A methodology for uncertainty quantification and sensitivity analysis for responses subject to Monte Carlo uncertainty with application to fuel plate characteristics in the ATRC

Dean Price,Andrew Maile,Joshua Peterson-Droogh,Derreck Blight 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.3

Large-scale reactor simulation often requires the use of Monte Carlo calculation techniques to estimateimportant reactor parameters. One drawback of these Monte Carlo calculation techniques is they inevitablyresult in some uncertainty in calculated quantities. The present study includes parametric uncertaintyquantification (UQ) and sensitivity analysis (SA) on the Advanced Test Reactor Critical (ATRC)facility housed at Idaho National Laboratory (INL) and addresses some complications due to Monte Carlouncertainty when performing these analyses. This approach for UQ/SA includes consideration of MonteCarlo code uncertainty in computed sensitivities, consideration of uncertainty from directly measuredparameters and a comparison of results obtained from brute-force Monte Carlo UQ versus UQ obtainedfrom a surrogate model. These methodologies are applied to the uncertainty and sensitivity of keff for twosets of uncertain parameters involving fuel plate geometry and fuel plate composition. Results indicate that the less computationally-expensive method for uncertainty quantification involvinga linear surrogate model provides accurate estimations for keff uncertainty and the Monte Carlo uncertaintyin calculated keff values can have a large effect on computed linear model parameters for parameterswith low influence on keff.

Morphological enhancement to CuO nanostructures by electron beam irradiation for biocompatibility and electrochemical performance

Shinde, S.K.,Kim, D.-Y.,Ghodake, G.S.,Maile, N.C.,Kadam, A.A.,Lee, Dae Sung,Rath, M.C.,Fulari, V.J. Elsevier 2018 Ultrasonics sonochemistry Vol.40 No.1

<P><B>Abstract</B></P> <P>This paper reports the effect of electron beam irradiation on CuO thin films synthesized by the successive ionic layer adsorption and reaction (SILAR) method on copper foil for supercapacitor and biocompatibility application. Pristine and irradiated samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and electrochemical study. Pristine and irradiated CuO films were pure monoclinic phase, with uniform nanostructures over the whole copper foil. After irradiation, CuO samples had formed innovative nanostructures. Biocompatibility of pristine and irradiated CuO samples suggest that CuO sample is non-toxic and ecofriendly. The specific capacitance of pristine and irradiated CuO strongly depends on surface morphology, and CuO electrodes after irradiation showed superior performance than pristine CuO. The highest specific capacitance of the 20kGy irradiated CuO nanoflowers exceeded 511Fg<SUP>−1</SUP> at 10mVs<SUP>−1</SUP> in 1M KOH electrolyte. Irradiated CuO samples also showed lower ESR, and were superior to other report electrical energy storage materials.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Novel route for the synthesis of pure CuO thin films. </LI> <LI> Different nanostructure of pure CuO and irradiated CuO electrode. </LI> <LI> 20kGy irradiated CuO electrode offer high surface area. </LI> <LI> 20kGy irradiated CuO electrode shows excellent supercapacitive properties. </LI> </UL> </P>

Nanorods to hexagonal nanosheets of CuO-doped manganese oxide nanostructures for higher electrochemical supercapacitor performance

Yadav, H.M.,Ghodake, G.S.,Kim, D.-Y.,Ramesh, Sivalingam,Maile, N.C.,Lee, D.S.,Shinde, S.K. Elsevier 2019 Colloids and surfaces Biointerfaces Vol.184 No.-

<P><B>Abstract</B></P> <P>In this work, the extraordinary properties of CuO addition on the morphology and supercapacitive performance of Mn<SUB>2</SUB>O<SUB>3</SUB> electrodes were demonstrated. Concisely, CuO/Mn<SUB>2</SUB>O<SUB>3</SUB> thin films were prepared by an easy and inexpensive successive ionic layer adsorption and reaction (SILAR) method. The prepared thin films were characterized by various sophisticated physiochemical systems. The results demonstrated formation of Mn<SUB>2</SUB>O<SUB>3</SUB> thin films with noteworthy morphological alteration upon introduction of CuO. Furthermore, a significant effect of CuO introduction was observed on the electrocatalytic properties of the nanostructured Mn<SUB>2</SUB>O<SUB>3</SUB> electrodes. At 3% CuO doping, the Mn<SUB>2</SUB>O<SUB>3</SUB> electrodes displayed the maximum specific capacitance owing to formation of nanoplate-like structures. The enhanced specific capacitance attained for 3% CuO doping in the Mn<SUB>2</SUB>O<SUB>3</SUB> electrode was 500 F/g at 5 mV/s in a 3 M KOH electrolyte. All results confirmed the plausible potential of the CuO/Mn<SUB>2</SUB>O<SUB>3</SUB> electrode for supercapacitor applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Novel and simple chemical synthesis route for CuO doped Mn<SUB>2</SUB>O<SUB>3</SUB> thin films. </LI> <LI> Different nanostructures of CuO doped Mn<SUB>2</SUB>O<SUB>3</SUB> thin films prepared by altering doping percentage. </LI> <LI> 3% CuO doped Mn<SUB>2</SUB>O<SUB>3</SUB> thin films show the higher current density 15.33 mA/cm<SUP>1</SUP>. </LI> <LI> CuO doped electrodes show higher electrical performance than the other electrodes. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>CV and SEM images of 3% CuO doped Mn<SUB>2</SUB>O<SUB>3</SUB> thin films synthesized by SILAR method.</P> <P>[DISPLAY OMISSION]</P>

An Investigation of Financial Investment Intention using Covariance-Based Structural Equation Modelling

Thien Sang Lim,Rasid Mail,Mohd Rahimie Abd Karim,Zatul Karamah Abdul Baharul Ulum,Mazalan Mifli,Junainah Jaidi 사람과세계경영학회 2020 Global Business and Finance Review Vol.25 No.2

Purpose: Decision-making process about financial investment is complicated. Relying on modern financial theory to explain behaviours of individual investors is inadequate because it focuses on the objective risk as the determinant for making investment decisions under the assumption that individuals are rational. The current study, which was built from the financial, sociological and psychological perspectives, investigated the predictors of risk perception and determined the association of risk perception and attitude toward financial investment intention. This study served the purpose of unravelling the complexity of the financial investment decision-making process among individuals. Design/methodology/approach: The research framework was based on Perception Formation Model (PFM) with further support from the Theory of Planned Behaviour, decision making models under risk, and knowledge-attitudebehaviour model. Purposive-sampling method was adopted. The dataset, which consisted a total of 492 responses from income earners below the age of prime savings years were entered for analysis. Twelve hypotheses were tested using the Analysis of Moment Structures (AMOS) statistical software. Findings: Measurement-model assessment revealed the data fitted well to the research model Results from the structural-model assessment revealed subjective knowledge, peer influence, internet influence, and risk propensity had a significant relationship with favourable risk perception. Consistent with the PFM proposition, it was found favourable risk perception significantly related to higher intention toward financial investment. Research limitations/implications: The resultant outcomes strengthen the understanding of how financial investment decision is performed by individuals, which is crucial in the personal-finance industry, especially in promoting a long-term and meaningful client-advisor relationship. Interestingly, objective knowledge, which measured the actual level of financial knowledge was found to be insignificantly associated with risk perception and intention toward financial investment. As a sizeable financial literature posited financial knowledge has impact on decision-making process, future study could perhaps examine whether objective knowledge could contextually alter the relationship between predictors and the endogenous variable. Originality/value: The study has successfully identified several predictors for risk perception about financial investment and provided an empirical link for knowledge-perception-attitude-intention, thus, enriching the behavioural finance literature. The research model was robust as it was formulated based on the three major pillars of behavioral finance, namely: financial, sociological, and psychological perspectives.

Risk Analysis of Supply Chain Food Loss on Fishery Products Using Failure Mode Effect and Supply Chain Operation Reference Model

Nurul Chairany,Ahmad Padhil,Abdul Mail,Nurhayati Rauf 대한산업공학회 2023 Industrial Engineeering & Management Systems Vol.22 No.1

Single nucleotide polymorphism-based analysis of the genetic structure of Liangshan pig population

Liu, Bin,Shen, Linyuan,Guo, Zhixian,Gan, Mailing,Chen, Ying,Yang, Runling,Niu, Lili,Jiang, Dongmei,Zhong, Zhijun,Li, Xuewei,Zhang, Shunhua,Zhu, Li Asian Australasian Association of Animal Productio 2021 Animal Bioscience Vol.34 No.7

Objective: To conserve and utilize the genetic resources of a traditional Chinese indigenous pig breed, Liangshan pig, we assessed the genetic diversity, genetic structure, and genetic distance in this study. Methods: We used 50K single nucleotide polymorphism (SNP) chip for SNP detection of 139 individuals in the Liangshan Pig Conservation Farm. Results: The genetically closed conserved population consisted of five overlapping generations, and the total effective content of the population (Ne) was 15. The whole population was divided into five boar families and one non-boar family. Among them, the effective size of each generation subpopulation continuously decreased. However, the proportion of polymorphic markers (P_N) first decreased and then increased. The average genetic distance of these 139 Liangshan pigs was 0.2823±0.0259, and the average genetic distance of the 14 boars was 0.2723±0.0384. Thus, it can be deduced that the genetic distance changed from generation to generation. In the conserved population, 983 runs of homozygosity (ROH) were detected, and the majority of ROH (80%) were within 100 Mb. The inbreeding coefficient calculated based on ROH showed an average value of 0.026 for the whole population. In addition, the inbreeding coefficient of each generation subpopulation initially increased and then decreased. In the pedigree of the whole conserved population, the error rate of paternal information was more than 11.35% while the maternal information was more than 2.13%. Conclusion: This molecular study of the population genetic structure of Liangshan pig showed loss of genetic diversity during the closed cross-generation reproduction process. It is necessary to improve the mating plan or introduce new outside blood to ensure long-term preservation of Liangshan pig.