Abstract: The present disclosure relates to a data flow forwarding abnormality detection method. In one example method, a switching device through which a to-be-detected data flow passes is determined by a controller. At least one flow entry in the switching device that matches the to-be-detected data flow is obtained. The at least one flow entry comprises actual traffic and a match field. The actual traffic is a value of a counter corresponding to the match field. An overdetermined equation set is established based on the actual traffic and theoretical traffic of a data flow in the switching device that matches the match field. Based on the overdetermined equation set, a determination is made on whether the at least one flow entry is abnormal.

Abstract: The present application provides a multiple primary color conversion method, including: determining color triangles according to color coordinates of a target color; computing grayscale components of l primary colors corresponding to the target color in the color triangles; in step S130, obtaining initial grayscales of l primary colors; in step S140, judging whether there is an overflow grayscale; if yes, then performing step S160, if no, then performing step S150; in step S150, adjusting initial brightness components corresponding to grayscale components of the same primary color as the overflow grayscale, computing grayscale components of l primary colors in color triangles including the primary color of the overflow grayscale, and performing steps S130 and S140; in step S160, determining the initial grayscales of l primary colors as grayscales of l primary colors of the target color.

Abstract: A software defined network (SDN) system, controller, and controlling method, where the SDN system includes at least one Nth level controller and at least two (N+1)th level controllers belonging to the Nth level controller, where the (N+1)th level controller is configured to receive a first message sent by a node belonging to the (N+1)th level controller, and when the first message is a cross-domain message according to status information of each node that is managed by the (N+1)th level controller, forward the first message to the Nth level controller to which the (N+1)th level controller belongs, and the Nth level controller receives the first message, and perform decision processing according to status information of the (N+1)th level controller that is managed by and belongs to the Nth level controller and status information of boundary nodes of the (N+1)th level controller belonging to the Nth level controller.

Abstract: A software defined network (SDN) system, controller, and controlling method, where the SDN system includes at least one Nth level controller and at least two (N+1)th level controllers belonging to the Nth level controller, where the (N+1)th level controller is configured to receive a first message sent by a node belonging to the (N+1)th level controller, and when the first message is a cross-domain message according to status information of each node that is managed by the (N+1)th level controller, forward the first message to the Nth level controller to which the (N+1)th level controller belongs, and the Nth level controller receives the first message, and perform decision processing according to status information of the (N+1)th level controller that is managed by and belongs to the Nth level controller and status information of boundary nodes of the (N+1)th level controller belonging to the Nth level controller.

Abstract: A pixel driving circuit, a driving method thereof, and a display device are provided. According to the pixel driving circuit, a data voltage is provided to a first electrode of a driving transistor; a storage sub-circuit is charged or discharged; a first voltage signal from a first voltage terminal is provided to a control electrode of the driving transistor, and a second voltage signal from a second voltage terminal or a third voltage signal from a third voltage terminal is provided to a first node; the data voltage and a threshold voltage of the driving transistor are written to the control electrode of the driving transistor, to turn on a second electrode of the driving transistor and the third voltage terminal, to control a light-emitting element to emit light.

Abstract: An electric pump includes a rotor (6) formed in a cup shape integrally assembled to a rotor shaft (10) extended from a motor (3) side to a crank mechanism side inside a case body (2) in a state where an opening is directed to a shaft end on the motor side and rotatably supported by an intermediate bearing (13) arranged inside the opening, an eccentric cam (6d) integrally provided with a top surface portion of the rotor (6) in the axial direction, which is eccentric to a shaft center of the rotor shaft (10), and a crank shaft (12) one end side of which is assembled to an outer periphery of the eccentric cam (6d) through a cam bearing (11) and the other end side of which is connected to the pump side, in which a distance between the intermediate bearing (13) and the eccentric cam (6d) to which the crank shaft (12) is connected is reduced as short as possible, thereby suppressing occurrence of vibration and noise as well as reducing the device size in the axial direction by shortening a shaft length of the rotor

Abstract: The present disclosure provides a hose for transporting used fracturing liquid and manufacturing method thereof. The hose may include an outer layer, an enhancement layer and an inner layer. The outer layer may include a first polymer. The enhancement layer may include a synthetic fiber. The inner layer may include a second polymer. The surface of the outer layer may include an alerting object. The alerting object may include at least one of a luminous layer, a light band, a reflective layer, an identification layer or a sound generating object. The luminous layer may include at least one of a strip-shaped luminous layer, a ring-shaped luminous layer or a spiral-shaped luminous layer, arranged on the outer surface of the outer layer.

Abstract: The present disclosure provides a method, an apparatus, and a system for cooperative defense on a network. Alarm information sent by a security device of a first subnet that is being attacked is received by a controller; the controller generates flow table information according to the alarm information, and forwards the flow table information to a switching device of the first subnet and a switching device of at least one second subnet, which is equivalent to that, after detecting an attack, a security device of a subnet generates alarm information, and shares, by using the controller, the alarm information with a switching device of the subnet and a switching device of another subnet that is not being attacked, to form networkwide cooperative defense, thereby enhancing network security.

Abstract: A NAT entry management method and a NAT device are disclosed. The method includes: receiving and storing, by a NAT device, a connection parameter, where the connection parameter includes an address of a controller; receiving a packet sent by a network device, where a source address of the packet is a private address of the network device and a destination address of the packet is the address of the controller; performing NAT on the packet, where an after-NAT source address of the packet is a public address; and when a static entry condition is met, generating a target static NAT entry, where the static entry condition includes that the destination address of the packet is the address of the controller. This can prevent aging of the NAT entry from affecting communication between the network device and the controller.

Abstract: The present invention provides a multi-layer hose comprising a cover layer, comprising a first polymer, an enhancement layer comprising woven filaments, and an inner lining, comprising a second polymer, wherein the first polymer and the second polymer are dissimilar. The first polymer is preferably a polymer with good wear resistance properties, e.g., thermoplastic polyurethane (TPU), TPU/PVC, or PVC, or PVC/NBR. The second polymer is preferably a polymer with good chemical resistance properties, e.g., ethylene propylene diene monomer (EPDM) rubber. The present invention also provides a method of manufacturing said multi-layer hose.

Abstract: The present disclosure relates to a data flow forwarding abnormality detection method. In one example method, a switching device through which a to-be-detected data flow passes is determined by a controller. At least one flow entry in the switching device that matches the to-be-detected data flow is obtained. The at least one flow entry comprises actual traffic and a match field. The actual traffic is a value of a counter corresponding to the match field. An overdetermined equation set is established based on the actual traffic and theoretical traffic of a data flow in the switching device that matches the match field. Based on the overdetermined equation set, a determination is made on whether the at least one flow entry is abnormal.

Abstract: Conflict detection and resolution methods and apparatuses relate to the field of communications technologies. The conflict detection method includes: acquiring, by a controller, a flow path of a data flow on a network, where the flow path is used to indicate a path along which the data flow reaches an address in a destination address range from an address in a source address range through at least two intermediate nodes on the network, a first flow table rule is added to or deleted from flow tables of the at least two intermediate nodes, and the first flow table rule is any flow table rule; and determining, by the controller, whether a conflict exists according to an address range of the flow path and an address range of a security policy.

Abstract: A fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method and co-extrusion mold thereof are provided. The method includes extrusion of a cover layer with a first adhesive layer and an inner lining layer with a second adhesive layer, formation of an enhancement layer, heating and pressurizing for bonding between the cover layer and the enhancement layer and between the inner lining layer and the enhancement layer, so that the formed fracturing liquid delivery hose has resistance at least to high pressure and chemical corrosion. The cover layer and the inner lining layer can use different types of materials.

Abstract: An embodiment of the present disclosure discloses an over-temperature protection circuitry and a driving method. The circuit includes a source circuit, a comparator circuit and an output circuit, wherein the comparator circuit includes a thermistor, a first resistor and a comparator, the source circuit is connected to a first input terminal of the comparator via the thermistor and is connected to a second input terminal of the comparator via the first resistor; and the comparator circuit is configured to compare a first signal from the first input terminal with a second signal from the second input terminal, and output a control signal according to a comparison result, the control signal is an over-temperature control signal in the case that the comparison result indicates that the temperature is greater than or equal to a protection threshold, and the output circuit is configured to output an disenabling signal.

Abstract: Conflict detection and resolution methods and apparatuses relate to the field of communications technologies. The conflict detection method includes: acquiring, by a controller, a flow path of a data flow on a network, where the flow path is used to indicate a path along which the data flow reaches an address in a destination address range from an address in a source address range through at least two intermediate nodes on the network, a first flow table rule is added to or deleted from flow tables of the at least two intermediate nodes, and the first flow table rule is any flow table rule; and determining, by the controller, whether a conflict exists according to an address range of the flow path and an address range of a security policy.

Abstract: A method and a device system for producing dimethyl oxalate through high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The method comprises the following steps: adopting industrial NO, O2 and methanol as raw materials to perform an esterification reaction to produce methyl nitrite, then adopting industrial CO and methyl nitrite to perform a carbonylation reaction in a plate reactor to produce carbonylation products which mainly include dimethyl oxalate and dimethyl carbonate, separating the carbonylation products to obtain dimethyl carbonate products, and subsequently performing hydrogenation to dimethyl oxalate in the plate reactor to produce ethylene glycol products; and performing coupling recovery treatment to waste acid in the esterification reaction and purge gas in the carbonylation reaction for recycling.

Abstract: A fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method and co-extrusion mold thereof are provided. The method includes extrusion of a cover layer with a first adhesive layer and an inner lining layer with a second adhesive layer, formation of an enhancement layer, heating and pressurizing for bonding between the cover layer and the enhancement layer and between the inner lining layer and the enhancement layer, so that the formed fracturing liquid delivery hose has resistance at least to high pressure and chemical corrosion. The cover layer and the inner lining layer can use different types of materials.

Abstract: An electric pump includes a rotor (6) formed in a cup shape integrally assembled to a rotor shaft (10) extended from a motor (3) side to a crank mechanism side inside a case body (2) in a state where an opening is directed to a shaft end on the motor side and rotatably supported by an intermediate bearing (13) arranged inside the opening, an eccentric cam (6d) integrally provided with a top surface portion of the rotor (6) in the axial direction, which is eccentric to a shaft center of the rotor shaft (10), and a crank shaft (12) one end side of which is assembled to an outer periphery of the eccentric cam (6d) through a cam bearing (11) and the other end side of which is connected to the pump side, in which a distance between the intermediate bearing (13) and the eccentric cam (6d) to which the crank shaft (12) is connected is reduced as short as possible, thereby suppressing occurrence of vibration and noise as well as reducing the device size in the axial direction by shortening a shaft length of the rotor

Abstract: A method and a device system for producing dimethyl oxalate through high-pressure carbonylation of industrial synthesis gases and producing ethylene glycol through dimethyl oxalate hydrogenation. The method comprises the following steps: adopting industrial NO, O2 and methanol as raw materials to perform an esterification reaction to produce methyl nitrite, then adopting industrial CO and methyl nitrite to perform a carbonylation reaction in a plate reactor to produce carbonylation products which mainly include dimethyl oxalate and dimethyl carbonate, separating the carbonylation products to obtain dimethyl carbonate products, and subsequently performing hydrogenation to dimethyl oxalate in the plate reactor to produce ethylene glycol products; and performing coupling recovery treatment to waste acid in the esterification reaction and purge gas in the carbonylation reaction for recycling.

Abstract: Biomarkers and methods for predicting risk of a disease in particular RA are provided. Sequences of DNA are obtained. The DNA may be extracted from a sample that is collected from a subject. A relative abundance of a biomarker is then calculated based on the sequences of the DNA. The biomarker comprises a DNA sequence in a genome of Lactobacillus salivarius. A probability of the subject having the disease is obtained based on the relative abundance.