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Technology Structural Implications from the Extension of a Patent Search Method
(Massachusetts Institute of Technology. Engineering Systems Division, 2014-07)
Many areas of academic and industrial work make use of the notion of a ‘technology’. This paper attempts to reduce the ambiguity around the definition of what constitutes a ‘technology’ by extension of a method described ...
An Extension of Dematerialization Theory: Incorporation of Technical Performance Increases and the Rebound Effect
(Massachusetts Institute of Technology. Engineering Systems Division, 2014-07)
Dematerialization is the reduction in the quantity of materials needed to produce something useful over time. Dematerialization fundamentally derives from ongoing increases in technical performance but it can be counteracted ...
Quantitative empirical trends in technical performance
(Massachusetts Institute of Technology. Engineering Systems Division, 2014-07)
Technological improvement trends such as Moore’s law and experience curves have been widely used to understand how technologies change over time and to forecast the future through extrapolation. Such studies can also ...
Measuring and Understanding Hierarchy asMeasuring and Understanding Hierarchy as an Architectural Element in Industry Sectors an Architectural Element in Industry Sectors
(Massachusetts Institute of Technology. Engineering Systems Division, 2009-06)
Hierarchy is a generic structure in which levels are asymmetrically ordered. In an industry setting, classic supply chains display strict hierarchy, whereas clusters of firms have linkages going in many different directions. ...
ESD Terms and Definitions (Version 12)
(Massachusetts Institute of Technology. Engineering Systems Division, 2001-10)
Basic terms related to engineering systems
Quantitative Determination Of Technological Improvement From Patent Data
(Massachusetts Institute of Technology. Engineering Systems Division, 2014-10)
The results in this paper establish that information contained in patents in a technological domain is strongly correlated with the rate of technological progress in that domain. The importance of patents in a domain, the ...
The Progress in Wireless Data Transport and its Role in the Evolving Internet
(Massachusetts Institute of Technology. Engineering Systems Division, 2008-11)
The progress of wireless technology through the past 105 years is quantitatively reviewed in this paper. Spectral efficiency and coverage density are both found to increase in a relatively continuous exponential fashion ...
Corporate-University Alliances and Engineering Systems Research
(Massachusetts Institute of Technology. Engineering Systems Division, 2002-05)
This symposium is focused on the possibilities for deeper, more fundamental understanding of engineering systems. Many of the papers address characteristics of engineering systems. As noted by others, engineering systems ...
Detecting Evolving Patterns of Self-Organizing Networks by Flow Hierarchy Measurement
(Massachusetts Institute of Technology. Engineering Systems Division, 2010-06)
Hierarchies occur widely in evolving self-organizing ecological, biological, technological and social networks, but detecting and comparing hierarchies is difficult. Here we present a metric and technique to quantitatively ...
An Algorithm and Metric for Network Decomposition from Similarity Matrices: Application to Positional Analyses
(Massachusetts Institute of Technology. Engineering Systems Division, 2007-02)
We present an algorithm for decomposing a social network into an optimal number of structurally equivalent classes. The k-means method is used to determine the best decomposition of the social network for various numbers ...