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Condon's model on optical rotatory power and causality - a scientific trifle

In this paper some of the consequences of the model for optical activity suggested by Condon are analyzed. The scattering problem is solved for a semiinfinite and a finite homogeneous slab, respectively. Specifically, the noncausal effects of this model are demonstrated. These effects are disturbingly large for many materials and the model has to be discarded as unphysical. The rotation of the pol

Joint Wheel-Slip and Vehicle-Motion Estimation Based on Inertial, GPS, and Wheel-Speed Sensors

Joint wheel-slip and vehicle-motion estimation is considered, based on measurements from wheel encoders, an inertial measurement unit, and a global positioning system (GPS). The proposed strategy effectively employs the Rao-Blackwellized particle-filtering framework using a kinematic model. Key vari- ables in active safety systems, such as longitudinal velocity, roll angle, and wheel slip for all

Design, synthesis and evaluation of spiro-bicyclo[2.2.2]octane derivatives as paclitaxel mimetics

Nature contains an endless supply of natural products and has for long been a source of inspiration for the pharmaceutical industry. Many of the drugs currently in clinical use originate from natural products. Paclitaxel, the active substance in the anti cancer medicine Taxol, was first isolated from the Pacific yew tree (Taxus brevifolia) in the early 1960s during a screening program for novel an

Searching for tailbiting codes with large minimum distances

Tailbiting trellis representations of linear block codes with an arbitrary sectionalization of the time axis are studied. A new lower bound on the maximal state complexity of an arbitrary tailbiting code is derived. The asymptotic behavior of the derived bound is investigated. Some new tailbiting representations for linear block codes of rates R=1/c, c=2,3,4 are presented

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Rezension des Bandes „Die Rousseau-Frage – ökologisch definiert”, herausgegeben von Udo E. SimonisDer Band ist hervorgegangen aus einer öffentlichen Ausschreibung aus Anlass des zehnjährigen Jubiläums des „Jahrbuchs Ökologie” im Jahre 2001 zur Fragestellung: „Hat der Fortschritt der Wissenschaften und Künste dazu beigetragen, die Umwelt zu schützen und zu bewahren?” Diese Thematik lehnt sich an di

Development of a Framework for Quality Assurance of Performance-based Fire Safety Designs

In this paper, some fundamental problems concerning the verification of fire safety engineering designs based on performance-based building regulations are discussed. It can be questioned if the approach taken by many practitioners today is sufficient to fulfil the requirements laid out in the building code, i.e. society’s demand for fire safety. Examples of this deficiency are that interdependenc