We report the first longitudinal-transverse separation of the deeply virtual exclusive π^{0} electroproduction cross section off the neutron and coherent deuteron. The corresponding four structure ...functions dσ_{L}/dt, dσ_{T}/dt, dσ_{LT}/dt, and dσ_{TT}/dt are extracted as a function of the momentum transfer to the recoil system at Q^{2}=1.75 GeV^{2} and x_{B}=0.36. The ed→edπ^{0} cross sections are found compatible with the small values expected from theoretical models. The en→enπ^{0} cross sections show a dominance from the response to transversely polarized photons, and are in good agreement with calculations based on the transversity generalized parton distributions of the nucleon. By combining these results with previous measurements of π^{0} electroproduction off the proton, we present a flavor decomposition of the u and d quark contributions to the cross section.
The Spin Asymmetries of the Nucleon Experiment (SANE) performed inclusive, double-polarized electron scattering measurements of the proton at the Continuous Electron Beam Accelerator Facility at ...Jefferson Lab. A novel detector array observed scattered electrons of four-momentum transfer 2.5<Q2<6.5GeV2 and Bjorken scaling 0.3<x<0.8 from initial beam energies of 4.7 and 5.9 GeV. Employing a polarized proton target whose magnetic field direction could be rotated with respect to the incident electron beam, both parallel and near perpendicular spin asymmetries were measured, allowing model-independent access to transverse polarization observables A1, A2, g1, g2 and moment d2 of the proton. This document summarizes the operation and performance of the polarized target, polarized electron beam, and novel detector systems used during the course of the experiment, and describes analysis techniques utilized to access the physics observables of interest.
When inquiring about the gender of research participants, most studies use self-generated questions about gender or questions prepared by researchers that have been evaluated for comprehension by ...transgender and gender diverse (TGD) and cisgender individuals. However, many gaps still exist in this area, including identifying how TGD people would like to see their gender represented in questions about gender identity. To address this issue, we explored the perspectives of TGD people regarding the construction of questions about gender.
In this online study of 695 TGD people (
= 25.52), participants provided written suggestions for how to ask about gender and these responses were analyzed thematically. Data were collected between fall 2015 and summer 2017.
Three broad categories of responses emerged: (1) specific identities to include in response options; (2) specific questions to ask about gender; and (3) qualifiers/nuanced considerations.
Participants provided a variety of suggestions for how to ask about gender and future research is needed to explore the implementation of these suggestions. Recommendations are provided for options that researchers can explore for how to ask about gender. These findings highlight the ways that TGD people would like their gender to be asked about, which is necessary information to ensure that questions about gender reflect TGD people's identities accurately.
Measurements of elastic electron scattering data within the past decade have highlighted two-photon exchange contributions as a necessary ingredient in theoretical calculations to precisely evaluate ...hydrogen elastic scattering cross sections. This correction can modify the cross section at the few percent level. In contrast, dispersive effects can cause significantly larger changes from the Born approximation. The purpose of this experiment is to extract the carbon-12 elastic cross section around the first diffraction minimum, where the Born term contributions to the cross section are small to maximize the sensitivity to dispersive effects. The analysis uses the LEDEX data from the high resolution Jefferson Lab Hall A spectrometers to extract the cross sections near the first diffraction minimum of
12
C at beam energies of 362 MeV and 685 MeV. The results are in very good agreement with previous world data, although with less precision. The average deviation from a static nuclear charge distribution expected from linear and quadratic fits indicate a 30.6% contribution of dispersive effects to the cross section at 1 GeV. The magnitude of the dispersive effects near the first diffraction minimum of
12
C has been confirmed to be large with a strong energy dependence and could account for a large fraction of the magnitude for the observed quenching of the longitudinal nuclear response. These effects could also be important for nuclei radii extracted from parity-violating asymmetries measured near a diffraction minimum.
We examined associations between prejudice toward transgender people, aggression proneness, history of family violence, contact and closeness with transgender people, and education about issues that ...impact transgender individuals. We also examined the moderating effects of contact, education, and closeness on the relations between aggression and history of family violence with prejudice. There were 360 participants (M age = 31.34, SD = 12.47, range 18-75) who completed the survey online. Participants were recruited through social media, websites, and MTurk. Higher levels of aggression proneness were related to higher levels of prejudice. Higher levels of education about issues that impact transgender people and prior contact with a transgender person were associated with less prejudice. In a multiple regression analysis, the strongest predictor of prejudice was education about transgender people and topics. Moderation analyses revealed that prior contact may buffer the effects of aggression proneness on prejudiced beliefs.
Minority individuals might conceal their identity in social contexts in an effort to avoid stigma and victimization. Unfortunately, identity concealment is thought to impact psychological distress in ...transgender and gender nonconforming (TGNC) individuals. Thus, through 30 in-depth interviews, we sought to understand if and how identity concealment was experienced by TGNC individuals. Findings indicated that (a) TGNC identity concealment is a source of stress, (b) individuals might conceal their TGNC identity based on social context, (c) concealment of assigned sex and gender history can function to affirm one's true gender identity, and (d) concealment of gender history is a rejection of one's assigned sex. In addition, (a) passing/blending is an important interpersonal and intrapersonal process, (b) the importance of passing/blending can change over time, and (c) not passing/blending may result in worrying about personal safety. The authors discuss how concealment can both inhibit and promote psychological health for TGNC individuals, and they offer clinical applications for health providers.
Public Policy Relevance Statement
Concealing one's transgender identity appears to be associated with psychological distress; however, concealing one's assigned physical body and gender history might function to affirm one's true gender. Thus, policymakers in different social contexts-schools, employment, health care-should work to promote transgender inclusivity and create supportive settings where transgender individuals can affirm their true gender without fear of retribution.
Chitosan has been researched for implant and wound healing applications. However, there are inconsistencies in reports on the tissue and fibroblast responses to chitosan materials. These ...inconsistencies may be due to variations in chitosan material characteristics. The aim of this study was to correlate fibroblast responses with known chitosan material characteristics. To achieve this aim, chitosan was characterized for degree of deacetylation (DDA), molecular weight (MW), residual protein and ash contents, and then solution cast into films and characterized for hydrophilicity by water contact angle. The films were seeded with normal human dermal fibroblasts and the number of attached cells was evaluated for after 30 min. Cell proliferation was evaluated over 5 days. This study found no relationship between DDA, contact angle, cell attachment, and or proliferation. General trends were observed for increasing proliferation with increasing residual ash content and decreasing residual protein. These data indicate that chitosan characteristics other than DDA may be important to their biological performance.
Transgender and gender diverse (TGD) people face a myriad of daily stressors because of the hegemonic gender norms embedded within U.S. society. Due to these minority stressors, TGD people report ...elevated anxiety, depression, stress, and suicidality, among other health issues. One mechanism through which stigma may lead to these negative mental health outcomes is through increased rumination. In this intensive daily diary study with 181 TGD individuals (ages 16-40), we gathered qualitative data on their ruminative thoughts over the course of 56 days. There were a total of 2,431 responses across participants, with individuals providing a range of 1-53 responses (M = 15 responses). Using an experiential framework and an inductive approach to thematic analysis, we generated the following themes: (a) interpersonal relationships as a site of struggle, (b) fear and worry in response to contextual factors, (c) the weight of basic needs and safety, (d) gender as experienced through self and others, (e) intersections of health and rumination, and (f) the occasional reprieve. Using a deductive approach, we also placed these data within the context of Bronfenbrenner's Person-Process-Context-Time model to provide a conceptual model for future research in this area. These ruminative experiences revealed significant adversities and challenges weighing on participants' minds that spanned many areas of life. These findings also highlight the nuanced nature of rumination for TGD individuals and areas that may be overlooked in current assessments of this construct.
Public Policy Relevance Statement
Transgender and gender diverse (TGD) people commonly report experiencing rumination. The content of this rumination can range from everyday stressors, like finances, to novel experiences related to gender affirmation, interpersonal rejection, political oppression, and fears for safety.
Transgender and gender diverse (TGD) people encounter a range of minority stressors (e.g., harassment, victimization, misgendering) that impact many areas of life. Much of the empirical literature on ...gender minority stress has utilized frameworks that were developed with a focus on sexual orientation and were often limited to cisgender sexual minorities (lesbian, gay, bisexual, and other non-heterosexual individuals), leaving questions about how well existing models fit the experiences of TGD people.
To expand understandings of gender minority stress, we conducted a daily diary study where participants detailed the types of stressors they encountered on a daily basis for 56 days.
There were 181 TGD participants recruited into the study (
age = 25.6 years;
= 5.6), with 167 retained in the daily surveys from which these analyses were conducted.
The written responses revealed a variety of stressors, some of which are novel to the literature. Many participants reported instances of non-affirmation, such as misgendering, as well as vicarious stress when learning of oppressive experiences impacting other TGD people and seeing negative media portrayals of the lives of TGD individuals. Participants also reported bodily vigilance when being on alert for how others were perceiving their gender. Other stressors included rejection, political oppression, physical violence, uneasiness from others, and the enforcement of gender binarism.
These findings highlight gaps in the existing understandings of marginalization for TGD people that must be addressed to ensure that frameworks include and center the experiences of gender minorities.
In this study, we measured the ratios of electroproduction cross sections from a proton target for three exclusive meson-baryon final states: ΛK+, pπ0, and nπ+, with the CLAS detector at Jefferson ...Lab. Using a simple model of quark hadronization, we extract qq¯ creation probabilities for the first time in exclusive two-body production, in which only a single qq¯ pair is created. We observe a sizable suppression of strange quark-antiquark pairs compared to nonstrange pairs, similar to that seen in high-energy production.
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