Ministry of Industry and Information Technology

Switching dominant tones from trailing edge tonal noise

The tonal noise generated at the trailing edge of an airfoil under low-to-moderate Reynolds number conditions can exhibit multiple tones. While time-averaged spectra typically show a single dominant tone, specific cases within a narrow velocity range reveal the existence of two d...

Experimental investigation of wake and load modifications of a submerged horizontal cylinder by a wrap-around flexible appendage under wave–current conditions

The hydrodynamic effects of a wrap-around flexible appendage attached to a submerged horizontal cylinder were experimentally investigated under current, wave, and wave-current conditions using synchronized force measurements, particle image velocimetry, and image-based motion tra...

Binary-error compensation iteration for optimized Fourier single-pixel imaging

Fourier single-pixel imaging utilizing binary-speckles modulation offers significant advantages in high-speed acquisition; however, it is inherently constrained by quantization-induced image degradation. To address this challenge, we propose an optimized reconstruction method bas...

Fragility modeling of air-supported membrane roofs under unfavorable fire area growth: A time-based reliability approach

Air-supported membrane structures, characterized by complex roof geometry, diverse combustible layouts, and limited fire resistance, pose challenges to conventional fire analysis models and prescriptive fire protection design. This study develops a time-based fire fragility frame...

Latent versus sensible thermal storage for load-shifting energy management in medium-deep U-type geothermal heat pump systems: A comparative performance analysis

Thermal energy storage can enhance load shifting and extend heat-pump shutdown periods in medium-deep U-type borehole heat exchanger (MDUBHE) heating systems. However, latent and sensible thermal energy storage are commonly evaluated separately, and their differences in heat-supp...

Causality-integrated graph learning for multi-endpoint toxicity prediction

Toxicity prediction remains a longstanding challenge in the safety assessment of numerous artificial chemicals. While conventional single-endpoint models are effective for predicting many molecular properties, they fail to capture the complex mechanisms underlying toxicity, which...

Geobacter-dominated electroactive biofilms exhibit stable electricity generation under high-level heavy metal and organochlorine stress

Bioelectrochemical systems (BESs) are promising technologies for wastewater treatment and resource recovery, but their stable operation can be compromised by toxicant loading. Here, a Geobacter -dominated electroactive biofilm was developed and its resilience was evaluated under...

Multi-Dimensional Semantic Map Design and High-Precision Localization for Train Group Control

Group-based train control is expected to break the capacity bottleneck of conventional block-based signaling by operating trains in closely spaced formations, which requires continuous, precise train positioning and semantic maps that encode control-relevant elements such as the...

Robust fault-tolerant control for wastewater treatment processes via integrated adaptive dynamic programming with fault-aware experience replay

Wastewater treatment is a crucial measure to address water scarcity and water pollution, and various control methods have been proposed for wastewater treatment processes (WWTPs). However, actuator faults can compromise existing control strategies and destabilize the system. In t...

Leveraging room-temperature plastic deformation for tailoring inorganic thermoelectrics

Mg 3 (Sb, Bi) 2 has emerged as a promising material due to its favorable combination of high thermoelectric performance and ductility. However, a key question remains regarding how plastic deformation affects its thermoelectric properties. Here we investigate the evolution of def...

Auditory-inspired cross-attention learning of spectral and modulation signatures for ship recognition

Underwater ship recognition is fundamentally challenged by acoustic complexity and limited labeled data. This paper proposes a physics-driven multidimensional feature fusion (MDFF) framework via auditory-inspired cross-attention learning. Rather than relying on isolated acoustic...

Outcomes and computational analysis of visceral branches in thoracoabdominal aortic aneurysm endovascular repair: a single-center study

To report the clinical outcomes of endovascular repair for thoracoabdominal aortic aneurysms (TAAA) and to investigate the hemodynamic mechanisms underlying post-operative visceral artery complications using computational fluid dynamics (CFD). A retrospective analysis was conduct...

Synthesis of Fe-Co Bimetallic Supported on Cotton Residue Biochar: Catalytic Performance and Mechanistic Investigation for CO2 Hydrogenation

Biochar carriers were prepared from cotton residue waste, and Fe-Co bimetallic catalysts with different ratios were constructed using impregnation method. Their catalytic performance in CO2 hydrogenation to hydrocarbons was investigated. The structural evolution and catalytic beh...

A hybrid Fuzzy–PSO framework for across-track radiometric beam pattern extraction from multi-sector multibeam backscatter

Radiometric correction of multibeam echosounder (MBES) backscatter is critical for quantitative seabed interpretation. MBES beam patterns are pre-calibrated but drift over time. Hiroji’s framework extracts relative beam patterns from measured data by separating seafloor angular r...

Independent Amplitude‐Phase Control in Liquid Crystal for Near‐Field Anti‐Counterfeiting and Far‐Field Holographic Encryption

ABSTRACT Liquid crystal (LC) optical devices provide a promising platform for optical encryption and anti‐counterfeiting applications. However, conventional design paradigms for LC light‐field modulation often involve coupled amplitude and phase responses, limiting design flexibi...

Study on the vortex-induced Helmholtz resonance with a cylindrical roof opening via high-order dynamic mode decomposition

The vortex-induced Helmholtz resonance (VIHR) is one special phenomenon of the internal pressure response due to the coupling of normal Helmholtz resonance and vortex shedding around the opening. In order to investigate the behavior of the VIHR, the wind tunnel test is conducted...

Evaluation of axial stress‐axial strain behavior of high‐strength fiber‐reinforced lightweight aggregate concrete ( HSFRLC ) confined with spiral stirrups under axial compression

Abstract The axial stress–strain models of confined high‐strength fiber‐reinforced lightweight concrete (HSFRLC) were important key inputs for analytical programs to predict the full‐range loading deformation of confined HSLC and HSFRLC. The descending branch of the axial stress‐...

Meter-depth and multi-polarization addressable zoom 3D meta-holography

Propelled by rapid advances in nanofabrication, meta-holography has become a frontier hot spot in optics. 3D meta-holography, in particular the large depth and multi-polarization addressable ones, with extraordinary expansion of the control dimension and information capacity, off...

Upconversion edge imaging using single-beam second-harmonic generation

Near-infrared (NIR) imaging is essential for biological and materials sensing, yet high-performance NIR detectors are often cost-prohibitive and plagued by high dark current. Nonlinear frequency upconversion offers a compelling solution by shifting NIR signals into the visible sp...

A Data-Driven Adaptive Predictive Control Framework for Stabilizing Dissolved Oxygen and pH in Bioreactor Systems Under Temperature Disturbances

Maintaining stable dissolved oxygen (DO) and pH conditions is critical for reliable operation of bioreactor systems used in cell culture and bioprocess manufacturing. However, accurate regulation of DO and pH remains challenging due to nonlinear process dynamics and variations in...