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In recent years, a large amount of work on chaos-based cryptosystems have been published. However, many of the proposed schemes fail to explain or do not possess a number of features that are fundamentally important to all kind of cryptosystems. As a result, many proposed systems are difficult to implement in practice with a reasonable degree of security. Likewise, they are seldom accompanied by a thorough security analysis. Consequently, it is difficult for other researchers and end users to evaluate their security and performance. This work is intended to provide a common framework of basic guidelines that, if followed, could benefit every new cryptosystem. The suggested guidelines address three main issues: implementation, key management and security analysis, aiming at assisting designers of new cryptosystems to present their work in a more systematic and rigorous way to fulfill some basic cryptographic requirements. Meanwhile, several recommendations are made regarding some practical aspects of analog chaos-based secure communications, such as channel noise, limited bandwith and attenuation.

The construction of an artifact to visually represent information is usually required by Information Visualization research projects. The end product of design science research is also an artifact and therefore it can be argued that design science research is an appropriate research paradigm for conducting Information Visualization research. Design science research requires that, during the Rigor Cycle, the design of the artifacts should be based on a scientific knowledge base. This article provides a knowledge base in the form of design guidelines that can guide the design of the view for an Information Visualization solution. The design principles and guidelines presented in this article are identified by means of a literature review.

China has the largest aging population in the world, and has entered the aging society. The building light environment design of the existing old-age facilities is still in its infancy. It is very necessary to constitute the evaluation system and the design standards to create a good environment for the aged. This article is about the problems and thinking about the design planning and design guidelines of the building light environment of the facilities for the aged, which is in the research about “the building intelligent integral solution research of new facilities for the aged”, which is in the youth fund of the national natural science foundation of China.