15 Questions 23 Answers 0 Followers
Questions related from Samaneh H.Bahreini
Hi, I have a question about emission factors for passenger cars based on the EMEP/EEA air pollutant emission inventory guidebook 2023, in the link that I used to calculate the CO2 emission per...
05 July 2024 1,717 2 View
Hi, I have a question about in-text citations, I have read different answers and want to be sure about it, when I paraphrase a text from paper A, I should cite the author, if there is a reference...
05 May 2023 3,525 0 View
Hi, I have a question about the calculation of the CO2 of private transportation. I have a dataset of the households with the number/make/model/age/fuel type, and engine size of the vehicles that...
23 February 2023 8,846 5 View
Hi, I have a continuous variable in my dataset with this distribution: summary(emissions$NOX_gram) Min. 1st Qu. Median Mean 3rd Qu. Max. 0 256 547 15802...
01 December 2022 3,292 0 View
Hi, I calculated emissions of NO2, PM2.5, CO, NOX, NMVOC, and NH3 based on the Tier 2 methodology of EMEP/EEA air pollutant emission inventory guidebook 2019 – Update Oct. 2021. I used emission...
26 November 2022 8,689 1 View
Hello, I have a question about the multiple regression model. I want to fit a multiple regression model on a dataset in which the dependent variable is continuous and all of the independent...
25 November 2022 5,092 27 View
Hello, I have a question about emission calculation. I have a dataset of households consisting of socio-economics and characteristics of the private cars like make/model/age/fuel type/engine size...
25 November 2022 4,369 1 View
Hi, I have a large data set of vehicles, I have make/model/age/fule for each vehicle. I need engine capacity( displacement) to be able to categorize my data into for example mini/small/large...
16 June 2022 2,431 2 View
Hi, I have a technical question about the cars, In my dataset, I have the make/model/age/fuel of vehicles, what I need is the engine capacity of cars. I need to categorize them based on engine...
30 April 2022 7,639 2 View
Hi, I fitted a multinomial logistic model on my data, now I want to do sensitivity analysis in R, for example, how do change in household income, both a 25% decrease (reflecting a possible...
25 December 2021 2,742 0 View
how can i copy a process from ecoinvent database to my project? I want to change the input of a process and not change the main database, that is why I want to copy it; is it possible?
07 December 2021 6,086 3 View
Hi, I have a question about multicollinearity in multinomial logistic regression. I used VIF function and though I have intercept in my model, i received this warning: In vif....
01 December 2021 9,543 3 View
Hi, I have questions about model selection. I fitted ordered logit, poisson and multinomial logit models on my data to choose one of them. 1) should i consider the number of significant...
23 November 2021 915 5 View
Hello, in my dataset some of the categorical data have 18 or more levels? i want to ask can i merge them based on their frequency? or should i keep them in the model as they are? and at what...
02 November 2021 8,029 21 View
I want to run a multinational logit model on my survey data which has a column for individual weighting. My model is on household level and i used package nnet and multinom function in R, How...
07 June 2021 6,639 3 View
