Vertical air monitoring and relating with meteorological data ?

I have collected vertical air pollutant samples at three different heights close to the road. Meanwhile I observed meteorological data at one particular point i.e. above the building roof during...

31 December 2018 8,023 2 View

Air pollutant accumulated Filter paper preservation?

Usually the filter papers will be desiccated for 24 hr before and after ambient air pollutant sampling. As we encounter some error in weighing balance, we are unable to weigh the exposed air...

09 October 2018 6,253 6 View

HYSPLIT trajectory for 7days?

I am looking for a tutorial or method discussion on simulating back-trajectory for 7 days in HYSPLIT. I have a knowledge in running multiple locations. Looking for experts help.

07 August 2018 4,940 0 View

What is daytime heating?

01 January 1970 2,823 0 View

How a species with high concentration contributes low % of species contribution and vice versa?

Source: EPA PMF User guide A graph for PM2.5 data was shown in practice exercise. Actually higher the conc. in total species will contribute higher %. How actually is the below condition...

01 January 1970 4,419 2 View

CALMET simulation query?

HiCan we simulate wind speed and temperature profiles for different heights from ground level using CALMET?

01 January 1970 5,972 4 View

How to compare data and show reliability of data?

I have observed PM2.5 and PM10 concentration for a particular site on alternate days for a period of 1 week. I wish to analyse the ratio of pollutants in that specific site. But as the...

01 January 1970 3,684 8 View

What does the grading in whatman filter paper signifies?

I find filter papers with various grades in glass fibre material like GF/A, GF/B, GF/C in whatman make. What does this grading signifies?

01 January 1970 2,922 2 View

How to draw Conditional probability Function (CPF) plot?

On refereeing few literature's, CPF is used to interpret the air pollutant concentration and wind direction to predict the source path to the receptor point. The formula with description contained...

01 January 1970 4,324 2 View

Tutorials for practicing HYSPLIT model?

I am doing my research on vertical atmospheric pollutant modelling near and far coastal area. In this regard to study the vertical wind profile I have decided to use HYSPLIT model. But I couldn't...

01 January 1970 3,242 7 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

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View