Information theory | Entropy and information
Ascendency or ascendancy is a quantitative attribute of an ecosystem, defined as a function of the ecosystem's trophic network. Ascendency is derived using mathematical tools from information theory. It is intended to capture in a single index the ability of an ecosystem to prevail against disturbance by virtue of its combined organization and size. One way of depicting ascendency is to regard it as "organized power", because the index represents the magnitude of the power that is flowing within the system towards particular ends, as distinct from power that is dissipated naturally. Almost half a century earlier, Alfred J. Lotka (1922) had suggested that a system's capacity to prevail in evolution was related to its ability to capture useful power. Ascendency can thus be regarded as a refinement of Lotka's supposition that also takes into account how power is actually being channeled within a system. In mathematical terms, ascendency is the product of the aggregate amount of material or energy being transferred in an ecosystem times the coherency with which the outputs from the members of the system relate to the set of inputs to the same components (Ulanowicz 1986). Coherence is gauged by the average mutual information shared between inputs and outputs (Rutledge et al. 1976). Originally, it was thought that ecosystems increase uniformly in ascendency as they developed, but subsequent empirical observation has suggested that all sustainable ecosystems are confined to a narrow "window of vitality" (Ulanowicz 2002). Systems with relative values of ascendency plotting below the window tend to fall apart due to lack of significant internal constraints, whereas systems above the window tend to be so "brittle" that they become vulnerable to external perturbations. Sensitivity analysis on the components of the ascendency reveals the controlling transfers within the system in the sense of Liebig (Ulanowicz and Baird 1999). That is, ascendency can be used to identify which resource is limiting the functioning of each component of the ecosystem. It is thought that autocatalytic feedback is the primary route by which systems increase and maintain their ascendencies (Ulanowicz 1997.) (Wikipedia).
Transcendental Functions 19 The Function a to the power x.mp4
The function a to the power x.
From playlist Transcendental Functions
What is a horizontal asymptote
👉 Learn all about asymptotes of a rational function. A rational function is a function, having a variable in the denominator. An asymptote is a line that the graph of a function approaches but never touches. There are the vertical, the horizontal and the slant/oblique asymptotes. The ver
From playlist Asymptotes of Rational Functions | Learn About
Brainstorming: What is an Asymptote?
In this video, we explore what it means for a curve to have an asymptote. We focus on how to determine when a function has a vertical and/or horizontal asymptote. College Algebra homepage: http://webspace.ship.edu/jehamb/calg.html
From playlist College Algebra
From playlist Freedom
Interval Notation (2 of 2: Unbounded intervals)
More resources available at www.misterwootube.com
From playlist Working with Functions
How to Sort a Data Frame by a Column in Pandas
↓ Code Available Below! ↓ This video shows how to sort the rows of a pandas data frame by the values of a column. Sorting or ordering data by the values in a particular column can be a useful way to rearrange data in a logical way and allow you to focus on data records that are at the
From playlist Code Clips: Python Pandas Basics
OSB 2015 - Removing Barriers: Ascend Project Post Mortem
By, Kronda Adair, Lukas Blakk Last year the Ascend Project was announced, then in the fall the first pilot took place in Portland. This year we'll report back on how it went, hear from participants, and break down what worked and what could be changed for future versions of this type of p
From playlist Open Source Bridge 2015
Unique Factorization - Feb 08, 2021 - Rings and Modules
We introduce the Noetherianity hypothesis on rings and show that under this hypothesis that one can factor elements into a product of irreducible elements.
From playlist Course on Rings and Modules (Abstract Algebra 4) [Graduate Course]
Order from Chaos (the math bit) - Numberphile
See part one: http://youtu.be/CwIAfkuXc5A More links & stuff in full description below ↓↓↓ Featuring Simon Pampena - https://twitter.com/mathemaniac Erdős--Szekeres Theorem: http://bit.ly/1k8fv15 Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www.
From playlist Numberphile Videos
React: Sortable Responsive Table - Live Coding with Jesse
I have already created a responsive table that is populated with data from the WordPress API. Now I want users to be able to sort the data by any of the table headers. If time allows, might be nice to allow users to search as well. Also, as always, Q and A at the end! See a professional
From playlist Live Coding with Jesse
Python Pandas Tutorial (Part 7): Sorting Data
In this video, we will be learning how to sort DataFrames in Pandas. This video is sponsored by Brilliant. Go to https://brilliant.org/cms to sign up for free. Be one of the first 200 people to sign up with this link and get 20% off your premium subscription. In this Python Programming v
From playlist Pandas Tutorials
ITCZ Dynamics and Indian Monsoon: Energy Constraints (Lecture 7) by B N Goswami
ICTS Summer Course 2022 (www.icts.res.in/lectures/sc2022bng) Title : Introduction to Indian monsoon Variability, Predictability, and Teleconnections Speaker : Professor B N Goswami (Cotton University) Date : 23rd April onwards every week o
From playlist Summer Course 2022: Introduction to Indian monsoon Variability, Predictability, and Teleconnections
Countercurrent multiplication in the kidney | Renal system physiology | NCLEX-RN | Khan Academy
Created by Raja Narayan. Watch the next lesson: https://www.khanacademy.org/test-prep/nclex-rn/rn-renal-system/rn-the-renal-system/v/urination?utm_source=YT&utm_medium=Desc&utm_campaign=Nclex-rn Missed the previous lesson? https://www.khanacademy.org/test-prep/nclex-rn/rn-renal-system/r
From playlist Human anatomy and physiology | Health & Medicine | Khan Academy
How to Organize a DataFrame in Pandas (Pandas Tutorials 04)
If you enjoy this video, please subscribe. ✅Be my Patron: https://www.patreon.com/WJBMattingly ✅PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=AZ73QW52SUX8N¤cy_code=USD&source=url textbook: pandas.pythonhumanities.com If there's a specific video you would li
From playlist Pandas Python Tutorials
MAG - Lecture 6 - The Hilbert Basis Theorem
metauni Algebraic Geometry (MAG) is a first course in algebraic geometry, in Roblox. In Lecture 6 we prove the Hilbert Basis Theorem, which says that in a polynomial ring over a field every ideal is finitely generated. The webpage for MAG is https://metauni.org/mag/. This video was recor
From playlist MAG
👉 Learn all about asymptotes of a rational function. A rational function is a function, having a variable in the denominator. An asymptote is a line that the graph of a function approaches but never touches. There are the vertical, the horizontal and the slant/oblique asymptotes. The ver
From playlist Asymptotes of Rational Functions | Learn About