Firstly, the early warning index system of coal mine safety production was given from four aspects as per- sonnel, environment, equipment and management. Then, improvement measures which are additional momentum method...Firstly, the early warning index system of coal mine safety production was given from four aspects as per- sonnel, environment, equipment and management. Then, improvement measures which are additional momentum method, adaptive learning rate, particle swarm optimization algorithm, variable weight method and asynchronous learning factor, are used to optimize BP neural network models. Further, the models are applied to a comparative study on coal mine safety warning instance. Results show that the identification precision of MPSO-BP network model is higher than GBP and PSO-BP model, and MPSO- BP model can not only effectively reduce the possibility of the network falling into a local minimum point, but also has fast convergence and high precision, which will provide the scientific basis for the forewarnin~ management of coal mine safetv production.展开更多
The paper analyzes the characteristics of rice production in Heilongjiang Reclamation Area(HRA)and the achievements made through innovative research and practice,evaluates the standardized mode of rice cultivation and...The paper analyzes the characteristics of rice production in Heilongjiang Reclamation Area(HRA)and the achievements made through innovative research and practice,evaluates the standardized mode of rice cultivation and technical standards for rice production,which play a key role in guaranteeing the growth of grain total output in Heilongjiang reclamation area and make great contributions to the national grain safety.展开更多
The recent succession of food crisis and the rise of food scare have endangered the relationship of trust between the consumers and the primary food production parties： raisers, growers, industrial partners, distribu...The recent succession of food crisis and the rise of food scare have endangered the relationship of trust between the consumers and the primary food production parties： raisers, growers, industrial partners, distributors, public institutions, as well as the secondary food production parties： consumer groups and medias. Facing a potentially risky product, the consumer in his collect of risk diminishing information, should be able to trust something or someone. But in order to trust a risk diminishing element, he must first trust its emitter. In order to enhance consumer perception towards Lebanese food safety, we began a survey on a sample of a population randomly selected. The study found significant difference among education levels concerning attitude towards food safety and knowledge. No significant effect of demographic profile and sex on food handling practices was found. These findings increase concerns about consumer safety knowledge and practices. It is advised that a national survey should be conducted, followed by a properly designed food safety public health campaign, to enhance household food safety awareness.展开更多
文摘Firstly, the early warning index system of coal mine safety production was given from four aspects as per- sonnel, environment, equipment and management. Then, improvement measures which are additional momentum method, adaptive learning rate, particle swarm optimization algorithm, variable weight method and asynchronous learning factor, are used to optimize BP neural network models. Further, the models are applied to a comparative study on coal mine safety warning instance. Results show that the identification precision of MPSO-BP network model is higher than GBP and PSO-BP model, and MPSO- BP model can not only effectively reduce the possibility of the network falling into a local minimum point, but also has fast convergence and high precision, which will provide the scientific basis for the forewarnin~ management of coal mine safetv production.
文摘The paper analyzes the characteristics of rice production in Heilongjiang Reclamation Area(HRA)and the achievements made through innovative research and practice,evaluates the standardized mode of rice cultivation and technical standards for rice production,which play a key role in guaranteeing the growth of grain total output in Heilongjiang reclamation area and make great contributions to the national grain safety.
文摘The recent succession of food crisis and the rise of food scare have endangered the relationship of trust between the consumers and the primary food production parties： raisers, growers, industrial partners, distributors, public institutions, as well as the secondary food production parties： consumer groups and medias. Facing a potentially risky product, the consumer in his collect of risk diminishing information, should be able to trust something or someone. But in order to trust a risk diminishing element, he must first trust its emitter. In order to enhance consumer perception towards Lebanese food safety, we began a survey on a sample of a population randomly selected. The study found significant difference among education levels concerning attitude towards food safety and knowledge. No significant effect of demographic profile and sex on food handling practices was found. These findings increase concerns about consumer safety knowledge and practices. It is advised that a national survey should be conducted, followed by a properly designed food safety public health campaign, to enhance household food safety awareness.
