JWST Optical Telescope Element Center of Curvature Test

The James Webb Space Telescope (JWST) Optical Telescope Element (OTE) and Integrated Science Instrument Module (ISIM) completed element level integration and test programs and were integrated to the next level of assembly called OTE/ISIM (OTIS) at Goddard Space Flight Center (GSFC) in Greenbelt, Maryland in 2016. Before shipping the OTIS to Johnson Space Center (JSC) for optical test at cryogenic temperature a series of vibration and acoustic tests were performed. To help ensure that the OTIS was ready to be shipped to JSC an optical center of curvature (CoC) test was performed to measure changes in the mirror's optical performance to verify that the telescope's primary mirror was not adversely impacted by the environmental testing and help us in understanding potential anomalies identified during the JSC tests. The primary is a 6.5 meter diameter mirror consisting of 18 individual hexagonal segments. Each segment is an off-axis asphere. There are a total of three prescriptions repeated six times each. As part of the CoC test each segment was individually measured using a high-speed interferometer (HSI) designed and built specifically for this test. This interferometer is capable of characterizing both static and dynamic characteristics of the mirrors. The latter capability was used, with the aid of a vibration stinger applying a low-level input force, to measure the dynamic characteristic changes of the PM backplane structure. This paper describes the CoC test setup and both static and dynamic test results

A new tool to assess Clinical Diversity In Meta‐analyses (CDIM) of interventions

OBJECTIVE: To develop and validate Clinical Diversity In Meta-analyses (CDIM), a new tool for assessing clinical diversity between trials in meta-analyses of interventions.STUDY DESIGN AND SETTING: The development of CDIM was based on consensus work informed by empirical literature and expertise. We drafted the CDIM tool, refined it, and validated CDIM for interrater scale reliability and agreement in three groups.RESULTS: CDIM measures clinical diversity on a scale that includes four domains with 11 items overall: setting (time of conduct/country development status/units type); population (age, sex, patient inclusion criteria/baseline disease severity, comorbidities); interventions (intervention intensity/strength/duration of intervention, timing, control intervention, cointerventions); and outcome (definition of outcome, timing of outcome assessment). The CDIM is completed in two steps: first two authors independently assess clinical diversity in the four domains. Second, after agreeing upon scores of individual items a consensus score is achieved. Interrater scale reliability and agreement ranged from moderate to almost perfect depending on the type of raters.CONCLUSION: CDIM is the first tool developed for assessing clinical diversity in meta-analyses of interventions. We found CDIM to be a reliable tool for assessing clinical diversity among trials in meta-analysis.</p

New infant cranium from the African Miocene sheds light on ape evolution

The evolutionary history of extant hominoids (humans and apes) remains poorly understood. The African fossil record during the crucial time period, the Miocene epoch, largely comprises isolated jaws and teeth, and little is known about ape cranial evolution. Here we report on the, to our knowledge, most complete fossil ape cranium yet described, recovered from the 13 million-year-old Middle Miocene site of Napudet, Kenya. The infant specimen, KNM-NP 59050, is assigned to a new species of Nyanzapithecus on the basis of its unerupted permanent teeth, visualized by synchrotron imaging. Its ear canal has a fully ossified tubular ectotympanic, a derived feature linking the species with crown catarrhines. Although it resembles some hylobatids in aspects of its morphology and dental development, it possesses no definitive hylobatid synapomorphies. The combined evidence suggests that nyanzapithecines were stem hominoids close to the origin of extant apes, and that hylobatid-like facial features evolved multiple times during catarrhine evolution

“HERE TO HAVE FUN AND FIGHT ABLEISM”: #AUTISKTOK USER BIOS AS NEUROQUEER MICRO-ACTIVIST PLATFORM AFFORDANCES

User biography sections on digital social platforms (hereafter described as “user bios” or “bios”) are spaces for account holders to take narrative ownership in communicating their identities to other users and interlocutors. Online platforms, such as social media, are increasingly used as community hubs for disabled groups, and especially for autistic people (Author; Author; Sins Invalid, 2019). We focus on #Autisktok, one of many enclaves for autistic community building and cultural production on TikTok. Through a critical/cultural qualitative thematic analysis of #Autisktok user bios, we assess how the user bio mediates self-advocacy, agency, and autistic-centered knowledges on #Autisktok. To investigate how autistic TikTokers use their profile’s bio section as a space for “restorying” mainstream discourses about autism and agency, we draw upon M. Remi Yergeau’s (2018) work on autism and neuroqueer rhetorics and Arseli Dokumacı’s (2023) theory of micro-activist affordances, extending these frameworks toward the digital. We pose the following research questions: How do autistic youth use the bio section on TikTok to (re)story autism diagnosis? What is the user bio’s role in creating a supportive enclave for other autistic creators, users, and activists on the TikTok platform? Three themes emerged from our analysis: the explicit use of autism in the user bio, autism and intersecting identities, and the bio as a space for asserting agentic autistic selfhood

No woman’s land? Revisiting border zone denizens

This article presents empirical data from survey research into lesbian and queer masculinities in the United Kingdom, conducted in 2017, which garnered over two hundred responses. Dominant themes emerged which addressed the differences between the sexed body and gender identity; the contradictions of identifying with masculinities while critiquing hegemonic masculinity; a sense of anxiety or loss around a perceived decline of lesbian community and identities within it, particularly the identity of butch lesbian; and, finally, the variety of trans identities and how they are defined and distinct. The focus in this article is on the latter theme, the variety of trans identities, and particularly the shared experiences of individuals across different identifications. Namely, I consider how butch, non-binary, and queer individuals reported possible areas of resonance and recognition with transgender or transmasculine experiences or the experiences of trans men. I argue that rumors of “border wars” have been exaggerated, as these territories are often overlapping. In addition, some individuals inhabit multiple sites of identity or shift between and across shared sites. Degrees of sex and gender dysphoria were not only reported by trans-identified individuals, and while not all such individuals adopted a trans identity, this was not necessarily because these border zone denizens felt a strong connection to femaleness or womanhood; often far from it