This paper considers a variant of two-player linear quadratic stochastic differential games. In this framework, none of the players has access to the state observations for all the time, which restricts the possibility of continuous feedback strategies. However, they can observe the state intermittently at discrete time instances by paying some finite cost. Having on demand costly measurements ...

In this work, N-periodic linear singular systems are considered. Feedbacks for obtaining positive N-periodic singular systems are analyzed. Some properties on the existence of these feedbacks are established. The concept of holdability of the setR+ is used for getting a positive trajectory of the closed-loop singular systems. This paper examines how feedbacks can be used to modify the trajector...

Emotional bonds don’t arise from a simple exchange of facial displays, but often emerge through the dynamic give and take of face-to-face interactions. This article explores the phenomenon of rapport, a feeling of connectedness that seems to arise from rapid and contingent positive feedback between partners and is often associated with socio-emotional processes. Rapport has been argued to lead ...

With the growing popularity of Japanese learning, a large number of learning support tools or systems have been developed to help Japanese learners in various situations. We have particularly noticed the increasing necessity of systems developed as web applications, most of which are free and easily accessed, and hence regarded to be the most significant resources for Japanese learners. However...

While the use of concrete, contextualized and personally relevant examples can benefit learners in terms of comprehension and motivation, these types of examples can come with a cost. Examples may become too bound to their particular context, and individuals may have a difficult time recognizing when the underlying principles are relevant in new situations. In the current study, we provide evid...

This short article is devoted to the dynamics of controlled (and, therefore, open) systems. The internal forces, which appear only in the presence of external free controls and depend explicitely on them, are considered. Such interactive forces may be regarded as feedbacks generated in the system by the external free controls. In particular, one is able to interpret the interactive controls as ...

Partitioning is a key issue within the Codesign process. As it usually consumes much time, it is important to make it as efficient as possible to avoid costly feedbacks. In this way, this paper describes a partitioning process based on a grouping technique intended to avoid high time overheads due to communications, as well as being able to work with a reliable estimation model.

Engagement between clients and consultants has been identified as important in public sector IT projects. However, current literature is not clear what constitutes engagement, and how this is related to other concepts such as cooperation and collaboration. This study proposes a model of engagement based on a range of related extant literature. Five case studies of IT projects in the public sect...