Browsing Civil and Environmental Engineering by Type "Article"
Now showing items 21-35 of 35
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The pie sharing problem: Unbiased sampling of N+1 summative weights
(Elsevier, 2022-02)A simple algorithm is provided for randomly sampling a set of N+1 weights such that their sum is constrained to be equal to one, analogous to randomly subdividing a pie into N+1 slices where the probability distribution ... -
Probability distribution of the seismic damage cost over the life cycle of structures
(Elsevier, 2018-05-01)In the life-cycle analysis, the total cost of damage caused by earthquakes is a significant but highly uncertain component. In the current literature, the seismic risk analysis is largely limited to the evaluation of the ... -
Realistic expectations for the treatment of FMGP residuals by chemical oxidants
(Elsevier, 2018-12-01)Methods to remediate soil and groundwater contamination at former manufactured gas plant (FMGP) sites are scarce. The objective of this study was to investigate the ability of two chemical oxidants (persulfate and permanganate) ... -
Recognizing Structural Nonidentifiability: When Experiments Do Not Provide Information About Important Parameters and Misleading Models Can Still Have Great Fit
(Wiley, 2020-02)In the quest to model various phenomena, the foundational importance of parameter identifiability to sound statistical modeling may be less well appreciated than goodness of fit. Identifiability concerns the quality of ... -
Reduction of chlorendic acid by zero-valent iron: Kinetics, products, and pathways
(Elsevier, 2020-02-15)Chlorendic acid (CA) is a recalcitrant groundwater contaminant for which an effective treatment technology does not currently exist. In this study, a series of batch experiments were conducted to investigate the treatment ... -
Semi-continuous measurement of oxygen demand in wastewater using biofilm-capacitance
(Elsevier, 2018-09-01)Bio-capacitive coulombs were tested for determination of the 5-day biochemical oxygen demand (BOD5) using a dual-chamber microbial electrochemical cell (MxC) operated at charging (open circuit) and discharging (close ... -
Shear deformation effects on stability of unbraced steel frames in variable loading
(Journal of Constructional Steel Research, 2019-11-11)The generalized lateral stiffness equation of a semi-rigidly connected frame with accounting for shear deformation is derived in this paper. The lateral stiffness equation can be used to determine the critical loads of ... -
Simulation of Induced Acoustic Emission in Fractured Porous Media
(Elsevier, 2019-04-01)Acoustic/microseismic Emissions (AE) in naturally fractured porous media are the result of local instability along internal interfaces and the sudden release of strain energy stored in the rock matrix. This rapid release ... -
Stability-based fire resistance duration of unbraced steel frames
(Journal of Structural Fire Engineering, 2020)Purpose The collapse of a structure resulting from the instability of steel frames due to fire is the worst failure mode to consider in fire-structural engineering, and should be avoided. The purpose of this paper is to ... -
State of research in automatic as-built modelling
(Elsevier, 2015-04-01)Building Information Models (BIMs) are becoming the official standard in the construction industry for encoding, reusing, and exchanging information about structural assets. Automatically generating such representations ... -
Storey-based stability of multi-storey steel semi-braced and unbraced frames with semi-rigid connections
(American Society of Civil Engineers, 2021-01)A simplified method is proposed for evaluating the stability of multi-storey, steel semi-braced and unbraced frames with semi-rigid connections. The proposed method decomposes a frame into individual storeys and evaluates ... -
Storey-based stability of steel frames subjected to post-earthquake fire
(Fire Technology, 2020-02)Post-earthquake fires occur after earthquakes and have commonly been encountered throughout history. The fires are particularly deadly and threaten the stability of buildings as possible structural damages caused by seismic ... -
Storey-based stability of unbraced steel frames under piece-linear temperature distributions
(Elsevier, 2019-05-21)There are many cases where the elastic modulus of a structural member will vary longitudinally, such as when a steel column is heated by fire. In such a case, the fire can compromise the integrity of the structural frame. ... -
Upflow anaerobic-microaerobic fixed biofilm reactor integrating methanogenesis with partial nitrification
(Elsevier, 2018-09-15)An anaerobic-microaerobic fixed biofilm (AMFB) reactor, that integrates methanogenesis with partial nitrification within a single unit was investigated to achieve carbon removal simultaneously with ammonium oxidation in ... -
Usage of Interface Management System in Adaptive Reuse of Buildings
(MDPI, 2019-05)Adaptive reuse of buildings is considered a superior alternative for new construction in terms of sustainability and a disruptive practice in the current capital project delivery model for the renewal of today’s built ...