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  2. Semiconductor device fabrication - Wikipedia

    en.wikipedia.org/wiki/Semiconductor_device...

    It is a multiple-step photolithographic and physico-chemical process (with steps such as thermal oxidation, thin-film deposition, ion-implantation, etching) during which electronic circuits are gradually created on a wafer, typically made of pure single-crystal semiconducting material.

  3. Flowchart - Wikipedia

    en.wikipedia.org/wiki/Flowchart

    A simple flowchart representing a process for dealing with a non-functioning lamp. A flowchart is a type of diagram that represents a workflow or process. A flowchart can also be defined as a diagrammatic representation of an algorithm, a step-by-step approach to solving a task. The flowchart shows the steps as boxes of various kinds, and their ...

  4. Systems development life cycle - Wikipedia

    en.wikipedia.org/wiki/Systems_development_life_cycle

    In systems engineering, information systems and software engineering, the systems development life cycle (SDLC), also referred to as the application development life cycle, is a process for planning, creating, testing, and deploying an information system. [1] The SDLC concept applies to a range of hardware and software configurations, as a ...

  5. Food and biological process engineering - Wikipedia

    en.wikipedia.org/wiki/Food_and_biological...

    Food and biological process engineering is a discipline concerned with applying principles of engineering to the fields of food production and distribution and biology. It is a broad field, with workers fulfilling a variety of roles ranging from design of food processing equipment to genetic modification of organisms.

  6. Production part approval process - Wikipedia

    en.wikipedia.org/wiki/Production_part_approval...

    Production Part Approval Process (PPAP) is used in the Aerospace or automotive supply chain for establishing confidence in suppliers and their production processes. Actual measurements are taken from the parts produced and are used to complete the various test sheets of PPAP. "All customer engineering design record and specification ...

  7. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Forms Data Format is defined in the PDF specification (since PDF 1.2). The Forms Data Format can be used when submitting form data to a server, receiving the response, and incorporating it into the interactive form. It can also be used to export form data to stand-alone files that can be imported back into the corresponding PDF interactive form.

  8. Fracking - Wikipedia

    en.wikipedia.org/wiki/Fracking

    Hydraulic fracturing began as an experiment in 1947, [2] and the first commercially successful application followed in 1949. As of 2012, 2.5 million "frac jobs" had been performed worldwide on oil and gas wells, over one million of those within the U.S. [ 3 ] [ 4 ] Such treatment is generally necessary to achieve adequate flow rates in shale ...

  9. Two-step flow of communication - Wikipedia

    en.wikipedia.org/wiki/Two-step_flow_of_communication

    The two-step flow of communication model says that most people form their opinions under the influence of opinion leaders, who in turn are influenced by the mass media. In contrast to the one-step flow of the hypodermic needle model or magic bullet theory, which holds that people are directly influenced by mass media, according to the two-step ...