劳伦斯小说的矿冶书写:以《查太莱夫人的情人》为例

劳伦斯作为矿冶作家的身份常常被人忽视。其实作为矿冶作家,他的小说中蕴含着许多矿冶文化因子。文章以他最后一部凝聚毕生心血的小说《查太莱夫人的情人》为例,分析劳伦斯对矿工、矿场主的描写,对劳资双方之间紧张对立关系的揭露。一部矿冶文化史也是一部人性斗争史,矿冶文明在形成发展过程中经历了惊心动魄的人性较量。从矿冶文化的视角细读劳伦斯的矿冶小说,有助于丰富对矿冶文学文体特征的理解。     

面向集团企业的商业智能系统构建研究

概述了商业智能的涵义及实现过程,在分析集团企业的商业智能需求及模式的基础上,以中石油某集团公司为例,提出了一个面向集团企业的具体的完整的商业智能解决方案.     

露天石灰石采矿权设置方案爆破作业危害风险分析

本文分析石灰石露天开采的爆破作业对周边保护物的不同危害因素及其危害形式,总结前人的经验和成就,提出结合保护物的受损及破坏特征,利用已有的地质资料和矿山开采经验,推出拟设露天石灰石矿的开采设计参数,并选取合适的预测公式评价保护物是否可能被破坏,以此分析拟设露天石灰石采矿权未来开采活动对周边保护物的危害风险,保证露天石灰石采矿权设置的安全合理性。     

Information resources estimation for accurate distribution-based concept drift detection

Machine learning applications must continually utilize label information from the data stream to detect concept drift and adapt to the dynamic behavior. Due to the computational expensiveness of label information, it is impractical to assume that the data stream is fully labeled. Therefore, much research focusing on semi-supervised concept drift detection has been proposed. Despite the large research effort in the literature, there is a lack of analysis on the information resources required with the achievable concept drift detection accuracy. Hence, this paper aims to answer the unexplored research question of “How many labeled samples are required to detect concept drift accurately?” by proposing an analytical framework to analyze and estimate the information resources required to detect concept drift accurately. Specifically, this paper disintegrates the distribution-based concept drift detection task into a learning task and a dissimilarity measurement task for independent analyses. The analyses results are then correlated to estimate the required number of labels within a set of data samples to detect concept drift accurately. The proximity of the information resources estimation is evaluated empirically, where the results suggest that the estimation is accurate with high amount of information resources provided. Additionally, estimation results of a state-of-the-art method and a benchmark data set are reported to show the applicability of the estimation by proposed analytical framework within benchmarked environments. In general, the estimation from the proposed analytical framework can serve as guidance in designing systems with limited information resources. This paper also hopes to assist in identifying research gaps and inspiring new research ideas regarding the analysis of the amount of information resources required for accurate concept drift detection.     

基于Apriori算法的船舶交通事故关联规则分析

为有效分析船舶交通事故的潜在因果关系,预防和控制事故的发生,采用关联规则方法对相关数据进行有效挖掘,制定船舶交通事故关联规则挖掘流程,建立船舶交通事故关联规则分析模型.基于Apriori算法对船舶交通事故数据进行关联规则分析,挖掘事故间的强关联规则.对所挖掘出的强关联规则进行分析,发现事故致因因素间的潜在关系,并提出事故防范对策以保障海上交通安全.     

基于群体特征的社交僵尸网络检测方法

攻击者通过在社交网络中部署由大量社交僵尸账号组成的社交僵尸网络,对社交网络进行渗透,严重危害了社交网络和用户的信息安全.我们首次提出一种基于群体特征的社交僵尸网络检测方法.提取社交僵尸网络中账号注册时间集中、昵称相似和活跃时间一致3个群体特征,结合数据挖掘算法,设计一种社交僵尸网络的检测方法.在对新浪微博中48万个账号的检测实验中,检测出多个社交僵尸网络,共包含6 899个社交僵尸账号.较低的漏报率和误报率表明该方法对于社交僵尸网络和僵尸账号的检测是可行和有效的.     

Football,Place, and Community in a New Zealand Mining Town, 1877–1939

Abstract

Resource towns (such as lumber camps, power plants, and mining towns) are by their very nature peripheral. They frequently exist in a space of isolation, not only geographically but also culturally as well. The South Island mining town of Kaitangata is a classic example of this process – an industrial, working class, and heavily migrant community positioned within an otherwise agricultural, conservation, and homogenous tract of rural New Zealand. Kaitangata, in the words of one writer, ‘possessed a unique character and pattern of social interaction’ that marked it out from its immediate environment. One way in which these differences manifested themselves was in the sporting activities of the town. In a part of the world where rugby union held absolute hegemony, the town broke the mould by also fielding teams in association football, rugby league, and even Australian Rules football (distinguishing itself as the only town outside of the provincial capital of Dunedin where these three sports obtained a foothold). This paper analyses how these sporting activities contributed to a unique sense of space, addressing themes including class, ethnicity, masculinity, and identity.     

煤矿区农田土壤-豆类作物系统的重金属富集状况及风险评估

以宿州煤矿区为例,通过现场采样和室内试验测定,探讨了土壤-豆类作物系统中重金属元素Cu、Pb、Zn、Cr、Cd和Mn的含量特征及富集状况,并利用潜在生态风险指数和健康风险模型对土壤及农作物的安全风险水平进行了评估,结果表明:矿区农田土壤中Cd严重超标,导致土壤潜在生态风险达到强等级程度;豆类作物对土壤中各重金属元素的富集系数依次为ZnCuCdMnPbCr,大豆与绿豆相比,更易于吸收Cu、Pb、Cd和Mn,而对Zn和Cr的富集能力稍弱;两种日均摄食量情境下,豆类作物的重金属致癌危害风险以Cr最高,风险值超出ICRP和USEPA的最大可接受风险水平,而非致癌危害风险以Cu最高,风险值高于HCEPD的可忽略风险水平。     

黄石市中小企业电子商务发展现状研究

黄石市作为矿冶城市,由于受传统矿冶营销思维的影响,在现代市场营销特别是电子商务推进方面启动较晚,在电子商务发展迅速的今天,处于一种尴尬的局面,特别是中小企业电子商务的进程更显滞后。文章收集了大量的资料,分析了黄石市中小企业电子商务发展的现状,提出了改进措施与建议。     

改进的ID3算法及其在教育信息挖掘中的应用

为有效利用上海海事大学教学管理工作多年来积累的大量数据,对分类规则挖掘常用的ID3算法进行研究,结合教育信息的特点对ID3算法进行改进,以此为基础设计并实现了教育信息挖掘系统;利用所实现的系统对学生成绩和基本信息数据库进行挖掘分析,找出课程之间的相关性以及学生基本信息对学生就业方向的影响,并对挖掘结果进行比较分析,为学校的教学管理提供参考.