A citation history of measurements of Newtons constant of Gravity

We created and analyzed a citation history of papers covering measurements of Newtons constant of gravity from 1686 to 2016. Interest concerning the true value of the gravitational constant was most intense in the late 90s to early 2000s and is gaining traction again in the present. Another network consisting of the same papers was created using citations from databases to display the prominence of papers on Newtons constant in the wider scientific community. In general, papers that were important in one network remained important in the other while papers that had little importance in one network remained unimportant in the other. The US contributes the most to literature on the topic both in where journals were published and where the work was done; however, many other countries, such as China, Russia, France, Germany, Switzerland, and the UK also provide many papers on Newtons G. Work done within certain countries tends to be considered more important and cited more often within that country. Recent efforts promoting international collaboration may have an impact on this trend

Turbulence modeling for sharp-fin-induced shock wave/turbulent boundary-layer interactions

Solutions of the Reynolds averaged Navier-Stokes equations are presented and compared with a family of experimental results for the 3-D interaction of a sharp fin induced shock wave with a turbulent boundary layer. Several algebraic and two equation eddy viscosity turbulence models are employed. The computed results are compared with experimental surface pressure, skin friction, and yaw angle data as well as the overall size of the interaction. Although the major feature of the flow fields are correctly predicted, several discrepancies are noted. Namely, the maximum skin friction values are significantly underpredicted for the strongest interaction cases. These and other deficiencies are discussed

The potential hazard of staphylococci and micrococci to human subjects in a life support systems evaluator while on a simulated GT-7 mission Final report, 19 Sep. - 1 Nov. 1965

Potential hazard of staphylococci and micrococci to human subjects in life support system

Intersecting Shock-Wave/Turbulent Boundary-Layer Interactions at Mach 8.3

Experimental data for two three-dimensional intersecting shock-wave/turbulent boundary-layer interaction flows at Mach 8.3 are presented. The test bodies, composed of two sharp fins fastened to a flat-plate test bed, were designed to generate flows with varying degrees of pressure gradient, boundary-layer separation, and turning angle. The data include surface pressure and heat transfer distributions as well as mean flow-field surveys both in the undisturbed and interaction regimes. The data are presented in a convenient form to be used to validate existing or future computational models of these hypersonic flows. The data are also on a 3.5-inch diskette included and are available through E-mail

Documentation of Two- and Three-Dimensional Hypersonic Shock Wave/Turbulent Boundary Layer Interaction Flows

Experimental data for a series of two- and three-dimensional shock wave/turbulent boundary layer interaction flows at Mach 7 are presented. Test bodies, composed of simple geometric shapes, were designed to generate flows with varying degrees of pressure gradient, boundary-layer separation, and turning angle. The data include surface-pressure and heat-transfer distributions as well as limited mean-flow-field surveys in both the undisturbed and the interaction regimes. The data are presented in a convenient form for use in validating existing or future computational models of these generic hypersonic flows

Flow routing in mangrove forests: field data obtained in Trang, Thailand

Mangroves grow in the intertidal parts of sheltered tropical coastlines, facilitating coastal stabilization and wave attenuation. Mangroves are widely threatened nowadays, although past studies have indicated their contribution to coastal safety. Most of these studies were based on numerical modeling however and a proper database with field observations is lacking yet. This paper presents part of the results of an extensive field campaign in a mangrove area in Trang Province, Thailand. The study area covers the outer border of an estuarine mangrove creek catchment. Data have been collected on elevation, vegetation, water levels, flow directions and flow velocities throughout this study area. Due to the tough conditions in the field, developing a suitable method for data collection and processing has been a major challenge in this study. Analysis of the hydrodynamic data uncovers the change of flow directions and velocities throughout a mangrove creek catchment over one tidal cycle. In the initial stages of flooding and the final stages of ebbing, creeks supply water to the lower elevated parts of the mangroves. In between these stages, the entire forest bordering the estuary is flooded and flow directions are perpendicular to the forest fringe. Flow velocities within the creeks are still substantially higher than those within the forest, as the creeks also supply water to the back mangroves. These insights in flow routing are promising for the future analysis of sediment input and distribution in mangroves

Dreamers X Doers

The primary themes within Dreamers X Doers revolve around the need for social justice and the lack of collaboration between those who are doers and those who only dream of an ideal world. As a dreamer, I emphasize the desire for fellow dreamers to rise up and bring about the change they know needs to happen. I address the tendency of dreamers to live inside their own minds and to procrastinate, but I also make known the capacity for these dreamers to take part in the efforts towards social change that they feel so passionately about. All in all, dreamers and doers are not that different from one another. In fact, they need each other

Perspectives of Hospitalized Children and Parents on the Quality of the Children’s Nursing Care

Three million children are hospitalized annually, yet large-scale research is sparse on children’s perceptions of their hospital experiences. Parents routinely receive and complete post-discharge “patient” satisfaction questionnaires. Yet, research shows that children’s and parents’ perceptions of children’s emotions and experiences are often dissimilar. Purpose: 1) Identify characteristics of nursing care that are most important to hospitalized children; 2) Compare hospitalized children’s and parents’ perspectives on quality of nursing care and children’s current quality of life. Subjects: The sample included 496 children, ages 6 to 21, in a 400-bed children’s hospital (73% white, 20.29% black). Methods: A cross-sectional research design involved individual interviews with children about what they liked and disliked about their nursing care, and responses to the 6-item Pediatric Quality of Life-Present Functioning (PEDS-QL-PF) Scale. Independently, parents answered the same questions as they believed their children would respond. Findings: Parents consistently underestimated what their children would say about their nurses. Children reported 10 nurse behaviors more often than parents: checks on me often, talks and listens to me, gives me medication, gives me things to do, responsive to my needs, brings me food or drinks, helps me do things, plays with me, laughs and jokes with me, and gives me respect and privacy (all p<0.05). Children reported 3 of 7 nurse behaviors that they disliked more frequently than parents including uncomfortable procedures, painful experiences, and wakes me up (all p<0.001). Parents mentioned no nurse behaviors significantly more often than their children. Fewer children than their parents reported experiencing six PEDS-QL-PF items: afraid, sad, angry, worried, tired, and pain (all p<0.001). Implications: Children and parents disagreed on the importance of 10 of 14 nurse behaviors that children said they liked and 3 of 7 nurse behaviors that they disliked. Parents consistently overestimated their children’s current symptoms and emotions. Nursing assessments that include quality of care and current quality of life from the children’s perspectives will greatly enhance the children’s hospital experiences.No embargoAcademic Major: Nursin