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Work22

Resource type

Dissertation22

Creator

Ale Ahmad, Haleh Sadat1
Dallmann, Jonathan1
Han, Jialun1
Jin, Zhefei1
Li, Xiang1
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Keyword

Size Effect2
Air Pooling1
Alkali-Silica Reaction1
Aperture1
Architected Material1
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Subject

Civil engineering[remove]22
Transportation6
Mechanical engineering4
Mechanics4
Geotechnology3
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Language

en22

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Filtering by: 2024-06-24 Remove constraint 2024-06-24 Subject Civil engineering Remove constraint Subject: Civil engineering

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Telemobility through the pandemic: Longitudinal tracking, modeling and outlook

Description:

The COVID-19 pandemic disrupted the status quo of the telemobility landscape in the United States, forcing millions of Americans into lock down, significantly changing the way we work, travel, and spend our time and money for an extended period of time. After several months of adaptation, adoption, learning, and unlearning,...

Keyword:

latent variable modeling, e-commerce, covid-19, longitudinal tracking, telemobility, and telework

Subject:

Transportation and Civil engineering

Creator:

Tahlyan, Divyakant

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16722 and etdadmin_upload_1012495
Modelling of Slow-moving Landslide Dynamics Driven by Precipitation: from Stable Creep to Catastrophic Runaway Failure

Description:

Slow-moving landslides are common in mountainous area worldwide. Most of them mobilizes slowly over long periods of time, which causes continuous damage to proximal infrastructure and habitats. Most notably, some slow-moving landslides can experience catastrophic acceleration at some point in their life cycle, with potentially fatal consequences. It is therefore...

Subject:

Geotechnology and Civil engineering

Creator:

Li, Xiang

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

09/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_927309 and http://dissertations.umi.com/northwestern:16221
Multi-Scale Assessment of the Role of the Particle Shape on the Crushability of Sand

Description:

Granular materials consisting of discrete particles, are a pervasive material in nature and play a major role in disparate fields of science and technology. To control and manipulate the granular materials in engineering, enriching our understanding of their fundamental characteristics and mechanical behavior is crucial. In this context, one of...

Keyword:

Shape evolution, Grain morphology, Granular materials, and Particle crushing/crushability

Subject:

Civil engineering

Creator:

Seo, Dawa

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

09/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16194 and etdadmin_upload_924292
Multiscale Lattice Discrete Particle Modeling of Concrete: Micromechanics, Scaling, Dynamics

Description:

Over 10 billion tons of concrete are produced for the construction industry every year, making concrete the second most used substance on Earth, only surpassed by water. With such high importance as a building material, there is significant need for the ability to accurately model concrete behavior. As a quasi-brittle...

Keyword:

Lattice Discrete Particle Model, Concrete, Micromechanics, Dynamics, Numerical Models, and Size Effect

Subject:

Materials Science, Computational physics, and Civil engineering

Creator:

Troemner, Matthew

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

06/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_878306 and http://dissertations.umi.com/northwestern:15920
Assessing Optimal Modes of Soil Parameter Identification

Description:

This thesis describes an exploratory project to develop a highly non-traditional approach to devise novel test methods for characterizing the properties of materials that are essential to the design of sustainable and resilient infrastructure, particularly naturally occurring materials such as soils and rocks. The central idea is that the material...

Subject:

Civil engineering

Creator:

Nally, Anastasia

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

06/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16010 and etdadmin_upload_898203
Development and Application of a Dynamic Solution Framework for Urban Air Taxi Fleet Operation

Description:

Urban Air Taxi (UAT) is the use case of passenger-carrying Urban Air Mobility (UAM) at its mature state, and it offers a ubiquitous on-demand (or nearly on-demand) per-seat service that moves passengers in urban or suburban areas using groundbreaking aircraft. However, the absence of a dominant electric vertical take-off and...

Keyword:

Short Repositioning Elimination, Urban Air Mobility (UAM), Real-time Fleet Operation, Urban Air Taxi, and Air Pooling

Subject:

Transportation and Civil engineering

Creator:

Ale Ahmad, Haleh Sadat

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

06/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:15931 and etdadmin_upload_879342
Across Scales: An Examination of the Impacts of Turbulence and Mobile Bedforms on Hyporheic Exchange

Description:

In this dissertation, advances are made in understanding both the way hyporheic exchange impacts riverbed morphodynamics and the physical processes that lead to turbulent momentum transfer in the first few grains of riverbed sediments. In terms of physical advances in understanding the interplay between bedform movement and hyporheic exchange, we...

Keyword:

Hyporheic Exchange, LES, Flume Experiments, Turbulence, and Bedforms

Subject:

Environmental engineering, Mechanical engineering, and Civil engineering

Creator:

Dallmann, Jonathan

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

06/28/2021

Date Created:

2021-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_819194 and http://dissertations.umi.com/northwestern:15572
Modeling Fundamental Processes in Soil-Machine Interaction

Description:

Soil-Machine Interaction (SMI) is ubiquitous on Earth and other planets. Over decades, ground-engaging equipment has been developed and widely used in various engineering applications, including civil construction, agriculture, terrestrial mobility, and even space exploration. However, systematic studies of SMI processes and the corresponding soil behavior are inadequate, which obstructs further...

Keyword:

Soil-machine interaction, Sand , Semi-analytical model , Experimental study , Particle image velocimetry analysis, and Sequential kinematic model

Subject:

Civil engineering

Creator:

Jin, Zhefei

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

04/15/2021

Date Created:

2021-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_797724 and http://dissertations.umi.com/northwestern:15486
Integrated Transit System Design with Autonomous Vehicle Fleet Services: Mathematical Formulation, Solution Approach and Large-Scale Application

Description:

Providing quality transit service to travelers is a constant challenge for transit agencies. The advent of fully-autonomous vehicles (AVs) and their inclusion in mobility service fleets may allow transit agencies to offer better service or reduce their own capital and operational costs. This study focuses on the problem of allocating...

Keyword:

public transit, autonomous vehicles, optimization, network modeling, and shared mobility

Subject:

Transportation, Civil engineering, and Urban planning

Creator:

Pinto, Helen

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

04/15/2021

Date Created:

2021-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_796818 and http://dissertations.umi.com/northwestern:15474
Analyzing and improving transportation infrastructure privatization in a competitive environment

Description:

The transportation infrastructure privatization is an essential solution to the public fund's shortage of transportation investments. In the privatization practices, the private firms build, operate, and own the transportation infrastructure under a limited term. Due to the private sector's involvement, the efficiency of the transportation service is determined not only...

Keyword:

Tolling and capacity decision, Pareto efficiency analysis, Mechanism design, Transportation infrastructure, Network analysis, and Public-private partnership

Subject:

Transportation and Civil engineering

Creator:

Shu, Hang

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/01/2021

Date Created:

2020-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_764914 and http://dissertations.umi.com/northwestern:15283

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