What are "virtual measurement" in graph-based SLAM?

Hello, I am studying graph-based SLAM from several papers, I struggle in understanding the concept of a virtual measurement zjk between two nodes xj and xk. I try to explain: SLAM (simultaneous...

02 March 2017 7,121 0 View

Uncertainty on slope and intercept of linear regression?

Hello everybody, Let's copnsider the problem of linear regression, i.e. given a set of values (xk, yk), finding (a,b) that minimize: sum_{k=1}^N (axk+b - yk)2 The solution to this problem leads...

01 February 2017 9,414 4 View

Simple linear PDE - Analytical solution?

Hello, I was trying to solve the following system of PDEs analytically. Though it looks quite simple, I got stuck. Maybe someone can help me? dT1/dx = a * (T2-T1) dT2/dy = b * (T1-T2) with...

08 September 2016 3,932 6 View

Boundary condition for the mass density?

I am simulating the motion of an ideal gas into a closed domain. The governing equations will be the following: 1. Continuity equation 2. Navier-Stokes equation 3. Gas state equation (p = R x rho...

06 July 2016 823 3 View

From making papers to making patents?

Hello everybody, The R&D department of my employer is interested in writing patents. I have an academic background, which means I know to make a new papers. I am referring of the whole process...

07 August 2015 7,720 3 View

Tutorial video tracking algorthm - thermocameras?

Hello, I am looking for a tutorial/survey paper on object tracking algorithms from video sequences. I am interested in algorithms that are suitable for videos acquired form thermo-cameras (e.g no...

06 July 2015 9,973 0 View

How is temporal distance between consecutive zero-crossing distributed in 1D random walk ?

Hello, Let us consider the classic random walk: x0 = 0, xn+1 = xn + rn, where rn are equally distributed zero-mean Gaussian random variables. It is well-known that the probability distribution of...

11 December 2014 6,948 6 View

Elastic catenary - how can the exact equilibrium and oscillation equations be written?

A linear elastic spring is suspended on two extremes and it will stretch under its weight. How can I write down the differential equation for the the equilibrium configuration? And the exact PDE...

08 September 2014 1,362 4 View

Replicator neural network. What's the trick?

I read on the literature that a replicator neural network is a particular feed-forward network which is trained by replicating input data points as desired outputs. This network is claimed to be...

01 January 1970 548 4 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

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

No title

02 March 2021 324 2 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View