10 results about "Mathematical probability" patented technology

The invention discloses an early warning method and an early warning device for a purchaser system enclosing mark, and relates to the technical field of information data processing. The method comprises the steps of performing abnormal behavior risk identification according to current bidding information, and obtaining a behavior risk identification result and a behavior analysis score; according to the historical bidding information, performing historical bid winning risk identification by using a mathematical probability statistical method to obtain a historical risk identification result; based on an IF-IDF algorithm and an NLP style analysis tool, performing file analysis according to the to-be-analyzed bidding information to obtain a file risk identification result; based on an external network, acquiring associated company information of the to-be-analyzed bidding information, and constructing an associated company atlas; bidding company association risk identification is carried out according to the association company atlas, and an association company risk identification result is obtained; and issuing direct early warning information and the risk level of the fund-string bidding, and taking countermeasures according to the risk level of the fund-string bidding. The early warning method provided by the invention is high in efficiency and quick in response aiming at bid enclosing and bidding of the purchasing system.

The utility model discloses a mathematical probability demonstration device, including the bottom plate still include: the support leg of fixed connection in the left and right ends of bottom plate top, the top of support leg is fixedly connected with the demonstration box, the front end fixedly connected with annular visual board in the inside of demonstration box, the inside fixedly connected with circular fixed box of annular visual board, the top and bottom of circular fixed box are provided with arc backflow groove and through -hole respectively. The utility model discloses through the effect of demonstration box, driving motor and annular visual board, make this demonstration device have the advantages such as time -saving and labor -saving and convenient operation, solved the current mathematical probability demonstration device in the process of using generally needs a group of data, and a group of data's acquisition needs test personnel to rotate demonstration box after grabbing the demonstration ball inside and viewing, leads to the whole demonstration process very tedious time -consuming problem.

The utility model relates to a mathematics probability demonstration teaching aid which comprises a circular ring, a plurality of partition pieces are fixedly installed on the inner circumferential side of the circular ring in an annular array distribution mode, the partition pieces form a disc, a center cylinder is fixedly connected to the middle of the top side of the disc, and a rotating rod is connected to the middle in the center cylinder. The top end of the rotating rod extends to the position above the center cylinder. The utility model relates to the technical field of mathematical probability demonstration teaching. When the mathematical probability demonstration teaching aid is used, the hooks can be directly taken down and hung on the top side wall of the central cylinder, so that the disc is divided into a plurality of areas, and meanwhile, the disc can be divided into a plurality of areas by drawing out different numbers of hooks and winding lamp strips, so that probability demonstration can be conveniently carried out on the conditions of different areas; therefore, probability demonstration can be carried out under distribution of various area areas, and the effect of avoiding influence on demonstration teaching is achieved.

The utility model relates to the technical field of mathematics probability demonstration, and discloses a probability demonstration device for applied mathematics, which comprises a base, the upper surface of the base is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a transmission plate, and the inner wall of the transmission plate is slidably connected with a first sliding rail. The lower surface of the first sliding rail is fixedly connected to the upper surface of the base, a fixing rod is slidably connected to the interior of the transmission plate, a rotating plate is fixedly connected to the outer wall of the rear side of the fixing rod, and a limiting assembly is arranged on the outer wall of the upper side of the base and used for limiting the L-shaped plate. According to the probability demonstration device, the hydraulic cylinder is started to push the transmission plate to drive the fixed rod and the rotating plate to rotate, drive the connecting rod and the L-shaped plate to rotate, drive the telescopic rod to move rightwards and stretch at the same time, then angle adjustment is conducted on the demonstration box, diversified probability demonstration is achieved, and the learning experience effect is enhanced.

The utility model relates to the technical field of probability demonstration devices, in particular to a random probability demonstration device for mathematical probability teaching, which comprises a bottom plate, a motor is fixedly connected onto the bottom plate, a color disc is assembled on an output shaft of the motor through a placement component, and a power supply and a control module are further fixedly connected onto the bottom plate. The power source and the control module are arranged on one side of the motor, the power source controls the motor to rotate through the control module, the motor rotates to drive the color disc to rotate, the color disc is assembled through a mounting part and a placing component, a support is further fixedly connected to the bottom plate, and the support is arranged on the other side of the motor. A color sensor and a distance sensor are fixedly connected to the support, and the distance sensor is arranged on the inner side of the color sensor. According to the utility model, the color discs are fixed on the placing member through the mounting members, and different color discs can be detached and replaced by using the mounting members, so that different numbers of color probability events can be demonstrated.

The invention relates to the technical field of probability models, in particular to a college mathematics probability model teaching aid which comprises a base, the top end of the base is fixedly connected with a workbench through a plurality of vertical rods, the top end of the workbench is provided with a transmission mechanism, the transmission mechanism comprises two supporting plates, the side wall of one supporting plate is rotationally connected with a round rod, and the side wall of the other supporting plate is rotationally connected with a rotating shaft. A shaking box is fixedly connected to the side end of the round rod, a baffle is rotationally connected to the top end of the shaking box through two supporting bases, an auxiliary hinge base is fixedly connected to the bottom end of the baffle, a linkage rod is hinged to the auxiliary hinge base, and a supporting rod is movably connected to the other supporting plate; the probability teaching box has the beneficial effects that the situation that the position of a ball cannot be really disorganized in the box due to the centrifugal force effect is avoided, so that the randomness of the ball after the ball moves in the shaking box is ensured, and the demonstration requirement of probability teaching on a random state is met.

The invention discloses a mathematical probability demonstration device, and relates to the field of mathematical probability teaching, and the mathematical probability demonstration device comprises a supporting plate, the top of the supporting plate is rotatably connected with a supporting shaft, and the outer surface of the supporting shaft is fixedly connected with a mounting disc. The mounting disc, the plurality of transmission shafts and the mounting frame integrally rotate; the second driving mechanism is meshed with the first transmission gear through a transmission gear ring, so that the transmission shaft rotates while revolving; the overturning mechanism drives a transmission rack through a second telescopic driving piece, so that a second transmission gear and an overturning shaft rotate in a reciprocating mode, then shaking boxes are driven to rotate in the horizontal direction and the vertical direction, the multi-direction rotation simulates manual shaking, dices in the shaking boxes are fully overturned, all the shaking boxes act consistently, extra randomness caused by shaking differences is avoided, and the shaking effect is improved. The same shaking condition each time is ensured, a foundation is laid for subsequent accurate probability statistics, and a demonstration result can more truly reflect a dice probability rule.

The utility model relates to the technical field of experiment boxes, in particular to a mathematical probability simulation experiment box which is convenient to collect, improves the working efficiency and enhances the practicability. Comprising an experiment table, a collecting mechanism comprises an experiment barrel, the experiment barrel and the experiment table are fixedly connected through two connecting plates, a first through hole is formed in the bottom end of the experiment barrel, a stepping motor is fixedly installed at the top end of the experiment table, and a rotating disc is fixedly installed at the top end of the stepping motor and provided with a plurality of second through holes; a supporting rod is fixedly installed at the top end of the experiment table, an arc-shaped plate is fixedly installed at the top end of the supporting rod, a U-shaped plate is fixedly installed on the experiment table, a collecting box is slidably installed in the U-shaped plate, a handle is fixedly installed on the collecting box, a clamping block is fixedly installed on the U-shaped plate, a clamping groove is formed in one end of the collecting box, and the clamping block and the clamping groove are clamped. The coin inserting mechanism is installed on the experiment cylinder and used for throwing out coins.

The invention discloses a discrete mathematical probability experiment demonstration device, and belongs to the technical field of teaching experiment auxiliary equipment.The discrete mathematical probability experiment demonstration device comprises a test box, a ball inlet is formed in the top surface of the test box, a stirring box is arranged on the side, close to the ball inlet, in the test box, a stirring mechanism is arranged at the bottom of the stirring box, and a first opening is formed in one side of the stirring box; the first opening is communicated with a ball outlet channel, the ball outlet channel is communicated with the outside of the test box, a limiting mechanism is arranged above the ball outlet channel, and the limiting mechanism is matched with the first opening. Experimental balls are put into the stirring box through the ball inlet, the balls are fully stirred through the stirring mechanism, and then the limiting mechanism is started to discharge the balls in the stirring box. The demonstration balls are fully dispersed by arranging the stirring mechanism, so that the accuracy of probability events is ensured; and meanwhile, the ball outlet channel only discharges one ball every time through the limiting mechanism, so that the randomness of an experimental result is ensured.

The invention provides a physical information constraint-based three-dimensional shape generation method and related equipment, and relates to the technical field of three-dimensional shape generation, a batch of training samples containing real geometric shapes and real physical attributes are sampled in a real three-dimensional object data set, and a batch of latent vectors are sampled from predefined mathematical probability distribution; training the constructed generative model by using a training sample and a latent vector to obtain a three-dimensional shape generative model; inputting target three-dimensional object data into a three-dimensional shape generation model, generating a geometric shape and a physical attribute through a physical enhanced three-dimensional shape generation module, and evaluating the visual authenticity and physical rationality of the generated geometric shape and physical attribute through a multi-modal judgment module; therefore, the geometrical shape and the physical attribute corresponding to the target three-dimensional object data are obtained, and the defects of the existing three-dimensional generation technology in the aspect of physical authenticity are overcome.