It is proved that one can choose a control function on an arbitrarilly small open subset of the boundary of an obstacle so that the total radiation from this obstacle for a fixed direction of the incident plane wave and for a fixed wave number will be as small as one wishes. The obstacle is called “invisible” in this case.

Governance is a way of exercising power in economic and social resource management of a country. Good governance criteria have different weights and relation with regard to the conditions and information of any country. This study is a descriptive survey and has been carried out to calculate the coefficients and weights of each indicator of good governance in Mena countries and identification o...

background and purpose: physical activity may be classified as intense, moderate, and low. despite their health-related benefits, iranian women have a low rate of physical activity. women face numerous obstacles and challenges for participating in physical activity programs, most notably are household chores and taking caring of children, long distance between home and workplace and the other p...

The goal of IT governance is not only to achieve internal efficiency in an IT organization, but also to support IT’s role as a business enabler. The latter is here denoted IT governance performance, and cannot be controlled by IT management directly. Their realm of control includes IT governance maturity, indicated by e.g. different IT activities, documents, metrics and roles. Current IT govern...

We develop simple models in which corporate governance affects the financing and the production level of firms. In this paper, better corporate governance implies governance under which a smaller firm value can be expropriated by the manager, ceteris paribus. We assume that the potential expropriation can occur after production. In the single firm model, we investigate how corporate governance ...

This chapter reviews the IT governance literature. It proposes that there are three different concepts that are grouped together as IT governance. These concepts are IT governance as a framework or audit process, IT governance as IT decision-making and IT governance as a branch of corporate governance. It argues that the first of these concepts is not a senior management issue, but an aid to a ...