Abstract: The present invention relates to Bicycle toxin conjugates, methods for preparation, and methods of use for treating cancer.

Abstract: Disclosed is a flexible filter spectral camera. A flexible filter module includes N flexible filter units corresponding to N different wavebands, respectively, where N is a positive integer greater than or equal to 2. A CMOS (Complementary Metal Oxide Semiconductor) module is used to convert incident light into a digital signal. Any one of the N flexible filter units can be switched to a preset position to filter light emitted from a lens and transmit light at a corresponding waveband to the CMOS module. The preset position is between the lens and the CMOS module. An image processor is connected to the CMOS module and is used to convert the digital signal into an image. In accordance with the present disclosure, precision imaging of the lens is achieved, the overlapping accuracy and imaging quality of the images are improved, and meanwhile, the processing efficiency for overlapped images is improved.

Abstract: The present disclosure provides a method and system for determining an optimal flight height of an unmanned aerial vehicle (UAV), an electronic device, and a medium. The method includes: obtaining a multi-band crop spectral image of an experimental area in a preset scenario; performing data processing on the multi-band crop spectral image, to obtain multi-spectral orthographies of a plurality of sample plots; calculating a ground resolution of the multi-spectral orthography of each sample plot, simulating and determining a multi-band crop spectral image of each sample plot at a different flight height by a nearest neighbor interpolation method based on the ground resolution of the multi-spectral orthography of each sample plot; and for the multi-band crop spectral image of each sample plot at the different flight height, determining an optimal flight height corresponding to each sample plot by a hypothetical test method.

Abstract: The present disclosure relates to a rapid moisture detection device for a tea leaf processing process, and belongs to the field of moisture detection. According to the present disclosure, when a sliding unit drives a laser wave emission unit to move, the laser wave emission unit can also receive an echo reflected by tea leaves on a production line while emitting a laser wave, and then an upper computer determines the moisture content of the tea leaves on the production line based on the emitted laser wave and the received echo, so as to realize rapid, non-destructive, and high-throughput detection of the moisture content of the tea leaves.

Abstract: A method and system for determining flight height of an unmanned aerial vehicle (UAV) includes a determining device that includes a camera at bottom of the UAV carried on a three-axis self-stabilizing tripod head; and a carrier phase difference satellite positioning system (CPDSPS), a graphics processing computer (GPC) and a power supply system provided on top of the UAV The GPC is connected with the CPDSPS, the power supply system and the camera, respectively. An attitude and heading reference system (AHRS) is provided at the bottom of the three-axis self-stabilizing tripod head and connected with the GPC The GPC is configured to determine relative height of the UAV from a canopy of farmland surface crops according to position information acquired by the CPDSPS, attitude information acquired by the AHRS and ground orthographic image acquired by the camera, and determine flight height of the UAV according to the relative height.

Abstract: The present invention relates to a device and method for measuring the amount of a liquid chemical in a plant protection unmanned aerial vehicle (UAV). An ultrasonic sensor is adopted to measure a distance between a liquid chemical level in a liquid chemical measuring tube communicated with a liquid chemical tank and a top end of the liquid chemical measuring tube, and then a height of the liquid chemical in the liquid chemical tank is further determined according to an acquired attitude angle of the UAV and a distance between a central position of the liquid chemical measuring tube and a central position of the liquid chemical tank, thereby accurately measuring the amount of the liquid chemical in the liquid chemical tank of the UAV.

Abstract: A method and system for determining flight height of an unmanned aerial vehicle (UAV) includes a determining device that includes a camera at bottom of the is UAV carried on a three-axis self-stabilizing tripod head; and a carrier phase difference satellite positioning system (CPDSPS), a graphics processing computer (GPC) and a power supply system provided on top of the UAV The GPC is connected with the CPDSPS, the power supply system and the camera, respectively. An attitude and heading reference system (AHRS) is provided at the bottom of the three-axis self-stabilizing tripod head and connected with the GPC The GPC is configured to determine relative height of the UAV from a canopy of farmland surface crops according to position information acquired by the CPDSPS, attitude information acquired by the AHRS and ground orthographic image acquired by the camera, and determine flight height of the UAV according to the relative height.

Abstract: The present invention relates to a device and method for measuring the amount of a liquid chemical in a plant protection unmanned aerial vehicle (UAV). An ultrasonic sensor is adopted to measure a distance between a liquid chemical level in a liquid chemical measuring tube communicated with a liquid chemical tank and a top end of the liquid chemical measuring tube, and then a height of the liquid chemical in the liquid chemical tank is further determined according to an acquired attitude angle of the UAV and a distance between a central position of the liquid chemical measuring tube and a central position of the liquid chemical tank, thereby accurately measuring the amount of the liquid chemical in the liquid chemical tank of the UAV.

Abstract: Methods and systems for determining a cause of out of stock condition by running a decision tree against historical information associated with the out of stock item and contacting a supplier of the out of stock item to request items based on the determined cause. The system receives information associated with an out of stock item from a system storing information associated with items in a fulfillment center, the information collected over an extended period, determines a cause of the out of stock condition by running a decision tree against the received information, the decision tree includes a plurality of conditions, and predicts an out of stock condition of the item based on the determined cause. Based on the prediction, the system contacts a supplier of the out of stock item to request more items.

Abstract: Methods and systems for determining a cause of out of stock condition by running a decision tree against historical information associated with the out of stock item and contacting a supplier of the out of stock item to request items based on the determined cause. The system receives information associated with an out of stock item from a system storing information associated with items in a fulfillment center, the information collected over an extended period, determines a cause of the out of stock condition by running a decision tree against the received information, the decision tree includes a plurality of conditions, and predicts an out of stock condition of the item based on the determined cause. Based on the prediction, the system contacts a supplier of the out of stock item to request more items.

Abstract: The present invention provides a star-connected network (C1-C4, P1-P8) having a number of peripheral nodes (P1-P8) and a central control arrangement (C1-C4). Each peripheral node has means for restricting communications across the network to the central control arrangement using a respective encrypted connection unless the peripheral node has received explicit authorization from the control arrangement to set up a direct connection with another peripheral node.

Abstract: The present invention provides a star-connected network (C1-C4, P1-P8) having a number of peripheral nodes (P1-P8) and a central control arrangement (C1-C4). Each peripheral node has means for restricting communications across the network to the central control arrangement using a respective encrypted connection unless the peripheral node has received explicit authorisation from the control arrangement to set up a direct connection with another peripheral node.

Abstract: A data network, of the type in which a number of inter-connected router devices forward received packets of data towards a destination node in accordance with a routing table associated with each router is operated.

Abstract: Techniques are provided for operating a network where router devices forward received data packets towards a destination node. Each router maintains a routing table, indicating the next hop to choose in respect of different ultimate destinations m accordance with a routing protocol. Periodic communications between neighboring routers are used as confirmation that they are still able to communicate with one another. Each router compares the time since it last communicated in this way with each of its neighbors with a router dead interval and determines that the respective neighboring router, or the currently designated route thereto, has gone down if the comparison indicates that the router dead interval has elapsed without such a communication having been received. Each router performs an adaptive algorithm to modify the or each corresponding router dead interval dynamically in accordance with one or more properties of the network as measured by the router.

Abstract: A data network has a number of inter-connected router devices forward received packets of data towards a destination node in accordance with a routing table associated with each router. A trust value is assigned to one or more other router devices, or links between router devices, in the network. A route metric is calculated in respect of one or more paths for forwarding on received data packets for onward transmission towards a specified destination. A next hop destination is selected for onward transmission of each such received packet to be forwarded on the basis of the calculated route metric for each applicable path. Each route metric is calculated in dependence upon the trust value assigned to one or more of the router or routers within each such path.

Abstract: An Internet Protocol router device (10) for use in a data network comprising a plurality of nodes (10, 20, 30), wherein packets of data are sent from one node in the network to another on a hop by hop basis.

Abstract: The present invention provides a star-connected network (C1-C4, P1-P8) having a number of peripheral nodes (P1-P8) and a central control arrangement (C1-C4). Each peripheral node has means for restricting communications across the network to the central control arrangement using a respective encrypted connection unless the peripheral node has received explicit authorization from the control arrangement to set up a direct connection with another peripheral node.

Abstract: The present invention provides a star-connected network (C1-C4, P1-P8) having a number of peripheral nodes (P1-P8) and a central control arrangement (C1-C4). Each peripheral node has means for restricting communications across the network to the central control arrangement using a respective encrypted connection unless the peripheral node has received explicit authorisation from the control arrangement to set up a direct connection with another peripheral node.

Abstract: A method of combinatorial multimodal optimization uses a genetic algorithm to find simultaneous global optimal solutions to combinatorial problems. Each individual within the population is associated not only with a fitness value but with a fitness vector, using which the persistence of all of the best individuals into the next generation can be guaranteed. Phenotype as well as genotype analysis is an integral part of the method.

Abstract: A multi-protocol label switching network or domain (1), and method of operating the same. Label switching control paths are established for forwarding control packets between routers (E1-E4, C1-C6) according to control labels assigned to the control packets by a label assignment server (2). Control labels are assigned by assigning a respective unique control label to respective directional pairs of edge routers, each directional pair comprising a combination of an edge router pair and a direction between the edge routers of the pair. Traffic data paths are also established for forwarding traffic data packets between the routers according to traffic data labels assigned to the traffic data packets. The traffic data labels are distinct from the control labels, and the traffic data paths are different from the control paths.