What statistical analysis method should I use with multivariate categorical data?

Hi, I'm struggling quite a bit, Hope someone can help. My research question is roughly to what extent (and what) characteristics of murder and manslaughter cases are related. The data consists...

05 October 2020 3,958 8 View

What is the most beneficial genomic statistical software you use that is Mac friendly?

I am looking to explore my alignments and tree data more carefully and I was wondering if there was any genomic statistical packages that may give me more inside into the data I generated in the...

15 April 2019 3,561 3 View

Can the promoter for lacZa in a blue/white screening vector, be changed for a constitutive one?

Hi, We have a vector that's got LacZa, driven (as usual) by the Lac promoter, for blue/white screening. We need to change the sequence of the lac promoter (we have another vector, which can't be...

16 February 2018 1,917 5 View

Problems with Bovine Fibrin Clots?

Hi I am using Fibrinogen (10mg/ml) and Thrombin (1000U/ml) to form fibrin clots. I found that after getting good cross linking initially the clots dissolve to liquid if left in incubator...

26 May 2016 9,416 4 View

When I added the interaction terms, the previously identified significant variables became insignificant?

I'm running a logistic regression test. On my first test, I've identified 6/7 significant explanatory variables. I then ran another logistic regression test with all the interaction terms. The...

05 April 2016 7,655 3 View

Anyone have a good methodology for Agar Gel for adding on top of a cell culture dish (and that allows you to pour/pipette as a thin layer)?

07 February 2016 7,189 1 View

For Fibrin Matrices is >2000 NIH/ml best - or can one use 600-2000NIH/ml in order to produce 1000U/ml concentration (Thrombin from Bovine Plasma)?

- used for making matrices to seed neonatal fibroblasts.

02 February 2016 8,338 1 View

What is the ultimate purpose of Ecology, and what do we hope to achieve in advancing the field?

01 February 2016 9,757 25 View

In what way can spirituality be experientially incorporated into Early Years Education in the UK?

21 May 2015 7,674 4 View

How can I find out the interaction of an osteoarthritis patient's DNA with Vitamin B complex?

I have osteoarthritis patient DNA. Now I want to study the interaction of the DNA with Vitamin B complex. What is the procedure to do so? What types of materials and methods are used to study this...

26 November 2014 1,981 2 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

Can I run spearman's correlation on non monotonic data? Is it advisable?

Hi all, I am running a partial correlation analysis on mood data. I want to see if there is a correlation between scores on a novel hypomanic mood scale and existing measures of hypomania - the...

25 February 2021 1,619 3 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View

How to assign two different material/section properties in Abaqus(UMAT)?

Hi everyone, I am conducting a non-linear multi-layer pavement structure analysis which is a stress-dependent. So far, I am able to define the nonlinearity for one soil layer for its resilient...

11 February 2021 9,607 3 View

Are there any exception like work hardening in metals elastic limit due to dynamic loading?

The samples made out of spring steel are taken from same lot. The specimens were shaped following heating to forging temperature - Forming- Hardening -Tempering methods. After storage of almost 6...

11 February 2021 952 6 View