How do we treat zero values in a time series before running Holt Winters Multiplicative model?

I want to understand the functioning of a tool. I've been told that the tool performs multiplicative decomposition of the time series before forecasting. I've managed to decompose the series in R...

02 March 2019 3,430 4 View

I need images of machine parts (automotive industry) to perform damaged parts detection. Please help!!?

Aim is damaged part detection (i.e. scratch, dent, holes, pits, etc.): e.g. Automotive/Industrial part stamping quality inspection, Rolled sheet metal surface inspection, Pit/hole detection in...

04 May 2018 9,257 1 View

Why are graphite-acid intercalation compounds preferred for preparation of exfoliated graphite?

Graphite can be intercalated with a number of compounds including halides, alkali metals, halogens etc. Yet most of the literature points towards use of graphite-acid intercalated compounds.

05 June 2017 8,491 0 View

How does degree of intercalation depend on graphite particle size in liquid intercalation (H2SO4-HNO3)? Can oxidation occur in very fine particles?

I wish to intercalate very fine graphite particles through a mixture of concentrated H2SO4 and HNO3. Normally, small particle size results in greater degree of intercalation. Is it possible for...

04 May 2017 2,747 2 View

Can I perform an electrochemical reaction in parts?

I have a reaction which will most likely take around 10 full days to finish. Since the equipment in my lab can not run for so long continuously, I was wondering if I could perform the reaction in...

02 March 2017 4,671 2 View

Can I use a muffle furnace instead of microwave irradiation for preparation of expandable graphite?

I am trying to prepare expanded graphite. During literature review, I came across heat treatment, ultrasonic irradiation and microwave irradiation as methods of expansion after intercalation. Due...

08 September 2016 6,408 7 View

Calculate value of 'c' parameter for intercalated graphite using XRD data?

01 January 1970 750 4 View

How to prepare graphite electrode from graphite powder, to be used in in electrochemical reaction using aqueous and concentrated H2SO4 electrolytes?

01 January 1970 7,171 3 View

Could you help me with some basic concerns regarding graphite expansion?

Hey there! I am working on non-oxidative intercalation and expansion of graphite using sulfuric acid. I've investigated both electrochemical and liquid intercalation methods using 2*2 cm of...

01 January 1970 8,522 1 View

How to perform XRD of very small graphite sheet sample?

I have a very small sample of graphite sheet (10mg, 36mm2) of which I need to perform XRD. The detected area of the instrument I am using is 6.25cm2. How can I perform XRD of such small sample?...

01 January 1970 5,594 3 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View