What are the general explanations of change from bimodal to unimodal distribution of a variable in complex adaptive system ?

Let us suppose, we have a time series data of a variable and I am interested in change in the distribution of that variable over two time frames of equal size (long enough to discard pathologies...

04 May 2018 2,344 2 View

What is the effective change point detection technique for identifying the changepoints in a higly skewed data series?

Suppose I want to analyse 100 year of monthly mean flow data of a particular month.

01 February 2016 5,652 2 View

How does the assumption of independent and identically distribution plays a role in obtaining an unbiased estimator?

Suppose I chose samples from a population where the sample are not in the framework of iid ness, does it mean that the sample estimate of the mean will be biased? Here we are thinking of a highly...

01 February 2016 5,222 5 View

Is there any good book or study materials on Applications of Pattern Recognition and Machine Learning in Hydrology and Water Resources Systems?

10 November 2015 2,943 3 View

What are the conditions of using simple water balance equation?

Simple water balance equation, P = E + Q, where change in storage can be considered negligible. Apart from having sufficiently long time series of observation of hydrologic variables like...

11 December 2014 6,894 15 View

Where can I find the good illustration of different downscaling methodologies for precipitation?

I am basically trying to understand different methodologies for common statistical downscaling where it is dicussed in detail.

10 November 2014 6,761 3 View

How to calculate the retrograde series in the sequential Mann Kendall rank test?

It is needed to determine the change point of trend in the streamflow series.

08 September 2014 6,635 1 View

Why water moves in counter clockwise direction vertically through any conduit in Northern Hemisphere, but reverse in Southern Hemisphere?

Actually, I have heard this fact from my friend.

07 August 2014 4,625 2 View

What is the best method for detection of change point in streamflow time series?

Petit test, Double mass curve technique, Mann Kendal Rank Test etc...which is more hydrologically significant technique for change point detection. Please help me.

07 August 2014 6,120 12 View

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 View

How to approach CFD simulation results of a flow past a cylinder?

Hi all, I'm doing a transient simulation of flow past a rectangular cylinder close to the free surface. As far as I'm concerned, the common practice is to discard the initial stages of the...

25 February 2021 1,348 3 View

Is the box plot of climatic indices better illustrate from daily data or annual data?

Hello, I hope you have a good time. I work on a research project about temperature indices. Due to the high number of indices, I only work on tables and maps on an annual time scale. In other...

19 February 2021 9,742 2 View

What are the options for global scale hydrology DEM?

Hello, I am working on a global scale hydrology GIS project delineating global watersheds and doing some data analysis. I have in the past used hydro1K from the USGS that cover the entire world....

18 February 2021 5,109 5 View

How to visualize stress in a coating defined by "Skin" in Abaqus?

Hello All! I'm trying to model a contact between a coated substrate and a tip in Abaqus. The coating is ultra-thin compared to the geometry of the substrate. So I defined the coating using the...

16 February 2021 1,594 3 View

How to perform Cox proportional hazard analysis or Kaplan-meier survival analysis in SPSS?

At first please see the attachment. This experiment was performed for a period of 7 days (n=100). After 7 days, we found different level of survival rate (%) for each treatment. Now, I want to...

15 February 2021 9,145 2 View

How to calculate visual angle of a visual stimulus?

I am currently trying to figure out how to calculate the visual angle of some visual stimuli I used in an experiment. I think I have all of the information I need to calculate this. One is a...

15 February 2021 3,189 2 View

Which DL architecture is better to work on handwritten data?

I am working in the area of Handwriting recognition for Bangla. As there are many DL architecture, I am confused which one to select.

15 February 2021 4,996 1 View

What are the recently methods to estimate low-flow and high-flow time series in ungauged basins?

Hi Is there any new method to estimate ( predict ) low-flow and high-flow regimes in daily scales for ungauged hydrometric stations? Thanks

15 February 2021 3,493 3 View

What is/are the best ML classifier(s) for Sentinel2 images?

Hi I am trying to segment a sentinel2 image. At this stage, I want to run a binary classifier that assigns each pixel to either farm or non-farm pixel. For this purpose, I have 4 10m bands...

15 February 2021 3,596 9 View