201 research outputs found
National First Peoples Gathering on Climate Change
Our purpose in hosting the National First Peoples Gathering on Climate Change (the Gathering) was to celebrate, learn from and enhance First Peoples-led climate action. We set out to strengthen kinships, cultural identity and well-being, and to strengthen caring for Country by using both Indigenous and scientific knowledge. The Gathering supported this overall purpose through five aims:⢠Bring Traditional Owners together to share with one another about climate change ⢠Share scientific information in a form useful for Traditional Owners⢠Identify options for policy to respond to climate change ⢠Provide tangible information to take back to communities⢠Highlight First Peoplesâ climate change actions. 110 Traditional Owners from across Australia attended the Gathering
Observation of Ground-State Two-Neutron Decay
Neutron decay spectroscopy has become a successful tool to explore nuclear
properties of nuclei with the largest neutron-to-proton ratios. Resonances in
nuclei located beyond the neutron dripline are accessible by kinematic
reconstruction of the decay products. The development of two-neutron detection
capabilities of the Modular Neutron Array (MoNA) at NSCL has opened up the
possibility to search for unbound nuclei which decay by the emission of two
neutrons. Specifically this exotic decay mode was observed in 16Be and 26O.Comment: To be published in Acta Physica Polonica
Exploring the neutron dripline two neutrons at a time: The first observations of the 26O and 16Be ground state resonances
The two-neutron unbound ground state resonances of O and Be
were populated using one-proton knockout reactions from F and B
beams. A coincidence measurement of 3-body system (fragment + n + n) allowed
for the decay energy of the unbound nuclei to be reconstructed. A low energy
resonance, 200 keV, was observed for the first time in the O + n + n
system and assigned to the ground state of O. The Be ground state
resonance was observed at 1.35 MeV. The 3-body correlations of the Be +
n + n system were compared to simulations of a phase-space, sequential, and
dineutron decay. The strong correlations in the n-n system from the
experimental data could only be reproduced by the dineutron decay simulation
providing the first evidence for a dineutron-like decay.Comment: Invited Talk given at the 11th International Conference on
Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1,
2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference
Series (JPCS
The atmospheric role in the Arctic water cycle: A review on processes, past and future changes, and their impacts
This is the final version of the article. Available from the publisher via the DOI in this record.Atmospheric humidity, clouds, precipitation, and evapotranspiration are essential components of the Arctic climate system. During recent decades, specific humidity and precipitation have generally increased in the Arctic, but changes in evapotranspiration are poorly known. Trends in clouds vary depending on the region and season. Climate model experiments suggest that increases in precipitation are related to global warming. In turn, feedbacks associated with the increase in atmospheric moisture and decrease in sea ice and snow cover have contributed to the Arctic amplification of global warming. Climate models have captured the overall wetting trend but have limited success in reproducing regional details. For the rest of the 21st century, climate models project strong warming and increasing precipitation, but different models yield different results for changes in cloud cover. The model differences are largest in months of minimum sea ice cover. Evapotranspiration is projected to increase in winter but in summer to decrease over the oceans and increase over land. Increasing net precipitation increases river discharge to the Arctic Ocean. Over sea ice in summer, projected increase in rain and decrease in snowfall decrease the surface albedo and, hence, further amplify snow/ice surface melt. With reducing sea ice, wind forcing on the Arctic Ocean increases with impacts on ocean currents and freshwater transport out of the Arctic. Improvements in observations, process understanding, and modeling capabilities are needed to better quantify the atmospheric role in the Arctic water cycle and its changes.We thank all colleagues involved in the
Arctic Freshwater Synthesis (AFS) for
fruitful discussions. In particular, John
Walsh is acknowledged for his constructive
comments on the manuscript. AFS
has been sponsored by the World
Climate Research Programmeâs Climate
and the Cryosphere project (WCRP-CliC),
the International Arctic Science
Committee (IASC), and the Arctic
Monitoring and Assessment Programme
(AMAP). The work for this paper has been
supported by the Academy of Finland
(contracts 259537 and 283101), the UK
Natural Environment Research Council
(grant NE/J019585/1), the US National
Science Foundation grant ARC-1023592
and the Program âArcticâ and the Basic
Research Program of the Presidium
Russian Academy of Sciences. NCAR is
supported by the U.S. National Science
Foundation. We gratefully acknowledge
the project coordination and meeting
support of Jenny Baeseman and
Gwenaelle Hamon at the CliC
International Project Office. No new data
were applied in the manuscript. Data
applied for Figures 2 and 3 are available
from the JRA-55 archive at http://jra.
kishou.go.jp/JRA-55/index_en.
html#usage
Measuring and Examining the Relevance of Discretionary Corporate Social Responsibility in Tourism: Some Preliminary Evidence From The UK Conference Sector
This article investigates the implementation of environmentally focused discretionary corporate social responsibility (CSR) within the U.K. conference sector. A new framework is proposed that organizes and communicates information detailing business performance regarding 10 environmental policy initiatives (expressed by the acronym GREENER) using a CSR response scale (expressed by the acronym VENUE). This GREENER VENUE framework fills a void in the CSR literature by focusing on discretionary practices, by exhibiting psychometric and conceptual properties enabling its application within a multitude of contexts. Grounded in theory, the framework is simple to implement, practical, easily understandable, and highly relatable. Applying the GREENER VENUE framework to data collected via a self-administered Internet questionnaire of the U.K. conference sector reveals the majority of conference venues are classified as Eager. The study also examines the efficacy of the proposed framework toward influencing U.K. venuesâ performance on a range of environmentally friendly best practices relative to environmental accreditation
Spatial search using the discrete time quantum walk
We study the quantum walk search algorithm of Shenvi et al. (Phys Rev A 67:052307, 2003) on data structures of one to two spatial dimensions, on which the algorithm is thought to be less efficient than in three or more spatial dimensions. Our aim is to understand why the quantum algorithm is dimension dependent whereas the best classical algorithm is not, and to show in more detail how the efficiency of the quantum algorithm varies with spatial dimension or accessibility of the data. Our numerical results agree with the expected scaling in 2D of O(âN log N}) , and show how the prefactors display significant dependence on both the degree and symmetry of the graph. Specifically, we see, as expected, the prefactor of the time complexity dropping as the degree (connectivity) of the structure is increased
Delphinidin-3-glucoside suppresses breast carcinogenesis by inactivating the Akt/HOTAIR signaling pathway
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