<effects of low energy proton irradiation on solar cells< monthly progress report, jan. 1965

Low energy proton irradiated solar cells using sun simulato

Charged Particle Radiation Damage in Semiconductors, I- Experimental Proton Irradiation of Solar Cells

Proton irradiation of solar cell

Hazard Contribution Modes of Machine Learning Components

Amongst the essential steps to be taken towards developing and deploying safe systems with embedded learning-enabled components (LECs) i.e., software components that use ma- chine learning (ML)are to analyze and understand the con- tribution of the constituent LECs to safety, and to assure that those contributions have been appropriately managed. This paper addresses both steps by, first, introducing the notion of hazard contribution modes (HCMs) a categorization of the ways in which the ML elements of LECs can contribute to hazardous system states; and, second, describing how argumentation patterns can capture the reasoning that can be used to assure HCM mitigation. Our framework is generic in the sense that the categories of HCMs developed i) can admit different learning schemes, i.e., supervised, unsupervised, and reinforcement learning, and ii) are not dependent on the type of system in which the LECs are embedded, i.e., both cyber and cyber-physical systems. One of the goals of this work is to serve a starting point for systematizing L analysis towards eventually automating it in a tool

A contribution to laser range imaging technology

The goal of the project was to develop a methodology for fusion of a Laser Range Imaging Device (LRID) and camera data. Our initial work in the project led to the conclusion that none of the LRID's that were available were sufficiently adequate for this purpose. Thus we spent the time and effort on the development of the new LRID with several novel features which elicit the desired fusion objectives. In what follows, we describe the device developed and built under contract. The Laser Range Imaging Device (LRID) is an instrument which scans a scene using a laser and returns range and reflection intensity data. Such a system would be extremely useful in scene analysis in industry and space applications. The LRID will be eventually implemented on board a mobile robot. The current system has several advantages over some commercially available systems. One improvement is the use of X-Y galvonometer scanning mirrors instead of polygonal mirrors present in some systems. The advantage of the X-Y scanning mirrors is that the mirror system can be programmed to provide adjustable scanning regions. For each mirror there are two controls accessible by the computer. The first is the mirror position and the second is a zoom factor which modifies the amplitude of the position of the parameter. Another advantage of the LRID is the use of a visible low power laser. Some of the commercial systems use a higher intensity invisible laser which causes safety concerns. By using a low power visible laser, not only can one see the beam and avoid direct eye contact, but also the lower intensity reduces the risk of damage to the eye, and no protective eyeware is required

Letter from J. V. Denney

Letter of recommendation for Royal A. Abbot

Fatigue Response of Cracked Aluminum Panel with Partially Bonded Composite Patch

More and more aircraft, both commercial and military, are being called upon to fly well beyond their economic and structural service lives. Budget cuts and dwindling new aircraft development has forced the United States Air Force (USAF) to look toward more reliable structural repairs. One of these repair techniques, which was the subject of this study, is the repair of metallic aircraft structures using high strength composite materials. This study investigated the fatigue response of a precracked, 508x1 52x1 mm, 2024-T3 aluminum panel repaired with a partially bonded, unidirectional, three-ply boron/epoxy composite reinforcement with ply lengths of 68, 56 and 50 mm and a width of 50 mm. Intentional disbonds were created in the bondline of the repair using teflon inserts to simulate defects seen in real applications due to service conditions or during manufacturing. The repaired panels were subjected to constant amplitude fatigue testing at a peak load of 120 MPa to study the damage and fatigue tolerance of partially bonded composite reinforcements to cracked aluminum panels. The effects of various disbond locations and sizes were investigated and compared to each other as well as to panels repaired with a completely bonded reinforcement and to cracked panels without any reinforcement. Five disbond locations were investigated. Also, the effect of disbond size varying from 5 to 20% of the total bond area for a few cases of disbond location was investigated. It was found that disbonds around the crack resulted in greater crack growth rates and reduced specimen life. The amount of patch efficiency reduction was a function of how much of the crack was covered by the disbond during growth within the patch as well as the size of the disbond perpendicular to the crack

From the Hammer to the Fist: The Pleasures and Dangers of March, Progress and Protest in Creating Social Justice from the First Wave to the Present

The visual history of the British suffrage campaign for social justice began with elegant, organized pageants of pictorial unity; but the beautiful spectacles were not enough to convince the British government of women’s desire for equality under the law. Militant activists of the Women’s Social and Political Union (hereafter WSPU) eventually employed aggressive tactics, letting go of the restrained politics of respectability. This study examines the link between the visual protests of first-wave activists and those of second- and third-wave advocates, in order to establish a dialogue about the presumed transgressions of women’s bodily presence and feminists’ use of body language. Starting with the toffee hammers that the WSPU suffragettes used in 1912 to smash windows, traditional cultural assumptions about women’s bodily possibilities, like the windows themselves, were shattered. I seek to answer a question that has never been posed in feminist art historical debate: What is the bond between the hammer and the raised fist within feminist protest in its quest for social justice

Brief 11: Gender and the Sustainable Development Goals: Moving Beyond Women as a Quick Fix for Development

In September 2015, the international community will sign on to a set of Sustainable Develop- ment Goals (SDGs), which will replace the Millennium Development Goals (MDGs). The SDGs are applicable to all states, developing and developed alike, and are the result of a political process led by an Open Working Group comprising 70 member states in consultation with other stakeholders. This brief concerns MDG 3, Promote Gender Equality and Empower Women, and the corresponding proposed SDG 5, Achieve Gender Equality and Empower All Women and Girls. All information about SDG 5 comes from the Open Working Group Proposal for Sustainable Development Goals. In the first part, the author presents an analytical framework for evaluating whether the goals for female empowerment and gender equality attain the desired result. Next, the framework is applied to the targets for the proposed SDG 5. Finally, the author argues that the international community should embrace goals, targets, and indicators that advance gender equality for the sake of equality itself, rather than as a quick fix for economic underdevelopment

Cross-comparison of MRCGP & MRCP(UK) in a database linkage study of 2,284 candidates taking both examinations: assessment of validity and differential performance by ethnicity.

MRCGP and MRCP(UK) are the main entry qualifications for UK doctors entering general [family] practice or hospital [internal] medicine. The performance of MRCP(UK) candidates who subsequently take MRCGP allows validation of each assessment. In the UK, underperformance of ethnic minority doctors taking MRCGP has had a high political profile, with a Judicial Review in the High Court in April 2014 for alleged racial discrimination. Although the legal challenge was dismissed, substantial performance differences between white and BME (Black and Minority Ethnic) doctors undoubtedly exist. Understanding ethnic differences can be helped by comparing the performance of doctors who take both MRCGP and MRCP(UK)