Abstract: Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm3, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of ?E/3? at an extensional rate of 0.1 sec?1 from 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture.

Abstract: The invention discloses a speech processing method and system in a cochlear implant. The method includes: obtaining a sound signal, and converting the sound signal into a digital signal; decomposing the digital signal using a mode decomposition method, obtaining a plurality of intrinsic mode functions, and converting the plurality of intrinsic mode functions into instantaneous frequencies and instantaneous amplitudes or instantaneous energy intensities; sorting the instantaneous frequencies to corresponding the preset electrode frequency bands of the electrodes in the cochlear implant; selecting N most energetic components from the corresponding frequency bands of the electrodes, and generating corresponding electrode stimulation signals according to the selected components. The present invention analyzes sound and composes the final electrode signals all in the time domain based on Hilbert-Huang transform; it is not limited by the principle of uncertainty, and there is no noise generated by harmonics.

Abstract: A timing controller includes: a field programmable gate array configured to generate a reference clock signal, and obtain at least one group of clock signals according to the reference clock signal. Each group of clock signals includes at least two clock signals, and a waveform of each clock signal is same as a waveform of the reference clock signal, and active levels in different clock signals are provided with a delay of a preset duration. The reference clock signal includes a first clock sub-signal for first duration and a second clock sub-signal for a second duration. At least one output interface group is connected to the field programmable gate array. Each output interface group includes at least two output interfaces, and each of the at least two output interfaces is configured to output one clock signal of a group of clock signals corresponding to the output interface group.

Abstract: Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina activator-supports, for preparing catalyst compositions, and for using the catalyst compositions to polymerize olefins.

Abstract: Disclosed are metallocene compounds, catalyst compositions comprising at least one metallocene compound, processes for polymerizing olefins, methods for making catalyst compositions, olefin polymers and articles made from olefin polymers. In an aspect, a metallocene compound and catalyst composition are disclosed in which the metallocene contains at least one indenyl ligand, the indenyl ligand containing at least one halogenated substituent, such as a fluorinated substituent. These metallocene compounds and catalyst compositions can produce polyethylene having unexpectedly low levels of short chain branching.

Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.

Abstract: Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm3, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of ?E/3? at an extensional rate of 0.1 sec?1 from 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture.

Abstract: A network topology discovery method, includes: A second network device receives a first LLDP packet sent by a first network device. The first LLDP packet includes first slice information, and the first slice information is used to indicate a network slice to which a first port of the first network device belongs. The second network device sends the first slice information and second slice information to a management device. The second slice information is used to indicate a network slice to which a second port of the second network device belongs.

Abstract: Disclosed are metallocene compounds, catalyst compositions comprising at least one metallocene compound, processes for polymerizing olefins, methods for making catalyst compositions, olefin polymers and articles made from olefin polymers. In an aspect, a metallocene compound and catalyst composition are disclosed in which the metallocene contains at least one indenyl ligand, the indenyl ligand containing at least one halogenated substituent, such as a fluorinated substituent. These metallocene compounds and catalyst compositions can produce polyethylene having unexpectedly low levels of short chain branching.

Abstract: This disclosure provides a loudspeaker, including a first basket; a second basket; a cone paper enclosing an accommodating cavity with openings at both ends, the openings at both ends of the cone paper being respectively provided with the first basket and the second basket; a magnetic circuit structure located in the accommodating cavity; and a voice coil assembly located in the accommodating cavity, installed between the magnetic circuit structure and an inner wall of the accommodating cavity of the cone paper, and connected to the inner wall of the accommodating cavity of the cone paper, the voice coil assembly being configured to move under an action of a magnetic field of the magnetic circuit structure to drive the cone paper to vibrate. This disclosure further provides a loudspeaker device.

Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.

Abstract: A method includes disposing a series of protrusions on a rectangular side panel of an open four-sided box-like structure in a frame, and attaching an electronic substrate to the frame. The electronic substrate carries one or more circuit components. The series of protrusions acts as a spring-like compensator to compensate plastic deformation, twisting or warping of the frame, and to limit propagation of stress to the electronic substrate via the frame.

Abstract: Methods for determining the catalytic activity of an activated chemically-treated solid oxide using a color measurement technique are described, and these methods are integrated into transition metal-based catalyst preparation processes and systems, as well as into olefin polymerization processes and related polymerization reactor systems.

Abstract: An identity certificate may be issued to a blockchain node. The issuance may include issuing a first identity certificate to a first terminal and receiving a second identity certificate issuance request that is from the first terminal. A second identity certificate may be issued to the first terminal, and a third identity certificate issuance request is received from the second terminal. A third identity certificate is issued to the second terminal, so that the second terminal forwards the third identity certificate to the third terminal.

Abstract: The invention discloses a solid-state drive control device and a learning-based solid-state drive data access method, wherein the method comprises the steps of: presetting a hash table, the hash table comprising more than one hash value, the hash value is used to record and represent data characteristics of data pages in the solid-state drive. Obtaining an I/O data stream of the solid-state drive, and obtaining a hash value corresponding to the I/O data stream in the hash table. Predicting a sequence of data pages and/or data pages that are about to be accessed by a preset first learning model. Prefetching data is performed in the solid-state drive based on an output result of the first learning model. Through the embodiment of the present invention, when predicting prefetched data, learning can be performed in real time to adapt to different application categories and access modes through adaptive adjustment parameters, so that better data prefetching performance can be obtained.

Abstract: A device implementing a system for mitigating noise includes at least one processor configured to receive a first audio signal corresponding to a first microphone, and determine whether wind noise is present based at least in part on the first audio signal. The processor is configured to select, based on the determining, a second audio signal from between second and third microphones. The second microphone is disposed at a location that experiences less echo coupling when the device is in a particular orientation with respect to a user. The third microphone is disposed at another location that experiences less wind noise. The processor is configured to determine voice and noise reference values based on the first and the selected second audio signals, and perform noise suppression with respect to at least one of the first or the selected second audio signal, based on the voice or the noise reference value.

Abstract: The present invention provides an application of N-benzyl tryptanthrin derivative as tryptophan dioxygenase (TDO) inhibitor, and more specifically an application of N-benzyl tryptanthrin derivative or a pharmaceutically acceptable salt thereof. Said derivative has a structural general formula as represented by formula 1, wherein each group is defined as in the specification. The derivative of the present invention has a good TDO inhibiting activity and can be used to prepare a treatment for diseases associated with TDO activity and expression.

Abstract: Disclosed are metallocene compounds, catalyst compositions comprising a metallocene compound, processes for polymerizing olefins, methods for making catalyst compositions, olefin polymers and articles made from olefin polymers. In an aspect, a metallocene compounds contain a fluorenyl ligand and a cyclopentadienyl ligand which are bridged by a linking group, in which the metallocene is characterized by [1] the cyclopentadienyl ligand being substituted with a C2-C18 heterohydrocarbyl group having an oxygen atom positioned 5 atoms distance or less from the cyclopentadienyl ligand and [2] the linking group having a pendant C3-C12 alkenyl group having a terminal C?C double bond. It has been discovered that a catalyst composition comprising a metallocene compound having these features can produce polyethylene having a low melt index in the absence of a second metallocene.

Abstract: A casing for semiconductor packages that includes a plurality of press-fit pins is disclosed. Specific implementations include a shaft including a first end and a second end. The first end may include a head. The press-fit pin may include a bonding portion included at the second end. The bonding portion may include a first section extending substantially perpendicular from a longest length of the shaft. The bonding portion may also include an angled section coupled to a bonding foot. The bonding foot may be configured to be ultrasonically welded to a substrate.

Abstract: Embodiments of the present disclosure propose a shift register, a driving method thereof, a gate driving circuit, and a display device. The shift register includes: an inputting sub-circuit, an outputting sub-circuit, a resetting sub-circuit, a pulling-down sub-circuit, a pulling-down controlling sub-circuit, and a voltage regulating sub-circuit. The voltage regulating sub-circuit is coupled to a pulling-down node, a pulling-down controlling node, a second clock signal terminal, a third clock signal terminal, a first voltage signal terminal and a second voltage signal terminal, and is configured to regulate a voltage at the pulling-down controlling node based on a first voltage signal from the first voltage signal terminal and a second voltage signal from the second voltage signal terminal, under a control of the second clock signal from the second clock signal terminal, a third clock signal from the third clock signal terminal, and the voltage at the pulling-down node.