Operations and Supply Chain Management Commons^™

Risk Management For Semiconductor Manufacturing Equipment Suppliers Within Rapid Changing International Environment: An Empirical Study, Youbing Cao

Dissertations and Theses Collection (Open Access)

Semiconductors, as a key upstream component in the electronics and information industries, have attracted global attention from nations and corporations due to their vast market values. The emergence of global semiconductor supply chains has fostered specialized industrial divisions, such as semiconductor materials, semiconductor manufacturing equipment, and semiconductor fabrication. While China’s semiconductor industry holds certain global market shares across various sectors, it still lags in advanced technologies and high-end markets. Since 2018, the United States has imposed increasing tariffs and export restrictions on many Chinese firms (known as the US-China trade war) to prevent technology outflows, leading to substantial uncertainties that …

Designing Pull-Based Energy System Rules For Public Buildings: An Application Of Modularity, Lei Wang

Dissertations and Theses Collection (Open Access)

Building energy systems, particularly Heating, Ventilation, and Air Conditioning (HVAC) systems, play a pivotal role in global sustainability efforts. Yet, traditional centralized HVAC systems continue to face major challenges: high energy consumption, significant operational costs, and limited adaptability to dynamic energy demands. These inefficiencies are compounded by the difficulty of integrating renewable energy sources into outdated system designs. As a result, substantial energy waste persists, posing obstacles to cost-effective, environmentally sustainable building operations.

This dissertation proposes a modular, pull-based energy framework to address these critical challenges. By combining the principles of modularity theory with demand-driven energy distribution, the framework enables …

How Can Foreign Commercial Vehicle Manufacturers Succeed In India?, Debjit Roy, Shubham

Asian Management Insights

Seven steps to achieve market entry based on lessons from recent market exits. New entrants need to tailor their trucks for India's geography, infrastructure, and conditions to improve acceptability and market share. Boost demand by building an export-driven business model in India to counter the threat from inadequate and stagnant domestic demand. Align service offerings with customer expectations to gain greater vehicle acceptability.

Competitive Advantage Of Short Food Supply Chains For Organic Vegetables In India: A Multi-Stakeholder, Mixed Method Study Of Farmers, Consumers And Intermediaries, Bhoovarahan Thirumalai Nambakkam

Dissertations and Theses Collection (Open Access)

Competitive advantage of Short Food Supply Chains for organic vegetables in India – a multi-stakeholder, mixed method study of farmers, consumers and intermediaries.

Short food supply chains (SFSC) are characterized by one (or zero) intermediaries (structural proximity), short distance (geographic proximity), trusted relationships (relationship proximity) and alignment of values (values proximity) between consumers and farmers.

This multi-method case study investigates proximity of SFSCs as a driver for increased willingness to pay (WTP) by consumers for organic vegetables in a global south developing country - India. The study analyzed revealed preference (published prices of a conventional chain and SFSCs), stated preference …

Trade War And The Reshaping Of Global Supply Chain In The Automotive Industry, Feng Wang

Dissertations and Theses Collection (Open Access)

The China-US trade war disrupted nearly half a century of trade liberalization, impacting the global distribution of production and the configuration of supply chains. This paper focuses on automobile production and tire supply to analyze the impact of industrial layout changes during the China-US trade war on the global supply chain structure. The study finds that for US automobile production, the trade war presents both positive and negative effects. While tariffs on automobiles protect the local automotive market, the increased production costs due to tariffs on components place US-made cars at a competitive disadvantage in the global market, negatively affecting …

Research On The Implementation Path Of Digital Transformation In Manufacturing Enterprises: A Case Study Of An Aluminum Deep Processing Company, Yanhong Zhang

Dissertations and Theses Collection (Open Access)

Currently, the internal conditions and external environment for the development of China’s manufacturing industry are undergoing profound and complex changes, and face new opportunities and challenges. In this context, why do manufacturing enterprises need to urgently carry out digital transformation, and the motivations, paths, values and criteria for the success for digital transformation all need to be systematically analyzed and studied?

This paper takes a certain aluminum deep-processing company as an example, focusing on the development strategies of digital transformation in the manufacturing industry. A maturity model of digital transformation for aluminum deep-processing company is constructed through literature research, qualitative …

Risk Spillover Effect Of China-Asean Supply Chains: Insights Of Industrial Transfer, Zeyang Bian, Yuning Zhang, Keng Siau, Yaqian Zhang, Jianjia He

Research Collection School Of Computing and Information Systems

As labour costs in China increase, labour-intensive industries are migrating to ASEAN countries, attracted by lower labour costs and market potential. This shift not only affects the economies of China and ASEAN but also reshapes the global manufacturing landscape. This paper investigates the correlation and spillover of supply chain risks using production exposure indicators derived from inter-country input-output data and the R-Vine Copula model. We assess the risk spillover of each country within the global supply chain. Our findings indicate that industrial relocation can significantly alter supply chain structures, thereby affecting the concentration and direction of risks. While China's role …

Corporate Disclosures For Green Supply Chains: Evidence From Scope 3 Emissions Disclosure, Young Jun Cho, Jungbae Kim, Holly I. Yang, Mengjie Yang

Research Collection School Of Accountancy

A firm's decision to initiate Scope 3 emissions disclosure not only reflects their sustainability efforts but also signals their commitment to decarbonizing its value chain, fostering collaboration among suppliers in promoting greener supply chains. Using a generalized difference-in-differences research design, we find that suppliers reduced greenhouse gas emissions following their customers’ initiation of Scope 3 emissions disclosures. This reduction in emissions is more pronounced when the supplier poses greater climate risk and when the customer has a greater need to restore public trust for its climate-related behavior. We also find that this effect varies with the strength of the customer-supplier …

Regulating Adaptive Medical Artificial Intelligence: Can Less Oversight Lead To Greater Compliance?, Jiayi Lai, Liang Xu, Xin Fang, Tinglong Dai

Research Collection Lee Kong Chian School Of Business

As of June 2024, the U.S. Food and Drug Administration (FDA) has approved 950 medical artificial intelligence (AI) devices. The current regulatory framework freezes AI algorithms after approval, requiring new submissions for updates to ensure compliance with Good Machine Learning Practices (GMLP). This approach imposes a significant administrative burden, while hindering the ability of AI algorithms to learn from new data. To address these challenges, the FDA has explored a novel pathway known as Predetermined Change Control Plans (PCCP), allowing developers to outline future changes during initial submissions and exempting approved changes from regulatory review. Yet, the impact of this …

Strategic Cross-Subsidization In Healthcare Capitation Programs: Evidence From Medicare Advantage, Zhaowei She, Turgay Ayer, Bilal Gokpinar, Danny R. Hughesd

Research Collection Lee Kong Chian School Of Business

Problem definition: : This study identifies a resource misallocation problem in Medicare Advantage (MA), the United States' largest healthcare capitation program, which may result in discrepancies between patients' health status and the healthcare resources allocated to them. Methodology/results: : Utilizing a large commercial insurance database with claims from more than 2 million MA enrollees, this research investigates the allocation of MA capitation payments. By exploiting an exogenous policy shock on MA capitation payments through a difference-in-difference design, we find empirical evidence of an illegal practice known as "cross-subsidization." This practice involves MA health plans strategically reallocating portions of the capitation …

Appointment Scheduling With Delay Tolerance Heterogeneity, Shuming Wang, Jun Li, Marcus Ang, Tsan Sheng Ng

Research Collection Lee Kong Chian School Of Business

In this study, we investigate an appointment sequencing and scheduling problem with heterogeneous user delay tolerances under service-time uncertainty. We aim to capture the delay-tolerance effect with heterogeneity, in an operationally effective and computationally tractable fashion, for the appointment scheduling problem. To this end, we first propose a Tolerance-Aware Delay (TAD) index that incorporates explicitly the user-tolerance information in delay evaluation. We show that the TAD index enjoys decision-theoretical rationale in terms of Tolerance Sensitivity, Monotonicity, Convexity and Positive Homogeneity, which enables it to incorporate the frequency and intensity of delays over the tolerance in a coherent manner. Specifically, the …

An Exponential Cone Programming Approach For Managing Electric Vehicle Charging, Li Chen, Long He, Yangfang (Helen) Zhou

Research Collection Lee Kong Chian School Of Business

To support the rapid growth in global electric vehicle adoption, public charging of electric vehicles is crucial. We study the problem of an electric vehicle charging service provider, which faces (1) stochastic arrival of customers with distinctive arrival and departure times, and energy requirements as well as (2) a total electricity cost including demand charges, costs related to the highest per-period electricity used in a finite horizon. We formulate its problem of scheduling vehicle charging to minimize the expected total cost as a stochastic program (SP). As this SP is large-scale, we solve it using exponential cone program (ECP) approximations. …

The Downstream Impact Of Upstream Tariffs: Evidence From Investment Decisions In Supply Chains, Thorsten Martin, Clemens A. Otto

Research Collection Lee Kong Chian School Of Business

We study how US manufacturing firms' investment responds to tariff reductions in supplier industries. Our estimates, based on tariff reductions following multinational trade agreements, suggest that a hypothetical 10% reduction of all upstream tariffs would increase downstream investment by 4% to 6%. This estimate is not explained by decreasing uncertainty and stems from tariff reductions for homogeneous and low-R\&D inputs, consistent with the investment response resulting from cost reductions rather than superior foreign technology embodied in imported inputs. Evidence from an instrumental variable estimation using the sudden increase in Chinese import penetration suggests that import competition also increases downstream investment.

Optimal Policies And Heuristics To Match Supply With Demand For Online Retailing, Qiyuan Deng, Xiaobo Li, Yun Fong Lim, Fang Liu

Research Collection Lee Kong Chian School Of Business

Problem definition: We consider an online retailer selling multiple products to different zones over a finite horizon with multiple periods. At the start of the horizon, the retailer orders the products from a single supplier and stores them at multiple warehouses. The retailer determines the products’ order quantities and their storage quantities at each warehouse subject to its capacity constraint. At the end of each period, after random demands in the period are realized, the retailer chooses the retrieval quantities from each warehouse to fulfill the demands of each zone. The objective is to maximize the retailer’s expected profit over …

The Impact Of Organizational Dynamic Capability On Collaborative Innovation: A Supply Chain Perspective, Xiangdong Wang

Dissertations and Theses Collection (Open Access)

Innovation capability is one of the most important competitive advantages of the firms, and fully collaborating with partners in the supply chain to form an innovation alliance has been proven can effectively promote the firm’s innovation performance. This research apply case study on China sportswear supply chain with a mixed method, aims to disclose the innovation Black-box and reveal the influencing factors and its mechanism. The study consists of two parts, Study 1 is semi-structured interviews with 32 industry experts, through the analysis of the interview records, we figured out what factors the industry experts believe it can improve the …

Business Model Choice For Heavy Equipment Manufacturer, Philippe Blaettchen, Niyazi Taneri, Sameer Hasija

Research Collection Lee Kong Chian School Of Business

Technological advances enable new business models for heavy equipment manufacturers wherein customers access equipment without ownership. We seek to understand the profitability and environmental performance of different emerging business models in light of salient economic and operational factors. We develop a game-theoretic model to identify the optimal choice between a traditional ownership-based business model and two access-based models: servicization and peer-to-peer sharing. After-sales services, equipment characteristics, usage environments, and fuel prices affect this choice. We also provide a novel framework to analyze business models’ environmental impact, which incorporates trade-offs between economic value and environmental costs and shows that all models …

Locking In Overseas Buyers Amid Geopolitical Conflicts, Di Fan, Pengcheng Ma, Lin Cui, Daphne W. Yiu

Research Collection Lee Kong Chian School Of Business

Geopolitical conflicts, particularly economic ones, introduce significant uncertainties into the global supply chain. The impact of these conflicts on cross-border buyer-supplier transactions remains underexplored, as does the capability of global suppliers to mitigate such risks by locking in their foreign buyers. Employing a combined perspective of resource dependence theory and transaction cost economics, we examine a natural experiment to investigate the effects of the 2018 U.S.-China trade war on the transactional relationships between Chinese suppliers and their U.S. buyers. Our study reveals that the trade war generally adversely affected these buyer-supplier transactional relationships, leading to a negative abnormal transaction value …

Design Of Off-Grid Lighting Business Models To Serve The Poor: Field Experiments And Structural Analysis, Bhavani Shanker Uppari, Serguei Netessine, Ioana Popescu, Rowan P. Clarke

Research Collection Lee Kong Chian School Of Business

A significant proportion of the world’s population has no access to grid-based electricity and so relies on off-grid lighting solutions. Rechargeable lamp technology is gaining popularity as an alternative off-grid lighting model in developing countries. In this paper, we explore consumer behavior and the operational inefficiencies that result under this model. Specifically, we are interested in (i) measuring the impact of inconvenience (of travelling to recharge the lamp) along with the impact of liquidity constraints (due to poverty) on lamp usage, and (ii) evaluating the efficacy of strategies that address these factors. We build a structural model of consumers’ recharge …

Traceability Technology Adoption In Supply Chain Networks, Philippe Blaettchen, Andre P. Calmon, Georgina Hall

Research Collection Lee Kong Chian School Of Business

Modern traceability technologies promise to improve supply chain management by simplifying recalls, increasing visibility, and verifying sustainable supplier practices. Initiatives leading the implementation of traceability technologies must choose the least-costly set of firms—or seed set—to target for early adoption. Choosing this seed set is challenging because firms are part of supply chains interlinked in complex networks, yielding an inherent supply chain effect: benefits obtained from traceability are conditional on technology adoption by a subset of firms in a product’s supply chain. We prove that the problem of selecting the least-costly seed set in a supply chain network is hard to …

Association Between Hba1c And Deep Sternal Wound Infection After Coronary Artery Bypass: A Systematic Review And Meta-Analysis, Wenyu Zhao, Jingui Xie, Zhichao Zheng, Han Zhou, Oon Cheong Ooi, Haidong Luo

Research Collection Lee Kong Chian School Of Business

Background: Deep sternal wound infection (DSWI) constitutes a serious complication after coronary artery bypass grafting (CABG) surgery. The aim of this study is to evaluate the dose-response relationship between glycated hemoglobin (HbA1c) level and the risk of DSWI after CABG. Methods: PubMed, Scopus, and Cochrane Library databases were searched to identify potentially relevant articles. According to rigorous inclusion and exclusion criteria, fourteen studies including 15,570 patients were finally enrolled in our meta-analysis. Odds ratio (OR) with 95% confidence intervals (CIs) was used as the summary statistic. The robust-error meta-regression model was used to synthesize the dose-response relationship. Results: Our meta-analysis …

Managing The Personalized Order-Holding Problem In Online Retailing, Shouchang Chen, Zhenzhen Yan, Yun Fong Lim

Research Collection Lee Kong Chian School Of Business

Problem definition: A significant percentage of online consumers place consecutive orders within a short duration. To reduce the total order arrangement cost, an online retailer may consolidate consecutive orders from the same consumer. We investigate how long the retailer should hold the consumer’s orders before sending them to a third-party logistics provider (3PL) for processing. In this order-holding problem, we optimize the holding time to balance the total order arrangement cost and the potential delay in delivery. Methodology/results: We model the order-holding problem as a Markov Decision Process. We show that the optimal order-holding decisions follow a threshold-type policy that …

Maintaining Consistent Sustainability Performance Through Peaks In Last Mile Logistics: What Factors Most Influence The Maintenance Of Consistent Social And Environmental Sustainability Performance In Last Mile Logistics During Peak Periods? How Do These Factors Exercise This Influence?, Prashant Saran

Dissertations and Theses Collection (Open Access)

Last Mile Logistics (LML) is the final leg of the supply chain that gets the product to the chosen destination point of the end consumer. LML has been witnessing unprecedented growth driven by increasing urbanization and growth in e-commerce retail sales. The impact of the rapid growth of LML is being witnessed both in the social and environmental dimensions, making social and environmental sustainability (S&ES) of LML an impactful area of research. LML deliveries driven by e-commerce also experience multiple demand peaks where the number of packages to be delivered spikes significantly over a short period of a few days …

Stopping The Revolving Door: Mdp-Based Decision Support For Community Corrections Placement, Xiaoquan Gao, Pengyi Shi, Nan Kong

Research Collection Lee Kong Chian School Of Business

Community corrections (CC) programs offer an alternative to incarceration that can reduce jail overcrowding and recidivism rates. The aim is to address the root causes behind criminal behavior, ultimately breaking the cycle of reincarceration. However, placing all eligible individuals in CC may strain case managers, resulting in reduced supervision, increased violations, and higher recidivism rates, which undermines the intended benefits for all participants in the programs. We take the first step in building a comprehensive analytical framework based on a queueing system to support the placement decisions and related decisions such as capacity planning. We develop a Markov Decision Process …

Effect Of The Announcement Of Human-To-Human Transmission On Teleconsultation Services In China During Covid-19, Mairehaba Maimaitiming, Jingui Xie, Zhichao Zheng, Yongjian Zhu

Research Collection Lee Kong Chian School Of Business

Objectives: Telemedicine enables patients to communicate with physicians effectively, especially during the coronavirus disease (COVID-19) pandemic. However, few studies have explored the use of online health care platforms for a comprehensive range of specialties during the COVID-19 pandemic. This study aimed to investigate how telemedicine services were affected by the announcement of human-to-human transmission in China. Methods: Telemedicine data from haodf.com in China were collected. A difference-in-differences analysis compared the number of telemedicine use and the number of active online physicians for different specialties in 2020 with the numbers in 2019, before and after the announcement of human-to-human transmission. Results: …

Pricing Under Uncertainty: Forward And Option Pricing In Sports Markets, Preethika Sainam, Sridhar Balasubramanian, Shantanu Bhattacharya, Lin L. Ong

Research Collection Lee Kong Chian School Of Business

Tickets to popular elimination style tournaments (e.g., NFL Super Bowl) are expensive and scarce. Sports organizations sell these tickets well in advance of the final game. Fans hesitate to buy them because they are unsure about whether their favorite team will play in it. We present two alternatives to the current practice: consumer forwards and options. A fan pays a reserve price to secure her team-specific forward ticket. If that team makes it to the final game, the fan must (in the option case, has the choice to) pay an exercise price to purchase the ticket. If the team does …

Maximizing The Benefits Of An On-Demand Workforce: Fill Rate-Based Allocation And Coordination Mechanisms, Tao Lu, Zhichao Zheng, Yuanguang Zhong

Research Collection Lee Kong Chian School Of Business

Problem definition: With the rapid growth of the gig economy, on-demand staffing platforms have emerged to help companies manage their temporary workforce. This emerging business-to-business context motivates us to study a new form of supply chain coordination problem. We consider a staffing platform managing an on-demand workforce to serve multiple firms facing stochastic labor demand. Before demand realization, each individual firm can hire permanent employees, whereas the platform determines a compensation rate for potential on-demand workers. After knowing the realized demand, firms in need can request on-demand workers from the platform, and then, the platform operator allocates the available on-demand …

Deploying Business Ecosystems To Cope With Ecological Transformation, Arnoud De Meyer

Research Collection Lee Kong Chian School Of Business

At a time when businesses must innovate quickly and in support of sustainability, "going it alone" is no longer the most effective or efficient model. Business ecosystems – networks of companies, researchers and other stakeholders each involved in a given value chain – offer an effective route to companies seeking not only to find new advantages, but to drive wider systemic change. When innovation takes place through ecosystems, often, the results are faster to diffuse through an industry or value chain. To address needs of the ecological transformation like the transition to clean fuels, this is exactly what is needed; …

Dynamic Scheduling With Uncertain Job Types, Zuo-Jun Max Shen, Jingui Xie, Zhichao Zheng, Han Zhou

Research Collection Lee Kong Chian School Of Business

Uncertain job types can arise as a result of predictive or diagnostic inaccuracy in healthcare or repair service systems and unknown preferences in matching service systems. In this paper, we study systems with multiple types of jobs, in which type information is imperfect and will be updated dynamically. Each job has a prior probability of belonging to a certain type which may be predicted by data, models, or experts. A job can only be processed by the right machine, and a job assigned to the wrong machine must be rescheduled. More information is learned from the mismatch, and job type …

Smu Redefines Lifelong Learning With Innovative Stackable, Applied Industry Practice Master, Singapore Management University

SMU Press Releases and News

Singapore Management University (SMU) will soon introduce a new educational offering – Industry Practice Master programme (行业实践硕士课程) – through its professional training arm, SMU Academy. For a start, SMU Academy will offer the Industry Practice Master of Digital Economy with two track specialisations - Data Protection and Data Governance, and Digital Supply Chain and Intelligence. SMU is the first university in Singapore to launch a stackable postgraduate programme that focuses on practical application. The programme also stands out for its emphasis on flexible learning, personalised learning, integrated SMU-employer partnership, and experiential and work-based learning; furthermore, lifelong learning coaches will also …

Bayesian Optimization With Switching Cost: Regret Analysis And Lookahead Variants, Peng Liu, Haowei Wang, Wei Qiyu

Research Collection Lee Kong Chian School Of Business

Bayesian Optimization (BO) has recently received increasing attention due to its efficiency in optimizing expensive-to-evaluate functions. For some practical problems, it is essential to consider the path-dependent switching cost between consecutive sampling locations given a total traveling budget. For example, when using a drone to locate cracks in a building wall or search for lost survivors in the wild, the search path needs to be efficiently planned given the limited battery power of the drone. Tackling such problems requires a careful cost-benefit analysis of candidate locations and balancing exploration and exploitation. In this work, we formulate such a problem as …