This paper describes the long wave scattering effect in gas saturated porous media using the homogenization method. To investigate the deviation from the continuum description, the multiscale asymptotic expansions are developed up to the third order. The leading (zeroth) order leads to the Biot-Allard continuum description. The correction of first order induces nonlocal terms in the dynamic Dar...

We present spectra of three M subdwarfs which are common proper motion companions to F or G subdwarfs of known metallicity. The assumption that the companions have the same composition allows us to test the Gizis (1997, AJ, 113, 806) M subdwarf classification system and its correspondence to metallicity. The results are in excellent agreement with the Gizis (1997) scale, thereby showing that th...

The inverse dynamics approach is commonly adopted in a human gait analysis. Displacements of the human body segments and ground reaction forces are known from measurements. The joint reaction forces and muscle net torques (which cannot be measured directly) are calculated. Since the ground reaction forces are known it is not necessary to model the foot-ground contact. The inverse dynamics appro...

ECENT studies on experimental populations of barley and lima beans (JAIN and ALLARD 1960; ALLARD and WORKMAN 1963; HARDING, ALLARD and SMELTZER, in preparation) have provided estimates of the intensity of the selection maintaining genetic variation in these predominantly self-fertilized species. In each experiment, selective values were estimated from census data on genotypic frequencies in suc...

Do we desire something because it has value? Or is the value of a thing a consequence of the fact that it is desired? To adopt the former alternative is to involve oneself in the task of providing a theory of value which would make value a property things have as it were prior to their serving as objects of desire. Theories of this sort have been developed inter alia by Meinong, Nicolai Hartman...

We present a variant of Reimer’s proof of the van den Berg-Kesten conjecture.

Death during autoerotic episodes is of special concern to law enforcement officials, the coroner or medical examiner, the family of the decedent, and to society as a whole. As in the probing of any violent demise, accurate preservation of all evidentiary material, complete photographic documentation, reconstruction of the scene, and interviews with family and acquaintances ("psychological autop...

Virtual environments are becoming more and more accepted, and part of the everyday online experience for many users. This offers new potential for both surveillance and data mining. Some of the techniques used are discussed in this paper. However, such activities may in many countries conflict with the legal framework in place, for example with the German Federal Data Protection Act (Datenschut...

Quasi-molecular satellite features of Ly β were first observed in a HUT spectrum of the DA white dwarf Wolf 1346 and interpreted by Koester et al. (1996). In this paper we study the dependence of these features on temperature and surface gravity in 4 additional DA observed with ORFEUS-SPAS II in 1996. For the interpretation we use theoretical atmosphere models which incorporate new profiles for...