Minimum Delta 5, three-impulse transfer onto a trans-Mars asymptotic velocity vector

Optimum three-impulse transfer from circular Earth parking orbit onto asymptotic velocity vector characteristic of Mar

Development of KSC program for investigating and generating field failure rates. Volume 1: Summary and overview

A summary of the KSC program for investigating the reliability aspects of the ground support activities is presented. An analysis of unsatisfactory condition reports (RC), and the generation of reliability assessment of components based on the URC are discussed along with the design considerations for attaining reliable real time hardware/software configurations

Relationship Maintenance Behaviors and Marital Stability in Remarriage: The Examination of Stepfamily Constellations and Associated Challenges

Research on stepfamily life in the 21st century reveals unexplored variables at every turn. This is important because around half of American adults report close step-relationships and the challenges and demographic and relational differences for different types of stepfamilies remains unexplored. The first of these studies explored data for 879 husbands and wives couples to explore how positivity, negativity, and sexual interest levels differ depending which of the couple, both partners, or neither had previous children. Wives reported higher levels of marital instability and positivity than husbands. Marital instability was linked with one’s own and one’s partners’ negativity, and inversely related to one’s own and one’s partners’ positivity and sexual interest. The marital instability of those with children was related with their partner’s negativity. The second study investigated how the marital stability of different stepfamily configurations is related to difficulties associated with the social and family dimension, the role of the spouse, the role of a parent, and the role of a stepparent. Wives’ scores of marital instability and difficulties being a parent and stepparent were higher than husbands’ across remarriage types. Stepmothers reported the highest levels of parenting and stepparenting strain, especially stepmothers without children of their own. This implies stepfamily challenges can impact family-related stress and marital instability, with the most profound effects found for stepmothers with no biological children of their own. We found that parents with children seem to be sensitive to negativity and sexual interest from their partners as a measure of relationship functioning. Stepmothers experienced higher levels of marital instability and difficulties associated with being a parent and a stepparent and this is especially true for stepmothers who did not have children of their own. These findings suggest couples may benefit from strategies that decrease negativity, increase positivity and sexual interest, and help manage the stresses associated with being a parent and stepparent, especially for stepmother

Romantic Relationship Quality and Technological Communication: Examining the Roles of Attachment Representations and Rejection Sensitivity

Understanding normative developmental patterns in romantic relationships within cultural-historical contexts is a vital research agenda, and contemporary relationships develop amid pervasive socio-technological advancements. The role of technology in relationship functioning is relevant as romantic relationships are among the most important types of relationships and technology may substitute proximity, a core imperative of the attachment system. This study described patterns of computer-mediated communication (CMC) in young adult romantic relationships. Specifically, we hypothesized that core relational and personality constructs were linked to participants’ interpretations and reactions to CMC. Participants were 97 college students who provided global scores for rejection sensitivity, attachment representations, relationship satisfaction, and data about CMC with their romantic partner. Participants were prompted twice daily for two weeks to respond to questions assessing the nature and reaction to their most recent CMC with their romantic partner. Participants used texting more than any other CMC and communicated with romantic partners more than all others combined. Participants’ high relationship and communication satisfaction remained relatively constant. The 97 participants completed 1,616 mobile responses. Reported response latency was higher for men than women. Significant negative correlations emerged between interaction ratings, rejection sensitivity, and both insecure attachment dimensions. Regression analyses revealed only main effects for response latency and insecure attachment in predicting interaction ratings for women. No significant interactions emerged between response latency and attachment/response latency. For men, insecure attachment representations and rejection sensitivity demonstrated direct effects on interaction ratings. Avoidant attachment and response latency demonstrated a statistically significant interaction. Response latency and the interaction rating were negatively related only for men who scored low in avoidance. This study contributes to the body of literature assessing outcomes and qualities of romantic relationships in emerging adulthood. Technological communication is a key feature of young couples’ communication and appears more prevalent in romantic relationships than other relationships. Additionally, core relational and personality characteristics are substantially correlated to interpretations of momentto- moment interactions via technology

Letter from C. D. Bean to Representative Burdick Regarding Need for Barge to Ferry Trucks Across the Lake Created by the Garrison Dam, September 5, 1957

This letter, dated September 5, 1957, from Federal Supply Service Commissioner C. D. Bean to United States (US) Representative Usher Burdick responds to an inquiry related to transportation for the Three Affiliated Tribes across the Garrison Reservoir. The US Department of the Interior informed Bean\u27s office that the US Bureau of Indian Affairs does not have the authority to transfer ownership of property to the tribes. Bean recommends that the tribes purchase a surplus barge and jeeps as needed and encloses information about buying surplus property. The referenced enclosed booklet is not included with this document. See also: Letter from Representative Burdick to Clifton E. Mack Regarding Need for Barge to Ferry Trucks Across the Lake Created by the Garrison Dam, May 22, 1957https://commons.und.edu/burdick-papers/1350/thumbnail.jp

Study of basic bio-electrochemistry Sixth monthly progress report, 1-31 Aug. 1963

Contribution of hydrogen peroxide to electrode reaction in electrochemical cell by considering effect of catalyst on cell curren

Comparing key compositional indicators in Jupiter with those in extra-solar giant planets

Spectroscopic transiting observations of the atmospheres of hot Jupiters around other stars, first with Hubble Space Telescope and then Spitzer, opened the door to compositional studies of exoplanets. The James Webb Space Telescope will provide such a profound improvement in signal-to-noise ratio that it will enable detailed analysis of molecular abundances, including but not limited to determining abundances of all the major carbon- and oxygen-bearing species in hot Jupiter atmospheres. This will allow determination of the carbon-to-oxygen ratio, an essential number for planet formation models and a motivating goal of the Juno mission currently around JupiterComment: Submitted to the Astro2020 Decadal Survey as a white paper; thematic areas "Planetary Systems" and "Star and Planet Formation

Gemini/GMOS Transmission Spectral Survey: Complete Optical Transmission Spectrum of the hot Jupiter WASP-4b

We present the complete optical transmission spectrum of the hot Jupiter WASP-4b from 440-940 nm at R ~ 400-1500 obtained with the Gemini Multi-Object Spectrometers (GMOS); this is the first result from a comparative exoplanetology survey program of close-in gas giants conducted with GMOS. WASP-4b has an equilibrium temperature of 1700 K and is favorable to study in transmission due to a large scale height (370 km). We derive the transmission spectrum of WASP-4b using 4 transits observed with the MOS technique. We demonstrate repeatable results across multiple epochs with GMOS, and derive a combined transmission spectrum at a precision about twice above photon noise, which is roughly equal to to one atmospheric scale height. The transmission spectrum is well fitted with a uniform opacity as a function of wavelength. The uniform opacity and absence of a Rayleigh slope from molecular hydrogen suggest that the atmosphere is dominated by clouds with condensate grain size of ~1 um. This result is consistent with previous observations of hot Jupiters since clouds have been seen in planets with similar equilibrium temperatures to WASP-4b. We describe a custom pipeline that we have written to reduce GMOS time-series data of exoplanet transits, and present a thorough analysis of the dominant noise sources in GMOS, which primarily consist of wavelength- and time- dependent displacements of the spectra on the detector, mainly due to a lack of atmospheric dispersion correction.Comment: 23 pages, 12 figures, accepted for publication in AJ, 2017 July