Scholars@Duke
Yehua Wei

Yehua Wei

Professor of Business Administration
Fuqua School of Business

Scholarly Works - Journal articles

Online Demand Fulfillment Problem with Initial Inventory Placement: A Regret Analysis

Journal article Operations Research · May 1, 2026 We study a joint inventory placement and online fulfillment model. In the beginning, the inventory is distributed to different warehouses. At each subsequent period, an order arrives from one of the demand regions, and the decision maker makes an irrevocab ... Full text Cite

Physical Metallurgy and Mechanical Properties of Ultrahigh Strength Steels

Journal article steel research international · March 2026 Ultrahigh strength steels (UHSSs) are crucial for heavy load‐bearing components in aerospace and automotive applications, such as aircraft landing gears, crankshafts, and fasteners. This review presents recent advancements in various categories of ... Full text Cite

Does the deepening of digital trade rules improve GVC positioning?– A product-level analysis

Journal article Chinese Management Studies · February 17, 2026 PurposeThe purpose of this paper is to examine the impact of deepening digital trade rules on the host country’s position in global value chains (GVCs) of partner countrie ... Full text Cite

Thickness-Dependent Creep in Lithium Layers of All-Solid-State Batteries under Stack Pressures.

Journal article Advanced science (Weinheim, Baden-Wurttemberg, Germany) · January 2026 Stack pressure is broadly explored in improving contact at the lithium metal-solid-state electrolyte interface of all-solid-state lithium-metal batteries (ASSLBs). The effectiveness of this procedure relies heavily on the time-dependent accommodation of li ... Full text Cite

Machine learning revealed force-stress-fatigue damage correlation of high-speed train bogies

Journal article Science China Physics, Mechanics & Astronomy · January 2026 Full text Cite

<i>Candida albicans</i> Extracellular Vesicles Upregulate Nrg1 Transcription Repressor to Inhibit Self-Hyphal Development and Candidemia.

Journal article International journal of molecular sciences · January 2026 Candida albicans is the most prevalent opportunistic pathogenic fungus in humans, and its extracellular vesicles (EVs) play crucial roles in its growth and pathogenesis. Previously, we found that C. albicans EVs at low levels could promote it ... Full text Cite

Multi-Item Order Fulfillment Revisited: LP Formulation and Prophet Inequality

Journal article Management Science · December 2025 In this work, we revisit the multi-item order fulfillment model introduced by Jasin and Sinha (2015). Specifically, we study a dynamic setting in which an e-commerce platform (or online retailer) with multiple warehouses and finite inventory faces ... Full text Cite

A virtual element framework for inelastic contact involving multiple bodies

Journal article International Journal of Mechanical Sciences · December 2025 Full text Cite

An energy-based virtual element method framework for polycrystalline plasticity

Journal article Computer Methods in Applied Mechanics and Engineering · November 2025 Full text Cite

Elastic fields of surface steps and notches and associated cracks

Journal article Engineering Fracture Mechanics · November 2025 Full text Cite

Understanding Degradation and Enhancing Cycling Stability for High‐Voltage LiCoO2‐Based Li‐Metal Batteries

Journal article Advanced Energy Materials · May 2025 AbstractImproving the energy density of Lithium (Li)‐ion batteries (LIBs) is vital in meeting the growing demand for high‐performance energy storage and conversion systems. Developing high‐voltage LIBs using high‐capacity a ... Full text Cite

Interfacial Stress Transfer and Fracture in van der Waals Heterostructures.

Journal article Advanced materials (Deerfield Beach, Fla.) · November 2024 Artificially stacking 2D materials (2DMs) into vdW heterostructures creates materials with properties not present in nature that offer great potential for various applications such as flexible electronics. Properties of such stacked structures are controll ... Full text Cite

The failure behavior of syntactic foams as buoyancy materials for deepsea applications

Journal article European Journal of Mechanics - A/Solids · May 2024 Full text Cite

Service Networks With Open Routing and Procedurally Rational Customers

Journal article Production and Operations Management · February 1, 2024 Self-interested customers’ form of reasoning and its consequences for system performance affect the planning decisions of service providers. We study procedurally rational customers—customers who make decisions based on a sample containing anecdotes of the ... Full text Cite

A semi-analytical solution to the stress intensity factors of branched cracks

Journal article Journal of the Mechanics and Physics of Solids · October 2023 Full text Cite

三维蜂窝碳的研究进展综述：性能和应用

Journal article SCIENTIA SINICA Physica, Mechanica & Astronomica · October 1, 2023 Full text Cite

Maneuver Decision-Making through Automatic Curriculum Reinforcement Learning without Handcrafted Reward Functions

Journal article Applied Sciences · August 19, 2023 Maneuver decision-making is essential for autonomous air combat. However, previous methods usually make decisions to aim at the target instead of hitting the target and use discrete action spaces instead of continuous action spaces. While these sim ... Full text Cite

Assemble-to-order systems

Journal article · August 15, 2023 Cite

Approximate Submodularity in Network Design Problems

Journal article Operations Research · July 1, 2023 Network design problems, such as flexibility design, are ubiquitous in modern marketplaces where firms constantly innovate new ways to match supply and demand. We develop a primal-dual based approach to analyze the flexibility design problem, and establish ... Full text Cite

The Operation Dependence of C − N Fatigue for Lithium‐Ion Batteries

Journal article Advanced Energy Materials · July 2023 AbstractLithium‐ion batteries (LIBs) fatigue in repeated service, and their cycle‐life, in resemblance to most materials subject to cyclic loading, scatters over a broad range. The dependence of critical fatigue parameters ... Full text Cite

Constant Regret Primal-Dual Policy for Multi-way Dynamic Matching

Journal article Performance Evaluation Review · June 19, 2023 We study a discrete-time dynamic multi-way matching model. There are finitely many agent types that arrive stochastically and wait to be matched. State-of-the-art dynamic matching policies in the literature require the knowledge of all system parameters to ... Full text Cite

A New Approach for Vehicle Routing with Stochastic Demand: Combining Route Assignment with Process Flexibility

Journal article Operations Research · September 1, 2022 We propose a new approach for the vehicle routing problem with stochastic customer demands revealed before vehicles are dispatched. We combine ideas from vehicle routing and manufacturing process flexibility to propose overlapped routing strategies with cu ... Full text Cite

Large-area transfer of two-dimensional materials free of cracks, contamination and wrinkles via controllable conformal contact.

Journal article Nature communications · July 2022 The availability of graphene and other two-dimensional (2D) materials on a wide range of substrates forms the basis for large-area applications, such as graphene integration with silicon-based technologies, which requires graphene on silicon with outperfor ... Full text Cite

Interface Aspects in All‐Solid‐State Li‐Based Batteries Reviewed

Journal article Advanced Energy Materials · April 2021 AbstractExtensive efforts have been made to improve the Li‐ionic conductivity of solid electrolytes (SE) for developing promising all‐solid‐state Li‐based batteries (ASSB). Recent studies suggest that min ... Full text Cite

Fatigue endurance limit and crack front evolution in metallic glass

Journal article International Journal of Fatigue · February 2021 Full text Cite

A multi-scale algorithm for dislocation creep at elevated temperatures

Journal article Theoretical and Applied Mechanics Letters · January 2021 Full text Cite

Large Single-Crystal Cu Foils with High-Index Facets by Strain-Engineered Anomalous Grain Growth.

Journal article Advanced materials (Deerfield Beach, Fla.) · July 2020 The rich and complex arrangements of metal atoms in high-index metal facets afford appealing physical and chemical properties, which attracts extensive research interest in material science for the applications in catalysis and surface chemistry. However, ... Full text Cite

Statistical analysis on rolling contact fatigue in railroad axle bearing steel

Journal article Fatigue & Fracture of Engineering Materials & Structures · March 2019 AbstractHigh‐strength steels are widely used in high‐performance bearings utilized in most mechanical systems. However, there has been little statistical analysis regarding the fatigue failure behaviour of the material, whe ... Full text Cite

Strategic open routing in service networks

Journal article Management Science · February 1, 2019 We study the behavior of strategic customers in an open-routing service network with multiple stations. When a customer enters the network, she is free to choose the sequence of stations that she visits, with the objective of minimizing her expected total ... Full text Cite

Process flexibility for multiperiod production systems

Journal article Operations Research · January 1, 2019 We develop a theory for the design of process flexibility in a multiperiod maketo-order production system. We propose and formalize a notion of "effective chaining" termed the generalized chaining gap (GCG), which can be viewed as a natural extension of cl ... Full text Cite

Anisotropic expansion and size-dependent fracture of silicon nanotubes during lithiation

Journal article Journal of Materials Chemistry A · 2019 Experiments and simulations demonstrate anisotropic expansion and size-dependent fracture of silicon nanotubes during initial lithiation of well-designed nanotube arrays. ... Full text Cite

Constraint Generation for Two-Stage Robust Network Flow Problems

Journal article INFORMS Journal on Optimization · January 2019 In this paper, we propose new constraint generation (CG) algorithms for solving the two-stage robust minimum cost flow problem, a problem that arises from various applications such as transportation and logistics. To develop efficient algorithms u ... Full text Cite

Unconventional Deformation Behaviours of Nanoscaled High-Entropy Alloys.

Journal article Entropy (Basel, Switzerland) · October 2018 The bulk high-entropy alloys (HEAs) exhibit similar deformation behaviours as traditional metals. These bulk behaviours are likely an averaging of the behaviours exhibited at the nanoscale. Herein, in situ atomic-scale observation of deformation behaviours ... Full text Cite

Fast Growth of Strain-Free AlN on Graphene-Buffered Sapphire.

Journal article Journal of the American Chemical Society · September 2018 We study the roles of graphene acting as a buffer layer for growth of an AlN film on a sapphire substrate. Graphene can reduce the density of AlN nuclei but increase the growth rate for an individual nucleus at the initial growth stage. This can lead to th ... Full text Cite

Increasing Supply Chain Robustness through Process Flexibility and Inventory

Journal article Production and Operations Management · August 1, 2018 We study a hybrid strategy that uses both process flexibility and finished goods inventory for supply chain risk mitigation. The interplay between process flexibility and inventory is modeled as a two-stage robust optimization problem. In the first stage, ... Full text Cite

An adaptive O(log n)-optimal policy for the online selection of a monotone subsequence from a random sample

Journal article Random Structures and Algorithms · January 1, 2018 Given a sequence of n independent random variables with common continuous distribution, we propose a simple adaptive online policy that selects a monotone increasing subsequence. We show that the expected number of monotone increasing selections made by su ... Full text Open Access Cite

Cryogenic temperature toughening and strengthening due to gradient phase structure

Journal article Materials Science and Engineering: A · January 2018 Full text Cite

Corrigendum: Dislocation Strengthening without Ductility Trade-off in Metastable Austenitic Steels.

Journal article Scientific reports · January 2018 This corrects the article DOI: 10.1038/srep35345. ... Full text Cite

Wrinkle-Free Single-Crystal Graphene Wafer Grown on Strain-Engineered Substrates.

Journal article ACS nano · December 2017 Wrinkles are ubiquitous for graphene films grown on various substrates by chemical vapor deposition at high temperature due to the strain induced by thermal mismatch between the graphene and substrates, which greatly degrades the extraordinary properties o ... Full text Cite

Theory on Bending in Cantilever Beams With Adsorbed Islands

Journal article Journal of Applied Mechanics · July 1, 2017 Traction between adsorbed islands and the substrate is commonly seen in both living and material systems: deposited material gathers into islands at the early stage of polycrystalline film deposition and generates stress due to lattice mismatch, ce ... Full text Cite

Geometric design of micron-sized crystalline silicon anodes through in situ observation of deformation and fracture behaviors

Journal article Journal of Materials Chemistry A · 2017 The whole failure process of micron-sized crystalline silicon anodes was in situ observed, and novel anisometric–hollow microstructures enhance the electrochemical performance ... Full text Cite

Super-stretchable borophene

Journal article EPL (Europhysics Letters) · November 1, 2016 Full text Cite

Dislocation Strengthening without Ductility Trade-off in Metastable Austenitic Steels.

Journal article Scientific reports · October 2016 Strength and ductility are mutually exclusive if they are manifested as consequence of the coupling between strengthening and toughening mechanisms. One notable example is dislocation strengthening in metals, which invariably leads to reduced ductility. Ho ... Full text Cite

The influence of crack-orientation distribution on the mechanical properties of pre-cracked brittle media

Journal article International Journal of Solids and Structures · October 2016 Full text Cite

Analyzing process flexibility: A distribution-free approach with partial expectations

Journal article Operations Research Letters · May 1, 2016 We develop a distribution-free model to evaluate the performance of process flexibility structures when only the mean and partial expectation of the demand are known. We characterize the worst-case demand distribution under general concave objective functi ... Full text Cite

Sparse process flexibility designs: Is the long chain really optimal?

Journal article Operations Research · March 1, 2016 Sparse process flexibility and the long chain have become important concepts in design flexible manufacturing systems. In this paper, we study the performance of the long chain in comparison to all designs with at most 2n edges over n supply and n demand n ... Full text Cite

Strength gradient enhances fatigue resistance of steels.

Journal article Scientific reports · February 2016 Steels are heavily used in infrastructure and the transportation industry, and enhancing their fatigue resistance is a major challenge in materials engineering. In this study, by introducing a gradient microstructure into 304 austenitic steel, which is one ... Full text Cite

Heterogeneous lamella structure unites ultrafine-grain strength with coarse-grain ductility.

Journal article Proceedings of the National Academy of Sciences of the United States of America · November 2015 Grain refinement can make conventional metals several times stronger, but this comes at dramatic loss of ductility. Here we report a heterogeneous lamella structure in Ti produced by asymmetric rolling and partial recrystallization that can produce an unpr ... Full text Cite

Microfluidic Synthesis of Hybrid Nanoparticles with Controlled Lipid Layers: Understanding Flexibility-Regulated Cell-Nanoparticle Interaction.

Journal article ACS nano · October 2015 The functionalized lipid shell of hybrid nanoparticles plays an important role for improving their biocompatibility and in vivo stability. Yet few efforts have been made to critically examine the shell structure of nanoparticles and its effect on cell-part ... Full text Cite

Retailing with Opaque Products

Journal article · September 11, 2015 Cite

Identifying risks and mitigating disruptions in the automotive supply chain

Journal article Interfaces · September 1, 2015 Firms are exposed to a variety of low-probability, high-impact risks that can disrupt their operations and supply chains. These risks are difficult to predict and quantify; therefore, they are difficult to manage. As a result, managers may suboptimally dep ... Full text Cite

Griffith criterion for brittle fracture in graphene.

Journal article Nano letters · March 2015 There are prevailing concerns with the critical dimensions when conventional theories break down. Here we find that the Griffith criterion remains valid for cracks down to 10 nm but overestimates the strength of shorter cracks. We observe the preferred cra ... Full text Cite

Tunable rigidity of (polymeric core)-(lipid shell) nanoparticles for regulated cellular uptake.

Journal article Advanced materials (Deerfield Beach, Fla.) · February 2015 Core-shell nanoparticles (NPs) with lipid shells and varying water content and rigidity but with the same chemical composition, size, and surface properties are assembled using a microfluidic platform. Rigidity can dramatically alter the cellular uptake ef ... Full text Cite

Worst-case analysis of process flexibility designs

Journal article Operations Research · January 1, 2015 Theoretical studies of process flexibility designs have mostly focused on expected sales. In this paper, we take a different approach by studying process flexibility designs from the worst-case point of view. To study the worst-case performances, we introd ... Full text Cite

Evading the strength-ductility trade-off dilemma in steel through gradient hierarchical nanotwins.

Journal article Nature communications · April 2014 The strength-ductility trade-off has been a long-standing dilemma in materials science. This has limited the potential of many structural materials, steels in particular. Here we report a way of enhancing the strength of twinning-induced plasticity steel a ... Full text Cite

From superstorms to factory fires: Managing unpredictable supply-chain disruptions

Journal article Harvard Business Review · January 1, 2014 Cite

Mechanisms of anisotropic friction in nanotwinned Cu revealed by atomistic simulations

Journal article Modelling and Simulation in Materials Science and Engineering · September 1, 2013 Full text Cite

Bending rigidity and Gaussian bending stiffness of single-layered graphene.

Journal article Nano letters · January 2013 Bending rigidity and Gaussian bending stiffness are the two key parameters that govern the rippling of suspended graphene-an unavoidable phenomenon of two-dimensional materials when subject to a thermal or mechanical field. A reliable determination about t ... Full text Cite

The nature of strength enhancement and weakening by pentagon-heptagon defects in graphene.

Journal article Nature materials · September 2012 The two-dimensional crystalline structures in graphene challenge the applicability of existing theories that have been used for characterizing its three-dimensional counterparts. It is crucial to establish reliable structure-property relationships in the i ... Full text Cite

A side-by-side comparison of Daya Bay antineutrino detectors

Journal article Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment · September 2012 Full text Cite

Understanding the performance of the long chain and sparse designs in process flexibility

Journal article Operations Research · September 1, 2012 The long chain has been an important concept in the design of flexible processes. This design concept, as well as other sparse designs, have been applied by the automotive and other industries as a way to increase flexibility in order to better match avail ... Full text Cite

Belief propagation for min-cost network flow: Convergence and correctness

Journal article Operations Research · March 1, 2012 Distributed, iterative algorithms operating with minimal data structure while performing little computation per iteration are popularly known as message passing in the recent literature. Belief propagation (BP), a prototypical message-passing algorithm, ha ... Full text Cite

Twin boundary spacing-dependent friction in nanotwinned copper

Journal article Physical Review B · February 13, 2012 Full text Cite

Failure criterion for metallic glasses

Journal article Philosophical Magazine · December 21, 2011 Full text Cite

Continuum modeling of the response of a Mg alloy AZ31 rolled sheet during uniaxial deformation

Journal article International Journal of Plasticity · November 2011 Full text Cite

Surfactant-induced postsynthetic modulation of Pd nanoparticle crystallinity.

Journal article Nano letters · April 2011 Modulation of Pd nanoparticle (NP) crystallinity is achieved by switching the surfactants of different binding strengths. Pd NPs synthesized in the presence of weak binding surfactants such as oleylamine possess polyhedral shapes and a polycrystalline natu ... Full text Cite

Belief propagation for min-cost network flow: Convergence & correctness

Journal article Proceedings of the Annual ACM SIAM Symposium on Discrete Algorithms · January 1, 2010 We formulate a Belief Propagation (BP) algorithm in the context of the capacitated minimum-cost network flow problem (MCF). Unlike most of the instances of BP studied in the past, the messages of BP in the context of this problem are piecewise-linear funct ... Full text Cite

A criterion for the half-plane property

Journal article Discrete Mathematics · April 6, 2009 We establish a convenient necessary and sufficient condition for a multiaffine real polynomial to be stable, and use it to verify that the half-plane property holds for seven small matroids that resisted the efforts of Choe, Oxley, Sokal, and Wagner [Y.-B. ... Full text Cite