Shandong University

Optimal Frequency Control of Offshore Wind Farms Integrated via MMC-HVDC Based on Available Rotor Kinetic Energy

Existing wind power optimization control strategies often lack a qualitative analysis of the relationship between wind power energy and system frequency, which may lead to insufficient or excessive frequency support, thereby reducing the effectiveness of wind power frequency supp...

AI transformation, resource reallocation, and corporate capacity utilization

Artificial intelligence (AI) is reshaping the global economic landscape, prompting China to initiate a new wave of AI application pilot programs. Using the AI Application Pilot Zones policy as a quasi-natural experiment, this study examines the impact of an AI-driven transformati...

Sports tourism as a pathway to older adults’ psychological well-being: a dual-pathway model integrating broaden-and-build and social identity perspectives

This study explores how sports tourism is associated with older adults’ eudaimonic well-being through dual psychological mechanisms. Drawing on Broaden-and-Build Theory and Social Identity Theory, the research examines an emotion pathway in which positive emotions and sense of ph...

Causality enhanced machine learning for cumulative live birth rate prediction with threshold band optimization in in vitro fertilization

Accurate and individualized prediction of cumulative live birth rates (CLBR) remains an unmet need, as existing models largely overlook individual risk preferences and the translational gap between predictive outputs and actionable clinical decisions. We aimed to develop and vali...

Lower respiratory microbiome and metabolome alterations in pediatric ARDS secondary to community-acquired pneumonia

Abstract Background Pediatric acute respiratory distress syndrome (ARDS) is a severe complication of community-acquired pneumonia (CAP) with high mortality, but the microbial and metabolic mechanisms driving its onset remain unclear. This study aimed to characterize these disturb...

Digital transformation capabilities and innovation performance in skating manufacturing: a hybrid SEM–ANN analysis

Digital upgrading in specialized manufacturing sectors is associated with firms’ development of flexible IT infrastructure, agile response capability, system integration, and strategic digital vision. However, limited empirical modelling has examined how these digital manufacturi...

External incentives, social norms, and citizens’ participation in digital co‐production: A survey experiment

Abstract With the rapid pace of digital transformation, motivating public participation has become a critical challenge for advancing both the theory and practice of digital co‐production. Drawing on incentive theory and social norm theory, this study uses a survey experiment con...

Nanofibrous aerogels with continuous conductivity gradient for ultrabroadband absorption-dominant electromagnetic interference shielding

Electromagnetic interference (EMI) shields are limited by a severe impedance mismatch with free space, leading to strong reflections and secondary radiation. Here, we introduce ultralight all-polymer aerogels featuring a continuous through-thickness conductivity gradient (MCAs),...

Hepatocyte Hedgehog activation attenuates acetaminophen-induced liver injury through a Vegfa-associated vascular response

Abstract Acetaminophen (APAP) overdose is the leading cause of drug-induced acute liver failure, yet early pathways linking hepatocellular stress to tissue integrity remain incompletely defined. Here, we demonstrate that canonical Hh signaling is rapidly activated in centrilobula...

From informal hawkers to state employees: newspaper vendors’ labor incorporation and identity reconstruction in Shanghai, 1911–1956

This article examines the transformation of Shanghai’s newspaper vendors from marginalized hawkers to state workers between 1911 and 1956. Vendors operated in a guild-based, hierarchical system dominated by powerful wholesalers, functioning largely beyond state control through in...

Mechanistic Insights into the Anti-Inflammatory Activity of a Sulfated α-Glucan (VpG) from Volutharpa ampullacea perryi

A novel sulfated α-glucan (VpG), with an ultra-high molecular weight of approximately 2250 kDa and a sulfation degree of 18.6%, was previously isolated from Volutharpa ampullacea perryi and shown to alleviate dextran sulfate sodium (DSS)-induced ulcerative colitis in mice. Howeve...

Confined shear-induced structure discretization enables re-entrant super-repellent metals

Re-entrant structures are fundamental to achieving robust liquid repellency, especially for low-surface-tension liquids. However, existing fabrication techniques often face a trade-off among mechanical durability, substrate geometry compatibility, large-area processing, and rapid...

Local Space-Charge Memory and Grounded-Electrode Transient Response in a Needle–Plane Air Gap Under Polarity Reversal

Polarity reversal changes not only the instantaneous electric field in a needle–plane air gap but also the subsequent field–particle coupling through the charged-particle distribution established before reversal. For a configuration in which the grounded needle and grounded lower...

Physical and mental health conditions in men who have sex with men: a global umbrella review of meta-analyses

Men who have sex with men (MSM) face a disproportionate burden of health problems. Prior syntheses among MSM have not comprehensively addressed key areas such as non-communicable diseases, mental health, and comorbidities. This umbrella review aimed to synthesize and evaluate met...

Perchloric acid (HClO 4 ) drives atmospheric new particle formation enhanced by dimethylamine, ammonia and sulfuric acid: mechanisms and implications

Abstract. Recent studies have revealed observations of atmospheric perchloric acid (HClO4, PA) in the Arctic. There are few studies of PA forming aerosol particles in coastal marine regions. We use quantum chemical calculations and Atmospheric Clusters Dynamic Code (ACDC) to comp...

AGIRA: Anatomy-Guided Image–Report Alignment with Finite-Scale Fractal Analysis for Chest X-Ray Representation Learning

Background/Objectives: Chest radiographs contain hierarchical relationships between global thoracic configuration and organ-specific findings, together with scale-dependent anatomical boundary geometry and heterogeneous texture distributions. Coarse image–report alignment may ove...

VO2-Based Thermochromic Films Modified by Transparent Matter-Repellent Surfaces with Superior Self-Cleaning Ability and Mechanical Robustness

Vanadium dioxide (VO2)-based thermochromic films are highly attractive for smart window applications due to their ability to dynamically modulate solar radiation in response to ambient temperature. However, their practical deployment is significantly hindered by poor long-term st...

Does Digitalization Widen Labor Income Inequality?

ABSTRACT We develop a growth model that endogenizes the occupational choice of workers with different ability levels to study how digitalization affects labor income inequality. The framework incorporates digitalization's multifaceted effects on the economy: (i) it influences eco...

The cholesterol, high-density lipoprotein, and glucose index and its derived indices predict cardiometabolic multimorbidity development and progression in metabolic dysfunction-associated steatotic liver disease individuals: a prospective cohort study

Dysregulation of cholesterol, high-density lipoprotein cholesterol, and glucose metabolism is thought to be an important metabolic link between metabolic dysfunction-associated steatotic liver disease (MASLD), type 2 diabetes (T2D), and cardiovascular disease. Although the choles...

Early-life recurrent antibiotic use and risks of adult kidney cancer and sex-specific cancers: a prospective cohort study in the UK Biobank

There is little evidence about the associations of long-term or recurrent antibiotics use (LRAU) during early life with cancer risk. Our study aimed to assess the associations via Cox proportional hazards regression, using data from the UK Biobank (UKB). The main outcomes were th...