Tianjin Normal University

As a critical urban energy infrastructure, the frequent occurrence of natural gas pipeline deflagration accidents in recent years has resulted in significant loss of life and property. Current research on natural gas pipeline safety risks generally focuses on the inherent dangers of the pipelines themselves, i.e., “line” safety, while overlooking the broader impacts of such accidents on the communities they serve, i.e., “area” impacts. This study investigates 56 communities in the core urban area of Kunming City, China, and constructs a community pipeline risk measurement and evaluation framework based on the pressure–state–response model, considering linear and areal risks. The framework incorporates indicators related to the hazardousness of disaster-causing factors, the vulnerability of disaster-bearing entities, and the timeliness of emergency response. A geographic information system is used to quantify the results. The study finds that: (1) the hazardousness of disaster-causing factors, with a weight of 0.367 (0–1 scale), plays a dominant role in the comprehensive risk assessment, particularly related to pipeline pressure, wall thickness, and service age; (2) pipelines are subject to considerable safety risks due to aging, wear, and corrosion; (3) high risk communities account for up to 20% of the total, primarily due to aging buildings and low coverage of emergency response units; (4) the linear risk level is more spatially dispersed due to environmental influences, while the areal risk is more concentrated. This study further maps the risk of natural gas accidents in urban areas, providing decision support for municipalities to implement preventive measures and reduce the potential impact of safety incidents such as natural gas pipeline explosions.

In the era of the gradual prosperity of the digital economy, the inclusion of data assets in financial statements has become a key measure of the national strategy and one of the key issues of concern in contemporary society. Currently, some researchers have extensively explored the current status, problems, and financial impacts of data asset disclosure, but there is a lack of in-depth analysis on the aspect of effectiveness. Therefore, this study takes China Mobile as an example and uses methods such as case analysis and comparative research to analyze the various effects brought about by China Mobile's data asset disclosure and the problems it still faces. The study finds that the scale and growth rate of China Mobile's data asset disclosure rank first in the industry, attracting widespread attention from investors and customers, and generating positive market feedback. In addition, it has a certain impact on some financial indicators. Despite achieving results, it still faces challenges such as insufficient measurement methods, disclosure compliance, and transparency of data sources. They require further breakthroughs to improve the practice of including data assets in financial statements.

Despite growing interest in understanding urban networks in cyberspace, data availability remains a significant challenge, as few studies have systematically visualized the entirety of cyberspace networks. Using the Baidu Index, which tracks the exposure of cities in online media and their search activity by users in other cities, this analysis visualizes and examines the urban networks of 296 Chinese cities from 2012 to 2019. Our findings highlight the following key insights. The spatial distribution of web search activity forms a diamond pattern, with the four core regions of Beijing-Tianjin-Hebei, the Yangtze River Delta, the Pearl River Delta, and Chengdu-Chongqing serving as the main vertices. Within this configuration, the most popular cities are predominantly located in eastern China, reflecting both its advanced economic development and substantial urbanization. While the uneven pattern of online connectivity has narrowed from 2012 to 2019, the network structure in cyberspace is strongly associated with traditional factors such as population size, economic capacity, and geographical proximity. Besides, cyberspace creates new opportunities for peripheral cities to elevate their online visibility and thus partially reshape local or sub-regional networks, offering an alternative pathway for certain mid-western cities. This reshaping is evident in the increased inbound attention to cities like Chengdu and Urumqi, which have boosted their online presence and enhanced their positions within the urban network. Flows in cyberspace should be a vital consideration in future urban spatial planning and regional development strategies. The insights from this analysis offer valuable guidance for policy-making to redirect a portion of the digital attention to enhance the online presence of less-developed regions.

The primary objective of this study is to compare the processes of colour localisation in Minnan cement patterned tiles and Macau Portuguese Azulejos from the late 19th century to the mid-20th century. This research is grounded in the historical context of global modernisation and colonial expansion. By examining the developmental trajectories of both as vehicles for trans-maritime and trans-cultural dissemination, this study observes that Minnan cement patterned tiles exhibit characteristics of ‘active acculturation’. Colour techniques introduced from Southeast Asia blended with local Minnan aesthetics and folk beliefs, forming a visual system characterised by multiple hues and high saturation. These tiles became deeply embedded within the clan structures and identity narratives of overseas Chinese communities, evolving into flexible and creative cultural symbols that bear witness to the history of modern overseas Chinese migration. However, Macau Portuguese azulejos, represent a “passive transplantation”. Their signature blue-and-white palette, serving as a visual emblem of Portuguese colonial culture, was systematically applied in public and religious architecture. This became a distinct cultural marker of colonial rule profoundly shaping the city's visual landscape. By comparing these two distinct pathways of colour localisation, this study demonstrates that colour serves not merely as a decorative element, but as a material testament to cultural adaptation and power relations within coastal regions of modern China.

The geographic location of social media users is crucial for understanding user behavior, optimizing advertising, and supporting location-based services such as emergency awareness and event monitoring services. However, existing Twitter user geolocation methods primarily focus on explicit social relationships between users while overlooking implicit location correlations, which affects the accuracy of user geolocation. To address this, this paper proposes a Twitter user geolocation method (GeoICMF) based on implicit location correlations and multi-scale feature fusion. GeoICMF introduces a novel location association graph construction method to effectively capture implicit location correlations among users, an innovative multi-scale feature fusion model to dynamically fuse multi-scale features and generate richer user representations, and a pioneering geographic partitioning method to better adapt to user location distributions and enhance geolocation accuracy. Extensive experiments on three real-world datasets demonstrate that GeoICMF outperforms state-of-the-art baseline methods in Twitter user geolocation tasks, validating the effectiveness and superiority of the proposed method.

Abstract In asymptotically anti-de Sitter (AdS) spacetime, we consider a real massive scalar field in the Einstein–Maxwell-Scalar (EMS) model and examine both scalar-hairy black hole solutions induced by the nonminimal coupling to the Maxwell field and tachyonic-hairy solutions driven by the scalar potential. When the scalar potential vanishes, scalar-hairy black holes emerge with profiles and properties similar to those observed in flat spacetime. The presence of the scalar potential additionally induces tachyonic-hairy solutions, leading to the coexistence of these two distinct hairy phases in different regions of the parameter space. The phase diagram reveals a first-order phase transition line between the tachyonic-hairy and scalar-hairy phases, originating at a critical point in the extreme temperature and chemical potential regime. Our detailed analysis shows that this phase transition is directly associated with the self-overlap region of the scalar-hairy phase and its start point. Moreover, increasing the coupling strength $$\lambda $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>λ</mml:mi> </mml:math> shifts the critical point to higher temperature and chemical potential.

BackgroundSuicide remains a leading cause of death among young adults, yet traditional mediation models often oversimplify the complex and interactive processes linking childhood psychological abuse, stress, and suicidal behavior.ObjectiveThis study applied a network analytical framework to examine the inter-factor associations among dimensions of childhood psychological abuse, life-event stress responses, and suicidal behavior in Chinese college students.MethodsA total of 693 first-year college students completed validated self-report measures of childhood psychological abuse, stress responses to negative life experiences, and suicidal behavior. Gaussian graphical models were estimated using EBICglasso, and bridge centrality indices were computed to identify key nodes linking abuse, stress, and suicidality. Network comparison tests were conducted to examine gender differences in network structure and global connectivity.ResultsThe estimated network showed dense within- and cross-domain connections among psychological abuse, stress responses, and suicidal behavior. Neglect, intrusion, and arousal emerged as prominent bridge nodes linking early psychological abuse and suicidal outcomes through stress-related pathways. Network structure was invariant across genders; however, males exhibited significantly higher global network strength than females (p < 0.05), indicating stronger overall connectivity among network components.ConclusionThese findings suggest that suicide risk emerges from dynamic interactions among interrelated psychological systems rather than from linear causal pathways. By identifying bridge nodes—particularly arousal and intrusive stress responses—this study highlights potential leverage points for targeted, trauma-informed, and culturally sensitive suicide prevention efforts among college students.

Prior research has offered substantial evidence for letter transposition effect in word reading, yet studies in logographic languages such as Chinese are scarce and have largely focused on adults. This study aimed to determine whether second-grade children show character transposition effect impact in recognizing two-character Chinese words and to examine potential differences between the left and right visual fields corresponding to the two cerebral hemispheres. A lexical decision task was used across two experiments. Experiment 1 tested 56 second graders and manipulated three stimulus types-normal words, Transposed pseudo-words, and Substituted pseudo-words-to verify the presence of the effect. Experiment 2 recruited an independent sample of 97 second graders and applied a lateralized presentation paradigm, presenting stimuli to either the right or left visual field (RVF/LVF), which project to the left and right hemispheres (LH/RH), respectively, to assess hemispheric differences. Experiment 1 revealed a significant character transposition effect among second-grade children. Experiment 2 showed no significant differences in the magnitude of the effect between the two visual fields. These findings provide new developmental evidence for Chinese word reading and important implications for theories of position encoding. Future studies should trace its developmental trajectory across a wider age range and diverse learning contexts.