Physiological responses to simulated firefighter exercise protocols in varying environments

For decades, research to quantify the effects of firefighting activities and personal protective equipment on physiology and biomechanics has been conducted in a variety of testing environments. It is unknown if these different environments provide similar information and comparable responses. A novel Firefighting Activities Station, which simulates four common fireground tasks, is presented for use with an environmental chamber in a controlled laboratory setting. Nineteen firefighters completed three different exercise protocols following common research practices. Simulated firefighting activities conducted in an environmental chamber or live-fire structures elicited similar physiological responses (max heart rate: 190.1 vs 188.0 bpm, core temperature response: 0.047°C/min vs 0.043°C/min) and accelerometry counts. However, the response to a treadmill protocol commonly used in laboratory settings resulted in significantly lower heart rate (178.4 vs 188.0 bpm), core temperature response (0.037°C/min vs 0.043°C/min) and physical activity counts compared with firefighting activities in the burn building.

Practitioner Summary: We introduce a new approach for simulating realistic firefighting activities in a controlled laboratory environment for ergonomics assessment of fire service equipment and personnel. Physiological responses to this proposed protocol more closely replicate those from live-fire activities than a traditional treadmill protocol and are simple to replicate and standardise.     

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用改进的单片再生剂量法测定多矿物细粒黄土的等效剂量

应用单片再生剂量法对陕西关中的全新世黄土进行细颗粒蓝光释光、红外释光和红外之后的蓝光释光的等效剂量De测定，在实验中用一固定的实验剂量（Dt≈(10%-20%)De)的释光信号来校正灵敏度的变化。在这3种释光信号中，红外之后的蓝光释光信号较为稳定，其De值较接近预测值。说明预先红外暴露去除了低能量的陷阳电子，剩下了稳定的高能量陷阱电子。     

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详细介绍了现阶段智能建筑的设备自动化系统(BAS)中BACnet和LonWorks两种开放式通信协议。对两者的功能进行了具体的对比和分析;指出了两者之间的关系是互补而不是竞争。认为在实时控制域方面,尤其在设备级适于采用LonTalk协议,而在信息管理域方面,上层网之间的互联适用BACnet标准。     

iButton技术在安防系统中的应用

本文介绍了一种新型的智能化信息载体iButton以及iButton在安防系统上的应用举例，着重介绍了其硬件、软件设计及工作原理。     

SABUL: A Transport Protocol for Grid Computing

This paper describes SABUL, an application-level data transfer protocol for data-intensive applications over high bandwidth-delay product networks. SABUL is designed for reliability, high performance, fairness and stability. It uses UDP to transfer data and TCP to return control messages. A rate-based congestion control that tunes the inter-packet transmission time helps achieve both efficiency and fairness. In order to remove the fairness bias between flows with different network delays, SABUL adjusts its sending rate at uniform intervals, instead of at intervals determined by round trip time. This protocol has demonstrated its efficiency and fairness in both experimental and practical applications. SABUL has been implemented as an open source C++ library, which has been successfully used in several Grid computing applications.     

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