3,800 research outputs found
THE CHANGING POLITICAL ENVIRONMENT FOR TOBACCO: IMPLICATIONS FOR SOUTHERN TOBACCO FARMERS, RURAL ECONOMIES, TAXPAYERS, AND CONSUMERS: DISCUSSION
agriculture principles, health principles, tobacco industry, tobacco program, Agricultural and Food Policy,
The Historic Role of Boards of Health in Local Innovation: New York Cityâs Soda Portion Case
Childhood and adult obesity pose major risks for cancer, diabetes, and cardiovascular disease, with the poor and racial minorities suffering from disproportionately high burdens of obesity and chronic disease. With current policies failing, cities and states have moved forward with creative prevention measuresâ-with boards of health driving policy innovation in many local jurisdictions. The New York City Board of Board of Healthâs (NYCBH) soda portion limit pushed the boundaries of innovation, but was struck down on June 26, 2014 by New York Stateâs highest court, which held that the Board trespassed on the City Councilâs authority.
The Courtâs decision ignored the critical role of local health agencies in responding to 21st century public health threats, including epidemics of obesity and chronic disease. The Court narrowly construed the NYCBHâs authority, characterizing its powers as administrative, and thus potentially stifling local innovation. The decision also obscured the fundamental truth that public health policymaking requires complex trade-offs and incremental action, as well as a multifaceted approach to reducing population weight gain. Policymaking often relies upon limited evidence, and agencies experiment with novel ideas while also transforming social norms and pushing the boundaries of public opinion. Although the portion rule would disproportionately affect disadvantaged individuals who drink the largest amount of soda, governmentâs failure to act represents a greater injustice. Enhancing opportunities to choose a healthy life path better serves the interests of justice, but the Courtâs judgment takes us further away from realizing this social aspiration
Reduction of blocking artifacts in both spatial domain and transformed domain
In this paper, we propose a bi-domain technique to reduce the blocking artifacts commonly incurred in image processing. Some pixels are sampled in the shifted image block and some high frequency components of the corresponding transformed block are discarded. By solving for the remaining unknown pixel values and the transformed coefficients, a less blocky image is obtained. Simulation results using the Discrete Cosine Transform and the Slant Transform show that the proposed algorithm gives a better quantitative result and image quality than that of the existing methods
Support Group Effects on Perceived Ease of Transition of the LPN to AD Student
The objectives of this study were: 1. To determine the expectations of the members entering a support group developed for the purpose of easing the transition from LPN to AD student. 2. To determine the extent those expectations are met by participation in the support group. 3. To determine the extent of perceived stressors change after participation in the support group as related to: a. type of identified stressor b. degree to which an identified stressor is a source of stress
Possible Skull Base Erosion After Prolonged Frontal Sinus Stenting
Frontal sinus stenting is widely used with the goal of maintaining nasofrontal duct patency after sinus surgery. The general recommendation is to leave stents in place for 6 months; however, prolonged stenting up to 6 years has been reported with no complication. We present the first reported case of frontal sinus posterior table and skull base erosion following prolonged frontal sinus stenting. A 57-year-old female presented with chronic sinusitis and nasal obstruction. Imaging revealed pansinusitis with retained stents in each frontal sinus that were placed 8 years prior. On the right, there was an area of skull base erosion at the tip of the stent. The patient underwent functional endoscopic sinus surgery with polypectomy. The stents were removed, revealing posterior table erosion on the right side but intact mucosa. Two months after surgery, there were no signs or symptoms of cerebrospinal fluid leak or other complications. Recent literature has suggested that prolonged stenting is safe; however, this case highlights a complication with potentially serious outcomes that can result from prolonged stenting. We recommend stent removal once stable nasofrontal duct patency has been achieved. If prolonged stenting is utilized, patients should be closely monitored and consideration should be given to periodic imaging to evaluate stent position
On some non-conformal fractals
This paper presents a simple method of calculating the Hausdorff dimension
for a class of non-conformal fractals
The Pygmy Whitefish, Coregonus Coulteri, in Lake Superior
Bottom trawling by the U. S. Fish and Wildlife Service motor vessel Cisco in Lake Superior in 1952â1953 revealed a large population of a tiny whitefish, Coregonus (Prosopium) coulteri, which has been reported previously only from northwestern North America. The hiatus in range, from Lake Superior to the Columbia River basin, is the greatest known for a North American freshwater fish. Although minor structural differences characterize the disjunct populations of the pygmy whitefish, these are not deemed worthy of nomenclatorial recognition. Comparisons with related species indicate that the pygmy whitefish is distinctive in the small size, large scales, few vertebrae, few pyloric caeca, and in other characters.The pygmy whitefish is widely distributed in Lake Superior, especially in semiâprotected bays, such as Keweenaw Bay which yielded about 68 percent of the 1,623 specimens caught. The bathymetric range was 10 to 49 fathoms, with maximum abundance at the 25â to 39âfathom interval. Average length of fish increased progressively with water depth, chiefly because the number of yearlings declined from 100 percent at 10â14 fathoms to none at 45â49 fathoms.The average total length of pygmy whitefish caught by trawling was 3.4 inches (range 1.2 to 5.7). Extraordinarily slow growth was revealed by the examination of scales. Two fish from Keweenaw Bay, both nearing the end of their eighth growing season, were only 5.4 inches long. Compared to Keweenaw Bay, growth rate was about the same near Laughing Fish Point, faster in the Apostle Islands (and in Bull and McDonald Lakes, Montana), and slower in Siskiwit Bay, Isle Royale. Females grew more rapidly than males after the second year and had a longer life span.All male pygmy whitefish were mature at the age of 2 years and a total length of 3.6 or more inches. Most females were mature at 3 years and 4.2 inches; all older females were mature. Mean egg production was 362 (range, 93 to 597) per fish and 26 per gram of total weight for fish from 3.4 to 5.9 inches long. Spawning in 1953 occurred sometime in November or December.Crustacea (principally ostracods and amphipodsâcopepods in the young) occurred in 106 of 112 pygmy whitefish stomachs and made up 77 percent of the total food volume. When available, fish eggs appear to be important in the diet.Other coldâwater fishesâcottids, ninespine sticklebacks, smelt, and four species of coregoninesâwere the most frequent associates of the pygmy whitefish. Lake trout and troutâperch were also taken with it at the same stations or in the same trawl hauls. Its closest relative in Lake Superior, the round whitefish, was not an ecological associate.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141996/1/tafs0161.pd
The impact of host species and vector control measures on the fitness of African malaria vectors
Many malaria vector mosquitoes in Africa have an extreme preference for feeding on humans. This specialization allows them to sustain much higher levels of transmission than elsewhere, but there is little understanding of the evolutionary forces that drive this behaviour. In Tanzania, we used a semi-field system to test whether the well-documented preferences of the vectors An. arabiensis and An. gambiae s.s. for cattle and humans respectively are predicted by the fitness they obtain from host-seeking on these species relative to other available hosts. Mosquito fitness was contrasted when humans were fully exposed, and when they were protected by a typical bednet. The fitness of both vectors varied between host species. The predicted relationship between host preference and fitness was confirmed in An. arabiensis, but not in An. gambiae s.s. whose fitness was similar on humans and other mammals. Use of typical, imperfect bednets generated only minor reductions in An. gambiae s.s. feeding success and fitness on humans, but was predicted to generate a significant reduction in the lifetime reproductive success of An. arabiensis on human relative to cows. This supports the hypothesis that such human-protective measures could additionally benefit malaria control by increasing selection for zoophily in vectors
Morphodynamic evolution of an estuary inlet
This paper presents the application of a morphodynamic model based on 2D reduced-physics principles to
investigate morphology change of a complex estuary inlet system in the United Kingdom. The model
combines a simple governing equation with a set of measured bathymetry data in order to model
morphology change. The modelling method suggests that this simplified approach is able to recognise
principal medium term morphodynamic trends in the estuary. However, the length and quality of the
estuary bathymetry data set limits the applicability of the model to inter-annual scale
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