Abstract: A connection assembly and a gimbal device are provided. The connection assembly includes a first connection member, a second connection member and a locking structure. The first connection member is connected to the gimbal. The second connection member is connected to the first connection member. When the locking structure is in a locking state, the locking structure may lock the first connection member and the second connection member. When the locking structure is in a released state, the first connection member and the second connection member may rotate relative to each other, so that the gimbal may be switched between at least two operation postures.

Abstract: Disclosed is a multi-dimensional analysis method for a tripping risk of a whole transmission line due to a lightning shielding failure. A quantity of thunderstorm days, a tower size, a terrain proportion, an altitude, and insulation configuration data are collected for a transmission line for which a tripping risk due to a lightning shielding failure needs to be analyzed, and a striking distance, an exposure distance, a lightning resisting level of the line after altitude factor correction, and a lightning shielding failure risk of a single-base tower are calculated in turn. Characteristics of a lightning shielding failure under different nominal heights, quantities of thunderstorm days, and terrains are studied. Representative combination conditions are selected to calculate a tripping risk of a typical tower due to the lightning shielding failure. A weight coefficient is extracted, to calculate a tripping risk of the whole line due to the lightning shielding failure.

Abstract: An apparatus including a processor to: within a kill container, in response to a set of error messages indicative of errors in executing multiple instances of a task routine to perform a task of a job flow with multiple data object blocks of a data object, and in response to the quantity of error messages reaching a threshold, output a kill tasks request message that identifies the job flow; within a task container, in response to the kill tasks request message, cease execution of the task routine and output a task cancelation message that identifies the task and the job flow; and within a performance container, in response to he task cancelation message, output a job cancelation message to cause the transmission of an indication of cancelation of the job flow, via a network, and to a requesting device that requested the performance of the job flow.

Abstract: This invention relates to a method comprising contacting C3-C32 alpha olefin with catalyst system comprising activator and catalyst of the formula wherein: M is Hf or Zr; T is a bridging group; each X is independently a leaving group; R1 and R2 are independently hydrogen, or a Ci-Gto optionally substituted hydrocarbyl group, halide, or siloxyl group; R3, R4, R5 and R6 are independently a Ci-Gto optionally substituted hydrocarbyl, halocarbyl, silylcarbyl, aminocarbyl, or siloxyl group; and A is an aliphatic, aromatic or heteroaromatic ring, optionally bearing one or more additional fused rings which may be aliphatic, aromatic or heteroaromatic; obtaining a plurality of vinyl-terminated polyalphaolefins (PAOs) having at least 30 mol % vinyl terminated PAO's.

Abstract: A frequency conversion power transmission system includes: a new energy power generation base, a first isolation device, a second isolation device, an alternating current-alternating current (AC-AC) frequency conversion device and a power transmission cable; the new energy power generation base is configured to supply electrical energy to an AC power grid, and operate at a constant voltage and a constant or variable frequency according to environmental conditions including weather, an environment or a distance; the first isolation device is connected to the new energy power generation base; the second isolation device is connected to the AC power grid; an input terminal of the AC-AC frequency conversion device is connected to the first isolation device, an output terminal of the AC-AC frequency conversion device is connected to the second isolation device, and the power transmission cable is configured to connect the new energy power generation base and the first isolation device.

Abstract: Disclosed are systems and methods utilizing neural contextual bandit for improving interactions with and between computers in content generating, searching, hosting and/or providing systems supported by or configured with personal computing devices, servers and/or platforms. The systems interact to make item recommendations using latent relations and latent representations, which can improve the quality of data used in processing interactions between or among processors in such systems. The disclosed systems and methods use neural network modeling in automatic selection of a number of items for recommendation to a user and using feedback in connection with the recommendation for further training of the model(s).

Abstract: A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.

Abstract: An optical system, a lens module, and an electronic device are provided. The optical system includes sequentially, from an object side to an image side along an optical axis, first to seventh lenses. Object-side surfaces and image-side surfaces of the first lens and the fifth to seventh lenses are aspheric surfaces. The object-side surfaces of the first lens and the fifth lens are convex near the optical axis. The object-side surface and the image-side surface of the second lens are concave. The object-side surface and the image-side surface of the third lens are convex. The object-side surface of the sixth lens is concave near the optical axis. The image-side surface of the seventh lens is concave near the optical axis.

Abstract: A lawn mower includes a blade assembly configured to perform a cutting function. The blade assembly includes an upper blade mounted about a blade rotation axis and an upper blade proximal portion being substantially flat and including a first cutting edge. A lower blade is mounted in overlap with the upper blade about the blade rotation axis. The lower blade includes a lower blade proximal portion positioned outward from the lower blade mounting portion in a radial direction, a lower blade end portion positioned outward from the lower blade proximal portion and below the lower blade proximal portion, and a second cutting edge. A lower blade falling portion transitions from the lower blade proximal portion to the lower blade end portion.

Abstract: The present disclosure generally relates to process to produce a poly alpha-olefin (PAO), comprising: a) introducing a first alpha-olefin to a first catalyst system comprising non-aromatic hydrocarbon soluble activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under first reactor conditions, wherein the first alpha-olefin is preferably introduced to the reactor at a flow rate of about 100 g/hr or more, to form a first reactor effluent comprising PAO (such as at least 60 wt % of PAO dimer and 40 wt % or less of higher oligomers, where the higher oligomers are oligomers that have a degree of polymerization of 3 or more); and b) introducing the first reactor effluent and a second alpha-olefin to a second catalyst composition comprising an acid catalyst, such as BF3, in a second reactor to form a second reactor effluent comprising PAO trimer.

Abstract: A modular flying car includes a ground vehicle and a flight vehicle. The ground vehicle includes a chassis, a first cabin and a landing platform for landing the flight vehicle. The flight vehicle includes a second cabin and a flight driving device. The flight vehicle is capable of landing and taking off vertically on the landing platform and connected with the ground vehicle by interlocking. Users can choose to travel by the ground vehicle or the flight vehicle, and can transfer between the ground vehicle and the flight vehicle, to solve the traffic jam problem and make the realization of the flying car more feasible. A flying car system and a flying car sharing method are also disclosed.

Abstract: The present disclosure provides compositions which may be used as tissue engineering materials, and more particularly xylitol-doped citrate polymer compositions which may be useful as bone grafts.