The Experts below are selected from a list of 28272 Experts worldwide ranked by ideXlab platform
Virginia H. Dale - One of the best experts on this subject based on the ideXlab platform.
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ecological support for rural land use planning
Ecological Applications, 2005Co-Authors: David M. Theobald, Thomas A. Spies, Jeffrey D. Kline, Bruce D. Maxwell, N. T. Hobbs, Virginia H. DaleAbstract:How can ecologists be more effective in supporting ecologically informed rural land-use planning and policy? Improved decision making about rural lands requires careful consideration of how ecological information and analyses can inform specific planning and policy needs. We provide a brief overview of rural land-use planning, including recently developed approaches to conservation. Effective participation in land-use planning requires ecologists to understand trade-offs—for example, the need to balance a land owner's desire for a fair and Predictable Process with the “learn as you go” approach of adaptive management—and the importance of integrating local knowledge with landscape-level information. Four primary challenges require attention from ecologists to improve rural land-use planning. First is the mismatch between the spatial and temporal scales in which ecological Processes occur and the scales and tempos of land-use planning. Second, ecologists must engage in interdisciplinary research to critica...
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ECOLOGICAL SUPPORT FOR RURAL LAND‐USE PLANNING
Ecological Applications, 2005Co-Authors: David M. Theobald, Thomas A. Spies, Jeffrey D. Kline, Bruce D. Maxwell, N. T. Hobbs, Virginia H. DaleAbstract:How can ecologists be more effective in supporting ecologically informed rural land-use planning and policy? Improved decision making about rural lands requires careful consideration of how ecological information and analyses can inform specific planning and policy needs. We provide a brief overview of rural land-use planning, including recently developed approaches to conservation. Effective participation in land-use planning requires ecologists to understand trade-offs—for example, the need to balance a land owner's desire for a fair and Predictable Process with the “learn as you go” approach of adaptive management—and the importance of integrating local knowledge with landscape-level information. Four primary challenges require attention from ecologists to improve rural land-use planning. First is the mismatch between the spatial and temporal scales in which ecological Processes occur and the scales and tempos of land-use planning. Second, ecologists must engage in interdisciplinary research to critica...
Yan-xia Lin - One of the best experts on this subject based on the ideXlab platform.
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A New Kind of Asymptotic Quasi-Score Estimating Function
Scandinavian Journal of Statistics, 2000Co-Authors: Yan-xia LinAbstract:A new definition of asymptotic quasi-score sequence of estimating functions is given and studied. The relationship between asymptotic quasi-likelihood and quasi-likelihood estimates is investigated. A new practical approach for obtaining a good estimate of θ in the model y t = f t (θ) + m t without any prior knowledge on the nature of E(m 2 t |F t-1 ) is suggested, where f t is a Predictable Process and m t is a martingale difference Process. Two examples are used to show that the approach is practicable.
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Convergence to Normality of the Asymptotic Quasi-Score Function on a Linear Model
Biometrical Journal, 2000Co-Authors: Sifa Mvoi, Yan-xia LinAbstract:The asymptotic quasi-likelihood method is considered for the model yt = ft(θ) + Mt, t = 0,1, …,T where ftθ) is a linear Predictable Process of the parameter of interest θ, Mt is a martingale difference, and the nature of E(Mt2 | ℱt–1) is unknown. This paper is concerned with the limiting distribution of the asymptotic quasi-score function of such a model. Confidence intervals and hypothesis testing of θ is derived from the limiting distribution. Comparison is made between the estimates obtained through this method and those obtained through the least squares method.
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A PRACTICAL PROCEDURE FOR ESTIMATION OF LINEAR MODELS VIA ASYMPTOTIC QUASI-LIKELIHOOD
Journal of Applied Mathematics and Decision Sciences, 1999Co-Authors: Riccardo Biondini, Yan-xia Lin, Sifa MvoiAbstract:This paper is concerned with the application of an asymptotic quasi-likelihood practical procedure to estimate the unknown parameters in linear stochastic models of the form y t = f t ( θ ) + M t ( θ ) ( t = 1 , 2 , .. , T ) , where f t is a linear Predictable Process of θ and M t is an error term such that E ( M t | F t − 1 ) = 0 and E ( M t 2 | F t − 1 ) ∞ and F is a σ -field generated from { y s } s ≤ t . For this model, to estimate the parameter θ ∈ Θ , the ordinary least squares method is usually inappropriate (if there is only one observable path of { y t } and if E ( M t 2 | F t − 1 ) is not a constant) and the maximum likelihood method either does not exist or is mathematically intractable. If the finite dimensional distribution of M t is unknown, to obtain a good estimate of θ an appropriate Predictable Process g t should be determined. In this paper, criteria for determining g t are introduced which, if satisfied, provide more accurate estimates of the parameters via the asymptotic quasi-likelihood method.
David M. Theobald - One of the best experts on this subject based on the ideXlab platform.
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ecological support for rural land use planning
Ecological Applications, 2005Co-Authors: David M. Theobald, Thomas A. Spies, Jeffrey D. Kline, Bruce D. Maxwell, N. T. Hobbs, Virginia H. DaleAbstract:How can ecologists be more effective in supporting ecologically informed rural land-use planning and policy? Improved decision making about rural lands requires careful consideration of how ecological information and analyses can inform specific planning and policy needs. We provide a brief overview of rural land-use planning, including recently developed approaches to conservation. Effective participation in land-use planning requires ecologists to understand trade-offs—for example, the need to balance a land owner's desire for a fair and Predictable Process with the “learn as you go” approach of adaptive management—and the importance of integrating local knowledge with landscape-level information. Four primary challenges require attention from ecologists to improve rural land-use planning. First is the mismatch between the spatial and temporal scales in which ecological Processes occur and the scales and tempos of land-use planning. Second, ecologists must engage in interdisciplinary research to critica...
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ECOLOGICAL SUPPORT FOR RURAL LAND‐USE PLANNING
Ecological Applications, 2005Co-Authors: David M. Theobald, Thomas A. Spies, Jeffrey D. Kline, Bruce D. Maxwell, N. T. Hobbs, Virginia H. DaleAbstract:How can ecologists be more effective in supporting ecologically informed rural land-use planning and policy? Improved decision making about rural lands requires careful consideration of how ecological information and analyses can inform specific planning and policy needs. We provide a brief overview of rural land-use planning, including recently developed approaches to conservation. Effective participation in land-use planning requires ecologists to understand trade-offs—for example, the need to balance a land owner's desire for a fair and Predictable Process with the “learn as you go” approach of adaptive management—and the importance of integrating local knowledge with landscape-level information. Four primary challenges require attention from ecologists to improve rural land-use planning. First is the mismatch between the spatial and temporal scales in which ecological Processes occur and the scales and tempos of land-use planning. Second, ecologists must engage in interdisciplinary research to critica...
Adam Osękowski - One of the best experts on this subject based on the ideXlab platform.
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Burkholder's function and a weighted $L^2$ bound for stochastic integrals
arXiv: Probability, 2020Co-Authors: Rodrigo Bañuelos, Michał Brzozowski, Adam OsękowskiAbstract:Let $X$ be a continuous-path martingale and let $Y$ be a stochastic integral, with respect to $X$, of some Predictable Process with values in $[-1,1]$. We provide an explicit formula for Burkholder's function associated with the weighted $L^2$ bound $$ \|Y\|_{L^2(W)}\lesssim [w]_{A_2}\|X\|_{L^2(W)}.$$
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Sharp maximal inequality for nonnegative martingales
Statistics & Probability Letters, 2011Co-Authors: Adam OsękowskiAbstract:Let X be a nonnegative martingale, let H be a Predictable Process taking values in [−1,1] and let Y be an Ito integral of H with respect to X. We establish the bound ‖supt≥0|Yt|‖1≤3‖supt≥0Xt‖1 and show that the constant 3 is the best possible.
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A maximal inequality for nonnegative sub- and supermartingales
Mathematical Inequalities & Applications, 2011Co-Authors: Adam OsękowskiAbstract:Let X = (Xt)t≥0 be a nonnegative semimartingale and H = (Ht)t≥0 be a Predictable Process taking values in [−1, 1]. Let Y denote the stochastic integral of H with respect to X. We show that (i) If X is a supermartingale, then || sup t≥0 Yt||1 ≤ 3|| sup t≥0 Xt||1 and the constant 3 is the best possible. (ii) If X is a submartingale satisfying ||X||∞ ≤ 1, then || sup t≥0 Yt||p ≤ 2Γ(p + 1), 1 ≤ p
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Sharp maximal inequality for stochastic integrals
Proceedings of the American Mathematical Society, 2008Co-Authors: Adam OsękowskiAbstract:Let X = (Xt)t 0 be a nonnegative supermartingale and H = (Ht)t 0 be a Predictable Process with values in ( 1,1). Let Y denote the stochastic integral of H with respect to X. The paper contains the proof of the sharp inequality sup t 0 ||Yt||1 0||sup t 0 Xt||1,
Bruce D. Maxwell - One of the best experts on this subject based on the ideXlab platform.
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ecological support for rural land use planning
Ecological Applications, 2005Co-Authors: David M. Theobald, Thomas A. Spies, Jeffrey D. Kline, Bruce D. Maxwell, N. T. Hobbs, Virginia H. DaleAbstract:How can ecologists be more effective in supporting ecologically informed rural land-use planning and policy? Improved decision making about rural lands requires careful consideration of how ecological information and analyses can inform specific planning and policy needs. We provide a brief overview of rural land-use planning, including recently developed approaches to conservation. Effective participation in land-use planning requires ecologists to understand trade-offs—for example, the need to balance a land owner's desire for a fair and Predictable Process with the “learn as you go” approach of adaptive management—and the importance of integrating local knowledge with landscape-level information. Four primary challenges require attention from ecologists to improve rural land-use planning. First is the mismatch between the spatial and temporal scales in which ecological Processes occur and the scales and tempos of land-use planning. Second, ecologists must engage in interdisciplinary research to critica...
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ECOLOGICAL SUPPORT FOR RURAL LAND‐USE PLANNING
Ecological Applications, 2005Co-Authors: David M. Theobald, Thomas A. Spies, Jeffrey D. Kline, Bruce D. Maxwell, N. T. Hobbs, Virginia H. DaleAbstract:How can ecologists be more effective in supporting ecologically informed rural land-use planning and policy? Improved decision making about rural lands requires careful consideration of how ecological information and analyses can inform specific planning and policy needs. We provide a brief overview of rural land-use planning, including recently developed approaches to conservation. Effective participation in land-use planning requires ecologists to understand trade-offs—for example, the need to balance a land owner's desire for a fair and Predictable Process with the “learn as you go” approach of adaptive management—and the importance of integrating local knowledge with landscape-level information. Four primary challenges require attention from ecologists to improve rural land-use planning. First is the mismatch between the spatial and temporal scales in which ecological Processes occur and the scales and tempos of land-use planning. Second, ecologists must engage in interdisciplinary research to critica...