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Full-Text Articles in Engineering
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
William Edwards
Four case studies were developed for Iowa farm operations that have successfully used machinery and labor sharing arrangements for intergenerational transfer of farm assets. Results were shared at workshops and through publication of a resource manual.
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
William Edwards
Includes advantages and disadvantages of custom hiring and information on estimating costs; includes worksheets.
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
William Edwards
Four case studies were developed for Iowa farm operations that have successfully used machinery and labor sharing arrangements for intergenerational transfer of farm assets. Results were shared at workshops and through publication of a resource manual.
Combine Harvester Econometric Model With Forward Speed Optimization, Nathan E. Isaac, Graeme R. Quick, Stuart J. Birrell, William M. Edwards, Bruce A. Coers
Combine Harvester Econometric Model With Forward Speed Optimization, Nathan E. Isaac, Graeme R. Quick, Stuart J. Birrell, William M. Edwards, Bruce A. Coers
William Edwards
A combine harvester econometric simulation model was developed with the goal of matching the combine forward speed to the maximum harvested net income per acre. The model considers the machinery management costs of owning a combine and platform header for harvesting wheat. A statistical Design of Experiment (DOE) was used to evaluate the model using tri-level variables; the medium values constituted the model base case. Of the 27 input variables, the optimum speed was significantly influenced by the crop area, G/MOG ratio, grain unit price, field yield, field efficiency, grain moisture content, probability of a working day in the post-optimum …
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
William Edwards
Four case studies were developed for Iowa farm operations that have successfully used machinery and labor sharing arrangements for intergenerational transfer of farm assets. Results were shared at workshops and through publication of a resource manual.
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
William Edwards
Includes advantages and disadvantages of custom hiring and information on estimating costs; includes worksheets.
Combine Harvester Econometric Model With Forward Speed Optimization, Nathan E. Isaac, Graeme R. Quick, Stuart J. Birrell, William M. Edwards, Bruce A. Coers
Combine Harvester Econometric Model With Forward Speed Optimization, Nathan E. Isaac, Graeme R. Quick, Stuart J. Birrell, William M. Edwards, Bruce A. Coers
William Edwards
A combine harvester econometric simulation model was developed with the goal of matching the combine forward speed to the maximum harvested net income per acre. The model considers the machinery management costs of owning a combine and platform header for harvesting wheat. A statistical Design of Experiment (DOE) was used to evaluate the model using tri-level variables; the medium values constituted the model base case. Of the 27 input variables, the optimum speed was significantly influenced by the crop area, G/MOG ratio, grain unit price, field yield, field efficiency, grain moisture content, probability of a working day in the post-optimum …
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
William Edwards
Includes advantages and disadvantages of custom hiring and information on estimating costs; includes worksheets.
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
William Edwards
Four case studies were developed for Iowa farm operations that have successfully used machinery and labor sharing arrangements for intergenerational transfer of farm assets. Results were shared at workshops and through publication of a resource manual.
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
William Edwards
Four case studies were developed for Iowa farm operations that have successfully used machinery and labor sharing arrangements for intergenerational transfer of farm assets. Results were shared at workshops and through publication of a resource manual.
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
Producer Machinery And Labor Sharing Arrangements Workshops, Roger Ginder, William M. Edwards, Georgeanne M. Artz, Darren H. Jarboe
William Edwards
Four case studies were developed for Iowa farm operations that have successfully used machinery and labor sharing arrangements for intergenerational transfer of farm assets. Results were shared at workshops and through publication of a resource manual.
Combine Harvester Econometric Model With Forward Speed Optimization, Nathan E. Isaac, Graeme R. Quick, Stuart J. Birrell, William M. Edwards, Bruce A. Coers
Combine Harvester Econometric Model With Forward Speed Optimization, Nathan E. Isaac, Graeme R. Quick, Stuart J. Birrell, William M. Edwards, Bruce A. Coers
William Edwards
A combine harvester econometric simulation model was developed with the goal of matching the combine forward speed to the maximum harvested net income per acre. The model considers the machinery management costs of owning a combine and platform header for harvesting wheat. A statistical Design of Experiment (DOE) was used to evaluate the model using tri-level variables; the medium values constituted the model base case. Of the 27 input variables, the optimum speed was significantly influenced by the crop area, G/MOG ratio, grain unit price, field yield, field efficiency, grain moisture content, probability of a working day in the post-optimum …
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
Ag Decision Maker: Combine Ownership Or Custom Hire, William M. Edwards, H. Mark Hanna
William Edwards
Includes advantages and disadvantages of custom hiring and information on estimating costs; includes worksheets.
Pumpage Reduction By Using Variable Rate Irrigation To Mine Undepleted Soil Water, Tsz Him Lo, Derek M. Heeren, Derrel Martin, Luciano Mateos, Joe D. Luck, Dean E. Eisenhauer
Pumpage Reduction By Using Variable Rate Irrigation To Mine Undepleted Soil Water, Tsz Him Lo, Derek M. Heeren, Derrel Martin, Luciano Mateos, Joe D. Luck, Dean E. Eisenhauer
Biological Systems Engineering: Papers and Publications
Conventional irrigation schedules are typically based on portions of the field where root zones hold the least available soil water. This leaves undepleted available water in areas with larger water holding capacities. The undepleted water could be used through variable-rate irrigation (VRI) management; however, the benefits of VRI without in-field mapping are unexamined. In this research, the field-averaged amount of undepleted available soil water in the root zone was calculated from the NRCS Soil Survey Geographic database for 49,224 center-pivot irrigated fields in Nebraska. Potential reductions in pumpage from mining undepleted available water were then estimated. Results of the analysis …
Nông Thôn Mới And Rural Development In The Mekong Delta: A Comparative Study Of Bàu Môn And Hòa Phụng C Hamlets, Alex Lintz
Independent Study Project (ISP) Collection
Vietnam’s Nông Thôn Mới or New Rural Development program is a relatively new target program introduced in 2010. As of yet there has been little research done on its effects on the economies in rural areas. This paper attempts to analyze the economic situation in the Bàu Môn and Hòa Phụng C hamlets with a particular emphasis placed on income and factors that affect income in terms of Vietnam’s Nông Thôn Mới or New Rural Development program. In order to assess the economic situation in the hamlets, a survey was administered to 25 participants in each hamlet and leaders from …
Affluent Populations And Their Effect On Biological Diversity Through The Consumption Of Meat, Electronics, And Motor Vehicles, Melody Flores
Affluent Populations And Their Effect On Biological Diversity Through The Consumption Of Meat, Electronics, And Motor Vehicles, Melody Flores
Honors College Theses
The human has caused a far greater impact on the planet's biodiversity than any other species in existence, due to the impact of population, afflluence, and technology. This thesis will argue the importance of biological diversity and how affluent populations are reducing biodiversity through the consumption of meat, electronics, and motor vehicles. Aldo Leopold's "The Land Ethic" and Herman Daly's "The Impossibility Theorem", among others, create a rubric evaluating human activities and provide alternative views on economic impossibilities. Consumption is reviewed from an ecocentric perspective, a holistic outlook placing emphasis on the ecosystem. The reader will become cognizant of their …
Implementing Green Roofs On Movie Theaters And Shopping Centers: Business Cases In Profitable Sustainability, Ryan J. Miller
Implementing Green Roofs On Movie Theaters And Shopping Centers: Business Cases In Profitable Sustainability, Ryan J. Miller
Pomona Senior Theses
This thesis presents the business case for installing green roofs on movie theaters and shopping centers. These businesses can then derive increased profits from the environmental benefits of reduced energy use and increased stormwater retention. After presenting the basic design and benefits of a green roof, the thesis develops stand-alone business plans for a movie theater and shopping center. The author finds that green roofs are a profitable sustainability solution for the commercial enterprise.
Optimization And Economic Evaluation Of Industrial Gas Production And Combined Heat And Power Generation From Gasification Of Corn Stover And Distillers Grains, Ajay Kumar, Yaşar Demirel, David D. Jones, Milford Hanna
Optimization And Economic Evaluation Of Industrial Gas Production And Combined Heat And Power Generation From Gasification Of Corn Stover And Distillers Grains, Ajay Kumar, Yaşar Demirel, David D. Jones, Milford Hanna
Biological Systems Engineering: Papers and Publications
Thermochemical gasification is one of the most promising technologies for converting biomass into power, fuels and chemicals. The objectives of this study were to maximize the net energy efficiency for biomass gasification, and to estimate the cost of producing industrial gas and combined heat and power (CHP) at a feedrate of 2,000 kg/h. Aspen Plusbased model for gasification was combined with a CHP generation model, and optimized using corn stover and dried distillers grains with solubles (DDGS) as the biomass feedstocks. The cold gas efficiencies for gas production were 57% and 52%, respectively, for corn stover and DDGS. The selling …
Reducing The Cost Of Pumping Irrigation Water, Derrel L. Martin, William L. Kranz, Tom W. Dorn, Steve R. Melvin, Alan J. Corr
Reducing The Cost Of Pumping Irrigation Water, Derrel L. Martin, William L. Kranz, Tom W. Dorn, Steve R. Melvin, Alan J. Corr
Department of Biological Systems Engineering: Conference Presentations and White Papers
Irrigation accounts for a large portion of the energy used in Nebraska agriculture. The cost to pump irrigation water depends on the type of energy used to power the pumping unit. This document describes a method to estimate the cost of pumping water and to compare the amount of energy used to that for a well maintained and designed pumping plant. The results can help determine the feasibility of repairing the pumping plant.
Updating The Nebraska Pumping Plant Performance Criteria, William Kranz, Derrel L. Martin, Dean Patterson, Jerry Hudgins, Simon Van Donk, C. Dean Yonts
Updating The Nebraska Pumping Plant Performance Criteria, William Kranz, Derrel L. Martin, Dean Patterson, Jerry Hudgins, Simon Van Donk, C. Dean Yonts
Department of Biological Systems Engineering: Conference Presentations and White Papers
Irrigation water is removed from groundwater storage using deep well turbine pumps powered by electric motors or diesel, gasoline, propane, ethanol, or natural gas internal combustion engines. For best operating efficiency irrigation power units are selected to specifically meet the requirements of the irrigation system that include how deep the water in the well is under pumping conditions, the water pressure required at the pump outlet, and the system flow rate. The evaluation of pumping plants to establish pumping plant performance dates back into the 1950’s when researchers at the University of Nebraska were unable to directly compare the operation …
Liquid Dairy Waste Transport And Land Application Cost Comparisons Considering Herd Size, Transport Distance, And Nitrogen Versus Phosphorus Application Rates, Robert T. Burns, A. S. Daugherty, T. L. Cross, D. Raj Raman, G. F. Grandle
Liquid Dairy Waste Transport And Land Application Cost Comparisons Considering Herd Size, Transport Distance, And Nitrogen Versus Phosphorus Application Rates, Robert T. Burns, A. S. Daugherty, T. L. Cross, D. Raj Raman, G. F. Grandle
D. Raj Raman
This study provides cost comparisons for the transport and application of dairy waste slurries based on both phosphorus and nitrogen application rates. Estimated cost comparisons are made for several commonly used systems for dairy waste transport and application. Five dairy sizes ranging from 50 to 2,000 cows using 13 transport and application systems were evaluated. For each dairy size, the costs associated with the transport and application system combinations were determined for transport distances of 0.5, 1.5, and 4.5 miles for both nitrogen and phosphorus-based application rates. Total annual system cost, cost per acre, cost per cow, and manure value …
A Case Study Of Bioengineering In America: Profits, Risks And Standards Of Value In The Commercialization Of Monsanto Company's Newleaf Potato, Bridget Lyons, Teresa Ralabate, Nadhim Frangul
A Case Study Of Bioengineering In America: Profits, Risks And Standards Of Value In The Commercialization Of Monsanto Company's Newleaf Potato, Bridget Lyons, Teresa Ralabate, Nadhim Frangul
WCBT Faculty Publications
Last year, approximately 45 million acres of American farmland were planted with crops that had been genetically engineered to either produce their own pesticides, or withstand herbicides. The long and short-term effects of this biotechnology on humans and the environment, are being studied, but remain unknown. Leading the way in the field of bioengineered crops is the Missouri-based Monsanto Company. Monsanto believes that current agricultural practices are inconsistent with sustainable development. The NewLeaf potato is one of three products Monsanto has created to feed the growing world population. The genetically engineered crop produces, in every cell of the plant, a …