I'm writing a book on R and I need a free software that can take crystal-clear pictures of the screen. I use ScreenHunter, but images are not very sharp.
Hi, I tried processing data in order to get an xgb.DMatrix object, but I ran into difficulties. All examples found in the xgboost package documentation or Xgboost presentation vignette are...
07 August 2018 2,791 6 View
I'm looking for examples and analyses of autocorrelation tests performed on cross-sectional data and the issues encountered (data prop for analysis, problems with estimations, etc). Not interested...
01 February 2016 4,042 2 View
The complete reference is Noether GE: A note on the Kolmogorov-Smirnov statistic in the discrete case. Metrika 7:115-116, 1963'. Basically I'm looking cor citations that prove that...
31 December 2015 7,778 5 View
Except for econometricians, most of us usually have one or more books they refer to when we want to get a first-hand reference on some basic or advanced topics, and/or get some basic understanding...
31 December 2013 2,879 5 View
I need to process some data, nothing fancy, crosstabs, means and medians, and I want to automate it as much as possible. So far I use xtabs and SummaryBy from the doBy library. Do you know if...
04 May 2013 2,008 1 View
The third edition of the Data Science International Summer School will take place during 17-26 July 2020 in Predeal, Romania. The goal of the Summer School is to familiarize students with...
01 January 1970 2,431 2 View
After immunohistochemistry of previously fixed in PFA and EtOH and then frozen 20 μm sections of zebrafish brain, DAPI staining is very weak (right) compared to the same sections stained without...
05 August 2024 9,637 2 View
Hi everyone I need a file with a dirty and clean potato image
04 August 2024 7,199 4 View
I fabricated Ti3C2Tx using concentrated HF 40%, I plot an XRD as attached image below.. please let to know if I obtained it or not.
02 August 2024 6,789 4 View
Does anyone know of a module for the JAMOVI software that is capable of generating mean separations using the classic letters based on post hoc results (e.g., Tukey test)? If, as I believe, such...
31 July 2024 3,333 4 View
My screen printed electrode CV is given here. For Nerstean one electron reaction the delta E value should be close to 57 mV and ration of Ic/Ia should be close to 1. I did CV of my screen printed...
30 July 2024 4,671 3 View
Dear researchers. I tried using the IHC PROFILER in image j to quantify nuclear DAB staining. I followed the instructions in the original article by "Varghese F, Bukhari AB, Malhotra R, De A...
29 July 2024 2,229 0 View
My question pertaining to the DAB staining in cytoplasm of human oral squamous cell carcinoma tissue. When quantifying the epithelial cancer cells do we have to crop remove the stromal tissue?...
29 July 2024 2,682 6 View
In my molecule there is Chloro group at 2-position of phenyl ring, but in 2D image it appears as methyl showing no interaction.
28 July 2024 734 0 View
Hello, I am experiencing an issue with mixing micro powder with resin in a 3D printer. The problem is that sedimentation occurs after a short period (about half an hour to an hour). Could you...
23 July 2024 1,672 0 View
The above are manually labeled extrinsic matrices based on the first image It can be seen that the projection error at the edge is large, while the error at the center is small. What could be the...
23 July 2024 7,479 3 View