Views of Architecture

Using refinement, you can model objects and interactions at all levels of granularity. This arrangement provides a fractal view of architecture, from the business roles and processes to large-grained interacting architectural components including a system to individual interfaces and classes. Any refinement has associated architectural decisions. 

The book Engineering a Safer World by Nancy Leweson mentions a suggestion that describes the structure for various views of architecture and the allocation of requirements. All coherences are described with the term Intent Specification (Fig. 3.5). 

Figure 6. Schematic view of our Micro-Deformable Mirror architecture.

It is likely that the above schematic view of the potential energy surface would be relevant for the mixed valence Donnor Acceptor Donnor (DAD) architectures such as ... 

Myelin in situ has a water content of about 40%. The dry mass of both CNS and PNS myelin is characterized by a high proportion of lipid (70-85%) and, consequently, a low proportion of protein (15-30%). By comparison, most biological membranes have a higher ratio of proteins to lipids. The currently accepted view of membrane structure is that of a lipid bilayer with integral membrane proteins embedded in the bilayer and other extrinsic proteins attached to one surface or the other by weaker linkages. Proteins and lipids are asymmetrically distributed in this bilayer, with only partial asymmetry of the lipids. The proposed molecular architecture of the layered membranes of compact myelin fits such a concept (Fig. 4-11). Models of compact myelin are based on data from electron microscopy, immunostaining, X-ray diffraction, surface probes studies, structural abnormalities in mutant mice, correlations between structure and composition in various species, and predictions of protein structure from sequencing information [4]. 

Chapter 12, Architecture, shows how the architecture of a system—views of its components structure and their relationships to one another—is defined by the set of available design and implementation building blocks and the set of rules and patterns for applying those blocks coherently and consistently. 

In our view, architecture is not only about Gothic-scale structures but is also about all structures and relationships used down to the level of code.1 The decision to use a four-tier structure, with a thin client, a Web server, a business application server, and a database, is architectural. But, in the extreme, we consider a consistent use of getXQ and setX(x) methods also to be part of the (detailed) architecture. This view leads to a somewhat less formal definition of architecture. 

There are many different architectural views of a system, calling for different kinds of elements. These elements include hardware and networks, packages and their structures, object types and relationships, concurrent processes and threads, tables and columns, and the patterns that dictate how they are to be used. An architectural style, or type, defines a consistent set of elements and rules for their use. 

Collaborations, as partial definitions of object roles and types and their interactions, provide support for a pattern view of the dynamic aspects of an architecture. A design is often best understood as a composition of such patterns onto the objects involved rather than in terms of individual objects or interactions. 

It is possible that quite different molecular architectures may occur in membranes from different sources. Current research may result in a much more dramatic revision or complete rejection of the bilayer model for some membranes, especially in such systems as mitochondria (30) and chloroplasts (2). However, it is also possible that structural differences are only variations on the basic theme of the bilayer, from myelin at one extreme to mitochondria or chloroplasts on the other. One must not readily reject the fundamentals of the Danielli concept, especially in view of the present inadequate knowledge of the properties of phospholipids in water. Clearly the molecular architecture of membranes is speculative, but most aspects of the problem are amenable to direct experimental test by the new physical techniques. A consistent model for biological membranes will emerge quickly. 

In view of this unrealistic reconstructions carried out after the war, the Jewish-American professor of architecture Robert van Pelt, who actually is only a professor for cultural history, in co-operation with the Jewish-Canadian Holocaust historian Deborah Dwork, arrives at the following, no less unequivocal conclusions 173... 

The main goal of the application is to provide system operators with a view of the security status of the information system. As such, it collects events generated by multiple components of the information system and normalizes them into a generic format. Events are then homogenized to facilitate the display in a generic web application. The architecture of the application is presented in Figure 1. 

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