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关键词： 设备管理   电厂   数据标准化  

摘要： 信息化的资产管理已经成为电厂发展的趋势,我国电力行业在设备资产信息化建设、管理的投入不少,已经建立了各个层级的系统,但是对于各个系统的管理,以及对应设备的信息数据如何合理应用还存在不少问题。本文通过对目前电厂设备管理中存在的问题进行分析,并给出了对策应用,以促进电厂对设备资产管理水平的提升。

关键词： Automated driving   Takeover performance   Driver cognition   Electroencephalography (EEG)   Driving simulator  

摘要： To design better fallback procedures and enhance road safety for conditionally automated vehicles (SAE Level 3), it is important to understand the factors that affect driver's takeover performance (i.e., driving performance while resuming manual control). This study investigates the impacts of driver's pre-warning cognitive state (i.e., before the issuance of a takeover warning) on takeover performance. Most existing studies assess takeover performance by independently analyzing driving performance indicators (e.g., minimum time-to-collision and maximum deceleration), and thereby ignore their associated interdependencies. This study proposes a novel comprehensive takeover performance metric, Takeover Performance Index (TOPI), that combines multiple driving performance indicators representing three aspects of takeover performance: risk of collision, the intensity of the driver's response, and trajectory quality. Further, the driver's pre-warning cognitive state is estimated by analyzing neurophysiological data (i.e., brain electrical activity) measured using an electroencephalogram (EEG) for 118 participants in driving simulator experiments. Linear mixed models are estimated for takeover performance to analyze its linkages to the driver's pre-warning cognitive state, novelty in takeover experience (i.e., prior experience with a takeover situation), type of takeover warning (i.e., non-mandatory takeover vs. mandatory takeover), age, and driving experience. In this study, most drivers intervened in non-mandatory takeover scenarios and exhibited poor takeover performance. We observed three crashes across 287 runs. The study results show that takeover performance decreases with age but increases with driving experience when the driver is under certain pre-warning cognitive states, including fatigue, drowsiness, passive attention, and low level of alertness. They also illustrate that the novelty in takeover experience and mandatory takeover warning negatively affects take

关键词： Vehicles   Monitoring   Cameras   Image sensors   Biomedical monitoring   Head   Intelligent transportation system   Internet of Vehicles   image recognition   lane deviation   vehicle-to-vehicle communication  

摘要： In this paper, we design a driver behavior monitoring and warning (DBMW) framework to detect dangerous driving for enhancing road safety through the Internet of Vehicles (IoV). The designed DBMW framework applies onboard image sensors and wearable devices to detect the deviation degree of vehicles and trace the head motion of drivers, respectively. According to our review of relevant research, DBMW is the first framework for driver behavior monitoring and warning that provides the following features: 1) DBMW can keep recognizing the located lane lines and estimating the power spectral density of lane deviation for a vehicle through image sensors, 2) DBMW can keep monitoring driver behaviors and measuring the anomaly level of a driver through wearable devices, and 3) DBMW can instantly send the warning messages of potential dangerous driving to neighboring vehicles and nearby pedestrians through IoV communications as necessary, which makes vehicles and pedestrians be aware of the existence of surrounding dangerous drivers in advance to keep alerting and avoid potential accidents/collisions. In particular, the prototype consisting of an Android-based sensing unit and an Arduino-based wearable device is implemented to verify the feasibility and superiority of DBMW. Experimental results show that DBMW outperforms existing methods and can significantly improve the detection accuracy and false alarm rates of dangerous driving behaviors.

关键词： BASIC语言   程序设计  

ISBN: (纸本)9787122397829

摘要： 本书共分为9章，包括脚本程序设计、网络通信、压缩与加密、外部接口、虚拟仪器、信号处理、数据采集以及软件无线电应用等内容。

关键词： Sustainability impact   Cocoa   Oil palm   Market-based instruments   Voluntary schemes   Sub-Saharan Africa  

摘要： This perception mapping exercise elicits and synthesizes the perceptions of the main relevant stakeholder about the drivers, impacts, and challenges of cocoa and oil palm certification in Ghana. Through an institutional analysis, we identify the main stakeholders and elicit their perceptions through 36 expert interviews. Perceptions are rather diverse, reflecting stakeholder position in (and knowledge of) the certification processes for the two commodity crops. Most stakeholders perceive that market-related factors drive standard adoption, and financing-related constraints challenge their wide adoption. There are major trade-offs and power asymmetries in certification processes, manifesting differently, due to variations in the implementation approaches and overall regulations of the two value chains.

关键词： 金属封闭开关  

ISBN: (纸本)9787519860530

摘要： 全书共分7章, 主要内容包括GIS设备概述、GIS设备土建基础、GIS及HGIS设备母线安装、GIS设备现场安装、GIS设备信号分析、GIS设备运维注意事项和GIS设备常见异常及分析。

关键词： Building information modelling (BIM)   Digital twin (DT)   Facilities management (FM)   Literature review   Operation &   maintenance (O&   M)  

摘要： Facilities Management (FM) has received increasing attention from the Architecture, Engineering, Construction and Operation (AECO) industry over the last decade. Disruptive technologies have the potential to advance the Operation and Maintenance (O&M) phase in different application fields. With the increasing industry interest, there is a need to review the current status of research developments in FM. In this review, 70 journal articles published from 2011 to 2020 were reviewed. This paper aims to provide a comprehensive review of the applications of disruptive technologies for FM, analyse research trends and identify research gaps and potential future research directions. This article focuses on only academic articles including topics, such as operations and maintenance, information management, emergency management and energy management. Eventually, it is hoped that this review will provide researchers with clarity of where research endeavours are most needed and helpful insights to address FM challenges.

关键词： In-vehicle display   Human performance   Speeding   Speed-limit   Visual cues   Dashboard   Center stack   Traffic control devices   Human factors  

摘要： Traffic safety, and the inherent risks associated with speeding, continue to remain a national priority. Advances in both roadway and vehicle technology have created potential mechanisms to mitigate speeding behaviors. This driving simulator study evaluated the effects of alternative ways to increase driver safety by investigating the characteristics of specific driving cues and drivers' response rates to those cues. The study builds upon existing approaches to symbolically deliver Traffic Control Devices (TCDs), specifically speed alerts, at different locations within the vehicle to reduce cognitive distraction and prevent visual crowding so that drivers can properly select their speed and focus upon the roadway environment. Twenty-three participants received five visual treatments (e.g., combinations of speed alert style, presentation, and location) in a simulated environment. Participants also responded to a set of survey questions following the simulated drive. Participants were evaluated on various response factors to each visual treatment. Results showed that younger participants of the age group 18-23 responded to the visual treatment and stayed within speed limits as compared to other older and more experienced participants. Results also showed that alerts falling in the mid-peripheral visual region and alerts that flashed received an increased response rate for observing speed limits.

关键词： Multiple sclerosis   outcome measurement   cognitive impairment   automobile driving   computer simulation   driving performance  

摘要： Background: Drivers with multiple sclerosis (MS) may experience visual-cognitive impairment that affects their fitness to drive. Due to limitations associated with the on-road assessment, an alternative assessment that measures driving performance is warranted. Whether clinical indicators of on-road outcomes can also predict driving performance outcomes on a driving simulator are not fully understood. Objective: This study examined if deficits in immediate verbal/auditory recall (California Verbal Learning Test-Second Edition;CVLT2-IR) and/or slower divided attention (Useful Field of View (TM);UFOV2) predicted deficits in operational, tactical, or strategic maneuvers assessed on a driving simulator, in drivers with and without MS. Methods: Participants completed the CVLT2-IR, UFOV2, and a driving simulator assessment of operational, tactical, and strategic maneuvers. Results:: Deficits in immediate verbal/auditory recall and slower divided attention predicted adjustment to stimuli errors, pertaining to tactical maneuvers only, in 36 drivers with MS (vs 20 drivers without MS;F(3, 51)=6.1,p=0.001, R-2 =0.3, R-adj(2) = 0.2). Conclusion: The CVLT2-IR and UFOV2 capture the visual and verbal/auditory recall, processing speed, and divided attention required to appropriately adjust to stimuli in a simulated driving environment. Clinicians may use the CVLT2-IR and UFOV2 as precursors to driving performance deficits in drivers with MS.