81,985 research outputs found
Building Healthy Places with People and for People: Community Engagement for Healthy and Sustainable Communities
Over a 25 year period, residents of the El Sereno community in Los Angeles have opposed efforts of investors seeking to build luxury homes on the area known as Elephant Hill. After years of community organizing—canvassing door to door, developing a broad-based coalition and mobilizing supporters to attend public hearings—residents declared victory after the City Council agreed to settle a lawsuit with the developers by buying the 20-acre site for $6 million to create a future park. Residents are glad that a chunk of one of Los Angeles' last undeveloped hillsides will remain open space in this park poor, working-class Latino community. Opposition efforts reignited in 2004 not only to preserve open space, but also to encourage public safety and counter threats to gentrification. Elva Yañez, the El Sereno resident who led the most recent efforts to preserve Elephant Hill, hailed the settlement as a victory for environmental justice: "After a long and hard fought struggle, the residents of this community have been afforded the environmental protections that are rightfully theirs. We are pleased that this poorly planned project is not moving forward and environmental justice has prevailed." [Contreras & Sanchez, 2009; Yañez, personal communication, 2010
Nonaqueous synthesis of metal oxide nanoparticles and their assembly into mesoporous materials
Roscoe Reid Graham (1890 to 1948): a Canadian pioneer in general surgery.
Roscoe Reid Graham, a Canadian surgeon trained at the University of Toronto, was a true pioneer in the field of general surgery. Although he may be best known for his omental patch repair of perforated duodenal ulcers-often referred to as the Graham patch -he had a number of other significant accomplishments that decorated his surgical career. Dr. Graham is credited with being the first surgeon to successfully enucleate an insulinoma. He ventured to do an essentially brand new operation based solely on his patient\u27s symptoms and physical findings, a courageous move that even some of the most talented surgeons would shy away from. He also spent a large portion of his career dedicated to the study of rectal prolapse, working tirelessly to rid his patients of this awful affliction. He was recognized by a number of different surgical associations for his operative successes and was awarded membership to those both in Canada and the United States. Despite all of these accolades, Dr. Graham remained grounded and always fervent in his dedication to the patient and their presenting symptom(s), reminding us that to do anything more would be meddlesome. In an age when medical professionals are often all too eager to make unnecessary interventions, it is imperative that we look back at our predecessors such as Roscoe Reid Graham, for they will continually redirect us toward our one and only obligation: the patient
Sparse Coding Predicts Optic Flow Specificities of Zebrafish Pretectal Neurons
Zebrafish pretectal neurons exhibit specificities for large-field optic flow
patterns associated with rotatory or translatory body motion. We investigate
the hypothesis that these specificities reflect the input statistics of natural
optic flow. Realistic motion sequences were generated using computer graphics
simulating self-motion in an underwater scene. Local retinal motion was
estimated with a motion detector and encoded in four populations of
directionally tuned retinal ganglion cells, represented as two signed input
variables. This activity was then used as input into one of two learning
networks: a sparse coding network (competitive learning) and backpropagation
network (supervised learning). Both simulations develop specificities for optic
flow which are comparable to those found in a neurophysiological study (Kubo et
al. 2014), and relative frequencies of the various neuronal responses are best
modeled by the sparse coding approach. We conclude that the optic flow neurons
in the zebrafish pretectum do reflect the optic flow statistics. The predicted
vectorial receptive fields show typical optic flow fields but also "Gabor" and
dipole-shaped patterns that likely reflect difference fields needed for
reconstruction by linear superposition.Comment: Published Conference Paper from ICANN 2018, Rhode
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Secondary acute lymphoblastic leukemia is a distinct clinical entity with prognostic significance.
The effect of prior malignancy on the risk of developing, and prognosis of, acute lymphoblastic leukemia (ALL) is unknown. This observational study utilized the California Cancer Registry to estimate the risk of developing ALL after a prior malignancy using standardized incidence ratios (SIRs, 95% confidence intervals). ALL occurring after a malignancy with an SIR>1 (increased-risk (IR) malignancies) was considered secondary ALL (s-ALL). Adjusted hazard ratios (aHRs, 95% confidence intervals) compared the effect of s-ALL with de novo ALL on overall survival. A total of 14 481 patients with ALL were identified (1988-2012) and 382 (3%) had a known prior malignancy. Any prior malignancy predisposed patients to developing ALL: SIR 1.62 (1.45-1.79). Hematologic malignancies (SIR 5.57, 4.38-6.98) and IR-solid tumors (SIR 2.11, 1.73-2.54) increased the risk of developing ALL. s-ALL increased the risk of death compared with de novo ALL (aHR 1.38 (1.16-1.63)) and this effect was more pronounced among younger patients (age<40 years: aHR 4.80 (3.15-7.30); age⩾40 years: aHR 1.40 (1.16-1.69)) (interaction P<0.001). This population-based study demonstrates that s-ALL is a distinct entity that occurs after specific malignancies and carries a poor prognosis compared with de novo ALL, particularly among patients <40 years of age
Mary H. Gibbon: teamwork of the heart.
Mary Maly Hopkinson Gibbon was born on September 25, 1903, to an affluent New England family who encouraged her to embrace her intelligence and to follow that by which she was intrigued. In doing this, Maly pursued work in scientific research, where she ultimately met her first husband, Dr. John ‘‘Jack’’ H. Gibbon. Jack and Maly were partners in every sense of the word. Their collaboration, both within and beyond the walls of the research laboratory, made it possible for the Gibbon dream of the heart–lung machine to be realized
Temperature dependent photoluminescence of single CdS nanowires
Temperature dependent photoluminescence (PL) is used to study the electronic
properties of single CdS nanowires. At low temperatures, both near-band edge
(NBE) photoluminescence (PL) and spatially-localized defect-related PL are
observed in many nanowires. The intensity of the defect states is a sensitive
tool to judge the character and structural uniformity of nanowires. As the
temperature is raised, the defect states rapidly quench at varying rates
leaving the NBE PL which dominates up to room temperature. All PL lines from
nanowires follow closely the temperature-dependent band edge, similar to that
observed in bulk CdS.Comment: 11 pages, 4 figure
Classroom Teacher’s Adherence to Philosophy and Ethics of Home Economics for Sustainable Development in Anambra State Nigeria
This study analyzed and discussed the philosophy and goals of education, evaluating them on how classroom teachers adhere to the ethics of home economics for sustainable development in Anambra state, Nigeria. A descriptive survey design was used and the sample, randomly selected, was made up of two hundred (200) home economics teachers in public (government owned) secondary schools in Anambra state, through the random sampling method. A structured questionnaire used for data collection was analysed with mean ratings. Findings indicate that the teachers are aware of the philosophy and ethics in home economics and to some extent; they are applying them to maintain their professionalism. However, the adherence t o principles of clothing with regards to practical work in choosing clothes, sewing or mending them and how students are to use and care for clothing needs of the family is poor. It was recommended among others, that vocational education teacher, especially home economics teachers, should adopt an in-dept practical oriented training sessions in classrooms, to be able to pass to the future generation the traditions of home economics.Key words: Home Economics, Secondary School, Teachers and students, Adherence, philosophy and Ethics, sustainable Development
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