DEM of Asphalt ? - FAQS.TIPS

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When conducting a waste assessment questionnaire are there pre-determined questions or should we create them as we like?

07 May 2024 4,279 2 View

Variables with different likert scales?

Scenario - There is an IV and DV. IV is measured in 5 point likert scale questions and DV is measured in 7 point likert scale questions. Doubts - 01. Can we run a test like regression analysis...

29 November 2023 4,999 6 View

How to extract intense rainfalls (e.g., annual maximum rainfall for 24-hr duration) from the historical records of daily rainfalls?

Generally, the daily rainfalls are recorded at fixed time intervals (e.g., from 9 am to 9 am). We can find such records of historical rainfalls for centuries. However, in such records, even the...

20 November 2023 5,759 2 View

What are the criteria to be adopted in sizing the gates of salinity barriers constructed across the rivers drain flood prone areas?

I have a problem of designing a salinity barrier on a river flowing through a large agricultural area, susceptible for flooding, to prevent saltwater intrusion to domestic water supply intakes....

02 November 2023 2,087 0 View

Univariate Vs Multivariate Outliers?

There is a common understanding that, in many cases, the absence of extreme values (univariate outliers) in individual variables may reduce the likelihood of extreme values when considering...

03 October 2023 446 10 View

Parametric Assumptions in the presence of mediator or moderator?

In a causal model (such as multiple IVs and single DV) with presence of a mediator or moderator, do we have to consider such mediator or moderator when assessing the parametric assumptions or do...

25 September 2023 3,241 3 View

What is the real cause behind the failure of ‘Yala’ (2023) cultivation under the 'Udawalawa' Scheme? Drought, wrong decision or some other?

This question is mainly targeted to Sri Lankan Engineers, Meteorologists, Agronomists and Lawyers. Even the foreign researchers and consultants who familiar with the system (‘Udawalawa’ &...

06 September 2023 8,987 0 View

What are the adverse effects of using freshwater reservoirs for generating solar energy?

Mine is a tropical country which has developed freshwater reservoirs in different eras of the history (new and ancient), mainly for the purpose of irrigation and hydropower. Those reservoirs are...

26 August 2023 5,463 1 View

What are the laws and regulations available for securing riparian rights of water in river systems and priority order of water using activities?

Udawalawa is a large reservoir constructed in 1960s, mainly for the purpose of irrigation. Later, around 1990s, hydropower reservoir was constructed at the upstream of the same catchment...

11 August 2023 3,799 2 View

Any idea for a BSc Computer Science/ Software Engineering student for the final year research?

As a CS/SE student currently I'm finding an area for research. Currently my idea was to investigate more about recommendation systems using ML and deep Learning, but with the timeline to complete...

06 August 2023 3,862 3 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

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

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 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

How can I apply boundary conditions in an orthotropic steel deck numerical model using ABAQUS software?

I am trying to simulate vehicular loading on an orthotopic steel deck bridge section in ABAQUS software. The red arrow mark in the attached figure indicates the direction in which the vehicle will...

08 August 2024 719 0 View

How are iso-frequency contours plotted?

Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...

07 August 2024 1,937 1 View

Should I include H atom into C3N5 when i am doing DFT modelling?

Hi all, my experimental XPS results shown that my C3N5 sample consists of N-H bond, hence in this case I should incorporate the N-H bond into my DFT modelling. However, I do notice several papers...

07 August 2024 8,414 2 View

Can you suggest reliable sources defining "3D mesh" and "3D city models"?

Dear fellow researchers, I am currently working on a paper where I need to provide a reliable reference that defines and distinguishes between 3D mesh models and 3D city models. Although I am...

06 August 2024 9,986 2 View

Please explain how the plastic input value should be considered from the true stress-strain curve for the bilinear elastoplastic material model ?

I am working on Abaqus/Explicit(Quasistatic ) for the deformation of the auxetic structure model. Please explain how the plastic input value should be considered from the true stress-strain curve...

05 August 2024 454 3 View

What are the shear and normal stiffness values of an LLDPE liner in 3D numerical modeling of a stockpile?

I am seeking experimental or applicable data for the liner (LLDPE) interface in FLAC3D numerical modeling of a large stockpile. Could you please recommend suitable references? The preferred data...

05 August 2024 3,665 0 View