Wallace Tyner

Wallace Tyner
Purdue University | Purdue · Department of Agricultural Economics

University of Maryland PHD

About

257
Publications
43,116
Reads
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5,345
Citations
Citations since 2017
32 Research Items
2326 Citations
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Additional affiliations
January 2007 - December 2012
Purdue University

Publications

Publications (257)
Article
Full-text available
Climate change can negatively affect crop productivity decreasing food production in many regions across the world. Literature suggests forest carbon sequestration (FCS) is a good alternative to mitigate climate change due to its ability to sequester carbon at low cost. Nevertheless, FCS subsidies have not been addressed together with impacts on fo...
Technical Report
Full-text available
In the last two years, the United States has reversed the post-World War II trend toward the lowering of trade barriers and a commitment towards multilateral free trade. Citing a need to “level the playing field” and hold trading partners accountable to their commitments, the current Administration has moved towards a more protectionist and perhaps...
Article
Full-text available
Sound economic modelling of land use in global economic models is critical for evaluating agricultural, biofuel, and climate policies. Current approaches do not preserve physical land area, do not account for the fact that land is of different qualities, or do not explicitly include the cost of converting land from one use to another. This study pr...
Article
Full-text available
A hallmark of the Trump Administration has been to reverse the post-World War II consensus on lowering of trade barriers and a commitment towards multilateral free trade, towards a more protectionist and perhaps mercantilist position vis-à-vis trade policy. One of the Administration’s first actions in this regard was the decision to leave the Trans...
Article
Prior design optimization efforts do not capture the impact of battery degradation and replacement on the total cost of ownership, even though the battery is the most expensive and least robust powertrain component. A novel, comprehensive framework is presented for model-based parametric optimization of hybrid electric vehicle powertrains, while ac...
Preprint
Full-text available
The constant elasticity of transformation (CET) functional form has been a workhorse for modelling land transformation in applied general equilibrium studies. While parsimonious, the standard CET approach can neither provide traceable physical land use results nor explicitly account for land conversion cost. The investigation in this study showed t...
Article
Full-text available
The extent to which agricultural trade liberalisation can be an adaptation strategy in the face of climate change remains to be an open discussion in the literature. We set out to answer this question in the context of Morocco and Turkey by taking into account the impact of climate change on agricultural international markets at the global level. W...
Article
This study conducted the updated simulations to depict a life cycle analysis (LCA) of the biodiesel production from soybeans and other feedstocks in the U.S. It addressed in details the interaction between LCA and induced land use change (ILUC) for biodiesel. Relative to the conventional petroleum diesel, soy biodiesel could achieve 76% reduction i...
Article
Full-text available
Precision agriculture technologies allow producers to identify areas of fields that are underperforming and unprofitable. If these less productive parts of the field could be converted to a bioenergy crop through subfield management strategies (landscape design), there may be potential gains to farmer revenue, biomass availability, and reduced adve...
Article
Energy economics is a vast topic. Many applied and agricultural economists today work on fuel economy, fossil fuel energy issues, energy sector economic analysis, electricity sector economic and policy issues, techno-economic analyses of energy alternatives as well as agricultural energy issues such as biofuels, and energy use in agriculture. Energ...
Article
This study analyzed the financial feasibility of catalytic hydrothermolysis (CH) aviation biofuel technology. Three feedstocks were assessed: brown grease (rendered from grease trap waste), yellow grease (rendered from used cooking oil), and carinata oil. Since the technology carries risk, a stochastic analysis was conducted, which resulted in a di...
Article
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Livestock production systems have faced social pressures related to animal welfare; the laying hen industry also has faced changes in governing regulations/policies. This study employs experimental data to evaluate 3 confinement-housing systems: standard cages with no perches, cages with standard perches, and cages with cooled perches. Based on the...
Article
Cover crops have recently been generating a lot of interest in agriculture for their agronomic benefits, including erosion control, nutrient restoration, and increased cash crop yield. However, the value of these benefits is not well established and likely highly variable. The factors that influence a farmer’s decision to adopt or not adopt cover c...
Article
Full-text available
This paper provides estimates of the economic impacts of climate change and estimates the adaptation potential of the current Moroccan agricultural development and investment strategy, the Moroccan Green Plan (MGP). We develop a regionalised Morocco Computable General Equilibrium model to analyse the linkages of climate-induced productivity losses...
Book
Full-text available
Although bioenergy is a renewable energy source, it is not without impact on the environment. Both the cultivation of crops specifically for use as biofuels and the use of agricultural byproducts to generate energy changes the landscape, affects ecosystems, and impacts the climate. Bioenergy and Land Use Change focuses on regional and global assess...
Chapter
In recent years many studies used economic partial and general equilibrium models to estimate induced land use change (ILUC) emissions due to biofuel production and/or policy. Previous research assumed that all additional harvested crop area came from cultivation of land converted from pasture or forest. However, recent FAO data suggest that there...
Article
Full-text available
This study assesses the potential economic and environmental impacts that would arise if restrictions on glyphosate use resulted in the world no longer planting genetically modified herbicide tolerant (GM HT) crops. ‘First round’ impacts are the loss of farm level and aggregate impacts associated with the widespread use of GM HT crops (tolerant to...
Article
With the non-advanced portion of the US Renewable Fuel Standard having been largely met by corn ethanol, many states are looking to cellulosic crops as the next source of biofuels. In Indiana, attention is turning to biojet fuels and renewable diesel as forming the demand for these crops. This paper seeks to determine the optimal manufacturing site...
Article
The light-duty vehicle market has seen some adoption of hybrid electric vehicles that is not reflected in the heavy-duty market. The major challenges associated with the heavy-duty segment are: (i) greater emphasis on economic viability, (ii) reluctance to take on risk associated with new technologies, and (iii) numerous diverse applications that p...
Article
Full-text available
Background The GTAP model has been used to estimate biofuel policy induced land use changes and consequent GHG emissions for more than a decade. This paper reviews the history of the model and database modifications and improvements that have occurred over that period. In particular, the paper covers in greater detail the move from the 2004 to the...
Chapter
The purpose of this chapter is to ask and answer the question of what would happen if Genetically Modified Organism (GMO) plant materials were banned. We report on two studies – one with United States only ban and one with a global ban. We used a global computable general equilibrium (CGE) model, Global Trade Analysis Project (GTAP), for the analys...
Article
Full-text available
Given the potential for genetic modification (GM) to impact human health, via food and health mechanisms, a greater understanding of the social acceptance of GM is necessary to facilitate improved health outcomes. This analysis sought to quantify U.S. residents’ acceptance of GM across five potential uses (grain production, fruit or vegetable produ...
Data
Word document survey instrument. (DOCX)
Conference Paper
Full-text available
The constant elasticity of transformation (CET) functional form has been widely used in CGE models for handling land heterogeneity. However, the CET approach cannot provide traceable land use change results since land productivity changes due to land transformation are implicitly adjusted by shifting effective land supply so that results are “effec...
Article
Full-text available
Tourists consider many factors, including health, when choosing travel destinations. The potential for exposure to novel or foreign diseases alone can deter travelers from selecting high-risk locations for disease transmission. The 2015–2016 Zika Virus (ZIKV) outbreak in the Americas and Caribbean prompted the World Health Organization (WHO) to dec...
Article
Corn stover treated with a lime slurry has the potential to reduce feed costs for finishing feedlot cattle. Feed rations including lime-treated corn stover were profitable compared with the control rations for all scenarios investigated. The average annual increase in returns per feedlot space on a beef cattle feedlot operation when lime-treated co...
Article
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Background Alcohol-to-jet (ATJ) is one of the technical feasible biofuel technologies. It produces jet fuel from sugary, starchy, and lignocellulosic biomass, such as sugarcane, corn grain, and switchgrass, via fermentation of sugars to ethanol or other alcohols. This study assesses the ATJ biofuel production pathway for these three biomass feedsto...
Article
Techno-economic analysis (TEA) is a well-established modeling process for evaluating the economic feasibility of emerging technologies. Most previous TEA studies focused on creating reliable cost estimates but returned deterministic net present values (NPV) and deterministic breakeven prices which cannot convey the considerable uncertainties embedd...
Article
This study quantifies and compares the costs of production for six alternative jet fuel pathways using consistent financial and technical assumptions. Uncertainty was propagated through the analysis using Monte Carlo simulations. The six processes assessed were HEFA, advanced fermentation, Fischer-Tropsch, aqueous phase processing, hydrothermal liq...
Article
This study models fundamental features of current and prospective policies encouraging adoption of residential photovoltaic (PV) systems. A key finding is that time-of-day (ToD) pricing can enhance or worsen the economics of PV systems. Moreover, increased responsiveness of electricity demand to its price diminishes the effectiveness of ToD pricing...
Article
Full-text available
With the recent shale gas boom, the U.S. is expected to have very large natural gas resources. In this respect, the key question is would it be better to rely completely on free market resource allocations which would lead to large exports of natural gas or to limit natural gas exports so that more could be used in the U.S.. After accounting for th...
Article
Development of a productive advanced biofuels economy will require a suite of lignocellulosic feedstocks, including both agricultural residues and dedicated energy crops. This research utilizes precision conservation and multicriteria decision analysis (MCDA) techniques to model the integration of switchgrass (Panicum virgatum L.), a perennial bioe...
Article
Wind energy is an emerging source for renewable energy. This article presents an application of the economic input–output life cycle assessment (EIO-LCA) to estimate the greenhouse gas (GHG) emissions through the life cycle of wind energy farms in a state. The EIO-LCA incorporates manufacturing, installation, operation and maintenance, and decommis...
Article
Full-text available
The objective of this research is to assess the global economic and greenhouse gas emission impacts of banning GMO crops. This is done by modeling two counterfac-tual scenarios and evaluating them apart and in combination using a well-know Computable General Equilibrium (CGE) model, GTAP-BIO. The first scenario models the impact of a global GMO ban...
Article
The main objective of this study was to evaluate potential economic and environmental consequences of losing GMO traits in the United States for the major crops of corn, soybeans, and cotton. The first step was to obtain from the literature a range of estimates of the yield losses if we move away from GMO traits in the United States. The second ste...
Chapter
Biofuels are currently in a state of flux. The main operative policy for biofuels in the United States is the Renewable Fuel Standard (RFS). It specifies a minimum quantity of four different types of biofuels that must be blended each year in the United States through 2022. However, the United States also faces what is called the blend wall, which...
Article
Full-text available
The optimal design of hybrid electric vehicle powertrains from a systems perspective is critical to realize the maximum benefits of hybridization for a given application, especially in the heavy-duty vehicle space due to the large number of unique applications. This paper proposes a novel framework that enables parametric design optimization of hyb...
Article
Full-text available
What would be the impacts of a viable market for corn stover? A partial equilibrium model and a linear programing model were used to determine to what extent the existence of a viable market for corn stover would affect the traditional corn-soybean crop rotation in the US. We find that with government support production of biofuel from corn stover...
Article
What are second-generation (2G) biofuel technologies worth to global society? A dynamic, economic model is used to assess the impact that introducing 2G biofuels technology has on crops, livestock, biofuels, forestry, and environmental services, as well as greenhouse gas emissions. Under baseline conditions, this amounts to $64 billion and is $84 b...
Article
Existing economic analysis of corn stover as an energy feedstock has not considered potential changes in land use associated with different stover prices. We estimate the response of corn stover supply density to its price driven by changes in land use and examine its implications for a processing plant's pricing strategy and marginal cost, as well...
Article
Full-text available
This study evaluates the economic feasibility and stochastic dominance rank of eight cellulosic biofuel production pathways (including gasification, pyrolysis, liquefaction, and fermentation) under technological and economic uncertainty. A techno-economic assessment based financial analysis is employed to derive net present values and breakeven pri...
Article
Full-text available
We evaluate how different contract designs impact risk sharing along the supply chain for the dedicated energy crop miscanthus. We model the full production and transportation system of the miscanthus supply chain because a sustainable supply chain must procure biomass in a cost-effective manner. Using this model, we estimate the financial returns...
Article
Increasingly stringent fuel economy and emissions regulations alongside efforts to reduce oil dependence have accelerated the global deployment of advanced vehicle technologies. In recent years, original equipment manufacturers (OEMs) and consumers have generally been successful in mutually deploying cleaner vehicle options with little sacrifice in...
Article
Aviation biofuels can help to reduce greenhouse gas (GHG) emissions in the United States, help to meet the Renewable Fuel Standard for cellulosic biofuels, and improve US energy security. Cellulosic biofuels carry a lot of risk, because conversion technology is expensive. As a result, incentives are needed to reduce the risk for private investors....
Article
The primary objectives of recent energy initiatives have been: (1) lowering greenhouse gas (GHG) emissions; and (2) increasing US energy security by reducing oil imports for the purposes of making the US less vulnerable to the actions of other countries. The concern is that relying on sometimes adversarial, sometimes unstable countries for a quarte...
Article
While shale oil and gas are controversial in some quarters due to perceived environmental risks, there is little doubt that the shale oil and gas boom is having a major positive impact on the US economy. But how large is it? We use a global general equilibrium economic model to estimate the economic impacts of the shale oil and gas technology on th...
Article
In recent years, the energy market in the US and globally is expanding the production of renewable energy. Solar energy for electricity is also expanding in the US. Indiana is one of the states expanding solar energy with solar photovoltaic (PV) systems. Therefore, we conduct benefit cost analysis with several uncertain input variables to determine...
Chapter
Second generation or cellulosic biofuels have potential to become a reliable source of renewable fuel. In this chapter we describe five major uncertainties that currently inhibit the development of these biofuels: (1) future oil prices, (2) feedstock availability and cost, (3) conversion technology efficiency and cost, (4) environmental impacts, an...
Article
Renewable energy is an option for many countries simultaneously seeking to reduce dependence on imported petroleum and to reduce greenhouse gas (GHG) emissions that contribute to climate change. Forestry can play a role in environmental policies, such as renewable portfolio standards for bioelectricity, renewable fuel standards for biofuels, and fo...
Article
The potential harvest of corn stover as a feedstock for biofuels to meet government mandates has raised concerns about the agronomic impacts of its removal from fields. Furthermore, in order to meet these mandates, larger quantities of stover will be required. As a result, increased attention has been placed on sustainable agronomic practices, such...
Article
Full-text available
This research asks and answers a question that had been avoided by all the previous research on biofuels impacts. That is, to what extent are the US and EU biofuels sustainability criteria binding in the sense that if applied, sufficient land would be available to implement the programs? In answering the question, we simulate the global land by agr...
Article
“The results obtained from these simulations indicate that extracting corn oil reduces the induced land use emissions due to total biofuel production…. The bottom line is that more biofuel is produced from the same or fewer land resources, so total system land use emissions fall.”
Conference Paper
Full-text available
The European Union (EU) has emerged as a major producer and consumer of biodiesel, due to policy initiatives. Recent policies seek to curb imports from USA, Argentina and Indonesia by imposing anti-dumping duties. Further, there has been a proposal to set a cap on First Generation Biofuels (FGBs) to reduce greenhouse gas (GHG) emissions from Land U...
Article
The use of small-scale solar electric generation in the U.S. has been steadily rising in the more recent years. Solar photovoltaic (PV) cell micro-generation has been used extensively for residential applications - especially in the state of California. Systems can be purchased by a homeowner or leased through a licensed distributor. Leasing has be...
Article
Full-text available
Alterations in rainfall patterns and increasing temperatures due to climate change will most likely translate into yield reductions in desirable crops. In this particular context, the object of this paper is to lay down findings and results for projected yield impacts in Morocco using a well-tested crop model, CliCrop, which estimates yield impa...
Article
Existing assessments of biomass supply and demand and their impacts face various types of limitations and uncertainties, partly due to the type of tools and methods applied (e.g., partial representation of sectors, lack of geographical details, and aggregated representation of technologies involved). Improved collaboration between existing modeling...
Article
Full-text available
The paper provides estimates of economic impacts of climate change, compares these with historical impacts of drought spells, and estimates the extent to which the current Moroccan agricultural development and investment strategy, the Plan Maroc Vert, helps in agricultural adaptation to climate change and uncertainty. We develop a regionalized M...
Article
Full-text available
Conventional fossil fuels dominate the marketplace, and their prices are a direct competitor for drop-in biofuels. This paper examines the impact of fuel selling price uncertainty on investment risk in a fast pyrolysis derived biofuel production facility. Production cost specifications are gathered from previous research. Monte Carlo analysis is em...
Article
Full-text available
Domestic natural gas production has increased markedly in the United States, and now compressed natural gas (CNG) has the potential to become a cleaner and less expensive energy source than diesel fuel for use in the public transportation sector, especially for city bus fleets. This paper provides an economic analysis of possible CNG conversion for...
Article
This study addresses the possible impacts of energy and climate policies, namely corporate average fleet efficiency (CAFE) standard, renewable fuel standard (RFS) and clean energy standard (CES), and an economy wide equivalent carbon tax on GHG emissions in the US to the year 2045. Bottom-up and top-down modeling approaches find widespread use in e...
Article
Biofuels are produced from agricultural commodities, so they represent a competing demand for those commodities. Therefore, it is clear that biofuels have some impact on agricultural commodity prices, so the food–fuel debate surrounds the relative contribution of biofuels to agricultural commodity price increases compared with other drivers. In thi...
Article
This paper surveys the evidence on market-mediated environmental impacts of biofuels, with special attention to the indirect greenhouse gas emissions stemming from land cover change in the wake of increased demand for biofuel feedstocks. We find clear evidence that market mediated land use response to crop price changes has occurred over the past d...
Poster
Full-text available
Develop and demonstrate an integrated framework to estimate the economic cost and GHG emissions of cellulosic biofuels