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.

Relationship between parenting stress and behavioral and emotional problems in preschool children: A mediation effect analysis

BACKGROUND Emotional reactions,such as anxiety,irritability,and aggressive behavior,have attracted clinical attention as behavioral and emotional problems in preschool-age children.AIM To investigate the current status of family rearing,parental stress,and behavioral and emotional problems of preschool children and to analyze the mediating effect of the current status of family rearing on parental stress and behavioral/emo-tional problems.METHODS We use convenience sampling to select 258 preschool children in the physical examination center of our hospital from October 2021 to September 2023.The children and their parents were evaluated using a questionnaire survey.Pearson's correlation was used to analyze the correlation between child behavioral and emotional problems and parental stress and family rearing,and the structural equation model was constructed to test the mediating effect.RESULTS The score for behavioral/emotional problems of 258 preschool children was(27.54±3.63),the score for parental stress was(87.64±11.34),and the score for parental family rearing was(31.54±5.24).There was a positive correlation between the behavioral and emotional problems of the children and the“hostile/mandatory”parenting style;meanwhile,showed a negative correlation with the“support/participation”parenting style(all P<0.05).The intermediary effect value between the family upbringing of parents in parental stress and children's behavior problems was 29.89%.CONCLUSION Parental family upbringing has a mediating effect between parental stress and behavioral and emotional problems of children.Despite paying attention to the behavioral and emotional problems of preschool-age children,clinical medical staff should provide correct and reasonable parenting advice to their parents to promote the mental health of preschool-age children.

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.

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.

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.

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.

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.

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.

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.

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.

Children＇s Problem Behaviors During Free Time as an Incentive for the Increase in Social Risks and Health Risks

Since children, as a rule, have more free time than adults, it is adults＇ responsibility to provide children with a chance to spend the time of relaxation, play, and fun in a beneficial way. Unfortunately, children＇s spare time is nowadays very frequently organized for the sake of brushing up children＇s knowledge, skills, and competences, which is accomplished by means of escalating extra-curriculum activities. When expressed by teacher and parents, these ambition-related attitudes pave the way for the disappearance of children＇s personal interests and motivations to perform complicated tasks which are perceived as unwanted or obscure by the affected children themselves. This form of adults＇ behavior may lead to the feelings of frustration, stress, demotivation, or rebellion on behalf of their children. The said emotional states, especially in relation to the lack of spontaneous play, give rise to serious psychic dysfunctions, and the instability of children＇s psychic balance. It may also pave the way for various forms of destructive behavior that mostly characterize children of younger school age who are about to start schooling.

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.

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).

A Survey of Correlation Infertility Self-Efficacy with Behavioral Health Scales in Infertile Women

Background: Infertility is a unique medical challenge that can have health behavioral consequence on infertile women including lack of self-esteem, depression, anxiety, fertility problem in infertile couples. The aim of this study was to evaluate correlation between self-efficacy and health behaviors scales in infertile women. Methods: A cross sectional study was conducted on 89 infertile women with mild to moderate depression (Beck scores 10 - 47) who were recruited from Fatemeh Zahra Infertility and Reproductive Health Research Center. All participants completed Self-efficacy Inventory (ISE) and other health behavioral scales (e.g., the Beck Depression Inventory (BDI), Cattle Anxiety Scale (CAS), Fertility Problem Infertility (FPI), and GHQ). Pearson correlation coefficient and Spearman rho correlation coefficient were used to analyze the data. Variables were included in the study if they had a p-value

The Major Problems and the Governmental Role in Chinese Rural Land Transfer

On the basis of clarifying and defining rural land transfer, the necessity of rural land transfer is analyzed. Land transfer is the necessity in terms of promoting agricultural scale operation and improving production efficiency; proving opportunities for narrowing urban and rural gap; realizing rural surplus labor transfer and facilitating urbanization. Major problems in the existing rural land transfer are analyzed:unclear laws and regulations and rural land transfer lacks relevant legal protection;rural social security system is imperfect and can not solve farmers' worries after land transfer; farmers and local governments are restricted by traditional ideas and it is hard to carry out the land transfer policies; rural system construction is relatively backward and the rural land transfer market is immature. Countermeasures on the governmental behaviors in rural land transfer are put forward: stipulating relevant administrative laws and regulations and perfecting the political system of rural land transfer; perfecting rural social security system and solving farmers' worries after land transfer; changing the ideas and working style of local officials and leading farmers to form the scientific land transfer outlook;and vigorously promoting the construction of system and positively cultivating rural land transfer market.

Promising medical treatment for childhood psycho-cognitive problems

Subclinical electroencephalogram discharges in children with psycho-cognitiVe problems are not uncommon. However, the clinical importance and relationship to cognitive deficits, as well as indications for medical treatment, are not well understood. Transient cognitive impairment, which accompanies electroencephalogram discharges, could negatively influence cognitive abilities over time. Studies have suggested that treatment with antiepileptic drugs normalizes electroencephalogram results, thereby preventing electrical paroxysmal discharges that could be harmful to the developing brain. Physicians should attempt to differentiate between corresponding factors, such as subtle seizures, nature of underlying etiology, stable cognitive deficits, seizure-inducing effects, and potential side effects of antiepileptic drugs prior to initiation of medical treatment for definitive diagnosis of transient cognitive impairment and its consequences. Therefore appropriate criteria for patient selection and proper guidelines for medical therapy, should be addressed in future studies.

The Contributions of Language and Behavioral Synchrony in Developing Affect Regulation in High-Risk Children

Biological vulnerability translates into behavioral risks that often extend beyond the infancy period. Pre-term children born low birth weight are at risk for behavioral and emotional difficulties, however, little is known about how these difficulties manifest and interact with biological risk and environmental factors. This study examined the extent to which children’s language and dyadic relationship factors facilitate affect regulation and behavior problems in low birth weight children (LBW). Sixty-eight preschool-age children and their mothers participated in the study. Children were administered an assessment of cognitive functioning in which verbal ability was examined, and engaged in a laboratory frustration task designed to elicit negative affect to assess emotion regulation. Results revealed correlations among verbal ability, behavior problems, behavioral synchrony, and emotion regulation. Group differences were found in verbal ability and positive affect in which LBW children demonstrated lower verbal ability scores and less positive affect than full-term children. For the full sample, behavior synchrony moderated the relationship between verbal ability and negative emotion regulation. The results provide evidence of the importance of the functional role of language and dyadic relations in the development of affect regulation and behavior problems. The results also elucidate the importance of integrating social emotional information in developing interventions for pre-term children.