Introduction Direct energy expenses (diesel, gasoline, propane, electricity) total more than $1 billion annually for Iowa farmers. Farm management techniques such as adjusting tractor gear and throttle settings or reducing tillage depths can reduce diesel fuel consumption for row crop production. This study is being conducted over multiple years to measure the effects of energy management techn...

Introduction Direct energy expenses (diesel, gasoline, propane, electricity) total more than $1 billion annually for Iowa’s farmers. Day-to-day farm management techniques such as adjusting tractor gear and throttle settings or monitoring tractor tire inflation pressures can reduce diesel fuel consumption for row crop production. This study is being conducted over multiple years to measure the e...

The rapid consumption of petroleum deposits and the escalating air pollution problems caused by burning fossil fuels have driven the global research community to look for cleaner and renewable energy resources. Albeit not a primary energy source, hydrogen is an ideal energy carrier. It almost triples the gravimetric heat of combustion of gasoline (120 MJ kg 1 vs. 44.5 MJ kg ). More importantly,...

This paper studies a potential e ect of gasoline prices that has been overlooked in the literature. Due to heterogeneity in demand for vehicle miles traveled (VMT), when gasoline prices increase, the increased cost of operating an ine cient vehicle are greater for households that drive more. Thus, in equilibrium, after an increase in the gasoline prices there should be a stronger matching from ...

Plug-in hybrid electric vehicles (PHEVs) use grid electricity as well as on-board gasoline for motive force. These multiple energy sources make prediction of PHEV energy consumption challenging and also complicate evaluation of their environmental impacts. This paper introduces a novel PHEV energy consumption modeling approach and compares it to a second approach from the literature, each using...

Introduction Direct energy expenses (diesel, gasoline, propane, electricity) total more than $1 billion annually for Iowa’s farmers. Day-to-day farm management techniques such as adjusting tractor gear and throttle settings, making use of front-wheel-drive, and other strategies can reduce diesel fuel consumption for row crop production and general tractor operations. This study is being conduct...

Introduction Direct energy expenses (diesel, gasoline, propane, electricity) total more than $1 billion annually for Iowa’s farmers. Day-to-day farm management techniques such as adjusting tractor gear and throttle settings, reducing tillage depths, and monitoring tractor tire inflation pressures can reduce diesel fuel consumption for row crop production. This study is being conducted over mult...

This article provides a personal reflection 30 years after we created the concept of automobile dependence. The paper entitled “Gasoline Consumption and Cities: A Comparison US Cities with Global Survey Its Implications” an associated book “Cities Automobile Dependence” stirred up transport planning, especially in US. We examine criticisms, this evoked at time within perspective what has happen...

This article analyses recent trends and spatial patterns of gasoline consumption in Nigeria. In particular, it shows that the volume country fluctuates with changes economic growth. The pattern distribution indicates largest centres are South-West South-South geopolitical zones country, specifically Lagos, Oyo, Ogun, Edo, Rivers Delta States. Other locations high Kaduna, Kano, Imo states Abuja ...