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In this paper, we review the historical evolution of predictions of the performance of optical communication systems. We will describe how such predictions were made from the outset of research in laser based optical communications and how they have evolved to their present form, accurately predicting the performance of coherently detected communication systems.

We demonstrate that a combination of Raman laser based amplification and optical phase conjugation enables transmission beyond the nonlinear-Shannon limit. We show nonlinear compensation of 7x114Gbit/s DP-QPSK channels, increasing system reach by 30%.

The psychological sense of community was explored within a corporate environment by identifying characteristics of the psychosocial climate that predicted it. Four hundred thirty‐four employees completed the Sense of Community Index (SCI), modified for a work community, and the Moos Work Environment Scale (WES). Multiple regression analyses indicated that WES factors predicting a portion of employees' sense of community differed between men and women in management and nonmanagement groups. Male managers' sense of community was predicted by their perceptions of Peer Cohesion and Involvement, whereas female managers' sense of community was predicted by their perceptions of Supervisor Support, Involvement, and Work Pressure. Male nonmanagers' sense of community was predicted by their perceptions of Involvement and Supervisor Support, whereas female nonmanagers' sense of community was predicted by perceptions of Involvement and Peer Cohesion. Gender differences in the sense of community experienced within two levels of the corporate hierarchy are discussed.

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