NUMERICAL METHOD OF MIXED FINITE VOLUME-MODIFIED UPWIND FRACTIONAL STEP DIFFERENCE FOR THREE-DIMENSIONAL SEMICONDUCTOR DEVICE TRANSIENT BEHAVIOR PROBLEMS

Transient behavior of three-dimensional semiconductor device with heat conduc- tion is described by a coupled mathematical system of four quasi-linear partial differential equations with initial-boundary value conditions. The electric potential is defined by an ellip- tic equation and it appears in the following three equations via the electric field intensity. The electron concentration and the hole concentration are determined by convection-dominated diffusion equations and the temperature is interpreted by a heat conduction equation. A mixed finite volume element approximation, keeping physical conservation law, is used to get numerical values of the electric potential and the accuracy is improved one order. Two con- centrations and the heat conduction are computed by a fractional step method combined with second-order upwind differences. This method can overcome numerical oscillation, dispersion and decreases computational complexity. Then a three-dimensional problem is solved by computing three successive one-dimensional problems where the method of speedup is used and the computational work is greatly shortened. An optimal second-order error estimate in L2 norm is derived by using prior estimate theory and other special techniques of partial differential equations. This type of mass-conservative parallel method is important and is most valuable in numerical analysis and application of semiconductor device.

Screen Exposure and Behavior Problems among Preschoolers:A Meta-Analysis

Conflicting results have existed in research on the relationship between screen exposure and behavior problems among preschoolers,so it is necessary to clarify the relationship and provide guidelines regulating their screen usage.Through searching and screening of literature,48 independent samples from 43 quantitative studies are included in the meta-analysis,with 76,049 participants.The results show a weak positive correlation between screen exposure and behavior problems among preschoolers(r=0.169).The findings show that preschoolers’age and length of exposure have a significantly moderate effect on the relationship between screen exposure and behavior problems among preschoolers,while media types and study design do not.Additionally,a stronger correlation is observed between excessive screen exposure and behavior problems among preschoolers aged 0-3.Recommendations for the appropriate use of digital media among preschoolers and media education are also presented.

Prevalence of emotional and behavioral problems among schoolchildren in Herat City,Afghanistan

Background:The prevalence of pediatric mental illnesses has been increasing in recent years,with a great potential to impact on individual's functionality and adaptation in adulthood.Objective:This study aims to assess emotional and behavioral problems among schoolchildren in Herat City of Afghanistan.Methods:This cross-sectional study was conducted on schoolchildren(grade 5-10),between September and November 2021.Sociodemographic data was collected using a paper-based 14-item structured questionnaire.Data on emotional and behavioral problems was collected using the Strengths and Difficulties Questionnaire(SDQ)based on teachers'and children's report.Statistical analyses were performed in IBM SPSS Statistics(version 27).Results:A total of 418 students,including 190(45.5%)males and 228(54.5%)females with a mean age of 14.1±1.7(11-<18)years were included in the study.The prevalence of students*self-reported total difficulties and prosocial problem were 5.7%and 1.2%,respectively.An insignificant difference was observed between mean total difficulties scores between students'self-reported and teachers'reported SDQ.Gender,grade,concern about shortage of food,and concern about losing house were significantly predicting students'self-reported total difficulties scores.Conclusion:This is the first study to report the prevalence of emotional and behavioral problems among schoolchildren in Herat City,Afghanistan.This,together with relevant global literature,highlight the need to address pediatric mental health,and provide services aimed at preventing,and treating children with these prob­lems around the world.

Relationship between Parent-Child Attachment and Problem Behaviors among Chinese Firstborn Children in Family Transitions: A Meta-Analysis

The implementation of China’s three-child fertility policy has led to a notable increase in multiple-child families.Notably,firstborn children experience a significant transition from being an only child to a non-only child.This transition is associated with problematic behaviors,affecting their social adjustment,sibling relationships,and family harmony.Although several studies have examined the relationship between parent-child attachment and problem behaviors exhibited byfirstborn children during family transitions,thefindings have been inconsistent.Hence,a meta-analytic study was undertaken to elucidate the inconsistencies in this relationship and explore the moderating factors that may contribute to these discrepancies.Using a systematic literature retrieval and screening method,12 effect sizes were derived from the 10 eligible articles,encompassing a sample size of 5319.The meta-analysis demonstrated a low negative association between parent-child secure attachment and problem behaviors exhibited byfirstborn children during family transitions.Furthermore,the present study investigates potential moderator factors,such as children’s age and geographic region,to gain a more nuanced understanding of the relationship.Consequently,the establishment of parent-child attachment relationships has the potential to mitigate problem behaviors observed infirst-born children during family transitions.The implications of thesefindings indicate that parents can nurture secure attachment bonds with their children by demonstrating sensitive responsiveness,employing positive parenting practices,and fostering emotional availability.These efforts contribute to the cultivation of secure internal working models and positive behavioral manifestations withinfirst-born children,which in turn affect their relationships with siblings.

Research on the Therapeutic Effect of Sandplay Intervention on Emotional and Behavioral Problems of a Primary School Student

With the aim to explore the therapeutic effect of sandplay therapy on children with emotional and behavioral problems,in this study,a primary school student with emotional and behavioral problems was selected as the research object undergoing 12 times sandplay intervention,combining the methods of observation,interview,and questionnaire.It turns out that:(1)The traumatic theme indicates an overall downward trend in the process of intervention,while the cure theme indicates an overall upward trend.(2)The results of“strengths and difficulties questionnaire”were found to be consistent with the results of descriptive evaluation before and after sandplay intervention.(3)Based on the interview,sandplay,and questionnaire analysis,it is found that sandplay therapy shows a better therapeutic effect on children with emotional and behavioral problems.

Impact of parenting styles on preschoolers’behaviors

In this editorial,I comment on the article“Association of preschool children behavior and emotional problems with the parenting behavior of both parents”which was published in the latest issue of“World Journal of Clinical Cases”that demonstrates the prevalence of behavioral disorders in preschool children.Therefore I am focused on parenting which is the most effective factor shown to affect the development and continuity of these behaviors.The management of child behavior problems is crucial.Children in early ages,especially preschoolers who are in the first 5 years of life,are influenced by dramatic changes in various aspects of development,such as social,emotional,and physical.Also,children experience many changes linked to different developmental tasks,such as discovering themselves,getting new friendships,and adapting to a new environment.In this period,parents have a critical role in supporting child development.If parents do not manage and overcome their child’s misbehavior,it could be transformed into psychosocial problems in adulthood.Parenting is the most powerful predictor in the social development of preschool children.Several studies have shown that to reduce the child’s emotional and behavioral problems,a warm relationship between parents and children is needed.In addition,recent studies have demonstrated significant relationships between family regulation factors and parenting,as well as with child behaviors.

Psycho-cognitive behavioral problems in sleep disordered children

Sleep disturbances are common in childhood and adolescence. Sleep problems in early infants tend to be persistent and prominent in preschool and school-aged children. Chronic sleep disorders, especially in young children may lead to neurobehavioral problems and psycho-cognitive impairment. Sleep difficulties may be the result of underlying medical conditions, （breathing disorders） or psychological problems. Research studies have shown the association between sleep disorders and day time cognitive impairment, behavioral problems, poor school performance and inattention in children. Appropriate diagnosis and early management of sleep disorders in children lead to improvement of neurocognitive function and behavioral problems in these children.

ASYMPTOTIC BEHAVIOR FOR A CLASS OF ELLIPTICEQUIVALUED SURFACE BOUNDARY VALUE PROBLEM WITH DISCONTINUOUS INTERFACE CONDITIONS

Spontaneous potential well-logging is one of the important techniques in petroleum exploitation. A spontaneous potential satisfies an elliptic equivalued surface boundary value problem with discontinuous interface conditions. In practice, the measuring electrode is so small that we can simplify the corresponding equivalued surface to a point. In this paper, we give a positive answer to this approximation process:when the equivalued surface shrinks to a point, the solution of the original equivalued surface boundary value problem converges to the solution of the corresponding limit boundary value problem.

STUDY ON INTELLIGENT DEVELOPMENT AND BEHAVIORAL PROBLEMS OF IRON－DEFICIENT SCHOOL CHILDREN

we studied a sample or 433 school children aged 6～14 years with double-blind, placebocontrol.Children Behavior Checklist (CBCL),Conner's questionnaire in all sample and WISC-CR intelligent test in part of it were performed.The study aimed to explore the behavioral and intelligent effects or iron deficiency on school children. The results showed:in the children with poor intellgent quotien (IQ) tested by WISC-CR serum ferritin level was significantly lower than that in the children with normal to (P<0. 01);with analysis or stepwise multiple regression for behavioral problem of children, serum ferritin (SF),free erythroyte protoporphyrin (FEP) and hemoglobin (HB) were taken into the equation suggesting that iron-dericient biochemical index had significant effect on behavioral problem or school children. With factor analysis of Conner's questionnaire, different factor structure between the iron-deficient and normal group was revealed. Therefore,irondeficient group had higher learning problem than normal group.After treatment using iron dextran the differences in the learning problem between the two groups disappeared.

CHILD'S BEHAVIOR PROBLEMS COMPUTER SCREENING SYSTEM AND IT'S APPLICATION

To programming one Child's Behavior Problems Computer Screening System (CBPCSS), a series of software for analyzing child behavior individual and group sample. According to the worldfamous American ACHENBACH child's behavior checklist, to ensure the screening quality and compatibility of cultures, we revised and standardized the norms of different ages in primary schools and nursery schools in various cities based on the principle of cluster stratified sampling. Then we designed CBPCSS carefully. The system can reliably and rapidly screen an individual child behavior and output the behavior factor curve (appearing in front of the profile). With CBPCSS we can observe the child behavior clearly. It takes twenty times shorter than that of manual screening. On the other hand, CBPCSS has a function of group analysis. The clinical practice proved that CBPCSS could substitute for manual screening completely. It is a powerful tool for social, scientific and pediatric medical workers.

Emotional and Behavioral Problems of Left-Behind Children in Impoverished Rural China:A Comparative Cross-Sectional Study of First Grade Junior High School

Objective:To investigate the prevalence of emotional and behavioral problems and related factors of left-behind children in impoverished rural China(mainly in thefirst grade of junior high school).Methods:A cross-sectional survey of rural households in 27 poverty-stricken counties in 12 provinces across China was conducted using the Strengths and Difficulties Questionnaire(SDQ).Results:The prevalence of emotional and behavioral problems in left-behind children was 11.7%,and that of non-left-behind children was 8.9%.There was statistical difference between the two groups(P<0.01).There are no differences between the two groups in terms of the various factors of SDQ.The incidence of insomnia in the left-behind group was 58.3%,which was higher than that in the non-left-behind group 50.9%(P<0.01);loneliness(62.1%vs.51.8%,P<0.01);running away from home(23.1%vs.18.8%,P<0.01),and self-injury behavior(16.8%vs.12.2%,P<0.01).Left-behind children are more likely to have negative psychological feelings including insomnia,loneliness,self-injury,and run away from home.They also experienced more bullying including maliciously teased by peers,intentionally excluded or isolated,physically threatened or intimidated.All of these factors are associated with their abnormal emotional and behavioural development.Conclusion:The incidence of emotional and behavioral problems of left-behind children in rural areas in poverty-stricken areas is significantly higher than that of non-left-behind children;Logistic regression analysis showed that bullying behavior and abnormal psychological characteristics are significantly associated with left-behind adolescents abnormal emotional and behavioral development.

The Relationship between Problem Behavior and Neurotransmitter Deficiency in Adolescents

This study examined the association of problem behavior with neurotransmitter deficiency in adolescents,which would provide new insights into behavioral problems.A total of 1259 students of the seventh grade from 4 middle schools in Wuhan city located in the central China were recruited.With the approval of school and parents,they were invited to complete the Youth Self-Report (YSR) questionnaire and Symptom Scale of Neurotransmitter Deficiency (SSND) questionnaire.Pearson’s bivariate correlation analysis showed that the correlation coefficients between each subscale of YSR and SSND ranged from 0.24 to 0.61 with all P【0.01.Canonical correlation analysis indicated that anxiety/depression was interrelated with insufficiency of GABA and 5-HT;aggressive behavior was associated with inadequate GABA;famine of DA influenced the attention problems.It was concluded that neurotransmitter deficiency may cause a series of behavioral and mental problems.

Social Skills and Behavioral Problems in Adolescents with Child Sexual Abuse, and Their Relation to Basal Cortisol

Child sexual abuse (CSA) is a stressful associated with alterations in the hypothalamic-hypophyseal-adrenal (HPA) axis and behavioral problems. Children and adolescents with history of CSA could have higher cortisol levels, as these have been associated with deleterious changes in brain regions involved in controlling social behavior and self-control. The aim of the present study was to determine the relationship among basal cortisol levels, social skills and behavioral problems in adolescents with CSA by evaluating two groups: one consisting of 12 - 15-year-old girls with CSA (n = 23), the other healthy comparison adolescents with no history of child abuse (n = 23). Social skills and behavioral problems were assessed using the Social Skills Improvement System. Three saliva samples were collected from each participant. The girls with CSA had lower social skills and more behavioral problems, as well as, higher cortisol concentrations. Besides, these participants showed significant negative correlations among cortisol levels and social skills, as well as, positive correlations with behavioral problems scales. It is feasible to suggest that the social deficiencies observed in these participants with CSA are related to alterations of the HPA.

Problem Drinking Behaviors: Differential Effects of Stress and School Type on College Students

Given that alcohol use is highly prevalent at US colleges, we explored factors related to problem drinking behaviors (PDB;binge drinking, driving after drinking, sexual intercourse after drinking) among 4098 Black and White students from two- and four-year colleges who completed an online survey. We found an interaction between race and sex such that, among Whites, females had less PDB than males (B = 0.09, CI: 0.05;0.40, p = 0.01). An interaction between race and school type also existed, such that White students from four-year schools had greater PDB (B = 0.11, CI: 0.20;0.54, p < 0.001). An interaction between race and stress suggested that Black students were more negatively affected by stress in terms of PBD (B = 0.12, CI: 0.01;0.07, p = 0.01).

屏幕暴露与学龄前孤独症谱系障碍儿童情绪行为问题相关性研究

背景既往已有多项研究证实屏幕暴露现象在学龄前儿童中普遍存在,并且与儿童情绪行为问题相关,现有研究多集中在正常学龄前儿童,有关屏幕暴露与学龄前孤独症谱系障碍(ASD)儿童情绪行为问题相关的研究较为罕见。目的 调查学龄前ASD儿童屏幕暴露情况及情绪行为问题异常检出情况,探究屏幕暴露与学龄前ASD儿童情绪行为问题有无相关。方法 选择2022年2—8月在郑州大学第三附属医院儿童发育行为科就诊的符合《精神障碍诊断和统计手册》(DSM-V)孤独症诊断标准的ASD学龄前儿童为ASD组,同期选取郑州市某幼儿园正常发育儿童为对照组。由两组儿童主要照护人进行填写屏幕暴露问卷及长处与困难问卷(家长版)。结果 两组儿童屏幕接触时间、家长对屏幕管理、“屏幕剥夺”反应比较,差异无统计学意义(P<0.001);ASD组儿童亲社会行为、困难总分及各个分维度(情绪症状、品行问题、多动/注意缺陷问题、同伴交往问题)异常检出率均高于对照组(P<0.001);Logistic回归分析发现电子设备放置在睡觉或玩耍空间、观看时照护人是否互动讲解、照护人对孩子观看电子屏幕态度、接触电子屏幕是主动要求还是被动参与、强制关掉电子屏幕孩子反应是学龄前ASD儿童情绪行为问题的影响因素(P<0.05)。结论 屏幕暴露可能对ASD儿童情绪行为问题产生影响,家长应合理管理学龄前ASD儿童屏幕使用。

童年创伤、亲子依恋对青少年问题行为的影响研究

为了探明童年创伤、亲子依恋对青少年问题行为的作用,采用儿童创伤问卷、依恋方式问卷和长处困难问卷对300名青少年进行调研。结果显示:童年创伤与安全型依恋显著负相关,与不安全型依恋显著正相关,与问题行为之间显著正相关;问题行为与安全型依恋之间显著负相关,与不安全型依恋之间显著正相关。结论:童年创伤可能破坏亲子依恋关系,进而导致青少年问题行为的发生。家长应该为子女创设良好的成长环境,良好的童年经历、高质量的亲子依恋关系意味着更少的问题行为。

消极情绪对学前儿童问题行为的影响:父母严厉管教的中介作用

本研究以358名学步儿为被试,探讨儿童早期不同消极情绪表现是否会通过父母严厉管教影响学前期的问题行为。结果显示:(1)母亲严厉管教在受限后沮丧和学前儿童外化问题行为之间起部分中介作用,即受限后沮丧不仅直接正向预测外化问题行为,还会通过母亲严厉管教影响外化问题行为。(2)恐惧对学前儿童内化问题行为的直接作用显著,但父母严厉管教在其中的中介作用不显著。研究结果揭示了早期受限后沮丧和恐惧对学前期问题行为的作用机制存在差异。

听处理与学龄前儿童问题行为的关系:执行功能的中介作用

目的探讨学龄前儿童听处理与问题行为的关系,并探究执行功能在其中的中介作用。方法于2021年6—8月抽取南京2342名7所幼儿园学龄前儿童,用《学龄前儿童听处理评估量表》《Conners父母问卷》《学龄前儿童执行功能行为评定问卷》对学龄前儿童进行评估,分析不同人口学特征儿童听处理、问题行为、执行功能的得分以及异常检出率的差异,同时采用多元线性回归分析影响儿童听处理总分、问题行为总分、执行功能总分的影响因素,并探究执行功能是否是听处理和执行功能的中介因素。结果性别、年级是听处理总分的影响因素(P<0.05);性别、年级、父母受教育程度及家庭经济状况是问题行为总分、执行功能总分的影响因素(P<0.05)。听处理总分(rs=0.458,P<0.05)、问题行为总分(rs=0.185,P<0.05)与执行功能总分呈显著正相关,听处理总分与问题行为总分呈显著正相关(rs=0.423,P<0.05)。执行功能在听处理与问题行为间起部分中介作用,中介效应占总效应的33.44%。结论学龄前儿童听处理可能直接影响其问题行为,也可能通过间接影响执行功能影响问题行为。

行为运营管理研究综述

经理人的决策质量对于实现高效运营管理至关重要。然而,在商业实践中,经理人的决策过程常常伴随着非理性行为,并最终导致决策偏差。决策偏差是企业无法实现高效管理的根本问题,其成因广泛、机理深邃,治理困难,因此面临着重大的研究挑战。近年来,学术界针对运营管理中的各种场景,尤其是库存和供应链管理,进行了一系列研究。这些研究广泛识别了不同类型的决策偏差,并反复检验了这些偏差的稳健性,探索了决策偏差的形成机制和干预治理方法。然而,现有的研究视角广泛,方向零散,缺乏对决策偏差的系统性认知和梳理。因此,本文系统性地讨论库存与供应链管理中的决策者行为偏差问题,分析其科学内涵和形成机理,并对一些重要进展进行梳理和凝练。同时,对其研究与实践的未来方向进行了展望,为学术研究和业界应用提供关于决策偏差的深入洞察,以期实现“知偏识正”。