Abstract.The hydraulic cylinder of the drilling pump is inevitably eroded by drilling fluid during operation, resulting in a decrease in the service life of the hydraulic cylinder. The surface strengthening of the inner chamber of the hydraulic cylinder can effectively improve its service life. However, the specific erosion behavior and surface strengthening effect evaluation of the hydraulic cylinder still need to be studied. To study the erosion behavior of gooseneck pipes in drilling fluid environment and evaluate the surface strengthening effect, this paper establishes a calculation model for the … Read more →

Abstract.In recent years, with the rapid development of China's social economy and the growing awareness of environmental protection among the general public, the problems of excessive resource consumption and environmental pressure caused by traditional construction methods have become increasingly prominent, which have emerged as a key bottleneck restricting the high-quality development of the construction industry. Currently, China has a large stock of existing buildings; among them, existing public buildings serve as typical energy-intensive building stock, and relevant statistics indicate that the … Read more →

Abstract.This paper systematically reviews the theoretical evolution and research progress of "sense of place"from the perspective of cultural geography, exploring its core connotations, multidimensional structure, and practical value. As a product of human-environment interaction, sense of place encompasses three core dimensions: place identity (cognition of distinctiveness), place attachment (emotional bond), and place dependence (functional connection). Its dynamic and polymorphic nature is highlighted by differences in disciplinary perspectives and among various groups. International research, with … Read more →

Abstract.Against the backdrop of global climate change, flood disasters exhibit the characteristics of frequent occurrence, wide coverage and high destructiveness, evolving into a complex "chain-breaking" crisis. The traditional single-carrier rescue mode is confronted with efficiency bottlenecks and structural defects, which make it difficult to meet the practical rescue demands. Based on the differentiated scenarios of floods, this paper constructs three three-dimensional collaborative schemes, namely Truck-Drone collaboration in urban waterlogging, Truck-Boat intermodal transport in basin floods, … Read more →

Abstract.Accurate forecasting of photovoltaic (PV) power is essential for secure grid operation, but remains difficult due to meteorological uncertainty and the coarse spatial resolution of numerical weather prediction (NWP) data. To address these challenges, this study develops a hybrid framework that integrates physical modeling with machine learning. The PVWatts model is first applied as a physical baseline. Building on this, historical power records, temporal statistical features, and NWP data are incorporated into a LightGBM regression model for day-ahead forecasting. Comparative t-tests confirm … Read more →

Abstract.Aerobic starvation, as a low-cost and easy-to-operate regulatory strategy in biological wastewater treatment, modulates microbial metabolism and community structure by constructing a substrate-depleted environment, thereby altering wastewater treatment performance. Studies have demonstrated that the efficacy of aerobic starvation exhibits significant pollutant specificity and complexity: there is no unified and precise temporal definition for short-term versus long-term aerobic starvation, with most literature defaulting to a treatment duration exceeding 30 days as long-term, while short-term … Read more →

Abstract.Driven by both the upgrading of global health needs and the increasing prominence of Traditional Chinese Medicine's (TCM) own advantages, the "going global" process of TCM continues to accelerate, and its international recognition is gradually improving. AgeClub data shows that the global TCM market size reached US$29.1 billion in 2024, and is projected to grow at a CAGR of 5.1% from 2025 to 2034, with emerging markets becoming the core growth point for TCM companies going global. Latin America, as an emerging market that values traditional medicine and is rich in medicinal plant resources, … Read more →

Abstract.Under the guidance of the two carbon emission reduction goals of carbon peak and carbon neutralization, the installed capacity of China 's electrochemical energy storage power stations is constantly expanding, but its associated safety problems are posing severe challenges. In recent years, the fire and explosion accidents of electrochemical energy storage power stations have continued, and the safety problems of energy storage power stations have attracted much attention. In order to strengthen the safety protection of the whole life cycle of electrochemical energy storage power station, this … Read more →

Abstract.In the context of intelligent manufacturing, the automation and intelligent upgrading of welding inspection have become core requirements in industrial fields. Traditional manual inspection faces challenges such as low accuracy, poor efficiency, and difficulties in adapting to hazardous environments. The integration of machine vision and welding robots provides a key solution to these issues, with precise calibration of binocular vision systems serving as the core prerequisite for this integration. This study systematically investigates the calibration of binocular vision systems in welding … Read more →

Abstract.China's special needs trust system provides important support for strengthening the economic life security of people with disabilities, but it has also exposed three major dilemmas in practice: “slow service implementation,” “difficulty in business development,” and “imperfect support mechanisms.” In essence, these institutional dilemmas conceal obstacles in the financial system, and these obstacles are common in most developing countries. Within the framework of a social model, this paper reveals the generation logic of the three major obstacles in China's current financial system, … Read more →

Abstract.Against the backdrop of profound adjustments in the global economic landscape and a rising tide of anti-globalization, the entry into force of the Regional Comprehensive Economic Partnership (RCEP) presents a historic opportunity for China’s high-quality development of foreign trade. This paper systematically explores the mechanisms and policy responses through which RCEP empowers China’s high-quality trade growth. The study shows that RCEP functions through five interrelated and progressively reinforcing mechanisms-cost reduction, division enhancement, structure optimization, innovation … Read more →

Abstract.This paper systematically summarizes the research progress of double-focusing imaging methods in seismic exploration. As an observation system evaluation method based on wave theory, the double-focusing imaging method can directly reflect the prestack migration imaging effect and provide a scientific basis for the design of observation systems in seismic exploration. It systematically sorts out the theoretical basis, development history, algorithm improvement, application examples and future trends of the double-focusing imaging method, focuses on expounding the evolution process of the … Read more →

Abstract.Current academia predominantly focuses on "how ESG affects corporate performance," with insufficient exploration of the reverse causality, i.e., the intrinsic logic of how performance impacts ESG. As a crucial lever for enterprises to implement new development concepts and achieve high-quality development, ESG practice relies on corporate performance for its essential resource foundation. Based on a sustainability research perspective, this paper uses A-share main board listed companies on the Shanghai and Shenzhen Stock Exchanges from 2011–2022 as a research sample. It focuses on the impact … Read more →

Abstract.Red sports culture is a unique cultural form formed by the Chinese Communist Party leading the people during the revolutionary war era. It carries rich revolutionary spirit and profound historical and cultural connotations and serves as an important resource to enhance cultural confidence and build a strong sports nation in the new era. This article, based on the perspective of cultural confidence, systematically reviews the current research status and contemporary value of red sports culture, deeply analyzes the difficulties and challenges faced in its inheritance and development, and … Read more →

Abstract.As data resources become a new factor of production, public data is becoming a key driving force to promote innovation and development. Its similarity with land resources and the comparability between digital industry chain and real estate industry chain make data finance a new model to replace land finance, help local governments to broaden fiscal revenue and mitigate hidden debt risks. This project aims to explore the role of public data capitalization mechanism in promoting the construction of data finance, and help local governments obtain stable and long-term income channels by building a … Read more →

Abstract.Currently, China's dependence on foreign oil has exceeded 70% and continues to rise, underscoring the urgency to intensify domestic oil and gas exploration and development efforts. The C8 oil layer group in the E Basin represents a critical stratigraphic unit for research. However, to date, no comprehensive and systematic study has been conducted on the sedimentary microfacies of the C8 section, significantly impeding the progress of subsequent oil and gas exploration and development. This study integrates lithologic markers and well-logging facies indicators to conduct an in-depth … Read more →

Abstract.Carbon measurement is the core foundation for the transportation industry to achieve green and low-carbon development. China has not yet established a unified technical specification system in the field of transportation carbon measurement, with key challenges including insufficient equipment adaptability, lack of traceability specifications, and unclear formulation priorities. To address these issues, this study integrates the Hall Three-Dimensional Structure, Entropy Weight Method, and TOPSIS Method to construct a systematic and practical transportation carbon measurement technical … Read more →

Abstract.Flood disasters are among the most frequent and destructive natural hazards in China, making flood prevention and mitigation a persistent issue critical to national security and development. From the perspective of policy attention and through the lens of punctuated equilibrium theory, this study examines the evolution of governmental policy focus on flood governance. Utilizing Python, we conduct high-frequency word identification, co-word analysis, and keyword clustering on 325 policy documents from 1949 to 2024. The findings reveal that China’s flood governance policy has evolved through … Read more →