In order to capture and storage video data real-time for carrier-based photoelectric warning system, An acquisition and storage system based on FPGA is designed. To complete the asynchronous interface timing of the ca...In order to capture and storage video data real-time for carrier-based photoelectric warning system, An acquisition and storage system based on FPGA is designed. To complete the asynchronous interface timing of the camera and the storage system, the video data which come from infrared camera and visible light camera is stored to FIFO by FPGA, and then four SDRAM as cache and ping-pong operation cache-data storage to the CF card, this structure not only takes advantage of high-speed reading and writing skills of CF card, but also to ensure the integrity of the video data. In the final experiment proved that the system can be effectively applied to ships the photoelectric warning scanning system, its performance fully meet the needs of practical application.展开更多
In the 21 st century, ocean container carriers are facing high competition in cargo volume attraction and retention from their business to business customers. The main focus of this study is on the methodological issu...In the 21 st century, ocean container carriers are facing high competition in cargo volume attraction and retention from their business to business customers. The main focus of this study is on the methodological issues in the analysis of shipping lines＇ competitiveness. A system review of the literature is conducted in three stages to identify the key factors influential to the competitiveness of liner shipping companies. An initial search has found 897 studies, which were then reduced to 39 after further scanning and review. The systematic review has elicited 15 key selection criteria which were further reduced through analytic hierarchy process to five critical factors influential to the liner shipping companies＇ competitiveness. For example, among the most frequently cited factors are the freight rate, service quality, scheduling, handling equipment and information technology. Based on the findings from the systematic literature review, a conceptual framework to identify the main determinants of the liner operators is developed, and implications for future research are also discussed.展开更多
文摘In order to capture and storage video data real-time for carrier-based photoelectric warning system, An acquisition and storage system based on FPGA is designed. To complete the asynchronous interface timing of the camera and the storage system, the video data which come from infrared camera and visible light camera is stored to FIFO by FPGA, and then four SDRAM as cache and ping-pong operation cache-data storage to the CF card, this structure not only takes advantage of high-speed reading and writing skills of CF card, but also to ensure the integrity of the video data. In the final experiment proved that the system can be effectively applied to ships the photoelectric warning scanning system, its performance fully meet the needs of practical application.
文摘In the 21 st century, ocean container carriers are facing high competition in cargo volume attraction and retention from their business to business customers. The main focus of this study is on the methodological issues in the analysis of shipping lines＇ competitiveness. A system review of the literature is conducted in three stages to identify the key factors influential to the competitiveness of liner shipping companies. An initial search has found 897 studies, which were then reduced to 39 after further scanning and review. The systematic review has elicited 15 key selection criteria which were further reduced through analytic hierarchy process to five critical factors influential to the liner shipping companies＇ competitiveness. For example, among the most frequently cited factors are the freight rate, service quality, scheduling, handling equipment and information technology. Based on the findings from the systematic literature review, a conceptual framework to identify the main determinants of the liner operators is developed, and implications for future research are also discussed.
