Abstract: An unmanned aerial vehicle according to certain embodiments generally includes a chassis, a power supply mounted to the chassis, a control system operable to receive power from the power supply, at least one rotor operable to generate lift under control of the control system, a line having one end coupled to the chassis and an opposite free end, wherein the free end is positioned below the chassis, and a severing mechanism operable to sever the line under control of the control system.

Abstract: The present disclosure describes a method for the planarization of ruthenium metal layers in conductive structures. The method includes forming a first conductive structure on a second conductive structure, where forming the first conductive structure includes forming openings in a dielectric layer disposed on the second conductive structure and depositing a ruthenium metal in the openings to overfill the openings. The formation of the first conductive structure includes doping the ruthenium metal and polishing the doped ruthenium metal to form the first conductive structure.

Abstract: Provided is a method for analyzing the stability of a PMSG-WT connected to a weak power grid considering the influence of power control. New energy power generation mostly uses a perturbation and observation (P&O) method for maximum power point tracking, and nonlinear discontinuous links therein make stability analysis difficult. The present application analyzes the stability of the PMSG-WT connected to the weak grid system based on a describing function method, and fully considers the nonlinear discontinuous links in the power loop, thus making the analysis result more accurate. At the same time, the describing function method is a method that can quantitatively calculate the frequency and amplitude of oscillation. The analysis method of the present application can provide a powerful and good reference for oscillation suppression and controller design.

Abstract: The present disclosure provides a semiconductor package structure and a method of manufacturing the same. The semiconductor package structure includes a semiconductor structure, a conductive trace and a tenting structure. The semiconductor structure has a first surface, a second surface and a third surface extending between the first surface and the second surface, and the first surface, the second surface and the third surface define a through-silicon via recessed from the first surface. The conductive trace is disposed adjacent to the first surface, the second surface and the third surface of the semiconductor structure. The tenting structure covering the TSV of the semiconductor structure. A cavity is defined by the tenting structure and the TSV.

Abstract: Provided are an echo delay time estimation method and system thereof, wherein the echo delay time estimation method is executed by the echo delay time estimation system with the following steps: receiving a testing signal and a received signal and executing a time to frequency analysis to generate a testing signal spectrogram and a received signal spectrogram; respectively executing a characteristic signal dynamic detection calculation for the testing signal spectrogram and the received signal spectrogram to generate a testing signal characteristic dynamic vector and a received signal characteristic dynamic vector; executing a cross-correlated vector estimation for the testing signal characteristic dynamic vector and the received signal characteristic dynamic vector to generate a cross-correlated vector; and calculating an echo delay time according to the cross-correlated vector.

Abstract: A Mobile Lawyer system includes a 360 degree HD video camera configured for mounting on a vehicle; a display screen configured for mounting inside the passenger compartment of a vehicle; and a Mobile Lawyer App downloaded and installed on a mobile telephone in communication with the video camera and display screen, configured, upon command from a user, to notify an attorney located remotely via a cellular and/or computer network, and to display a video image of the remote attorney on the display screen (or the screen of the mobile telephone), and to live-stream a 360 degree video captured by the video camera to the Internet for viewing by the remote attorney and for cloud storage. The introduction of a lawyer on-demand into a police encounter can help to defuse and de-escalate the situation. The lawyer can serve as a live observer, witness, and intermediary who can provide live legal guidance to the user.

Abstract: A Mobile Lawyer system includes a 360 degree HD video camera configured for mounting on a vehicle; a display screen configured for mounting inside the passenger compartment of a vehicle; and a Mobile Lawyer App downloaded and installed on a mobile telephone in communication with the video camera and display screen, configured, upon command from a user, to notify an attorney located remotely via a cellular and/or computer network, and to display a video image of the remote attorney on the display screen (or the screen of the mobile telephone), and to live-stream a 360 degree video captured by the video camera to the Internet for viewing by the remote attorney and for cloud storage. The introduction of a lawyer on-demand into a police encounter can help to defuse and de-escalate the situation. The lawyer can serve as a live observer, witness, and intermediary who can provide live legal guidance to the user.

Abstract: An unmanned aerial vehicle according to certain embodiments generally includes a chassis, a power supply mounted to the chassis, a control system operable to receive power from the power supply, at least one rotor operable to generate lift under control of the control system, and a winch mounted to the chassis. The winch includes a reel and a motor. The reel has a line wound thereon, the line having a free end. The reel includes a circumferential channel in which a wound portion of the line is wound onto the reel. The circumferential channel includes an inner portion, an outer portion, and a passage connecting the inner portion and the outer portion. The motor is operable to rotate the reel under control of the control system to thereby cause the line to wind onto and off of the reel, thereby causing the free end of the line to raise and lower.

Abstract: A quick-assembly seat includes a seat body, a clamping assembly and a driving assembly. The clamping assembly includes a clamping member slidably connected to the seat body, and the clamping member includes a first driving surface. The driving assembly includes a driving member slidably connected to the seat body, and the driving member includes a second driving surface. The driving member is configured to slide relative to the seat body, such that the second driving surface presses against the first driving surface, and the driving member drives the clamping member to slide relative to the seat body to clamp or unclamp a quick-release part. The quick-release assembly includes the quick-assembly seat and the quick-release part that are connected. The quick-release part can be connected to a photographing device, and the seat body can be mounted on a bracket. The photographing device can be quickly assembled on the bracket and disassembled.

Abstract: Disclosed are a method and electronic apparatus for providing information related to an order. The method includes acquiring quantity information of an order item in a fulfillment center and information on a period related to order quantity calculation for the order item, confirming a reference date for the order quantity calculation and a reference period starting from the reference date based on the information on the period, determining estimated consumption information of the order item by the reference date and estimated demand information of the order item for the reference period, and providing information on an order quantity of the order item calculated based on the quantity information, the estimated consumption information, and the estimated demand information.

Abstract: Provided is a method of providing information related to item scrap, the method including at least one of confirming information on an item scrapped in a fulfillment center, confirming a cause of scrapping the item based on the information on the item including a code life of the item and an average sales amount of the item, and providing information indicating the cause of scrapping the item.

Abstract: Provided is a method of providing information related to an item shortage, the method including confirming information on an item of which a shortage occurs in a fulfillment center, confirming a cause of an item shortage based on the information on the item, and providing information indicating the cause of the item shortage.

Abstract: A multi-currency allocation assembly line includes a machine core module, a plastic packaging module, a sorting assembly line, and a manipulator. The machine core module is used for storing banknotes, and outputting banknotes into a banknote receiving funnel according to a system instruction. Among the machine cores in an array, the machine cores respectively store different banknotes, and the banknotes output by the different machine cores are then respectively conveyed, by means of the manipulator, to the plastic packaging module for plastic packaging and are then conveyed to the sorting assembly line, so as to complete banknote allocation, packaging and sorting in one step, thereby greatly increasing the banknote allocation efficiency and minimizing manual errors during manual operation.

Abstract: Disclosed is a method of providing information related to an order by an electronic apparatus, the method including acquiring necessary order information including information on at least one order item, information on an order quantity of the at least one order item, and information on a lead time of the at least one order item, confirming a reference date based on the information on the lead time, confirming information on a remaining storage capacity of a fulfillment center on the reference date, confirming a target order item whose order quantity is to be adjusted from the necessary order information when order quantity corresponding to the necessary order information exceeds the remaining storage capacity of the fulfillment center on the reference date, and providing updated order information in which the order quantity of the target order item is adjusted.

Abstract: A speech enhancement method and a speech enhancement system are provided. The speech enhancement method performs two-stage noise suppression by using digital signal processing and neural network approach. The first-stage noise suppression generates artifact signals by reducing stationary noise in the digital audio signals. The second-stage noise suppression performs voice activity detection and further reduces non-stationary noise in the artifact signals. The result of the voice activity detection is fed back to establish or update a noise model used in the first-stage noise suppression.

Abstract: An example charging station for an unmanned aerial vehicle (UAV), the charging station generally including a nest and a charging device. The nest includes an upper portion and a lower portion. The upper portion defines an upper opening sized and shaped to receive a landing apparatus of the UAV, and a diameter of the nest reduces from a first diameter at the upper opening to a second diameter at the lower portion. The charging device is mounted in the nest, and includes a first contact pad and a second contact pad. The charging device is configured to apply a voltage differential across the first contact pad and the second contact pad such that the charging station is operable to charge a power supply of the UAV via the landing apparatus.

Abstract: A data transmission method includes receiving a service request sent by a terminal device. The method also includes determining, based on the service request, a target transmission path of service data corresponding to the service request and a change policy corresponding to the target transmission path. The method further includes changing, according to the change policy, a current content delivery network (CDN) to a target CDN. The target CDN includes a plurality of serving nodes corresponding to the target transmission path. The method additionally includes sending an indication message to a first serving node in the target CDN to indicate the first serving node to send the service data to the terminal device through the target transmission path; or sending an indication message to a second serving node in the target CDN to indicate the second serving node to send the service data to the terminal device.

Abstract: The present disclosure discloses a speech recognition method and apparatus, and relates to the field of speech and deep learning technologies. A specific implementation scheme involves: acquiring candidate recognition results with first N recognition scores outputted by a speech recognition model for to-be-recognized speech, N being a positive integer greater than 1; scoring the N candidate recognition results based on pronunciation similarities between candidate recognition results and pre-collected popular entities, to obtain similarity scores of the candidate recognition results; and integrating the recognition scores and the similarity scores of the candidate recognition results to determine a recognition result corresponding to the to-be-recognized speech from the N candidate recognition results. The present disclosure can improve recognition accuracy.

Abstract: The present invention provides a compound having a structure of formula (I), a preparation method and use thereof, and a pharmaceutical composition containing the compound, wherein R is methyl, ethyl, propyl, vinyl or propenyl. The present invention also provides a crystalline form of the compound, a preparation method and use of the crystalline form, and a pharmaceutical composition comprising the crystalline form. The compounds having the structure of formula (I) of the present invention are present in a solid form, which not only can solve the problem of clopidogrel resistance, but also can solve the problem of severe hemorrhagic side effect and poor safety of some drugs, as well as the problem of poor stability of existing compounds. It can be developed into an ADP receptor antagonist antiplatelet agent with clear therapeutic effect, no resistance and better stability.

Abstract: An illustrative example embodiment of an elevator door interface monitor includes at least one hook having a portion that is configured to be situated across the interface and moveable responsive to contact with an item situated at least partially in the interface. An indicator provides an indication of an item in the interface based on movement of the hook responsive to contact with the item.