Abstract: A region of interest (ROI)-based virtual reality (VR) content streaming server and a method are disclosed. The streaming server includes a communication unit that receives a request signal for a media presentation description (MPD) file regarding tiles of a tiled video, ROI) information, and a request signal for a segment file from an electronic device, and transmits the MPD file and the segment file corresponding to the request signal to the electronic device. The streaming server further includes a controller configured to, when the request signal for the MPD file is received, control the MPD file corresponding to the request signal to be transmitted to the electronic device.

Abstract: Techniques for artificial intelligence driven configuration management are described herein. In some embodiments, a machine-learning process determines a feature set for a plurality of deployments of a software resource. Based on varying values in the feature set, the process clusters each of the plurality of deployments into a cluster of a plurality of clusters. Each cluster of the plurality of clusters comprises one or more nodes and each node of the one or more nodes corresponds to at least a subset of values of the feature set that are detected in at least one deployment of the plurality of deployments of the software resource. The process determines a representative node for each cluster of the plurality of clusters. An operation may be performed based on the representative node for at least one cluster.

Abstract: A method of preparing a tricyclic compound of formula (I), comprising the step of converting a compound of formula (II) into a compound of formula (III); and hydrogenating the compound of formula (III) in the presence of hydrogenation catalyst and hydrogen to form the tricyclic compound of formula (I); wherein R1 is H or a C1-3 alkyl group; and R2 is H, a halogen element or a C1-3 alkyl group.

Abstract: The present invention relates to techniques for lowering friction between moving surfaces of, for example, an internal combustion engine. Friction reduction is achieved by adding texture modifications to surfaces that come in contact with each other. Texture modifications that reduce friction in accordance with the present invention include dimples of varying geometries and depths ion the surfaces of components. The present invention also relates to the fabrication technique for applying the texture to the surfaces. In another embodiment, the patterned soft mask is applied onto a large surface (flat or curved including cylindrical rollers surfaces) to be followed by electrochemical etching to imprint the textures onto the component And, in another embodiment, a diamond-like-carbon (DLC) film may be applied to the turbine component to also reduce friction.

Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, the present disclosure provides a process to produce a poly alpha-olefin (PAO), the process including: introducing a C6-C32 alpha-olefin and a catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under reaction conditions, wherein the alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more; and obtaining a product comprising PAO dimer and optional higher oligomers of alpha-olefin, or a combination thereof, the PAO dimer comprising 96 mol % or more of vinylidene, based on total moles of vinylidene, disubstituted vinylene, and trisubstituted vinylene in the product. In at least one embodiment, a process includes functionalizing and/or hydrogenating a PAO product of the present disclosure. In at least one embodiment, a blend includes a PAO product of the present disclosure.

Abstract: An integrated circuit includes a fin active region protruding from a substrate, a plurality of semiconductor patterns on an upper surface of the fin active region, a gate electrode that surrounds the plurality of semiconductor patterns and includes a main gate part on an uppermost one of the plurality of semiconductor patterns and sub gate parts between the plurality of semiconductor patterns, a spacer structure on a sidewall of the main gate part, and a source/drain region at a side of the gate electrode. The source/drain region is connected to the plurality of semiconductor patterns and contacts a bottom surface of the spacer structure. A top portion of the uppermost semiconductor pattern has a first width. A bottom portion of the uppermost semiconductor pattern has a second width smaller than the first width.

Abstract: The present invention relates to a heteroatom ligand, an oligomerization catalyst containing the same, and a method for preparing an oligomer by using the same. Specifically, the present invention relates to a heteroatom ligand having a silsesquioxane derivative, an oligomerization catalyst containing the same, and a method for preparing an oligomer by using the same.

Abstract: Provided are communication relationship establishing method and device, computer readable storage medium, electronic device, and cleaning device.

Abstract: A semiconductor device includes a semiconductor substrate and a pair of memory device structures. The semiconductor substrate includes a common source/drain region and a pair of individual source/drain regions, in which the common source/drain region is between the individual source/drain regions. The memory device structures each corresponds to one of the individual source/drain regions. Each memory device structure includes a trap storage structure, a control gate, a cap structure, and a word line. The trap storage structure is between the common source/drain region and the corresponding individual source/drain region. The control gate is over the trap storage structure. The cap structure is over the control gate, in which the cap structure comprises a nitride layer over the control gate and an oxide layer over the nitride layer. The word line is over the semiconductor substrate and laterally spaced from the control gate.

Abstract: A washing machine according to an embodiment of the present invention may comprise: a cabinet accommodating a washing drum; a top cover seated on the top surface of the cabinet and having a door seating part formed therein; a door that is pivotally seated on the door seating part; a panel case mounted to the top surface of the top cover corresponding to the rear side of the door, the panel case including a front case and a rear case coupled to the rear surface of the front case; a control panel provided on the front surface of the front case; and a panel-deco coupled to the front surface of the front case corresponding to the bottom side of the control panel, the panel-deco opening and closing a coupling portion of the front case and the top cover.

Abstract: A rotary guiding device includes a rotating shaft to rotationally drive a tool head. The rotating shaft includes upper and lower shaft portions, and a steerable portion, the upper shaft portion and the lower shaft portion are steerably connected by the steerable portion. A non-rotating body is mounted on the upper shaft portion, the non-rotating body is substantially non-rotating with respect to the rotating shaft in circumferential direction when the rotating shaft rotationally drives the tool head. The lower shaft portion includes a rib portion coinciding at least partially in axial direction with the non-rotating body. The non-rotating body includes at least three hydraulic driving mechanisms uniformly distributed along its circumferential direction, the three hydraulic driving mechanisms controllably generate radial drive forces respectively, the radial driving forces act on the rib portion overlapping the non-rotating body so the lower shaft portion can be deflectable relative to the steerable portion.

Abstract: The present disclosure relates to a mobile terminal. The mobile terminal includes: a body, a lifting component, and a camera. A camera telescoping hole is arranged on the body. The lifting component includes an operating member exposed to outside of the body and a supporting member which is arranged in the body and is in a transmission connection with the operating member. The camera is coupled to the supporting member to extend or retract through the camera telescoping hole when the operating member under action of an external force drives the supporting member.

Abstract: There is provided a curable compound having good solvent solubility and being capable of forming a cured material having super heat resistance. The curable compound according to the present invention is represented by the following formula (1).

Abstract: A lighting device according to one embodiment comprises: a housing having an opening; a half mirror member arranged in the opening; a first light source unit for emitting light at the half mirror member; a mirror member for re-reflecting light reflected by the half mirror member; a diffusion plate arranged between the first light source unit and the half mirror member; and a guide unit protruding from the lower surface of the housing, wherein the housing includes a first area and a second area formed by the guide unit, the first light source unit is arranged in the first area and the mirror member is arranged in the second area, and the diffusion plate can be supported by the guide unit. Therefore, the lighting device can implement various three-dimensional effects of an optical image according to a field of view by using the half mirror member and the mirror member during lighting.

Abstract: A three-level modulation for an isolated multilevel DC/DC resonant converter offers output voltage regulation capability with fixed switching frequency and achieves high efficiency along with soft-switching of the power switches. The three-level modulation enables current balance in all power devices, therefore, realizes better thermal performance and longer circuit life. An efficient control method that combines the three-level modulation with conventional frequency modulation achieves a wide output voltage range with a narrow switching frequency range. At any given time, a control circuit selects one of two different modulation schemes to operate the primary-side switches of the resonant converter based on an output voltage, or to one or more external control signals. Together with a selected device switching frequency and duty cycles, the two modulation schemes generate different voltage waveforms to a primary-side transformer, which are coupled to the secondary-side to provide different output voltages.

Abstract: This application provides a data route selection method and apparatus, and relates to the field of communications technologies, so as to resolve a problem of an excessively long transmission delay for an application program that initiates a data transmission request relatively later. The data route selection method includes: detecting, by a terminal, that information about an application matches a traffic descriptor; determining, by the terminal, a first route selection components for the application; and routing, by the terminal, traffic of the application on a first protocol data unit PDU session. The first PDU session matches the first route selection components. This application is applicable to a terminal.

Abstract: A method and a system for reducing current noise of a touch terminal are provided. The method includes: determining that a user receives a voice call via an earpiece of the touch terminal, and controlling the touch terminal to switch from a first touch scan frequency to a second touch scan frequency, where the second touch scan frequency is less than the first touch scan frequency. As can be seen, if the user receives the voice call via the earpiece of the touch terminal, the touch terminal is controlled to switch from the first touch scan frequency to the second touch scan frequency, to effectively reduce the current noise heard by the user by decreasing the touch scan frequency of the touch terminal, so that the periodic current noise is outside a frequency band perceptible to a human ear, thereby improving user experience when receiving the voice call.