duration

Examples of duration in the following topics:

• Duration

  • The dual use of the word "duration" in the Macaulay duration and the modified duration, as both the weighted average time until repayment and as the percentage change in price, often causes confusion.
  • When yields are continuously-compounded the Macaulay duration and the modified duration will be numerically equal.
  • The modified duration is used more than the Macaulay duration.
  • The Macaulay duration and the modified duration are both termed "duration" and have the same (or close to the same) numerical value, but it is important to keep in mind the conceptual distinctions between them.
  • For everyday use, the equality (or near-equality) of the values for the Macaulay duration and the modified duration can be a useful aid to intuition.

• Rhythmic Values

  • Rhythm refers to the combination of long and short durations in time.
  • Durations are notated with either unfilled or filled noteheads.
  • For each durational symbol there exists a corresponding rest.
  • Dots and ties allow for basic durations to be lengthened.
  • Multiple dots can be added to a duration.

• Onset, Duration, and Half-Life of Hormone Activity

  • Hormone half-life and duration of activity are limited and vary from hormone to hormone.
  • Hormone half-life and duration of activity are limited and vary from hormone to hormone.
  • Duration of hormone activity refers to the duration of events which were stimulated by hormone-receptor binding.

• Velocity and Duration of Muscle Contraction

  • In a twitch contraction, a short burst of stimulation causes the muscle to contract, but the duration is so short that the muscle begins relaxing before reaching peak force.
  • Twitch contractions are short in duration and though they have high velocity, they begin resting before reaching peak force.
  • Tetanic contractions, which are long in duration, reach peak force and plateau.

• Sensory Registers

  • Each memory stage has four attributes: representation, capacity, duration, and cause of forgetting.
  • Representation in the auditory register is echoic (based on sound); its duration is 2-3 seconds, it is only limited to the sounds we actually can hear and decay is the primary cause for forgetting.

• Disease Severity and Duration

  • The severity and duration of diseases vary greatly and are important for epidemiological studies.
  • The scope of a disease also affects its severity and duration:
  • Discuss the severity and various types of disease duration, including: acute, chronic, flare-up, refractory, progressive, remission and a cure

• Time

  • Time is the fundamental physical quantity of duration and is measured by the SI Unit known as the second.
  • The second is now operationally defined as "the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom."

• Disadvantages of the IRR Method

  • IRR can't be used for exclusive projects or those of different durations; IRR may overstate the rate of return.
  • Moreover, since IRR does not consider cost of capital, it should not be used to compare projects of different duration.

• Identifying variables in the model that may not be helpful

  • Identify the p-values for both the duration and wheels variables in the model.
  • There is not statistically significant evidence that either the stock photo or duration variables contribute meaningfully to the model.
  • 8.15: The p-value for the auction duration is 0.8882, which indicates that there is not statistically significant evidence that the duration is related to the total auction price when accounting for the other variables.

• Calculating Values for Different Durations of Compounding Periods

  • Finding the Effective Annual Rate (EAR) accounts for compounding during the year, and is easily adjusted to different period durations.