The notion of Steiner visibility graphs is introduced. Their applicability in connection with the construction of good quality suboptimal solutions to the Euclidean Steiner tree problem with obstacles is discussed. Polynomial algorithms generating Steiner visibility graphs are described.

One of the main goals this study is to investigate whether politically connected firms have a different tendency toward disclosing CSR information compared those without political connections. Another purpose research add existing literature by looking into impact connections in moderating relationship between ownership concentration and CSRD. We collect data on activities undertaken group 94 n...

There is a clear connection between environment and health. This article outlines the importance of the quality of the environment and the role of the public health function in working across the NHS and local government to improve population health.