Results 61 to 70 of about 347,607 (294)

When the River Runs Low: Heterogeneous Impacts of Transportation Disruptions on Local Grain Basis

open access: yesAgribusiness, EarlyView.
ABSTRACT A substantial share of U.S. soybean and corn exports from the Midwest moves by barge along the Mississippi River system to export terminals in the Louisiana Gulf. Transportation costs between Midwestern grain elevators and export terminals create a wedge between prices at these locations, and shocks to these costs are partially passed on to ...
Yuan Zhang   +3 more
wiley   +1 more source

Transit in Washington, D.C.: Current Benefits and Optimal Level of Provision [PDF]

open access: yes
The discrepancy between transit’s large share of local transportation resources and its generally low share of local trips has raised questions about the use of scarce transportation funds for this purpose.
Harrington, Winston   +4 more
core  

On the link between rail transit and spatial income segregation

open access: yes, 2020
The link between transportation infrastructure and income segregation has long been recognized in the literature, but has received renewed attention with the increased investment in rail transit in US cities. In this paper, we examine the impacts of rail
Nilsson, Isabelle   +1 more
core   +1 more source

Design and Characterization of a Dual‐Mode Soft Robotic Flapping Propeller With Pneumatic Stiffness Modulation

open access: yesAdvanced Intelligent Systems, EarlyView.
A novel soft robotic propeller overcomes traditional efficiency‐flexibility tradeoffs via a hybrid pneumatic‐cable actuation strategy. This architecture enables active stiffness modulation with dual‐mode locomotion: tunable biomimetic swimming and earthworm‐inspired wriggling for confined spaces.
Jiazi Geng   +6 more
wiley   +1 more source

Reconfigurable Design and Optimization‐Based Control of an Integrated Leg‐Arm Robot for Space Applications With an Underactuated Body

open access: yesAdvanced Intelligent Systems, EarlyView.
A quadrupedal integrated leg‐arm robot with an underactuated reconfigurable body is developed. By using a Sarrus mechanism as the body, the robot enables reconfiguration through its supporting limbs, achieving mode switching without additional actuators.
Xinghan Zhuang   +8 more
wiley   +1 more source

Cloud-edge cooperative optimization scheduling strategy of metro integrated supervision and control system based on edge computing

open access: yesComplex & Intelligent Systems
Metro Integrated Supervision and Control System (MISCS) belongs to the category of integrated automation of electromechanical equipment of urban rail transit, through establishing the monitoring and control of each electromechanical equipment system ...
Yang Wang   +6 more
doaj   +1 more source

Ohio Hub passenger rail economic impact study [PDF]

open access: yes, 2007
Title from PDF cover (viewed on Jan. 9, 2008).; "May 2007."; Includes bibliographical references (p. G1-G2).; Harvested from the web on 1/8/08The purpose of this study is to measure both the demand and supply benefits by the development of the Ohio Hub ...
Ohio Rail Development Commission.
core  

Characterization and Selection of Contractile Actuators for Soft Robotics Operating in the Quasistatic Regime

open access: yesAdvanced Intelligent Systems, EarlyView.
We developed methods to characterize soft contractile actuators using force–displacement measurements in the passive state and the total force in the active state and define the operational range of thermal, electrothermal, and pneumatic muscles. A graphical method enables the selection of an actuator based on the required mechanical force–displacement
Qiong Wang   +5 more
wiley   +1 more source

The Impact of Transit Corridors on Residential Property Values [PDF]

open access: yes
Most of the literature on transit corridors, such as superhighways and tunnels, focuses on the positive externality of transit access (e.g., interstate access, transit station) and fails to isolate the negative externality of the corridor itself.
John I. Carruthers   +3 more
core  

Towards Human‐Centered Intelligent Inhabitable Spaces: A Review

open access: yesAdvanced Intelligent Systems, EarlyView.
This review introduces Robot‐Rooms as a new category of architectural‐scale robots that do not operate within a space but actively form and reconfigure the space around their occupants. Drawing from robotics, HCI, architecture, and the arts, an interdisciplinary framework is proposed that maps the enabling technologies and integration challenges ...
Nithesh Kumar   +3 more
wiley   +1 more source

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