Fischer-Tropsch synthesis (FTS) has been applied as the core technology of coal-to-liquid and gas-to-liquid processes in industry. However, the product selectivity control of syngas conversion still remains challenging.
Analytical Chemistry
Jun 08, 2021
0
0
World history is often framed in terms of flows of people and migration: humans coming 'out of Africa," the spread of farmers in the Holocene, Phoenician and Greek diasporas over the ancient Mediterranean, the colonization ...
Archaeology
Apr 21, 2021
0
33
Is it the difficulty of a task that determines whether or not students are stressed when working on it? Dr. Nina Minkley, a biologist working in biology didactics at Ruhr-Universität Bochum (RUB), set out to find out the ...
Education
Apr 15, 2021
1
2
A new type of rocket thruster that could take humankind to Mars and beyond has been proposed by a physicist at the U.S. Department of Energy's (DOE) Princeton Plasma Physics Laboratory (PPPL).
Plasma Physics
Jan 28, 2021
30
2999
Cities have become the focus of global climate mitigation efforts because as they are responsible for 60 to 70% of energy-related CO2 emissions. As the world is increasingly urbanized, it is crucial to identify cost-effective ...
Environment
Jan 14, 2021
0
4
An interdisciplinary team led by Senior Researcher Dr. Christoph Rupprecht (FEAST Project, RIHN) has revealed a new definition of sustainability that expands the concept to non-human species and their needs. With this new ...
Environment
Dec 09, 2020
0
2
Charitable giving is a nearly half-trillion-dollar sector of the U.S. economy, but what accounts for why some individuals, foundations and corporations give locally while others give to charities on the other side of the ...
Social Sciences
Jul 07, 2020
0
1
A robust body of research examines and addresses gender discrepancies in many fields, but physics is not one of them, Cornell researchers have found.
Education
May 27, 2020
0
1
Future technologies that could enable quicker trips to Mars and robotic exploration of ocean worlds might have started out as NASA Innovative Advanced Concepts (NIAC). The program, which invests in early-stage technology ...
Space Exploration
Apr 10, 2020
0
8
The recent COVID-19 crisis has highlighted a fundamental concept in business operations strategy that's called "Triple-A Supply Chains." The idea is about 15 years old, and many people outside of the supply chain world are ...
Economics & Business
Apr 07, 2020
0
5
The word concept is used in ordinary language as well as in almost all academic disciplines. Particularly in philosophy, psychology and cognitive sciences the term is much used and much discussed. WordNet defines concept: "conception, construct (an abstract or general idea inferred or derived from specific instances)". However, the meaning of the term concept is much disputed. Philosopher Edouard Machery (2011), for example, argues that theories of concepts in philosophy and in psychology have distinct goals and therefore do not share the same understanding of the term concept. He writes (p. 247):
A concept is typically associated with a corresponding representation in a language or symbology; however, some concepts do not have a linguistic representation, which can make them more difficult to understand depending on a person's native language, such as a single meaning of a term.
There are prevailing theories in contemporary philosophy which attempt to explain the nature of concepts. The representational theory of mind proposes that concepts are mental representations, while the semantic theory of concepts (originating with Frege's distinction between concept and object) holds that they are abstract objects. Ideas are taken to be concepts, although abstract concepts do not necessarily appear to the mind as images, while some ideas appear to. Many philosophers consider concepts to be a fundamental ontological category of being.
The term "concept" is traced back to 1554–60 (Latin conceptum - "something conceived"),[citation needed] but what is today termed "the classical theory of concepts" is the theory of Aristotle on the definition of terms.[citation needed] The meaning of "concept" is explored in mainstream information science, cognitive science, metaphysics, and philosophy of mind. In computer and information science contexts, especially, the term 'concept' is often used in unclear or inconsistent ways.
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