Abstract: A catalyst system for olefin polymerization contains a main catalyst and a cocatalyst. The cocatalyst contains a twelve-membered ring compound represented by formula (M). The catalyst system is suitable for preparing polypropylene products having high stereoregularity and low ash, and can regulate the melt index of the products within a wide range by adjusting the amount of hydrogenation. It is also suitable for copolymerization systems to improve the copolymerization yield.

Abstract: A clock synchronization method includes receiving, by a receiving apparatus, a plurality of data blocks using a plurality of physical layer modules (PHYs), where the plurality of data blocks include a plurality of head data blocks, performing, by the receiving apparatus, timestamp sampling on the plurality of data blocks to generate a plurality of receipt timestamps, aligning, by the receiving apparatus, the plurality of receipt timestamps using a first receipt timestamp as a reference, generating, by the receiving apparatus, a clock synchronization packet based on the plurality of data blocks, and writing, by the receiving apparatus, a value of a second receipt timestamp into the clock synchronization packet, where the second receipt timestamp is a receipt timestamp that is of a second data block and that is determined based on the plurality of aligned receipt timestamps.

Abstract: The present disclosure provides an interaction method, an interaction apparatus, an electronic device, and a computer-readable storage medium, which relate to the technical field of image processing. The method includes: displaying a background image; displaying an initial picture of a target visual effect at a preset position of the background image; controlling the target visual effect to gradually change from the initial picture to a target picture in response to a visual effect change instruction triggered by a user; and adjusting a filter effect of the background image to allow the filter effect of the background image to gradually change from a first filter effect to a second filter effect during a change of the target visual effect.

Abstract: The present application provides an information interaction method and apparatus, and a storage medium. In the method, a server receives an interactive video uploaded by a first user terminal, and sends the interactive video to a second user terminal. That is, in the embodiments of the present application, the video is taken as a carrier of interaction between strangers, which can bear diversified user information expressions. Moreover, the server further receives processing information for the interactive video sent by the second user terminal and/or the first user terminal, and processes the interactive video according to the processing information. That is, based on the video, friendly video interaction between strangers is realized, and social experiences of strangers in social activities are improved.

Abstract: The present disclosure provides a method for transmitting uplink information, including: determining a frequency band for carrier sensing and an allocation manner of uplink frequency domain resources by receiving a signaling or by predefining via a protocol; performing carrier sensing at the determined frequency band for carrier sensing; and transmitting uplink information in uplink frequency domain resources determined according to the allocation manner of uplink frequency domain resources when a carrier is idle. The present disclosure also provides a user equipment for transmitting uplink information.

Abstract: An optical imaging lens includes a first lens element to a seventh lens element. The first lens element, the fifth lens element and the sixth lens element are made of plastic. The optical axis region of the image-side surface of the second lens element is convex, the optical axis region of the image-side surface of the third lens element is convex, the optical axis region of the object-side surface of the fourth lens element is convex and the optical axis region of the image-side surface of the seventh lens element is concave to satisfy (T5+G56+T6)/(G23+T3+G34+T4+G45)?1.200 by controlling the surface curvatures of each lens element to enlarge HFOV, to reduce the system length and to have good imaging quality.

Abstract: Provided are a data processing method and an apparatus thereof. The method includes: when data writing is to be performed for a target Trunk Group (TKG), determining whether the target TKG is available (S100); when the target TKG is available, performing data writing for the target TKG (S110); and, when the target TKG is unavailable, repairing the target TKG, and performing data writing for the repaired target TKG (S120).

Abstract: The present disclosure relates to microphones and electronic devices having the same. The microphone may include a housing for receiving sound signals, at least two transducers for vibrating to generate electrical signals in response to the sound signals, and a processing circuit for processing the electrical signals. Each of the at least two transducers may provide a distinctive resonance peak to the microphone.

Abstract: Network device, system, method and computer readable medium for video content processing.

Abstract: A control device for use in a broadcast system includes a broadcast controller that controls a broadcast transmitter of the broadcast system that broadcasts broadcast signals in a coverage area for reception by terminals including a broadcast receiver and a broadband receiver, and a broadband controller that controls a broadband server of a broadband system that provides redundancy data to terminals within the coverage area. The broadband controller is configured to control the provision of redundancy data by the broadband server for use by one or more terminals which use the redundancy data together with broadcast signals received via said broadcast system for recovering content received within the broadcast signals and/or provided via the broadband system.

Abstract: Methods and compositions comprising one or more degraded in situ gelable polymers are provided. Use of such compositions and methods comprising one or more degraded in situ gelable polymers during enhanced oil recovery may result in an increase in oil production relative to methods and/or compositions which do not comprise one or more degraded in situ gelable polymers.

Abstract: A method implemented at a location server is proposed. The method comprises: deciding inter-frequency measurement information for positioning a user equipment, UE, wherein the inter-frequency measurement information comprises at least one frequency other than a frequency of a serving cell of the UE; sending a first measurement request containing the inter-frequency measurement information to an access node of the serving cell; receiving a first measurement result from the access node; and determining a position of the UE based on the measurement result.

Abstract: Disclosed are a method for determining a platelet concentration of a blood sample, a hematology system (100) and a storage medium.

Abstract: A thin film transistor and manufacturing method thereof, an electronic device are provided, which includes: a gate electrode, a gate insulation layer, an active layer, a first electrode and a second electrode are on a base substrate, the active layer made of a one-dimensional semiconductor nano material includes a first electrode region, a second electrode region, a first channel region, a second channel region; the first electrode region and the second electrode region are in contact with the first electrode and the second electrode respectively, the first channel region is directly connected with the first channel region and the second channel region respectively, the second channel region is a first doped region and between the first electrode region and the second electrode region; an energy level of the second channel region is different from that of the first channel region corresponding to the energy level of the second channel region.

Abstract: The present disclosure relates to a method, device and product for managing a plurality of users of an application system. According to example implementations of the present disclosure, a method is provided for managing a plurality of users of an application system. In the method, a group of users matching a search keyword from a requester user are determined among the plurality of users, the search keyword comprising at least one part of an identifier of a desired user. A requester layer of the requester user is determined in a tree structure comprising hierarchical relations among the plurality of users. A group of layers of the group of users are determined in the tree structure, respectively. The group of users are sorted based on the requester layer and the group of layers. With example implementations of the present disclosure, a user which the requester user is looking for may be sorted at a top place so as to be selected by the requester user.

Abstract: Discloses present a method and a device in a node for wireless communications. A node maintains a first timer; and as a response to any condition in a first condition set being satisfied, transmits a first message; a condition in the first condition set is that the first timer is expired; the first message is used for indicating at least one non-unicast identifier; the node is in a first RRC state when transmitting the first message. The present application proposes the conditions of triggering a first message in multicast groupcast cases as well as corresponding transmission method and device, making it possible to transmit the current state of the node to the network side to ensure that when using a HARQ for multicast groupcast services, the terminal is able to enter into or stay in the RRC connected state, thus enhancing the transmission reliability and optimizing the system performance.

Abstract: The present disclosure relates to a pre-5th-generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-generation (4G) communication system such as long term Evolution (LTE). Disclosed is a method of defining a resource block or resource element offset for mapping PTRS to a symbol, wherein the offset is determined based on an identifier of a particular user equipment, UE.

Abstract: A modified high-nickel ternary positive electrode material includes an inner core and inner and outer coating layers. The inner core includes a high-nickel ternary positive electrode material matrix, the matrix being doped with M1, M2, and W. M1 is one of Mo, Zr, Ti, Sb, Nb, and Te. M2 is one of Mg, Al, Ca, Zn, and Sr. Chemical formula of the high-nickel ternary positive electrode material matrix is Li1+a[NixCoyMnzM1bM2cWd]O2. 0.65?x<1, 0?y<0.3, 0?z<0.3, 0<a<0.2, 0<b<0.1, 0<c<0.1, 0<d<0.1, x+y+z+b+c+d=1. A surface layer of the inner core is further doped with Co. The inner coating layer is a Co-containing compound. The outer coating layer includes an Al-containing compound and a B-containing compound.