Mother–infant Interaction Quality and Infants' Ability to Encode Actions as Goal‐directed

The current study investigated the relationship between mother–child interaction quality and infants' ability to interpret actions as goal‐directed at 7 months in a sample of 37 dyads. Interaction quality was assessed in a free play interaction using two distinct methods: one assessed the overall affective quality (emotional availability), and one focused on the mother's proclivity to treat her infant as an intentional agent (mind‐mindedness). Furthermore, infants' ability to interpret human actions as goal‐directed was assessed. Analyses revealed that only maternal emotional availability, and not maternal mind‐mindedness, was related to infants' goal‐encoding ability. This link remained stable even when controlling for child temperament, working memory, and maternal education. These findings provide first evidence that emotionally available caregiving promotes social‐cognitive development in preverbal infants.     

Physiological Daily Inhalation Rates for Health Risk Assessment in Overweight/Obese Children,Adults, and Elderly

Physiological daily inhalation rates reported in our previous study for normal‐weight subjects 2.6–96 years old were compared to inhalation data determined in free‐living overweight/obese individuals (n = 661) aged 5–96 years. Inhalation rates were also calculated in normal‐weight (n = 408), overweight (n = 225), and obese classes 1, 2, and 3 adults (n = 134) aged 20–96 years. These inhalation values were based on published indirect calorimetry measurements (n = 1,069) and disappearance rates of oral doses of water isotopes (i.e., ²H₂O and H₂¹⁸O) monitored by gas isotope ratio mass spectrometry usually in urine samples for an aggregate period of over 16,000 days. Ventilatory equivalents for overweight/obese subjects at rest and during their aggregate daytime activities (28.99 ± 6.03 L to 34.82 ± 8.22 L of air inhaled/L of oxygen consumed; mean ±  SD) were determined and used for calculations of inhalation rates. The interindividual variability factor calculated as the ratio of the highest 99th percentile to the lowest 1st percentile of daily inhalation rates is higher for absolute data expressed in m³/day (26.7) compared to those of data in m³/kg‐day (12.2) and m³/m²‐day (5.9). Higher absolute rates generally found in overweight/obese individuals compared to their normal‐weight counterparts suggest higher intakes of air pollutants (in μg/day) for the former compared to the latter during identical exposure concentrations and conditions. Highest absolute mean (24.57 m³/day) and 99th percentile (55.55 m³/day) values were found in obese class 2 adults. They inhale on average 8.21 m³ more air per day than normal‐weight adults.     

Bounding Analysis of Drinking Water Health Risks from a Spill of Hydraulic Fracturing Flowback Water

A bounding risk assessment is presented that evaluates possible human health risk from a hypothetical scenario involving a 10,000‐gallon release of flowback water from horizontal fracturing of Marcellus Shale. The water is assumed to be spilled on the ground, infiltrates into groundwater that is a source of drinking water, and an adult and child located downgradient drink the groundwater. Key uncertainties in estimating risk are given explicit quantitative treatment using Monte Carlo analysis. Chemicals that contribute significantly to estimated health risks are identified, as are key uncertainties and variables to which risk estimates are sensitive. The results show that hypothetical exposure via drinking water impacted by chemicals in Marcellus Shale flowback water, assumed to be spilled onto the ground surface, results in predicted bounds between 10⁻¹⁰ and 10⁻⁶ (for both adult and child receptors) for excess lifetime cancer risk. Cumulative hazard indices (HI_CUMULATIVE) resulting from these hypothetical exposures have predicted bounds (5th to 95th percentile) between 0.02 and 35 for assumed adult receptors and 0.1 and 146 for assumed child receptors. Predicted health risks are dominated by noncancer endpoints related to ingestion of barium and lithium in impacted groundwater. Hazard indices above unity are largely related to exposure to lithium. Salinity taste thresholds are likely to be exceeded before drinking water exposures result in adverse health effects. The findings provide focus for policy discussions concerning flowback water risk management. They also indicate ways to improve the ability to estimate health risks from drinking water impacted by a flowback water spill (i.e., reducing uncertainty).     

节点分析法在分层注采系统中的应用研究

针对二层油藏分层注采实际情况，在分析水平管流、垂直管流、配水嘴嘴流等沿程压降的基础上，基于节点分析原理，建立了二层油藏分层注采系统节点分析数学模型，考虑了层间、注采井间相互作用，大大提高了节点分析的可靠性；通过理论分析和实例计算，确定了分层配产配注量和注入压力，使注采系统处于平衡生产状态，并对多层油藏的节点分析具有一定借鉴意义和理论意义。     

Community Organizing and the Detroit Water Struggle: Report from the Front Lines

At this moment in history, both the need for macro social work approaches and interest in macro social practice among social workers are growing. One macro approach that is particularly well-suited to confronting current political and economic conditions is grassroots community organizing. Some authors have suggested that most successful efforts at community organizing are those which can link the lived experiences of grassroots community members to larger movements for social justice. The struggle for access to affordable water in Detroit is a prime example of such an effort. In 2014, indignation at the announcement that the city would be shutting off the water of all those who could not afford to pay their water bills, combined with resistance to the imposition of emergency management on the city, galvanized a movement that brought together a wide variety of community members, activists, and organizers. As a participant-observer in this struggle, I conducted videotaped interviews with 15 organizers and activists concerning their views on the successes and challenges they have witnessed and the crucial “next steps” for community activists in Detroit. This article reports on these interviews and examines the lessons for community organizers that emerged from them.     

‘An Earthquake Shocked Up the Land!’ Children's Communication During Play With Siblings and Friends

The construction of shared meanings strategies (e.g., introductions, extensions) and use of internal state language (e.g., references to mental states) during play were examined across two relationship contexts (siblings and friends) in 65 focal kindergarten‐aged children (M age = 56.4 months; SD = 5.71 months). Strategies to construct shared meanings were associated with play session; specifically focal children employed introductions more often with their siblings whereas positive/neutral responses and prosocial strategies were used more frequently with their friends. Findings regarding birth order position indicated that older focal children were more likely to engage in non‐maintenance (e.g., negative) behaviors and explanations with their siblings whereas younger focal children employed extensions of play ideas more often with their siblings than friends. Associations between shared meaning strategies and internal state language were positively correlated across both relationship contexts, with more significant associations found in the sibling play session. Findings highlight the high level of sophisticated play interaction among children during play; these interactions were rich and varied and are discussed in light of recent research and theory.     

基于关联耦合法的水体污染公共安全事件诱发耦合模式研究

多因素的复杂耦合作用是水体污染公共安全事件诱发过程中的强大动力，运用关联耦合法，从宏观的关联耦合向量和中观的关联耦合变量两个层次梳理了水体污染公共安全事件诱因结构，并在此基础上分析得出了诱发因素之间的五种耦合作用方式。研究最后以松花江水污染事件为例，剖析上述五种耦合方式的变迁作用如何逐步推动事件的演化和发展。     

从有关碑文资料看清代黔东南土地与水利管理

清水江流域各民族历来有重视土地与水利管理的传统。早在清代,这里的土地与水利管理就得到了较好的完善,促进了经济社会的发展。对之深入研究探讨,有一定的价值和意义。     

大豆黄浆水回收利用研究进展

大豆黄浆水是豆制品加工过程中所产生的废水,将其回收利用既减轻环境污染又能实现资源的循环利用。本文通过对大豆黄浆水的特点、回收利用途径研究现状进行了综述,分析了可能存在的问题,并预测其发展前景,以期为黄浆水的回收利用明确方向提供理论参考。     

Social Support and Well-Being in Contemporary Greek Society: Examination of Multiple Indicators at Different Levels of Analysis

An extensive and coherent body of social and psychological research has identified social ties and supportive relationships as important predictors of well-being and quality of life. This paper examines the relationships between structural and functional indicators of supportive relations and well-being in Greece at different levels of analysis based on results from three studies: (a) the European Social Survey (Study 1); (b) a cross sectional community study in Greece (Study 2); and (c) a social interactions study in Greece and the UK using an event sampling methodology (Study 3). Structural indicators of social support and life satisfaction and happiness in the first study were moderately associated. This finding was partly supported by results from the second study which revealed connections between some structural aspects of social support and well-being (happiness, anxiety, irritability) but not others. Functional aspects of social support and psychological indicators of well-being (happiness, anxiety, mental health) at the individual (Study 2) and social interaction (Study 3) levels were not associated. Cross-cultural comparisons of structural indicators of social support in Studies 1 and 3 revealed low frequency of social interactions. Also functional aspects of social support in everyday social interactions in Greece showed significantly lower levels in comparison to the UK. These findings suggest that structural and functional aspects of social support in Greece may not have the same palliative role as usually observed in the international literature and are discussed with particular attention to the level of analysis, the method, and the aspect of well-being being assessed.