6 results about "Otter" patented technology

The present application relates to the technical field of wild animal habitat reconstruction, and particularly relates to a method and device for constructing habitat of otter in alpine valley region. The technical scheme is as follows: a method for constructing habitat of otter in alpine valley region, comprising the following steps: digging an artificial nest in an external environment where otters live by means of a constructing device, the artificial nest comprises a hole mouth, a tunnel, a nest, an expanded part, a tunnel and a hole mouth which are connected to each other in sequence, and the number of the nest and / or the expanded part is at least one; placing a nest model which is the same as the shape of the artificial nest in the artificial nest, and after the placement is completed, constructing an otter foraging environment near the artificial nest. The present application can artificially construct the habitat of otter in alpine valley region, restore and reconstruct the habitat of otter, and provide excellent foraging sites and habitat nests for otters.

The invention relates to the technical field of berth-quay crane scheduling optimization, in particular to a berth-quay crane scheduling optimization method. Comprising the steps of obtaining the number of ships and the number of quay cranes, setting algorithm parameters, initializing a population, calculating the three-target fitness of each individual in the population, recording a global optimal solution, entering a main loop to iteratively update the position of the individual, and updating the position based on the diving predation behavior of the turnip and the symbiotic relationship of the simulated turnip and the Eurasian otter. Quantifying action effects through a reward and punishment function, updating a Q table by adopting a Q learning algorithm, storing long-term reward expectation of state-action, selecting an optimal action in a current state according to the Q table by adopting an epsilon-greedy strategy, and attenuating an exploration rate according to an index; and screening a Pareto optimal solution in combination with non-dominated sorting and crowding distance, and outputting an optimal scheduling scheme after the maximum number of iterations is reached. According to the method, the berth quay crane scheduling scheme can be optimized by combining the improved kirschner algorithm with the quay crane failure rate, and the reliability of quay crane equipment is improved.

The invention belongs to the technical field of marine fishery, and provides an euphausia superba stringer trawl with a bird repelling effect. The device comprises a stern arm frame provided with a winch mechanism and a trawl, the winch mechanism comprises a warp winch and an integrated cable winch located below the warp winch, the warp winch comprises a warp capable of being attracted by magnetic substances, and the integrated cable winch comprises an integrated cable internally provided with the magnetic substances; the integrated cable is sequentially provided with a wear-resistant rubber layer and a braid layer from outside to inside, the braid layer is formed by weaving metal wires made of corrosion-resistant metal, and the surface of the wear-resistant rubber layer is provided with remarkable colors which comprise one or more of red or yellow. Birds are repelled by the passive sound production structure and the visual appearance driven by water flow, so that accidents of injury or death of the birds due to accidental rope collision are effectively reduced; the durability and the service life of the integrated cable are improved; and the passive generation structure works reliably in an extremely low-temperature environment and has no energy consumption requirement.

The present application relates to the technical field of animal breeding, and discloses a kind of otter breeding nest box, including nest box, excrement collection mechanism, aperture adjusting mechanism and monitoring mechanism;Rest chamber and nursery chamber are formed by partition in nest box, and first aperture is opened through rest chamber, and second aperture is opened through partition;Excrement collection mechanism is arranged in rest chamber;Aperture adjusting mechanism is arranged at first aperture;Monitoring mechanism is arranged in rest chamber and nursery chamber.The present application provides safe, concealed breeding place, attracts otter to live in, monitors otter activity and nest environment in real time through monitoring mechanism, guides female otter and young to defecate and mark in specified position through excrement collection mechanism in the form of pebble, and excrement collection mechanism collects and preserves otter excrement, realizes monitoring and protection to otter, improves breeding success rate and promotes population recovery.

1. Name of the designed product: toy (waterfowl). 2. Use of the designed product: for playing. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.