Do you know any research on the evolution of educational programming languages?

Hi, as part of my bachelor thesis on the design of programming languages for teaching mathematics in the 21st century, I have planned to discuss the evolution of (the) major programing languages...

02 August 2020 7,922 6 View

How to control the optimization step size in Gaussian?

I would like to perform a geometry optimization for a weakly bound methane dimer structure with Gaussian 16. During this process, the Newton-Raphson step size should be controlled such that its...

09 July 2020 1,956 2 View

Do you know of any true, simulated, or synthesized hexagonal lattice format based [image] data sets?

- E.g., Cherenkov Telescope Array (CTA) images.

24 March 2020 5,221 4 View

How do you identify the complete added mass matrix of a ship using experimental data?

I am looking for a purely experimental method to determine the mass matrix of a ship in three degrees of freedom using manoeuvres in open water. I just found: Skjetne, Smogeli, Fossen: The...

23 March 2020 814 1 View

Statistical test to find out the influence of environmental factors on fish migration numbers?

Hello, I have collected the numbers of migrating fish (round 25 species) for the last 3,5 years every day. I have also collected environmental data like water temperature, water flow, moon phase...

02 January 2020 7,774 4 View

How to deal with non-detects in CT data when performing Delta Delta CT Method?

Input: - RT QPCR dataset row CT values interpolate corrected - 50 target genes - 10 reference genes - 3 different treatments with 3 replicates each - 1 control with 3 replicates Objective: -...

19 August 2019 1,528 3 View

DSC using total enthalpy method - enthalpy of 100% crystalline sample?

Hello, to get an exact result for crystallinity of polymers I want to use the total enthalpy method suggested by Kong and Hay. For doing so one has to calculate the enthalpy of fusion of the 100%...

08 August 2019 9,532 6 View

In time series data, is it sensible to compare the AUC of the extrapolated baseline and observed post-intervention outcomes?

I am (prospectively) evaluating a NHS health board wide quality improvement initiative aiming to reduce exposure to high-risk prescribing. I am expecting a time lag in the intervention effect, but...

26 February 2019 8,944 2 View

How to check if an internal coordinate is totally symmetric with the help of the molecular structure?

I would like to decide whether a given internal coordinate (angle or dihedral angle) is totally symmetric, i.e., E(y1,y2,...,yi+delta,y[3N-5/6])=E(y1,y2,...,yi-delta,y[3N-5/6]) for any delta,...

14 January 2019 2,894 3 View

Knowledge in gas permeation of organic solvents (VOC)?

In general, I am interested in flux/permeability rates of gaseous organic solvents in gas streams. Did anybody measure temperature depend flux, permeate quality and stability values of different...

02 December 2018 2,922 1 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

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 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

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

What test should i use in comparing the correlation between categorical and continuous variables?

Dear all, I have the variable (Surgery duration) represented by values in minutes and the variable (preoperative neuropraxia cases) represented as (Yes/No) values. I want to compare these two...

03 March 2021 5,427 5 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

How to find the mean, SD and CI in SPSS?

Hi, I hope that someone can help me with this task: I have 5 groups of participants which are numbered in SPSS from 1 to 5 (according to their group number) and are all under the variable group....

03 March 2021 506 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

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 View

The procedure compute?

02 March 2021 5,204 3 View