This paper estimates the shadow price of CO2 from burning crop residue in the Chinese agricultura... more This paper estimates the shadow price of CO2 from burning crop residue in the Chinese agricultural sector and explores the policy implications for decision makers. Using a parametric translog directional distance function, we evaluate the technical efficiency and shadow prices of CO2 reduction for 7 major maize provinces in China from 1996-2013. Our results show that crop yield, cost of total inputs, and percentage of burnt crop residue account for 30%, 10% and 20% of the inefficiency, respectively. The shadow price of CO2 from burning crop residue is estimated to range from 0-1.368 yuan/ha (or US$210.5/t) with an average of 0.496yuan/kg (or US$76/t). Further analysis indicates that the average efficiency will increase by 9% if conservation practices are adopted by assuming 10% decrease in yield and 50% decrease in burnt crop residue under conservation practices compared to conventional practices. The shadow prices in these two cases imply that the whole society will benefit if the ...
Biosecurity implemented on the poultry farms in the United Arab Emirates (UAE), in the form of pr... more Biosecurity implemented on the poultry farms in the United Arab Emirates (UAE), in the form of preparedness against any possible outbreak of disease, is critical for farm survival, safety, and development. Little information on the status of biosecurity readiness for containing any outbreak of poultry disease is available. This study was conducted to evaluate the status of biosecurity on commercial poultry farms in the UAE. Four categories of biosecurity measures/actions: isolation, human and traffic flow, cleaning, and disinfection, and adoption of vaccination protocols were considered. All 37 licensed commercial poultry farms in the country were enrolled in the study’s survey. Cumulative Distribution Functions (CDFs) and Artificial Neural Network statistical (ANN) methods were used for ranking biosecurity on farms, including a breakdown for large and small farms, and to identify areas that require improvements. The ANN is used to correlate preparedness in the focus areas to the po...
as soon as possible after acceptance. Copyediting, typesetting, and review of the resulting proof... more as soon as possible after acceptance. Copyediting, typesetting, and review of the resulting proof will be undertaken on this manuscript before final publication of the Version of Record (VoR). Please note that during production and pre-press, errors may be discovered which could affect the content.
This paper explores the sustainable intensification possibilities facing smallholder farmers in E... more This paper explores the sustainable intensification possibilities facing smallholder farmers in Ethiopia. We examine the internal consistency of jointly achieving “sustainable” “intensification” by exploring the factors that lead to complementarity or tradeoffs in the outcomes. A cross-sectional survey of farms was examined in multiple regions of Ethiopia’s Highlands. The results show that some farmers can achieve both sustainability and intensification, while many do not, or cannot achieve both at the same time. We found that some actions have a common impact on both sustainability and intensification, while other factors only affect one outcome. Access to agricultural loans and farm mechanization significantly increases the likelihood of succeeding in sustainable intensification. Access to land will be critical for agricultural sustainability while access to farming information and technical services will drive agricultural intensification. Overall, opportunities to improve both s...
This study examines the trade-off between agricultural production and groundwater contamination p... more This study examines the trade-off between agricultural production and groundwater contamination potential for ten potential herbicide cancellations. Theoretical and empirical models are developed for estimating losses in consumer and producer benefits in the agricultural commodity market and changes in groundwater quality. Using com and soybean production in the southeastern Coastal Plain as a study area, the analysis concludes that (1) effects of herbicide cancellations on groundwater quality can be very significant; (2) a cancellation does not guarantee groundwater quality improvement; (3) effects of a multiple cancellation are different from the summation of the effects of independent cancellations; and (4) weed density has a very strong effect on losses to farmers and consumers from cancellations, but output demand and supply elasticities do not.
Budget Planner is a whole-farm or enterprise budgeting software program that is simple to use for... more Budget Planner is a whole-farm or enterprise budgeting software program that is simple to use for farmers, extension agents, and other budgeters who are sometimes inexperienced, but that also provides the detail necessary to be accurate. Program defaults eliminate repetitive questions that change little from budget to budget. Defaults can be temporarily overridden, or they can be permanently changed with a detailed modify program. The program leads a user through a sequence similar to that a producer might utilize. Input forms were created to enlarge the user clientele and eventually increase computer use by farmers and extension agents.
Increasing frequency of drought and high herbivore pressure significantly affect individual grass... more Increasing frequency of drought and high herbivore pressure significantly affect individual grass functions in semiarid regions. Reseeding of degraded rangelands by native grass species has been recommended as a tool for restoration semiarid rangelands. However, how grass species used for reseeding respond to stressors has not been fully explored. We examined biomass allocation and nutrient contents of Cenchrus ciliaris and Chloris gayana in the semiarid Borana rangelands, Ethiopia. We tested clipped mature tufts of the same species for biomass allocation and nutritive values. Further, shifts in rainfall and herbivory were simulated by three irrigation and four clipping treatments, respectively, for newly established grasses in pot and field plot experiments. Aboveground biomass (AG B) significantly declined by up to 75% under increased clipping in mature tufts. In contrast, clipping significantly stimulated up to 152% higher AG B of newly established grasses. Lower irrigation reduced the AG B by 24 and 42% in C. ciliaris and in C. gayana, respectively. Clipping, further, significantly enhanced grass nutrients in grass tufts by up to 82 and 105% in C. ciliaris and C. gayana, respectively. Hence, management should focus on balancing this trade-off in mature grasses for nutritious rangeland production by clipping and storing for later supplemental feeding when grass nutrients drop. Further, young pastures should be moderately clipped/grazed for better establishment and biomass allocation. Additionally, our experiments established the first interactive effect of clipping and irrigation frequencies on the biomass allocation of native grasses in the semiarid Borana rangelands, Ethiopia. Knowledge of these interacting factors is deemed essential for policy makers to enhance productivity of degraded rangelands such as the Borana rangelands.
Background Climate change is a global phenomenon that results in global warming, droughts, floodi... more Background Climate change is a global phenomenon that results in global warming, droughts, flooding and depletion of natural resources (Adger et al. 2003; Parry et al. 2004; Naqvi and Sejian 2011). A study by Nelson et al. (2009) indicated that climate change is expected to bring about significant yield losses between 3 and 30 % and extinction of land plants and animal species between 15 and 37 % by 2050 unless remedial measures are taken into
Background: Increasing energy demands on farm households in Ethiopia have escalated challenges re... more Background: Increasing energy demands on farm households in Ethiopia have escalated challenges related to land degradation, indoor air quality, and rural economic development. Soil deterioration followed by reduced carbon sequestration compounds the adverse effects of environmental degradation and climate change. The Ethiopian government has disseminated thousands of bio-digesters across rural villages with the hope that introducing biodigesters to rural farm households would address all of these issues. However, there is scant information about how households make energy choices and consequently how the introduction of biogas energy will affect income and the environment in these rural agricultural communities. Therefore, this study aims to verify how biogas energy adopters make decisions about their energy consumption and how biogas energy use compares to traditional alternatives such as firewood, charcoal, and dried animal dung. Methods: Quantitative data were gathered using semi-structured questionnaires of 300 farmers in the Tigray region of Ethiopia, following the collection of qualitative data obtained via focus groups. Using descriptive analysis, we quantified weekly consumption of traditional energy sources and major reasons why households choose each energy source. We estimated a multivariate probit model and conducted correlation tests to verify the use of biogas energy as a substitute or complement for traditional energy sources. Results: Results show that a household's choice for biogas energy was statistically and positively correlated to both firewood and charcoal use. Despite biogas digester adoption in several households, the majority continue to depend upon traditional energy sources. This suggests that overall household energy consumption increases with the availability of biogas digesters. The study reveals that the size of cattle holding, working age, gender, access to electricity, access to credit services, and livestock mobility influence household energy choices. Conclusions: The study concludes that household biogas energy use remains below expectations, even though subsidies make the units affordable for small farmers. We assert that households are more likely to adopt technologies that facilitate cooking food, baking injera, and preparing coffee. Biogas utilization might improve if farmers have access to improved stoves and credit services. However, policy makers also need to consider the possibility that providing access to biogas digesters may actually increase the use of traditional fuel sources and have the reverse effect than that intended.
Uncertain climatic conditions, reduced access to grazing land and water, and reduced mobility aff... more Uncertain climatic conditions, reduced access to grazing land and water, and reduced mobility affect the sustainability of livestock systems in Ethiopia. As a result, pastoralists look to other sources of income, including crop production, to reduce their vulnerability to changes. There is disagreement about whether integrating crops into pastoralist systems will be a positive experience. Therefore, this study investigated the challenges and contributions of crop production from Borana agro-pastoralists in southern Ethiopia. A multistage sampling technique produced surveys from 60 households. The collected data showed that Borana agro-pastoralists were highly involved in crop cultivation as one promising alternative means of livelihood but participants held strongly to traditional mobile herding regimes. A majority of the respondents (68%) replied that crop cultivation increases availability of grain and feed sources (straw), thereby improving their food security and minimizing morbidity and mortality loss of animals during the dry season. However, most respondents indicated that livelihood activities were influenced by a number of internal and external factors, most importantly low rainfall, pests, and the lack of inputs and markets. The study concludes there is a greater need of agropastoralist participation in crop cultivation to enhance their livelihood.
ABSTRACT This paper analyzes Colorado Corn producers’ preferences over both private- and environm... more ABSTRACT This paper analyzes Colorado Corn producers’ preferences over both private- and environmental public-good production system attributes. Current production practices are characterized by intensive water and chemical use, resulting in non-point source pollution to water bodies as well as soil erosion problems. Data from a stated preference survey are employed to analyze key attributes of experimentally configured irrigation systems, proposed as alternatives to current practices. Panel mixed logit estimations find positive preferences for profit, risk reduction, and, importantly, systems with less environmental impact in terms of nitrate leaching and soil erosion. The results also find presence of significant preference heterogeneity and a complementary relationship between the two environmental attributes. Analysis of this kind can be used by policy makers to predict behavioral responses associated with introduction of new technologies, or to assess welfare implications of agricultural policy changes and stricter environmental regulations.
HMIC, an acronym for heterolithic microwave integrated circuits, is fundamentally a wafer level s... more HMIC, an acronym for heterolithic microwave integrated circuits, is fundamentally a wafer level substrate which combines low, RF loss tangent glass with micromachined silicon to produce three dimensional circuitry with the capability to make RF, DC, and thermal vias as the device input and output. Using this technology both active and passive RF devices have been produced which have demonstrated
Over half of lakes, reservoirs, and ponds in the United States are threatened or impaired, mostly... more Over half of lakes, reservoirs, and ponds in the United States are threatened or impaired, mostly by nutrients. One policy to improve water quality is water quality trading (WQT). While the concept is appealing, adoption of conservation practices in these programs has been anemic at best. Using a case study in the newly-formed WQT market in Jordan Lake, North Carolina, we propose that part of the problem is a large adoption premium (AP) for this program. AP is the amount that farmers require over and above direct adoption costs to participate. In this study, farmers were asked at in-person interviews about their willingness to accept (WTA) a payment to adopt a particular conservation practice (riparian buffers) in order to generate and sell credits. We compared farmers' WTA to their direct cost of participation, which allowed us to estimate an AP. On average, the AP more than doubles the cost of purchasing credits. The AP sums all of the known indirect costs already cited in the literature, and more, into a single value and is relatively simple to estimate. Knowing the AP would improve the ability of policy makers to accurately estimate what is needed to boost adoption rates in WQT programs and other conservation programs as well.
This research examines returns to cattle feeding operations that sort animals prior to marketing ... more This research examines returns to cattle feeding operations that sort animals prior to marketing using ultrasound technology. The returns to sorting are between $11 and $25 per head depending on the number of groups the pens into which cattle can be sorted. Sorting faces declining returns. These returns can also be viewed as the costs imposed by institutional constraints that limit co-mingling of cattle. Through sorting, cattle feeding operations are able to reduce meat quality discounts, increase meat quality premiums, increase beef carcass quality characteristics, more efficiently use feed resources, and increase profits.
The invasive tree Prosopis juliflora is known to cause negative impacts on invaded ranges. High P... more The invasive tree Prosopis juliflora is known to cause negative impacts on invaded ranges. High P. juliflora eradication costs have swayed developing countries to follow a new and less expensive approach known as control through utilization. However, the net benefits of this new approach have not been thoroughly evaluated. Our objective was to assess the economic feasibility of selected P. juliflora eradication and utilization approaches that are currently practiced in one of the severely affected developing countries, Ethiopia. The selected approaches include converting P. juliflora infested lands into irrigated farms (conversion), charcoal production, and seed flour production. We estimate the costs and revenues of the selected P.
This paper estimates the shadow price of CO2 from burning crop residue in the Chinese agricultura... more This paper estimates the shadow price of CO2 from burning crop residue in the Chinese agricultural sector and explores the policy implications for decision makers. Using a parametric translog directional distance function, we evaluate the technical efficiency and shadow prices of CO2 reduction for 7 major maize provinces in China from 1996-2013. Our results show that crop yield, cost of total inputs, and percentage of burnt crop residue account for 30%, 10% and 20% of the inefficiency, respectively. The shadow price of CO2 from burning crop residue is estimated to range from 0-1.368 yuan/ha (or US$210.5/t) with an average of 0.496yuan/kg (or US$76/t). Further analysis indicates that the average efficiency will increase by 9% if conservation practices are adopted by assuming 10% decrease in yield and 50% decrease in burnt crop residue under conservation practices compared to conventional practices. The shadow prices in these two cases imply that the whole society will benefit if the ...
Biosecurity implemented on the poultry farms in the United Arab Emirates (UAE), in the form of pr... more Biosecurity implemented on the poultry farms in the United Arab Emirates (UAE), in the form of preparedness against any possible outbreak of disease, is critical for farm survival, safety, and development. Little information on the status of biosecurity readiness for containing any outbreak of poultry disease is available. This study was conducted to evaluate the status of biosecurity on commercial poultry farms in the UAE. Four categories of biosecurity measures/actions: isolation, human and traffic flow, cleaning, and disinfection, and adoption of vaccination protocols were considered. All 37 licensed commercial poultry farms in the country were enrolled in the study’s survey. Cumulative Distribution Functions (CDFs) and Artificial Neural Network statistical (ANN) methods were used for ranking biosecurity on farms, including a breakdown for large and small farms, and to identify areas that require improvements. The ANN is used to correlate preparedness in the focus areas to the po...
as soon as possible after acceptance. Copyediting, typesetting, and review of the resulting proof... more as soon as possible after acceptance. Copyediting, typesetting, and review of the resulting proof will be undertaken on this manuscript before final publication of the Version of Record (VoR). Please note that during production and pre-press, errors may be discovered which could affect the content.
This paper explores the sustainable intensification possibilities facing smallholder farmers in E... more This paper explores the sustainable intensification possibilities facing smallholder farmers in Ethiopia. We examine the internal consistency of jointly achieving “sustainable” “intensification” by exploring the factors that lead to complementarity or tradeoffs in the outcomes. A cross-sectional survey of farms was examined in multiple regions of Ethiopia’s Highlands. The results show that some farmers can achieve both sustainability and intensification, while many do not, or cannot achieve both at the same time. We found that some actions have a common impact on both sustainability and intensification, while other factors only affect one outcome. Access to agricultural loans and farm mechanization significantly increases the likelihood of succeeding in sustainable intensification. Access to land will be critical for agricultural sustainability while access to farming information and technical services will drive agricultural intensification. Overall, opportunities to improve both s...
This study examines the trade-off between agricultural production and groundwater contamination p... more This study examines the trade-off between agricultural production and groundwater contamination potential for ten potential herbicide cancellations. Theoretical and empirical models are developed for estimating losses in consumer and producer benefits in the agricultural commodity market and changes in groundwater quality. Using com and soybean production in the southeastern Coastal Plain as a study area, the analysis concludes that (1) effects of herbicide cancellations on groundwater quality can be very significant; (2) a cancellation does not guarantee groundwater quality improvement; (3) effects of a multiple cancellation are different from the summation of the effects of independent cancellations; and (4) weed density has a very strong effect on losses to farmers and consumers from cancellations, but output demand and supply elasticities do not.
Budget Planner is a whole-farm or enterprise budgeting software program that is simple to use for... more Budget Planner is a whole-farm or enterprise budgeting software program that is simple to use for farmers, extension agents, and other budgeters who are sometimes inexperienced, but that also provides the detail necessary to be accurate. Program defaults eliminate repetitive questions that change little from budget to budget. Defaults can be temporarily overridden, or they can be permanently changed with a detailed modify program. The program leads a user through a sequence similar to that a producer might utilize. Input forms were created to enlarge the user clientele and eventually increase computer use by farmers and extension agents.
Increasing frequency of drought and high herbivore pressure significantly affect individual grass... more Increasing frequency of drought and high herbivore pressure significantly affect individual grass functions in semiarid regions. Reseeding of degraded rangelands by native grass species has been recommended as a tool for restoration semiarid rangelands. However, how grass species used for reseeding respond to stressors has not been fully explored. We examined biomass allocation and nutrient contents of Cenchrus ciliaris and Chloris gayana in the semiarid Borana rangelands, Ethiopia. We tested clipped mature tufts of the same species for biomass allocation and nutritive values. Further, shifts in rainfall and herbivory were simulated by three irrigation and four clipping treatments, respectively, for newly established grasses in pot and field plot experiments. Aboveground biomass (AG B) significantly declined by up to 75% under increased clipping in mature tufts. In contrast, clipping significantly stimulated up to 152% higher AG B of newly established grasses. Lower irrigation reduced the AG B by 24 and 42% in C. ciliaris and in C. gayana, respectively. Clipping, further, significantly enhanced grass nutrients in grass tufts by up to 82 and 105% in C. ciliaris and C. gayana, respectively. Hence, management should focus on balancing this trade-off in mature grasses for nutritious rangeland production by clipping and storing for later supplemental feeding when grass nutrients drop. Further, young pastures should be moderately clipped/grazed for better establishment and biomass allocation. Additionally, our experiments established the first interactive effect of clipping and irrigation frequencies on the biomass allocation of native grasses in the semiarid Borana rangelands, Ethiopia. Knowledge of these interacting factors is deemed essential for policy makers to enhance productivity of degraded rangelands such as the Borana rangelands.
Background Climate change is a global phenomenon that results in global warming, droughts, floodi... more Background Climate change is a global phenomenon that results in global warming, droughts, flooding and depletion of natural resources (Adger et al. 2003; Parry et al. 2004; Naqvi and Sejian 2011). A study by Nelson et al. (2009) indicated that climate change is expected to bring about significant yield losses between 3 and 30 % and extinction of land plants and animal species between 15 and 37 % by 2050 unless remedial measures are taken into
Background: Increasing energy demands on farm households in Ethiopia have escalated challenges re... more Background: Increasing energy demands on farm households in Ethiopia have escalated challenges related to land degradation, indoor air quality, and rural economic development. Soil deterioration followed by reduced carbon sequestration compounds the adverse effects of environmental degradation and climate change. The Ethiopian government has disseminated thousands of bio-digesters across rural villages with the hope that introducing biodigesters to rural farm households would address all of these issues. However, there is scant information about how households make energy choices and consequently how the introduction of biogas energy will affect income and the environment in these rural agricultural communities. Therefore, this study aims to verify how biogas energy adopters make decisions about their energy consumption and how biogas energy use compares to traditional alternatives such as firewood, charcoal, and dried animal dung. Methods: Quantitative data were gathered using semi-structured questionnaires of 300 farmers in the Tigray region of Ethiopia, following the collection of qualitative data obtained via focus groups. Using descriptive analysis, we quantified weekly consumption of traditional energy sources and major reasons why households choose each energy source. We estimated a multivariate probit model and conducted correlation tests to verify the use of biogas energy as a substitute or complement for traditional energy sources. Results: Results show that a household's choice for biogas energy was statistically and positively correlated to both firewood and charcoal use. Despite biogas digester adoption in several households, the majority continue to depend upon traditional energy sources. This suggests that overall household energy consumption increases with the availability of biogas digesters. The study reveals that the size of cattle holding, working age, gender, access to electricity, access to credit services, and livestock mobility influence household energy choices. Conclusions: The study concludes that household biogas energy use remains below expectations, even though subsidies make the units affordable for small farmers. We assert that households are more likely to adopt technologies that facilitate cooking food, baking injera, and preparing coffee. Biogas utilization might improve if farmers have access to improved stoves and credit services. However, policy makers also need to consider the possibility that providing access to biogas digesters may actually increase the use of traditional fuel sources and have the reverse effect than that intended.
Uncertain climatic conditions, reduced access to grazing land and water, and reduced mobility aff... more Uncertain climatic conditions, reduced access to grazing land and water, and reduced mobility affect the sustainability of livestock systems in Ethiopia. As a result, pastoralists look to other sources of income, including crop production, to reduce their vulnerability to changes. There is disagreement about whether integrating crops into pastoralist systems will be a positive experience. Therefore, this study investigated the challenges and contributions of crop production from Borana agro-pastoralists in southern Ethiopia. A multistage sampling technique produced surveys from 60 households. The collected data showed that Borana agro-pastoralists were highly involved in crop cultivation as one promising alternative means of livelihood but participants held strongly to traditional mobile herding regimes. A majority of the respondents (68%) replied that crop cultivation increases availability of grain and feed sources (straw), thereby improving their food security and minimizing morbidity and mortality loss of animals during the dry season. However, most respondents indicated that livelihood activities were influenced by a number of internal and external factors, most importantly low rainfall, pests, and the lack of inputs and markets. The study concludes there is a greater need of agropastoralist participation in crop cultivation to enhance their livelihood.
ABSTRACT This paper analyzes Colorado Corn producers’ preferences over both private- and environm... more ABSTRACT This paper analyzes Colorado Corn producers’ preferences over both private- and environmental public-good production system attributes. Current production practices are characterized by intensive water and chemical use, resulting in non-point source pollution to water bodies as well as soil erosion problems. Data from a stated preference survey are employed to analyze key attributes of experimentally configured irrigation systems, proposed as alternatives to current practices. Panel mixed logit estimations find positive preferences for profit, risk reduction, and, importantly, systems with less environmental impact in terms of nitrate leaching and soil erosion. The results also find presence of significant preference heterogeneity and a complementary relationship between the two environmental attributes. Analysis of this kind can be used by policy makers to predict behavioral responses associated with introduction of new technologies, or to assess welfare implications of agricultural policy changes and stricter environmental regulations.
HMIC, an acronym for heterolithic microwave integrated circuits, is fundamentally a wafer level s... more HMIC, an acronym for heterolithic microwave integrated circuits, is fundamentally a wafer level substrate which combines low, RF loss tangent glass with micromachined silicon to produce three dimensional circuitry with the capability to make RF, DC, and thermal vias as the device input and output. Using this technology both active and passive RF devices have been produced which have demonstrated
Over half of lakes, reservoirs, and ponds in the United States are threatened or impaired, mostly... more Over half of lakes, reservoirs, and ponds in the United States are threatened or impaired, mostly by nutrients. One policy to improve water quality is water quality trading (WQT). While the concept is appealing, adoption of conservation practices in these programs has been anemic at best. Using a case study in the newly-formed WQT market in Jordan Lake, North Carolina, we propose that part of the problem is a large adoption premium (AP) for this program. AP is the amount that farmers require over and above direct adoption costs to participate. In this study, farmers were asked at in-person interviews about their willingness to accept (WTA) a payment to adopt a particular conservation practice (riparian buffers) in order to generate and sell credits. We compared farmers' WTA to their direct cost of participation, which allowed us to estimate an AP. On average, the AP more than doubles the cost of purchasing credits. The AP sums all of the known indirect costs already cited in the literature, and more, into a single value and is relatively simple to estimate. Knowing the AP would improve the ability of policy makers to accurately estimate what is needed to boost adoption rates in WQT programs and other conservation programs as well.
This research examines returns to cattle feeding operations that sort animals prior to marketing ... more This research examines returns to cattle feeding operations that sort animals prior to marketing using ultrasound technology. The returns to sorting are between $11 and $25 per head depending on the number of groups the pens into which cattle can be sorted. Sorting faces declining returns. These returns can also be viewed as the costs imposed by institutional constraints that limit co-mingling of cattle. Through sorting, cattle feeding operations are able to reduce meat quality discounts, increase meat quality premiums, increase beef carcass quality characteristics, more efficiently use feed resources, and increase profits.
The invasive tree Prosopis juliflora is known to cause negative impacts on invaded ranges. High P... more The invasive tree Prosopis juliflora is known to cause negative impacts on invaded ranges. High P. juliflora eradication costs have swayed developing countries to follow a new and less expensive approach known as control through utilization. However, the net benefits of this new approach have not been thoroughly evaluated. Our objective was to assess the economic feasibility of selected P. juliflora eradication and utilization approaches that are currently practiced in one of the severely affected developing countries, Ethiopia. The selected approaches include converting P. juliflora infested lands into irrigated farms (conversion), charcoal production, and seed flour production. We estimate the costs and revenues of the selected P.
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