Tracking Definition and 120 Threads

I tend to enjoy tracking hurricanes on my own, in my spare time. I have noted how Hurricane Milton sped up quickly from a 1 over land to a 2, 3 and then 4, then 5. Then, down to 4. Then, back up to 5 Now, back to 4. Does anyone know of a site that, say, shows the position of the hurricane, as...

Electric motors and actuators are commonly used when people do solar tracking. But there are some problems. The sun moves really slowly across the sky so the motors must be massively geared down. Also, wind stress is an issue so the motors have to be built strong. This increases the price of...

Hi, Trying to track down a spammer, using the source that Outlook provides for all emails received. The message seems to have gone through several servers, and have failed several security/legitimacy tests, such as SPF. I have the IP addresses, server names of the source (77.178...) and...

Are there any alternatives to tracker for tracking moving objects? Paid or free Most of my issues with tracker are related to working with large files or videos that are long, it is really slow or it just doesn't work

https://www.phoronix.com/news/Linux-IBT-By-Default-Tip IBT is part to Control Flow Integrity strategy/standard: https://en.wikipedia.org/wiki/Control-flow_integrity

Hi PF! At the bottom of a transparent cup full of water is a hole where water drains. The cup is sloshed, so the gas-water interface is not flat. Are there any techniques you're aware of that implement machine learning to track the interface? My current technique not using ML is: 1) splice...

In general I think I follow significant figures. On one and two step problems I don't really have such a problem but I seem to constantly miss points because I get lost in complicated ones. I'm hoping I can understand more as getting into science means getting friendly with these. Let's suppose...

Hi All, Can anyone recommend a free/cheap app to track lost Android phones? Did a search and saw a few sources but wanted to see if someone here can personally recommend. In case it helps, its an LG K8.

The "Weak Signal Propagation Reporter" (WSPR) has been used in combination with other tracking methods by Richard Godfrey to refine the initial path of flight MH370 in March 2014. That flight disappeared in the Indian Ocean and two extensive underwater searches were unable to locate it. WSPR...

Hi all, I am having trouble getting repeatable results from a linear regression formula that simply uses temperature vs load cell output especially with rapidly increasing/decreasing temperatures. This appears to be a result of the thermal co-efficient of our temperature sensor being almost...

Let's say we have a rectangular plot of two curves X(t) and Y(t); and next to it we have a parametric plot of (X(t) , Y(t)). Now we want to add a slider that can control markers on both plots, so that the slider ( = ts) moves two markers X(ts) and Y(ts) across the rectangular plot and at the...

The Unacast website https://www.unacast.com/covid19/social-distancing-scoreboard purports to rate how well states are doing with social distancing by tracking the location of cell phones. Any estimate of what fraction of cell phones in the US they can track?

Our school got a robot arm and I was thinking of teaching it to play chess. AI chess is a solved problem, so is moving the arm around. However, I was hoping to at least try to use regular pieces. It would be easy enough to do it with markers, but physical pieces would need to be identified and...

Hi. This is my first post. Thanks to all who give it a look. I am working on an application that has very stringent power output requirements. There is a rechargeable battery that I am trying to manage through a bi-directional boost/buck converter as is typical of many modern-day electric...

I have a bit of confusion regarding the application of the uncertainty principle in the context of experiments. If a detector allows you to measure a particle's path through said detector, does that mean that you know a particle's position at all points in time, and are able to work out its...

Hey folks, I'm back with a new question. If I have a pipe of known diameter, with a known volume of water at a known pressure discharging downwards into atmosphere, how can I calculate the radius of its "spread". That is, how can I find what area beneath the discharging pipe is being covered...

Hello All, The goal is to formulate a multiple hypothesis test for a radar tracking problem when false alarms are occurring and to apply a particle filter on this update step, however I first need to come to/understand the multiple hypothesis formulation in this problem. Say we are interested...

Homework Statement Hello everyone, I have to implement a probabilistic data association filter with a particle filter. I have already implemented a PDAF based on the Kalman filter. The assignment considers a radar (range,angle) tracker. With the state s containing the x, y position and the x...

Hello all, I want to use a laser beam as a straightness standard for use in measuring flatness of a machine guide way which is about 2 meters long. I'm envisioning a low power laser pointed at the sensor of a digital camera which moves laterally along the imperfect guide way. The waviness...

Hi. I hope someone can assist me? I have a sensor that is being used to detect a pulse triggered from a point on the surface of a disk rotating past the sensor. I am processing the data in real time to determine if the values would count as a pulse so that I can count up the number of...

Nathan Myhrvold has raised questions about the accuracy of data NASA uses to track asteroids that may impact the earth. Myhrvold is a former Microsoft chief technologist and a guy with many diverse interests. Specifically he has questioned the size information and how it was derived. This...

I've had a refractor telescope and I've managed to get some okay photos of them moon and jupiter. The only thing it lacked however was a tracking system. I would really like to buy a low maintence telescope that has a straightforward tracking system I can use to take pictures of things such as...

From CNN: Powerful Hurricane Irma is rapidly intensifying in the open Atlantic and poses a major threat to the Caribbean and potentially to the United States next week. With the storm still five days away from the outermost Caribbean islands and at least a week away from any potential US...

I already create MR damper modelling by using non-parametric linearised data driven (NPLDD) double input model. The hysteresis curve behavior is 99.9% followed as per experimental data, Figure below: Then, by using this model, I had created closed loop model for force tracking control. The...

Trying to identify a method of improving angular repeat-ability and reliability of our measurement devices. The way this will be done, is by doing research and utilize an alternative form of measurement and detection. This method will involves adding a sensor to the existing fixtures and...

Homework Statement the plane C is being tracked by radar stations A and B. At the instant shown, the triangle ABC lies in the vertical plane, and the radar readings are θA=30o, θB = 22o, θA(dot) = 0.026rad/s and θΒ(dot) = 0.032rad/s. Determine (a) the altitude y; (b) the speed v; and (c) the...

I need to determine the best boundary shape for tracking photons being emitted from a cesium 137 DISK SOURCE that would be hitting a POINT DETECTOR 50 cm away. The cesium is not contained by anything, it is only traveling through air. What I mean by boundary shape is: the software tracks...

NASA Flight Tracking Station: The Guaymas Story - 1967 Educational Documentary wdtvlive42 - Archive Footage Published on Apr 10, 2017 This film provides a detailed description of the operations of NASA's (National Aeronautics and Space Administration's) manned flight tracking station in...

Here we are, the end of the year and it is time to think about how I will track my commitments/time/to-do lists for next year. For about the past decade plus I have been a Molskine (http://www.moleskinerie.com/), either daily or weekly planner. I am considering a Hobonichi Techo Planner...

There are a number of fusion threads, but no ongoing coverage of progress in the space, which continues apace. It would be useful to maintain a summary of the current efforts and the high water mark performances achieved. Afaik, the rate of gain to date suggests that performance (measured by...

Clear skies are gone for the winter, here's as much as I was able to get. Next summer I may have a chance at Pluto. First one is Uranus, next one is Neptune- they look a little different because I scaled them differently to fit. Enjoy!

Good day guys :smile: I need to conduct the behavioral tests on rats. I need some free program for social behavior; the program should be able to track two rats simultaneously, their movement trajectories and time spent by these animals when they are close or far to each other (and to analyse...

Hi everyone i am working on a solar tracking system for a.solar panel that i made wheighting about 30kg , i was wondering where to start looking for books where they may give examples of.such devices with mechanisms and control theory or if.by any chance you have knowledge on the subject and...

Hi. Most modern camera quadcopters (drones) have a "follow" function, allowing them to follow and film a person. The DJI Phantom 4 does this by optical tracking, most other brands require that the person carry a smartphone or other wearable. How does this work? I assume the smartphone or...

Hello! I'm having a little problem to figure out the rotation of a spherical mass, maybe you have more clear ideas! Imagine to have a sphere laying (just it weight) on a support with three contact point: 1) one wheel, that has an external torque apply. 2) helping support that touch the sphere...

Hello, Given a simple electric circuit like the one below (taken from Wikipedia) If we were to start from tracking all the forces acting on each individual free electron in the circuit, would it be possible to eventually find all the currents and voltages acting in the circuit? Probably a...

How can we make a mathematical model for tracking micronutrients in an anaerobic system (Bioreactor) that has different chambers. The feeding ( Sargassum spp.) inters in the first chamber and should pass through the system 'til the last chamber. We know the concentration of micronutrients( Fe...

I know quite a bit about tracking cell phones that are network contract phones. I need to know if it is possible to track a prepaid cell phone. I have heard that there are apps you can down load to a prepaid and there is a pay site that can then track the app on the phone. Has anyone had any...

I am working on a project which is based on importance of phase only reconstruction of a signal obtained from fft. Now ,I have detected vehicles from the Video of Traffic on road taken using stationary camera ( Please download the 1.47 MB video for testing MATLAB Code by ( step1) click on the...

I've been doing some study and repeatedly end up again at Bradley's experiments that discovered the way gamma draconis fluctuated in angle to the tune of 20 arc-seconds per year. I've been trying to track down a bunch of questions on this, but have not succeeded, so I thought I would see if I...

Homework Statement The question is- What is the minimum coefficient of static friction that would keep the car from sliding off the curve? The Cars mass is 13500KG and it is traveling at 50.0hm/hr(13.9m/s) and the curve has a radius of 2.00 x102 m. I know the centripetal acceleration of the car...

I know that matter can only exist in one state at a time; however at the quantum level knowing what state it is in at a set time is impossible to know for sure until you look at the system. Like with how Schrodinger cat is in a state of randomness between the two states of dead and alive until...

I would like to create a device that tracks the position of the feet relative to the wrist. This is to be used outdoors for people that play sports and it is to be confined within an area of 15x30 meters. The idea is for specific times, not continuously, know the relative position of the wrist...

have two solar cells which I have connected in Parallel to increase the current provided to the system. I want to calculate the maximum Power point tracking for my solar cells. There was no information provided by the seller except the one below. I have attached the open circuit reading of...

I think we can find flight 370 if we have satellite images of the flight. The question is, do we have any such images of the actual flight as it was in progress? It was a clear night. Even if the images are low resolution, as long as the color of the plane is distinguishable from its...

Suppose the clean water of a stream flows into Lake Alpha, then into Lake Beta, and then further downstream. The in and out flow for each lake is 500 liters per hour. Lake Alpha contains 400 thousand liters of water, and Lake Beta contains 200 thousand liters of water. A truck with 200 kilograms...

I'm doing experiment of a small moving object. The observation is made through a digital camera with microscope installed in front. I want to study the motion of it and I already recorded a video of it's motion. The next thing comes to track the trajectory and record the position of the object...

Homework Statement We have got a ball of radius r, which is falling from the roof of the house. How is the radius r with respect to time? We are looking at the ball directly from above and ball is at the beginning of fall x from our eyes. Neglect air resistance. Homework Equations I'm...

i am trying to design a robot which can track a transmitter which produces rf signals in a given range of frequencies(example:- 400-900 MHz). i want to know the following details. 1. i have a design of wireless robot with A433MHz RF modules. i need to change the frequency of transmission...

I have diagonalized a Hamiltonian matrix many times with a varying parameter (varying magnetic field). This gives me the eigenstates and eigenvalues of the matrix for the different field values. I now need to track the diabatic states through (avoided) level crossings of the eigenvalues...