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From Simple to Complex and Ultra-complex Systems: A Paradigm Shift Towards Non-Abelian Systems Dynamics
simple complex and supercomlpex systems categoryn theory framework non-Abelian paradigm shift the theory of levels of reality
2015/7/15
Atoms, molecules, organisms distinguish layers of reality because of the causal links that govern their behavior, both horizontally (atom-atom, molecule-molecule, organism-organism) and vertically (at...
Integrating uncertainty in time series population forecasts: An illustration using a simple projection model
Bayesian Bayesian approach England model averaging population forecasting Wales
2014/11/25
Background: Population forecasts are widely used for public policy purposes. Methods to quantify the uncertainty in forecasts tend to ignore model uncertainty and to be based on a single model.Objecti...
Modeling reproductive decisions with simple heuristics
age at first marriage ecological rationality heuristics mate choice mate search parental investment
2014/11/25
Background: Many of the reproductive decisions that humans make happen without much planning or forethought, arising instead through the use of simple choice rules or heuristics that involve relativel...
A Simple Method to Visualize Results in Nonlinear Regression Models
gradient estimation dimensionality kernel smoothing nonlinear mean plots least squares cross validation
2012/10/23
A simple graphical approach to presenting results from nonlinear regression models is described. In the face of multiple covariates, 'partial mean' plots may be unattractive. The approach here is port...
Heterogeneous Firms, Trade, and Economic Policy: Insights from a Simple Two-Sector Model
firm heterogeneity monopolistic competition economic policies and welfare
2012/10/22
The robust empirical finding that exporting firms are systematically different from firms that merely serve domestic consumers has inspired the development of a new brand of trade theory, the theory o...
Computational Social Science and High Performance Computing: A Case Study of a Simple Model at Large Scales
Agent-Based Modeling High-Performance Computing Social Science Simulation Visualization Scalability Triangles Simulation
2014/8/8
Advances in High-Performance Computing (HPC) offer Computational Social Science the opportunity to create simulations at scales vastly larger than in previous times. Here an example is presented showi...
The Simple Economics of Class Action: Private Provision of Club and Public Goods
class action collective litigation mass tort club liability deterrence
2014/6/24
This article uses economic categories to show how the reorganisation of civil procedure in the case of class action is not merely aimed at providing a more efficient litigation technology, as hierarc...
Simple and Objective Evaluation of the Rheological Properties of Liquid Food
sol commercial thickening agent rheological properties spring relaxation tilting test tube method glass ring method
2009/8/26
Guar gum-based and starch-based samples were used as typical examples of liquid food to assess three different simple and objective methods for measuring the rheological properties of the samples with...
A Simple, Analytically Solvable Chamberlinian Agglomeration Model
Economic geography agglomeration human capital mobility
2013/10/18
This paper presents a simple, analytically solvable Chamberlinian agglomeration model. As in the canonical core-periphery (CP) model, two agglomerative forces are at work. However, the present model e...