基于极限学习机算法对太湖东部湖区水源地总磷数据的自动监测分析

对太湖东部湖区金墅港和渔洋山水源地总磷自动监测值与实验室监测值进行比对分析,基于相关性分析,选取对自动监测总磷浓度影响较大的浊度、蓝绿藻和叶绿素等指标,提出可选择极限学习机隐层节点的改进极限学习机模型(IELM)修正自动监测总磷数据。结果表明,总磷自动监测值相对实验室监测值偏差较大,绝对误差范围在0.05~0.112 mg·L⁻¹,平均绝对误差为0.017 mg·L⁻¹。若以相对误差小于或等于30%作为比对合格的标准值,总磷自动监测数据合格率仅为52.9%。经过IELM算法模型训练和测试,训练均方误差为0.000 073 5,测试均方误差为0.000 103。经过模型修正后的自动监测总磷数据更接近实验室监测值,其平均绝对误差降低0.026 mg·L⁻¹,平均相对误差降低45%。按比对误差30%计算,模型修正后的总磷自动监测数据合格率为92.0%,可应用于自动监测总磷数据的修正。     

石油勘探企业双重预防机制建设研究与实践

阐述了石油勘探企业贯彻落实"风险分级管控和隐患排查治理"双重预防机制的重要性和必要性,从双管齐下的工作机制,"关口前移"的工作要求,"关键环节"的工作落地等方面就深化落实双重预防机制提出了具体管控措施,为石油勘探企业构建安全生产长效机制,实现安全可持续发展、高质量发展提供有力借鉴。     

应用属性识别模型评价运河杭州段底泥污染

利用属性识别模型，对运河杭州段底泥进行分层(浮泥层、淤泥层、基底层)，评价其中的总磷及其他7种重金属的污染程度，经研究发现：表层污染程度高于底层；污染程度最严重的是Cd和Zn，OP、Cu、Pb对污染的贡献度大大小于Zn和Cd，而As、Hg、Cr几乎没有对底泥污染作出贡献。总体而言，运河杭州段底泥污染程度属于中等污染，希望本研究能够为运河杭州段的底泥污染治理提供一定的借鉴作用。     

湘潭某新建小学安全现状及管理措施研究

为减少湘潭某新建小学校园安全事件的发生,本文采用安全检查表对该校进行安全隐患排查,通过排查发现该校存在一定的安全隐患问题,主要集中在“物的不安全状态”和“不良环境”2个方面,针对隐患依据4M理论从“人—机—环—管”4个方面提出合理可行的安全管理措施及隐患消除方法。经分析,该校校园环境中存在的安全隐患可通过采取科学有效的方法进行治理。希望本研究可以为小学校园安全管理提供一定的思路。     

基于文本挖掘的煤矿安全隐患分析

为充分有效利用煤矿安全隐患数据,揭示安全隐患数据中隐藏的重要信息和潜在规律,用于指导安全管理实践,在对安全隐患数据进行预处理的基础上,利用词云和词频统计方法展现安全隐患概况,运用文本挖掘技术和社会网络分析方法研究煤矿安全隐患信息的关联关系和分布规律。结果表明,将文本挖掘技术和社会网络分析方法应用于文本型安全隐患数据分析具有可行性,有助于煤矿企业提高对安全隐患数据的认知并制定合理的安全隐患治理措施。     

建筑工地火灾隐患分析及消防安全监管对策

随着我国城镇化建设步伐的加快,建筑工程项目不断增多,建筑工地存在的大量火灾隐患,给人员生命、财产和社会公共安全带来了极大危害。针对建筑工地存在的火灾隐患,如易燃可燃物堆积、"三合一"现象严重、缺乏统一消防管理、人员消防安全意识淡薄等问题。本文基于相关规范及实际情况,从4个方面提出了加强消防安全监管工作的相应对策和建议,为相关单位提供了一点参考和借鉴。     

“Not All Environmentalists Are Like That … ”: Unpacking the Negative and Positive Beliefs and Perceptions of Environmentalists

ABSTRACT

Limited research to date has qualitatively explored the perceptions members of the public who are not environmental activists hold of environmentalists. Therefore a qualitative survey was conducted with 89 US residents aged 21–53 (M_age?=?32.74, SD_age?=?7.89) to obtain an in-depth understanding of how non-activists within the public perceive environmentalists. Data obtained were analyzed using thematic analysis and demonstrated that non-activist perceptions of environmentalists contained both positive and negative components. Environmentalists were seen to value nature and to be actively involved in bringing about positive environmental change (positive component), yet were also viewed as aggressive in their behaviors and stubborn in their beliefs (negative component). Further still, it was found that environmentalists were more likely to be perceived positively when they engaged in individual-level, private sphere behaviors (such as recycling), and negatively when they engaged in collective-level, public sphere behaviors (such as protesting). These findings not only challenge the assumption that members of the public typically evaluate environmentalists negatively, they also outline why some individuals may fail to identify as an environmentalist and engage in pro-environmental behavior. Furthermore, they also provide some insight as to why some environmentalists find it difficult to advocate for system change that results from collective action within the public sphere.     

麻痹思想就是事故隐患

论述了对安全生产工作不能有丝毫麻痹思想,麻痹本身就是事故隐患,并以麻痹酿成事故的生动实例告诫人们麻痹是安全的大敌。     

Between Guilt and Obligation: Debating the Responsibility for Climate Change and Climate Politics in the Media

ABSTRACT

The “common but differentiated responsibility” of developed and developing countries to mitigate climate change is a core principle of international climate politics—but there is disagreement about what this “differentiated responsibility” amounts to. We investigate how newspapers in developed countries (Australia, Germany, United States) and emerging economies (Brazil, India) covered this debate during the UN climate summits in 2004, 2009, and 2014. Newspapers in both types of countries attributed more responsibility to developed than to developing countries. In line with social identity theory, however, media in developed countries attributed less causal responsibility (blame) to other developed countries than media in emerging economies. The latter countries’ media, in turn, attributed less responsibility to other developing countries than media in developed countries. At the same time, in line with the “differentiated responsibility”, media in developed countries attributed more responsibility to their own countries than media in emerging economies.     

海湾大桥施工隐患动态预测与双线控制研究

目前桥梁施工安全的研究,从宏观和微观两方面相结合的系统研究比较欠缺.根据大桥施工特点,从时间和空间角度,采取"线-点-面-点-面"分析方法,把桥梁建设的工艺过程看作线,具体的工艺看作点,各工艺的影响因素组成面,把每一影响因素看作点,各影响因素的影响指标组成面,以各工艺点为核心,对事故隐患进行全方位动态分析,结合计算机软...