Two questions about QCA: how to deal with omitted variables and what is the adequate level of solution coverage?

There are two confusions when i apply QCA in my research. 1. how to deal with omitted variables? To my knowledge, most of QCA papers incorporate about 5 to 7 conditions. Too many conditions...

06 July 2019 5,376 9 View

How to define and measure urban innovation?

could anyone suggest some articles about innovativeness of cities? I am working on a paper about the determinants of urban innovation. however, it seems to be a big question that how to define and...

06 July 2017 2,614 6 View

Can anyone tell me how to test unit root of panel data using R?

i am conducting the panel data analysis with R. i use the package 'urca' and 'tseries" to do the unit root test. the result shows that all of variables are stationary,including the GDP. it is...

07 August 2016 2,562 4 View

How to intepret the result of htmt() when Assessing Discriminant Validity using Heterotrait-Monotrait Ratio?

05 June 2016 7,287 1 View

Are there any online courses about panel data analysis using R?

I hope to find some online courses about panel data analysis with R. can anyone give me some suggestions?

05 June 2016 7,583 1 View

Where can i download the package QCA 2.1?

04 May 2016 242 4 View

Could someone recommand me some good review papers about collusion in organizations?

i am reading the works of collusion in organizations. taking Tirole(1986) as a start point, i am try my best to understand the theory of collusion. I wonder if there are any good papers reviewing...

07 August 2015 4,460 5 View

What is the relationship between moral disengagement and rationalization?

when we study the corruption in organization from the social psychology perspective,moral disengagement and rationalization are two key concepts. however, what is their relationship? someone seems...

06 July 2015 9,119 2 View

What are the causes of collusive corruption?

there are many researches working on the causes of corruption. however, there are few works focusing on the collusive corruption, which is a prevalent phenomenon around the world. Could someone...

06 July 2015 2,781 25 View

How do I conduct a confirmatory content analysis?

06 July 2015 1,417 10 View

How to normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View

What are possible instrumental variables for business dynamics (firm entry/exit)?

Dear All, For my paper, I use business dynamics (firm entry/exit rates) as an independent variable in the econometric part. Due to endogeneity I follow a 2SLS approach, for which I need a...

28 February 2021 5,322 3 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View

Bayesian decision trees and bayesian regression trees in Python and/or R?

I am looking for implementation of bayesian decision trees and bayesian regression trees in Python and/or R.. Do you know if the existing libraries support this

23 February 2021 6,689 3 View

How to estimate 2SLS with different instruments for different endogenous variables?

To be specific, I want to conduct an IV regression in stata with the following three equations. EQ1: Y1 ~Y2 Y3 X EQ2: Y2 ~ Z1 EQ3: Y3 ~ Z2 Both Y2 and Y3 are endogenous. However, Z1 and Z2 are...

23 February 2021 6,266 3 View

Are there packages (R or Python) for simple models (bucket?) to assess soil water content?

Hi everyone. I am researching droguht effects on soil water drought. I am looking for already implemented functions in R or Python to estimate soil water content from precipitation,...

21 February 2021 2,084 1 View

ANCOVA controlling baseline in RCT - how to perform power analysis and sample size estimation?

Hi, I have a simple question. I am hoping to perform a power analysis/sample size estimation for an RCT. We will be controlling for baseline symptoms, and using post-treatment or change scores as...

19 February 2021 2,648 23 View

MVN, how to conciliate contradictory results from Multivariate normality and Multivariate outliers test?

Dear colleagues, I'm working with Path analyses in lavaan and MVN packages. There are some results that for me are confusing and features from the MVN that I do not know how to set. My dataset is...

18 February 2021 190 3 View

Would you please recommend a function in R software that could be used with FUNGuild output to merge different rows that have similar guilds?

Dear colleagues, I have an output of FUNGuild tool (ASVs abundance in different samples and assigned to guilds) and would like to merge the ASVs that had similar ecological guilds using R...

16 February 2021 4,292 7 View