73,656 research outputs found

    基于引文内容分析的引用情感识别研究

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    [目的/意义]针对自动识别论文引用情感问题,提出一种基于引文内容分析的识别方法并进行可视化展示,克服基于简单引用频次计量无法区分不同引用情感的问题。[方法/过程]首先,利用正则表达式抽取出论文全文中的引文内容信息; 然后,利用 TF-IDF 算法筛选出引用情感特征词,结合情感词典,利用情感分析技术对引文内容进行引用情感识别; 最后,利用可视化工具展示出引用情感整体分布情况。[结果/结论]该方法能够有效识别出抗衰老领域论文数据集中引用情感情况。实验结果显示,该领域正面引用占总引用次数的21% ,中立引用占总引用次数的 78% ,负面引用仅占总引用次数的 1% 。与传统引文网络相比较,基于引用情感的可视化图谱可以有效识别出不同引用情感在整体数据集合上的分布情况。</p

    Design and Implementation for Daily Load Prediction Management System of Wenzhou Electric Grid

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    电力负荷预测是电力系统管理的重要组成部分,对电网的安全、经济运行起着重要的作用。随着电网的发展和电力改革的不断深入,研究电力负荷预测方法并开发高效、实用的负荷预测管理系统已成为重要的课题。 本文主要对温州电网日负荷预测管理系统的设计与实现以及短期负荷预测方法进行了一系列的研究。针对温州电网调度部门的实际需求,根据温州电网的负荷特性及温州的气候特征,应用数据挖掘技术对温州电网历史负荷数据、气象数据进行相关性研究。本文开发了集综合数据管理、负荷分析与预测、负荷预测上报考核管理为一体的电网短期负荷预测管理平台,为温州电网日负荷预测提供定性、定量的分析,并实现自动预测功能,从而提高了负荷预测精度和工...Electrical load prediction is an important part of power system management, it plays an important role for safe and economic operation of power system.With the development of the electrical load and the continuous deepening of the reform of electric power, it has become an important topic to research the electrical load prediction method and develop the most efficient and practical load prediction...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323179

    The Development of a New Type of Medical Rehabilitation Brace for Lower Limbs

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    本文阐述了一种新型医用下肢康复支具的研制过程。该装置主要由承重装置、负重装置、负重调节装置以及压力检测装置等结构组成,具有调节、设定以及控制负重载荷等功能,可使行内固定术后的下肢骨折患者早期进行负重、行走功能锻炼,促进其骨折愈合及肢体功能康复,减少术后并发症,具有一定的实用价值。The paper expounded the development of a new type of medical rehabilitation brace for lower limbs. The device was mainly composed of different structures including the hip weight-bearing device, the foot weight-bearing device, the weight-bearing adjustment device and the pressure detection device. The brace was designed to allow patients to carry out weight-bearing exercises and walking exercises in early postoperative period after receiving internal fixation of lower limb fracture. It could also promote fracture healing and functional recovery of lower limbs and reduce postoperative complications, which is of certain clinical value

    Fault diagnosis and fault-tolerant control for nonlinear systems with linear output structure

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    Article describes the process of fault diagnosis and fault-tolerant control for nonlinear systems with linear output structure
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