389 research outputs found
Computational needs survey of NASA automation and robotics missions. Volume 1: Survey and results
NASA's operational use of advanced processor technology in space systems lags behind its commercial development by more than eight years. One of the factors contributing to this is that mission computing requirements are frequently unknown, unstated, misrepresented, or simply not available in a timely manner. NASA must provide clear common requirements to make better use of available technology, to cut development lead time on deployable architectures, and to increase the utilization of new technology. A preliminary set of advanced mission computational processing requirements of automation and robotics (A&R) systems are provided for use by NASA, industry, and academic communities. These results were obtained in an assessment of the computational needs of current projects throughout NASA. The high percent of responses indicated a general need for enhanced computational capabilities beyond the currently available 80386 and 68020 processor technology. Because of the need for faster processors and more memory, 90 percent of the polled automation projects have reduced or will reduce the scope of their implementation capabilities. The requirements are presented with respect to their targeted environment, identifying the applications required, system performance levels necessary to support them, and the degree to which they are met with typical programmatic constraints. Volume one includes the survey and results. Volume two contains the appendixes
Computational needs survey of NASA automation and robotics missions. Volume 2: Appendixes
NASA's operational use of advanced processor technology in space systems lags behind its commercial development by more than eight years. One of the factors contributing to this is the fact that mission computing requirements are frequency unknown, unstated, misrepresented, or simply not available in a timely manner. NASA must provide clear common requirements to make better use of available technology, to cut development lead time on deployable architectures, and to increase the utilization of new technology. Here, NASA, industry and academic communities are provided with a preliminary set of advanced mission computational processing requirements of automation and robotics (A and R) systems. The results were obtained in an assessment of the computational needs of current projects throughout NASA. The high percent of responses indicated a general need for enhanced computational capabilities beyond the currently available 80386 and 68020 processor technology. Because of the need for faster processors and more memory, 90 percent of the polled automation projects have reduced or will reduce the scope of their implemented capabilities. The requirements are presented with respect to their targeted environment, identifying the applications required, system performance levels necessary to support them, and the degree to which they are met with typical programmatic constraints. Here, appendixes are provided
Translating an AI application from Lisp to Ada: A case study
A set of benchmarks was developed to test the performance of a newly designed computer executing both Lisp and Ada. Among these was AutoClassII -- a large Artificial Intelligence (AI) application written in Common Lisp. The extraction of a representative subset of this complex application was aided by a Lisp Code Analyzer (LCA). The LCA enabled rapid analysis of the code, putting it in a concise and functionally readable form. An equivalent benchmark was created in Ada through manual translation of the Lisp version. A comparison of the execution results of both programs across a variety of compiler-machine combinations indicate that line-by-line translation coupled with analysis of the initial code can produce relatively efficient and reusable target code
Grandparents in Kinship Care: Help or Hindrance to Family Preservation
The phenomenon of grandparents and other relatives raising children is a tradition rooted in the African American culture. However, a substantial increase in the number of relatives raising children has drawn attention to the child welfare system. Many of the biological parents are incarcerated for drugs or suffering from other social ills. Kinship care is an important component of family preservation and prevents court intervention based on child protection concerns and avoids formal placement of children in the child welfare system (Wilkerson, 1999). The child welfare system, however, is not conducive to this phenomenon. Placing children with grandparents and relatives allows them to live with people they know and trust; reduces the initial trauma of living with unknown persons; supports the transmission of identity, culture, and ethnicity; facilitates connections with brothers and sisters, and strengthens a familyâs ability to provide the support they need
Genetic Recombination in Bacteriophage {varphi}X174
Genetic recombination in bacteriophage {varphi}X174 usually takes place early in the infection process and involves two parental replicative form (double-stranded) DNA molecules. The host recA protein is required; none of the nine known {varphi}X174 cistron products is essential. The products of a single recombination event are nonreciprocal and asymmetric. Typically, only one of the parental genotypes and one recombinant genotype are recovered from a single cell. An alternative, less efficient recombination mechanism which requires an active {varphi}X174 cistron A protein is observed in the absence of the host recA gene product
Hamiltonian evolutions of twisted gons in \RP^n
In this paper we describe a well-chosen discrete moving frame and their
associated invariants along projective polygons in \RP^n, and we use them to
write explicit general expressions for invariant evolutions of projective
-gons. We then use a reduction process inspired by a discrete
Drinfeld-Sokolov reduction to obtain a natural Hamiltonian structure on the
space of projective invariants, and we establish a close relationship between
the projective -gon evolutions and the Hamiltonian evolutions on the
invariants of the flow. We prove that {any} Hamiltonian evolution is induced on
invariants by an evolution of -gons - what we call a projective realization
- and we give the direct connection. Finally, in the planar case we provide
completely integrable evolutions (the Boussinesq lattice related to the lattice
-algebra), their projective realizations and their Hamiltonian pencil. We
generalize both structures to -dimensions and we prove that they are
Poisson. We define explicitly the -dimensional generalization of the planar
evolution (the discretization of the -algebra) and prove that it is
completely integrable, providing also its projective realization
Living with and without an intestinal stoma: Factors that promote psychological well-being and self-care: A cross sectional study.:Psychological well-being and stoma
Abstract Aims This study compared those living with and without an intestinal stoma in relation to physical and psychological health, stress and coping, quality of life and resilience. Also, identifying factors that could be used to promote better selfâcare in stoma patients in the future. Design A crossâsectional and comparative study design was employed. Methods Participants were recruited via email and social media (Facebook and Twitter) between August 2018 and March 2019, to complete an online survey. The data were analysed using analysis of variance to examine group difference and a series of hierarchical linear regression analyses determining predictors of psychological wellâbeing. Results Of 278 participants aged 18â68âyears who completed the survey, 129 (46%) had a stoma and reported significantly poorer physical health. Approximately oneâfifth experienced problems with stoma management. Psychological wellâbeing was mediated by the duration of living with a stoma (under 3âyears) and frequency of leaks (weekly and monthly)
Utility Scores and Treatment Preferences for Clinical Early-Stage Cervical Cancer
AbstractObjectivesTo determine utility scores for health states relevant to the treatment of early-stage, high-risk cervical cancer.MethodsSeven descriptive health states incorporating the physical and emotional aspects of medical treatment, recovery, and prognosis were developed. Forty-five female volunteers valuated each health state using the visual analogue score (VAS) and time trade off (TTO) methods. Treatment options were ranked by mean and median TTO scores. The 95% confidence intervals were calculated to determine the statistical significance of ranking preferences. The Wilcoxon rank-sum test was used to compare central tendencies related to age, race, parity, and subject history of abnormal cervical cytology.ResultsVAS and TTO scores were highly correlated. Volunteers ranked minimally invasive radical hysterectomy with low-risk features as most preferred (mean TTO = 0.96; median TTO = 1.00) and aborted radical hysterectomy followed by chemoradiation as least preferred (mean TTO = 0.69; median TTO = 0.83). Health states that included radical surgery were ranked higher than those that included chemoradiation, either in the adjuvant or primary setting. When survival was comparable, volunteers rated radical hysterectomy with high-risk pathology followed by adjuvant chemoradiation (mean TTO = 0.78; median TTO = 0.92; 95% CI: 0.69â0.87) similarly to chemoradiation alone (mean TTO = 0.76; median TTO 0.90; 95% CI: 0.66â0.86; p = NS). Utility scores for the majority of health states were not significantly associated with age, race, parity, or subject history of abnormal cervical cytology.ConclusionSubjects consistently preferred surgical excision to treat early-stage, high-risk cervical cancer and chose a minimally invasive approach. Such utility scores can be used to incorporate quality-of-life effects into comparative-effectiveness models for cervical cancer
The Student Movement Volume 107 Issue 16: Soul Lounge, Self-Care, and Stripple Breakfast Burritos: There\u27s Something for Everyone
HUMANS
AU\u27s Favorite Classes, Solana Campbell
Becoming Multilingual, Gloria Oh
Greatest Gazebo Orders, Solana Campbell
Interview with VP Nixon, Caryn Cruz
ARTS & ENTERTAINMENT
Currently: Babel, Terika Williams
That 90\u27s Love: BSCF Soul Lounge, Skyler Campbell
The Therapist, Marcel Mattox
NEWS
Experience Andrews University\u27s Community Adult Education, Gloria Oh
Joyful Resilience: An Art Experience at AU, Solana Campbell
Students Share Their African Heritage at Short Course, Andrew Francis
IDEAS
The Future of Self-Care, Katie Davis
The Straw that Breaks the Camel\u27s Back? Beyoncé and the 2023 Grammys, Alexander J. Hess
Death Toll Passes 41,000: Turkey and Syria Earthquakes, Abby Shim
PULSE
A Conversation with an NBA Physician, Reagan McCain
Nick Bishop and Honduras, Interviewed by Abraham Bravo
LAST WORD
Intelligence, Artificial and Otherwise: A Reflection on Extended Cognition, ChatGPT, and Neurodivergence, Lily Burkehttps://digitalcommons.andrews.edu/sm-107/1015/thumbnail.jp
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