mtbf calculation formula

center angle.Since R is determined, the arc AB length can be obtained as long as the angle θ between OA and OB is obtained. Arc AB = R * θ.Angle θ can be obtained through the vector formula: vector OA * vector OB = | OA | OB | cos θ.ThenCos θ = vector OA * vector OB/| OA | OB |= (Ax * Bx + Ay * By + Az * Bz)/R * R 4. Use latitude and longitude coordinates to represent three-dimensional Cartesian coordinates:Ax = R * cosAw * cosAjAy = R * cosAw * sinA

A wage calculation formula is usually defined in the wage system. For example, real-time = should be issued-should be deducted and so on. To calculate such an expression, the traditional method is to use a reverse polish expression to parse it. The following describes a simple method for computing. Use RPN. php In the pear library of PHP. Usage: Include 'include/pear/RPN. php ';// $ Expression = "(2 ^ 3) +

there are too many characters in the number of vertices, The International Astronomical Federation adopted MJD in 1973, which was defined as MJD = JD-2400000.5. MJD starts at UTC, January 1, November 17, 1858. The calculation of the Confucian day = K-32075 + 1461 * (I + 4800 + (J-14)/12)/4 + 367 * (J-2-(J-14) /12*12)/12-3 * (I + 4900 + (J-14)/12)/100)/4 The calculation

blog, in the technical part, more in the town yard a poem.Sqlsever is a good language, worth studying hard. Familiar with the database of additions and deletions, write procedures necessary.If the content of the post can be improved, or even the wrong place, please leave a comment, I will try to correct, strive to cast a conscience blog.Note: This article is only as a scientific research study, if I inadvertently violated your rights and interests, please be sure to timely inform, I will make c

Calculation Formula of the stock transaction simulation part: L [start date Index]: [start date] index of the current day L [start date Index]: [start time] index of the current day L [total assets = balance + total market value] L [market value = cumulative quantity X closing price] calculated based on the maximum trading day close L [position = market value/total assets] calculated based on the maximum t

Terms: QPS = req/sec = number of requests/second [Method for Calculating PV and machines in QPS] QPS statistical method [http_load is generally used for Statistics]QPS = Total number of requests/(total number of processes * request time)QPS: Number of successful requests from a single process to the server per second PV computing per server per dayFormula 1: daily total Pv = QPS * 3600*6Formula 2: daily total Pv = QPS * 3600*8 Server ComputingNumber of servers = Ceil (total PV per day/tot

Tags: OS AR for SP art amp ad BS size The length of data that can be encrypted using RSA is determined primarily by the size of the key you're using. You appear to be using OAEP, so the maximum length is: keyLength - 2 - 2 * hashLength WhereKeylengthIs the length of the RSA modulus in bytes. You're using a 1024 bit key so: keyLength = 1024 / 8 = 128 And since you're using OAEP with SHA-1 hashLength = 20 So the maximum you can encrypt is: 128 - 2 - 2 * 20 = 86 Which is exactly what your

Calculation Formula of capacitor charge discharge time Set, V0 as the initial voltage value on the capacitor;V1 is the final charged or placed voltage value of the capacitor;VT is the voltage value of the capacitor at t time.Then,Vt = "V0" + (V1-V0) * [1-exp (-T/RC)]Or,T = rc * ln [(V1-V0)/(V1-Vt)] For example, a battery with a voltage of E is charged to a capacitor C with a initial value of 0 through

Android's definition of each resolutionHow to calculate when a picture is stored in a format argb_8888Memory consumption = picture length * Picture width/bytesPicture length = picture original long (Device dpi/folder dpi) Picture width = Picture original width (device dpi/folder dpi)Examples of validation are as follows:Picture size 200 * 320, device is red meter dpi is 320, belongs to xhdpi device.Verify that a picture is placed in hdpi and the following is the result of the code output:Dd/ma

The needs to be positioned to get the latitude and longitude and calculate the distance when doing the project, using HTML5 to obtain the latitude and longitude degree. Calculation formula for distance between two degrees of latitude and longitude /** * @desc based on latitude and longitude between two points * @param float $lat Latitude value * @param float $lng Longitude value */publicfunctionge

1.arcgis Server tile Calculation formula and Geturl method: Geturl:function (bounds) {var lon1=bounds.left;var lat1=bounds.top;var lon2=bounds.right;var Lat2=bounds.bottom;var picheight=256; Picture sizevar Picresolution,picrow,piccol; Resolution, picture line number, column numbervar tileoriginx,tileoriginy; Chettu Original Pointvar iresolution = this.map.getResolution ();var temp1=new Array ();var I,zoom=

Valve Game company Open source Gamenetworkingsockets[1], both support reliable data transmission, but also support unreliable data transmission, its data transmission is based on UDP, the implementation of TCP-friendly congestion control mechanism to ensure the fairness of bandwidth occupancy. [2] Its rate-control formula is based on a famous paper. Now, record its bandwidth calculation program here for a r

Tags: wireless communication db MW powerIn wireless communication, often hear such a device how many db, in fact, refers to the power, because the power is linear change, not easy to remember and calculate, then use the DB to represent, the complete unit is dbm, is multiplied.Calculation formulas for dbm and power1. The underlying values need to be remembered and then calculated based on this. Example: 0DBM=1MW,1W=1000MW2.DBM increases by 3, the power increases by 1 time times the need to multip

WPS Word is one of our common Office software, because of its simple, practical, so well received by the user's favorite. When we edit a document, we sometimes need to insert a table in the document, compare or assist some data, and then count some of the data in the table. For the calculation of the data in the table, we usually are accustomed to using Excel to operate, thus ignoring the WPS text in the table cal