An Introduction to the Chinese National Community systematically expounds General Secretary Xi Jinping's important thoughts on ethnic work, and is the founding work of "Chinese National Community Studies". The book analyzes in depth the theories, historical concepts and practical values of building the Chinese national community, answers the relevant basic concepts, clarifies the theoretical origins, and provides theoretical support for forging a strong sense of Chinese national community in the new era. Guided by a correct historical view of the Chinese nation, the book clearly explains the formation and development of the Chinese national community and shows the development pattern of pluralism and unity. An Introduction to the Chinese National Community summarizes the practical concepts of ethnic work in the new era, providing a guide to action for promoting national unity

Ice and snow tourism stands is the mainstay of the winter tourism market, bringing unprecedented travel experiences to people. The three provinces in Northeast China are rich in ice and snow resources, which is a key zone for China to establish ice and snow tourism resorts. Through literature research, logical analysis, and other methodologies, this article focuses on ice and snow tourism resorts in the three provinces of Northeast China. Based on the explanation of relevant concepts, it analyzes the potential and strategies for high-quality development of ice and snow resorts. Research has found that Northeast ice and snow tourism resorts possess numerous excellent conditions, including resources, markets, and policies. By integrating innovative elements into their operations, they are increasingly thriving. However, they also encounter numerous challenges, such as insufficient product differentiation, outdated service provision, and a lack of collaborative mechanisms. In light of this, this article proposes several measures: rational allocation of ice and snow resources, enrichment of ice and snow festival activities, enhancement of ice and snow product quality, improvement of ice and snow facility construction, strengthening of ice and snow talents, and enhancement of the ice and snow coordination mechanism. These measures aim to foster high-quality development of ice and snow tourism resorts in Northeast China.

With the continuous improvement of the capital market governance system, it is common for Chinese enterprise managers to use more hidden real earnings management to manipulate earnings, which seriously damages the interests of enterprises and their stakeholders. This paper empirically examines the impact of ESG rating on firms' real earnings management by using Shanghai and Shenzhen A-share listed firms from 2012 to 2023. The results of the study indicate that the ESG rating is negatively correlated with firms' real earnings management, the better the ESG rating of a company, the lower the level of true surplus management. The mechanism analysis shows that ESG can inhibit firms' true surplus management activities by reducing both agency cost and increasing the effect of analyst focus. The research has important reference value for deeply understanding how ESG rating affects the real earnings management behavior of enterprises and promoting the ESG construction of Chinese enterprises.

Through field investigation and literature review, this paper studies the indoor space decoration art of Mongolian Prince Alxa’s Former Residence. The space decoration expression forms of Mongolian Prince Alxa’s Former Residence are analyzed from the perspective of the indoor interface decoration, space compartment, indoor display, furniture and decoration materials, ect. The art characteristics and the regional cultural characteristics of the indoor space of Mongolian Prince Alxa’s Former Residence are revealed.

Based on the theory of ethnic embeddedness, this paper analyzes mechanisms through five dimensions——space, culture, economy, society and psychology——and explores theories of ethnic relations and interactions. On the basis of the fieldwork, the study concluded that it is necessary to create a harmonious spatial structure, to link cultural exchanges, to promote economic cooperation, to maintain a climate of solidarity in society, and to foster a psychological concept of symbiosis. Through these, the all-encompassing embeddedness of minzu is gradually realized. What makes it possible to forge a community and a future where everyone has a stake, thus enabling the Chinese national community will be progressively well built, developed and preserved.

Digital platform has become an important foundation for the development of the internet economy. The potential power of internet platform not only broadens the consumption channels of the public, but also drives the transformation and upgrading of platform enterprises. Because the free pricing model, dynamic competition and network externalities of internet platform enterprises differ from the traditional enterprise economy, the platform anti-monopoly phenomenon appears. The attribute construction of internet platform enterprises, the identification of relevant markets and market dominance all have an impact on the identification of abusing market dominance. Therefore, we should follow the responsive regulatory approach, implement classified supervision on internet platform enterprises, constantly improve the identification ideas, and accurately regulate abusive behaviors, so as to ensure the smooth operation of internet platform enterprises.

Based on bilateral trade data between China and Russia from 2010 to 2020, this study employs a trade gravity model to explore the impact of logistics performance index (LPI), information technology development index (IDI), and product quality upgrading on trade promotion, and simulate the trade potential value. The research finds that product quality upgrading has the highest promoting effect on bilateral trade growth, followed by logistics performance level and information development level. This promoting effect holds for different types of products and different stages of trade. Even after changing measurement indicators and constructing Bartik instrumental variables, the above conclusions remain valid. Additionally, statistical analysis of the trade product structure and trade product quality between China and Russia reveals strong complementarity in trade but significant differences in product quality.

As the officer in the Jin Dynasty, Dutong ran through the whole development of the regime, and the ethnic composition of the different natures of Dutong was vastly different. In the early Jin Dynasty, Dutong of armies internal and external as well as Dutong of administrative districts were all held by Jurchen with a strong military and political nature, showing a single ethnic characteristics. But with the change in the nature of Dutong and the absorption of other ethnic components within the Jin army, Han, Bohai, KHitan and Xi people entered the ranks of Dutong, which made the ethnic components of Dutong diversified. As a result, the Dutong with only military functions maintained the structure of Jurchen as the main and the participation of other ethnic groups. However, due to the influence of ethnic policy and political changes in the periods of Hailing and Xuanzong, the non-Jurchen components became prominent. The ethnic composition of Dutong of the Jin Dynasty changed from single to diversified, which enriched the fighting means and modes of the Jin army, and promoted the interaction, communication and fusion among various ethnic groups in the Jin Dynasty.

Education, as a key factor in promoting human capital accumulation and social development, has a significant impact on entrepreneurs’ well-being. Based on human capital theory, status attainment theory, and social capital theory, this study utilizes cross-sectional data from the 2021 Chinese General Social Survey (CGSS) to deeply explore the mechanism of how educational attainment affects entrepreneurs’ well-being. The results show that educational level can significantly and directly enhance entrepreneurs’ well-being. Further analysis reveals that educational level influences entrepreneurs’ well-being through three mediating variables: income, perceived social status, and social interaction. Among these, income has a negative impact on entrepreneurs’ well-being, while perceived social status and social interaction have a positive impact. Additionally, the study finds significant differences in the impact of educational attainment on entrepreneurs’ well-being across different age groups, household registration status, and entrepreneurial motivations. These conclusions provide a strong basis for universities to carry out targeted entrepreneurship education and for the government to formulate refined entrepreneurship policies.

This study utilizes panel data from 30 provinces in China for 2012 to develop an evaluation index system assessing common prosperity among farmers and rural areas in relation to Digital Rural Development. Empirical analysis reveals a positive correlation between digital rural development and rural prosperity, with enhancements in digital infrastructure and circulation management significantly boosting prosperity levels. Additionally, the development of rural industries and financial sectors effectively leverages digital advancements to foster rural prosperity. Regional variations in the impact of digital construction on rural prosperity are noted across different areas of China. The findings emphasize the need to improve digital infrastructure, harness rural industrial and financial growth, explore region-specific strategies, and prioritize policies that promote the common prosperity of farmers and rural communities.

Since the establishment of the Northern Wei Dynasty, Tuoba Xianbei entered the south of the Great Wall and began to form a mixed cultural form of Hu and Han. This paper analyzes and discusses the modification of Xianbei during the Northern Wei Dynasty and the cultural integration after the migration to the south. Emperor Xiaowen of the Northern Wei Dynasty undertook a series of actions to "change the surname" of the Xianbei people, which greatly changed the cultural traditions of the Xianbei people, and the result was to transform the tribal cultural identity of the ethnic group into a national Chinese cultural identity. As one of the important contents of the reform of the Northern Wei Dynasty, the Taihe reform mainly promoted the Xianbei people to shift from tribal culture to dynastic culture through top-down edicts, although it encountered some resistance in the early stage, but in the end the Xianbei culture successfully absorbed and integrated into the Central Plains culture, promoted the exchange, exchange and integration of various ethnic groups in the deepest level of cultural identity, and created a pluralistic and integrated cultural form of harmonious coexistence of multi-ethnic cultures.

The digital economy utilizes new technologies and uses knowledge and information as production factors to continuously promote industrial structure transformation and upgrading, economic structure optimization, technological transformation, and production efficiency improvement. The study introduces foreign direct investment as an intermediary variable, based on data from 31 provinces and regions in China from 2013 to 2021, to explore the impact and mechanism of the development level of the digital economy on the upgrading and rationalization of industrial structure. Through empirical research, significant impacts and partial mediating effects were found. At the same time, through analysis of regional heterogeneity and threshold effects, it was found that the mediating effect has significant regional heterogeneity and conforms to the single threshold effect. Through robustness testing, it was found that lag effects exist and have different impacts on industrial structure.

Based on the goal further exploring the path of digital transformation of China's tourism industry and promote the high-quality development of the tourism industry, this paper examines the innovation of digital forms and modes in the current tourism industry. It is found that the application of digital technology has reshaped the development pattern of the tourism industry, but it cannot replace the tourism products and services themselves, and the tourism industry empowered by digital technology is still deficient. The paper proposes paths and countermeasures to achieve the digital transformation of the tourism industry from the four dimensions of policy and discipline construction, technology and industry integration, tourism data security, and talent training methods.

The new connotations of ideological and political education in the field of jurisprudence in the new era lie in adhering to Xi Jinping Thought on the Rule of Law as the fundamental guideline and deeply integrating it into the discipline. The overall strategy for implementing ideological and political education in jurisprudence is to seamlessly integrate it with every aspect of talent cultivation, including curriculum design, classroom teaching, textbook construction, faculty development, and theoretical research. The focal points of implementing ideological and political education in the field of jurisprudence are rooted in cultivating moral integrity and promoting talent development. This encompasses fostering students' ethical and moral qualities within the jurisprudence discipline, encompassing activities such as nurturing ideal beliefs, inheriting China's rich legal traditions, promoting the spirit of socialist rule of law, and nurturing a strong foundation in legal professional ethics and conduct.

In order to solve the problem that PCB bare boards were likely to have missed detections and false detections during the small target defect detection process, a PCB bare board defect detection algorithm based on improved YOLOv7, called YOLO-BCN, was proposed. First, the BRA attention mechanism was introduced into the original YOLOv7 backbone network to achieve more flexible computing allocation and content awareness, so that the network had dynamic query-aware sparsity. Then the CARAFE upsampling operator was replaced to extract more shallow features, thereby effectively improving the detection performance of the model for small targets. Finally, the NWD loss function was introduced and combined with IoU to optimize the regression loss function and reduce the sensitivity to small target position deviations. Experimental results show that the mAP@0.5 value and mAP@0.5:0.9 value of the improved YOLOv7 are increased by 3.28% and 2.74% respectively, compared with the original model, the F1 factor is increased by 3.91%, and the detection rate is 46.84 FPS, which effectively improves the accuracy of PCB small target defect detection.

Immigration is not only the historical driving force for China's unified multi-ethnic country development, but also one of the important ways to promote ethnic exchanges and integration. The third-line construction and a large number of "third-line immigrants" produced by the third-line construction not only expand the space of ethnic interaction, but also enrich the elements of ethnic integration, and profoundly affect the communication and integration of ethnic groups in China's ethnic areas. It is manifested in five aspects: population structure, social development, living conditions, cultural form and national identity. Examine the characteristics of the three-line construction to promote ethnic integration and intermingling, mainly including national policy dominance, economic factors, prominent hierarchical interaction and group involvement. To analyze the correlation between the three-line construction and ethnic blending, and to explore the connotation, characteristics and rules of historical immigration, is a useful attempt to construct the "Chinese experience" of the monility and integration of ethnic populations in the new era.

Instead of the direct reflection of ethics principles in texts, narrative ethics is the interaction between ethics and narrative, by which the ethics in the novel represent itself through narrative and the narrative techniques reversely reflect the ethics. The Last Quarter of the Moon mainly tells the story of the ethnic group of Ewenki. Its author Chi Zijian focuses more on the ethics and value hidden in the daily life than the life itself. By means of, narrative perspective shift narrative intervention and narrative set of time-space, Zijian Chi creatively hides ethics and values in different narrative forms, the narrative form and ethic appeals are subtly combined.

This paper investigates the phenomenon of Unethical Pro-organizational Behavior (UPB), where employees engage in unethical acts to benefit their organization. It aims to understand theoretical mechanism driving such behavior and its consequences in the digital context. This paper reviews existing main research on unethical pro-organizational behavior, explores its concept and characteristics, and identifies four key mechanisms influencing its occurrence: social exchange, social identity, social cognition, and social learning. Building upon this foundation, a research model based on contingency theory is proposed to examine the individual and organizational consequences of unethical pro-organizational behavior. The study sheds light on the factors that contribute to employees engaging in unethical behavior for organizational gain. It proposes a model that explores the consequences of unethical pro-organizational behavior. By identifying its antecedents and consequences, the study provides valuable insights for organizations to manage and prevent such behavior, ultimately promoting ethical and responsible conduct within the workforce.

The marginalization and diversity of grassroots society in Xunhua Ting during the Qing Dynasty created a complex network of grassroots power. In response to the unique characteristics of the region, the Qing court made administrative efforts to adapt to the local conditions. In the dynamic adjustment of administrative construction,a unique cross-system dual management system was ultimately formed, which includes the direct province and the fiefdom. This system demonstrates the nesting and mutual construction of grassroots society and dynastic system, and is a phased product of the regional dynastic transformation of Xunhua Ting. In the cross-system society of Xunhua Ting,the Qing Court reached the connection and integration with the dynastic power through religious incorporation.In terms of institution, the dynasty incorporated religion into the management of the national hierarchy and formed a stable circle structure in the grass-roots social governance. In terms of culture, dynasty conforms to the transition from traditional authority to charismatic authority in regional society,and reflects the growth of legal-rational authority in Xunhua society all the time. The orthodox growth of institutions and culture is an important indicator for the process of dynastic development. After the fall of the Qing Dynasty, dynasization completed its historical mission, and the dynasization achievement became an important historical element in constructing the national identity of five-nationality unity for a republic.

The treatment of low temperature and short sunshine before strawberry transplanting can promote the early flowering of strawberry and prolong the fruit cycle. At present, the main techniques of promoting flower and fruit production in advance in strawberry production are cold storage low temperature seedling raising and plateau seedling raising. However, there is a unified standard for low-temperature and short-day treatment of strawberries, which leads to inconsistent flowering periods of strawberries and frequent occurrence of fruit stubble. In this paper, the factors affecting the flower bud differentiation of strawberry, such as seedling, temperature, light and hormone, were reviewed. The relationship between low temperature and flower bud differentiation of strawberry was emphatically expounded,such as the advantages and disadvantages of different low temperature treatment methods, the effect of low temperature on the flowering period of strawberry, the effect of low temperature on the endogenous hormones of strawberry, and the physiological mechanism of low temperature promoting flower of strawberry, which provided some theoretical help for the early flower promotion technology of strawberry.

To address the challenges of overall blurriness and structural inaccuracies in few-shot Chinese font generation, a deformable generative network that integrates channel-prior convolutional attention and depthwise separable convolutions is proposed. The network architecture which builds upon the foundation of deformable generative networks is enhanced with channel-prior convolutional attention and depthwise separable convolutions to capture global features better and ensure accurate structural generation of Chinese font characters. Comparative evaluations against four classic models, DG-Font, DG-Font++, MX-Font, and CF-Font, demonstrate that the proposed method excels in metrics such as SSIM (Structural Similarity Index Measure) and FID (Fréchet Inception Distance). Furthermore, ablation experiments validate the effectiveness of the proposed network model. The experimental results demonstrate that the proposed network model effectively mitigates the issues of overall blurriness and structural errors in few-shot Chinese font generation.

Aviation service art and management is a newly added undergraduate major of the Ministry of Education in 2019 which is still in the initial exploration stage. However, the major construction level is related to the quality of talent training and whether it can provide talent support for the high-quality development of China's civil aviation industry. Based on comparative analysis, this paper takes 38 colleges and universities with aviation management major as research objects, reviews the development process of aviation service art and management from two stages, and points out that the lack of national teaching quality standards leads to problems in training objectives, curriculum system and teacher team construction of aviation management. In view of this, this paper puts forward the following suggestions: （1） Appeal to the Ministry of Education to issue the national standards of undergraduate teaching quality suitable for aviation management as soon as possible; （2） According to the adjustment principle of ‘increasing and decreasing’, we should adjust the basic courses of subjects, and continuously strengthen the construction of innovation, advanced and challenging degree of courses; （3） Advocate that school teachers, enterprise teachers, teachers with high academic qualifications and excellent management talents in the industry build a teacher team together; （4） Point out that school-enterprise cooperation can advance to deeper cooperation from three aspects: teaching team building, practice base building and establishment of aviation management committee.

Addressing the importance of confirmation procedures and the challenges encountered in their execution, this study takes the confirmation center of Yitong Accounting Firm as an example to comprehensively analyze and studies the impact of applying an electronic confirmation platform for the digitalization and centralization of confirmation processes. The analysis reveals that the digitalization and centralization of confirmation processes can significantly improve the speed of confirmation operations and reduce operational costs. However, there are still many problems in terms of security and constraints in the digitalization and centralization of confirmation processes. By analyzing the cause of these problems, targeted suggestions are proposed for relevant departments, accounting firms, and audited entities in the application process of the electronic confirmation platform, with the aim of promoting the healthy and orderly development of digitalization and centralization in confirmation processes.

In the process of using deep learning to assist computer character libraries in generating Chinese characters, there are often problems such as stroke sticking, stroke errors, and insufficient style details. To improve the quality of the generated model, this article combines the actual needs of the font design industry to construct a stroke annotation dataset containing 71 strokes and 1960 Chinese characters. This dataset covers Chinese characters with different structures and complexities, and 71 strokes are categories extended based on the 32 stroke categories in GB13000.1 standard and industry practice. This article uses the Labelme tool to manually annotate the dataset, and converts the JSON data generated from annotated Chinese character images into VOC format, ultimately obtaining an 8-bit stroke image dataset. This dataset is tested by FCN, U-Net, and SegNet. Compared the original images with the predicted results, it shows good prediction performance. And the values obtained from the evaluation indicators MPA, MIoU, and FWIoU are all good, which also proves the effectiveness of the dataset.

The educational concept of the "Great Ideological and Political Course" has put forward higher requirements for the construction of ideological and political theory courses in universities. Our study aims to find strategies and means to improve the teaching quality from five dimensions, namely, enhancing students' subjective initiative, improving the effectiveness of classroom teaching, promoting the innovation of practical teaching mode, improving the scientific evaluation system, and strengthening the construction of ideological and political courses teachers. Actively promote the integration and coordination of ideological and political courses with various educational resources in educational and teaching practice, and promote the high-quality development of ideological and political courses.

To solve the problems of students who lack a deep understanding of Physical Chemistry and show little interest in the subject,as well as to enhance the quality of the course,the teaching team adopts an integrated approach of science and education.This approach promotes research-based teaching,establishes connections between course content and the forefront of national strategic development,and incorporates new theories,cutting-edge technologies,and their own scientific research achievements into theoretical instruction.It has improved the teaching quality and level,enables students to deeply understand the knowledge points and the application and importance of Physical Chemistry in scientific research and industrial production.Moreover,it has stimulated students’ learning enthusiasm,innovative spirit and feelings of prospering the country through science and technology.Through the integration of science and education,the teaching of Physical Chemistry has successfully achieved the goal of applying theoretical knowledge to practical applications.

With the continuous advancement of technology, micro-nano fabrication technologies plays a crucial role in various fields. However, traditional teaching methods face numerous challenges due to the complexity, high costs, and strict environmental requirements of micro-nano fabrication technologies. The construction of virtual simulation courses for micro-nano fabrication technologies aims to provide new teaching model and methods for cultivating high-quality talents. Through virtual simulation courses, students can master the theoretical knowledge and practical skills of micro-nano fabrication technologies in a safe and efficient virtual environment, enhancing their learning outcomes, innovative abilities, and lay a solid foundation for the development and application of micro-nano processing technology.

Chinese language courses in ethnic universities are imbued with elements that promote national unity and progress, making them vital for developing a strong sense of a unified Chinese nation. This study delves into the fusion and creative advancement of fostering the Chinese national community awareness alongside ideological and political education within Chinese language courses at these institutions. By synergizing Chinese language instruction, ensuring seamless integration with specialized courses, and leveraging the concerted efforts of various educational agents, this collaborative endeavor seeks to establish a "community for ideological and political education." It aims to fulfill the duty of "educating for the Party and the country" thoroughly, while also providing fresh insights and approaches for the meaningful evolution of Chinese language courses in ethnic universities.

This paper explains that improving of the quality of the construction of student party branches is an important content of the college grass-roots party building work in the new era. It is the political requirement to uphold and strengthen the leadership of the party, the necessary path to implement the strategy of building a powerful education country, and the mission of the times to implement the fundamental task of cultivating morality and people, which has important and far-reaching practical significance. At present, the construction of college student party branches is faced with problems and challenges such as the need to strengthen the theoretical armed forces, the insufficient standardization and specification construction, and the weak exemplary role of student party members, which affect the effectiveness of the construction of college student party branches. This article intends to promote the quality improvement of political construction, standardization and specification construction, and work style construction through three measures: strengthening theoretical armed forces, strengthening team building, and strengthening the role of pioneers and models, in order to promote the improvement of the construction quality of college student Party branches in the new era.

As the folk oral art spread in the Horqin area, Horqin narrative folk songs are usually repeated with short and delicate musical passages matched with many rhymes and accompanied by the narration. They have many characteristics such as numerous stories and rich tunes.Based on the oral formula theory, it can be found that the formula application features of Horqin's narrative folk songs are simplified and highly flexible, and syntactic formulas such as rhyme, sentence and paragraph provide a stable structure for the construction of poetic lines.The formulas of different levels are organized according to the rules, forming a complex and orderly relationship network, which maintains the normal operation of oral performance systems of Horqin narrative folk songs.

With the rapid development of digital technology, a large number of traditional physical retail enterprises have gradually joined the wave of transformation and upgrading. Taking DSJT as an example, this paper analyzes how DSJT has achieved innovative development of its business model through digital transformation and obtained remarkable results. However, DSJT also faces challenges in the process of digital transformation and development, such as a weak technical foundation, talent shortage, organizational cultural conflicts, and difficulties in grasping market dynamics. In response to these issues, suggestions are proposed to strengthen the technical foundation and talent development, adjust organizational structure and culture, and focus on customer needs and market changes. Based on this basis, this paper summarizes the insights of DSJT's digital transformation and development for the retail industry trends, providing a reference for the digital transformation and innovative development of the retail industry.

The Mongolian epic Jangar has a grand geospatial structure. The geographical narrative is not only a typical feature of Jangar, but also an important component of the oral formula of Jangar. By using Geocriticism that has emerged in recent years to explore the narrative logic of Jangar, and analyze places, spatial structure and literary drawings in the epic, it can not only show the real-life basis of the epic Jangar, but also discover the worldview and cosmology of the Mongols contained in the epic, to show the cultural connotation of the epic Jangar.

This paper proposes a method for comparing calligraphic fonts based on t-SNE (t-Distributed Stochastic Neighbor Embedding) dimensionality reduction,sparse learning feature extraction,and Euclidean distance similarity analysis. First,t-SNE is used to reduce the dimensionality of high-dimensional font sample data,revealing their underlying manifold structures. Next,sparse learning is employed to extract key features from the reduced data,further characterizing the stylistic traits of the three fonts. Finally,Euclidean distance is applied to calculate the similarity between different fonts,quantifying the similarities and differences in calligraphic styles. Experimental results show that the fonts,Cuanbaozi,Lishu and Kaishu exhibit unique distribution characteristics in the manifold space,while significant overlaps are observed in certain regions,confirming their stylistic similarities in calligraphy.

In order to distinguish the homonyms and polysemous words in Korean，and to communicate better，this paper starts from their definitions and types，and then analyzes the three criteria，namely，etymological identity，semantic approximation and syntactic attributes，and expounds their rational use．The criteria for distinguishing between homonyms from polysemous words in Korean are not fixed，but may multiple and present a trend of development．

"Probability Theory and Mathematical Statistics" is an important basic course compulsory for all majors in engineering. In order to improve the teaching efficiency, under the OBE teaching concept, the smart teaching model is applied to all aspects of the teaching design of the course, so as to maximize the advantages of smart teaching and improve the teaching efficiency. Guided by students' learning outcomes, reverse thinking is adopted to reconstruct teaching objectives and reorganize teaching contents. Then, teaching strategies are designed, and evaluation models are constructed, so as to improve students' learning effects.

In today's society where globalization and information technology are becoming increasingly advanced, changes in cultural concepts have a profound impact on college students’second language acquisition , which poses new challenges and requirements for educational practice. This article starts from the background of changes in modern social and cultural concepts, and explores in depth the impact of these changes on college students’ second language acquisition , as well as how educators can adjust their teaching strategies to adapt to these changes. Specific strategies include promoting cross-cultural communication and understanding, cultivating students' cultural adaptability, and utilizing technological tools to support second language acquisition and cultural education, aiming to improve the effectiveness of second language teaching and promote the comprehensive development of students.

This article proposes a diesel engine fault diagnosis method that combines Variational Mode Decomposition (VMD) and Extreme Learning Machine (ELM) to diagnose and classify diesel engine faults. Aiming at the nonlinear and non-stationary characteristics of diesel engine vibration signals, an optimized VMD decomposition method based on Sparrow Search Algorithm (SSA) is proposed to achieve good decomposition performance. A classification model based on Grey Wolf Optimization (GWO) algorithm for optimizing ELM is proposed to address diverse types of fault signals in diesel engines, making the classification performance more stable. Finally, the proposed method is applied to the fault detection and recognition of Isuzu 6BB1 diesel engine, with a fault recognition accuracy of 98.04%. The diagnostic results verify that GWO-ELM has high accuracy, and this method is feasible and effective.

This paper is to develop a novel method for the retrofit of heat exchanger networks by using Heat Exchanger Load Diagram (HELD) after determining energy target and modified path based on Energy Transfer Diagram (ETD) and Bridge Analysis (BA). The aim of the new method is to systematically generate multiple retrofit Heat Exchanger Networks (HENs) of the same quality as far as the minimum energy consumption and the minimum number of heat exchangers are concerned. The concept of cutting point is first proposed and the redistribution of heat load in HENs is realized by moving the stream curve vertically. Combining with heuristics, the number of heat exchangers required in the retrofit HEN is minimized. The HELD of existing HEN is constructed to determine the stream to be moved and the feasible cutting points are selected, and multiple retrofit HENs can be obtained according to the HELD generated by each cutting point, and these solutions are preliminarily compared for further evaluation. In this paper, a milk pasteurization plant is adopted as an example to demonstrate the effectiveness of the proposed method. Four Maximum Energy Recovery (MER) networks with the minimum number of units are obtained, and 395 kW of both hot and cold utility consumption, that is, 26% of cold utility consumption, are saved. Comparing with those reported ones in literature, two new solutions of the same quality are found, and the effectiveness of them is verified.

In the process of changing from traditional teaching mode to mixed teaching mode, a lot of teaching achievement data are produced. A visual system of student achievements is designed, which is mainly composed of front-end visual module and back-end user management module. The system adopts MVC design model, introduces SpringBoot framework to build JavaWeb project, and adopts Thymeleaf template engine. ECharts open source chart framework is used to realize data visualization. The appropriate DOM containers are set and a series of chart parameters are configured to generate visual charts through direct reference ECharts.js file. By applying visualization technology to teaching achievement data, the relationship between teaching achievement data is shown in the form of chart, and the potential value between student achievement data is clearly displayed in front of people.

Strengthening the consciousness of the chinese national community is the main line of the Party's ethnic work in the new era. It is an important task for universities in the new era to firmly cast the consciousness of Chinese nation community throughout the whole process and every link of college education. As the main front of the education of strengthening the consciousness of the Chinese national community,universities should give full play to the guarantee role of "Three Comprehensive Education" in the realization of the modernization of Chinese education, explore the practical significance and development path of strengthening the consciousness of the Chinese national community, and establish a fully coordinated, diversified and three-dimensional education system. Train new people who can take on the great task of national rejuvenation.