Lei Guan

Beijing Institute of Technology | BIT · Department of Management Science and Logistics Management

In this research, we investigate a supply chain consisting of a downstream firm who purchases a component from an upstream firm and then transforms it into a final product. The downstream firm has a production capacity constraint and considers to raise capital from an investor through equity financing. The raised capital not only enables the downst...

Blockchain technology has attracted global attention for its ability to protect data security and traceability. It has driven the development of practical applications in various fields, namely management science, transport and logistics, and supply chain management. Initial coin offerings (ICOs), an emerging start-up fundraising method developed w...

We study the optimal product upgrades and rollover strategies of a risk-averse firm that is uncertain about future demand. For this purpose, we develop a two-period model based on whether the firm makes upgrading investments and if so which product rollover (solo or dual) strategy it adopts. Analysis of the equilibrium outcomes shows that if the fi...

Group‐buying price mechanism is useful for online sales since the 1990s, yet it has not been widely applied in the business‐to‐business (B2B) environment. In this study, we consider a B2B supply chain with one supplier and multiple retailers. With our analytical model, we compare the supplier's profit under the flat price mechanism, individual quan...

As one of the most popular forms of social e‐commerce, group‐buying price (GBP) is a widely used pricing mechanism. One typical example is PinDuoDuo, which was listed on the NASDAQ stock exchange in 2018. On the PinDuoDuo app, sellers generally encourage informed buyers to share information about products with uninformed buyers to increase sales vo...

An extended warranty is an additional service in the market that manufacturers and retailers provide for their customers. In this study, we investigate the optimal extended warranty strategies in a supply chain with a single manufacturer and a single retailer, and consider two single-channel models (the retailer solely provides the service, and the...

Reward-based crowdfunding is a new fund-raising method in sharing economy, and it can also be a powerful tool for companies to handle the time mismatch between money invested and revenue generated in Circular Economy (CE). While all-or-nothing (AON) mechanism and keep-it-all (KIA) mechanism are both used in crowdfunding projects, some websites star...

With the gradual improvement of living standards, people's consumption levels and habits are changing. One notable fact is that the demand for fresh products is growing steadily. Accordingly, fresh-product preservation and logistics distribution also require higher standards. Based on the practice of fresh domestic transport and preservation, for w...

We consider a new scheduling model where emergency jobs appear during the processing of current jobs and must be processed immediately after the present job is completed. All jobs have random processing times and should be completed on a single machine. The most common case of the model is the surgery scheduling problem, where some elective surgeri...

Group buying price (GBP) mechanism is a useful pricing mechanism in online selling. In this study, we focus on the case that buyers are small retailers, and there are two suppliers in the market. Retailers' ordering choice is discussed, and we also study how the supplier should set the GBP price curve. The conclusion shows that to beat the fixed pr...

Group-buying price is a new pricing mechanism originated from Internet bidding. It has been proved that, with this pricing mechanism, buyers’ cooperation in a B2C environment is beneficial for both the seller and buyers. The contribution of this paper is two-fold. First, we formally prove that, when buyers’ valuation on the product is transparent a...