The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Charles K. Minns - One of the best experts on this subject based on the ideXlab platform.
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direct and indirect estimates of the Productive Capacity of fish habitat under canada s policy for the management of fish habitat where have we been where are we now and where are we going
Canadian Journal of Fisheries and Aquatic Sciences, 2011Co-Authors: Charles K. Minns, Robert G Randall, Karen E. Smokorowski, Keith D. Clarke, Robert S. Gregory, Simon C. Courtenay, Antonio Velezespino, Patrice LeblancAbstract:No net loss of Productive Capacity (PC) of fish habitat has been the central concept guiding Canadian fish habitat management policy since 1986. The purpose of this paper is to describe the concept of PC, to review the history and application of the fish habitat management policy in Canada, and to provide a critical review of the range of potential approaches to estimating PC. The approaches were grouped by their central focus: habitat, individual, population, and community–ecosystem. A set of case studies is used to illustrate the use of some approaches drawn from freshwater and marine contexts. Ten components to assessing no net loss of PC were developed and used in the review of approaches for evaluating potential limitations. The review also highlighted the likely future direction of method development, with increasing emphasis on dynamic models integrating population responses to habitat supply characteristics. More work needs to be done to turn research-based metrics of PC into practical operational...
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Direct and indirect estimates of the Productive Capacity of fish habitat under Canada’s Policy for the Management of Fish Habitat: where have we been, where are we now, and where are we going?
Canadian Journal of Fisheries and Aquatic Sciences, 2011Co-Authors: Charles K. Minns, Robert G Randall, Karen E. Smokorowski, Keith D. Clarke, Antonio Velez-espino, Robert S. Gregory, Simon C. Courtenay, Patrice LeblancAbstract:No net loss of Productive Capacity (PC) of fish habitat has been the central concept guiding Canadian fish habitat management policy since 1986. The purpose of this paper is to describe the concept of PC, to review the history and application of the fish habitat management policy in Canada, and to provide a critical review of the range of potential approaches to estimating PC. The approaches were grouped by their central focus: habitat, individual, population, and community–ecosystem. A set of case studies is used to illustrate the use of some approaches drawn from freshwater and marine contexts. Ten components to assessing no net loss of PC were developed and used in the review of approaches for evaluating potential limitations. The review also highlighted the likely future direction of method development, with increasing emphasis on dynamic models integrating population responses to habitat supply characteristics. More work needs to be done to turn research-based metrics of PC into practical operational...
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The potential future impact of climate warming and other human activities on the Productive Capacity of Canada's lake fisheries: a meta-model
Aquatic Ecosystem Health & Management, 2009Co-Authors: Charles K. MinnsAbstract:A simple meta-model was used to examine how climate warming and stresses due to other human activities might affect the Productive Capacity of fisheries in all of Canada's lakes. Recent estimates of lake resource characteristics by secondary watershed and area size-class provided the basis for the model. Potential fishery productivity was estimated using a variant of the Schlesinger and Regier (1982) model which had lake mean depth, total dissolved solids concentration, and mean annual air temperature as inputs. A business-as-usual climate change scenario (SRES A2) was used to estimate worst case future temperature increases (4.5–8.3°C by the 2080s). The stress index from Chu et al. (2003) was used as a proxy for the impact on fisheries of other human activities. Projected populations for the SRES A2 scenario were used to scale future stress index levels. Potential biotic responses to warming were represented in two ways; the first as potential biotic displacement of currently dominant species when temper...
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compensation ratios needed to offset timing effects of losses and gains and achieve no net loss of Productive Capacity of fish habitat
Canadian Journal of Fisheries and Aquatic Sciences, 2006Co-Authors: Charles K. MinnsAbstract:Minns' (Can. J. Fish. Aquat. Sci. 54: 24632473 (1997)) framework for assessing net change of Productive Capacity of fish habitats in Canada is expanded to include the effect of timing of losses and gains on cumulative net change. The expansion requires establishment of a reference time frame for assessment. A time frame of twice the project's duration is recommended. Delaying compensation actions while incurring losses early in a project increases the levels of compensation required. The addition of future discounting had much less effect on compensation requirements than the effects resulting from timing differences between losses and compensation. As discounts apply equally to losses and gains, they likely balance out over time. Delays between when habitat alterations occur and when expected Productive Capacity is attained increase the required compensation. There are advantages to starting compensation efforts early in a development project. A case study of a hypothetical northern diamond mine shows h...
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Compensation ratios needed to offset timing effects of losses and gains and achieve no net loss of Productive Capacity of fish habitat
Canadian Journal of Fisheries and Aquatic Sciences, 2006Co-Authors: Charles K. MinnsAbstract:Minns' (Can. J. Fish. Aquat. Sci. 54: 24632473 (1997)) framework for assessing net change of Productive Capacity of fish habitats in Canada is expanded to include the effect of timing of losses and gains on cumulative net change. The expansion requires establishment of a reference time frame for assessment. A time frame of twice the project's duration is recommended. Delaying compensation actions while incurring losses early in a project increases the levels of compensation required. The addition of future discounting had much less effect on compensation requirements than the effects resulting from timing differences between losses and compensation. As discounts apply equally to losses and gains, they likely balance out over time. Delays between when habitat alterations occur and when expected Productive Capacity is attained increase the required compensation. There are advantages to starting compensation efforts early in a development project. A case study of a hypothetical northern diamond mine shows how various components of compensation (replacement, uncertainty, and timing) can be integrated when assessing net change. Consideration of all components of compensation indicates the need for tougher precautionary compensation guidelines with ratios greater than the current 1:1. Values of 2:1 or higher may be necessary to ensure attainment of Canada's guiding policy principle of no net loss.
Xueqi Wei - One of the best experts on this subject based on the ideXlab platform.
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the strategic value of information technology in setting Productive Capacity
Information Systems Research, 2019Co-Authors: Dawei Zhang, Barrie R Nault, Xueqi WeiAbstract:Capacity is the maximum short-run output with capital in place under normal operations, and capital investment increases Capacity. Excess Capacity can be used as entry deterrence by lowering averag...
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the strategic value of it in setting Productive Capacity
2019Co-Authors: Dawei Zhang, Barrie R Nault, Xueqi WeiAbstract:Capacity is the maximum short run output with capital in place under normal operations, and capital investment increases Capacity. Excess Capacity can be used as an economic strategy for entry deterrence by lowering average costs over a greater range of output, and as an operations strategy providing value through flexibility to manage demand fluctuations and production disturbances. Our primary focus is to study the way that information technology (IT) can contribute to a strategy of holding excess Capacity by comparing the relationship between IT capital and Capacity with that of non-IT capital and Capacity. Using production theory-based empirical analyses, we find that increases in IT capital yield almost four-fold greater expansion in Capacity than do increases in non-IT capital. Thus, as both types of capital are constraints on Capacity, for a strategy of holding excess Capacity IT capital is a more valuable constraint to relax than non-IT capital. In addition, since the late 1990s, IT capital, and to a lesser extent non-IT capital, have reduced Capacity utilization (output/Capacity), meaning increasing levels of excess Capacity are being held across manufacturing industries and utilities across the economy.
Scott L Baggett - One of the best experts on this subject based on the ideXlab platform.
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a remote sensing protocol for identifying rangelands with degraded Productive Capacity
Ecological Indicators, 2014Co-Authors: Matthew C Reeves, Scott L BaggettAbstract:Abstract Rangeland degradation is a growing problem throughout the world. An assessment process for comparing the trend and state of vegetation productivity to objectively derived reference conditions was developed. Vegetation productivity was estimated from 2000 to 2012 using annual maximum Normalized Difference Vegetation Index (NDVI) from the MODIS satellite platform. Each pixel was compared with reference conditions derived from surrounding pixels on similar sites with nearly identical potential species assemblages, vegetation structure and productivity. Trends in degradation were determined by comparison between the slopes of the linear trends in mean annual maximum NDVI at each pixel and reference conditions with a one-sample t-test. In contrast, the state or “status” of degradation at each pixel was evaluated by comparing the mean annual response of NDVI between 2000 and 2012 to that of reference conditions over the same time period using a one-sample t-test. These procedures to evaluate trends and status of rangelands were applied across northern and southern Great Plains of the United States. Trends in degradation were almost undetectable across the entire study area. In contrast the degradation status assessment revealed that 16% (7,330,625 ha) of the vegetation on the northern Great Plains and 9% (3,295,106 ha) of the southern Great Plains were significantly different (p ≤ 0.01) from reference conditions. The amount of annual net primary reduction lost resulting from these degraded lands relative to reference conditions was estimated at 2.02 Tg C yr−1, less than 1% of the total annual net primary production in the study area of 212 Tg C yr−1.
Gustavo Barros - One of the best experts on this subject based on the ideXlab platform.
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The Development of the Brazilian Steel-Making Sector Between 1900 and 1940: Firm Creation and Evolution of Productive Capacity [O desenvolvimento do setor siderúrgico brasileiro entre 1900 e 1940: Criação de empresas e evolução da capacidade produtiv
2013Co-Authors: Gustavo BarrosAbstract:Despite the existence of several attempts to produce iron locally not only along the colonial period but also along the Empire, for different reasons these endeavors failed, each in its own time, and the Brazilian steel-making entered the 20 th century with very little practical expression. However, when the Companhia Siderurgica Nacional (CSN, National Steel Company) was created, in 1941, as an answer to the national steel problem, the domestic steel industry had already a much more significant expression. By the end of the 1930s, it had already 26 firms with a reasonably diversified production which supplied a relevant share of the internal demand. Thus, between 1900 and 1940, and especially in the 1920s and 1930s, the Brazilian steel-making sector was capable of conducing an important development process. The reconstruction of this process of evolution experienced by the steel-making sector, focused on the creation of firms and on the expansion of Productive Capacity, is the object of this paper.
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O desenvolvimento do setor siderúrgico brasileiro entre 1900 e 1940: Criação de empresas e evolução da capacidade produtiva [The development of the Brazilian steel-making sector between 1900 and 1940: Firm creation and evolution of Productive capacit
2013Co-Authors: Gustavo BarrosAbstract:Despite the existence of several attempts to produce iron locally not only along the colonial period but also along the Empire, for different reasons these endeavors failed, each in its own time, and the Brazilian steel-making entered the 20th century with very little practical expression. However, when the Companhia Siderurgica Nacional (CSN, National Steel Company) was created, in 1941, as an answer to the national steel problem, the domestic steel industry had already a much more significant expression. By the end of the 1930s, it had already 26 firms with a reasonably diversified production which supplied a relevant share of the internal demand. Thus, between 1900 and 1940, and especially in the 1920s and 1930s, the Brazilian steel-making sector was capable of conducing an important development process. The reconstruction of this process of evolution experienced by the steel-making sector, focused on the creation of firms and on the expansion of Productive Capacity, is the object of this paper.
Dawei Zhang - One of the best experts on this subject based on the ideXlab platform.
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the strategic value of information technology in setting Productive Capacity
Information Systems Research, 2019Co-Authors: Dawei Zhang, Barrie R Nault, Xueqi WeiAbstract:Capacity is the maximum short-run output with capital in place under normal operations, and capital investment increases Capacity. Excess Capacity can be used as entry deterrence by lowering averag...
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the strategic value of it in setting Productive Capacity
2019Co-Authors: Dawei Zhang, Barrie R Nault, Xueqi WeiAbstract:Capacity is the maximum short run output with capital in place under normal operations, and capital investment increases Capacity. Excess Capacity can be used as an economic strategy for entry deterrence by lowering average costs over a greater range of output, and as an operations strategy providing value through flexibility to manage demand fluctuations and production disturbances. Our primary focus is to study the way that information technology (IT) can contribute to a strategy of holding excess Capacity by comparing the relationship between IT capital and Capacity with that of non-IT capital and Capacity. Using production theory-based empirical analyses, we find that increases in IT capital yield almost four-fold greater expansion in Capacity than do increases in non-IT capital. Thus, as both types of capital are constraints on Capacity, for a strategy of holding excess Capacity IT capital is a more valuable constraint to relax than non-IT capital. In addition, since the late 1990s, IT capital, and to a lesser extent non-IT capital, have reduced Capacity utilization (output/Capacity), meaning increasing levels of excess Capacity are being held across manufacturing industries and utilities across the economy.
