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Every year, a number of Chinese undergraduates from urban teacher universities are selected as volunteer pre-service teachers to teach in schools located in underdeveloped rural areas. In this qualitative case study, the researchers explore four pre-service teachers' 1-year experience as volunteer educators in rural schools, their communities of practice in the south and west of China, and present their reflections on the challenges, including how their responses (re)shaped their teacher identity. It is found that these pre-service teachers have built their social capital through rural teaching experience, and they have begun to construct their professional teacher identity within that transitional community of teaching practice. The paper contributes to discussions of pre-service teacher education and pre-service teacher identity construction in the context of secondary education in rural China and in other parts of the world.

Starting from the perspective of method principle, system application, and technical characteristics, this paper systematically discussed the research progress of intelligent monitoring and early warning technology concerning fire risk of belt transportation, including inspection technology, distributed optical fiber temperature measurement technology, machine vision technology, wireless communication network technology and data-driven technology. Moreover, the advantages and disadvantages of those monitoring and early warning technologies were discussed. Based on the existing monitoring means of coal mine roadway and the development hotspot of digital intelligence, we proposed a new intelligent monitoring and early warning system for mine belt transportation fire and early warning: “Big-Intelligent-Mobile-Cloud” (big data, intelligent, mobile internet, and cloud computing respectively) coal mine belt fire monitoring system and multi-method coupling, three-dimensional, continuous monitoring system.

The material constitutive equation of 25CrMo4 steel was established through an isothermal compression experiment. First, a thermal compression experiment was carried out with a Gleeble-3500 thermal simulator to study the thermoplastic deformation behaviour of 25CrMo4 steel at various temperatures (850, 950, 1050, and 1150 °C) and strain rates (0.01, 0.1, 1.0, and 10 s−1). The measured true stress–strain curve showed that when the temperature is constant, the flow stress increases with the strain rate, whereas when the strain rate is constant, the flow stress decreases with the temperature. Then, the constitutive model of peak stress of 25CrMo4 was established after analyzing the stress and strain statistics. The model parameters were optimized. The accuracy of the flow stress constitutive model was verified by comparing the flow stress prediction model with the experimental results. The hot forging process of the inner core wheel was numerically simulated based on DEFORM-3D v11 software, and the parameters of this process were formulated by analyzing the metal flow rate and equivalent stress and strain fields. [ABSTRACT FROM AUTHOR]

Taking the railway passenger car water tank as the research object,the bidirectional fluid-solid coupling method is used to model and numerically analyze the liquid impact sloshing problem in the passenger car tank using the finite element analysis software ANSYS Workbench. By studying the continuous impact load on the water tanks with different water contents in the longitudinal direction of the vehicle,the change history of the tank structure stress with time and the deformation history of the tank structure with time are obtained. The results show that the maximum stress and maximum displacement of the box gradually increase with the increase of water content. Through analysis,the weak position of the box structure is determined,By plotting the comparison curve between the test value and the simulation value of each measuring point,The consistency between the calculation model of the water tank and the actual model was verified. Shows that the two-way fluid-solid coupling method and water tank model used in this paper have good reliability,which provides a reliable analysis method for the design and optimization of the water tank structure of the railway passenger car.

The rapid increase of Asian immigrant students in Canadian classrooms demands more systematic and increased language support to ensure all English language learners (ELLs) achieve success in school. However, research has found mixed results on the usefulness of current English as a Second Language (ESL) support programs and a growing dissatisfaction among students and parents about ESL, suggesting further investigation is needed to improve the provision of ESL in the schools. This paper details how one school and one ESL teacher responded to the needs of newly arrived Asian (i.e., Chinese) ELL students by documenting the school's and teacher's journey in revamping the pull-out ESL program into a culturally responsive English for Academic Purposes (EAP) program with a focus on immersion, community engagement, and a pedagogy of cultural reciprocity. The case has important implications for redesigning current ESL programs in the context of changing immigration.

Based on the theoretical perspectives of socio-constructivism and language socialization, this study reports two Chinese Canadian first grader's experiences of language and literacy learning in and out of school in a unique sociocultural setting where they were "the mainstream." The article examines the students' reading and writing practices in school and at home, as well as their parents' and teachers' thoughts, beliefs, resources, and concerns regarding their literacy learning. The findings suggest that there exists great linguistic and cultural discontinuity between the Chinese children's school and home language and literacy experiences. The children view school and home literacies as separate entities rather than a continuum. Such perceptions further widened the gaps between their development of "school literacy" which is mediated through English language and culture and that of "home literacy" which is mediated through Chinese language and culture. These children's learning experiences were also influenced by the conflicts between the school's cultural values and those of their families, which include dissensions on biliteracy expectations, homework, parenting, and instructional approaches (e.g., the use of drawing and free play). Living between two separate worlds of school and home, the students are often burdened with the consequences of the cultural clashes and become "sites of struggle" between teachers and parents, and hence, are placed in a dangerous position for potential failure at school. (Contains 2 figures.)

This article reports on a sample of 26 middle-class Chinese immigrant parents' perspectives on their children's reading, writing, mathematics learning, and homework, and on the parents' involvement in and communication with mainstream American schools. Findings suggested both consistencies and discrepancies between their beliefs and practices. Areas of discrepancies include their reported involvement in their children's reading and their attitudes toward homework. However, the parents were more consistent in their beliefs and practices in writing and mathematics involvement. These consistencies and discrepancies may be influenced by the parents' familiarity with school instructions in the particular skill areas. These findings argue for more effort to enhance Chinese parents' knowledge base on how American school functions and to build stronger school-home communication and collaboration. (Contains 10 tables and 2 endnotes.)

Questions Kouritzin's discussion of researcher subjectivity in life history research and argues that life history research should have a transformative agenda. (Author/VWL)

To reduce the complexity of monitoring and management of robots in service, a six-axis robot control system based on digital twin is proposed. Based on 3D printing technology, a six-axis robot is developed. At the same time, the kinematics of the robot is analyzed, and its kinematics model is built using the D-H rule. The forward and reverse kinematics of the robot are solved. Through the two-way data interaction between the model layer and the entity layer, the simulation operation of the robot and the twin synchronous operation of the virtual real robot are realized. Based on the real-time data drive, the key parameters of the robot are monitored, and the health parameter table of the current, voltage, joint vibration, and other parameters of the robot system is established. Based on the idea of comparison of the same kind, the abnormal state detection of the robot is realized through quantitative analysis. Finally, the feasibility of the proposed system is verified by experiments. [ABSTRACT FROM AUTHOR]

The precision instruments and equipment are often utilized in low-frequency and micro-amplitude vibration systems, in which many vibration isolators of rubber materials are widely used. Ignoring the low-frequency amplitude will result in errors in the fatigue life design of the vibration isolators and predicting the dynamic response of each frequency band accurately becomes necessary. However, integer-order models cannot describe the frequency dependence of rubber materials, while the fractional-order models can describe it instead. On the other hand, the elastic restoring force is strongly nonlinear under large deformation, and the vibration of the nonlinear system contains multiple harmonic components. In order to solve those issues, the fractional nonlinear Nishimura model is used to characterize the constitutive relation of vibration isolators such as air springs, which are made of carbon black filled natural rubber. The high-order harmonic balance method is used to obtain the steady-state response of the vibration system, while the fourth-order Runge–Kutta method is applied to simulate the dynamic response of the system in the low-frequency region, and the Lyapunov exponent is used to determine the stability of the system. Furthermore, the influence of parameters on the amplitude–frequency characteristics of different frequency bands is also studied, and a method to solve the optimal damping coefficient is proposed based on the primary resonance amplitude–frequency curves. The results show that there is a diversity of periodic motions in the process of adjacent super-harmonic resonance transition. Numerical simulations also demonstrate that multi-periodic motions coexist in the system. The motion transition law between the polymorphic coexistence region and its adjacent regions is summarized. [ABSTRACT FROM AUTHOR]

Framed within Coleman's theory of family capital, this article examines how different home variables such as family physical, human and social capital affect immigrant children's second-language acquisition in the homes of four Chinese immigrant families in Canada. Specifically, the study analyzes the relationships between family physical capital and family investment in second language learning, between parental human capital and levels of parental involvement, and between family social capital and access to familial and community resources. The analysis demonstrates that parental educational backgrounds, their occupational choices and chances, and their adaptation and integration into Canadian society had a significant impact on the families' accumulation and activation of family capital to support their children's second-language learning. (Contains 1 note.)

Describes a Chinese Canadian immigrant family that is encountering difficulties with schooling, demonstrating the complex interrelationship between home literacy, culture, and politics of schooling. Findings suggest that cultural mismatch theory alone cannot explain minority school failure. Rather, multilevel interactions, including cultural differences, modes of incorporation, and differential power relationships between school and home result in minority students' school difficulties. (Contains references.) (SM)

Studied the early literacy practices of a 3-year-old Chinese girl in her family restaurant in an underprivileged community in Canada. The literacy practices indicate that home contexts have a role in shaping emergent literacy. Discusses implications for teaching minority children. (SLD)

Examines the relationship between literacy practices and the construction of cultural identity in a Filipino immigrant family in Canada through ethnographic methods. Reports that literacy depends on family relationships imbedded in cultural identity. Explains that the research enables educators to understand immigrant families and their literacy. Includes references. (CMK)

Examined, through naturalistic observation, the multiple pathways taken by immigrant learners in joining a cross-cultural classroom community. Found that social acceptance by peer culture influenced children's creation of their identities; that images and ideals of the mainstream culture fueled children's dreams and desires; and that sharing culturally conscious literature fostered awareness and appreciation of others. (DLH)