Volumetric error compensation for 5-axis machine tools

This work presents a geometric error compensation method for large 5-axis machine tools. The compensation method presented here uses tool tip measurements recorded throughout the axis space to construct a position-dependent geometric error model that can easily be used for error compensation. The measurements are taken using a laser tracker, permitting rapid error data gathering at most locations in the axis space. First two model types are compared for generating table-based error compensation and experimental results are presented. Table-based compensation is then extended to machine tool controller types with restrictions on the number or combination of compensation tables using an artificial intelligence method. The overall methodology is then extended to the integration of additional instruments. A particular strength of the proposed methodology is the simultaneous generation of a complete set of compensation tables that accurately captures complicated kinematic errors independent of whether they arise from expected and unexpected sources --Abstract, page iv

Destination integration: linking physiology, histology, and embryology content in foundational sciences

Anatomy and physiology are tightly linked disciplines that complement each other, however, in medical education delivery of this content is often siloed and divided. To address this, we created combined anatomy and physiology content for the female reproductive system, and team-taught designated histology and embryology topics integrated with the physiology content. Collectively, this created a more holistic incorporation of topics for student learning. Here we describe the format and approach for this teaching innovation

Leaning in to Address Sleep Disturbances and Sleep Disorders in Department of Defense and Defense Health Agency

Letter to the Editor, Military Medicine, 187, 5/6:155, 202217 USC 105 interim-entered record; under review.The article of record as published may be found at http://dx.doi.org/10.1177/0018720820906050In their article entitled, “Engaging Stakeholders to Optimize Sleep Disorders Management in the U.S. Military: A Qualitative Analysis,” Abdelwadoud and colleagues conducted focus groups of service members, primary care managers (PCMs), and administrative stakeholders about their perceptions, experiences, roles in sleep management, stated education needs, and management of sleep disorders.1 The qualitative methods are rigorous, and the findings reinforce and nuance prior results, especially regarding key requirements from PCMs. We feel compelled, however, to further nuance the authors’ conclusion that “current military sleep management practices are neither satisfactory nor maximally effective” and offer specific examples of actions taken by the Department of Defense (DoD) and Defense Health Agency (DHA) in recognition of the significance of optimal sleep in combat readiness and overall health of service members. We offer here a succinct list of concrete efforts to support and implement substantial clinical, operational, research, or educational efforts by the DoD or DHA to improve sleep in service members and associated clinical challenges in this unique population.Identified in text as U.S. Government work

Prevalence and clinical characteristics of non-malignant CT detected incidental findings in the SUMMIT lung cancer screening cohort

BACKGROUND: Pulmonary and extrapulmonary incidental findings are frequently identified on CT scans performed for lung cancer screening. Uncertainty regarding their clinical significance and how and when such findings should be reported back to clinicians and participants persists. We examined the prevalence of non-malignant incidental findings within a lung cancer screening cohort and investigated the morbidity and relevant risk factors associated with incidental findings. We quantified the primary and secondary care referrals generated by our protocol. METHODS: The SUMMIT study (NCT03934866) is a prospective observational cohort study to examine the performance of delivering a low-dose CT (LDCT) screening service to a high-risk population. Spirometry, blood pressure, height/weight and respiratory history were assessed as part of a Lung Health Check. Individuals at high risk of lung cancer were offered an LDCT and returned for two further annual visits. This analysis is a prospective evaluation of the standardised reporting and management protocol for incidental findings developed for the study on the baseline LDCT. RESULTS: In 11 115 participants included in this analysis, the most common incidental findings were coronary artery calcification (64.2%) and emphysema (33.4%). From our protocolised management approach, the number of participants requiring review for clinically relevant findings in primary care was 1 in 20, and the number potentially requiring review in secondary care was 1 in 25. CONCLUSIONS: Incidental findings are common in lung cancer screening and can be associated with reported symptoms and comorbidities. A standardised reporting protocol allows systematic assessment and standardises onward management

Growing small solid nodules in lung cancer screening: safety and efficacy of a 200 mm3 minimum size threshold for multidisciplinary team referral

The optimal management of small but growing nodules remains unclear. The SUMMIT study nodule management algorithm uses a specific threshold volume of 200 mm3 before referral of growing solid nodules to the multidisciplinary team for further investigation is advised, with growing nodules below this threshold kept under observation within the screening programme. Malignancy risk of growing solid nodules of size >200 mm3 at initial 3-month interval scan was 58.3% at a per-nodule level, compared with 13.3% in growing nodules of size ≤200 mm3 (relative risk 4.4, 95% CI 2.17 to 8.83). The positive predictive value of a combination of nodule growth (defined as percentage volume change of ≥25%), and size >200 mm3 was 65.9% (29/44) at a cancer-per-nodule basis, or 60.5% (23/38) on a cancer-per-participant basis. False negative rate of the protocol was 1.9% (95% CI 0.33% to 9.94%). These findings support the use of a 200 mm3 minimum volume threshold for referral as effective at reducing unnecessary multidisciplinary team referrals for small growing nodules, while maintaining early-stage lung cancer diagnosis

New ways for our families : Designing an Aboriginal and Torres Strait Islander cultural practice framework and system responses to address the impacts of domestic and family violence on children and young people

Little has been done to understand what works to support First Nations children and young people to heal from their experiences of violence. This research project explores how services and systems can better respond to the needs of Aboriginal and Torres Strait Islander children and young people exposed to DFV who come to the attention of child protection systems. Led by the Queensland Aboriginal and Torres Strait Islander Child Protection Peak (QATSICPP), a team of First Nations researchers, supported by non-Indigenous researchers, utilised a participatory action research methodology – ensuring cultural safety and adherence to cultural values and protocols, including co-creation of knowledge. This report, the first in a series for this project, presents the results of a literature review and the findings from the initial cycles of action research conducted with Aboriginal and Torres Strait Islander chief investigators, community researchers and practitioners working in eight community-controlled child and family services across Queensland. The literature review and the outcomes of the initial action research cycle confirmed that the experience of DFV in childhood is resulting in negative lifelong outcomes for First Nations children, including increased interactions with the child protection and justice systems. The researchers also found that these responses (child protection and justice) are not adequate or culturally safe. To support healing for these children and young people, the report recommends: • holistic healing opportunities • culturally strong and community-led whole-of-family support • therapeutic healing circles and camps • connection to and knowledge about traditional cultural values, systems and traditions • a framework of perpetrator accountability • system changes include procuring place-based and healing responses for Aboriginal and Torres Strait Islander community-controlled services that support self-determination, and working collectively with the whole family. Additionally, cultural capability across the service system needs to be enhanced, and structural racism needs to be eliminated in order to reduce the load on existing Aboriginal and Torres Strait Islander services. Future publications from this research project, due in 2022, will consist of a research report on the remaining action research cycles and a framework for working with Aboriginal and Torres Strait Islander children and young people who have experienced DFV and have also come in contact with the child protection system

Facing Japan While Living in the United States: The Study Abroad Experiences and Expectations of Japanese Women

170 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004.My research contributes an anthropological perspective to the nascent social science literature on students studying abroad by illustrating how the home culture permeates and directs the students' study abroad experience. I aim to dismantle the often monolithic portrayal of the "international student" and the "Japanese student" in the cross disciplinary literature in international education. Moreover, an understanding of how Japanese women "face Japan" during their educational experiences abroad has applied significance for practitioners in the field of international education, by aiding administrators and educators in providing more appropriate programs for these students.U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD

Nightmares in United States Military Personnel With Sleep Disturbances

The article of record as published may be found at http://doi.org/10.5664/jcsm.6990The spectrum of sleep disorders in military personnel is varied and complicated by the presence of comorbidities and psychological disorders. Currently, little is known regarding nightmares, especially trauma-related nightmares. Study Impact: This is the first study to report on objective and subjective sleep attributes in a cohort of military personnel, determining the prevalence of nightmares and polysomnographic characteristics associated with nightmares. Clinically, this highlights the need for military and civilian health care providers to evaluate for nightmares in individuals with sleep disturbances after traumatic experiences. From a research perspective, these findings provide the basis to further address nightmares, which are associated with the pressing issues of sleep and behavioral medicine disorders and suicidality in military and veteran populations