The Effect of Educational Expectations on Children’s Cognition and Depression

Cognitive and psychological conditions in childhood will have an important impact on adult life. There is relatively little literature on the impact of educational expectations on children’s cognition and psychological health from the perspective of urban and rural differences. Based on the cohort data of the CFPS from 2012 and 2016, this study screened a total of 994 children aged 10–15 to study the effects of parents’ educational expectations and children’s educational expectations on children’s cognition and depression. The results show that both parents’ educational expectations and children’s educational expectations have a positive impact on children’s cognition. Parents’ educational expectations and children’s educational expectations have negative effects on children’s depression. When parents’ educational expectations are greater than their children’s educational expectations, educational expectations have a negative impact on children’s cognition and a positive impact on children’s depression. In both urban and rural samples, parents’ educational expectations and children’s educational expectations have a positive impact on children’s cognition and a negative impact on children’s depression. However, the impact of educational expectations on children’s cognition and depression was greater in rural areas than in urban areas. When parents’ educational expectations are greater than their children’s educational expectations, educational expectations in urban areas have no effect on children’s cognition

Experimental Investigation on Mechanical Properties of Cemented Paste Backfill under Different Gradations of Aggregate Particles and Types and Contents of Cementing Materials

Obtaining the optimal gradation of aggregate particles is beneficial for improving the strength of cemented paste backfill (CPB). Consequently, the uniaxial compression tests with acoustic emission (AE) monitoring were performed on CPB, for which the aggregate particles satisfied the Talbot grading theory. The effects of the Talbot indices of aggregate particles and types and contents of cementing materials on the mechanical properties of CPB were analyzed. The AE characteristics and stress-strain behaviors of CPB were discussed. The results show that the specific Talbot index reflected the optimal strength and deformation properties of CPB is 0.45, and the maximum UCS is 7.6 MPa. The mechanical properties of CPB also can be optimized by changing the type of cementing material and increasing the content of cementing material. The effects of the Talbot indices of aggregate particles and types and contents of cementing materials on the crack damages reflected by the AE signals of CPB are mainly observed in the oa stage and ab stage during the loading process

Analysis of cardiac ventricular wall motion based on a three-dimensional electromechanical biventricular model

This paper describes a biventricular model, which couples the electrical and mechanical properties of the heart, and computer simulations of ventricular wall motion and deformation by means of a biventricular model. In the constructed electromechanical model, the mechanical analysis was based on composite material theory and the finite-element method; the propagation of electrical excitation was simulated using an electrical heart model, and the resulting active forces were used to calculate ventricular wall motion. Regional deformation and Lagrangian strain tensors were calculated during the systole phase. Displacements, minimum principal strains and torsion angle were used to describe the motion of the two ventricles. The simulations showed that during the period of systole, (1) the right ventricular free wall moves towards the septum, and at the same time, the base and middle of the free wall move towards the apex, which reduces the volume of the right ventricle; the minimum principle strain (E3) is largest at the apex, then at the middle of the free wall and its direction is in the approximate direction of the epicardial muscle fibres; (2) the base and middle of the left ventricular free wall move towards the apex and the apex remains almost static; the torsion angle is largest at the apex; the minimum principle strain E3 is largest at the apex and its direction on the surface of the middle wall of the left ventricle is roughly in the fibre orientation. These results are in good accordance with results obtained from MR tagging images reported in the literature. This study suggests that such an electromechanical biventricular model has the potential to be used to assess the mechanical function of the two ventricles, and also could improve the accuracy ECG simulation when it is used in heart torso model-based body surface potential simulation studies

Nature and the Spiritual World : On the Characteristics of D. H. Lawrence\u27s Two Short Stories, "Odour of Chrysanthemums" and "Daughters of the Vicar"

D. H.ロレンスの短編「菊の香」と「牧師の娘たち」に描かれた自然は,目に見える自然だけでなく,主人公のこころの世界(精神世界)を象徴的に表している.その独特な描写法はあまり注意されていないが,もっと評価されるに値すると考える.短編作家としてのロレンス像を再評価することが小論の目的である