Software Engineering Laboratory (SEL) relationships, models, and management rules

Over 50 individual Software Engineering Laboratory (SEL) research results, extracted from a review of published SEL documentation, that can be applied directly to managing software development projects are captured. Four basic categories of results are defined and discussed - environment profiles, relationships, models, and management rules. In each category, research results are presented as a single page that summarizes the individual result, lists potential uses of the result by managers, and references the original SEL documentation where the result was found. The document serves as a concise reference summary of applicable research for SEL managers

Block and Traditional School Schedules: Comparison of Student Achievement by MSAT Scores and High School Science Teachers\u27 Views

This study attempts to compare schools that are using a traditional scheduling format to a block scheduling format. Both critics and proponents acknowledge that the block schedule can provide more benefits than just student achievement. This study also attempts to address the perceptions of current Mississippi high school science teachers about the advantages and disadvantages to the block schedule as compared to the traditional schedule. This study utilized MSAT test scores from 69 (34 block and 35 traditional) public schools throughout the state of Mississippi. This data was used to test 10 hypotheses. Student achievement was measured using both the mean scores for the sehool and the percentage of students that passed each subject area test. To ascertain teacher perception., data was collected using a survey and completed with 100 (50 block and 50 traditional) teachers who are currently teaching high school science at a Mississippi public high school. Teacher perceptions were gathered for five basic areas: teacher preparation, laboratory based activities, content coverage, remediation, and discipline. This data was used to test two hypotheses. A simple t-£est was conducted with the data for each hypothesis. It was found thar schools utilizing a block schedule did have significantly higher mean scores than those on a traditional scheduling format on the Biology, U.S. History, and English II (multiple choice) tests, but there was no significant difference in the Algebra I and English II (essay) tests. With regard to the percentage of passing students, it was found that schools utilizing a block scheduling format did have a higher percentage of students nassing than those on a traditional schedule in the areas of Algebra I, Biology, and English |I (multiple choice)..but there was no significant difference in the areas of U.S. History and English II (essay). While not significant, the block did yield consistent higher results. When teachers were surveyed, it was found that current Mississippi high school science teachers preferred the block schedule to a traditional schedule. The researcher offers the following recommendations, a, block scheduling format can have several positive results, but administrators should not expect higher results just because they are on the block. Schools interested in the block need to offer many support systems for teachers

Temporal Variability of Upper-level Winds at the Eastern Range, Western Range and Wallops Flight Facility

Space launch vehicles incorporate upper-level wind profiles to determine wind effects on the vehicle and for a commit to launch decision. These assessments incorporate wind profiles measured hours prior to launch and may not represent the actual wind the vehicle will fly through. Uncertainty in the upper-level winds over the time period between the assessment and launch can be mitigated by a statistical analysis of wind change over time periods of interest using historical data from the launch range. Five sets of temporal wind pairs at various times (.75, 1.5, 2, 3 and 4-hrs) at the Eastern Range, Western Range and Wallops Flight Facility were developed for use in upper-level wind assessments. Database development procedures as well as statistical analysis of temporal wind variability at each launch range will be presented