Results 81 to 90 of about 49,160 (240)

Scheduling Bodyguards

Naval Research Logistics (NRL), EarlyView.
ABSTRACT Security agencies around the world use bodyguards to protect government officials and public figures. In this paper, we consider a two‐person zero‐sum game between a defender who allocates such bodyguards to protect several targets and an attacker who chooses one target to attack.
Loe Schlicher, Kyle Y. Lin, Moshe Kress
wiley   +1 more source

A Bio-Wicking System to Prevent Frost Heave in Alaskan Pavements: Phase II Implementation [PDF]

, 2019
Water within pavement layers is the major cause of pavement deterioration. High water content results in significant reduction in soil’s resilient behavior and an increase in permanent deformation.
Galinmoghadan, Javad, Lin, Chang, Zhang, Xiong   +2 more
core  

Why Autonomous Vehicles Are Not Ready Yet: A Multi‐Disciplinary Review of Problems, Attempted Solutions, and Future Directions

Journal of Field Robotics, EarlyView.
ABSTRACT Personal autonomous vehicles can sense their surrounding environment, plan their route, and drive with little or no involvement of human drivers. Despite the latest technological advancements and the hopeful announcements made by leading entrepreneurs, to date no personal vehicle is approved for road circulation in a “fully” or “semi ...
Xingshuai Dong, Massimiliano Cappuccio, Fady Alnajjar, Luqman Ali, Hamad Al Jassmi, Essam Debie, Milad Ghasrikhouzani, Alessandro Lanteri, Tate McGregor, Oleksandra Molloy, Alice Plebe, Michael Regan, Eduardo Sandoval, Dongmo Zhang   +13 more
wiley   +1 more source

Performance Evaluation of Open Graded Base Course with Doweled and Non-Doweled Transverse Joints [PDF]

, 2010
The objectives of this study were to investigate the performance of 20-year old doweled/non-doweled and dense-graded/permeable base test sections on three concrete pavement segments in Wisconsin: USH 18/151 in Iowa and Dane counties, STH 29 in Brown ...
Crovetti, James, Owusu-Ababio, Samuel, Schmitt, Robert   +2 more
core   +1 more source

Toward transparent AI: Predicting strength of fly ash foam composite concrete using explainable ML models

Structural Concrete, EarlyView.
Abstract Fly ash foam composite concrete (FFC) is a sustainable, lightweight alternative to traditional concrete. However, accurately predicting its compressive strength (CS) through conventional laboratory methods is challenging due to its non‐linear behavior induced by the addition of foam content and fly ash. Also, the laboratory determination of CS
Atta Ullah, Yongfeng Yang, Wali Ullah, Bilal Ayub, Abdullah Alzlfawi, Imtiaz Iqbal   +5 more
wiley   +1 more source

Coupling control technology of anchoring and unloading in deep intense-mining and large-deformation roadway: a case study

Scientific Reports
In order to control the deformation of surrounding rock in deep high-stress and intense-mining roadways, taking a deep coal roadway with continuous deformation as an example, the characteristics of crustal stress, coal strength, and mining influence of ...
En Wang, Shuaifeng Yin, Qingtao Kang, Xubo Zhao, Qiankun Lan, Hongyuan Sheng, Huiyang Liang   +6 more
doaj   +1 more source

Research progress of support theory and technology of the roadway surrounding rock based on the plastic zone control

Meitan xuebao
With the increasing depth of coal mining, the stability control of surrounding rock in deep roadway has become one of major problems in the mining field, and the effect of surrounding rock control in deep roadway is directly related to the safe ...
Weijun WANG, Lei FAN, Zhiqiang ZHAO, Sen HAN   +3 more
doaj   +1 more source

Systematic Learning and Pedagogy Through a Modular, Progressive‐Based Simulation Modeling Framework for Complex Systems

Systems Engineering, EarlyView.
ABSTRACT Smart Transportation Systems (SmTS) will exceed complex systems with their classification as complex, sociotechnical, and AI‐based systems. Possessing a toolkit that helps systemically understand, analyze, and assess these systems will be advantageous in the early stages of the systems engineering (SE) lifecycle, and Agent Based Models (ABMs ...
Ifezue V. Obiako, Sean B. Walker, Kari J. Lippert, Robert J. Cloutier   +3 more
wiley   +1 more source

Failure Mechanism for Surrounding Rock of Deep Circular Roadway in Coal Mine Based on Mining-Induced Plastic Zone

Advances in Civil Engineering, 2018
In order to reveal the failure mechanism of the deep roadway under mining-induced pressure in coal mine, the boundary equations for the plastic zone around the deep roadway were deduced, and then the evolution laws for morphology of the plastic zone and ...
Yue Yuan, Weijun Wang, Shuqing Li, Yongjian Zhu   +3 more
doaj   +1 more source

Presplitting Blasting the Roof Strata to Control Large Deformation in the Deep Mine Roadway

Advances in Civil Engineering, 2020
As the mining depth increases, under the influence of high ground stress, the surrounding rock of deep mine roadways shows soft rock characteristics.
Chaowen Hu, Xiaojie Yang, Ruifeng Huang, Xingen Ma   +3 more
doaj   +1 more source