布鲁氏菌病无疫小区建设与成效     

孙晓东  刘静  刘飞  蔡丽娟  蒋正军  范钦磊 《中国动物检疫》2023,40(4):47-49

近年来,我国将无疫小区管理理念应用到布鲁氏菌病防控,以养殖场生物安全防控作为切入点,整合优化布鲁氏菌病关键技术措施,结合科学有效的监督管理,全面推动布鲁氏菌病防控工作。本文重点从建设主体、生物安全体系、监测要点等方面介绍了布鲁氏菌病无疫小区建设标准,总结了布鲁氏菌病无疫小区建设对于提升完善养殖场生物安全体系,推进养殖企业从传统防控到生物安全管理、风险管理转型升级,促进产业高质量发展等方面的成效,以期对下一步工作推进提供参考。  相似文献   

柔性坐标测量机参数辨识方法   总被引：3，自引：1，他引：3  

汪平平  费业泰  尚平  程文涛 《农业机械学报》2007,38(7):129-132

设计了一种六自由度关节式柔性坐标测量机,并对该测量机测量方程中的参数进行了辨识,提出了一种快速简易的单点锥窝标定方法。该方法基于单点锥窝提供的空间单点基准,利用非线性最小二乘中的高斯-牛顿法,求解测量机测量方程的参数值。实验结果表明,该方法能够有效提高测量机的整体精度,且操作简单、计算效率高。  相似文献   

Method to Analyze and Evaluate the Depth Profile of the Three Dimensional Residual Stresses State with X-ray   总被引：1，自引：0，他引：1  

CHEN Yu an  ZHOU Shang qi  HAN Xian bing 《保鲜与加工》2002,(1):40-43

  相似文献   

The research in processing fMRI data using temporal-spatial model based on CCA     

XIAO Ke  SU Min  WU Fei 《保鲜与加工》2006,(5):124-127

In the analysis of cognition of human brain,the fMRI is often used.Corelation is a common method in fMRI data detecting,but its ability should be improved.Based on the Canonical Correlation Analysis(CCA),the temporal correlation and spatial correlation are used together to detect the activated area in the fMRI data.By the application of the method in simulation data and fMRI data,it shows that this method is effective in the detecting.  相似文献   

A Study on the Mathematical Models for Two Dimensional Guillotine Cullting-stock     

Cai Zhengjun  Gong Jian  Liu Fei 《保鲜与加工》1996,(2):82-88

Based on the analysis and study on some existed models for two-dimensional Guillotine Cutting-Stock problem, it is pointed out that some kinds of the models may miss some good cutting patterns,and some may result in inadequate solutions because of only considering the patterns with the smallest waste. A kind of revised two-dimensional cutting-stock models are developed,which transform the two-dimensional problem into the one-dimensional one using the dimension-decreasing heuristic method and whose initial patterns are considered comprehensively. In this kind of models, not only the least waste,but also the other constraints,such as the demands and the relative area of the order plates are considered.  相似文献   

A New Method for Parameterized Design of Metallic Doors and Windows     

SONG Yu chuan  YAN Chun ping  LIU Fei  LIU Wan qi 《保鲜与加工》2001,(4):36-39

According to the graphics characteristics of metallic doors & windows design and based on the research of graphics dimension restriction problems. This paper provides a new method for parameterized design of metallic doors & windows in virtue of expression solution. In this method, the restrictions of graphic elements have been changed into the parameter expressions of sizes and positions of graphic elements. Through the calculation of such expressions, the parameter driven method has been reached. Thus the parameterization of graphics can be easier and quicker than before. It can be used to setup the open parameterized graphics libraries.  相似文献   

Two-dimensional Optimum Cutting Stock Method Based on Internet and Its Implementing Technique     

YAN Chun ping  LIU Fei  Liu Xi gang 《保鲜与加工》2001,(5):1-4

Two dimensional Optimum Cutting Stock is a NP complicated problem. Each of optimum software gets the cutting results by using proximate and heuristic methods. But different optimum methods and their optimum software may not realize perfect effect according to certain data framework. Furthermore, enterprises can not buy lots of optimum software to choose the most optimized plan. Because of such problems, this paper provides a two dimensional optimum cutting stock method based on Internet and offers the real implementing technique of such method. The experiments, show that this method promotes the general optimum effect of two dimensional optimum cutting stock greatly.  相似文献   

Strictly Calculation to the Cross Section of Electron-antielectron Collision Under Chain Approximation     

JIANG Min  FANG Zhen-yun  SANG Wen-long  GAO Fei  LI Xiao-han 《保鲜与加工》2007,(1):109-113

  相似文献   

A Study on the Practical Algorithm for One Dimensional Equal Stock Cutting Problem     

Gong Jian Liu Fei Xu Zhongjun 《保鲜与加工》1997,(1):92-97

Based on alalysing the mathematical models for one dimensional equal stock cutting problem,a knapsack column generation algorithm has been constructed,which is a successive approximate algorithm for the practical engineering.In the end of this paper,some computational examples have been presented,which show that the convergence and optimum results of the algorithm are quite good.  相似文献   

Composition of Application Based on Business Rule     

WANG Jun  SONG Yu-chuan  LIU Fei  YIN Chao 《保鲜与加工》2006,(11):15

In order to support flexibility and reusability of application composition based on Internet,with business rule and Aspect-Oriented Programming(AOP) which divides a business process into a control business process and a core business process,the authorsgive composition mechanism.A technique of implementation is analyzed.At last,the primary application of the above work in Chongqing of China is introduced,as well as some effects acquired.  相似文献