Abstract: An aerial vehicle including a body, a first ranging device, a second ranging device and a controller is provided. The first ranging device is disposed on the body and is configured to detect a first distance between the first ranging device and the reflector. The second ranging device is disposed on the body and is configured to detect a second distance between the second ranging device and the reflector. The controller is configured to obtain an included angle between a direction of the body and the reflector according to the first distance and the second distance.

Abstract: An additive, liquid-crystal composition and a liquid-crystal display using the additive are provided. The additive includes a first additive molecule having a structure represented by formula (I): wherein Ri1, Ri2, Ri3, Ai1, Ai2, Zi, m1 and m2 are defined as in the specification.

Abstract: A method and a system for vehicle head direction compensation are disclosed. The method includes the following. A relative position between each of a plurality of sensors disposed on a vehicle and a plurality of base stations is obtained through the sensors and a relative coordinate system is established by a processor to obtain a vehicle head direction of the vehicle in the relative coordinate system and a deviation angle between an X-axis of the relative coordinate system and a true north azimuth. An angle compensation is performed by the processor on the vehicle head direction of the vehicle in the relative coordinate system based on the deviation angle.

Abstract: An additive includes an additive molecule having a structure represented by formula (I): wherein R1, A1, A2, Z1, K1, n1, and n2 are defined as in the specification.

Abstract: A system for determining an assessment of at least one exercise performed by a user is described. The system includes an input device, and a computing device. The input device is configured to monitor at least one exercise performed by a user. The computing device includes processors and a memory. The memory is coupled to the processors and stores program instructions that when executed by the processors cause the processors to: (1) generate a user interface displaying a content; (2) provide an instruction associated with the at least one exercise; (3) determine an indication of movement associated with the at least one exercise; (4) in response to a determination of the indication of movement, determine an assessment of the at least one exercise; and (5) in response to a determination of the assessment of the at least one exercise, perform an operation.

Abstract: An aerial vehicle including a body, a first ranging device, a second ranging device and a controller is provided. The first ranging device is disposed on the body and is configured to detect a first distance between the first ranging device and the reflector. The second ranging device is disposed on the body and is configured to detect a second distance between the second ranging device and the reflector. The controller is configured to obtain an included angle between a direction of the body and the reflector according to the first distance and the second distance.

Abstract: A multimedia content playback device and a multimedia content playback method are provided. The multimedia content playback method includes the following steps: downloading a plurality of samples of a multimedia content to a memory via a network to obtain a plurality of downloaded samples, each sample having a time stamp; receiving a seek command that specifies a target start time; deleting one or more of the downloaded samples; and downloading a target sample corresponding to the target start time.

Abstract: A liquid crystal composition includes at least one of a monofunctional compound represented by Formula (1) defined herein and a monofunctional compound represented by Formula (2) defined herein, and at least one of a difunctional compound represented by Formula (3) defined herein and a multifunctional compound represented by Formula (4) defined herein.

Abstract: A device and method of improving efficiency of a thin film solar cell by providing a back reflector between a back electrode layer and an absorber layer. Back reflector reflects sunlight photons back into the absorber layer to generate additional electrical energy. The device is a photovoltaic device comprising a substrate, a back electrode layer, a back reflector, an absorber layer, a buffer layer, and a front contact layer. The back reflector is formed as a plurality of parallel lines.

Abstract: A system for determining an assessment of at least one exercise performed by a user is described. The system includes an input device, and a computing device. The input device is configured to monitor at least one exercise performed by a user. The computing device includes processors and a memory. The memory is coupled to the processors and stores program instructions that when executed by the processors cause the processors to: (1) generate a user interface displaying a content; (2) provide an instruction associated with the at least one exercise; (3) determine an indication of movement associated with the at least one exercise; (4) in response to a determination of the indication of movement, determine an assessment of the at least one exercise; and (5) in response to a determination of the assessment of the at least one exercise, perform an operation.

Abstract: The present disclosure provides a joint function monitoring device. The joint function monitoring device comprises a bottom base capable of being removably attached to a hinge of an assistive device, a shaft comprising a central pan coupled to the bottom base, and a distal part, a first sensor coupled to the central part of the shaft for monitoring a rotation angle of the shaft, and a belt module coupled to the distal pan of the shaft and capable of being removably attached to a support assembly of the assistive device. A length of the belt module is adjustable.

Abstract: An additive, liquid-crystal composition and a liquid-crystal display using the additive are provided. The additive includes a first additive molecule having a structure represented by formula (I): wherein Ri1, Ri2, Ri3, Ai1, Ai2, Zi, m1 and m2 are defined as in the specification.

Abstract: An additive is provided. The additive includes an additive molecule having a structure represented by formula (I): wherein R1, A1, A2, Z1, K1, n1, and n2 are defined as in the specification.

Abstract: A solar cell with a molybdenum back electrode layer and a molybdenum selenide ohmic contact layer over the molybdenum back electrode, is provided. The molybdenum selenide layer includes an accurately controlled thickness. A distinct interface exists between the molybdenum back electrode layer and the molybdenum silicide layer. The molybdenum silicide layer is produced by forming a molybdenum layer or a molybdenum nitride layer or a molybdenum oxide layer over an initially formed molybdenum layer such that an interface exists between the two layers. A selenization and sulfurization process is carried out to selectively convert the molybdenum-containing layer to molybdenum selenide but not the original molybdenum back electrode layer which remains as a molybdenum layer.

Abstract: A liquid crystal composition includes at least one of a difunctional compound represented by Formula (1) defined herein and a difunctional compound represented by Formula (2) defined herein, and at least one of a monofunctional compound represented by Formula (3) defined herein and a monofunctional compound represented by Formula (4) defined herein.

Abstract: A silicon-containing compound, liquid-crystal composition and a liquid-crystal display using the silicon-containing compound are provided. The silicon-containing compound has a structure represented by Formula (I): wherein K, R1, A1, A2, A3, A4, Z1, Z2, Z3, L7, L8, L9, X6, X7, n1, n2, n3, and n4 are defined as in the specification.

Abstract: A liquid crystal composition includes at least one of a monofunctional compound represented by Formula (1) defined herein and a monofunctional compound represented by Formula (2) defined herein, and at least one of a difunctional compound represented by Formula (3) defined herein and a multifunctional compound represented by Formula (4) defined herein.

Abstract: The disclosure is a liquid crystal compound represented by Formula (I), wherein R1, R2, R3, ring A1, ring A2, ring A3, Z1, Z2, and n have definitions that are described in details herein. The liquid crystal compound represented by Formula (I) can be used to prepare a liquid crystal composition that has superior low-temperature storage.

Abstract: A teaching apparatus for a manipulator is provided, including: a fixing member for fixing to the manipulator; a main body connected to the fixing member; and a handle connected to the main body. The main body includes a plurality of sensors and an operation display member, wherein at least one of the sensors is disposed on one side of the main body adjacent the fixing member and configured for sensing a force, a stress or a torque applied to the main body, and the operation display member is disposed on the other side of the main body and includes a plurality of function keys and a display screen disposed thereon. The teaching apparatus allows the path-teaching process for a manipulator to be completed quickly and easily.

Abstract: An operating method for an interactive writing device is provided. The operating method includes following steps. A visible light image is captured in response to an original outputted image. A tag searching region is established in the visible light image in response to a writing operation performed by a writing object having a color tag pattern. The original outputted image corresponding to the tag searching region is filtered from the visible light image in the tag searching region to generate a local processed image. A color tag corresponding to the color tag pattern of the writing object is searched from the local processed image. A color value corresponding to the color tag is generated.