Evidence for the Reliability and Validity of the Arabic Version of the Student Risk Screening Scale for Internalizing and Externalizing Behaviors (SRSS-IE)

School-based universal screening for behavioral/emotional risk is a necessary first step to providing services in an educational setting for students with emotional and behavioral disorders (EBDs). Psychometric properties are critical to making decisions about choosing a screening instrument. The purpose of the present study was to examine the psychometric properties of the student risk screening scale for internalizing and externalizing behaviors (SRSS-IE). Participants included 3145 students and their teachers. Item-level analyses of the current sample supported the retention of all items. The internal consistency of the SRSS items ranged from 0.83 to 0.85. Convergent validity between the SRSS-IE and a well-established screening tool, the strength and difficulties questionnaire (SDQ), was found for the total score (r = 0.70). Additionally, the results of this study demonstrate strong social validity, suggesting the SRSS-IE to be a useful and functional screening tool. We conclude that the SRSS-IE is a valid and reliable instrument for assessing the level of emotional and behavioral difficulties among elementary students.

Investigating the Effect of External Alliances on Innovation Behavior in the European Union Industrial Sector

The purpose of this study is to investigate the effects of collaboration with suppliers and lead users in new product development (NPD) on innovation behavior. Such collaborations are regarded as advanced forms of external alliances. Survey data from two hundred and fifty-two manufacturing companies were collected from the European Union. The results of multiple regression analysis showed that both suppliers’ and lead users’ collaboration in NPD significantly affected innovation behavior. Lead users’ collaboration showed higher impact on innovation behavior compared with suppliers’ collaboration.

A Study on the Influence of External Stimuli and Psychological Processes on Stationery Purchase Behavior Based on SOR

Based on the SOR(stimulus-organism-response)model to obtain 534 survey data from the MTurk platform,the relationship between external stimuli,psychological processes,and consumers’stationery purchasing behavior was empirically analyzed using a multivariate ordered logistic regression model.In terms of marketing stimuli,consumers’recognition of product quality and price as well as the convenience of purchasing channels significantly and positively influenced purchasing behavior;in terms of social stimuli,self’s opinion of needs and the positive evaluation of peers significantly and positively influenced purchasing behavior;in terms of psychological process,consumers’knowledge,trust,willingness to know,and preference for stationery products significantly and positively influenced purchasing behavior.Accordingly,it is proposed that,in order to promote the purchase of stationery products,the production and operation links should ensure the quality of stationery products,promote price control in a reasonable range,guarantee a healthy,orderly,and convenient stationery market environment,as well as strengthen the multi-sensory promotion of stationery products.

Differential Impact of an Executive-Function and a Social Cognition Training on Preschoolers with Externalizing Behavior Problems

In preschoolers, externalizing behavior problems are a primary cause of consultation. It is known that externalizing behavior (EB) could result from individual and environmental risk factors. Individual risk factors included notably social cognition (SC) and executive functions (EF). A high level of EB has usually been related to dysfunction in SC and to poor skills in EF. The aim of the present experimental study is to compare the impact of two very targeted child-oriented trainings in the increasing of social competence and decreasing of EB in preschoolers. One training targeted SC abilities while the second one targeted EF capacities. These two trainings were compared on 48 preschoolers presenting clinically relevant levels of EB. The comparison of those results highlighted how each training could help preschoolers with EB in their behavior, emotion regulation and social adjustment. In comparison to a waiting-list control-group, the two trainings were effective in decreasing EB and differentiated impacts of the two trainings were obtained on different dimensions of profiles of social competence and emotion regulation. Results are discussed for their research and clinical implications.

Establishment and validation of standardized animal models of spinal cord injury by normal external force-caused fracture dislocation

The duplication of animal models plays a key role in spinal cord injury research; however, there has been limited study into normal, external force-derived fracture dislocation. This study adopted experimental devices, designed in-house, to construct standardized ventral and dorsal spinal cord injury animal models of 6 g and 17 g falling from a height of 2, 4, and 10 cm, and 15, 30 or 50 g transversal compression on the spinal cord. The results showed that gradual increases in the degree of histopathological injury led to decreased Tarlov and Basso, Beattie and Bresnahan scores for the behavioral test, and increased Ashworth scores for the hind limb. Furthermore, there was a gradual decline in the slope test in the rats with dorsal spinal cord injury that correlated to increases in the falling substance weight or falling height. Similar alterations were observed in the ventral spinal cord injured rats, proportional to the increase in compression weight. Our experimental findings indicate that the standardized experimental rat models of dorsal and ventral spinal cord injury are stable, reliable and reproducible.

Long-time evolution of charged grains in plasma under harmonic external force and after being withdrawn

Evolution of the charged grains in a two-dimensional dusty plasma under a spatially harmonic external force,in particular,their long-time behaviors after the force has been withdrawn,is studied by using molecular dynamics simulation.Under an external force and a grain–grain interaction force,initially homogeneously distributed grains can reach a quasistationary state in the form of a disk crystal.After the external force is withdrawn,the disk moves initially with its size and shape nearly unchanged until it rapidly stops moving,and eventually the disk grain rotates like a vortex.The time needed to reach the final state increases with the strength of the initial external force increasing.

Effect of different processing parameters on interfacial heat-transfer behavior in high-pressure die-casting process

Vacuum die casting can reduce the'air entrapment'phenomenon during casting process.Based on the temperature measurements at metal-die interface with different processing parameters,such as slow shot speed(VL),high shot speed(VH),pouring temperature(Tp)and initial die temperature(Tm),inverse method was developed to determine the interfacial heat transfer coefficient(IHTC).The results indicate that a closer contact between the casting and die could be achieved when the vacuum system is used.It is found that the vacuum could strongly increase the values of IHTC and decrease the grain size in castings.The IHTC could have a higher peak value with increasing the Tp from680to720℃or the VL from0.1to0.4m/s.In addition,the influence of the VH and Tm on IHTC could be negligible.

Short-circuit fault analysis and isolation strategy for matrix converters

The behavior of matrix converter(MC) drive systems under the condition of MC short-circuit faults is comprehensively investigated. Two isolation strategies using semiconductors and high speed fuses(HSFs) for MC short-circuit faults are examined and their performances are compared. The behavior of MC drive systems during the fuse action time under different operating conditions is explored. The feasibility of fault-tolerant operation during the fuse action time is also studied. The basic selection laws for the HSFs and the requirements for the passive components of the MC drive system from the point view of short-circuit faults are also discussed. Simulation results are used to demonstrate the feasibility of the proposed isolation strategies.

Behavior characteristics and market operation problems of existing building energy-saving renovation market

The long-term and effective implementation of the existing building energy efficiency renovation depends on the development of the existing building energy efficiency renovation market.The key to the development of the existing building energy efficiency renovation market is the joint role of the market players.Starting with the analysis of the externalities and information asymmetry of the existing building energy efficiency renovation market,this paper analyzes the behavioral characteristics and influencing factors of the existing building energy efficiency renovation market entities(central government,local government,owners,energy conservation service enterprises,third-party evaluation institutions,and other market entities),and reveals the problems of the existing building energy efficiency renovation market,such as the absence of government,the lack of main power,and the lack of financing channels,Thus,it lays a platform foundation for the research on the behavior strategy and security system of the existing building energy-s aving renovation market.

团队对外领地行为如何影响团队知识共享:团队心理安全氛围与团队正念的作用

领地行为被引入组织行为研究领域后便受到广泛关注,探究团队对外领地行为对团队的积极作用具有重要意义。基于社会身份理论视角,构建一个被调节的中介模型,收集来自64个团队的329名员工数据,考察团队对外领地行为与团队知识共享的关系,分析团队心理安全氛围的中介作用以及团队正念的调节作用。研究发现:(1)团队对外领地行为正向影响团队知识共享,团队心理安全氛围在这一过程中起完全中介作用;(2)团队正念正向调节团队对外领地行为对团队心理安全氛围的作用,即当团队正念水平较低时,团队对外领地行为对团队心理安全氛围的影响作用以及团队心理安全氛围的中介作用均不显著;当团队正念水平较高时,会增强团队对外领地行为对心理安全的影响,且团队心理安全氛围的中介作用更显著。

控股股东私利行为、客户治理与企业绿色创新——基于中国上市公司的经验研究

以2012—2021年A股非金融上市公司为样本,理论分析与实证考察控股股东私利行为对企业绿色创新的影响以及关系客户对此的治理效应。研究结果表明,控股股东私利行为显著降低了企业绿色创新水平,而客户的治理能力能有效弱化控股股东私利行为对企业绿色创新的负面影响,揭示了客户治理效应的存在。基于影响机理的进一步分析发现,客户对控股股东私利行为的治理效应在低现金持有水平、过度投资企业中表现得更为显著。基于企业外部治理机制的进一步分析显示,在影响控股股东私利行为与企业绿色创新关系的过程中,客户治理与产品市场竞争治理、机构投资者持股治理之间存在显著的替代关系。对此,企业应建立健全内部治理与监督机制,加强客户资源管理。

新型配电系统分布式经济调度信息安全问题研究综述

随着大规模高比例的分布式电源接入电网运行,分布式经济调度系统因其优势显著受到更多的关注。但是,该系统特有的分布式通信构架、优化问题迭代求解过程和多利益主体参与模式为从系统内部和外部实施网络攻击提供了更宽广的时空条件,攻击模式和手段更加复杂多样,解决信息安全问题是提高分布式经济调度系统实用化程度的重要前提和基础。文中对分布式经济调度系统可能出现的信息安全问题及应对措施的研究现状进行了综述。首先,讨论了电力系统各种通信技术对分布式经济调度系统的适应性以及通信技术本身存在的安全风险;其次,介绍了外部网络攻击和内部恶意行为两类典型的信息安全问题,并进行了相关的特点分析和影响评估;然后,归纳和分析了两类信息安全问题的检测、预防、抑制措施和方法;最后,对信息安全问题模型的建立和综合安全防御体系构建进行了探讨。

负外部性如何塑造地方政府的政策行为?——以适老化改造中加装电梯政策为例

负外部性问题是基层社会治理的关键所在。基于全国114个城市的207份加装电梯政策文件,对地方政府应对负外部性的两种政策取向及其政策转换行为进行了动态识别,分析了两种政策取向所对应的负外部性治理方式及其内生的社会治理困境。研究表明:负外部性问题内嵌于地方政府的政策行为,表现为首次政策出台和后续政策修订中有关政策取向的差异化选择和跨期变动。具体地,68.42%的样本城市以“严格”的政策取向初次设定加装电梯政策,但随着政策取向的调整,最终选择“放松”的政策取向的城市占比达71.05%;50个样本城市的政策取向发生了由“严格”向“放松”的转变,其根源并非“自上而下”的层级任务压力,而是前期政策实践为地方政府认识负外部性所带来的潜在风险规模提供了有效信息,使其对潜在冲突风险的控制力得到增强。在推动解决老旧小区加装电梯难题的社会治理实践中,应对负外部性要依靠政策规制,但不能过度依赖政策规制,提升负外部性治理能力需要在风险预判、协同推进正负外部性活动以及靶向社区双重再造等方面重点发力。

体外预应力UHPC无腹筋梁抗剪性能试验研究

为研究体外预应力超高性能混凝土(Ultra-high Performance Concrete,UHPC)无腹筋梁的抗剪性能,设计了3片体外预应力UHPC无腹筋梁,剪跨比分别为1.44、2.56、3.67,采用四点加载的方式进行抗剪性能试验,获得了试验梁的荷载-位移关系、荷载-应变关系、破坏形态以及极限抗剪承载力。试验结果表明:体外预应力UHPC无腹筋梁的抗剪破坏方式均表现为脆性破坏,随着剪跨比的增大,试验梁破坏形态依次表现为斜压破坏、剪压破坏、剪拉破坏;剪跨比越大,斜裂缝的数量越少、倾角越小,试验梁的极限抗剪承载力越小,且减小趋势变缓。基于极限平衡法推导了体外预应力UHPC无腹筋梁的抗剪承载力计算公式,验算了14片无黏结预应力UHPC梁的抗剪承载力,该公式适用性良好。

社区矫正对象的越轨行为及其管控

对社区矫正对象越轨行为的管理和控制是对社区矫正对象“治未罪”或“治未然之罪”,贯穿社区矫正工作始。越轨行为主要有主观故意型、侥幸型、偶发型、人格异常型、邪教和传销型、疾病型等表现形式。因此,我国对社区矫正对象越轨行为的管控,必须树立以人为本的管控理念,充分认知越轨行为的目的性、情境性、差异性等特征,建立以法律法规和社区矫正规则为指向的、以“四社联动”为核心的一体化的外在管控机制,充分发挥社会支持和控制效能,构建社区矫正对象以自我谴责机制、自我调节机制和心理韧性为中心的内源性管控机制。

同伴拒绝与青少年外化问题行为的纵向关系:学校资源和性别的作用

采用同伴提名表、学校资源量表和儿童行为调查表教师报告版调查1169名初一学生(M七年级=12.59岁,SD=0.52),对其开展为期一年的追踪研究,探讨同伴拒绝与青少年一年后外化问题行为的关系,以及学校资源与性别在两者关系间的作用。结果发现:(1)在控制家庭居住地和前一时间点的外化问题行为后,同伴拒绝能够正向预测青少年一年后的外化问题行为;(2)学校资源和性别分别调节同伴拒绝与一年后外化问题行为的关系,具体而言,同伴拒绝正向预测低学校资源青少年一年后外化问题行为及同伴拒绝正向预测男生一年后外化问题行为;(3)学校资源对同伴拒绝与一年后外化问题行为间关系的调节作用因性别不同而有所差异,具体表现为,在高学校资源水平时,同伴拒绝不能预测男生一年后的外化问题行为。结果揭示了学校资源对遭受同伴拒绝男生的外化问题行为具有保护作用,提示为那些同伴处境不利男生提供一定的学校资源十分必要。

推拿不同部位对孤独症谱系障碍模型鼠行为学及肠道菌群的影响

目的探究不同部位的推拿对丙戊酸(VPA)诱导的孤独症谱系障碍(ASD)模型鼠行为学和肠道菌群的影响。方法将20只怀孕12.5天的Sprague Dawley(SD)雌性大鼠随机分为VPA模型组[腹腔注射VPA(600 mg/kg),n=15]和生理盐水组(腹腔注射等量生理盐水,n=5)。将注射生理盐水的子代雄鼠作为对照组,将注射VPA的子代雄鼠随机分为VPA组、背部组和腹部组(n=7)。在出生后第21天,通过三箱社交、旷场实验和埋珠实验观察四组大鼠的社交能力、焦虑行为和刻板行为,并开始对背部组和腹部组进行推拿,每天2次,持续14天。第35天,再次进行行为学检测,并取肠道内容物进行物种组成与结构分析、标志物种与差异物种分析。结果(1)行为学结果显示,与VPA组相比,背部组大鼠社交时间和旷场中心区运动时间显著增加(P<0.05),埋珠数量明显减少(P<0.01),说明其社交、焦虑和刻板行为得到改善;与VPA组相比,腹部组大鼠埋珠数量显著减少(P<0.05),刻板行为改善;埋珠实验中,背部组较腹部组埋珠数量更少,刻板行为改善更显著(P<0.05),而三箱社交和旷场实验两组结果无显著差异(P>0.05)。(2)肠道微生物检测结果显示,在多样性分析中,与VPA组相比,背部组和腹部组肠道菌群丰富度显著增加(P<0.05),多样性增加(背部组P<0.05,腹部组P<0.01);在差异性分析中,在门水平上,与VPA组相比,腹部组厚壁菌门相对丰度呈现较为明显的降低趋势(P<0.05);在属水平上,与VPA组相比,背部组和腹部组的乳杆菌属相对丰度较VPA组显著下降(P<0.05);标志物种分析中,与VPA组相比,背部组布劳特氏菌属显著增加(P<0.05)。结论推拿能对ASD模型大鼠行为学和肠道菌群结构产生影响;推拿背部对ASD模型鼠的社交能力、焦虑行为和刻板行为疗效显著,推拿腹部仅对刻板行为有明显效果;推拿背部与推拿腹部均使ASD模型鼠肠道菌群丰富度和多样性增加,其中推拿腹部对肠道微生物多样性的改善更显著,并使物种分布更均匀。

中青年血液透析患者工作退缩行为现状及影响因素分析

目的 探讨中青年血液透析患者工作退缩行为现状,并分析其影响因素。方法 于2022年2月-2023年2月,抽取潍坊市3家综合性医院首次接受血液透析且已回归工作的中青年血液透析患者213例作为研究对象,使用一般资料调查表、工作退缩行为量表、家庭支持自评量表、社会支持评定量表、心理弹性量表、透析患者症状负担量表对其进行问卷调查。结果 中青年血液透析患者工作退缩行为得分为(30.09±6.26)分。多元线性回归结果显示,透析前病程持续时间、家庭支持、社会支持、心理弹性、症状负担为中青年血液透析患者工作退缩行为的独立影响因素(R2=0.548,_△R2=0.535,F=50.193,P<0.001)。结论 中青年血液透析患者存在中等程度的工作退缩行为,应从内部、外部因素出发,针对性指导患者更好地融入社会、重返工作。

新型外包钢板-自攻螺钉连接胶合竹梁柱节点转动性能

针对胶合竹材不易预开槽和预开孔以及节点转动时竹材易发生横纹劈裂的问题,研究了新型外包钢板-自攻螺钉连接节点的转动性能。对T形外包钢板-自攻螺钉连接节点和双L形外包钢板-自攻螺钉连接节点共5个试件进行了单调加载试验,分析了节点的破坏模式、初始刚度、极限承载力、变形能力和延性系数。试验发现,T形外包钢板-自攻螺钉连接节点相较双L形外包钢板-自攻螺钉连接节点,各项受力性能参数均较优。布置直径小但数量多的自攻螺钉时,节点(T8×8-M)的破坏表现为钢板和自攻螺钉的受拉断裂以及与胶合竹柱连接的自攻螺钉受拉断裂,布置直径较大但数量少的自攻螺钉时,节点(T6×10-M)的破坏则表现为竹材的横纹劈裂和自攻螺钉的剪切破坏。横纹方向采用自攻螺丝加强,可改善节点的受力性能,对T形外包钢板-自攻螺钉连接节点改善更明显。现行《工程竹结构设计标准》(T/CECS 1101—2022)提供的节点设计方法偏于安全地预测胶合竹自攻螺钉连接梁柱节点的抗弯承载力。

Shear behavior of ultra-high-performance concrete beams prestressed with external carbon fiber-reinforced polymer tendons

The ultra-high-performance concrete(UHPC)and fiber-reinforced polymer(FRP)are well-accepted high-performance materials in the field of civil engineering.The combination of these advanced materials could contribute to improvement of structural performance and corrosion resistance.Unfortunately,only limited studies are available for shear behavior of UHPC beams reinforced with FRP bars,and few suggestions exist for prediction methods for shear capacity.This paper presents an experimental investigation on the shear behavior of UHPC beams reinforced with glass FRP(GFRP)and prestressed with external carbon FRP(CFRP)tendons.The failure mode of all specimens with various shear span to depth ratios from 1.7 to 4.5 was diagonal tension failure.The shear span to depth ratio had a significant influence on the shear capacity,and the effective prestressing stress affected the crack propagation.The experimental results were then applied to evaluate the equations given in different codes/recommendations for FRPreinforced concrete structures or UHPC structures.The comparison results indicate that NF P 18-710 and JSCE CES82 could appropriately estimate shear capacity of the slender specimens with a shear span to depth ratio of 4.5.Further,a new shear design equation was proposed to take into account the effect of the shear span to depth ratio and the steel fiber content on shear capacity.