5 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 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 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 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.