Project Management Supports (Requisitely) Holistic: Socially Responsible Action in Business Systems

This article emphasizes the role of projects and project management in assuring socially responsible acting of contemporary business systems, presenting some practical applications in the field of tourism. With arising number of projects in business systems and their growing strategic importance, the role of project management has radically been changing for the last two decades. Managing organizations, as a central topic among seven crucial topics in ISO 26000 on social responsibility, is strongly associated with managing projects. Projects have important influence on the established as well as on establishing ongoing operations and are important tools in assuring business systems’ strategic development, by exposing interdependences and supporting the requisitely holistic approach. This article tries to fill the gap we detected in literature on social responsibility where projects and project management seem not to have a proper role. Four different links and interdependencies between project management and systems theory (which ISO 26000 reinforces) are exposed: (1) systemic treatment of project management, (2) systematical treatment of projects as holistic works, (3) systemic treatment of projects as parts of BSs’ strategies, (4) systemic treatment of projects throughout their entire life cycle.     

Risk Assessment of a Stochastic Service System

A stochastic service system of finite size M is comprised of identical service facilities,including or not a waiting queue,which simultaneously treats N custome...     

The genome of the choanoflagellate Monosiga brevicollis and the origin of metazoans

Choanoflagellates are the closest known relatives of metazoans. To discover potential molecular mechanisms underlying the evolution of metazoan multicellularity, we sequenced and analysed the genome of the unicellular choanoflagellate Monosiga brevicollis. The genome contains approximately 9,200 intron-rich genes, including a number that encode cell adhesion and signalling protein domains that are otherwise restricted to metazoans. Here we show that the physical linkages among protein domains often differ between M. brevicollis and metazoans, suggesting that abundant domain shuffling followed the separation of the choanoflagellate and metazoan lineages. The completion of the M. brevicollis genome allows us to reconstruct with increasing resolution the genomic changes that accompanied the origin of metazoans.     

The vector alignments of asteroid spins by thermal torques

Collisions have been thought to be the dominant process altering asteroid rotations, but recent observations of the Koronis family of asteroids suggest that this may be incorrect. This group of asteroids was formed in a catastrophic collision several billion years ago; in the intervening period their rotational axes should have become nearly random because of subsequent collisions, with spin rates that follow a maxwellian distribution. What is seen, however, is that the observed family members with prograde spins have nearly identical periods (7.5-9.5 h) and obliquities between 42 and 50 degrees, while those with retrograde spins have obliquities between 154 and 169 degrees with periods either <5 h or >13 h. Here we show that these non-random orientations and spin rates can be explained by 'thermal torques' (arising from differential solar heating), which modify the spin states over time. In some cases, the asteroids become trapped in spin-orbit resonances. Our results suggest that thermal torques may be more important than collisions in changing the spin states (and possibly shapes) of asteroids with diameters <40 km.     

Patterns of relative species abundance in rainforests and coral reefs

A formidable many-body problem in ecology is to understand the complex of factors controlling patterns of relative species abundance (RSA) in communities of interacting species. Unlike many problems in physics, the nature of the interactions in ecological communities is not completely known. Although most contemporary theories in ecology start with the basic premise that species interact, here we show that a theory in which all interspecific interactions are turned off leads to analytical results that are in agreement with RSA data from tropical forests and coral reefs. The assumption of non-interacting species leads to a sampling theory for the RSA that yields a simple approximation at large scales to the exact theory. Our results show that one can make significant theoretical progress in ecology by assuming that the effective interactions among species are weak in the stationary states in species-rich communities such as tropical forests and coral reefs.     

Histochemical evidence for the presence of dipeptidylpeptidase IV in the Schwann cells of skin uymyelinated axons

Summary DPP IV activity was localized in the nerve fascicles of cat glabrous skin at light and electron microscope levels. The observation that the DPP IV end product was restricted to the axon-Schwann cell interface suggests that this enzyme may be involved in the interactions between unmyelinated axons and their Schwann cells.17 November 1986