Data Definition and 998 Threads

Is it possible for a USB A 3.0 Female to Micro B Male OTG adapter to transfer data from the USB 3.0 source to the Micro B source at 5gbps speeds, and can the Micro B receive and process all of that data from it's Micro B port? Here's a link to the device, and a picture from it that claims this...

Hello! I have some data (counts) with a Poisson error associated to it and I want to make a fit to the data. I am trying to weight the data inversely proportional to the errors, such that the data points with high errors are less important for the fit. However, using the the error on its own...

I visited a friend who has a very nice solar installation. He also has the software to do data collection and presentation. I thought it would be nice to share some of his data here. Perhaps we can link to this post as a reference in future solar discussions. First, some background. The...

Hello! I have some data in which the dependent variable ##y## has, for each data point, an error bar associated with it ##\delta y##. The errors are almost identical for each datapoint, so doing a weighted fit in terms of the errors would not change the results significantly. How can I take the...

Hello! I am working on a spectroscopy experiment and for each wavelength of a laser I have some counts. For the purpose of my question I will make up some data to illustrate my problem, in the table below (these are just numbers, without any relevance for the physical reality of the experiment)...

Hi all. Let's assume I have a situation as following. I have a set of x values containing 10 data points. I also got the corresponding measurement values for that each x data points, as y values, and the error on them. Then, I perform calculations, with let's say 5 different models, in where I...

Hello, From wikipedia, this is the partition function for a "classical continuous system": This is the pillar of classical statistical physics, but it can be seen as a mere kind of "mathematical transform" . It can be used even without thinking to statistics or temperature. If we focus only...

In this video about digging hole into Earth's crust it is said that humans have only reached 12 km depth(Kola Superdeep Borehole). Then how are we able to know the composition of Earth's crust, density of innermost core, physical state of the matter. Where are we getting our data from And how...

image_data = fits.getdata(alma_image, ext=0) plt.figure() plt.imshow(image_data, cmap='viridis', vmin=-4, vmax=4) plt.xlim(540,640) plt.ylim(540,640) plt.colorbar(extend='both') plt.clim(0, 1) plt.show()

Good Day, I am trying to pick up small ferro (Neodynium)) magnets vertically with a solenoid. I want to know how much magnetic force the solenoid can pick up. The formula I tested and actual numbers for my solenoid are in the image below. I know that the magnetic field of a solenoid is given...

the text file of the data. 0 0 1 0.069478 2 0.137694 3 0.204332 4 0.269083 5 0.331656 6 0.391771 7 0.449167 8 0.503598 9 0.554835 10 0.602670 11 0.646912 12 0.687392 13 0.723961 14 0.756491...

(As a quick note, 'wave flume' should be taken rather generally. I basically just mean the sort of experiments involved in the flow of water which may use instruments such as pressure gauges, load cells, wave gauges, and ADVs. I know that they're not always done in a flume per say -- the...

This is a locked laptop,in order for it to work again,i need to install a new OS , i am going to remove the hard disk of the computer and extract data on other devices. My friend told me that this is ok, but I am worried that the data saved on the hard disk of the computer will be lost. Maybe...

Hi! I'm working on MATLAB code to analyze dat for a specific project, but I'm curious if it could made useful for more general purposes. Here's a bit of background on the project: I'm an REU student and I was assigned to analyze data for a recently conducted experiment. The experiment took...

The test data and notes are attached - showing that the inverse square calculations fail to reasonably predict the actual dimming of light over a test distance of 168 mm. Did I err in my test design or my calculations?

I've read quantum quests data structures bible but I'm still confused. I need help in simplest terms understanding what an ADT actually is and how it's different from a data structure. So a data structure is a way of organizing data. I can understand why a stack, or a queue would fall under...

In general the probability of getteing at least one type I error is P=1-(1-a)^m. With m being the number of tests and a the probabiliy of getting a type I error. But i do not know how to get an expression with m0

Part of the discussion on flow charts drifted towards the use of that corner cut on the old IBM cards - enough so, that I have created this new thread. @sysprog provided this information: The conversation diverged at about this post: I noted that the card readers - including such machines...

Hi, a newbie to the site and hoping someone can help. Its been a long time since I studied physics or math at school. I am having some difficulty calculating the angular velocity of the arm trhough a partial movement (phase). The data set I have separates the angular velocity into the three...

Just read an interesting article that profiled several physicists who made the transition into data science. For anyone who's interested... https://www.symmetrymagazine.org/article/from-physics-to-data-science?fbclid=IwAR2geBOy4X8ar2Bax27XC-1n74wamzg3ByBIa658urBbKIdQK_OX--LXvIg

Data = np.array([-1.61032636, -1.23577245, -0.50587484, -0.28348457, -0.18748945, 0.4537447, 1.2338455, 2.13535718]) print("Data is: ", Data) print(Data.shape) n,bins,patches = plt.hist(Data,bins=4) print("n: ",n) print("bins: ",bins) plt.savefig("./DOS")

Hello. I have three questions about a claim made by Stephen Hawking in his book, 'My Brief History' and I would be grateful to receive some help concerning it please. Here is a .pdf version of it...

I thought this may help with the frustration many of us feel: https://duckduckgo.com/?q=How+to++data+mine+your+mailbox&atb=v88-1&ia=web Save them all to a Spam folder and mine the data there. I will try at when I get a chance and follow up on it. I think @jim hardy will like it in...

Let, alpha <- c(1, 1) / 2 mat <- matrix(c(1 / 2, 0, 1 / 2, 1), nrow = 2, ncol = 2) chainSim <- function(alpha, mat, n) { out <- numeric(n) out[1] <- sample(1:2, 1, prob = alpha) for(i in 2:n) out[i] <- sample(1:2, 1, prob = mat[out[i - 1], ])...

Suppose, I have a Markov Chain as follows: ##S=\{1, 2\}## ## \alpha = \begin{bmatrix} 0.5&0.5\end{bmatrix} ## ## P = \begin{bmatrix} 0.5&0.5\\ 0&1 \end{bmatrix} ## And, the following data regarding 5 steps of Markov Chain taken 12 times: Steps 1 2 3 4 5...

For all the astronomers and astrophysicists out there, what are your preferred methods of dealing with large swaths of data? What are your go to programming languages, and software?

Hey. I am running regression on panel data. I test different approaches using Stata. When using "population-averaged" no squared R measures are reported. The approach is equal to running a regular linear regression on the panel data, and according to my professor, a squared R is statistically...

Hi. My question is for now why the equation of x as a function of time for phase of motion ab is ##x=50t-375##? Shouldn't that be ##x=375+50t##?

I am working with a simulation which generates an arbitrary number ##n## of identical curves with different phases and calculates their (normalized) sum. As expected, the fluctuation depth of the curves decreases as we increase ##n##. Here is an example of my simulation (when ##n>1##, the...

I have a project to create a program to predict tsunami possibility by gathering data and finding pattern from previous earthquakes. It would be using neural network. But I don't really know what I should consider from the data. Is it the magnitude that cause the tsunami? Or is it the depth...

I don't think there is a thread on this? R Gusten et al, Nature, 2019, DOI: 10.1038/s41586-019-1090-x

Could someone please suggest types of data loggers that can be used to log 3 Phase parameters on the Low Voltage side of a transformer. Thanks

Hello, My question is what types of data analysis can I perform on a set of theoretical and experimental results? For example, I have v(x) = cos(x) and I plot my observed data to v(x). Thanks!

First of all: I am not a programmer, I cannot read code, only have a background in pure mathematics, am looking for a very simplified summary ("for Dummies") of the way Deep Learning and similar AI routines handle sensor data. I looked at a few articles such as...

Hi all, I bought a new ASUS Android recently and it is just eating up data like crazy; some 1.4 GB in around a week. Hotspot and Tethering alone has used up around 1GB in around a week. I selected data savings option and disabling access by background process but this seems extreme. Any advice?

Why do short wavelengths carry a huge amount of data not long? I think this is because short wavelengths are faster o_O

I am fascinated with data compression, and for the past 7 years i have been trying to create an algorithm that can compress information almost infinitely let's say for example 1GB of information into 1KB of information, and while impossible that sounds after 7 years working at that problem 16...

Homework Statement I have successfully opened and discarded the headers. Then I calculated the distances between point 1 and others and the minimum distance as well. However, I am not sure how to make the code work for more than 4 points. The attached text file is what I am trying to read and...

Hi I have the educational background to do a few jobs I have seen posted as "data scientist" or "data engineer". However, I keep getting told that to get a job like that with my background, in mathematics, I need to post code examples on Github. However, I always feel like my ideas are either...

The problem says: A radio station emits electromagnetic wave with a frequency of 100MHz (102*106 Hz). a)What's the energy of this radiation's/glow's photon? (Solved, i found 6,63*10-26 J) b)Compare your calculation with the energy of another visible radiation/glow, with a wavelength of 600nm...

I am looking for the measurement data for distant objects (e.g. type Ia supernovae) The red shift and the luminosity flux data. What time interval is used in the luminosity flux measurement? What formula is used for the luminosity distance calculation?

Homework Statement I have made a number of measurements of current against optical power for a given laser. As shown below, my measurements only go up to 8 amps. I am trying to use the data to predict the output power at 9 amps. In the ideal case, the behaviour is expected to be linear, but...

Hi, I have measured a sample and realized there is a frozen field that remained in the SQUID magnetometer before the MvsH measurements were taken. I am fairly new to using the SQUID, I have plotted the data and if I multiply the applied field by a factor of 0.75 the data matches what I...

Simple linear regression statistics: If I have a linear relation (or wish to prove such a relation): y = k x where k = constant. I have a set of n experimental data points ...(y0, x0), (y1, x1)... measured with some error estimates. Is there some way to present how well the n data points shows...

Hey, I'm interested in temperature recordings for the last 10 years but also for an estimate in the last billion years, this for hobby and fun. There are a lot of public sources but problem is many sites are torn down and others are created, so I feel very in the wild, it's like finding a tree...

I have experimental spectrum in which y-axis is intensity values, and x-axis is frequency values. Int - array of experimental intensities (y-axis). w - array of frequencies (x-axis). I know the view of theoretical function that must describe the obtained spectrum. I explicitly set the function...

Is it possible to use probit or logit models on panel data? Mons

<Moderator's note: Moved from a homework forum.> Mass (g) +/- 0.01 grams Drop height (centimeters) +/- 3.00 Shell 53.47 45 No crack 56.78 45 Cracked...

I've been logging daily temperature and humidity data for two years now. In the end of each year I will put a graph like this Those are daily minimum and maximum temperatures. But I was wondering, if all this has any scientific value at all. I've been using WS2300 weather station for these...

Does anyone know a model to identify Straight Compact Linear data? I've been toying with Pearson Correlation Coefficient and am very disappointed. https://en.wikipedia.org/wiki/Pearson_correlation_coefficient I originally thought that this would be exactly what I needed, but... After some...