Application of Titan III Guidance and Navigation System to Lunar Missions

The current series of Titan III R and D flights includes missions of considerable complexity. The mission profiles are designed to take full advantage of the combination of the Titan IIIC vehicle configuration and of the accuracy and flexibility provided by the AC Electronics Guidance and Navigation (G & N) System. The fact that the Titan IIIC is capable of completing a synchronous equatorial mission from an ETR launch implies that a lunar impact mission could be flown with a payload having two to three times the synchronous payload weight. This paper discusses the changes which would be required in the present Titan III guidance hardware and software to perform a certain class of lunar missions. The changes considered are those that require minimum modification of the existing Operating Ground Equipment (OGE), Missile Guidance Computer (MGC) ground programs, and MGC flight equations. The accuracy of the G & N System is of interest to the payload user, since any decrease in the midcourse correction requirements can immediately be translated into an increase in useful payload weight. One of the primary considerations in the discussion of system modifications is that of minimizing system errors. The propagation of system errors and the lunar impact sensitivity coefficients are treated in some detail

The Locus Ceruleus in PTSD

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Contingent teaching through low-tech audience response systems

For one-shot instruction sessions, formative assessment is the most feasible method for gathering data to aid contingent teaching, the practice of adapting to learners’ needs. Various technologies aid in the quick and efficient gathering of data on student learning in the classroom that can be used for formative assessment. Outside of a library teaching space or computer classroom, it is difficult to know what technology is available, what technology students can access, and how best to aid data collection that engages students, provides meaningful data to allow for contingent teaching, and is not dependent on student technology ownership. A low-tech audience response system has provided an opportunity to collect data on student learning and enable contingent teaching. This project report contributes to the field of information literacy research describing how a low-tech audience response system supports contingent teaching and innovates practice in different classroom situations

Cascade Dynamics of Multiplex Propagation

Random links between otherwise distant nodes can greatly facilitate the propagation of disease or information, provided contagion can be transmitted by a single active node. However we show that when the propagation requires simultaneous exposure to multiple sources of activation, called multiplex propagation, the effect of random links is just the opposite: it makes the propagation more difficult to achieve. We calculate analytical and numerically critical points for a threshold model in several classes of complex networks, including an empirical social network.Comment: 4 pages, 5 figures, for similar work visit http://hsd.soc.cornell.edu and http://www.imedea.uib.es/physdep

Pilot Trial of an Emergency Department–based Intervention to Promote Child Passenger Safety Best Practices

BackgroundDespite demonstrated effectiveness of child restraint systems (CRSs), use remains suboptimal. In this randomized pilot trial, we sought to determine the feasibility, acceptability, and potential efficacy of “Tiny Cargo, Big Deal” an ED‐based intervention to promote guideline‐concordant size‐appropriate CRS use.MethodsParents of children < 11 years old were recruited in two EDs and randomized in a 2 × 2 factorial design to four conditions: 1) generic information sheet, 2) tailored brochure mailed after the ED visit, 3) a single motivational interviewing‐based counseling session in the ED, and 4) full intervention (counseling session plus tailored brochure). We assessed feasibility (recruitment, completion, follow‐up rates) and acceptability (parent attitudes, uptake of information) in the ED, at 1 month and at 6 months. We obtained preliminary estimates of effect sizes of the intervention components on appropriate CRS use at 6‐month follow‐up.ResultsOf the 514 parents assessed for eligibility, 456 met inclusion criteria and 347 consented to participate. Enrolled parents were mostly mothers (88.1%); 48.7% were 18 to 29 years old; 52.5% were non‐Hispanic, white; and 65.2% reported size‐appropriate CRS use. Completion rates were 97.7% for baseline survey, 81.6% for counseling, 51.9% for 1‐month follow‐up, and 59.3% for 6‐month follow‐up. In the ED, 70.5% rated thinking about child passenger safety in the ED as very helpful. At 1 month, 70.0% expressed positive attitudes toward the study. Of 132 parents who reported receiving study mailings, 78.9% reviewed the information. Parents randomized to the full intervention demonstrated an increase (+6.12 percentage points) and other groups a decrease (–1.69 to –9.3 percentage points) in the proportion of children reported to use a size‐appropriate CRS at 6‐month follow‐up.ConclusionsSuboptimal CRS use can be identified and intervened upon during a child’s ED visit. A combined approach with ED‐based counseling and mailed tailored brochures shows promise to improve size‐appropriate CRS use.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/150596/1/acem13687_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/150596/2/acem13687.pd

Results of the Kentucky Worksite Assessment: Utilization of the CDC’s Health ScoreCard

Study Objectives and Research Approach A Health Impact Assessment (HIA) conducted in 2011-2012 of a proposed Kentucky Worksite Wellness Tax Credit highlighted gaps in the data available on worksite wellness programs in the Commonwealth of Kentucky. Conducting a state-wide assessment of worksite wellness programs was a recommendation that resulted from this HIA. The purpose of the assessment is to: 1) Identify the number of comprehensive worksite health promotion programs in Kentucky. 2) Determine the health needs of worksites in Kentucky. By Identifying current wellness practices in Kentucky, better tools and support can be provided at a state level to assist organizations to implement results-oriented wellness programs. As worksite wellness science continues to advance and the expectations of successful outcomes continue to increase, more will be required of those in charge of these programs. Upon receiving approval from WKU’s Institutional Review Board (IRB), 1,200 randomly drawn businesses received a questionnaire via email. Two-week increments were allowed for workplaces that needed reminders or more time to complete the survey. The survey began in May 2013 and closed in October 2013. Data was analyzed for outstanding themes, which will form the bases for decisions made on the needs of worksite-wellness programs in Kentucky. Data was analyzed further — descriptively and inferentially — to determine worksite factors that contribute to the increasing trends of chronic diseases in the workplace