554 research outputs found

    Affects Of High Winds On Vitis vinifera Buds During Post-dormancy

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    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

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    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

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    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

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    Introducing the rotor interaction in the integrable system of the annulus billiard produces a variety of dynamical phenomena, from integrability to ergodicity

    Determinants of Performance in Smallholder Farmer Groups in Uganda

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    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

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    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

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    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

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    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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