救赎：寻求民族文化的出路——解读莫里森的《柏油孩子》

高速铁路具有高度集成、高精度的技术特点，运营过程中经受列车质量、速度、密度等多种因素影响，地理位置因素往往是影响铁路设备状态演变的决定性因素。采用网格化管理技术可将空间上连续分布的管理对象划分成较小的单元网格，有利于从空间位置角度研究管理对象状态的变化规律。随着信息系统技术、大数据技术的迅猛发展，基于位置而不是基于专业更符合高速铁路的管理需求，网格化管理技术给高速铁路管理带来了新的视角。     

Improving the detection of unusual observations in high‐dimensional settings

Multivariate control charts are used to monitor stochastic processes for changes and unusual observations. Hotelling's T² statistic is calculated for each new observation and an out‐of‐control signal is issued if it goes beyond the control limits. However, this classical approach becomes unreliable as the number of variables p approaches the number of observations n, and impossible when p exceeds n. In this paper, we devise an improvement to the monitoring procedure in high‐dimensional settings. We regularise the covariance matrix to estimate the baseline parameter and incorporate a leave‐one‐out re‐sampling approach to estimate the empirical distribution of future observations. An extensive simulation study demonstrates that the new method outperforms the classical Hotelling T² approach in power, and maintains appropriate false positive rates. We demonstrate the utility of the method using a set of quality control samples collected to monitor a gas chromatography–mass spectrometry apparatus over a period of 67 days.     

Improving Risk Management: From Lame Excuses to Principled Practice

The three classic pillars of risk analysis are risk assessment (how big is the risk and how sure can we be?), risk management (what shall we do about it?), and risk communication (what shall we say about it, to whom, when, and how?). We propose two complements as important parts of these three bases: risk attribution (who or what addressable conditions actually caused an accident or loss?) and learning from experience about risk reduction (what works, and how well?). Failures in complex systems usually evoke blame, often with insufficient attention to root causes of failure, including some aspects of the situation, design decisions, or social norms and culture. Focusing on blame, however, can inhibit effective learning, instead eliciting excuses to deflect attention and perceived culpability. Productive understanding of what went wrong, and how to do better, thus requires moving past recrimination and excuses. This article identifies common blame‐shifting “lame excuses” for poor risk management. These generally contribute little to effective improvements and may leave real risks and preventable causes unaddressed. We propose principles from risk and decision sciences and organizational design to improve results. These start with organizational leadership. More specifically, they include: deliberate testing and learning—especially from near‐misses and accident precursors; careful causal analysis of accidents; risk quantification; candid expression of uncertainties about costs and benefits of risk‐reduction options; optimization of tradeoffs between gathering additional information and immediate action; promotion of safety culture; and mindful allocation of people, responsibilities, and resources to reduce risks. We propose that these principles provide sound foundations for improving successful risk management.     

水平井分段多簇压裂缝间干扰研究

水平井分段多簇压裂在现场得到了广泛运用，其压裂过程中普遍存在缝间干扰现象。缝间干扰有助于形成复 杂裂缝网络以提高储层导流能力，但是也会导致起裂困难，甚至形成砂堵。因此有必要对分段多簇压裂的缝间干扰问 题进行研究。对此，基于弹性力学建立了分析多簇裂缝诱导应力的数学模型，从起裂压力、裂缝宽度、簇间距等多方面 研究了缝间干扰对水平井分段多簇压裂施工的影响。模拟结果显示，诱导应力会导致起裂压力升高、裂缝变窄，严重 时将造成压裂施工失败。通过进行分析，给出了起裂过程及延伸过程中缝间干扰的影响关系。分析认为，利用缝间干 扰提高改造体积时应当控制簇间距防止对压裂施工造成负面影响。研究结论对优化水平井分段多簇压裂设计具有指 导意义。     

DS18B20在油气井场温度监控系统中的应用

油气井场温度监控系统属于井场重要的安全保护装置,此系统用单片机+串行智能传感器来组成,广泛使用了串行芯片。介绍了系统硬件流程图,以及温度传感器芯片DS18B20的工作流程,详细说明了获取温度传感器序列号的ROM操作命令、存储器操作命令。     

Differential predictors of academic achievement: individual and familial factor interactions with community poverty

We present an analysis of the contexts within which adolescents graduate from high school and enroll in college. Data from the National Longitudinal Study of Adolescent Health show that adolescents’ school engagement, maternal academic monitoring, and community poverty significantly interact to explain differences in high school graduation and college enrollment rates (n?=?7100). To examine this association, we performed weighted logistic regression analyses, controlling for gender, race, block level unemployment, and block level median income. Findings suggest that protective factors can help youth overcome the challenges associated with community poverty and achieve academically in low and medium levels of poverty, but that youth in high-poverty contexts may need more resources to reach higher levels of academic attainment.     

从城市崇拜看阎连科的小说创作

阎连科出生在贫困的乡村,由于童年和少年时期的缺失性体验而产生一种向往城市的心理。这种心理在他的小说中体现为贫瘠土地上的青年农民拼命逃离土地、渴望进入城市的迫切心情。他的小说可以让人感受到主人公在逃离土地之路上挣扎的痛苦心声,同时也可体味到作者希冀精神上回归土地的殷切心情。     

Conceptualizing anxiety among social work students: implications for social work education

Student anxiety is frequently discussed within social work education. Due to its potentially devastating impacts, social work educators need to have a full understanding of anxiety in this context, in order to determine the best way to support students. Research on student anxiety from a broad body of literature provides implications for social work classrooms and field education. Key underlying concepts from previous social work and related research on student anxiety inform a conceptual model to help educators develop a more complex understanding of student anxiety. Implications for further research and important next steps in the development of support strategies for social work students are identified.     

深圳市海外高层次人才引进对三亚市的借鉴与启示

当今人才作为第一资源是各国家与地区之间争夺的对象，如何引进、使用和留住人才对国家和地区的经济发展具有重要意义。深圳市是全国改革开放的先锋军，在海外高层次人才引进方面走在全国前列。对深圳市海外高层次人才引进特色和优势分析，可为三亚市海外高层次人才的引进提供借鉴和启示意义，以促进三亚市发挥自身优势，吸引优势人才资源，为建设海南省国际旅游岛做出一份贡献。     

人类学视角中的荣昌陶艺——关于荣昌陶艺的田野调查

荣昌陶器技艺是中国传统陶器技艺的重要组织部分，因其历史悠久、工艺精湛而久负盛名，与江苏宜兴陶、云南建水陶、广西钦州陶并称为中国四大名陶，荣昌又与广东佛山、江苏宜兴一起被誉为中国“三大陶都”。在千百年的传承和发展过程中，荣昌陶器为巴蜀地区人民的生产和生活曾做出过重要贡献。在非物质文化遗产保护热兴起的今天，重新梳理荣昌陶器技艺产生和发展的场境，发掘潜藏在陶器技艺背后的经济和文化动因，能够使我们在文化生态和生产条件发生巨大变化的今天更好地保护、传承和发展荣昌陶艺。