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About VPrime

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  1. I've been searching for a database where I can search for a particular code listed by a product's UL certification and I just cannot find anything useful. Does anyone know how to do this?
  2. Blacklisting Noveau does not actually work in this case; tried and tested with power measurements, was still at 10+ watts after other methods attempted
  3. Hello, everyone. I wanted to share my knowledge and experience with the world. In case you are using the Solus (Linux) distribution with a dual GPU computer (and the GPUs happen to be Nvidia and Intel), then you may have noticed that, particularly on laptops, the Nvidia GPU can drain your battery, and you may not have that much use for the graphics power anyway (I certainly did not). The solution that worked for me (despite what forums and Reddit and Fedora people will tell you about Noveau) may be found in the PDF document I have provided (along with all terminal commands and the like). That being said, if you happen to have a machine configuration where this will cause you to brick your machine, please do not blame me. It is done AT YOUR OWN RISK - that being said, if you have time and do not have sensitive data that needs to be backed up on your Solus partition, feel free to experiment - I think this solution will work. Do note: When installing Solus for a dual boot system, it is recommended you disconnect the Windows 10 drive from the system ENTIRELY before installing Solus on a separate drive, because Microsoft has an aggressive partitioning scheme that will spread on multiple disks and cause havoc if not isolated. Do Note: To run Solus in root mode (necessary for procedure), just type "su" in terminal, hit Enter, and then enter admin password. This should work (and it is necessary to do this as sudo does not grant root access by default like other distros). Note on personal experience: It genuinely worked for me. Power was reduced from 11W to about 4.5W on an idle desktop. Google Chrome is a heavy power consumer, and if you can avoid Google Docs, I would recommend using gedit text editor in dark theme to take notes (saves a lot of power to do so). Disabling Nvidia Card and Removing Shutdown Failure.pdf Edit: Idle desktop as in idle desktop on the laptop.
  4. No, this is Maxima. Specifically, wxMaxima (GUI for Maxima).
  5. Hello, everyone. I am trying to get the program wxMaxima to display the actual equation IN THE GRAPHICAL PLOT it produces when you ask it to display an approximated function's graph, given some data. I am doing this so far: (%i1) table: [[10,0.6],[20,0.9],[30,1.1],[40,1.3],[50,1.4]]; (table) [[10,0.6],[20,0.9],[30,1.1],[40,1.3],[50,1.4]] (%i3) plot2d([[discrete, table], 2*%pi*sqrt(L/980)], [L,0,60], [style, points, lines], [color, red, blue], [point_type, asterisk], [legend, "results", "theory"], [xlabel, "L (cm)"], [ylabel, "T (s)"], [y,0,2]); The problem is that the only pages talking about regression/fitted equations only refer to LINEAR regression (handy, but not useful for putting the equation in the plot itself, especially for non linear functions). I want to do this for the sample data above, but the function is not linear. Is this possible? I consulted the Maxima Manual on plotting, and it says nothing about putting regression equations in your plot. Another page in the Manual about statistics doesn't refer to graphical plotting, which is troubling (http://maxima.sourceforge.net/docs/manual/de/maxima_71.html). Can anyone help me out? Function: simple_linear_regression (x) Function: simple_linear_regression (x option) Simple linear regression, y_i=a+b x_i+e_i, where e_i are N(0,sigma) independent random variables. Argument x must be a two column matrix or a list of pairs. Options: 'conflevel, default 95/100, confidence level for the confidence interval; it must be an expression which takes a value in (0,1). 'regressor, default 'x, name of the independent variable. The output of function simple_linear_regression is an inference_result Maxima object with the following results: 'model: the fitted equation. Useful to make new predictions. See examples bellow. 'means: bivariate mean. 'variances: variances of both variables. 'correlation: correlation coefficient. 'adc: adjusted determination coefficient. 'a_estimation: estimation of parameter a. 'a_conf_int: confidence interval of parameter a. 'b_estimation: estimation of parameter b. 'b_conf_int: confidence interval of parameter b. 'hypotheses: null and alternative hypotheses about parameter b. 'statistic: value of the sample statistic used for testing the null hypothesis. 'distribution: distribution of the sample statistic, together with its parameter. 'p_value: p-value of the test about b. 'v_estimation: unbiased variance estimation, or residual variance. 'v_conf_int: variance confidence interval. 'cond_mean_conf_int: confidence interval for the conditioned mean. See examples bellow. 'new_pred_conf_int: confidence interval for a new prediction. See examples bellow. 'residuals: list of pairs (prediction, residual), ordered with respect to predictions. This is useful for goodness of fit analysis. See examples bellow. Only items 1, 4, 14, 9, 10, 11, 12, and 13 above, in this order, are shown by default. The rest remain hidden until the user makes use of functions items_inference and take_inference. Example: Fitting a linear model to a bivariate sample. Input %i4 plots the sample together with the regression line; input %i5 computes y given x=113; the means and the confidence interval for a new prediction when x=113 are also calculated. (%i1) load("stats")$ (%i2) s:[[125,140.7], [130,155.1], [135,160.3], [140,167.2], [145,169.8]]$ (%i3) z:simple_linear_regression(s,conflevel=0.99); | SIMPLE LINEAR REGRESSION | | model = 1.405999999999985 x - 31.18999999999804 | | correlation = .9611685255255155 | | v_estimation = 13.57966666666665 | (%o3) | b_conf_int = [.04469633662525263, 2.767303663374718] | | hypotheses = H0: b = 0 ,H1: b # 0 | | statistic = 6.032686683658114 | | distribution = [student_t, 3] | | p_value = 0.0038059549413203 (%i4) plot2d([[discrete, s], take_inference(model,z)], [x,120,150], [gnuplot_curve_styles, ["with points","with lines"]] )$ (%i5) take_inference(model,z), x=133; (%o5) 155.808 (%i6) take_inference(means,z); (%o6) [135.0, 158.62] (%i7) take_inference(new_pred_conf_int,z), x=133; (%o7) [132.0728595995113, 179.5431404004887]
  6. Hello, everyone! I'm not very well versed on after-market laptop battery upgrades AT ALL and I have no idea what companies or brands to trust, much less if there is even an upgrade for my laptop model's battery. It is a removable battery, but it only has 2,800 mAh capacity, so I was interested in getting a higher mAh count if I can find one. There are websites that offer many models of Acer laptop battery upgrades, but I cannot be sure if they carry a compatible replacement or if they are trustworthy. Can anyone offer guidance in this matter? Thanks!
  7. Solus Linux with the Budgie desktop environment. Hands down the best distro on the market.
  8. VPrime

    Wait for the 11-Series Nvidia cards or buy now?

    Nice Homestarrunner reference in photo
  9. Radeon Instinct cards are set to launch at some point in the near future... and they look pretty badass. Only problem is... they are explicitly meant for non-display applications. As in they have no HDMI output, etc. https://instinct.radeon.com/en-us/product/mi/radeon-instinct-mi25/ THEY LOOK SO COOL. WHY THE HECK DID VEGA NOT COME OUT IN THIS COLOR SCHEME? YELLOW RX OR RIOT. RIP me.
  10. VPrime

    Adobe pulls the plug on Flash. RIP Flash 2000-2020

    I've never experienced a flash ad that hasnt dropped my FPS noticeably anywhere. HTML5 ads are iffy, but Flash always slows me down, and I've got a decently beefy system.
  11. VPrime

    Adobe pulls the plug on Flash. RIP Flash 2000-2020

    GOOD! I hate flash and its incompatibility with ad-blockers and its intense CPU usage and autoplay WITHOUT TERMINATION that stupid ass fresh-outta bootcamp/college developers put on web pages and don't quality test! It would be nice if they made Adobe Creative Cloud non subscription too, next, though...
  12. Well dang. I'd rather not have companies trademark numbers...
  13. I think the courts also said that you cannot trademark numbers. Intel tried to trademark 8086 back in the day, but failed.
  14. As a follow up, the NC State Board of Elections (an agency of NC, because NC Sec of State was mentioned in the lawsuit), issued a QA document on the commission's request. It is available here.