Further results related to the turbulent boundary layer with slot injection of helium

Data from an experiment involving the slot injection of helium into a turbulent boundary layer in air are analyzed in terms of unconditioned and conditioned Favre-averages. The conditioning is based on two levels of helium concentration so that the contributions to the unconditioned statistics from air, helium, and mixture of these two gases can be determined. The distributions of intermittency associated with the two helium levels establish the domains of influence of air, helium, and mixture

Empowering adolescents: A multiple case study of U.S. Montessori high schools

The standards-based, teach-and-test methods that have come to proliferate secondary education since the inception of the No Child Left Behind Act (NCLB) fail to adequately prepare students for higher education and employment. This system lacks opportunities for developing 21st century skills such as higher-level thinking, problem solving, and group dynamics, as well as opportunities for fostering spiritual growth and personal development. This problem impacts graduates of U.S. high schools because they are unprepared for higher education and the 21st century workplace. Using qualitative multiple case study methodology, this study examined five U.S. Montessori high schools through the lens of cultural-historical activity theory. Interview and blog-based focus group responses and document data were coded line-by-line using predetermined categories and codes as well as open coding. The coded data were analyzed by individual case and then collectively. Findings revealed that education in these settings addressed all areas of development and fostered 21st century skills. Some characteristics that typify Montessori education at lower levels, such as multi-age classes and the prepared environment, played less significant or different roles in the high school programs. Characteristics that were prominent across the cases included use of place-based, experiential learning; building of caring, family-like staff/student relationships; and emphasis on social development. Implications for social change within the Montessori community include informing practice at existing schools and development of teacher education programs. In the broader education community, the consistency in program emphasis, despite diverse school circumstances, suggests a Montessori approach may facilitate social change by inspiring a fresh approach to school reform in high schools

Progress toward cascade cells made by OM-VPE

Organometallic Vapor Phase Epitaxy (COM-VPE) was used to make a sophisticated monolithic cascade cell, with a peak AMO efficiency of 16.6%, not corrected for 14% grid coverage. The cell has 9 epitaxial layers. The top cell is 1.35 microns thick with a 0.1 micron thich emitter. Both cells are heteroface n-p structures. The cascade cell uses metal interconnects. Details of growth and processing are described

Directed evolution of a fungal β-glucosidase in Saccharomyces cerevisiae

Additional file 1. Table S1. Primers used in this study

Beyond the DSM-IV: Assumptions, Alternatives, and Alterations

Current diagnostic processes reflect the limitations and utility of the framework of the Diagnostic and Statistical Manual of Mental Disorders (4th ed.; DSM-IV; American Psychiatric Association, 1994). Clinical information in the DSM-IV\u27s 5-axis system almost exclusively focuses on weaknesses and pathology and is summarized in a flawed categorical system. Hence, the authors describe 3 adjunctive, or alternative, means of conceptualizing behavior; several means of altering the current DSM-IV system; and 2 future directions in the diagnosis of strengths

Chromosomal Location of Lectin Genes Indicates They Are Not the Basis of Rhizobium Strain Specificity Mutations Identified in Pea (Pisum sativum L.)

A lectin gene family is located on linkage group 7 in pea. The lectin genes are arranged as a cluster, with no recombination observed within the multigene family. A lectinlike cDNA clone, pEA207, and eight DNA fragments generated by random priming also were mapped in the region of the lectin genes. None of the known pea mutants altering Rhizobium leguminosarum strain specificity map to this region of the genome, and therefore their altered specificities appear not to be directly produced by mutations in the lectin gene

On the Early History of Current Algebra

The history of Current Algebra is reviewed up to the appearance of the Adler-Weisberger sum rule. Particular emphasis is given to the role current algebra played for the historical struggle in strong interaction physics of elementary particles between the S-matrix approach based on dispersion relations and field theory. The question whether there are fundamental particles or all hadrons are bound or resonant states of one another played an important role in this struggle and is thus also regarded.Comment: 17 page