Multifragmentation of non-spherical nuclei : Analysis of central Xe + Sn collisions at 50 MeV/nucl

The influence of shape of expanding and rotating source on various characteristics of the multifragmentation process is studied. The analysis is based on the extension of the statistical microcanonical multifragmentation model. The comparison with the data is done for central Xe+Sn collisions at 50 A MeV as measured by INDRA Collaboration.Comment: 9 pages, 2 figures; Talk given at the XXVII International Workshop on Gross Properties of Nuclei and Nuclear Excitation, Hirschegg (Austria), January 17 - 23, 199

Leading education into the future

Effective leadership is key to addressing enduring education issues in Aotearoa New Zealand. Our education system needs to be responsive within rapidly changing, uncertain, and complex contexts in which we face significant societal and global challenges. Key questions are provided to provoke critical and urgent conversations. These may lead to the development and implementation of effective policy and include an intentional focus on what we need to stop doing, what we need to keep doing, and what we need to start doing

Developing Resources to Build Statewide Capacity and Cohesion for Mathematics and Science Standards Implementation

Two resource development programs received funding as part of an initiative to help build capacity for mathematics and science standards implementation across California: The Fostering NGSS Implementation Program and the Fostering Math Standards Implementation Program.The programs drew on a diverse body of expertise and cross-regional and organizational leadership to encourage the creation of math and science resources that could both address common standards implementation challenges found statewide and promote equitable math and science opportunities for all students.This resulted in education leaders (e.g., county office of education, content specialists, coordinators, and non-profit representatives) working together in three teams for science resources, and one team for math.This brief focuses on these four teams' experiences with planning, developing, and piloting resources aimed at reducing the variability in and building capacity for mathematics and science standards implementation across California.It first examines aspirations and expectations for the resources, and perspectives on progress made toward aims. It then examines key processes and activities concerning leadership structures, planning and development, and piloting that teams engaged in to develop their products and attain their goals.The brief concludes with key challenges and lessons learned, then provides a list of recommendations for funding or implementing further resource development efforts requiring statewide collaboration and scale

Complex Challenges in Policy Implementation

Efforts to improve education occur in complex landscapes, where policy, research, history, experiences, and communities shape practice in ways that have both intended and unintended outcomes. These landscapes change over time; however, there appear to be several core challenges that persist and which likely influence why it is difficult for policy to improve education in intended, effective and sustainable ways. Drawing on New Zealand and international research, this position paper identifies some of these key challenges and explores possible leverage points to navigate these. These include developing adaptive expertise, engaging key stakeholders in decision making, and developing a learning culture

THE CANADA-FRANCE REDSHIFT SURVEY V: Global Properties of the Sample

The photometric and spectroscopic data of the CFRS survey of objects with 17.5 < I_{AB} < 22.5 are combined and analysed. The overall completeness is 85%. The redshift histogram of the sample is presented for 591 field galaxies with secure redshifts. The median redshift is z = 0.56, and the highest redshift observed is z = 1.3; 25 galaxies have z > 1 The distributions of magnitudes and colors demonstrate that galaxies at these high redshifts have very similar colors to those observed locally. The survey thus represents a major improvement in our knowledge of field galaxies at large look-back times. Only ~1% of the galaxies are as compact as stars (on images with FWHM ~ 0.9") and comparisons of the photometric and spectroscopic data show that only one galaxy was initially incorrectly classified spectroscopically as a star, and only two stars were misclassified as galaxies. It is demonstrated that the redshift distributions in the five fields are statistically consistent with each other, once the reduction in the effective number of independent galaxies due to small-scale clustering in redshift is taken into account. The photometric properties of the spectroscopically-unidentified objects indicate that most are likely to be galaxies rather than stars. At least half of these must have the same redshift distribution as the identified galaxies, and a combination of magnitudes, colors and compactness of the remaining unidentified galaxies is used to predict their redshifts. The majority are probably ordinary galaxies at the high redshift end of our sample, including some quiescent galaxies at z > 1.0, rather than some new or unusual population.Comment: 20 uuencoded postscript pages (first part) with 12 figures (second part). Also available at http://www.dao.nrc.ca/DAO/SCIENCE/science.html and coming soon on a CFRS homepage. Accepted June 19, scheduled for Dec 10 issue of Ap

Complex Challenges in Policy Implementation

Efforts to improve education occur in complex landscapes, where policy, research, history, experiences, and communities shape practice in ways that have both intended and unintended outcomes. These landscapes change over time; however, there appear to be several core challenges that persist and which likely influence why it is difficult for policy to improve education in intended, effective and sustainable ways. Drawing on New Zealand and international research, this position paper identifies some of these key challenges and explores possible leverage points to navigate these. These include developing adaptive expertise, engaging key stakeholders in decision making, and developing a learning culture