Student Voice: The Beacon in Our Journey to School Improvement

Is it possible to reduce the achievement gap simply by implementing effective instructional practices? Francis Scott Key Middle School in Montgomery County Maryland learned that building the cultural proficiency of teachers had to move beyond strategies. Francis Scott Key’s Student Voice Project helped both teachers and students transform their thinking about instruction, communication, and school improvement

KETERBUKAAN POLITIK DALAM DEMOKRASI PANCASILA: Tinjuan Etika Politik atas Kehidupan Demokrasi di Indonesia

Keterbukaan politik dalam Demokrasi Pancasila merupakan keterbukaan yang berarti umpan balik di mana rakyat sebagai warga negara memiliki hak untuk mengontrol, mengkritik dan memberikan usul serta saran atau dukungan pemerintah. Pemerintahan dalam melaksanakan pemerintahan harus secara terbuka di hadapan publik, agar publik mampu menilai apakah kebijakan pemerintah menjamin hak-hak warga negara dan menegakkan keadilan, ataukah kebijakan itu hanya untuk melestarikan kekuasaan rezim yang sedang berkuasa atau kelompok orang di sekitar kekuasaan. Perjuangan untuk menegakkan keterbukaan politik dalam kehidupan demokrasi Pancasila sangat penting dalam kehidupan demokrasi. Usaha warga negara yang dilakukan merupakan kebijakan dalam rangka membela nilai-nilai yang sangat berhubungan dengan persoalan hak asasi manusia dan kesejahteraan umu

Precision planar drift chambers and cradle for the TWIST muon decay spectrometer

To measure the muon decay parameters with high accuracy, we require an array of precision drift detector layers whose relative position is known with very high accuracy. This article describes the design, construction and performance of these detectors in the TWIST (TRIUMF Weak Interaction Symmetry Test) spectrometer.Comment: 44 pages, 16 Postscript figures, LaTeX2e, uses Elsevier class elsart.cls, package graphicx, submitted to Nuclear Instruments & Methods in Physics Researc

Role of heavy-meson exchange in pion production near threshold

Recent calculations of $s$-wave pion production have severely underestimated the accurately known $pp\rightarrow pp\pi^0$\ total cross section near threshold. In these calculations, only the single-nucleon axial-charge operator is considered. We have calculated, in addition to the one-body term, the two-body contributions to this reaction that arise from the exchange of mesons. We find that the inclusion of the scalar $\sigma$-meson exchange current (and lesser contributions from other mesons) increases the cross section by about a factor of five, and leads to excellent agreement with the data. The results are neither very sensitive to changes in the distorting potential that generates the $NN$ wave function, nor to different choices for the meson-nucleon form factors. We argue that $pp\rightarrow pp\pi^0$\ data provide direct experimental evidence for meson-exchange contributions to the axial current.Comment: 28 Pages, IU-NTC #93-0

Cross section and analyzing power of pol{p}p -> pn pi+ near threshold

The cross section and analyzing power of the pol{p}p -> pn pi+ reaction near threshold are estimated in terms of data obtained from the pol{p}p -> d pi+ and pp -> pp pi0 reactions. A simple final state interaction theory is developed which depends weakly upon the form of the pion-production operator and includes some Coulomb corrections. Within the uncertainties of the model and the input data, the approach reproduces well the measured energy dependence of the total cross section and the proton analyzing power at a fixed pion c.m. angle of 90deg, from threshold to T_p = 330 MeV. The variation of the differential cross section with pion angle is also very encouraging.Comment: 20 pages, Latex including 4 eps figure

Dependence of pp->pp pi0 near Threshold on the Spin of the Colliding Nucleons

A polarized internal atomic hydrogen target and a stored, polarized beam are used to measure the spin-dependent total cross section Delta_sigma_T/sigma_tot, as well as the polar integrals of the spin correlation coefficient combination A_xx-A_yy, and the analyzing power A_y for pp-> pp pi0 at four bombarding energies between 325 and 400 MeV. This experiment is made possible by the use of a cooled beam in a storage ring. The polarization observables are used to study the contribution from individual partial waves.Comment: 6 pages, 1 table, 4 figures, corrected equations 2 and