J. O’Reilly

Duke University

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J. Tompkins

Fermi National Accelerator Laboratory

A. Liberman

Yahoo (United States)

F. C. Porter

Istituto Nazionale di Fisica Nucleare, Sezione di Pisa

F. Bulos

Stanford Synchrotron Radiation Lightsource

R. Hofstadter

Stanford University

J. Gaiser

Stanford Synchrotron Radiation Lightsource

H. F-W. Sadrozinski

University of California, Santa Cruz

D. Aschman

University of Cape Town

M. J. Oreglia

University of Chicago

K. Strauch

Institut National des Sciences Appliquées de Rennes

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Stanford University

California Institute of Technology

SLAC National Accelerator Laboratory

Stanford Synchrotron Radiation Lightsource

Duke University

Centre National de la Recherche Scientifique

Ollscoil na Gaillimhe – University of Galway

Oak Ridge National Laboratory

European Organization for Nuclear Research

Fermi National Accelerator Laboratory

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Multistage parametric eigenstructure assignment by output-feedback control

International Journal of Control (1988)

M. M. Fahmy J. O’Reilly

Abstract This paper develops an efficient multistage parametric approach for eigenstructure assignment in linear multivariable systems by output-feedback control. The sets of closed-loop eigenvalues and associated eigenvectors are suitably divided into subsets and the entire eigenstructure is constructed by parts in two (or more) consecutive stages. This allows the subsets of right and left eigenvectors to be assigned in separate stages and thus the computational algorithm is relaxed from the orthogonality conditions. The number of effective free parameters beyond eigenvalue assignment is determined, and the notion of redistributing these parameters among the assignable right and left eigenvectors is introduced. Numerical examples are included to demonstrate the design procedure. Notes ‡On leave from the Department of Electrical Engineering Tanta University Tanta Egypt.

Orthogonality

Feedback Control

10.1080/00207178808906163

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Citations (35)

Future stability challenges for the UK network with high wind penetration levels

IET Generation Transmission & Distribution (2015)

Jun Xia Adam Dyśko J. O’Reilly

Offshore wind plant will play an increasingly important role in future decades if ever‐stringent requirements of energy security and low carbon emissions are to be met. Although some analyses of the DFIG impact on system stability have previously been reported, none are based on a large network representing a real system, or the large network is simply not publicly available. This paper describes one such suitable equivalent dynamic model for stability studies based on the UK transmission system. The methodology for appropriate control system design and adjustment of the parameters under different dispatch conditions is presented. Two important aspects contributing to future system stability are studied in detail, namely maximum value of the rate of change of frequency and transient stability. Following National Grid future energy scenarios, a number of detailed case studies are presented to quantify the impact of key influencing factors including the size of the largest generating unit for n −1 contingency, amount of primary system response, and frequency dependency of load. The study concludes that none of the individual factors can provide a complete solution and that careful cost benefit analysis is needed to determine the proper mix of services and reinforcements needed in the future.

Penetration (warfare)

10.1049/iet-gtd.2014.0835

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Citations (26)

Authors' reply

IEEE Transactions on Automatic Control (1984)

J. O’Reilly M. F. Fahmy

10.1109/tac.1984.1103642

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Citations (0)

Voice Application Development with VoiceXML

Rick Beasley J. O’Reilly Kenneth Michael Farley Leon Henry Squire

From the Publisher: Voice Application Development with Voice XML works from an application-centric approach, detailing how a programmer proficient in standard web application development tools and techniques can build voice-based applications and interfaces. The book presents both the structure and vocabulary of VoiceXML-the primary enabling technology for voice application development-as well as the best practices developed by the authors over years of voice interface design experience at Lucent.

Interface (matter)

Programmer

Source

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Citations (15)

Multi-Stage Parametric Eigenstructure Assignment by Output-Feedback Control

American Control Conference (1988)

M. M. Fahmy J. O’Reilly

This paper develops an efficient multi-stage parametric approach for eigenstructure assignment in linear multivariable systems by output-feedback control. The sets of closed-loop eigenvalues and associated eigenvectors are suitably divided into subsets and the entire eigenstructure is constructed by parts in two (or more) consecutive stages. This allows the subsets of right and left eigenvectors to be assigned in separate stages and thus the computational algorithm is relaxed from the orthogonality conditions. The number of effective free parameters beyond eigenvalue assignment is determined, and the notion of redistributing these parameters among the assignable right and left eigenvectors is introduced. A numerical example is included to demonstrate the design procedure.

Orthogonality

10.23919/acc.1988.4789914

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Citations (2)

Psychoanalytical psychotherapy is distinct from psychoanalysis

BMJ (2012)

J. O’Reilly Luigi Caparrotta

We support Lemma and Fonagy’s view that psychoanalysis has a valuable place in modern mental health services1 and would like to add some further points. Psychoanalysis is an intensive form of treatment and available mainly in the private and voluntary sectors. Psychoanalytical psychotherapy, usually once weekly, either individual or in a group, is an important NHS treatment. It is misleading to …

Lemma (botany)

Psychoanalytic Therapy

10.1136/bmj.e1795

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A Study and Comparison of the Inclusive Reactions pi+ n --> rho0 x and K- p --> anti-K*0 x

R. L. Eisner W. Fickinger J. A. Malko Debora Matthews J. O’Reilly

10.17182/hepdata.35597.v1

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Accessing new physics with an undoped, cryogenic CsI CEvNS detector for COHERENT at the SNS

arXiv (Cornell University) (2023)

P. S. Barbeau V. Belov I. Bernardi C. Bock A. Bolozdynya

We consider the potential for a 10-kg undoped cryogenic CsI detector operating at the Spallation Neutron Source to measure coherent elastic neutrino-nucleus scattering and its sensitivity to discover new physics beyond the standard model. Through a combination of increased event rate, lower threshold, and good timing resolution, such a detector would significantly improve on past measurements. We considered tests of several beyond-the-standard-model scenarios such as neutrino non-standard interactions and accelerator-produced dark matter. This detector's performance was also studied for relevant questions in nuclear physics and neutrino astronomy, namely the weak charge distribution of CsI nuclei and detection of neutrinos from a core-collapse supernova.

Spallation Neutron Source

10.48550/arxiv.2311.13032

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Citations (1)

Chain Reaction

Advances in educational technologies and instructional design book series (2019)

J. O’Reilly Liam Guilfoyle Louise Lehane

This chapter presents a case study of the experience of the Irish Chain Reaction (CR) team, which took place during a time of significant curriculum change in the lower secondary school system. As such, it is hoped that those interested in teacher professional development will find the case of interest while acknowledging the varied cultural, material and structural resources, and limitations that influence the context of any educational change process. The authors have placed a significant focus on describing the Irish context to begin this chapter, initially comparing the old science syllabus with the new “specification,” with thought given to the existing modalities of student learning and the nature of teacher professional collaboration and the developments that will be required by the new curriculum. The authors then summarize the plan for CR implementation through a professional learning community (PLC) focused on supporting teacher agency and autonomy in the design of inquiry-based science education (IBSE) classes. Teacher and student reflections of experience are presented.

Syllabus

Modalities

10.4018/978-1-5225-5439-4.ch004

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The deadbeat control of linear multivariable systems with inaccessible state

International Journal of Control (1980)

J. O’Reilly

The problem of deadbeat controller design for a class of discrete-time linear multi-variable systems with inaccessible state is considered. A deadbeat controller, based upon a minimal-order observer, and specified by two gain matrices in compact form, is presented which can drive the system state from any arbitrary initial state to the origin in at most νc + ν0 — 1 steps where νc and ν0 respectively are the controllability and observability indices of the system. The simplicity and generality of the design is demonstrated by numerical example.

Observability

Observer (physics)

Generality

Simplicity

State variable

10.1080/00207178008961072

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Citations (16)