In meta-analysis of binary outcomes, what should we do when the occurrence of outcome is zero in both groups?

In conducting meta-analysis of binary outcomes (in RCTs), in case the risk ratio has not been reported, what should we do with the studies that the number of outcomes occurrence is zero in both...

09 January 2021 2,802 5 View

How to calculate ratio of means and ratio of geometric means?

In conducting a meta-analysis, sometimes, some studies have reported geometric mean, while others have reported arithmetic mean. One solution for pooling these studies is calculating the ratio of...

11 December 2020 4,663 3 View

Is (Are) there any valid corpus containing geographical events queries?

Hi all, I'm currently looking for a question corpus to have a plausible number of spatial events queries. I found MS MARCO dataset in which I could extract a reasonable number of geographical...

08 December 2020 7,844 2 View

Do I have to assume sphericity or not when conducting two way repeated measures ANOVA in graphpad prism 8?

I am analyzing data obtained from a crossover study conducted on same animals evaluating the effect of two different anesthetic drugs on heart rate, respiratory rate, pulse oximetry, rectal...

28 September 2020 6,408 4 View

How to interpret arima model with regressors in r?

Hi there; I need to produce such an equation for a time series using arima model: y(t) = y(t-1) + a*x(t) + b*x(t-1) I know if I use for example arima (1,0,0) with x as the exogenous...

07 August 2020 7,438 6 View

Why some use seasonal ARIMA(p,d,q) (P,D, Q) instead of SARIMA?

Hello everyone. I am trying to use ARIMA model for a time series with seasonality. As I am new to this topic, I use the internet as my guide. My question is why anyone should use Seasonal ARIMA...

05 August 2020 219 4 View

How can I add stations to HBV-Light model?

Hi everyone. I've been using the original HBV model, so far. I might need to change it to HBV-light. Does anybody know how to add stations to HBV-light software? I can see there is this...

01 April 2020 1,032 7 View

How to define the parameters of Spatio-Temporal variogram models?

Hi everyone; I have a question regarding the parameters of variogram modelling. Does anyone know how to choose parameters such as Sill, Range and ... for the time, space and joint components of a...

10 February 2020 2,381 6 View

How to change tunit in VariogramST (R)?

Hi there, I am trying to use VariogramST function in R, for spatial-temporal kriging. The values I am working on, are monthly based; while in the function VariogramST, the predefined "tunit" is...

27 January 2020 5,986 3 View

The effect of number of antennas in multistatic architecture for imaging and SNR?

I believe by using greater number of antennas in simulation, SNR would also be improved. However I have no proof for that. Are there any equations that support my idea?

25 September 2019 4,890 3 View

How to perform EEG classification of Alzheimer and control groups?

I am doing a project on classification of EEG signals of Alzheimer's disease and control groups. Previously, I extracted the alpha power of the EEG signals and found out the strengths. I want a...

18 February 2021 8,502 2 View

Does anyone have a stack of images of action potentials or abnormal brain scans?

I need a stack of black and white .jpeg/.tiff/.jpg/.png images across time of either action potentials, neurons firing, or brain scans (comparing disease and normal brain, disease progression,...

09 February 2021 2,648 3 View

For PC-3 cell line. How long before irradiation do I have to synchronize my cells to G0/G1?

I am trying to do a clonogenic assay for PC-3 after irradiation. I have to synchronize my cells by serum starvation but there's a optimal time I have to do that before irradiation. been looking in...

09 February 2021 9,480 1 View

Grid connected inverter using virtual synchronous machine?

Hi everybody, currently, I am working on the grid-connected inverter. I want to make my grid-connected PV system a PLL-less system. I have studied some reachers are implementing a virtual...

07 February 2021 6,078 2 View

Patients with chronic kidney disease could get COVID-19 vaccine?

04 February 2021 278 4 View

How can you accurately induce calcium overload and measure membrane potential in cultured Tg2576 neuronal cells using whole cell patch clamp method?

Hi there, I'm currently working on a project where i need to design an experiment but as i have little to no experience with this level of experimental design and no face to face help i am really...

22 January 2021 6,728 3 View

Where can I get a Music therapy database for Alzheimer's Disease?

I am working on the effect of music therapy on persons with Alzheimer's Disease. I require EEG signals of healthy individuals and people with Alzheimer's Disease/Dementia that have undergone music...

22 January 2021 8,613 5 View

What is the best nanoparticles that can be easily prepared & can be used in silencing the BACE1 gene for prevention of Alzheimer disease?

I want to do a research about the nanotechnology and management of Alzheimer. I found a lot of ideas about nanoparticles that already studied in that field but I do not know which of them is the...

20 January 2021 1,052 3 View

What is role of chronopharmacology or circadian rhythms in metabolic diseases including obesity, diabetes and cardiovascular diseases?

Chronopharmacology is branch of biological science which deals with daily life, sleep and wake, day and night, feeding and fasting and other effects. we can manage many diseases including...

18 January 2021 9,045 3 View

Is there no general protocol for vaccination study?

Hi, I searched vaccination study to know which MLD50 is suitable for influenza virus study in pubmed. But why every vaccination and challenge conditions are different? Is there no guideline or...

16 January 2021 7,984 3 View