6 results about "Prey predator" patented technology

This invention belongs to the field of oilfield development technology and discloses an electromagnetic monitoring fracture parameter identification method based on an improved marine predator algorithm. This invention optimizes and implements the IMPA algorithm, including improved population initialization, optimized optimization parameters, and adaptive boundary condition constraints. The improved population initialization uses a Sobol sequence to replace the traditional non-uniform random distribution population initialization. Parameter optimization proposes a staged optimization with differential partitioning to replace the traditional three-stage optimization of the MPA algorithm. Adaptive boundary condition constraints aim to discard local optimal solutions caused by parameter boundaries. A hydraulic fracturing single-fracture length model and an azimuth model are constructed. Electromagnetic monitoring involves supplying power to the fracturing wellbore and measuring the potential difference on the ground. The model forward modeling calculates the potential difference anomalies observed at all surface measuring points under the constructed single-fracture model, achieving precise identification of the single-fracture length and azimuth, thereby guiding the evaluation of hydraulic fracturing effectiveness.

Duck nesting container (10, 36) comprising a substantially tubular, light- and air-permeable shell (12, 36) enclosing a nesting hollow, with a preferably front-end access opening (20) and preferably a tongue-shaped projection (26) extending from a bottom edge (22) of the access opening (20) as an entry or landing ramp. To improve protection against nest predators, especially birds of prey, a projecting protective shield (30) extends from an upper edge (28) of the access opening (20).

The application discloses a kind of based on predator mechanism's no navigation structure group confrontation method, including steps Step1.Acquire no navigation structure group information;Step2.Analysis no navigation structure group movement model;Step3.Develop predator movement model;Step4.Predator implements the destruction to group structure;Step5.Determine confrontation effect;The above-mentioned method of the application describes the communication characteristics and cooperative behavior characteristics of no navigation structure group by analyzing fish school emergence mechanism and movement model, and a corresponding predator model is designed accordingly, and the cohesion and centripetal property of no navigation structure group are destroyed by the predator, to realize the effective confrontation to the whole no navigation structure group.The predator model proposed in the application is simple, can realize the effective confrontation to no leadership structure group with point-to-surface, and has the advantages of high confrontation efficiency ratio.

The present invention discloses a nearshore ecological environment safety early warning and dynamic process analysis system and method, which relate to the field of data processing. The present invention deploys sensors in the nearshore environment, collects current nearshore pollution data through the sensors, and collects population size data of predators and prey in the nearshore ecological environment based on the sensors and satellite remote sensing; detects whether the current predator population size and the current prey population size are within a reasonable range; and determines whether to issue an alarm; collects historical pollutant concentration data, and constructs a trend compliance model for pollutant concentration changes over time; constructs a nearshore ecosystem dynamics model; obtains predator population size data and prey population size data at future moments based on current nearshore environment data and the nearshore ecosystem dynamics model, detects whether the predator population size data and the prey population size data at future moments are within a reasonable range, and determines whether to issue an alarm.

The invention discloses a method for constructing food-grade Janus liquid drops based on interaction of a non-reciprocal predator and a prey. The method comprises the following steps: firstly, respectively taking a zein solution or a sodium alginate solution as a water phase, and dispersing in an oil phase to prepare single-phase liquid drops; then, mixing the two incompatible liquid drops under the action of controlled external force, and driving the zein liquid drops and the sodium alginate liquid drops to generate directional combination by utilizing predator-prey interaction induced by interfacial property difference between the liquid drops, so as to construct the food-grade Janus liquid drops. Effective control on the yield of the food-grade Janus liquid drops is realized by regulating and controlling the quantity ratio and the particle size ratio of the zein liquid drops to the sodium alginate liquid drops and the molecular weight of the sodium alginate. The construction method of the food-grade Janus liquid drops is easy to operate and high in yield, and has good application prospects in the fields of food, medicine, cosmetics and the like.