Results 161 to 170 of about 23,842 (308)

The Oklahoma Series: Volume 7

, 1977
Book discussing the history of the railroads in Oklahoma, including stories of individual railroads and their effects on the Indian population in the state.
Hofsommer, Donovan L.
core  

Numerically efficient mechanical modeling of reinforced concrete membrane elements with fixed, interlocked cracks

Structural Concrete, EarlyView.
Abstract Compression field approaches such as the Cracked Membrane Model with fixed, interlocked cracks (CMM‐F) are efficient tools for the mechanical modeling of reinforced concrete elements, providing the mechanical model σ=fε$$ \boldsymbol{\upsigma} =f\left(\boldsymbol{\upvarepsilon} \right) $$ required for finite element analyses.
Andreas Näsbom, Karel Thoma, Walter Kaufmann   +2 more
wiley   +1 more source

Network issues and payment systems [PDF]

Highways, railroads, pipelines—we see or hear about these types of physical networks almost every day. But information systems, such as the Internet, and payment systems, such as ATMs and credit cards, also involve networks.
James J. McAndrews
core  

Description of the geographic distribution of excessive drinking across regional cultures in the United States: Framing an important health metric according to the cultural context of the American nations. [PDF]

PLoS One
Phillips SA, Arena R, Pronk NP, Woodard C.   +3 more
europepmc   +1 more source

Enhancing durability of steam‐cured precast concrete culverts using SCMs: A comparative study with delithiated beta spodumene

Structural Concrete, EarlyView.
Abstract Steam curing is commonly used to manufacture precast culverts to accelerate early strength development. This study investigates the effect of supplementary cementitious materials (SCMs) on the permeability properties of steam‐cured precast concrete culverts.
Saugat Humagain, Prabir Kumar Sarker, Faiz Uddin Ahmed Shaikh, Daksh Baweja   +3 more
wiley   +1 more source

Railroads - Workers

, 1910
Images of buildings, life, people, railroads and scenic views taken by William Edward Hook between 1878 and ...
Hook, William Edward
core  

Eye movement predictors of hazard response performance in train drivers under different speed conditions. [PDF]

Sci Rep
Yang L, Xia M, Wang Y, Fang D, Jing X, Ma J.   +5 more
europepmc   +1 more source

Multi‐level fatigue reliability assessment of reinforced concrete railway bridges

Structural Concrete, EarlyView.
Abstract This paper presents a multi‐level reliability framework for assessing the fatigue life of reinforced concrete (RC) railway trough bridges subjected to cyclic loading. The framework incorporates increasing levels of analytical complexity and real‐world data in four steps. First, an analytical model applies S–N curves and the Palmgren–Miner rule
Silvia Sarmiento, Jaime Gonzalez‐Libreros, Chao Wang, Lennart Elfgren, Ola Enoksson, Tommy Höjsten, Lars‐Olof Andersson, Gabriel Sas   +7 more
wiley   +1 more source

Wartime Problems of American Railroads, 1939-1945

, 1983
The World War II experience of the American railroads was characterized by a close relationship between the railroads and the federal government. Unlike in World War I, however, when the railroads were actually operated by the government, the railroads ...
McMurtry, Walter Lawrence
core  

Automatic 3D railroad alignment detection using modified Hough transform. [PDF]

Sci Rep
Lee J, Park J, Shin H, Yoon H.
europepmc   +1 more source