Pleas can i use GMM for time series data of 42 observation, just studying one country?

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Can someone please explain the details of voltage and frequency controller configurations for this wind turbine system operation at higher wind speed?

So imagine modelling a viable design of a fixed-speed wind energy conversion system (WECS) for remotely located geographical areas without grid connection using Simulink. The 3-phase WECS should...

29 November 2022 326 1 View

Is it possible for me to use two non-probability sampling methods in my research?

I'm currently working on a research project where I need to get some data from athletes, coach and sport officials.

01 September 2021 1,542 8 View

the list of all accounting thories?

accounting theories like positive accounting theory, agency theory, behavioral accounting theory

10 April 2018 4,833 11 View

Which enzyme is best to amplify a 3.8kb GC rich viral DNA?

I want to amplify a 3.8kb GC rich DNA for sequencing and cloning. I need a polymerase enzyme that will do a good job. Please help.

31 October 2016 7,996 5 View

Stab culture medium preparation using LB agar?

I like to preserve some bacteria culture using stab culture technique but I like to know if I need to add more sodium chloride to my normal LB broth which contains 5g/L of sodium chloride

31 August 2016 7,401 3 View

Self ligation of a linearized vector?

I used a TOPO TA kit which contained a linearized vector of 3.9kb to ligate my DNA of about 3.8kb. After transformation and plating on LB agar containing X-GAL I got quite a number of white...

06 August 2016 9,959 3 View

Is there an easy method or procedure that can be used to measure vitellogenin biomarker in blood serum of freshwater fishes in african surface waters?

assessment of endocrine disruption in fishes

21 September 2014 8,397 1 View

Bimodal Distribution, Split or Transform for ANOVA?

Hi, I have some experiments where different nutrients/fertilisers (including but not limited to N) were applied to plants. Unsurprisingly the data produced is bimodal. The populations are...

18 July 2024 7,305 1 View

Why do most people use GMM in analysis that focus on Africa?

I want to understand why most analyses conducted in Africa use GMM instead of other panel data estimation techniques.

16 April 2024 5,322 3 View

How could we implement -xthenreg (GMM threshold) with robust errors (Stata14)?

Could you please clarify how to add robust (white) errors to the function -xthenreg in Stata14? I am running Threshold GMM Estimator (Seo and Shin (2016)) for my panel (N=60, T=28). Commands such...

03 April 2024 8,500 1 View

How can we write the system GMM model (mathematical equation)?

20 March 2024 5,609 1 View

How to Interpret Validity of GMM Model Specification - Valid at Subsample Levels?

I am currently conducting research on the influence of budget revisions on budget absorption in government units. The estimation method I am using is the system GMM, with approximately 15,000...

19 March 2024 5,579 0 View

Can, please, someone share step wise procedure to run GMM, first difference GMM, two step difference GMM and two stage GMM on Panel data IN STATA?

Also, how we can understand we have to for GMM model for our data? why do we go for different GMM models when there are random and fixed effect methods that can be decided by the Hausman test and...

09 January 2024 4,622 4 View

Steps for running GMM during Analysis?

Help is requested.

17 October 2023 9,632 0 View

What to do if you can't perform the AR(2) Arellano-Bond test in system GMM because of insufficient time periods (T=3)?

I am estimating a system GMM model with N=5000 and T=4. One time period is lost due to the dependent lagged variable, and so, in practice, T=3. The Arellano-Bond test for serial correlation needs...

13 October 2023 9,046 0 View

Le fait de ne pas rejeter le test d'Arellano-Bond pour AR(1) impactent les estimations ?

. xtabond2 IndicedeTheil PIBparhabitantUSconstants InflationdéflateurduPIBa ITC Créditintérieurfourniausecte, gmm( IndicedeThei > l, lag(2 4)collapse) iv( PIBparhabitantUSconstants...

23 August 2023 5,900 1 View

Large N and large T panel analysis, which method to use ?

Hello, I am using panel data with N= 37 (countries) and T= 31 (1990 to 2020). After reading about literature of dynamic panel methods, I found that when T is small and N is large, it's better to...

04 August 2023 8,529 2 View