Jiaming Zhang

Atomically dispersed Ru and Ru nanoparticle interplay the selective hydrogenation for efficient C–O bond cleavage of lignin

Zheyuan Ding, Juncheng Zhao, Jiaming Zhang, Junzhong Xie et autres

Catalytic hydrogenolysis is a promising strategy for converting lignin into valuable aryl platform chemicals, contingent upon the availability of high-performance catalysts. The philosophy for the catalyst rational design towards high conversion and selectivity was rarely reported to the best of our knowledge. …

us, cn (code pays fourni par la source)

Response Surface Optimization of High-Durability Fly Ash–Slag Blended Concrete as an Eco-Friendly Repair Material

Hua Zhen Wei, Anyi Chen, Chunhe Li, Jiaming Zhang et autres

To address the durability deficiencies and limited service life of concrete structures exposed to complex service environments such as chloride attack in marine and underground engineering, this study employs fly ash (FA) and ground granulated blast-furnace slag (GGBS), typical eco-friendly materials, as …

cn, jp (code pays fourni par la source)

Clay minerals evidences for cold-warm fluctuations in the Early Silurian

Zhibo Zhang, Jiaming Zhang, Hengye Wei, Huan Li et autres

The Late Ordovician and Early Silurian transition is an important period of geological evolution, attracting increasing attentions. However, the cause for the biotic recovery from the end-Ordovician mass extinction has remained controversial. A set of black shales deposited in the Longmaxi Formation …

cn (code pays fourni par la source)

Densification, microstructure, mechanical properties, and thermal stability of high-strength Ti-modified Al-Si-Mg-Zr aluminum alloy fabricated by laser-powder bed fusion

Yaoxiang Geng, Zhifa Shan, Jiaming Zhang, Zhijie Zhang

cn (code pays fourni par la source)

Identifying influential vertices with top- K largest temporal katz centralities in a streaming graph using constant memory

Jiaming Zhang, Qingjun Xiao, Jun Ma, Liukun He et autres

In graph theory, Katz centrality is a widely used measure to quantify the influence of a vertex within a network. Unlike simple degree centrality, it considers not only immediate neighbors but also multi-hop directed paths, weighting them by length and inter-hop time …

cn (code pays fourni par la source)

CAVALRY-V: A Large-Scale Generator Framework for Adversarial Attacks on Video MLLMs

Jiaming Zhang, Rui Lin Hu, Qing Guo, Wei Yang Bryan Lim

Video Multimodal Large Language Models (V-MLLMs) have shown impressive capabilities in temporal reasoning and cross-modal understanding, yet their vulnerability to adversarial attacks remains underexplored due to unique challenges: complex cross-modal reasoning mechanisms, temporal dependencies, and computational constraints. We present CAVALRY-V (Cross-modal Language-Vision …

Task-Sequencing Optimization Using DSSA Algorithm for AUV with Limited Endurance

Qixin Sha, Jiaming Zhang, Yue Shen, Bo He

Efficiency is very important for robots when executing multiple tasks, especially for autonomous underwater vehicles (AUVs) with limited endurance. In order to improve efficiency, task-sequencing optimization, which focuses on achieving the optimal execution order of multiple tasks, is one effective way. In …

cn (code pays fourni par la source)

Safety at Scale: A Comprehensive Survey of Large Model Safety

Yu–Gang Jiang, Xingjun Ma, Yifeng Gao, Yixu Wang et autres

Abstract—The rapid advancement of large models, driven by their exceptional abilities in learning and generalization through large-scale pre-training, has reshaped the landscape of Artificial Intelligence (AI). These models are now foundational to a wide range of applications, including conversational AI, recommendation systems, …

The Characteristics of Differential Sedimentary Filling Under the Activity of Boundary Faults in Continental Faulted Lake Basins

Xuntao Yu, Jiaxue Pei, Bo Ran, Yunlong Fu et autres

cn (code pays fourni par la source)

High-Temperature Strain Gauge Measurement Techniques for Temperatures Above 800 °C: A Review

Wenrui Wang, Rui Long Zong, Dongyue Li, Jiaming Zhang et autres

Pre-study tests and strain measurements of critical structural components in high-temperature environments are paramount. In the field of high-temperature strain measurement, the contact strain measurement method has the widest application range, a high measurement accuracy, and a low cost. At present, a …

cn (code pays fourni par la source)

A Survey of Approximation Algorithms for the Universal Facility Location Problem

Jiaming Zhang, Zhikang Zhang, Weidong Li

The facility location problem is a classical combinatorial optimization problem with extensive applications spanning communication technology, economic management, traffic governance, and public services. The facility location problem is to assign a set of clients to a set of facilities such that each …

cn (code pays fourni par la source)

A LP-rounding based algorithm for soft capacitated facility location problem with submodular penalties

Jiaming Zhang, Zhikang Zhang, Weidong Li

The soft capacitated facility location problem (SCFLP) is a classic combinatorial optimization problem, with its variants widely applied in the fields of operations research and computer science. In the SCFLP, given a set $\mathcal{F}$ of facilities and a set $\mathcal{D}$ of clients, …