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。     

Starting the data conversation: informing data services at an academic health sciences library

Objective

The research obtained information to plan data-related products and services.

Methods

Biomedical researchers in an academic medical center were selected using purposive sampling and interviewed using open-ended questions based on a literature review. Interviews were conducted until saturation was achieved.

Results

Interview responses informed library planners about researchers’ key data issues.

Conclusions

This approach proved valuable for planning data management products and services and raising library visibility among clients in the research data realm.     

An Optometry Librarian’s Vision: Improved Student Scholarly Communication

Health profession students benefit academically, clinically, and professionally when they acquire the writing skills necessary for scholarly communication. The purpose of this article is to discuss how a solo, embedded health science librarian spearheaded collaborative efforts and contributed to the creation of a scaffolded writing program within the existing optometry curriculum. The article includes a discussion of the opportunities, challenges, and outcomes of this writing endeavor.     

Differential responsiveness to a parenting intervention for mothers in substance abuse treatment

This study examines the relationship between levels of psychological distress in substance-dependent mothers and their differential response to a dyadic parent–child intervention. A sample of 66 mothers who were receiving treatment for substance abuse, as well as a simultaneous parenting intervention, were interviewed pre and post-treatment on measures of psychological distress, adult and child trauma history, parental reflective functioning, and child social–emotional development. Additionally, clinicians provided assessments of the parent–child relationships. As anticipated, trauma histories for mothers and children, children's social emotional development, and parental reflective functioning were associated with aspects of maternal psychological distress. Kruskal–Wallis and subsequent Wilcoxson signed rank tests revealed that women with highest levels of baseline psychological distress showed significant improvements in psychological functioning post-treatment while women with moderately elevated levels of psychological distress did not. Women who were most distressed at baseline showed increased levels of parental reflective functioning post-treatment while women with moderate and lower levels of baseline psychological distress showed improvements on clinician-rated assessments of parent–child relationships. Chi Square analyses showed that parents who endorsed the highest levels of distress at baseline reported that their children's risk status regarding social–emotional development decreased post-treatment. Despite similarities in substance dependence, mothers in this sample had different needs and outcomes in the context of this parenting intervention due to variation in mental health. Given this variation, parenting interventions for substance-dependent mothers need to account for the individual differences in levels of psychological distress.     

人生盛宴中的乔伊斯--对《憾事一桩》中达菲先生的原型分析

爱尔兰文学巨匠乔伊斯的《都柏林人》是对爱尔兰昏昏噩噩的群体精神文化现状的真实写照。乔伊斯在无意识的创作过程中深入地剖析了爱尔兰国民文化的劣根性,同时也对自己的精神和心理进行了解构与分析。《憾事一桩》中的主人公达菲先生就是乔伊斯无意识的化身,是乔伊斯力求拯救的业已陷入精神沦陷危机边缘的那部分自我。文章从分析心理学角度分析达菲先生的精神并建构达菲先生的心理原型,力求呈现乔伊斯在无意识的创作过程中的动态的心理图景。     

领导者自我认知测评系统开发

领导者需要努力了解自身性格问题,通过获得更深刻的自我认知,避免性格缺陷,提高领导能力。设计开发了领导者自我认知测评系统,利用ASP和SQL Server数据库技术将系统建立在Web上,系统功能较强,具有适应性、简单性、易用性、高效可管理性、可扩展性等特点。     

心理账户、享乐编辑与灌溉水价——来自四川省灌区农民的调查分析

分析农民对灌溉水价的内隐心理决策机理是理解农民的水费支付行为,以及解决灌溉水价现存问题的关键切入点之一。本文首次以行为经济学中关于主体经济决策的心理账户(MA)与享乐编辑(HE)理论对农民灌溉水价的心理决策机理做了理论分析,提出了两个研究假说,并以四川省的调查数据进行了验证与讨论。结果表明:灌溉水价的问题可通过提高水价和增加收入这两个方案的综合配套来解决。由于农民受MA影响,增加收入方案可将现行的暗中补贴改为明补,并设置成为国家专立的直接补贴农民的灌溉水价补贴项目;由于农民受HE规则影响,对两方案间分离实施的时间跨度与先后顺序、相对大小关系、实施频率与方式以及适用区域等都有特定要求,并且两方案在实施时的时间维度和空间维度上需以反享乐编辑规则对农民进行反向激励,本文均对其做了讨论与分析,最后还指出了进一步研究与创新的方向。     

农村中学体育术科生训练中的几种现象与对策——以江门新会陈瑞祺中学为例

农村中学体育术科考生在平时的运动训练中,有几种现象直接或间接地影响到了考生的考试成绩,农村体育考生选择了体育作为自己的通往大学之路,带训体育教师,文章对农村体育术科考生训练中的几种现象加以分析,找出对策,总结一些有效的训练经验,为考生取得良好的成绩提供帮助。     

Understanding information diffusion with psychological field dynamic

Several approaches focus on how to automatically capture the latent features from original diffusion data and predict the future scale of cascades utilizing a black box framework. However, they ignore the penetrating insight into the underlying mechanism that how each participant is involved in the cascade. In this work, we bridge the gap between prediction and understanding of information diffusion by incorporating deep learning techniques and social psychology. To characterize individual participation driven by both subjective and objective impetus and integrate it into the macro-level cascade, we propose an end-to-end model, named PFDID, which is designed based on the field dynamics theory of psychology, including the intrinsic cognition field and the extrinsic environment field. We represent these two field dynamics respectively with the pairwise semantic relation between the message itself and corresponding comment and the forwarder’s micro-community activity embedding to provide educated explanations for forwarding behaviour. Afterwards, the cross infusion mechanism is designed to calculate the mutual influence of inhomogeneous field dynamics inside users and cross influence of homogeneous field dynamics among individuals, whose output is fed into the diffusion network aggregation layer for the cascade size prediction. Extensive experiments on two typical social networks, Sina Weibo and Twitter, manifest that the proposed PFDID outperforms state-of-the-art approaches. Our model achieves excellent prediction results, with MSLE = 1.856 on Sina Weibo and MSLE = 1.962 on Twitter, providing 6.54% and 10.53% relative performance gains, respectively. Furthermore, the interpretability is also discussed based on detailed visualization. We observe that the psychological impetus behind social behaviour varies mainly following two patterns with the spread of information, including gradual change and joint influence. Additionally, the indirect dependencies have also been verified.     

体育消费对提高大学生身体活动量的促进作用研究

大学生"体质低下"已严重阻碍了个体和社会的健康发展,寻求改善这一现象的有效手段和方法已成为亟待解决的主要社会问题。研究采用文献资料法、问卷调查法、数理统计法,对5724名在校大学生体育消费情况和身体活动量进行了调查与分析,结果显示:大学生体育消费结构的不同与身体活动量的提高有显著关联;而体育消费水平的提升也同样显示出身体活动量有效增加的趋势。可见,积极的体育消费对大学生身体活动量的提高有显著的成效,是改善大学生体质健康水平的物质基础和精神保障。