We analyze how product line rivalry by multi-product oligopolists is affected by market size and product substitutability. We show that the width and degree of overlap in competing product lines is determined by the tension between two effects: the drive to “be where the demand is” and the desire to weaken competition and intra-firm product cannibalization. Product lines are shown to be wider a...

Large sunk cost of development, negligible cost of reproduction and distribution and substantial economies of scale make information goods distinct from industry goods. In this paper, we analyze versioning strategies of horizontally differentiated information goods with shared feature sets, discrete hierarchical groups and continuous individual consumer tastes. Based on our modelling results, w...

In response to hypertension, the heart manifests robust hypertrophic growth, which offsets load-induced elevations in wall stress. If sustained, this hypertrophic response is a major risk factor for systolic dysfunction and heart failure. Extensive research efforts have focused on the progression from hypertrophy to failure; however, precise understanding of underlying mechanisms remains elusiv...

Consumer reservation price is a key concept in marketing and economics. Theoretically, this concept has been instrumental in studying consumer purchase decisions, competitive pricing strategies, and welfare economics. Managerially, knowledge of consumer reservation prices is critical for implementing many pricing tactics such as bundling, target promotions, nonlinear pricing, and one-to-one pri...

Electronic intermediaries play an important role in many Web-based electronic markets, adding value for participants by offering services such as matchmaking and trust. This paper presents an economic model of intermediation where the intermediary offers services to two types of actors: consumers and providers. When consumers are heterogeneous, differentiated on their willingness to pay for int...

I study the impact of e-commerce on competition in retail markets. Using scanner data from a large chain that markets grocery online and through traditional stores, I illustrate that selling online reduces the barrier of geographic differentiation and allows stealing business from competitors. Between 60% and 70% of the sales made online by the chain are stolen from other grocers, the rest comi...

The Hot Strip Mill Production Scheduling Problem is a hard problem that arises in the steel industry when scheduling steel coil production. It can be modeled as a generalization of the Prize Collecting Traveling Salesman Problem with multiple and conflicting objectives and constraints. In this paper we formulate this problem as a mathematical program and propose a heuristic method to determine ...

Let [(R ec , R uc), (R ev , R uv)] represent an ownership structure where R ec represents the client's excludability rights, R uc represents the client's usability rights, R ev represents the vendor's excludability rights, and R uv represents the vendor's usability rights. Because of the diagonal symmetry only the bottom left diagonal will be discussed in detail.