Skylab overpass and verification of local environmental and spatial features

There are no author-identified significant results in this report

S-193 impulse response cross correlation

The author has identified the following significant results. A significant result was the realization that the phase information, normally lost in envelope detection and sampling, could have been preserved if the samples were taken at the peaks of the carrier frequency at intervals equal to a twice or an integral multiple of the integral number of its period. Thus the Skylab S193 Model 1 altimeter data does not contain phase information in accordance with the technical information obtained from NASA and Lockheed technical personnel. Another significant discovery was to learn that the eight return pulse samples don't belong to the same pulse but represent an average over many pulses

Probable deviations in altitude reading given by the LM altimeter for the most rough surface along a certain given trajectory

Random noise calculations in altitude reading of lunar module altimeter for rough surfaces targe

Lunar landing module reflectivity model

Lunar landing module reflectivity model based on Surveyor and Orbiter photographs of lunar craters, hills, and boulder

School connectedness & attachment: Predicted and moderated relationships with substance use, depression, and suicidality among teens at-risk

Research has demonstrated that parent-adolescent attachment security and school connectedness are protective factors that buffer teens from risk for substance use, depression, and suicidality. However, past research has examined these factors independently, and little is known about how secure attachment and school connectedness work in conjunction to reduce adolescent risk. The present study examined the moderating role of school connectedness on the relationship between parent-adolescent attachment security and substance use, depression, and suicidality among at-risk adolescents drawn from a clinical sample (N = 480; 60.5% female; Mage = 14.86). Findings indicated that for both females and males with a secure attachment, school connectedness made a positive impact to reduce symptoms of depression and suicidality, respectively. Similarly, for males with attachment avoidance, school connectedness weakened the impact of attachment avoidance on suicidality. However, for females with attachment anxiety, school connectedness was unable to reduce symptoms of depression

Analogies between EM and acoustic waves

Acoustic simulation of radar return - graph

Simulated LM static reflectivity data, for site P-2-6

Simulated lunar module static reflectivity data for site P-2-

Plane wave scattering from a rough surface with correlated large and small scale orders of roughness

Plane wave scattering from rough surface with correlated large and small scale orders of roughnes

Evaluating force field accuracy with long-time simulations of a tryptophan zipper peptide

We have combined a custom implementation of the fast multiple-time-stepping LN integrator with parallel tempering to explore folding properties of small peptides in implicit solvent on the time scale of microseconds. We applied this algorithm to the synthetic {\beta}-hairpin trpzip2 and one of its sequence variants W2W9. Each simulation consisted of over 12 {\mu}s of aggregated virtual time. Several measures of folding behavior showed convergence, allowing comparison with experimental equilibrium properties. Our simulations suggest that the electrostatic interaction of tryptophan sidechains is responsible for much of the stability of the native fold. We conclude that the ff99 force field combined with ff96 {\phi} and {\psi} dihedral energies and implicit solvent can reproduce plausible folding behavior in both trpzip2 and W2W9.Comment: 10 pages, 11 figures, submitted to the Journal of Chemical Physics on June 28, 201