On Partial Observability of Large Scale Linear Systems: A Structured Systems Approach

2018 ◽  
Author(s):  
Xiaofei Liu ◽  
Bruno Sinopoli
Keyword(s):  
Linear Systems ◽  
Large Scale ◽  
Systems Approach ◽  
Partial Observability ◽  
Structured Systems

Minimum Robust Sensor Placement for Large Scale Linear Time-Invariant Systems: A Structured Systems Approach*

2013 ◽  
Vol 46 (27) ◽  
pp. 417-424 ◽  
Author(s):  
Xiaofei Liu ◽  
Yilin Mo ◽  
Sergio Pequito ◽  
Bruno Sinopoli ◽  
Soummya Kar ◽  
...  
Keyword(s):  
Large Scale ◽  
Systems Approach ◽  
Linear Time ◽  
Sensor Placement ◽  
Linear Time Invariant ◽  
Structured Systems ◽  
Linear Time Invariant Systems ◽  
Time Invariant

scholarly journals Citizens without Borders – new media and global accountability measures

2010 ◽  
Vol 1 (1) ◽  
pp. 37 ◽  
Author(s):  
Karin Geiselhart
Keyword(s):  
New Media ◽  
Large Scale ◽  
Systems Approach ◽  
Public Information ◽  
Communication Technologies ◽  
Information Communication Technologies ◽  
Information Communication ◽  
Online Technologies ◽  
Accountability Measures ◽  
Global Indicators

In an environment of globalisation and rapidly expanding deployment of interactive digital communication, this paper takes a complex systems approach to the mapping of large scale global indicators onto electronic flows of information and intent. It argues that democracy is being transformed by online technologies, and that governments which embrace and encourage citizen inputs and monitoring of public information can establish vital groundwork for more effective forms of global governance. Growing awareness of issues that transcend jurisdictions makes such transformations both necessary and increasingly acceptable. The prism for this bird’s eye view is the Australian Government’s evolution in its uses of information communication technologies (ICTs) for citizen engagement.

Linear systems approach to describing and classifying Fano resonances

2013 ◽  
Vol 87 (12) ◽  
Author(s):  
I. Avrutsky ◽  
R. Gibson ◽  
J. Sears ◽  
G. Khitrova ◽  
H. M. Gibbs ◽  
...  
Keyword(s):  
Linear Systems ◽  
Systems Approach ◽  
Fano Resonances

scholarly journals A fast methodology for large-scale focusing inversion of gravity and magnetic data using the structured model matrix and the 2-D fast Fourier transform

2020 ◽  
Vol 223 (2) ◽  
pp. 1378-1397
Author(s):  
Rosemary A Renaut ◽  
Jarom D Hogue ◽  
Saeed Vatankhah ◽  
Shuang Liu
Keyword(s):  
Fourier Transform ◽  
Fast Fourier Transform ◽  
Linear Systems ◽  
Large Scale ◽  
Surface Measurement ◽  
Magnetic Data ◽  
Uniform Grid ◽  
Data Sets ◽  
Inversion Algorithm ◽  
Data Set

SUMMARY We discuss the focusing inversion of potential field data for the recovery of sparse subsurface structures from surface measurement data on a uniform grid. For the uniform grid, the model sensitivity matrices have a block Toeplitz Toeplitz block structure for each block of columns related to a fixed depth layer of the subsurface. Then, all forward operations with the sensitivity matrix, or its transpose, are performed using the 2-D fast Fourier transform. Simulations are provided to show that the implementation of the focusing inversion algorithm using the fast Fourier transform is efficient, and that the algorithm can be realized on standard desktop computers with sufficient memory for storage of volumes up to size n ≈ 106. The linear systems of equations arising in the focusing inversion algorithm are solved using either Golub–Kahan bidiagonalization or randomized singular value decomposition algorithms. These two algorithms are contrasted for their efficiency when used to solve large-scale problems with respect to the sizes of the projected subspaces adopted for the solutions of the linear systems. The results confirm earlier studies that the randomized algorithms are to be preferred for the inversion of gravity data, and for data sets of size m it is sufficient to use projected spaces of size approximately m/8. For the inversion of magnetic data sets, we show that it is more efficient to use the Golub–Kahan bidiagonalization, and that it is again sufficient to use projected spaces of size approximately m/8. Simulations support the presented conclusions and are verified for the inversion of a magnetic data set obtained over the Wuskwatim Lake region in Manitoba, Canada.

Future Trends in Management of Hazardous Envhionments - Panel Summary

2000 ◽  
Vol 44 (12) ◽  
pp. 2-602-2-605
Author(s):  
Thomas J. Smith
Keyword(s):  
Large Scale ◽  
New Technologies ◽  
Systems Approach ◽  
Environmental Safety ◽  
Future Trends ◽  
Psychological Consequences ◽  
Hazard Management ◽  
Musculoskeletal Problems ◽  
To Come ◽  
Panel Summary

Coming decades almost certainly will see a continuing process of change in the nature and distribution of workplace and environmental safety hazards and risks. This session discusses future trends in the management of hazardous environments, particularly in terms of how such management can benefit from the application of macroergonomic principles and methods, Thomas Albin points out that although the application of ergonomics will remain a key strategy for abating musculoskeletal problems in the workplace, there is need for a broader systems approach to ergonomics program design. Michael Smith deals with new types and patterns of hazards and risks related to the emergence of new technologies. Markku Mattila addresses future trends in management of workplace hazards from a Scandinavian and European perspective, including the integration of ergonomics and quality management. Victor Koscheyev and Gloria Leon discuss future needs and trends in systems management of large-scale disasters and in the psychological consequences of human exposure to such disasters. Thomas Smith notes that a number of prevailing concepts and practices in the safety profession remain contrary to the principle of ‘fitting the job to the worker,’ and that perhaps the greatest challenge facing the safety and hazard management field in the decades to come will be to broaden the acceptance and application of this principle to enhance safety performance in the workplace.

Conditions Determining the Success of Public E-Procurement

2012 ◽  
pp. 185-209 ◽  
Author(s):  
Nirmala Dorasamy
Keyword(s):  
Public Management ◽  
Customer Value ◽  
Large Scale ◽  
Systems Approach ◽  
Focal Point ◽  
Successful Implementation ◽  
The Public ◽  
Goods And Services ◽  
Efficiency And Effectiveness ◽  
Procurement System

The dynamic global environment has necessitated governments to adopt a systems approach of integrating suppliers, customers, and information linkages in an endeavor to create and sustain value for public services. The evolution of the concept “the customer is king” has placed the customer foremost in public management thinking. As a result, optimizing customer value in the public domain has become a focal point in managing procurement. The large quantity of public resources used for service delivery points to the importance of efficiency and effectiveness in expenditures as well as accountability. E-Procurement systems provide mechanisms for controlling, simplifying, and automating goods and services from different suppliers. While benefits like stricter control over spending authorization, easier transaction processing and elimination of redundant stock are achieved through automated procurement processes; the viability and success of e-procurement for the public sector is determined by various conditions. The conditions for successful implementation of an e-procurement system are explored as every government activity involves the spending of public monies on goods and services. Any failings in e-procurement practices can create possibilities for large-scale losses through incompetence, waste, and fraud, which directly impact the public.

Analyzing the IS 2010 Model Curriculum for Evidence of the Systems Approach

2016 ◽  
Vol 9 (1) ◽  
pp. 54-66
Author(s):  
George Schell ◽  
Richard Mathieu
Keyword(s):  
Decision Making ◽  
Information Systems ◽  
Systems Engineering ◽  
Large Scale ◽  
Systems Approach ◽  
Business Schools ◽  
Learning Objectives ◽  
Degree Programs ◽  
Course Content ◽  
Curriculum Guidelines

The systems approach is frequently associated with solving large-scale, complex problems and is regarded as a foundation for systems engineering and decision-making. Components of the systems approach are too frequently missing from information systems programs in business schools. The purpose of this paper is to determine the degree to which the IS 2010: Curriculum Guidelines for Undergraduate Degree Programs contains the systems approach in its learning objectives as well as specific course content. By examining the curriculum guidelines a preliminary judgment can be made concerning evidence of the systems approach having a broad implementation across information systems programs. The paper concludes with a discussion of the importance of the systems approach in the IS curriculum and establishing the systems approach as a theme in the curriculum of IS programs.

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