In this paper a dynamic food chain model for Hong Kong which simulates the transfer of radioactive substances from a fallout deposition via the food chain into the human bodies is built. The model is based on the RADF...In this paper a dynamic food chain model for Hong Kong which simulates the transfer of radioactive substances from a fallout deposition via the food chain into the human bodies is built. The model is based on the RADFOOD model and the BirchallJames algorithm. The radionuclides 13if and 90Sr representing the short-term and long-term risk situations have been studied as sample cases. Various types of crops,and the dietary pattern of the public have been collsidered. The resulting internal radiation doses have been calculated. The results are obtained for food consumption starting at various time after the fallout deposition and for different consumption durations.展开更多
在食品供应网络日益繁杂以及对信息透明度要求愈来愈高的当下,射频识别(Radio Frequency Identification,RFID)与区块链技术已在食品追溯和管理中扮演了至关重要的角色。RFID技术依靠其自动化的数据获取能力与即时监督功能,大幅提升了...在食品供应网络日益繁杂以及对信息透明度要求愈来愈高的当下,射频识别(Radio Frequency Identification,RFID)与区块链技术已在食品追溯和管理中扮演了至关重要的角色。RFID技术依靠其自动化的数据获取能力与即时监督功能,大幅提升了供应链的作业效率及数据的精确度,而区块链技术以其去中心化及数据不可更改的属性,为食品溯源和质量控制提供了一个可靠的保障机制。RFID与区块链技术的双重结合,有利于打造一个全程透明化的食品追踪体系,对于解决信息孤岛和数据篡改等问题极为关键。本文立足于食品供应链的现实要求,深入研究了这两项技术的融合应用,以期为加强食品安全监管和优化供应链提供参考。展开更多
To model the operation of food traceability, features of food supply chain are studied. The aim of the paper is to build an abstract model of food traceability, and to gain better understanding of food traceability an...To model the operation of food traceability, features of food supply chain are studied. The aim of the paper is to build an abstract model of food traceability, and to gain better understanding of food traceability and food safety. Based on the analysis of consumers＇ behavior of searching for traceability information, a finite state automaton for food traceability is presented by using automata theory. The states of the food supply chain are represented by a state transition diagram. The automaton in this paper simulates the entire food supply chain and provides a theoretical basis for the behavior description and structural design of a food traceability system.展开更多
文摘In this paper a dynamic food chain model for Hong Kong which simulates the transfer of radioactive substances from a fallout deposition via the food chain into the human bodies is built. The model is based on the RADFOOD model and the BirchallJames algorithm. The radionuclides 13if and 90Sr representing the short-term and long-term risk situations have been studied as sample cases. Various types of crops,and the dietary pattern of the public have been collsidered. The resulting internal radiation doses have been calculated. The results are obtained for food consumption starting at various time after the fallout deposition and for different consumption durations.
文摘在食品供应网络日益繁杂以及对信息透明度要求愈来愈高的当下,射频识别(Radio Frequency Identification,RFID)与区块链技术已在食品追溯和管理中扮演了至关重要的角色。RFID技术依靠其自动化的数据获取能力与即时监督功能,大幅提升了供应链的作业效率及数据的精确度,而区块链技术以其去中心化及数据不可更改的属性,为食品溯源和质量控制提供了一个可靠的保障机制。RFID与区块链技术的双重结合,有利于打造一个全程透明化的食品追踪体系,对于解决信息孤岛和数据篡改等问题极为关键。本文立足于食品供应链的现实要求,深入研究了这两项技术的融合应用,以期为加强食品安全监管和优化供应链提供参考。
基金supported by the Science and Technology Public Projects of Sichuan under Grant No. 07GF001-0032010 Ministry of Science and Technology Innovation Fund for SMEs under Grant No. 10C26225123015
文摘To model the operation of food traceability, features of food supply chain are studied. The aim of the paper is to build an abstract model of food traceability, and to gain better understanding of food traceability and food safety. Based on the analysis of consumers＇ behavior of searching for traceability information, a finite state automaton for food traceability is presented by using automata theory. The states of the food supply chain are represented by a state transition diagram. The automaton in this paper simulates the entire food supply chain and provides a theoretical basis for the behavior description and structural design of a food traceability system.
