Envisioning future parenthood among bisexual, lesbian, and heterosexual women

For many individuals, becoming a parent is an important milestone. The current study examined attitudes and beliefs about parenting among a sample of 196 self-identified bisexual, lesbian, and heterosexual women. Results showed no differences by sexual orientation for women’s desires and intentions to have children, their idealization of parenthood, and perceptions of their parental self-efficacy (i.e., their ability to care for a child). In contrast, differences did emerge by sexual orientation in aspects such as partner expectations as well as professional intentions (i.e., wanting a permanent position before becoming a parent). Bisexual women tended to anticipate lower partner support compared to heterosexual women. Lesbian women, however, had a greater preference to work full-time during parenthood and wanted a permanent position before becoming a parent compared to both bisexual and heterosexual women. Implications are discussed of how bisexual women’s perceptions of parenthood are both similar to and distinct from lesbian and heterosexual women

Communication about children’s origins among same-gender adoptive parent families in Belgium, France, and Spain

Objective: This study explored communication about children’s origins among same-gender parent adoptive families. Background: Although this topic has been widely researched among different-gender parent adoptive families, communication about origins among those with same-gender parents, as well as sexual minority identity dynamics relevant to this crucial task, remain unexplored. Method: A sample of same-gender adoptive couples (N = 31) from Belgium, France, and Spain with children aged between 4 and 18 years (Mage = 8.9 years) participated in a semistructured interview and a graphic projective test aimed at explore their feelings and communication process about their adopted child’s birth family. Results: Inductive thematic analysis yielded a continuum of three main stances conveyed by adoptive parents regarding their child’s origins: (a) critical/minimization, (b) cautious/uncertainty, and (c) open/validation. The first (critical/minimization) was associated with experiences of sexual minority stigma and poorer communication about children’s origins and sexual minority family-related issues, while the second (cautious/uncertainty) was characterized by mixed feelings (i.e., at times open, at times critical) in communicating about origins and parents’ sexual minority experiences. The third (open/validation) was associated with positive feelings toward adoptive and sexual minority family statuses, as well as identity integration as a lesbian or gay parent and low internalized sexual stigma. Conclusion: Our findings underline the importance of sexual minority identity issues in relation to communication about children’s origins in same-gender parent adoptive families. Implications: These findings have important implications for both adoption assessment and therapeutic work with same-gender adoptive parent families

Error sources and data limitations for the prediction ofsurface gravity: a case study using benchmarks

Gravity-based heights require gravity values at levelled benchmarks (BMs), whichsometimes have to be predicted from surrounding observations. We use EGM2008 andthe Australian National Gravity Database (ANGD) as examples of model and terrestrialobserved data respectively to predict gravity at Australian national levelling network(ANLN) BMs. The aim is to quantify errors that may propagate into the predicted BMgravity values and then into gravimetric height corrections (HCs). Our results indicatethat an approximate ±1 arc-minute horizontal position error of the BMs causesmaximum errors in EGM2008 BM gravity of ~ 22 mGal (~55 mm in the HC at ~2200 melevation) and ~18 mGal for ANGD BM gravity because the values are not computed atthe true location of the BM. We use RTM (residual terrain modelling) techniques toshow that ~50% of EGM2008 BM gravity error in a moderately mountainous regioncan be accounted for by signal omission. Non-representative sampling of ANGDgravity in this region may cause errors of up to 50 mGals (~120 mm for the Helmertorthometric correction at ~2200 m elevation). For modelled gravity at BMs to beviable, levelling networks need horizontal BM positions accurate to a few metres, whileRTM techniques can be used to reduce signal omission error. Unrepresentative gravitysampling in mountains can be remedied by denser and more representative re-surveys,and/or gravity can be forward modelled into regions of sparser gravity

The computation of the geoid model in the state of São Paulo using two methodologies and GOCE models

The purpose of this manuscript is to compute and to evaluate the geoid model in the State of São Paulo from two methodologies (Stokes' integral through the Fast Fourier Transform - FFT and Least Squares Collocation - LSC). Another objective of this study is to verify the potentiality of GOCE-based. A special attention is given to GOCE mission. The theory related to Stokes' integral and Least Squares Collocation is also discussed in this work. The spectral decomposition was employed in the geoid models computation and the long wavelength component was represented by EGM2008 up to degree and order 150 and 360 and GOCE-based models up to 150. The models were compared in terms of geoid height residual and absolute and relative comparisons from GPS/leveling and the results show consistency between them. In addition, a comparison in the mountain regions was carried out to verify the methodologies behavior in this area; the results showed that LSC is less consistent than FFT

The electromagnetic counterpart of the binary neutron star merger LIGO/Virgo GW170817. I. Discovery of the optical counterpart using the Dark Energy Camera

We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational wave emission, GW170817. Our observations commenced 10.5 hours post-merger, as soon as the localization region became accessible from Chile. We imaged 70 deg2 in the i and z bands, covering 93% of the initial integrated localization probability, to a depth necessary to identify likely optical counterparts (e.g., a kilonova). At 11.4 hours post-merger we detected a bright optical transient located 10:600 from the nucleus of NGC4993 at redshift z = 0:0098, consistent (for H0 = 70 km s-1 Mpc-1) with the distance of 40±8 Mpc reported by the LIGO Scientific Collaboration and the Virgo Collaboration (LVC). At detection the transient had magnitudes i=17.3 and z=17.4, and thus an absolute magnitude of Mi = -15.7, in the luminosity range expected for a kilonova. We identified 1,500 potential transient candidates. Applying simple selection criteria aimed at rejecting background events such as supernovae, we find the transient associated with NGC4993 as the only remaining plausible counterpart, and reject chance coincidence at the 99.5% confidence level. We therefore conclude that the optical counterpart we have identified near NGC4993 is associated with GW170817. This discovery ushers in the era of multi-messenger astronomy with gravitational waves, and demonstrates the power of DECam to identify the optical counterparts of gravitational-wave sources

Envisioning future parenthood among bisexual, lesbian, and heterosexual women.

For many individuals, becoming a parent is an important milestone. The current study examined attitudes and beliefs about parenting among a sample of 196 self-identified bisexual, lesbian, and heterosexual women. Results showed no differences by sexual orientation for women’s desires and intentions to have children, their idealization of parenthood, and perceptions of their parental self-efficacy (i.e., their ability to care for a child). In contrast, differences did emerge by sexual orientation in aspects such as partner expectations as well as professional intentions (i.e., wanting a permanent position before becoming a parent). Bisexual women tended to anticipate lower partner support compared to heterosexual women. Lesbian women, however, had a greater preference to work full-time during parenthood and wanted a permanent position before becoming a parent compared to both bisexual and heterosexual women. Implications are discussed of how bisexual women’s perceptions of parenthood are both similar to and distinct from lesbian and heterosexual women