Public tendering and green procurement as potential drivers for sustainable urban development: Implications for landscape architecture and other urban design profession

This paper examines whether green public procurements are potential drivers for the development of a landscape architecture professional field in urban design. It proposes an analysis based on the nature of professional skill sets requested and selected by the public tendering process in France. To conduct this research, an analysis of 196 public ‘calls for tender’ and their results are undertaken. Depending on the consideration of ecological concerns, two types of projects are identified: traditional projects and green projects. We examine the impact that ecological issues assert on the position of landscape architecture within the requested skills and within the winning design team. Our main results show that the emergence of green public procurements in France has a significant impact on the demand for new types of professional ‘competencies’ and disciplinary collaborations but not on the results after the selection process.It appears that clients request more multidisciplinarity collaborations to address green criteria. In addition, the landscape architect is always associated with multidisciplinary teams in the requirements of the public call for tender. However, the emergence of new professional skills in the environmental field challenges the expertise of landscape architects and constitutes a competitive field. Counter to the ‘call for tender’ requirements, the selection process favours monodisciplinary teams, often the architect, who is also the favourite for the lead-consultant role. Finally, we discuss how the recognition of landscape architecture as an academic discipline can influence landscape education and how a strong professional body can protect a professional title

MOBBING CALLS OF THE PHAINOPEPLA

When mobbing potential predators, male Phainopeplas (Phainopepla nitens) utter smoothly upswept vocalizations, unlike the harsh, staccato mobbing calls of other birds and mammals. A Phainopepla repeats this call as it approaches the bottom of its diving arc over the predator. We suggest that these calls do not serve to attract additional mobbers to the scene. Rather, they appear to emphasize the diving attacks directed toward the predator

Physical State of the Deep Interior of the CoRoT-7b Exoplanet

The present study takes the CoRoT-7b exoplanet as an analogue for massive terrestrial planets to investigate conditions, under which intrinsic magnetic fields could be sustained in liquid cores. We examine the effect of depth-dependent transport parameters (e.g., activation volume of mantle rock) on a planet's thermal structure and the related heat flux across the core mantle boundary. For terrestrial planets more massive than the Earth, our calculations suggest that a substantial part of the lowermost mantle is in a sluggish convective regime, primarily due to pressure effects on viscosity. Hence, we find substantially higher core temperatures than previously reported from parameterized convection models. We also discuss the effect of melting point depression in the presence of impurities (e.g., sulfur) in iron-rich cores and compare corresponding melting relations to the calculated thermal structure. Since impurity effects become less important at the elevated pressure and temperature conditions prevalent in the deep interior of CoRoT-7b, iron-rich cores are likely solid, implying that a self-sustained magnetic field would be absent.Comment: 4 pages, 3 figures. IAU 276 Proceeding

The Ursinus Weekly, May 13, 1957

Elections held for MSGA and class officers, May 9: Fred Glauser new MSGA president; Results of class officer elections • Rohm president of Future Teachers • Sophomore rulers elected by freshman women • Clambake planned by sophomores for May 25 • Fund poll to be run this week • YM-YWCA plan picnic May 15; Dr. Helfferich to speak at Y meeting on May 22 • Chi Alpha to meet Tues. • May Day shines despite showers; Pageant, concert, play presented • Sabrina Fair award to Millward • Concert by Band and Meistersingers • Accreditation of Ursinus re-affirmed by commission • Social science society bids nine new members • Pre-medders sponsor play • Editorial: Our legacy • Play review: Sabrina fair • Glueville revisited • May Day 2007 A.D.: A report • Friendship: An analysis • Belles beat Temple 10-2; Lose to Beaver in opener • Pigs beat dogfish in close thriller, May 3 • Diamondmen beat F&M; Lose to Haverford & Wilkes • Lawhead, Buggeln star in meets with Albright, Bucknell and PMC • Four Bears score 12 points in M.A. • Bears beat Drexel; JVs lose to Hill • Chem society elects officers • New books at Library • Omega Chi elects new officers • Curtain Club electionshttps://digitalcommons.ursinus.edu/weekly/1429/thumbnail.jp

Increased yields of marine fish and shrimp production through application of innovative techniques with <i>Artemia</i>

The larval culture of fish and shrimp can be seriously improved thanks to the results of recent research and developments in the field of Artemia production and utilisation.The present article provides a historical overview of Artemia cyst demand and provision, summarizes the latest results of Artemia production in extensive and intensive culture systems and correlates the increased outputs in fish and shrimp hatcheries with improved applications of various Artemia products

Photodesorption of CO ice

At the high densities and low temperatures found in star forming regions, all molecules other than H2 should stick on dust grains on timescales shorter than the cloud lifetimes. Yet these clouds are detected in the millimeter lines of gaseous CO. At these temperatures, thermal desorption is negligible and hence a non-thermal desorption mechanism is necessary to maintain molecules in the gas phase. Here, the first laboratory study of the photodesorption of pure CO ice under ultra high vacuum is presented, which gives a desorption rate of 3E-3 CO molecules per UV (7-10.5 eV) photon at 15 K. This rate is factors of 1E2-1E5 larger than previously estimated and is comparable to estimates of other non-thermal desorption rates. The experiments constrains the mechanism to a single photon desorption process of ice surface molecules. The measured efficiency of this process shows that the role of CO photodesorption in preventing total removal of molecules in the gas has been underestimated.Comment: 5 pages, 4 figures, accepted by ApJ

The Ursinus Weekly, April 8, 1957

Co-editors choose staffs, make plans for 1958 Ruby • Dr. Staiger given grant to attend chemistry meeting • Curtain Club to present two plays • Pre-medders make visit to psychiatric hospital • U.C. April Forum to hear address on Egypt, Wed. eve. • Dead Sea scrolls to be Chi Alpha program topic • Annual Spring prom to be presented Friday, April 12th • Program to be held on various fields of social welfare • New Weekly editor-in-chief chooses staff editors, members • Seniors present Two-timer musical comedy, Fri. & Sat. • YW-YMCA present last song program • May Day court, committees chosen • Sig Nu, Delta Pi plan bake sale, orphans\u27 party • UC senior married March 23 • UC grad assigned to new post • Pancoast speaks at Thiel • Editorial: And they said they couldn\u27t do it • Ach, ist Fruhling • Lantern review • Play review: Two timer • Modern fairy tale • Meistersingers give concert • Inter-fraternity field, track events scheduled for Tuesday, April 9th • Sowers high in free throw • Belles complete successful season • Belles beginning tennis practice • U.C. mermaids complete season; Finish with two wins, three losses • Five members of U.C. Band attend annual festivalhttps://digitalcommons.ursinus.edu/weekly/1425/thumbnail.jp

IRAC Excess in Distant Star-Forming Galaxies: Tentative Evidence for the 3.3μ\mum Polycyclic Aromatic Hydrocarbon Feature ?

We present evidence for the existence of an IRAC excess in the spectral energy distribution (SED) of 5 galaxies at 0.6<z<0.9 and 1 galaxy at z=1.7. These 6 galaxies, located in the Great Observatories Origins Deep Survey field (GOODS-N), are star forming since they present strong 6.2, 7.7, and 11.3 um polycyclic aromatic hydrocarbon (PAH) lines in their Spitzer IRS mid-infrared spectra. We use a library of templates computed with PEGASE.2 to fit their multiwavelength photometry and derive their stellar continuum. Subtraction of the stellar continuum enables us to detect in 5 galaxies a significant excess in the IRAC band pass where the 3.3 um PAH is expected. We then assess if the physical origin of the IRAC excess is due to an obscured active galactic nucleus (AGN) or warm dust emission. For one galaxy evidence of an obscured AGN is found, while the remaining four do not exhibit any significant AGN activity. Possible contamination by warm dust continuum of unknown origin as found in the Galactic diffuse emission is discussed. The properties of such a continuum would have to be different from the local Universe to explain the measured IRAC excess, but we cannot definitively rule out this possibility until its origin is understood. Assuming that the IRAC excess is dominated by the 3.3 um PAH feature, we find good agreement with the observed 11.3 um PAH line flux arising from the same C-H bending and stretching modes, consistent with model expectations. Finally, the IRAC excess appears to be correlated with the star-formation rate in the galaxies. Hence it could provide a powerful diagnostic for measuring dusty star formation in z>3 galaxies once the mid-infrared spectroscopic capabilities of the James Webb Space Telescope become available.Comment: 25 pages, 4 figures, accepted by Ap