7 results about "Population sample" patented technology

The invention discloses a multi-objective optimization method and system for centralized procurement with quantity based on MODDPG. The method comprises the following steps: constructing a collection chain multi-objective optimization model which comprises a supply enterprise, a procurement alliance and a third-party group purchase organization and is based on deep reinforcement learning and a multi-objective optimization algorithm; based on the historical state of the supply enterprise, the purchase alliance or the third-party group purchase organization, control operation is generated through a strategy network, and random variation is carried out on the control operation according to the mutation probability; executing control operation, obtaining rewards and states fed back by the environment, and adding the historical state, the control operation, the rewards and the states into an experience pool; selecting a high-quality population sample from the experience pool by using a multi-objective optimization algorithm; training a strategy network and a value evaluation network of a set sampling chain multi-objective optimization model based on the high-quality population samples; and using the trained model to generate a control operation strategy according to the current states of the supply enterprise, the purchase alliance and the third-party group purchase organization.

This invention discloses a sampling method and application for accurately evaluating the nutrient status of tea trees, and for the first time specifies the sampling time and leaf position for mature leaves and new shoots when evaluating the nutrient status of tea trees. The method involves selecting previous-year-old vegetative branches from the same growth position on the tea tree canopy surface, and topping these branches at the end of January, removing the terminal buds. In mid-to-late February, while the tea trees are still dormant, the first mature leaf at the top of the pruning cut is selected. When the dormant buds sprout and develop to one bud and two leaves, new shoot samples corresponding to the marked mature leaves are taken; mature leaves are not collected at this stage. Validation was conducted in tea gardens with 10-year and 20-year long-term nitrogen fertilization sites and with 2000 population samples. The method of this invention ensures the correlation between the nutrient status of tea trees across years, and shows a highly significant positive correlation between tea garden fertilization levels and tea tree nutrient status; it also ensures a highly significant positive correlation between the amino acid composition of new shoots and fertilization levels, and a highly significant negative correlation between the phenol-amino acid ratio and fertilization levels.

This invention designs a method for screening traits in the quantitative classification of ornamental plant germplasm, mainly consisting of the following steps: trait selection and coding, intra-germplasm consistency test, inter-germplasm discrimination analysis, principal component analysis, and Pearson correlation analysis. The scientific validity and effectiveness of the trait screening technology system proposed in this invention are verified by including species in the population sample and evaluating the kinship clustering probability distribution between species, species and varieties, and varieties, respectively, thereby indirectly reflecting the effectiveness of the trait screening technology system proposed in this invention.

The invention relates to a method for constructing castanopsis hystrix core germplasm based on an NGS-SSR molecular marker and application of the method, and belongs to the field of forest biotechnology and germplasm resource science. The method for constructing the castanopsis hystrix core germplasm based on the NGS-SSR molecular marker comprises the following steps: acquiring castanopsis hystrix germplasm resource population sample whole genome sequence data, performing variation and typing detection, performing format data conversion, and constructing the castanopsis hystrix core germplasm. The core germplasm is constructed in the castanopsis hystrix by applying the NGS-SSR technology for the first time, a set of core germplasm construction method is established, the core germplasm construction method has the advantages of high efficiency, accuracy, high flux and low cost, and a germplasm set with a limited number of core germplasm containing all germplasm resource genetic diversity is realized.

One or more tangible, non-transitory, computer-readable media stores instructions thereon that, when executed by a processing system, are configured to cause the processing system to perform various functions. The functions include receiving crosswalk data including a plurality of device identifiers and a respective plurality of household or people identifiers corresponding to the plurality of device identifiers, the crosswalk data corresponding to a sample of a population. The functions also include receiving a consumer view file including an additional plurality of household or people identifiers corresponding to the population and demographic attributes corresponding to the additional plurality of household or people identifiers. The functions also include determining a plurality of weights corresponding to the respective plurality of household or people identifiers in the crosswalk data based at least in part on the demographic attributes. The functions also include receiving viewership data and determining at least one KPI of an ad campaign based on the respective plurality of household or people identifiers, the plurality of weights, and the viewership data.

1. Name of the product in this design: Portable Population Sample Spectroscopic Rapid Detector. 2. Purpose of this design: For rapid detection of component content in grouped particulate or powdered samples. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. The bottom part is an uncommon area, so the bottom view is omitted. 6. Design 1 is designated as the basic design.

The invention discloses a method for screening a leukocyte-based methylation marker for predicting CHIP mutation, which comprises the following steps: respectively acquiring methylation sequencing data of a first population sample and a second population sample, and extracting corresponding merging intervals; aiming at each merging interval, respectively calculating methylation information of the first crowd sample and the second crowd sample on the merging interval as methylation features; and dividing the methylation features into a plurality of feature subsets for further screening to obtain a methylation marker group of CHIP mutation. By means of the screening method, the leukocyte DNA methylation marker for detecting CHIP mutation can be obtained and used for early prediction of CHIP, medical staff are helped to implement early screening of CHIP related diseases, and researchers are helped to analyze the relation between CHIP and related disease progresses.