Has anyone used an ordinal logistic regression model in Periodontitis using the CDC-AAP Case Definition?

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Photoionisation cross section of (singly) excited Helium?

Hello, I am searching the photoionisation cross section of (singly) excited Helium (1s2s as well as 1s3s). I only find either neutral Helium or doubly excited Helium. If someone could provide...

17 November 2020 7,096 3 View

If the daily (hourly) concentration of PM2.5 is not Gaussian. Is correct apply an arithmetic mean in epidemiological studies for risk assessment?

The distribution of daily PM2.5 concentration (hourly) is bimodal in the city of Coyhaique (South of Chile). Coyhaique is the city more polluted by particulate matter accord the WHO. The major...

11 October 2020 2,006 3 View

How would a 'fair trade' version of a marketplace app like Uber Eats work?

(Note: ResearchGate questions does not have any comments feature. I am unable to directly respond to individual answers below because there is no commenting feature available. Please do not ask...

23 September 2020 5,727 2 View

Which scholars, pedagogues, and projects are carrying forward the legacy of arts educator Elliot Eisner (1933-2014)?

13 September 2020 3,664 4 View

Residual stresses of heat-soaked hot bent glass - are they different from flat glass?

Usually, during the structural design of flat glass, one does not need to take into account the effects of changes from residual stresses. Question: How to understand and predict the residual...

15 March 2020 681 5 View

Structural steel design - Effective length of a fillet weld according to EN 1993-1-8, 4.5.1 (1) unclear in definition?

In contrast to the older German steel code DIN 18800-1, the Eurocode for steel design defines an effective length of a fillet weld as follows (no sketch is provided in the Eurocode): "The...

12 December 2019 592 5 View

How is the deflection of aluminum frame structures influenced by the stiffness of corner cleats and the fitting tolerance?

How is the deflection of aluminum frame structures influenced by the stiffness of corner cleats and the fitting tolerance? Explanation: An ( orthogonal ) corner where two (extruded) aluminum...

05 June 2019 2,194 5 View

Raman spectra of Melanoidins ?

Hi there, we failed to measure Raman spectra of dark products of the Maillard reaction for several times. In fact fluorescence seems to be a problem even when working with 1064 nm. In addition...

05 June 2018 4,890 7 View

Are there proofs that interest in sustainability is correlated with research based learning ?

Actually we have a lot of discussions how research based learning pushes the interest in sustainability. In our project laboratory of chemistry it seems as if the students are activated to get...

05 June 2018 1,430 6 View

Outcome and competence level achieved by digital teaching ?

Hi, actually we have a strong discussion going on, if learning outcomes and competence levels rise when applying digital elements in the classroom. It seems that any approach is biased because...

05 June 2018 3,734 3 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

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 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

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 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