The role of strengths in anger and conduct problems in maltreated adolescents

Despite multi-type maltreatment, some individuals demonstrate positive adaptation and continue to develop in a healthy way. A multitude of strength factors have been linked to adaptive functioning and resilience, but this has not been adequately examined in maltreated adolescent’s psychosocial functioning. This study sought to examine the role of strengths such as having talents/interests, family relationships, educational support, the role of the recognition and application of these strengths, and the role of multi-type maltreatment on anger control and conduct problems. One hundred and thirty participants (61 males; 69 females) aged 13–19 years old were rated using the Singapore version of Child and Adolescent Needs and Strengths (CANS) tool. The results revealed that certain strengths were associated with anger and conduct problems, but the recognition and application of strengths emerged as a consistently significant predictor for both outcomes. Hence, to understand and apply one’s strengths may be equally as important as merely possessing those strengths. This study extends current understanding of the importance of strengths with a group of maltreated adolescents in an Asian context. Adopting a person-centered and strength-based approach will further enhance the effectiveness of interventions and improve outcomes for maltreated adolescents living in residential care.     

Childhood adversity and the risk of substance use and delinquency: The role of protective adult relationships

Youth involved in the child welfare system experience multiple early adversities that can contribute to increased risk of substance use and delinquency. Although adverse childhood experiences (ACEs) have been associated with poorer behavioral outcomes among youth, less is known about the possible protective factors that may influence the relationship between early adversity and risk-taking behavior. This study examined whether protective adult relationships moderated the link between cumulative ACEs and substance use and delinquency after controlling for demographic characteristics in child welfare-involved youth. The sample included 1054 youth, ages 11–17, from the National Survey of Child and Adolescent Well-Being II who were in the first wave of data collection. Results showed that protective adult relationships moderated the relationship between ACEs and substance use, but not for delinquency. Specifically, under lower levels of protective adult relationships, cumulative ACEs related to increased substance use among youth. Implications for child welfare practices to target youths' support systems are discussed.     

大型精密仪器设备接地保护装置的设计与安装

着重阐述了大型精密仪器设备接地保护的重要性及有关接地的概念、接地类型、接地电阻的计算公式。以大型精密仪器设备D8-X射线衍射仪接地装置的设计与安装为例，介绍了接地电阻值的理论计算、接地体的设计、敷设与安装、接地电阻值的测量及接地装置的检查与维护方法。     

开采上保护层效果检验技术研究

煤与瓦斯突出严重影响了矿井安全生产,开采保护层是最有效、最经济的防治措施;通过对海孜矿上保护层开采效果研究,结果表明：开采前后瓦斯压力及含量降低明显,卸压区内瓦斯抽采率可达33.2%;卸压区内煤层透气性系数比未卸压区的增大三倍;相似模拟实验表明9煤的膨胀率为8.1‰,综合分析确定开采上保护层后对9煤起到了明显的卸压保护作用,研究结果为相似条件下保护层开采提供了参考。     

Child protection cases,one size fits all? Cluster analyses of risk and protective factors

BackgroundTo provide effective tailor made case management in Child Protection Services (CPS) a insight is needed into the specific characteristics of the target group. Using the ecological perspective of maltreatment, this study explored poorly known characteristics of the CPS population.ObjectiveTo distinguish CPS subgroups based on risk and protective factors enables tailor made case management that fits the specific needs of these subgroups.Participants and settingWe studied 250 Dutch CPS cases of family supervision by court order that had completed the LIRIK and Action Plan checklists in August 2014–March 2015.MethodsThis quantitative study analyzed risk and protective factors for children and parents reported in client files. Subgroups were identified by two-step cluster analyses. Chi-square analyses identified relations between parental risk subgroups and other groups.ResultsBuilding on the interplay between risk and protective factors on the levels of child, parent and environment, we found five distinct subgroups in the CPS population. The most vulnerable is parents with multiple problems (31%) or socio-economic problems (13%). Parts of both subgroup have limited protective factors. Parents with major life events (16%) or poor parenting (13%) are characterized by single-level problems. One subgroup (28%), the unaccepted, has no parental risk factors registered.ConclusionsStudying client files can lead to a better understanding of the healthcare needs of the CPS population. To develop and implement more effective case management requires constant dialogue between science, policy, and the experiences of both clients and professional.     

New cellulosic titanium dioxide nanocomposite as a protective coating for preserving paper-art-works

We investigate the TiO₂ role in the inherent protection of paper works of art to protect them against damaging effect of ultraviolet radiation, pollutant gasses, mold and bacteria. In this study a cellulosic nanocomposite of TiO₂ were used as protective coating on the surface of paper fibers. This layered nanocomposite can act as a consolidate materials too. Furthermore, to determine how well paper works screen objects from the damaging effects, two accelerated aging mechanisms due to light and heat are discussed. Results show good stability of papers with nanocomposite coating. Also, a good light stability was shown in the colored paper that treated with this nanocomposite. Furthermore, to demonstrate the degree of antifungal properties of coated papers, papers were treated with two common molds and the good preventive effect of coated paper against molds is described.     

配电网保护间隙动作过程的matlab仿真研究

以电力系统配电网保护间隙的防雷过电压保护动作为研究对象,通过阐述基本的保护间隙动作原理,讨论了雷电过电压发生时保护间隙存在的问题。利用matlab中的simulink程序搭建仿真电路,建立了配电网落雷后保护间隙动作仿真模型,并对仿真结果进行分析。     

220千伏变电站10千伏侧带负荷继电保护解决方案

本文以典型220千伏变电站为研究对象,对220千伏变电站10千伏侧带负荷运行时的继电保护配置方案进行了系统的研究,解决了220千伏变电站10千伏侧带负荷运行保护的选择性和速动性的重大问题,提出采用10千伏简易母线保护克服了传统完全差动保护的缺陷,解决了低压母线故障无速动保护的问题,有效地防止了由于10千伏系统故障波及220千伏电网,引起大面积停电等恶性电网事故,使220千伏变电站10千伏侧带负荷能够安全稳定运行。     

新网络环境下的计算机网络安全思考

随着计算机互联网技术的飞速发展,网络信息已经成为社会发展的重要组成部分,它涉及到政府、经济、文化、军事等诸多领域。由于新的网络环境下,计算机网络组成形式多样性、终端分布广和网络的开放性、互联性等特征,致使网络信息容易受到来自黑客窃取、计算机系统容易受恶意软件攻击,所以网络信息资源的安全与保密成为一个重要的话题。本文详细阐述常见的计算机网络安全中的威胁,进而提出几种常用的网络安全防范措施。     

Protective behavior in ride-sharing through the lens of protection motivation theory and usage situation theory

The frequent occurrence of security incidents in ride-sharing is a challenge for the survival of IT-enabled ride-sharing platforms. Passengers’ protective behavior is an effective means to alleviate this issue, with benefits to both the passengers and the platforms. This study explores the mechanisms of passengers’ protective behavior in the ride-sharing context by combining protection motivation theory (PMT) and usage situation theory. We test our hypotheses using data (n = 346) collected from a field survey based on a real scenario. The findings reveal that PMT and usage situation theory work well to explain passengers’ protective behavior during ride-sharing. This study explains the motivation behind passengers’ protective behavior in the ride-sharing context, extends the contents of PMT by exploring its antecedents, and extends the contents of usage situation theory by introducing a new dimension. Our findings can help ride-sharing platforms take appropriate strategies to improve passengers’ protective behavior.