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We present here the design, architecture, and first data release for the Solar System Notification Alert Processing System (SNAPS). SNAPS is a Solar System broker that ingests alert data from all-sky surveys. At present, we ingest data from the Zwicky Transient Facility (ZTF) public survey, and we will ingest data from the forthcoming Legacy Survey of Space and Time (LSST) when it comes online. SNAPS is an official LSST downstream broker. In this paper we present the SNAPS design goals and requirements. We describe the details of our automatic pipeline processing in which physical properties of asteroids are derived. We present SNAPShot1, our first data release, which contains 5,458,459 observations of 31,693 asteroids observed by ZTF from July, 2018, through May, 2020. By comparing a number of derived properties for this ensemble to previously published results for overlapping objects we show that our automatic processing is highly reliable. We present a short list of science results, among many that will be enabled by our SNAPS catalog: (1) we demonstrate that there are no known asteroids with very short periods and high amplitudes, which clearly indicates that in general asteroids in the size range 0.3--20 km are strengthless; (2) we find no difference in the period distributions of Jupiter Trojan asteroids, implying that the L4 and L5 cloud have different shape distributions; and (3) we highlight several individual asteroids of interest. Finally, we describe future work for SNAPS and our ability to operate at LSST scale., Comment: AJ, in press

Computing the periods of variable objects is well-known to be computationally expensive. Modern astronomical catalogs contain a significant number of observed objects. Therefore, even if the period ranges for particular classes of objects are well-constrained due to expected physical properties, periods must be derived for a tremendous number of objects. In this paper, we propose a GPU-accelerated Lomb-Scargle period finding algorithm that computes periods for single objects or for batches of objects as is necessary in many data processing pipelines. We demonstrate the performance of several optimizations, including comparing the use of shared and global memory GPU kernels and using multiple CUDA streams to copy periodogram data from the GPU to the host. Also, we quantify the difference between 32-bit and 64-bit floating point precision on two classes of GPUs, and show that the performance degradation of using 64-bit over 32-bit is greater on the CPU than a GPU designed for scientific computing. We find that the GPU algorithm achieves superior performance over the baseline parallel CPU implementation, achieving a speedup of up to 174.53$\times$. The Vera C. Rubin Observatory will carry out the Legacy Survey of Space and Time (LSST). We perform an analysis that shows we can derive the rotation periods of batches of Solar System objects at LSST scale in near real-time, which will be employed in a future LSST event broker. All source code has been made publicly available., Comment: Accepted for publication in Astronomy and Computing. 15 pages, 10 figures, 6 tables. Source code is publicly available at this http URL https://github.com/mgowanlock/gpu_lomb_scargle

Increased awareness, interest and use of assistive technology (AT) presents substantial opportunities for many citizens to become, or continue being, meaningful participants in society. However, there is a significant shortfall between the need for and provision of AT, and this is patterned by a range of social, demographic and structural factors. To seize the opportunity that assistive technology offers, regional, national and sub-national assistive technology policies are urgently required. This paper was developed for and through discussion at the Global Research, Innovation and Education on Assistive Technology (GREAT) Summit; organized under the auspices of the World Health Organization’s Global Collaboration on Assistive Technology (GATE) program. It outlines some of the key principles that AT polices should address and recognizes that AT policy should be tailored to the realities of the contexts and resources available. AT policy should be developed as a part of the evolution of related policy across a number of different sectors and should have clear and direct links to AT as mediators and moderators for achieving the Sustainable Development Goals. The consultation process, development and implementation of policy should be fully inclusive of AT users, and their representative organizations, be across the lifespan, and imbued with a strong systems-thinking ethos. Six barriers are identified which funnel and diminish access to AT and are addressed systematically within this paper. We illustrate an example of good practice through a case study of AT services in Norway, and we note the challenges experienced in less well-resourced settings. A number of economic factors relating to AT and economic arguments for promoting AT use are also discussed. To address policy-development the importance of active citizenship and advocacy, the need to find mechanisms to scale up good community practices to a higher level, and the importance of political engagement for the po

Poetry in Pre-Raphaelite Paintings is an international collection of essays written by seasoned and emerging scholars. This book explores, discusses, and provides new perspectives on Pre-Raphaelite paintings inspired by poems and poems inspired by Pre-Raphaelite paintings, ranging from the inauguration of the movement in 1848 until the end of the nineteenth century. Through a textual and visual journey, this work reflects an innovative approach to Pre-Raphaelite art and Victorian poetry. The rationale in collating this collection of essays is to suggest new approaches for studies in Victorian visual and verbal art. This collection urges new ways of looking at Pre-Raphaelite art and poetry and its dynamic impact on the changing face of Victorian artistic practices through the second half of the nineteenth century, re-evaluating the extent to which this relatively short-lived movement influenced diverse writers and artists and their work. This book will be of interest to students and scholars of Pre-Raphaelites, Victorian poetry and painting, and the intersection between them.

Background and Methods: This paper reviews the current capacity of personnel in enabling access to assistive technology (AT) as well as the systems and processes within which they work, and was reviewed, discussed, and refined during and following the Global Research, Innovation, and Education in Assistive Technology (GREAT) Summit. Findings: Key concepts addressed include a person-centred team approach; sustainability indicators to monitor, measure, and respond to needs for service design and delivery; education, research, and training for competent practice, using the six rehab-workforce challenges framework; and credentialing frameworks. We propose development of a competence framework and associated education and training programs, and development and implementation of a certification framework for AT personnel. Conclusions: There is a resolve to address the challenges faced by People globally to access assistive technology. Context specific needs assessment is required to understand the AT Personnel landscape, to shape and strengthen credentialing frameworks through competencies and certification, acknowledging both general and specific skill mix requirements.

The effects of network-centric operations would be degraded if not for inherent human or machine sensemaking capabilities. Without knowing the situation or understanding the actors and their disposition and intent, deciding and executing the most appropriate response is a futile activity. Collecting data and creating track information to resolve the intent and disposition of disparate actors is only possible by having an integrated intelligence, surveillance, and reconnaissance (ISR) network of humans and supporting systems. While ISR networks in the military context are becoming increasingly elaborate and more tightly 'networked' to perform their roles for a commander, so, too, must the underlying logic be developed to impart commander's intent on the ISR network such that it functions with the agility needed to keep pace with the dynamic environment. Dynamic networks rely on a foundation of interoperability standards, among which should be a prioritization taxonomy that baselines priorities of actors in the situation and dynamically allocates the ISR resources accordingly to achieve the desired effects. This paper examines the required characteristics of a prioritization taxonomy and proposes a sample framework for implementation., Presented at the International Command and Control Research and Technology Symposium (13th) (ICCRTS 2008) held in Seattle, WA on 17-19 Jun 2008. Document includes briefing charts (15 slides, title: Prioritization Taxonomy for Network-centric Operations). The original document contains color images.

The network-centric concept of operations (or network-centric warfare (NCW)) is predicated on the increased availability of information at every node in the network. This information is the result of both the efficient fusion of disparate sensor inputs into a coherent picture and effective sharing of situation awareness among operators supporting the combatant commander. A difficulty arises in that for both the sensors and the operators, increasing information availability is insufficient to assure either the coherency of the picture or the common understanding of it. Experience and research have shown that interface concepts focused on Commander s Intent can provide an integrating function for both operators shared understanding of the situation and the netted sensor assets. By grounding both the logic employed in the networked sensor management and the method of visualizing the shared picture on Commander s Intent, synergies anticipated from network centric operations may be reasonably achieved. This paper describes both a notional design framework for a common user interface for command and control operations as well as prioritization logic for network-centric sensor management., Presented at the International Command and Control Research and Technology Symposium (12th) held in Newport, RI on 19-21 June 2007. The original document contains color images.

Donnelly provides a historical context for an exhibition which traces the evolution of postwar Canadian graphic design. He relates changes in typography, layout and photography to critical debates concerning modernism, avant-garde artistic practice, economics, technology and culture. Biographical notes. 24 bibl. ref.