An intelligent computing device agent system for auto recognition of a computing environment of multi-user and optimum information exchange configuration is provided. The region is used to generate medicines that kill malignant cells and tumorigenic cells. Yet another exemplary system describes a clamp that secures a rail or module and is adjustable along the length of a post. Exemplary trapdoor pairing constructions have general applicability to cryptography and also lend themselves more specifically to certain special practical implementations, such as public key cryptography and certificate authority infrastructures. Methods of making minimal angle dependent optical spectrum filters and reducing angle dependence for such devices are also provided. The system provides varying levels of insight into a modeling infrastructure to help the user understand model and model variable dependencies, usage, distribution, andor the like.