In the paper, we propose a bilevel direct search method for the distributed computation of equilibria in leader-follower problems. This type of direct search methods is designed for characterizing the decision making process where the players’ objective functions are not analytically available. We investigate the convergence of the accumulation points yielded by the method to the stationary poi...

This field experimental study examined the role that positive leadership plays in producing effective leader and follower outcomes. Specifically, a sample of engineers (N = 106) from a very large aerospace firm were randomly assigned to four experimental conditions. Two conditions involved assigning these engineers to a low and high problem complexity condition. The other two conditions represe...

The paper introduces a new vision-based range estimator for leader-follower formation control, based upon the Immersion and Invariance (I&I) methodology. The proposed reduced-order nonlinear observer is simple to implement, easy to tune and achieves global asymptotical convergence of the observation error to zero. Observability conditions for the leader-follower system are analytically derived ...

Linear bilevel programming is a decision making problem with a two-level decentralized organization. The leader is in the upper level and the follower, in the lower level. This study addresses linear bilevel multi-objective multi-follower programming (LB-MOMFP) problem, a special case of linear bilevel programming problems with one leader and multiple followers where each decision maker has sev...

This study looked at the relationship between leader-member exchange (LMX), transformational leadership, and terminal and instrumental value system congruence between leader and follower, and their relative impact on four outcomes, using a sample of 100 pairs of managers and subordinates from a non-profit organization in the United States. The four outcomes studied are perceived effectiveness o...

During the last three decades, there has been a growing body of research dealing with transformational leadership. Initially outlined by Burns in his book of 1978, the theory of transformational leadership was reconceptualized and developed by Bass. Bass views transformational leadership as an expansion of traditional leadership that goes beyond simple exchange rewards and promises of reward fo...

In this paper we will consider the control of spacecraft in a leader-follower formation using attitude measurements only. To analyze the formation under nonvanishing disturbances, we make use of the concept of uniform semiglobal practical exponential stability. To ease the Lyapunov analysis a new theorem is provided, giving sufficient conditions for systems presenting a cascaded structure to sa...

The paper deals with vision-based localization and control of leader-follower formations of unicycle robots. Each robot is equipped with a panoramic camera which only provides the view-angle to the other robots. As an original contribution, the localization problem is analytically studied using a new observability condition valid for general nonlinear systems and based on the Extended Output Ja...

This paper presents an adaptive fault-tolerant control (FTC) scheme for leader-follower consensus control of uncertain mobile agents with actuator faults. A local FTC component is designed for each agent in the distributed system by using local measurements and certain information exchanged between neighboring agents. Each local FTC component consists of a fault detection module and a reconfigu...

In this paper, we investigated the idea of including mobile robots as complementary machinery to tractors in an agricultural context. The main is not replace human farmer, but augment his/her capabilities by deploying assistants field operations. scheme based on a leader–follower approach. manned tractor used leader, which will be taken reference point for follower. follower then takes position...