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Seneca Cliff
The Seneca effect, or Seneca cliff or Seneca collapse, is a mathematical model proposed by Ugo Bardi to describe situations where a system's rate of decline is much sharper than its earlier rate of growth. Description In 2017, Bardi published a book titled ''The Seneca Effect: When Growth is Slow but Collapse is Rapid'', named as the Roman philosopher and writer Seneca, who wrote ''Fortune is of sluggish growth, but ruin is rapid'' ('' Letters to Lucilius'', 91.6): Bardi's book looked at cases of rapid decline across societies (including the fall of empires, financial crises, and major famines), in nature (including avalanches), and through man-made systems (including cracks in metal objects). Bardi concluded that rapid collapse is not a flaw, or "bug" as he terms it, but a "varied and ubiquitous phenomena" with multiple causes and resultant pathways. The collapse of a system can often clear the path for new, and better adapted, structures. In a 2019 book titled ''Before the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathematical Model
A mathematical model is an abstract and concrete, abstract description of a concrete system using mathematics, mathematical concepts and language of mathematics, language. The process of developing a mathematical model is termed ''mathematical modeling''. Mathematical models are used in applied mathematics and in the natural sciences (such as physics, biology, earth science, chemistry) and engineering disciplines (such as computer science, electrical engineering), as well as in non-physical systems such as the social sciences (such as economics, psychology, sociology, political science). It can also be taught as a subject in its own right. The use of mathematical models to solve problems in business or military operations is a large part of the field of operations research. Mathematical models are also used in music, linguistics, and philosophy (for example, intensively in analytic philosophy). A model may help to explain a system and to study the effects of different components, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kodak
The Eastman Kodak Company, referred to simply as Kodak (), is an American public company that produces various products related to its historic basis in film photography. The company is headquartered in Rochester, New York, and is incorporated in New Jersey. It is best known for photographic film products, which it brought to a mass market for the first time. Kodak began as a partnership between George Eastman and Henry A. Strong to develop a film roll camera. After the release of the Kodak camera, Eastman Kodak was incorporated on May 23, 1892. Under Eastman's direction, the company became one of the world's largest film and camera manufacturers, and also developed a model of welfare capitalism and a close relationship with the city of Rochester. During most of the 20th century, Kodak held a dominant position in photographic film, and produced a number of technological innovations through heavy investment in research and development at Kodak Research Laboratories. Kodak produce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peak Oil
Peak oil is the point when global oil production reaches its maximum rate, after which it will begin to decline irreversibly. The main concern is that global transportation relies heavily on gasoline and diesel. Adoption of electric vehicles, biofuels, or more efficient transport (like trains and waterways) could help reduce oil demand. Peak oil relates closely to oil depletion; while petroleum reserves are finite, the key issue is the economic viability of extraction at current prices. Initially, it was believed that oil production would decline due to reserve depletion, but a new theory suggests that reduced oil demand could lower prices, affecting extraction costs. Demand may also decline due to persistent high prices. Over the last century, many predictions of peak oil timing have been made, often later proven incorrect due to increased extraction rates. M. King Hubbert introduced the concept in a 1956 paper, predicting U.S. production would peak between 1965 and 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resource Economics
Natural resource economics deals with the Supply (economics), supply, Demand (economics), demand, and Resource allocation, allocation of the Earth's natural resources. One main objective of natural resource economics is to better understand the role of natural resources in the economy in order to develop more Sustainability, sustainable methods of managing those resources to ensure their availability for future generations. Resource economists study interactions between economic and natural systems, with the goal of developing a sustainable and efficient economy. Areas of discussion Natural resource economics is a transdisciplinary field of academic research within economics that aims to address the connections and interdependence between human economies and natural ecosystems. Its focus is how to operate an economy within the ecological constraints of earth's natural resources.Encyclopedia of EarthArticle Topic: ecological economics/ref> Resource economics brings together and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economics Curves
Economics () is a behavioral science that studies the Production (economics), production, distribution (economics), distribution, and Consumption (economics), consumption of goods and services. Economics focuses on the behaviour and interactions of Agent (economics), economic agents and how economy, economies work. Microeconomics analyses what is viewed as basic elements within economy, economies, including individual agents and market (economics), markets, their interactions, and the outcomes of interactions. Individual agents may include, for example, households, firms, buyers, and sellers. Macroeconomics analyses economies as systems where production, distribution, consumption, savings, and Expenditure, investment expenditure interact; and the factors of production affecting them, such as: Labour (human activity), labour, Capital (economics), capital, Land (economics), land, and Entrepreneurship, enterprise, inflation, economic growth, and public policies that impact gloss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equations
In mathematics, an equation is a mathematical formula that expresses the equality of two expressions, by connecting them with the equals sign . The word ''equation'' and its cognates in other languages may have subtly different meanings; for example, in French an ''équation'' is defined as containing one or more variables, while in English, any well-formed formula consisting of two expressions related with an equals sign is an equation. Solving an equation containing variables consists of determining which values of the variables make the equality true. The variables for which the equation has to be solved are also called unknowns, and the values of the unknowns that satisfy the equality are called solutions of the equation. There are two kinds of equations: identities and conditional equations. An identity is true for all values of the variables. A conditional equation is only true for particular values of the variables. The " =" symbol, which appears in every equation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tim Jackson (economist)
Tim Jackson (born 1957) is a British Ecological economics, ecological economist and professor of sustainable development at the University of Surrey. He is the director of the Centre for the Understanding of Sustainable Prosperity (CUSP), a multi-disciplinary, international research consortium which aims to understand the economic, social and political dimensions of sustainable prosperity. Tim Jackson is the author of ''Prosperity Without Growth'' (2009 and 2017) and ''Material Concerns – pollution profit and quality of life, Material Concerns'' (1996). In 2016, he received the Hillary Institute, Hillary Laureate for exceptional mid-career Leadership. His most recent book ''Post Growth—Life After Capitalism'' was published in March 2021 by Polity (publisher), Polity Press. Work Academic work For more than twenty five years, he has worked internationally on sustainable consumption and production. During five years at the Stockholm Environment Institute in the early 1990s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Tainter
Joseph Anthony Tainter (born December 8, 1949) is an American anthropologist and historian. Biography Tainter studied anthropology at the University of California, Berkeley and Northwestern University, where he received his Ph.D. in 1975. he holds a professorship in the Department of Environment and Society at Utah State University. His previous positions include Project Leader of Cultural Heritage Research, Rocky Mountain Forest and Range Experiment Station, Albuquerque, New Mexico and assistant professor of anthropology at the University of New Mexico. Tainter has written and edited many articles and monographs. His best-known work, ''The Collapse of Complex Societies'' (1988), examines the collapse of Maya and Chacoan civilizations, and of the Western Roman Empire, in terms of network theory, energy economics and complexity theory. Tainter argues that sustainability or collapse of societies follow from the success or failure of problem-solving institutions and that societi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Societal Collapse
Societal collapse (also known as civilizational collapse or systems collapse) is the fall of a complex human society characterized by the loss of cultural identity and of social complexity as an Complex adaptive system, adaptive system, the downfall of government, and the rise of violence. Possible causes of a societal collapse include natural catastrophe, war, pandemic, pestilence, famine, economic collapse, population decline or overshoot (population), overshoot, mass migration, Competence (human resources), incompetent leaders, and sabotage by rival civilizations. A collapsed society may revert to a more primitive state, be absorbed into a stronger society, or completely disappear. Virtually all civilizations have suffered such a fate, regardless of their size or complexity. Most never recovered, such as the Western and Eastern Roman Empires, the Spanish conquest of the Maya, Maya civilization, and the History of Easter Island#Destruction of society and population, Easter Isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Management Today
Haymarket Media Group is a private media company headquartered in London, United Kingdom. It has publications in the consumer, business and customer sectors, both print and online. It operates exhibitions allied to its own publications, and previously on behalf of organisations such as the BBC. History Haymarket was founded in 1957. Clive Labovitch and Michael Heseltine – later a Cabinet minister under Margaret Thatcher and Deputy Prime Minister under John Major – who had met at university, started out with the 1957 ''Directory of Opportunities for Graduates'', and in 1959 relaunched ''Man About Town'', which was to become an influential (if unprofitable) men's consumer magazine. The company failed in its relaunch of the British news weekly ''Topic'', the title closing at the end of 1962, within three months of the takeover. The partners split in 1965, with Heseltine renaming his half of the business Haymarket Press to publish ''Management Today''. In 1965.Buying the med ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asymmetry
Asymmetry is the absence of, or a violation of, symmetry (the property of an object being invariant to a transformation, such as reflection). Symmetry is an important property of both physical and abstract systems and it may be displayed in precise terms or in more aesthetic terms. The absence of or violation of symmetry that are either expected or desired can have important consequences for a system. In organisms Due to how cell (biology), cells divide in organisms, asymmetry in organisms is fairly usual in at least one dimension, with Symmetry in biology, biological symmetry also being common in at least one dimension. Louis Pasteur proposed that biological molecules are asymmetric because the cosmic [i.e. physical] forces that preside over their formation are themselves asymmetric. While at his time, and even now, the symmetry of physical processes are highlighted, it is known that there are fundamental physical asymmetries, starting with time. Asymmetry in biology Asy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ugo Bardi
Ugo Bardi (born 23 May 1952 in Florence, Italy) is a professor of physical chemistry at the University of Florence. Career Bardi is a researcher on materials for new energy sources, a contributor to the now-defunct website, "The Oil Drum". He is the co-founder and former president of ASPO Italy, a member of the scientific committee of the (ASPO), a member of the Club of Rome, and author of several books, including ''The Limits to Growth Revisited''. Personal life Bardi was married in 1976 to his wife Grazia and is a father of two, Francesco and Donata. Works Books * * * * . * * * * * * Journals * Ugo Bardi, Andrea Atrei, Gianfranco Rovida, ''Initial stages of oxidation of the Ni3Al alloy: structure and composition of the aluminum oxide overlayer studied by XPS, LEIS and LEED''. In: ''Surface Science'' 268, Issues 1–3, (1992), 87–97, . * Andrea Balduccia, Ugo Bardi, Stefano Caporali, Marina Mastragostino, Francesca Soavi, ''Ionic liquids for hybrid supercapac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
