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Related Concept Videos

Quality Assurance01:19

Quality Assurance

Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
Quality Control01:05

Quality Control

Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Aliasing01:18

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original signal...
Design Example01:23

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
Qualitative Analysis01:10

Qualitative Analysis

Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
Qualitative Analysis03:46

Qualitative Analysis

For solutions containing mixtures of different cations, the identity of each cation can be determined by qualitative analysis. This technique involves a series of selective precipitations with different chemical reagents, each reaction producing a characteristic precipitate for a specific group of cations. Metal ions within a group are further separated by varying the pH, heating the mixture to redissolve a precipitate, or adding other reagents to form complex ions.
For instance, group IV...

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Related Experiment Video

Updated: May 9, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Spectrum analysis on quality requirements consideration in software design documents.

Haruhiko Kaiya1, Masahiro Umemura, Shinpei Ogata

  • 1Department of Computer Science, Shinshu University, 380-8553 Nagano, Japan.

Springerplus
|July 27, 2013
PubMed
Summary

This study introduces a new method to verify if software quality requirements are incorporated during the design phase. Spectrum analysis for quality requirements objectively measures and compares quality considerations between requirement and design documents.

Keywords:
Quality requirementsRequirements analysisSoftware design documentSoftware engineeringTraceability

Related Experiment Videos

Last Updated: May 9, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
15:25

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

Published on: February 4, 2018

Area of Science:

  • Software Engineering
  • Quality Assurance

Background:

  • Ensuring software quality requires integrating quality requirements from the analysis stage into final products.
  • Quality requirements must be considered in intermediate stages like design and architecture for effective implementation.

Purpose of the Study:

  • To propose and validate a novel method for assessing the integration of quality requirements during the software design stage.

Main Methods:

  • Applying "spectrum analysis for quality requirements" to both requirements specifications and design documents.
  • Numerically representing quality requirement considerations within documents via derived spectra.
  • Objectively comparing the alignment of quality requirements between specification and design documents.

Main Results:

  • The proposed method successfully validated the consideration of quality requirements in design documents.
  • Spectrum analysis provided a numerical representation for objective comparison.
  • The method was successfully applied to commercial software systems using a supporting tool.

Conclusions:

  • The developed method offers an objective approach to verify quality requirement integration in software design.
  • Spectrum analysis is effective for quantitatively assessing the traceability of quality requirements from specification to design.
  • This technique aids in ensuring that quality requirements are consistently addressed throughout the software development lifecycle.