Coupled renewal model of ocean viscous sublayer, thermal skin effect and interfacial gas transfer velocity

A previously developed renewal model included parameterizations for the thermal skin effect and interfacial gas transfer velocity. The more readily available cool skin data were used for an adjustment of the gas transfer parameterization. In this work, the renewal concept is extended to include the velocity difference across the viscous sublayer and to account for the stage of surface wave development. As a result, the empirical coefficients that enter the renewal model have been specified more accurately using laboratory data on the surface wind drift current. In addition, the coefficient linking the cool skin and gas transfer parameterization formulas has been determined from the probability distribution function for renewal events. A comparison of the upgraded renewal model with the thermal skin data collected during the COARE and more recent field programs and with gas transfer data collected during GasEx-01 experiment suggests that the renewal model can be a useful tool for producing a physically based parameterization for the interfacial CO₂ transfer velocity. Model uncertainties associated with the effect of surface films are discussed.     

BVAC.N99型真空断路器替代TDZ1型空气断路器电气接口改进方案

针对现有电力机车TDZ1型空气断路器升级换代为BVAC.N99型真空断路器项目中电气接口不兼容的问题,分析其形成的原因,并提出了解决措施。     

RS485总线在主机安全报警系统的应用

本文介绍了RS485总线在船舶主机安全报警系统的应用，以及RS485接口电路的设计和通信协议的定义。     

计算机联锁输入接口的安全性分析

计算机联锁输入信息的安全性定义,是正确设计输入接口电路的基础。合理选择输入信息采集接点,是实现输入接口安全性和可靠性的重要保证。对于单点采集和双点采集两种方案进行了分析、比较。     

轨道交通变电所综合自动化系统接口协议分析

介绍了轨道交通变电所自动化系统中典型的网络设备结构图,以及常用的物理接口:串行数据接口、以太网数据接口、硬线接口等.根据实际情况,对目前轨道交通变电所自动化系统常用的接口协议如串行RS485接口、以太网、现场总线的优、缺点进行了分析总结.     

Criteria of human-computer interface design for computer assisted surgery systems

In recent years, computer assisted surgery (CAS) systems become more and more common in clinical practices, but few specific design criteria have been proposed for human-computer interface (HCI) in CAS systems. This paper tried to give universal criteria of HCI design for CAS systems through introduction of demonstration application, which is total knee replacement (TKR) with a nonimage-based navigation system. A typical computer assisted process can be divided into four phases: the preoperative planning phase, the intraoperative registration phase, the intraoperative navigation phase and finally the postoperative assessment phase. The interface design for four steps is described respectively in the demonstration application. These criteria this paper summarized can be useful to software developers to achieve reliable and e?ective interfaces for new CAS systems more easily.     

OPC客户端设计及其在智能立体车库中的应用

通过对OPC数据访问规范和OPC客户端工作流程的研究,以C 为开发语言实现了基于定制接口的OPC客户端,介绍了OPC客户端中接收器的构建和多线程机制的实现,最后通过在智能立体车库中的应用验证了该客户端的可靠性.     

大型动车运用所接触网设计关键技术浅析

以曹庄动车运用所为例,分析了大型动车运用所的供电方案;从景观设计、道岔布置、悬挂安装3个方面论述了接触网平面布置需要注意的事项;同时叙述了接触网与检查库、洗涮库、临修库及镟轮库、踏面诊断棚、站场排水沟、综合管沟接口的重要性。     

柳南客运专线铁路四电工程接口施工监理

针对柳南客运专线铁路四电工程接口,从四电工程接口监理实践出发,对接口工程施工监理提前介入,强化过程控制,实施"1+2监控、验收"模式等,为提高四电工程接口现场管控能力,确保工程有序推进奠定了基础。     

新型电子操控终端的原理及操作

微机可控顶调速系统新型电子控制台的功能更加强大，不再单纯是一个手动发送送电命令的操作界面，现在还增设了测重等级参数设置、“CAN轮回”、电源参数设定、手动设置驼峰条件等新功能。使电子控制台的功能更多、更强。