Abstract: A camera module includes a housing having an internal space, a lens module disposed in the internal space to be slidably movable with respect to the housing, and a driving portion configured to provide a driving force to move the lens module in an optical axis direction. The driving portion includes a wire portion having a length that changes as power is applied to the wire portion, the lens module comprises a guide portion configured to guide a movement of the lens module in the optical axis direction, and the wire portion is in contact with and supported by the guide portion.

Abstract: An air mobility craft is provided. The air mobility craft includes a fuselage that has a boarding space and a boarding gate and a plurality of wings disposed on the fuselage. A plurality of rotors are disposed on the wings. A first number of the plurality of rotors are tilting rotors configured to tilt upward or downward for lifting or cruising of the fuselage and a remaining number of the rotors are lifting rotors.

Abstract: A lens module includes a carrier having an internal space, a lens unit including lens groups and installed in the carrier so that at least two of the lens groups are independently movable in a length direction of the carrier, a guide unit including guide members arranged on both side surfaces of the lens groups to guide movement of the movable lens groups, and driving wires connected to each of the guide members and formed of a shape memory alloy, wherein each of the movable lens groups is connected to a pair of guide members disposed on both sides of the carrier.

Abstract: A camera module device includes: a base plate; one or more cameras fixed to and disposed on one surface of the base plate; a plurality of movable cameras movably disposed on the one surface of the base plate and configured to move individually or collectively; a driving gear disposed on the base plate; and a plurality of sub-gears engaged with the driving gear, wherein positions of the plurality of sub-gears are configured to change to selectively transfer power to one or more of the plurality of movable cameras.

Abstract: An apparatus for generating thrust for air transport includes a main thrust device, and an auxiliary thrust device configured to generate auxiliary thrust so as to enable an aircraft to vertically take off and land. The apparatus further includes: wings fixed to left and right sides of a fuselage of the aircraft, rotors installed on the wings and configured to generate thrust. In particular, the main thrust device provides driving force to the rotors using motors and an engine, and the auxiliary thrust device is installed in the fuselage and has a center of gravity configured to coincide with a center of gravity of the aircraft.

Abstract: As deep learning application domains grow, a deeper understanding of the relationships between training set size, computational scale, and model accuracy improvements is extremely beneficial. Presented herein are large-scale empirical study of error and model size growth as training sets grow. Embodiments of a methodology for this measurement are introduced herein as well as embodiments for predicting other metrics, such as compute-related metrics. It is shown herein that power-law may be used to represent deep model relationships, such as error and training data size. It is also shown that model size scales sublinearly with data size. These scaling relationships have significant implications on deep learning research, practice, and systems. They can assist model debugging, setting accuracy targets, and decisions about data set growth. They can also guide computing system design and underscore the importance of continued computational scaling.

Abstract: A camera module includes: a first driving unit including a rotating plate disposed in a housing so as to be rotatable about an optical axis, and a first shape memory alloy (SMA) wire configured to rotate the rotating plate in response to a first applied current; and an optical module disposed in the housing and coupled to the rotating plate.

Abstract: A lens module includes a carrier having an internal space; a lens unit including a plurality of lens groups, and installed in the carrier to move at least one of the lens groups in a length direction of the carrier; a lens guide unit including a plurality of guide members arranged on first and second surfaces of the plurality of lens groups, to guide movement of at least two lens groups of the plurality of lens groups; and a plurality of driving wires connected to each of the plurality of guide members. The carrier includes an auxiliary guide member having an auxiliary guide hole, and disposed on at least one of the first and second surfaces of the plurality of lens group, the auxiliary guide hole being disposed parallel to a movement direction of the at least two lens groups to guide movement of the at least two lens groups.

Abstract: In an air mobility vehicle, an engine operates as required to provide mechanical driving force or electric energy. A battery is charged with the electric energy from the engine. Main rotors operate using the electric energy of the battery and electric power generated by the engine to perform takeoff, landing, and cruising. Auxiliary rotors are disposed at or adjacent to the center of gravity of a vehicle body and mechanically connected to the engine via a clutch. The auxiliary rotors perform the takeoff, the landing, or the cruising by receiving the mechanical driving force from the engine when the clutch is in an engaged position. A controller monitors the states of the battery and the main rotors and controls the operations of the engine and the clutch.

Abstract: An aerosol-generating apparatus includes a housing comprising at least one light-transmitting window configured to transmit external light to an inside of the aerosol-generating apparatus; a heating element comprising a plurality of nanoparticles configured to generate heat in response to light through Surface Plasmon Resonance (SPR); a light source arranged inside the housing and configured to emit light toward the heating element; a sensor configured to detect a temperature of the heating element or a quantity of the external light transmitted to the inside of the aerosol-generating apparatus through the at least one light-transmitting window; and a processor configured to adjust a quantity of light received by the heating element by controlling the light source based on the detected temperature of the heating element or the detected quantity of the external light transmitted to the inside of the aerosol-generating apparatus.

Abstract: A semiconductor memory device includes a memory cell array, an error correction code (ECC) engine, a refresh control circuit, a scrubbing control circuit and a control logic circuit. The refresh control circuit generates refresh row addresses for refreshing a memory region on memory cell rows in response to a first command received from a memory controller. The scrubbing control circuit counts the refresh row addresses and generates a scrubbing address for performing a scrubbing operation on a first memory cell row of the memory cell rows whenever the scrubbing control circuit counts N refresh row addresses of the refresh row addresses. The ECC engine reads first data corresponding to a first codeword, from at least one sub-page in the first memory cell row, corrects at least one error bit in the first codeword and writes back the corrected first codeword in a corresponding memory location.

Abstract: A camera module is provided. The camera module includes an optical assembly including one or more lens and an image sensor, a first driving unit configured to move the optical assembly in a first direction to retract the optical assembly into a housing of an electronic device in which the optical assembly is disposed, or configured to move the optical assembly in a second direction, opposite to the first direction, so that the optical assembly protrudes externally from the housing, and a second driving unit configured to rotate the optical assembly in a protruding state based on a rotation axis, parallel to the first direction.

Abstract: In one example, an electronic device comprises a cavity substrate comprising a substrate base comprising a top side and a bottom side and a cavity wall over the substrate base and defining a cavity, an electronic component over the substrate base and in the cavity, a lid comprising a top side and a bottom side, wherein the lid is over the substrate base and the cavity wall to define an interior of the cavity and an exterior of the cavity, an adhesive between the bottom side of the lid and a top side of the cavity wall, and a vent seal between the interior of the cavity and the exterior of the cavity. Other examples and related methods are also disclosed herein.

Abstract: A sensor actuator includes an image sensor configured to convert incident light into an electrical signal, and first and second driving parts, configured to move the image sensor in first and second directions, respectively, each of the first and second driving parts includes one or more drivers each includes a wire having a change in length configured to move the image sensor. The one or more drivers in the second driving part is configured to move the image sensor and the first driving part together, and the first and second directions are different from each other.

Abstract: A camera module includes a first rotation case configured to rotate in the fixed case around a first axis, a second rotation case configured to rotate in the first rotation case around a second axis, perpendicular to the first axis, a sub-module fixed in the second rotation case, a first shape memory alloy driving wire connected to the first rotation case, and a second shape memory alloy driving wire connected to the second rotation case.

Abstract: An oil dispersion system uses an actuator for propellers and includes a pumping device that circulates oil when a driving motor is operated to drive a propeller, whereby the propeller and an oil circulation structure are integrated, and a circulation amount of oil is adjusted based on an angle of a swash plate of the pumping device when the driving motor is operated in order to drive the propeller, thereby controlling a supply of oil to no more than that required by oil-using parts.

Abstract: A lens actuator includes: a lens barrel accommodating one or more lenses; and a driving unit to move the lens barrel along an optical axis direction. The driving unit includes a driving wire, at least a portion of which is extended in the optical axis direction, and a length of which is changed as voltage is applied thereto, and a driving transmission unit connected to the driving wire to move the lens barrel along the optical axis direction as the length of the driving wire is changed such that a distance by which the lens barrel is moved by the driving transmission unit is greater than an amount of change in the length of the driving wire.

Abstract: An embodiment of the present invention provides a moving bike device including: a memory configured to store distance information and altitude information; a content implementation unit configured to adjust a reproduction state of content in response to a speed of a wheel depending on pedaling of a user; a controller configured to calculate a road slope from the distance information and the altitude information, and to calculate a travel distance depending on the pedaling of the user; and a road slope implementation unit configured to adjust strength of a brake in proportion to the road slope corresponding to the travel distance.

Abstract: Provided is a method for chatting messages by topic based on subscription channel reference in a server. The method may include: receiving a message transmission request from a first user terminal corresponding to a first user to a second user terminal corresponding to a second user; extracting a subscription channel to be referred to by parsing the received message; reading a corresponding client handler with reference to a subscription channel stored in a subscription channel storage; and transmitting a message to the first and second user terminals through the read client handler.