This paper introduces a new way of modeling classes of physical and biochemical processes and structures based on boundary conditions that are called ‘‘forbidden’’ and ‘‘enforced’’. The model of forbidding–enforcing systems (fe-systems) is presented in a general categorical sense and we use three specific examples of categories to illustrate three different phenomena. The hydrogen and covalent ...

The Integrated Concept Advancement (ICA) research project aims for the development of a Computer Aided Conceptual Design engineering ontology for the shape of consumer products [1]. This paper focuses on the ergonomics boundary conditions (ICA-E). It considers an ergonomics shape optimization system (CAECD), see the accompanying paper for this conference [3]. FE analysis is used intensively to ...

We have carried-out multi-configuration Breit–Pauli autostructure calculations for the dielectronic recombination (DR) of Fe – Fe ions. We obtain total DR rate coefficients for the initial ground-level which are an order of magnitude larger than those corresponding to radiative recombination (RR), at temperatures where Fe 3p (q = 2 − 6) ions are abundant in photoionized plasmas. The resultant t...

The machining of titanium alloys poses several inherent difficulties owing to their unique mechanical properties and cutting characteristics. Finite element (FE) simulations have reduced the burden of extensive experimental trials in understanding the deformation behavior and optimize the cutting process. The FE code relies on the qualitative nature of inputs such as material flow stress model,...

To simulate dynamic soft geo-objects and reflect geoscientific laws, the authors discuss the characteristics, mathematical expression, parameter representation and rendering of GIS Flow Element (FE) and GIS Soft Voxel (SV). The simulation and rendering algorithms of GIS FE and GIS SV are based on particle system and metaball technology in computer graphics. The main differences are that GIS FE ...

An integral multi-disciplinary chain optimization based on a high-level cascaded Shannon-based channel modeling is proposed. It is argued that the analog part of the front-end (FE) will become a bottleneck in the overall chain. This requires a FE-centric design approach, aiming for maximizing the effective data capacity, and for an optimal exploitation of this capacity for given power dissipati...

Using linear response approach to the Mössbauer isomer shift, the calibration constant alpha((57)Fe) was obtained from high level ab initio calculations carried out for a representative set of iron compounds. The importance of the effects of relativity and electron correlation for an accurate description of the (57)Fe isomer shift is demonstrated on the basis of the Hartree-Fock, coupled cluste...

The objective of this study was to produce an improved finite element (FE) model of the human middle ear and to compare the model with human data. We began with a systematic and accurate geometric modeling technique for reconstructing the middle ear from serial sections of a freshly frozen temporal bone. A geometric model of a human middle ear was constructed in a computer-aided design (CAD) en...

Escherichia coli AlkB is a DNA/RNA repair enzyme containing a mononuclear Fe(II) site that couples the oxidative decomposition of alpha-ketoglutarate (alphaKG) to the hydroxylation of 1-methyladenine or 3-methylcytosine lesions in DNA or RNA, resulting in release of formaldehyde and restoration of the normal bases. In the presence of Fe(II), alphaKG, and oxygen, but the absence of methylated DN...