565 research outputs found
Affects Of High Winds On Vitis vinifera Buds During Post-dormancy
Vitis Vinifera’s growth and fruit development are both highly affected by the
environmental stresses that the plants undergo. High winds have been shown to
negatively affect Vitis Vinifera through decreased time of stomata opening. The problem
observed were buds dying during the post dormancy hypothesized to be caused by high
winds creating water loss. To test this five different varietals are used with each
containing a Wind Fence group, a Control group, Irrigation group, and multiple antitranspirant
groups. To test the hardiness of the lateral buds from the different groups bud
break assays, dehydration assays, and thermal imaging has been done. Upon analysis of
the results there was a difference about the genotypes but no statistically significant
difference between the treatments. This year there was no need for application of the
treatments as there was no added benefit to the buds
Construction of Parseval wavelets from redundant filter systems
We consider wavelets in L^2(R^d) which have generalized multiresolutions.
This means that the initial resolution subspace V_0 in L^2(R^d) is not singly
generated. As a result, the representation of the integer lattice Z^d
restricted to V_0 has a nontrivial multiplicity function. We show how the
corresponding analysis and synthesis for these wavelets can be understood in
terms of unitary-matrix-valued functions on a torus acting on a certain vector
bundle. Specifically, we show how the wavelet functions on R^d can be
constructed directly from the generalized wavelet filters.Comment: 34 pages, AMS-LaTeX ("amsproc" document class) v2 changes minor typos
in Sections 1 and 4, v3 adds a number of references on GMRA theory and
wavelet multiplicity analysis; v4 adds material on pages 2, 3, 5 and 10, and
two more reference
MÉTODO DE EVALUCIÓN ESTRUCTURADA COMO HERRAMIENTA PARA EL CUIDADO FAMILIAR: EVALUACION DEL APGAR FAMILIAR
The importance of family assessment tools to the practicing family practice clinician cannot be stressed enough. Models are less practical than assessment tools and inventories in clinical practice. A structured method to evaluate assessment tools is presented. The Family APGAR is assessed using this method to demonstrate its usefulness to the family practice clinician. The intent of the structured method of evaluating each tool is to facilitate both the choice of a family assessment tool by the clinician and in the teaching of family assessment to those who use a family focus in their clinical care of patients.La importancia de tener instrumentos de evaluación para la practica clínica de la familia, no ha tenido el énfasis suficiente. Los Modelos son menos prácticos que sus instrumentos e inventarios en la práctica clínica un método estructurado para evaluar esos instrumentos. El APGAR Familiar es evaluado usando este método a fin de mostrar su utilidad al clínico de la práctica de familia. La intención del método estructurado de evaluar cada instrumento es facilitar la elección de un instrumento que empleado por el clinico sea aplicable a la familia y en el enseño de la evaluación de la familia la colocan como foco en el cuidado clínico de sus pacientes.A importância de instrumentos de avaliação para o praticante da prática clínica de família não tem tido a ênfase suficiente. Modelos são menos práticos do que seus instrumentos e inventários na prática clínica. Um método estruturado para avaliar instrumentos de avaliação é apresentado. O APGAR Famíliar é avaliado usando este método para demonstrar sua utilidade ao clínico da prática de família. A intenção do método estruturado de avaliar cada instrumento é facilitar a escolha de um instrumento para avaliação da família pelo clínico e no ensino da avaliação da família àquelas que usam a família como foco no cuidado clínico de seus pacientes
Rotor interaction in the annulus billiard
Introducing the rotor interaction in the integrable system of the annulus
billiard produces a variety of dynamical phenomena, from integrability to
ergodicity
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Food Insecurity and Metabolic Control Among U.S. Adults With Diabetes
OBJECTIVE We sought to determine whether food insecurity is associated with worse glycemic, cholesterol, and blood pressure control in adults with diabetes. RESEARCH DESIGN AND METHODS We conducted a cross-sectional analysis of data from participants of the 1999–2008 National Health and Nutrition Examination Survey. All adults with diabetes (type 1 or type 2) by self-report or diabetes medication use were included. Food insecurity was measured by the Adult Food Security Survey Module. The outcomes of interest were proportion of patients with HbA1c >9.0% (75 mmol/mol), LDL cholesterol >100 mg/dL, and systolic blood pressure >140 mmHg or diastolic blood pressure >90 mmHg. We used multivariable logistic regression for analysis. RESULTS Among the 2,557 adults with diabetes in our sample, a higher proportion of those with food insecurity (27.0 vs. 13.3%, P 9.0% (75 mmol/mol). After adjustment for age, sex, educational attainment, household income, insurance status and type, smoking status, BMI, duration of diabetes, diabetes medication use and type, and presence of a usual source of care, food insecurity remained significantly associated with poor glycemic control (odds ratio [OR] 1.53 [95% CI 1.07–2.19]). Food insecurity was also associated with poor LDL control before (68.8 vs. 49.8, P = 0.002) and after (1.86 [1.01–3.44]) adjustment. Food insecurity was not associated with blood pressure control. CONCLUSIONS Food insecurity is significantly associated with poor metabolic control in adults with diabetes. Interventions that address food security as well as clinical factors may be needed to successfully manage chronic disease in vulnerable adults
Determinants of Performance in Smallholder Farmer Groups in Uganda
The performance of farmer groups is critical for the success of the farmer-led Agricultural Extension approach currently used in Uganda. This study examines factors affecting performance of farmer groups accessing agricultural extension and advisory services from the National Agricultural Advisory Services in Eastern Uganda. The study collected data 200 members of 19 farmer groups in Eastern Uganda. Performance of farmer groups was the dependent variable, which was perceived to be influenced by individual members’ objectives, participation culture, power distance, structure of task, perceived equity, reward allocation and participation in group activities. Farmer group performance had a statistically significant positive relationship with power distance and perceived equity. Group participation culture and structure of tasks had a statistically negative relationship with group performance. Members tended to deflect group losses to factors beyond the seasonality of group activities, quality of farm inputs, and poor training delivered by advisory service providers. The advisory service providers and farmer group members need to use the political and social capital possessed by the local leadership, groups and community members for enhancing support and collective participation of the community in farmer groups. Since farmer groups are a sub-set of wider community, this empirical study brings into perspective the role of community culture in influencing performance of farmer groups in smallholder farming communities
Epidemiology of COVID-19 among people experiencing homelessness: Early evidence from Boston
People experiencing homelessness are at high risk for coronavirus disease (COVID-19). We estimated population frequencies of confirmed COVID-19 cases among adults experiencing homelessness in Boston relative to the Massachusetts adult population. Over a 15-day period, 182 homeless adults in Boston were diagnosed with COVID-19 for an estimated cumulative frequency of 46.3 cases per 1000 persons, as compared to 1.9 cases per 1000 among Massachusetts adults on the same date. The trajectory and burden of COVID-19 cases among homeless adults suggests that cities should prepare urgently for the possibility of a COVID-19 surge in this population.https://deepblue.lib.umich.edu/bitstream/2027.42/154734/1/Baggett Deep Blue article.pdfDescription of Baggett Deep Blue article.pdf : Main articl
The demographic consequences of growing older and bigger in oyster populations
Structured population models, particularly size-or age-structured, have a long history of informing conservation and natural resource management. While size is often easier to measure than age and is the focus of many management strategies, age-structure can have important effects on population dynamics that are not captured in size-only models. However, relatively few studies have included the simultaneous effects of both age-and size-structure. To better understand how population structure, particularly that of age and size, impacts restoration and management decisions, we developed and compared a size-structured integral projection model (IPM) and an age-and size-structured IPM, using a population of Crassostrea gigas oysters in the northeastern Pacific Ocean. We analyzed sensitivity of model results across values of local retention that give populations decreasing in size to populations increasing in size. We found that age-and size-structured models yielded the best fit to the demographic data and provided more reliable results about long-term demography. Elasticity analysis showed that population growth rate was most sensitive to changes in the survival of both large (\u3e175 mm shell length) and small (length) oysters, indicating that a maximum size limit, in addition to a minimum size limit, could be an effective strategy for maintaining a sustainable population. In contrast, the purely size-structured model did not detect the importance of large individuals. Finally, patterns in stable age and stable size distributions differed between populations decreasing in size due to limited local retention and populations increasing in size due to high local retention. These patterns can be used to determine population status and restoration success. The methodology described here provides general insight into the necessity of including both age-and size-structure into modeling frameworks when using population models to inform restoration and management decisions
Harmonic analysis of iterated function systems with overlap
In this paper we extend previous work on IFSs without overlap. Our method
involves systems of operators generalizing the more familiar Cuntz relations
from operator algebra theory, and from subband filter operators in signal
processing.Comment: 37 page
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