Systems engineering

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.

Thermodynamic process

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.

Process philosophy

Process philosophy (or ontology of becoming) identifies metaphysical reality with change and development. Since the time of Plato and Aristotle, philosophers have posited true reality as "timeless", based on permanent substances, while processes are denied or subordinated to timeless substances. If Socrates changes, becoming sick, Socrates is still the same (the substance of Socrates being the same), and change (his sickness) only glides over his substance: change is accidental, whereas the substance is essential. Therefore, classic ontology denies any full reality to change, which is conceived as only accidental and not essential. This classical ontology is what made knowledge and a theory of knowledge possible, as it was thought that a science of something in becoming was an impossible feat to achieve.

In opposition to the classical model of change as accidental (as argued by Aristotle) or illusory, process philosophy regards change as the cornerstone of reality — the cornerstone of Being thought of as Becoming. Modern philosophers who appeal to process rather than substance include Nietzsche, Heidegger, Charles Peirce, Alfred North Whitehead, Alan Watts, Robert M. Pirsig, Charles Hartshorne, Arran Gare, Nicholas Rescher, Colin Wilson, and Gilles Deleuze. In physics Ilya Prigogine distinguishes between the "physics of being" and the "physics of becoming". Process philosophy covers not just scientific intuitions and experiences, but can be used as a conceptual bridge to facilitate discussions among religion, philosophy, and science.

Polaris (convention)

Polaris (formerly Toronto Trek) is an annual science fiction and fantasy convention held in Toronto, Ontario, Canada in the past and now held in Richmond Hill, Ontario, Canada.

It began in 1986 as a relaxacon as Toronto Trek Celebration. Two years later, in 1988, Toronto Trek Celebration 2 took place. In 1989 it dropped the word "Celebration" and became simply "Toronto Trek". For its twenty-first convention in 2007, the name was changed to "Polaris". At Polaris 26, held July 5–7, 2012, it was announced Polaris had come to an end and that a new convention would replace Polaris in 2013.

The convention had a focus on media guests from science fiction, fantasy movies and television series and novel authors such as Star Trek, Babylon 5, Stargate, Doctor Who, Buffy the Vampire Slayer, Jericho, Lost and Battlestar Galactica. Photo opportunities, autographs and Question & Answer sessions feature the media guest, who sometimes come to other programming and after hours events.

Polaris (short story)

"Polaris" is a short story by H. P. Lovecraft, written in 1918 and first published in the December 1920 issue of the amateur journal The Philosopher. It is noteworthy as the story that introduces Lovecraft's fictional Pnakotic Manuscripts, the first of his arcane tomes.

Inspiration

Critic William Fulwiler writes that "'Polaris' is one of Lovecraft's most autobiographical stories, reflecting his feelings of guilt, frustration, and uselessness during World War I. Like the narrator, Lovecraft was 'denied a warrior's part', for he 'was feeble and given to strange faintings when subjected to stress and hardships'".

Like many Lovecraft stories, "Polaris" was in part inspired by a dream, which he described in a letter: "Several nights ago I had a strange dream of a strange city--a city of many palaces and gilded domes, lying in a hollow betwixt ranges of grey, horrible hills.... I was, as I said, aware of this city visually. I was in it and around it. But certainly I had no corporeal existence."

Polaris (disambiguation)

Polaris is a star, also known as the North Star.

Polaris may also refer to:

Places

Canada

Korea

United States

Art, entertainment, and media

Comics

Fictional entities

Games

Literature

Music

Groups

Prizes