Abstract.Parking lot is an important part of urban infrastructure. Whether the parking lot space layout is reasonable is not only related to the happiness and satisfaction of local residents, but also affects the basic factor of urban economic development. Taking parking lot POI data as the research object, this paper analyzes the spatial and temporal distribution characteristics and changing trends of parking lots in Lanzhou city in 2012, 2017 and 2022 by using “Standard Deviational Ellipse” , “Kernel Density ”, “Global Moran’s I” and “Local Moran’s I”. The results show that: 1) the public parking lot … Read more →

Abstract.To address the problem of fractured surrounding rock and support failure in deep coal seam roadways under high-stress conditions, this study takes the auxiliary transportation roadway (west) in the 2103 panel of a mine in Shanxi Province as the research background. The ZKXG30 type mining borehole imaging device was used to conduct precise testing of the loose zone. Five observation boreholes were arranged at key cross-sections of the roadway to systematically analyze the fracture development characteristics and distribution patterns of the roof, shoulder, sidewalls, and floor corners. The … Read more →

Abstract.To obtain environmental parameters of production zones during well completion operations, a high-temperature-resistant downhole multi-parameter monitoring system was designed. By enabling remote monitoring of downhole environmental parameters, the system provides a basis for formulating efficient extraction strategies. To address the challenge of electronic equipment failure under high temperatures, the heat transfer mechanism of circuits within the hermetically sealed environment of downhole electrically controlled flow control valves was analyzed. A thermal simulation model of downhole … Read more →

Abstract.To address the high incidence of triangular fibrocartilage complex (TFCC) injuries among fitness enthusiasts, this study proposes a wrist motion analysis method integrating object detection with flexible pressure sensing. Ulnar-side wrist pressure data were collected and, combined with Python-based key point detection, used to extract three-dimensional wrist trajectories, flexion/ulnar deviation angles, and movement velocities. A novel “pressure coefficient” metric was defined, and together with peak pressure, distribution gradient, and other features, a risk assessment model for injury was … Read more →

Abstract.Semantic segmentation has become a cornerstone of visual scene understanding, particularly in safety-critical domains such as autonomous driving, robotics, and urban surveillance. Recent advances in convolutional and Transformer-based deep learning models have yielded strong performance on standard benchmarks under ideal conditions. However, traditional semantic segmentation methods struggle in real-world scenes characterized by occlusions, overlaps, and partial visibility, which often result in prediction failures and poor generalization. In response to these limitations, occlusion-aware … Read more →

Abstract.This paper systematically reviews the current application status, technical paths, and future trends of machine learning in electric vehicle (EV) charging demand forecasting. Firstly, starting from the background of global energy transformation and EV popularization, it points out the crucial role of accurate charging demand forecasting in grid stability and facility optimization. Secondly, it summarizes the research progress of machine learning technology in three major scenarios: intelligent management of charging piles, battery state evaluation, and charging load forecasting. It focuses on … Read more →

Abstract.To address the issues of easy performance degradation of automotive touch interaction systems in extreme temperature environments and the lack of targeted evaluation in existing systems, this study develops an evaluation system for automotive touch interaction performance in extreme temperature environments. First, through literature analysis, the composition and working principles of automotive touch interaction systems are sorted out, and combined with case studies, the influence mechanisms of extreme temperatures on the hardware materials, electronic components, and software stability of … Read more →

Abstract.Dynamic and highly resource-coupled shipbuilding workshops are highly susceptible to cascading effects stemming from local perturbations, often leading to global scheduling failures. While Digital Twin (DT) technology offers a solution, most existing research focuses on "reactive" rescheduling after a perturbation occurs, lacking the capability for "proactive" prediction and modeling of the perturbation propagation process. To bridge this gap, this paper proposes a novel hybrid model (AGNN-CA) that integrates an Attention-based Graph Neural Network (GNN) with Cellular Automata (CA), deeply … Read more →

Abstract.Coal and gas outburst is a destructive dynamic hazard in coal mining, which seriously threatens the safety of miners' lives and properties and the safety of coal mine production. In order to explore the characteristics and evolution mechanism of coal and gas outburst behavior in depth, this article systematically analyzes the formation mechanism of coal and gas outburst. Through the specific case analysis of coal and gas outburst disasters in a certain mine in Gansu, the key features of outburst behavior are identified. By analyzing the outburst dynamics model and the evolutionary process of … Read more →

Abstract.In the cli-fi novel The Water Knife, Paolo Bacigalupi depicts a world in the near future where droughts are rampant. In the novel, people make great efforts in the recycling of water resources and use a variety of technologies to obtain water for survival. This article focuses on the depiction of water treatment and production technologies in The Water Knife, connects it with existing technologies in the real world, and indicates the significance of these technologies in future application . Read more →

Abstract.With the development of the economy and society, especially the rapid growth of urban construction and industry, the discharge of sewage, wastewater and pollutants has significantly increased. Some rivers have experienced water pollution, turning black and stinking, and the surrounding ecology has seriously deteriorated. The water body has lost its self-purification capacity, which has drawn widespread social attention. In order to improve the quality of urban rivers, based on the actual situation, the causes were analyzed, and common treatment technologies were proposed. For different types … Read more →

Abstract.Anaerobic digestion (AD) is a well-established biological process that converts organic waste into valuable products, including biogas, digestate, and nutrient-rich effluent. This review summarizes the current understanding of AD products, with a focus on their characteristics, applications, and the challenges associated with their utilization. Biogas, primarily composed of methane and carbon dioxide, serves as a renewable energy source, while digestate and liquid effluent can be used as soil amendments and liquid fertilizers, respectively. However, the variability in substrate composition, … Read more →

Abstract.With the rapid evolution of digital technology, the traditional hand drawn style is facing a transformation bottleneck in the field of animation. However, 3D virtual reality (3D VR) technology, with its unique charm of immersive experience, has opened up a new path for visual innovation in animation. This article will focus on the integration mechanism between traditional hand drawn styles and 3D virtual reality technology. From the core dimensions of visual feature deconstruction, technological advantage mining, fusion contradiction analysis, innovative performance extraction, and practical … Read more →

Abstract.The supercritical water/CO₂ mixed environment, through its unique physicochemical properties and synergistic effects, not only enables the decomposition of biomass but also the generation of energy gases and the capture of CO2, demonstrating a significant role in energy and high-value conversion. This paper studies the reactions of different biomass in a supercritical water /CO2 mixed environment, systematically compares and analyzes the reaction results of various biomass, and ultimately concludes that CO2 has the functions of improving thermal efficiency, hydrogen production and carbon … Read more →

Abstract.The Heshui area is located in the Longdong block in the southern part of the Ordos Basin. It is an important exploration and development zone for the Chang 7 oil reservoir group, which is dominated by low-permeability and tight oil reservoirs and has huge resource potential. The Chang 7 oil reservoir group belongs to the Triassic Yanchang Formation (T3y) and is one of the main source rocks and reservoirs in the Ordos Basin. Based on the identification marks of sedimentary facies, as well as the analysis of core samples, comprehensive mud logging data in the study area and previous research … Read more →

Abstract.The intricate and extraordinarily harsh geological environments characteristic of deep oil and gas reservoirs—distinguished by exceptionally high temperatures that routinely exceed 120°C and frequently approach or surpass 180°C in high-pressure, high-temperature (HPHT) settings, intensely elevated formation pressures that commonly surpass 50 MPa and may escalate to values well beyond 100 MPa in overpressured compartments, remarkably high levels of mineralization in formation waters with total dissolved solids (TDS) typically exceeding 100,000 mg/L and often approaching full brine saturation at … Read more →

Abstract.Landslides, as a typical geological hazard, pose a serious threat to the safety of people's lives and property in China. Conducting geological hazard susceptibility assessments plays a crucial role in formulating scientific disaster prevention and mitigation plans. With the development of GIS technology, its application in geological hazard evaluation has become increasingly widespread. This study focuses on Beichuan Qiang Autonomous County in Mianyang City, Sichuan Province, a region in China with frequent landslide occurrences. Slope angle, aspect, elevation, hydrological systems, distance … Read more →

Abstract.The spirit of educators serves as the core guiding principle for building a high-caliber, professional teaching force in the new era, holding significant guiding significance for advancing the high-quality development of physical education programs in higher education institutions. As the spiritual foundation and cultural symbol of educational advancement, this spirit establishes fundamental guidelines and actionable pathways for achieving high-quality development in basic education during the new era. This study centers on promoting the spirit of educators and advancing the high-quality … Read more →

Abstract.With the increasing depletion of conventional oil and gas resources, enhanced oil recovery technology has become the key to maintaining high and stable production in oil fields. Among various EOR technologies, gas displacement, especially mixed-phase displacement, is regarded as one of the most effective methods due to its ability to significantly reduce the residual oil saturation of oil reservoirs. The minimum mixed-phase pressure is a key parameter for achieving gas-flooding mixed-phase in the oil and gas extraction process, directly affecting the efficiency of enhanced oil recovery. This … Read more →

Abstract.A kind of new power transmission technology--HVDC light, is introduced in this paper, which is based on the conventional HVDC technology with VSC and IGBT as its main components. The basic principle, technology characteristics and modeling methods of HVDC light are summarized, followed by a comparison of HVDC light with conventional HVDC. Some applications of HVDC light abroad and the current development in China is briefly introduced. The main research areas at the present time are pointed out and the application prospects for HVDC light are predicted. Read more →

Abstract.Low-resistance oil and gas reservoirs, characterized by their high concealment and significant exploration potential, are specialized reservoirs whose identification accuracy directly impacts the efficiency of hydrocarbon resource exploration and development. This paper systematically elucidates the core genesis mechanisms of low-resistance reservoirs by examining the intrinsic characteristics of micro-pore structures, revealing the coupling relationship between intrinsic factors such as micro-pore systems and mineral composition and macro-logging responses. It comprehensively reviews response … Read more →

Abstract.The Ordovician Magnolia Formation in Odors Basin is one of the core horizons of oil and gas exploration. The third member of Magnolia Formation ( Ma3 member ) is an important part of this formation, and its facilitates choreographically pattern profoundly controls the development and distribution of high-quality reservoirs. In recent years, the predecessors have made many new understandings on the study of the third member of the Madman Formation, but the overall research degree is weak, and the accumulation law and main control factors of the natural gas in the third member of the Madian … Read more →

Abstract.With the rapid growth of the paid micro-short drama market, understanding user characteristics and implementing refined operations have become critical for the industry's sustainable development. This study uses a sample of 1,224 micro-short drama users in Tianjin and employs the K-means clustering algorithm for user segmentation. Three distinct user groups were identified: Socially Driven Youth (under 18, with high impulsive payment tendency, and preference for light-hearted themes), Price-Sensitive Seniors (over 56, value cost-effectiveness, prefer simple plots), and Quality-Discerning … Read more →

Abstract.Research on circular suspended footing diaphragm walls in "soil-rock combination" strata remains underdeveloped. Understanding deformation and internal force variations during foundation pit excavation is crucial for mitigating safety risks during construction and operation. Based on a circular shaft pit in a water diversion project, this study employs 3D numerical simulations to analyze surface settlement, maximum pit bottom rebound, diaphragm wall deformation ,and internal forces under varying rock-socketed depths. Results indicate: (1) Excavation impacts surface settlement within 0.44H (H … Read more →