Robin Huws Jones (United Kingdom), President 1976- 1980

Robin Huws Jones, President of the International Association of Schools of Social Work from 1976 to 1980, lived a life of challenge and change. Born in Wales in 1909, he often remarked that learning to speak Welsh at age two was such a challenge that he didn���t bother to learn English until he was six. The death of his mother when he was three led to the first of many changes in a life that was not easy in the formative years. Robin remained in the care of his father while his sister became the ward of two aunts. With his father, a draper���sassistant, he left Wales to live in a crowded boarding house in Liverpool.

��ber Aus- und R��ckwanderung : Vortrag, geh. am Mittwoch, 17. Sept. 1902 in d. Henry Jones-Loge in Hamburg

von Paul Laskar

Monte Carlo modeling of polarized light propagation: Stokes vs Jones - Part I

This bipartite comparative study aims at inspecting the similarities and differences between the Jones and Stokes���Mueller formalisms when modeling polarized light propagation with numerical simulations of the Monte Carlo type. In this first part, we review the theoretical concepts that concern light propagation and detection with both pure and partially/totally unpolarized states. The latter case involving fluctuations, or ���depolarizing effects,��� is of special interest here: Jones and Stokes���Mueller are equally apt to model such effects and are expected to yield identical results. In a second, ensuing paper, empirical evidence is provided by means of numerical experiments, using both formalisms.

Monte Carlo modeling of polarized light propagation: Stokes vs Jones - Part II

In this second part of our comparative study inspecting the (dis)similarities between ���Stokes��� and ���Jones,��� we present simulation results yielded by two independent Monte Carlo programs: (i) one developed in Bern with the Jones formalism and (ii) the other implemented in Ulm with the Stokes notation. The simulated polarimetric experiments involve suspensions of polystyrene spheres with varying size. Reflection and refraction at the sample/air interfaces are also considered. Both programs yield identical results when propagating pure polarization states, yet, with unpolarized illumination, second order statistical differences appear, thereby highlighting the pre-averaged nature of the Stokes parameters. This study serves as a validation for both programs and clarifies the misleading belief according to which ���Jones cannot treat depolarizing effects.���

Jones, Kniest��ck

Signatur des Originals: S 36/F08915

Agnes Huntington als Paul Jones, Rollenbild, Brustbild

Signatur des Originals: S 36/F08873

Edwin J. Lonnen, Jones, Rollenbild, Doppelbildnis

Signatur des Originals: S 36/F09132

Annie Jones, Rollenbild, Brustbild

Signatur des Originals: S 36/F09560