We estimate the effect of Internet on volume of trade in a major distributed marketplace. From 1997 to 2007, a period during which residential Internet use tripled, Internet increased the volume of used cars traded in California by 7.2 percent. This implies a substantial welfare gain due to reductions in market frictions of approximately $43 million per year relative to 1997 Internet penetratio...

J Skoda was born in Pilsen, Bohemia, to a locksmith, who lacked funds for the higher education of his three sons. Remarkably, each son acquired stature, respect and enviable position in the society, despite initial adversity. Joseph and elder brother Franz studied medicine. Franz advanced to public health officialdom and a Royal title. Younger brother Johann turned to heavy industry and founded...

This study involved the determination of the impact performance of the Texas Metal Beam Guard Fence median barrier (MBGF) and a comparison of its performance with that of the Texas Concrete Median Barrier (CMB). The MRGF consists of two standard W-shaped guardrails mounted back-to-back on a 6 WF 8.5 support post whereas the CMB is a solid concrete barrier. The impact performance of the MBGF was...

Nanogenerators (NG) have been developed to harvest mechanical energy from environmental sources such as vibration, human motion, or movement of automobiles. We demonstrate a robust and large-area NG based on a cost-effective Al substrate with the capability to be easily integrated in series and parallel for high-output performance. The output voltage and current density of the three-dimensional...

Recently, the importance of obstacle detection methods for railway has been increasing. In field automobiles, systems with sensors have introduced on mass-produced vehicles. However, in railway, a practical system does not exist because railways require longer distances than do automobiles. Therefore, we developed train frontal method using camera and LiDAR. We confirmed that our detects person...

We study the effect of information on market outcomes using a field experiment. By randomly manipulating the availability of information about wholesale automobile quality, we measure the effect of information on market outcomes. As the theoretical literature predicts, more information increases expected revenues. However, the biggest gains in revenue are for the lowest and highest quality grad...

Consumption Expenditure Of the four components of aggregate demand, consumption expenditure C is the largest contributing to between 60% and 70% of total expenditure. For this reason, we often start our analysis with this particular component. This category of expenditure includes private spending on durable goods (automobiles, electronic goods, appliances, ... ), non-durable goods (food, cloth...

In a world that is increasingly reliant on automobiles, efficient management of the transportation network for increased satisfaction and safety is a key functionality of intelligent transportation systems (ITS). A wide range of these ITS applications rely on the extraction of current data as well as historical information in order to perform appropriately. This paper presents a general framewo...