The representation of biological systems by means of organismic supercategories, developed in previous papers, is further discussed. The different approaches to relational biology, developed by Rashevsky, Rosen and by Baianu and Marinescu, are compared with Qualitative Dynamics of Systems which was initiated by Henri Poincaré (1881). On the basis of this comparison some concrete results concern...

We present a high level formalism for specifying verbal and nonverbal output from a multimodal dialogue system. The output specification is XML-based and provides information about communicative functions of the output without detailing the realisation of these functions. The specification can be used to control an animated character that uses speech and gestures. We give examples from an imple...

The paper investigates the realization problem for a class of analytic nonlinear hybrid systems without autonomous switching. Similarly to the classical nonlinear realization theory the realization problem for hybrid systems is translated to a formal realization problem of a class of abstract systems defined on rings of formal power series. Necessary conditions are presented for existence of a ...

During development, cells divide, differentiate into various cell types, and organize into functional tissues and organs. We are interested in understanding the cellular and molecular basis of organ formation in the nematode Caenorhabditis elegans. To this end, we are investigating two novel proteins that have a role in gonadogenesis, SYS-1 and NUD-1. SYS-1 was identified via a genetic screen f...

The bb̄ production cross section in 920 GeV proton-nucleus fixed target collisions is measured by observing double muonic decays of b-flavoured hadrons in the kinematic region −0.3 < xF(μ) < 0.15. A total number of 76 ± 12 bb̄ events is obtained with a likelihood fit of the signal and background simulated events to the data. The resulting cross section is σbb̄ = 16.2 ± 2.5stat ± 2.8sys nb/nucleon,...

Abstrac t -Two commercial two-phase digital AC voltage sources, WW2572A from Tabor Electronics and SYS-2722 from Audio Precision, were tested for their potential use in impedance comparator bridges. The mutual relative stability of magnitudes and phase shifts of their output voltages were evaluated. Results of relative amplitude and phase shift stability measurements prove that it is possible t...

W e undertook a s tudy to determine i f the automatic detection and counting of vehicle passengers is feasible. An automated passenger counting sys tem would greatly facilitate the operation of freeway lanes reserved f o r buses, car-pools, and emergency vehicles (HO V lanes). In the present paper we report our findings regarding the appropriate sensor phenomenology and arrangement f o r the ta...