnecting network to a separate interconnection terminal. The trace length between a chip contact pad and the interconnection terminal to which it connects for each signal is substantially the same.

Abstract: A Real Time Locating System (RTLS) hygiene management and monitoring system for individuals and companies to manage and monitor the hygiene of their surroundings. In some embodiments of the invention, RTLS is used to monitor and manage cleanliness of rooms and surfaces and the location of cleaning supplies and cleaning personnel. The invention provides improved efficiency and quality of hygiene services. For instance, the invention can enable prioritization of cleaning, improve efficient use of cleaning supplies and cleaning personnel, track short and long term cleaning operations, and provide insight into ineffective cleaning.

Abstract: The current convertor comprises a current converting device and a sliding cover. The current converting device comprises a casing, a current converting module arranged inside the casing, two conductive terminals electrically connected to the current converting module, and a first sliding module disposed on the casing. The conductive terminals are partially exposed from the casing. The sliding cover has a second sliding module having two thru holes. The second sliding module is slidably disposed on the first sliding module for enabling the sliding cover to slide between a first position and a second position relative to the casing. When at the first position, the conductive terminals pass through the thru holes of the sliding cover for inserting into the conventional outlet, and when at the second position, the conductive terminals are arranged in a space surrounded by the sliding cover and the casing.

Abstract: Compounds represented by formula: Wherein X, Y and Z are as defined herein, pharmaceutically acceptable salts thereof, and related compounds, are suitable for use in treating or preventing a Flaviviridae viral infection in a host.

Abstract: Compounds represented by formula I: or pharmaceutically acceptable salts and solvates thereof, wherein A, B, B?, X, Y, R1, R1?, R2, R2?, R3, R3?, R5, R5?, R6, m, n, or p are as defined herein, are useful for treating flaviviridae viral infections.

Abstract: The current convertor comprises a current converting device and a combinative plug. The current converting device comprises a casing and a current converting module arranged in the casing. The casing has at least one track extended from an outer surface of the casing along a sliding direction. The combinative plug comprises an insulating body and a conductive pin set disposed on the insulating body. The insulating body has a quick releasing portion conformed in shape to the track. The quick releasing portion is detachably sliding on the track of the casing along the sliding direction for maintaining the relative position between the current converting device and the combinative plug and for establishing electrical connection between the conductive pin set and the current converting module.

Abstract: A Real Time Locating System (RTLS) hygiene management and monitoring system for individuals and companies to manage and monitor the hygiene of their surroundings. In some embodiments of the invention, RTLS is used to monitor and manage cleanliness of rooms and surfaces and the location of cleaning supplies and cleaning personnel. The invention provides improved efficiency and quality of hygiene services. For instance, the invention can enable prioritization of cleaning, improve efficient use of cleaning supplies and cleaning personnel, track short and long term cleaning operations, and provide insight into ineffective cleaning.

Abstract: Compounds represented by formula I or pharmaceutically acceptable salts thereof, wherein A, B, B?, X, Y, R1, R2, R2?, R3, R3?, R4, R4?, R5, R5?, m, n, or p are as defined herein, are useful for treating flaviviridae viral infections.

Abstract: Compounds represented by formula I: or pharmaceutically acceptable salts and solvates thereof, wherein A, B, B?, X, Y, R1, R1?, R2, R2?, R3, R3?, R5, R5?, R6, m, n, or p are as defined herein, are useful for treating flaviviridae viral infections.