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examples of efficient calculations

Calculating the Efficient Frontier Part 1 The

Jun 07, 2011Calculating the Efficient Frontier Part 1. The covariance matrix for our example is shown below. In practice, the historical covariance matrix can be calculated by reading the historical returns into Octave or Matlab and using the cov(X) command. Note that the diagonal of the matrix is the variance of our four securities. So,

Process Cycle Efficiency Formula and Example

Process Cycle Efficiency. There is a metric that helps to identify how much of a process is actually value added. It requires a few things Map the process. Identify the Value added steps, non value added steps, and the non value added but necessary steps. Stratify your map according to the items in #2. Add a time dimension to the process steps.

Efficient landscape metrics calculations for buffers . All calculations were performed in R, using gdalUtils, sf, and raster packages for spatial data handling, purrr to ease some calculations, and most importantly the landscapemetrics package was used to calculate landscape metrics.

Efficiency Ratio Definition

May 21, 2019Efficiency Ratio. Loading the player The efficiency ratio is typically used to analyze how well a company uses its assets and liabilities internally. An efficiency ratio can calculate the turnover of receivables, the repayment of liabilities, the quantity and usage

Determining Electric Motor Load and Efficiency

DETERMINING ELECTRIC MOTOR LOAD AND EFFICIENCY For example, a 10 hp motor with a 1.15 service factor can handle an 11.5 hp load Example Input Power Calculation An existing motor is identified as a 40 hp, 1800 rpm unit with an open drip proof enclosure. The motor is 12 years old and has

Electric Motor Efficiency Engineering ToolBox

Electric Motor Efficiency Calculate electric motor efficiency Electric Motor Wiring 480 Volt Electrical motor wiring data NEMA amps, starter size, HMCP size for motors ranging 1/2 to 500 hp Electrical Induction Motors Synchronous Speed The speed at which an induction motor operates depends on the input power frequency and the number

Ductwork sizing, calculation and design for efficiency

Duct sizing, duct calculation, duct design, energy efficient ductwork design. Guide for how to design a ductwork system. Full worked example included with CFD simulations to optimise your design to ensure the highest energy efficiency.

Calculating Productivity and Efficiency iSixSigma

Feb 06, 2010Looking for away to calculate productivity and efficiency. Does the following make sense Productivity = # of product completed x standard / # of employees x hours paid or 8 Efficiency = # of Product completed x standard / # of employees x hours working on product (Subtract breaks) Any help would be appreciated.

How to Calculate Your Car's Fuel Efficiency in MPG (with

Jun 03, 2019How to Calculate Your Car's Fuel Efficiency (MPG). As gas prices rise, fuel efficiency is becoming more and more of a critical factor. Knowing your car's MPG (that is, how many miles it gets per gallon) can help you determine if it's a gas

Boiler Efficiency Introduction and Methods of Calculation

Boiler Efficiency Boiler efficiency is a combined result of efficiencies of different components of a boiler. A boiler has many sub systems whose efficiency affects the overall boiler efficiency. are some other losses which also play a role while deciding the boiler efficiency and hence need to be considered while calculating the boiler

Productivity and Efficiency Calculations The Difference

Not unlike the Weighted Moving Average calculation and how it can help us understand trends in a time series, productivity and efficiency can help us understand our operation. Consider the following Productivity Example

Efficiency Formula Softschools

Efficiency Formula. In many processes, work or energy is lost, for example as waste heat or vibration. The efficiency is the energy output, divided by the energy input, and expressed as a percentage. A perfect process would have an efficiency of 100%. = efficiency (Greek letter "eta") W out = the work or energy produced by a process. Units are Joules (J).

How to Calculate Workplace Productivity Smartsheet

Measuring Efficiency. The closer the final number is to 100, the more effective your employees are. For example, lets say the standard labor hours for a certain project is 80 and the actual amount of time worked is 92. You would divide 80 by 92, and multiply by 100, calculating your efficiency to be 87%.

Calculating the Efficient Frontier Part 1 The

Calculating the Efficient Frontier In this post, Ill demonstrate how to calculate and plot the efficient frontier using the expected returns and covariance matrix for a set of securities. In a future post, Ill demonstrate how to calculate the security weights for various points on this efficient frontier using the two fund separation theorem.

Utilization, Productivity and Efficiency Calculations

Jul 27, 2018Utilization, Productivity and Efficiency Calculations. How do calculate Utilization, Productivity and Efficiency for every individual and for the team? 0. August 28, 2013 at 429 am #195769. S Lakshmi Narayana Kumar. Member. @slnkumar . Include @slnkumar in your post and this person will Example 4 total employees working 2 Processes

Q A Calculating Efficiency Department of Physics

For example, the "efficiency" of an air conditioner is often taken to mean the ratio of the energy it pumps out of a room to the energy it draws from the electrical outlet. A good result for that might be, for example "4.3" That would mean that paying for 1 Joule of electrical energy is enough to pump 4.3 Joules of heat out of your house.

Simple Boiler Efficiency Calculation Brighthub Engineering

slide 1 of 7. The ASME method for Boiler Efficiency Calculation PTC 4 is elaborate and requires many input data points, measurements, and samples. With some practical assumptions, the calculations are made simple and are shown in this article. The Losses method is used to calculate boiler efficiency.

Methods for Calculating CHP Efficiency US EPA

Key Terms Used in Calculating CHP Efficiency. Calculating a CHP system's efficiency requires an understanding of several key terms CHP system.The CHP system includes the prime mover (e.g., combustion turbine, engine, microturbine), the electric generator, and the heat recovery unit that transforms otherwise wasted heat to useful thermal energy.

The formula for calculating efficiency AccountingTools

For example Labor efficiency variance. This is the actual hours worked minus the standard hours worked, Material yield variance. This is the actual number of units used minus the standard amount expected to be used, Variable overhead efficiency variance. This is the difference between the

Ductwork sizing, calculation and design for efficiency

METHODS OF DUCTWORK DESIGNDESIGN EXAMPLEDESIGN CONSIDERATIONSDUCT SIZING HOW TO SIZE DUCTWORKSIZING DUCTWORK FITTINGSFINDING THE INDEX RUN DUCT SIZINGDUCTWORK DAMPERS SYSTEM BALANCINGThere are many different methods used to design ventilation systems, the most common ways being 1. Velocity reduction method (Residential or small commercial installations) 2. Equal friction method (Medium to large sized commercial installations) 3. Static regain Very large installations (concert halls, airports and industrial)Were going to focus on the equal friction method in this example as its the most common method used for commercial HVAC systems and its fairly simple to follow.

The efficiency ratio is a quick and easy measure of a bank's ability to turn resources into revenue. The lower the ratio, the better (50% is generally regarded as the maximum optimal ratio). An increase in the efficiency ratio indicates either increasing costs or decreasing revenues.

How to Get the Most Realistic Efficiency Calculation for

In short, the designer is faced with this task achieving the most realistic efficiency calculation for gearboxes. These demands present a major challenge for the software supplier. In response KISSsoft implemented a special template in KISSsys to automate the efficiency calculation and thermal rating of a whole gearbox including gears, shafts, bearings, seal, discs, synchronizers and other machine

Utilization, Productivity and Efficiency Calculations

Jul 27, 2018Utilization, Productivity and Efficiency Calculations. Efficiency is = (actual output/Effective capacity), effective capacity would be your benchmark or target set for that task. Utilization is = (actual output/designed capacity), designed capacity is the target which can be achieved under ideal condition for e.g you have 8 hr/day to work ,

Boiler Efficiency Introduction and Methods of Calculation

Thermal Efficiency. These other parameters include ON OFF losses, radiation losses, convection losses, blow down losses etc. In actual practice, two methods are commonly used to find out boiler efficiency, namely direct method and indirect method of efficiency calculation. In order to calculate boiler efficiency by this method,

The formula for calculating efficiency AccountingTools

Feb 08, 2019For example Labor efficiency variance. This is the actual hours worked minus the standard hours worked, Material yield variance. This is the actual number of units used minus the standard amount expected to be used, Variable overhead efficiency variance. This

Calculations Simple Electric Motors

Efficiency may be anywhere between zero and the maximum; in our example below 1000 rpm may not be the optimal speed so the for the sake of calculations you may use 10% efficiency (E = 0.1). Example speed is 1000 rpm, voltage is 6 Volts, and current is 220 mA (0.22 A)

Determining Electric Motor Load and Efficiency

For example, a 10 hp motor with a 1.15 service factor can handle an 11.5 hp load for short periods of time without incurring significant damage. Although many motors have service factors of 1.15, running the motor continuously above rated load reduces efficiency and motor life.

Pump Power Calculation Formula Specific speed of a

In this article discussed about pump basic formulas with examples like pump power calculation formula, specific speed of centrifugal pump and affinity laws for centrifugal and displacement pumps.Also provided online calculator for pump power calculation. Pump Efficiency and Pump Power Calculation Formulas with Examples

How to Calculate an Efficiency Ratio Bizfluent

The basic formula for an efficiency ratio is expenses divided by revenue. Heres an efficiency formula example. Say your expenses in a given quarter were \$20,000 and your revenue was \$60,000. By dividing \$20,000 by \$60,000, you would get an efficiency ratio of 33 percent.

4 Examples of the Efficiency Formula Simplicable

Jun 27, 20174 Examples of the Efficiency Formula Energy Production. Energy Consumption. The energy efficiency of a machine that consumes energy is calculated as Business Processes. The efficiency of business processes is typically calculated in dollar terms Machine Efficiency. Machine efficiency can be