How do we fit ARIMA model to data with monotonically increasing trend?

More Arnab N. Patowary's questions See All

What is the term REF referred for renewable energy based power system optimization?

RENEWABLE ENERGY , REF, POWER SYSTEM OPTIMIZATION

25 June 2024 6,630 5 View

Could anyone kindly provide me the data regarding the variation of water flow rate for 24 hour horizon for small hydro power used in multi period OPF?

Optimal power flow, small hydro, water flow rate

20 May 2024 1,091 0 View

Could anyone kindly refer to some papers on the application of optimal power flow considering renewables and battery storage?

Optimal power flow, Wind, PV, battery storage

29 April 2024 1,010 2 View

Today I found a very strange thing in my research gate account..it showing Citations -0..However, I saw more than 150 Citations last week. How to fix?

Today I found a very strange thing in my research gate account..it showing Citations -0..However, I saw more than 150 Citations last week..Dose anyone know how to fix it ??

19 April 2024 1,111 2 View

Dear colleagues, could anyone kindly provide the matlab code for day ahead/24 hour optimal power flow?

Optimal Power Flow, 24 hour, optimization, Matlab

18 April 2024 5,860 4 View

Could anybody suggest me some papers on optimal power flow considering energy storage?

Optimal power flow, Energy storage

05 March 2024 3,203 0 View

Dear Researchers, kindly tell me how to learn python for power system optimisation as I am familiar with matlab program?

Python, Matlab, Power system optimisation

01 January 2024 8,015 2 View

Capacitive reactance Xc =1/2.pi.f.C, produces infinite reactance for freq =0. For dc current f is 0. Then how capacitive reactance allow dc current?

Capacitance, d.c. current, circuit theory.

20 December 2023 5,796 3 View

How to separate chitosan from algae after flocculation?

For biofuel production from microalgae

11 September 2023 8,812 1 View

Why does the optimal power flow problem typically not consider operation, maintenance, or capital cost?

Power System, OPF

02 August 2023 9,227 2 View

How can I prepare virus for a TEM or SEM imaging?

I have virus (viral hemorrhagic septicemia virus) in suspension and the experiment will not involve cells. What level of TCID50 is preferred?

11 August 2024 3,115 1 View

How to learn more about SPSS and its Application?

I would like to learn more about SPSS and Its application especially in regards to data analysis. Please suggest me how I can learn more about it. Thank you so much.

11 August 2024 9,101 4 View

Can I base on reverse DNA sequences to perform alignment, convert to amino acids and GenBank submission?

I have reverse sequences (AB1 format), can I base on reverse DNA sequences to perform nucleotide alignment, convert nucleotides to amino acids and deposit the sequence in GenBank database?

11 August 2024 5,138 1 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 View

Text-Communication from the M1 Hand Area using BCI—and then there is Elon Musk?

Willett, Shenoy et al. (2021) have developed a brain computer interface (BCI) that used neural signal collected from the hand area of the motor cortex (area M1) of a paralyzed patient. The...

10 August 2024 7,180 0 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Has anyone applied Python in the field of textile engineering for data analysis, automation, or smart textiles?

I'm currently exploring the application of Python in textile engineering, specifically in areas like data analysis, process automation, and the development of smart textiles. I'm interested in...

10 August 2024 7,429 2 View

Is it possible to use the Fused Deposition Modeling (FDM) to additively manufacture interconnected porous structure generation of >100-200 micrometer?

Usually, additive manufacturing techniques like SEBM, SLS, and SLM are used for interconnected porous lattice structure generation with sizes of >100–200 micrometers. Can the Fused Deposition...

09 August 2024 7,892 0 View

How can I use the cif data obtained from rietveld refinement extracted via gsas2, for microstructural analysis using ETEX software?

09 August 2024 7,718 0 View

How to define an anisotropic material with asymmetric elastic compliance/stiffness matrix in ANSYS APDL?

I need to model an anisotropic material in which the Poisson's ratio ν_12 ≠ ν_21 and so on. Therefore, the elastic compliance matrix wouldn't be a symmetric one. In ANSYS APDL, for TB,ANEL...

09 August 2024 5,048 2 View

Geoffrey Laird

Hi Arnab,

Have you look at the attached reference ? I believe this is a good start. Notably the Arima and auto.arima function from the R package forecast. The orders of your model will be determined using usual information criteria such as AIC, BIC, etc...

By the way, you do not "erase" a drift by considering 1st difference, see the reference for more details on the equations.

Regards,

Geoffrey

https://robjhyndman.com/hyndsight/arimaconstants/

Arnab N. Patowary

Thank you very much....

Ette Etuk

if after differencing the series the ACF and PACF have no significant correlation it is an indication that p=q=0 in which case the series is white noise.