The traceability management system for pigs based on personal digital assistant （PDA） was constructed by software engineering method to provide the traceability management for pork safety. This traceability system i...The traceability management system for pigs based on personal digital assistant （PDA） was constructed by software engineering method to provide the traceability management for pork safety. This traceability system included information managements for pig breeding and pig quaran- tine inspection supervision. It also realized the record and supervision of pig information, feed usage, veterinary drug usage and quarantine inspec- tion. We mainly introduced the designs of systemic structure and functional structure of the traceability system and key techniques of system imple- mentation.展开更多
GIS applications to mobile devices are becoming i nc reasingly popular, utilizing a di-verserange of devices. Many of these devices suffer from serious constraints in three main areas: processor speed, memory space an...GIS applications to mobile devices are becoming i nc reasingly popular, utilizing a di-verserange of devices. Many of these devices suffer from serious constraints in three main areas: processor speed, memory space and screen size. This paper presents a GIS application, called "MacaoMap", that is intended for heavily resource-co nstrained handheld devices. MacaoMap is a tourism-oriented map application of t he Macao territory for PalmOS and Pocket PC personal digital assistants. It was designed to perform satisfactorily on devices with as little as 16 MHz processor speed, and requires only 500 KB available memory for the GIS application and al l GIS data. Memory requirements are kept low through a specially designed data f ormat. The main challenge of satisfactory map drawing speed is addressed through a variety of techniques that were developed for this application. The paper des cribes the application’s data format, outlines the map drawing techniques, and points out the areas for future development.展开更多
During the last decade, spatio-temporal databases have become increasingly important in many applications such as geographic information systems （GIS） and engineering information systems. This paper discusses the de...During the last decade, spatio-temporal databases have become increasingly important in many applications such as geographic information systems （GIS） and engineering information systems. This paper discusses the design and implementation of a geocomputing platform for the development of location-based services （LBS） focusing on mobile mapping. During the analysis, design, and implementation of the geocomputing platform, an effective method is proposed for the real-time processing of geographic information acquired by a camera attached to a personal digital assistant （PDA）. This method combines location information given by the global position system （GPS） with man＇s ability to recognize the location of objects and their geographical relationship to improve object mapping.展开更多
基金supported by the Agricultural Science and Technology Innovation Project of Yunnan Province(2008LA020)sub-topic of National Key Technology R&D Program(2006BAD14B04)
文摘The traceability management system for pigs based on personal digital assistant （PDA） was constructed by software engineering method to provide the traceability management for pork safety. This traceability system included information managements for pig breeding and pig quaran- tine inspection supervision. It also realized the record and supervision of pig information, feed usage, veterinary drug usage and quarantine inspec- tion. We mainly introduced the designs of systemic structure and functional structure of the traceability system and key techniques of system imple- mentation.
文摘GIS applications to mobile devices are becoming i nc reasingly popular, utilizing a di-verserange of devices. Many of these devices suffer from serious constraints in three main areas: processor speed, memory space and screen size. This paper presents a GIS application, called "MacaoMap", that is intended for heavily resource-co nstrained handheld devices. MacaoMap is a tourism-oriented map application of t he Macao territory for PalmOS and Pocket PC personal digital assistants. It was designed to perform satisfactorily on devices with as little as 16 MHz processor speed, and requires only 500 KB available memory for the GIS application and al l GIS data. Memory requirements are kept low through a specially designed data f ormat. The main challenge of satisfactory map drawing speed is addressed through a variety of techniques that were developed for this application. The paper des cribes the application’s data format, outlines the map drawing techniques, and points out the areas for future development.
基金supported by the Basic Science Research Program through the National Research Foundation (NRF) funded by Korea government (MEST) under Grant No. 2012-0005127 and No. 2011-0026536
文摘During the last decade, spatio-temporal databases have become increasingly important in many applications such as geographic information systems （GIS） and engineering information systems. This paper discusses the design and implementation of a geocomputing platform for the development of location-based services （LBS） focusing on mobile mapping. During the analysis, design, and implementation of the geocomputing platform, an effective method is proposed for the real-time processing of geographic information acquired by a camera attached to a personal digital assistant （PDA）. This method combines location information given by the global position system （GPS） with man＇s ability to recognize the location of objects and their geographical relationship to improve object mapping.
