Scheduling Algorithm for Mission Planning and Logistics Evaluation (SAMPLE). Volume 2: Mission payloads subsystem description

The scheduling algorithm for mission planning and logistics evaluation (SAMPLE) is presented. Two major subsystems are included: The mission payloads program; and the set covering program. Formats and parameter definitions for the payload data set (payload model), feasible combination file, and traffic model are documented

Scheduling Algorithm for Mission Planning and Logistics Evaluation (SAMPLE). Volume 1: User's guide

An interactive computer program for automatically generating traffic models for the Space Transportation System (STS) is presented. Information concerning run stream construction, input data, and output data is provided. The flow of the interactive data stream is described. Error messages are specified, along with suggestions for remedial action. In addition, formats and parameter definitions for the payload data set (payload model), feasible combination file, and traffic model are documented

Elastohydrodynamic study of actin filaments using fluorescence microscopy

We probed the bending of actin subject to external forcing and viscous drag. Single actin filaments were moved perpendicular to their long axis in an oscillatory way by means of an optically tweezed latex bead attached to one end of the filaments. Shapes of these polymers were observed by epifluorescence microscopy. They were found to be in agreement with predictions of semiflexible polymer theory and slender-body hydrodynamics. A persistence length of $7.4 \pm 0.2 \mu$m could be extracted.Comment: RevTex, 4 pages, 5 eps figs, submitted to PR

Repeat Full Mouth Dental Rehabilitation under General Anesthesia for Medicaid Eligible Healthy Children who are High Caries Risk

Purpose: To evaluate the treatment of healthy children who are high caries risk and of low socioeconomic status and who require repeat full mouth dental rehabilitation (FMDR) under general anesthesia (GA). Methods: A retrospective chart review was performed on healthy Medicaid eligible patients who were initially between 18 months - 6 years of age who underwent FMDR under GA in the OR more than once at the Virginia Commonwealth University (VCU) School of Dentistry, Department of Pediatric Dentistry from January 2008 to December 2018. Biographical information for each patient was gathered into a REDCap™ Survey. Statistical analysis, chi-squared test with a significance level set at 0.05, was performed to determine the age, proximity to dental care, level of oral hygiene and preventive services, patient symptoms and treatment rendered during the first OR visit as compared to that rendered at the second OR visit. Results: A total of 46 subjects were included in the analysis. The majority of patients were referred for GA treatment from an outside provider (n=28, 61%). The median age of patients at the first GA was 29 months and 55.5 months at the second GA. There was a median of 1.6 years between the two GA appointments. The treatment success rate for treatments ranged from 25% for one surface composites to 94% for SSCs. Of the 125 teeth that received an SSC at GA 1, only five required additional treatment and three were extracted at the second GA. 75% of teeth that received a sealant at the first GA needed to be treated at the second GA. Conclusion: Results indicated differences in treatment planning strategies among pediatric dentists and suggested more aggressive treatment plans were more appropriate for patients who required advanced behavior guidance to prevent frequent GA exposure

A place of small canoes: An archaeological investigation of Cayucos, California

Located on the Central Coast, within the northern portion of Estero Bay, Cayucos remains an under-investigated area, and with over 8,000 years of human occupation there, it has the potential to inform about local and regional precontact history. Though relatively few archaeological investigations have occurred in Cayucos, by synthesizing studies in the area, a baseline of information emerges to build upon. This thesis reviews every recorded archaeological site with a precontact component, in the vicinity of Cayucos. These records, along with other relevant studies and theoretical framework, provide clues about the past associated with local settlement, technology, and the environment. Sources of information have been culled from site records and studies, authored by a variety of experts and non-experts including avocationalists, rock art scholars, residents, local CRM archaeologists, and others. One source of information comes from the orphaned Cayucos Bench Collection. Produced in the 1960s by the San Luis Obispo County Amateur Archaeologists, the collection is associated with 11 archaeological sites along the Estero Bluffs and includes site and artifact records, photographs, and a report. The collection is important because it represents the only artifact collection associated with the bluffs, a major portion of the research area. An aspect of this research includes comparative analysis of Cayucos with the Morro Bay Estuary, just south of Cayucos, in order to establish the relationship between these areas and identify regional patterns. The findings of this research begin to fill in the research gap remaining in the northern portion of Estero Bay

A Computational Procedure to Detect a New Type of High Dimensional Chaotic Saddle and its Application to the 3-D Hill's Problem

A computational procedure that allows the detection of a new type of high-dimensional chaotic saddle in Hamiltonian systems with three degrees of freedom is presented. The chaotic saddle is associated with a so-called normally hyperbolic invariant manifold (NHIM). The procedure allows to compute appropriate homoclinic orbits to the NHIM from which we can infer the existence a chaotic saddle. NHIMs control the phase space transport across an equilibrium point of saddle-centre-...-centre stability type, which is a fundamental mechanism for chemical reactions, capture and escape, scattering, and, more generally, ``transformation'' in many different areas of physics. Consequently, the presented methods and results are of broad interest. The procedure is illustrated for the spatial Hill's problem which is a well known model in celestial mechanics and which gained much interest e.g. in the study of the formation of binaries in the Kuiper belt.Comment: 12 pages, 6 figures, pdflatex, submitted to JPhys

Underwater radiated noise levels of a research icebreaker in the central Arctic Ocean

U.S. Coast Guard Cutter Healy\u27s underwater radiated noise signature was characterized in the central Arctic Ocean during different types of ice-breaking operations. Propulsion modes included transit in variable ice cover, breaking heavy ice with backing-and-ramming maneuvers, and dynamic positioning with the bow thruster in operation. Compared to open-water transit, Healy\u27s noise signature increased approximately 10 dB between 20 Hz and 2 kHz when breaking ice. The highest noise levels resulted while the ship was engaged in backing-and-ramming maneuvers, owing to cavitation when operating the propellers astern or in opposing directions. In frequency bands centered near 10, 50, and 100 Hz, source levels reached 190–200 dB re: 1 μPa at 1 m (full octave band) during ice-breaking operations

Preface "Nonlinear processes in oceanic and atmospheric flows"

Nonlinear phenomena are essential ingredients in many oceanic and atmospheric processes, and successful understanding of them benefits from multidisciplinary collaboration between oceanographers, meteorologists, physicists and mathematicians. The present Special Issue on ``Nonlinear Processes in Oceanic and Atmospheric Flows'' contains selected contributions from attendants to the workshop which, in the above spirit, was held in Castro Urdiales, Spain, in July 2008. Here we summarize the Special Issue contributions, which include papers on the characterization of ocean transport in the Lagrangian and in the Eulerian frameworks, generation and variability of jets and waves, interactions of fluid flow with plankton dynamics or heavy drops, scaling in meteorological fields, and statistical properties of El Ni\~no Southern Oscillation.Comment: This is the introductory article to a Special Issue on "Nonlinear Processes in Oceanic and Atmospheric Flows'', published in the journal Nonlinear Processes in Geophysics, where the different contributions are summarized. The Special Issue itself is freely available from http://www.nonlin-processes-geophys.net/special_issue103.htm