A Critical Analysis of Creativity in Sustainable Production and Design

This paper provides a system level perspective of the contextual pressures facing designers, engineers and businesses today. In it, we challenge negative creative norms and we champion positive ‘post normal’ creativity to enable a sustainable future. We hypothesise that organisations working towards creative sustainable solutions are driven by a purpose designed to respond to the current and contextual pressures faced by the Earth’s systems, a global society and a global economy. Developing motivations within a sustainable system will require instilling a long-term world-view perspective in all learners— and in this we include international leaders and industrialists, business owners, academic teachers and pupils. A regenerative mind-set must be encouraged across the collective of engineers, designers and business leaders—so that humanity can realise ecological, social and financial prosperity. ‘Business as normal’ must come to an end. We must enable an industrialised humanity to design its way out of unsustainable times. Across undergraduate and postgraduate education, through to Continued Professional Development and lifelong learning, the impact of design and business decisions must be qualified and quantified with respect to the three pillars (people, planet and profit). The consequences must be recognised, discussed, measured and used to productive and healthy advantage. By generating and adopting a more holistic view of impact, we have the potential for making real time measurement in a clean Fourth Industrial Revolution. With tangible measures of impact across full project lifecycle and the full supply and distribution chain, designers and engineers will be better informed to make sustainable decisions

Fourteen New Companions from the Keck & Lick Radial Velocity Survey Including Five Brown Dwarf Candidates

We present radial velocities for 14 stars on the California & Carnegie Planet Search target list that reveal new companions. One star, HD 167665, was fit with a definitive Keplerian orbit leading to a minimum mass for the companion of 50.3 Mjup at a separation from its host of ~5.5 AU. Incomplete or limited phase coverage for the remaining 13 stars prevents us from assigning to them unique orbital parameters. Instead, we fit their radial velocities with Keplerian orbits across a grid of fixed values for Msini and period, P, and use the resulting reduced chi-square surface to place constraints on Msini, P, and semimajor axis, a. This technique allowed us to restrict Msini below the brown dwarf -- stellar mass boundary for an additional 4 companions (HD 150554, HD 8765, HD 72780, HD 74014). If the combined 5 companions are confirmed as brown dwarfs, these results would comprise the first major catch of such objects from our survey beyond ~3 AU.Comment: 29 pages, 14 figures, accepted to Ap

The Dependence of Star Formation Rates on Stellar Mass and Environment at z~0.8

We examine the star formation rates (SFRs) of galaxies in a redshift slice encompassing the z=0.834 cluster RX J0152.7-1357. We used a low-dispersion prism in the Inamori Magellan Areal Camera and Spectrograph (IMACS) to identify galaxies with z<23.3 AB mag in diverse environments around the cluster out to projected distances of ~8 Mpc from the cluster center. We utilize a mass-limited sample (M>2x10^{10} M_sun) of 330 galaxies that were imaged by Spitzer MIPS at 24 micron to derive SFRs and study the dependence of specific SFR (SSFR) on stellar mass and environment. We find that the SFR and SSFR show a strong decrease with increasing local density, similar to the relation at z~0. Our result contrasts with other work at z~1 that find the SFR-density trend to reverse for luminosity-limited samples. These other results appear to be driven by star-formation in lower mass systems (M~10^{10} M_sun). Our results imply that the processes that shut down star-formation are present in groups and other dense regions in the field. Our data also suggest that the lower SFRs of galaxies in higher density environments may reflect a change in the ratio of star-forming to non-star-forming galaxies, rather than a change in SFRs. As a consequence, the SFRs of star-forming galaxies, in environments ranging from small groups to clusters, appear to be similar and largely unaffected by the local processes that truncate star-formation at z~0.8.Comment: 5 pages, 3 figures, accepted for publication in ApJ