- published: 03 Apr 2020
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Systems engineering is an interdisciplinary field of engineering that focuses on how to design and manage complex engineering systems over their life cycles. Issues such as requirements engineering, reliability, logistics, coordination of different teams, testing and evaluation, maintainability and many other disciplines necessary for successful system development, design, implementation, and ultimate decommission become more difficult when dealing with large or complex projects. Systems engineering deals with work-processes, optimization methods, and risk management tools in such projects. It overlaps technical and human-centered disciplines such as control engineering, industrial engineering, software engineering, organizational studies, and project management. Systems engineering ensures that all likely aspects of a project or system are considered, and integrated into a whole.
The systems engineering process is a discovery process that is quite unlike a manufacturing process. A manufacturing process is focused on repetitive activities that achieve high quality outputs with minimum cost and time. The systems engineering process must begin by discovering the real problems that need to be resolved, and identify the most probable or highest impact failures that can occur - systems engineering involves finding elegant solutions to these problems.
The process theory of composition (hereafter referred to as "process") is a field of composition studies that focuses on writing as a process rather than a product. Based on Janet Emig's breakdown of the writing process, process is centered on the idea that students determine the content of the course by exploring the craft of writing using their own interests, language, techniques, voice, and freedom, and where students learn what people respond to and what they don't. Classroom activities often include peer work where students themselves are teaching, reviewing, brainstorming, and editing.
Historically, the ideas behind process were born out of increased college enrollment thanks to the GI Bill following World War II. Writing instructors began giving students more group work and found that, with guidance, students were able to identify and recognize areas that needed improvement in other students' papers, and that criticism also helped students recognize their own areas to strengthen [cite]. Composition scholars such as Janet Emig, Peter Elbow, and Donald Murray began considering how these methods could be used in the writing classroom. Emig, in her book, The Composing Processes of Twelfth Graders, broke down writing into distinct parts; these were later simplified into a basic three-step process by Murray: prewriting, writing, and rewriting (also called "revision").[2]
Classical thermodynamics considers three main kinds of thermodynamic process: change in a system, cycles in a system, and flow processes.
Defined by change in a system, a thermodynamic process is a passage of a thermodynamic system from an initial to a final state of thermodynamic equilibrium. The initial and final states are the defining elements of the process. The actual course of the process is not the primary concern, and often is ignored. This is the customary default meaning of the term 'thermodynamic process'. In general, during the actual course of a thermodynamic process, the system passes through physical states which are not describable as thermodynamic states, because they are far from internal thermodynamic equilibrium. Such processes are useful for thermodynamic theory.
Defined by a cycle of transfers into and out of a system, a cyclic process is described by the quantities transferred in the several stages of the cycle, which recur unchangingly. The descriptions of the staged states of the system are not the primary concern. Cyclic processes were important conceptual devices in the early days of thermodynamical investigation, while the concept of the thermodynamic state variable was being developed.
Neutron capture - the foundation of the r-process and s-process in astrophysics - occurs in both, but what is the difference in the processes and what do we mean by a high neutron flux?
The Computational Infrastructure for Nuclear Astrophysics ("CINA") freely available at nucastrodata.org enables anyone to simulate isotope and element creation in exploding stellar events including novae, X-ray bursts, and supernovae. CINA has over 100 intuitive software tools for configuring, managing, and sharing simulation input and results and currently has registered users from over 40 institutions and 180 countries. In collaboration with Oak Ridge National Laboratory, Pandia Software continues to enhance and support this one-of-a-kind software system. This animation, which was created using CINA's Element Synthesis Animator software tool, shows the results of an r-process simulation in a supernova event on the Chart of the Nuclides.
Dr. Rodrigo Fernandez is a professor in the Department of Physics at the University of Alberta. He is a computational astrophysicists who studies explosions in stars and merging stars. Video produced by Onlea https://onlea.org/ https://www.youtube.com/channel/UCFo_SSWK3DPSy497qrwkBoA The University of Alberta's online course Astro 101 offers an introduction to black holes accessible to anyone! Join a team of astrophysicists to learn how black holes form, how they behave, and how we can tell where they are! Free course on Coursera: https://www.coursera.org/learn/black-holes-astro-101 Also a For-Credit course at the University of Alberta! Search on Bear Tracks for Astro 101 https://www.beartracks.ualberta.ca/
neutron capture, r process and s process
Hi! I'm Miranda and this is my entry for the Junior Breakthrough Challenge! :) #breakthroughjuniorchallenge :3[,,_,,]~ Nyan Cat
This r-process nucleosynthesis simulation was obtained by using a trajectory describing matter ejected in neutron-star mergers as an initial condition and the nuclear mass input was computed using the Duflo-Zuker mass formula. For more details http://arxiv.org/pdf/1409.6135v1.pdf
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Carl Sagan’s famous words: “We are star stuff” refers to a mind-blowing idea – that most atomic nuclei in our bodies were created in the nuclear furnace and the explosive deaths of stars that lived in the ancient universe. In recent years it’s become clear that the truth is even more mind-blowing. Many heavy elements - includes most precious metals - were produced in an even more spectacular event: the collision of neutron stars. In fact, according to a recent study most of the Earth’s supply of these elements was created in a single neutron star merger that took place near our Sun’s birth nebula 80 million years ago before Earth formed. Check out the n...
R-process path from a Core-Collapse Supernova. Very Exciting.
Video shows what r-process means. The relatively rapid nucleosynthesis process, in supernovae, in which a large neutron flux allows rapid neutron capture and synthesis of elements up to the transuranic elements.. R-process Meaning. How to pronounce, definition audio dictionary. How to say r-process. Powered by MaryTTS, Wiktionary
Systems engineering is an interdisciplinary field of engineering that focuses on how to design and manage complex engineering systems over their life cycles. Issues such as requirements engineering, reliability, logistics, coordination of different teams, testing and evaluation, maintainability and many other disciplines necessary for successful system development, design, implementation, and ultimate decommission become more difficult when dealing with large or complex projects. Systems engineering deals with work-processes, optimization methods, and risk management tools in such projects. It overlaps technical and human-centered disciplines such as control engineering, industrial engineering, software engineering, organizational studies, and project management. Systems engineering ensures that all likely aspects of a project or system are considered, and integrated into a whole.
The systems engineering process is a discovery process that is quite unlike a manufacturing process. A manufacturing process is focused on repetitive activities that achieve high quality outputs with minimum cost and time. The systems engineering process must begin by discovering the real problems that need to be resolved, and identify the most probable or highest impact failures that can occur - systems engineering involves finding elegant solutions to these problems.