Numerous Prototypes Research Articles

ARIS Toolset: A software product is born

The ARIS Toolset represents an internationally successful software system for analyzing, modeling and navigating business processes. It is the result of interlinking the findings of conceptual research, research prototypes, and professional software development. The ARIS Toolset integrates manifold ideas for the description of information systems, repository structures — right up to automated customizing of standard software. These ideas emerged from the work of many people in different research projects. The paper narrates how the lengthy and difficult conceptual work created a foundation of knowledge and experience which in turn produced an “explosion” of numerous prototypes; it also tries to elaborate on the effort it takes to convert prototypes into marketable products.

Framework for Construction Robot Fleet Management System

The application of robotic equipment to the execution of construction tasks is gaining the attention of researchers and practitioners around the world. Numerous working prototype systems have been developed by construction companies or system manufacturers and implemented on construction job sites. Several Japanese construction firms have already developed a fleet of construction robots. As a response to the need to manage effectively diverse robots on future construction sites, this paper describes the architecture for the construction robotic equipment management system (CREMS). A generic decision logic for comparison of conventional work methods and available robotics for the performance of construction tasks is outlined. Modules comprising the system and the interrelationships between the system modules are presented. A logic for comparison of use of one robot on concurrent, mutually exclusive projects is discussed. An example application of CREMS to a concrete floor finishing robot evaluation is presented.

Remark on algorithm perm

The solid oxide fuel cell is an electro-chemical device which converts chemical energy into electricity and heat. To compete in today’s market, design improvements, in terms of performance and life cycle, are required. Numerical prototypes can accelerate design and development progress. In this programme of research, a three-dimensional solid oxide fuel cell prototype, openFuelCell, based on open-source computational fluid dynamics software was developed and applied to a single cell. Transport phenomena, combined with the solution to the local Nernst equation for the open-circuit potential, as well as the Kirchhoff–Ohm relationship for the local current density, allow local electro-chemistry, fluid flow, multi-component species transport, and multi-region thermal analysis to be considered. The underlying physicochemical hydrodynamics, including porous-electrode and electro-chemical effects are described in detail. The openFuelCell program is developed in an object-oriented open-source C++ library. The code is available at http://openfuelcell.sourceforge.net/. The paper also describes domain decomposition techniques considered in the context of highly efficient parallel programming.

A comment on the ‘basic security theorem’ of Bell and LaPadula

Many claim that the security model developed by Bell and LaPadula and used as a basis for numerous prototype military computer systems is superior to others partly because its authors prove a ‘Basic Security Theorem’ that applies to it. This paper shows that the theorem does not support such claims since it can be proven for security models that are obviously not secure. Further, the theorem provides little help to those who design and implement secure systems.

Unusual but uncomplicated peptic ulcers.

T f, S GE~;aIC TE~ "peptic ulcer" results from a nearly universal acceptance of the combination of acid and pepsin as the essential environment factor associated with these lesions. Despite many significant differences between gastric and duodenal ulcers, the relationship of acid-pepsin to the natural history of both has thus far remained unassailable. Under this broad nomenclature, certain infrequently occurring ulcers demand inclusion. Some of them appear to possess unusual characteristics, and most of them are different in both appearance and behavior from their more numerous and familiar gastric and duodenal prototypes. They are important because they often constitute a serious threat to life through perforation or hemorrhage. Failure to anticipate and possibly prevent these catastrophic complications must be ascribed to deficiencies in the approach to diagnosis. The presumption that some of these faults are eorreetible may emerge from a review of our recent experience with some of these unusual ulcers. ESOPHAGEAL ULCER