基于网络问答社区的话题识别与分析——以知乎“老年人”话题为例

[目的/意义]针对目前基于网络的话题识别与分析方法的局限性,提出针对网络问答社区的话题识别与分析方法,为此类网站的话题识别与分析提供参考。[方法/过程]以改进的中文分词技术为基础,构建网络问答社区的话题识别指标,通过线性加权方式计算权重,结合关键词提取方法确定话题关键词,对话题关注焦点进行提取,对分布情况进行测度。依据所提出的改进方法,以知乎网站为数据来源,从话题关键词、关键词分布以及热点子话题3个角度对"老年人"话题焦点进行识别与分析。[结果/结论]研究表明,该方法具有科学性和可行性,不仅拓展了社会问题的分析数据源,也为"积极开展应对人口老龄化行动"提供了决策依据。     

Helical angle measurement of worm by a coordinate measuring machine and its uncertainty evaluation

The purpose of the study concerns the measurement of worm’s helical angle by a coordinate measurement machine in the ambient industrial environment. The novel measurement method and sampling strategy were described firstly. This method used the coordinate measurement machine to measure both of the worm gear’s left and right surfaces. The worm surface was reconstructed based on the measured data of all the sampling points. Then a middle cylinder was established to truncate the fitted worm surfaces, and the truncated spiral lines were straightened to calculate the helical angle. The measurement uncertainty of worm’s helical angle was evaluated by taking the difference of calculated helical angles along the truncated spiral lines on both the left and right side surfaces of the worm. Twenty-four measurement experiments show that the maximum measurement error of the proposed method is 0.105, and the measurement error ratios are all less than 3.5?. The result means that the measurement method can realize the precision measurement of worm’s helical angle and can be employed in the generally industrial application.     

教育公平基本理论研究

教育公平是社会公平问题在教育领域的折射和反映,也是公平价值观念在教育领域的体现和延伸。随着教育在社会生活中的地位日益凸显,教育公平问题日渐引起人们关注。本文试对有关教育公平的基本理论作一研究。     

享其实者怀其树饮其流者怀其源--论"新儒家"的存在意义与其内在理论困难

"新儒家"是20世纪全球性保守主义思潮的重要组成部分,他们对人类命运与人生的意义的积极运思以及在这一运思中所阐述与引发的诸多问题,仍然是我们在相当长时期内所必须认真地加以思考和面对的。儒家的价值与存在理由并不依托于某一经济形态,亦不依托于外在事功的有效性,而在于其为生活世界提供的意义具有内在超越性。目前新儒学的理论困难在于其如何处理儒学与生活的关系或者说如何重建儒学与实际生活世界的联系的问题。     

中国传统服饰文化的旅游价值及其开发初探

本文首先分析了我国传统服饰文化资源的4个主要特点,然后从旅游开发的角度分析论述了我国古代传统服饰的旅游开发价值,最后从服饰旅游产品设计的角度对我国传统服饰文化旅游资源的产品设计提出了初步的建议。     

我国难美体育项目竞赛表演市场价值趋向分析

运用社会调查法，以体育观众为研究对象，对我国难关体育项目竞赛表演市场的价值趋向进行分析，结果表明该市场具有直观性、趣味性和艺术性特征．     

英语夸张辞格的心理机制及其审美功能

本文以审美心理学为依据,从三个方面分析了英语夸张辞格生成的心理机制———审美求异心理、审美知觉的选择性,审美情感以及审美想象;并根据其心理机制,论述了英语夸张辞格创造出的形象美、意象美和意境美。     

一种凸轮升程误差的非接触式测量新方法

分析现有几种凸轮升程误差测量方法的优、缺点后，提出一种基于图像处理的凸轮升程误差的非接触式测量新方法．理论分析和比较实验结果表明，该测量方法简便易行，测量精度较高，具有一定的应用价值．     

Accelerometer data requirements for reliable estimation of habitual physical activity and sedentary time of children during the early years - a worked example following a stepped approach

This study presents a worked example of a stepped process to reliably estimate the habitual physical activity and sedentary time of a sample of young children. A total of 299 children (2.9 ± 0.6 years) were recruited. Outcome variables were daily minutes of total physical activity, sedentary time, moderate to vigorous physical activity and proportional values of each variable. In total, 282 (94%) provided 3 h of accelerometer data on ≥1 day and were included in a 6-step process: Step-1: determine minimum wear-time; Step-2: process 7-day-data; Step-3: determine the inclusion of a weekend day; Step-4: examine day-to-day variability; Step-5: calculate single day intraclass correlation (ICC) (2,1); Step-6: calculate number of days required to reach reliability. Following the process the results were, Step-1: 6 h was estimated as minimum wear-time of a standard day. Step-2: 98 (32%) children had ≥6 h wear on 7 days. Step-3: no differences were found between weekdays and weekend days (P ≥ 0.05). Step-4: no differences were found between day-to-day variability (P ≥ 0.05). Step-5: single day ICC’s (2,1) ranged from 0.48 (total physical activity and sedentary time) to 0.53 (proportion of moderate to vigorous physical activity). Step-6: to reach reliability (ICC = 0.7), 3 days were required for all outcomes. In conclusion following a 7 day wear protocol, ≥6 h on any 3 days was found to have acceptable reliability. The stepped-process offers researchers a method to derive sample-specific wear-time criterion.     

口传—仪式叙事中的民间历史记忆——以广西和里三王宫庙会为个案

宗教信仰也常常在口传活动中得到表达,有时则以无声的语言——仪式行为的方式展开。然而,更为普遍的情形则是无声的语言与有声的口传同时并存。换句话来说,对宗教信仰的观照离不开口头传述与信仰实践两方面的双重分析。本文拟将着重探讨口传一仪式叙事的过程中三王父子的英雄形象与其事迹是如何被侗族民众集体想象与建构的,借此追溯社会成员共同分享的、回忆的集体记忆。