15 Questions 20 Answers 0 Followers
Questions related from Hong Luan Luan
Does it make sense to build a regression model for time series data with breaks? Like the time series I posted below with one major break that mark the shift of time series feature?
10 April 2023 2,714 5 View
I read many LCA reports in which only the emissions from upstream activities producing flows (i.e. Urea flow to plants or fuel flow to run pump) were considered. Is it not necessary to consider...
04 January 2023 368 1 View
Can anyone recommend sources to get data of Carbon stocks (Mton C/ ha) by Landuse and Land-cover types (Forest, Annual crops, Perrenial crops, Shrubs etc..)? Data can be at any scale ranging from...
08 September 2022 9,651 0 View
Are there any universal or national standards for soil and irrigated water quality in organic farming fields? I need those benchmarks to compared to soil and water samples taken in origanic rice...
10 June 2021 7,770 2 View
I have a multivariate time-series dataset of water quality. Some variables have trend, others have not.I want to apply Dynamic Factor Analysis to this dataset to find a latent factor. Question is,...
08 January 2021 3,539 1 View
Can somebody suggest a popular method for clustering multivariate discrete-time time-series data ? My dataset is about water quality parameters taken in 6 stations by seasons in 5 years . Thank...
10 December 2020 7,122 12 View
Does direction of data matter on applying factor analysis like PCA? I have dataset of water quality parameters. Among of those parameter, the DO (Dissolve Oxygen) is inverse to others, i.e. higher...
07 August 2020 7,932 3 View
I am analyzing land-use change in 3 periods. For each period, one land-use map was derived from remote sensing technique along with accuracy of classification. I want to ask if there is any...
24 February 2020 8,250 5 View
Is there any way to calculate the volume of freshwater usage in brackish aquaculture (i.e. shrimp farming) ? If not, is there any research with empirical data about it? I concern about freshwater...
17 December 2019 5,619 4 View
In my study area, the sandy area located near the shores is occupied mainly by water melon crops. I want to ask if there is any other ecosystem services provided by these sandy areas besides...
08 October 2019 9,122 3 View
Are there any documents about how backscatter values are different between polarizations in case of Sentinel1, like what VH can capture but VV misses for instance?
13 August 2019 669 3 View
Can anyone recommend a key paper explaining in detail the method to assess vegitation change using NDVI time series and applying the method into a specific case study? Input data can be Landsat,...
30 November 2018 6,803 6 View
I want to use Mann-Kendall method to detect trends in time series data. Now I have daily flow data from 1996 until recently, the problem is I learned that Mann-Kendall method is not suitable for...
07 May 2018 6,915 4 View
I'm going to analyze the trend of water level and flow discharge using time series data. Can you recommend a good paper or website which focuses on this task? I have no hydrological background so...
06 May 2018 2,247 9 View
Can anybody suggest a robust way to decide the size of moving window to to assess landscape diversity? I have a raster land use map with resolution 10 x 10m. Now I want to calculate diversity...
01 January 1970 10,096 3 View
