### activity:

Procedure
* Describes how to use, modify and override procedures.
* Many procedures entail the loss of body fluids either through bleeding or drying during surgery.
* Some procedures result in human pregnancy.
* affect functions
  - growth
* are a particular course or mode of action that describes how to perform a certain task
  - instructions, often detailed, for operation of specific systems and equipment
  - proceeding
  - specifications showing how an organization wants things to happen
  - the rules that govern processes
* are the steps that are used to achieve a principle or objective or to carry out a policy
  - to accomplishing a specific task in accordance within an organization
  - tools or processes for implementing program policies
  - used by physicians
* base on knowledge
  - scientific knowledge
* can have effects
  - side effects
* cause extreme pain
* create problems.
* extend potential.
* focus on responses.
* follow steps.
* have cost
* help customers.
* improve care
* include examinations
  - packs
  - specimens
* involve animal experiments
  - members
  - plates
  - scenes
  - sound
  - trials
* is an activity
* provide details
  - information
  - necessary information
  - overviews
  - valuable information
* raise ethical issues
* reduce ability.
* require behavior
  - expertise
  - inspections
* use options.

### activity | procedure:

Calculation
* Some calculations examine the behavior of materials at the atomic and molecular levels.
* are planning
  - procedures
* base on equations
  - evidence
  - facts
  - heat conduction equations
  - measurements
  - observations
  - statistical evidence
* confirm exchanges.
* focus on growth.
* give results
  - values
* have physical significance
* help functions
  - kidney functions
* illustrate complexity.
* include density equations
  - variation
* involve evaluation functions
* lead to consistent results
* produce results.
* provide generalization
  - predictions
  - size
* require effort
  - methods
  - sophisticate methods
* reveal answers
  - concentration
* show development
  - outcomes
  - power
* take few steps
* use approaches
  - different approaches
  - mean values
  - principles
+ Schulze method, How it works: Voting systems :: Debian
  * More calculations take place. The winner W is the one such that for every other candidate X, there is a 't' so that W beats X with strength 't', but X does not beat W with strength 't'.

### activity | procedure | calculation:

Approximation
* are contexts
  - joining
  - similarity
  - versions
* is the approach of choice when a problem is known to be hard.

### activity | procedure | calculation:

Derivative
* Some derivatives yield bulking agents, flow agents, and gums to thicken.
* are a kind of nuclear financial instrument
  - means of shifting risk
  - compounds
  - contracts between a buyer and a seller
  - purely symbol manipulation on polynomials
  - securities linked to or derived from an underlying asset such as loans or shares
  - simply financial instruments which derive their value from some underlying asset
  - the financial equivalent of explosives on a construction site
  - tools for managing risk
  - used as a base in the manufacture of soaps, detergents and lauryl alcohol
  - words
* exist for many more kinds of functions than just polynomial ones.
* play a very important role in risk management.
* provide avenues for management of financial risk.
* represent a rate of change.
* usually derive their value from stocks, currencies or commodities.

### activity | procedure | calculation | derivative:

Financial derivative
* are central to both portfolio optimization and risk management.
* let treasurers, banks, and hedge funds bet on almost anything.

Differential
* Consider a sphere rolling straight up an inclined plane.
* is differences.
* work by averaging the angular velocities of the rotations on both sides.