Results 31 to 40 of about 124,607 (59)

Management Matters [PDF]

open access: yes
New indications of managerial innovations are created and then used to show that changes in organizational technologies are an important source of economic growth.
Michelle Alexopoulos, Trevor Tombe
core  

Volumes of Evidence - Examining Technical Change Last Century Through a New Lens [PDF]

open access: yes
Although technical change is central in much of modern economics, traditional measures of it are, for a number of reasons, flawed. We discuss in this paper new indicators based on data drawn from the MARC records of the Library of Congress on the number ...
Jon Cohen, Michelle Alexopoulos
core  

Cascade-Driven Series with Narrower Multifractal Spectra Than Their Surrogates: Standard Deviation of Multipliers Changes Interactions across Scales

open access: yesComplexity, 2017
Multifractal (or singularity) spectra widths w allow diagnosing cascade structure through comparing original series’ widths wOrig to surrogate series’ widths wSurr.
Jun Taek Lee, Damian G. Kelty-Stephen
doaj   +1 more source

A New Mathematical Modeling Method for Four-Stage Helicopter Main Gearbox and Dynamic Response Optimization

open access: yesComplexity, 2019
A new mathematical modeling method, namely, the finite element method and the lumped mass method (LMM-FEM) mixed modeling, is applied to establish the overall multinode dynamic model of a four-stage helicopter main gearbox.
Yuan Chen   +5 more
doaj   +1 more source

Multimodal Semantics Extraction from User-Generated Videos

open access: yesAdvances in Multimedia, 2012
User-generated video content has grown tremendously fast to the point of outpacing professional content creation. In this work we develop methods that analyze contextual information of multiple user-generated videos in order to obtain semantic ...
Francesco Cricri   +5 more
doaj   +1 more source

Continuous Top-k Contour Regions Querying in Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2013
Wireless sensor networks (WSNs) are important parts of Internet of Things or Cyber-Physical Systems (CPS). WSNs can be seen as a new type of distributed database systems. The data query processing is very important for WSNs.
Shangfeng Mo   +4 more
doaj   +1 more source

Read All About it!! What happens following a technology shock? [PDF]

open access: yes
Existing indicators of technical change are plagued by shortcomings. I present here new measures based on books published in the field of technology that resolve many of these problems and use them to identify the impact of technology shocks on economic ...
Michelle Alexopoulos
core  

Event-Triggered Adaptive Backstepping Control for Strict-Feedback Nonlinear Systems with Zero Dynamics

open access: yesComplexity, 2019
This paper focuses on the problem of event-triggered control for a class of uncertain nonlinear strict-feedback systems with zero dynamics via backstepping technique.
Bo Xu   +3 more
doaj   +1 more source

Distributed Transmission Probability Control in Fading Channel with State Information

open access: yesInternational Journal of Distributed Sensor Networks, 2015
A wireless system consisting of a finite number of heterogeneous users transmitting packets over a slotted ALOHA Rayleigh-fading channel is investigated in this paper.
S. Xie, K.S. Low, E. Gunawan
doaj   +1 more source

Automated parking and payment system using license plate and vehicle attribute recognition with multimodal ai models [PDF]

open access: yes
As of October 2023, Malaysia recorded over 36.3 million registered vehicles, highlighting the need for more efficient and intelligent parking solutions. Traditional parking systems, which rely on physical tickets, RFID tags, and e-wallets, often lead to ...
Yong, Ting Wei
core  

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