面向移动智能终端的人体心率监护系统设计与实现

高质量的长期健康医疗监护逐渐成为全世界人们关注的焦点。为预防突发心脏病所带来的风险,论文结合临床最常见的健康指标心率,采用基于随机森林的心率预测模型,设计了一款面向移动智能终端的可穿戴、可交互,具有实时心率采集、异常心率检测和心率异常预警等功能的小型人体心率监护系统。实验结果表明,该心率监护系统能实现用户心率的实时监测和未来时刻心率的预测,心率预测正确率可达86.67%,预测精确度可以满足用户的需求。     

基于CNN-RF的嵌入式数控系统故障诊断研究

采用Stacking集成策略,融合卷积神经网络(CNN)和随机森林(RF)法提出一种故障诊断方法CNN-RF。该方法不仅能准确提取数据集中的数据特征,而且针对数据集中故障数据数量不足的问题能提供平衡数据集误差的有效方法,以提高诊断的准确性。分别采用单独模型和集成后的模型对采集到的嵌入式数控系统实时运行数据进行分析处理。结果表明:利用CNN-RF模型进行嵌入式数控系统故障诊断的准确度较高,验证了该模型的正确性。     

供电企业基于三层分析模型的线损异常分析及处理研究

线损精益化管理一直都是国家电网公司一项重点工作,近几年线损数据获取技术日趋成熟,但是分析方法依旧匮乏,严重影响了高损治理的效果。为解决电网运行中高损治理不佳的问题,我们提出了用大数据分析方法来解决传统线损管理问题——供电企业基于三层分析模型的线损异常分析及处理研究。首先,搭建了一个由Hampel抗差算法、加权皮尔逊算法和随机森林算法三种不同算法构成的三层线损异常分析模型;通过该模型,可以结合不同用户用电量大小不一的特点,自上而下的分析大电量异常用户和小电量异常用户。然后将该模型嵌入公司已有的线损监控平台中,可以实现对全省线损数据的实时监测、有效挖掘、深度分析、精准定位和工单管控,形成基于三层分析模型的线损异常分析及处理新方法。该方法对分析处理10kV高损线路和0.4kV高损台区中效果显著。     

平原地区木材安全问题的调查与建议

随着国民经济的快速发展,木材需求呈现出快速增长的态势。在国内木材供不应求的情况下,木材安全问题日益凸显。平原地区是我国重要的木材供给区域,在保障我国木材安全中具有较大潜力。通过对平原地区木材生产的实地调研,本文对加强森林资源培育、木材加工业发展、木材生产与农民增收、境外森林资源开发、惠林政策等问题进行了分析并提出了建议。     

贯彻三部委《意见》精神发展造纸林基地的实践

介绍了国家三部委《关于加快造纸工业原料林基地建设的若干意见》发布前后,南纸股份有限公司建设原料林基地的有关情况和基地发展存在的问题。     

景谷县高海拔地区桉树引种推广成效显著

介绍云南云景林纸股份有限公司在景谷县引种桉树获得成功的情况及推广种植的成功实践,提出在景谷县除6.66万公顷思茅松核心基地之外发展公司＋农户＋基地”4万公顷桉树纸浆林基地的计划和目标。     

Turbidity control and fisheries enhancement in a bottomland hardwood backwater system in Louisiana (U.S.A.)

In response to a noticeable decline in recreational fishing in the formerly productive Larto—Saline backwater complex of east central Louisiana, a study was begun to identify causative factors for the decline and to determine effective methods to remedy the problem. To this end, water quality and fisheries surveys were conducted in the system for the study period 1 July, 1981 to 30 June, 1989. Data collected during the early years of the study indicated chronically high turbidity (> 100 FTU) to be the major factor limiting game fish production. The high turbidity can be related to man-made alterations of natural flood patterns that had changed the major source of backwater flooding from Black River to the highly turbid Red River. In September, 1986, a construction project was undertaken to restore flood patterns to approximate natural conditions. Sampling subsequent to this construction has shown a significant decrease in turbidity and an increase in game fish production.     

浅析以生态化过程为基础的农田防护林生态景观设计

本文从疏透度、防护距离、占地面积比等方面,对农田防护林的生态化过程进行了探讨,从季相、色彩、高度、分布四个要素,对农田防护林生态景观设计进行了分析,指出了农田防护林生态景观设计的发展方向以及本研究的不足之处。     

A call triage support system for emergency medical service using multiple random forests

This paper proposes a call triage system for emergency medical service with multiple random forests (RFs). A call triage is an operation to determine the level of first‐aid service quality required based on the severity and urgency of a victim. The aim is to achieve higher overall performance and clarify the method for deciding the determination thresholds while simultaneously achieving both fail‐safe determination and overall accuracy. To achieve the former aim, we apply the RF to determine the category. Furthermore, to achieve the latter aim, we propose a new algorithm for determining the severity using multiple RFs. The results of evaluation experiment show that the proposed algorithm can provide both accuracy and fail‐safe operation in the determination of severity.