In this paper we propose a new solution which utilizing the Gyro Sensor and Tilt Sensor in real-time controlling the balance of wheelchair seat. The existing wheelchair systems have the risk of falling when users go uphill because of the uneven weight allocation. But when applying our new method, the wheelchair seat can automatically adjust to maintain the balance therefore provides a safer and...

Falling into a Niche: Institutional Equilibrium between Plurality and Proportional Representation for Large Political Parties" Scholars of electoral systems (e.g., Duverger, 1954; Rae 1967) argue that a combination of electoral system and district magnitude provide the strategic incentives for political party competition. All electoral systems reward large parties with a disproportional seat bo...

A well-studied problem in the literature on airline revenue (or yield) management is the optimal allocation of seat inventory among fare classes given a demand distribution for each class. In practice, the seat allocation decisions of one airline affect the passenger demands for seats on other airlines. In this paper we examine the seat inventory control problem under both horizontal competitio...

A well-studied problem in the literature on airline revenue (or yield) management is the optimal allocation of seat inventory among fare classes given a demand distribution for each class. In the literature thus far, passenger demand is an exogenous parameter. However, the seat allocation decisions of one airline affect the passenger demands for seats on other airlines. In this paper we examine...

At Harvard Business School, like at many other professional schools around the country, students’ learning experience requires limits on the number of students in a class. This creates an interesting allocation problem for school administrations: students need a seat in several classes, and classes have limited capacity. In addressing this problem, all schools have some e¢ ciency and fairness o...

This study presents an optimization model that uses stochastic programming to optimally allocate seats and maximize the profit of airline, considering overbooking. Airline seat inventory control involves selling right people at time. If airline sells tickets on a first-come, first-serve basis, it is likely be occupied by leisure travelers late bookers. Therefore, business willing pay higher far...

In this paper we consider an airline seat allocation model where multiple fare classes are available and replenishment can be allowed for the lower fare classes. Such a replenishment likely occurs whenever the higher fare classes do not have demands large enough compared with the number of the pre-allocated seats. Then, the lower fare classes should be reopened while the prices may be discounte...