Improvements in the logistic regression module: (1) improved numerical stability (in particular for lognormal distributed covariates) (2) additional validity checks for input parameters (this applies also to the poisson regression module) (3) in sensitivity analyses the handling of cases in which the power does not increase monotonically with effect size is improved: an additional Actual power output field has been added a deviation of this actual power value from the one requested on the input side indicates such cases it is recommended that you check how the power depends on the effect size in the plot window. 31 January 2014 - Release 3.1.8 Mac and Windows Note, however, that the change affects the results only when N is very small. Negative effect directions, that is, slope|H1 = upper limit. 6 February 2019 - Release 3.1.9.4 Mac and Windowsįixed a bug in t tests: Linear bivariate regression: One group, size of slope. 14 January 2020 - Release 3.1.9.5 Macįixed a bug that caused the “Options” button (which is available for some tests in the main window) to disappear when “Hide distributions & control” was selected. 21 February 2020 - Release 3.1.9.6 Mac and Windowsįixed a bug in z tests: Generic z test: Analysis: Criterion: Compute alpha: The critical z was calculated incorrectly.įixed a bug in t tests: Linear bivariate regression: One group, size of slope: |sy/sx| was sometimes calculated inccorrecty. Moreover, if you sit at the back of the car and you aren't constrained by a seat belt, you will fly straight ahead like a boulder of several tonnes.Changed the behavior of the “X-Y plot for a range of values” which allowed plotting graphs after changing input parameters in the main window without hitting the “Calculate” button which, however, is required to update the “X-Y plot for a range of values” with the new input parameters from the main dialog. You simply won't be able to hold on and prevent injury without fastened seat belts. If you crash with a heavy truck, it doesn't matter whether you sit behind the wheel or at the back seat of the car.Įven in low-speed collisions, the impact force which stops your body is in the range of tonnes. We have made an example with the driver, but any person in the vehicle is subjected to these dangers. Usually, there are still airbags placed in front of the driver in order to increase their safety. However, nowadays, seat belts have a mechanism that breaks them at a predefined level of stress. The seat belt could occasionally contribute to severe internal injury or even death if the impact force is too big. To sum up, the seat belt is designed to stop your body from hitting hard things in the car and reduce the impact force you experience by spreading it out over time. What happens if you drive at a speed of 20 m p h 20\ \mathrm 48 ms, and now, the driver decelerates "only" 18 times faster than with Earth's standard gravity g. We can't precisely calculate whether you will survive or not, but we can make some estimations to be aware of crash consequences. ![]() Obstacle – the situation is different when we hit a bush or a tree.Car type – you are more likely to survive a car crash if you're in a bigger car and.Airbag – another thing that can protect your life.Seat belt – we will show that seat belts can save your life.Car speed – the higher the speed, the more energy you have. ![]() The damages to health in an accident can be severe, and they depend on many factors, e.g.: Everybody knows that automobile collisions are very dangerous, but what is the physics behind them? Can we predict the consequences of a car crash? The answer is yes and no. Our car crash calculator is a tool that you can use to estimate what g-force acts on you in a car crash.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |