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

Has anyone succeeded in capturing uranium atoms in a fullerene structure?

Additional questions are: What are the encapsulating atoms? How difficult was the process and what rates were achieved? What factors most seriously affect the economics?

20 February 2021 3,134 5 View

How to phrase semi-structured interview questions using IPA without biasing superordinate themes?

Hello, I am preparing a semi-structured interview schedule for an interpretative phenomenological analysis study on marginalized individuals' career experiences as impacted by COVID-19. The aim...

19 February 2021 9,099 2 View

No title

19 January 2021 6,848 4 View

Why do my fibroblasts under hypoxia conditions proliferate slower than the same fibroblasts under normoxic conditions?

I am using healthy control lung fibroblasts in a 96 hour experiment with two drugs (nintedanib and Pirfenidone) and vehicle controls for both. I have both hypoxia (approx 1% O2) and normoxia...

12 January 2021 6,260 1 View

How much does radiative heat transfer effect thermal conductivity of materials and how to compare calculations to experirment?

I am calculating the phonon contribution to thermal conductivity for 4 perovskites (BaZrO3, BaSnO3, BaHfO3, and KTaO3) with relatively wide bandgap. When I compare my results for BaZrO3 to the...

27 December 2020 3,232 3 View

Proper method for assessing model invariance following Confirmatory Factor Analysis (CFA) and preceding 2x2 between-subject analysis?

I have produced a good-fitting, reliable baseline model according to CFA. The model contains several factors each loaded by several categorical (ordinal) items. I ultimately intend to analyze the...

15 December 2020 1,668 4 View

How to Reinstall Operating System for a TA Instruments 2910 DSC?

Hard drive crashed on an old windows 2000 that was used to control a TA Instruments 2910 DSC. Installed new hard drive and I am trying to figure out where I can find the software/operating system...

17 November 2020 2,467 3 View

Communities based websites do they serve a purpose?

I'm asking and posing this question as it forms a part of my final project year. I building an ASP.net community-based website coupled with an Oracle database and I'm looking for feedback,...

17 November 2020 7,852 1 View

How can I solve Error: "The coupling service failed to start" during simulation ANSYS 2Way FSI?

Hello, I am dealing with error during lounching 2 Way FSI in ANSYS Workbench. Setup of the Fluent is ok (stand alone I am receiving expected results) and FEM uses Transient Structural. Once I run...

11 November 2020 3,816 4 View

If you haven't computer? how you show the photons to pupils?

Educational Process

01 March 2021 1,827 1 View

Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations?

Dear colleagues, Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations? The question is mainly aimed at adolescents (pupils,...

23 February 2021 7,796 4 View

Can you help me with some books?

My field of research is the philosophy of physics and I look for Petrus Hoenen's books in English or some Romance language (French, Italian or other). This author originally edited in Latin at the...

16 November 2020 3,982 1 View

Which test should I use to test for correlation between an ordinal variable and a continuous/scale variable?

Through content analysis, I gave scores (from -2 to 4) to a number of schools to indicate the level/intensity of restorative justice (RJ) is present in their school policies. To my understanding,...

27 September 2020 396 4 View

Studying science teachers use of plants ?

I would like to study science teachers use of (real) plants in schools for pupils at an age of 10 to 16 years. Therefore I prepared a questionnaire consisting of one page with 7...

30 August 2020 998 5 View

No title

Due to COVID- 19, pupil teacher of teacher training programs are doing school internship in online mode which they are completely opposed to. What do you think as to it will adversely affect their...

09 August 2020 756 20 View

What may be the best title and reference materials for writing an article on "Streaming, pupil subcultures and adaptations"?

I am writing an article on Streaming, pupil subcultures, and adaptations.

24 July 2020 7,316 2 View

How to measure the diameter of a pupil using Infrared Videography?

Hi All I am building a device that measures the diameter and change in diameter of a pupil when subject to a light stimulus. The current setup is an enclosure which resembles a VR Headset, many...

11 June 2020 8,280 1 View

What is some good scholarship on the Roman the patronus ("patron") and their cliens ("client"), as compared/contrasted to practices in Ancient Greeks?

What is some good scholarship on the Roman the patronus ("patron") and their cliens ("client"), as compared/contrasted to practices in Ancient Greeks? And what if any did this factor played in how...

27 March 2020 9,922 2 View

Baselining eye-tracking pupillometric data: am I doing it right?

16 March 2020 4,815 3 View