Study-simulation of space station dynamics

Matrix algebra translator and executor /MATE/ takes equations describing structural control system environmental interaction problem for flexible spacecraft components and loads them into self programming computer

Rollup subsolar array Quarterly technical report, 1 Dec. 1969 - 28 Feb. 1970

Prototype test model of 30-watt per pound rollup solar arra

Carcinogenicity of cobalt, antimony compounds, and weapons-grade tungsten alloy

The complete evaluation of the carcinogenicity of cobalt, antimony compounds, and weapons-grade tungsten alloy will be published in Volume 131 of the IARC Monographs.[Excerpt] In March, 2022, a Working Group of 31 scientists from 13 countries met remotely at the invitation of the International Agency for Research on Cancer (IARC) to finalise their evaluation of the carcinogenicity of nine agents: cobalt metal (without tungsten carbide or other metal alloys), soluble cobalt(II) salts, cobalt(II) oxide, cobalt(II,III) oxide, cobalt(II) sulfide, other cobalt(II) compounds, trivalent antimony, pentavalent antimony, and weapons-grade tungsten (with nickel and cobalt) alloy. For cobalt metal and the cobalt compounds, particles of all sizes were included in the evaluation. These assessments will be published in Volume 131 of the IARC Monographs.1 Cobalt metal and soluble cobalt(II) salts were classified as “probably carcinogenic to humans” (Group 2A) based on “sufficient” evidence for cancer in experimental animals and “strong” mechanistic evidence in human primary cells. Cobalt(II) oxide and weapons-grade tungsten alloy were classified as “possibly carcinogenic to humans” (Group 2B) based on “sufficient” evidence in experimental animals. Trivalent antimony was classified as “probably carcinogenic to humans” (Group 2A), based on “limited” evidence for cancer in humans, “sufficient” evidence for cancer in experimental animals, and “strong” mechanistic evidence in human primary cells and in experimental systems. Cobalt(II,III) oxide, cobalt(II) sulfide, other cobalt(II) compounds, and pentavalent antimony were each evaluated as “not classifiable as to its carcinogenicity to humans” (Group 3).[...

The Interstate Compact on Educational Opportunity for Military Dependent Children a policy alignment analysis in three Virginia school divisions.

The purpose of this two phase policy alignment analysis is to evaluate the degree to which the Interstate Compact on Educational Opportunity for Military Dependent Children has been aligned in the Virginia Compact statute and the degree to which three school divisions heavily populated by military dependent students have aligned local school policy to the statute. The Interstate Compact was intended to mitigate the transitional challenges military dependent students experienced as they navigated a patchwork of local policies through the establishment of aligned state statute in all states to add a layer of uniform policy in each school system. School personnel rely on local school policy to provide uniform guidance for student records and enrollment, placement and attendance, eligibility, and graduation. This qualitative approach used document analysis to first compare the content of the Interstate Compact to the Virginia statute, then second, analyzed local school division policy documents using priori codes derived from the Virginia statute to determine the degree of alignment to the Virginia statute. The findings reveal a loose coupling of state statute to local policy impacting military dependent students. The Compact was developed collaboratively at the national level, however gaps in policy alignment at the local level may continue to hinder school personnel from providing uniform guidance according the data from this policy analysis

COVID-19 and Essential Workers: A Narrative Review of Health Outcomes and Moral Injury

The COVID-19 pandemic has introduced a number of added obstacles to safe employment for already-challenged essential workers. Essential workers not employed in the health sector generally include racially diverse, low-wage workers whose jobs require close interaction with the public and/or close proximity to their coworkers, placing them at increased risk of infection. A narrative review facilitated the analyses of health outcome data in these workers and contributing factors to illness related to limited workplace protections and a lack of organizational support. Findings suggest that this already marginalized population may also be at increased risk of “moral injury” due to specific work-related factors, such as limited personal protective equipment (PPE) and the failure of the employer, as the safety and health “duty holder,” to protect workers. Evidence suggests that ethical and, in some cases, legally required safety protections benefit not only the individual worker, but an employer’s enterprise and the larger community which can retain access to resilient, essential services