A simulation for gravity fine structure recovery from high-low GRAVSAT SST data

Covariance error analysis techniques were applied to investigate estimation strategies for the high-low SST mission for accurate local recovery of gravitational fine structure, considering the aliasing effects of unsolved for parameters. Surface density blocks of 5 deg x 5 deg and 2 1/2 deg x 2 1/2 deg resolution were utilized to represent the high order geopotential with the drag-free GRAVSAT configured in a nearly circular polar orbit at 250 km. altitude. GEOPAUSE and geosynchronous satellites were considered as high relay spacecraft. It is demonstrated that knowledge of gravitational fine structure can be significantly improved at 5 deg x 5 deg resolution using SST data from a high-low configuration with reasonably accurate orbits for the low GRAVSAT. The gravity fine structure recoverability of the high-low SST mission is compared with the low-low configuration and shown to be superior

Two-point Taylor series expansions

Coefficients calculated for Taylor series expansion about two points - application of Taylor expansion to two-body proble

Optimized computation with recursive power series integration

Optimized computation with recursive power series integration, applied to three body proble

Long-run Patterns of Labour Market Polarisation: Evidence from German Micro Data

The past four decades have witnessed dramatic changes in the structure of employment. In particular, the rapid increase in computational power has led to large-scale reductions in employment in jobs that can be described as intensive in routine tasks. These jobs have been shown to be concentrated in middle skill occupations. A large literature on labour market polarisation characterises and measures these processes at an aggregate level. How- ever to date there is little information regarding the individual worker adjustment processes related to routine- biased technological change. Using an administrative panel data set for Germany, we follow workers over an ex- tended period of time and provide evidence of both the short-term adjustment process and medium-run effects of routine task intensive job loss at an individual level. We initially demonstrate a marked, and steady, shift in em- ployment away from routine, middle-skill, occupations. In subsequent analysis, we demonstrate how exposure to jobs with higher routine task content is associated with a reduced likelihood of being in employment in both the short term (after one year) and medium term (five years). This employment penalty to routineness of work has increased over the past four decades. More generally, we demonstrate that routine task work is associated with reduced job stability and more likelihood of experiencing periods of unemployment. However, these negative ef- fects of routine work appear to be concentrated in increased employment to employment, and employment to unemployment transitions rather than longer periods of unemployment

Outer-Sphere Effects on Reduction Potentials of Copper Sites in Proteins: The Curious Case of High Potential Type 2 C112D/M121E Pseudomonas aeruginosa Azurin

Redox and spectroscopic (electronic absorption, multifrequency electron paramagnetic resonance (EPR), and X-ray absorption) properties together with X-ray crystal structures are reported for the type 2 Cu^(II) C112D/M121E variant of Pseudomonas aeruginosa azurin. The results suggest that Cu^(II) is constrained from interaction with the proximal glutamate; this structural frustration implies a “rack” mechanism for the 290 mV (vs NHE) reduction potential measured at neutral pH. At high pH (~9), hydrogen bonding in the outer coordination sphere is perturbed to allow axial glutamate ligation to Cu^(II), with a decrease in potential to 119 mV. These results highlight the role played by outer-sphere interactions, and the structural constraints they impose, in determining the redox behavior of transition metal protein cofactors

Lower Bounds on the Ground State Entropy of the Potts Antiferromagnet on Slabs of the Simple Cubic Lattice

We calculate rigorous lower bounds for the ground state degeneracy per site, $W$, of the $q$-state Potts antiferromagnet on slabs of the simple cubic lattice that are infinite in two directions and finite in the third and that thus interpolate between the square (sq) and simple cubic (sc) lattices. We give a comparison with large-$q$ series expansions for the sq and sc lattices and also present numerical comparisons.Comment: 7 pages, late

Shaped nozzles for cryogenic buffer gas beam sources

Cryogenic buffer gas beams are important sources of cold molecules. In this work we explore the use of a converging-diverging nozzle with a buffer-gas beam. We find that, under appropriate circumstances, the use of a nozzle can produce a beam with improved collimation, lower transverse temperatures, and higher fluxes per solid angle

Emotion Regulation And Coping Motives: An Ema Study Of The Path Between Negative Affect And Craving

Negative affect (NA) is a known precipitant of cravings, and each are robust predictors of lapses, making this pathway an excellent target for lapse prevention in opioid treatment. As emotion dysregulation arises from unmitigated NA, deficits in emotion regulation (ER) contribute to cravings in part by worsening distress, although the form these deficits take remains unclear. Coping motives are relevant in the context of NA and show robust associations with ER difficulties. Further, coping motives have demonstrated a similar role in exacerbating the effect NA has on cravings. This study aimed to explore the conditional indirect effects of ER deficits (in the form high reliance on maladaptive strategies and insufficient use of adaptive strategies) on NA and craving via the conditional effects of coping motives in opioid use in a piecemeal approach. Treatment seeking opioid users less than 90 days clean (N=57) completed dispositional measures of using motives and ER repertoires followed by a 7-day ecological momentary assessment protocol indexing ratings of NA and craving across each day. General and mixed-effects linear models were fit to test hypothesized effects. Results indicate coping, enhancement, and pain, but not social motives predict maladaptive ER and no using motives predict adaptive ER. Coping motives and within-person fluctuations in NA interactively predict craving, with simple effects suggesting high dispositional coping motives exacerbate the effect of NA on craving and individual differences explain the variability in this effect. Conditional indirect effect of ER deficits via coping motives could not be tested due to insufficient statistical power, but the total effect of maladaptive repertoires and within-person fluctuations in NA interactively predict craving at a trend level. Simple effects suggest high maladaptive repertoires exacerbate the effect of NA on craving and individual differences explain the variability in this effect. Adaptive ER interactions were not interpretable. These finding suggest understanding using motives and reliance on maladaptive ER may help identify increased lapse risk in clinical settings